A punching and trimming die for a front-row headrest mounting bracket of an automobile and a machining method thereof

Abstract

The application discloses a punching and trimming die for a front-row headrest mounting support of an automobile and a processing method thereof, and relates to the technical field of automobile manufacturing. The punching and trimming die comprises a punching and trimming upper die and a matched lower die, the headrest support after being shaped is arranged on the matched lower die, and the punching and trimming upper die and the matched lower die are relatively moved to punch the headrest support; the punched headrest support is punched at the edge position of one side of the headrest support through a side punching die, and a plurality of staggered through holes punched on the headrest support are matched with the matched mounting parts correspondingly. The application provides the punching and trimming die for the front-row headrest mounting support of the automobile and the processing method thereof, a plurality of staggered through holes are formed on the headrest support through the punching and trimming die and the side punching die, and the headrest support is closely fixed and mounted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of punching and trimming die for headrest mounting bracket of front row of automobile. BACKGROUND

[0002] The headrest mounting bracket of front row of automobile is usually completed by cooperating with several dies, and the headrest bracket is installed by cooperating with other components through bolts after processing, and is only installed and fixed by processing threaded holes on the headrest bracket, so that the fixed phenomenon is not tight after installation; therefore, the existing processing die needs to be improved to promote the tightness of the processed headrest bracket after installation. SUMMARY

[0003] The present application provides a punching and trimming die for headrest mounting bracket of front row of automobile and a processing method thereof, and a plurality of staggered through holes are formed on the headrest bracket by the punching and trimming die and the side punching die, so as to tightly install the headrest bracket.

[0004] Technical scheme: in order to achieve the above purpose, the technical scheme of the present application is as follows:

[0005] A punching and trimming die for headrest mounting bracket of front row of automobile, comprising a punching and trimming die, the punching and trimming die comprises a punching and trimming upper die and a matching lower die, the headrest bracket after shaping is arranged on the matching lower die, and the punching and trimming upper die and the matching lower die move relatively to punch the headrest bracket; the edge position of one side of the headrest bracket after punching is punched by a side punching die, and a plurality of staggered through holes punched on the headrest bracket are matched with the components to be matched correspondingly.

[0006] Further, the punching and trimming upper die comprises a die plate body, a matching groove suitable for the headrest bracket is arranged in the middle of the die plate body, a matching notch is arranged on one side of the matching groove, a convex rib groove is arranged on the other side of the matching groove, the matching notch corresponds to the bottom of the headrest bracket, and the convex rib groove corresponds to the top of the headrest bracket; a convex plate block is arranged in the middle of the matching groove, and a plurality of matching punching blocks are arranged on the convex plate block; the matching lower die comprises a convex die body arranged on a fixed plate, the convex die body is arranged adaptively relative to the matching groove, a plurality of groove holes corresponding to the matching punching blocks are formed in the convex die body; the convex die body moves relatively with the matching groove to stamp on the headrest bracket, and the matching punching blocks punch the corresponding positions of the headrest bracket correspondingly.

[0007] Further, the matching punch block includes inner edge punch blocks and side edge punch blocks, a plurality of the inner edge punch blocks are arranged near the protruding ridge groove position, one side of the inner edge punch blocks extends to the matching groove bottom wall of the protruding plate side wall, the opposite sides of the inner edge punch blocks are located on both sides of the protruding ridge groove, the side edge punch block is arranged near the matching notch position, the height of the side edge punch block is higher than that of the inner edge punch block, the cross-sectional area of the side edge punch block is larger than that of the inner edge punch block, the opposite sides of a plurality of the side edge punch blocks extend to the matching groove bottom wall, the surface of the side edge punch block is provided with a stepped block, the stepped blocks on the adjacent side edge punch blocks are arranged away from each other, a cylindrical block is fixedly arranged on the side edge punch block, and the cylindrical block is arranged near the inner edge punch block.

