A punching die for an automobile door part

Abstract

The application provides a punching die of an automobile door piece, and belongs to the technical field of stamping dies. The punching die of the automobile door piece comprises an upper die base, a punch, a punch backing plate, a punch fixing plate, a pressing plate, a pressing plate fixing plate, a concave die, a concave die backing plate and a lower die base. Two hole grooves are formed in the concave die, and a concave die insert is clamped in the hole grooves. A punching hole for inserting the punch is formed in the concave die insert. A clamp mechanism for clamping two automobile door pieces at the same time is arranged on the concave die. The clamp mechanism comprises a left air cylinder, a right air cylinder and a center positioning assembly. The left air cylinder, the right air cylinder and the center positioning assembly are fixed on the concave die. The left air cylinder and the right air cylinder are located on the two sides of the center positioning assembly. The telescopic rods of the left air cylinder and the right air cylinder are respectively fixed with pressing blocks at the front ends of the telescopic rods, and the pressing blocks can extrude the automobile door pieces to the side surface of the center positioning assembly. The automobile door pieces can be quickly and accurately positioned, and displacement is not prone to occurring during the punching process. The two automobile door pieces can be positioned and punched at the same time, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of stamping die, and relates to a punching die for an automobile door part. BACKGROUND

[0002] The automobile door part is a special-shaped part, and is used for connecting a door and a vehicle body. The automobile door part comprises a flat bottom plate body and two connecting plates. The two connecting plates are parallel to each other and are fixed perpendicularly on the bottom plate body. A positioning groove is arranged between the two connecting plates. Mounting holes are formed on the bottom plate body and the connecting plates. The mounting holes are formed by a punching die. The existing punching die is difficult to position the automobile door part. A special clamp is needed. Once the size or hole position is changed, the whole clamp or even the whole die needs to be redesigned. Moreover, the punching die can only punch one punching part at a time. The automobile door part needs to be manually placed on the accurate punching position, and the production efficiency is low. SUMMARY

[0003] The purpose of the application is to solve the above problems existing in the prior art. The punching die for the automobile door part is simple and fast to load. The two automobile door parts can be accurately positioned and punched at the same time, and the production efficiency is greatly improved.

[0004] The purpose of the application can be achieved by the following technical scheme: a punching die for an automobile door part, comprising an upper die seat, a punch, a punch backing plate, a punch fixing plate, a pressing plate, a pressing plate fixing plate, a concave die, a concave die backing plate and a lower die seat, characterized in that the upper die seat, the punch backing plate and the punch fixing plate are sequentially fixed by bolts. The punch is arranged on the punch fixing plate. The upper end of the punch abuts against the punch backing plate. The upper die seat is further provided with a guide column. The pressing plate is fixed on the pressing plate fixing plate. The pressing plate fixing plate is located below the punch fixing plate and is in sliding cooperation with the guide column. The lower die seat is provided with a guide sleeve in sliding cooperation with the guide column. The upper die seat is provided with a limiting pin shaft. The lower end of the limiting pin shaft penetrates through the pressing plate fixing plate and is connected with a limiting disc. Spring holes are formed in the punch backing plate and the punch fixing plate. Support springs abutting against the pressing plate are arranged in the spring holes.

[0005] The concave die, the concave die backing plate and the lower die seat are sequentially fixed together by bolts. Two hole grooves are formed in the concave die. Concave die inserts are clamped in the hole grooves. Punching holes are formed in the concave die inserts for the punch to penetrate. A clamp mechanism for clamping the two automobile door parts is arranged on the concave die. The clamp mechanism comprises a left air cylinder, a right air cylinder and a center positioning assembly. The left air cylinder, the right air cylinder and the center positioning assembly are fixed on the concave die. The left air cylinder and the right air cylinder are located on the two sides of the center positioning assembly. The front ends of the extension rods of the left air cylinder and the right air cylinder are respectively fixed with pressing blocks capable of extruding the automobile door parts on the side surfaces of the center positioning assembly.

[0006] The automobile door piece is placed on the concave die, the left cylinder and the right cylinder are started, the compression block pushes the automobile door piece forward and clamps it together with the center positioning assembly, so that the automobile door piece cannot move horizontally. Then the punch drives the upper die seat to descend, the pressure plate with the pressure plate is in contact with the concave die in priority, the pressure plate presses the automobile door piece, so that the automobile door piece cannot shake up and down, the upper die seat continues to descend, and the support spring is compressed by the pressure plate, so that the support spring is shrunk until the punch penetrates through the automobile door piece and is inserted into the punching hole to complete the punching process.

