LCD light-cured 3D printer

Abstract

The application provides an LCD photocuring 3D printer, which comprises a rack, an optical assembly, a linear motor, a printing platform and a tray assembly, the printing platform is arranged at the output end of the linear motor, the tray assembly is detachably arranged on the rack, the optical assembly is arranged at the bottom of the tray assembly, the linear motor drives the printing platform to enter the tray assembly, and a tensioning plate assembly is further arranged between the optical assembly and the tray assembly, the tensioning plate assembly is moved upward and abuts against the release film, so that the release film is tightly attached to the tensioning plate assembly, the replaced release film will not be deformed and wrinkled, and the printing material on the release film will not be deformed, so that the printing quality after the release film is replaced is ensured.

Description

Technical Field

[0001] This invention relates to 3D printers, and more particularly to an LCD photopolymerization 3D printer. Background Technology

[0002] Currently, Chinese patent CN222832391U discloses a material tray and a photopolymer 3D printer. The material tray includes: a material tray frame; a release film assembly, which is disposed on the side of the material tray frame facing the upper base plate. The release film assembly includes a release film frame and a release film installed in the release film frame. A first connector passes through the mounting hole and the through hole and is connected to the upper base plate. This allows for the stable installation of the material tray on the upper base plate without the first connector and related fixing structures occupying too much space on the upper base plate outside the release film frame, thereby reducing the overall area and volume of the material tray.

[0003] The aforementioned patent still has shortcomings. The release film has a short lifespan and usually needs to be replaced after 50 hours of use. Replacing the release film in the aforementioned patent requires disassembling the material tank and removing the centrifugal mold frame from the material tank. When installing the release film, it is necessary to ensure that it is taut and flat, otherwise it will easily affect the printing effect. At the same time, it is necessary to ensure that the release film is not damaged. Especially for desktop 3D printers, users are usually 3D printing enthusiasts who have poor experience in replacing release films and are prone to wrinkling the release film, resulting in poor replacement effect and affecting printing accuracy. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide an LCD photopolymerization 3D printer, which has the advantage of better replacement effect.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: an LCD photopolymerization 3D printer, comprising a frame, an optical component, a linear electric cylinder, a printing platform, and a material tray assembly. The printing platform is disposed at the output end of the linear electric cylinder. The material tray assembly is detachably disposed on the frame. The optical component is disposed at the bottom of the material tray assembly. The linear electric cylinder drives the printing platform into the material tray assembly. A tensioning plate assembly is also disposed between the optical component and the material tray assembly. The material tray assembly includes a material tray frame, a release film, and a film mounting frame. The tensioning plate assembly is used to hold the release film against and tension it. A fixing component is disposed inside the film mounting frame. When the printing platform moves to the bottom, it triggers the fixing component to fix or separate the film mounting frame.

[0006] By using the above-mentioned technical means, a tensioning plate assembly is set between the optical component and the material tray assembly. The tensioning plate assembly moves upward and presses against the release film, so that the release film adheres tightly to the tensioning plate assembly. This prevents the replacement release film from deforming or wrinkling, and the printing material will not deform the release film by pressing it, thus ensuring the printing quality after the release film is replaced.

[0007] Preferably, the tensioning plate assembly includes a light-transmitting plate and several linear electric cylinders. The output end of the linear electric cylinder is fixed to the light-transmitting plate and drives it to move up and down. When the light-transmitting plate moves upward and lifts the release film, the release film adheres to the light-transmitting plate and is tensioned.

[0008] Using the above-mentioned technical means, the light-transmitting plate is moved by a linear electric cylinder, thereby achieving contact with or separation from the release film.

[0009] Preferably, the fixing component includes a telescopic top rod and a driving component. A snap-fit ​​hole is provided in the material tray frame, and a snap-fit ​​hole is also provided on the side of the printing platform. The driving component controls the telescopic top rod to move left and right and enter the snap-fit ​​hole or the snap-fit ​​hole. After the telescopic top rod is snapped into the snap-fit ​​hole, the film mounting frame can move upward with the printing platform.

[0010] Using the above-mentioned technical means, the telescopic top rod is moved by the drive component and inserted into the snap-fit ​​hole, thereby ensuring that the film mounting frame can be fixed at the bottom of the material tray frame. By setting the snap-fit ​​hole two on the side of the printing platform, when it is necessary to replace the release film, the telescopic top rod is driven to extend into the snap-fit ​​hole two, so that the film mounting frame moves up with the printing platform. Thus, the film mounting frame can be taken out without removing the material tray frame, which is convenient for replacement.

