A desktop UV curing printer

Abstract

To address the shortcomings of existing technologies, this invention provides a desktop UV-curing printer, comprising: a printing component and a protective component. The printing component includes: a printing platform and a control system. A resin tank is located above the printing platform, and an optical component is located below the printing platform. The printing platform includes a scraper mechanism and a vertical displacement mechanism. The scraper mechanism includes: at least one scraper and a scraper driving mechanism, and a heating component for heating the scraper. Several first resin flow holes are formed on the scraper and / or between adjacent scrapers along the scraper's movement direction to allow resin to flow back and forth. The scraper driving mechanism drives the scraper to reciprocate within the resin tank. This invention improves upon the scraper of existing printers, enabling the scrapers to clean the printing platform while simultaneously agitating the resin in a multi-channel manner. Furthermore, by placing the heating mechanism on the scraper, the resin is heated more evenly.

Description

Technical Field

[0001] This utility model relates to the field of additive manufacturing equipment technology, specifically to a desktop photopolymer printer. Background Technology

[0002] Desktop photopolymer printers are compact 3D printing devices based on photopolymerization technology (SLA / DLP / LCD), suitable for home, education, creative design and other scenarios.

[0003] UV-curing printers include bottom-mounted and top-mounted printers. Bottom-mounted printers use a top-down printing method, requiring a larger amount of resin. Therefore, desktop UV-curing printers commonly use the top-mounted type. Currently, desktop UV-curing printers often suffer from the following problems:

[0004] 1. After printing, the printed part needs to be removed from the molding substrate using a spatula. Because pull-up printers require the printed part to adhere to the molding substrate so that the Z-axis mechanism can gradually lift the molding substrate (i.e., the printed part) upwards as the number of printed layers increases, the user needs to be highly skilled when using the spatula to remove the part; otherwise, the printed part can easily be damaged by the spatula.

[0005] 2. Because resin is a liquid with poor heat transfer, current desktop UV curing printers generally use a heating method with fixed thermocouple positions. This easily leads to the problem of excessively high resin temperature around the thermocouple and excessively low resin temperature further away from the thermocouple. This severe temperature unevenness not only affects the resin's flowability but also its formability, resulting in uncontrollable defects in the printed parts. Utility Model Content

[0006] This utility model addresses at least one of the problems existing in the prior art by providing a desktop photopolymerization printer, comprising: a printing component and a protective component, wherein the protective component protects the printing component through a shell, cover, isolation, or other means. The printing component includes: a printing platform and a control system. A resin tank is provided above the printing platform, and an optical component is provided below the corresponding position of the resin tank on the printing platform. A scraper mechanism that reciprocates within the resin tank is provided on the printing platform, and a vertical displacement mechanism is provided outside the resin tank in a vertical direction. The vertical displacement mechanism drives a part-picking mechanism and a molding substrate to reciprocate in a vertical direction, and the molding substrate can be inserted into the resin tank and cover the working surface of the optical component.

[0007] The scraper mechanism includes: at least one scraper, wherein a plurality of first resin flow holes are formed on the scraper and / or between adjacent scrapers along the direction of movement of the scraper to allow resin to flow back and forth, and a heating component for heating the scraper is provided.

[0008] The optical components, scraper mechanism, vertical displacement mechanism, and control system are connected by signals.

[0009] Furthermore, the part-retrieving mechanism includes: a limiting block fixed above the resin tank, and a part-retrieving connecting assembly driven by a vertical displacement mechanism. A ejector plate is provided below the part-retrieving connecting assembly, and the top surface of the ejector plate at least covers a portion of the bottom area of ​​the limiting block. The ejector plate has several downward-facing ejector pins. The molding substrate is disposed below the ejector plate and has ejector pin through holes, the number and position of which at least cover the ejector pins.

[0010] The molding substrate has guide posts on the side facing the ejector plate, and the ejector plate has guide post holes at corresponding positions to match the guide posts. The guide posts pass through the guide post holes and are fixedly or detachably fixed to the bottom of the part removal connection assembly.

[0011] A spring is provided between the top surface of the molding substrate and the bottom surface of the ejector plate.

[0012] Furthermore, the ejector plate has several first threaded holes along the vertical direction, and the top of the ejector pin has a first thread that matches the first threaded holes. The ejector pin is screwed and fastened to the first threaded holes through the first thread.

[0013] Furthermore, the bottom of the part-retrieving connection assembly is provided with a second threaded hole, the guide post is provided with a third threaded hole in the vertical direction, and the first screw is provided with a second thread and a third thread corresponding to the second threaded hole and the third threaded hole, respectively. The first screw is screwed and fastened to the second threaded hole through the second thread and to the third threaded hole through the third thread, thereby making the guide post detachably and fixedly connected to the bottom of the part-retrieving connection assembly.

[0014] Furthermore, the scraper mechanism includes: a scraper fixing plate, at least one scraper, and a scraper driving mechanism.

[0015] The scraper mounting plate is provided with a scraper mounting groove, and the scraper can be detachably installed in the scraper mounting groove. The scraper mounting groove is provided with a matching second resin flow hole at the position of the first resin flow hole of the scraper.

