Punching die for punching from inside to outside

Abstract

The utility model provides a punching die capable of punching from inside to outside, which comprises a first fixing seat provided with a plurality of punches extending in the horizontal direction and a stripper plate capable of moving along the punches in the horizontal direction. The die further comprises a female die mechanism, the female die mechanism comprises a female die plate moving in the horizontal direction, and the female die plate is provided with a female die hole allowing the punch to be embedded in. The device further comprises a translation base, the translation base comprises a first supporting block and a second supporting block which are arranged on the two sides of the first fixing base, the first supporting block and the second supporting block are used for supporting the safety airbag box body, and the female die plate moves in the horizontal direction and drives the translation base and the stripper plate to translate, so that the punch protrudes out of the stripper plate and is embedded into the female die hole. Due to the fact that punching is conducted from inside to outside, punching burrs extend from the containing cavity face of the safety air bag box body to the non-containing cavity face of the safety air bag box body, contact between the punching burrs and the safety air bag is avoided, the punching burrs do not need to be polished, and the production cost of the safety air bag box body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of production molds for airbag boxes, and particularly relates to a punching die for punching from the inside to the outside. Background Art

[0002] An airbag is a passive safety protection system. When used in conjunction with a seat belt, it can provide effective anti-collision protection for the occupant. When a car collides, the airbag in the car can reduce the head injury rate by 25% and the facial injury rate by about 80%. An airbag box is a carrier for holding an airbag. For example, Chinese patent document CN212148750U discloses a press riveting and assembling type airbag box.

[0003] The processing steps of the airbag box are as follows: First, a placement cavity for accommodating the airbag is formed by stamping; then, the airbag box is punched. These holes can be used to connect the airbag box with other components. However, traditional stamping dies all adopt a stamping method from top to bottom, which will cause burrs generated by punching on the surface of the placement cavity of the airbag box. These burrs need to be polished manually to avoid scratching the airbag. Therefore, the labor cost and the product processing time are increased, and the production cost of the airbag box is increased, which is not conducive to market competition. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the purpose of the present utility model is to propose a punching die for punching from the inside to the outside to solve the problems mentioned in the above background art section.

[0005] The present utility model is realized through the following technical solutions:

[0006] A punching die for punching from the inside to the outside includes a first fixed seat, the first fixed seat is provided with a plurality of punch heads extending in the horizontal direction, and a stripper plate that can move horizontally along the punch heads; it also includes a concave die mechanism, the concave die mechanism includes a concave template that moves horizontally, the concave template is provided with a concave die hole for the punch head to be embedded; it further includes a translation base, the translation base includes a first support block and a second support block arranged on both sides of the first fixed seat, the first support block and the second support block are used to support the airbag box, the concave template moves horizontally and drives the translation base and the stripper plate to translate, so that the punch head protrudes from the stripper plate and is embedded in the concave die hole.

[0007] Furthermore, a first resetting member is arranged between the first fixed seat and the stripper plate.

[0008] Furthermore, it also includes a fine-tuning insert group, which is arranged on the periphery of the first support block and can be lifted and moved along its height direction, and the fine-tuning insert group is provided with a guide portion which is narrow at the top and wide at the bottom.

[0009] Furthermore, it also includes a lifting plate, the lifting plate is provided with a first inclined surface, and the concave template is provided with a second inclined surface matching the first inclined surface, and the lifting plate moves downward and abuts against the second inclined surface to move the concave template toward the stripping plate.

[0010] Furthermore, it also includes a second fixing seat and a connecting column, the second fixing seat is provided with a first guide groove for guiding the movement of the concave template; the connecting column passes through the second fixing seat and is then fixedly connected to the concave template, and the connecting column sleeve is provided with a second resetting member for resetting the concave template.

[0011] Furthermore, the translation base also includes an annular plate sleeved on the outer periphery of the first fixed seat, and the annular plate is provided with a clearance groove for the translation base to perform horizontal movement.

[0012] Furthermore, it also includes a third fixing seat and a fourth fixing seat, the fourth fixing seat is provided with a second guide groove for guiding the movement of the annular plate, and a third reset member is provided between the annular plate and the third fixing seat.

[0013] Furthermore, the translation base also includes two pressing cylinders fixedly mounted on the annular plate, and the pressing cylinders are used to fix the airbag box body on the first supporting block and the second supporting block.

[0014] Furthermore, the concave template is provided with a blanking groove penetrating downward.

