Aluminum substrate die for kiss cutting product with simultaneous slitting of scrap edges

Abstract

The application relates to an aluminum substrate die for synchronously cutting off waste edges of punched products, and belongs to the technical field of stamping dies. The die comprises an upper die assembly and a lower die assembly which are opposite to each other. The upper die assembly is provided with a female die, and a square strip-shaped punch pin is embedded and installed at the edge of the female die. The lower die assembly comprises a male die corresponding to the female die and a jump plate structure at the outer side, the jump plate is elastically connected with a lower die base through guide columns, the top surface of the jump plate is provided with an open single-edge cutting edge corresponding to the position of the punch pin of the upper die, and the cutting surface is perpendicular to the extension direction of the waste edge. According to the application, the square strip-shaped punch pin is integrated on the upper die, and the matched jump plate cutting edge structure is arranged on the lower die, so that the stamping forming of the aluminum substrate product body and the cutting off of the waste edge can be synchronously completed in the same stamping stroke. The additional manual waste edge breaking step or the secondary punching cutting link in the traditional process is eliminated, the production cycle is greatly shortened, the production continuity and the overall efficiency are improved, and the overall production yield is significantly improved.

Description

Technical Field

[0001] This application relates to the technical field of stamping dies, and more specifically, to an aluminum substrate die for simultaneously cutting off scrap edges of stamped products. Background Technology

[0002] In the production of aluminum substrates, stamping is one of the core processes. The formed product typically has scrap edges that need to be removed in subsequent processes. In the industry, two common methods for removing these scrap edges are used. One method involves operators manually or using simple tools to break the scrap edges off the product body. This method requires additional manual operation, interrupts continuous production, significantly reduces overall efficiency, and manual force can easily lead to product deformation, substrate delamination, or edge tearing, affecting product yield. The second method involves re-pressing the semi-finished product onto a dedicated die to separately cut off the scrap edges. While this method achieves mechanical removal, it requires additional stamping equipment time, increasing equipment costs and energy consumption. Furthermore, the secondary clamping can easily cause positioning errors, leading to stamping position deviations and product scrap. Additionally, this method increases transfer and repositioning steps, extending the production cycle. Utility Model Content

[0003] In order to solve the problems of low efficiency, low yield and high cost in the stamping of aluminum substrates, this application provides an aluminum substrate mold for simultaneously cutting off the waste edges of stamped products.

[0004] A die for simultaneously cutting off scrap edges of a punched product includes an upper die assembly and a lower die assembly that fit together. The upper die assembly includes an upper die base and a female die fixed to the bottom of the upper die base. A square strip-shaped punch is embedded and installed on the edge of the female die. The lower die assembly includes a sub-die positioned corresponding to the position of the female die, a scaffold structure located outside the sub-die, and a lower die base connected to the bottom of the sub-die. The scaffold structure includes a scaffold and a guide post. The scaffold is elastically connected to the lower die base through the guide post. The top surface of the scaffold is provided with an open single-sided cutting edge corresponding to the position of the square strip-shaped punch of the upper die. The cutting surface of the cutting edge is perpendicular to the extension direction of the scrap edge.

[0005] Preferably, the cutting edge length of the square strip punch covers the entire length of the scrap edge of the product, its installation direction is parallel to the cutting line of the scrap edge, and the bottom of the square strip punch protrudes 0.5-2mm from the parting surface of the mother mold.

[0006] Preferably, the open single-sided cutting edge of the scaffold is made of high-hardness tool steel, the cutting edge gap is 5-8% of the thickness of the aluminum substrate, and a waste discharge channel penetrating the scaffold is provided on the rear side of the cutting edge.

[0007] Preferably, the guide post is vertically fixed to the lower mold base, the scaffold is provided with a linear bearing and is sleeved on the guide post through the linear bearing, the top of the linear bearing is provided with a limiting block, and a compression spring is provided between the guide post and the linear bearing to realize the elastic reset of the scaffold.

[0008] Preferably, the upper mold base is provided with a guide sleeve corresponding to the guide post, and the lower mold base is provided with a clearance hole to avoid the square strip punch. When the upper mold is pressed down, the square strip punch first contacts the scrap edge and pushes the scaffold plate down, and the scrap edge is synchronously sheared during the scaffold plate's downward movement.