[0016] One end of the scraper fixing plate spans one side wall of the resin tank and is fixed or detachably fixed to the scraper drive mechanism. The other end spans the opposite side wall of the resin tank, and a roller is rotatably mounted on the outer end of the resin tank side wall. The roller moves along the printing platform or a roller groove added to the printing platform that matches the roller.

[0017] The scraper drive mechanism includes: a first drive device connected to the control system signal; the drive output end of the first drive device is fixedly or detachably connected to one end of a first screw that is horizontally or approximately horizontally arranged, and drives the first screw to rotate; the other end of the first screw is rotatably connected to the printing platform. A scraper fixing plate connecting sleeve is screwed onto the first screw, and the scraper fixing plate connecting sleeve is fixedly or detachably fixedly connected to the scraper fixing plate.

[0018] Furthermore, the inner side of the scraper mounting groove is in contact with the scraper through a heat insulation layer.

[0019] The scraper is provided with a first mounting screw hole, and the scraper mounting groove of the scraper fixing plate is provided with a second mounting screw hole at the corresponding location of the first mounting screw hole. The first fixing screw is screwed and tightened to the first mounting screw hole and the second mounting screw hole respectively, so that the scraper can be detachably fixed in the scraper mounting groove.

[0020] The scraper fixing plate has a third mounting screw hole on the side facing the scraper fixing plate connecting sleeve, and the scraper fixing plate connecting sleeve has a fourth mounting screw hole at the corresponding position. The second fixing screw is screwed into the third mounting screw hole and the fourth mounting screw hole respectively, so that the scraper fixing plate and the scraper fixing plate connecting sleeve are detachably and fixedly connected.

[0021] Furthermore, the heating component is a thermocouple. The scraper has heating holes, and the scraper mounting groove has wiring holes at corresponding positions of the heating holes. The heating portion of the heating component is inserted into the heating holes, and the control wire passes through the wiring holes to connect to the control system signal.

[0022] Furthermore, the vertical displacement mechanism includes: a limiting guide rail fixed on the printing platform, located outside the resin tank and arranged vertically; a guide rail clip slidably engages with the limiting guide rail, and the guide rail clip is fixedly connected to the connecting platform. A second driving device is fixedly connected to the top of the limiting guide rail. The second driving device is signal-connected to the control system, and its drive output end is downwardly positioned and fixed or detachably fixed to one end of a second screw. The other end of the second screw is rotatably connected to the support platform at the bottom of the limiting guide rail and rotates under the drive of the second driving device. The connecting platform has a fourth threaded hole at a position corresponding to the second screw, for screwing into the second screw.

[0023] Furthermore, a connecting post is provided at the position of the connecting platform opposite to the second screw, and a torsion fixing mechanism is provided on the connecting post. The end of the part-retrieving mechanism facing the connecting platform has a connecting post groove that matches the connecting post, and a snap-fit ​​groove corresponding to the torsion fixing mechanism is provided at the corresponding position of the torsion fixing mechanism.

[0024] Furthermore, the printing assembly also includes a resin feeding and unloading mechanism. The resin feeding and unloading mechanism includes a first resin connecting pipe, one end of which is connected to the bottom of one side of the resin tank. The other end of the first resin connecting pipe is connected to one inlet of a bidirectional pump via a first buffer bottle. The other inlet of the bidirectional pump is connected to a resin storage mechanism detachably and fixedly disposed outside the protective assembly via a second resin connecting pipe.

[0025] Furthermore, the printing assembly also includes a dual-light monitoring camera. The camera end of the dual-light monitoring camera faces the space inside the resin tank, and its signal output end is connected to the control system.

[0026] Furthermore, the printing assembly also includes a filtering mechanism. The filtering mechanism includes a fan and an air duct that directs airflow from the resin tank to the filter bag. The filter bag includes a filter bag protective shell that is fixedly or detachably fixed to the protective assembly or the printing assembly, and the air duct connects the fan and the interior of the filter bag protective shell. The filter bag is detachably fixed inside the filter bag protective shell.

[0027] This utility model has at least one of the following advantages:

[0028] 1. This utility model has a compact structure that meets the requirements for use with desktop printers.

[0029] 2. This invention improves upon the existing printer's scraper, enabling it to clean the printing platform while simultaneously agitating the resin through multiple channels. This achieves resin mixing, resulting in uniform temperature across all resin zones. Furthermore, it prevents excessive resin overflow caused by large fluctuations generated by the scraper when there is a large amount of resin.

[0030] 3. This utility model sets the heating mechanism on the scraper, which can heat the resin during the scraper's movement according to a preset method. At the same time, the resin is stirred, so that the resin can be heated more evenly. Attached Figure Description

[0031] Figure 1 The diagram shown is a disassembled structural diagram of the desktop UV-curing printer of this utility model.

[0032] Figure 2 The diagram shown is a structural schematic of the printing component of this utility model.

[0033] Figure 3 The diagram shown is a structural schematic of the part-retrieving mechanism of this utility model.