[0015] Furthermore, the die mechanism includes a clamping column and a die insert, the die insert is embedded in the die plate in the horizontal direction, the clamping column is embedded in the die plate in the vertical direction and clamps the die insert, and the die insert is formed with the die hole.

[0016] The beneficial effects of the present utility model are as follows: A punching die for punching holes from the inside outwards includes a first fixed seat, the first fixed seat is provided with a plurality of punches extending in the horizontal direction, and a stripping plate that can move horizontally along the punches; it also includes a concave die mechanism, the concave die mechanism includes a concave template that moves horizontally, and the concave template is provided with a concave die hole for the punches to be inserted into; it further includes a translation base, the translation base includes a first support block and a second support block arranged on both sides of the first fixed seat, the first support block and the second support block are used to support the airbag box body, the concave template moves horizontally and drives the translation base and the stripping plate to translate, so that the punches protrude from the stripping plate and are inserted into the concave die hole. Since the punching direction is from the inside downwards to the outside, the punching burrs extend from the placing cavity surface of the airbag box body towards the non-placing cavity surface, avoiding the contact between the punching burrs and the airbag, and the punching burrs do not need to be polished, reducing the production cost of the airbag box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the present utility model.

[0018] Figure 2 is an exploded view of the present utility model with the translation base disassembled.

[0019] Figure 3 is an exploded view of the first fixed seat, punches and stripping plate of the present utility model.

[0020] Figure 4 is a perspective view of the translation base of the present utility model.

[0021] Figure 5 is a perspective view of the concave die mechanism of the present utility model.

[0022] Figure 6 is a perspective view of the airbag box body of the present utility model.

[0023] Among them, the above-mentioned drawings include the following reference numerals:

[0024] 1. Connecting base; 11. First fixing base; 111. Punch; 112. Stripping plate; 113. First reset member; 12. Second fixing base; 13. Third fixing base; 131. Third reset member; 14. Fourth fixing base; 2. Die mechanism; 21. Die plate; 211. Second inclined surface; 212. Blanking groove; 22. Die insert; 221. Die hole; 23. Clamping post; 3. Translating base; 31. First support block; 32. Second support block; 321. Guide inclined surface; 33. First insert; 331. Guide portion; 34. Fourth reset member; 35. Annular plate; 351. Relief groove; 36. Pressing cylinder; 361. Rubber pad; 4. Lifting plate; 41. First inclined surface; 5. Connecting column; 51. Second reset member; 6. Airbag box body; 61. Placing surface. Detailed implementation manners

[0025] To make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It should be noted here that the descriptions of these embodiments are used to help understand the present utility model, but do not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] Refer to Figures 1 to 6 As shown, a punching die for punching from the inside to the outside includes a connecting base 1, a die mechanism 2 and a translating base 3. A first fixing base 11, a second fixing base 12, a third fixing base 13 and a fourth fixing base 14 are fixedly arranged at the upper end of the connecting base 1.

[0027] Among them, the first fixing base 11 is provided with a plurality of punches 111 extending in the horizontal direction, and a stripping plate 112 that can move horizontally along the punches 111. One end of the punches 111 is embedded in the stripping plate 112; the die mechanism 2 includes a die plate 21 that moves horizontally, and the die plate 21 is provided with a die hole 221 for the punches 111 to be embedded; the translating base 3 includes a first support block 31 and a second support block 32 arranged on both sides of the first fixing base 11. The first support block 31 and the second support block 32 are used to support the airbag box body 6. The die plate 21 moves horizontally and drives the translating base 3 and the stripping plate 112 to translate, so that the punches 111 protrude from the stripping plate 112 and are embedded in the die hole 221.

[0028] When the punching die of the present utility model is in use, the following working steps will be carried out: First, the airbag box body 6 is buckled onto the first support block 31 and the second support block 32. Second, the concave template 21 moves horizontally until it abuts against and pushes the first support block 31 and the second support block 32, and then the translation base 3 is translated. Third, after the translation base 3 is translated until the first support block 31 and the second support block 32 are flush with the stripping plate 112, they are then translated synchronously. Fourth, the punch 111 protrudes relative to the stripping plate 112 and is embedded in the die hole 221 to complete the punching of the side wall of the airbag box body 6. Fifth, the concave template 21 starts to return to its original position.

