Bridle wire apparatus of chain-seam sewing machine

Abstract

The invention provides a jumper device of chain sewing machine; the operator is able to implement jumper according to the need and simultaneously does not limit the design of the sewing machine. A jumper device (40) of the chain sewing machine (10) sewn by at least two or more sewing needles has a plurality of looping devices (15) which catch wire loop of suture T of the sewing needle moving up and down by using swing part by the tip so as to insert the looping wire L; and a plurality of heaves (31) of a wire grip (30) which catch the looping wire L from the tip of each looping device (15) and implement looping forming; wherein, at least front end of each heave (31) rotates through the jumper device (40) to withdraw to the position not catching the looping wire L.

Description

technical field [0001] The invention relates to a jumper device of a chain seam sewing machine. Background technique [0002] Chainstitch sewing machines such as Figure 7 As shown, there are: a sewing needle 101, which moves up and down; a looper 103, which makes the looping thread L pass through the loop of the suture T passing through the sewing needle 101 by making the tip 102 swing along the cloth feeding direction and a thread puller 104, which captures the looping thread L to form a thread loop through which the sewing needle 101 passes. [0003] According to this structure, the advanced looper 103 catches the suture T by its tip 102 from the sewing needle 101 descending through the cloth, and the thread puller 104 catches the looper 103 inserted into the loop of the suture T. The looping thread L forms a thread loop, and the sewing needle 101 that descends again enters the thread loop of the looping thread L. By repeating the above actions, the suture T and the loop...

AI Technical Summary

Problems solved by technology

[0007] Here, for the sewing section D, if the end of the fabric is tucked inside in advance and sewing is carried out from above, the sewing in the tucked state can be completed, but for the tucked section B, In other words, since the trial sewing section A exists adjacently, the end cannot be tucked in before the section A is cut off.

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