Fine sealing ring punching jig

Abstract

The utility model relates to the technical field of sealing ring punching, in particular to a small sealing ring punching jig which comprises a supporting seat, and a first up-down module and a second up-down module which are used for positioning punched products are arranged on the supporting seat. A first lifting plate capable of moving up and down is arranged above the first up-down module, a plurality of first ejector pins capable of penetrating through the first up-down module are arranged on the first lifting plate through a first mounting plate, and the first ejector pins are used for removing burrs on the sealing ring; a second lifting plate capable of moving up and down is arranged above the second up-down module, a plurality of second ejector pins capable of penetrating through the second up-down module are arranged on the second lifting plate through a second mounting plate, and the second ejector pins are used for punching sealing rings on the punched products; the sealing ring punching device can remove burrs on a sealing ring and punch the sealing ring at the same time, integrates the two functions, and greatly improves the punching efficiency of the sealing ring.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing ring punching, in particular to a small sealing ring punching jig. Background Art

[0002] In the mechanical and electronic industries, sealing rings are widely used in various equipment to achieve the functions of sealing and protection. With the continuous development of technology, the requirements for the accuracy and size of sealing rings are getting higher and higher, especially for small sealing rings, which are small in size and difficult to process. Traditional processing methods are difficult to meet the requirements of high precision and high efficiency. In the production process of small sealing rings, it is necessary to first process the small sealing rings into Figure 2-3 The punching product consists of a self-detaching edge and a plurality of sealing rings with burrs; before punching the sealing ring from the self-detaching edge, the burrs on the sealing ring need to be removed first. Among them, there is an existing sealing ring burr removal device as follows:

[0003] A Chinese patent document with publication number CN208867403U discloses a silicone sealing ring burr punching jig, which specifically discloses: it includes a punching machine, an upper die and a lower die, the punching machine is provided with a plurality of guide pillars, the lower die passes through the guide pillars and is fixed on the punching machine, the upper die is slidably arranged on the guide pillars, the upper die is transmission-connected with a driving device, the lower die is provided with a mounting groove, blanking holes are distributed in the mounting groove, a plurality of burr cutters are arranged on the upper die, the burr cutters correspond to the positions of the blanking holes, the positioning plate and the lower die position and fix the silicone sealing ring, the connecting plate and the slide plate are driven up and down by the driving device, the burr cutter is driven to descend to the silicone sealing ring and deburr the silicone sealing ring, thereby realizing rapid deburring of the silicone sealing ring, reducing the labor intensity of operators, improving work efficiency, improving the burr removal accuracy, preventing deviations in the shape and size of the silicone sealing ring, and reducing the product defective rate.

[0004] As can be seen from the above, the existing punching jig is to place the silicone sealing ring on the installation groove, press the positioning plate on the lower mold, so as to fix the silicone sealing ring, and the cylinder drives the connecting plate and the slide plate to move downward. The burr cutter moves to the silicone sealing ring along with the connecting plate, and removes the burrs of the silicone sealing ring. However, the existing punching jig can only remove the burrs of the sealing ring. When the sealing ring needs to be punched off from the self-detachable edge, a designated punching jig must be used for punching, which makes the function of the existing punching jig relatively simple. Therefore, a small sealing ring punching jig is provided to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a small sealing ring punching jig in view of the shortcomings of the prior art, so as to solve the technical problem that the existing punching jig has a relatively single function.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A fine sealing ring punching jig comprises a support base, on which a first upper and lower die set and a second upper and lower die set for positioning the punched product are arranged;

[0008] A first lifting plate capable of moving up and down is provided above the first upper and lower modules, and a plurality of first ejectors capable of passing through the first upper and lower modules are installed on the first lifting plate through a first mounting plate, and the first ejectors are used to remove burrs on the sealing ring;

[0009] A second lifting plate that can move up and down is provided above the second upper and lower modules. A plurality of second ejectors that can pass through the second upper and lower modules are installed on the second lifting plate through a second mounting plate. The second ejectors are used to punch the sealing rings on the punched products.

