Model conveying platform, 3D printer and 3D printing method

Abstract

The invention provides a model conveying platform, a 3D printer and a 3D printing method, a conveying device comprises a hot bed, a conveying device body and an attaching device, the conveying device body comprises a conveying belt, the conveying belt is movably wound and assembled relative to the hot bed, and the attaching device applies attaching force towards the hot bed to the conveying belt or releases attaching force to the conveying belt. The attaching device is used for applying attaching force to the printing area of the conveying belt, so that the printing area of the conveying belt is attached to the bed surface of the hot bed, for example, when part of the belt body area of the conveying belt dynamically passes through the bed surface of the hot bed to form the printing area, the conveying belt is attached to the printing area. The attaching device can apply attaching force to the printing area and even the belt body area near the printing area, so that the printing area of the conveying belt can be flatly attached to the bed surface of the hot bed, the conveying belt is tightly attached to the upper surface of the hot bed, the flatness of the printing area formed on the conveying belt is guaranteed, and the printing efficiency is improved. Abnormal conditions such as edge warping and swelling in the printing process are prevented, and it is guaranteed that the printing effect is not affected.

Description

Technical Field

[0001] The present application relates to the field of 3D (three-dimensional) printing technology, and in particular to a model transmission platform, a 3D printer and a 3D printing method. Background Art

[0002] During the printing process of FDM (Fused Deposition Modeling) 3D printer, the hot bed is located under the printing plate to heat the printing plate. The setting of the hot bed can ensure that the printing plate has better adhesion, prevent warping, reduce distortion during the printing process of the 3D model, thereby improving the printing quality and facilitating demolding.

[0003] The printing plate can generally be detachably mounted on the upper surface of the hot bed using magnetic suction, which facilitates the disassembly of the 3D model after the 3D model is printed. However, in the case of printing multiple 3D models, continuous manual disassembly of the printing plate will undoubtedly affect the printing efficiency of multiple 3D models and require manual supervision. Although a conveyor belt can be used in the relevant technology to replace the printing plate, which can solve the above problems to a certain extent, the conveyor belt cannot fit tightly with the upper surface of the hot bed, and the flatness of the printing area formed on the conveyor belt cannot be guaranteed, which affects the printing effect. Summary of the invention

[0004] Based on this, it is necessary to provide a model transmission platform, a 3D printer and a 3D printing method to address the above-mentioned technical problems.

[0005] The present application provides a model transmission platform for 3D continuous printing, the model transmission platform comprising:

[0006] Heated bed;

[0007] A conveying device, the conveying device comprising a conveyor belt; the conveyor belt is movably wound around the hot bed;

[0008] The attaching device is configured to apply an attaching force to the conveyor belt toward the hot bed or release the attaching force.

[0009] In one embodiment, the conveying device further includes a driving component, which is drivingly connected to the conveyor belt and is used to drive the conveyor belt to rotate relative to the hot bed. The belt area of ​​the conveyor belt passing through the bed surface of the hot bed is configured as a printing area, and the printing area is used to carry the printed model; the attaching device is configured to at least apply an attaching force toward the hot bed to the printing area or release the attaching force.

[0010] In one embodiment, the adhesion force is configured as at least one of magnetic adsorption and negative pressure adsorption.

[0011] In one embodiment, the adhesion force is configured as magnetic adsorption, and the conveyor belt is configured as a magnetic material.

[0012] In one embodiment, the attaching device comprises:

[0013] A plurality of magnetic elements, wherein the plurality of magnetic elements are movably mounted on the hot bed and are used to apply magnetic adsorption force to the conveyor belt;

[0014] The desorption mechanism is connected to the at least one magnetic element and is used to control the at least one magnetic element to move closer to or farther from the hot bed.

[0015] In one of the embodiments, the hot bed is provided with a plurality of magnet receiving slots, and the magnet receiving slots are configured to receive the magnetic elements.

[0016] In one embodiment, it further comprises a moving base, the magnetic element is fixedly mounted on the moving base, and the moving base is movably mounted on the heated bed to drive a plurality of the magnetic elements to move synchronously;

[0017] The desorption mechanism includes an elastic element and a driving device, wherein the elastic element is configured to drive the moving base to approach the hot bed; and the driving device includes an eccentric wheel configured to drive the moving base to move away from the hot bed.

[0018] In one embodiment, the desorption mechanism comprises:

[0019] A guide element is mounted on the hot bed, and the moving base is movably mounted relative to the hot bed through the guide element.

[0020] In one embodiment, the desorption mechanism comprises:

[0021] A supporting body, a plurality of the supporting bodies are assembled on the moving base, and each of the magnetic elements is assembled on the moving base through a matching supporting body.

[0022] In one embodiment, the guide element includes a guide column and a movable body, the guide column is assembled on the hot bed, the movable body is movably assembled on the guide column, and the moving base is fixedly connected to the movable body.