[0007] Further, the center positioning assembly comprises a positioning base plate, a positioning seat, a rotating rod and a rotating spring. The positioning seat is fixed on the positioning base plate by bolts. The positioning seat is provided with an installation groove. The two ends of the installation groove are respectively connected with positioning blocks in a rotating mode. The concave die is provided with an ejection hole. The rotating rod and the rotating spring are located in the ejection hole. The upper end of the rotating rod abuts against the tail of the positioning block. The upper end of the rotating spring abuts against the rotating rod. The lower end of the rotating spring abuts against the concave die backing plate.

[0008] The rotating spring applies force to the lower end of the rotating rod, so that the rotating rod has a tendency to move upward. The upper end of the rotating rod acts on the positioning block, so that the front end of the positioning block abuts against the positioning seat downward. When the automobile door piece is positioned, the front end of the positioning block is prevented from swinging upward. After the punching is completed, the compression block retreats. At this time, the worker can lift the automobile door piece upward. The automobile door piece drives the positioning block to swing upward and rotate, so that the rotating spring is compressed. Until the front end of the positioning block is separated from the automobile door piece, the rotating spring pushes the rotating rod to move upward, drives the positioning block to rotate, and makes the positioning block return to the horizontal position.

[0009] Further, the front end of the positioning block is conical. The positioning block can be clamped into the positioning groove of the automobile door piece. The two side faces of the positioning block abut against the groove walls of the positioning groove. The tail of the positioning block is provided with an axle hole. An axle bolt is arranged in the axle hole.

[0010] The positioning block has a conical front end, which can facilitate the positioning block to slide into the positioning groove quickly and accurately. The position of the automobile door piece does not need to be adjusted in advance. The positioning groove does not need to be aligned with the positioning block. The requirement for the position of the automobile door piece is relatively loose.

[0011] Further, the upper end face of the concave die insert block is flush with the concave die. The upper end face of the concave die insert block abuts against the bottom face of the positioning base plate.

[0012] The positioning base plate presses the concave die insert block, so that the concave die insert block is prevented from separating from the hole groove. The automobile door piece can be easily slid onto the concave die insert block.

[0013] Further, the front end of the compression block has two extrusion heads protruding forward. The positioning base plate is isosceles trapezoidal. The positioning base plate has two protruding stoppers on the two sides.

[0014] Further, the two extrusion heads are arranged in front of and behind each other, the extrusion heads have extrusion surfaces at the front ends, the extrusion surfaces of the two extrusion heads are located in the same plane, the two stop heads are arranged in front of and behind each other, the stop heads have abutting surfaces at the front ends, the abutting surfaces of the two stop heads are located in the same plane, and the extrusion surfaces of the extrusion heads and the abutting surfaces of the stop heads are parallel to each other.

[0015] Since the bottom plate body of the automobile door part and the positioning groove have a certain angle, in order to make the positioning groove and the positioning block be in the same straight line, the bottom plate body needs to be moved obliquely, so the extrusion heads of the pressing block are arranged in front of and behind each other, and the automobile door part can be pushed obliquely.

[0016] Further, the pressing material fixing plate is provided with an embedded hole, the pressing plate is embedded into the embedded hole and fixed by bolts.

[0017] Further, the pressing plate is fixed with a protruding extrusion stud, the die is provided with a vertical sliding hole, the lower die seat is slidably provided with a limiting bolt penetrating through the die backing plate, a rebound block is arranged in the vertical sliding hole, the rebound block is fixed to the upper end of the limiting bolt, an upward spring is sleeved on the limiting bolt, the lower end of the upward spring abuts against the lower die seat, and the upper end of the upward spring abuts against the lower end surface of the rebound block, and the extrusion stud can be inserted into the vertical sliding hole and push the rebound block downward when the extrusion stud moves downward.

[0018] Further, the pressing plate is provided with a pressing groove, and the bottom wall of the pressing groove can abut against the upper surface of the automobile door part after the pressing plate is lowered.

