A silicon rubber product punching jig

Abstract

This utility model provides a die for punching silicone rubber products, including a base plate, a first positioning plate, and a first support spring. Multiple punches are spaced apart on the base plate. The first positioning plate has a receiving groove with a first through hole within it. The punches extend into their respective first through holes. A movable plate is provided within the receiving groove, and the movable plate has a first positioning groove with second through holes aligned with the first through holes. A second positioning plate is also provided on the first positioning plate, with a second support spring between the two plates. The second positioning plate has a second positioning groove with a third through hole within it. A rotatable pressure cap is also provided on the second positioning plate, covering the opening of the second positioning groove and fitting against its bottom surface. This utility model solves the technical problems of existing die-cutting operations being cumbersome and inconvenient, resulting in a simplified and user-friendly die-cutting operation for silicone rubber products.

Description

Technical Field

[0001] This utility model relates to the field of silicone rubber product manufacturing technology, and in particular to a silicone rubber product punching fixture. Background Technology

[0002] Silicone rubber products are made from methyl vinyl silicone rubber as the base rubber, with various fillers (reinforcing agents, heat-resistant agents, modifiers, etc.) added, through processes such as mixing, slurry blowing, filtration, vulcanization, molding, extrusion, and bonding. During the processing of silicone rubber products, punching is required to remove excess waste or to drill holes in the products.

[0003] Chinese utility model patent CN220946632U discloses a waste screening fixture for silicone rubber products, comprising: a processing table, a movable plate on the processing table, a waste screening mechanism on the movable plate, a fixed plate fixedly connected to the fixed plate, a spring fixedly connected to the fixed plate, a push plate fixedly connected to one end of the spring, multiple top blocks fixedly connected to the push plate, four first connecting rods fixedly connected to the push plate, a waste screening plate on the push plate, multiple waste screening holes on the waste screening plate, four positioning holes on the waste screening plate, a connecting plate on the waste screening plate, and second connecting rods fixedly connected to the connecting plate, the second connecting rods being fitted into the positioning holes, and the first connecting rods being fitted into the positioning holes. The fixture pushes the silicone rubber products upwards through the top blocks, and the cooperation between the top blocks and the waste screening holes performs waste screening on the silicone rubber products. The screened silicone rubber products adhere to transparent paper, realizing automated waste screening of silicone rubber products, reducing labor waste, and improving screening efficiency.

[0004] When using the above-mentioned fixture, the connecting plate and the waste screening plate need to be removed upwards first, the silicone rubber product is placed on the push plate, and the adhesive transparent paper is placed on the connecting plate. Then, the positioning hole opened on the waste screening plate is inserted into the first connecting rod, and the second connecting rod on the connecting plate is inserted into the positioning hole. After waste screening, the connecting plate and the waste screening plate are removed, and the processed silicone rubber product and transparent paper are taken out. That is, when using the above-mentioned fixture to screen waste silicone rubber products, repeated disassembly and assembly are required, which is quite cumbersome. Therefore, the existing fixture is not convenient to use. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a silicone rubber product punching fixture, which solves the problems of cumbersome operation and inconvenience in using existing fixtures.

[0006] According to an embodiment of this utility model, a silicone rubber product punching fixture includes a base plate, a first positioning plate that can be raised and lowered on the base plate, and a first support spring disposed between the base plate and the first positioning plate. The base plate is provided with a plurality of punches spaced apart. The first positioning plate is provided with a receiving groove and a first through hole aligned with each punch. Each punch extends into a corresponding first through hole. The receiving groove is provided with a movable plate that can move horizontally. The movable plate has a first positioning groove and a second through hole aligned with each of the first through holes. The first positioning plate is also provided with a raised and lowerable second positioning plate, and a second support spring is disposed between the first positioning plate and the second positioning plate. The second positioning plate is provided with a second positioning groove and a third through hole aligned with each of the second through holes. The second positioning plate is also provided with a rotatable pressure cap that covers the opening of the second positioning groove and is in contact with the bottom surface of the second positioning groove.

[0007] Furthermore, the base plate is provided with a vertical first guide rod, the first positioning plate is provided with a first guide hole that cooperates with the first guide rod, and the first support spring is sleeved on the first guide rod.