[0034] Figure 4 As shown Figure 3 A magnified structural diagram of part A in the diagram.

[0035] Figure 5The diagram shown is a structural schematic of the guide column of this utility model.

[0036] Figure 6 The diagram shown is a structural schematic of the scraper mechanism of this utility model.

[0037] Figure 7 The diagram shown is a structural schematic of the vertical displacement mechanism of this utility model.

[0038] Figure 8 The diagram shown is a rear view of the desktop UV-curing printer of this invention. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0040] Please note that the terms "above", "below", "left", "right", "top", "bottom", "end", "full", etc. used in this utility model to describe positional relationships do not represent the absolute positional relationship between modules / components / assemblies / parts / components, but rather the relative positional relationship between modules / components / assemblies / parts / components.

[0041] Example 1

[0042] A desktop UV-curing printer, such as Figure 1 As shown, it includes a printing component 2 and a protective component 1. The protective component 1 includes a protective housing 102, a protective cover 103, and a protective isolation panel 101, and protects the printing component 2. The protective cover 103 can rotate relative to the protective housing 102, thereby exposing or closing the printing part of the printing component 2, facilitating printing operations for the user.

[0043] like Figure 2 As shown, the printing assembly 2 includes a printing platform 201 and a control system. A resin tank 202 is positioned above the printing platform 201, and an optical assembly 203 is positioned below the corresponding location of the resin tank 202. A scraper mechanism 206 is provided on the printing platform 201, reciprocating within the resin tank 202. A vertical displacement mechanism 209 is provided outside the resin tank 202 in a vertical direction. The vertical displacement mechanism 209 drives a part-picking mechanism 205 and a molding substrate 204 to reciprocate in a vertical direction, and the molding substrate 204 can be inserted into the resin tank 202 and cover the working surface of the optical assembly 203.

[0044] The scraper mechanism 206 includes one, two, three, or other required number of scrapers 2062, a scraper drive mechanism 2063, and a heating assembly 2064 for heating the scrapers 2062. Several first resin flow holes 20621 are formed on the scrapers 2062 along their movement direction to allow resin to flow back and forth. Alternatively, several first resin flow holes 20621 are formed between adjacent scrapers 2062 along their movement direction to allow resin to flow back and forth. The scraper drive mechanism 2063 drives the scrapers 2062 to reciprocate within the resin tank 202.

[0045] The optical component 203, the scraper mechanism 206, and the vertical displacement mechanism 209 are connected to the control system signal.

[0046] When a traditional scraper-type doctor blade moves, it pushes resin upwards and to the sides of the blade, causing a violent outward flow of resin. When this resin flow collides with the sidewall of the resin tank 202, it creates strong turbulence, which can easily lead to resin splashing. Since the resin used in printing is at a high temperature, splashed resin is not only difficult to clean but also poses a potential risk of burning the user.

[0047] Therefore, this invention improves the scraper structure. A first resin flow hole 20621 is provided on the scraper 2062. When the scraper 2062 reciprocates, resin flows through the first resin flow hole 20621, forming multiple streams of turbulence and mixing that are relatively weaker than those formed by the scraper structure. On the one hand, these multiple streams of turbulent and mixed resin mix and disperse, achieving the purpose of stirring the resin. On the other hand, this turbulence and mixing is weaker than the turbulence formed by the scraper, and the forces between adjacent turbulences cancel each other out, thus preventing the resin from forming a significant and violent flow towards the outside of the resin tank 202. This obviously reduces the possibility of resin splashing during the stirring process.

[0048] In addition, this utility model installs the heating component 2064 on the scraper 2062. When the heating component 2064 is started, the scraper drive mechanism 2063 is started at the same time, so that the heating component 2064 and the scraper 2062 reciprocate to heat the resin. Compared with the traditional fixed-point heating mode, this method heats more evenly, effectively improves the thermal uniformity of the resin, and avoids printing defects caused by uneven heat.

[0049] Example 2

[0050] Based on the desktop photopolymer printer of Example 1, such as Figure 2 and Figure 3As shown, the part-retrieving mechanism 205 includes: a limiting block 2051 fixed above the resin tank 202, and a part-retrieving connecting assembly 2052 driven by a vertical displacement mechanism 209. A ejector plate 2053 is provided below the part-retrieving connecting assembly 2052, and the top surface of the ejector plate 2053 at least covers a portion of the bottom area of ​​the limiting block 2051. The ejector plate 2053 has several downwardly positioned ejector pins 20531. The molding substrate 204 is disposed below the ejector plate 2053 and has ejector pin through holes 2042, the number and position of which at least cover the plurality of ejector pins 20531.

[0051] The molding substrate 204 has a guide post 2041 on the side facing the ejector plate 2053, and the ejector plate 2053 has a guide post hole 20532 at the corresponding position of the guide post 2041. The guide post 2041 passes through the guide post hole 20532 and is fixed or detachably fixed to the bottom of the part picking connection assembly 2052.

[0052] A spring 2054 is provided between the top surface of the molding substrate 204 and the bottom surface of the ejector plate 2053.