[0019] Further, the die is provided with a plurality of limiting strips located on both sides of the die insert. The limiting strips facilitate workers to place the automobile door part, and the automobile door part can be placed on the die between the two limiting strips.

[0020] Compared with the prior art, the punching die for the automobile door part has the following advantages:

[0021] 1. The inclined automobile door part is pushed forward by the cylinder, so that the positioning block can accurately find and insert into the positioning groove of the automobile door part, rapid and accurate positioning is achieved, displacement is not easy to occur during punching, positioning and punching of two automobile door parts are performed at a time, and production efficiency is improved.

[0022] 2. When the automobile door part is placed, only the correct orientation of the automobile door part needs to be determined, the automobile door part is pushed forward by the cylinder, and then the positioning block can naturally slide into the positioning groove due to the tapered front end, automatic positioning is achieved, and the feeding speed is greatly improved.

[0023] 3. The positioning block in the positioning groove prevents the automobile door part from moving left and right, the pressing plate presses the automobile door part from above, the automobile door part does not shake up and down, and the punching precision is improved.

[0024] 4. Since the positioning block is pressed on the automobile door part when punching, it is inconvenient to take out the automobile door part. In order to take the material conveniently, the positioning block is designed to rotate around the rotating shaft bolt, and is abutted against the tail end of the positioning block through the rotating rod, and the automobile door part can be directly taken up, after taking the material, the positioning block is placed back to the original position through the rotating spring, so that the purpose of taking the material quickly and conveniently is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the structure diagram of the punching die of the automobile door part.

[0026] Figure 2 is the front view of the punching die of the automobile door part.

[0027] Figure 3 is the transverse sectional view of the punching die of the automobile door part.

[0028] Figure 4 is the longitudinal sectional view of the punching die of the automobile door part.

[0029] Figure 5 is the internal structure diagram of the punching die of the automobile door part.

[0030] Figure 6 is the structure diagram of the concave die.

[0031] Figure 7 is the structure diagram of the pressing plate.

[0032] Figure 8 is the top view of the center positioning assembly.

[0033] Figure 9 is the perspective view of the center positioning assembly.

[0034] Figure 10 is the structure diagram of the pressing block.

[0035] Figure 11 is the structure diagram of the automobile door part.

[0036] In the figure, 1, upper die holder; 2, punch; 3, punch backing plate; 4, punch fixing plate; 5, pressure plate; 51, extrusion stud; 52, pressure recess; 6, pressure fixing plate; 7, concave die; 71, vertical sliding hole; 72, limiting bolt; 73, rebound block; 74, push spring; 75, limiting strip; 8, concave die backing plate; 9, lower die holder; 10, guide column; 11, guide sleeve; 12, limiting pin; 13, limiting disc; 14, supporting spring; 15, concave die insert; 16, blanking hole; 17, left air cylinder; 18, right air cylinder; 19, center positioning assembly; 191, positioning base plate; 192, positioning seat; 193, rotating rod; 194, rotating spring; 195, mounting groove; 196, positioning block; 197, stop head; 20, compression block; 201, extrusion head; 21, automobile door part; 211, positioning groove. DETAILED DESCRIPTION

[0037] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0038] As shown in Figure 1 , Figure 2 , Figure 5 , the punching die of the automobile door includes an upper die holder 1, a punch 2, a punch backing plate 3, a punch fixing plate 4, a pressure plate 5, a pressure fixing plate 6, a concave die 7, a concave die backing plate 8, and a lower die holder 9. The upper die holder 1, the punch backing plate 3, and the punch fixing plate 4 are sequentially fixed by bolts. The punch 2 is provided on the punch fixing plate 4. The upper end of the punch 2 abuts against the punch backing plate 3. The upper die holder 1 is further provided with a guide column 10. The pressure plate 5 is fixed on the pressure fixing plate 6. The pressure fixing plate 6 is located below the punch fixing plate 4 and is in sliding cooperation with the guide column 10. The lower die holder 9 is provided with a guide sleeve 11 which is in sliding cooperation with the guide column 10. The upper die holder 1 is provided with a limiting pin 12. The lower end of the limiting pin 12 is connected to a limiting disc 13 after penetrating through the pressure fixing plate 6. Spring holes are provided on the punch backing plate 3 and the punch fixing plate 4. The spring holes are provided with supporting springs 14 which abut against the pressure plate 5.