[0023] In one embodiment, the hot bed includes a heating plate and a substrate, wherein the substrate is arranged on the front side of the heating plate for contacting the conveyor belt; the substrate is provided with a first assembly portion and a second assembly portion, and the second assembly portion is configured to form a linear structure along a linear track.

[0024] In one embodiment, the first assembly portion is penetrated by a first connecting member, the second assembly portion is penetrated by a second connecting member, the second connecting member comprises a connected polished rod segment and a threaded segment, and the polished rod segment is used to move within the linear structure.

[0025] In one embodiment, a positioning mechanism is included, which is used to position the unit rotation distance of the conveyor belt relative to the hot bed, and the unit rotation distance is greater than or equal to the maximum length of the hot bed in the conveying direction. The driving assembly cooperates with the positioning mechanism to control the rotation movement of the conveyor belt according to the unit rotation distance.

[0026] In one embodiment, the positioning mechanism comprises:

[0027] A positioning identification part, wherein a plurality of the positioning identification parts are distributed on the conveying belt along the conveying direction of the conveying belt;

[0028] A positioning identifier is used to identify the positioning identification unit.

[0029] The present application provides a 3D printer, and the 3D printer includes the model transfer platform.

[0030] The present application provides a 3D printing method, which comprises the following steps:

[0031] During the single-model printing process, applying an adhesion force to the conveyor belt so that the conveyor belt is closely attached to the hot bed based on the adhesion force;

[0032] After the single model is printed, the attachment force applied to the conveyor belt is released, and the conveyor belt is driven to rotate relative to the hot bed.

[0033] In the above-mentioned model conveying platform, 3D printer and 3D printing method, an attachment device is added to apply an attachment force to at least the printing area of ​​the conveyor belt, so that at least the printing area of ​​the conveyor belt is attached to the bed surface of the hot bed. For example, when a part of the belt body area of ​​the conveyor belt dynamically passes through the bed surface of the hot bed to form the above-mentioned printing area, the attachment device can apply an attachment force to the printing area, or even the belt body area near the printing area, thereby enabling the printing area of ​​the transmission belt to be flatly attached to the bed surface of the hot bed, so that the conveyor belt fits tightly with the upper surface of the hot bed, thereby ensuring the flatness of the printing area formed on the conveyor belt, preventing abnormal conditions such as warping and bulging during the printing process, and ensuring that the printing effect is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of a 3D printer provided in one embodiment of the present application.

[0035] Figure 2 A schematic diagram of the structure of a model transmission platform provided in one embodiment of the present application.

[0036] Figure 3 This is a schematic diagram of the assembly structure of a hot bed and an attaching device provided in one embodiment of the present application.

[0037] Figure 4 It is a schematic diagram of the distribution state of the first assembly part and the second assembly part provided in one embodiment of the present application.

[0038] Figure 5 This is an enlarged schematic diagram of a positioning mechanism provided in one embodiment of the present application.

[0039] Figure Number:

[0040] 10. 3D printer;

[0041] 100. Model transmission platform;

[0042] 1000, hot bed; 2000, conveying device; 3000, attaching device; 4000, positioning mechanism;

[0043] 1001, magnet receiving slot; 1100, heating plate; 1200, substrate;

[0044] 1210, first assembly part; 1220, second assembly part; 1201, linear track;

[0045] 2100, driving assembly; 2200, conveyor belt; 2300, device base;

[0046] 2201, unit rotation distance; 2202, transmission area;

[0047] 3100, magnetic attraction mechanism; 3200, desorption mechanism;

[0048] 3110, magnetic element; 3120, moving base; 3121, contact pad; 3122, support body;

[0049] 3210, elastic element; 3220, driving device; 3230, guiding element;

[0050] 3221, power unit; 3222, transmission shaft; 3223, force applying unit; 3224, coupling; 3225, mounting bracket;

[0051] 4100, positioning identification unit; 4200, positioning identifier. DETAILED DESCRIPTION

[0052] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0053] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0054] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0056] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0058] See also Figures 1 to 5 As shown, the present application provides a 3D printer 10, which includes a printing device for outputting a printed model and a model transmission platform 100 for carrying the printed model. The model transmission platform 100 is configured to achieve continuous printing of the 3D printer 10 and improve printing efficiency. Figure 2 As shown, the model transfer platform 100 mentioned above includes a hot bed 1000, a transfer device 2000 and an attaching device 3000. The model transfer platform 100 can be directly or indirectly assembled to the bottom plate of the 3D printer 10, for example, by one or more supporting members, one end of the supporting member is connected to the model transfer platform 100, and the other end of the supporting member is connected to the bottom plate of the 3D printer 10.

[0059] The conveying device 2000 is used to carry and convey the printed model. Figure 2 As shown, the conveying device 2000 includes a driving component 2100, a conveyor belt 2200 and a device base 2300. The conveyor belt 2200 is movably wound and assembled relative to the hot bed 1000. The driving component 2100 is drivingly connected to the conveyor belt 2200. The driving component 2100 can drive the conveyor belt 2200 to rotate along a predetermined conveying direction. Through the rotational movement of the conveyor belt 2200, different belt body areas of the conveyor belt 2200 can dynamically and continuously pass through the bed surface of the hot bed 1000. Therefore, the present application defines that the belt body area of ​​the conveyor belt 2200 passing through the bed surface of the hot bed 1000 is configured as a printing area, and then the printing area is used to carry the printing model.