[0010] Furthermore, the first upper and lower mold groups include a first lower mold positioning plate and a first upper mold positioning plate, and the second upper and lower mold groups include a second lower mold positioning plate and a second upper mold positioning plate; the first lifting plate is placed above the first upper mold positioning plate, and the first lifting plate is slid up and down on the first lower mold positioning plate; the second lifting plate is placed above the second upper mold positioning plate, and the second lifting plate is slid up and down on the second lower mold positioning plate.

[0011] Furthermore, a pressure component is provided between the first mounting plate and the first upper mold positioning plate and between the second mounting plate and the second upper mold positioning plate, and the pressure component is used to apply downward force to the first upper mold positioning plate and the second upper mold positioning plate.

[0012] Furthermore, a waste collection frame and a sealing ring collection frame are placed on the support seat, and the waste collection frame is placed below the first lower mold positioning plate, and the sealing ring collection frame is placed below the second lower mold positioning plate.

[0013] Furthermore, a punching portion for punching a sealing ring is provided on the bottom end of the first ejector pin, and a punching portion for punching a sealing ring on a punched product is provided on the bottom end of the second ejector pin.

[0014] Furthermore, the punching product includes a self-demolition edge and a plurality of sealing rings with burrs arranged on the self-demolition edge. A groove portion is provided on the circumferential side of each sealing ring arranged on the self-demolition edge, and the groove portion is placed on the top of the self-demolition edge. A raised portion is provided on the circumferential side of each sealing ring, and the raised portion is placed on the bottom of the self-demolition edge. A plurality of through holes are also provided on the self-demolition edge.

[0015] Furthermore, a first placement groove for placing the self-detachable edge is provided on the first lower mold positioning plate, and a plurality of first positioning grooves for positioning the raised portion on the self-detachable edge are provided in the first placement groove, and a first sealing ring positioning groove for positioning the sealing ring is provided at the center point of each first positioning groove; a first punching hole for the punching portion to pass through is provided at the center point of each first sealing ring positioning groove.

[0016] Furthermore, a plurality of first positioning protrusions for positioning the groove portion on the self-detaching edge are provided on the first upper mold positioning plate, and the position distribution of the first positioning protrusions is consistent with the position distribution of the first positioning grooves; a second sealing ring positioning groove for positioning the sealing ring is provided at the center point of each first positioning protrusion; a first through hole for the punching portion to pass through is provided at the center point of each second sealing ring positioning groove.

[0017] Furthermore, a second placement groove for placing the self-detaching edge is provided on the second lower mold positioning plate, and a plurality of second positioning grooves for positioning the protruding portion on the self-detaching edge are provided in the second placement groove, and a second punching hole for the punching portion to pass through is provided at the center point of each second positioning groove.

[0018] Furthermore, a plurality of second positioning protrusions for positioning the groove portion on the self-detaching edge are provided on the second upper mold positioning plate, and the position distribution of the second positioning protrusions is consistent with the position distribution of the second positioning grooves, and a second through hole for the punching portion to pass through is provided at the center point of each second positioning protrusion.

[0019] The beneficial effects of the utility model are as follows: when in use, the punching product is first placed into the first upper and lower modules, and then the first lifting plate is driven to move downward, so as to move downward with a plurality of first ejectors at the same time, and the first ejectors pass through the first upper and lower modules to remove the burrs on the sealing ring; after the burrs are removed, the punching product is taken out from the first upper and lower modules, so as to place the punching product into the second upper and lower modules, and then the second lifting plate is driven to move downward, so as to move downward with a plurality of second ejectors at the same time, and the first ejectors pass through the second upper and lower modules to punch the sealing ring on the punching product. The punching jig can remove the burrs on the sealing ring and punch the sealing ring at the same time, integrating the two functions into one, greatly improving the punching efficiency of the sealing ring; and, under the action of the first upper and lower modules and the second upper and lower modules, it can realize the precise positioning of the small sealing ring, thereby improving the punching efficiency of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0021] Figure 2 It is a schematic diagram of the top structure of the punching product of the utility model.

