A light-cured 3D printing device

Abstract

The utility model discloses a kind of photocuring 3D printing equipment, including the liquid photosensitive resin containing tank, the light transmission plate is provided in the tank bottom;Moulding platform for forming 3D printing piece is provided in the tank assembly upper portion;Lifting mechanism is used to drive relative motion of moulding platform and tank;DLP projection system is located below tank, and DLP projection system includes projection lens module, and sliding module that the projection lens module is driven linearly moves in horizontal plane.This utility model photocuring 3D printing equipment adopts mobile DLP projection technology, and projection lens module is driven linearly moved in horizontal plane by sliding module, can realize large area photocuring 3D printing, while guaranteeing the printing precision of DLP projection system itself, make the printing precision of entire product improve, in addition, the utility model projection lens module has larger optical power density, guarantee the high efficiency of mobile projection.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing, and in particular to a photopolymerization 3D printing device. Background Technology

[0002] 3D printing technology is a type of rapid prototyping technology, also known as additive manufacturing. 3D printing is a technology that constructs objects by printing layer by layer based on digital model files.

[0003] Photopolymer 3D printing technology is a branch of 3D printing. DLP projection photopolymerization is one method of photopolymer 3D printing technology. DLP is an abbreviation for "Digital Light Processing," which means that the image signal is first digitally processed and then projected as light. Current DLP projection photopolymerization is generally static DLP projection technology, where the DLP projector is fixed on a base and does not move. During each layer exposure, the corresponding image is projected, and the exposure time is maintained to complete the curing of each layer. To ensure the accuracy of the projected image, static DLP projection photopolymerization has a limited projection area, thus failing to meet the demands for increased printing capacity and efficiency. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a photopolymerization 3D printing device that enables large-format photopolymerization 3D printing while maintaining printing accuracy, thereby meeting the demands for increased printing capacity and efficiency.

[0005] To achieve the above-mentioned objectives, this utility model provides a photopolymerization 3D printing device, which further includes: A material tank assembly includes a material tank for holding liquid photosensitive resin, and a light-transmitting plate is provided at the bottom of the material tank; The molding platform, located above the material trough assembly, is used to mold 3D printed parts; A lifting mechanism is used to drive the relative movement of the forming platform and the material trough; The DLP projection system is located below the material tank. The DLP projection system includes a projection lens module and a sliding module that drives the projection lens module to move linearly in a horizontal plane.

[0006] Furthermore, the sliding module includes a guide rail extending along a first direction, a slider sliding along the guide rail, a driver for driving the slider to slide along the guide rail, and the projection lens module is mounted on the slider.

[0007] Furthermore, the sliding module also includes a module base, the guide rail includes a first guide rail and a second guide rail arranged parallel to the module base, and the slider includes a first slider connected to the first guide rail and a second slider connected to the second guide rail.

[0008] Furthermore, the projection lens module includes a projection lens device for projecting images into the material tank, and a mounting plate for mounting the projection lens device, the mounting plate being connected to both the first slider and the second slider.

[0009] Furthermore, the projection lens device includes a light source, a DMD chip, and an optical lens, the projection area of ​​which covers the width of the material trough.

[0010] Furthermore, the lifting mechanism includes a first transmission module and a second transmission module that operate independently. The forming platform is connected to the first transmission module, and the material trough is connected to the second transmission module. The first transmission module is used to drive the forming platform to lift, and the second transmission module is used to drive the material trough to lift. The first transmission module and the second transmission module can be selected as a screw drive module or a linear motor module.

[0011] Furthermore, the lifting mechanism includes at least one set of transmission modules, the forming platform is connected to the transmission modules, and the transmission modules are used to drive the forming platform to lift. The transmission modules can be selected as lead screw transmission modules or linear motor modules.

[0012] Furthermore, the transmission module is a lead screw transmission module, and the lifting mechanism also includes a connecting mechanism driven by the lead screw transmission module for lifting. The forming platform is connected to the connecting mechanism, and the connecting mechanism is provided with an adjustment mechanism for adjusting the tilt of the forming platform.

[0013] Furthermore, the lifting mechanism includes a base plate, on which a pair of lead screw transmission modules are disposed, each of the lead screw transmission modules including a lead screw extending in a vertical direction and a slide block slidably connected to the lead screw; The connecting mechanism includes a connecting seat mounted on the slide, a connecting component connected to the connecting seat, and the forming platform being detachably mounted on the connecting component.