[0053] Compared to existing technologies that use a scraper to remove the printed component from the bottom surface of the molding substrate 204, this invention improves the component removal mechanism. During printing, the spring 2054 supports the ejector plate 2053, preventing the ejector pin 20531 from passing through the ejector pin through-hole 2042. At this time, photopolymerization printing can be performed on the bottom surface of the molding substrate 204. The printed component adheres to the bottom surface of the molding substrate 204 and is gradually lifted upwards by the vertical displacement mechanism 209 as printing progresses.

[0054] After the component printing is completed, the vertical displacement mechanism 209 drives the ejector plate 2053 and the molding substrate 204 to continue to rise upwards via the component picking connection assembly 2052. When the ejector plate 2053 moves to the position of the limiting block 2051, it is limited by the limiting block 2051 and cannot continue to rise. At this time, the vertical displacement mechanism 209 drives the molding substrate 204 to continue to rise upwards via the component picking connection assembly 2052, while the ejector plate 2053 stops rising due to limitation. The spring 2054 is compressed, and the ejector pin 20531 is pushed out from the ejector pin through hole 2042, thereby detaching the component from the bottom end face of the molding substrate 204 and completing the component picking. The guide post 2041 can limit the movement of the molding substrate 204 relative to the ejector plate 2053, avoiding possible damage to the ejector pin 20531 caused by misalignment.

[0055] This invention achieves automatic component removal by using several ejector pins 20531 to detach the component from the bottom surface of the forming substrate 204. On the one hand, it eliminates the need for the user to scrape with a scraper, thus reducing the risk of damage to the printed component due to improper scraping. On the other hand, the densely arranged ejector pins 20531 result in smaller forces at individual points and larger total forces when the component is ejected, making it difficult to damage the component during removal and further reducing the possibility of damage to the printed component during the removal process.

[0056] As needed, when printing, the user can follow the printer's prompts and, once the vertical displacement mechanism 209 raises the ejector plate 2053 to a position close to the limit block 2051, install the receiving plate 208 below the printing component, near the printing component. This allows the ejected printing component to fall onto the receiving plate 208, and excess resin can also flow onto the receiving plate 208, making it convenient for the user to pick up the part and also allowing for the recycling of excess resin.

[0057] If necessary, the elastic force of the spring 2054 can be adjusted so that the bottom of the ejector pin 20531 is parallel to or slightly concave to the bottom surface of the molding substrate 204, thereby reducing the excess resin remaining in the ejector pin through hole 2042.

[0058] Example 3

[0059] Based on the desktop photopolymer printer of Example 2, such as Figure 3 and Figure 4 As shown, the ejector plate 2053 has several first threaded holes 20533 along the vertical direction, and the top of the ejector pin 20531 has a first thread that matches the first threaded holes 20533. The ejector pin 20531 is screwed and fastened to the first threaded holes 20533 through the first thread. This arrangement allows for a detachable and fixed connection between the ejector pin 20531 and the ejector plate 2053, and ejector pins 20531 with different positions and different pin diameters can be selected as needed.

[0060] Example 4

[0061] Based on the desktop photopolymer printer of Example 2, such as Figures 3 to 5 As shown, the bottom of the part-retrieving connecting assembly 2052 is provided with a second threaded hole 20521, and the guide post 2041 is provided with a third threaded hole 20411 in the vertical direction. The first screw 2055 is provided with a second thread and a third thread corresponding to the second threaded hole 20521 and the third threaded hole 20411, respectively. The first screw 2055 is screwed and fastened to the second threaded hole 20521 through the second thread, and to the third threaded hole 20411 through the third thread, thereby making the guide post 2041 detachably and fixedly connected to the bottom of the part-retrieving connecting assembly 2052.

[0062] This method allows for a detachable connection between the component picking and connecting assembly 2052, the molding substrate 204, and the ejector plate 2053. This enables the selection of molding substrates 204 and ejector plates 2053 with different densities and thicknesses of ejector pins according to different printed components, and also facilitates user maintenance of the molding substrate 204.

[0063] Example 5

[0064] Based on the desktop photopolymer printer of Example 1, such as Figure 2 and Figure 6 As shown, the scraper mechanism 206 includes: a scraper fixing plate 2061, a scraper 2062, and a scraper driving mechanism 2063. The scraper 2062 is provided with eight first resin flow holes 20621. The number of first resin flow holes 20621 provided on the scraper 2062 can be designed as needed and is not necessarily the eight in this example.

[0065] The scraper fixing plate 2061 is provided with a scraper mounting groove, and the scraper 2062 is detachably mounted in the scraper mounting groove. The scraper mounting groove is provided with a matching second resin flow hole 20612 at the position of the first resin flow hole 20621 of the scraper 2062.

[0066] One end of the scraper fixing plate 2061 extends across one side wall of the resin tank 202 and is fixed or detachably fixed to the scraper driving mechanism 2063. The other end extends across the opposite side wall of the resin tank 202, and a roller 20614 is rotatably mounted on the outer end of the side wall of the resin tank 202. The roller 20614 moves along the printing platform 201 or a roller groove on the printing platform 201 that matches the roller 20614.