[0022] Figure 3 It is a schematic diagram of the bottom structure of the punching product of the utility model.

[0023] Figure 4 It is a schematic structural diagram of the first ejector pin and the second ejector pin of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the first lower mold positioning plate and the first upper mold positioning plate of the utility model.

[0025] Figure 6 It is an enlarged view of part A of the utility model.

[0026] Figure 7 This is a structural schematic diagram of the first lower mold positioning plate and the first upper mold positioning plate from another perspective of the utility model.

[0027] Figure 8 It is an enlarged view of part B of the utility model.

[0028] Fig. 9 It is a structural schematic diagram of the second lower mold positioning plate and the second upper mold positioning plate of the utility model.

[0029] Fig.10 It is an enlarged view of part C of the utility model.

[0030] Fig.11 This is a structural schematic diagram from another perspective of the second lower mold positioning plate and the second upper mold positioning plate of the utility model.

[0031] Fig.12 It is an enlarged view of part D of the utility model.

[0032] Reference numerals include:

[0033] 1. Support seat; 2. First lower die positioning plate; 201. First placement groove; 202. First positioning groove; 203. First sealing ring positioning groove; 204. First punching hole; 205. First positioning block; 3. First upper die positioning plate; 301. First positioning convex block; 302. Second sealing ring positioning groove; 303. First perforation; 4. Second lower die positioning plate; 401. Second placement groove; 402. Second positioning groove; 403. Second punching hole; 404. Second positioning block; 5. Second upper die positioning plate; 501 , second positioning protrusion; 502, second through hole; 6, first guide rod; 7, second guide rod; 8, first lifting plate; 9, second lifting plate; 10, first mounting plate; 11, second mounting plate; 12, first ejector pin; 121, punching part; 13, second ejector pin; 131, punching part; 14, first spring; 15, slide rod; 16, second spring; 17, waste collection frame; 18, sealing ring collection frame; 19, self-detaching edge; 20, sealing ring; 21, groove part; 22, raised part; 23, through hole. DETAILED DESCRIPTION

[0034] The following is a detailed description of a small sealing ring punching jig of the utility model in conjunction with the accompanying drawings.

[0035] In the production process of small sealing rings, it is necessary to first process the small sealing rings into Figure 2-3 The punching product includes a self-detaching edge 19 and a plurality of sealing rings 20 with burrs arranged on the self-detaching edge 19. The self-detaching edge 19 is a prior art and is a rubber mold. The rubber mold is generally outside the product (i.e., the sealing ring 20) during design.

[0036] like Figure 1 As shown, an embodiment of a small sealing ring punching jig of the utility model includes a support seat 1 and a first upper and lower module and a second upper and lower module arranged on the support seat 1, and the first upper and lower module and the second upper and lower module both play a role in positioning the punching product; wherein, the first upper and lower module includes a first lower die positioning plate 2 and a first upper die positioning plate 3, and the second upper and lower module includes a second lower die positioning plate 4 and a second upper die positioning plate 5, and the punching product is first placed between the first lower die positioning plate 2 and the first upper die positioning plate 3 to remove the burrs of the punching product. After the burrs are removed, the punching product is taken out from the first lower die positioning plate 2 and the first upper die positioning plate 3, and then the punching product is placed between the second lower die positioning plate 4 and the second upper die positioning plate 5 to punch the sealing ring 20 on the punching product.

