Photosensitive resin tank

Abstract

The invention provides a photosensitive resin tank, and belongs to the technical field of 3D printing equipment, the photosensitive resin tank comprises a tank body, a spacing plate is fixedly connected between the inner walls of the two sides of the tank body, an inclined plate is fixedly connected to the inner wall of the tank body, and a gap is formed between the lower surface of the spacing plate and the lower end of the inclined plate; a baffle is fixedly connected to the end face of the lower end of the inclined plate and fixedly connected with the inner wall of the tank body, a first cavity is formed among the baffle, the inner wall of the tank body and the inclined plate, a second cavity is formed between the partition plate and the inner wall of the side, close to the lower end of the inclined plate, of the tank body, and a collecting mechanism used for collecting sundries is arranged at the lower end of the second cavity. An adding mechanism used for enabling an operator to conveniently add photosensitive resin into the first cavity is arranged on one side of the second cavity, a plurality of through holes are evenly formed in the inclined plate at intervals, and the 3D printer has the advantages that the operator can conveniently collect and clean impurities in the resin tank, and printing of the impurities in the resin tank on the 3D printer is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of 3D printing equipment, in particular to a photosensitive resin tank. Background Art

[0002] 3D printing technology is a method of direct prototyping of product parts and is the latest development of rapid prototyping technology. This technology is based on the most basic idea of ​​rapid prototyping and directly shapes parts with specific geometric shapes according to 3D CAD models.

[0003] During the use of existing light-curing 3D printers, the photosensitive resin in the resin tank will be cured under the action of external sunlight. The cured photosensitive resin in the resin tank will affect the operator's printing of normal products. 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 photosensitive resin tank, which facilitates the operator to collect and clean impurities in the resin tank and reduces the impact of impurities in the resin tank on the printing of a 3D printer.

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

[0006] A photosensitive resin tank comprises a tank body, wherein the tank body is hollow inside and the upper end is connected to the outside, a partition plate is fixedly connected between the inner walls on both sides of the tank body, an inclined plate is fixedly connected to the inner wall of the tank body, the lower end of the inclined plate is located below the partition plate, a gap is set between the lower surface of the partition plate and the lower end of the inclined plate, a baffle plate is fixedly connected to the end surface of the lower end of the inclined plate, the baffle plate is fixedly connected to the inner wall of the tank body, a first cavity is formed between the baffle plate, the inner wall of the tank body and the inclined plate, a second cavity is formed between the partition plate and the inner wall of the tank body on one side close to the lower end of the inclined plate, a collecting mechanism for collecting debris is provided at the lower end of the second cavity, an adding mechanism for facilitating an operator to add photosensitive resin into the first cavity is provided on one side of the second cavity, a plurality of through holes are evenly spaced on the inclined plate, and the through holes are connected to the first cavity.

[0007] Furthermore, the adding mechanism includes an adding tube fixedly connected to the inner wall of one side of the second cavity, a feeding tube fixedly connected to the outer wall of the lower end of the adding tube, an extension tube slidably connected to the inner wall of the upper end of the adding tube, a sealing member arranged between the outer wall of the lower end of the extension tube and the inner wall of the adding tube, and a feeding hopper detachably connected to the inner wall of the upper end of the extension tube, and one end of the feeding tube is connected to the interior of the first cavity after passing through the baffle.

[0008] Furthermore, the sealing member includes a first sealing ring fixedly connected to the outer wall of the lower end of the extension tube, a second sealing ring fixedly connected to the inner wall of the upper end of the addition tube, a first sealing ring fixedly connected to the outer wall of the first sealing ring, a second sealing ring fixedly connected to the inner wall of the second sealing ring and a locking bolt threadedly connected to the outer wall of the addition tube, the first sealing ring is pressed against the inner wall of the addition tube through the first sealing ring, the second sealing ring is pressed against the outer wall of the extension tube through the second sealing ring, and one end of the locking bolt is pressed against the outer wall of the extension tube.

