Reverse stitch control method, reverse stitch control system and sewing machine

Abstract

The invention discloses a reverse sewing control method, a reverse sewing control system and a sewing machine. The method includes: Step S1: Acquiring the first time period spent by the oscillating plate base to move from the initial position with the initial acceleration to the zero stitch position, and performing Step S2; Step S2: Judging whether the first time period is greater than the preset time length threshold, If so, execute step S3; step S3: adjust the pulling force of the back-tacking electromagnet so that the swing plate base decelerates in the original direction for a second duration, and perform step S4, wherein the back-stitching electromagnet is connected to the swing plate base; step S4: control the swing The plate seat continues to move to the end position according to the original direction, and the acceleration during the movement is not greater than the initial acceleration. This method determines the actual stitch length of the swing plate base by monitoring the movement time of the swing plate base. Compared with the prior art, the generated noise can be reduced.

Description

technical field [0001] The invention relates to the technical field of back stitching, in particular to a back stitching control method, a back stitching control system and a sewing machine. Background technique [0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material. Sewing machines are generally composed of four parts: feeding device, machine base, transmission and accessories. The movement of each mechanism is reasonably coordinated, and the cycle works to sew the sewing materials together. [0003] In the back stitching electromagnet structure of the existing lockstitch machine in the back stitching process, after the back stitching electromagnet is energized, the swing plate seat is pulled by the existing transmission mechanism to move from the positive stitch distance stop point to the negative stitch distance until the feed regulator and ...

AI Technical Summary

Problems solved by technology

However, when the final speed of the feed regulator moves to a negative stitch distance, the feed regulator collides violently with the dial stud, which will generate a louder noise, and the greater the impact speed, the louder the sound, especially in short stitches. In garment factories with many stitching processes, the noise of reverse stitching is particularly prominent

On the one hand, this will generate greater noise pollution, and on the other hand, due to greater collisions, it will have a negative impact on the life of some parts

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