Material supply mechanism, material tray assembly, 3D printer and 3D printing method

Abstract

The present application provides a material supply mechanism, a material tray assembly, a 3D printer, and a 3D printing method. The material supply mechanism is configured to replenish the printing material in the material tray of the 3D printer, and includes a material storage body having a material storage chamber for storing the printing material therein, a transport assembly including a transport member provided in the material storage chamber, a transmission assembly that is transmission-connected to the transport member and is used to drive the transport member to move in the material storage chamber when driven, and an output assembly that is connected to the material storage body and is used to deliver the printing material into the material tray. The present application solves the problem that it is difficult to replenish the printing material in the prior art 3D printer.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a Chinese patent application, application number 202210065928.2, titled "Material supply mechanism, 3D printer and material processing method", filed with the China Patent Office on January 20, 2022, and application number 202210065932.9, titled "Method of manufacturing three-dimensional article and consumable assembly ... A Chinese patent application for "3D printer" was submitted to the China Patent Office on January 20, 2022, with application number 202210066731.0, and a Chinese patent application for "photocuring printer" was submitted to the China Patent Office on January 20, 2022, with application number 202210065929.7, and a Chinese patent application for "photocuring printer" was submitted to the China Patent Office on January 20, 2022, with application number 202220160879.6, and a Chinese patent application for "molding stage, molding stage connection mechanism and 3D This application claims priority to the following Chinese patent application, application number 202220160214.5, titled "3D printing material tray and 3D printer", filed with the China Patent Office on January 20, 2022, Chinese patent application number 202211286645.7, titled "Molding stage for photo-curing 3D printing device and manufacturing method thereof", filed with the China Patent Office on January 20, 2022, Chinese patent application number 202211286724.8, titled "Molding stage for 3D printing device and manufacturing method thereof", and Chinese patent application, application number 202223134944.7, titled "Liquid level detection device and 3D printer", filed with the China Patent Office on January 20, 2022, all of the contents of which are incorporated herein by reference. [Technical field]

[0002] The present application relates to the field of 3D printing technology, and in particular to a material supply mechanism, a material tray assembly, a 3D printer, and a 3D printing method. [Background technology]

[0003] A conventional light-curing 3D printer includes a molding stage, a material tray, and a light source. The light source projects light onto the material tray, which has a bottom through which light is transmitted, causing a polymerization reaction in the light-curable material between the molding stage and the bottom of the material tray, resulting in a cured sheet material. The cured sheet material is bonded to the molding stage, the molding stage is separated from the bottom of the material tray, and the light source is discontinuously or continuously projected onto the bottom of the material tray, and the layered cured sheet material is cured layer by layer, so that the laminated cured sheet material finally forms a three-dimensional solid print.

[0004] The liquid addition method of the conventional 3D printing is mostly manual, which wastes manpower and cannot accurately control the amount of liquid added. In addition, the conventional method also uses a peristaltic pump to perform the liquid addition operation, but the mechanical structure corresponding to this liquid addition method is complicated, which makes the device larger in volume, increases the device cost and later maintenance cost, and makes material replacement difficult.

[0005] As can be seen from the above, there is a problem in the prior art in that it is difficult for 3D printers to replenish printing materials. Summary of the Invention [Problem to be solved by the invention]

[0006] The main objective of the present application is to provide a material supply mechanism, a material tray assembly, a 3D printer and a 3D printing method to solve the problem that 3D printers in the prior art are difficult to replenish with printing materials. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the present invention provides a material supply mechanism configured to replenish printing material in a material tray of a 3D printer, the material supply mechanism including a material storage body having a material storage chamber for storing printing material therein, a transport assembly including a transport member provided in the material storage chamber, a transmission assembly that is transmission-connected to the transport member and is used to drive the transport member to move within the material storage chamber when driven, and an output assembly that is connected to the material storage body and is used to deliver the printing material into the material tray, wherein the material tray (11) is provided with a liquid level detection mechanism, the liquid level detection mechanism is used to detect the amount of the printing material in the material tray (11), and the material supply mechanism is used to introduce or stop introducing the printing material into the material tray (11) based on the detection result of the liquid level detection mechanism.

[0008] The present application further provides a material supply mechanism configured to replenish printing material in a material tray of a 3D printer, the material supply mechanism including a material storage chamber for storing the printing material, a transport assembly including a transport member disposed in the material storage chamber and rotating when driven to agitate the printing material, and an output assembly for selectively delivering the printing material from the material storage chamber to the material tray or blocking the delivery of the printing material.

[0009] The present application further provides a material supply mechanism configured to replenish printing material in a material tray of a 3D printer, the material supply mechanism including a material storage chamber for storing the printing material, a conveying assembly provided in the material storage chamber and rotating when driven to stir the printing material, and an output assembly having a material discharge passage communicating with the material tray and the material storage chamber, respectively, and an opening / closing member located in the material discharge passage and configured to open the material discharge passage to guide the printing material to the material tray when the pressure received from the printing material in the material storage chamber is equal to or greater than a predetermined pressure, and to close the material discharge passage when the pressure received from the printing material is less than the predetermined pressure.

[0010] The present application further provides a material tray assembly including a material tray and the above-mentioned material supply mechanism removably or non-removably connected to the material tray.

[0011] The present application further provides a 3D printer including a material tray for storing printing material, and a material supply mechanism connected to the material tray and configured to replenish the printing material within the material tray, the material supply mechanism being the material supply mechanism described above, or a 3D printer including the material tray assembly described above.

[0012] The present application further provides a 3D printing method applicable to the above-mentioned 3D printer including the above-mentioned material supply mechanism, or the above-mentioned material tray assembly, or a drive device connected to the material supply mechanism, the 3D printing method including a step of receiving a supply command and controlling forward rotation of the drive device based on the supply command to cause the material supply mechanism to output printing material to the material tray, and / or a step of receiving a stirring command and controlling reverse rotation of the drive device based on the stirring command to stir the printing material in the material supply mechanism.

[0013] The present application further provides a 3D printing method applicable to a 3D printer including the above-mentioned material supply mechanism and further including a liquid level detection mechanism, the 3D printing method including the steps of: receiving a signal transmitted from the liquid level detection mechanism indicating that the liquid level of the printing material in the material tray is lower than a predetermined liquid level; controlling the rotation of the transport member and controlling the output assembly to deliver the printing material from the material storage chamber to the material tray; receiving a signal transmitted from the liquid level detection mechanism indicating that the liquid level of the printing material in the material tray is equal to or higher than a predetermined liquid level; and controlling the output assembly to stop the delivery of the printing material from the material storage chamber to the material tray.

[0014] The present application further provides a 3D printing method applicable to a 3D printer including the above-mentioned material supply mechanism, comprising the steps of receiving a supply command and controlling the rotation of a conveying member based on the supply command to make the pressure applied by the printing material to the opening / closing member equal to or greater than a predetermined pressure, thereby causing the opening / closing member to open the material storage passage, thereby discharging the printing material to a material tray, and / or receiving a stirring command and controlling the rotation of the conveying member based on the supply command to make the pressure applied by the printing material to the opening / closing member less than the predetermined pressure, thereby causing the opening / closing member to close the material storage passage, thereby stirring the printing material. Effect of the Invention

[0015] The material supply mechanism provided in the present application can use a material reservoir to store some printing material in advance, and when the material supply mechanism is assembled into a 3D printer, the transmission assembly drives the rotation of the spiral conveying member, so that the spiral conveying member conveys the printing material in the material reservoir to the material tray via the output assembly, thereby achieving the purpose of replenishing the printing material, and improving the technical problem of the prior art that it is difficult to replenishing the printing material.

[0016] In addition, when an opening / closing member is provided on the material discharge member, in the process in which the spiral transport member transports the printing material, the spiral transport member presses the printing material toward the opening / closing member, so that the printing material applies pressure to the opening / closing member, and when the pressure the opening / closing member receives from the printing material becomes equal to or greater than a predetermined pressure, the opening / closing member can be opened, thereby transporting the printing material. Accordingly, when the pressure the opening / closing member receives from the printing material becomes less than the predetermined pressure, the opening / closing member closes, and when the opening / closing member is closed, the printing material cannot be transported even if the spiral transport member rotates, and at this time, the printing material can be agitated, thereby preventing the precipitation of the printing material. Therefore, the material supply mechanism provided in the present application not only replenishes the printing material in the material tray in a timely manner and improves the convenience of replenishing the printing material, thereby improving the technical problem of the difficulty of replenishing the printing material in the prior art, but also prevents the precipitation of the printing material in the material storage chamber. [Brief description of the drawings]

[0017] The drawings in the specification that form a part of this application are provided for a further understanding of the application, and the illustrative examples and the description thereof are used to interpret the application and are not intended to unduly limit the application. [Figure 1] FIG. 1 is a schematic diagram of a 3D printer provided in an embodiment of the present application. [Diagram 2] FIG. 1 is a schematic diagram of a partial structure of a 3D printer provided in one embodiment of the present application. [Diagram 3] FIG. 2 is a schematic diagram of a structure of a material supply mechanism provided in one embodiment of the present application. [Figure 4] FIG. 2 is a schematic diagram of a structure of a material supply mechanism provided in one embodiment of the present application. [Diagram 5] FIG. 2 is a schematic diagram of an exploded structure of a material supply mechanism provided in one embodiment of the present application. [Figure 6] 1 is a schematic diagram of an exploded structure of a locking member provided in one embodiment of the present application. [Figure 7]FIG. 2 is a partial view of a first state of a material supply mechanism provided in one embodiment of the present application. [Figure 8] FIG. 2 is a partial view of a first state of a lock assembly provided in one embodiment of the present application. [Figure 9] FIG. 2 is a partial view of a second state of a lock assembly provided in an embodiment of the present application. [Figure 10] 4A-4C are schematic diagrams of different positions of a first obstruction in a first passage and a second passage provided in one embodiment of the present application; [Figure 11] FIG. 2 is a partial view of a second state of a material supply mechanism provided in an embodiment of the present application. [Figure 12] FIG. 2 is a partial view of a third state of a material supply mechanism provided in an embodiment of the present application. [Figure 13] FIG. 8 is an enlarged structural view of a portion B in FIG. [Figure 14] FIG. 2 is a schematic diagram of a structure of a lock body provided in one embodiment of the present application. [Figure 15] FIG. 2 is a schematic diagram of another partial structure of a 3D printer provided in one embodiment of the present application. [Figure 16] FIG. 2 is a schematic diagram of another partial structure of a 3D printer provided in one embodiment of the present application. [Figure 17] FIG. 15 is an enlarged structural view of a portion A in FIG. [Figure 18] FIG. 2 is a schematic diagram of a partial structure of a 3D printer provided in another embodiment of the present application. [Figure 19] 13 is a schematic diagram of a fitting structure between a material supply mechanism and a material tray provided in another embodiment of the present application. FIG. [Figure 20] FIG. 1 is a schematic diagram of the structure of a 3D printer provided in an embodiment of the present application. [Figure 21] 1 is a cross-sectional view showing a release film placed on a material tray provided in an embodiment of the present application being pulled by a film pulling member provided on the mounting seat. [Figure 22] 1 is a schematic diagram of a material tray provided in an embodiment of the present application moving along a first direction to a fixed position, and a mounting seat moving along a second direction to a predetermined position. [Figure 23] FIG. 1 is a schematic diagram of a partial structure of a 3D printer provided in one embodiment of the present application. [Figure 24] FIG. 2 is a schematic diagram of a partial structure of a 3D printer provided in another embodiment of the present application. [Diagram 25] FIG. 2 is a schematic diagram of a partial structure of a 3D printer when a material tray provided in one embodiment of the present application is located in a fixed position. [Figure 26] FIG. 1 is a schematic diagram of a partial structure of a 3D printer provided in one embodiment of the present application. [Figure 27] FIG. 2 is a schematic diagram of a partial structure of a 3D printer provided in one embodiment of the present application. [Figure 28] FIG. 28 is an enlarged view of a portion C in FIG. [Figure 29] 1 is a schematic diagram showing a pin provided in one embodiment of the present application not blocked in a locking groove. [Diagram 30] 1 is a schematic diagram of the movement of the index pin provided in one embodiment of the present application after the concave surface abuts against the first protrusion when the index pin enters the locking groove. FIG. [Diagram 31] 1 is a schematic diagram of a guide pin and a locking groove provided in one embodiment of the present application that fit together to lock the material tray in a fixed position. FIG. [Diagram 32] 13 is a schematic diagram of a guide pin and a locking groove provided in one embodiment of the present application engaging to unlock the material tray from a fixed position. FIG. [Diagram 33] 1 is a schematic diagram of a structure of a 3D printer provided in one embodiment of the present application. [Diagram 34] FIG. 2 is a schematic diagram of the structure of a first type of stage connection mechanism provided in one embodiment of the present application. [Diagram 35] FIG. 2 is a schematic diagram of the structure of a two-stage connection mechanism provided in one embodiment of the present application. [Diagram 36] FIG. 2 is a cross-sectional view of a stage connection mechanism provided in one embodiment of the present application. [Figure 37] FIG. 2 is a schematic diagram of a structure of a forming stage provided in one embodiment of the present application at a first viewing angle. [Figure 38]FIG. 2 is a schematic diagram of a structure of a forming stage provided in one embodiment of the present application at a second viewing angle. [Figure 39] 1 is a schematic diagram of a structure of a first type of stopper member provided in one embodiment of the present application. [Diagram 40] 1 is a schematic diagram of the structure of a second type of stopper member provided in one embodiment of the present application. [Diagram 41] 1A to 1C are schematic diagrams showing the structures of three types of stopper members provided in one embodiment of the present application. [Diagram 42] FIG. 1 is a schematic diagram of a 3D printer provided in accordance with one embodiment of the present disclosure without a material tray and molding stage attached. [Diagram 43] FIG. 1 is a schematic diagram of a 3D printer equipped with a material tray and molding stage provided in one embodiment of the present application. [Diagram 44] 1 is a schematic diagram of a structure of a material tray provided in one embodiment of the present application. [Diagram 45] 1 is a flowchart of a 3D printing method provided in one embodiment of the present application. [Figure 46] FIG. 2 is a schematic diagram of the connection between the driving device and the control module provided in the embodiment of the present application. [Figure 47] 1 is a flowchart of a 3D printing method provided in another embodiment of the present application. [Figure 48] FIG. 1 is a step diagram of a 3D printing method provided in an embodiment of the present application. [Figure 49] FIG. 1 is a schematic diagram of a scene when performing step S01 in a 3D printing method provided in one embodiment of the present application. [Figure 50] FIG. 2 is a schematic diagram of a connection structure between a forming stage and a three-dimensional article when a support structure is provided in one embodiment of the present application. [Figure 51] FIG. 1 is a sub-step diagram of step S02 in the 3D printing method provided in an embodiment of the present application. [Figure 52] FIG. 1 is a schematic diagram of a scene when performing step S21 in a 3D printing method provided in one embodiment of the present application. [Diagram 53]FIG. 1 is a schematic diagram of a scene when performing step S22 in a 3D printing method provided in one embodiment of the present application. [Figure 54] FIG. 1 is a schematic diagram of a scene when performing step S03 in a 3D printing method provided in one embodiment of the present application. [Figure 55] FIG. 51 is a schematic diagram of a scene when performing step S03 of the structure in FIG. 50. [Figure 56] 1 is a schematic diagram of the overall structure of a liquid level detection mechanism in a 3D printer provided in one embodiment of the present application. [Figure 57] 1 is a schematic diagram of the overall structure of a liquid level detection mechanism provided in one embodiment of the present application. [Figure 58] 1 is a schematic diagram of the overall structure of a liquid level detection mechanism in the case where there are two sensing elements provided in one embodiment of the present application; [Figure 59] 1 is a partially enlarged view of a detection assembly in a liquid level detection mechanism provided in one embodiment of the present application when there are two sensing elements. [Figure 60] 1 is a schematic diagram of the structure of a detection assembly in a liquid level detection mechanism provided in one embodiment of the present application when multiple sensing elements are provided. [Figure 61] FIG. 2 is a diagram illustrating the principle of how paint provided in one embodiment of the present application is used in the molding stage. [Figure 62] FIG. 2 is a schematic diagram of the structure of a molding stage of a 3D printing apparatus provided in one embodiment of the present application. [Figure 63] FIG. 62 is a schematic diagram showing the structure of the forming surface of the forming stage in FIG. 61. [Figure 64] FIG. 62 is a schematic diagram of the rear structure of the forming stage in FIG. 61. [Figure 65] FIG. 65 is a cross-sectional view taken along line HH of the forming stage in FIG. 64. [Explanation of symbols]

[0018] 10...3D printer, 11...material tray, 12...molding stage, 13...light source, 14...material supply mechanism, 15...frame, 16...mounting seat, 17...lifting mechanism, 18...film tensioning member, 19...control module, 20...driver, 21...centrifugal device, 22...spray device, 23...rotating device, 24...curing lamp, 25...support structure, 26...identifier, 27...release film, 100...transport assembly, 110...material storage body, 111...material storage chamber, 120...transport member, 121...transmission shaft, 122...transport section, 200...transmission assembly, 300...output assembly, 310...material Material discharge member, 311...material discharge passage, 320...opening / closing member, 330...housing, 331...outlet, 340...lock assembly, 341...lock member, 3411...first closing portion, 34111...first locking groove, 34112...first seal member, 3412...second closing portion, 34121...second locking groove, 34122...second seal member, 3413...connection body, 3414...operation portion, 3415...engagement member, 34151...second connection portion, 34152...engagement portion, 342...lock body, 3421...movable chamber, 34211...first passage, 301...movable region, 302...flow guide region, 30 3...restraint portion, 34212...second passage, 304...first stopper portion, 305...second stopper portion, 34213...third passage, 3422...material discharge chamber, 3423...outlet portion, 34231...outlet groove, 3424...engagement member, 34241...first connection portion, 34242...engagement portion, 500...intake valve, 1000...three-dimensional object, 600...stopping member, 610...elastic member, 620...first positioning member, 630...second positioning member, 640...positioning groove, 641...bottom wall, 642...top wall, 643...connection wall, 644...first leveling protrusion, 645...second leveling protrusion, 64 6...first positioning protrusion, 647...second positioning protrusion, 648...entrance portion, 649...lock portion, 650...insertion pin, 651...flat surface, 652...concave surface, 700...guide portion, 710...first slide rail, 720...second slide rail, 730...first slider, 740...second slider, a...first direction, b...second direction, 28...stage connection mechanism, 101...stage body, 102...limiting portion, 103...connection seat, 130...stopper member, 140...connection member, 104...first slide connection portion, 105...second slide connection portion, 112...first positioning portion,123...second positioning portion, 131...stopper block, 113...stopper groove, 132...elastic member, 133...elastic sheet, 134...first magnetic member, 135...second magnetic member, 136...third magnetic member, 29...case, 291...light passage, 293...shielding member, 296...printing bin, 297...window, 298...closing door, 30...environmental adjustment device, 299...electrical bin, 411...disk body, 415...lid body, 417...second fitting member, 422...first fitting member, 423...elastic support member, 124...through hole, 125...molding surface, 126...rear surface, 802...detection assembly, 8021...detection chip, 8022...detection member, 803...processing assembly. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] In addition, the embodiments and features of the embodiments in the present application may be combined with each other if not inconsistent. Hereinafter, the present application will be described in detail with reference to the drawings in conjunction with the embodiments.

[0020] Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0021] In this application, unless otherwise stated, the directional terms "up, down, top, bottom" used generally refer to directions shown in the drawings, or to the vertical, perpendicular or gravitational direction of the members themselves, and similarly, for ease of understanding and explanation, "inside, outside" refers to the inside and outside of the contour of each member itself, but the above directional terms are not intended to limit the present application.

[0022] Obviously, the above-described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments of the present application, all other embodiments that a person skilled in the art can devise without making creative efforts should fall within the scope of protection of the present application.

[0023] 1, the present application provides a 3D printer 10, which can be used to print and mold a three-dimensional model, in other words, the 3D printer 10 can process a printing material and mold the printing material into a specified three-dimensional shape. Note that the printing material can be a powder, liquid, or solid-liquid mixture, such as a photocurable printing material, where a photosensitive resin can be used as the printing material in some embodiments of the present application.

[0024] The 3D printer 10 includes a material tray 11, a molding stage 12, and a light source 13. The molding stage 12 is located on the top side of the material tray 11. The material tray 11 is used to hold printing materials, which are used to manufacture three-dimensional articles, and the light source 13 is located on the bottom side of the material tray 11, and light is transmitted through the bottom of the material tray 11, and the light source 13 is used to project light toward the material tray 11, so that the printing material located between the molding stage 12 and the bottom of the material tray 11 undergoes a polymerization reaction, and a hardened sheet material is obtained, and the hardened sheet material is bonded to the molding stage 12, and then the molding stage 12 is moved away from the bottom of the material tray 11, and the light source 13 is made to project the light source 13 discontinuously or continuously onto the bottom of the material tray 11, so that the hardened sheet material layer by layer is finally formed into a three-dimensional article.

[0025] In the process of continuous printing by the 3D printer 10, the printing material in the material tray 11 is constantly consumed, and when the printing material in the material tray 11 is consumed to a certain amount, it is necessary to replenish the printing material in the material tray 11 so as to ensure the effective progress of 3D printing. However, in the related art, the printing material is generally replenished manually, that is, the operator manually replenishes the printing material in the material tray 11, and this method cannot realize accurate and timely replenishment of the printing material, and cannot accurately control the replenishment amount of the required printing material. In addition, in the related art, the printing material may be replenished in the material tray 11 by a peristaltic pump, but the peristaltic pump has a complicated mechanical structure, which makes the device volume larger, increases the cost of the device and the maintenance cost in the later stages, and the material replacement is also troublesome. In other words, in the related art, there is a technical problem that it is difficult to replenish the printing material in the material tray 11. The material supply mechanism 14 is connected to the material tray 11 and is used to replenish the printing material in the material tray 11.

[0026] In order to solve the above technical problem, and further referring to FIGS. 1 to 4, the present application provides a material supply mechanism 14 and a 3D printer 10 using the material supply mechanism 14.

[0027] The material supply mechanism 14 includes a conveying assembly 100, a transmission assembly 200, and an output assembly 300. The conveying assembly 100 is used for storing and conveying the printing material, and the transmission assembly 200 is connected to the conveying assembly 100, and the transmission assembly 200 is connected to the driving device 20, so that when the driving device 20 operates, it transmits power to the conveying assembly 100 to provide power for the conveying assembly 100 to convey the printing material. The output assembly 300 is connected to the conveying assembly 100, and the output assembly 300 is used for guiding the printing material conveyed by the conveying assembly 100 to the material tray 11. It should be noted that the drive unit 20 connected to the transmission assembly 200 may be a drive structure capable of providing power in the 3D printer 10; in other words, when the material supply mechanism 14 is assembled to the 3D printer 10, the transmission assembly 200 may be transmission-fitted to the drive unit 20 in the 3D printer 10, thereby providing power to the transport assembly 100; and of course, an additional drive unit 20 may be used to provide power to the transport assembly 100 by connecting it to the transmission assembly 200.

[0028] In some embodiments, referring to FIG. 5 and FIG. 19, the conveying assembly 100 includes a material storage body 110 and a conveying member 120. A material storage chamber 111 is provided inside the material storage body 110, and the material storage chamber 111 is used to store the printing material in advance. In the manufacturing process of the material supply mechanism 14, a certain amount of printing material may be stored in the material storage chamber 111 in advance so that the printing material can be replenished in the material tray 11 when the material supply mechanism 14 is assembled into the 3D printer 10. In addition, the conveying member 120 is rotatably provided inside the material storage chamber 111, and when the conveying member 120 rotates relative to the material storage body 110, the printing material can be conveyed to the material tray 11, and the conveying amount of the printing material can be controlled based on the number or progress of rotation, making it easy to convey the printing material quantitatively. The transmission assembly 200 is connected to the conveying member 120 such that the transmission assembly 200 is capable of transmitting power to the conveying member 120 , thereby driving the conveying member 120 to rotate within the material storage chamber 111 .