[0037] In order to remove the burrs of the punched products and punch the sealing ring 20 on the punched products, a plurality of vertically arranged first guide rods 6 are fixedly provided on the first lower die positioning plate 2, a first lifting plate 8 placed above the first upper die positioning plate 3 is slidably provided on the first guide rods 6, a first mounting plate 10 is mounted on the first lifting plate 8, and a plurality of first ejectors 12 that can pass through the first upper die positioning plate 3 are fixedly provided on the first mounting plate 10. The first ejectors 12 are arranged vertically and used to remove the burrs on the punched products, and the first ejectors 12 are placed below the first mounting plate 10. The plurality of first ejectors 12 are mounted on the first lifting plate 8 through the first mounting plate 10, and when the first lifting plate 8 is driven to move up and down on the first guide rod 6, the plurality of first ejectors 12 are simultaneously moved up and down with it, and the first ejectors 12 pass through the first upper die positioning plate 3 to remove the burrs on the sealing ring 20.

[0038] Further, a plurality of second guide rods 7 arranged vertically are provided on the second lower die positioning plate 4, a second lifting plate 9 placed above the second upper die positioning plate 5 is slidably provided on the second guide rod 7, a second mounting plate 11 is installed on the second lifting plate 9, and a plurality of second ejectors 13 that can pass through the second upper die positioning plate 5 are fixedly provided on the second mounting plate 11, the second ejectors 13 are arranged vertically and used to punch the sealing ring 20 on the punched product, and the second ejectors 13 are placed below the second mounting plate 11. The plurality of second ejectors 13 are installed on the second lifting plate 9 through the second mounting plate 11, and when the second lifting plate 9 is driven to move up and down on the second guide rod 7, the plurality of second ejectors 13 are simultaneously moved up and down with it, and the second ejectors 13 pass through the second upper die positioning plate 5 to punch the sealing ring 20 on the punched product.

[0039] In order to fully hold down the punched product when removing the burrs and punching the sealing ring 20, a pressure component is provided between the first mounting plate 10 and the first upper die positioning plate 3 and between the second mounting plate 11 and the second upper die positioning plate 5. During the downward movement of the first lifting plate 8 and the second lifting plate 9, the pressure component applies a downward force to the first upper die positioning plate 3 and the second upper die positioning plate 5, so that the first upper die positioning plate 3 and the second upper die positioning plate 5 can fully hold down the punched product, thereby improving the effect of removing the burrs and punching the sealing ring 20. In addition, under the action of the pressure component, when it is necessary to open the first upper die positioning plate 3 and the second upper die positioning plate 5, the first lifting plate 8 and the second lifting plate 9 are driven to move upward, and the first upper die positioning plate 3 and the second upper die positioning plate 5 are moved upward, so as to place the punched product between the first lower die positioning plate 2 and the first upper die positioning plate 3 and between the second lower die positioning plate 4 and the second upper die positioning plate 5.

[0040] The pressure-applying component includes a plurality of slide bars 15 slidably arranged on the first lifting plate 8 and the second lifting plate 9. The slide bars 15 slidably arranged on the first lifting plate 8 are fixedly arranged on the first upper mold positioning plate 3, and the slide bars 15 slidably arranged on the second lifting plate 9 are fixedly arranged on the second upper mold positioning plate 5. Under the action of the slide bars 15, the first upper mold positioning plate 3 can slide up and down on the first lifting plate 8, and the second upper mold positioning plate 5 can slide up and down on the second lifting plate 9; in addition, a second spring 16 is provided on each slide bar 15, and a plurality of second springs 16 are respectively placed between the first lifting plate 8 and the first upper mold positioning plate 3 and between the second lifting plate 9 and the second upper mold positioning plate 5, so as to apply downward force to the first upper mold positioning plate 3 and the second upper mold positioning plate 5, so as to fully press the placed punching products.

