Integrated high-precision bending punch

Abstract

The utility model provides an integrated high-precision bending punch which is provided with a forming face, a local forming step, an avoiding position and a forming R angle, the whole bending punch is fixedly installed on a die, the avoiding position avoids a part and a protruding position of a forming die block, and the local forming step is located at the forming position of the bending punch and the part. An integrated design and machining mode is adopted, workpieces with high precision and high smoothness requirements are effectively achieved, die marks are obviously eliminated through design and machining of a mechanical die, and the requirement for attractive appearance of parts is met.

Description

Technical Field

[0001] The utility model relates to the technical field of die design and manufacturing, in particular to an integrated high-precision bending punch. Background Art

[0002] With the continuous development of the die industry, customers not only put forward higher requirements for product technology, but also pay more attention to the quality of product appearance. When there are appearance requirements for the product, during the first trial mold or production of the die, since most of the bending punches are inserts, it is easy to cause obvious die marks around the convex grains of the stamping parts. Since the convex grains of the part bulge are relatively close to the root of the bend, in order to ensure sufficient bending, at the same time, the avoidance position corresponding to the convex grain in the bending position should be considered, and also for the convenience of processing, a separate insert is made for the bending position corresponding to the convex grain. However, during the bending process, obvious die marks appear at the insert position of the product.

[0003] As Figure 3 shown, the old punch uses a split structure, which is assembled with multiple parts. Due to the existence of secondary processing and assembly errors, the joint is uneven, and obvious die marks appear at the insert position of the product. Obvious bad imprints will appear on the appearance of the actual formed product, affecting the appearance smoothness and beauty of product processing. Content of the Utility Model

[0004] The utility model provides an integrated high-precision bending punch. By canceling the insert of the bending punch and making it integrated, on the premise of being able to meet the avoidance of the convex grain of the part and the convex position of the forming module, the width of the avoidance is minimized as much as possible. The problem of die marks on the product is significantly improved, avoiding the generation of die marks and meeting the requirements of the part for appearance beauty.

[0005] To solve the above problems, the utility model provides an integrated high-precision bending punch, including a bending punch. The bending punch is provided with a forming surface, a local forming step, an avoidance position, a tool-leaning position and a forming R corner. The bending punch is integrally formed and is fixedly installed with the die. The avoidance position avoids the convex positions of the part and the forming module. The local forming step is located at the forming position of the bending punch and the part. The tool-leaning position positions the bending punch.

[0006] Preferably, the bending punch is respectively provided with two positioning pin holes and two fixing screw holes, and is fixedly connected with the upper die base of the die through two fixing screws and two positioning pins respectively.

[0007] The bending punch is fixedly connected with the upper die base of the die through two fixing screws and two positioning pins respectively, with firm fixation and stable stamping work.

[0008] Preferably, the clearance distance of the avoidance position is greater than the convex distance position of the part and the forming module.

[0009] The clearance distance of the avoidance position is greater than the protrusion distance position of the part and the forming module, and it is overall adapted to the bending and stamping work.

[0010] Preferably, the surface finish of the forming surface is above R1.6.

[0011] The surface finish of the forming surface of the bending punch is above R1.6, which is convenient for the stamping appearance surface to be flat and avoids the generation of bending imprints.

[0012] Preferably, the local forming step uses milling to process the bending punch corresponding to the forming position of the part.

[0013] Preferably, the bending punch is located on the upper stripper plate of the mold and is connected to the stop plate.

[0014] Preferably, the bending punch is integrally formed and processed for overall bending and stamping.

[0015] Preferably, the bending punch corresponds to the forming module of the lower template.

[0016] Preferably, a lower die base, ejector pins, springs and stop screws are provided below the part.

[0017] The beneficial effects of the present utility model are as follows: By canceling the insert of the bending punch and making it integral, on the premise of being able to meet the avoidance of the protrusion of the part and the forming module, the width of the avoidance is minimized as much as possible, and the problem of product die marks is significantly improved, avoiding the generation of die marks. Through the improvement of the bending punch of the convex mold, the integral design and processing method are adopted, effectively realizing the parts with high precision and high surface finish requirements. The design and processing of the mechanical mold significantly eliminate die marks and meet the requirements of the part for appearance beauty. It has the following advantages:

[0018] The insert of the bending punch of the mechanical mold is canceled, and the integral punch design is used to eliminate the secondary processing error and assembly error, achieving the elimination of obvious imprints on the appearance;

[0019] The fixed connection design and processing of the integral bending punch of the mechanical mold;

[0020] The design of the mechanical mold for simplifying the structure of high-quality appearance parts, including a forming module, ejector pins, springs and stop screws. Brief Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the integral high-precision bending punch of the embodiment of the present utility model;

[0022] Figure 2 It is a schematic structural diagram of the assembly of the embodiment of the present utility model and the mold;

[0023] Figure 3It is a schematic structural diagram of an existing old bending punch.

