An automobile part stamping forming device

Abstract

The application discloses a stamping forming device for automobile parts and relates to the field of automobile sheet metal parts. The stamping forming device comprises a machining table for bearing sheet metal parts and a rack provided with stamping cutters. The stamping cutters vertically punch down to realize punching forming on the sheet metal parts. The stamping forming device further comprises a deburring mechanism. The deburring mechanism comprises an annular groove opened in the inside of the machining table. The annular groove is located below the stamping cutters. Two arc-shaped polishing pieces are oppositely arranged in the inside of the annular groove. After the punching forming is completed, the two arc-shaped polishing pieces move in the annular groove to remove burrs of the sheet metal parts. Through the two arc-shaped polishing pieces, after the punching forming is completed, the two arc-shaped polishing pieces swing and slide at the bottom of the punching hole, so that the polishing surface on the arc-shaped polishing piece slides and contacts the burrs at the edge of the punching hole, thereby realizing polishing of the burrs at the edge of the punching hole.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile sheet metal part processing, and particularly relates to an automobile part stamping forming device. BACKGROUND

[0002] The automobile part mentioned in the application is specifically an automobile sheet metal part, and it is known that the automobile sheet metal part is a shell of various subassemblies. Punching of the automobile sheet metal part is a forming processing method for obtaining a workpiece with a required shape and size by applying external force to a plate, a strip, a pipe and a profile by a press and a die so that plastic deformation or separation is generated.

[0003] A patent document with the name "Automobile sheet metal part metal stamping device" and the authorization announcement number CN118768470B and the announcement date of 2024-11-12, which comprises a device body and a stamping die mounted in the device body, cooperates the punch, the punch detection sleeve, the punch guide sleeve, the detection gas pack and the punch self-checking system, can automatically detect and sense the punching quality, can assist in judging the state of the punch to facilitate timely maintenance of the punch, promote the precision of the device body to punch the automobile sheet metal part, also avoid damage to the stamping die and the automobile sheet metal part caused by abnormal punching, on the other hand, can also process the position of the extruded protrusion on the edge of the punching hole or the adhesion and residue of the blanking when abnormal punching occurs, effectively avoid damage to the automobile sheet metal part and the upper die core end face in the subsequent compression process, further ensure the stamping quality of the automobile sheet metal part, and effectively realize the automation and intelligent development of the device body, promote the stamping quality and economic benefit.

[0004] In the prior art, when the sheet metal part of the automobile is punched, burrs are easily generated at the edge of the opening of the punched hole punched out by the punching. SUMMARY

[0005] The purpose of the application is to provide an automobile part stamping forming device to solve the above-mentioned problems in the prior art.

[0006] In order to achieve the above-mentioned purpose, the application provides the following technical scheme:

[0007] An automobile part stamping forming device comprises a processing table for bearing a sheet metal part and a rack provided with a stamping tool, the stamping tool vertically punches downward to realize punching forming of the sheet metal part, and further comprises a deburring mechanism, the deburring mechanism comprises an annular groove opened in the inside of the processing table, the annular groove is located below the stamping tool, two arc-shaped polishing pieces are oppositely arranged in the inside of the annular groove, and after the punching forming is completed, the two arc-shaped polishing pieces move in the annular groove to remove burrs of the sheet metal part.

[0008] The stamping cutter is driven by a reciprocating driving unit, the reciprocating driving unit comprises an electric cylinder, the electric cylinder is arranged on the top of the rack, and the telescopic end of the electric cylinder penetrates through the rack and extends to the inside of the rack, so that the telescopic end of the electric cylinder is fixedly connected with the stamping cutter.

[0009] The annular groove is specifically divided into an upper groove body and a lower groove body, the two groove bodies are vertically arranged in a stacked manner, and are in communication and on the same central axis.

[0010] The upper groove body is rotatably connected with a ring gear, two arc-shaped grooves are oppositely arranged on the ring gear, a sliding rod is slidably connected in each arc-shaped groove, an arc-shaped polishing piece is fixedly connected to the end of the sliding rod, and a polishing surface is arranged on the arc-shaped polishing piece, the polishing surface is used for polishing the burrs at the bottom of the punched hole formed by stamping, a tension spring is arranged on one side of the sliding rod, and one end of the tension spring is fixedly connected to the vertical side wall of the arc-shaped groove.