[0014] Furthermore, the connecting assembly includes a first connecting plate group, a second connecting plate, a third connecting plate, and a fourth connecting plate arranged sequentially from top to bottom; The first connecting plate group is connected to the connecting seat, the upper side of the second connecting plate is connected to the first connecting plate group, and two fourth connecting plates spaced apart are simultaneously connected to the lower side of each third connecting plate. The arrangement direction of the third connecting plates is perpendicular to the arrangement direction of the fourth connecting plates. The forming platform is installed on the lower side of the two fourth connecting plates. The adjusting mechanism includes threaded adjusting holes provided at each corner of the second connecting plate, and threaded adjusting members passing through the threaded adjusting holes and abutting against the upper end face of the third connecting plate.

[0015] Furthermore, the lead screw drive module includes a lead screw mounting base mounted on the substrate and a protective cover mounted on the lead screw mounting base; the lead screw is mounted on the lead screw mounting base, and the protective cover is used to shield the lead screw.

[0016] Furthermore, the light-transmitting plate is a light-transmitting glass base plate, and the material tank assembly also includes a release film disposed on the upper side of the glass base plate, with a gap between the release film and the glass base plate.

[0017] This utility model discloses a photopolymerization 3D printing device, including a material tank for holding liquid photosensitive resin, with a light-transmitting plate at the bottom of the material tank; a forming platform for forming 3D printed parts is provided above the material tank assembly; a DLP projection system is located below the material tank, the DLP projection system including a projection lens module and a sliding module for driving the projection lens module to move linearly in a horizontal plane; a controller links and controls the sliding module, the projection lens module, and the lifting mechanism. This utility model's photopolymerization 3D printing device adopts mobile DLP projection technology, driving the projection lens module to move linearly in a horizontal plane via the sliding module, enabling large-format photopolymerization 3D printing. While ensuring the printing accuracy of the DLP projection system itself, it improves the printing accuracy of the entire product. Furthermore, the projection lens module of this utility model has a high light power density, ensuring high efficiency of mobile projection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a photopolymerization 3D printing device in a specific embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view of point B in the middle; Figure 4 for Figure 1 A schematic diagram of a photopolymer 3D printing device without a protective cover installed. Figure 5 for Figure 4 Enlarged view of point C in the middle; Figure 6 This is a schematic diagram of the structure of a DLP projection system in a specific embodiment of the present invention; Figure 7 for Figure 6 Enlarged view of point D; Figure 8 This is a schematic diagram of the adjustment of the threaded adjustment component. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below in conjunction with specific embodiments. Preferred embodiments of this utility model are given in the specific embodiments. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0020] The terms "optional" and similar expressions used in this invention refer to embodiments of the invention that may provide certain beneficial effects under certain circumstances. However, other embodiments may also be optional in the same or other circumstances. Furthermore, the description of one or more optional embodiments does not imply that other embodiments are unavailable, nor is it intended to exclude other embodiments from the scope of this invention.

[0021] This utility model provides a photopolymerization 3D printing device, referenced... Figures 1 to 7 As shown, the photopolymer 3D printing equipment includes a base 1, a material tank assembly 2, a forming platform 3, a lifting mechanism 4, and a DLP projection system mounted on the base 1. The material tank assembly 2 includes a material tank 21 containing liquid photosensitive resin, with a light-transmitting plate at the bottom of the material tank 21. Specifically, the light-transmitting plate can be a light-transmitting glass base plate. The material tank assembly 2 also includes a mounting structure for mounting the material tank 21 on the base 1. The forming platform 3 for forming 3D printed parts is positioned above the material tank assembly 2. The lifting mechanism 4 drives the relative movement of the forming platform 3 and the material tank 21. The DLP projection system is located below the material tank 21 and specifically includes a projection lens module 5 and a sliding module 6. The sliding module 6 drives the projection lens module 5 to move linearly in the horizontal plane.