[0011] Preferably, the driving component includes a second telescopic push rod and a transmission gear. The transmission gear is disposed between the first telescopic push rod and the second telescopic push rod. The second telescopic push rod has an inclined top surface. Both the first and second telescopic push rods mesh with the transmission gear. The fixing assembly also includes a reset component. The tensioning plate assembly is used to drive the reset component to move and drive the second telescopic push rod to move.

[0012] Through the above-mentioned technical means, by cooperating with the transmission gear and the telescopic top rod one and telescopic top rod two, when the telescopic top rod two moves inward, it moves outward. By setting the inclined top surface, when the printing platform presses the telescopic top rod two back, the telescopic top rod one extends into the snap-fit ​​hole two, thus completing the fixation of the film mounting frame and the printing platform.

[0013] Preferably, the reset component includes a reset rod, a first inclined rod, and a second inclined rod. A reset hole is also provided on the inner side wall of the material tray frame. The reset rod and the first inclined rod are slidably disposed in the reset hole. A reset spring is also provided between the reset rod and the first inclined rod. The first inclined rod and the second inclined rod are engaged by an inclined surface. The second inclined rod is fixed to the tensioning plate assembly.

[0014] By using the above-mentioned technical means, by installing the inclined top block 2 on the tension plate assembly, when the tension plate moves upward, the inclined top block 1 drives the reset top rod to abut against the telescopic top rod 2, causing the telescopic top rod 2 to extend and the telescopic top rod 1 to enter the snap-fit ​​hole 1, thereby fixing the material tray frame and the film mounting frame.

[0015] Preferably, the film mounting frame includes an upper mounting frame and a lower mounting frame, a slot is provided between the upper mounting frame and the lower mounting frame, the release film is placed in the slot, and a clamping member is also provided between the upper mounting frame and the lower mounting frame.

[0016] By employing the aforementioned technical means and incorporating slots, the ease of replacement is further enhanced.

[0017] Preferably, the fixing component is mounted on the upper mounting frame, the clamping member includes an elastic locking rod, the bottom of the lower mounting frame is provided with a countersunk hole, a second return spring is also provided between the elastic locking rod and the bottom of the countersunk hole, and the elastic locking rod is fixedly connected to the upper mounting frame.

[0018] By employing the aforementioned technical means and setting up elastic locking rods, the mold mounting frame is ensured to clamp the release film after being pressed down, thus guaranteeing its installation stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment; Figure 2 This is the right view of an embodiment; Figure 3 for Figure 2 AA section view; Figure 4 for Figure 3 Enlarged view of part B; Figure 5 for Figure 4 A structural diagram in another state; Figure 6 This is a structural diagram of the fixed component; Figure 7 This is a partial sectional view of the membrane mounting frame; Figure 8 This is a schematic diagram of the release mold frame.

[0020] Reference numerals: 1. Frame; 2. Optical assembly; 3. Linear electric cylinder one; 4. Printing platform; 5. Material tray assembly; 6. Tensioning plate assembly; 7. Release film; 8. Light-transmitting plate; 9. Linear electric cylinder two; 10. Upper mounting frame; 11. Lower mounting frame; 12. Slot; 13. Clamping component; 14. Elastic locking rod; 15. Countersunk hole; 16. Return spring two; 17. Fixing assembly; 171. Mounting block; 18. Telescopic top rod one; 19. Driving component; 20. Sliding hole one; 21. Snap-fit ​​hole one; 22. Snap-fit ​​hole two; 23. Telescopic top rod two; 24. Transmission gear; 25. Sliding hole two; 26. Sloping top surface; 27. Reset component; 28. Reset top rod; 29. ​​Sloping top block one; 30. Sloping top block two; 31. Reset hole; 32. Reset spring one; 34. Material tray frame. Detailed Implementation

[0021] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and mastered.

