A curing grid plate for a light-cured 3D printer

Abstract

The application provides a curing net plate of a light-curing 3D printer, and belongs to the technical field of 3D printing equipment, which comprises a mounting frame, the mounting frame is arranged in a rectangular shape, a ring groove is formed in the upper surface of the mounting frame, the inner wall of the ring groove is communicated with the inner wall of the mounting frame, a printing net plate is mounted on the bottom of the ring groove, the width of the ring groove is the same as the width of the printing net plate, a baffle is fixedly connected to the inner wall of each end of the ring groove, a pressing spring is fixedly connected to the inner wall of one end of the ring groove, the pressing spring is located below the baffle, a pressing plate is fixedly connected to one end of the pressing spring, the upper and lower surfaces of the pressing plate are respectively abutted against the lower surface of the baffle and the bottom of the ring groove, the two ends of the printing net plate are respectively abutted against the pressing plate and the inner wall of the ring groove, and the upper surface of the printing net plate is abutted against the lower surface of the baffle, so that the printing net plate can be conveniently mounted and dismounted by the operator according to the needs.

Description

Technical Field

[0001] The present invention belongs to the technical field of 3D printing equipment, in particular to a curing screen for a light-curing 3D printer. Background Art

[0002] A 3D printer, also known as a three-dimensional printer (3DP), is a machine that uses additive manufacturing technology, or rapid prototyping technology. It uses a digital model file as its foundation and uses adhesive materials such as special wax, powdered metal, or plastic to create three-dimensional objects by printing layer upon layer of adhesive materials. Currently, 3D printers are used to manufacture products. This technology uses a layer-by-layer printing method to construct objects. The principle of a 3D printer is to place data and raw materials into the 3D printer, which then produces the product layer by layer according to a program. Most industrial product manufacturing uses the stereolithography (SLA) method, which uses ultraviolet light to irradiate liquid photosensitive resin, causing a polymerization reaction. This method solidifies layer by layer to create a three-dimensional entity. This method is highly adaptable, has high printing efficiency, and produces high product precision.

[0003] The printing stencil and the mounting frame of the existing 3D printer are directly welded and fixed, so that if the printing stencil is damaged, the operator cannot replace the printing stencil, resulting in waste. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a curing screen for a light-curing 3D printer, which has the feature of facilitating the operator to install and disassemble the printing screen as needed.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A curing screen for a light-curing 3D printer comprises a mounting frame, which is rectangular in shape, with an annular groove provided on the upper surface of the mounting frame, the inner wall of the annular groove being connected to the inner wall of the mounting frame, a printing screen being mounted on the bottom of the annular groove, the width of the annular groove being the same as the width of the printing screen, a baffle being fixedly connected to the inner walls at both ends of the annular groove, a holding spring being fixedly connected to the inner wall at one end of the annular groove, the holding spring being located below the baffle, a holding plate being fixedly connected to one end of the holding spring, the upper surface of the holding plate being in contact with the lower surface of the baffle, the two ends of the printing screen being respectively held in contact with the holding plate and the inner wall of the annular groove, the inner wall of the annular groove being away from the end face of the baffle away from the inner wall of the annular groove to the other end of the annular groove The distance between the inner walls is greater than the length of the printing screen, and the upper surface of the printing screen abuts against the lower surface of the baffle, and a long groove is provided on the baffle, and a long rod is fixedly connected to the upper surface of the clamping plate, and the long rod is slidably connected in the long groove, and a locking nut is threadedly connected to the end of the long rod passing through the long groove, and the locking nut is clamped against the upper surface of the baffle, and a first wedge block is rotatably connected to the lower surface of the baffle, and a second wedge block is rotatably connected to the upper surface of the printing screen, the inclined surface of the first wedge block abuts against the inclined surface of the second wedge block, and a lifting plate is fixedly connected to the end surface of the clamping plate away from the long rod, the lifting plate and the clamping plate are vertically arranged, and the printing screen abuts against the upper surface of the lifting plate.

[0007] Furthermore, a mounting groove is provided on the inner walls on both sides of the annular groove, a top plate is installed in the mounting groove, a through hole is provided on the upper surface of the inner wall at one end of the mounting groove, a push rod is fixedly connected to one end of the top plate, the push rod is slidably connected in the through hole, the top plate is pressed against the lower surface of the printing screen, and a locking member for locking the push rod in the through hole is provided on the upper surface of the mounting frame.

