Punching waste jumping prevention structure applied to automobile hardware punching

Abstract

The utility model discloses a punching waste jumping prevention structure applied to automobile hardware punching. The punching waste jumping prevention structure comprises a punch and a female die matched with the punch. The female die is provided with a waste punching hole, the side wall of the waste punching hole is provided with a first cone, so that the aperture of the upper end face of the waste punching hole is larger than that of the lower end face of the waste punching hole, aiming at the problems of the background technology, the structural design of the die is improved, multiple times of product debugging is not needed, the production process is greatly optimized compared with the original production mode, and the production efficiency is improved. And particularly, a tiny cone is arranged at the cutting edge of the female die, so that the bottom of the cutting edge of the female die is smaller than blanking waste materials. Therefore, the shrunk blanking waste material is extruded, the friction force between the waste material and the female die is increased, and the waste material can be prevented from rebounding. The shrinkage amount of the waste varies depending on the blanking condition.

Description

Technical Field

[0001] The utility model relates to the field of automobile hardware, in particular to a punching waste prevention structure used in automobile hardware stamping. Background Art

[0002] In the existing automobile hardware stamping dies, the punch (punch) generates magnetism due to long-term friction during production stamping. When the punch moves upward and separates from the die, it will absorb the waste and bring out the die, thus affecting the normal operation of the mold and preventing effective production. Utility Model Content

[0003] In order to solve the above problems, the present technical solution provides a punching waste prevention structure applied to automobile hardware stamping.

[0004] To achieve the above purpose, the technical solution is as follows:

[0005] A punching waste prevention structure used in automobile hardware stamping includes a punch and a die matched with the punch;

[0006] The die is provided with a waste punching hole, and the side wall of the waste punching hole is provided with a first taper so that the diameter of the upper end hole of the waste punching hole is larger than the diameter of the lower end hole.

[0007] In some embodiments, the waste punching hole is provided with a second cone at the lower end of the first cone.

[0008] In some embodiments, the waste punching hole is provided with a step portion at the lower end of the second cone.

[0009] In some embodiments, the distance between the punch and the uppermost end of the first cone is between 2.5-3.5 mm.

[0010] In some embodiments, the taper of the first taper is between 2.5-3.5 degrees.

[0011] The beneficial effects of this application are:

[0012] In view of the problems of the background technology, the present application improves the mold structure design and does not need to do multiple product debugging. The production process is greatly optimized compared with the original production method, and the production efficiency is improved. Specifically, a small cone is set at the edge of the die, so that the bottom of the die edge is smaller than the blanking waste. Therefore, the shrinking blanking waste is squeezed, and the friction with the die is increased, thereby preventing the waste from bouncing back. The shrinkage of the waste varies depending on the blanking conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of the embodiment of the utility model Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model Figure 2 . DETAILED DESCRIPTION

[0016] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] Please refer to Figure 1-2 As shown, the punching waste prevention structure used in automobile hardware stamping includes a punch 1 and a die 2 matched with the punch 1;

[0018] The die 2 is provided with a waste punching hole, and the side wall of the waste punching hole is provided with a first taper 3 so that the diameter of the upper end surface of the waste punching hole is larger than that of the lower end surface.

[0019] During stamping, due to the existence of the first cone, when the punch punches the waste into the waste punching hole, the waste has enough room to collide outward, and the extruded amount contacts the gradually shrinking conical surface during the stamping process, thereby increasing the friction between the extruded amount and the inner wall of the hole. In this way, it is difficult for the punch to bring out the waste when moving upward, avoiding affecting normal work.

[0020] In this embodiment, the waste punching hole is located at the lower end of the first cone 3 and is provided with a second cone 4. The second cone is designed so that the diameter of the upper end hole is smaller than that of the lower end hole. In this way, after the waste punches through the first cone, the waste will be clamped by the upper end face of the second cone, thereby further preventing the punch from bringing out the waste.

[0021] In this embodiment, the waste punching hole is provided with a step portion 5 at the lower end of the second cone 4 to prevent the waste from being carried out.

[0022] In this embodiment, the distance between the punch 1 and the uppermost end of the first cone 3 is between 2.5-3.5 mm, and the taper of the first cone 3 is between 2.5-3.5 degrees. In this structure, there are high requirements on the amount of punch penetration. The punch penetration value into the die is "3mm±0.5", and the reverse taper of the upper part of the die cutting edge is "3°±0.5°". It is necessary to ensure that the waste clamping die is not brought out by the punch in this range.

[0023] The present application has a simple structure and can effectively reduce mold repair costs. This production method can reduce product selection costs caused by production stamping and mold repair and maintenance costs.

[0024] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application. Other principles and basic structures that are the same or similar to those of the present application are within the protection scope of the present application.

Claims

1. The anti-punching waste structure used in automobile hardware stamping is characterized by: It comprises a punch (1) and a die (2) cooperating with the punch (1); The die (2) is provided with a waste punching hole, and the side wall of the waste punching hole is provided with a first taper (3) so that the diameter of the upper end hole of the waste punching hole is larger than the diameter of the lower end hole.

2. The punching waste prevention structure for automobile metal stamping according to claim 1 is characterized in that: The waste punching hole is provided with a second cone (4) at the lower end of the first cone (3).

3. The punching waste prevention structure for automobile metal stamping according to claim 2 is characterized in that: The waste punching hole is provided with a step portion (5) at the lower end of the second cone (4).

4. The punching waste prevention structure for automobile metal stamping according to claim 2 is characterized in that: The distance between the punch (1) and the uppermost end of the first cone (3) is between 2.5 and 3.5 mm.

5. The punching waste prevention structure for automobile metal stamping according to claim 4 is characterized in that: The taper of the first cone (3) is between 2.5 and 3.5 degrees.

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