Punching die for automobile metal stamping part

Abstract

The utility model relates to the technical field of punching dies, in particular to a punching die for an automobile metal stamping part, which comprises a die seat and an external connection plate, placing frames are respectively arranged on the sides, close to each other, of the die seat and the external connection plate, and a detachable stamping plate is slidably mounted on the inner side of each placing frame. A rotating groove is formed in the placing frame, a rotating ring is rotatably mounted on the inner side of the rotating groove, a limiting rod is fixedly mounted on one side of the rotating ring, and a slidable limiting plate is arranged on the outer side of the limiting rod; the design of the detachable stamping plate is adopted, when the stamping knife needs to be replaced, an extrusion ring needs to be grabbed to rotate firstly, then limiting plates are rotated to the two sides of a containing frame, the stamping plate and the stamping knife can be detached through a pushing groove, the detaching steps are reduced, the damaged stamping knife can be conveniently and independently replaced, and the replacing efficiency is improved. And the punching plate and the punching cutter can be conveniently replaced according to the shape of a punched hole.

Description

A punching die for automotive metal stamping parts Technical Field

[0001] This utility model relates to the field of punching die technology, specifically a punching die for automotive metal stamping parts. Background Technology

[0002] Punching dies for automotive metal stamping are tools used to stamp metal sheets into specific shapes and punch holes. They are widely used in automobile manufacturing to produce metal parts such as body panels, chassis, and engine components. The design and manufacture of punching dies are crucial for improving production efficiency, reducing costs, and ensuring part precision. Common punching forms include round holes, square holes, elongated holes, and oblique holes, providing necessary functional openings such as ventilation holes, drainage holes, and mounting holes. Punching dies are key tools for improving automotive production efficiency and ensuring part precision and surface quality; their design and use directly affect the cost and quality of overall vehicle production.

[0003] Chinese patent CN218946097U discloses a punching die for the production of automotive parts, including an upper die base and a lower die base. This utility model solves the problem that existing punching dies are not convenient for accurately positioning products during the punching process of automotive parts, resulting in poor punching effect.

[0004] In the aforementioned and similar prior art, when the stamping tool of the stamping die is damaged, the entire module carrying the stamping tool needs to be replaced, which greatly wastes resources and increases production costs. Furthermore, when different holes need to be stamped, the module carrying the stamping tool needs to be replaced. Usually, the bolts need to be removed with a wrench, and the entire device needs to be disassembled to replace the tool, which reduces processing efficiency.

[0005] Therefore, this utility model provides a punching die for automotive metal stamping parts that can replace damaged cutting tools individually and is easy to replace. Summary of the Invention

[0006] To address the problems of dust generation and secondary dust adhesion caused by air-blown punching dies in existing technologies, a new punching die for automotive metal stamping parts has been designed.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a punching die for automotive metal stamping parts, including a die base and an outer plate. The outer plate is located on the top of the die base. Placement frames are respectively provided on the sides of the die base and the outer plate that are close to each other. A detachable stamping plate is slidably installed on the inner side of the placement frame. A rotating groove is opened inside the placement frame. A rotating ring is rotatably installed on the inner side of the rotating groove. A limit rod is fixedly installed on one side of the rotating ring. A screw is fixedly installed on the end of the limit rod away from the rotating ring. A compression ring is threaded on the outer side of the screw. A slidable limit plate is provided on the outer side of the limit rod.

[0008] Furthermore, the outer plate is connected to the placement frame near the top by bolts and threads. A baffle is placed between the outer plate and the placement frame near the top. The baffle is fixed by pressing the outer plate against the placement frame near the top. A protruding plate is provided at the bottom of the baffle.

[0009] Furthermore, a groove is provided on one side of the placement frame, and limit blocks are fixedly installed on the inner walls of both sides of the groove.

[0010] Furthermore, limit grooves are respectively opened on both sides of the stamping plate, and a stepped hole is opened through the interior of the stamping plate near the top. A stamping knife is placed inside the stepped hole, and a stamping hole corresponding to the stamping knife is opened through the interior of the stamping plate near the bottom. A push groove is opened on the side of the two stamping plates that are close to each other.

[0011] Furthermore, a screw hole is provided inside the placement frame near the bottom, which is fixedly connected to the mold base by bolts. The rotating groove is located outside the screw hole of the placement frame near the bottom. An arc groove is provided on one side of the placement frame, which communicates with the rotating groove, and the arc groove is centered on the screw hole.

[0012] Furthermore, a stop is fixedly installed at the end of the screw away from the limiting rod.

[0013] Furthermore, the limiting plate has a limiting hole inside, and the limiting hole is located outside the limiting rod. There is a gap between the extrusion ring and the limiting rod, and a protrusion is provided on the outside of the extrusion ring.