[0039] The concave die 7, the concave die backing plate 8, and the lower die holder 9 are sequentially fixed together by bolts. Two hole grooves are provided on the concave die 7. The concave die insert 15 is clamped in the hole grooves. The concave die insert 15 is provided with a blanking hole 16 for the punch 2 to insert. The concave die 7 is provided with a clamp mechanism for clamping two automobile door parts 21 at the same time. The clamp mechanism includes a left air cylinder 17, a right air cylinder 18, and a center positioning assembly 19. The left air cylinder 17, the right air cylinder 18, and the center positioning assembly 19 are all fixed on the concave die 7. The left air cylinder 17 and the right air cylinder 18 are located on both sides of the center positioning assembly 19. The front ends of the extension rods of the left air cylinder 17 and the right air cylinder 18 are respectively fixed with compression blocks 20 which can extrude the automobile door parts 21 to the side of the center positioning assembly 19.

[0040] As shown in Figure 3 , Figure 8 , Figure 9 , Figure 10 , the center positioning assembly 19 comprises a positioning base plate 191, a positioning seat 192, a rotating rod 193 and a rotating spring 194, the positioning seat 192 is fixed on the positioning base plate 191 by bolts, the positioning seat 192 is provided with a mounting groove 195, both ends of the mounting groove 195 are rotatably connected with positioning blocks 196, the die 7 is provided with an ejection hole, the rotating rod 193 and the rotating spring 194 are located in the ejection hole, the upper end of the rotating rod 193 abuts against the tail of the positioning block 196, the upper end of the rotating spring 194 abuts against the rotating rod 193, and the lower end of the rotating spring 194 abuts against the die backing plate 8.

[0041] As shown in Figure 9 , the front end of the positioning block 196 is tapered, the positioning block 196 can be clamped into the positioning groove 211 of the automobile door part 21, the two side faces of the positioning block 196 abut against the groove walls of the positioning groove 211, the tail of the positioning block 196 is provided with an axle hole, a rotating shaft bolt is arranged in the axle hole, and the positioning block 196 rotates around the rotating shaft bolt.

[0042] The positioning block 196 has a tapered front end, which can facilitate the positioning block 196 to quickly and accurately slide into the positioning groove 211, without the need to adjust the position of the automobile door part 21 in advance or align the positioning groove 211 with the positioning block 196, and the requirement for the position of the automobile door part 21 is relatively loose.

[0043] The upper end face of the die insert 15 is flush with the die 7, and the upper end face of the die insert 15 abuts against the bottom face of the positioning base plate 191. The positioning base plate 191 presses the die insert 15 to avoid the die insert 15 from separating from the hole groove, and the automobile door part 21 can be easily slid onto the die insert 15.

[0044] As shown in Figure 9 , Figure 10 , the front end of the pressing block 20 has two extrusion heads 201 protruding forward, the positioning base plate 191 is isosceles trapezoidal, and the positioning base plate 191 has two protruding stop heads 197 on the two sides. The two extrusion heads 201 are arranged in front of and behind each other, the extrusion head 201 has an extrusion face at the front end, the extrusion faces of the two extrusion heads 201 are located on the same plane, the two stop heads 197 are arranged in front of and behind each other, the stop head 197 has an abutting face at the front end, the abutting faces of the two stop heads 197 are located on the same plane, and the extrusion face of the extrusion head 201 and the abutting face of the stop head 197 are parallel to each other.

[0045] As shown in Figure 11 , the front end of the positioning block 196 is tapered, the positioning block 196 can be clamped into the positioning groove 211 of the automobile door part 21, the two side faces of the positioning block 196 abut against the groove walls of the positioning groove 211, the tail of the positioning block 196 is provided with an axle hole, a rotating shaft bolt is arranged in the axle hole, and the positioning block 196 rotates around the rotating shaft bolt.As shown, since there is a certain angle between the bottom plate body of the car door component 21 and the positioning groove 211, in order to make the positioning groove 211 and the positioning block 196 on the same straight line, the bottom plate body needs to move obliquely. Therefore, the pressing head 201 of the pressing block 20 is set one in front and one behind, which can push the car door component 21 forward obliquely.

[0046] The pressure plate 6 has a recessed hole, and the pressure plate 5 is embedded into the recessed hole and fixed with bolts.