[0022] During each layer printing in the photopolymer 3D printing equipment, there is a gap between the forming platform 3 and the bottom of the material tank 21 that is the same as the printing thickness. The photosensitive material in the material tank 21 fills the gap. The sliding module 6 drives the projection lens module 5 to move linearly in the horizontal plane. At the same time, the graphic light emitted from the projection lens module 5 shines on the material tank 21 through the light-transmitting plate at the bottom of the material tank 21, causing the photosensitive material (such as photosensitive resin) between the forming platform 3 and the bottom of the material tank 21 to solidify, forming a new solidified layer that adheres to the forming platform 3 or the 3D printed part of the forming platform 3. Then, the lifting mechanism 4 drives the forming platform 3 and the material tank 21 to move relative to each other, causing the new solidified layer to separate from the bottom of the material tank 21. The above steps are repeated until the required product model is completed.

[0023] This utility model's photopolymerization 3D printing equipment adopts mobile DLP projection technology. The projection lens module 5 is driven to move linearly in the horizontal plane by the sliding module 6, which can realize large-format photopolymerization 3D printing. While ensuring the printing accuracy of the DLP projection system itself, it improves the printing accuracy of the entire product. In addition, the projection lens module 5 of this utility model has a large light power density, which ensures the high efficiency of mobile projection.

[0024] Furthermore, the photopolymer 3D printing equipment is equipped with a controller, which is connected to the sliding module 6, the projection lens module 5 and the lifting mechanism 4 by signal, so that the graphic light emitted by the projection lens module 5 matches the graphic of the current layer to be printed, thereby achieving precise printing layer by layer and ensuring the printing accuracy of the molded part.

[0025] Furthermore, the sliding module 6 includes a guide rail extending along a first direction, a slider sliding along the guide rail, and a driver that drives the slider to slide along the guide rail. The first direction can be set according to implementation needs, such as the X direction or the Y direction. The projection lens module 5 is mounted on the slider and slides synchronously along the guide rail with the slider.

[0026] Preferred, Reference Figure 6 and Figure 7 As shown, the sliding module 6 also includes a module base 61, and guide rails including a first guide rail 62 and a second guide rail 63 arranged parallel to the module base 61. The slider includes a first slider 64 connected to the first guide rail 62 and a second slider 65 connected to the second guide rail 63. The projection lens module 5 includes a projection lens device 51 for projecting images into the material tank 21, and a mounting plate 52 for mounting the projection lens device 51. The mounting plate 52 is connected to the first slider 64 and the second slider 65. The controller controls the driver to drive the first slider 64 and the second slider 65 to move synchronously. Using two sliders reduces the load on a single slider and improves the reliability of the connection between the projection lens module 5 and the slider.

[0027] In a preferred embodiment, the sliding module 6 is a linear motor module. The sliding module 6 includes a stator mounted on the module base 61 and a mover 66 mounted on the first slider 64 and the second slider 65. A mounting plate 52 is connected to the mover 66; the connection can be direct or indirect. For example, an indirect connection could involve the mounting plate 52 being connected to a mover seat 67, with the mover 66 fixedly connected to the mover seat 67. A driver precisely controls the movement of the mover 66 relative to the stator, thereby achieving linear movement of the projection lens device 51. Preferably, sensors such as grating rulers can be used to provide real-time feedback on the precise position of the mover 66, forming a closed-loop control to ensure the printing accuracy of the molded parts.

[0028] Furthermore, the projection lens device 51 includes a light source, a DMD chip, and an optical lens. The light source can be a laser light source. The DMD chip is a digital micromirror element. The DMD chip generates the pattern light to be printed on each layer. The pattern light is magnified by a certain magnification by the optical lens and then irradiates the photosensitive resin to be cured in the material tank 21. This invention uses a high-magnification optical lens, and the projection area of ​​the optical lens covers the width of the material tank 21, so that the projection lens device 51 can meet the printing area of ​​the entire layer of the 3D printed part in one stroke, improving the processing efficiency of the photopolymerization 3D printing equipment. One stroke refers to the sliding module 6 driving the projection lens device 51 to move along the guide rail from the starting position to the limit position.

[0029] In this invention, the method by which the lifting mechanism 4 drives the relative movement of the molding platform 3 and the material trough 21 is unrestricted. In one embodiment, the lifting mechanism 4 includes an independently operating first transmission module and a second transmission module. The molding platform 3 is connected to the first transmission module, and the material trough 21 is connected to the second transmission module. The first transmission module drives the molding platform to move up and down, and the second transmission module drives the material trough 21 to move up and down, thereby achieving the relative movement between the molding platform 3 and the material trough 21. The lifting process of the lifting mechanism 4 driving the molding platform 3 and the material trough 21 is as follows: After a new cured layer is attached to the molding platform 3 or the 3D printed part on the molding platform 3, the first transmission module drives the molding platform 3 to move upward, while the second transmission module drives the material trough 21 to move downward from its initial position, so that the new cured layer quickly separates from the bottom of the material trough 21. Then, the first transmission module drives the molding platform 3 to descend, and the second transmission module drives the material trough 21 to move upward back to its initial position, so that there is a gap between the molding platform 3 and the bottom of the material trough 21 that is the same as the thickness of the next layer being printed, and the next layer is printed. In this embodiment, the first transmission module and the second transmission module can be selected from a lead screw drive module, a linear motor module, or other existing transmission modules.