[0009] Preferably, the waste discharge channel is inclined at 30°-45°, with its outlet end extending to the outside of the mold, and the inner wall of the waste discharge channel is polished.

[0010] The beneficial technical effects of this application are as follows:

[0011] 1. By directly integrating square strip-shaped punches onto the master mold and setting a matching springboard cutting edge structure in the sub-mold, the stamping of the main body of the product and the trimming of the scrap edges are completed simultaneously within the same stamping stroke. This eliminates the additional manual bending steps or secondary blanking of scrap edges required by traditional methods, saving time on repeated positioning, transfer and handling, secondary clamping, and equipment start / stop, significantly shortening the production cycle of a single product and improving the continuity and overall efficiency of the production line. Furthermore, it avoids quality problems such as product deformation, substrate delamination, edge tearing, or excessive burrs caused by improper or uneven force application in manual bending methods, significantly improving product dimensional accuracy, edge quality, and overall yield.

[0012] 2. The inclined waste discharge channel design on the scaffold structure, combined with the punching action, can automatically guide and discharge the cut waste edge, avoiding waste accumulation in the mold or working area. The polished inner wall of the channel reduces frictional resistance, ensuring smooth waste discharge. Automated waste discharge reduces the frequency of manual cleaning and operational risks, and improves the safety of the production environment and the continuity of the process.

[0013] 3. Precisely controlled blade clearance and high-hardness tool steel blades ensure a smooth shearing surface with minimal burrs, meeting high-quality requirements. The elastic reset mechanism of the scaffold structure ensures smooth and reliable cutting action and automatically resets after stamping, preparing for the next stamping. The design of the punch bottom protruding from the parting surface of the die ensures that the scrap edge cutting action is initiated first before the main forming pressure is fully applied, resulting in reasonable timing control. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an aluminum substrate mold for simultaneously cutting off the scrap edge of a punched product according to this embodiment.

[0015] Figure 2 This is a schematic diagram of the upper mold assembly in this embodiment.

[0016] Figure 3 This is a cross-sectional view of the scaffold structure in this embodiment.

[0017] Reference numerals in the attached drawings: 1. Upper mold base; 2. Female mold; 3. Square strip punch; 4. Sub-mold; 5. Lower mold base; 6. Skid plate; 7. Guide post; 8. Linear bearing; 9. Spring; 10. Limiting block; 11. Cutting edge; 12. Scrap discharge channel; 13. Relief hole; 14. Guide sleeve. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] Reference Figure 1-3 An aluminum substrate mold for simultaneously cutting off scrap edges of punched products includes an upper mold assembly and a lower mold assembly, which are mated to each other. The upper mold assembly includes an upper mold base 1 and a female mold 2 fixedly installed at the bottom of the upper mold base 1. A square strip-shaped punch 3 is embedded in the edge of the female mold 2. The cutting edge length of the square strip-shaped punch 3 covers the entire length of the scrap edge of the product, the installation direction is parallel to the cutting line of the scrap edge, and the bottom of the square strip-shaped punch 3 protrudes 0.5-2mm from the parting surface of the female mold 2 to ensure priority contact with the scrap. The lower mold assembly includes a sub-mold 4, a scaffold structure, and a lower mold base 5. The sub-mold 4 is positioned opposite the mother mold 2 and fixedly connected to the top of the lower mold base 5. A scaffold structure is configured on the outside of the sub-mold 4. The scaffold structure includes a scaffold 6 and multiple guide pillars 7 vertically fixed to the lower mold base 5. Multiple linear bearings 8 matching the number of guide pillars 7 are provided on the scaffold 6, and sliding fit is achieved by the linear bearings 8 being sleeved on the guide pillars 7. A limit block 10 is provided on the top of the linear bearing 8 to prevent it from falling out. A compression spring 9 is installed between the guide pillars 7 and the linear bearings 8 to give the scaffold 6 an elastic reset function. An open single-sided cutting edge 11 is machined on the top surface of the scaffold 6, the position of which corresponds to the square strip punch 3. The cutting surface is perpendicular to the extension direction of the scrap edge. The cutting edge 11 is made of high-hardness tool steel, and the gap of the square strip punch 3 is precisely controlled to be 5-8% of the thickness of the aluminum substrate. A 30°-45° inclined scrap discharge channel 12 is opened on the rear side of the cutting edge 11. The inner wall of the scrap discharge channel 12 is polished and extends to the outside of the mold. The lower mold base 5 has a pre-set clearance hole 13 corresponding to the punch position, while the upper mold base 1 is equipped with a guide sleeve 14 that cooperates with the guide post 7 to ensure alignment accuracy.

