Breakage-proof special-shaped punch die

Abstract

The utility model relates to the technical field of stamping dies, in particular to an anti-breaking special-shaped punch die which comprises a punch clamping plate, a punch fixing plate and a pressure plate, a punch fixing assembly is arranged in the punch fixing plate and the pressure plate, a special-shaped punch is fixedly arranged in the punch fixing assembly, and the punch fixing assembly is arranged in the middle of the punch fixing plate and the pressure plate. The punch fixing assembly comprises a first clamping plate insert, a second clamping plate insert and a third clamping plate insert, a movable groove is formed in the third clamping plate insert, the first clamping plate insert and the second clamping plate insert are movably arranged in the movable groove, and the second clamping plate insert is arranged on the top of the first clamping plate insert. According to the special-shaped punch, the punch is effectively protected against the influence of punching lateral force, and the problem that a special-shaped punch in an existing structure is frequently broken is solved.

Description

Technical Field

[0001] This application relates to the field of stamping die technology, and in particular to a non-breakable irregular punch die. Background Technology

[0002] In the field of mechanical manufacturing, especially in precision stamping processes, the design and manufacturing quality of molds directly affect product accuracy and production efficiency. With the continuous advancement of industrial automation, stamping equipment is widely used in various industries such as automotive parts and electronic products, greatly improving the overall level of manufacturing. However, in this process, the breakage of small punches has become one of the bottlenecks restricting production, not only increasing maintenance costs but also reducing the stability of the production line.

[0003] To address the problem of small punches being prone to breakage, existing technologies have proposed a variety of solutions. Commonly used measures include: (1) using high-strength materials to make the punches, such as special alloy steel or high-performance stainless steel; (2) optimizing the heat treatment process, improving the hardness and toughness of the punches by precisely controlling the quenching and tempering parameters; (3) designing an efficient cooling system to ensure the temperature stability of the punches under high-load working conditions; in addition, some companies will also regularly maintain and repair the punches to promptly identify and replace severely worn parts.

[0004] While the methods described above improve the durability and reliability of punches to some extent, they still cannot completely solve the problem of frequent breakage of small punches, especially those with small dimensions. This is because in traditional mold designs, irregularly shaped punches are usually offset at one end of the punch clamp, punch holder, and pressure plate, and longer punches are used. This makes them susceptible to large lateral forces during the punching process, causing the punch to bear excessive shear stress and ultimately leading to breakage. Utility Model Content

[0005] To overcome the above-mentioned technical problems, this application provides a non-breakable irregular punch mold.

[0006] This application provides a non-breakage irregular-shaped punch mold, which adopts the following technical solution:

[0007] A non-breakable irregular punch mold includes a punch clamping plate, a punch fixing plate and a pressure plate. A punch fixing assembly is provided in the punch fixing plate and the pressure plate. An irregular punch is fixedly installed in the punch fixing assembly. The punch fixing assembly is located in the middle of the punch fixing plate and the pressure plate.

[0008] By adopting the above technical solution, the problem of breakage caused by strength issues in small punches in existing technologies can be effectively solved. By placing the irregularly shaped punch in the middle of the punch fixing plate and the pressure plate, the stability of the punch during the punching process is ensured, the influence of lateral forces is reduced, thereby improving the service life of the punch and reducing maintenance costs.

[0009] Preferably, the irregular punch includes a convex pin plate, which is formed along the length of the irregular punch, and the convex pin plate is configured as an irregular plate-shaped protrusion.

[0010] By adopting the above technical solution, the irregular punch includes a convex pin plate, which is opened along the length direction of the irregular punch and set as an irregular plate-shaped protrusion. This design can increase the stability of the irregular punch during operation, effectively reduce the risk of breakage caused by lateral forces, thereby extending the service life of the punch and reducing maintenance costs.

[0011] Preferably, a protrusion is provided on the upper part of the irregular punch to form a limiting protrusion, and the protruding pin plate and the limiting protrusion are not coplanar.