[0008] Further, the surface of the male die body is adapted to the matching groove, a lower notch is formed on one side of the male die body, the notch is in a stepped shape, the slot hole includes a first corresponding slot and a second corresponding slot, the first corresponding slot is arranged at the inner edge position of the matching groove, a plurality of the first corresponding slots are respectively arranged in opposite matching relationship with the inner edge punch blocks, the second corresponding slot is arranged on the bottom surface of the lower notch, the second corresponding slot is located on both sides of the lower notch, a plurality of the second corresponding slots are respectively arranged in opposite matching relationship with the side edge punch blocks, a rectangular slot corresponding to the stepped block is arranged in the second corresponding slot, and a circular slot corresponding to the cylindrical block is arranged on the second corresponding slot.

[0009] Further, the male die body is arranged on the lower base plate, a plurality of split blocks are arranged on the lower base plate, the split blocks are located on both sides of the male die body, an opposite block is arranged on the lower base plate, the opposite block is located at one end of the male die body, and the opposite block is arranged in opposite relationship with the lower notch, the opposite block and the split blocks form an edge ring groove with the edge of the male die body, the protruding edge of the matching groove is adapted to the edge ring groove, a plurality of corresponding slot holes are arranged on the split blocks, and a plurality of protruding guide columns corresponding to the slot holes are arranged around the edge of the die body.

[0010] A corresponding ridge groove is arranged on the opposite block, a protruding ridge plate is arranged on the protruding ridge groove, the protruding ridge plate is arranged in opposite relationship with the corresponding ridge groove, and the distance between the protruding ridge plate and the matching groove corresponds to the edge ring groove position.

[0011] Further, the side punching die includes a lower male die seat and an upper female die plate, the surface of the lower male die seat arranged on the lower mounting plate is provided with a corresponding protruding block, and a fitting groove is arranged in the middle of one side edge of the lower male die seat; a matching groove corresponding to the fitting groove is arranged in the middle of one side of the upper female die plate; a punching block is arranged in the fitting groove and the sliding groove which are fitted together, a driving device arranged on the lower mounting plate drives the punching block to move into the fitting groove to punch the side edge of the headrest support.

[0012] Further, the punching block includes a composite connecting slider and a counter-punch plate, a driving shaft of the driving device is drivingly connected to one side of the connecting slider, the counter-punch plate is detachably arranged on the other side of the connecting slider, the counter-punch plate is provided with a corresponding sliding port at the bottom, and the bottom surface of the corresponding sliding port is arranged at a distance from the bottom surface of the embedding groove; the driving shaft drives the counter-punch plate to move away from one end of the connecting slider and embeds into the embedding groove to punch the headrest support.

[0013] Further, the corresponding protrusions include inner limiting blocks and edge adjusting blocks; a plurality of the inner limiting blocks correspond to the positions of the middle through holes of the headrest support, a plurality of the edge adjusting blocks are arranged at the positions on both sides of the headrest support, and the edges of the headrest support are adapted to be clamped on the surfaces of the edge adjusting blocks; the lower punch seat is provided with movable slot holes, the bottom of the edge adjusting block is arranged in the movable slot hole, the edge adjusting block is arranged close to the limiting block, and the driving device in the inner wall of the movable slot hole is drivingly connected to one side of the edge adjusting block; a plurality of the driving devices in the movable slot holes drive a plurality of corresponding edge adjusting blocks to move close to or away from each other.

[0014] Further, the processing method is as follows:

[0015] The first step is to arrange the pre-formed headrest support in the matching groove, arrange the side edges at the bottom of the headrest support in the matching notches, and arrange the protruding plate blocks to limit the headrest support correspondingly;

[0016] The second step is that when the matching groove and the punch body are relatively matched to punch the headrest support, a plurality of the inner edge punches and the side edge punches relatively punch the positions to be punched of the headrest support, and the waste after punching is correspondingly dropped into the first corresponding slot and the second corresponding slot;