[0067] The scraper drive mechanism 2063 includes: a first drive device 20631 connected to the control system signal; the drive output end of the first drive device 20631 is fixedly or detachably connected to one end of a horizontally or nearly horizontally arranged first screw 20632, and drives the first screw 20632 to rotate; the other end of the first screw 20632 is rotatably connected to the printing platform 201. A scraper fixing plate connecting sleeve 20633 is screwed onto the first screw 20632, and the scraper fixing plate connecting sleeve 20633 is fixedly or detachably fixedly connected to the scraper fixing plate 2061.

[0068] At this time, when it is necessary to control the scraper 2062 to perform actions such as stirring, scraping the printing platform 201, and heating, the control system controls the first drive device 20631 to start, thereby causing the first screw 20632 to rotate, which in turn causes the scraper fixing plate connecting sleeve 20633 to reciprocate along the first screw 20632 according to the rotation mode of the first screw 20632. At this time, the scraper fixing plate connecting sleeve 20633 drives the scraper fixing plate 2061 and the scraper 2062 installed in the scraper mounting groove to reciprocate together. The scraper fixing plate 2061 forms a clamping groove 20613 that matches the side wall of the resin tank 202 at the position opposite to the first drive device 20631 through the side wall of the scraper mounting groove and the support plate of the roller 20614. This setting reduces the movement resistance through the setting of the roller 20614. On the other hand, the side wall of the resin tank 202 is clamped by the clamping groove 20613, so that when the scraper fixing plate connecting sleeve 20633 drives the scraper fixing plate 2061 to move, the scraper fixing plate 2061 can drive the scraper 2062 to move back and forth together.

[0069] When a traditional scraper-type doctor blade moves, it pushes resin upwards and to the sides of the blade, causing a violent outward flow of resin. When this resin flow collides with the sidewall of the resin tank 202, it creates strong turbulence, which can easily lead to resin splashing. Since the resin used in printing is at a high temperature, splashed resin is not only difficult to clean but also poses a potential risk of burning the user.

[0070] Therefore, this invention improves the scraper structure. The scraper 2062 has a first resin flow hole 20621, and the scraper fixing plate 2061 has a corresponding second resin flow hole 20612. When the scraper fixing plate 2061 drives the scraper 2062 in a reciprocating motion, resin flows through the first and second resin flow holes 20621 and 20612, forming multiple streams of turbulence and mixing that are relatively weaker than those formed by the scraper structure. On the one hand, these multiple streams of turbulent and mixed resin mix and disperse, achieving the purpose of stirring the resin. On the other hand, this turbulence and mixing is weaker than the turbulence formed by the scraper, and the forces between adjacent turbulence cancel each other out, thus preventing the resin from forming a significant and violent flow towards the outside of the resin tank 202, obviously reducing the possibility of resin splashing during the stirring process.

[0071] Example 6

[0072] Based on the desktop photopolymer printer of Example 5, such as Figure 2 and Figure 6As shown, the inner side of the scraper mounting groove is in contact with the scraper 2062 through a heat insulation layer. This invention allows for convenient replacement and maintenance of the scraper 2062 by detachably mounting it within the scraper mounting groove. Furthermore, the addition of a heat insulation layer between the scraper 2062 and the scraper mounting groove minimizes the transfer of heat from the scraper 2062, heated by the heating component 2064, to the scraper fixing plate 2061. This avoids heat waste and also prevents potential burns to the user due to overheating of the scraper fixing plate 2061.

[0073] The scraper 2062 is provided with a first mounting screw hole 20623, and the scraper mounting groove of the scraper fixing plate 2061 is provided with a second mounting screw hole 20616 at the corresponding location of the first mounting screw hole 20623. The first fixing screw is screwed and fastened to the first mounting screw hole 20623 and the second mounting screw hole 20616 respectively, so that the scraper 2062 can be detachably fixed in the scraper mounting groove.

[0074] This design allows the scraper 2062 and the scraper fixing plate 2061 to be detachably screwed together by the first fixing screw, facilitating subsequent disassembly and maintenance.

[0075] The scraper fixing plate 2061 has a third mounting screw hole 20611 on the side facing the scraper fixing plate connecting sleeve 20633, and the scraper fixing plate connecting sleeve 20633 has a fourth mounting screw hole at a position corresponding to the third mounting screw hole 20611. The second fixing screw 2065 is screwed and tightened into the third mounting screw hole 20611 and the fourth mounting screw hole respectively, so that the scraper fixing plate 2061 and the scraper fixing plate connecting sleeve 20633 are detachably and fixedly connected.

[0076] This configuration allows the scraper fixing plate 2061 and the scraper fixing plate connecting sleeve 20633 to be detachably screwed together by the second fixing screw 2065, facilitating subsequent disassembly and maintenance.

[0077] Example 7

[0078] Based on the desktop photopolymer printer of Example 5, such as Figure 6 As shown, the heating component 2064 is a thermocouple. The scraper 2062 has a heating hole 20622, and the scraper mounting groove has a wiring hole 20615 at the corresponding position of the heating hole 20622. The heating part of the heating component 2064 is inserted into the heating hole 20622, and the control wire passes through the wiring hole 20615 to connect to the control system signal.