[0011] The arc-shaped polishing piece is slidably connected to the ring gear through the sliding rod, and one end of the arc-shaped polishing piece is in contact with the inner edge of the ring gear.

[0012] The stamping cutter comprises a stamping rod and a tool bit at the bottom end of the stamping rod, an L-shaped push rod is fixedly connected to the outer surface of the stamping rod, and a first inclined surface is arranged at the end of the L-shaped push rod.

[0013] The inside of the machining table is provided with a T-shaped groove, the T-shaped groove is composed of a vertical groove and a horizontal groove, and the vertical groove is used for inserting the end of the L-shaped push rod.

[0014] The opening of the horizontal groove away from the vertical groove is in communication with the annular groove.

[0015] The inside of the horizontal groove is slidably connected with a straight rack, a second inclined surface matched with the first inclined surface is arranged at the end of the straight rack, so that when the L-shaped push rod is inserted into the vertical groove, the first inclined surface and the second inclined surface are in sliding abutment, so as to push the straight rack to slide in the horizontal groove.

[0016] The straight rack is in meshing connection with the ring gear, and a return spring is arranged at the other end of the straight rack, and one end of the return spring is fixedly connected to the vertical side wall of the horizontal groove.

[0017] In the above technical solution, the present invention provides an automotive parts stamping forming device, which, after the punching forming is completed, uses two arc-shaped grinding parts to swing and slide at the bottom of the punch, so that the grinding surface on the arc-shaped grinding parts slides to contact the burrs at the edge of the punch, thereby achieving the grinding of the burrs at the edge of the punch. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the structure of an automotive parts stamping forming apparatus provided in an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A magnified schematic diagram of the local structure at point A;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure of the central ring gear from another perspective;

[0022] Figure 4 for Figure 3 Schematic diagram of the structure of the arc-shaped groove;

[0023] Figure 5 for Figure 4 A magnified view of the structure at point B in the middle;

[0024] Figure 6 for Figure 1 A cross-sectional view of the intermediate machining table.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Machining table; 2. Stamping tool; 21. Stamping rod; 22. Cutting head; 3. Frame; 4. Electric cylinder; 5. Arc-shaped grinding part; 6. Annular groove; 61. Upper groove; 62. Lower groove; 7. Ring gear; 8. Arc groove; 81. Sliding groove; 82. Strip groove; 9. Sliding rod; 10. Grinding surface; 11. First inclined surface; 12. T-groove; 121. Vertical groove; 122. Horizontal groove; 13. L-shaped push rod; 14. Straight rack; 15. Second inclined surface; 16. Return spring; 17. Tension spring; 18. First vertical surface; 19. Second vertical surface; 20. Third vertical surface. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] like Figures 1-6 As shown, this embodiment provides an automotive parts stamping forming apparatus, including a processing table 1 for supporting sheet metal parts and a frame 3 equipped with a stamping cutter 2. The stamping cutter 2 punches vertically downwards to achieve punching and forming of the sheet metal parts. It also includes a deburring mechanism, which includes an annular groove 6 formed inside the processing table 1. The annular groove 6 is located below the stamping cutter 2. Two arc-shaped grinding parts 5 are arranged opposite each other inside the annular groove 6. After the punching and forming is completed, the two arc-shaped grinding parts 5 move in the annular groove 6 to remove burrs from the sheet metal parts.