[0029] In some embodiments, the material storage 110 is connected to the material tray 11 to facilitate communication between the material storage chamber 111 and the storage space inside the material tray 11, thereby facilitating the introduction of printing material into the material tray 11. It should be understood that in other embodiments of the present application, the material supply mechanism 14 may be connected to the material tray 11 via other members, such as a member in the output assembly 300 connected to the material tray 11, or a member in the transmission assembly 200 connected to the material tray 11. In addition, in other embodiments of the present application, the material supply mechanism 14 may be detachably connected to the material tray 11, which makes it easy to remove the material supply mechanism 14 from the material tray 11 and replace it. It should be understood that the part detachably connected to the material tray 11 may be the material storage 110 in the material supply mechanism 14, a member in the output assembly 300, or a member in the transmission assembly 200. Of course, the connection between the material supply mechanism 14 and the material tray 11 may be a non-detachable connection, and is not specifically limited here.

[0030] In addition, the present application further provides a material tray assembly as shown in FIG. 2, which is composed of a material supply mechanism 14 and a material tray 11. Similarly, the material supply mechanism 14 and the material tray 11 are connected detachably or non-detachably. In one application scenario, the material supply mechanism 14 and the material tray 11 are both disposable, and in this case, after the printing material in the material supply mechanism 14 is used up, it can be directly discarded together, and there is no need for later cleaning, maintenance, etc. In another application scenario, one of the material supply mechanism 14 and the material tray 11 is disposable and the other is reusable, and in this case, the connection between the two can be set to a detachable connection, so that after the use of the disposable member is finished, both can be removed and the disposable member can be discarded. Furthermore, in some embodiments, the material tray assembly may further include a liquid level detection mechanism for detecting the liquid level of the printing material in the material tray 11.

[0031] In addition, in order to facilitate the pre-storing of a certain amount of printing material in the material storage chamber 111 during the process of manufacturing the material storage body 110, an addition port (not shown) communicating with the material storage chamber 111 may be opened in the material storage body 110, and printing material may be added into the material storage chamber 111 through the addition port during the manufacturing process. Naturally, after a certain amount of printing material is pre-stored in the material storage chamber 111 through the addition port, a sealing process may be performed on the addition port, thereby achieving the purpose of pre-storing a certain amount of printing material in the material storage chamber 111 and preventing leakage of the printing material.

[0032] In some embodiments, referring to FIG. 19, the conveying member 120 includes a transmission shaft 121 and a conveying portion 122, and the conveying portion 122 is provided on the outer periphery of the transmission shaft 121 along a spiral path. In addition, one end of the transmission shaft 121 extends from the material storage body 110 and is connected to the transmission assembly 200. When the driving device 20 drives the rotation of the transmission assembly 200, the transmission assembly 200 transmits power to the transmission shaft 121, and the transmission shaft 121 drives the rotation of the conveying portion 122, and when the conveying portion 122 rotates, it can convey the printing material along the axial direction of the transmission shaft 121. In addition, the conveying amount of the printing material can be determined or limited based on the number of revolutions or turns that the conveying portion 122 rotates along the spiral path, thereby realizing quantitative conveyance of the printing material.

[0033] In some embodiments, the drive device 20 is configured to be able to rotate in both forward and reverse directions, so that when the drive device 20 rotates forward, the transport member 120 rotates forward, and when the drive device 20 rotates reversely, the transport member 120 rotates reversely. In the embodiments of the present application, when the transport member 120 rotates forward, the printing material is transported into the material tray 11. Naturally, the transport direction of the printing material when the transport member 120 rotates forward is opposite to the transport direction of the printing material when the transport member 120 rotates reversely.

[0034] Based on this, in some embodiments, the transmission assembly 200 and the driving device 20 are transmission-connected to realize a transmission fit therebetween. Specifically, the end of the transmission shaft 121 extending from the material reservoir 110 is transmission-connected to the driving device 20.

[0035] In some embodiments, a gear is molded on the end of the transmission assembly 200 extending from the material storage body 110, and a gear that matches the gear is provided on the output shaft of the driving device 20, so that the gears can be engaged to realize the transmission engagement between the driving device 20 and the transmission shaft 121. In other embodiments, the transmission connection between the transmission assembly 200 and the driving device 20 may be made via a turbine, a gear, a ring gear, a pulley, or the like.

[0036] In one embodiment, referring to Figs. 2-5, 7 and 19, the output assembly 300 includes a housing 330 and a lock assembly 340. The housing 330 is connected to the material storage 110, and the housing 330 has an accommodating space for mounting the lock assembly 340 therein, which is connected to the material storage chamber 111. The lock assembly 340 includes a lock body 342 and a lock member 341. The lock body 342 is provided in the housing 330, and the lock body 342 has a material discharge chamber 3422 and a movable chamber 3421 that are connected to each other. The material discharge chamber 3422 is used to discharge the printing material, and the movable chamber 3421 is connected to the material storage chamber 111. The lock member 341 is movably provided in the movable chamber 3421 to selectively open or close the movable chamber 3421, thereby selectively opening or closing the movable chamber 3421 and the material discharge chamber 3422. Here, when the locking member 341 moves within the movable chamber 3421 to achieve the objective of making the movable chamber 3421 conductive, the objective of discharging the printing material from the material storage chamber 111 by the movable chamber 3421 and the material discharge chamber 3422 can be achieved, and when the locking member 341 moves within the movable chamber 3421 to achieve the closing of the movable chamber 3421, the transport of the printing material can be blocked, thereby preventing leakage of the printing material and preventing the printing material from being erroneously discharged due to erroneous operation of the material supply mechanism 14.

[0037] Optionally, in some embodiments, referring to FIGS. 7 to 10, the movable chamber 3421 includes a first passage 34211 and a second passage 34212 that communicate with each other, and the inner diameter of the first passage 34211 is larger than the inner diameter of the second passage 34212, and one of the first passage 34211 and the second passage 34212 communicates with the material discharge chamber 3422, and the other communicates with the material storage chamber 111. In other words, the printing material in the material storage chamber 111 can be led out from the first passage 34211 and the second passage 34212 to the material discharge chamber 3422, and thereby led out from the material discharge chamber 3422 to the outside of the material supply mechanism 14. Also, referring to FIG. 6, the locking member 341 has a first blocking portion 3411, which is movably assembled within the movable chamber 3421 and is used to close the second passage 34212 when at least a portion of the first blocking portion 3411 enters the second passage 34212, and to connect the first passage 34211 and the second passage 34212 by entering the first passage 34211.

[0038] In addition, when the first blocking portion 3411 is located inside the second passage 34212, the outer peripheral edge of the first blocking portion 3411 is attached to the inner peripheral wall of the second passage 34212, thereby achieving the purpose of sealing the second passage 34212, and thereby closing the movable chamber 3421. At this time, as shown in FIG. 10A, the printing material cannot be transported from the movable chamber 3421 to the material discharge chamber 3422. Based on this, since the inner diameter of the first passage 34211 is larger than the inner diameter of the second passage 34212, the first blocking portion 3411 cannot close the first passage 3421. When the first blocking portion 3411 moves to position 1, a gap is formed between the outer peripheral edge of the first blocking portion 3411 and the inner peripheral wall of the first passage 34211, and when the first blocking portion 3411 completely escapes from the second passage 34212, the first passage 34211 can communicate with the second passage 34212 through the gap formed between the outer peripheral edge of the first blocking portion 3411 and the inner peripheral wall of the first passage 34211, thereby achieving the purpose of connecting the movable chamber 3421, and at this time, the printing material can be transported from the movable chamber 3421 to the material discharge chamber 3422, as shown in FIG. 10 b).

[0039] Optionally, referring to Fig. 6, in order to improve the sealing performance when the first blocking part 3411 closes the second passage 34212, a first locking groove 34111 is opened on the outer periphery of the first blocking part 3411, and the first locking groove 34111 is formed in an annular shape. A first seal member 34112 is provided in the first locking groove 34111, and the first seal member 34112 is formed in an annular shape. The first seal member 34112 is engaged in the first locking groove 34111, and the outer periphery of the first seal member 34112 can protrude out of the first locking groove 34111. As a result, when the first blocking portion 3411 enters the inside of the second passage 34212, the first sealing member 34112 is pressed between the outer peripheral wall of the first engagement groove 34111 and the inner peripheral wall of the second passage 34212, thereby improving the sealing performance between the first blocking portion 3411 and the inner peripheral wall of the second passage 34212 and ensuring the stability of the first blocking portion 3411 closing the second passage 34212.

[0040] Here, with reference to Figures 8, 9 and 10, an example will be described in which the first passage 34211 communicates with the material storage chamber 111, and the second passage 34212 communicates with the material discharge chamber 3422. The first closing part 3411 reciprocates within the movable chamber 3421, and can selectively enter the first passage 34211 or the second passage 34212. When the first closing part 3411 completely enters the inside of the first passage 34211, the first passage 34211 and the second passage 34212 are in conduction, and when at least a part of the first closing part 3411 enters the second passage 34212, the first closing part 3411 closes the second passage 34212.

[0041] Optionally, the first passage 34211 includes a movable region 301 and a flow guide region 302. The movable region 301 is located at an end of the second passage 34212 along the axial direction of the second passage 34212, and the diameter of the movable region 301 is the same as the inner diameter of the second passage 34212, and the flow guide region 302 is provided around the movable region 301. When the first blocking portion 3411 leaves the second passage 34212, it enters the movable region 301, and at this time, the gap formed between the outer periphery of the first blocking portion 3411 and the inner periphery wall of the first passage 34211 is the flow guide region 302. When the first blocking portion 3411 completely enters the movable region 301, the flow guide region 302 can communicate with the second passage 34212 through a part of the movable region 301, thereby achieving the purpose of connecting the movable chamber 3421.

[0042] Here, the fact that the diameter of the movable area 301 mentioned above is the same as the inner diameter of the second passage 34212 indicates that the shape of the internal space of the movable area 301 is the same as the shape of the internal space of the second passage 34212; in other words, the shape formed in the internal space of the second passage 34212 is the same as the shape formed in the internal space of the movable area 301, that is, the vertical projection of the movable area 301 in the cross section of the second passage 34212 and the second passage 34212 or the first passage 34211 overlap, and both fit the first blocking portion 3411.

[0043] The internal space of the flow guide area 302 and the internal space of the movable area 301 are connected to each other, so that the flow guide area 302 and the movable area 301 can be regarded as two spaces formed by dividing the same space. Based on this, a step structure is formed between the inner peripheral wall of the first passage 34211 and the inner peripheral wall of the second passage 34212.

[0044] It should be understood that the installation manner of the movable chamber 3421 may be considered to be formed in other manners. For example, a passage for moving the first closing part 3411 is opened in the lock body 342, and the shape of the passage is adapted to the outer contour of the first closing part 3411, so that when the first closing part 3411 slides in the passage, the outer periphery of the first closing part 3411 is stuck to the inner periphery wall of the passage to close the passage, and a groove is opened at the end of the passage close to the material storage chamber 111 based on the passage, the internal space of the groove communicates with the internal space of the passage, and the groove is arranged in the radial direction of the passage.

[0045] In some embodiments, the flow guiding area 302 is arc-shaped. Note that, in this example, assuming that the space surrounded by the first passage 34211 and the movable area 301 is substantially cylindrical, the flow guiding area 302 may be arc-shaped surrounding the movable area 301, i.e., the second passage 34212 and the vertical projection of the movable area 301 on the cross section of the second passage 34212 or the first passage 34211 overlap, the vertical projection of the flow guiding area 302 on the cross section of the first passage 34211 circumscribes the vertical projection of the movable area 301 on the cross section of the first passage 34211, and the inner circle and the outer circle partially overlap but are not concentric rings. Based on this, the movable region 301 may have a portion of a peripheral wall, so that when the first blocking portion 3411 moves into the movable region 301, the inner peripheral wall of the movable region 301 may provide a positioning effect, a stopper effect and a guide effect for the first blocking portion 3411, ensuring that the first blocking portion 3411 can move back and forth within the first passage 34211 and the second passage 34212. It should be understood that in another embodiment of the present application, the first passage 34211 and the movable region 301 may be surrounded by other shapes, such as, for example, a rectangular column or an elliptical column.

[0046] In another embodiment, when the first blocking portion 3411 enters the inside of the first passage 34211, in order to prevent the first blocking portion 3411 from escaping from the movable region 301 and entering the flow directing region 302, the lock assembly 340 further includes a restraining portion 303, which is provided in the flow directing region 302. The restraining portion 303 may be connected to the inner peripheral wall of the flow directing region 302, or the restraining portion 303 may be connected to a step-like structure formed between the first passage 34211 and the second passage 34212. The restraint portion 303 is used to abut against the outer periphery of the first blocking portion 3411 when the first blocking portion 3411 enters the inside of the first passage 34211, to provide a restricting effect and a guiding effect to the first blocking portion 3411, and can restrain the first blocking portion 3411 within the movable region 301 to prevent the first blocking portion 3411 from falling into the flow guiding region 302, and can also provide a guiding effect to the first blocking portion 3411. Based on the installation of the restraint portion 303, in yet another embodiment, the flow guiding region 302 may be formed in an annular shape, so that the flow guiding region 302 surrounds the outer periphery of the movable region 301, thereby installing a plurality of restraint portions 303 to prevent the first blocking portion 3411 from falling into the flow guiding region 302, and ensure that the first blocking portion 3411 moves stably within the movable region 301.

[0047] 13 , in order to prevent the first blocking portion 3411 from escaping from the movable chamber 3421, the lock body 342 further includes a first stopper portion 304, which is protruded into the second passage 34212 and may be located at an end of the second passage 34212 away from the first passage 34211. The first stopper portion 304 is used to abut against the first stopper portion 3411. In other words, after the first blocking portion 3411 moves from the first passage 34211 and enters the second passage 34212, it can abut against the first stopper portion 304 before the first blocking portion 3411 escapes from the second passage 34212, thereby restricting the first blocking portion 3411 from continuing to move and preventing the first blocking portion 3411 from escaping from the second passage 34212, and also shortening the stroke of movement of the first stopper portion 3411, making it easier for the first blocking portion 3411 to open or close the movable chamber 3421.

[0048] Optionally, the first stopper portion 304 is annular. In this manner, when the first blocking portion 3411 moves to the first stopper portion 304, the first stopper portion 304 can provide a full abutment action to the first blocking portion 3411, preventing the first blocking portion 3411 from being deflected to form a gap between the first blocking portion 3411 and the second passage 34212. In other words, the stability of the fit between the first blocking portion 3411 and the second passage 34212 can be ensured.

[0049] It should be understood that in other embodiments, the first stopper portion 304 may have other shapes, for example, the first stopper portion 304 may be an arc shape, or the first stopper portion 304 may be a plurality of bumps protruding from the circumferential wall of the second passage 34212, the plurality of bumps being spaced apart from each other, and the plurality of bumps being arranged in a ring shape.

[0050] 6, 11 and 12, the movable chamber 3421 further includes a third passage 34213, which is opened on the side of the lock body 342 away from the material storage chamber 111, and one of the first passage 34211 and the second passage 34212 that communicates with the material discharge chamber 3422 communicates with the third passage 34213. When the first passage 34211 communicates with the material storage chamber 111, the third passage 34213 communicates with the second passage 34212, and the third passage 34213 and the first passage 34211 are located at both ends of the second passage 34212 in the axial direction. The locking member 341 further has a second blocking portion 3412, which is located at an end of the locking member 341 remote from the first blocking portion 3411, and which slidably fits into the third passage 34213 and is used to close the third passage 34213. After the second blocking portion 3412 closes the third passage 34213, the printing material cannot flow out from the side of the third passage 34213 remote from the second passage 34212.

[0051] Optionally, referring to FIG. 6 , in order to improve the sealing property when the second closing part 3412 closes the third passage 34213, a second locking groove 34121 is opened on the outer circumferential edge of the second closing part 3412, and a second seal member 34122 is provided in the second locking groove 34121. The second seal member 34122 is annular, the second seal member 34122 is inserted into the second locking groove 34121, and the outer circumferential edge of the second seal member 34122 protrudes out of the second locking groove 34121. When the second blocking portion 3412 is positioned inside the third passage 34213, the second sealing member 34122 is pressed between the outer peripheral wall of the second engagement groove 34121 and the inner peripheral wall of the third passage 34213, thereby improving the sealing performance between the second sealing member 34122 and the peripheral wall of the third passage 34213.

[0052] In the embodiment of the present application, the locking member 341 includes a first closing part 3411, a second closing part 3412 and a connection body 3413, the connection body 3413 is columnar, and the first closing part 3411 and the second closing part 3412 are respectively connected to both ends of the connection body 3413. Here, the radial dimension of the connection body 3413 is smaller than the radial dimension of the second closing part 3412, and a gap is formed between the connection body 3413 and the peripheral wall of the second passage 34212, and when the first passage 34211 and the second passage 34212 are conductive, the printing material can be introduced into the material discharge chamber 3422 through the gap formed between the connection body 3413 and the peripheral wall of the second passage 34212.

[0053] Optionally, in some embodiments, the inner diameter of the third passageway 34213 is smaller than the inner diameter of the second passageway 34212. This may further prevent the first occlusion 3411 from entering the third passageway 34213. It should be appreciated that in other embodiments, the inner diameter of the third passageway 34213 may be equal to or larger than the inner diameter of the second passageway 34212.

[0054] In addition, to facilitate the operation of the locking member 341, the locking member 341 optionally further includes an operating portion 3414. The operating portion 3414 is connected to the connection body 3413, is located on the side of the second closing portion 3412 away from the first closing portion 3411, and is exposed from the side of the locking body 342 away from the material storage body 110. When an acting force is applied to the operating portion 3414, it can drive the movement of the first closing portion 3411, the connection body 3413, and the second closing portion 3412, and the first closing portion 3411 can realize the conductive or closed state of the movable chamber 342. The second closing portion 3412 can close the third passage 34213, so that the leakage of the printing material from the third passage 34213 can be prevented.

[0055] In some embodiments, the movable chamber 3421 extends along a straight line, and the locking member 341 is used to move along the extension direction of the movable chamber 3421 to selectively open or close the movable chamber 3421. In other words, the extension directions of the first passage 34211, the second passage 34212, and the third passage 34213 are located on the same straight line, which makes it easy to drive the movement of the first blocking portion 3411, the second blocking portion 3412, and the connection body 3413 by the operating portion 3414.

[0056] 6, 12, 14 and 17, in order to prevent erroneous discharge of printing material due to erroneous operation, the lock body 342 is provided with an engagement member 3424 in the material discharge chamber 3422, and the lock member 341 is provided with an engagement member 3415 that fits the engagement member 3424, and the engagement member 3415 engages with the engagement member 3424 to restrict the lock member 341 from opening the movable chamber 3421. In addition, the lock member 341 is further used to rotate on its own axis when the movable chamber 3421 is closed, to engage the engagement member 3415 with the engagement member 3424, or to release the engagement between the engagement member 3415 and the engagement member 3424.

[0057] In addition, when the engaging member 3415 is engaged with the engaging member 3424, even if a force is applied to the locking member 341 along the extension direction of the movable chamber 3421, the restricting action of the engaging structure formed by both of them prevents the locking member 341 from making a corresponding movement to make the movable chamber 3421 conductive, and only when the engagement between the engaging member 3415 and the engaging member 3424 is released can the force be applied by the above method to make the locking member 341 make or close the movable chamber 3421. Therefore, when the locking member 341 closes the movable chamber 3421, the movement of the locking member 341 can be restricted by the engagement between the engaging member 3415 and the engaging member 3424, thereby preventing the printing material from being erroneously led out due to the movable chamber 3421 being made conductive by erroneous operation of the locking member 341.

[0058] Moreover, the locking member 341 rotating on its own axis means that the locking member 341 rotates about its own axis as the center of rotation, thereby rotating the engaging member 3415 provided on the outer periphery of the locking member 341. In the process of the locking member 341 rotating, the first blocking portion 3411 and the second blocking portion 3412 rotate synchronously, and in order to facilitate the rotation of the first blocking portion 3411 and the second blocking portion 3412 accompanying the locking member 341, the first passage 34211, the movable region 301, and the third passage 34213 are all substantially cylindrical in shape.

[0059] Here, when the locking member 341 closes the movable chamber 3421, the engaging member 3415 and the engaging member 3424 can be engaged or disengaged by the rotation of the locking member 341, and when the locking member 341 makes the movable chamber 3421 conductive, the locking member 341 moves a certain distance along the extension direction of the movable chamber 3421, so that the engaging member 3415 and the engaging member 3424 are disengaged, and at this time, even if the locking member 341 rotates, the engaging member 3415 and the engaging member 3424 cannot be engaged. In other words, even if the movable chamber 3421 is conductive and printing material is supplied to the material tray 11, the rotation of the locking member 341 closes the movable chamber 3421 between the engaging member 3415 and the engaging member 3424, so that the supply of printing material is not affected.

[0060] Optionally, the engaging member 3424 includes an engaging portion 34242 and a first connecting portion 34241. The first connecting portion 34241 extends along the extending direction of the movable chamber 3421, and one end is connected to the inner wall of the material discharge chamber 3422 and the other end is connected to the engaging portion 34242, and the engaging portion 34242 and the first connecting portion 34241 are arranged to form an included angle. The engaging member 3415 includes an engaging portion 34152 and a second connecting portion 34151, and one end of the second connecting portion 34151 is connected to the connection body 3413 of the lock member 341 and the other end is connected to the engaging portion 34152, and the engaging portion 34152 and the second connecting portion 34151 are arranged to form an included angle. The attachment portion 34152 is used to engage with the engagement portion 34242, and specifically, the engagement is achieved by engagement between the included angle structure formed by the attachment portion 34152 and the second connecting portion 34151 and the included angle structure formed by the engagement portion 34242 and the first connecting portion 34241.

[0061] It should be understood that in other embodiments, the installation of the first connection portion 34241 may be canceled, and the engagement portion 34242 may be directly provided on the inner peripheral wall of the second passage 34212. Also, since the second passage 34212 directly communicates with the material discharge chamber 3422, a part of the second passage 34212 may be considered as a part of the material discharge chamber 3422. Based on this, the engagement member 3424 may be considered to be provided on the inner peripheral wall of the material discharge chamber 3422.

[0062] The lock member 341 rotates to engage the engaging member 3415 with the engaging member 3424 in the following manner: The first blocking portion 3411 moves away from the first passage 34211 to come into contact with the first stopper portion 304, and in the process of moving, the engaging portion 34152 overcomes the engaging portion 34242 to correspond to the engaging space formed by the engaging portion 34242 and the first connecting portion 34241. Then, a force is applied to the operating portion 3414 to rotate the lock member 341, and the engaging portion 34152 is screwed into the engaging space. At this time, the engaging portion 34152 and the engaging portion 34242 are engaged and fitted to each other, which prevents the entire lock member 341 from moving toward the first passage 34211 to cause the movable chamber 3421 to be electrically connected, thereby achieving the purpose of "locking." When it is necessary to make the movable chamber 3421 conductive, an acting force is applied to the operating portion 3414 to rotate the entire locking member 341, thereby screwing the engagement portion 34152 out of the engagement space and shifting the engagement portion 34152 and the engagement portion 34242. At this time, the entire locking member 341 is moved toward the first passage 34211 until the first blocking portion 3411 moves into the inside of the first passage 34211 to achieve conductivity between the first passage 34211 and the second passage 34212, thereby leading out the printing material through the movable chamber 3421 and the material discharge chamber 3422, i.e., achieving the purpose of "unlocking".

