Enciphered seam adjusting structure of sewing machine

Abstract

The invention provides an enciphered seam adjusting structure of a sewing machine and belongs to the technical field of clothing manufacturing equipment. The structure solves the technical problems that the enciphered seam adjusting structure of a prior sewing machine is not accurate enough and the like. The enciphered seam adjusting structure comprises a shell, a cloth feeding rack, cloth feedingteeth, a differential tooth rack and differential teeth, wherein the enciphered seam adjusting structure comprises a lower front shaft and a differential shaft which are connected with the differential tooth rack and the cloth feeding rack; the enciphered seam adjusting structure also comprises a driving motor arranged in the shell; an output shaft of the driving motor is connected with a connecting rod pin through a swinging rod assembly; the lower front shaft is connected with the connecting rod pin through an eccentric connecting rod; and the differential shaft is connected with the connecting rod pin through a connecting crank and a crank connecting rod. According to the invention, the number of the enciphered stitches and the distances between the enciphered stitches are accurately controlled through the driving motor, and manual adjustment of mechanical parts is not needed, so that the operation requirement of a user is greatly reduced; and moreover, the speed response is high,the adjustment is convenient, the control is efficient and reliable, and the automation degree is high.

Description

technical field [0001] The invention belongs to the technical field of garment manufacturing equipment, and relates to a dense seam adjustment structure of 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. The sewing machine can sew fabrics such as cotton, fiber crops, silk, wool, and artificial fibers, and products such as leather, plastics, and paper. At present, when the sewing machines on the market are finished sewing, because the needle pitch cannot be adjusted, the thread ends of the bottom thread and the upper thread cannot form effective self-locking, and they are easy to fall off when pulled, and when the thread is trimmed after sewing, the thread ends left on the sewing material will be broken. One long and one short will affect the aesthetics of the stitches. For example, in interlock se...

AI Technical Summary

Problems solved by technology

[0004] In the above patent documents, electromagnets are used to drive and adjust the dense sewing device, but the action of the electromagnet is not easy to control, the number of encrypted stitches cannot be accurately controlled, and the operation is not convenient enough.

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