Idle loop sewing method and unit

Abstract

An idle loop sewing method and unit are suitable for an over-edge sewing machine for sewing clothes, e.g. cuffs, sleeves or armpits of knitted T-shirt, outer garments, underwears, or sewn male underwears. The idle loop suction tube sways in a direction opposite to the sewing direction in order to move at least a portion of the idle loop on the needle cluster part, which is drawn into the needle plate, in a direction opposite to the backward moving direction of the edge of a cloth, and is stitched together by a thread forming the thread line of the subsequent sewn cloth. Thus, the idle loop pulled into the stitching track of the needle lifting end of the cloth will not dislocate by accidental vigorous force to ensure that the idle loop can be stitched in and kept in the seam.

Description

technical field [0001] The present invention relates to an empty loop sewing method and an empty loop sewing device performed by an overlock sewing machine suitable for sewing cuffs and side seams of T-shirts, outerwear, underwear, etc., or side seams such as leggings and shorts , specifically relates to an empty loop sewing method and an empty loop sewing device for preventing the end of sewing from being off-thread by carrying out a kind of reinforcing seam commonly known as a reinforcement seam. This reinforcement seam is formed by The suction tube sucks and holds the remaining empty ring, and by swinging in the direction opposite to the sewing advance direction of the empty ring suction tube, the empty ring is stretched to the front side of the needle drop part and introduced into the sewing start end of the subsequent sewing material. In the seam, it is sewn in by an overlock sewing machine. Background technique [0002] As a hollow-loop sewing device implementing this...

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned hollow-loop sewing method of the conventional hollow-loop sewing device, since the loop A introduced into the seam S of the sewing start end We of the subsequent sewing material W is only pressed by the upper looper thread 1y, For example, when washing a sewn product sewn with slippery sewing material and suture thread, when a large force is applied to the sewing material W, the hollow ring A after the corner sewing is exposed from the seam S , We protrude from the sewing start end, which will damage the appearance image, or because of its prolapse, it is easy to reduce the original thread-off prevention function of the reinforcement seam

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