Needle pitch detection method and device, memory sewing control method and control system

Abstract

The invention discloses a needle pitch detection method and device, a memory sewing control method and a control system. The needle pitch detection method comprises the following steps of determiningthe rotation direction of an upper shaft and detecting an initial swing direction of a feeding shaft; and determining a sewing direction according to a relationship between the initial swing directionof the feeding shaft and the rotation direction of the upper shaft at the same moment, when the initial swing direction of the feeding shaft is opposite to the rotation direction of the upper shaft at the same moment, the sewing direction is forward sewing, otherwise, the sewing direction is reverse sewing. According to the needle pitch detection method provided by the invention, operation conditions of the upper shaft and the feeding shaft are determined through real-time detection to determine sewing direction parameters of the needle pitch, and by using parameter information, the information can be recorded and stored when sewing the sewing cloth for the first time; when the next same sewing cloth is sewn with the same sewing requirement, the stored information can be directly utilizedto directly determine the sewing direction, thus the sewing efficiency can be effectively improved, and the labor intensity of workers is reduced.

Description

technical field [0001] The invention relates to the technical field of sewing equipment, in particular to a needle distance detection method and device, a memory sewing control method and a control system. Background technique [0002] During the sewing process of the sewing machine, the needle pitch information specifically includes two aspects: the size of the stitch pitch and the advancing direction of the sewing cloth. Among them, the distance between two adjacent pinholes formed on the sewing cloth is a needle pitch, the length of the pinhole itself is regarded as 0, and the relative direction between the two pinholes is determined by the forward direction of the sewing cloth. The forward direction includes forward stitching and reverse stitching. [0003] In the process of sewing a piece of cloth, it is necessary to manually adjust the stitch distance related mechanical structure in real time according to the sewing demand, so that the stitch distance on the cloth can...

AI Technical Summary

Problems solved by technology

[0003] In the process of sewing a piece of cloth, it is necessary to manually adjust the stitch distance related mechanical structure in real time according to the sewing demand, so that the stitch distance on the cloth can meet the requirements. In this process, the existing sewing machine control system that controls the operation of the upper shaft It is impossible for the machine to directly obtain the stitch distance information in this segment of the sewing process. When the next same sewing cloth is sewn with the same sewing requirements, it is still necessary to manually adjust the stitch distance in real time according to the same sewing requirements, resulting in high sewing efficiency. Low, the labor intensity of the staff is high

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