[0017] The third step is to arrange the punched headrest support on the lower punch seat, arrange a plurality of corresponding protrusions to limit and stabilize the headrest support correspondingly, and then relatively match the lower punch seat and the upper concave die plate to extrude and stabilize the headrest support;

[0018] The fourth step is that the driving device in the movable slot hole drives the oppositely arranged edge adjusting blocks to move away from each other, the oppositely arranged edge adjusting blocks are matched and tightly abut against the headrest support, and the headrest support is further stabilized;

[0019] The fifth step is that the driving device drives the driving shaft to move, the driving shaft drives the counter-punch plate to move and embed into the embedding groove through the connecting slider, so as to punch the side edges of the headrest support.

[0020] Beneficial effects: the headrest support of the application is preformed after the shaping processing, then the preformed headrest support is arranged on the punching lower die, the punching upper die and the matched lower die move relatively to match and extrude the headrest support, at the same time, the punching upper die and the matched lower die can punch at the corresponding headrest support position to be punched, so as to punch a plurality of through holes, which can facilitate the headrest support to be installed with other components through the through holes; after the middle position of the headrest support is punched, the headrest support is arranged in the punching hole die, the side edge of the headrest support is punched by the side punching hole die, so that when installed, the headrest support can be installed through the through holes in the middle part and the through holes in the side edge, so that the headrest support and other components can be effectively installed to enhance the stability of the installation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure Figure 1 Figure is a matched lower die structure diagram;

[0022] Figure Figure 2 Figure is a punching upper die structure diagram;

[0023] Figure Figure 3 Figure is a punching and trimming die structure diagram;

[0024] Figure Figure 4 Figure is a punch body structure diagram;

[0025] Figure Figure 5 Figure is a die plate body structure diagram;

[0026] Figure Figure 6 Figure is a side punching hole die structure diagram;

[0027] Figure Figure 7 Figure is a lower punch seat structure diagram;

[0028] Figure Figure 8 Figure is an upper concave die plate structure diagram;

[0029] Figure Figure 9 Figure is an embedded groove structure diagram;

[0030] Figure Figure 10 Figure is an inner concave groove body structure diagram. DETAILED DESCRIPTION

[0031] The application will be further described below in combination with the drawings.

[0032] As shown in the Figures 1-10The application discloses a punching and trimming die for a front headrest mounting support of a car, which comprises a punching and trimming die 1, the punching and trimming die 1 comprises a trimming upper die 2 and a matched lower die 3, a headrest support after shaping is arranged on the matched lower die 3, and the trimming upper die 2 and the matched lower die 3 are relatively moved to trim the headrest support; the headrest support after trimming is trimmed at the edge position of one side of the headrest support through a side punching die 4, and a plurality of dislocated through holes punched out on the headrest support are matched with the matched mounting parts. The headrest support is preformed after shaping, then the preformed headrest support is arranged on the trimming lower die, the trimming upper die and the matched lower die are relatively moved to extrude the headrest support, and the trimming upper die and the matched lower die can punch the headrest support at the corresponding punching position in the process of extruding the headrest support, so that a plurality of through holes are punched out, and the headrest support can be mounted with other parts through the through holes. After the middle position of the headrest support is punched, the headrest support is arranged in a measuring punching die, and the side edge of the headrest support is punched through the side punching die, so that the headrest support can be mounted with other parts through the through holes in the middle position of the headrest support and the through holes in the side edge of the headrest support, and the mounting stability of the headrest support and other parts can be effectively improved.