[0029] Specifically, the processing table 1 is horizontally arranged inside the frame 3. It is used to support the sheet metal parts to be processed and allows the sheet metal parts to be placed horizontally for easy stamping operations. The sheet metal parts are generally thin metal sheets. In this embodiment, the automotive sheet metal parts can be various sheet metal parts on the car body with different shapes. Since this embodiment focuses on solving the problem of punching burrs, the difference in the shape of the sheet metal parts is irrelevant to the solution of the technical problem in this embodiment. For ease of viewing and understanding, the accompanying drawings and text descriptions simplify it to a rectangle, but obviously other shapes are also possible. The processing table 1 is fixed to the inner side of the frame 3; the frame 3 is equipped with a stamping cutter 2, which is arranged vertically. During stamping, the stamping cutter 2 punches vertically downwards to form a hole in the sheet metal part. The stamping cutter 2 is preferably driven by a reciprocating drive unit, which includes an electric cylinder 4. The electric cylinder 4 is used to push the stamping cutter 2 to move, thus completing the stamping operation on the sheet metal part to form a through hole, such as a circular hole. It should be noted that the electric cylinder 4 is located on the top of the frame 3. The telescopic end of the electric cylinder 4 passes through the frame 3 and extends into the interior of the frame 3. The telescopic end of the electric cylinder 4 extending into the interior of the frame 3 is fixedly connected to the stamping tool 2. Thus, when the electric cylinder 4 is started, it drives the stamping tool 2 to punch vertically downward to punch holes in the surface of the sheet metal part, thereby completing the stamping operation. The frame 3 is provided with a clamping and positioning mechanism (not shown in the figure), which is used to clamp and fix the sheet metal part to be processed on the processing table 1 to prevent displacement of the sheet metal part during the punching process, thereby affecting the normal punching process. All of the above are existing technologies and will not be described in detail.

[0030] The core innovation of this invention is that it also includes a deburring mechanism, which includes an annular groove 6 inside the processing table 1. The annular groove 6 is located below the stamping tool 2. Two arc-shaped grinding parts 5 are arranged opposite each other inside the annular groove 6. After the punching is completed, the two arc-shaped grinding parts 5 move in the annular groove 6 to remove the burrs from the sheet metal parts.

[0031] Specifically, the annular groove 6 is vertically formed inside the processing table 1, and is located directly below the stamping tool 2, meaning that their central axes are on the same vertical line. The annular groove 6 is specifically divided into a stepped upper groove 61 and a lower groove 62, which are arranged vertically adjacent to each other. It should be noted that the opening of the upper groove 61 is larger than the opening of the lower groove 62, and the inner diameter of the lower groove 62 is slightly larger than the outer diameter of the stamping tool 2. A ring gear 7 is rotatably connected inside the upper groove 61 (the ring gear 7 is connected via...). The annular protrusion on the bottom end face is rotatably connected to the annular rotating groove on the bottom wall of the upper section groove 61. The inner diameter of the annular gear 7 is slightly larger than the outer diameter of the stamping tool 2. Thus, when stamping the sheet metal part on the processing table 1, the electric cylinder 4 is activated to drive the stamping tool 2 to move vertically downward to punch a hole in the sheet metal part. The stamping tool 2 is then pressed to insert into the annular groove 6, that is, the stamping tool 2 passes through the interior of the annular gear 7 and enters the lower section groove 62, thereby completing the punching operation. At the same time, the waste generated by punching is eliminated. Material is discharged from the bottom of the annular groove 6; a ring gear 7 is rotatably connected inside the upper section of the groove 61, and two arc-shaped grooves 8 are opened opposite each other on the upper end surface of the ring gear 7. A sliding rod 9 is slidably connected inside each of the arc-shaped grooves 8. The arc-shaped grinding part 5 is fixed to the end of the sliding rod 9, and the top surface of the arc-shaped grinding part 5 is the grinding surface 10. The grinding surface 10 is used to grind the burrs at the bottom of the punch formed by stamping. The top surface of the arc-shaped grinding part 5, i.e., the grinding surface 10, is at the same level as the top of the processing table 1. On a flat surface, this allows the sheet metal part to be processed to be placed on the processing table 1 in a horizontal position to facilitate the stamping operation, and also provides support for the stamping position of the sheet metal part; at the same time, when the clamping and positioning mechanism clamps the sheet metal part, that is, the top surface of the arc-shaped grinding part 5 is in contact with the bottom surface of the sheet metal part, so that during the rotation of the ring gear 7, it will not drive the arc-shaped grinding part 5 to rotate synchronously, but will only allow the arc-shaped grinding part 5 to slide along the arc-shaped groove 8, so as to achieve rotation limit of the arc-shaped grinding part 5;