[0009] Furthermore, a mounting hole is provided on the outer wall of the extension tube, the mounting hole is located above the first sealing ring and flush with the upper surface of the first sealing ring, a sealing tube is fixedly connected in the mounting hole, one end of the sealing tube extends into the interior of the extension tube, and the other end of the sealing tube is flush with the outer wall of the extension tube, a mounting ring is fixedly connected to the inner wall of one end of the sealing tube, a bracket is fixedly connected to the inner wall of one end of the sealing tube close to the interior of the extension tube, a sealing rod is slidably connected to the bracket, a plug is fixedly connected to one end of the sealing rod, the plug is arranged in a conical shape, a sealing spring is sleeved on the outer wall of the sealing rod, two ends of the sealing spring are respectively fixedly connected to the bracket and the outer wall of the sealing rod, and the plug is pressed against the inner wall of the mounting ring under the action of the restoring force of the sealing spring.

[0010] Furthermore, several groups of rotating seats are fixedly connected to the inner wall of the trough body, a buffer plate is rotatably connected between the inner walls of the rotating seats, rotating rods are fixedly connected to both ends of the buffer plate, the buffer plate is rotatably connected to the rotating seat through the rotating rod, a torsion spring is sleeved on the outer wall of the rotating rod, and the two ends of the torsion spring are respectively fixedly connected to the outer wall of the rotating rod and the rotating seat.

[0011] Furthermore, the collecting mechanism includes a collecting box placed on the lower surface of the inner wall of the second cavity. The interior of the collecting box is hollow and the upper end is connected to the outside. The collecting box is arranged in a mesh shape. A winding rod is rotatably connected between the upper ends of the inner walls at both ends of the second cavity. A winding rope is fixedly connected to the outer walls at both ends of the winding rod. One end of the two winding ropes is respectively fixedly connected to the upper surface of the two ends of the collecting box. A driving handle is detachably connected to the end surface of one end of the winding rod.

[0012] Furthermore, a winding tube is coaxially connected to the outer wall of one end of the winding rod, and one end of one of the winding ropes is fixedly connected to the outer wall of the winding tube, and a limiting gear is fixedly connected to the outer wall of one end of the winding tube, and a mounting tube is coaxially fixedly connected to the outer wall of one end of the winding rod, and a supporting tube is fixedly connected to the outer wall of the mounting tube, a supporting rod is slidably connected in the supporting tube, and a U-shaped block is fixedly connected to one end of the supporting rod, and the opening of the U-shaped block is arranged toward the side away from the supporting rod, and a connecting gear is rotatably connected to the U-shaped block, and the connecting gear is meshed with the limiting gear, and a supporting spring is provided in the supporting tube, and two ends of the supporting spring are respectively fixedly connected to the inner wall of the supporting tube and the end face of one end of the supporting rod, and a blocking rod is fixedly connected to the inner wall of one end of the second cavity.

[0013] Furthermore, an annular groove is coaxially formed on the outer wall of one end of the winding rod, and the winding tube is rotatably connected to the inner wall of the annular groove, and the diameter of the outer wall of the winding tube is the same as the diameter of the winding rod.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. The present invention sets an inclined plate and a spacer plate, so that impurities in the resin tank will sink and settle on the inclined plate. Under the action of the inclined plate, the impurities move to the second cavity, and the impurities are cleaned by a collecting mechanism. Resin is added to the first cavity by an adding mechanism. Under the action of atmospheric pressure, the resin moves from the first cavity through the through hole to above the inclined plate. Through such a setting, the structure is simple and the operation is convenient, which facilitates the operator to collect and clean the impurities in the resin tank and reduces the impact of impurities in the resin tank on the printing of the 3D printer.

[0016] 2. The present invention slides the extension tube, the extension tube slides out from the adding tube, the feeding hopper is installed on the upper end of the extension tube, and resin is added to the feeding hopper. Under the action of atmospheric pressure, the resin in the extension tube and the feeding hopper is gradually pressed into the first cavity, and the resin in the first cavity enters the upper part of the inclined plate through the through hole. Through such an arrangement, the structure is simple and the operation is convenient, which makes it convenient for the operator to add resin and reduces the shaking of the liquid level of the resin in the resin tank when adding resin.