[0033] The trimming upper die 2 comprises a die plate body 21, the die plate body 21 is provided with a matched recess 211 matched with the headrest support in the middle part, the matched recess 211 is provided with a matched notch 212 on one side, the matched recess 211 is provided with a convex ridge groove 213 on the other side, the matched notch 212 corresponds to the bottom of the headrest support, and the convex ridge groove 213 corresponds to the top of the headrest support; the matched recess 211 is provided with a convex plate block 214 in the middle part, and a plurality of matched punching blocks 215 are arranged on the convex plate block 214; the matched lower die 3 comprises a convex die body 32 arranged on a fixed plate 31, the convex die body 32 is arranged in the matched recess 211, a plurality of groove holes 321 corresponding to the matched punching blocks 215 are formed in the convex die body 32, the convex die body 32 is relatively moved with the matched recess 211 to stamp the headrest support, and the matched punching blocks 215 punch the corresponding position of the headrest support. The headrest support is arranged in the matched recess, the top position of the headrest support is embedded in the convex ridge groove, and the bottom position of the headrest support corresponds to the matched notch, when the matched recess and the convex die body are relatively matched to extrude and trim the headrest support, the convex plate block on the convex die body punches the punching position of the headrest support, so that the required through hole is punched out on the headrest support.

[0034] The matching punch block 215 includes inner edge punch blocks 216 and side punch blocks 217. Multiple inner edge punch blocks 216 are arranged near the ridge groove 213 and extend to the bottom of the matching groove 213 on one side of the protruding plate block 214. Multiple inner edge punch blocks 216 are arranged on opposite sides of the ridge groove 213. The side punch block 217 is arranged near the matching notch 212 and has a height higher than that of the inner edge punch block 216. The cross-sectional area of the side punch block 217 is larger than that of the inner edge punch block 216. Multiple side punch blocks 217 extend to the bottom of the matching groove 211 on the opposite side. The surface of the side punch block 217 is provided with a stepped block 218. The stepped blocks 218 on adjacent side punch blocks 217 are arranged on opposite sides. A cylindrical block 219 is fixed on the side punch block 217 and arranged near the inner edge punch block 216. By arranging inner edge punch blocks and side punch blocks on the protruding plate block and corresponding to the positions of the headrest support to be punched, the inner edge punch blocks can punch holes on the inner edge of the headrest support, and the side punch blocks can punch holes on the side of the headrest support. Thus, through holes are punched on multiple positions of the headrest support. The through holes can be tightly matched and installed during installation. The through hole positions punched by the inner edge punch blocks and the side punch blocks are arranged on opposite sides, so that the headrests are less likely to be loose after installation.

[0035] The surface of the male die body 32 is adapted to the matching groove 211. A lower notch 33 is formed on one side of the male die body 32 to form a stepped shape. The slot hole 321 includes a first corresponding slot 322 and a second corresponding slot 323. The first corresponding slot 322 is arranged at the inner edge of the matching groove 211. Multiple first corresponding slots 322 are arranged opposite to the inner edge punch blocks 216. The second corresponding slot 323 is arranged on the bottom surface of the lower notch 33 and on opposite sides of the lower notch 33. Multiple second corresponding slots 323 are arranged opposite to the side punch blocks 217. The second corresponding slot 323 is provided with a rectangular slot 324 corresponding to the stepped block 216. The second corresponding slot 323 is provided with a circular slot 325 corresponding to the cylindrical block 219. The lower notch is arranged on one side of the matching groove to form a stepped shape, which can confine the headrest support. The first corresponding slot corresponding to the inner edge punch block is arranged in the matching groove. The second corresponding slot corresponding to the side punch block is arranged in the lower notch. Thus, the headrest support can be punched at different heights at the same time, without distributed punching, which can avoid the punching position from being deviated and prevent the headrest support from being difficult to install after production.

[0036] The punch body 32 is arranged on the lower die plate 34; the lower die plate 34 is provided with a plurality of split block bodies 35, the plurality of split block bodies 35 are arranged at both sides of the punch body 32, the lower die plate 34 is provided with an opposite block body 36, the opposite block body 36 is arranged at one end of the punch body 32, and the opposite block body 36 is arranged opposite to the lower notch 33; the opposite block body 36 and the plurality of split block bodies 35 form an edge ring groove 324 with the edge of the punch body 32, the protruding edge of the matching recess groove 211 is adapted to the edge ring groove 324; a plurality of split block bodies 35 are provided with a plurality of corresponding slot holes 351, a plurality of protruding guide columns 352 corresponding to the slot holes 351 are arranged at the edge position of the die plate body 21; a plurality of split block bodies and the edge of the matching recess groove form an edge ring groove, when the headrest support is arranged on the matching recess groove, the edge of the headrest support can be clamped through the edge ring groove, thereby effectively avoiding the phenomenon that the headrest support is easy to deviate during punching, thereby avoiding the dislocation phenomenon of the punched through hole.

