Wire feeding device of sewing machine

Abstract

The invention provides a wire feeding device of a sewing machine, which can simplify tedious operations of wearing sewing wires again during switching a hard stitch with a soft stitch. The wire feeding device (20) of the sewing machine (21) has a wire stirring and picking part (31), a first wire guide part (29), a second wire guide part (30) and a movable wire guide member (32). The wire stirring and picking part (31) having a wire feeding hole (34) at a swing front end side is arranged in a way that the wire stirring and picking part (31) can vertically swing surrounding a swing shaft (31a) which supports a swing base end side. The movable wire guide member (32) is formed independent of the wire stirring and picking part (31) and is arranged between the wire feeding hole (34) and the second wire guide part (30) to adjust positions vertically and horizontally.

Description

technical field [0001] The present invention relates to a thread feeding (Japanese: 系缲り) device of a sewing machine for facilitating picking out a thread to a sewing needle. Background technique [0002] In the past, as the thread feeding device of this sewing machine, for example, there are Figure 11 The thread feeding device 9 of the sewing machine 8 constituted as shown (for example, refer to Patent Document 1), it includes: a movable thread guide 1; The first thread-feeding hole 3 and the second thread-feeding hole 4 for sutures to pass through, and center on one end side to reciprocate and swing synchronously with the up and down movement of the needle bar 5 to control the amount of thread picking out; the needle bar thread take-up The part 7, which is fixed on the upper end of the needle bar 5, has a thread feeding hole 7a through which the suture can pass, and controls the amount of the suture to be pulled out. Wherein, the thread feeding device 9 of the sewing mach...

AI Technical Summary

Problems solved by technology

[0005] However, in the thread feeding device 9 of the above-mentioned sewing machine, when switching between harder stitches and softer stitches, it is necessary to reselect the first thread feeding hole 3 or the second thread feeding hole 3 that is integrally located at the swinging thread take-up member 6. Thread feed hole 4 and re-passing the suture through either of the two, therefore, presents an extremely cumbersome problem

[0006] In addition, in the case of soft stitches, the sutures have poor tightness and the tactile feel of the sewn products is not good

Having said that, if the thread clamp 11 is used to increase the thread sliding resistance in order to tighten the thread, there will be a problem that the thread is easily broken.

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