[0008] Furthermore, the locking member includes locking grooves on the inner walls on both sides of the through hole, a locking rod fixedly connected between the inner walls on both sides of the locking groove, a locking wheel rotatably connected to the outer wall of the locking rod, and a torsion spring sleeved on the outer wall of the locking rod. The locking rod and the locking wheel are eccentrically arranged, and the center of the locking wheel is located above the locking rod and between the two locking rods. The outer wall of the locking wheel is pressed against the outer wall of the push rod under the action of the restoring force of the torsion spring. The cross-section of the through hole is rectangular, and the cross-section of the push rod is rectangular.

[0009] Furthermore, a disengagement sleeve is slidably connected to the outer wall of the push rod, a first magnet is fixedly connected to the inner wall of the disengagement sleeve, and a second magnet is fixedly connected to the outer wall of the push rod, and the first magnet and the second magnet are attracted to each other.

[0010] Furthermore, a retaining ring is fixedly connected to the outer wall of the upper end of the push rod, and a guide surface is provided on the outer wall of the lower end of the disengagement sleeve, and the guide surface is provided downward.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. The present invention makes one end of the printing screen plate abut against the holding plate, compresses the holding spring, and clamps the other end of the printing screen plate under the baffle. The long rod slides in the long slot and the locking nut is tightened. This arrangement has a simple structure and is easy to operate, making it convenient for the operator to install and disassemble the printing screen plate as needed.

[0013] 2. The present invention presses the top plate against the lower surface of the printing screen, and the top rod slides in the through hole. The locking wheel presses against the outer wall of the top rod under the action of the restoring force of the torsion spring. The friction between the locking wheel and the outer wall of the top rod prevents the top rod from sliding downward. This arrangement has a simple structure and is easy to operate, thereby improving the stability of the top plate pressed against the lower surface of the printing screen and the stability of the printing screen installed in the annular groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 It is a sectional view of the installation frame of the present invention.

[0016] Figure 3 It is a structural schematic diagram of the installation slot in the present invention.

[0017] In the figure, 1. mounting frame; 2. annular groove; 3. printing screen; 4. baffle; 5. holding spring; 6. holding plate; 7. long groove; 8. long rod; 9. locking nut; 10. first wedge block; 11. second wedge block; 12. lifting plate; 13. mounting groove; 14. top plate; 15. through hole; 16. top rod; 17. locking piece; 18. locking groove; 19. locking rod; 20. locking wheel; 21. torsion spring; 22. release sleeve; 23. first magnet; 24. second magnet; 25. baffle ring; 26. guide surface. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 、 Figure 2 、 Figure 3 As shown, a curing screen for a light-curing 3D printer includes a mounting frame 1, which is rectangular in shape. An annular groove 2 is provided on the upper surface of the mounting frame 1, and the inner wall of the annular groove 2 is connected to the inner wall of the mounting frame 1. A printing screen 3 is installed on the bottom of the annular groove 2.

[0020] like Figure 1 、 Figure 2 、 Figure 3 As shown, the width of the annular groove 2 is the same as the width of the printing screen 3, and the length of the annular groove 2 is greater than the length of the printing screen 3. Two baffles 4 are fixedly connected to the inner walls at both ends of the annular groove 2, and the baffles 4 are spaced apart from the bottom of the annular groove 2. A clamping spring 5 is fixedly connected to the inner wall at one end of the annular groove 2, and the clamping spring 5 is located below the baffle 4. A clamping plate 6 is fixedly connected to one end of the clamping spring 5, and the upper surface of the clamping plate 6 abuts against the lower surface of the baffle 4. The distance from the end surface of the baffle 4 on the inner wall of the annular groove 2 away from the inner wall of the annular groove 2 away from the clamping spring 5 to the inner wall of the other end of the annular groove 2 is greater than the length of the printing screen 3, and the upper surface of the printing screen 3 abuts against the lower surface of the baffle 4.

[0021] like Figure 1 、 Figure 2 、 Figure 3 As shown, in order to facilitate the operator to locate the position of the clamping plate 6 on the baffle 4, a long groove 7 is opened on the baffle 4, and the long groove 7 is arranged along the length direction of the printing screen 3. The long rod 8 is fixedly connected to the upper surface of the clamping plate 6, and the long rod 8 is slidably connected in the long groove 7. A locking nut 9 is threadedly connected to one end of the long rod 8 passing through the long groove 7, and the locking nut 9 is pressed against the upper surface of the baffle 4.