[0037] The opposite block body 36 is provided with a corresponding ridge groove 361, the convex ridge plate body 25 is arranged on the convex ridge groove 213, the convex ridge plate body 25 is arranged opposite to the corresponding ridge groove 361, and the distance between the convex ridge plate body 25 and the matching recess groove 211 corresponds to the position of the edge ring groove 324. When punching, the convex ridge plate body can be matched with the corresponding ridge groove accordingly, thereby being capable of punching the convex ridge position at the top of the headrest support, and facilitating the good matching installation of the convex ridge position at the top of the headrest support.

[0038] The side punching die 4 includes a lower punch seat 41 and an upper concave die plate 42, the surface of the lower punch seat 42 arranged on the lower mounting plate 43 is provided with a corresponding convex block 416, and the middle part of one side edge of the lower punch seat 41 is provided with an embedded groove 411; the inner concave groove body 422 of the upper concave die plate 42 is provided with a matching groove 423 opposite to the corresponding convex block 416, and the middle part of one side of the upper concave die plate 42 is provided with a sliding groove 421 corresponding to the embedded groove 411; the sliding channel formed by the embedded groove 411 and the sliding groove 421 is adapted to be provided with a punching block body 412, and the driving device on the lower mounting plate 43 drives the punching block body 412 to move and embed into the embedded groove 411 to punch the side edge of the headrest support. When side punching is performed, the headrest support after punching is arranged on the lower punch seat, then the upper concave die plate and the lower punch seat are matched and pressed to limit the headrest support, and the corresponding convex block passes through the through hole of the headrest support after punching, and then is embedded into the matching groove, thereby further limiting the headrest support, avoiding the phenomenon that the headrest support is easy to deviate, the driving device correspondingly drives the punching block body to move along the sliding channel and embed into the embedded groove, thereby being capable of punching the side edge of the headrest support, and a through hole is punched at the side edge position of the headrest support, and the through hole can be tightly matched and installed with other parts.

[0039] The punching block 412 includes a composite connecting slider 413 and a counter punching plate 414, the driving shaft of the driving device is drivingly connected with one side of the connecting slider 413, the counter punching plate 414 is detachably arranged on the other side of the connecting slider 413, the counter punching plate 414 is provided with a corresponding sliding port 415 at the bottom, and the bottom surface of the corresponding sliding port 415 is arranged at a distance from the bottom surface of the fitting groove 411; the driving shaft drives the counter punching plate 414 to move away from one end of the connecting slider 413 and embeds into the fitting groove 411 to punch the headrest support. The driving device drives the connecting slider to move the counter punching plate to punch the headrest support, so that a through hole can be punched on the side edge of the headrest support, and the headrest support is not easy to loosen during installation.

[0040] The corresponding convex block 416 includes an inner limiting block 417 and an edge adjusting block 418; a plurality of the inner limiting blocks 417 correspond to the positions of the through holes in the middle of the headrest support, a plurality of the edge adjusting blocks 418 are arranged at the positions on both sides of the headrest support, and the edges of the headrest support are adapted to be clamped on the surfaces of the edge adjusting blocks 418; the lower convex die seat 41 is provided with movable slot holes 44, the bottom of the edge adjusting block 418 is arranged in the movable slot hole 44 correspondingly, the edge adjusting block 418 is arranged close to the position of the limiting block 417, and the driving device is drivingly connected with one side of the edge adjusting block 418 on the inner wall of the movable slot hole 44. A plurality of driving devices in the movable slot holes 44 drive a plurality of corresponding edge adjusting blocks 418 to move close to or away from each other. When the headrest support is arranged in the fitting groove, the edges of the headrest support are clamped on the edge adjusting blocks correspondingly, and then the driving device in the movable slot hole can drive the edge adjusting block to adjust the relative edge adjusting blocks to move away from each other, so that the headrest support can be correspondingly clamped from the inside to the outside on both sides, and the headrest support can be clamped tightly, and the headrest support can be effectively prevented from deviating during side edge punching processing of the headrest support, so as to prevent the through hole after punching from being dislocated, so as to facilitate cooperation and installation.