[0017] 3. In the present invention, the winding rod is driven to rotate by the driving handle, and the winding rod drives the collection box to move upward through the winding rope. When the upper surface of one end of the collection box abuts against the baffle plate, the driving handle is continued to be rotated, and the winding rope at the end away from the baffle rod continues to be wound on the winding rod. Through such an arrangement, the structure is simple and the operation is convenient. It is convenient for the operator to lift the collection box. At the same time, the collection box is in an inclined state when it moves to the upper end of the second cavity, which is convenient for collecting impurities in the collection box to one end of the collection box, and it is convenient for the operator to collect impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a cross-sectional view of the tank body in the present invention.

[0020] Figure 3 It is a structural schematic diagram of the adding mechanism in the present invention.

[0021] Figure 4 Figure 3 Enlarged view of point A in the middle.

[0022] Figure 5 It is a structural schematic diagram of the collecting mechanism in the present invention.

[0023] In the figure, 1, tank body; 2, partition plate; 3, inclined plate; 4, baffle; 5, first cavity; 6, second cavity; 7, collecting mechanism; 8, adding mechanism; 9, through hole; 10, adding pipe; 11, feeding pipe; 12, extension pipe; 13, sealing member; 14, feeding hopper; 15, first sealing ring; 16, second sealing ring; 17, first sealing ring; 18, second sealing ring; 19, locking bolt; 20, mounting hole; 21, sealing pipe; 22, mounting hole Mounting ring; 23. Bracket; 24. Sealing rod; 25. Plug; 26. Sealing spring; 27. Rotating seat; 28. Buffer plate; 29. ​​Rotating rod; 30. Torsion spring; 31. Collecting box; 32. Winding rod; 33. Winding rope; 34. Driving handle; 35. Winding tube; 36. Limiting gear; 37. Mounting tube; 38. Support tube; 39. Support rod; 40. U-shaped block; 41. Connecting gear; 42. Support spring; 43. Stop rod; 44. Ring groove. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a photosensitive resin tank comprises a tank body 1, the interior of the tank body 1 is hollow and the upper end is connected to the outside, an inclined plate 3 is fixedly connected to the inner wall of the tank body 1, a plurality of through holes 9 are evenly spaced on the inclined plate 3, a partition plate 2 is fixedly connected between the inner walls on both sides of the tank body 1, the partition plate 2 is located above the lower end of the inclined plate 3 and is arranged in a gap, a baffle plate 4 is fixedly connected to the end surface of the lower end of the inclined plate 3, the baffle plate 4 is fixedly connected to the inner wall of the tank body 1, a first cavity 5 is formed between the baffle plate 4, the inclined plate 3 and the inner wall of the tank body 1, the through hole 9 is connected to the first cavity 5, and a second cavity 6 is formed between the partition plate 2 and the inner wall of the tank body 1 close to the lower end of the inclined plate 3.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, an adding mechanism 8 is provided in the second cavity 6, and the adding mechanism 8 includes an adding tube 10, and the adding tube 10 is fixedly connected to the inner wall of one side of the second cavity 6, and a feeding tube 11 is fixedly connected to the outer wall of the lower end of the adding tube 10, and one end of the feeding tube 11 passes through the baffle 4 and extends into the first cavity 5, and an extension tube 12 is slidably connected to the inner wall of the upper end of the adding tube 10, and a sealing member 13 is provided between the outer wall of the lower end of the extension tube 12 and the inner wall of the adding tube 10, and a feeding hopper 14 is detachably connected to the inner wall of the upper end of the extension tube 12.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the sealing member 13 includes a first sealing ring 15, which is fixedly connected to the outer wall of the lower end of the extension tube 12, and a first sealing ring 17 is fixedly connected to the outer wall of the first sealing ring 15. The first sealing ring 15 is pressed against the inner wall of the addition tube 10 through the first sealing ring 17. A second sealing ring 16 is fixedly connected to the inner wall of the upper end of the addition tube 10, and a second sealing ring 18 is fixedly connected to the inner wall of the second sealing ring 16. The second sealing ring 16 is pressed against the outer wall of the extension tube 12 through the second sealing ring 18. A locking bolt 19 is threadedly connected to the outer wall of the addition tube 10, and one end of the locking bolt 19 is pressed against the outer wall of the extension tube 12.