A punching needle die structure for high-strength steel plates

Abstract

The utility model provides a punching needle mold structure for high-strength steel plates, comprising a punching needle and a mold. The mold is provided with a mold sleeve, which cooperates with a hanging platform of the punching needle to punch high-strength steel plate parts. The surface of the hanging platform is conical, and the punching needle is made of high-strength material. The punching needle with a conical surface hanging platform and high-strength hardness material is adopted. When high-strength plate products are mass-produced, the force-bearing area of ​​the punching needle hanging platform is increased, and the mold sleeve for designing and installing the punching needle is matched, and the conical punching needle is matched to form a smooth processing and application process, thereby solving the problem of the punching needle breakage, and the mold sleeve is detachable, which is convenient for replacing the mold sleeve and repairing, and the production is stable, and the service life of the punching needle and the mold is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mold design and manufacturing, in particular to a punching needle mold structure for high-strength steel plates. Background Art

[0002] With the rapid development of molds, especially the significantly increased speed of vehicle model updates and iterations, the replacement of automotive stamping parts has become more frequent. In particular, the use of high-strength steel plates in stamping production of automotive parts has become increasingly high. During the stamping production of products, the punching needles are prone to breakage, which will cause losses to the stamping plant. On the one hand, it reduces the stability and production efficiency of the production process and increases the scrap rate of parts. On the other hand, the broken punching needles may fall onto other mold parts, causing the mold to explode, increasing the number of mold repairs and production downtime.

[0003] like Figure 3 As shown, the existing punching needle 11 is conventionally used in the technical field as a standard punch for thick plate blanking, especially for automobile seat products made of SPH590 high-strength steel plate, using a conventional punching structure, the punching needle is made of SKH-51, and the hardness is HRC61~64 degrees. Due to the thickness and hardness of the material, the small batch production is subjected to tensile load and compression load, which causes the stress concentration at the root of the hanging table and causes damage. When high-strength plate products are mass-produced, the punching machine speed is fast, resulting in a sharp increase in the tensile force on the punching needle, causing the punching needle to break, and the matching mold cannot be disassembled, and the overall maintenance is more troublesome. Utility Model Content

[0004] The utility model provides a punching needle mold structure for high-strength steel plates, which replaces ordinary hanging platform punching needles with conical hanging platform punching needles, increases the force-bearing area of ​​the punching needle hanging platform and makes it uniform, and matches the design of a mold sleeve for installing the punching needle, matching the conical punching needle to form a smooth processing and application process, thereby solving the problem of punching needle breakage.

[0005] In order to solve the above problems, the utility model provides a punching needle mold structure for high-strength steel plates, including a punching needle and a mold. The mold is provided with a mold sleeve, which cooperates with the hanging platform of the punching needle to punch high-strength steel plate parts. The surface of the hanging platform is conical, and the punching needle is made of high-strength material.

[0006] Preferably, the cone angle of the hanging platform is 45 degrees or 30 degrees.

[0007] The cone angle of the hanging table is 45 degrees or 30 degrees. The cone angle and force-bearing area are large, the punching needle is evenly stressed and is not easy to be damaged or broken.

[0008] Preferably, the punching needle is made of SKH-51 with a hardness of HRC61-64 degrees.

[0009] The punching needle is made of high-strength material with high hardness, high wear resistance and strength, and long service life.

[0010] Preferably, the countersunk hole of the die sleeve is located on the clamping plate of the die and is machined by a gong.

[0011] Preferably, the countersunk hole of the die sleeve corresponds to the position of the conical surface of the punch pin.

[0012] The countersunk hole of the die sleeve corresponds to the position of the conical surface of the punch needle. The conical surface has a large force-bearing area and uniform force, the punch needle stamping production is stable, the punch needle is not easy to break, the loss of products and mold supporting parts is reduced, and the service life of the punch needle is increased.

[0013] Preferably, the mold sleeve is a removable insert.

[0014] The die sleeve is a detachable insert. When it and the punch needle are worn, the die sleeve can be replaced separately, which is convenient for mold maintenance and improves the service life of the mold.

[0015] Preferably, the conical surface roughness of the punch needle is greater than or equal to R1.2.

[0016] Preferably, the material of the high-strength steel plate part is SPH590.

[0017] The beneficial effects of the utility model are: the punch needle with conical surface hanging platform and high strength hardness material are used. When the high-strength plate products are mass-produced, the force-bearing area of ​​the punch needle hanging platform is increased, and the die sleeve for installing the punch needle is matched with the design, and the conical punch needle is matched to form a smooth processing and application process, thereby solving the problem of the punch needle breaking, and the die sleeve is detachable, which is convenient for replacing the die sleeve. It has the following advantages:

[0018] High-strength and high-precision mechanical mold conical punching needle, which can be matched with the mold to extend its service life;

[0019] The die sleeve design of the conical punching needle mechanical die is detachable, which is convenient for replacement and maintenance;

[0020] The conical punching needle of the hanging platform increases the force-bearing area of ​​the punching needle hanging platform and evenly bears the force, so the production is stable and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic cross-sectional structure diagram of a punch pin and a die sleeve according to an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a punching needle mold according to an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a punch pin in the prior art.

[0024] Attached photos

[0025] 1. Punch needle; 2. Die sleeve; 3. Upper pad; 4. Equal height sleeve; 5. Upper die seat; 6. Upper clamping plate; 7. Stop plate; 8. Punch; 9. Stripper plate; 10. Upper limit block; 11. Existing punch needle. DETAILED DESCRIPTION

[0026] In order to more fully understand the technical content of the present invention, the technical solution of the present invention is further introduced and illustrated in conjunction with the accompanying drawings and specific embodiments, but is not limited thereto.