[0032] The arc-shaped grinding part 5 is slidably connected to the annular gear 7 via a sliding rod 9. The outer surface of the sliding rod 9 has two first vertical surfaces 18 and one second vertical surface 19, with the two first vertical surfaces 18 arranged opposite each other. The arc-shaped groove 8 includes a sliding groove 81 and a strip groove 82. One opening of the sliding groove 81 communicates with the strip groove 82, and the other opening connects to the vertical sidewall of the annular gear 7. The opening of the strip groove 82 faces exactly the same direction as the second vertical surface 19. The inner wall of the sliding groove 81... A third vertical surface 20 is provided, which is adapted to the first vertical surface 18. Thus, when the third vertical surface 20 abuts against the first vertical surface 18 on the sliding rod 9, the sliding rod 9 cannot rotate because the first vertical surface 18 on the sliding rod 9 abuts against the third vertical surface 20, thereby limiting the sliding rod 9 and preventing it from rotating. A tension spring 17 is provided on the second vertical surface 19, and one end of the tension spring 17 is fixed to one side inside the strip groove.

[0033] It should be noted that when the arc-shaped grinding part 5 is in the initial state, one end of the arc-shaped grinding part 5 is close to the central axis of the ring gear 7, and the other end is far away from the central axis of the ring gear 7. That is, the arc-shaped grinding part 5 is in an inclined state on the ring gear 7. Thus, when the stamping cutter 2 is inserted downward into the ring gear 7, the end of the arc-shaped grinding part 5 close to the central axis of the ring gear 7 abuts against the outer surface of the stamping cutter 2.

[0034] In the above description, by limiting the sliding rod 9, one end of the arc-shaped grinding part 5 is close to the central axis of the ring gear 7, and the other end is far away from the central axis of the ring gear 7. That is, the arc-shaped grinding part 5 is in an inclined state on the ring gear 7.

[0035] Specifically, when the ring gear 7 rotates, it drives the sliding rod 9 to slide in the sliding groove 81, so that the end of the arc-shaped grinding part 5 away from the central axis gradually comes into contact with the outer surface of the stamping tool 2. Thus, the overall movement trajectory of the arc-shaped grinding part 5 is oscillating, so when grinding the burrs at the bottom of the punch formed by stamping, the corresponding oscillating grinding is also used to improve the effect of burr grinding.

[0036] The stamping tool 2 includes a stamping rod 21 and a cutter head 22 located at the bottom end of the stamping rod 21. A grinding protrusion is provided on the outer surface of the stamping rod 21, and the grinding protrusion is used to grind the inner wall of the punch hole.

[0037] An L-shaped push rod 13 is fixed to the outer surface of the stamping rod 21. The end of the L-shaped push rod 13 has a first inclined surface 11 facing the processing table 1. A T-shaped groove 12 is formed inside the processing table 1. The T-shaped groove 12 includes a vertical groove 121 and a horizontal groove 122. The vertical groove 121 is used for inserting the end of the L-shaped push rod 13. Thus, when the stamping tool 2 presses downwards, it drives the first inclined surface 11 of the end of the L-shaped push rod 13 to insert into the vertical groove 121. An opening of the horizontal groove 122 away from the vertical groove 121 is connected to the upper part of the annular groove 6. The segmental groove 61 is connected; and a rack 14 is slidably connected inside the horizontal groove 122. The end of the rack 14 is provided with a second inclined surface 15 that matches the first inclined surface 11. Thus, when the L-shaped push rod 13 is inserted into the vertical groove 121, the first inclined surface 11 and the second inclined surface 15 slide against each other, thereby pushing the rack 14 to slide in the horizontal groove 122. The rack 14 meshes with the ring gear 7, and a return spring 16 is provided at the other end of the rack 14. One end of the return spring 16 is fixed to the vertical side wall of the horizontal groove 122.