[0060] It should be noted that the above-mentioned printing area is dynamically changing. During the continuous rotation of the conveyor belt 2200, different belt areas of the conveyor belt 2200 will form the above-mentioned printing area, thereby realizing the operation of the printing model and achieving continuous 3D printing.

[0061] The hot bed 1000 can be square, round, etc. The hot bed 1000 is used to heat the conveyor belt 2200. The heated conveyor belt can increase the adhesion of the first layer during the printing of the 3D model, and prevent abnormal conditions such as warping and bulging during the printing process. In one embodiment, the hot bed 1000 may include a heating plate 1100 and a substrate 1200. The substrate 1200 is disposed on the front of the heating plate 1100 to contact and heat the conveyor belt 2200. The substrate 1200 may be an aluminum substrate 1200 or a copper substrate 1200.

[0062] See also Figure 4 As shown, the hot bed 1000 can be provided with a first assembly part 1210 and a second assembly part 1220. In one embodiment, the substrate 1200 is provided with a first assembly part 1210 and a second assembly part 1220, and the first assembly part 1210 and the second assembly part 1220 are distributed at the edge of the substrate 1200. For example, the plate surface of the substrate 1200 can be limited to be divided into a central area and an annular peripheral area surrounding the central area, wherein the central area and the annular peripheral area are areas roughly divided on the plate surface of the substrate 1200, and are mainly used to indicate the distribution status of the first assembly part 1210 and the second assembly part 1220. Those skilled in the art can determine the proportion, size, shape, etc. of the central area and the annular peripheral area according to actual needs, which is not limited here.

[0063] Continue reading Figure 4 As shown, based on the division of the central area and the annular peripheral area on the substrate 1200, all the first assembly parts 1210 and all the second assembly parts 1220 are distributed in the annular peripheral area around the central area. The first assembly part 1210 is configured in a conventional fixing manner, the purpose of which is to ensure that the position or area of ​​the first assembly part 1210 of the hot bed 1000 is fixed relative to the 3D printer 10, so as to achieve the purpose of fixed assembly. On the basis of the fixed assembly provided by the first assembly part 1210, the second assembly part 1220 is configured to form a linear structure along the linear track 1201. The linear structure of the second assembly part 1220 allows the position or area of ​​the second assembly part 1220 of the hot bed 1000 to move relative to the 3D printer 10 along the linear track 1201, providing the amount of movement of the hot bed 1000 in the thermal expansion state. The provision of the amount of movement can be used to release thermal strain along the linear track 1201, so as to avoid the problem that the hot bed 1000 cannot release thermal strain in the thermal expansion state, resulting in deformation of the hot bed 1000 itself.

[0064] The first assembly part 1210 or the second assembly part 1220 can adopt a variety of fixed and non-fixed connection forms such as threaded connection, snap connection, and slide rail connection. Those skilled in the art can select a suitable connection form according to actual needs. For example, the first assembly part 1210 is configured as an assembly hole, and the second assembly part 1220 is configured as a linear assembly hole formed along the linear track 12011201. The first assembly part 1210 is penetrated by a first connecting piece, and the second assembly part 1220 is penetrated by a second connecting piece. The second connecting piece includes a connected light rod segment and a threaded segment. The light rod segment is used to move in the second assembly part 1220, thereby releasing the thermal strain of the substrate 1200.

[0065] In one embodiment, the first assembly part 1210 is configured as a countersunk hole, and the second assembly part 1220 is configured as a linear countersunk hole. Therefore, the assembly hole of the first assembly part 1210 can be used to fix the substrate 1200 and the 3D printer 10, and the assembly hole or slide rail constructed according to the linear track 1201 can be used to realize the movable assembly relative to the 3D printer 10 in the form of movement or sliding, thereby providing the above-mentioned amount of movement to meet the release of thermal strain under the thermal expansion state.

[0066] The substrate 1200 can be configured as a regular shape such as a square plate, a circular plate or other irregular shapes. For example, when the substrate 1200 is configured as a square plate, the annular peripheral area of ​​the substrate 1200 has four corners, the number of the first assembly parts 1210 is configured as one, and the number of the second assembly parts 1220 is configured as three, and one first assembly part 1210 and three second assembly parts 1220 are distributed at the four corners of the substrate 1200.

[0067] In one embodiment, the substrate 1200 includes two mutually parallel horizontal sides and two mutually parallel vertical sides, the linear trajectories 1201 of the three second assembly parts 1220 are straight line trajectories, the extension line of the linear trajectory 1201 of one of the second assembly parts 1220 passes through the first assembly part 1210, the linear trajectory 1201 of one of the second assembly parts 1220 is parallel to the horizontal side of the substrate 1200, and the linear trajectory 1201 of one of the second assembly parts 1220 is parallel to the vertical side of the substrate 1200.