[0008] Furthermore, the first positioning plate is provided with a dovetail groove communicating with the receiving groove, the length direction of the dovetail groove is consistent with the moving direction of the movable plate, and the movable plate is provided with a slider that cooperates with the dovetail groove.

[0009] Furthermore, a first magnetic suction element is provided in the receiving groove, and a second magnetic suction element that cooperates with the first magnetic suction element is provided on one side of the movable plate.

[0010] Furthermore, the movable plate is provided with a first protrusion, and the first protrusion and the second magnetic attractor are respectively located on opposite sides of the movable plate.

[0011] Furthermore, the first positioning plate is provided with a vertical second guide rod, the second positioning plate is provided with a second guide hole that cooperates with the second guide rod, and the second support spring is sleeved on the second guide rod.

[0012] Furthermore, the second positioning plate is provided with a mounting rod, and one side of the pressure cap is provided with a mounting hole that mates with the mounting rod.

[0013] Furthermore, the pressure cap is provided with a second protrusion, the second protrusion and the mounting hole are respectively located on opposite sides of the pressure cap, and the second positioning plate is provided with a groove to accommodate the second protrusion.

[0014] Furthermore, a third magnetic attractor is provided in the groove, and a fourth magnetic attractor is provided on the second protrusion to cooperate with the third magnetic attractor.

[0015] Furthermore, the pressure cap is provided with a plurality of clearance grooves at intervals, and the clearance grooves are connected to the third through hole in a one-to-one correspondence.

[0016] Compared with the prior art, this utility model has the following advantages: By employing a first positioning groove on a movable plate to accommodate the silicone rubber product to be processed, and by moving the movable plate on the first positioning plate to place and remove the silicone rubber product, when the movable plate is pulled out of the receiving groove, the silicone rubber product can be placed into or removed from the first positioning plate. Adhesive paper is placed in the second positioning groove on the second positioning plate, and by rotating the pressure cap to remove it from the second positioning groove, the adhesive paper can be placed into or removed from the second positioning groove. After the adhesive paper is placed in the second positioning groove, rotating the pressure cap to enter the second positioning groove presses the adhesive paper firmly into the second positioning groove. This process involves placing the silicone rubber product into the first positioning groove, placing the adhesive paper into the second positioning groove, moving the movable plate to enter the receiving groove, and rotating the pressure cap to press the adhesive paper into the second positioning groove. After the paper is pressed, the corresponding first, second, and third through holes are aligned. At this time, pressure is applied to the pressure cap to press the second positioning plate against the first positioning plate and simultaneously press the first positioning plate against the base plate. The punch passes through the corresponding first, second, and third through holes in sequence to punch the silicone rubber product. The waste material cut by the punch is adhered to the sticky paper. After the pressure applied to the pressure cap is released, the first positioning plate is reset under the drive of the first support spring, and the second positioning plate is reset under the drive of the second support spring. At this time, the punched silicone rubber product and the paper with the adhered waste material can be taken out, thus completing the punching process of the silicone rubber product. Moreover, there is no need to disassemble the fixture when taking out and putting in the silicone rubber product and the sticky paper. This solves the technical problems of the existing fixture being cumbersome and inconvenient to use, and produces the technical effect of simplifying the punching operation of silicone rubber products and making it convenient to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a silicone rubber product punching fixture according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a silicone rubber product punching fixture in another state according to an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of a silicone rubber product punching fixture according to an embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of another section of a silicone rubber product punching fixture according to an embodiment of the present invention.