[0038] Specifically, the L-shaped push rod 13 moves in the same direction as the stamping cutter 2, and both move vertically, but not horizontally. Thus, when the stamping cutter 2 is inserted into the annular groove 6, the L-shaped push rod 13 is just inserted into the vertical groove 121 of the T-shaped groove 12. This causes the first inclined surface 11 of the L-shaped push rod 13 to slide against the second inclined surface 15 of the rack 14, driving the rack 14 to slide horizontally and mesh with the ring gear 7. This causes the ring gear 7 to rotate passively. Because the arc-shaped grinding part 5 is in contact with the sheet metal part, the synchronous rotation of the arc-shaped grinding part 5 and the ring gear 7 is restricted, causing the arc-shaped grinding part 5 to rotate passively. The grinding part 5 slides within the arc-shaped groove 8 via the sliding rod 9, that is, the first vertical surface 18 on the sliding rod 9 separates from the third vertical surface 20 of the sliding groove 81. At this time, the tension spring 17 is stretched. Simultaneously, after the sliding rod 9 loses its limit, it rotates within the sliding groove 81, causing the end of the arc-shaped grinding part 5 away from the central axis of the ring gear 7 to gradually approach and abut against the stamping rod 21 of the stamping tool 2. That is, the arc-shaped grinding part 5 swings while approaching and abutting against the side wall of the stamping rod 21 of the stamping tool 2. At this time, through the sliding of the two arc-shaped grinding parts 5, the grinding surface 10 swings and grinds the burrs at the bottom of the punch formed by stamping, so as to remove the burrs generated by the punch. At the same time, when the two arc-shaped grinding parts 5 contact the side wall of the stamping tool 2, that is, the sliding position of the two arc-shaped grinding parts 5 is limited, so that it just completes the displacement to grind the burrs generated by the punching hole, that is, the vertical side wall of the arc-shaped grinding part 5 coincides with the inner edge of the ring gear 7.

[0039] In the above description, after the stamping cutter 2 is stamped, it is first inserted into the annular groove 6, and then the L-shaped push rod 13 is inserted into the T-shaped groove 12, which pushes the straight rack 14 to drive the ring gear 7 so that the two arc-shaped grinding parts 5 swing until they abut against the stamping rod 21 of the stamping cutter 2 inserted into the annular groove 6. In this way, during the sliding contact process of the arc-shaped grinding parts 5, there are two functions. The first function is to allow the grinding surface 10 to swing and grind the burrs generated by the punching hole; the second function is to limit the arc-shaped grinding parts 5 as they slide through the stamping rod 21 of the stamping cutter 2.

[0040] In this embodiment, the arc-shaped grinding component 5 has two states:

[0041] When the arc-shaped grinding part 5 is in the first state, that is, one end of the arc-shaped grinding part 5 is close to the central axis of the ring gear 7 and the other end is far away from the central axis of the ring gear 7;

[0042] When the arc-shaped grinding part 5 is in the second state, that is, when both ends of the arc-shaped grinding part 5 abut against the surface of the stamping rod 21;

[0043] Specifically, when switching from the first state to the second state, the electric cylinder 4 is activated to drive the stamping tool 2 to punch the sheet metal part supported on the processing table 1. After the punching is completed, the stamping tool 2 and the stamping rod 21 are inserted into the annular groove 6. At this time, the L-shaped push rod 13 is inserted into the vertical groove 121 in the T-shaped groove 12, and slides against the first inclined surface 11 and the second inclined surface 15 on the rack 14, causing the rack 14 to slide and press the return spring 16. Since the rack 14 and the ring gear 7 are in a meshing state, the ring gear 7 is driven to rotate, causing the sliding rod 9 to slide in the arc groove 8, causing the arc-shaped grinding part 5 to swing and slide, that is, to slide and contact the burrs generated by the punching. The burrs generated are ground by the grinding surface 10.

[0044] In the above description, the switching action from the first state to the second state is performed by the electric cylinder 4. Specifically, during grinding, by starting the electric cylinder 4, the stamping tool 2 is driven to punch holes in the sheet metal part supported on the processing table 1. The stamping tool 2 is first inserted into the interior of the annular groove 6, and then the L-shaped push rod 13 is driven to be inserted into the vertical groove 121 in the T-shaped groove 12. The first inclined surface 11 and the second inclined surface 15 on the rack 14 slide against each other, causing the rack 14 to slide. Since the rack 14 and the ring gear 7 are in a meshing state, the ring gear 7 is driven to rotate, which drives the sliding rod 9 to slide in the arc groove 8. The end of the arc-shaped grinding part 5 away from the ring gear 7 gradually approaches and abuts against the stamping rod 21 on the stamping tool 2. That is, the arc-shaped grinding part 5 slides and swings at the same time, that is, it slides and contacts the burrs generated by the punching. The burrs generated are ground by the grinding surface 10.

