Novel drawing shell shearing device

Abstract

The invention discloses a novel drawing shell shearing device, which comprises an upper die and a lower die, wherein the upper die comprises a shearing chip, which is internally equipped with a returnsteel ball, a return spring and a screw; the lower die comprises a shearing ejector rod, a shearing female die and a movable base; the shearing ejector rod is arranged to the inner side of the movable base, and the lower surface is fixed to a spring arranged in a spring sleeve; and the other end of the spring is fixed to the bottom plate. According to the shearing device, the movable base is additionally arranged on the basis of the original die design, so that the return steel ball can be better attached to the inner wall of the shell in the return process, the shearing chip is allowed to control the consistency of four chamfers better in the shearing process, and the overall CPK value of a product in the production process is greatly improved.

Description

technical field [0001] The invention belongs to the field of battery production, in particular to a shearing device for deep-drawing shells. Background technique [0002] Deep drawing, also known as drawing, stretching, calendering, etc., refers to the process of stamping a certain shape flat blank obtained after blanking into various open hollow parts or reducing the diameter and increasing the height of the open hollow blank by using a mold. A kind of mechanical processing technology, which can be made into cylindrical, stepped, conical, spherical, box-shaped and other irregularly shaped thin-walled parts by deep-drawing technology. With the cooperation of the forming process, parts with extremely complex shapes can also be manufactured. Deep drawing processing is required in the production of battery cases. However, the R angle deviation of the traditional deep drawing and shearing process is relatively large, and the chamfering of the four sides cannot match the cover pl...

AI Technical Summary

Problems solved by technology

[0002] Deep drawing, also known as drawing, stretching, calendering, etc., refers to the process of stamping a certain shape flat blank obtained after blanking into various open hollow parts or reducing the diameter and increasing the height of the open hollow blank by using a mold. A kind of mechanical processing technology, which can be made into cylindrical, stepped, conical, spherical, box-shaped and other irregularly shaped thin-walled parts by deep-drawing technology. With the cooperation of the forming process, parts with extremely complex shapes can also be manufactured. Deep drawing processing is required in the production of battery cases. However, the R angle deviation of the traditional deep drawing and shearing process is relatively large, and the chamfering of the four sides cannot match the cover plate well. This increases the difficulty of punching the cover plate, and there is also a great potential for cell leakage

Images