[0021] In the above figures: 1. Base plate; 11. First support spring; 12. Punch; 13. First guide rod; 2. First positioning plate; 21. Receiving groove; 22. Second support spring; 23. Dovetail groove; 24. First magnetic suction element; 25. Second guide rod; 3. Movable plate; 31. First positioning groove; 32. Second through hole; 33. Slider; 34. Second magnetic suction element; 35. First protrusion; 4. Second positioning plate; 41. Second positioning groove; 42. Third through hole; 43. Mounting rod; 44. Groove; 45. Third magnetic suction element; 5. Pressure cap; 51. Second protrusion; 52. Fourth magnetic suction element; 53. Alternating groove. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 4 As shown in the figure, this utility model embodiment proposes a silicone rubber product punching fixture, which is used to punch silicone rubber products to remove excess waste material or to punch holes in silicone rubber products.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3The silicone rubber product punching fixture includes a base plate 1, a first positioning plate 2 that can be lifted and lowered on the base plate 1, and a first support spring 11 disposed between the base plate 1 and the first positioning plate 2. A plurality of punches 12 are spaced apart on the base plate 1. The first positioning plate 2 has a receiving groove 21, and the receiving groove 21 has first through holes aligned one-to-one with each punch 12. Each punch 12 extends into a corresponding first through hole. A movable plate 3 that can move horizontally is disposed within the receiving groove 21. The movable plate 3 has a first positioning function. The first positioning groove 31 is provided with a second through hole 32 that is aligned with the first through hole. The first positioning groove 31 is used to place the silicone rubber product to be processed. When the movable plate 3 moves outside the receiving groove 21, it can put the silicone rubber product into the first positioning groove 31 or take out the silicone rubber product in the first positioning groove 31. When the movable plate 3 moves into the receiving groove 21, the second through hole 32 is aligned with the first through hole, so that the punch 12 can pass through the first through hole and the second through hole 32 in sequence to process the silicone rubber product. The silicone rubber product in the first positioning groove 31 is punched; the first positioning plate 2 is also provided with a liftable second positioning plate 4 and a second support spring 22 is provided between the first positioning plate 2 and the second positioning plate 4. The second positioning plate 4 is provided with a second positioning groove 41 and a third through hole 42 that is aligned one-to-one with the second through hole 32. The second positioning plate 4 is also provided with a rotatable pressure cover 5. The pressure cover 5 covers the opening of the second positioning groove 41 and fits against the bottom surface of the second positioning groove 41. The second positioning groove 41 is used to place adhesive paper. After the adhesive paper is placed in the second positioning groove 41, the pressure cover 5 is rotated to extend into the second positioning groove 41, which can press the adhesive paper into the second positioning groove 41. After the punch 12 punches the silicone rubber product, it passes through the third through hole 42 and pushes the cut waste into the second positioning groove 41 and adheres to the adhesive paper. Rotating the pressure cover 5 to remove the pressure cover 5 from the second positioning groove 41 can remove the adhesive paper together with the punching waste.

[0025] Specifically, the operation steps for punching silicone rubber products using the silicone rubber product punching fixture provided in this embodiment are as follows: First, the movable plate 3 is pulled out of the receiving groove 21 and the silicone rubber product is placed into the first positioning groove 31. Then, the movable plate 3 is pushed into the receiving groove 21 to move the movable plate 3 to the position where the corresponding first through hole, second through hole 32, and third through hole 42 are aligned in sequence. Then, the pressure cover 5 is rotated to remove the pressure cover 5 from the second positioning groove 41 and adhesive paper is placed into the second positioning groove 41. After the adhesive paper is placed into the second positioning groove 41, the pressure cover 5 is rotated to press the adhesive paper tightly. Then, pressure is applied to the pressure cover 5 using a press or other equipment to press the second positioning plate 4 onto the first positioning plate 2 and simultaneously press the first positioning plate 2 onto the base plate 1. At this time, the punch 12 passes through the corresponding through holes in sequence. The first through hole, the second through hole 32, and the third through hole 42 are described. When the punch 12 passes through the first positioning groove 31, it punches the silicone rubber product in the first positioning groove 31. The waste material punched out by the punch 12 is pushed into the second positioning groove 41 and adheres to the sticky paper. After the punching is completed and the pressure applied to the pressure cover 5 is released, the first positioning plate 2 is reset under the drive of the first support spring 11, and the second positioning plate 4 is reset under the drive of the second support spring 22. At this time, the punch 12 exits the first positioning groove 31 and the second positioning groove 41. Moving the movable plate 3 so that the movable plate 3 exits the receiving groove 21 and rotating the pressure cover 5 so that the pressure cover 5 exits the second positioning groove 41 allows the punched silicone rubber product and the paper with the adhered waste material to be removed, thus completing the punching process of the silicone rubber product. The silicone rubber product punching fixture provided in this embodiment does not require disassembly and assembly when picking up and putting in the silicone rubber product and the sticky paper, simplifying the silicone rubber product punching operation and making it convenient to use.