[0079] This configuration allows the heating component 2064 to be detachably fixed to the scraper 2062 via a plug-in connection, facilitating subsequent disassembly and maintenance.

[0080] Example 8

[0081] Based on the desktop photopolymer printer of Example 1, such as Figure 2 and Figure 7 As shown, the vertical displacement mechanism 209 includes: a limiting guide rail 2093 fixed on the printing platform 201, located outside the resin tank 202 and arranged vertically; a guide rail clip 2095 slidably engaged on the limiting guide rail 2093; and the guide rail clip 2095 fixedly connected to the connecting platform 2094. A second driving device 2091 is fixedly connected to the top of the limiting guide rail 2093. The second driving device 2091 is signal-connected to the control system, and its drive output end is downwardly positioned and fixed or detachably fixed to one end of a second screw 2092. The other end of the second screw 2092 is rotatably connected to the support platform at the bottom of the limiting guide rail 2093 and rotates under the drive of the second driving device 2091. The connecting platform 2094 has a fourth threaded hole at a position corresponding to the second screw 2092 for screwing into it.

[0082] At this time, when it is necessary to adjust the height of the molding substrate 204, the control system controls the second drive device 2091 to start, thereby driving the second screw 2092 to rotate. At this time, since the guide rail clip 2095 is engaged with the limiting guide rail 2093, the connecting platform 2094 screwed to the second screw 2092 is restricted to move up and down relative to the second screw 2092.

[0083] Example 9

[0084] Based on the desktop photopolymer printer of Example 1, such as Figure 3 and Figure 7 As shown, a connecting post 2097 is provided at the position of the connecting platform 2094 opposite to the second screw 2092, and a torsion fixing mechanism 2096 is provided on the connecting post 2097. The end of the picking mechanism 205 facing the connecting platform 2094 is provided with a connecting post groove that matches the connecting post 2097, and a snap-fit ​​groove corresponding to the torsion fixing mechanism 2096 is provided at the corresponding position.

[0085] According to the above embodiments of the present invention, the connecting groove of the picking mechanism 205 is provided on the picking connection assembly 2052.

[0086] like Figure 7As shown, the torsion fixing mechanism 2096 includes a fixed column, with a handle rotatably connected to the top of the fixed column. An elastic plate is provided at the lower end of the handle. The rotatable connection end between the handle and the fixed column is curved. When the handle is placed horizontally, the distance between the rotation axis of the handle and the fixed column and the bottom end of the current curved surface of the handle is Y1. When the handle is placed vertically, the distance between the rotation axis of the handle and the fixed column and the bottom end of the current curved surface of the handle is Y2, where Y1 > Y2. Thus, when it is necessary to engage or disengage the locking slot from the fixed column, the handle is lifted vertically, causing the elastic plate to move upwards along the curved surface of the handle. This reduces the pressure and friction between the elastic plate and the top surface of the locking slot, as well as between the bottom surface of the locking slot and the top surface of the connecting column 2097, thereby allowing the locking slot to engage or disengage from the fixed column. When the snap-fit ​​groove is engaged with the fixing post and needs to be fixed, press the handle down to the horizontal position, so that the elastic plate moves downward along the curved surface of the handle, increasing the pressure and friction between the elastic plate and the top surface of the snap-fit ​​groove, as well as between the bottom surface of the snap-fit ​​groove and the top surface of the connecting post 2097, thereby fastening the snap-fit ​​groove and the connecting post 2097.

[0087] Example 10

[0088] Based on the desktop photopolymer printer of Example 1, such as Figure 1 and Figure 8 As shown, the printing assembly 2 further includes a resin feeding / unloading mechanism 4. The resin feeding / unloading mechanism 4 includes a first resin connecting pipe 401, one end of which is connected to the bottom of one side of the resin tank 202. The other end of the first resin connecting pipe 401 is connected to one inlet of a bidirectional pump 402 via a first buffer bottle. The other inlet of the bidirectional pump 402 is connected to a resin storage mechanism detachably and fixedly mounted outside the protective assembly 1 via a second resin connecting pipe 403. The control terminal of the bidirectional pump 402 is signal-connected to the control system.

[0089] At this point, if necessary, after printing is complete, the bidirectional pump 402 can be activated to pump the resin in the resin tank 202 to the resin storage mechanism through the first resin connecting pipe 401 and the second resin connecting pipe 403 for resin recovery. Alternatively, a resin storage mechanism containing clean resin can be prepared before printing. During printing, if necessary, the bidirectional pump 402 can be activated to pump the clean resin in the resin storage mechanism to the resin tank 202 through the first resin connecting pipe 401 and the second resin connecting pipe 403 for resin replenishment.

[0090] Example 11

[0091] Based on the desktop photopolymer printer of Example 1, such as Figure 1 As shown, the printing assembly 2 also includes a dual-light monitoring camera 3. The camera end of the dual-light monitoring camera 3 faces the space inside the resin tank 202, and its signal output end is connected to the control system signal.