[0030] In another embodiment, the lifting mechanism 4 includes at least one set of transmission modules. These transmission modules can be selected from lead screw drive modules, linear motor modules, or other existing transmission modules. The forming platform 3 is connected to the transmission modules. The material trough 21 remains in a fixed position during the printing process. The transmission modules drive the forming platform to rise and fall, achieving relative movement between the forming platform 3 and the material trough 21. The process of the transmission modules driving the forming platform 3 to rise is as follows: after a new cured layer is attached to the forming platform 3 or the 3D printed part on the forming platform 3, the transmission modules drive the forming platform 3 to rise, separating the new cured layer from the bottom of the material trough 21. Then, the transmission modules drive the forming platform 3 to fall, creating a gap between the forming platform 3 and the bottom of the material trough 21 equal to the thickness of the next printed layer, allowing for the next layer to be printed.

[0031] In a preferred embodiment, the lifting mechanism 4 includes a lead screw drive module 41 and a connecting mechanism 42 driven by the lead screw drive module 41 for lifting. The forming platform 3 is detachably connected to the connecting mechanism 42. The photopolymer 3D printing equipment adopts the pull-up photopolymer 3D printing technology. The lifting mechanism 4 drives the forming platform 3 to move up and down. When release is required, the lifting mechanism 4 drives the forming platform to move upward. When release is completed, the lifting mechanism drives the forming platform to move upward until there is a gap of the next layer thickness between the newly cured layer on the forming platform 3 and the transparent plate of the material tank 21. It can be understood that, in the preferred embodiment, a release film is provided on the upper side of the light-transmitting plate of the material tank 21. Then, the lifting mechanism 4 drives the forming platform 3 to move until there is a gap of the next layer thickness between the newly cured layer on the forming platform 3 and the release film, thereby satisfying the layer-by-layer printing of the photopolymer 3D printing equipment.

[0032] Further reference Figure 4 and Figure 5 As shown, the lifting mechanism 4 includes a base plate 43 mounted on the base 1. A pair of lead screw transmission modules 41 are provided on the base plate 43. Each lead screw transmission module 41 includes a lead screw 411 extending in the vertical direction and a slide block 412 slidably connected to the lead screw 411. Furthermore, the lead screw drive module 41 includes a lead screw mounting base 413 on the mounting base 43, and the lead screw 411 is mounted on the lead screw mounting base 413, as shown in the reference. Figure 1 and Figure 3 As shown, the lead screw drive module 41 also includes a protective cover 414 for shielding the lead screw 411. The protective cover 414 is installed on the lead screw mounting base 413. Since the photosensitive resin is liquid, it is easy to evaporate and splash. The protective cover 414 protects the lead screw 411 and prevents it from being contaminated, thereby ensuring the transmission accuracy of the lead screw drive module 41 during long-term use.

[0033] The connecting mechanism 42 includes a connecting seat 421 mounted on the slide 412, and a connecting component connected to the connecting seat 421. (See reference) Figure 4 and Figure 5 As shown, the connecting seat 421 is provided with a clearance groove 4211 to accommodate the protective cover 414, the molding platform 3 is detachably installed on the connecting assembly, and the connecting assembly is provided with an adjustment mechanism to adjust the tilt of the molding platform 3.