[0063] 12 and 13, in order to prevent the locking member 341 from affecting the conveying member 120 due to the excessive movement of the locking member 341 toward the first passage 34211, the locking body 342 optionally further includes a second stopper portion 305, which is provided inside the movable chamber 3421 and protrudes from the inner circumferential wall of the movable chamber 3421. When the locking member 341 makes the movable chamber 3421 conductive, the second stopper portion 305 is used to abut against the engaging member 3415 to limit the movement of the locking member 341. Here, the second stopper portion 305 is provided on the inner peripheral wall of the second passage 34212, and abuts against the engaging portion 34152 when the locking member 341 moves toward the first passage 34211 until the first passage 34211 and the second passage 34212 are conductive, thereby restricting the locking member 341 from continuing to move in a direction away from the second passage 34212. The provision of the second stopper portion 305 can provide a positioning effect for the locking member 341, in other words, it can be determined whether the locking member 341 moves to a predetermined position based on whether the engaging portion 34152 abuts against the second stopper portion 305 during the process of the locking member 341 moving toward the first passage 34211.

[0064] In some embodiments, the first stopper portion 304 and the second stopper portion 305 may be of the same structure, for example, the first stopper portion 304 and the second stopper portion 305 are integrally molded. Of course, the first stopper portion 304 and the second stopper portion 305 may be provided separately.

[0065] 5, 14, 15 and 16, in order to facilitate the discharge of the printing material, an outlet 3423 is optionally provided in the lock body 342, a guide groove 34231 is opened in the outlet 3423, the guide groove 34231 is connected to the material discharge chamber 3422, an outlet 331 is opened in the housing 330, and the outlet 3423 passes through the outlet 331 to the outside of the housing 330 to discharge the printing material. When the printing material is discharged from the material storage chamber 111 and introduced into the material discharge chamber 3422 by the movable chamber 3421, the printing material can be discharged by the guide groove 34231 of the outlet 3423 to easily introduce the printing material into the material tray 11. In addition, the installation of the outlet 331 in the housing 330 can easily correspond to the inlet of the material tray 11, thereby facilitating the installation of the material supply mechanism 14.

[0066] In another embodiment, the installation manner of the output assembly 300 may be different. For example, referring to FIG. 18 and FIG. 19, the output assembly 300 includes a material discharge member 310 and an opening / closing member 320. The material discharge member 310 is connected to the material storage 110, and the material discharge member 310 is further configured to be connected to the material tray 11, so that the material discharge member 310 guides the printing material to the material tray 11 to facilitate refilling the printing material. The material discharge member 310 has a material discharge passage 311 communicating with the material storage chamber 111, and the printing material in the material storage chamber 111 can enter the material discharge passage 311 and enter the material tray 11 through the guiding action of the material discharge passage 311. When the conveying member 120 rotates, the printing material in the material storage chamber 111 can enter the material discharge passage 311, and when it is led to the material tray 11 through the material discharge passage 311, the printing material in the material tray 11 can be refilled. The opening and closing member 320 is connected to the material discharge member 310, and the opening and closing member 320 is disposed in the material discharge passage 311, and the opening and closing member 320 is used to selectively open and close the material discharge passage 311. When the printing material needs to be replenished, the opening and closing member 320 can open the material discharge passage 311 and introduce the printing material into the material tray 11 through the material discharge passage 311; naturally, when the printing material does not need to be replenished, the opening and closing member 320 can close the material discharge passage 311.

[0067] In some embodiments, various methods may be adopted for the material discharge member 310 to introduce the printing material into the material tray 11. For example, as shown in Fig. 19, an introduction passage (not shown) is opened in the material tray 11, and the introduction passage is connected to a space in the material tray 11 for placing the printing material, and when the material storage body 110 is connected to the material tray 11, the material discharge passage 311 communicates with the introduction passage, so that the printing material can be introduced into the introduction passage through the material discharge passage 311, and the purpose of refilling the printing material in the material tray 11 can be achieved.

[0068] It should be noted that in some embodiments, the opening and closing member 320 is a normally closed switch, in other words, in the general case, the opening and closing member 320 closes the material discharge passage 311, and in this case, the opening and closing member 320 is at least partially located inside the material discharge passage 311 to achieve the purpose of closing the material discharge passage 311. On this basis, when the opening and closing member 320 is closed, the opening and closing member 320 can contact the printing material in the material discharge passage 311. Therefore, when the conveying member 120 rotates, the conveying member 120 can press the printing material to enter the material discharge passage 311, so that the printing material can apply pressure to the opening and closing member 320. In the present application, the opening and closing member 320 can selectively open and close the material discharge passage 311 based on the pressure received from the printing material, for example, in some embodiments, the opening and closing member 320 can open the material discharge passage 311 when the pressure received from the printing material reaches a predetermined pressure, and the opening and closing member 320 can close the material discharge passage 311 when the pressure received from the printing material is less than the predetermined pressure. Optionally, in some embodiments, the transport member 120 realizes introducing printing material into the material discharge passage 311 when rotating forward.

[0069] When there is a sufficient amount of printing material in the material storage chamber 111, the force that the printing material applies to the opening / closing member 320 is determined by the rotation speed of the transport member 120. When the transport member 120 rotates forward, the faster the transport member 120 rotates, the greater the pressure that the printing material applies to the opening / closing member 320. When the transport member 120 rotates reversely, the printing material transport direction is opposite to the printing material transport direction when the transport member 120 rotates forward. In other words, when the transport member 120 rotates reversely, the printing material is transported in a direction away from the opening / closing member 320, and at this time, the printing material applies almost no pressure to the opening / closing member 320. Optionally, in some embodiments, when the drive device 20 rotates forward at a predetermined operating speed, the drive device 20 drives the conveying member 120 to rotate at a predetermined speed, and the pressure applied by the printing material to the opening / closing member 320 is the predetermined pressure; in other words, when the drive device 20 rotates forward at an operating speed lower than the predetermined speed, the pressure applied by the printing material to the opening / closing member 320 is less than the predetermined pressure, and naturally, when the drive device 20 rotates reversely, the pressure applied by the printing material to the opening / closing member 320 is less than the predetermined pressure.

[0070] Based on the above, the method of the material supply mechanism 14 provided in the present application for conveying the printing material is roughly as follows: When the printing material needs to be replenished in the material tray 11, the driving device 20 is controlled to rotate forward at an operating speed equal to or higher than a predetermined speed, so that the pressure applied by the printing material to the opening and closing member 320 is equal to or higher than a predetermined pressure, thereby making the opening and closing member 320 open the material discharge passage 311, and the purpose of introducing the printing material into the material tray 11 through the material discharge passage 311 can be realized, so that the printing material can be replenished in the material tray 11. When there is enough printing material in the material tray 11, that is, when there is no need to replenish the printing material in the material tray 11, the driving device 20 is controlled to rotate forward at an operating speed lower than a predetermined speed, or the driving device 20 is controlled to rotate reversely, so that when the pressure applied by the printing material to the opening and closing member 320 is lower than the predetermined pressure, the opening and closing member 320 can close the material discharge passage 311 by itself, so that the introduction of the printing material into the material tray 11 can be stopped. Naturally, when the opening / closing member 320 is closed and the conveying member 120 is maintained rotating, the conveying member 120 can rotate to agitate the printing material in the material storage chamber 111, thereby preventing the printing material from being left in the material storage chamber 111 for a long period of time and forming a precipitate.

[0071] In addition, the 3D printer 10 further includes a liquid level detection mechanism, which may be provided inside the material tray 11, and the liquid level detection mechanism may detect the liquid level of the printing material in the material tray 11. Referring to FIG. 46, the material supply mechanism 14, the material tray assembly, or the 3D printer 10 may further include a control module 19, which is connected to the drive device 20, and the control module 19 is further electrically connected to the liquid level detection mechanism, and is used to control the operation of the drive device 20 to introduce the printing material into the material tray 11 when the liquid level detection mechanism detects that the liquid level of the printing material in the material tray 11 is lower than a predetermined level. In other words, the liquid level detection mechanism can monitor whether there is enough printing material in the material tray 11, and if there is enough printing material, the liquid level detection mechanism will not trigger the control module 19 to control the operation of the drive device 20; if the liquid level detection mechanism detects that there is insufficient printing material in the material tray 11, it will trigger the control module 19 to control the operation of the drive device 20, thereby enabling the printing material to be replenished in the material tray 11 automatically and in a timely manner.

[0072] It should be noted that in some embodiments, at least a part of the structure of the level detection mechanism is provided inside the storage space of the material tray 11, in other words, the level detection mechanism can directly contact the printing material, thereby detecting the level of the printing material. It should be understood that in other embodiments of the present application, the level detection mechanism may use other methods to detect the printing material in the material tray 11, for example, the level detection mechanism may be installed outside the material tray 11, and the level detection mechanism may monitor the level of the printing material inside the material tray 11 by a scanning method. Here, the scanning method of the level detection mechanism provided above may be as follows. The material tray 11 can be made of a transparent material, and in this case, even if the level detection mechanism is provided outside the material tray 11, it can still perform scanning monitoring of the level of the printing material inside the material tray 11, or the level detection mechanism can be provided at the opening of the storage space of the material tray 11, so that the level detection mechanism can scan from the opening of the storage space toward the inside of the storage space, thereby achieving the purpose of monitoring the level of the printing material in the material tray 11.

[0073] 1, the present application provides a 3D printer 10, which in one embodiment can be used to print a three-dimensional model, in other words, the 3D printer 10 can process a printing material and mold the printing material into a specified three-dimensional shape. Note that the printing material can be a powder, liquid, or solid-liquid mixture, such as a photocurable printing material, where a photosensitive resin can be used as the printing material in some embodiments of the present application.

[0074] The 3D printer 10 may include a material tray 11, a molding stage 12, and a light source 13. The molding stage 12 is located on the top side of the material tray 11. The material tray 11 is used to hold a printing material, and the printing material is used to manufacture a three-dimensional article, and the light source 13 is located on the bottom side of the material tray 11, and light is transmitted through the bottom of the material tray 11, and the light source 13 is used to project a light beam toward the material tray 11, so that a polymerization reaction occurs in the printing material located between the molding stage 12 and the bottom of the material tray 11, and a hardened sheet material is obtained, and the hardened sheet material is bonded to the molding stage 12, and then the molding stage 12 is moved away from the bottom of the material tray 11, and the light source 13 is made to project the light source 13 discontinuously or continuously on the bottom of the material tray 11, so that the hardened sheet material layer by layer is finally formed into a three-dimensional article.

[0075] In addition, the 3D printer in this embodiment may include the structure of the 3D printer in the above embodiment, or may not include the above structure, and is not limited here.

[0076] Furthermore, in this embodiment, the 3D printer 10 may further include a liquid level detection mechanism, which may be provided in the material tray 11, and may detect the level of the printing material in the material tray 11. In one embodiment, the 3D printer 10 may further include a control module 19, and the liquid level detection mechanism is electrically connected to the control module 19.

[0077] Specifically, in some embodiments, referring also to Figures 56 to 60, the liquid level detection mechanism includes a detection assembly 802 and a processing assembly 803 which are removably connected, and the detection assembly 802 is provided in the material tray 11, enters the liquid storage area of ​​the material tray 11, and combines with the processing assembly 803 to realize detection of the liquid level of the printing material in the material tray 11.

[0078] The liquid storage area of ​​the material tray 11 is used to hold the printing material, and as shown in Figures 56-57, the processing assembly 803 may be provided with contacts, and the detection assembly 802 may be provided with contacts matching the contacts, and the two may be connected by a method such as insertion or abutment, thereby realizing a removable connection and electrical connection between the detection assembly 802 and the processing assembly 803. Of course, the connection between the two may also be realized in the form of an elastic sheet or the like, and is not limited here.

[0079] Further, the detection assembly 802 may include a corresponding detection circuit (e.g., a detection chip 8021) and a detection member 8022. The detection member 8022 is a special electronic element that sensitively senses certain physical, chemical, or biological information and converts it into electrical information, which can be connected to the detection chip 8021, and the outer wall of the detection chip may be provided with a contact point that connects to the processing assembly 803, and the detection member can enter the liquid storage area of ​​the material tray 801 and contact the printing material placed in the material tray 11. Here, the detection assembly 802 may include one or more detection members 8022, for example, one, two, three, four, etc., but are not limited here.

[0080] It should be noted that when the level detection mechanism detects the level of the printing material in the material tray 11, the change in the level of the printing material affects the medium between the detection members in the detection assembly 802. Specifically, the detection member 8022 may be a probe, and the change in the level of the printing material affects the medium between the probe (i.e., the air changes to the printing material, and the dielectric constant changes), thereby changing the equivalent capacitance value of the probe, and the change in the capacitance value is converted into a change in the DC voltage amount through the detection chip. Furthermore, the processing assembly 803 and the detection assembly 802 are detachably connected, and the processing assembly 803 can be connected to the control module 19, so that the control module 19 can collect the voltage amount converted by the detection assembly 802, and the actual liquid level can be indicated by the voltage amount, thereby completing the detection of the liquid level of the printing material. Thus, in the detection process, the detection assembly 802 directly contacts the printing material to perform detection, and the subsequent processing can be realized by the processing assembly 803 connected to the detection assembly 802.

[0081] Furthermore, because the detection assembly 802 and the processing assembly 803 are detachably connected, such a design allows the detection assembly 802 to be removed and replaced together with the material tray 11 after each detection is completed, thereby solving the problem of cross-contamination between different printing materials, and the user does not need to clean, maintain, etc. the detection assembly 802, thereby bringing great convenience to the user's use. In the application scenario, the detection member 8022 is a metal probe with a relatively low cost, thus bringing great convenience to the user's use with little increase in the usage cost. Furthermore, the material tray 11 may be a disposable material tray 11, and the detection assembly 802 and the material tray 11 can be disposed of together after use.

[0082] 58-60, in some embodiments, the sensing assembly 802 includes a sensing tip 8021 and a plurality of sensing members 8022.

[0083] The detection chip 8021 is provided on the material tray 11 or on another structure other than the material tray 11 of the 3D printer, and each detection member 8022 is removably or fixedly connected to the detection chip 8021 after being installed in a predetermined position, and each detection member 8022 is within the liquid storage area of ​​the material tray 11. The detection chip 8021 can be used to perform initial processing on the electrical signal transmitted from the detection unit 8022.

[0084] Here, the detection chip 8021 may be provided in the material tray 11, for example, the detection chip 8021 may be provided on the side wall of the material tray 11, specifically as shown in FIG.

[0085] Specifically, the material tray 11 can have an opening in its side wall, and a contact (located at the processing assembly 803 shown in FIG. 56) can be provided on the 3D printer body, and the contact is connected to the processing assembly 803 and is used to electrically connect the detection chip 8021 and the processing assembly 803 after the contact point of the detection chip 8021 comes into contact with the contact.

[0086] 59 and 60, each probe may be designed with a bent portion, and the bent portion of each probe may be provided perpendicular to the inner bottom wall of the material tray 11 so that the bent portion of the probe can easily contact the printing material in the material tray 11. The probe may have other structures to contact the printing material placed in the material tray 11, and is not limited here.

[0087] In some embodiments, each detection member 8022 in the detection assembly 802 is removably or fixedly connected to the detection chip 8021, so that when the detection chip 8021 is provided at a position other than the material tray 11 of the 3D printer, the detection member 8022 can be removed from the detection chip 8021 and replaced after each detection is completed, or when the detection chip 8021 is provided at the material tray 11, the entire detection assembly 802 can be removed from the point where it is removably connected to the processing assembly 803 and replaced.

[0088] Furthermore, in order to avoid a situation where the detection is inaccurate due to the influence of temperature, material, etc. when detecting the liquid level using two detection elements 8022, a third detection element 8022 may be installed so that the distance between one end that contacts the printing material and the bottom wall of the material tray 11 is equal to the maximum liquid level value of the material tray 11. When the liquid level becomes high and the printing material begins to cover the third detection element 8022, a sudden change occurs in the equivalent capacity formed by the detection element 8022. When the capacity suddenly changes, this indicates that the liquid level of the printing material has been added to the upper limit, and the addition of the printing material can be stopped at this time.

[0089] It should be understood that in other embodiments, the installation of the liquid level detection mechanism may be eliminated.

[0090] As described above, the material supply mechanism 14 provided in the present application and the 3D printer 10 using the material supply mechanism 14 can store some printing material in advance in the material storage body 110, and when the transmission assembly 200 drives the rotation of the conveying member 120, the conveying member 120 can convey the printing material in the material storage body 110 into the material tray 11 through the material discharge member 310, thereby achieving the purpose of replenishing the printing material. Of course, here, when the conveying member 120 conveys the printing material, the conveying member 120 presses the printing material toward the opening and closing member 320 so that the printing material applies pressure to the opening and closing member 320, and when the pressure received by the opening and closing member 320 from the printing material is equal to or greater than a predetermined pressure, the opening and closing member 320 can be opened, thereby conveying the printing material. Accordingly, when the pressure that the opening / closing member 320 receives from the printing material falls below a predetermined pressure, the opening / closing member 320 closes, and when the opening / closing member 320 is closed, the printing material cannot be transported even if the transport member 120 rotates, and at this time, the printing material can be stirred, thereby preventing the precipitation of the printing material. Therefore, the material supply mechanism 14 provided in the present application not only replenishes the printing material in a timely manner to the material tray 11 and improves the convenience of replenishing the printing material, thereby improving the technical problem of the difficulty of replenishing the printing material in the prior art, but also prevents the precipitation of the printing material in the material storage chamber 111.

[0091] In some embodiments, the opening / closing member 320 is a check valve, and when the opening / closing member 320 opens the material discharge passage 311, the printing material can be moved from the material storage chamber 111 to the material tray 11. That is, when the opening / closing member 320 is open, the printing material can be moved from inside the material storage chamber 111 to the material tray 11, but the printing material cannot flow back from the material tray 11 to the material storage chamber 11. This makes it possible to prevent the printing material from flowing back, and to improve the conveying efficiency of the printing material. In addition, because the opening / closing member 320 is a check valve, when the conveying member 120 rotates in the reverse direction, it is also possible to prevent the printing material in the material tray 11 from being discharged.

[0092] In some embodiments, the material discharge member 310 is connected to the material storage 110 and located at one axial end of the material storage chamber 111, and the transmission assembly 200 is located at the other axial end of the material storage chamber 111 accordingly, which facilitates the installation of the transmission assembly 200 and the connection with the driving device 20. Based on this, referring to Fig. 19, the material supply mechanism 14 further includes an intake valve 500, which is provided inside the material storage chamber 111 and located at the end of the material storage chamber 111 away from the material discharge member 310, and the intake valve 500 is configured to allow the external air flow to flow into the material storage chamber 111. In other words, the intake valve 500 can balance the air pressure in the material storage chamber 111, so that the air pressure in the material storage chamber 111 is approximately equal to the external atmospheric pressure, making it easy to discharge the printing material in the material storage chamber 111.

[0093] Optionally, the intake valve 500 is a check valve, so that when the air pressure in the material storage chamber 111 is balanced by the intake valve 500, leakage of the printing material from the intake valve 500 can be prevented.

[0094] 1, the present application provides a 3D printer 10, which in one embodiment can be used to print a three-dimensional model, in other words, the 3D printer 10 can process a printing material and mold the printing material into a specified three-dimensional shape. Note that the printing material can be a powder, liquid, or solid-liquid mixture, such as a photocurable printing material, where a photosensitive resin can be used as the printing material in some embodiments of the present application.

[0095] The 3D printer 10 may include a material tray 11, a molding stage 12, and a light source 13. The molding stage 12 is located on the top side of the material tray 11. The material tray 11 is used to hold a printing material, and the printing material is used to manufacture a three-dimensional article, and the light source 13 is provided on the bottom side of the material tray 11, and light is transmitted to the bottom of the material tray 11, and the light source 13 is used to project a light beam toward the material tray 11, so that a polymerization reaction occurs in the printing material located between the molding stage 12 and the bottom of the material tray 11, and a hardened sheet material is obtained, and the hardened sheet material is bonded to the molding stage 12, and then the molding stage 12 is moved away from the bottom of the material tray 11, and the light source 13 is made to project the light source 13 discontinuously or continuously on the bottom of the material tray 11, so that the hardened sheet material layer by layer is finally formed into a three-dimensional article.

[0096] In addition, the 3D printer in this embodiment may include the structure of the 3D printer in the above embodiment, or may not include the above structure, and is not limited here.

[0097] 20, 21 and 22, in this embodiment, the 3D printer 10 further includes a frame 15, a mounting seat 16, and a film tensioning member 18. Of these, the mounting seat 16 is attached to the frame 15, and the film tensioning member 18 is provided on the mounting seat 16. The material tray 11 includes a release film 27, and is configured to be movable relative to the frame 15 so that the release film 27 provided on the material tray 11 can contact and be pulled by the film tensioning member 18 provided on the mounting seat 16.

[0098] Referring to FIG. 20, the 3D printer 10 further includes a lifting mechanism 17. The lifting mechanism 17 is provided on the frame 15, and the molding stage 12 is provided on the lifting mechanism 17. The lifting mechanism 17 is used to drive the molding stage 12 to approach and move away from the material tray 11. When the lifting mechanism 17 drives the molding stage 12 to approach the material tray 11, the printing material provided in the material tray 11 is located between the release film 27 and the molding stage 12, and is cured by irradiation of the light source 13 and adhered to the molding stage 12. Then, the lifting mechanism 17 drives the molding stage 12 to move away from the material tray 11. When the lifting mechanism 17 drives the molding stage 12 to approach and move away from the material tray 11, and the light source 13 projects the light source 13 discontinuously or continuously onto the light-transmitting bottom of the material tray 11, curing is realized layer by layer.

[0099] Here, the film tensioning member 18 can be selected according to need, and can be, for example, a transparent flat plate member, a ring frame, four protrusions, two opposing protrusions, a display screen, etc. The shape and structure of the film tensioning member 18 can be selected as long as it can ensure that the release film 27 fitted into the film tensioning member 18 is pushed up and the area where the release film 27 is pushed up can maintain a flat state. Furthermore, the manner in which the film tensioning member 18 is mounted on the mounting seat 16 can be selected according to need, and in this embodiment, the film tensioning member 18 is welded to the mounting seat 16, and of course, in other embodiments, the film tensioning member 18 can be connected to the mounting seat 16 by a fastener such as a screw, or the film tensioning member 18 can be fastened to the mounting seat 16, and there is no particular limitation here.

[0100] The light source 13 can also be selected according to need. Here, in an embodiment where the light source 13 is an LCD light source module, the film tensioning member 18 provided on the mounting seat 16 can be an LCD display screen. In other embodiments, the light source 13 can be a laser light source corresponding to SLA printing and a light source for a photocuring printing method corresponding to surface exposure, and the light source for surface exposure includes, but is not limited to, a DLP light source module, an LCD light source module, an LCOS light source module, an OLED light source module, etc., and is not particularly limited here.

[0101] The material of release film 27 can be selected as needed, and examples thereof include, but are not limited to, polytetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (also called perfluoroethylene propylene copolymer, FEP), polydimethylsiloxane (PDMS), perfluoropolyether (PFPE), polyethylene (PE), melt-soluble polytetrafluoroethylene (PFA), polymer polypropylene (PP), polymethylpentene (PMP), ethylene-tetrafluoroethylene copolymer (ETFE), ultra-high molecular weight polyethylene (UHMWP), and the like.

[0102] 20 to 22, in this embodiment, the material tray 11 is configured to be slidably fitted into the frame 15, and the material tray 11 has a fixed position, and the release film 27 moves in a direction approaching the film tensioning member 18 along with the material tray 11 in the process of the material tray 11 moving in the first direction a relative to the frame 15, and when the material tray 11 moves to the fixed position, the release film 27 can contact the film tensioning member 18 and is pulled by the film tensioning member 18. In this manner, when the release film 27 needs to be pulled, the material tray 11 is only required to move in the first direction a relative to the frame 15, and when the material tray 11 moves to the fixed position, the release film 27 is pulled by the film tensioning member 18, so that the method of pulling the release film 27 is easy to operate. In one application scenario, the material tray 11 needs to move to the fixed position in the first direction a relative to the frame 15 in the process of being attached to the frame 15, so that the attachment and pulling of the release film 27 are completed simultaneously.