[0041] In addition, each first guide rod 6 is provided with a first spring 14, and a plurality of first springs 14 are respectively placed between the first lifting plate 8 and the first lower die positioning plate 2 and between the second lifting plate 9 and the second lower die positioning plate 4. When the first lifting plate 8 and the second lifting plate 9 are driven to move downward, the first spring 14 is compressed. When the force applied to the first lifting plate 8 and the second lifting plate 9 is stopped, the first lifting plate 8 and the second lifting plate 9 are pushed upward to return to the initial position under the action of the compressed first spring 14. In addition, a waste collection frame 17 and a sealing ring collection frame 18 are placed on the support seat 1, and the waste collection frame 17 is placed below the first lower die positioning plate 2, and the sealing ring collection frame 18 is placed below the second lower die positioning plate 4. The waste collection frame 17 is used to collect the wool waste that is punched out, and the sealing ring collection frame 18 is used to collect the sealing ring 20 that is punched out first. After the waste collection frame 17 and the sealing ring collection frame 18 are filled, both can be taken out from the support seat 1.

[0042] like Figure 4 As shown, a punching portion 121 for punching the sealing ring 20 is provided at the bottom end of the first ejector pin 12. After the first ejector pin 12 passes through the first upper mold positioning plate 3, the burrs on the sealing ring 20 are removed. In addition, a punching portion 131 for punching the sealing ring 20 on the punched product is provided at the bottom end of the second ejector pin 13. After the punching portion 131 passes through the second upper mold positioning plate 5, the sealing ring 20 on the punched product is punched off.

[0043] In order to improve the positioning effect of the punched product, each sealing ring 20 arranged on the self-demolition edge 19 is provided with a groove portion 21 on the circumferential side, and the groove portion 21 is placed on the top of the self-demolition edge 19. A raised portion 22 is provided on the circumferential side of each sealing ring 20, and the raised portion 22 is placed on the bottom of the self-demolition edge 19. In addition, a plurality of through holes 23 are also provided on the self-demolition edge 19.

[0044] like Figure 5-6As shown, a first placement groove 201 for placing the self-detachable edge 19 is provided on the first lower mold positioning plate 2, and a plurality of first positioning grooves 202 for positioning the protrusions 22 on the self-detachable edge 19 are provided in the first placement groove 201, wherein a first sealing ring positioning groove 203 for positioning the sealing ring 20 is provided at the center point of each first positioning groove 202. After the self-detachable edge 19 is placed in the first placement groove 201, the plurality of protrusions 22 on the self-detachable edge 19 are respectively placed in different first positioning grooves 202, and the plurality of sealing rings 20 on the self-detachable edge 19 are respectively placed in different first sealing ring positioning grooves 203. Under the action of the first placement groove 201, the first positioning groove 202 and the first sealing ring positioning groove 203, the punched product can be accurately placed in the designated burr removal position. In addition, a first punching hole 204 for the punching part 121 to pass through is provided at the center point of each first sealing ring positioning groove 203, and the thickness of the punching part 121 is consistent with the aperture of the first punching hole 204. Similarly, the size of the burr on the center hole of the sealing ring 20 is consistent with the aperture of the first punching hole 204. Furthermore, a plurality of first positioning blocks 205 that can be embedded in the through hole 23 on the self-detaching edge 19 are provided in the first placement groove 201. After the self-detaching edge 19 is placed in the first placement groove 201, the first positioning block 205 is embedded in the through hole 23 on the punched product, further improving the positioning effect of the punched product.