[0041] The processing method is as follows: first step: the preformed headrest support is arranged in the fitting groove 211, the side edge of the bottom of the headrest support is arranged in the fitting notch 212, and the protruding plate 214 correspondingly limits the headrest support; the headrest support is arranged in the fitting groove, and the protruding plate is adapted to clamp the headrest support, then the fitting groove can be matched with the convex die body to extrude and limit the headrest support, and the clamping degree is strengthened.

[0042] Second step: when the matching recess 211 and the punch body 32 are relatively matched to punch the headrest support, the inner edge punch 216 and the side edge punch 217 relatively punch the to-be-punched position of the headrest support, and the waste after punching is correspondingly dropped into the first corresponding slot 322 and the second corresponding slot 323; the inner edge punch and the side edge punch correspondingly punch the corresponding position of the headrest support, and push the waste after punching into the first corresponding slot and the second corresponding slot, so as to complete the processing of the through hole.

[0043] Third step: the punched headrest support is arranged on the lower punch seat 41, a plurality of corresponding protrusions 416 correspondingly limit and stabilize the headrest support, and then the lower punch seat 41 and the upper recessed die plate 42 relatively match to extrude and stabilize the headrest support; a plurality of corresponding protrusions limit the headrest support on the lower punch seat, so as to prevent the headrest support from moving during punching;

[0044] Fourth step: the driving device in the movable slot hole 44 drives the oppositely arranged edge adjusting blocks 418 to move away, and the oppositely arranged edge adjusting blocks 418 are matched to abut against the headrest support, further stabilizing the headrest support; the oppositely arranged edge adjusting blocks move away from each other, abutting against the headrest support from the inside to the outside on both sides, so as to effectively prevent the headrest support from moving;

[0045] Fifth step: the driving device drives the driving shaft to move, the driving shaft drives the counter-punch plate 414 to move and embed into the embedded slot 411 through the connecting sliding block 413, so as to punch the side edge of the headrest support; the counter-punch plate is punched on the side edge of the headrest support, and a through hole can be punched on the side edge of the headrest support, so that the headrest support can be matched and installed with other parts through the through hole after processing is completed, so as to strengthen the stability of installation.

[0046] The above is only the preferred embodiment of the present application, and is not used to limit the present application. Those skilled in the art can make some improvements and changes without departing from the above principles of the present application, and these improvements and changes are also regarded as the protection scope of the present application.

