Secondary trimming method for die

Abstract

The invention relates to a secondary trimming method for a die. Specific trimming procedures are that a lower-die trimming knife is matched with an upper-fie trimming knife, whole waste material is cut along a trimming line, the cut waste material slides down to a cutting edge of a lower-die waste material knife along a waste material rod, an upper die moves upward, trimmed components are taken away, then a next drawing component is put in, a lower die moves downward until the die is closed again, an upper-die waste material knife also moves downward and cuts a previous waste material matched with the lower-die waste material knife and slides out of the die while the upper-die trimming knife and the lower-die trimming knife trim the drawing component, at the same time, the entire waste material cut by the trimming knife slides to the cutting edge of the lower-die waste material knife again through the waste material rod at the same time, and circulation is conducted in this way. According to the technical scheme of the secondary trimming method for the die, the trimming quality can be guaranteed, and at the same time trimming can not be influenced by the size of the waste material.

Description

technical field [0001] The invention belongs to the technical field of moulds, in particular to a method for secondary trimming of moulds. Background technique [0002] During the production process of the mold, trimming is an inevitable process in the mold production. In order to ensure the normal production of the mold, generally in the manual production line, it is required that the waste generated during trimming can slide out of the mold; in the automatic production line, it is required Scrap is able to slide out of the machine. In order to realize the purpose that the scrap can slide out of the mold or the machine tool, the current technology is to increase the scrap slot, increase the height of the mold, add spring pins, etc., but the increase of the above-mentioned structures still requires that the size of the scrap should not be too large, usually Under the circumstances, it is required that the diagonal length of the waste should not exceed 450-600mm. [0003] T...

AI Technical Summary

Problems solved by technology

[0005] 1. The splicing of the trimming knife and the scrap knife will leave marks on the edge of the trimmed product, which makes it difficult to guarantee the trimming quality

[0006] 2. The splicing gap between the trimming knife and the waste knife is high, which increases the difficulty of assembling the knife block and prolongs the mold manufacturing and maintenance cycle

[0007] 3. Since the waste knife is arranged on the passage where the waste material slides down, in order to ensure that the waste material will not be disturbed when it slides down, the position of the waste material knife needs to be carefully set, and sometimes the edge must be partially trimmed. The remaining waste material must continue to be trimmed in the next process, which is complicated. And it is not easy to guarantee the trimming quality

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