[0014] The beneficial effects of this utility model are:

[0015] (1) The punching die for automotive metal stamping parts described in this utility model adopts a detachable stamping plate design. When the stamping knife needs to be replaced, the extrusion ring needs to be grasped and rotated to release its extrusion on the limiting plate. Then the limiting plate is rotated to both sides of the placement frame. The stamping plate and the stamping knife can be removed by pushing the groove, reducing the disassembly steps, making it convenient to replace the damaged stamping knife separately, and also making it convenient to replace the stamping plate and the stamping knife according to the shape of the stamped hole.

[0016] (2) The punching die for automotive metal stamping parts described in this utility model has a designable stamping plate. When disassembling, it is not necessary to disassemble the entire stamping die. The stamping plate and the stamping knife can be replaced separately, which prevents the entire stamping die from loosening after multiple disassembly and reassembly of the bolts and improves the service life of the stamping die. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 is a three-dimensional structural diagram of the punching die machine body of this utility model;

[0019] Figure 2 is an exploded three-dimensional structural diagram of the outer plate of this utility model;

[0020] Figure 3 is a schematic diagram of the bottom three-dimensional structure of the baffle of this utility model;

[0021] Figure 4 is an exploded three-dimensional structural diagram of the placement frame of this utility model;

[0022] Figure 5 is a cross-sectional three-dimensional structural diagram of the placement frame of this utility model;

[0023] Figure 6 is a three-dimensional structural diagram of the screw and extrusion ring of this utility model.

[0024] In the diagram: 1. Mold base; 2. Outer plate; 3. Baffle; 4. Placement frame; 5. Slide groove; 6. Limiting block; 7. Stamping plate; 8. Limiting groove; 9. Stepped hole; 10. Stamping knife; 11. Stamping hole; 12. Push groove; 13. Rotary groove; 14. Arc groove; 15. Rotating ring; 16. Limiting rod; 17. Screw; 18. Stop block; 19. Extrusion ring; 20. Limiting plate; 21. Limiting hole. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] Example: As shown in Figures 1-6, the punching die for automotive metal stamping parts of this utility model includes a die base 1 and an outer plate 2. The outer plate 2 is located at the top of the die base 1. Placement frames 4 are respectively provided on the sides of the die base 1 and the outer plate 2 that are close to each other. A detachable stamping plate 7 is slidably installed on the inner side of the placement frame 4. The outer plate 2 and the placement frame 4 near the top are connected by bolts and threads. A sliding groove 5 is opened on one side of the placement frame 4. Limiting blocks 6 are respectively fixedly installed on the inner walls of both sides of the sliding groove 5. Limiting grooves 8 are respectively opened on both sides of the stamping plate 7. A push groove 12 is opened on the side of the two stamping plates 7 that are close to each other.

[0027] Specifically, the mold base 1 can be fixed to the top of the workbench, the outer plate 2 can be connected to the external stamping rod, the mold base 1 and the outer plate 2 can be connected to the placement frame 4 by bolts, the placement frame 4 can provide opening space for the slide 5, the slide 5 can provide stable support for the limiting block 6, the slide 5 can provide sliding space for the stamping plate 7, the cooperation between the limiting block 6 and the limiting groove 8 can provide sliding support for the stamping plate 7, and at the same time prevent the stamping plate 7 from moving up, down, left and right, the stamping plate 7 can provide opening space for the push groove 12, the push groove 12 can provide pushing support for the operator, the surface of the push groove 12 has stripes to increase friction, so that the operator can push the stamping plate 7 out by using the friction of the push groove 12.

[0028] In this embodiment, a baffle 3 is placed between the outer plate 2 and the placement frame 4 near the top. The baffle 3 is fixed by the outer plate 2 and the placement frame 4 near the top. A protruding plate is provided at the bottom of the baffle 3. A stepped hole 9 is opened through the interior of the stamping plate 7 near the top. A stamping knife 10 is placed inside the stepped hole 9. A stamping hole 11 corresponding to the stamping knife 10 is opened through the interior of the stamping plate 7 near the bottom.

[0029] Specifically, the outer plate 2 and the top placement frame 4 can provide stable support for the baffle 3, the top stamping plate 7 can provide through opening space for the stepped hole 9, the stepped hole 9 can provide through placement space for the stamping knife 10, and at the same time, the stepped hole 9 can provide support for the stamping knife 10 to prevent the stamping knife 10 from falling downwards. The convex plate at the bottom of the baffle 3 can provide support for the stamping knife 10, so that the stamping knife 10 will not move up and down relative to the stamping plate 7 during the stamping process.

[0030] In this embodiment, a rotating groove 13 is provided inside the placement frame 4. A rotating ring 15 is rotatably installed on the inner side of the rotating groove 13. A limiting rod 16 is fixedly installed on one side of the rotating ring 15. A screw 17 is fixedly installed on the end of the limiting rod 16 away from the rotating ring 15. A compression ring 19 is threadedly installed on the outer side of the screw 17. A slidable limiting plate 20 is provided on the outer side of the limiting rod 16. A screw hole is provided inside the placement frame 4 near the bottom, and it is fixedly connected to the mold base 1 by bolts. The rotating groove 13 is located outside the screw hole of the placement frame 4 near the bottom. An arc groove 14 is provided on one side of the placement frame 4. The arc groove 14 communicates with the rotating groove 13, and the arc groove 14 is centered on the screw hole. A stop block 18 is fixedly installed on the end of the screw 17 away from the limiting rod 16. A limiting hole 21 is provided inside the limiting plate 20, and the limiting hole 21 is located outside the limiting rod 16. There is a gap between the compression ring 19 and the limiting rod 16. A protrusion is provided on the outer side of the compression ring 19.