[0068] The above arrangement can fix the substrate 1200 relative to the 3D printer 10 based on a first assembly part 1210, and the linear track 1201 of the other three second assembly parts 1220 is arranged in the direction of thermal strain after thermal expansion, that is, after the substrate 1200 heats up and expands, it can move in a direction roughly away from the first assembly part 1210, thereby releasing the thermal strain in a direction roughly away from the first assembly part 1210 with the first assembly part 1210 as the center. At this time, the flatness of the hot bed 1000 itself will not change, and will not affect the process of 3D printing the model. After the 3D printing is completed, the hot bed 1000 cools down. During the cooling process, the hot bed 1000 shrinks and deforms, and then shrinks in a direction roughly close to the first assembly part 1210 with the first assembly part 1210 as the center, and the flatness of the hot bed 1000 itself will not change.

[0069] In addition, those skilled in the art can set the arrangement direction of the linear tracks 1201 of the second assembly parts 1220 and the number of the second assembly parts 1220 according to actual needs, thereby specifically designing a thermal strain release scheme according to the actual structure and heating conditions of the substrate 1200, which is not limited here.

[0070] The printing area of ​​the conveyor belt 2200 is used to replace the traditional printing plate to convey the printed 3D model out of the printing area, so as to achieve continuous printing of the 3D printer 10. Figure 2 and Figure 5 As shown, in the present application, a unit rotation distance 2201 can be defined on the conveyor belt 2200 along a predetermined conveying direction, and the unit rotation distance 2201 is a partial distance of the entire rotation length of the conveyor belt 2200. The purpose of the unit rotation distance 2201 is to define the distance that needs to be rotated after the printing model is successfully moved out and a new printing area is formed after a single printing. At this time, the driving component 2100 is connected to the conveyor belt 2200, and can be used to drive the conveyor belt 2200 to rotate relative to the hot bed 1000 according to the unit rotation distance 2201, so that after the last printing is completed, the printing model is moved out of the previous so-called printing area by moving the length of the unit rotation distance 2201, and a new printing area is formed on the hot bed 1000 for the next printing of the printing model.

[0071] In one embodiment, the driving assembly 2100 may be configured to drive the conveyor belt 2200 to rotate relative to the heated bed 1000 according to the unit rotation distance 2201. A positioning mechanism 4000 may be provided to position the unit rotation distance 2201 of the conveyor belt 2200 relative to the heated bed 1000, the unit rotation distance 2201 being greater than or equal to the maximum length of the heated bed 1000 in the conveying direction, and the driving assembly 2100 cooperates with the positioning mechanism 4000 to control the rotation of the conveyor belt 2200 according to the unit rotation distance 2201.

[0072] In one embodiment, the positioning mechanism 4000 may include a positioning identification unit 4100 and a positioning identifier 4200, and the number of the positioning identification units 4100 is configured to be several, and the several positioning identification units 4100 are distributed on the conveying direction of the conveyor belt 2200, and the distance between adjacent positioning identification units 4100 is used to constitute the unit rotation distance 2201, and the positioning identifier 4200 is used to identify the positioning identification unit 4100.

[0073] See also Figure 2 and Figure 5 As shown, a plurality of positioning identification parts 4100 may be distributed on the conveying direction of the conveyor belt 2200, and the distance between adjacent positioning identification parts 4100 is used to constitute a unit rotation distance 2201. The positioning identifier 4200 is used to identify the positioning identification part 4100. When the conveyor belt 2200 rotates, once the positioning identifier 4200 continuously identifies two adjacent positioning identification parts 4100, it can be determined that the distance between the two adjacent positioning identification parts 4100 is a unit rotation distance 2201 traveled by the conveyor belt 2200.

[0074] Both the positioning identification unit 4100 and the positioning identifier 4200 may adopt a variety of structural forms and sensor forms. For example, in one embodiment, the positioning identification unit 4100 may be configured as an identification slot opened on the conveyor belt 2200. In this case, the positioning identifier 4200 is configured to identify the slot. Alternatively, the positioning identifier 4200 is configured to adopt a photoelectric sensor. In this case, the photoelectric sensor can be used to identify the positioning identification unit 4100 in the form of, for example, an identification slot.

[0075] The driving assembly 2100 of the conveying device 2000 may adopt a roller motor, a motor with a chain sprocket, a motor with a belt, a motor directly connected, etc. For example, the driving assembly 2100 may include a driving wheel and a driven wheel. The motor drives the driving wheel to rotate, and the driving wheel drives the driven wheel to rotate through the conveyor belt 2200. At this time, the conveyor belt 2200 is wound between the driving wheel and the driven wheel, and the hot bed 1000 is also located between the driving wheel and the driven wheel. The conveyor belt 2200 performs a rotary motion. At this time, if the direction from the driving wheel to the driven wheel is defined as the predetermined transmission direction, the conveyor belt 2200 can separate the bottom of the printed model from the conveyor belt 2200 at the bend formed at the driven wheel, thereby realizing the automatic separation of the printed model and the conveyor belt 2200. After the printed model is transmitted out of the printing area, the conveyor belt 2200 will re-form a new printing area so that the 3D printer 10 can perform continuous printing in the new printing area.