[0026] like Figure 1 and Figure 3 As shown, the base plate 1 is provided with a vertical first guide rod 13, and the first positioning plate 2 is provided with a first guide hole that cooperates with the first guide rod 13, and the first support spring 11 is sleeved on the first guide rod 13. The first positioning plate 2 is installed on the base plate 1 through the cooperation of the first guide hole and the first guide rod 13, ensuring that the cooperation between the first positioning plate 2 and the base plate 1 is reliable while preventing the first positioning plate 2 from deviating from the preset direction when moving. The first support spring 11 is sleeved on the first guide rod 13, so that the first support spring 11 remains stable between the first positioning plate 2 and the base plate 1, which helps to improve the structural stability of the silicone rubber product punching fixture.

[0027] like Figure 1 and Figure 2 As shown, the first positioning plate 2 is provided with a dovetail groove 23 communicating with the receiving groove 21. The length direction of the dovetail groove 23 is consistent with the moving direction of the movable plate 3, and the movable plate 3 is provided with a slider 33 that cooperates with the dovetail groove 23. With the dovetail groove 23 on the first positioning plate 2 and the slider 33 cooperating with the dovetail groove 23 on the movable plate 3, the slider 33 slides within the dovetail groove 23 when the movable plate 3 moves, ensuring that the movable plate 3 moves along a preset direction and preventing the movable plate 3 from disengaging from the first positioning plate 2 during movement.

[0028] Please refer to Figure 2 and Figure 4 The receiving groove 21 is provided with a first magnetic suction member 24, and one side of the movable plate 3 is provided with a second magnetic suction member 34 that cooperates with the first magnetic suction member 24. When the movable plate 3 moves into the receiving groove 21, the second magnetic suction member 34 is attracted to the first magnetic suction member 24, so that the movable plate 3 is held in a position in which the corresponding first through hole, second through hole 32 and third through hole 42 are aligned in sequence, ensuring that the punch 12 can smoothly extend into the first positioning groove 31 and the second positioning groove 41 during the punching process.

[0029] In detail, the movable plate 3 is provided with a first protrusion 35, and the first protrusion 35 and the second magnetic suction member 34 are respectively located on opposite sides of the movable plate 3. The first protrusion 35, located on the side of the movable plate 3 away from the second magnetic suction member 34, is used to operate the movable plate 3 to move on the second positioning plate 4, so as to push or pull the movable plate 3 to adjust the position of the movable plate 3 on the second positioning plate 4.

[0030] like Figure 3 As shown, the first positioning plate 2 is provided with a vertical second guide rod 25, and the second positioning plate 4 is provided with a second guide hole that cooperates with the second guide rod 25, and the second support spring 22 is sleeved on the second guide rod 25. By providing the second guide hole on the second positioning plate 4 to cooperate with the second guide rod 25 on the first positioning plate 2, the second positioning plate 4 can move up and down in the vertical direction on the first positioning plate 2, preventing the second positioning plate 4 from deviating unexpectedly. The second support spring 22 is sleeved on the second guide rod 25, so that both ends of the second support spring 22 are kept in contact with the first positioning plate 2 and the second positioning plate 4 respectively, preventing the second support spring 22 from disengaging from the second positioning plate 4 when the second positioning plate 4 moves.

[0031] Please combine Figure 1 and Figure 2The second positioning plate 4 is provided with a mounting rod 43, and one side of the pressure cover 5 is provided with a mounting hole that mates with the mounting rod 43. The pressure cover 5 is installed onto the second positioning plate 4 through the mounting hole and the mounting rod 43, ensuring that the pressure cover 5 can rotate smoothly on the second positioning plate 4.

[0032] In this embodiment, the pressure cap 5 is provided with a second protrusion 51, and the second protrusion 51 and the mounting hole are respectively located on opposite sides of the pressure cap 5. The second positioning plate 4 is provided with a groove 44 for accommodating the second protrusion 51. When the pressure cap 5 is rotated to the position where the adhesive paper is pressed into the second positioning groove 41, the second protrusion 51 enters the groove 44, so as to position the pressure cap 5 by the cooperation between the second protrusion 51 and the groove 44. When it is necessary to rotate the pressure cap 5, the second protrusion 51 can be moved to facilitate the operation of the silicone rubber product punching fixture.

