An automatic control method for reverse sewing of sewing machine

Abstract

The invention belongs to the technical field of sewing machines, and particularly discloses an automatic control method and control device for sewing machine reverse stitching. The automatic control method and control device solve the problem of how to automatically judge when to carry out reverse stitching, and achieves the purpose of sewing. The method comprises the following steps that (1), when the sewing starts, whether or not there is cloth is sensed by a sensor; then, a sewing operator sets stitch number of cloth advancing before sewing action of automatic reverse sewing is carried out according to a procedure, and after the cloth advances according to the set stitch number, the sewing action of automatic reverse sewing is carried out when the sewing starts; (2), the sewing action continues to be carried out; (3), when the sewing is implemented to the tail, whether or not the cloth moves out of the range of the sensor is sensed by the sensor again, and after the cloth is controlled to advance certain stitch number by a controller, the sewing action of the reverse sewing is carried out automatically. According to the automatic control method and control device for sewing machine reverse stitching, the sewing machine is controlled to automatically stop needles and carry out automatic reverse sewing by the controller in a sewing starting position and a cloth tail position, the purpose of full-automatic reverse sewing is achieved, and the sewing efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of sewing machines, in particular to an automatic control method for reverse sewing of sewing machines. Background technique [0002] At present, when fabrics are sewn in the sewing industry, reverse sewing is often performed at the beginning or at the end to prevent loose stitches and improve the sewing effect. The existing method of reverse sewing is: the sewing operator needs to visually observe when the fabric starts to sew and when it reaches the end, the two positions that need to be reversed, and then manually press the reverse sewing button to control The sewing machine performs the sewing action of reverse sewing. But a problem can be caused when the needle speed is too high when the sewing machine is sewing, that is, stopping the needle too early or too late will cause a waste of cloth, and this method of operation also reduces the sewing efficiency. Contents of the invention [0003] The prese...

AI Technical Summary

Problems solved by technology

However, when the needle speed of the sewing machine is too high during sewing, it will cause a problem, that is, stopping the needle too early or too late will cause waste of fabric, and this method of operation also reduces sewing efficiency

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