Hole opening cutter device for eyelet button hole sewing machine

Abstract

The invention discloses a hole opening cutter device for an eyelet button hole sewing machine. The middle part of a cutter lever is hinged to the inner wall of an upper shell of the eyelet button hole sewing machine, and the two ends of the cutter lever are hinged with a piston rod and a cutter fixing shaft of a multifold-force cylinder; a connecting seat is provided with first and second supporting arms which are perpendicular to each other; the right-angled part is hinged to the inner wall of a lower shell; the first supporting arm is hinged with the cylinder body of the multifold-force cylinder; the second supporting arm is hinged with a piston rod end of an auxiliary cylinder; the cylinder body of the auxiliary cylinder is provided with a sensor which is used for acquiring the end position of the piston rod; and a control unit is connected with a plurality of pressure air inlets on the multifold-force cylinder according to the position signal. In the invention, the position of themultifold-force cylinder is adjusted through the auxiliary cylinder, so that the speed of the hole opening cutter device for the eyelet button hole sewing machine is improved by over 70 percent, over60 percent of air of the cylinder is reduced, the life of the cutter is prolonged and the noise during the breakage of the material is reduced under the conditions that the strokes of the cuter and the shim, the diameter of the cylinder and the cutting force are not changed.

Description

technical field [0001] The invention relates to a round head buttonhole machine, in particular to a hole opening cutter device of the round head buttonhole machine. Background technique [0002] The round head buttonhole machine is mainly used for sewing buttonholes of all kinds of medium and thick materials such as knitting, cotton cloth, woolen cloth, etc. It is a special machine for sewing buttonholes with high production efficiency. The opening cutter device of the traditional buttonhole machine is driven by a multi-power cylinder. Because the length of the multi-power cylinder is too long and the stroke is too long, the inflation and exhaust time is too long, resulting in The cutter moves slowly, consumes a lot of air, consumes a lot of cutters, and resets slowly, so the work efficiency is low. Shortening the length of the cylinder is a solution to increase the moving speed of the cutter, but this cannot satisfy the normal stroke height between the cutter and the cutte...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the problem of low working efficiency of the opening cutter device of the buttonhole machine

Images