[0022] like Figure 1 、 Figure 2 、 Figure 3 As shown, in order to improve the stability of the printing screen 3 installed on the mounting frame 1, a first wedge block 10 is rotatably connected to the lower surface of the baffle 4, and a second wedge block 11 is rotatably connected to the upper surface of the printing screen 3, and the inclined surface of the first wedge block 10 abuts against the inclined surface of the second wedge block 11.

[0023] like Figure 1 、 Figure 2 、 Figure 3 As shown, in order to further improve the installation and disassembly of the printing screen 3, a lifting plate 12 is fixedly connected to the end face of the clamping plate 6 away from the long rod 8. The lifting plate 12 is arranged vertically to the clamping plate 6, and the printing screen 3 is abutted on the upper surface of the lifting plate 12.

[0024] like Figure 1 、 Figure 2 、 Figure 3 As shown, in order to further improve the installation stability of the printing screen 3, a mounting groove 13 is provided on the inner walls on both sides of the annular groove 2, a top plate 14 is installed in the mounting groove 13, a through hole 15 is provided on the upper surface of the inner wall at one end of the mounting groove 13, a push rod 16 is slidably connected in the through hole 15, the cross-section of the through hole 15 is rectangular, the cross-section of the push rod 16 is rectangular, the lower end of the push rod 16 is fixedly connected to the lower end of the top plate 14, the top plate 14 is pressed against the lower surface of the printing screen 3, and a locking member 17 for locking the push rod 16 in the through hole 15 is provided on the upper surface of the mounting frame 1.

[0025] like Figure 1 、 Figure 2 、 Figure 3 As shown, the locking member 17 includes a locking groove 18, a locking rod 19, a locking wheel 20, and a torsion spring 21. The locking groove 18 is opened on the inner walls on both sides of the through hole 15, and the locking rod 19 is fixedly connected to the inner walls on both sides of the locking groove 18. The locking wheel 20 is rotatably connected to the outer wall of the locking rod 19. The locking wheel 20 and the locking rod 19 are eccentrically arranged. The center of the locking wheel 20 is located above the locking rod 19 and between the two locking rods 19. The torsion spring 21 is sleeved on the outer wall of the locking rod 19. The two ends of the torsion spring 21 are respectively fixedly connected to the outer wall of the locking rod 19 and the outer wall of the locking wheel 20, and are pressed against the outer wall of the push rod 16 under the action of the restoring force of the torsion spring 21.

[0026] like Figure 1 、 Figure 2 、 Figure 3 As shown, in order to facilitate the operator to disengage the locking wheel 20 from the push rod 16, a disengagement sleeve 22 is slidably connected to the outer wall of the push rod 16, a retaining ring 25 is fixedly connected to the upper end face of the push rod 16, a guide surface 26 is provided on the outer wall of the lower end of the disengagement sleeve 22, and the guide surface 26 is opened downward, a first magnet 23 is fixedly connected to the inner wall of the disengagement sleeve 22, and a second magnet 24 is fixedly connected to the outer wall of the push rod 16, and the first magnet 23 and the second magnet 24 are attracted to each other.

[0027] The working principle of the embodiment of the present invention is as follows: one end of the printing stencil 3 is pressed against the pressing plate 6, the pressing spring 5 is compressed, and the other end of the printing stencil 3 is clamped under the baffle 4. The pressing plate 6 is pressed against the end surface of the printing stencil 3 under the action of the restoring force of the pressing spring 5;

[0028] Tighten the lock nut 9;

[0029] Slide the push rod 16 upward, the push rod 16 slides in the through hole 15, the top plate 14 presses against the lower surface of the printing screen 3, and the locking wheel 20 presses against the outer wall of the push rod 16 under the action of the restoring force of the torsion spring 21;

[0030] When the printing screen 3 needs to be disassembled, the disengagement sleeve 22 slides downward, the locking wheel 20 disengages from the top rod 16, the top rod 16 slides downward, and the top plate 14 disengages from the printing screen 3; loosen the locking nut 9, slide the printing screen 3, press the spring 5 to compress, and the printing screen 3 disengages from under the baffle 4.