[0092] The added dual-light monitoring camera 3 can capture real-time infrared images of the resin liquid in the resin tank 202, thereby obtaining the temperature distribution of the resin liquid.

[0093] Example 12

[0094] Based on the desktop photopolymer printer of Example 1, such as Figure 1 and Figure 8 As shown, the printing assembly 2 further includes a filtering mechanism 207. The filtering mechanism 207 includes a fan and an air duct that directs airflow from the resin tank 202 to the filter bag. The filter bag includes a filter bag protective shell that is fixedly or detachably fixed to the protective assembly 1 or the printing assembly 2. The air duct connects the fan and the interior of the filter bag protective shell. The filter bag is detachably fixed inside the filter bag protective shell. The control terminal of the fan is signal-connected to the control system.

[0095] Since the resin used for printing often has an odor, especially since it needs to be heated during printing, this invention addresses this issue by absorbing as much of the odor emitted by the resin as possible into a filter bag for adsorption and filtration. The adsorbent material in the filter bag can be activated carbon. This reduces the odor emitted by the resin into the surrounding environment during the printing process, improving the user experience.

[0096] According to one embodiment of the present invention, such as Figure 8 As shown, a switch door 104 can be added to the protective shell of the filter bag. When the user needs to replace the filter bag, the switch door 104 can be opened, and the switch door 104 can be closed after the filter bag is replaced.

[0097] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A desktop UV-curing printer, comprising: A printing component (2) and a protective component (1), wherein the protective component (1) protects the printing component (2), characterized in that the printing component (2) includes: a printing platform (201) and a control system, wherein a resin tank (202) is provided above the printing platform (201), and an optical component (203) is provided below the corresponding position of the resin tank (202) on the printing platform (201); a scraper mechanism (206) is provided on the printing platform (201) for reciprocating motion within the resin tank (202), and a vertical displacement mechanism (209) is provided outside the resin tank (202) in a vertical direction; the vertical displacement mechanism (209) drives a part-taking mechanism (205) and a molding substrate (204) to reciprocate in a vertical direction, and the molding substrate (204) can be inserted into the resin tank (202) and cover the working surface of the optical component (203); The scraper mechanism (206) includes: at least one scraper (2062), a plurality of first resin flow holes (20621) for resin to flow back and forth are formed on the scraper (2062) and / or between adjacent scrapers (2062) along the movement direction of the scraper (2062), and a heating assembly (2064) for heating the scraper (2062). The optical component (203), the scraper mechanism (206), and the vertical displacement mechanism (209) are connected to the control system signal.

2. The desktop UV-curing printer according to claim 1, characterized in that, The part-removing mechanism (205) includes: a limiting block (2051) fixed above the resin tank (202), and a part-removing connecting assembly (2052) driven by a vertical displacement mechanism (209); a pin plate (2053) is provided below the part-removing connecting assembly (2052), the top surface of the pin plate (2053) at least covering a portion of the bottom area of ​​the limiting block (2051); the pin plate (2053) is provided with several downwardly positioned pins (20531); the molding substrate (204) is provided below the pin plate (2053) and is provided with pin through holes (2042), the number and position of the pin through holes (2042) at least covering the several pins (20531). The molding substrate (204) has a guide post (2041) on the side facing the ejector plate (2053). The ejector plate (2053) has a guide post hole (20532) at the corresponding position of the guide post (2041) that matches the guide post (2041). The guide post (2041) passes through the guide post hole (20532) and is fixed or detachably fixed to the bottom of the part removal connection assembly (2052). A spring (2054) is provided between the top surface of the molded substrate (204) and the bottom surface of the ejector plate (2053).

3. The desktop UV-curing printer according to claim 2, characterized in that, The ejector plate (2053) has several first threaded holes (20533) along the vertical direction, and the top of the ejector (20531) has a first thread that matches the first threaded holes (20533); the ejector (20531) is screwed and fastened to the first threaded holes (20533) through the first thread.

4. The desktop UV-curing printer according to claim 2, characterized in that, The bottom of the part-retrieving connection assembly (2052) is provided with a second threaded hole (20521), and the guide post (2041) is provided with a third threaded hole (20411) in the vertical direction. The first screw (2055) is provided with a second thread and a third thread corresponding to the second threaded hole (20521) and the third threaded hole (20411) respectively. The first screw (2055) is screwed and fastened to the second threaded hole (20521) through the second thread and to the third threaded hole (20411) through the third thread, so that the guide post (2041) is detachably and fixedly connected to the bottom of the part-retrieving connection assembly (2052).