[0076] In one embodiment, the model conveying platform 100 includes a peeling mechanism, and the printing area of ​​the conveyor belt 2200 has an inlet end and an outlet end formed along the conveying direction. The peeling mechanism is located at the outlet end of the printing area. Therefore, when the printed model is moved out from the outlet end of the conveyor belt 2200, the peeling mechanism can actively apply a peeling force to the printed model relative to the conveyor belt 2200 to separate the printed model, thereby separating the printed model from the printing area of ​​the conveyor belt 2200. The peeling mechanism can adopt a structure such as a scraper that can separate the printed model from the conveyor belt 2200. For example, the scraper is set at the outlet end of the conveyor belt 2200. The printed model can be transported to the outlet end with the rotation of the conveyor belt 2200. Under the dual effects of the bending stress of the conveyor belt 2200 and the scraper, the printed model can automatically fall off.

[0077] The device base 2300 is the assembly basis of the hot bed 1000 and the conveyor belt 2200 on the conveying device 2000, so the device base 2300 can adopt a frame structure, a frame structure, a seat structure, a shell structure and other suitable structures, which are not limited here. At this time, the drive assembly 2100 and the hot bed 1000 can be assembled on the device base 2300, wherein the device base 2300 can define a conveying area 2202, and a cavity and a recess for assembling the hot bed 1000 can be formed in the conveying area 2202, so that the hot bed 1000 can be located in the conveying area 2202, and the conveyor belt 2200 is movably assembled in the conveying area 2202 of the device base 2300, thereby being movably wound and assembled relative to the hot bed 1000.

[0078] For example, the device base 2300 can be formed by two symmetrically arranged frame members, and a conveying area 2202 for winding the conveyor belt 2200, assembling the hot bed 1000 and the conveying mechanism is formed between the two symmetrical frame members. The relative position between the two symmetrically arranged frame members can be maintained by a limiting structure such as a limiting column, thereby enhancing the stability of the overall structure.

[0079] Continue reading Figure 3 As shown, the attaching device 3000 is configured to apply an attaching force toward the hot bed 1000 to at least the printing area of ​​the conveyor belt 2200 or release the attaching force, so that at least the printing area of ​​the conveyor belt 2200 is attached to the bed surface of the hot bed 1000. For example, when a part of the belt body area of ​​the conveyor belt 2200 dynamically passes through the bed surface of the hot bed 1000 to form the above-mentioned printing area, the attaching device 3000 can apply an attaching force to the printing area, or even the belt body area near the printing area, so that the printing area of ​​the transmission belt can be flatly attached to the bed surface of the hot bed 1000, so that the conveyor belt 2200 is closely attached to the upper surface of the hot bed 1000, thereby ensuring the flatness of the printing area formed on the conveyor belt 2200, preventing abnormal conditions such as warping and bulging during the printing process, and ensuring that the printing effect is not affected.

[0080] In one embodiment, the attaching device 3000 may be connected to the hot bed 1000, or may be installed at other positions inside the 3D printer 10, thereby forming a match with the hot bed 1000. Those skilled in the art may select the assembly method of the attaching device 3000 in the 3D printer 10 according to actual needs, which is not limited here. Among them, the attaching force may be configured to adopt magnetic adsorption force, negative pressure adsorption force, etc. For example, the material of the conveyor belt 2200 is configured to adopt a magnetically adsorbable material, in which case the conveyor belt 2200 may be adsorbed by magnetic adsorption force, or a flat surface that can be adsorbed by negative pressure may be formed on the conveyor belt 2200, thereby adsorbing the conveyor belt 2200 by negative pressure adsorption force, which is not limited here.

[0081] Continue reading Figure 3 As shown, when a magnetic adsorption force is used to achieve adsorption of the conveyor belt 2200, in one embodiment, the attaching device 3000 may optionally include a magnetic attraction mechanism 3100 and a desorption mechanism 3200, and the magnetic attraction mechanism 3100 is connected to the hot bed 1000. At this time, the magnetic attraction mechanism 3100 is responsible for applying a magnetic adsorption force to the conveyor belt 2200, for example, applying a magnetic adsorption force to at least the printing area of ​​the conveyor belt 2200, thereby adsorbing the printing area to the bed surface of the hot bed 1000.

[0082] However, although the above-mentioned method of using magnetic adsorption force to adsorb the conveyor belt 2200 can solve the flatness problem of the printing area of ​​the conveyor belt 2200, if the conveyor belt 2200 needs to move rather than be in a static model output state, during the movement of the conveyor belt 2200, due to the existence of magnetic adsorption force, the driving torque of the driving component 2100 such as the driving motor will increase, and there is a risk of high-temperature fire.