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, in order to facilitate the operator to discharge the resin that has penetrated into the space between the first sealing ring 15 and the second sealing ring 16, a mounting hole 20 is opened on the outer wall of the extension tube 12. The mounting hole 20 is located above the first sealing ring 15 and is flush with the upper surface of the first sealing ring 15. A sealing tube 21 is fixed in the mounting hole 20. One end of the sealing tube 21 is flush with the outer wall of the extension tube 12 and the other end of the sealing tube 21 extends into the interior of the extension tube 12. A sealing tube 21 is fixedly connected to the inner wall of one end of the sealing tube 21. There is a mounting ring 22, a bracket 23 is fixedly connected to the inner wall of the sealing tube 21, a sealing rod 24 is slidably connected to the bracket 23, a plug 25 is fixedly connected to one end of the sealing rod 24, the plug 25 is arranged in a conical shape, a sealing spring 26 is sleeved on the outer wall of the sealing rod 24, and the two ends of the sealing spring 26 are respectively fixedly connected to the bracket 23 and the outer wall of the sealing rod 24. Under the action of the restoring force of the sealing spring 26, the plug 25 is pressed against the inner wall of the mounting ring 22.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, in order to reduce the shaking of the resin in the trough body 1, a plurality of groups of rotating seats 27 are fixedly connected to the inner wall of the trough body 1, a buffer plate 28 is rotatably connected between the rotating seats 27, a rotating rod 29 is fixedly connected to the end faces of both ends of the buffer plate 28, the buffer plate 28 is rotatably connected to the rotating seat 27 through the rotating rod 29, a torsion spring 30 is sleeved on the outer wall of the rotating rod 29, and the two ends of the torsion spring 30 are respectively fixedly connected to the outer wall of the rotating rod 29 and the rotating seat 27.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, in order to facilitate the operator to collect and process impurities, a collecting mechanism 7 is provided on the bottom surface of the inner wall of the second cavity 6, and the collecting mechanism 7 includes a collecting box 31, which is placed on the bottom surface of the inner wall of the second cavity 6. The interior of the collecting box 31 is hollow and the upper end is connected to the outside world. The collecting box 31 is arranged in a mesh shape, and a winding rod 32 is rotatably connected to the inner walls at both ends of the second cavity 6, and an annular groove 44 is provided on the outer wall of one end of the winding rod 32. A winding tube 35 is coaxially rotatably connected to the annular groove 44, and a winding rope 33 is fixedly connected to the outer wall of the winding tube 35 and the outer wall of the end of the winding rod 32 away from the winding tube 35. One end of the two winding ropes 33 is fixedly connected to the upper surface of the two ends of the collecting box 31, and a detachable connection is provided on the end surface of one end of the winding rod 32. A driving handle 34 is connected, a limit gear 36 is fixedly connected to the outer wall of one end of the winding tube 35, a mounting tube 37 is coaxially fixedly connected to the outer wall of one end of the winding rod, a support tube 38 is fixedly connected to the outer wall of the mounting tube 37, a support rod 39 is slidably connected in the support tube 38, a U-shaped block 40 is fixedly connected to one end of the support rod 39, the opening of the U-shaped block 40 is arranged toward the side away from the support rod 39, a connecting gear 41 is rotatably connected to the U-shaped block 40, the connecting gear 41 is meshed with the limit gear 36, a support spring 42 is provided in the support tube 38, the two ends of the support spring 42 are respectively fixedly connected to the inner wall of the support tube 38 and the end face of one end of the support rod 39, and a stop rod 43 is fixedly connected to the inner wall of one end of the second cavity 6.