[0020] In the working process, when the upper die holder 1 presses down, the guide sleeve 14 first guides the guide post 7 to achieve initial positioning. The square strip punch 3 first contacts the scrap edge, pushing the scaffold 6 to move downward against the resistance of the spring 9. At this time, the female die 2 has not yet contacted the sheet metal. As the stamping stroke continues, the square strip punch 3 and the cutting edge 11 of the scaffold 6 form a shearing action, and the scrap edge is cut off along its entire length during the downward movement of the scaffold 6. The cut scrap slides into the inclined scrap channel under the action of gravity and stamping force, and is smoothly discharged from the die through the polished inner wall. At the same time, the female die 2 and the sub-die 4 close to complete the stamping of the main body of the product. When the upper die returns, the compression spring 9 pushes the scaffold 6 to accurately return to its initial height along the guide post 7, preparing for the next stroke. The downward stroke of the scaffold 6 is controlled by the limiting block 10 to avoid overloading the spring 9. The prominent design of the square strip punch 3 ensures that the cutting action takes precedence over the main body forming, avoiding deformation of the substrate; the elastic scaffold structure forms a dynamic shearing platform during the stamping process, and the combination of the blade gap 11 and high-hardness material ensures a smooth, burr-free cut surface; the waste discharge channel 12 enables automatic waste removal, eliminating manual intervention; the guide post 7 and guide sleeve 14 work together to ensure the accuracy of the cutting position and avoid secondary clamping errors. Ultimately, product forming and waste separation are completed simultaneously within a single stamping stroke, eliminating interruptions in traditional processes and improving efficiency and yield.

[0021] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aluminum substrate mold for simultaneously cutting off scrap edges in punching products, characterized in that: The device includes an upper mold assembly and a lower mold assembly that fit together. The upper mold assembly includes an upper mold base and a female mold fixed to the bottom of the upper mold base. A square strip-shaped punch is embedded and installed on the edge of the female mold. The lower mold assembly includes a sub-mold positioned corresponding to the position of the female mold, a scaffold structure located outside the sub-mold, and a lower mold base connected to the bottom of the sub-mold. The scaffold structure includes a scaffold and a guide post. The scaffold is elastically connected to the lower mold base through the guide post. The top surface of the scaffold is provided with an open single-sided cutting edge corresponding to the position of the square strip-shaped punch of the upper mold. The cutting surface of the cutting edge is perpendicular to the extension direction of the scrap edge.

2. The aluminum substrate mold for simultaneously cutting off scrap edges in punching products according to claim 1, characterized in that: The cutting edge of the square strip punch covers the entire length of the scrap edge of the product, and its installation direction is parallel to the cutting line of the scrap edge. The bottom of the square strip punch protrudes 0.5-2mm from the parting surface of the mold.

3. The aluminum substrate mold for simultaneously cutting off scrap edges in punching products according to claim 1, characterized in that: The open single-sided blade of the scaffold is made of high-hardness tool steel, the blade gap is 5-8% of the thickness of the aluminum substrate, and a waste discharge channel penetrating the scaffold is provided on the rear side of the blade.

4. The aluminum substrate mold for simultaneously cutting off scrap edges in punching products according to claim 1, characterized in that: The guide post is vertically fixed to the lower mold base. The scaffold is equipped with a linear bearing and is sleeved on the guide post through the linear bearing. A limiting block is provided at the top of the linear bearing. A compression spring is provided between the guide post and the linear bearing to realize the elastic reset of the scaffold.

5. The aluminum substrate mold for simultaneously cutting off scrap edges in punching products according to claim 1, characterized in that: The upper mold base is provided with a guide sleeve corresponding to the guide post, and the lower mold base is provided with a clearance hole to avoid the square strip punch. When the upper mold is pressed down, the square strip punch first contacts the scrap edge and pushes the scaffold plate to move down, and the scrap edge is synchronously sheared during the scaffold plate movement.

6. The aluminum substrate mold for simultaneously cutting off scrap edges in punching products according to claim 3, characterized in that: The waste discharge channel is inclined at 30°-45°, and its outlet end extends to the outside of the mold. The inner wall of the waste discharge channel is polished.

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