[0022] An LCD photopolymer 3D printer includes a frame 1, an optical assembly 2, a linear electric cylinder 3, a printing platform 4, and a material tray assembly 5. The printing platform 4 is located at the output end of the linear electric cylinder 3. The material tray assembly 5 is detachably mounted on the frame 1. The optical assembly 2 is located at the bottom of the material tray assembly 5. The linear electric cylinder 3 drives the printing platform 4 into the material tray assembly 5. A tensioning plate assembly 6 is also provided between the optical assembly 2 and the material tray assembly 5. The material tray assembly 5 includes a material tray frame 34, a release film 7, and a film mounting bracket. The printing platform 4 is driven into the material tray assembly 5 by the optical assembly. A tensioning plate assembly 6 is set between the 2 and the material tray assembly 5. The tensioning plate assembly 6 moves upward and presses against the release film 7, so that the release film 7 is tightly attached to the tensioning plate assembly 6. This prevents the replacement release film 7 from deforming or wrinkling, and the printing material on the release film 7 will not deform it. This ensures the printing quality after the release film 7 is replaced. A fixing component 17 is set inside the film mounting frame. When the printing platform 4 moves to the bottom, the fixing component 17 is triggered and fixes or separates the film mounting frame, so as to quickly remove or install the mold mounting frame.

[0023] The tensioning plate assembly 6 includes a light-transmitting plate 8 and a linear electric cylinder 2 9. The output end of the linear electric cylinder 2 9 is fixed to the light-transmitting plate 8 and drives it to move up and down. The linear electric cylinder 2 9 is set on both sides or the four corners of the light-transmitting plate 8, so as not to affect the illumination of the optical component 2. When the light-transmitting plate 8 moves upward and lifts the release film 7, the release film 7 adheres to the light-transmitting plate 8 and is tensioned, thereby ensuring the parallelism of the release film 7 and increasing the accuracy of 3D printing.

[0024] The membrane mounting frame includes an upper mounting frame 10 and a lower mounting frame 11. A slot 12 is provided between the upper mounting frame 10 and the lower mounting frame 11. The release film 7 is placed in the slot 12. A clamping member 13 is also provided between the upper mounting frame 10 and the lower mounting frame 11. A fixing component 17 is provided on the upper mounting frame 10.

[0025] The clamping component 13 includes an elastic locking rod 14. The bottom of the lower mounting bracket 11 is provided with a countersunk hole 15. A return spring 16 is also provided between the elastic locking rod 14 and the bottom of the countersunk hole 15. The elastic locking rod 14 is fixedly connected to the upper mounting bracket 10. By setting the elastic locking rod 14, the mold mounting bracket is ensured to clamp the release film 7 after being pressed down, thus ensuring its installation stability. At the same time, when the film mounting bracket is lifted, the slot 12 is exposed, making it convenient to replace the release film 7.

[0026] The fixing component 17 includes a mounting block 171, a telescopic top rod 18, and a driving component 19. The mounting block 171 has a sliding hole 20 extending horizontally through it. The telescopic top rod 18 is slidably disposed in the sliding hole 20. The material tray frame 34 has a snap-fit ​​hole 21. The printing platform 4 also has a snap-fit ​​hole 22 on its side. The driving component 19 controls the telescopic top rod 18 to move left and right and enter one of the snap-fit ​​holes 21 or 22. When the telescopic top rod 18 enters the snap-fit ​​hole 21, the film mounting bracket is fixed on the material tray frame 34. After the telescopic top rod 18 is snapped into the snap-fit ​​hole 22, the film mounting bracket can move upward with the printing platform 4, so that the film mounting bracket can be removed without removing the material tray frame 34, which is convenient for replacing the release film 7.

[0027] The driving component 19 includes a telescopic push rod 23 and a transmission gear 24. A sliding hole 25 is transversely provided on the mounting block 171. The telescopic push rod 23 is disposed within the sliding hole 25. The transmission gear 24 is disposed between the telescopic push rod 18 and the telescopic push rod 23. An inclined top surface 26 is provided on the telescopic push rod 23. Both the telescopic push rod 18 and the telescopic push rod 23 mesh with the transmission gear 24. The fixing assembly 17 also includes a reset component 27. The tensioning plate assembly 6 is used to drive the reset component 27 to move and drive... The telescopic top rod 23 moves, and the locking hole 22 is an oblong hole. When the film mounting frame is fixed, the telescopic top rod 18 is in a retracted state relative to one side of the printing platform 4. When the film mounting frame needs to be removed, the printing platform 4 moves downward and directly abuts against the inclined top surface 26 and presses the telescopic top rod 23 into the sliding hole 25. At this time, the telescopic top rod 23 drives the gear to rotate and causes the telescopic top rod 18 to extend into the locking hole 22 and disengage from the locking hole 21. At this time, lifting can lift the entire frame mounting frame.