[0031] The working principle of the embodiment of the present invention is as follows: the impurities in the resin tank sink to the inclined plate 3 under the action of gravity, and under the action of the inclined plate 3, the impurities move into the collection box 31, and the operator drives the winding rod 32 to rotate by driving the handle 34, and the winding rod 32 winds the winding rope 33 on the winding rod 32, and the winding rope 33 lifts the collection box 31 upward, and when the upper surface of one end of the collection box 31 abuts against the stop rod 43, the driving handle 34 is continuously rotated, and the driving handle 34 drives the winding rod 32 to rotate, and the connecting gear 41 compresses the supporting spring 42, so that the connecting gear 41 and the limit gear 36 are disengaged, and the winding tube 35 rotates on the winding rod, so that the collection box 31 is tilted, and the impurities in the collection box 31 move to one end of the collection box 31;

[0032] When the operator needs to add resin to the tank body 1, the extension tube 12 is slid out of the adding tube 10, the locking bolt 19 is tightened, the hopper 14 is installed on the upper end of the extension tube 12, and resin is added to the hopper 14. Under the action of atmospheric pressure, the resin is pressed into the first cavity 5, and the resin in the first cavity 5 enters the upper part of the inclined plate 3 through the through hole 9;

[0033] When the extension tube 12 moves upward, the air between the first sealing ring 15 and the second sealing ring 16 is compressed and the pressure increases, the air pressure drives the plug 25 to move, the sealing spring 26 is compressed, and the resin between the first sealing ring 15 and the second sealing ring 16 is squeezed into the extension tube 12.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0035] Although this article uses more 1, tank body; 2, partition plate; 3, inclined plate; 4, baffle; 5, first cavity; 6, second cavity; 7, collecting mechanism; 8, adding mechanism; 9, through hole; 10, adding tube; 11, feeding tube; 12, extension tube; 13, sealing member; 14, feeding hopper; 15, first sealing ring; 16, second sealing ring; 17, first sealing ring; 18, second sealing ring; 19, locking bolt; 20, mounting hole; 21, sealing tube; 22, mounting ring; 23, The present invention includes the following terms: bracket; 24, sealing rod; 25, plug; 26, sealing spring; 27, rotating seat; 28, buffer plate; 29, rotating rod; 30, torsion spring; 31, collecting box; 32, winding rod; 33, winding rope; 34, driving handle; 35, winding tube; 36, limiting gear; 37, mounting tube; 38, supporting tube; 39, supporting rod; 40, U-shaped block; 41, connecting gear; 42, supporting spring; 43, blocking rod; 44, annular groove, etc., but the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A photosensitive resin tank, characterized in that: The invention comprises a trough body (1), wherein the interior of the trough body (1) is hollow and the upper end is communicated with the outside, a partition plate (2) is fixedly connected between the inner walls on both sides of the trough body (1), an inclined plate (3) is fixedly connected to the inner wall of the trough body (1), the lower end of the inclined plate (3) is located below the partition plate (2), a gap is formed between the lower surface of the partition plate (2) and the lower end of the inclined plate (3), a baffle plate (4) is fixedly connected to the end surface of the lower end of the inclined plate (3), the baffle plate (4) is fixedly connected to the inner wall of the trough body (1), and the baffle plate (4) and the trough body (1) are fixedly connected to each other. 1) a first cavity (5) is formed between the inner wall and the inclined plate (3), a second cavity (6) is formed between the partition plate (2) and the inner wall of the trough body (1) on one side close to the lower end of the inclined plate (3), a collecting mechanism (7) for collecting debris is provided at the lower end of the second cavity (6), an adding mechanism (8) for facilitating an operator to add photosensitive resin into the first cavity (5) is provided on one side of the second cavity (6), and a plurality of through holes (9) are evenly spaced on the inclined plate (3), and the through holes (9) are connected to the first cavity (5).

2. A photosensitive resin tank according to claim 1, characterized in that: The adding mechanism (8) comprises an adding pipe (10) fixedly connected to the inner wall of one side of the second cavity (6), a feeding pipe (11) fixedly connected to the outer wall of the lower end of the adding pipe (10), an extension pipe (12) slidably connected to the inner wall of the upper end of the adding pipe (10), a sealing member (13) arranged between the outer wall of the lower end of the extension pipe (12) and the inner wall of the adding pipe (10), and a feeding hopper (14) detachably connected to the inner wall of the upper end of the extension pipe (12); one end of the feeding pipe (11) passes through the baffle (4) and communicates with the interior of the first cavity (5).

3. A photosensitive resin tank according to claim 2, characterized in that: The sealing member (13) comprises a first sealing ring (15) fixedly connected to the outer wall of the lower end of the extension tube (12), a second sealing ring (16) fixedly connected to the inner wall of the upper end of the addition tube (10), a first sealing ring (17) fixedly connected to the outer wall of the first sealing ring (15), a second sealing ring (18) fixedly connected to the inner wall of the second sealing ring (16), and a locking bolt (19) threadedly connected to the outer wall of the addition tube (10); the first sealing ring (15) is pressed against the inner wall of the addition tube (10) through the first sealing ring (17); the second sealing ring (16) is pressed against the outer wall of the extension tube (12) through the second sealing ring (18); and one end of the locking bolt (19) is pressed against the outer wall of the extension tube (12).

