Efficient and stable roller car for back stitching

Abstract

The invention discloses a roller car capable of efficient and stable reverse stitching, which comprises a machine head and a middle seat structure. The machine head includes a machine head shell, a first electromagnet, a first magnetic steel shaft and a second A one-way bearing rotation mechanism, the middle seat structure includes a bottom plate, a middle seat arranged on the bottom plate, a gear transmission mechanism arranged on the middle seat and a second one-way bearing rotation mechanism connected to the gear transmission mechanism, the first electromagnet It is connected with the first one-way bearing rotating mechanism through an eccentric shaft structure, and the second one-way bearing rotating mechanism includes the second one-way bearing shaft and bearing fixing seat. The second connecting rod and the second electromagnet that promote the swing of the Bearing fixed seat. The present invention can carry out stable reverse sewing on thicker and harder sewing materials such as leather, which reduces the labor intensity of workers, improves sewing efficiency, and reduces sewing costs; at the same time, the cloth feeding is safer and more reliable, making the sewing smooth and smooth. Beautiful trace; suitable for leather sewing materials of various thicknesses.

Description

technical field [0001] The invention relates to a sewing machine, in particular to a roller car capable of efficient and stable reverse sewing. Background technique [0002] As one of the main sewing tools for sewing footwear, the roller cart has been continuously developed and improved; however, in the process of sewing thicker and harder sewing materials such as leather, ordinary roller carts often fail due to the problem of feeding wheels for reverse sewing. Reverse sewing cannot be realized, only one-way sewing is possible, and one side needs to be changed manually before sewing, which increases the labor intensity of workers, reduces sewing efficiency, and increases sewing cost; [0003] Moreover, in the roller car with reverse stitching function, the presser foot gear at the machine head needs to use a special clutch mechanism to control its disengagement or engagement, so as to facilitate its smooth cooperation with the cloth presser wheel. Contents of the invention...

AI Technical Summary

Problems solved by technology

[0002] As one of the main sewing tools for sewing footwear, the roller cart has been continuously developed and improved; however, in the process of sewing thicker and harder sewing materials such as leather, ordinary roller carts often fail due to the problem of feeding wheels for reverse sewing. Reverse sewing cannot be realized, only one-way sewing is possible, and one side needs to be changed manually before sewing, which increases the labor intensity of workers, reduces sewing efficiency, and increases sewing cost;

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