Claims

1. A piercing and trimming die for an automobile front-row headrest mounting bracket, characterized by: The application relates to a punching and trimming die (1) which comprises a punching and trimming upper die (2) and a matching lower die (3), a headrest mounting support after shaping is arranged on the matching lower die (3), the punching and trimming upper die (2) and the matching lower die (3) are relatively moved to punch the headrest mounting support; the headrest mounting support after punching is punched at the edge position of one side of the headrest mounting support through a side punching die (4), and a plurality of dislocated through holes punched on the headrest mounting support are matched with corresponding installed parts; The punching and trimming upper die (2) comprises a die plate body (21), a matching recess (211) matched with the headrest mounting support is arranged in the middle of the die plate body (21), a matching notch (212) is arranged at one side of the matching recess (211), a convex ridge groove (213) is arranged at the other side of the matching recess (211), the matching notch (212) corresponds to the bottom of the headrest mounting support, and the convex ridge groove (213) corresponds to the top of the headrest mounting support; a convex plate block (214) is arranged in the middle of the matching recess (211), a plurality of matching punching blocks (215) are arranged on the convex plate block (214); the matching lower die (3) comprises a convex die body (32) arranged on a fixed plate (31), the convex die body (32) is arranged adaptively relative to the matching recess (211), and a plurality of groove holes (321) corresponding to the matching punching blocks (215) are formed in the convex die body (32); the convex die body (32) and the matching recess (211) are relatively moved to stamp the headrest mounting support; The matching punching block (215) comprises an inner edge punching block (216) and a side edge punching block (217), a plurality of the inner edge punching blocks (216) are arranged close to the position of the convex ridge groove (213), one side of the plurality of inner edge punching blocks (216) extends to the groove bottom of the matching recess (211) towards the side wall of the convex plate block (214); the plurality of inner edge punching blocks (216) are arranged relative to the positions on both sides of the convex ridge groove (213); the side edge punching block (217) is arranged close to the position of the matching notch (212), the height of the side edge punching block (217) is higher than that of the inner edge punching block (216), the cross-sectional area of the side edge punching block (217) is larger than that of the inner edge punching block (216); one side of the plurality of side edge punching blocks (217) extending away from each other extends to the groove bottom of the matching recess (211); the surface of the side edge punching block (217) is provided with a stepped block body (218); the stepped block bodies (218) on the adjacent side edge punching blocks (217) are arranged away from each other, and a cylindrical block (219) is fixedly arranged on the side edge punching block (217) and arranged close to the inner edge punching block (216).

2. The piercing and trimming die for the mounting bracket of the headrest of the front seat of an automobile according to claim 1, characterized in that: The punch body (32) surface is adapted to fit the groove (211), the punch body (32) one side is provided with lower notch (33) and forms ladder shape, the slot (321) includes first corresponding slot (322) and second corresponding slot (323); The first corresponding slot (322) is arranged at the inner edge position of the fitting groove (211), and a plurality of first corresponding slots (322) are respectively arranged in opposite fitting with the inner edge punch block (216); The second corresponding slot (323) is arranged on the bottom surface of the lower notch (33), and the second corresponding slot (323) is arranged at the both sides of the lower notch (33); A plurality of second corresponding slots (323) are respectively arranged in opposite fitting with the side edge punch block (217), and the second corresponding slot (323) is provided with a rectangular slot corresponding to the stepped block (218), and the second corresponding slot (323) is provided with a circular groove (325) corresponding to the cylindrical block (219).

3. The piercing and trimming die for the mounting bracket of the headrest of the front seat of an automobile according to claim 2, characterized in that: The punch body (32) is arranged on the lower pad plate (34); The lower pad plate (34) is provided with a plurality of split block bodies (35), and a plurality of split block bodies (35) are arranged at both sides of the punch body (32); The lower pad plate (34) is provided with an opposite block body (36), and the opposite block body (36) is arranged at one end of the punch body (32), and the opposite block body (36) is arranged opposite to the lower notch (33); The opposite block body (36) and the plurality of split block bodies (35) form an edge ring groove (324) with the edge of the punch body (32), and the protruding edge of the fitting groove (211) is adapted to the edge ring groove (324); A plurality of split block bodies (35) are provided with a plurality of corresponding slot holes (351), and the edge of the template body (21) is provided with a plurality of protruding guide columns (352) corresponding to the slot holes (351); The opposite block body (36) is provided with a corresponding rib groove (361), and the convex rib plate body (25) is arranged on the convex rib groove (213), and the convex rib plate body (25) is arranged opposite to the corresponding rib groove (361).