[0045] After grinding is completed, the electric cylinder 4 is activated again, driving the stamping cutter 2 to move upward. That is, the grinding protrusion on the stamping rod 21 slides and rubs against the punch hole to grind the vertical side wall of the punch hole. When the stamping cutter 2 moves upward, the first inclined surface 11 of the L-shaped push rod 13 loses contact with the second inclined surface 15 on the rack 14. At the same time, the sheet metal part with the punched hole is removed from the processing table 1. First, the return spring 16 causes the rack 14 to mesh and rotate with the ring gear 7 again. At the same time, the return spring 17 causes the sliding rod 9 to slide in the opposite direction inside the arc groove 8, so that the two arc-shaped grinding parts 5 slide away from each other, that is, gradually lose contact with the stamping cutter 2, until they slide to the initial position (one end of the arc-shaped grinding part 5 is close to the central axis of the ring gear 7, and the other end is away from the central axis of the ring gear 7).

[0046] The beneficial effects of this embodiment are as follows: After the punching process is completed, the two arc-shaped grinding parts 5 are swung and slid at the bottom of the punch, so that the grinding surface 10 on the arc-shaped grinding parts 5 slides and contacts the burrs at the edge of the punch, thereby achieving the grinding of the burrs at the edge of the punch.

[0047] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A stamping forming apparatus for automotive parts, comprising a processing table for supporting sheet metal parts and a frame equipped with stamping tools, wherein the stamping tools punch vertically downwards to achieve punching and forming of the sheet metal parts, characterized in that: It also includes a deburring mechanism, which includes an annular groove inside the processing table, the annular groove being located below the stamping tool, and two arc-shaped grinding parts being arranged opposite each other inside the annular groove. After the punching is completed, the two arc-shaped grinding parts move in the annular groove to remove the burrs from the sheet metal parts. The annular groove is specifically divided into an upper groove and a lower groove. The two grooves are arranged vertically and are connected to each other on the same central axis. A ring gear is rotatably connected inside the upper section of the groove. Two arc-shaped grooves are formed opposite to each other on the ring gear. A sliding rod is slidably connected inside each arc-shaped groove. The arc-shaped grinding part is fixed to the end of the sliding rod, and the top surface of the arc-shaped grinding part is the grinding surface. The grinding surface is used to grind the burrs at the bottom of the punch formed by stamping. A tension spring is provided on one side of the sliding rod. One end of the tension spring is fixed to the vertical side wall of the arc-shaped groove. The top surface of the arc-shaped grinding part is in contact with the bottom surface of the sheet metal part. The arc-shaped grinding component is slidably connected to the ring gear via a sliding rod, and one end of the arc-shaped grinding component contacts the inner edge of the ring gear.

2. The stamping and forming apparatus for automotive parts according to claim 1, characterized in that, The stamping cutter is driven by a reciprocating drive unit, which includes an electric cylinder. The electric cylinder is located on the top of the frame, and its telescopic end passes through the frame and extends into the interior of the frame. Thus, the telescopic end of the electric cylinder is fixedly connected to the stamping cutter.

3. The stamping and forming apparatus for automotive parts according to claim 1, characterized in that, The stamping tool includes a stamping rod and a cutter head located at the bottom end of the stamping rod. An L-shaped push rod is fixed to the outer surface of the stamping rod, and a first inclined surface is provided at the end of the L-shaped push rod.

4. The stamping and forming apparatus for automotive parts according to claim 3, characterized in that, The processing table has a T-shaped groove inside, which consists of a vertical groove and a horizontal groove, wherein the vertical groove is used for the insertion of the end of the L-shaped push rod.

5. The stamping and forming apparatus for automotive parts according to claim 4, characterized in that, An opening in the horizontal groove that is away from the vertical groove is connected to the annular groove.

6. The stamping and forming apparatus for automotive parts according to claim 5, characterized in that, A rack is slidably connected inside the horizontal groove. The end of the rack has a second inclined surface that matches the first inclined surface. When the L-shaped push rod is inserted into the vertical groove, the first and second inclined surfaces slide against each other, thereby pushing the rack to slide within the horizontal groove.

7. The stamping and forming apparatus for automotive parts according to claim 6, characterized in that, The spur rack meshes with the annular gear, and a return spring is provided at the other end of the spur rack. One end of the return spring is fixed to the vertical side wall of the horizontal groove.

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