Drawing die

A technology for drawing dies and mold bases, which is applied in the field of sheet metal forming equipment, can solve the problems of easy generation of trimming iron chips, and the inability to guarantee the appearance quality of automobile panels, so as to solve the problem of waste discharge, ensure the appearance quality, and reduce waste area effect

Active Publication Date: 2015-06-24
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The drawing die includes the upper die base, the lower die and the blank holder. The pressing surface of the existing drawing die is a flat structure, and the waste area generated during the working process is relatively large. In order to reduce the

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Embodiment Construction

[0025] The core of the present invention is to provide a drawing die, so as to reduce the waste material area after drawing and shrinkage under the condition of ensuring the appearance quality of automobile covering parts, and solve the waste discharge problem in the trimming process.

[0026] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the accompanying drawings.

[0027] Please refer to Figure 1-Figure 4 , figure 1 It is the axonometric drawing of the blank holder and the split punch in the drawing die provided by the present invention; figure 2 It is the axonometric drawing of the lower die seat and the split punch in the drawing die provided by the present invention; image 3 for figure 2 The top view of the lower mold base and the split punch shown; Figure 4 It is a schematic diagram of the structure of the pressing surface in the...

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Abstract

The invention discloses a drawing die which comprises an upper die base, a lower die base and a blank holder. The blank holder area of the blank holder is provided with a special-shaped blank holder face. The blank holder face comprises a plurality of convex parts and a plurality of concave parts. The convex parts and the concave parts are in alternative distribution, and the adjacent convex parts and concave parts are connected. The opening width of each convex part is equal to the opening width of the corresponding concave part. The largest depth of each convex part is equal to the largest depth of the corresponding concave part. The convex parts and the concave parts form the wave-shaped blank holder face, wastes after drawing can be shrunk by the wave-shaped blank holder face, the appearance quality of car cover parts is guaranteed, the waste area after drawing and shrinking is reduced, and the waste discharge problem in a trimming process is solved.

Description

Technical field [0001] The invention relates to the technical field of sheet metal forming equipment, in particular to a drawing die. Background technique [0002] In the development of the whole automobile, the market cycle of outer covering parts is short, and the changes are more frequent. The shape of the automobile covering parts is complicated, the size is large, the accuracy requirements are high, and the appearance quality requirements are strict. Therefore, the drawing die is the automobile cover Important equipment in the production of parts. [0003] The drawing die includes an upper die seat, a lower die and a blank holder. The pressing surface of the existing drawing die is a flat structure, and the area of ​​waste generated during the working process is relatively large. In order to reduce the waste after drawing shrinkage, the drawing can be guaranteed. For formability, it is necessary to set a corner cut on the drawing die, but the corner cut structure is prone to ...

Claims

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Application Information

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IPC IPC(8): B21D37/10B21D22/22B21D37/02
CPCB21D22/22B21D37/02B21D37/10
Inventor 何鹏申陈世涛卢桥王海玲徐肖
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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