Etching knife die and processing method thereof

Abstract

The invention discloses an etching knife die comprising a template and one or more knife arranged on the template, wherein a knife edge is arranged on the knife; the cross section of a blanking hole below the knife is trapezoidal; and the lower-end diameter of the blanking hole is greater than the upper-end diameter of the blanking hole. The invention also discloses a processing method of the etching knife die. The method comprises the steps of cutting to form a vertical blanking hole by utilizing a milling cutter through a CNC (Computer Numerical Control) precision carving machine and carrying out turn-by-turn downward expanding cutting from top to bottom on the inner wall of the straight hole by utilizing a dovetail cutter through the CNC precision carving machine to ensure that the cross section of the inner wall of the blanking hole is of a trapezoid which is small in upper part and big in lower part, wherein the included angles of the side edges and the bottom face of the trapezoid are 78-89 DEG. The etching knife die and the processing method thereof, disclosed by the invention, have the advantages that automatic waste discharge can be realized; the blanking piece is avoided being pulled when passing through the blanking hole to ensure that the blanking is smooth, the knife die is not pressed, the deformation and the breakdown of the etching knife die are not created; therefore, the product accuracy can be increased and the service life of the knife die is prolonged.

Description

technical field [0001] The invention relates to a knife mold, in particular to an etching knife mold and a processing method thereof. Background technique [0002] Etching dies are mainly used for cutting product labels in the die-cutting industry, and can be used for cutting modules and touch screens on LCD displays. The cutting effect is better than that of existing traditional machines, with high precision and high speed. Fast, therefore, etching dies show their superior effect in the cutting of product labels. The dimensional accuracy of the etching knife mold is very high, generally can be maintained at ±0.03mm, and the flatness of the knife edge can be maintained at about ±0.01. The defect of etching knife mold is that the highest knife height can only be about 2.0mm. In addition, in the large printing and electronic industries, roller molds are gradually put into use, and the production speed is doubled. However, due to the high price of roller molds, Better quality...

AI Technical Summary

Problems solved by technology

The defect of etching knife mold is that the highest knife height can only be about 2.0mm. In addition, in the large printing and electronic industries, roller molds are gradually put into use, and the production speed is doubled. However, due to the high price of roller molds, Good quality can only be imported from abroad

[0003] The blanking hole of the knife on the existing etching knife mold is straight-through shape, and the knife edge generally has a margin during processing, which is convenient to prolong the service life of the knife mold so that the diameter of the blanking hole is smaller than the diameter of the cut product , it is very easy to block the blanking hole, and the waste cannot be discharged in time, squeezing the die, affecting the product accuracy, and causing the die to deform and collapse in severe cases

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