[0083] Therefore, the magnetic suction mechanism 3100 is equipped with a desorption mechanism 3200, and the desorption mechanism 3200 is connected to the hot bed 1000. The function of the desorption mechanism 3200 is to weaken or eliminate the magnetic adsorption force applied by the magnetic suction mechanism 3100. Therefore, when the conveyor belt 2200 is in a stationary printing state, the magnetic suction mechanism 3100 can be used to adsorb the printing area of ​​the conveyor belt 2200 to ensure the flatness of the printing area. When the conveyor belt 2200 is in a moving state of transferring 3D models, the desorption mechanism 3200 is responsible for weakening or eliminating the magnetic adsorption force as needed, so that the conveyor belt 2200 can rotate smoothly relative to the hot bed 1000 without being hindered by the magnetic adsorption force.

[0084] The magnetic attraction mechanism 3100 and the desorption mechanism 3200 can provide the magnetic attraction force by electromagnetic means or permanent magnets. For example, the generation and weakening of the magnetic attraction force can be achieved by electromagnetic means. Alternatively, in one embodiment, the magnetic attraction mechanism 3100 includes a plurality of magnetic elements 3110, which are permanent magnets. The plurality of magnetic elements 3110 are movably assembled on the hot bed 1000. The distribution of the plurality of magnetic elements 3110 on the hot bed 1000 can be used to apply a magnetic attraction force to the conveyor belt 2200 in the area based on the distributed magnetic elements 3110. The desorption mechanism 3200 can weaken or eliminate the magnetic attraction force by controlling the magnetic elements 3110 to change their positions, that is, controlling the magnetic elements 3110 to be away from the hot bed 1000 and the conveyor belt 2200 can weaken or eliminate the magnetic attraction force, and controlling the magnetic elements 3110 to be close to the hot bed 1000 and the conveyor belt 2200 can enhance the magnetic attraction force. Therefore, the desorption mechanism 3200 may be configured to be connected to part or all of the magnetic elements 3110 of the magnetic attraction mechanism 3100 , so as to control part or all of the magnetic elements 3110 to move closer to or farther from the heated bed 1000 .

[0085] Continue reading Figure 3As shown, in one embodiment, the magnetic attraction mechanism 3100 may also include a moving base 3120, and the moving base 3120 may move up and down relative to the hot bed 1000, and a plurality of magnetic elements 3110 may be assembled on the moving base 3120 through a support body 3122, thereby being assembled synchronously and movable relative to the hot bed 1000 through the moving base 3120. Therefore, when the moving base 3120 moves relative to the hot bed 1000, the plurality of magnetic elements 3110 may be synchronously driven to move together. In one embodiment, the moving base 3120 may adopt a plate structure, and in this case, the plurality of magnetic elements 3110 may be assembled on one end of the moving base 3120 facing the hot bed 1000. In addition, the moving base 3120 may also adopt other structures such as a seat structure and a shell structure, which are not limited here.

[0086] The support body 3122 can adopt a structure such as a column, a cylinder, or a seat. The number of support bodies 3122 is configured to be the same as the number of magnetic elements 3110, and is used to provide installation support for the magnetic elements 3110. The position corresponds to the magnet receiving slot 1001. Therefore, several support bodies 3122 are assembled on the moving base 3120, and each magnetic element 3110 is assembled on the moving base 3120 through a matching support body 3122.

[0087] Continue reading Figure 3 As shown, the desorption mechanism 3200 may include an elastic element 3210 and a driving device 3220. The elastic element 3210 may be a spring or the like, and is configured to apply elastic force to the moving base, thereby applying elastic force to part or all of the magnetic elements 3110. For example, the elastic element 3210 is assembled on the plate surface of the moving base 3120 that is away from the hot bed 1000, and one end of the elastic element 3210 is connected to the moving base 3120; the other end is fixed relative to the hot bed position and connected to other matching positions of the 3D printer 10. In this way, the moving base 3120 can be elastically assembled relative to other matching positions of the 3D printer 10 through the elastic element 3210, and all the magnetic elements 3110 are driven to move along with the moving base 3120 toward the direction close to the hot bed 1000 by the elastic force formed thereby, so as to achieve adsorption of the conveyor belt 2200.

[0088] At this time, the driving device 3220 is configured to apply a driving force to the magnetic element 3110, thereby overcoming the elastic force applied by the elastic element 3210. When the elastic force of the elastic element 3210 is overcome, the driving device 3220 can drive the magnetic element 3110 to move in a direction away from the hot bed 1000 along with the moving base 3120, and the magnetic adsorption force is weakened or eliminated by controlling the magnetic element 3110 to change its position. The driving device 3220 can use a telescopic mechanism, a connecting rod mechanism, a gear mechanism and other mechanisms to provide the driving force, which is not limited here.