[0031] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0032] Although this document frequently uses terms such as 1. mounting frame; 2. annular groove; 3. printing screen; 4. baffle; 5. holding spring; 6. holding plate; 7. long groove; 8. long rod; 9. locking nut; 10. first wedge block; 11. second wedge block; 12. lifting plate; 13. mounting groove; 14. top plate; 15. through hole; 16. top rod; 17. locking member; 18. locking groove; 19. locking rod; 20. locking wheel; 21. torsion spring; 22. release sleeve; 23. first magnet; 24. second magnet; 25. baffle ring; 26. guide surface, the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A curing screen for a light-curing 3D printer, characterized in that: The invention comprises a mounting frame (1), the mounting frame (1) is arranged in a rectangular shape, an annular groove (2) is provided on the upper surface of the mounting frame (1), the inner wall of the annular groove (2) is communicated with the inner wall of the mounting frame (1), a printing screen (3) is installed on the bottom of the annular groove (2), the width of the annular groove (2) is the same as the width of the printing screen (3), a baffle (4) is fixedly connected to the inner wall of both ends of the annular groove (2), and a tightening spring ( 5), a pressing spring (5) is located below the baffle (4), and a pressing plate (6) is fixedly connected to one end of the pressing spring (5), and the upper surface of the pressing plate (6) is in contact with the lower surface of the baffle (4). The two ends of the printing screen (3) are respectively pressed against the pressing plate (6) and the inner wall of the annular groove (2). The distance between the end face of the baffle (4) away from the inner wall of the annular groove (2) and the inner wall of the annular groove (2) is greater than the distance between the end face of the baffle (4) away from the inner wall of the annular groove (2) and the inner wall of the other end of the annular groove (2). The length of the plate (3), the upper surface of the printing screen plate (3) is in contact with the lower surface of the baffle (4), a long slot (7) is provided on the baffle (4), a long rod (8) is fixedly connected to the upper surface of the abutting plate (6), the long rod (8) is slidably connected in the long slot (7), a locking nut (9) is threadedly connected to one end of the long rod (8) passing through the long slot (7), the locking nut (9) is in contact with the upper surface of the baffle (4), and the baffle (4) is in contact with the upper surface of the baffle (4). A first wedge block (10) is rotatably connected to the lower surface, and a second wedge block (11) is rotatably connected to the upper surface of the printing screen (3). The inclined surface of the first wedge block (10) abuts against the inclined surface of the second wedge block (11). A lifting plate (12) is fixedly connected to the end surface of the abutting plate (6) away from the long rod (8). The lifting plate (12) and the abutting plate (6) are vertically arranged, and the printing screen (3) abuts against the upper surface of the lifting plate (12).

2. The curing screen of a light-curing 3D printer according to claim 1, characterized in that: A mounting groove (13) is provided on the inner walls on both sides of the annular groove (2), a top plate (14) is installed in the mounting groove (13), a through hole (15) is provided on the upper surface of the inner wall at one end of the mounting groove (13), a top rod (16) is fixedly connected to one end of the top plate (14), the top rod (16) is slidably connected in the through hole (15), the top plate (14) is pressed against the lower surface of the printing screen (3), and a locking member (17) for locking the top rod (16) in the through hole (15) is provided on the upper surface of the mounting frame (1).

3. The curing screen of a light-curing 3D printer according to claim 2, characterized in that: The locking member (17) comprises a locking groove (18) provided on the inner walls on both sides of the through hole (15), a locking rod (19) fixedly connected between the inner walls on both sides of the locking groove (18), a locking wheel (20) rotatably connected to the outer wall of the locking rod (19), and a torsion spring (21) sleeved on the outer wall of the locking rod (19); the locking rod (19) and the locking wheel (20) are eccentrically arranged, the center of the locking wheel (20) is located above the locking rod (19) and between the two locking rods (19); the outer wall of the locking wheel (20) is pressed against the outer wall of the push rod (16) under the action of the restoring force of the torsion spring (21); the cross section of the through hole (15) is rectangular, and the cross section of the push rod (16) is rectangular.

4. The curing screen of a light-curing 3D printer according to claim 3, characterized in that: A disengagement sleeve (22) is slidably connected to the outer wall of the push rod (16), a first magnet (23) is fixedly connected to the inner wall of the disengagement sleeve (22), and a second magnet (24) is fixedly connected to the outer wall of the push rod (16), and the first magnet (23) and the second magnet (24) are attracted to each other.

5. The curing screen of a light-curing 3D printer according to claim 4, characterized in that: A retaining ring (25) is fixedly connected to the outer wall of the upper end of the push rod (16), and a guide surface (26) is provided on the outer wall of the lower end of the disengagement sleeve (22), and the guide surface (26) is provided downward.

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