[0028] The reset component 27 includes a reset rod 28, a first inclined push block 29, and a second inclined push block 30. A reset hole 31 is also provided on the inner wall of the material tray frame 34. The reset rod 28 and the first inclined push block 29 are slidably disposed within the reset hole 31. A reset spring 32 is also provided between the reset rod 28 and the first inclined push block 29. The first inclined push block 29 and the second inclined push block 30 are engaged by an inclined surface. The second inclined push block 30 is fixed to the tension plate assembly 6. When it is necessary to fix the film mounting frame, the printing platform 4 moves downward to press the film mounting frame. The tension plate assembly 6 is pushed upward, causing the second inclined top block 30 to abut against the first inclined top block 29, and the reset top rod 28 to abut against the second telescopic top rod 23. At this time, the first reset spring 32 is in a compressed state. When the printing platform 4 moves upward a short distance, exposing the second sliding hole 25, the first reset spring 32 exerts force to push the reset top rod 28 into the second sliding hole 25, and drives the second telescopic top rod 23 to be exposed. At the same time, it drives the first telescopic top rod 18 to extend into the first snap-fit ​​hole 21. At this time, the frame mounting bracket is fixed, and the light-transmitting plate 8 abuts against the release film 7.

[0029] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. An LCD photopolymerization 3D printer, comprising a frame (1), an optical assembly (2), a linear electric cylinder (3), a printing platform (4), and a material tray assembly (5), wherein the printing platform (4) is disposed at the output end of the linear electric cylinder (3), the material tray assembly (5) is detachably disposed on the frame (1), the optical assembly (2) is disposed at the bottom of the material tray assembly (5), and the linear electric cylinder (3) drives the printing platform (4) into the material tray assembly (5), characterized in that: A tensioning plate assembly (6) is also provided between the optical component (2) and the tray assembly (5). The tray assembly (5) includes a tray frame (34), a release film (7), and a film mounting frame. The tensioning plate assembly (6) is used to hold the release film (7) against it and tension it. A fixing component (17) is provided inside the film mounting frame. When the printing platform (4) moves to the bottom, it triggers the fixing component (17) and fixes or separates the film mounting frame. The tensioning plate assembly (6) includes a light-transmitting plate (8) and several linear electric cylinders (9). The output end of the linear electric cylinders (9) is fixed to the light-transmitting plate (8) and drives it to move up and down. When the light-transmitting plate (8) moves upward and lifts the release film (7), the release film (7) adheres to the light-transmitting plate (8) and is tensioned. The fixing component (17) includes a telescopic top rod (18) and a driving component (19). The tray frame (34) has a snap-fit ​​hole (21) and the printing platform (4) has a snap-fit ​​hole (22) on its side. The driving component (19) controls the telescopic top rod (18) to move left and right and enter the snap-fit ​​hole (21) or the snap-fit ​​hole (22). After the telescopic top rod (18) is snapped into the snap-fit ​​hole (22), the film mounting frame can move upward with the printing platform (4). The driving component (19) includes a telescopic top rod two (23) and a transmission gear (24). The transmission gear (24) is disposed between the telescopic top rod one (18) and the telescopic top rod two (23). The telescopic top rod two (23) is provided with an inclined top surface (26). Both the telescopic top rod one (18) and the telescopic top rod two (23) mesh with the transmission gear (24). The fixing component (17) also includes a reset component (27). The tensioning plate component (6) is used to drive the reset component (27) to move and drive the telescopic top rod two (23) to move. The reset component (27) includes a reset top rod (28), a first inclined top block (29), and a second inclined top block (30). A reset hole (31) is also provided on the inner side wall of the material tray frame (34). The reset top rod (28) and the first inclined top block (29) are slidably disposed in the reset hole (31). A reset spring (32) is also provided between the reset top rod (28) and the first inclined top block (29). The first inclined top block (29) and the second inclined top block (30) are engaged by inclined surfaces. The second inclined top block (30) is fixed to the tensioning plate assembly (6).

2. The LCD photopolymerization 3D printer according to claim 1, characterized in that: The membrane mounting frame includes an upper mounting frame (10) and a lower mounting frame (11). A slot (12) is provided between the upper mounting frame (10) and the lower mounting frame (11). The release film (7) is placed in the slot (12). A clamping member (13) is also provided between the upper mounting frame (10) and the lower mounting frame (11).

3. The LCD photopolymerization 3D printer according to claim 2, characterized in that: The fixing component (17) is mounted on the upper mounting bracket (10), the clamping component (13) includes an elastic locking rod (14), the lower mounting bracket (11) has a countersunk hole (15) at the bottom, and a second return spring (16) is also provided between the elastic locking rod (14) and the bottom of the countersunk hole (15). The elastic locking rod (14) is fixedly connected to the upper mounting bracket (10).

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