[0033] like Figure 4 As shown, a third magnetic suction member 45 is provided in the groove 44, and a fourth magnetic suction member 52 that cooperates with the third magnetic suction member 45 is provided on the second protrusion 51. By attracting the third magnetic suction member 45 with the fourth magnetic suction member 52, the pressure cover 5 can be kept in the position of pressing the sticky paper tightly in the second positioning groove 41, preventing the pressure cover 5 from rotating unexpectedly during the punching process, which helps to improve the structural stability of the silicone rubber product punching fixture.

[0034] Please refer to Figure 2 and Figure 3 The pressure cap 5 is provided with a plurality of clearance grooves 53 at intervals, and the clearance grooves 53 are connected to the third through hole 42 one by one. During the process of punching silicone rubber products by the silicone rubber product punching fixture, the punch 12 passes through the second positioning groove 41 and extends into the clearance groove 53 to prevent the punch 12 from colliding with the pressure cap 5 and deforming the punch 12, which would affect the normal use of the silicone rubber product punching fixture, thereby extending the service life of the silicone rubber product punching fixture.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A die for punching silicone rubber products, characterized in that: The device includes a base plate, a first positioning plate that can be raised and lowered on the base plate, and a first support spring disposed between the base plate and the first positioning plate. The base plate has multiple punches spaced apart. The first positioning plate has a receiving groove with first through holes aligned with each punch. Each punch extends into a corresponding first through hole. The receiving groove has a movable plate that can move horizontally. The movable plate has a first positioning groove with second through holes aligned with each first through hole. The first positioning plate also has a raised and lowerable second positioning plate with a second support spring between it and the first positioning plate. The second positioning plate has a second positioning groove with third through holes aligned with each second through hole. The second positioning plate also has a rotatable pressure cap that covers the opening of the second positioning groove and fits against the bottom surface of the second positioning groove.

2. The silicone rubber product punching fixture as described in claim 1, characterized in that: The base plate is provided with a vertical first guide rod, the first positioning plate is provided with a first guide hole that cooperates with the first guide rod, and the first support spring is sleeved on the first guide rod.

3. The silicone rubber product punching fixture as described in claim 1, characterized in that: The first positioning plate is provided with a dovetail groove that communicates with the receiving groove. The length direction of the dovetail groove is consistent with the moving direction of the movable plate, and the movable plate is provided with a slider that cooperates with the dovetail groove.

4. The silicone rubber product punching fixture as described in claim 1, characterized in that: The receiving groove is provided with a first magnetic suction component, and one side of the movable plate is provided with a second magnetic suction component that cooperates with the first magnetic suction component.

5. A silicone rubber product punching fixture as described in claim 4, characterized in that: The movable plate is provided with a first protrusion, and the first protrusion and the second magnetic attractor are respectively located on opposite sides of the movable plate.

6. A silicone rubber product punching fixture as described in claim 1, characterized in that: The first positioning plate is provided with a vertical second guide rod, the second positioning plate is provided with a second guide hole that cooperates with the second guide rod, and the second support spring is sleeved on the second guide rod.

7. A silicone rubber product punching fixture as described in claim 1, characterized in that: The second positioning plate is provided with a mounting rod, and one side of the pressure cover is provided with a mounting hole that mates with the mounting rod.

8. A silicone rubber product punching fixture as described in claim 7, characterized in that: The pressure cap is provided with a second protrusion, and the second protrusion and the mounting hole are respectively located on opposite sides of the pressure cap. The second positioning plate is provided with a groove to accommodate the second protrusion.

9. A silicone rubber product punching fixture as described in claim 8, characterized in that: The groove is provided with a third magnetic attractor, and the second protrusion is provided with a fourth magnetic attractor that cooperates with the third magnetic attractor.

10. A silicone rubber product punching fixture as described in claim 1, characterized in that: The pressure cap is provided with a plurality of clearance grooves at intervals, and the clearance grooves are connected to the third through hole one by one.

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