[0034] See Figure 1 and Figure 2 As shown, the connecting assembly includes a first connecting plate group 422, a second connecting plate 423, a third connecting plate 424, and a fourth connecting plate 425 arranged sequentially from top to bottom. Specifically, the first connecting plate group 422 is connected to the connecting seat 421, the upper side of the second connecting plate 423 is connected to the first connecting plate group 422, and the lower side of the second connecting plate 423 is connected to two spaced-apart third connecting plates 424. Two spaced-apart fourth connecting plates 425 are simultaneously connected to the lower side of each third connecting plate 424. The arrangement direction of the third connecting plates 424 and the arrangement direction of the fourth connecting plates 425 are perpendicular to each other. The forming platform 3 is installed on the lower side of the two fourth connecting plates 425. The forming platform 3 is preferably installed in a detachable manner; for example, the forming platform 3 is installed on the fourth connecting plate 425 by a threaded connection, facilitating future replacement and maintenance of the forming platform. In addition, by setting up a connection assembly with multiple connecting plates, the stability of the connection between the forming platform 3 and the lifting mechanism can be ensured, the printing position requirements of the forming platform 3 can be met, the processing thickness of the forming platform 3 can be reduced, and the replacement cost of the forming platform 3 can be reduced.

[0035] In one embodiment, such as Figure 2 and Figure 8 As shown, the adjustment mechanism includes threaded adjustment holes 426 located at each corner of the second connecting plate 423, and threaded adjustment members 428 passing through the threaded adjustment holes 426 and abutting against the upper end face of the third connecting plate 424 near the second connecting plate 423. The threaded adjustment members 428 can be bolts. By adjusting the position of the threaded adjustment members 428 within the threaded adjustment holes 426, the distance between the second connecting plate 423 and the third connecting plate 424 is adjusted, thereby adjusting the inclination of the forming platform 3 so that the forming platform 3 is substantially parallel to the light-transmitting plate of the material tank 2. It can be understood that, in the preferred embodiment, a release film is provided on the upper side of the light-transmitting plate, and the inclination of the forming platform 3 is adjusted to make the forming platform 3 substantially parallel to the release film of the material tank 2.

[0036] In this invention, before printing with the photopolymer 3D printing equipment, the tilt of the forming platform 3 can be adjusted by an adjustment mechanism to make the forming platform 3 basically parallel to the light-transmitting plate or release film of the material tank 2, thereby ensuring the uniform thickness of the printed cured layer. The specific steps are as follows: Assuming all components of the photopolymer 3D printing equipment are properly installed, first pre-tighten all connecting bolts of the second connecting plate 423 and the third connecting plate 424, ensuring that the second connecting plate 423 and the third connecting plate 424 are in an unlocked connection state. Then, the lifting mechanism 3 lowers the forming platform 3 to a position close to the bottom of the material tank 21, for example, close to the light-transmitting plate of the material tank 21. Place paper or other thin objects that can replace paper on the light-transmitting plate of the material tank 21. Adjust the threaded adjustment piece 428 in the threaded adjustment hole 426 to change the gap between the second connecting plate 423 and the third connecting plate 424, thereby adjusting the position of the forming platform 3 accordingly. As the paper is adjusted, the threaded adjusting member 428 is adjusted so that the paper at the position corresponding to the threaded adjusting member 428 is simultaneously pressed by the forming platform 3 and the material groove 2. The paper being pressed means that the forming platform 3 at this position is basically parallel to the material groove 21. It can be understood that when a release film is set in the material groove 2, the paper is pressed by the forming platform 3 and the release film. After the paper at the adjusted position is pressed, the connecting bolt at the corresponding position is locked to keep the threaded adjusting member in the current position. Then, the remaining threaded adjusting members are adjusted in sequence so that the forming platform 3 at the corresponding position of each threaded adjusting member is in the state of pressing the paper. After adjustment, the corresponding connecting bolt is locked to keep the forming platform 3 in the adjusted position unchanged.

[0037] In other embodiments, the adjustment mechanism may also be a shim provided between the second connecting plate 423 and the third connecting plate 424. The tilt of the molding platform 3 can be adjusted by increasing or decreasing the thickness of the shim, so that the molding platform 3 is basically parallel to the light-transmitting plate or release film of the material tank 2, thereby ensuring that the thickness of the printed curing layer is uniform.