4. A photosensitive resin tank according to claim 3, characterized in that: An installation hole (20) is provided on the outer wall of the extension tube (12). The installation hole (20) is located above the first sealing ring (15) and is flush with the upper surface of the first sealing ring (15). A sealing tube (21) is fixedly connected in the installation hole (20). One end of the sealing tube (21) extends into the interior of the extension tube (12). The other end of the sealing tube (21) is flush with the outer wall of the extension tube (12). A installation ring (22) is fixedly connected to the inner wall of one end of the sealing tube (21). The sealing tube (21) is located near the interior of the extension tube (12). A bracket (23) is fixedly connected to the inner wall of one end of the sealing rod (24), a sealing rod (24) is slidably connected to the bracket (23), a plug (25) is fixedly connected to one end of the sealing rod (24), the plug (25) is arranged in a conical shape, a sealing spring (26) is sleeved on the outer wall of the sealing rod (24), the two ends of the sealing spring (26) are respectively fixedly connected to the bracket (23) and the outer wall of the sealing rod (24), and the plug (25) is pressed against the inner wall of the mounting ring (22) under the action of the restoring force of the sealing spring (26).

5. The photosensitive resin tank according to claim 1, characterized in that: A plurality of groups of rotating seats (27) are fixedly connected to the inner wall of the trough body (1); a buffer plate (28) is rotatably connected between the inner walls of the rotating seats (27); rotating rods (29) are fixedly connected to both ends of the buffer plate (28); the buffer plate (28) is rotatably connected to the rotating seat (27) through the rotating rod (29); a torsion spring (30) is sleeved on the outer wall of the rotating rod (29); and the two ends of the torsion spring (30) are respectively fixedly connected to the outer wall of the rotating rod (29) and the rotating seat (27).

6. The photosensitive resin tank according to claim 1, characterized in that: The collecting mechanism (7) comprises a collecting box (31) placed on the lower surface of the inner wall of the second cavity (6); the interior of the collecting box (31) is hollow and the upper end is connected to the outside; the collecting box (31) is arranged in a mesh shape; a winding rod (32) is rotatably connected between the upper ends of the inner walls at both ends of the second cavity (6); a winding rope (33) is fixedly connected to the outer walls at both ends of the winding rod (32); one end of the two winding ropes (33) is respectively fixedly connected to the upper surfaces at both ends of the collecting box (31); and a driving handle (34) is detachably connected to the end surface of one end of the winding rod (32).

7. A photosensitive resin tank according to claim 6, characterized in that: A winding tube (35) is coaxially connected to the outer wall of one end of the winding rod, one end of one of the winding ropes (33) is fixedly connected to the outer wall of the winding tube (35), a limit gear (36) is fixedly connected to the outer wall of one end of the winding tube (35), a mounting tube (37) is fixedly connected to the outer wall of one end of the winding rod, a support tube (38) is fixedly connected to the outer wall of the mounting tube (37), a support rod (39) is slidably connected in the support tube (38), and a gear (36) is fixedly connected to one end of the support rod (39). A U-shaped block (40) is connected, and the opening of the U-shaped block (40) is arranged toward a side away from the support rod (39). A connecting gear (41) is rotatably connected to the U-shaped block (40), and the connecting gear (41) is meshed with the limit gear (36). A supporting spring (42) is arranged in the supporting tube (38), and the two ends of the supporting spring (42) are respectively fixedly connected to the inner wall of the supporting tube (38) and the end surface of one end of the supporting rod (39). A blocking rod (43) is fixedly connected to the inner wall of one end of the second cavity (6).

8. The photosensitive resin tank according to claim 7, characterized in that: An annular groove (44) is coaxially formed on the outer wall of one end of the winding rod, and the winding tube (35) is rotatably connected to the inner wall of the annular groove (44). The diameter of the outer wall of the winding tube (35) is the same as the diameter of the winding rod.

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