Control method for automatic separation and resetting of needle rods of double-needle machine

Abstract

The invention provides a control method for automatic separation and resetting of needle rods of a double-needle machine. The method comprises that a stitch number N of single needle rod walking during corner sewing is preset in a control unit; during corner sewing, a turning button is pressed down, the control unit enables a driving mechanism to act to separate the two needle rods, one of the two needle rods is the working needle rod, and the other needle rod is the separated stopping needle rod; the working needle rod stops at the lower needle position after conducting single needle rod walking for N stitches; a pressing foot of the double-needle machine is lifted, and a sewing material is rotated; the pressing foot is placed down; a control switch is pressed down; the working needle rod conducts the single needle rod walking for N stitches again; and the control unit enables the driving mechanism to stop acting, and the two needle rods are reset under the action of a needle rod resetting assembly. By the aid of the control method, the semi-automation of the corner sewing is achieved, and particularly, the stitch numbers of single needle rod walking before and after rotation of the sewing material during the corner sewing are strictly consistent, so that the quality of the corner sewing is guaranteed, the reworking phenomena caused by the different stitch numbers can be eliminated, and the working efficiency is improved.

Description

technical field [0001] The invention relates to a control system of a double-needle machine, in particular to a control method for automatic separation and reset of needle bars of a double-needle machine. Background technique [0002] Double-needle machine is a sewing machine with two machine needles. The stitches it sew are two parallel and parallel sutures. Due to the high efficiency of double-needles and the parallel and beautiful appearance of double-needles, it is widely used. In the mass-produced garment industry. [0003] Double-needle machines all include a needle bar separation assembly and a needle bar reset assembly, which are used to realize the separation and reset of the double needle bars when sewing at bent angles. Specifically, during the corner sewing process, one needle bar of the double needle bar is first driven to separate by the needle bar separation assembly, and then the other needle bar single needle bar moves N1 needles, and then manually or autom...

AI Technical Summary

Problems solved by technology

At present, double-needle machine corner sewing is very difficult and difficult to grasp, and at present, the left needle bar or right needle bar can only be separated by manually pulling the switch; and the most difficult thing during corner sewing is to ensure the rotation The number of needles moved by the single needle bar before and after the material is strictly consistent, that is, N1=N2, even skilled workers often make mistakes, resulting in rework, time-consuming, laborious and low efficiency, resulting in unnecessary waste of resources

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