[0038] In a preferred embodiment of this utility model, the bottom of the material tank 21 is provided with a light-transmitting glass base plate. The material tank assembly 2 also includes a release film disposed on the upper side of the glass base plate. There is a gap between the release film and the glass base plate, and the gap is filled with air. Specifically, the air can be filled by active air intake or passive air intake. By setting a release film with a gap with the glass base plate, the release force when the cured layer is separated from the bottom of the material tank 21 after each printing is completed is reduced, thereby improving the processing efficiency of the photopolymerization 3D printing equipment.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A photopolymerization 3D printing device, characterized in that, Also includes: A material tank assembly includes a material tank for holding liquid photosensitive resin, and a light-transmitting plate is provided at the bottom of the material tank; The molding platform, located above the material trough assembly, is used to mold 3D printed parts; A lifting mechanism is used to drive the relative movement of the forming platform and the material trough; The DLP projection system is located below the material tank. The DLP projection system includes a projection lens module and a sliding module that drives the projection lens module to move linearly in a horizontal plane.

2. The photopolymerization 3D printing equipment according to claim 1, characterized in that, The sliding module includes a guide rail extending along a first direction, a slider sliding along the guide rail, a driver for driving the slider to slide along the guide rail, and the projection lens module is mounted on the slider.

3. The photopolymerization 3D printing equipment according to claim 2, characterized in that, The sliding module further includes a module base, the guide rail includes a first guide rail and a second guide rail arranged parallel to the module base, and the slider includes a first slider connected to the first guide rail and a second slider connected to the second guide rail.

4. The photopolymerization 3D printing equipment according to claim 3, characterized in that, The projection lens module includes a projection lens device for projecting images into the material tank, and a mounting plate for mounting the projection lens device, the mounting plate being connected to both the first slider and the second slider.

5. The photopolymerization 3D printing equipment according to claim 4, characterized in that, The projection lens device includes a light source, a DMD chip, and an optical lens, the projection area of ​​which covers the width of the material trough.

6. The photopolymerization 3D printing equipment according to claim 1, characterized in that, The lifting mechanism includes a first transmission module and a second transmission module that operate independently. The forming platform is connected to the first transmission module, and the material trough is connected to the second transmission module. The first transmission module is used to drive the forming platform to lift, and the second transmission module is used to drive the material trough to lift. The first transmission module and the second transmission module can be selected as a screw drive module or a linear motor module.

7. The photopolymerization 3D printing equipment according to claim 1, characterized in that, The lifting mechanism includes at least one set of transmission modules, the forming platform is connected to the transmission modules, and the transmission modules are used to drive the forming platform to lift. The transmission modules can be selected as screw drive modules or linear motor modules.

8. The photopolymerization 3D printing equipment according to claim 7, characterized in that, The transmission module is a lead screw transmission module, and the lifting mechanism also includes a connecting mechanism that is driven to lift by the lead screw transmission module. The forming platform is connected to the connecting mechanism, and the connecting mechanism is provided with an adjustment mechanism to adjust the tilt of the forming platform.

9. The photopolymerization 3D printing equipment according to claim 8, characterized in that, The lifting mechanism includes a base plate, on which a pair of lead screw transmission modules are disposed. Each lead screw transmission module includes a lead screw extending in a vertical direction and a slide block slidably connected to the lead screw. The connecting mechanism includes a connecting seat mounted on the slide, a connecting component connected to the connecting seat, and the forming platform being detachably mounted on the connecting component.

10. The photopolymerization 3D printing equipment according to claim 9, characterized in that, The connecting assembly includes a first connecting plate group, a second connecting plate, a third connecting plate, and a fourth connecting plate arranged sequentially from top to bottom; The first connecting plate group is connected to the connecting seat, the upper side of the second connecting plate is connected to the first connecting plate group, the lower side of the second connecting plate is connected to two spaced-apart third connecting plates, and two spaced-apart fourth connecting plates are simultaneously connected to the lower side of each third connecting plate. The arrangement direction of the third connecting plates and the arrangement direction of the fourth connecting plates are perpendicular to each other, and the forming platform is installed on the lower side of the two fourth connecting plates. The adjustment mechanism includes threaded adjustment holes located at each corner of the second connecting plate, and threaded adjustment members passing through the threaded adjustment holes and abutting against the upper surface of the third connecting plate.

11. The photopolymerization 3D printing equipment according to claim 9, characterized in that, The lead screw drive module includes a lead screw mounting base mounted on the substrate and a protective cover mounted on the lead screw mounting base; the lead screw is mounted on the lead screw mounting base, and the protective cover is used to shield the lead screw.

12. The photopolymerization 3D printing equipment according to claim 1, characterized in that, The light-transmitting plate is a light-transmitting glass base plate, and the material tank assembly also includes a release film disposed on the upper side of the glass base plate, with a gap between the release film and the glass base plate.

Images