Sewing machine
A sewing machine and thread adjusting device technology, applied in sewing machine components, sewing equipment, program-controlled sewing machines, etc., can solve the problems of inability to form zigzag parallel parts, unevenness, and disordered stitches, and achieve smooth and stable tension changes. Effect
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[0064] Below, combine Figure 1 to Figure 8 , the embodiment of the present invention will be described.
[0065] The sewing machine 100 of the present embodiment is an example of a buttonhole sewing machine in which the present invention is applied to form buttonhole stitches for buttonholes on a sewn object.
[0066] Such as figure 1 , figure 2 As shown, the sewing machine 100 has: a sewing machine motor 13 as a sewing machine drive source, a sewing machine start pedal 17 that drives the sewing machine motor 13 to rotate, a needle bar 130 that moves up and down as the sewing machine motor 13 is driven by rotation, and is fixed on Machine needle 131 on needle bar 130. In addition, the sewing machine 100 has a first thread adjusting device 1, a second thread adjusting device 2, a take-up thread arrangement, and a first thread adjusting device 1, a second thread adjusting device 2, and a thread adjusting device 1 arranged on the upper thread path R along which the upper th...
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