[0103] Further, still referring to Figures 20 and 22, the mounting seat 16 is movably mounted on the frame 15, the mounting seat 16 is configured to slide along the second direction b relative to the frame 15, and the mounting seat 16 has a predetermined position, the first direction a and the second direction b are arranged to form an included angle, and in the process of the material tray 11 sliding in the first direction a and the mounting seat 16 sliding in the second direction b, the gap distance between the material tray 11 and the mounting seat 16 gradually becomes smaller, so that the gap distance in the vertical direction, i.e., along the height direction of the material tray 11, between the release film 27 provided on the material tray 11 and the film pulling member 18 assembled to the mounting seat 16 gradually becomes smaller, and when the material tray 11 is located at a fixed position and the mounting seat 16 is located at a predetermined position, the release film 27 is able to come into contact with the film pulling member 18 and is pulled by the film pulling member 18. In this manner, in order to prevent the release film 27 from being damaged by friction before the material tray 11 moves to the fixed position, the release film 27 is distributed at intervals in the vertical direction relative to the film tensioning member 18. When the material tray 11 moves to the fixed position and the mounting seat 16 moves to a predetermined position, the release film 27 comes into contact with the film tensioning member 18 and is tensioned, so that the release film 27 can be easily tensioned.

[0104] In this embodiment, the mounting seat 16 is slidably mounted on the frame 15. In another embodiment, rollers may be provided on the mounting seat 16, so that the mounting seat 16 is rollably mounted on the frame 15 by utilizing the rolling motion of the rollers.

[0105] 22 to 24, the 3D printer 10 of this embodiment further includes a guide unit 700, which is provided on the frame 15, and the material tray 11 slidably fits into the guide unit 700. In this manner, the material tray 11 can be guided so as to move stably and reliably relative to the frame 15.

[0106] The guide unit 700 can be selected as needed. Referring to Figures 20 to 24, in this embodiment, the guide unit 700 includes a first slide rail 710, the first slide rail 710 is provided on the frame 15, a first slider 730 is provided on the material tray 11, the first slide rail 710 extends in a first direction a, the first slider 730 is slidably fitted to the first slide rail 710, a second slide rail 720 is further provided on the frame 15, a second slider 740 is provided on the mounting seat 16, and the second slide rail 720 is a second The first slider 730 extends in the direction b, and the second slider 740 is slidably fitted into the second slide rail 720. Thus, when the first slider 730 slides in the first slide rail 710 and the second slider 740 slides in the second slide rail 720, the material tray 11 moves in the first direction a, and the mounting seat 16 moves in the second direction b, and the vertical distance between them gradually decreases, and when the material tray 11 moves to a fixed position and the mounting seat 16 moves to a predetermined position, the release film 27 comes into contact with and is pulled by the film pulling member 18. In this way, not only can the stable sliding between the material tray 11 and the mounting seat 16 be ensured, but also the easy pulling operation of the release film 27 can be ensured, and the problem that the release film 27 is easily damaged can be improved.

[0107] It should be understood that in other embodiments, the guide portion 700 includes a first slider 730 provided on the frame 15, and a first slide rail 710 is provided on the material tray 11, and in other embodiments, a second slide rail 720 is provided on the mounting seat 16, and a second slider 740 is provided on the frame 15, and this is not particularly limited here.

[0108] 20 and 22, the first direction a is an inclined direction, and the second direction b is a horizontal direction. In the process of the material tray 11 moving in the first direction a and the mounting seat 16 moving in the second direction b, the material tray 11 approaches the mounting seat 16 diagonally downward, that is, the gap between the material tray 11 and the mounting seat 16 gradually becomes smaller, and when the material tray 11 is located at a fixed position and the mounting seat 16 is located at a predetermined position, the film tensioning member 18 provided on the mounting seat 16 comes into contact with the release film 27 provided on the material tray 11 and pulls the release film 27.

[0109] Referring to FIG. 24 , in another embodiment, the first direction a is a horizontal direction, and the second direction b is an inclined direction. In the process of the material tray 11 moving in the first direction a and the mounting seat 16 moving in the second direction b, the mounting seat 16 approaches the material tray 11 diagonally upward, that is, the gap between the material tray 11 and the mounting seat 16 gradually becomes smaller, and when the material tray 11 is located at a fixed position and the mounting seat 16 is located at a predetermined position, the film tensioning member 18 provided on the mounting seat 16 contacts the release film 27 provided on the material tray 11 and pulls the release film 27.

[0110] 20 to 25, the 3D printer 10 further includes a stop member 600, which is connected to the mounting seat 16, and during the process of the material tray 11 moving in the first direction a, one end of the material tray 11 can abut against the stop member 600 and can push the stop member 600 to move synchronously with the mounting seat 16. In this way, by using the stop member 600 to move the material tray 11 synchronously with the mounting seat 16, it is possible to ensure that when the material tray 11 moves to a fixed position and the mounting seat 16 moves to a predetermined position, the release film 27 can reliably come into contact with the film tension member 18 and be pulled.

[0111] In another embodiment, the stop member 600 is connected to the material tray 11, and in the process of the material tray 11 moving in the first direction a, the material tray 11 drives the stop member 600 to move synchronously, so that the stop member 600 can drive the synchronous movement of the mounting seat 16.

[0112] Optionally, the frame 15 is further provided with a third slide rail, and the stop member 600 is slidably fitted into the third slide rail, i.e., when the material tray 11 abuts against the stop member 600 and further presses the stop member 600, the stop member 600 can slide along the third slide rail.

[0113] The stop member 600 can be selected as needed, and may be, for example, a stop block, a stop plate, or a stop rod, and is not particularly limited here.

[0114] Optionally, the connection manner between the mounting base 16 and the stop member 600 includes, but is not limited to, connection via a magnet, a magnetic metal, etc., so that when the material tray 11 exits from the fixed position and drives the movement of the stop member 600, the stop member 600 can be used to reliably drive the mounting base 16 to exit from the predetermined position.

[0115] 23 and 25, the 3D printer 10 further includes an elastic member 610, which is configured to apply a force to the mounting seat 16 in a direction opposite to the second direction b when the mounting seat 16 is located at a predetermined position or in the process of moving toward the predetermined position along the second direction b, so that the mounting seat 16 has a tendency to move away from the predetermined position. The installation position of the elastic member 610 can be selected as needed, and in this embodiment, the elastic member 610 is provided between the mounting seat 16 and the frame 15. In this way, when the material tray 11 moves out of the fixed position in the direction opposite to the first direction a, the mounting seat 16 can move out of the predetermined position in the direction opposite to the second direction b due to the elastic force action of the elastic member 610, that is, the mounting seat 16 can be automatically restored.

[0116] Furthermore, both ends of the elastic member 610 are connected to the frame 15 and the second slider 740, respectively; it should be understood that in other embodiments, both ends of the elastic member 610 may be connected to the frame 15 and the mounting seat 16, respectively.

[0117] It should be noted that the elastic member 610 may be a spring, an elastic rubber strip, or the like, and is not particularly limited here.

[0118] In another embodiment, the elastic member 610 may be provided between the stop member 600 and the frame 15, and configured to cause the mounting seat 16 to move in a direction opposite to the second direction b and have a tendency to retreat from the predetermined position. In this manner, by using the elastic force action of the elastic member 610 to push the stop member 600, the material tray 11 can be moved in a direction retreating from the fixed position, and the mounting seat 16 can be moved in a direction retreating from the predetermined position.

[0119] In other embodiments, the elastic member 610 may not be provided, and a slope may be provided on the frame 15, so that the mounting seat 16 can move out of the predetermined position by its own gravity along the slope, and the mounting seat 16 can continue to slide in the second direction b along the slope or slide in the direction opposite to the second direction b to move out of the predetermined position.

[0120] Optionally, in another embodiment, the stop member 600 is connected to the material tray 11, and when the material tray 11 is moved in a direction opposite to the first direction a, the material tray 11 can be driven to move the stop member 600 synchronously when the material tray 11 is moved out of the fixed position, and the stop member 600 drives the mounting seat 16 to move out of the predetermined position in a direction opposite to the second direction b. Furthermore, the stop member 600 and the material tray 11 can be connected via a magnet, a magnetic metal, or the like, or the material tray 11 can be slidably connected to the stop member 600, and the material tray 11 can move up and down relative to the stop member 600, which is not particularly limited here.

[0121] 23 and 25, the 3D printer 10 further includes a first positioning member 620, the first positioning member 620 is provided on the frame 15, and a second positioning member 630 is provided on the material tray 11, and when the material tray 11 is moved to the fixed position, the second positioning member 630 engages with the first positioning member 620 to lock the material tray 11 in the fixed position. In this way, the engagement between the first positioning member 620 and the second positioning member 630 is utilized to resist the elastic force action of the elastic member 610, and the situation in which the material tray 11 unexpectedly leaves the fixed position and the mounting seat 16 unexpectedly leaves the predetermined position can be improved.

[0122] The first positioning member 620 can be selected according to need, for example, the first positioning member 620 can be a pressing repulser, the second positioning member 630 is a touch member provided at the upstream end of the material tray 11 and fitted into the pressing repulser, when the material tray 11 moves to the fixed position, the touch member fits into the pressing repulser, that is, the touch member is inserted into the pressing repulser, it can lock the position of the material tray 11, when the material tray 11 needs to be removed, the pressing repulser can loosen the touch member by pressing the material tray 11. Or, the first positioning member 620 can be a nut provided on the frame 15, the second positioning member 630 is a bolt provided on the material tray 11, when the material tray 11 moves to the fixed position, the bolt is screwed into the nut, it can lock the material tray 11 in the fixed position.

[0123] 26 to 29, in this embodiment, the first positioning member 620 has a positioning groove 640, and has a bottom wall 641 and a top wall 642 that are oppositely distributed and define the positioning groove 640, and a connecting wall 643 connected between the bottom wall 641 and the top wall 642. The bottom wall 641 has a first leveling protrusion 644 and a second leveling protrusion 645, the connecting wall 643 has a first positioning protrusion 646, and the top wall 642 has a second positioning protrusion 647. The positioning groove 640 includes an entry portion 648 and a locking portion 649 that communicate with each other, and along the direction in which the entry portion 648 points toward the locking portion 649, the first leveling protrusion 644 and the second leveling protrusion 645 are sequentially arranged in the entry portion 648, the first positioning protrusion 646 and the second positioning protrusion 647 are both distributed in the locking portion 649, and the second positioning protrusion 647 is located adjacent to the entry portion 648, i.e., the second positioning protrusion 647 is closer to the entry portion 648 than the first positioning protrusion 646.

[0124] Furthermore, the second positioning member 630 includes a pin 650 rotatably connected to the main body of the material tray 11, and the pin 650 can be inserted into the positioning groove 640. Specifically, the pin 650 includes two flat surfaces 651 and two concave surfaces 652, the two flat surfaces 651 are arranged back to back and spaced apart, the two concave surfaces 652 are arranged back to back and spaced apart, and the two flat surfaces 651 are connected between the two concave surfaces 652. Furthermore, the two flat surfaces 651 can be arranged parallel to each other, and the two concave surfaces 652 can be V-shaped and symmetrically arranged. Of course, in other embodiments, the included angle of the extending surfaces of the two flat surfaces 651 can be 1°, 2°, etc., the two concave surfaces 652 can be U-shaped, or the two concave surfaces 652 can be V-shaped and U-shaped, respectively, and there is no particular limitation here.

[0125] Referring to Figures 28 to 32, when the material tray 11 moves to the fixed position, either the concave surface 652 or the flat surface 651 can abut against at least one of the first leveling protrusion 644 and the second leveling protrusion 645, thereby causing the index pin 650 to rotate within the entry portion 648 until either the flat surface 651 is aligned with the first direction a, i.e., parallel or approximately parallel, and the index pin 650 can then slide into the lock portion 649.

[0126] When the insert pin 650 slides into the positioning groove 640, specifically, when the insert pin 650 slides into the locking portion 649, one concave surface 652 can abut against the first positioning protrusion 646, and under the elastic force of the elastic member 610, the material tray 11 can move in a direction away from the fixed position (i.e., in a direction from the locking portion 649 toward the entry portion 648) to allow the other concave surface 652 to abut against the second positioning protrusion 647. When the second positioning protrusion 647 is blocked, the insert pin 650 can rotate relative to the main body of the material tray 11. When the insert pin 650 rotates until one of the two flat surfaces 651 of the insert pin 650 abuts against the bottom wall 641 and the top wall 642, respectively, and the corresponding concave surface 652 still abuts against the second positioning protrusion 647, the insert pin 650 is positioned in the positioning groove 640 and the material tray 11 is locked in the fixed position.

[0127] Specifically, the process in which the material tray 11 moves to the fixed position includes the following cases:

[0128] a) Referring to Figures 28 and 29, during the process of the material tray 11 moving to the fixed position, when the insert pin 650, which moves synchronously with the material tray 11, enters the positioning groove 640, one of the planes 651 abuts against the first leveling protrusion 644. Due to the blocking of the first leveling protrusion 644, the insert pin 650 rotates relative to the main body of the material tray 11 while moving in the first direction a with the material tray 11. When the insert pin 650 enters the entry portion 648, the corresponding plane 651 coincides with the first direction a, i.e., parallel or approximately parallel, i.e., when the material tray 11 is moved to the fixed position, one plane 651 abuts the first leveling protrusion 644 and the index pin 650 can be rotated within the entry portion 648 until either plane 651 coincides with the first direction a, at which time the index pin 650 abuts neither the first leveling protrusion 644 nor the second leveling protrusion 645, i.e., the index pin 650 can move from the entry portion 648 to the lock portion 649 without being blocked.

[0129] b) Referring to FIG. 30, during the process of the material tray 11 moving to the fixed position, when the insert pin 650, which moves synchronously with the material tray 11, enters the positioning groove 640, one concave surface 652 abuts against the first leveling protrusion 644, and when the first leveling protrusion 644 is blocked, the insert pin 650 rotates relative to the main body of the material tray 11 while moving in the first direction a along with the material tray 11, and when the insert pin 650 enters the entry portion 648, one flat surface 651 can abut against the second leveling protrusion 645, and when the second leveling protrusion 645 is blocked, the insert pin 650 continues to rotate relative to the material tray 11 while moving in the first direction a along with the material tray 11, and before the insert pin 650 moves from the entry portion 648 to the lock portion 649, the corresponding flat surface 651 can be rotated until it coincides with the first direction a, so that the insert pin 650 can enter the lock portion 649 without being blocked by any protrusion.

[0130] c) Referring to FIG. 31 , during the process of the material tray 11 moving to the fixed position, any one of the planes 651 coincides with the first direction a, and during the process of the insert pin 650 moving synchronously with the material tray 11, the insert pin 650 does not abut against either the first leveling protrusion 644 or the second leveling protrusion 645, that is, the insert pin 650 can be directly inserted into the entry portion 648 of the positioning groove 640 without being blocked, and move synchronously with the material tray 11 to enter the locking portion 649 of the positioning groove 640.

[0131] Although the material tray 11 allows the insert pin 650 to enter the locking portion 649 when any of the planes 651 coincide with the first direction a in any of the above cases, referring to FIG. 31, after the insert pin 650 enters the locking portion 649, one concave surface 652 can abut against the first positioning protrusion 646, and at this time, due to the elastic force of the elastic member 610, the material tray 11 can move in a direction away from the fixed position to allow the other concave surface 652 to abut against the second positioning protrusion 647, and the blocking of the second positioning protrusion 647 allows the insert pin 650 to rotate relative to the material tray 11, and when the insert pin 650 abuts against the bottom wall 641 and the corresponding concave surface 652 still abuts against the second positioning protrusion 647, the material tray 11 is locked in the fixed position.

[0132] d) Referring to FIG. 32, when the material tray 11 locked in the fixed position moves in a direction approaching the first positioning protrusion 646, for example, a force is applied to the material tray 11 in a direction from the entrance portion 648 toward the locking portion 649 to move the material tray 11 toward the first positioning protrusion 646, and one flat surface 651 abuts against the first positioning protrusion 646. Due to the existence of the elastic member 610, the material tray 11 moves in a direction away from the fixed position due to the elastic force of the elastic member 610, and the other flat surface 651 abuts against the second positioning protrusion 647. When the second positioning protrusion 647 is blocked, the index pin 650 rotates relative to the main body of the material tray 11 until one of the flat surfaces 651 coincides with the first direction a, and the material tray 11 is unlocked at the fixed position. The index pin 650 can move from the locking portion 649 to the entrance portion 648, and can exit the positioning groove 640 from the entrance portion 648.

[0133] In addition, along the direction perpendicular to the plane 651, the width of the insert pin 650 is smaller than the diameter of the connection point between the locking portion 649 and the entry portion 648 of the positioning groove 640, thereby ensuring that the insert pin 650 can enter the locking portion 649 when the plane 651 coincides with the first direction a.

[0134] As in the above embodiments, in some application scenarios, the bottom wall 641 may not have the second leveling protrusion 645, and in other application scenarios, the bottom wall 641 may not have the first leveling protrusion 644 and the second leveling protrusion 645.

[0135] In addition, based on the above method, in the process of mounting the material tray 11, the material tray 11 provided with the release film 27 is moved in the first direction a, and the mounting seat 16 is moved in the second direction b, so that the material tray 11 moves to a fixed position, and when the mounting seat 16 moves to a predetermined position, the film tensioning member 18 contacts the release film 27 and pulls the release film 27, and the material tray 11 is locked in the fixed position by the engagement between the first positioning member 620 and the second positioning member 630, thereby realizing the locking of the material tray 11 and the film tensioning in one step. In addition, after the material tray 11 moves to the fixed position, the detection assembly 802 of the liquid level detection mechanism is aligned with the processing assembly 803 to achieve electrical connection and is in a state of being turned on, and the identifier on the material tray 11 is aligned with the identification mechanism mounted on the 3D printer body, and the identification mechanism directly obtains the relevant information in the identifier. That is, the multiple operating functions of the material tray 11 are realized in one step, which makes it easier for the user to use and improves the efficiency of use.

[0136] 1, the present application provides a 3D printer 10, which in one embodiment can be used to print a three-dimensional model, in other words, the 3D printer 10 can process a printing material and mold the printing material into a specified three-dimensional shape. Note that the printing material can be a powder, liquid, or solid-liquid mixture, such as a photocurable printing material, where a photosensitive resin can be used as the printing material in some embodiments of the present application.

[0137] The 3D printer 10 may include a material tray 11, a molding stage 12, and a light source 13. The molding stage 12 is located on the top side of the material tray 11. The material tray 11 is used to hold a printing material, and the printing material is used to manufacture a three-dimensional article, and the light source 13 is provided on the bottom side of the material tray 11, and light is transmitted to the bottom of the material tray 11, and the light source 13 is used to project a light beam toward the material tray 11, so that a polymerization reaction occurs in the printing material located between the molding stage 12 and the bottom of the material tray 11, and a hardened sheet material is obtained, and the hardened sheet material is bonded to the molding stage 12, and then the molding stage 12 is moved away from the bottom of the material tray 11, and the light source 13 is made to project the light source 13 discontinuously or continuously on the bottom of the material tray 11, so that the hardened sheet material layer by layer is finally formed into a three-dimensional article.

[0138] In addition, the 3D printer in this embodiment may include the structure of the 3D printer in the above embodiment, or may not include the above structure, and is not limited here.

[0139] 33 to 38, in this embodiment, the molding stage 12 includes a stage body 101, a first slide connection portion 104, and a limiting portion 102. The 3D printer 10 further includes a stage connection mechanism 28, which includes a connection seat 103, a stopper member 130, and a connection member 140.

[0140] Here, the first slide connection portion 104 is connected to the stage main body 101, and the limiting portion 102 is provided on the first slide connection portion 104, which is used to slidably connect to the connection seat 103 (the sliding direction of the molding stage 12 is indicated by the arrow in Figure 37), and the limiting portion 102 engages with the connection seat 103 when the stage main body 101 slides to a predetermined position relative to the connection seat 103, and is used to limit the sliding of the molding stage 12 relative to the connection seat 103, thereby achieving fixation to the molding stage 12.

[0141] A second slide connection part 105 is provided on the connection seat 103, and the first slide connection part 104 is used to slidably fit into the second slide connection part 105. The second slide connection part 105 is a slider or a chute. The stopper member 130 is connected to the connection seat 103, and when the stage body 101 slides to a predetermined position relative to the connection seat 103, the stopper member 130 fits into the limiting part 102 and is used to limit the sliding of the stage body 101 relative to the connection seat 103. The connection member 140 is connected to the connection seat 103, and is used to connect to the lifting mechanism 17 and connect the stage connection mechanism 28 and the molding stage 12 to the lifting mechanism 17.

[0142] First, in this embodiment, the molding stage 12 can be manufactured by a one-piece molding method, and second, in this embodiment, the molding stage 12 is described as a non-perforated stage, but in other embodiments, the molding stage 12 may be a perforated stage.

[0143] Referring to Figures 33 to 38, during the molding process, the 3D printer 10 drives the molding stage 12, which is connected to the connection seat 103 by the lifting mechanism 17, to move relative to the material tray 11, thereby adjusting the position of the molding stage 12 relative to the material tray 11 and moving the molding stage 12 into or out of the material tray 11.

[0144] The molding stage 12 is connected using a method in which the molding stage 12 is slidably connected to the connection seat 103, so that the position of the molding stage 12 relative to the connection seat 103 can be easily adjusted, thereby simplifying the steps for attaching and detaching the molding stage 12 to the connection seat 103, and further simplifying the operation of attaching the molding stage 12 to the 3D printer 10.

[0145] In addition, in the process of mounting the molding stage 12, the user only needs to align the molding stage 12 with the stage connection mechanism 28 and then press the molding stage 12. In this process, the first slide connection part 104 slidably fits into the second slide connection part 105. When the molding stage 12 slides to a predetermined position relative to the connection seat 103, the engagement between the limiting part 102 and the connection seat 103 can limit the sliding of the molding stage 12 relative to the connection seat 103. This installation method can quickly perform the lock positioning of the molding stage 12 and quickly complete the mounting step of the molding stage 12. That is, the user can mount and lock the molding stage 12 with just one pushing action. This is the first method in the related art to use a mold stage 12. Compared to a two-step or multi-step operation in which the stage is placed in a predetermined position and then the locking mechanism is used to lock the molding stage by pushing, pulling, etc., this installation method greatly simplifies the user's operational steps, greatly improves the efficiency of mounting the molding stage, and reduces the user's workload. Furthermore, since no complicated operations are required, this installation method can further improve the mounting accuracy of the molding stage 12. Furthermore, during the process in which the lifting mechanism 17 drives the molding stage 12 connected to the connection seat 103 to move relative to the material tray 11, the position of the molding stage 12 relative to the lifting mechanism 17 can be maintained as is, thereby further improving the molding accuracy of the 3D printer 10, reducing the user's workload, and improving the operating efficiency of the 3D printer 10.

[0146] In addition, in this embodiment, during the process in which the lifting mechanism 17 drives the movement of the connecting seat 103 and the molding stage 12, the external force applied by the user to the molding stage 12 to slide the molding stage 12 relative to the connecting seat 103 disappears, and at this time, the restricting action of the stopper member 130 can restrict the sliding of the molding stage 12, which is in a predetermined position, relative to the connection seat 103. As a result, the position of the molding stage 12 relative to the lifting mechanism 17 is maintained as it is, and when it is necessary to remove the molding stage 12 from the connection seat 103, the user can increase the external force applied to the molding stage 12 to eliminate the restricting action of the stopper member 130 and enable the molding stage 12 to slide relative to the connection seat 103, and then remove it from the connection seat 103. Therefore, in this embodiment, the restricting action of the stopper member 130 on the molding stage 12 relative to the connection seat 103 must satisfy the following conditions. 1. Even when the external force from the user disappears, the relative position of the molding stage 12 with respect to the connecting seat 103 can be maintained as is, and 2. When the external force from the user is applied, the molding stage 12 is able to slide relative to the connecting seat 103 by eliminating the restricting effect of the stopper member 130.