[0029] A first reset member 113 is provided between the first fixed seat 11 and the stripping plate 112. The first reset member 113 is preferably a polyurethane rubber pad, and the stripping plate 112 is reset by the first reset member 113.

[0030] Since there will be dimensional deviations in the airbag box body 6 during the stamping process, these errors will not affect the normal use of the airbag box body 6. However, during the punching process of the airbag box body 6, the first support block 31 and the second support block 32 cannot accurately cooperate with the airbag box body 6 with the above-mentioned dimensional deviations, which easily causes the airbag box body 6 to shake during the punching process, resulting in situations such as tearing of the punching hole shape. Therefore, in order to enable airbag box bodies 6 of various sizes to fit with the first support block 31 and the second support block 32, the present utility model designs the following structure: It further includes a fine-tuning insert block group. The fine-tuning insert block group is arranged along the perimeter of the first support block 31 and can move up and down along its height direction. The fine-tuning insert block group is provided with a guiding portion 331 that is narrower at the top and wider at the bottom, and the second support block 32 is provided with a guiding inclined surface 321 that is narrower at the top and wider at the bottom. When the airbag box body 6 is buckled onto the first support block 31 and the second support block 32, during the punching process, if there are dimensional deviations in the airbag box body 6, the fine-tuning insert block group moves downward relative to the first support block 31, and the guiding portion 331 abuts against the placement surface 61 (inner side surface) of the airbag box body 6, thereby preventing the airbag box body 6 from shaking relative to the lower module during the punching process and ensuring the integrity of the punching hole shape.

[0031] Among them, the fine-tuning insert block group includes two first insert blocks 33 symmetrically arranged on the front and rear end faces of the first support block 31 with respect to its center. The first insert blocks 33 can maintain the balance of the support for the airbag box body 6. A fourth reset member 34 is provided between the annular plate 35 and the first insert block 33. The fourth reset member 34 is preferably a spring.

[0032] In order to further ensure that the airbag box body 6 is stably buckled onto the first support block 31 and the second support block 32, the second support block 32 is provided with a guiding inclined surface 321 that is narrower at the top and wider at the bottom.

[0033] The lifting plate 4 is also included, and the lifting plate 4 can be lifted and lowered by existing methods such as a cylinder or a motor disposed above the lifting plate 4. The lifting plate 4 is provided with a first inclined surface 41, and the concave plate 21 is provided with a second inclined surface 211 matching the first inclined surface 41. The lifting plate 4 moves downward and abuts against the second inclined surface 211, so that the concave plate 21 moves toward the stripping plate 112. This driving method can make the punching die structure of the utility model compact and reduce space occupation.

[0034] The second fixing seat 12 and the connecting column 5 are also included. The second fixing seat 12 is provided with a first guide groove for guiding the movement of the concave template 21. The connecting column 5 passes through the second fixing seat 12 and is then fixedly connected to the concave template 21. The connecting column 5 is sleeved with a second reset member 51 for resetting the concave template 21. The second reset member 51 is preferably a spring. One end of the second reset member 51 abuts against the second fixing seat 12. The concave template 21 is reset after translation through the second reset member 51.

[0035] The translation base 3 further includes an annular plate 35 sleeved on the outer periphery of the first fixed base 11, and the annular plate 35 is provided with a clearance groove 351 for horizontal movement of the translation base 3. This arrangement can make the punching die structure of the utility model compact and reduce space occupation.

[0036] The third fixing seat 13 and the fourth fixing seat 14 are also included. The fourth fixing seat 14 is provided with a second guide groove for guiding the movement of the annular plate 35. The fourth fixing seat 14 is an L-shaped plate, which is pressed on the top of the annular plate 35, thereby limiting the movement trajectory of the annular plate 35. A third reset member 131 is provided between the annular plate 35 and the third fixing seat 13. The third reset member 131 is preferably a spring, and the third reset member 131 is used to reset the translation base 3 after translation.

[0037] The translation base 3 further includes two pressing cylinders 36 fixedly mounted on the annular plate 35. The pressing cylinders 36 are provided with rubber pads 361 for pressing the airbag box body 6. The rubber pads 361 can prevent the airbag box body 6 from deforming during the pressing process. The airbag box body 6 is stably buckled and fixedly mounted on the first support block 31 and the second support block 32 by the pressing cylinders 36, so as to prevent the airbag box body 6 from deviating during the punching process.

