Non-shuttle peg base line supplying device

Abstract

A shuttle-core-free bobbin thread feeder comprises a shuttle rotating mechanism installed on one end of a shuttle rotating shaft and a vertical shaft perpendicularly crossed with the shuttle rotating mechanism. An axial through hole for guiding threads is arranged on the axis of the shuttle rotating shaft which extends and surpasses the cross point of the shuttle rotating shaft and the vertical shaft. A tension cam is installed on the other end of the shuttle rotating shaft and is located on the path of the threads, with the shuttle rotating shaft as the spin axis. The lower end of the vertical shaft is connected with the shuttle rotating shaft through a bevel gear pair. The upper end of an oil pump shaft is connected with the shuttle rotating shaft through the bevel gear pair. The bobbin thread feeder has the advantages that the bobbin thread accords with the thread feeding speed of the working part of a sewing machine, and the threads have small tension changes; thread feeding operation is smooth; and the stitches of the bobbin threads are even, nice-looking in appearance and low in breakage rate.

Description

(1) Technical field [0001] The invention relates to a bobbin thread supply device for a sewing machine. (2) Technical background [0002] Existing industrial sewing machines and embroidery machines and other rotary-hook sewing equipment, the bobbin thread supply devices all adopt the structure of bobbin winding and rotary hook thread hooking. Since the bobbin is small and the amount of winding is small, it needs to be replaced frequently during the working process. Bobbins, the sewing process is frequently interrupted, which greatly reduces work efficiency and increases labor costs. Labor cost is the main cost of garment factories, so this defect is very unfavorable to the cost control of garment processing industry. In addition, there are many thread joints, which affect the appearance of the finished product. The thread joints on high-end clothing seriously affect the quality grade. The stitches of leather clothing, denim clothes and other clothing are thicker, and the th...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that the bobbinless bobbin thread supply device of the existing sewing machine is not suitable for the thread feeding rhythm of the working part of the sewing machine, and provides a bobbinless bobbin thread supplying device that adapts to the thread feeding rhythm of the working part of the sewing machine

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