[0147] In addition, in this embodiment, when the forming stage 12 is manufactured, in order to reduce the manufacturing cost, the forming stage 12 can be manufactured in the form of injection molding, so that the forming stage 12 is a one-time disposable one that can be discarded after one printing. In this way, the user does not need to maintain the forming stage 12, and after printing, the user can directly discard the forming stage 12 after removing the printed matter, thereby greatly reducing the maintenance cost of the user for the forming stage 12. Specifically, the user can directly separate the product formed on the forming stage 12 from the support structure, or cut the product from the support structure with plastic nippers. In addition, in order to facilitate the transfer and storage of the forming stage 12, the multiple forming stages 12 can be arranged in a stacked manner, that is, the stage body 101 of each forming stage 12 can be arranged on the stage body 101 of the other forming stage 12, so that the space occupied by the multiple forming stages 12 can be reduced in this manner.

[0148] Furthermore, in this embodiment, the forming stage 12 is provided with a first slide connecting part 104, and the connection seat 103 is provided with a second slide connecting part 105, and the first slide connecting part 104 is used to slidably fit into the second slide connecting part 105, thereby realizing the slidable connection between the forming stage 12 and the connection seat 103. Here, there are various structures for realizing the slidable fit between the first slide connecting part 104 and the second slide connecting part 105, and in this embodiment, one of the first slide connecting part 104 and the second slide connecting part 105 is a chute, and the other is a slider. In addition, in order to realize a slidable connection between the molding stage 12 and the connection seat 103, the first slide connection part 104 and the second slide connection part 105 have various installation forms. As shown in FIG. 34, the first slide connection part 104 is located inside the second slide connection part 105, and as shown in FIG. 35, the second slide connection part 105 is located inside the first slide connection part 104. Specifically, a corresponding installation method can be selected according to actual circumstances, and is not limited here.

[0149] In the process of the molding stage 12 sliding relative to the connection seat 103, in order to position the molding stage 12 when the molding stage 12 slides to a predetermined position, a first positioning portion 112 is provided on a surface of the first slide connection portion 104 that comes into contact with the second slide connection portion 105, and a second positioning portion 123 is provided on a surface of the second slide connection portion 105 that comes into contact with the first slide connection portion 104, and the first positioning portion 112 is used to fit into the second positioning portion 123 when the molding stage 12 slides to a predetermined position relative to the connection seat 103. Specifically, one of the first positioning portion 112 and the second positioning portion 123 is a positioning protrusion, and the other is a positioning groove. That is, in this embodiment, positioning relative to the molding stage 12 can be achieved by adopting a system in which a positioning protrusion is provided on the surface of the first slide connection part 104 for contacting the second slide connection part 105, and a positioning groove is provided on the surface of the second slide connection part 105 for contacting the first slide connection part 104, or positioning relative to the molding stage 12 can be achieved by adopting a system in which a positioning groove is provided on the surface of the first slide connection part 104 for contacting the second slide connection part 105, and a positioning protrusion is provided on the surface of the second slide connection part 105 for contacting the first slide connection part 104.

[0150] When the molding stage 12 slides to a predetermined position, the first positioning portion 112 and the second positioning portion 123 fit together, and in order to avoid a situation in which the first positioning portion 112 and the second positioning portion 123 are clogged at this time, a first arc-shaped transition surface is provided on both ends of the positioning protrusion and positioning groove, i.e., both ends of the first positioning portion 112 and the second positioning portion 123, in the direction in which the molding stage 12 slides relative to the connecting seat 103. That is, by the action of an external force from the user, the molding stage 12 can slide relative to the connecting seat 103 by releasing the restricting action of the stopper member 130 and the engaging force between the first positioning portion 112 and the second positioning portion 123, and thereby be taken out.

[0151] 33 to 39, FIG. 36 shows the structure of an elastic member in an embodiment of the present application, in which the stopper member 130 may include a stopper block 131 movably connected to the connection seat 103, and the limiting portion 102 is the stopper groove 113. The stopper block 131 is used to fit into the stopper groove 113 when the forming stage 12 slides to a predetermined position relative to the connection seat 103. That is, by adjusting the position of the stopper block 131 relative to the connection seat 103, the stopper block 131 can be fitted into the stopper groove 113 when the forming stage 12 slides to a predetermined position relative to the connection seat 103, and can be disengaged from the stopper groove 113 when the forming stage 12 slides to the predetermined position relative to the connection seat 103.

[0152] In order to maintain the fitted state between the stopper block 131 and the stopper groove 113 and improve the stability of use of the stage connection mechanism 28, the stopper member 130 further includes an elastic force member 132 connected to the connection seat 103, and the elastic force member 132 is connected to the stopper member 131 and is used to give the stopper block 131 a tendency to move toward the molding stage 12, thereby maintaining the fitted state between the stopper block 131 and the stopper groove 113.

[0153] When the forming stage 12 slides to a predetermined position, the stopper block 131 fits into the stopper groove 113, and in order to avoid a situation in which the stopper block 131 and the stopper groove 113 are clogged at this time, second arc-shaped transition surfaces are provided on both ends of the stopper block 131 and the stopper groove 113, i.e., on both ends of the stopper member 130 and the limiting portion 102, in the direction in which the forming stage 12 slides relative to the connecting seat 103. That is, by the action of an external force from the user, the forming stage 12 can slide relative to the connecting seat 103 by releasing the engagement force between the stopper block 131 and the stopper groove 113 and the engagement force between the first positioning portion 112 and the second positioning portion 123, and thereby be taken out.

[0154] Furthermore, with this method, the user can, with just one step operation, for example by pulling, release the positioning protrusion from the restriction imposed by the positioning groove as the first arc-shaped transition surface transitions, release the stopper block 131 from the restriction imposed by the stopper groove 113 as the second arc-shaped transition surface transitions, and further release the forming stage 12 from the stage connecting mechanism 28. Compared to the method in the related art in which the lock on the forming stage is first released and then the forming stage is removed, this simplifies the user's operation steps, significantly improves the efficiency of removing the forming stage, and reduces the workload of the user.

[0155] In one embodiment, the limiting portion 102 may include a movable block movably connected to the stage body 101. The movable block can abut against the connecting seat 103 when the forming stage 12 slides to a predetermined position relative to the connecting seat 103, thereby realizing positioning and locking of the forming stage 12.

[0156] 33 to 40, Fig. 40 shows the structure of an elastic member in another embodiment, in which the stopper member 130 may include an elastic sheet 133 connected to the connecting seat 103, the limiting portion 102 is the stopper groove 113, and the elastic sheet 133 has a shape that fits the stopper groove 113, so that it can be fitted into the stopper groove 113 when the forming stage 12 slides to a predetermined position relative to the connecting seat 103. That is, when the forming stage 12 slides to a predetermined position relative to the connecting seat 103, the elastic sheet 133 engages with the stopper groove 113 by the action of its own elastic force, and when the forming stage 12 releases the elastic force of the elastic sheet 133 by the action of an external force from the user and elastically deforms the elastic sheet 133, the elastic sheet 133 is released from the stopper groove 113, and the forming stage 12 can be removed.

[0157] 33 to 41, FIG. 41 shows the structure of the elastic member in another embodiment, in which the stopper member 130 may include a first magnetic member 134, and the limiting portion 102 may include a second magnetic member 135 and a third magnetic member 136. The first magnetic member 134 is connected to the connecting seat 103, and the second magnetic member 135 and the third magnetic member 136 are sequentially connected to the stage body 101 in the direction in which the molding stage 12 slides relative to the connecting seat 103. When the molding stage 12 slides to a position spaced apart from a predetermined position relative to the connecting seat 103, the first magnetic member 134 repels the second magnetic member 135, and when the molding stage 12 slides to a predetermined position relative to the connecting seat 103, the first magnetic member 134 attracts the third magnetic member 136. The purpose of this installation method is to restrict the sliding of the forming stage 12, which is in a predetermined position, relative to the connecting seat 103 by the magnetic force between the first magnetic member 134 and the third magnetic member 136, and to inform the user that the forming stage 12 has not reached the predetermined position by the magnetic force between the first magnetic member 134 and the second magnetic member 135 when the forming stage 12 slides out of the predetermined position. Note that the first magnetic member 134 may be a permanent magnet or an electromagnet. If it is an electromagnet, a sensor (or a stroke switch) may be further provided on the connecting seat 103 to detect position information of the forming stage 12, so that when the forming stage 12 reaches the predetermined position, the electromagnet is energized, facilitating automatic control of the 3D printer 10.

[0158] 33 to 41, in this embodiment, the molding stage 12 is further provided with an identifier, where the identifier includes, but is not limited to, a matrix code (two-dimensional code), a barcode, a character, a chip, an NFC and an RFID electronic tag, etc. The identifier can be used to transmit or store various production information, such as the printing material used for the 3D printed object, the production time, the user to which it belongs and the associated printer, etc. It can also be used to transmit other production information, such as the process parameters of the cleaning machine, the process parameters of the curing machine, and printing parameters including the slice file of the printed object, the printer control parameters, etc., that match the 3D printed object.

[0159] Before printing, printing parameters can be registered in advance in the identifier of the molding stage 12, and after the user mounts the molding stage 12 on the stage connection mechanism 28 of the 3D printer 10, the reader in the 3D printer 10 can read the information related to the identifier and obtain the printing parameters, and the 3D printer 10 automatically starts a printing operation based on the printing parameters. In this way, the user does not need to perform extra manual operations on the 3D printer 10.

[0160] In this embodiment, in order to facilitate the installation of the first positioning portion 112, the second positioning portion 123 and the stopper member 130, the first slide connecting portion 104 may be a protruding edge protruding from the forming stage 12, the second slide connecting portion 105 is a chute, and the protruding edge is used to fit into the chute. In addition, in order to improve the sliding stability of the forming stage 12, a protruding edge is provided on both sides of the forming stage 12 in the width direction of the forming stage 12, and a chute is provided on both sides of the connecting seat 103. When providing the first positioning portion 112, the second positioning portion 123 and the stopper member 130, the first positioning portion 112, the second positioning portion 123 and the stopper member 130 may be provided on one side of the forming stage 12 in the width direction of the forming stage 12, or the first positioning portion 112, the second positioning portion 123 and the stopper member 130 may be provided on each side of the forming stage 12.

[0161] 1, the present application provides a 3D printer 10, which in one embodiment can be used to print a three-dimensional model, in other words, the 3D printer 10 can process a printing material and mold the printing material into a specified three-dimensional shape. Note that the printing material can be a powder, liquid, or solid-liquid mixture, such as a photocurable printing material, where a photosensitive resin can be used as the printing material in some embodiments of the present application.

[0162] The 3D printer 10 may include a material tray 11, a molding stage 12, and a light source 13. The molding stage 12 is located on the top side of the material tray 11. The material tray 11 is used to hold a printing material, and the printing material is used to manufacture a three-dimensional article, and the light source 13 is provided on the bottom side of the material tray 11, and light is transmitted to the bottom of the material tray 11, and the light source 13 is used to project a light beam toward the material tray 11, so that a polymerization reaction occurs in the printing material located between the molding stage 12 and the bottom of the material tray 11, and a hardened sheet material is obtained, and the hardened sheet material is bonded to the molding stage 12, and then the molding stage 12 is moved away from the bottom of the material tray 11, and the light source 13 is made to project the light source 13 discontinuously or continuously on the bottom of the material tray 11, so that the hardened sheet material layer by layer is finally formed into a three-dimensional article.

[0163] In addition, the 3D printer in this embodiment may include the structure of the 3D printer in the above embodiment, or may not include the above structure, and is not limited here.

[0164] In this embodiment, the molding stage 12 has a molding surface 125, which is used to bond the 3D printed object formed by exposing and curing the photocurable material. In some embodiments, the molding stage is made of a modified plastic material, and the adhesive force between the molding surface and the printing layer formed by exposing and curing the printing material can be significantly improved by optimizing and modifying the plastic material, and the adhesive force can meet 1.5N or more per square centimeter compared to the molding stage injection molded with unmodified plastic, and the adhesive force of the molding stage injection molded with unmodified plastic is generally less than 1.5N. Furthermore, according to the data measured by optimizing and modifying the plastic material according to the solution of the present application, the adhesive force between the molding surface and the printing layer formed by exposing and curing the photocurable material can actually reach 3N or more per square centimeter, and even 4N, 5N, 6N or 7N or more. This can effectively improve the adhesive force between the molding surface and the initial printing layer of the printed object, reduce the probability of plate dropout, and improve the printing success rate.

[0165] Here, the substrate of the molding stage may be at least one of modified ABS, PC, PP, POM, PA, PS, PBT, AS, PET, PVC, PEEK, PPSU, SAN, PE, TPE, PTFE, PES and PVA. The modification treatment includes at least one of graft modification, blend modification, inorganic reinforcement modification (modification by particles / fibers), morphological structure control modification and crosslinking modification.

[0166] In some embodiments, the molded stage is made of a modified ABS material, which in weight percent comprises 70-80 wt% ABS resin, 5-20 wt% methacrylic resin, 5-10 wt% reinforcing fiber, and 1-5 wt% coupling agent.

[0167] Furthermore, the molding stage is made by injection molding modified ABS resin, which is made from raw materials such as ABS resin, methacrylic resin (PMMA resin), reinforcing fibers, and a coupling agent, and this improves the adhesive strength between the printed material and the molding surface of the molding stage, further reducing plate dropout and improving the printing success rate.

[0168] Specifically, the mass fraction of the ABS resin may be 70%, 72%, 74%, 76%, 78%, 80%, etc., the mass fraction of the methacrylic resin may be 5%, 10%, 15%, 20%, etc., the mass fraction of the reinforcing fiber may be 5%, 6%, 7%, 8%, 9%, 10%, etc., and the mass fraction of the coupling agent may be 1%, 2%, 3%, 4%, 5%, etc.

[0169] Here, the ABS resin used as the basic material of the modified ABS material has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical performance. The blend of PMMA resin can improve the heat resistance and processing fluidity of ABS plastic, while the compatibility of PMMA with the polyurethane acrylate in the printing material is high, and the adhesion of the molding stage to the printed matter can be effectively improved. In addition, since ABS is relatively soft, the reinforcing fiber can strengthen its strength, thereby increasing the flatness (0.1-0.15) of the molding surface, strengthening the surface roughness, and increasing the adhesive force. The blend of reinforcing fiber can effectively improve the rigidity and heat resistance of ABS plastic and reduce the material shrinkage rate. The relatively small shrinkage rate can guarantee the dimensional accuracy and flatness of the molding stage obtained by injection molding, and the relatively high rigidity can reduce the deformation of the molding stage during the peeling process, thereby improving the success rate of printing. In addition, the coupling agent can effectively improve the compatibility of ABS with PMMA resin and glass fiber, improving the non-defective rate and mixing uniformity of the injection molding product, and avoiding aggregation and sedimentation.

[0170] In some embodiments, the raw material contains 73-78 wt% ABS resin, 10-15 wt% methacrylic resin, 6-9 wt% reinforcing fiber, and 2-4 wt% coupling agent. Optimizing the amount of each component used is advantageous in further improving the adhesive strength of the molding surface of the molding stage obtained by injection molding the modified ABS resin to the printed matter.

[0171] Here, the methacrylic resin is selected from at least one of methyl methacrylate, polymethyl methacrylate (PMMA), methacrylic polyurethane, and n-butyl methacrylate. The reinforcing fiber is selected from at least one of glass fiber, ceramic fiber, silica fiber, and boron fiber. All of the above reinforcing fibers can effectively improve the rigidity and heat resistance of ABS plastic, and further reduce the material shrinkage rate. The coupling agent is selected from at least one of silane-based monomers, styrene-based monomers, and titanate-based monomers, and can be a common coupling agent. Examples include, but are not limited to, vinyltrimethoxysilane (VTMS), vinyltriethoxysilane (VTES), 3-methacryloxypropyltrimethoxysilane (VMMS), γ-aminopropyltriethoxysilane (KH-550), γ-(methacryloxy)propyltrimethoxysilane (KH-570), etc.

[0172] In addition, the modified ABS material of the above embodiment can be manufactured by mixing ABS resin, PMMA resin, reinforcing fiber and coupling agent as raw materials in a ratio based on the composition of the modified ABS material, and molding it using a general plastic molding device and method. For example, blending and extrusion are performed using a single screw extruder, and the extruded product is cut into an appropriate size and used for subsequent injection molding as a molding stage.

[0173] 1, the present application provides a 3D printer 10, which in one embodiment can be used to print a three-dimensional model, in other words, the 3D printer 10 can process a printing material and mold the printing material into a specified three-dimensional shape. Note that the printing material can be a powder, liquid, or solid-liquid mixture, such as a photocurable printing material, where a photosensitive resin can be used as the printing material in some embodiments of the present application.

[0174] The 3D printer 10 may include a material tray 11, a molding stage 12, and a light source 13. The molding stage 12 is located on the top side of the material tray 11. The material tray 11 is used to hold a printing material, and the printing material is used to manufacture a three-dimensional article, and the light source 13 is provided on the bottom side of the material tray 11, and light is transmitted to the bottom of the material tray 11, and the light source 13 is used to project a light beam toward the material tray 11, so that a polymerization reaction occurs in the printing material located between the molding stage 12 and the bottom of the material tray 11, and a hardened sheet material is obtained, and the hardened sheet material is bonded to the molding stage 12, and then the molding stage 12 is moved away from the bottom of the material tray 11, and the light source 13 is made to project the light source 13 discontinuously or continuously on the bottom of the material tray 11, so that the hardened sheet material layer by layer is finally formed into a three-dimensional article.

[0175] In addition, the 3D printer in this embodiment may include the structure of the 3D printer in the above embodiment, or may not include the above structure, and is not limited here.

[0176] Furthermore, in this embodiment, when the molding stage is produced, the substrate of the molding stage (particularly the side of the substrate that will become the molding surface) can be surface-treated, thereby obtaining a molding stage having a surface-treated molding surface. In this manner, the adhesive strength between the molding surface and the printed matter can be improved, and the occurrence of the plate-drop phenomenon can be significantly reduced.

[0177] The substrate in this embodiment may be a substrate generally used for a molding stage, or may be the modified plastic material in the above embodiment.

[0178] Here, the surface treatment method is not limited, and may include at least one of spray painting, sandblasting, matt, engraving, electroplating, plating, printing, embossing, polishing, painting, oiling, ion plating, laser treatment, texturing, electric discharge machining, oil spray, silk printing, laser engraving, water transfer, embossing, mechanical engraving, film bonding, chemical etching, and hairline finishing.

[0179] In some embodiments, referring to FIG. 61, the surface treatment method is spray coating, and the raw materials used in the spray coating include, by mass, 100 parts of photocurable resin, 80-150 parts of diluent and 0.05-2 parts of initiator, wherein the photocurable resin is selected from at least one of acrylate, allyl ether and vinyl ether, and has a number average molecular weight of 4000-10W.

[0180] Specifically, the structural formula of the acrylate-based photocurable resin is: [C1] TIFF2025502864000002.tif35170, and the structural formula of the allyl ether-based photocurable resin is: [C2] TIFF2025502864000003.tif25170, and the structural formula of the vinyl ether photocurable resin is: [C3] The file is TIFF2025502864000004.tif23170.

[0181] Here, the acrylate in the printing material may be a (meth)acrylate, the structural formula of which is [C4] The file is TIFF2025502864000005.tif32170.

[0182] In the 3D printing process, the double bonds in the modified coating can undergo a cross-linking and hardening integration reaction with the (meth)acrylate double bonds in the printing material, making the original coating layer and the initial hardened layer of the printed material fuse together, resulting in stronger adhesion and less chance of plate breakage. Here, the reaction principle between the double bonds in the modified coating and the (meth)acrylate double bonds in the printing material is as follows: TIFF2025502864000006.tif73170

[0183] In addition, by controlling the molecular weight of the photocurable resin, the coating material can be easily dried on the surface, which facilitates preservation of the molding stage.

[0184] Specifically, when the amount of photocurable resin used is 100 parts, the amount of diluent used may be 80 parts, 100 parts, 120 parts, 140 parts, 150 parts, etc., and the amount of initiator used may be 0.05 parts, 0.1 parts, 0.5 parts, 1.0 parts, 1.5 parts, 2.0 parts, etc.

[0185] In some embodiments, the coating may include, by weight, 100 parts of photocurable resin, 100-130 parts of diluent, and 0.2-0.5 parts of initiator. By optimizing the amount of each component in the coating, the surface drying speed can be further increased and the adhesion of the coating layer to the printed matter can be improved.

[0186] In some embodiments, the photocurable resin comprises 50-90 parts of a first resin and 10-50 parts of a second resin, the first resin having a number average molecular weight of 4,000-20,000, and the second resin having a number average molecular weight of 4W-10W. By combining a polymer resin with a small molecule resin, the leveling can be effectively controlled and wrinkle problems can be prevented during spray coating.

[0187] Furthermore, the first resin is selected from at least one of RA3081, RA3083, RA3091, 6071, 6175-3 and SD7508, and the second resin is selected from at least one of SD1000 and SWA20.

[0188] In some embodiments, the diluent is selected from at least one of water and an organic solvent. Using water as the solvent is more environmentally friendly, but the drying temperature is high and the energy consumption is large when using water as the solvent. From this point of view, it is preferable to use an organic solvent, which may be at least one of ethyl acetate, butyl acetate, and propylene glycol methyl ether acetate. Considering the toxicity of the solvent, it is preferable to use a solvent that is relatively less toxic and easier to dry on the surface, which may be a mixed solvent formed of ethyl acetate, butyl acetate, and propylene glycol methyl ether acetate.

[0189] In some embodiments, the initiator is selected from at least one of TPO, 819, and TPO-L, and the initiator can be a common photocuring initiator, but is not limited to these several.

[0190] In some embodiments, the composition further comprises 0.05 to 1 part of an auxiliary, for example, 0.05 parts, 0.1 parts, 0.2 parts, 0.4 parts, 0.6 parts, 0.8 parts, 1.0 parts, etc. The addition of the auxiliary can further increase the speed of surface drying. The type of auxiliary includes, but is not limited to, at least one of CAB 551-0.01, CAB 551-0.2, CAB 381-0.1, and CAB 381-0.5 (all of the above auxiliary agents are cellulose acetate butyrate).

[0191] Furthermore, the thickness of the dry film formed by the paint on the molding stage may be 20 μm to 30 μm, for example, 20 μm, 25 μm, 30 μm, and the like.

[0192] In addition, 3D printing is performed using the molding stage 12, and during the printing process, photo-curing is performed using ultraviolet light, and the molding stage and the printing material are firmly bonded together, as shown in Figure 1.

[0193] In some embodiments, the surface treatment is sandblasting, and the roughness Ra of the molding surface of the molding stage obtained after sandblasting is 0.1 μm to 5 μm, such as 0.1 μm, 1.0 μm, 2.0 μm, 3.0 μm, 4.0 μm, 5.0 μm, etc.

[0194] Here, the abrasive material used in sandblasting is hard sand material with corners, for example, at least one of white alundum, brown alundum, glass beads, and steel grit.

[0195] In one embodiment, referring to Figures 62 to 65, the molding stage 12 is a perforated stage, and a plurality of through holes 124 penetrate the molding surface and the back surface 126 opposite the molding surface, the perforations facilitate ventilation of the molding stage 12 during the 3D printing process, and the perforated parts can provide a reverse pressure after the printing material is hardened, further improving the adhesion between the printed matter and the molding stage 12.

[0196] In some embodiments, the diameter of the through holes 124 gradually increases from the molding surface 125 to the rear surface 126, and a plurality of the through holes 124 are arranged to intersect. By designing the hole diameter of the molding stage 12 so that it is smaller on the molding surface 125 side and larger on the rear surface 126 side, i.e., in an inverted truncated cone shape, it is possible to increase the reverse force applied to the printed material, improve the adhesive strength between the printed material and the molding stage 12, further reduce the probability of plate removal, and improve the printing success rate.