[0038] The concave plate 21 is provided with a blanking slot 212 which is arranged to penetrate downwards. When the punching is completed, the waste sheet is discharged from the punching die through the blanking slot 212.

[0039] The female die mechanism 2 includes a clamping post 23 and a female die insert 22. The female die insert 22 is embedded in the female die plate 21 in the horizontal direction. The clamping post 23 is embedded in the female die plate 21 in the vertical direction and clamps the female die insert 22, preventing the female die insert 22 from detaching from the female die plate 21 through the clamping post 23. Through the above structure, a simple and fixed connection among the clamping post 23, the female die insert 22, and the female die plate 21 is achieved. Moreover, the female die insert 22 can be made of a material with higher wear resistance and higher strength relative to the female die plate 21, reducing the overall manufacturing cost. Additionally, the female die insert 22 is formed with the above-mentioned female die hole 221.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0041] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0042] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A punching die for punching from inside to outside, characterized in that: It comprises a first fixed seat (11), wherein the first fixed seat (11) is provided with a plurality of punches (111) extending in a horizontal direction, and a stripping plate (112) movable in a horizontal direction along the punches (111); It also comprises a die mechanism (2), the die mechanism (2) comprising a die plate (21) that moves in a horizontal direction, the die plate (21) being provided with a die hole (221) for the punch (111) to be embedded; The invention also comprises a translation base (3), the translation base (3) comprising a first support block (31) and a second support block (32) arranged on both sides of the first fixed seat (11), the first support block (31) and the second support block (32) being used to support the airbag box body (6), the concave mold plate (21) moving in the horizontal direction and driving the translation base (3) and the stripper plate (112) to translate, so that the punch (111) protrudes from the stripper plate (112) and is embedded in the concave mold hole (221).

2. A punching die for punching from inside to outside according to claim 1, characterized in that: A first resetting member (113) is provided between the first fixing seat (11) and the stripping plate (112).

3. A punching die for punching from inside to outside according to claim 1, characterized in that: It also comprises a fine-tuning insert group, which is arranged on the periphery of the first support block (31) and can be lifted and lowered along its height direction, and the fine-tuning insert group is provided with a guide portion (331) which is narrow at the top and wide at the bottom.

4. A punching die for punching from inside to outside according to any one of claims 1 to 3, characterized in that: It also comprises a lifting plate (4), the lifting plate (4) being provided with a first inclined surface (41), the concave plate (21) being provided with a second inclined surface (211) matching the first inclined surface (41), and the concave plate (21) being moved toward the stripping plate (112) by the lifting plate (4) moving downward and abutting against the second inclined surface (211).

5. A punching die for punching from inside to outside according to claim 4, characterized in that: It also comprises a second fixing seat (12) and a connecting column (5), wherein the second fixing seat (12) is provided with a first guide groove for guiding the movement of the concave template (21); the connecting column (5) passes through the second fixing seat (12) and is then fixedly connected to the concave template (21), and the connecting column (5) is sleeved with a second resetting member (51) for resetting the concave template (21).

6. A punching die for punching from inside to outside according to any one of claims 1 to 3, characterized in that: The translation base (3) further comprises an annular plate (35) sleeved on the outer circumference of the first fixed base (11), the annular plate (35) being provided with a clearance groove (351) for the translation base (3) to perform horizontal movement.

7. A punching die for punching from inside to outside according to claim 6, characterized in that: It also comprises a third fixing seat (13) and a fourth fixing seat (14), the fourth fixing seat (14) being provided with a second guide groove for guiding the movement of the annular plate (35), and a third resetting member (131) being provided between the annular plate (35) and the third fixing seat (13).

8. A punching die for punching from inside to outside according to claim 6, characterized in that: The translation base (3) further comprises two pressing cylinders (36) fixedly mounted on the annular plate (35), wherein the pressing cylinders (36) are used to fix the airbag box body (6) to the first support block (31) and the second support block (32).

9. A punching die for punching from inside to outside according to any one of claims 1 to 3, characterized in that: The concave template (21) is provided with a blanking groove (212) penetrating downward.

10. A punching die for punching from inside to outside according to any one of claims 1 to 3, characterized in that: The die mechanism (2) comprises a clamping column (23) and a die insert (22); the die insert (22) is embedded in the die plate (21) in the horizontal direction; the clamping column (23) is embedded in the die plate (21) in the vertical direction and clamps the die insert (22); the die insert (22) is formed with the die hole (221).

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