[0012] By adopting the above technical solution, a limiting protrusion formed by a protrusion is provided on the upper part of the irregular punch, so that the protruding pin plate and the limiting protrusion are not coplanar, thereby effectively preventing the influence of the lateral force generated during the punching process on the punch, enhancing the stability of the punch, and reducing the risk of punch breakage.

[0013] Preferably, the height of the irregular punch is set to 30mm.

[0014] By adopting the above technical solution, the height of the irregular punch is set to 30mm, which significantly reduces the overall height of the punch, reduces the impact of lateral forces during the punching process, and effectively prevents the breakage of small punches due to insufficient strength. This not only extends the service life of the punch but also reduces the need for frequent punch replacement or grinding, thereby improving production efficiency and product quality.

[0015] Preferably, the punch fixing assembly includes a first clamping plate insert, a second clamping plate insert, and a third clamping plate insert. The third clamping plate insert has a movable groove. The first clamping plate insert and the second clamping plate insert are movably disposed in the movable groove. The second clamping plate insert is disposed on top of the first clamping plate insert.

[0016] By adopting the above technical solution, the stability and service life of the shaped punch can be effectively improved. The first and second clamping plates are movably disposed in the movable groove within the third clamping plate, giving the entire punch fixing assembly better flexibility and adaptability. This allows for better dispersion and absorption of lateral forces during the punching process, thereby reducing the risk of punch breakage. The second clamping plate is located on top of the first clamping plate, further enhancing the overall structural stability of the punch fixing assembly and ensuring that the punch is less prone to displacement or damage during high-speed stamping. These improvements work together to significantly improve the reliability and durability of the shaped punch mold, reducing maintenance costs and downtime. Preferably, the third clamping plate also has a first and second engaging groove communicating with the movable groove. The second and first clamping plates are respectively provided with shoulders on one side, forming a second shoulder and a first shoulder. The second shoulder engages with the second engaging groove, and the first shoulder engages with the first engaging groove.

[0017] By adopting the above technical solution, the first and second engaging grooves within the third clamping plate insert engage with the first and second protrusions on the first and second clamping plate inserts, allowing the first and second clamping plate inserts to be stably installed within the movable slots. This not only improves the positioning accuracy of the clamping plate inserts but also enhances the stability of the entire punch fixing assembly, effectively preventing the irregularly shaped punch from being affected by lateral forces during the punching process and reducing the risk of punch breakage. Preferably, the second clamping plate insert has a through groove forming a second punch groove, and the second clamping plate insert also has a protrusion engaging groove communicating with the second punch groove.

[0018] By adopting the above technical solution, a through groove is formed inside the second clamping plate to create a second punch groove. This design ensures precise positioning of the punch during processing and improves the product qualification rate. Simultaneously, a protrusion groove connected to the second punch groove is also provided inside the second clamping plate, further enhancing the stability of the punch during operation and effectively preventing displacement or damage caused by uneven force on the punch, thereby extending the service life of the mold and reducing maintenance costs.

[0019] Preferably, the first clamping plate has a through groove inside to form a first punch groove.

[0020] By adopting the above technical solution, a through groove is opened in the first clamping plate to form the first punch groove, which can effectively reduce the stress area of ​​the irregular punch during the punching process, thereby further improving the service life and stability of the irregular punch. In addition, this design can also ensure that the punch is punched more smoothly and reduce the risk of breakage caused by lateral forces.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. By setting the height of the irregular punch to 30mm, the lateral force of the punch during the punching process is effectively reduced, which significantly improves the service life and stability of the punch.