[0197] 1, the present application provides a 3D printer 10, which in one embodiment can be used to print a three-dimensional model, in other words, the 3D printer 10 can process a printing material and mold the printing material into a specified three-dimensional shape. Note that the printing material can be a powder, liquid, or solid-liquid mixture, such as a photocurable printing material, where a photosensitive resin can be used as the printing material in some embodiments of the present application.

[0198] The 3D printer 10 may include a material tray 11, a molding stage 12, and a light source 13. The molding stage 12 is located on the top side of the material tray 11. The material tray 11 is used to hold a printing material, and the printing material is used to manufacture a three-dimensional article, and the light source 13 is provided on the bottom side of the material tray 11, and light is transmitted to the bottom of the material tray 11, and the light source 13 is used to project a light beam toward the material tray 11, so that a polymerization reaction occurs in the printing material located between the molding stage 12 and the bottom of the material tray 11, and a hardened sheet material is obtained, and the hardened sheet material is bonded to the molding stage 12, and then the molding stage 12 is moved away from the bottom of the material tray 11, and the light source 13 is made to project the light source 13 discontinuously or continuously on the bottom of the material tray 11, so that the hardened sheet material layer by layer is finally formed into a three-dimensional article.

[0199] In addition, the 3D printer in this embodiment may include the structure of the 3D printer in the above embodiment, or may not include the above structure, and is not limited here.

[0200] In the field of 3D printing, printing materials have certain requirements for the printing environment, for example, in some cases it is necessary to avoid light irradiation from non-working light sources, or it requires appropriate temperature and humidity. In addition, the printing bin of a 3D printer should avoid the intrusion of foreign matter (for example, dust) as much as possible so as not to affect the printing quality. In addition, it is required that the light source does not irradiate the user during printing, and work such as dustproofing and waterproofing must be performed on the light source, so that it is necessary to improve the sealing of the printer. Since the structural installation of a conventional 3D printer is not reasonable, the sealing of the 3D printer is not high. For example, a light-curing printer in the related art needs to remove or open the case when attaching or detaching the material tray or molding stage, which causes excessive gas to flow between the printing bin and the external environment. This makes it easy to damage the storage of printing materials in the printing bin and the environment suitable for printing work, and makes it easy for foreign matter such as dust to enter the printing bin. Therefore, the sealing of the conventional light-curing printer is poor, which will undoubtedly affect the printing quality.

[0201] In order to improve the problem of poor sealing ability of 3D printers in related technologies, the 3D printer in this embodiment has an opening in the case and seals the window using an automatically closing light-activated door or the molding stage 12 and the material tray 11 themselves, which can effectively reduce gas exchange inside and outside the printing bottle, improve the sealing ability of the printer, and thereby ensure printing quality.

[0202] 42 and 43, in one embodiment, the 3D printer 10 includes a case 29, the interior of which is divided into a printing bin 296 and an electric bin 299 by a frame 15, the molding stage 12 and the material tray 11 are provided in the printing bin 296, and the light source 13 is provided in the electric bin 299. A light passage 291 is provided in the frame 15, and the light beam of the light source 13 can be irradiated to the printing bin 296 through the light passage 291, and the light is transmitted to the bottom of the material tray 11, so that when the bottom of the material tray 11 covers the light passage 291, the light beam of the light source 13 can be irradiated to the printing material in the material tray 11.

[0203] In one embodiment, the case 29 is provided with at least one window 297 for inserting and removing the forming stage 12 and the material tray 11, and the case 29 is provided with a closing door 298, which can automatically close the window 297. The window 297 communicates the inside and outside of the printing bin 296, and the window 297 can insert and remove the material tray 11, and can also insert and remove the forming stage 12, or the material tray 11 and the forming stage 12 can be inserted and removed through one window 297. Specifically, the case 29 is provided with two windows 297, which are spaced apart in the vertical direction and are used for inserting and removing the material tray 11 and the forming stage 12, respectively. In another optional embodiment, the material tray 11 and the forming stage 12 may be provided so as to be connected together, for example the forming stage 12 seals the material tray 11, the printing material is stored and protected in a sealed environment, and the material tray 11 and the forming stage 12 are separated by a mechanism inside the case 29 (e.g. an opening mechanism) when printing is to be performed.

[0204] In this embodiment, the closing door 298 realizes the opening and closing of the window 297 by electrical driving. Specifically, the 3D printer 10 includes a driving mechanism (not shown) and a first detection mechanism (not shown), the driving mechanism is power-connected to the closing door 298, the first detection mechanism is used to detect whether the molding stage 12 and the material tray 11 are inserted into or removed from the printing bin 296, and the driving mechanism is used to drive the closing door 298 to close the window 297 when the molding stage 12 and the material tray 11 are inserted or removed. In this embodiment, after the molding stage 12 and the material tray 11 are inserted or removed, the driving mechanism drives the closing door 298 to close the window 297, so that the gas exchange between the inside and outside of the printing bin 296 can be timely blocked, preventing external dust from entering the printing bin 296, and maintaining environmental parameters such as temperature and humidity inside the printing bin 296 at a preferred level. Preferably, after the material tray 11 or the molding stage 12 leaves the inside of the case 29, the closing door 298 can automatically close the window 297, and after the material tray 11 or the molding stage 12 enters the inside of the case 29, the closing door 298 can also automatically close. In this way, the relative sealing of the 3D printer can be ensured during the operation process of putting the material tray 11 or the molding stage 12 into and out of the case 29.

[0205] Specifically, the first detection mechanism may be a photoelectric sensor, which detects whether there is an object blocking the optical path in the window 297, thereby judging whether the molding stage 12 and the material tray 11 have already been inserted or removed. For example, in the process of mounting or removing the molding stage 12 and the material tray 11, the first detection mechanism detects that the optical path is blocked, and thus can determine that the molding stage 12 and the material tray 11 have not yet been mounted or removed, and after the optical path of the first detection mechanism changes from blocked to unblocked and a predetermined time has elapsed, it can be determined that the molding stage 12 and the material tray 11 have already been mounted or removed. The driving mechanism may be a stepping motor.

[0206] In another optional embodiment, the driving mechanism may be provided to drive the closing door 298 to open the window 297 when the opening condition is met. For example, the closing door 298 is automatically opened just before the molding stage 12 and the material tray 11 are loaded into the print bin 296. In a specific embodiment, the 3D printer 10 may further include a second detection mechanism, which is used to detect whether the molding stage 12 and the material tray 11 approach the closing door 298, and the opening condition is that the second detection mechanism detects that the molding stage 12 and the material tray 11 approach the closing door 298. In other words, if the second detection mechanism detects that the molding table 12 and the material tray 11 approach the closing door 298, it means that the molding table 12 and the material tray 11 need to pass through the window 297, and therefore it is determined that the opening condition is met, and the driving mechanism drives the closing door 298 to open the window 297, and allows the molding stage 12 and the material tray 11 to pass through. In this embodiment, the approach of the forming stage 12 and the material tray 11 to the closing door 298 means that the distance between the forming stage 12 and the material tray 11 and the closing door 298 in the direction of the window 297 is smaller than a predetermined distance. In this case, the second detection mechanism may include at least one of sensors capable of detecting whether an object approaches, such as a photoelectric sensor or an ultrasonic distance measuring sensor, and these sensors can emit a corresponding electric signal when the distance between the forming stage 12 and the material tray 11 and the closing door 298 is smaller than a predetermined distance.

[0207] In another optional embodiment, the opening condition may be that the second detection mechanism identifies the forming stage 12 and the material tray 11 as a valid forming stage 12 and material tray 11. For example, the second detection mechanism includes a reader, and the forming stage 12 and the material tray 11 are provided with identifiers, and the opening condition is that the second detection mechanism identifies the identifiers in the forming stage 12 and the material tray 11 as valid identifiers. The identifiers include, but are not limited to, matrix codes (two-dimensional codes), bar codes, characters, chips, NFC, RFID electronic tags, etc. In this way, the window 297 only allows the forming stage 12 and the material tray 11 to pass through, and the closing door 298 does not open the window 297 due to the trigger of other external objects. In the present embodiment, the second detection mechanism may be provided near the window 297 on the outside of the case 29 so that the closing door 298 can be automatically opened when the user attempts to load the forming stage 12 and material tray 11 through the window 297, the second detection mechanism may be provided near the window 297 on the inside of the case 29 so that the closing door 298 can be automatically opened when the forming stage 12 and material tray 11 are output, or the second detection mechanism is provided both inside and outside the case 29. In an optional embodiment, the opening condition may include the forming stage 12 and material tray 11 approaching the closing door 298 and the second detection mechanism simultaneously identifying the identifiers on the forming stage 12 and material tray 11 as valid identifiers.

[0208] In the 3D printer 10 of the embodiment of the present application, the window 297 on the case 29 allows the molding stage 12 and the material tray 11 to pass through, realizing the insertion and removal of the molding stage 12 and the material tray 11. Compared with the method of opening and removing the case 29 in the related art, the gas exchange between the inside and outside of the printing bin 296 can be reduced, and the inside of the printing bin 296 can be kept in an environment suitable for placing printing materials or printing. The closing door 298 can automatically close the window 297, or the molding stage 12 and the material tray 11 can seal the window 297, reducing the gas exchange between the inside and outside of the printing bin 296 and preventing external dust from entering the printing bin 296 and affecting the printing effect. In addition, the environmental adjustment device 30 can adjust the air pressure of the printing bin 296 to be slightly higher than the air pressure of the external environment, in this case, even if the window 297 is opened, it is difficult for external foreign matter to enter the printing bin 296 and affect the environment of the printing bin 296. In the embodiment of the present application, the shielding member 293 can shield the light path after the material tray 11 is removed, thus avoiding the user from being invaded by the light beam of the light source 13 .

[0209] 1, the present application provides a 3D printer 10, which in one embodiment can be used to print a three-dimensional model, in other words, the 3D printer 10 can process a printing material and mold the printing material into a specified three-dimensional shape. Note that the printing material can be a powder, liquid, or solid-liquid mixture, such as a photocurable printing material, where a photosensitive resin can be used as the printing material in some embodiments of the present application.

[0210] The 3D printer 10 may include a material tray 11, a molding stage 12, and a light source 13. The molding stage 12 is located on the top side of the material tray 11. The material tray 11 is used to hold a printing material, and the printing material is used to manufacture a three-dimensional article, and the light source 13 is provided on the bottom side of the material tray 11, and light is transmitted to the bottom of the material tray 11, and the light source 13 is used to project a light beam toward the material tray 11, so that a polymerization reaction occurs in the printing material located between the molding stage 12 and the bottom of the material tray 11, and a hardened sheet material is obtained, and the hardened sheet material is bonded to the molding stage 12, and then the molding stage 12 is moved away from the bottom of the material tray 11, and the light source 13 is made to project the light source 13 discontinuously or continuously on the bottom of the material tray 11, so that the hardened sheet material layer by layer is finally formed into a three-dimensional article.

[0211] In addition, the 3D printer in this embodiment may include the structure of the 3D printer in the above embodiment, or may not include the above structure, and is not limited here.

[0212] The material tray 11 for 3D printing is essentially an optical component, and it is preferable to keep the bottom of the material tray 11 clean before use to avoid fine particles such as dust affecting the printing quality. If the resin is pre-placed in the material tray 11, it is not desired that environmental factors such as external light, temperature, and humidity other than the printer light source affect the properties of the printing material. After the material tray 11 is used, it is possible that the material tray 11 contains unused resin, and these resins need to be properly stored.

[0213] Referring to FIG. 44, in this embodiment, the material tray 11 includes a cover 415 and a tray body 411, and the cover 415 is provided with a second fitting member 417. The tray body 411 is a tub-shaped structure having a notch, and the tray body 411 is provided with a first fitting member 422 that fits with the second fitting member 417. The cover 415 has a closed position that covers the notch of the tray body 411 to seal the tray body 411, and an open position that opens the notch of the tray body 411. When the cover 415 is in the closed position, the second fitting member 417 and the first fitting member 422 fit together to lock the cover 415 and the tray body 411 and hold the closed position. Furthermore, the material tray 11 may further include an elastic support member 423, which is provided between the cover 415 and the tray body 411 and is used to provide an elastic force that holds the cover 415 in the open position.

[0214] Specifically, the elastic support member 423 of the material tray 11 can hold the cover 415 and the tray body 411 open by elastic force, and the second fitting member 417 and the first fitting member 422 can be fitted together to lock the cover 415 and the tray body 411 to hold the closed position. That is, the second fitting member 417, the first fitting member 422 and the elastic support member 423 cooperate to ensure that the material tray 11 can be kept in the open position to realize the task of loading and unloading, or in the closed position to realize the task of resin sealing. Compared with the need to manually close and open the cover 415 in the related art, such a material tray 11 can significantly reduce the amount of work for the operator by the elastic force of the elastic support member 423 and the fitting of the second fitting member 417 and the first fitting member 422, and has the characteristics of saving time and labor and being easy to operate.

[0215] In this embodiment, when the cover 415 is in the closed position, the second fitting member 417 and the first fitting member 422 are fitted together. Note that in other embodiments, when the cover 415 is in the closed position, the second fitting member 417 and the first fitting member 422 may be engaged with each other, magnetically attracted, screwed together, etc., if they are fitted together to lock the cover 415 and the tray body 411, and this is merely an example and is not limiting.

[0216] As can be seen from the figure, both the second engaging member 417 and the first engaging member 422 have inclined surfaces, and when the cover body 415 moves from the open position to the closed position, the inclined surface of the second engaging member 417 abuts against the inclined surface of the first engaging member 422 and smoothly engages with the first engaging member 422.

[0217] Furthermore, the cover 415 is rotatably mounted on one end of the tray body 411 to open and close the notch of the tray body 411. The rotary connection has the characteristics of simple structure and easy processing, and facilitates opening and closing of the cover 415 when maximizing the opening of the tray body 411. In other embodiments, as long as the cover 415 can be easily opened, the cover 415 and the tray body 411 may be connected by a screw, slidably connected, etc., and the above is merely an example and is not limiting.

[0218] In summary, the material tray 11 and 3D printer 10 provided in the embodiments of the present application have at least the following advantages: The material tray 11 of the present solution can realize automatic opening of the lid and automatic opening of the lid body 415. Such a way of opening the lid body 415 significantly reduces the labor consumption of the operator, saves time and labor, and is easy to operate, which is favorable for improving the work efficiency and increasing the amount of work per unit time, and thus has significant economic benefits; The 3D printer 10 of the present solution is flexible to operate, has a high degree of automation, can adapt to faster production, is easy to use, saves time and labor, and has outstanding progress.

[0219] Referring to FIG. 45, the present application further provides a 3D printing method, which can be applied to, but is not limited to, the 3D printer in the above embodiments.

[0220] In one embodiment, the 3D printing method is used to improve technical problems in the related art, such as difficulty in replenishing printing materials. Specifically, as can be seen from Fig. 46, the 3D printing method is performed by the control module 19 controlling the driving device 20. Here, the driving device 20 is configured to be transmission-fitted with the transmission assembly 200 in the above embodiment, so that the driving device 20 is easy to drive the rotation of the conveying member 120 when operating. The control module 19 is electrically connected to the driving device 20, and drives the driving device 20 to adjust the rotation speed or adjust the rotation direction.

[0221] In addition, the control module 19 can receive a control command sent from a user and control the driving device 20 to adjust the rotation speed or the rotation direction. Here, the control command includes a supply command and a stirring command. The control module 19 can control the material supply mechanism 14 to supply the printing material into the material tray 11 based on the supply command, and can control the material supply mechanism 14 to stir the printing material in the material storage chamber 111 based on the stirring command.

[0222] Specifically, the 3D printing method may include the following steps S10 to S40.

[0223] In step S10, a supply command is received.

[0224] A user can issue a supply command via a smart terminal, a remote control, etc. Alternatively, the user can issue a supply command by pressing or touching a control button provided on the 3D printer 10. Alternatively, the supply command can be triggered when the amount of printing material detected by a sensor provided on the material tray 11 drops to a predetermined threshold.

[0225] In step S20, the forward rotation of the drive device 20 is controlled based on the supply command.

[0226] When the control module 19 receives a supply command, it indicates that printing material needs to be replenished in the material tray 11, and based on this, the control module 19 controls the forward rotation of the drive device 20 to cause the material supply mechanism 14 to replenish the printing material in the material tray 11, thereby achieving the purpose of timely replenishing the printing material in the material tray 11.

[0227] Referring to FIG. 47, in one embodiment, the output assembly 300 is composed of a housing 330 and a lock assembly 340, and after step S10, the 3D printing method further includes step S15.

[0228] In step S15, the movement of the lock member 341 is controlled to bring the movable chamber 3421 into electrical continuity.

[0229] In other words, the control module 19 must first control the movement of the lock member 341 to open the movable chamber 3421, and in this case, the printing material can be led out of the movable chamber 3421 and the material discharge chamber 422 by the forward rotation of the conveying member 120, thereby replenishing the printing material in the material tray 11. In addition, by executing step S20 after the movable chamber is opened, efficient replenishment of the printing material can be ensured.

[0230] In addition, the method in which the control module 19 controls the opening of the locking member 341 is such that the control module 19 drives the driving device 20 to rotate the locking member 341 to realize "unlocking", and then drives the locking member 341 to move along the movable chamber 3421 to connect the first passage 34211 and the second passage 34212. Of course, in another embodiment, the locking assembly 340 is "unlocked" when the material supplying mechanism 14 is attached to the 3D printer 10, and in this case, the execution of step S15 can be canceled.

[0231] 45, in another embodiment, since the opening / closing member 320 is provided inside the material discharge passage 311 of the material discharge member 310, in order to facilitate the transport of the printing material, step S20 includes a step of controlling the driving device 20 to rotate forward at an operating speed equal to or higher than a predetermined speed based on a supply command. On this basis, when the driving device 20 rotates forward at a rotation speed equal to or higher than a predetermined speed, the transporting member 120 rotates forward at a rotation speed equal to or higher than a predetermined speed, thereby enabling the pressure applied by the printing material to the opening / closing member 320 to be equal to or higher than a predetermined set pressure, so that the opening / closing member 320 can open the material discharge passage 311, and thus the printing material can be introduced into the material tray 11.

[0232] In step S30, a mixing command is received.

[0233] A user can issue a stirring command via a smart terminal, a remote control, etc. Alternatively, the user can issue a stirring command by pressing or touching a control button provided on the 3D printer 10. Alternatively, a stirring command can be triggered when a sensor provided in the material storage chamber 111 detects that the standing time of the printing material in the material storage chamber 111 exceeds a predetermined threshold.

[0234] In step S40, the reverse rotation of the drive unit 20 is controlled based on the agitation command.

[0235] When the control module 19 receives a stirring command, the control module 19 controls the reverse rotation of the drive device 20, and at this time, the drive device 20 drives the reverse rotation of the conveying member 120, so that the printing material in the material storage chamber 111 is stirred by the conveying member 120, thereby improving the problem of sediment formation in the printing material.

[0236] Optionally, referring to FIG. 47, in one embodiment of the present application, i.e. when the output assembly 300 is formed with the housing 330 and the lock assembly 340, after step S30, the 3D printing method further includes step S35.

[0237] In step S35, the movement of the lock member 341 is controlled to close the movable chamber 3421.

[0238] In other words, when it is necessary to stir the material supply mechanism 14, it is first necessary to close the movable chamber 3421 by the lock member 341 to prevent the printing material from being discharged from the movable chamber 3421 and the material discharge chamber 3422. It should be understood that when a stirring command is received in step S30, if it is detected that the lock member 341 is in a state to close the movable chamber 3421, the execution of step S35 can be canceled.

[0239] After the movable chamber 3421 is closed, the driving device 20 is controlled to rotate forward to stir the printing material. Here, when the movable chamber 3421 is closed by the locking member 341, none of the printing material can be discharged from the movable chamber 3421 and the material discharge chamber 3422, and based on this, the printing material can be stirred by controlling the forward rotation of the conveying member 120. In other embodiments, when the movable chamber 3421 is closed, the conveying member 12 can be controlled to rotate in the reverse direction to stir the printing material.

[0240] 45, in another embodiment, since the opening and closing member 320 can only be conductive when it receives a certain pressure, after receiving the stirring command in step S30, the 3D printing method may further include a step of driving the driving device 20 to rotate forward at an operating speed less than a predetermined speed based on the stirring command. Here, when the driving device 20 rotates forward at an operating speed less than the predetermined speed, the conveying member 120 rotates forward at a rotation speed less than the predetermined speed, so that when the pressure applied by the printing material to the opening and closing member 320 is less than the predetermined pressure, the opening and closing member 320 can close the material discharge passage 311, thereby stopping the introduction of the printing material into the material tray 11. Similarly, when the driving device 20 rotates in the reverse direction, the conveying member 120 rotates in the reverse direction, so that when the pressure applied by the printing material to the opening and closing member 320 is less than the predetermined pressure, the opening and closing member 320 can close the material discharge passage 311, thereby stopping the introduction of the printing material into the material tray 11. In addition, the conveying member 120 can provide an agitating effect to the printing material in the material storage chamber 111 while rotating, thereby improving the problem of the printing material in the material storage chamber 111 settling.

[0241] It should be noted that the above-mentioned steps S10 and S30 are not in any order, and when the control module 19 receives a supply command, it executes the operation of step S20, and when the control module 19 receives a mixing command, it executes the operation of step S40.

[0242] To sum up, when the 3D printing method receives a supply command, the control module 19 can control the drive device 20 to rotate forward at an operating speed equal to or higher than a predetermined speed, so that the pressure applied by the printing material to the opening and closing member 320 can be equal to or higher than a predetermined pressure, thereby allowing the opening and closing member 320 to conduct the material discharge passage 311, and the printing material can be replenished in the material tray 11. Correspondingly, when a stirring command is received, the control module 19 can control the drive device 20 to rotate forward at an operating speed lower than a predetermined speed, or control the drive device 20 to rotate in reverse, so that the pressure applied by the printing material to the opening and closing member 320 can be lower than a predetermined pressure, so that the opening and closing member 320 closes the material discharge passage 311, in which case the printing material in the material storage chamber 111 can be stirred by the rotation of the conveying member 120, thereby realizing stirring of the printing material and preventing the printing material from sedimentation. Therefore, the 3D printing method can not only meet the requirement that the 3D printer 10 timely replenishes the printing material, but also prevent the printing material from sedimentation.

[0243] In addition, the present application further provides a 3D printing method, and in one embodiment, referring to FIG. 48, the 3D printing method may include the following steps S01 to S03.

[0244] In S01, light-cured 3D printing is performed to mold the printing material into a three-dimensional article 1000 in a molding stage 12.

[0245] Figure 49 is a scene diagram corresponding to performing step S01 in the 3D printing method provided in this embodiment. In this embodiment, the three-dimensional object 1000 is directly attached to the molding stage 12, and in other embodiments, as shown in Figure 50, if necessary, before molding the three-dimensional object 1000, the support structure 25 may be first molded on the molding stage 12 using the printing material, and thus the subsequently molded three-dimensional object 1000 is connected to the molding stage 12 through the support structure 25, that is, both ends of the support structure 25 are respectively connected to the molding stage 12 and the three-dimensional object 1000.

[0246] The molding stage 12 used in the 3D printing method provided in this embodiment is a one-time disposable member. Specifically, the molding stage 12 may be at least one of an integrally molded plastic part, a straw member, and a metal member, which helps to reduce the cost of the molding stage 12. Its manufacturing methods include, but are not limited to, injection molding, 3D printing, blister molding, blow molding, and extrusion molding. Optionally, the thickness of the molding stage 12 is 1mm to 5mm, so that the cost of the molding stage 12 can be reduced as much as possible under the premise of ensuring that the molding stage 12 has reliable mechanical performance.