[0089] In one embodiment, the driving device 3220 may include a power unit 3221, a transmission shaft 3222, and a force applying unit 3223. The power unit 3221 is drivingly connected to the transmission shaft 3222 to control the fixed-axis rotation of the transmission shaft 3222. The force applying unit 3223 is eccentrically mounted on the transmission shaft 3222. The force applying unit 3223 is configured to be drivingly contacted with the motion base 3120, thereby driving the motion base 3120 to move toward or away from the heated bed 1000, thereby driving the plurality of magnetic elements 3110 to move toward or away from the heated bed 1000. The power unit 3221 may be a steering gear or a motor.

[0090] Moreover, in one embodiment, the moving base 3120 may be provided with a contact pad 3121, which is made of wear-resistant material, and the force-applying part 3223 is configured to be used for driving contact with the contact pad 3121. The power part 3221 is connected to the transmission shaft 3222 through a coupling 3224, and the coupling 3224 can be used to transmit the torque generated by the power part 3221 to the transmission shaft 3222 and absorb the coaxiality error between the power part 3221 and the transmission shaft 3222. The power part 3221 is provided with a mounting bracket 3225, and the mounting bracket 3225 is configured to fix the relative position relative to the heated bed 1000.

[0091] Among them, Figure 3 As shown, the heated bed 1000 may be provided with a plurality of magnet receiving slots 1001, each of which is configured to receive a magnetic element 3110 at a matching position, and the plurality of magnetic elements 3110 are configured to move into a magnet receiving slot 1001 at a matching position when approaching the heated bed 1000, and to move out of a magnet receiving slot 1001 at a matching position when moving away from the heated bed 1000. For example, the magnet receiving slot 1001 is provided on the back of the heating plate 1100, and the moving base 3120 is movably assembled on the back of the heating plate 1100.

[0092] Moreover, the desorption mechanism 3200 may further include a guide element 3230, the guide element 3230 is mounted on the hot bed 1000, the guide element 3230 forms a guide track along a direction away from the hot bed 1000, and the moving base 3120 is movably mounted on the guide element 3230 along the guide track of the guide element 3230, thereby being movably mounted relative to the hot bed 1000. The guide track can be configured as a straight track, and the guide track is perpendicular to the bed surface of the hot bed 1000. In addition, the guide track can also be configured as a curved track of a predetermined shape, which is not limited here. The guide element 3230 may include a guide column and a movable body, for example, the guide column is a shaft body, the movable body is a bearing, the guide column is mounted on the hot bed 1000, the guide column is used to form a guide track, the movable body is movably mounted on the guide column along the guide track, and the moving base 3120 is connected to the movable body.

[0093] The present application also provides a 3D printing method, which includes the following steps: during the printing process of a single model, applying an adhesion force to the conveyor belt 2200, so that the conveyor belt 2200 is closely attached to the hot bed 1000 based on the adhesion force during the printing process. After the single model is printed, the adhesion force applied to the conveyor belt 2200 is released, and the conveyor belt 2200 is driven to rotate relative to the hot bed 1000. For example, an adhesion force may be applied to at least the printing area of ​​the conveyor belt 2200, so that at least the printing area of ​​the conveyor belt 2200 is attached to the bed surface of the hot bed 1000.

[0094] When a part of the belt body area of ​​the conveyor belt 2200 dynamically passes through the bed surface of the hot bed 1000 to form the above-mentioned printing area, an adhesion force can be applied to the printing area or even the belt body area near the printing area, so that the printing area of ​​the transmission belt can be flatly attached to the bed surface of the hot bed 1000, thereby making the conveyor belt 2200 fit tightly with the upper surface of the hot bed 1000, ensuring the flatness of the printing area formed on the conveyor belt 2200, preventing abnormal situations such as warping and bulging during the printing process, and ensuring that the printing effect is not affected.

[0095] Therefore, when printing multiple models continuously, the conveyor belt 2200 can be controlled to be close to the hot bed 1000 and released from the hot bed 1000 according to needs during the printing of each single model, so that each model can be kept close to the hot bed 1000 during the printing process. After each model is printed, the conveyor belt 2200 can be released from the hot bed 1000 to ensure that the conveyor belt 2200 can smoothly and quickly transport the printed single model, thereby realizing continuous and fast printing of multiple models.

[0096] For example, during the current single model printing process, an adhesion force can be applied to the conveyor belt 2200 so that the conveyor belt 2200 is close to the hot bed 1000. After the current single model is printed, the conveyor belt 2200 is released from the hot bed 1000, thereby ensuring that the conveyor belt 2200 can be driven smoothly and quickly to rotate relative to the hot bed 1000, thereby realizing the transportation of the currently printed single model and preparing for the printing of the next single model, thereby realizing continuous and rapid printing of multiple models.

[0097] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A model transfer platform (100) for 3D continuous printing, characterized in that: The model transmission platform (100) comprises: HotBed(1000); A conveying device (2000), the conveying device (2000) comprising a conveyor belt (2200); the conveyor belt is movably wound around the hot bed; An attaching device (3000), wherein the attaching device (3000) is configured to apply an attaching force to the conveyor belt (2200) toward the hot bed (1000) or release the attaching force.