[0023] 2. By placing the punch fixing assembly in the middle of the punch fixing plate and the pressure plate, the force on the punch is more even, further reducing the risk of punch breakage;

[0024] 3. The double-layer clamping plate design not only has the function of pressing material, but also plays the role of unloading material, effectively protecting the punch from the influence of the punching side force, and solving the problem of frequent breakage of irregular punches in the current structure. Attached Figure Description

[0025] Figure 1 This is the front view of the first clamp insert;

[0026] Figure 2 This is a top view of the first clamp insert;

[0027] Figure 3 This is the front view of the second clamp insert;

[0028] Figure 4 This is a top view of the second clamp insert;

[0029] Figure 5 This is the front view of the third clamp insert;

[0030] Figure 6 This is a top view of the third clamp insert;

[0031] Figure 7 This is the front view of the irregular punch;

[0032] Figure 8 This is a top view of the irregular punch;

[0033] Figure 9 This is a view of the punch fixing component in the mold-open state;

[0034] Figure 10 This is a view of the punch fixing component in the mold-closed state;

[0035] Figure 11 This is a schematic diagram of the mold closing state;

[0036] Figure 12 This is a schematic diagram of the mold opening state.

[0037] Explanation of reference numerals in the attached drawings: 1. Punch clamping plate; 2. Punch fixing plate; 3. Pressure plate; 4. Irregular punch; 41. Limiting protrusion; 42. Protruding pin plate; 51. First clamping plate insert; 511. First punch groove; 512. First shoulder; 52. Second clamping plate insert; 521. Second shoulder; 523. Second punch groove; 524. Protrusion slot; 53. Third clamping plate insert; 531. Movable groove; 532. First locking groove; 533. Second locking groove. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-12 This application will be described in further detail.

[0039] This application discloses a non-breakable irregular punch mold, including a punch clamping plate 1, a punch fixing plate 2, and a pressure plate 3. A punch fixing assembly is disposed within the punch fixing plate 2 and the pressure plate 3, and an irregular punch 4 is fixedly disposed within the punch fixing assembly. The punch fixing assembly is located in the middle of the punch fixing plate 2 and the pressure plate 3. The irregular punch 4 includes a protruding pin plate 42, which is formed along the length direction of the irregular punch 4 and is configured as an irregular plate-shaped protrusion. A protrusion forming a limiting protrusion 41 is formed on the upper part of the irregular punch 4, and the protruding pin plate 42 and the limiting protrusion 41 are not coplanar. The height of the irregular punch 4 is set to 30mm.

[0040] The punch fixing assembly includes a first clamping plate insert 51, a second clamping plate insert 52, and a third clamping plate insert 53. The third clamping plate insert 53 is locked onto the punch clamping plate 1 by a locking pin and screws. A movable groove 531 is formed within the third clamping plate insert 53. The first clamping plate insert 51 and the second clamping plate insert 52 are movably disposed within the movable groove 531, with the second clamping plate insert 52 positioned on top of the first clamping plate insert 51. A first engaging groove 532 and a second engaging groove 533, communicating with the movable groove 531, are also formed within the third clamping plate insert 53. The first engaging groove 532 and the second engaging groove 533 are located on the same side. In the mold-closed state, a certain distance is provided between the bottom of the first engaging groove 532 and the bottom of the first shoulder 512. This arrangement provides sufficient clearance for the movement of the first clamping plate insert 51, allowing it to have a sufficient range of motion. The second clamping plate insert 52 and the first clamping plate insert 51 each have a shoulder on one side, forming a second shoulder 521 and a first shoulder 512. The second shoulder 521 engages with the second locking groove 533, and the first shoulder 512 engages with the first locking groove 532. The second clamping plate insert 52 has a through groove forming a second punch groove 523, the shape of which matches the shape of the irregular punch 4. The second clamping plate insert 52 also has a protrusion locking groove 524 communicating with the second punch groove 523, the shape of which matches the shape of the limiting protrusion 41. The first clamping plate insert 51 has a through groove forming a first punch groove 511, the shape of which matches the shape of the irregular punch 4. The irregular punch 4 is disposed in the first punch groove 511 and the second punch groove 523, and the irregular punch 4 is engaged in the protrusion groove 524 by the limiting protrusion 41.