5. The desktop UV-curing printer according to claim 1, characterized in that, The scraper mechanism (206) includes: a scraper fixing plate (2061), at least one scraper (2062), and a scraper driving mechanism (2063). The scraper fixing plate (2061) is provided with a scraper mounting groove, and the scraper (2062) is detachably installed in the scraper mounting groove; the scraper mounting groove is provided with a matching second resin flow hole (20612) at the position of the first resin flow hole (20621) of the scraper (2062). One end of the scraper fixing plate (2061) spans one side wall of the resin tank (202) and is fixed or detachably fixed to the scraper driving mechanism (2063). The other end spans the opposite side wall of the resin tank (202), and a roller (20614) is rotatably installed on the outer end of the side wall of the resin tank (202). The roller (20614) moves along the printing platform (201) or a roller groove matching the roller (20614) added to the printing platform (201). The scraper drive mechanism (2063) includes: a first drive device (20631) connected to the control system signal; the drive output end of the first drive device (20631) is fixedly or detachably connected to one end of a first screw (20632) that is horizontally or approximately horizontally arranged, and drives the first screw (20632) to rotate; the other end of the first screw (20632) is rotatably connected to the printing platform (201); a scraper fixing plate connecting sleeve (20633) is screwed onto the first screw (20632), and the scraper fixing plate connecting sleeve (20633) is fixedly or detachably fixedly connected to the scraper fixing plate (2061).

6. The desktop UV-curing printer according to claim 5, characterized in that, The inner side of the scraper mounting groove is in contact with the scraper (2062) through a heat insulation layer; The scraper (2062) is provided with a first mounting screw hole (20623), and the scraper mounting groove of the scraper fixing plate (2061) is provided with a second mounting screw hole (20616) at the corresponding position of the first mounting screw hole (20623). The first fixing screw is screwed and fastened to the first mounting screw hole (20623) and the second mounting screw hole (20616) respectively, so that the scraper (2062) can be detachably fixed in the scraper mounting groove; The scraper fixing plate (2061) has a third mounting screw hole (20611) on the side facing the scraper fixing plate connecting sleeve (20633), and the scraper fixing plate connecting sleeve (20633) has a fourth mounting screw hole at the corresponding position of the third mounting screw hole (20611); the second fixing screw (2065) is screwed and tightened to the third mounting screw hole (20611) and the fourth mounting screw hole respectively, so that the scraper fixing plate (2061) and the scraper fixing plate connecting sleeve (20633) can be detachably and fixedly connected.

7. The desktop UV-curing printer according to claim 5, characterized in that, The heating component (2064) is a heating coupler; the scraper (2062) is provided with a heating hole (20622), and the scraper mounting groove is provided with a wiring hole (20615) at the corresponding position of the heating hole (20622); the heating part of the heating component (2064) is inserted into the heating hole (20622), and the control line part passes through the wiring hole (20615) and is connected to the control system signal.

8. The desktop UV-curing printer according to claim 1, characterized in that, The vertical displacement mechanism (209) includes: a limiting guide rail (2093) fixed on the printing platform (201) outside the resin tank (202) and arranged vertically; a guide rail clip (2095) is slidably engaged on the limiting guide rail (2093); the guide rail clip (2095) is fixedly connected to the connecting platform (2094); a second driving device (2091) is fixedly connected to the top of the limiting guide rail (2093); the second driving device (2091) is connected to the control system signal; its driving output end is set downward and fixed or detachably fixed to one end of the second screw (2092); the other end of the second screw (2092) is rotatably connected to the support platform at the bottom of the limiting guide rail (2093) and rotates under the drive of the second driving device (2091); the connecting platform (2094) is provided with a fourth threaded hole for screwing into the second screw (2092) at a position corresponding to the second screw (2092).

9. The desktop UV-curing printer according to claim 8, characterized in that, A connecting post (2097) is provided at the position of the connecting platform (2094) opposite to the second screw (2092), and a torsion fixing mechanism (2096) is provided on the connecting post (2097); the part taking mechanism (205) is provided with a connecting post groove that matches the connecting post (2097) at one end facing the connecting platform (2094), and a snap-fit ​​groove that corresponds to the torsion fixing mechanism (2096) is provided at the corresponding position of the torsion fixing mechanism (2096).

10. The desktop UV-curing printer according to claim 1, characterized in that, The printing assembly (2) further includes a resin feeding and unloading mechanism (4); the resin feeding and unloading mechanism (4) includes a first resin connecting pipe (401) with one end connected to the bottom of one side of the resin tank (202), and the other end of the first resin connecting pipe (401) is connected to one port of the bidirectional pump (402) through a first buffer bottle; the other port of the bidirectional pump (402) is connected to a resin storage mechanism that is detachably fixed outside the protective assembly (1) through a second resin connecting pipe (403).

11. The desktop UV-curing printer according to claim 1, characterized in that, The printing assembly (2) further includes a dual-light monitoring camera (3); the camera end of the dual-light monitoring camera (3) faces the space inside the resin tank (202), and the signal output end is connected to the control system signal.

12. The desktop UV-curing printer according to claim 1, characterized in that, The printing assembly (2) further includes a filtering mechanism (207); the filtering mechanism (207) includes a fan and an air duct that directs airflow from the resin tank (202) to the filter bag; the filter bag includes a filter bag protective shell that is fixedly or detachably fixed to the protective assembly (1) or the printing assembly (2), the air duct connecting the fan and the interior of the filter bag protective shell; the filter bag is detachably fixed inside the filter bag protective shell.

Images