2. The model transmission platform (100) according to claim 1, characterized in that: The conveying device (2000) further comprises a driving component (2100), wherein the driving component (2100) is drivingly connected to the conveyor belt (2200) and is used to drive the conveyor belt (2200) to rotate relative to the hot bed (1000), and a belt area of ​​the conveyor belt (2200) passing through the bed surface of the hot bed (1000) is configured as a printing area, and the printing area is used to carry a printed model; The attaching device (3000) is configured to at least apply an attaching force toward the hot bed (1000) to the printing area or release the attaching force.

3. The model transmission platform (100) according to claim 1, characterized in that: The adhesion force is configured as at least one of magnetic adsorption and negative pressure adsorption.

4. The model transmission platform (100) according to claim 3, characterized in that: The adhesion force is configured as magnetic adsorption, and the conveyor belt (2200) is configured as a magnetic material.

5. The model transmission platform (100) according to claim 4, characterized in that: The attaching device (3000) comprises: a plurality of magnetic elements (3110), wherein the plurality of magnetic elements (3110) are movably mounted on the hot bed (1000) and are used to apply a magnetic adsorption force to the conveyor belt (2200); The desorption mechanism (3200) is connected to the at least one magnetic element (3110) and is used to control the at least one magnetic element (3110) to move closer to or further away from the hot bed (1000).

6. The model transmission platform (100) according to claim 5, characterized in that: The hot bed (1000) is provided with a plurality of magnet receiving slots (1001), and the magnet receiving slots (1001) are configured to receive the magnetic elements (3110).

7. The model transmission platform (100) according to claim 6, characterized in that: It also includes a moving base (3120), the magnetic element (3110) is fixedly mounted on the moving base (3120), and the moving base (3120) is movably mounted on the heated bed (1000) to drive a plurality of the magnetic elements (3110) to move synchronously; The desorption mechanism (3200) comprises an elastic element (3210) and a driving device (3220), wherein the elastic element (3210) is configured to drive the moving base (3120) to approach the hot bed (1000); and the driving device (3220) comprises an eccentric wheel (3223) configured to drive the moving base (3120) to move away from the hot bed (1000).

8. The model transmission platform (100) according to claim 7, characterized in that: The desorption mechanism (3200) comprises: A guide element (3230), wherein the guide element (3230) is mounted on the heating bed (1000), and the movable base (3120) is movably mounted relative to the heating bed (1000) via the guide element (3230).

9. The model transmission platform (100) according to claim 7, characterized in that: The desorption mechanism (3200) comprises: A support body (3122), a plurality of the support bodies (3122) are assembled on the moving base (3120), and each of the magnetic elements (3110) is assembled on the moving base (3120) via a matching support body (3122).

10. The model transmission platform (100) according to claim 8, characterized in that: The guide element (3230) comprises a guide column and a movable body, the guide column being mounted on the hot bed (1000), the movable body being movably mounted on the guide column, and the moving base (3120) being fixedly connected to the movable body.

11. The model transmission platform (100) according to claim 7, characterized in that: The hot bed (1000) comprises a heating plate (1100) and a base plate (1200); the base plate (1200) is arranged on the front side of the heating plate (1100) and is used to contact the conveyor belt (2200); the base plate (1200) is provided with a first assembly portion (1210) and a second assembly portion (1220); the second assembly portion (1220) is configured to form a linear structure along a linear track (1201).

12. The model transmission platform (100) according to claim 11, characterized in that: The first assembly portion (1210) is provided with a first connecting member, the second assembly portion (1220) is provided with a second connecting member, the second connecting member comprises a connected polished rod segment and a threaded segment, the polished rod segment being used to move within the linear structure.

13. The model transmission platform (100) according to claim 2, characterized in that: The invention comprises a positioning mechanism (4000), wherein the positioning mechanism (4000) is used to position a unit rotation distance (2201) of the rotational movement of the conveyor belt (2200) relative to the heated bed (1000), wherein the unit rotation distance (2201) is greater than or equal to a maximum length of the heated bed (1000) in the conveying direction, and the driving component (2100) cooperates with the positioning mechanism (4000) to control the rotational movement of the conveyor belt (2200) according to the unit rotation distance (2201).

14. The model transmission platform (100) according to claim 13, characterized in that: The positioning mechanism (4000) comprises: A positioning identification unit (4100), wherein a plurality of the positioning identification units (4100) are distributed on the conveyor belt (2200) along the conveying direction of the conveyor belt (2200); A positioning identifier (4200), wherein the positioning identifier (4200) is used to identify the positioning identification unit (4100).

15. A 3D printer (10), characterized in that: The 3D printer (10) comprises a model transfer platform (100) as claimed in any one of claims 1 to 14.

16. A 3D printing method, characterized in that: The 3D printing method comprises the following steps: During a single-model printing process, applying an adhesion force to the conveyor belt (2200), so that the conveyor belt (2200) is closely attached to the hot bed (1000) based on the adhesion force; After the single model is printed, the adhesion force applied to the conveyor belt (2200) is released, and the conveyor belt (2200) is driven to rotate relative to the hot bed (1000).

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