[0027] like Figures 1 to 3 As shown, a specific embodiment of the utility model is a punching needle mold structure for high-strength steel plates, including a punching needle 1 and a mold. The mold is provided with a mold sleeve 2, which cooperates with the hanging platform of the punching needle 1 to punch high-strength steel plate parts. The surface of the hanging platform is conical, and the punching needle 1 is made of high-strength material.

[0028] Preferably, the cone angle of the hanging table is 45 degrees or 30 degrees.

[0029] The cone angle of the hanging platform is 45 degrees or 30 degrees. The cone angle and the force-bearing area are large, and the punching needle 1 is evenly stressed and is not easy to be damaged or broken.

[0030] Preferably, the material of the punching needle 1 is SKH-51, and the hardness is HRC61-64 degrees.

[0031] The punching needle 1 is made of high-strength material, has high hardness, high wear resistance and strength, and long service life.

[0032] Preferably, the countersunk holes of the die sleeve 2 are located on the clamping plate of the die and are machined by gong.

[0033] Preferably, the countersunk hole of the die sleeve 2 corresponds to the position of the conical surface of the punch pin 1 .

[0034] The countersunk hole of the die sleeve 2 corresponds to the position of the conical surface of the punch pin 1. The conical surface has a large force-bearing area and uniform force. The punch pin 1 has stable stamping production and is not easy to break, which reduces the loss of products and mold supporting parts and increases the service life of the punch pin 1.

[0035] Preferably, the mold sleeve 2 is a detachable insert.

[0036] The die sleeve 2 is a detachable insert. When the die sleeve 2 and the punching needle 1 are worn, the die sleeve 2 can be replaced separately, which is convenient for mold maintenance and improves the service life of the mold.

[0037] Preferably, the conical surface roughness of the punch pin 1 is greater than or equal to R1.2.

[0038] Preferably, the material of the high-strength steel plate part is SPH590.

[0039] like Figure 1 As shown in the figure, by replacing the conical punch needle 1, the material is SKH-51, the hardness is HRC61~64 degrees, and the punch needle 1 of the splint is countersunk. By countersinking the punch needle 1 of the splint and replacing the conical punch needle 1, the problem of the broken punch needle 1 is completely solved, so that the product can be smoothly implemented in high-speed mass production.

[0040] like Figure 2 As shown in the improved punching needle 1 and the assembly mold structure diagram, the hanging platform is changed to a conical shape, so that the stress concentration phenomenon of tensile load and compressive load is effectively differentiated, so that its service life is greatly improved, which is about 10 times the service life of the existing punching needle 11.

[0041] The punching needle 1 and the assembly mold structure of this embodiment also include an upper pad 3, a sleeve of equal height 4, an upper mold base 5, an upper clamping plate 6, a stop plate 7, a punch 8, a stripping plate 9 and an upper limit block 10, which together with the punching needle 1 and the mold sleeve 2 form a mold as a whole.

[0042] The beneficial effects of the utility model are: the punching needle 1 with a conical surface hanging platform and high-strength hardness material are used. When the high-strength plate products are mass-produced, the force-bearing area of ​​the punching needle 1 hanging platform is increased, and the die sleeve 2 for matching the design and installation of the punching needle 1 is matched to form a smooth processing and application process, thereby solving the problem of the breakage of the punching needle 1, and the matching die sleeve 2 is detachable, which is convenient for replacing the die sleeve 2. It has the following advantages:

[0043] 1) High-strength and high-precision mechanical mold conical punch 1, which has a longer service life when matched with the mold;

[0044] 2) The die sleeve 2 is designed with the conical punching needle 1 mechanical die, and the die sleeve 2 is detachable for easy replacement and maintenance;

[0045] 3) The conical punching needle 1 of the hanging platform increases the force-bearing area of ​​the punching needle 1 hanging platform, and the force is evenly applied, so the production is stable and the work efficiency is high.

[0046] The above description is only the preferred implementation mode of this patent and does not limit the scope of this patent. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings, directly or indirectly used in other related technical fields, falls within the scope of protection of this patent.

Claims

1. A punching needle die structure for high-strength steel plate, characterized in that: It comprises a punching needle and a die. The die is provided with a die sleeve, which cooperates with the hanging platform of the punching needle to punch high-strength steel plate parts. The surface of the hanging platform is conical, and the punching needle is made of high-strength material.

2. The punching needle mold structure for high-strength steel plate according to claim 1, characterized in that: The conical angle of the hanging platform is 45 degrees or 30 degrees.

3. The punching needle mold structure for high-strength steel plate according to claim 1, characterized in that: The punching needle is made of SKH-51 with a hardness of HRC61-64.

4. The punching pin die structure for high-strength steel plate according to claim 1, characterized in that: The countersunk hole of the mold sleeve is located on the clamping plate of the mold and is processed by a gong.

5. The punching pin die structure for high-strength steel plate according to claim 1, characterized in that: The countersunk hole of the die sleeve corresponds to the position of the conical surface of the punch needle.

6. The punching pin die structure for high-strength steel plate according to claim 1, characterized in that: The mold sleeve is a detachable insert.

7. The punching pin die structure for high-strength steel plate according to claim 1, characterized in that: The conical surface roughness of the punching needle is greater than or equal to R1.

2.

8. The punching pin die structure for high-strength steel plate according to claim 1, characterized in that: The material of the high-strength steel plate parts is SPH590.

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