[0045] like Figure 7-8As shown, a plurality of first positioning protrusions 301 for positioning the groove portion 21 on the self-detachable edge 19 are provided on the first upper mold positioning plate 3, and the position distribution of the first positioning protrusions 301 is consistent with the position distribution of the first positioning grooves 202. In addition, a second sealing ring positioning groove 302 for positioning the sealing ring 20 is provided at the center point of each first positioning protrusion 301; when the first lower mold positioning plate 2 and the first upper mold positioning plate 3 are molded together, the self-detachable edge 19 placed in the first placement groove 201 is pressed and positioned with the cooperation of the first positioning groove 202 and the first positioning protrusion 301, and the sealing ring 20 to be deburred is pressed and positioned with the cooperation of the first sealing ring positioning groove 203 and the second sealing ring positioning groove 302. Furthermore, a first through hole 303 for the punching portion 121 to pass through is provided at the center point of each second sealing ring positioning groove 302. After the first lower mold positioning plate 2 and the first upper mold positioning plate 3 are molded together, the first through hole 303 corresponds to the first punching hole 204. Specifically, after the punched product is placed at the designated burr removal position, the first lifting plate 8 is driven to move downward, along with a number of first ejector pins 12. The punching portion 121 on the first ejector pin 12 passes through the first through hole 303 to remove the burr at the center point of the sealing ring 20. The punched burr waste falls into the waste collection frame 17 through the first punching hole 204. After the removal is completed, the first lifting plate 8 is pushed to return to its initial position under the action of the first spring 14.

[0046] like Figure 9-10 As shown, a second placement groove 401 for placing the self-detaching edge 19 is provided on the second lower mold positioning plate 4, and a plurality of second positioning grooves 402 for positioning the protrusion 22 on the self-detaching edge 19 are provided in the second placement groove 401. In addition, a second punching hole 403 for the punching portion 131 to pass through is provided at the center point of each second positioning groove 402, and the thickness of the punching portion 131 is consistent with the aperture of the second punching hole 403. Similarly, the diameter of the sealing ring 20 is consistent with the aperture of the first punching hole 204. A plurality of second positioning blocks 404 that can be embedded in the through hole 23 on the punching product are also provided in the second placement groove 401. After the self-detaching edge 19 is placed in the second placement groove 401, the second positioning blocks 404 are embedded in the through hole 23 on the self-detaching edge 19 to position the self-detaching edge 19.

[0047] like Figure 11-12As shown, a plurality of second positioning protrusions 501 for positioning the groove portion 21 on the self-detaching edge 19 are provided on the second upper mold positioning plate 5, and the position distribution of the second positioning protrusions 501 is consistent with the position distribution of the second positioning grooves 402. In addition, a second through hole 502 for the punching portion 131 to pass through is provided at the center point of each second positioning protrusion 501. After the second lower mold positioning plate 4 and the second upper mold positioning plate 5 are molded together, the second through hole 502 corresponds to the second punching hole 403. Specifically, after the burrs on the sealing ring 20 are removed, the punched product is removed from the first lower mold positioning plate 2 and the first upper mold positioning plate 3. The punched product is taken out and placed between the second lower die positioning plate 4 and the second upper die positioning plate 5. The punched product is placed in the designated punching position. The second lifting plate 9 is then driven downward to move, together with a plurality of second ejector pins 13. The punching portion 131 on the second ejector pin 13 passes through the second perforation 502 to punch the sealing ring 20, so that the sealing ring 20 is separated from the self-detachable edge 19. The punched sealing ring 20 falls into the sealing ring collection frame 18 through the second punching hole 403. After the punching is completed, the first spring 14 is used to push the second lifting plate 9 to return to its initial position.

[0048] In summary, it can be seen that the utility model has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0049] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A small sealing ring punching jig, characterized in that: The invention comprises a support base (1), on which a first upper and lower die set and a second upper and lower die set for positioning punched products are arranged; A first lifting plate (8) capable of moving up and down is provided above the first upper and lower mold groups, and a plurality of first ejectors (12) capable of passing through the first upper and lower mold groups are installed on the first lifting plate (8) via a first mounting plate (10), wherein the first ejectors (12) are used to remove burrs on the sealing ring (20); A second lifting plate (9) capable of moving up and down is provided above the second upper and lower mold groups. A plurality of second ejectors (13) capable of passing through the second upper and lower mold groups are installed on the second lifting plate (9) via a second mounting plate (11). The second ejectors (13) are used to punch the sealing rings (20) on the punched products.

