Corner sewing method of two-needle sewing machine

Abstract

The invention relates to the technical field of two-needle machines and especially relates to a corner sewing method of a two-needle sewing machine. The method comprises the steps that (1) the degree number beta of a corner and a turning direction of a thread track are input in an operation interface when turning is needed during sewing; (2) a control unit computes a walking length D of a walking needle rod; (3) a starting instruction is input, the control unit makes the two needle rods separated automatically, the separated needle rod stops working, the working needle rod keeps on walking for the length D, and then the machine needle is paused, and a press foot is lifted; (4) a sewing fabric is rotated by the angle beta with the working needle rod as the center, the staring instruction is input, the press foot moves downwards and presses the fabric, and the working needle rod keeps on walking for the length D; and (5) the control unit resets the two needle rods, and the needle spacing is automatically recovered to D1. According to the invention, the walking length D of the working needle rod as well as the walking needle spacing D2 and the needle number X within the walking length D of the walking needle rod can be computed automatically according to a current needle spacing D1 and a turning angle, so corner turning becomes more flexible and the method has market application prospect.

Description

technical field [0001] The technical field of double-needle sewing machines of the present invention particularly refers to a corner sewing method of a double-needle sewing 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] At present, the curved corner sewing of double-needle machines is very difficult and difficult to master, and the left needle bar or the right needle bar can only be separated by manually pulling the switch; and the most difficult thing during the curved corner sewing is to ensure the rotation of the sewing material before and after The number of needles moved by a single needle bar is strictly consistent, and even skilled workers often make mistakes, resulting in rework,...

AI Technical Summary

Problems solved by technology

Moreover, the needle distance D1 cannot be adjusted arbitrarily according to the needs of users

The market application of this method is extremely limited

Images