[0024] Attached drawing

[0025] 1. Forming surface; 2. Forming R corner; 3. Avoidance position; 4. Local forming step; 5. Tool-leaning position; 6. Location pin hole; 7. Fixed screw hole; 8. Bending punch; 9. Part; 10. Ejector pin; 11. Forming module; 12. Lower template; 13. Lower backing plate; 14. Lower die base; 15. Spring 1; 16. Locking screw; 17. Upper die base; 18. Upper backing plate; 19. Upper clamping plate; 20. Stop plate; 21. Anti-lifting plate; 22. Spring 2; 23. Insert. Specific embodiments

[0026] To more fully understand the technical content of the present invention, the technical solution of the present invention will be further introduced and described below in conjunction with the attached drawings and specific embodiments, but not limited thereto.

[0027] As Figures 1 to 3 shown, in a specific embodiment of the present invention, an integrated high-precision bending punch includes a bending punch 8, the bending punch 8 is provided with a forming surface 1, a local forming step 4, an avoidance position 3, a tool-leaning position 5 and a forming R corner 2. The bending punch 8 is integrally installed and fixed with the mold. The avoidance position 3 avoids the protruding positions of the part 9 and the forming module 11. The local forming step 4 is located at the forming position of the bending punch 8 and the part 9. The tool-leaning position 5 positions the bending punch 8.

[0028] Further, the bending punch 8 is respectively provided with two location pin holes 6 and two fixed screw holes 7, and is fixedly connected to the upper die base 17 of the mold through two fixed screws and two location pins.

[0029] The bending punch 8 is fixedly connected to the upper die base 17 of the mold through two fixed screws and two location pins respectively, with firm fixation and stable stamping work.

[0030] Further, the clearance distance of the avoidance position 3 is greater than the protruding distance positions of the part 9 and the forming module 11.

[0031] The clearance distance of the avoidance position 3 is greater than the protruding distance positions of the part 9 and the forming module 11, which is overall adapted to the bending and stamping work.

[0032] Further, the surface finish of the forming surface 1 is above R1.6.

[0033] The surface finish of the forming surface 1 of the bending punch 8 is above R1.6, which is convenient for the stamping appearance surface to be flat and avoids generating bending imprints.

[0034] Further, the local forming step 4 is formed by milling the bending punch 8 corresponding to the forming position of the part 9.

[0035] Further, the bending punch 8 is located on the upper stripper plate 21 of the mold and is connected to the stop plate 20.

[0036] Further, the bending punch 8 is integrally formed and processed for overall bending and stamping.

[0037] Further, the bending punch 8 corresponds to the forming module 11 of the lower template 12.

[0038] Further, a lower die base 14, ejector pins 10, first springs 15 and check screws 16 are provided below the part 9.

[0039] The mold structure of this embodiment further includes an upper die base 17, an upper backing plate 18, an upper clamping plate 19, a stop plate 20, a stripper plate 21, second springs 22 and a lower backing plate 13.

[0040] The beneficial effects of the present utility model are as follows: By eliminating the insert 23 of the bending punch 8 and making it an integral type, on the premise of being able to avoid the convex part of the part 9 and the protruding position of the forming module 11, the width of the avoidance is minimized as much as possible. After re-testing the mold, the problem of product mold marks has been significantly improved, avoiding the generation of mold marks. Through the improvement of the bending punch 8 of the convex part mold, the integral design and processing method are adopted, effectively realizing parts with high precision and high surface finish requirements. The design and processing of the mechanical mold have significantly eliminated mold marks and meet the requirements of the part 9 for aesthetic appearance. It has the following advantages:

[0041] The insert 23 of the bending punch 8 of the mechanical mold is eliminated, and an integral punch design is used to eliminate the secondary processing error and assembly error, achieving the elimination of obvious imprints on the appearance;

[0042] The fixed connection design and processing of the integral bending punch of the mechanical mold;

[0043] The design of a simplified structure mechanical mold for high-quality appearance parts, including a forming module 11, ejector pins 10, first springs 15 and check screws 16.

[0044] The above is only the preferred embodiment of this patent, and does not limit the scope of this patent. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings, directly or indirectly applied in other related technical fields, shall fall within the protection scope of this patent.

Claims

1. One-piece high-precision bending punch, characterized in that: It includes a bending punch, which is provided with a forming surface, a local forming step, an avoidance position and a forming R angle. The bending punch is installed and fixed to the mold as a whole. The avoidance position avoids the protruding position of the part and the forming module. The local forming step is located at the forming position of the bending punch and the part. The bending punch is respectively provided with two positioning pin holes and two fixing screw holes, and is fixedly connected to the upper mold base of the mold by two fixing screws and two positioning pins.

2. The integrated high-precision bending punch according to claim 1, characterized in that: The gap distance of the avoidance position is greater than the protrusion distance position between the part and the forming module.

3. The integrated high-precision bending punch according to claim 1, characterized in that: The surface finish of the molding surface is R1.6 or above.

4. The integrated high-precision bending punch according to claim 1, characterized in that: The local forming step is processed by milling the bending punch, corresponding to the forming position of the part.

5. The integrated high-precision bending punch according to claim 1, characterized in that: The bending punch is located on the upper stripping plate of the die and is connected to the stop plate.

6. The integrated high-precision bending punch according to claim 1, characterized in that: The bending punch is formed in one piece and is integrally bent and punched.

7. The integrated high-precision bending punch according to claim 1, characterized in that: The bending punch corresponds to the forming module of the lower template.

8. The integrated high-precision bending punch according to claim 1, characterized in that: A lower die seat, an ejector pin, a spring and a stop screw are arranged below the part.

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