[0031] Specifically, the placement frame 4 provides space for the rotating groove 13, the rotating groove 13 provides space for the rotating ring 15 to rotate, the rotating ring 15 provides stable support for the limiting rod 16, the limiting rod 16 provides stable support for the screw 17, the screw 17 provides threading for the extrusion ring 19, and the limiting plate 20 provides through space for the limiting hole 21. Both the rotating ring 15 and the arc groove 14 are centered on the screw hole, so that when the limiting plate 20 rotates around the screw hole, the limiting plate 20 can rotate along the inner side of the arc groove 14. The limiting rod 16 and the limiting hole 21 cooperate to provide a limiting function for the limiting plate 20, preventing the limiting plate 20 from rotating around the limiting rod 16, thereby ensuring that the limiting plate 20 can smoothly rotate through the arc groove 14 to both sides of the placement frame 4.

[0032] Working principle: When the stamping knife 10 is damaged and needs to be replaced, the operator grasps the two extrusion rings 19 near the top and rotates them. The extrusion rings 19 move away from the placement frame 4 by using the thread action with the screw 17, so that the extrusion rings 19 no longer extrude the limiting plate 20. Then, the operator grasps the two limiting plates 20 and rotates them away from each other. The limiting plates 20 drive the limiting rod 16 and the rotating ring 15 to rotate around the screw hole. The limiting plates 20 slide along the inner side of the arc groove 14 and rotate the two limiting plates 20 to the two sides of the placement frame 4 respectively. The stamping plate 7 and the stamping knife 10 at the top are removed through the push groove 12 to facilitate the replacement of the damaged stamping knife 10. If it is necessary to stamp metal parts of different shapes, the above operation is repeated to replace the two stamping plates 7 and the stamping knife 10, thereby improving the replacement speed.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A piercing die for a metal stamping of an automobile, comprising a die shoe (1) and an outer tie plate (2) located on top of the die shoe (1), characterized in that: The mold base (1) and the outer plate (2) are respectively provided with a placement frame (4) on the side close to each other. A detachable stamping plate (7) is slidably installed on the inner side of the placement frame (4). A rotating groove (13) is opened inside the placement frame (4). A rotating ring (15) is rotatably installed on the inner side of the rotating groove (13). A limit rod (16) is fixedly installed on one side of the rotating ring (15). A screw (17) is fixedly installed on the end of the limit rod (16) away from the rotating ring (15). A compression ring (19) is threaded on the outer side of the screw (17). A slidable limit plate (20) is provided on the outer side of the limit rod (16).

2. A piercing die for a metal stamping of an automobile as defined in claim 1, wherein: The outer plate (2) is connected to the placement frame (4) near the top by bolt threads. A baffle (3) is placed between the outer plate (2) and the placement frame (4) near the top. The baffle (3) is pressed and fixed by the outer plate (2) and the placement frame (4) near the top. A protruding plate is provided at the bottom of the baffle (3).

3. The punching die for automotive metal stamping parts according to claim 2, characterized in that: A groove (5) is provided on one side of the placement frame (4), and limit blocks (6) are fixedly installed on the inner walls of both sides of the groove (5).

4. The punching die for automotive metal stamping parts according to claim 1, characterized in that: Limiting grooves (8) are respectively opened on both sides of the stamping plate (7). A stepped hole (9) is opened through the interior of the stamping plate (7) near the top. A stamping knife (10) is placed inside the stepped hole (9). A stamping hole (11) corresponding to the stamping knife (10) is opened through the interior of the stamping plate (7) near the bottom. A push groove (12) is opened on the side of the two stamping plates (7) that are close to each other.

5. A punching die for automotive metal stamping parts according to claim 3, characterized in that: The placement frame (4) near the bottom has a screw hole inside, which is fixedly connected to the mold base (1) by bolts. The rotating groove (13) is located outside the screw hole of the placement frame (4) near the bottom. An arc groove (14) is provided on one side of the placement frame (4). The arc groove (14) is connected to the rotating groove (13), and the arc groove (14) is centered on the screw hole.

6. The punching die for automotive metal stamping parts according to claim 1, characterized in that: A stop (18) is fixedly installed at the end of the screw (17) away from the limiting rod (16).

7. A piercing die for a metal stamping of an automobile according to claim 6, characterized in that: The limiting plate (20) has a limiting hole (21) inside, and the limiting hole (21) is located outside the limiting rod (16). There is a gap between the extrusion ring (19) and the limiting rod (16), and a protrusion is provided on the outside of the extrusion ring (19).

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