[0041] The implementation principle of this application embodiment is as follows: the first clamping plate insert 51 and the second clamping plate insert 52 are assembled in the third clamping plate insert 53. The third clamping plate insert 53 is locked onto the punch clamping plate 1 by a locking pin and screws. When the mold is opened, the punch clamping plate 1 moves upward, which in turn drives the third clamping plate insert 53 upward. The third clamping plate insert 53 drives the second clamping plate insert 52 to move upward synchronously through the setting of the second snap-fit ​​groove 533. The second clamping plate insert 52 is driven by the protrusion snap-fit ​​groove 524 to move the insert installed inside the second clamping plate insert 52. As the shaped punch 4 moves upward, due to the pre-set allowance in the first retaining groove 532, when the second clamping plate insert 52 moves upward, the first clamping plate insert 51 only moves with the third clamping plate insert 53, but the first clamping plate insert 51 itself does not move upward with the third clamping plate insert 53. This causes the shaped punch 4 to move upward within the first punch groove 511, so that the first clamping plate insert 51 and the second clamping plate insert 52 are in contact with each other in the mold-closed state, and a gap is created between the first clamping plate insert 51 and the second clamping plate insert 52 after the mold is opened. During this process, the third clamping plate insert 53 fixes the second clamping plate insert 52, and the second clamping plate insert 52 protects and fixes the shaped punch 4. The shaped punch 4 is pressed and ejected during the movement of the third clamping plate insert 53. During the punching process, the shaped punch 4 is not affected by factors such as the lateral force of punching and thus does not break on its own.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A type of anti-breakage irregular-shaped punch mold, characterized in that: The device includes a punch clamp (1), a punch fixing plate (2), and a pressure plate (3). A punch fixing assembly is provided within the punch fixing plate (2) and the pressure plate (3). A shaped punch (4) is fixedly installed within the punch fixing assembly. The punch fixing assembly is located in the middle of the punch fixing plate (2) and the pressure plate (3). The shaped punch (4) includes a protruding pin plate (42), which is formed along the length of the shaped punch (4). The protruding pin plate (42) is provided with… The punch fixing assembly consists of an irregular plate-shaped protrusion, a first clamping plate insert (51), a second clamping plate insert (52), and a third clamping plate insert (53). The third clamping plate insert (53) has a movable groove (531). The third clamping plate insert (53) also has a first locking groove (532) and a second locking groove (533) that communicate with the movable groove (531). The second clamping plate insert (52) has a through groove to form a second punch groove (523).

2. The anti-breakage irregular punch mold according to claim 1, characterized in that: The irregular punch (4) has a protrusion on its upper part to form a limiting protrusion (41), and the protruding pin plate (42) and the limiting protrusion (41) are not coplanar.

3. The anti-breakage irregular punch die according to claim 1, characterized in that: The height of the irregular punch (4) is set to 30mm.

4. The anti-breakage irregular punch die according to claim 1, characterized in that: The first clamping plate insert (51) and the second clamping plate insert (52) are movably disposed in the movable groove (531), and the second clamping plate insert (52) is disposed on top of the first clamping plate insert (51).

5. The anti-breakage irregular punch die according to claim 4, characterized in that: The second clamping plate insert (52) and the first clamping plate insert (51) are respectively provided with a shoulder to form a second shoulder (521) and a first shoulder (512). The second shoulder (521) is engaged with the second snap-fit ​​groove (533), and the first shoulder (512) is engaged with the first snap-fit ​​groove (532).

6. The anti-breakage irregular punch die according to claim 4, characterized in that: The second clamp insert (52) is also provided with a protrusion slot (524) that communicates with the second punch slot (523).

7. A non-breakable irregular punch die according to claim 4, characterized in that: The first clamping plate insert (51) has a through groove to form the first punch groove (511).

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