[0247] In this embodiment, the molding stage 12 is an integrally molded plastic part, and the plastic part can be surface-treated to make the surface of the manufactured molding stage 12 have a micro-texture or to increase the surface roughness of the molding stage 12, thus increasing the adhesive force between the surface of the molding stage 12 and the three-dimensional object 1000, and preventing the three-dimensional object 1000 from falling off the surface of the molding stage 12. Optionally, the plastic part can be surface-treated using at least one of spray painting, sandblasting, matte, engraving, electroplating, plating, printing, embossing, polishing, painting, oiling, ion plating, laser treatment, texturing, electric discharge machining, oil spray, silk printing, laser engraving, water transfer, embossing, mechanical engraving, film bonding, chemical etching, and hairline finishing.

[0248] Because the molding stage 12 is a one-time disposable component, after completing printing and separating it from the three-dimensional article 1000, the user can directly dispose of the molding stage 12, without the need for subsequent maintenance, servicing or cleaning of the molding stage 12, and the condition of the molding stage 12 is not damaged, and material replacement does not require any adaptive processing of the molding stage 12, such as the need to clean the molding stage 12.

[0249] Optionally, in this embodiment, the forming stage 12 is a bowl-shaped structure, and it should be understood that in other embodiments, the structural form of the forming stage 12 may be specifically set as needed, for example, the forming stage 12 is set to be flat, cup-shaped, or disk-shaped, etc.

[0250] In S02, the three-dimensional article 1000 is subjected to post-processing.

[0251] After the printing of the three-dimensional object 1000 is completed, the three-dimensional object 1000 can be post-processed. At this time, the three-dimensional object 1000 and the molding stage 12 are not yet separated. Therefore, when the three-dimensional object 1000 is post-processed in this manner, the molding stage 12 moves along with the three-dimensional object 1000, that is, the molding stage 12 performs the post-processing together with the three-dimensional object 1000, and after the post-processing is completed, the printed material can be removed, making it easier to handle.

[0252] In this way, during the post-processing process, the molding stage 12 can serve as a carrier to carry out subsequent operations on the three-dimensional article 1000. For example, a user can directly take the molding stage 12 to realize the transfer of the three-dimensional article 1000. The molding stage 12 serves as a connection structure between the post-processing device and the three-dimensional article 1000, that is, the connection between the post-processing device and the molding stage 12 is realized to realize the connection between the three-dimensional article 1000 and the post-processing device. This can prevent the problem of deformation or damage to the three-dimensional article 1000 during the post-processing and transfer processes, and the jigs or locking mechanisms of each post-processing device can be installed as general-purpose products, thus saving development time to a certain extent.

[0253] FIG. 51 is a sub-step diagram of step S02 in the 3D printing method provided in this embodiment. Specifically, in this embodiment, step S02 includes the following steps S21 and S22.

[0254] In S21, the printed material on the surface of the three-dimensional article 100 is removed.

[0255] It should be understood that the printing material on the surface of the three-dimensional article 1000 can be removed using at least one of centrifugation, spraying, and ultrasonic treatment, and the removal method is not limited here.

[0256] 52 is a schematic diagram of the scene when step S21 is performed in the 3D printing method provided in this embodiment, in which the printing material on the surface of the three-dimensional object 1000 is removed by centrifugal shaking in this embodiment, specifically, the printing material on the surface of the three-dimensional object 1000 is liquid photosensitive resin. The forming stage 12 is connected to a centrifugal device 21, and the centrifugal device 21 drives the rotation of the forming stage 12, at which time the three-dimensional object 1000 rotates synchronously with the forming stage 12, thereby shaking off the printing material attached to the three-dimensional object 1000. In addition, before or during the centrifugal device 21 drives the rotation of the forming stage 12, a cleaning liquid is sprayed onto the three-dimensional object 1000 on the forming stage 12. Specifically, after the forming stage 12 is connected to the centrifugal device 21, a spray device 22 is provided on one side thereof, and thus the cleaning liquid is sprayed onto the three-dimensional object 1000 by the spray device 22. Optionally, the cleaning liquid is a solvent capable of dissolving the printing material, and thus the viscosity of the printing material can be reduced, making it easier to shake off the printing material.

[0257] In S22, the three-dimensional article 1000 is treated in a curing device to deeply cure the three-dimensional article 1000.

[0258] It should be understood that in this embodiment, the three-dimensional article 1000 can be processed using a curing device to quickly and deeply cure the three-dimensional article, and in other embodiments, the three-dimensional article 1000 can be deeply cured using a method that does not require a curing device, such as drying in the sun.

[0259] 53 is a schematic diagram of the scene when performing step S22 in the 3D printing method provided in this embodiment, in this embodiment, the curing device includes a curing lamp 24, which irradiates the three-dimensional object 1000, thereby deeply curing the three-dimensional object 1000, thereby improving the mechanical performance of the three-dimensional object 1000. In addition, when the curing lamp 24 irradiates the three-dimensional object 1000, the molding stage 12 and the three-dimensional object 1000 thereon rotate relative to the curing lamp 24, so that the curing lamp 24 can fully irradiate each part of the three-dimensional object 1000, and the curing is uniform and effective.

[0260] In this embodiment, the curing device further includes a rotating device 23, and the forming stage 12 is connected to the rotating device 23, whereby the rotating device 23 drives the forming stage 12 to rotate relative to the curing lamp 24, and the three-dimensional article 1000 on the forming stage 12 rotates accordingly relative to the curing lamp 24.

[0261] It should be understood that in this embodiment, the relative rotation between the molding stage 12 and the curing lamp 24 is achieved by rotating the molding stage 12, while in other embodiments, the relative rotation between the molding stage 12 and the curing lamp 24 is achieved by driving the rotation of the curing lamp 24 with the rotation device 23 and holding the molding stage 12 stationary, or that both the molding stage 12 and the curing lamp 24 can be rotated but can be installed so that they have different rotation speeds or directions.

[0262] Optionally, the number of the curing lamps 24 is multiple, and the multiple curing lamps 24 are distributed around the rotation axis of the forming stage 12, i.e., the multiple curing lamps 24 are provided around the forming stage 12 and the three-dimensional article 1000. It should be understood that in this embodiment, the number of the curing lamps 24 is two, and in other embodiments, the number of the curing lamps 24 may be specifically set as needed, for example, three, four, etc.

[0263] It should be understood that the specific structure of the curing device is not limited here, and in other embodiments, the structure of the curing device may be set as needed, for example, the curing device may be set to further include a thermal curing device (e.g., an oven) so as to adopt a light-heat dual curing method to cure the three-dimensional object 1000, or the curing device may be set to further include a humidifying device so as to adopt a light-moisture dual curing method to cure the three-dimensional object 1000.

[0264] In this embodiment, the forming stage 12 has an identifier 26, in which the production data is stored, and which can be stored by one or more of the following: two-dimensional code, character code, numeric code, bar code, custom pattern, NFC tag, RFID tag, electronic chip, etc. In other embodiments, other storage and identification methods in the related art can be used to attach an identifier to the forming stage 12.

[0265] Optionally, the production data in the identifier 26 may include at least one of the type of printing material, the printing parameters of the three-dimensional article 1000, and the process parameters of the post-processing device, and the process parameters of the post-processing can be directly obtained by obtaining the identifier 26, and the corresponding post-processing process parameters can also be matched according to the data in the production data, such as the type of printing material and the printing parameters of the three-dimensional article 1000. The process parameters of the post-processing may include the type of post-processing, the corresponding control parameters during cleaning, the control parameters of the curing device, etc.

[0266] In this embodiment, the production data stored in the identifier 26 on the molding stage 12 may further include process parameters for performing post-processing on the three-dimensional article. After identifying and obtaining the identifier 26 in this manner, the process parameters for post-processing, such as the composition of the sprayed cleaning liquid and the irradiation time of the curing lamp 24, can be determined based on the identifier 26, and the corresponding post-processing device can be easily controlled to perform the corresponding operation based on the process parameters.

[0267] Furthermore, the identifier 26 may include printing parameters, etc. Here, the printing parameters include slice files of the three-dimensional article 1000 and printer control parameters, etc. Specifically, before 3D printing, the printing parameters are pre-registered in the identifier 26 of the forming stage 12, and during or before printing, the data stored in the identifier 26 is read to obtain the printing parameters, and the printing operation is performed based on the printing parameters, resulting in a high degree of automation.

[0268] The control parameters during cleaning may include the centrifugal rotation speed of the centrifugal device 21, the nozzle pressure of the spray device 22, the spray time, the number of centrifugal rotations and sprays, and the flow sequence, etc. The control parameters of the curing device may include the curing time, the rotation speed, the rotation stop time, the rotation stop angle, the rotation angle, etc.

[0269] It should be noted that the data type in the identifier 26 is not limited here, and in other embodiments, the identifier may include other production data, such as the production time of the three-dimensional article 1000, the user to which it belongs, the associated printer, etc. It should be noted that the identifier 26 in this embodiment may further have the features and functions of the identifier on the forming stage 12 in the previous embodiment, and the relevant details may be referred to the previous embodiment, and the duplicated description will be omitted here.

[0270] In S03, the three-dimensional article 1000 and the forming stage 12 are separated.

[0271] FIG. 54 is a schematic diagram of a scene when performing step S03 in the 3D printing method provided in this embodiment, in which the three-dimensional object 1000 is directly attached to the molding stage 12, and thus the three-dimensional object 1000 can be directly carved out of the molding stage 12.

[0272] In addition, in this embodiment, the step of separating the three-dimensional object 1000 from the molding stage 12 is performed after step S02, and thus, in the process of performing step S02, the three-dimensional object 1000 always moves synchronously with the molding stage 12, and thus, the molding stage 12 can be used as a mounting member for the three-dimensional object 1000 in the process of performing step S02, and since the molding stage 12 is a one-time disposable member, the molding stage 12 can be discarded after the three-dimensional object 1000 is separated from the molding stage 12, so there is no need to consider the problem that each step in the post-processing may damage the molding stage 12, and when the three-dimensional object 1000 is separated from the molding stage 12, the mechanical performance of the three-dimensional object 1000 is further enhanced, which helps to avoid the problem of deformation and damage that may occur to the three-dimensional object 1000 after the three-dimensional object 1000 is separated from the molding stage 12. It should be understood that in other embodiments, step S03 may be performed before step S02 as necessary.

[0273] In addition, when there is a support structure 25 (for example, the structure shown in FIG. 50) between the three-dimensional object 1000 and the forming stage 12, the three-dimensional object 1000 and the forming stage 12 can be separated by destroying the support structure 25. At least a part of the destroyed support structure 25 remains connected to the forming stage 12 (as shown in FIG. 55), and the forming stage 12 and the support structure 25 connected thereto can then be discarded, making the operation easy.

[0274] In summary, the 3D printing method provided in the present application uses a disposable molding stage 12, so that not only is there no need to carry out any adaptive processing on the stage when replacing the printing material, but also no need to clean the stage, in other words, it is possible to avoid the maintenance, maintenance and cleaning work on the molding stage 12 that follows; furthermore, all the molding stages 12 used in 3D printing are new, and there is no need to use molding stages that are old and may have a certain degree of wear and tear, so that the printing quality and stability can be guaranteed; and there is no need to consider problems such as damage and corrosion of the molding stage 12 during post-processing. In this way, after printing, the molding stage 12 is used as a mounting member in the entire post-processing process, and the three-dimensional object 1000 is placed on it to carry out the work, and after the post-processing is completed, the three-dimensional object 1000 is removed, and the insertion and removal are fixed and made easier. In addition, the problem of deformation and damage of the three-dimensional object 1000 caused by separating the three-dimensional object 1000 from the molding stage 12 before post-processing can be improved. In addition, an identifier 26 is further provided on the molding stage 12, which can record the production information of the three-dimensional article 1000 and identify the process parameters of the printing process and post-processing process of the three-dimensional article 1000, making the production process smarter and helping to improve production efficiency and production quality.

[0275] The 3D printer in the present application may include multiple molding stages 12, each of which is a single-use disposable member, and can be used in the process of producing a three-dimensional object 1000 according to the above-mentioned 3D printing method, and the printing material can be pre-stored in the material tray 11 and used to produce the three-dimensional object 1000. According to the amount of photocurable material pre-stored in the material tray 11, the material tray 11 can be used a predetermined number of times, i.e., a predetermined number of three-dimensional objects 1000 can be produced, and the material tray 11 can be discarded after the predetermined number of three-dimensional objects 1000 are produced, i.e., the material tray 11 can also be regarded as a single-use disposable member. The number of molding stages 12 is adapted to the predetermined number of three-dimensional objects 1000, thereby ensuring that the number of molding stages 12 meets the use requirements of the material tray 11, i.e., the number of molding stages 12 is equal to or greater than the predetermined number of three-dimensional objects 1000.

[0276] In this way, when manufacturing the three-dimensional article 1000, a corresponding consumable assembly can be selected according to the number of three-dimensional articles 1000 to be manufactured. For example, when two three-dimensional articles 1000 need to be manufactured, a consumable assembly can be selected in which the amount of printing material pre-stored in the material tray 11 corresponds to the two three-dimensional articles 1000. In this way, after completing the manufacturing of the required amount of three-dimensional articles 1000, the printing material pre-stored in the material tray 11 can be used up, and the material tray 11 can be directly discarded, without the need to leave the printing material for the next use, thereby avoiding problems such as deterioration of the printing material, and avoiding the situation where the three-dimensional article 1000 has quality problems due to the deterioration of the printing material.

[0277] Based on the above-mentioned embodiments, in one embodiment, the 3D printer includes a material tray 11, a control module 19 and a liquid level detection mechanism, the liquid level detection mechanism includes a detection assembly 802 and a processing assembly 803, of which the detection assembly 802 is provided on the material tray 11 and is used to enter the liquid storage area of ​​the material tray 11, and the processing assembly 803 is connected to the control module 19 and is detachably connected to the detection assembly 802.

[0278] In one embodiment, the 3D printer includes a material tray 11, a frame 15 and a film tensioning member 18, the film tensioning member 18 is configured to be installable on the frame 15, the material tray 11 includes a release film 27, is slidably fitted into the frame 15 and is configured to have a fixed position, and in the process of the material tray 11 moving in a first direction a relative to the frame 15, the release film 27 gradually approaches the film tensioning member 18, and is configured such that when the material tray 11 moves to the fixed position, the release film 27 is pulled by the film tensioning member 18.

[0279] In one embodiment, the 3D printer includes a lifting mechanism 17, a stage connection mechanism 28 and a molding stage 12, the stage connection mechanism 28 is connected to the lifting mechanism 17, the molding stage 12 includes a stage body 101, a first slide connection portion 104 and a limiting portion 102, the first slide connection portion 104 is connected to the stage body 101 and is used to slidably connect to the stage connection mechanism 28, and the limiting portion 102 is provided on the first slide connection portion 104 and is used to engage with the stage connection mechanism 28 when the stage body 101 slides to a predetermined position relative to the stage connection mechanism 28 and limit the sliding of the molding stage 12.

[0280] In one embodiment, the 3D printer includes a material tray 11 and a molding stage 12, of which the molding stage 12 is located on one side of the material tray 11 and is used to bond a cured sheet formed by curing the printing material layer by layer to obtain a three-dimensional article 1000, where the molding stage 12 is a single-use disposable member.

[0281] In one embodiment, the 3D printer includes a case 29 and a mold assembly, where the case 29 has a window 297 that allows the mold assembly to be inserted and removed from the case 29, and where the case 29 is provided with a closing door 298 that can automatically close the window 297, or where the window 297 is sealed to the mold assembly after the mold assembly is installed in the case 29.

[0282] In one embodiment, the 3D printer includes a material tray 11, which includes a tray body 411, a cover 415, and an elastic support member 423. The tray body 411 has a notch and is provided with a first fitting member 422, the cover 415 is provided with a second fitting member 417 that fits into the first fitting member 422, and has a closed position that covers the tray body 411 and seals the notch, and an open position that opens the notch, where when the cover 415 is in the closed position, the second fitting member 417 and the first fitting member 422 fit together to lock the cover 415 and the tray body 411 to hold the closed position, and the elastic support member 423 is provided between the cover 415 and the tray body 411 and is used to provide an elastic force to hold the cover 415 in the open position.

[0283] In one embodiment, the 3D printer includes a molding stage 12 having a molding surface 125, which is used to adhere a 3D printed object formed by exposing and curing a photocurable material, where the molding stage is made of a modified plastic material, and the adhesive force between the molding surface 125 and the printed layer formed by exposing and curing the photocurable material is 1.5 N or 3 N or more per square centimeter.

[0284] In one embodiment, the 3D printer includes a molding stage 12, which is made of a plastic material and has a molding surface 125 obtained by surface treatment, and the molding surface 125 is used to bond a 3D printed object formed by exposing a photocurable material to light and curing it.

[0285] Here, the surface treatment includes at least one of spray painting, sandblasting, matt, engraving, electroplating, plating, printing, embossing, polishing, painting, oiling, ion plating, and laser treatment.

[0286] Here, the surface treatment is spray coating, and the raw materials used in the spray coating include, by mass, 100 parts of photocurable resin, 80 to 150 parts of diluent, and 0.05 to 2 parts of initiator, among which the photocurable resin is selected from at least one of acrylate-based, allyl ether-based, and vinyl ether-based, and the number average molecular weight of the photocurable resin is 4000 to 10W.

[0287] In one embodiment, the 3D printing method includes the steps of a 3D printer performing light-curing 3D printing to mold the printing material into a three-dimensional article 1000 in a molding stage 12, post-processing the three-dimensional article 1000, and separating the three-dimensional article 1000 and the molding stage 12, where the molding stage 12 is a single-use disposable member.

[0288] It should be noted that the terminology used herein is merely for the purpose of describing specific embodiments and is not intended to limit the exemplary embodiments of the present application. As used herein, unless the context clearly indicates otherwise, the singular is intended to include the plural, and it should be understood that when the terms "comprise" and / or "include" are used herein, they indicate the presence of features, steps, operations, devices, assemblies, and / or combinations thereof.

[0289] It should be noted that the terms "first," "second," etc. in the specification, claims, and drawings are used to distinguish between similar objects and are not intended to describe a particular order or chronology. It should be understood that such terms used may be interchanged where appropriate such that the embodiments of the present application described herein can be practiced in orders other than those illustrated or described herein.

[0290] The above is only a preferred embodiment of the present application, and does not limit the present application. Those skilled in the art can make various modifications and variations to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application should be included within the protection scope of the present application.

Claims

1. A material supply mechanism configured to replenish printing material in a material tray (11) of a three-dimensional printer, comprising: a conveying assembly (100) including a material storage body (110) having a material storage chamber (111) for storing the printing material therein, and a conveying member (120) provided within the material storage chamber (111); a transmission assembly (200) that is transmission-connected to the conveying member (120) and that, when driven, is used to drive the conveying member (120) to move within the material storage chamber (111); an output assembly (300) connected to the material storage (110) and used to direct the printing material into the material tray (11); A material supply mechanism characterized in that a liquid level detection mechanism is provided in the material tray (11), the liquid level detection mechanism is used to detect the amount of the printing material in the material tray (11), and the material supply mechanism is used to introduce or stop the introduction of the printing material into the material tray (11) based on the detection result of the liquid level detection mechanism.

2. The output assembly (300) comprises: a housing (330) connected to the material storage body (110) and having a storage space; A lock assembly (340) provided in the receiving space, A lock body (342) is provided in the storage space, and has a movable chamber (3421) and a material discharge chamber (3422) that communicate with each other, the movable chamber (3421) communicates with the material storage chamber (111), and the material discharge chamber (3422) is used to discharge the printing material; The material supply mechanism of claim 1, further comprising: a lock assembly (340) including a lock member (341) movably disposed within the movable chamber (3421) for selectively establishing or interrupting communication between the movable chamber (3421) and the material storage chamber (3422).

3. The movable chamber (3421) includes a first passage (34211) and a second passage (34212) that are connected to each other, the inner diameter of the first passage (34211) is larger than the inner diameter of the second passage (34212), one of the first passage (34211) and the second passage (34212) is connected to the material discharge chamber (3422), and the other is connected to the material storage chamber (111); The material supply mechanism of claim 2, characterized in that the locking member (341) has a first blocking portion (3411), which is movably assembled within the movable chamber (3421) and is used to block the second passage (34212) when at least a portion of the first blocking portion (3411) enters the second passage (34212), and to further enter the first passage (34211) to establish electrical continuity between the first passage (34211) and the second passage (34212).

4. The first passage (34211) is A movable area (301) located at one axial end of the second passage (34212) and having a radial dimension equal to the inner diameter of the second passage (34212); 4. The material supply mechanism according to claim 3, further comprising a flow guide region (302) provided around the movable region (301).

5. The material supply mechanism of claim 4, characterized in that the lock body (342) further includes a restraining portion (303), which is provided within the flow guide region (302) and is used to abut against the outer periphery of the first blocking portion (3411) after the first blocking portion (3411) enters the first passage (34211) to restrain the first blocking portion (3411) within the movable region (301).

6. The material supply mechanism of claim 3, characterized in that the lock body (342) includes a first stopper portion (304), which is located at an end of the second passage (34212) away from the first passage (34211) and is used to abut against the first blocking portion (3411) to restrain the first blocking portion (3411) within the movable chamber (3421).

7. the movable chamber (3421) further includes a third passage (34213), the third passage (34213) is opened on a side of the lock body (342) away from the material storage chamber (111), and one of the first passage (34211) and the second passage (34212) that communicates with the material discharge chamber (3422) communicates with the third passage (34213); The material supply mechanism according to claim 3, characterized in that the locking member (341) further has a second blocking portion (3412) spaced apart from the first blocking portion (3411), the second blocking portion (3412) being slidably disposed within the third passage (34213) and being used to close the third passage (34213).

8. The material supply mechanism of claim 7, characterized in that the locking member (341) further includes an operating portion (3414), which is connected to the side of the second closing portion (3412) away from the first closing portion (3411) and exposed to the outside of the housing (330) from the side of the locking body (342) away from the material storage body (110), and is used to drive the first closing portion (3411) and the second closing portion (3412) to move within the movable chamber (3421) after receiving an acting force.

9. the lock body (342) includes an engagement member (3424), the engagement member (3424) is provided in the material discharge chamber (3422), the lock member (341) includes an engagement member (3415) that fits the engagement member (3424), the engagement member (3415) is used to engage with the engagement member (3424) to restrict the lock member (341) from conducting through the movable chamber (3421); The material supply mechanism of claim 2, characterized in that the locking member (341) is further used to rotate when the movable chamber (3421) is closed, thereby engaging the engaging member (3415) with the engaging member (3424) or releasing the engagement between the engaging member (3415) and the engaging member (3424).

10. The engaging member (3424) includes an engaging portion (34242) and a first connecting portion (34241), one end of the first connecting portion (34241) is connected to the inner wall of the material discharge chamber (3422), the first connecting portion (34241) is extended along the extension direction of the movable chamber (3421), the engaging portion (34242) is connected to the other end of the first connecting portion (34241), and the engaging portion (34242) and the first connecting portion (34241) are arranged to form an included angle, The material supply mechanism of claim 9, characterized in that the locking member (341) further includes a connection body (3413), the engaging member (3415) includes an engaging portion (34152) and a second connecting portion (34151), one end of the second connecting portion (34151) is connected to the connection body (3413), the engaging portion (34152) is connected to the other end of the second connecting portion (34151), and is arranged at an included angle with the second connecting portion (34151), and is used to engage with the engagement portion (34242).

11. The material supply mechanism of claim 9, characterized in that the lock body (342) further includes a second stopper portion (305), which is provided within the movable chamber (3421) and protrudes from the inner circumferential wall of the movable chamber (3421), and when the lock member (341) brings the movable chamber (3421) into electrical conduction, the second stopper portion (305) abuts against the engaging member (3415) and is used to limit the movement of the lock member (341).