4. The piercing and trimming die for the mounting bracket of the headrest of the front seat of an automobile according to claim 3, characterized in that: The side punching die (4) includes a lower punch seat (41) and an upper concave die plate (42), and the lower punch seat (41) arranged on the lower mounting plate (43) is provided with a corresponding convex block (416) on the surface, and the lower punch seat (41) is provided with an embedded groove (411) in the middle of one side edge; The matching groove (423) corresponding to the corresponding convex block (416) is arranged in the inner concave groove body (422) of the upper concave die plate (42), and the upper concave die plate (42) is provided with a sliding groove (421) corresponding to the embedded groove (411) in the middle of one side; The cutting block body (412) is arranged in the sliding way combined by the embedded groove (411) and the sliding groove (421), and the driving device on the lower mounting plate (43) drives the cutting block body (412) to move and embed in the embedded groove (411) to cut the side edge of the headrest mounting bracket.

5. The piercing and trimming die for the mounting bracket of the headrest of the front seat of an automobile according to claim 4, characterized in that: The punching block (412) includes a composite connecting slider (413) and a counterpunch plate (414), a driving shaft of a driving device is drivingly connected to one side of the connecting slider (413), and the counterpunch plate (414) is detachably arranged on the other side of the connecting slider (413), the counterpunch plate (414) is provided with corresponding sliding ports (415) at the bottom, the bottom surfaces of the corresponding sliding ports (415) are arranged in a spaced manner with the bottom surface of the fitting groove (411), and the driving shaft drives the counterpunch plate (414) to move away from one end of the connecting slider (413) and embed into the fitting groove (411) to punch the headrest mounting bracket.

6. The piercing and trimming die of the mounting bracket of the headrest of the front seat of an automobile according to claim 5, characterized in that: The corresponding convex blocks (416) include inner limiting blocks (417) and edge adjusting blocks (418), a plurality of the inner limiting blocks (417) correspond to the positions of the through holes in the middle of the headrest mounting bracket, a plurality of the edge adjusting blocks (418) are arranged at the positions on both sides of the headrest mounting bracket, and the edges of the headrest mounting bracket are clamped on the surfaces of the edge adjusting blocks (418); the lower convex die seat (41) is provided with movable slot holes (44), the bottoms of the edge adjusting blocks (418) are correspondingly arranged in the movable slot holes (44), the edge adjusting blocks (418) are arranged close to the inner limiting blocks (417), and the driving devices in the inner walls of the movable slot holes (44) are drivingly connected to one side of the edge adjusting blocks (418); the driving devices in a plurality of the movable slot holes (44) drive a plurality of the corresponding edge adjusting blocks (418) to move close to or away from each other.

7. The method of claim 6, wherein the punch and trim die is for a headrest mounting bracket of a front seat of an automobile. The processing method is as follows: First step: the preformed headrest mounting bracket is arranged in the fitting groove (211), the side edges at the bottom of the headrest mounting bracket are arranged in the fitting notches (212), and the raised plate blocks (214) correspondingly limit the headrest mounting bracket; Second step: when the fitting groove (211) and the convex die body (32) are relatively fitted to punch the headrest mounting bracket, a plurality of the inner edge punches (216) and the side edge punches (217) relatively punch the positions to be punched of the headrest mounting bracket, and the waste after punching is correspondingly arranged in the first corresponding slot (322) and the second corresponding slot (323); Third step: the punched headrest mounting bracket is arranged on the lower convex die seat (41), a plurality of the corresponding convex blocks (416) correspondingly limit the headrest mounting bracket, and then the lower convex die seat (41) and the upper concave die plate (42) are relatively fitted to extrude and stabilize the headrest mounting bracket; Fourth step: the driving devices in the movable slot holes (44) drive the oppositely arranged edge adjusting blocks (418) to move away from each other, the oppositely arranged edge adjusting blocks (418) are fitted and tightly abut against the headrest mounting bracket, and the headrest mounting bracket is stabilized; Fifth step: the driving devices drive the driving shaft to move, the driving shaft drives the counterpunch plate (414) to move into the fitting groove (411) through the connecting slider (413), and the side edges of the headrest mounting bracket are punched.

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