[0047] like Figure 4 As shown, a protruding extrusion head 51 is fixed on the pressure plate 5, a vertical sliding hole 71 is opened on the die 7, a limiting bolt 72 that passes through the die pad 8 is slidably provided on the lower die base 9, a spring block 73 is provided in the vertical sliding hole 71, the spring block 73 is fixed to the upper end of the limiting bolt 72, an upward push spring 74 is sleeved on the limiting bolt 72, the lower end of the upward push spring 74 abuts against the lower die base 9, and the upper end of the upward push spring 74 abuts against the lower end face of the spring block 73. When the extrusion head 51 moves down, it can be inserted into the vertical sliding hole 71 and push the spring block 73 down.

[0048] like Figure 7 As shown, the pressure plate 5 has a pressure groove 52. After the pressure plate 5 is lowered, the bottom wall of the pressure groove 52 can abut against the upper surface of the car door component 21.

[0049] like Figure 6 As shown, the die 7 has several limiting strips 75, which are located on both sides of the die insert 15. The limiting strips 75 facilitate the placement of the car door component 21 by the worker, who can place the car door component 21 on the die 7 between two limiting strips 75.

[0050] Work flow: the automobile door piece 21 is placed on the concave die 7, the left cylinder 17 and the right cylinder 18 are started, the pressing block 20 pushes the automobile door piece 21 forward, the extrusion head 201 of the pressing block 20 pushes the inclined automobile door piece 21 to move forward, the front end of the positioning block 196 is inserted into the positioning groove 211 on the automobile door piece 21 during the movement, until the automobile door piece 21 abuts against the stop head 197, the positioning process is completed, and the automobile door piece 21 cannot move horizontally. Then the punch drives the upper die seat 1 to descend, the pressing material fixed plate 6 with the pressing plate 5 preferentially contacts the concave die 7, the pressing plate 5 presses the automobile door piece 21, so that the automobile door piece 21 cannot shake up and down, the upper die seat 1 continues to descend, and because of the existence of the supporting spring 14, the pressing plate 5 extrudes the supporting spring 14 to make the supporting spring 14 contract, until the punch 2 penetrates through the automobile door piece 21 and is inserted into the blanking hole 16, and the punching process is completed. The upper die seat 1 moves upward, the return spring 74 pushes the return block 73 to rise, the return block 73 pushes the extrusion column head 51 away from the vertical sliding hole 71, so that the pressing plate 5 is separated from the concave die 7, and the left cylinder 17 and the right cylinder 18 drive the pressing block 20 to retreat. The rotating spring 194 applies force to the lower end of the rotating rod 193, so that the rotating rod 193 has a tendency to move upward, the upper end of the rotating rod 193 acts on the positioning block 196, so that the front end of the positioning block 196 abuts against the positioning seat 192 downward, and the front end of the positioning block 196 is avoided from swinging upward during positioning of the automobile door piece 21. After the punching is completed, the pressing block 20 retreats, at this time, the worker can lift the automobile door piece 21 upward, the automobile door piece 21 drives the positioning block 196 to swing upward and rotate, so that the rotating spring 194 is compressed, until the front end of the positioning block 196 is separated from the automobile door piece 21, the automobile door piece 21 is taken out, and then the rotating spring 194 pushes the rotating rod 193 to move upward, drives the positioning block 196 to rotate, and makes the positioning block 196 return to the horizontal position.