12. The material supply mechanism of claim 2, characterized in that an outlet portion (3423) is protruded from the lock body (342), a guide groove (34231) is opened in the outlet portion (3423), the guide groove (34231) is connected to the material discharge chamber (3422), an outlet (331) is opened in the housing (330), and the outlet portion (3423) passes from the outlet (331) to the outside of the housing (330) to outlet the printing material.

13. The material supply mechanism of claim 1, wherein the output assembly (300) includes a material discharge member (310) and an opening / closing member (320), the material discharge member (310) is connected to the material storage body (110) and has a material discharge passage (311) communicating with the material storage chamber (111), and the opening / closing member (320) is connected to the material discharge member (310) and configured to open the material discharge passage (311) when the pressure received from the printing material is equal to or greater than a predetermined pressure, and to close the material discharge passage (311) when the pressure received from the printing material is less than the predetermined pressure.

14. 2. The material supply mechanism of claim 1, wherein the conveying member (120) further includes a transmission shaft (121) and a conveying portion (122), the conveying portion (122) is arranged on the outer periphery of the transmission shaft (121) along a spiral path, the transmission shaft (121) extends from the material storage body (110), and an end portion extending from the material storage body (110) is connected to the transmission assembly (200) and engages with the transmission assembly (200).

15. 2. The material supply mechanism of claim 1, further comprising a control module (19) and a drive device (20), the drive device (20) being transmission-connected to the transmission assembly (200) and used to drive the rotation of the transmission assembly (200), the control module (19) being electrically connected to the drive device (20) and configured to control the drive device (20) to adjust a rotation direction or adjust a rotation speed based on a control command received.

16. The material supply mechanism of claim 15, characterized in that the liquid level detection mechanism is electrically connected to the control module (19), and the control module (19) is further used to control the operation of the drive device (20) to introduce the printing material into the material tray (11) when the liquid level detection mechanism detects that the amount of the printing material in the material tray (11) is lower than a predetermined amount.

17. The liquid level detection mechanism includes: a detection assembly (802) provided on the material tray (11) and adapted to be placed within a liquid storage area of ​​the material tray (11); 16. The material supply mechanism of claim 15, further comprising: a processing assembly (803) connected to the control module (19) and removably connected to the detection assembly (802).

18. The detection assembly (802) comprises: A detection chip (8021) provided on the material tray (11) or on a member other than the material tray (11) in the 3D printer; The material supply mechanism of claim 17, further comprising: a plurality of detection elements (8022), each of which is removably or fixedly connected to the detection chip (8021), and each of which fits within the liquid storage area of ​​the material tray (11).

19. A material supply mechanism configured to replenish printing material in a material tray (11) of a three-dimensional printer, comprising: a conveying assembly (100) having a material storage chamber (111) for storing the printing material, and a conveying member (120) disposed within the material storage chamber (111) and rotating when driven to agitate the printing material; an output assembly (300) for selectively delivering the printing material from the material storage chamber (111) to the material tray (11) or blocking the delivery of the printing material.

20. A material supply mechanism configured to replenish printing material in a material tray (11) of a three-dimensional printer, comprising: a conveying assembly (100) having a material storage chamber (111) for storing the printing material, and a conveying member (120) disposed within the material storage chamber (111) and rotating when driven to agitate the printing material; and an output assembly (300) having a material discharge passage (311) communicating with the material tray (11) and the material storage chamber (111), respectively, and an opening / closing member (320) located in the material discharge passage (311) and configured to open the material discharge passage (311) to guide the printing material to the material tray (11) when the pressure received from the printing material in the material storage chamber (111) is equal to or greater than a predetermined pressure, and to close the material discharge passage (311) when the pressure received from the printing material is less than the predetermined pressure.

21. A material tray assembly comprising: a material tray (11); and a material supply mechanism according to any one of claims 1 to 20, the material supply mechanism being removably or non-removably connected to the material tray (11).

22. 22. The material tray assembly of claim 21, further comprising a level detection mechanism attached to the material tray (11) and used to detect a level of the printing material in the material tray (11).

23. A material tray (11) for storing printing material; a material supply mechanism (14) connected to the material tray (11) and configured to replenish the printing material in the material tray (11), the material supply mechanism (14) being a material supply mechanism (14) according to any one of claims 1 to 20; or A 3D printer comprising a material tray assembly according to any one of claims 21 to 22.

24. A frame (15); a film tensioning member (18) configured to be mountable to the frame (15); The 3D printer of claim 23, characterized in that the material tray (11) includes a release film (27), is configured to slidably fit into the frame (15), and has a fixed position, and in the process of the material tray (11) moving in a first direction (a) relative to the frame (15), the release film (27) gradually approaches the film tensioning member (18), and is configured to be pulled by the film tensioning member (18) when the material tray (11) moves to the fixed position.

25. 25. The 3D printer of claim 24, further comprising a guide portion (700) provided on the frame (15) and used to guide the material tray (11) to move relative to the frame (15).

26. The film tensioning member (18) is attached to the mounting seat (16), the mounting seat (16) is slidable in a second direction (b) relative to the frame (15) and is configured to have a predetermined position, and the first direction (a) and the second direction (b) are provided at an included angle; In the process in which the material tray (11) slides in the first direction (a) and the mounting seat (16) slides in the second direction (b), the gap between the material tray (11) and the mounting seat (16) gradually decreases; The 3D printer according to claim 24, characterized in that when the material tray (11) is located at the fixed position and the mounting seat (16) is located at the predetermined position, the release film (27) is pulled by the film pulling member (18).

27. The 3D printer according to claim 26, further comprising a stop member (600), the stop member (600) being connected to the mounting seat (16), such that, during the process of the material tray (11) moving in the first direction (a), one end of the material tray (11) abuts against the stop member (600) to push the stop member (600) and the mounting seat (16) to move synchronously, or the stop member (600) being connected to the material tray (11), such that, during the process of the material tray (11) moving in the first direction (a), the material tray (11) drives the stop member (600) to move synchronously, thereby enabling the stop member (600) to drive the synchronous movement of the mounting seat (16).

28. 27. The 3D printer of claim 26, further comprising an elastic member (610) configured to apply a force to the mounting seat (16) in a direction opposite to the second direction (b) such that the mounting seat (16) has a tendency to move away from the predetermined position when the mounting seat (16) is located at the predetermined position or in the process of moving along the second direction (b) toward the predetermined position.

29. 30. The 3D printer of claim 28, further comprising a first positioning member (620), the first positioning member (620) being provided on the frame (15), and the material tray (11) comprising a second positioning member (630), the second positioning member (630) engaging with the first positioning member (620) to lock the material tray (11) in the fixed position when the material tray (11) is moved to the fixed position.

30. The first positioning member (620) has a positioning groove (640), includes a bottom wall (641) and a top wall (642) that are oppositely distributed to define the positioning groove (640), and a connecting wall (643) that is connected between the bottom wall (641) and the top wall (642), the connecting wall (643) having a first positioning protrusion (646), and the top wall (642) having a second positioning protrusion (647); The second positioning member (630) includes a rotatably mounted guide pin (650), the guide pin (650) includes two flat surfaces (651) and two concave surfaces (652), the two flat surfaces (651) are arranged back to back and spaced apart from each other, the two concave surfaces (652) are arranged back to back and spaced apart from each other, and the two flat surfaces (651) are connected between the two concave surfaces (652); When the insert pin (650) enters the positioning groove (640), one of the two concave surfaces (652) can abut against the first positioning protrusion (646), and under the action of the elastic force of the elastic member (610), the material tray (11) moves in a direction away from the fixed position to abut the other of the two concave surfaces (652) against the second positioning protrusion (647). When the second positioning protrusion (647) is blocked, the insert pin (650) abuts both ends of one of the two flat surfaces (651) against the bottom wall (641) and the top wall (642), respectively, and rotates until the other of the two concave surfaces (652) abuts against the second positioning protrusion (647), thereby locking the material tray (11) at the fixed position.

30. The 3D printer of claim 29, wherein when the material tray (11) locked in the fixed position moves in a direction approaching the first positioning protrusion (646), the other of the two flat surfaces (651) abuts against the first positioning protrusion (646), and under the action of the elastic force of the elastic member (610), the material tray (11) becomes movable in a direction away from the fixed position, causing one of the two flat surfaces (651) to abut against the second positioning protrusion (647), and when the second positioning protrusion (647) is blocked, the index pin (650) rotates until one of the flat surfaces (651) coincides with the first direction (a), thereby allowing the index pin (650) to withdraw from the positioning groove (640).

31. The positioning groove (640) includes an entrance portion (648) and a locking portion (649) communicating with each other, the first positioning protrusion (646) and the second positioning protrusion (647) are both provided in the locking portion (649), the bottom wall (641) has a first leveling protrusion (644), and the first leveling protrusion (644) is located in the entrance portion (648); 31. The 3D printer of claim 30, characterized in that when the material tray (11) moves to the fixed position, one of the two planes (651) can abut against the first leveling protrusion (644), thereby allowing the index pin (650) to rotate within the entry portion (648) until either of the planes (651) coincides with the first direction (a), thereby allowing the index pin (650) to enter the lock portion (649) from the entry portion (648).

32. the bottom wall (641) further has a second leveling protrusion (645) located within the entry portion (648) and spaced apart from the first leveling protrusion (644), the second leveling protrusion (645) being located on a side of the first leveling protrusion (644) that faces the lock portion (649); 32. The 3D printer of claim 31, characterized in that, when the material tray (11) moves to the fixed position, one of the two concave surfaces (652) can abut against the first leveling protrusion (644), thereby allowing the index pin (650) to rotate until one of the two flat surfaces (651) abuts against the second leveling protrusion (645) and rotate within the entry portion (648) until either of the flat surfaces (651) coincides with the first direction (a), allowing the index pin (650) to enter the lock portion (649) from the entry portion (648).

33. A lifting mechanism (17); a stage connection mechanism (28) connected to the lift mechanism (17); A forming stage (12), A stage body (101), a first slide connection part (104) connected to the stage body (101) and used for slidably connecting to the stage connection mechanism (28); The 3D printer according to claim 23, further comprising a molding stage (12) including a limiting portion (102) provided on the first slide connection portion (104), which engages with the stage connection mechanism (28) when the stage body (101) slides to a predetermined position relative to the stage connection mechanism (28) and is used to limit the sliding of the molding stage (12).

34. The 3D printer according to claim 33, characterized in that the limiting portion (102) includes a movable block movably connected to the stage body (101), the movable block being used to abut against the stage connection mechanism (28) when the molding stage (12) slides to the predetermined position relative to the stage connection mechanism (28).

35. The stage connection mechanism (28) A connection seat (103) provided with a second sliding connection part (105), the second sliding connection part (105) is used to slidably fit into the first sliding connection part (104), the second sliding connection part (105) is a slider or a chute, and the first sliding connection part (104) is a chute or a slider; a stopper member (130) connected to the connection seat (103), which engages with the limiting portion (102) when the molding stage (12) slides to the predetermined position relative to the connection seat (103), and is used to limit the sliding of the molding stage (12) relative to the connection seat (103); 34. The 3D printer according to claim 33, further comprising: a connection member (140) connected to the connection seat (103) and used for connecting to a lifting mechanism (17) of the 3D printer.

36. The 3D printer according to claim 35, characterized in that a first positioning portion (112) is provided on a surface of the first slide connection portion (104) for contacting the second slide connection portion (105), a second positioning portion (123) is provided on a surface of the second slide connection portion (105) for contacting the first slide connection portion (104), the first positioning portion (112) is used to engage with the second positioning portion (123) when the molding stage (12) slides to the predetermined position relative to the connection seat (103), one of the first positioning portion (112) and the second positioning portion (123) is a positioning protrusion and the other is a positioning groove.

37. The 3D printer according to claim 36, characterized in that a first arcuate transition surface is provided on both ends of the positioning protrusion and the positioning groove along the direction in which the molding stage (12) slides relative to the connection seat (103).

38. The stopper member (130) includes a stopper block (131) movably connected to the connecting seat (103), and the limiting portion (102) is a stopper groove (113); The 3D printer according to claim 35, characterized in that the stopper block (131) is used to fit into the stopper groove (113) when the molding stage (12) slides to the predetermined position relative to the connection seat (103).

39. The 3D printer according to claim 38, characterized in that a second arc-shaped transition surface is provided at both ends of the stopper block (131) and the stopper groove (113) along the direction in which the molding stage (12) slides relative to the connection seat (103).

40. The stopper member (130) includes an elastic sheet (133) connected to the connecting seat (103), and the limiting portion (102) is a stopper groove (113); The 3D printer according to claim 35, characterized in that the elastic sheet (133) is used to fit into the stopper groove (113) when the molding stage (12) slides to the predetermined position relative to the connection seat (103).

41. The stopper member (130) includes a first magnetic member (134), and the limiting portion (102) includes a second magnetic member (135) and a third magnetic member (136), Along a direction in which the forming stage (12) slides relative to the connecting seat (103), the second magnetic member (135) and the third magnetic member (136) are sequentially connected to the forming stage (12); When the molding stage (12) slides to a position spaced apart from the predetermined position relative to the connecting seat (103), the first magnetic member (134) repels the second magnetic member (135), The 3D printer according to claim 35, characterized in that, when the molding stage (12) slides to the predetermined position relative to the connection seat (103), the first magnetic member (134) is attracted to the third magnetic member (136).

42. 24. The 3D printer of claim 23, further comprising a molding stage (12), the molding stage (12) being located on one side of the material tray (11) and used to bond a cured sheet material formed by curing the printing material layer by layer to obtain a three-dimensional article (1000), wherein the molding stage (12) is a single-use disposable member.

43. 43. The 3D printer of claim 42, wherein the forming stages (12) are multiple and the number of forming stages (12) is adapted to a predetermined number of the three-dimensional objects (1000) to be printed.

44. 43. The 3D printer of claim 42, wherein the molded stage (12) is at least one of a molded plastic member, a straw member, and a metal member.

45. 43. The 3D printer of claim 42, wherein the forming stage (12) has an identifier (26), the identifier (26) being used to store production data.

46. 46. ​​The 3D printer of claim 45, wherein the production data stored in the identifier (26) comprises post-processing process parameters or printing parameters of the three-dimensional object (1000).

47. 47. The 3D printer of claim 46, wherein the identifier (26) is at least one of a two-dimensional code, a character code, a digital code, a barcode, a custom pattern, an NFC tag, an RFID tag, and an electronic chip.

48. a molding assembly; a case (29) having a window (297) opening therein, said window (297) allowing said mold assembly to be inserted and removed from said case (29); 24. The 3D printer of claim 23, wherein the case (29) is provided with a closing door (298) that can automatically close the window (297) or the window (297) can be sealed to the molding assembly when the molding assembly is mounted in the case (29).

49. 49. The 3D printer of claim 48, wherein the case (29) is provided with a closing door (298), the closing door (298) can automatically close the window (297), the 3D printer further includes a driving mechanism and a first detection mechanism, the driving mechanism is transmission-connected to the closing door (298), the first detection mechanism is used to detect whether the molding assembly is inserted into or removed from the case (29), and the driving mechanism is used to drive the closing door (298) to close the window (297) when the molding assembly is inserted or removed, and to drive the closing door (298) to open the window (297) when an opening condition is met.

50. 50. The 3D printer of claim 49, further comprising a second detection mechanism, the second detection mechanism being used to detect whether the molding assembly approaches the closing door (298), and the opening condition comprising the second detection mechanism detecting the approach of the molding assembly to the closing door (298), and / or the second detection mechanism comprising a reader, an identifier being provided on the molding assembly, and the opening condition comprising the second detection mechanism identifying the identifier on the molding assembly as a valid identifier.

51. 49. The 3D printer of claim 48, further comprising a molding stage (12), the molding assembly comprising the material tray (11) and / or the molding stage (12).

52. The material tray (11) is A tray body (411) having a notch and provided with a first fitting member (422); a lid body (415) provided with a second engaging member that engages with the first engaging member, the lid body (415) having a closed position in which the lid body (415) covers the tray body (411) and seals the notch, and an open position in which the notch is opened, the second engaging member (417) and the first engaging member (422) engaging with each other to lock the lid body (415) and the tray body (411) together and maintain the closed position when the lid body (415) is located in the closed position; and an elastic support member (423) provided between the lid body (415) and the tray body and used to provide an elastic force to hold the lid body (415) in the open position. The 3D printer of claim 23, further comprising:

53. The 3D printer according to claim 52, characterized in that the lid body (415) is rotatably provided at one end of the tray body (411) to open and close a notch of the tray body (411).

54. 24. The 3D printer of claim 23, further comprising a molding stage (12), the molding stage (12) having a molding surface (125), the molding surface (125) being used to adhere a 3D printed object formed by exposing and curing a photocurable material, the molding stage being manufactured from a modified plastic material, and the adhesive force between the molding surface (125) and the printing layer formed by exposing and curing the photocurable material is 1.5 N or 3 N or more per square centimeter.

55. 55. The 3D printer of claim 54, wherein the molding stage is made of modified ABS material, and the raw material of the modified ABS material includes 70-80 wt% ABS resin, 5-20 wt% methacrylic resin, 5-10 wt% reinforcing fiber, and 1-5 wt% coupling agent.

56. 24. The 3D printer according to claim 23, further comprising a molding stage (12), the molding stage (12) being made of plastic and having a molding surface (125) obtained by surface treatment, the molding surface (125) being used to adhere a 3D printed object molded by exposing a photocurable material to light and curing it.

57. 57. The three-dimensional printer of claim 56, wherein the surface treatment includes at least one of spray painting, sandblasting, matte, engraving, electroplating, plating, printing, texturing, polishing, painting, oiling, ion plating, and laser treatment.

58. The surface treatment is spray coating, and the raw materials used in the spray coating include, by mass, 100 parts of a photocurable resin, 80 to 150 parts of a diluent, and 0.05 to 2 parts of an initiator; The 3D printer of claim 56, wherein the photocurable resin is selected from at least one of acrylates, allyl ethers, and vinyl ethers, and the number average molecular weight of the photocurable resin is 4000 to 10 W.

59. The photocurable resin includes 50 to 90 parts of a first resin and 10 to 50 parts of a second resin, the first resin has a number average molecular weight of 4,000 to 20,000, and the second resin has a number average molecular weight of 4W to 10W; The first resin is selected from at least one of RA3080, RA3081, RA3083, RA3091, 6071, 6175-3, and SD7508; 59. The three-dimensional printer of claim 58, wherein the second resin is selected from at least one of SD1000 and SWA20.

60. 57. The 3D printer of claim 56, wherein the surface treatment is sandblasting, and the roughness Ra of the molding surface (125) after sandblasting is 0.1 μm to 5 μm.

61. 24. The 3D printer of claim 23, further comprising a molding stage (12), the molding stage having a molding surface (125) and a back surface (126) opposite the molding surface (125), the molding stage further comprising a plurality of through holes (124) penetrating the molding surface (125) and the back surface (126), the hole diameters of the through holes (124) gradually increasing from the molding surface to the back surface.

62. A 3D printing method applied to the material supply mechanism of any one of claims 1 to 20, or the material tray assembly of any one of claims 21 to 22, or the 3D printer of any one of claims 23 to 61, wherein the 3D printer includes a drive device, the drive device is connected to the material supply mechanism (14), and the 3D printing method comprises the steps of: Receives supply instructions, Controlling the forward rotation of the driving device (20) based on the supply command to cause the material supply mechanism (14) to output the printing material to the material tray (11); and / or Receives a mixing command, A 3D printing method comprising a step of controlling reverse rotation of the drive device (20) based on the stirring command to stir the printing material in the material supply mechanism (14).

63. The output assembly (300) includes a lock body (342) and a lock member (341), the lock body (342) has a material discharge chamber (3422) and a movable chamber (3421) that communicate with each other, the material discharge chamber (3422) is used to discharge the printing material, the movable chamber (3421) communicates with the material storage chamber (111), and the lock member (341) is movably disposed within the movable chamber (3421); After the step of receiving the supply command and before the step of controlling the forward rotation of the drive device (20), the 3D printing method further comprises: and / or further comprising the step of controlling the movement of the locking member (341) to make the movable chamber (3421) conductive; After the step of receiving the stirring command and before the step of controlling the reverse rotation of the drive device (20), the 3D printing method further comprises:

63. The 3D printing method of claim 62, further comprising the step of controlling movement of the locking member (341) to close the movable chamber (3421).

64. The output assembly (300) includes a material discharge member (310) and an opening / closing member (320), the material discharge member (310) having a material discharge passage (311) communicating with the material storage chamber (111) of the material storage body (110), The step of controlling the forward rotation of the drive device (20) based on the supply command includes: A step of controlling the driving device (20) to rotate forward at an operating speed equal to or higher than a predetermined speed based on the supply command, so that the pressure received by the opening / closing member (320) from the printing material becomes equal to or higher than a predetermined pressure, and opening the material discharge passage (311); and / or After receiving the stirring command, the 3D printing method includes: The 3D printing method described in claim 62, further comprising a step of controlling the drive device (20) to rotate forward at an operating speed less than the predetermined speed based on the stirring command, thereby making the pressure received by the opening / closing member (320) from the printing material less than the predetermined pressure, and closing the material discharge passage (311).

65. The 3D printer further includes a molding stage (12), and the 3D printing method further comprises: the 3D printer performs light-curing 3D printing to mold the printing material into a three-dimensional article (1000) at the molding stage (12); performing post-processing on the three-dimensional article (1000); and separating the three-dimensional article (1000) and the forming stage (12), 63. The 3D printing method of claim 62, wherein the molded stage (12) is a single-use disposable item.

66. 3D printing method according to claim 65, characterized in that the step of performing post-processing on the three-dimensional article (1000) is prior to the step of separating the three-dimensional article (1000) and the molding stage (12).

67. The 3D printer performs light-curing 3D printing to mold the printing material into a three-dimensional object (1000) at the molding stage (12), the 3D printer performs light-curing 3D printing to mold a support structure (25) in the molding stage (12) using the printing material, and to mold the three-dimensional article (1000) on the support structure (25); The step of separating the three-dimensional article (1000) and the molding stage (12) comprises:

66. The 3D printing method of claim 65, comprising breaking the support structure (25) to separate the three-dimensional article (1000) and the molding stage (12) and leaving at least a portion of the support structure (25) in the molding stage (12).

68. 66. The 3D printing method of claim 65, wherein the molding stage (12) is a one-piece molded plastic part, and the molding stage (12) is subjected to at least one surface treatment of texturing, electric discharge machining, sandblasting, electroplating, oil spraying, silk printing, laser engraving, water transfer printing, embossing, mechanical engraving, film bonding, chemical etching, and hairline finishing.

69. A 3D printing method applied to a 3D printer including the material supply mechanism according to claim 19, wherein the 3D printer further includes a liquid level detection mechanism, and the 3D printing method includes: receiving a signal from the liquid level detection mechanism indicating that the level of the printing material in the material tray (11) is lower than a predetermined level; controlling the rotation of the transport member (120) and controlling the output assembly (300) to deliver the printing material from the material storage chamber (111) to the material tray (11); receiving a signal from the liquid level detection mechanism indicating that the liquid level of the printing material in the material tray (11) is equal to or higher than the predetermined liquid level; controlling the output assembly (300) to stop delivering the printing material from the material storage chamber (111) to the material tray (11).

70. A 3D printing method applied to a 3D printer including the material supply mechanism according to claim 20, comprising: Receives supply instructions, a step of controlling the rotation of the conveying member (120) based on the supply command, so that the pressure applied by the printing material to the opening / closing member (320) is equal to or greater than a predetermined pressure, so that the opening / closing member (320) opens the material storage passage (311), thereby leading the printing material to the material tray (11); and / or Receives a mixing command, A 3D printing method comprising a step of controlling the rotation of the conveying member (120) based on the supply command so that the pressure applied by the printing material to the opening / closing member (320) is less than the set pressure, thereby causing the opening / closing member (320) to close the material storage passage (311), thereby stirring the printing material.

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