2. A small sealing ring punching jig according to claim 1, characterized in that: The first upper and lower mold assembly comprises a first lower mold positioning plate (2) and a first upper mold positioning plate (3), and the second upper and lower mold assembly comprises a second lower mold positioning plate (4) and a second upper mold positioning plate (5); the first lifting plate (8) is placed above the first upper mold positioning plate (3), and the first lifting plate (8) is slidably arranged on the first lower mold positioning plate (2); the second lifting plate (9) is placed above the second upper mold positioning plate (5), and the second lifting plate (9) is slidably arranged on the second lower mold positioning plate (4).

3. A small sealing ring punching jig according to claim 2, characterized in that: A pressure component is provided between the first mounting plate (10) and the first upper mold positioning plate (3) and between the second mounting plate (11) and the second upper mold positioning plate (5), and the pressure component is used to apply a downward force to the first upper mold positioning plate (3) and the second upper mold positioning plate (5).

4. A small sealing ring punching jig according to claim 2, characterized in that: A waste collection frame (17) and a sealing ring collection frame (18) are placed on the support seat (1), and the waste collection frame (17) is placed below the first lower mold positioning plate (2), and the sealing ring collection frame (18) is placed below the second lower mold positioning plate (4).

5. A small sealing ring punching jig according to claim 2, characterized in that: A punching portion (121) for punching a sealing ring (20) is provided at the bottom end of the first ejector pin (12), and a punching portion (131) for punching a sealing ring (20) on a punched product is provided at the bottom end of the second ejector pin (13).

6. A small sealing ring punching jig according to claim 5, characterized in that: The punched product comprises a self-detachable edge (19) and a plurality of sealing rings (20) with burrs arranged on the self-detachable edge (19); a groove portion (21) is arranged on the circumference of each sealing ring (20) arranged on the self-detachable edge (19), and the groove portion (21) is arranged on the top of the self-detachable edge (19); a protrusion portion (22) is arranged on the circumference of each sealing ring (20), and the protrusion portion (22) is arranged on the bottom of the self-detachable edge (19); and a plurality of through holes (23) are also arranged on the self-detachable edge (19).

7. A small sealing ring punching jig according to claim 6, characterized in that: A first placement groove (201) for placing the self-detaching edge (19) is provided on the first lower mold positioning plate (2), and a plurality of first positioning grooves (202) for positioning the protruding portion (22) on the self-detaching edge (19) are provided in the first placement groove (201), and a first sealing ring positioning groove (203) for positioning the sealing ring (20) is provided at the center point of each first positioning groove (202); and a first punching hole (204) for the punching portion (121) to pass through is provided at the center point of each first sealing ring positioning groove (203).

8. A small sealing ring punching jig according to claim 7, characterized in that: A plurality of first positioning protrusions (301) for positioning the groove portion (21) on the self-detachable edge (19) are provided on the first upper mold positioning plate (3), and the position distribution of the first positioning protrusions (301) is consistent with the position distribution of the first positioning grooves (202); a second sealing ring positioning groove (302) for positioning the sealing ring (20) is provided at the center point of each first positioning protrusion (301); and a first through hole (303) for the punching portion (121) to pass through is provided at the center point of each second sealing ring positioning groove (302).

9. A small sealing ring punching jig according to claim 6, characterized in that: A second placement groove (401) for placing the self-detaching edge (19) is provided on the second lower mold positioning plate (4), and a plurality of second positioning grooves (402) for positioning the protruding portion (22) on the self-detaching edge (19) are provided in the second placement groove (401), and a second punching hole (403) for the punching portion (131) to pass through is provided at the center point of each second positioning groove (402).

10. A small sealing ring punching jig according to claim 9, characterized in that: A plurality of second positioning protrusions (501) for positioning the groove portion (21) on the self-detaching edge (19) are provided on the second upper mold positioning plate (5), and the position distribution of the second positioning protrusions (501) is consistent with the position distribution of the second positioning grooves (402). A second through hole (502) for the punching portion (131) to pass through is provided at the center point of each second positioning protrusion (501).

Images