[0051] The specific embodiments described herein merely illustrate the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without departing from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A punching die for an automobile door component, comprising an upper die base (1), a punch (2), a punch pad (3), a punch fixing plate (4), a pressure plate (5), a pressure fixing plate (6), a die cavity (7), a die cavity pad (8), and a lower die base (9), characterized in that, The upper die base (1), punch pad (3), and punch fixing plate (4) are fixed in sequence by bolts. The punch (2) passes through the punch fixing plate (4). The upper end of the punch (2) abuts against the punch pad (3). The upper die base (1) is also fixed with a guide post (10). The pressure plate (5) is fixed on the pressure fixing plate (6). The pressure fixing plate (6) is located below the punch fixing plate (4) and slides with the guide post (10). The lower die base (9) is fixed with a guide sleeve (11) that slides with the guide post (10). The upper die base (1) is fixed with a limit pin (12). The lower end of the limit pin (12) passes through the pressure fixing plate (6) and is connected to a limit disc (13). The punch pad (3) and the punch fixing plate (4) have spring holes. A support spring (14) that abuts against the pressure plate (5) is provided in the spring hole. The die (7), die pad (8), and lower die base (9) are fixed together in sequence by bolts. The die (7) has two slots for two holes, in which a die insert (15) is inserted. The die insert (15) has a punching hole (16) for inserting a punch (2). The die (7) is provided with a clamping mechanism for simultaneously clamping two car door parts (21). The clamping mechanism includes a left cylinder (17), a right cylinder (18), and a center positioning component (19). The left cylinder (17), right cylinder (18), and center positioning component (19) are all fixed on the die (7). The left cylinder (17) and right cylinder (18) are located on both sides of the center positioning component (19). The front ends of the telescopic rods of the left cylinder (17) and right cylinder (18) are respectively fixed with a clamping mechanism for simultaneously clamping two car door parts (21). 1) A clamping block (20) is pressed against the side of the center positioning component (19). The center positioning component (19) includes a positioning base plate (191), a positioning seat (192), a rotating rod (193), and a rotating spring (194). The positioning seat (192) is fixed to the positioning base plate (191) by bolts. The positioning seat (192) has an installation groove (195). The two ends of the installation groove (195) are respectively rotatably connected to positioning blocks (196). The die (7) has an ejection hole. The rotating rod (193) and the rotating spring (194) are located in the ejection hole. The upper end of the rotating rod (193) abuts against the tail of the positioning block (196). The upper end of the rotating spring (194) abuts against the rotating rod (193). The lower end of the rotating spring (194) abuts against the die pad (8).

2. The punching die for an automobile door component according to claim 1, characterized in that, The front end of the positioning block (196) is tapered. The positioning block (196) can be inserted into the positioning groove (211) of the car door component (21). The two sides of the positioning block (196) are in contact with the groove wall of the positioning groove (211). The tail of the positioning block (196) has a shaft hole, and a rotating bolt is inserted in the shaft hole.

3. The punching die for an automobile door component according to claim 2, characterized in that, The upper surface of the die insert (15) is flush with the die (7), and the upper surface of the die insert (15) abuts against the bottom surface of the positioning base plate (191).

4. The punching die for an automobile door component according to claim 3, characterized in that, The front end of the clamping block (20) has two forward-protruding extrusion heads (201), the positioning base plate (191) is an isosceles trapezoid, and the positioning base plate (191) has two protruding stops (197) on both sides.

5. The punching die for an automobile door component according to claim 4, characterized in that, Two extrusion heads (201) are arranged one in front of the other. The front end of the extrusion head (201) has an extrusion surface. The extrusion surfaces of the two extrusion heads (201) are located on the same plane. Two stop heads (197) are arranged one in front of the other. The front end of the stop head (197) has an abutment surface. The abutment surfaces of the two stop heads (197) are located on the same plane. The extrusion surface of the extrusion head (201) and the abutment surface of the stop head (197) are parallel to each other.

6. The punching die for an automobile door component according to claim 1, characterized in that, The pressure plate (6) has a recessed hole, and the pressure plate (5) is inserted into the recessed hole and fixed with bolts.

7. The punching die for an automobile door component according to claim 6, characterized in that, The pressure plate (5) is fixed with a protruding extrusion head (51), the die (7) has a vertical sliding hole (71), the lower die base (9) is slidably provided with a limiting bolt (72) that passes through the die pad (8), the vertical sliding hole (71) is provided with a spring block (73), the spring block (73) is fixed to the upper end of the limiting bolt (72), the limiting bolt (72) is fitted with an upward spring (74), the lower end of the upward spring (74) abuts against the lower die base (9), the upper end of the upward spring (74) abuts against the lower end face of the spring block (73), when the extrusion head (51) moves down, it can be inserted into the vertical sliding hole (71) and push the spring block (73) down.

8. The punching die for an automobile door component according to claim 7, characterized in that, The pressure plate (5) has a pressure groove (52). After the pressure plate (5) is lowered, the bottom wall of the pressure groove (52) can abut against the upper surface of the car door part (21).

9. A punching die for an automobile door component according to claim 8, characterized in that, The die (7) has several limiting strips (75), which are located on both sides of the die insert (15).

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