| 摘要 |
PURPOSE: A feeder of bottom yarn on a sewing machine is characterized by not needing to change a spool of the bottom yarn. Therefore, the feeder of the bottom yarn is capable of working continuously and increasing productivity. CONSTITUTION: The feeder of the bottom yarn on the sewing machine is comprised of: a main body(100) which is installed on a side of the sewing machine, having L-shape rear part; (a leading part of the bottom yarn, 110) a first leading tool, a second leading tool, a third leading tool(111,112,113) and a first guiding groove(114) installed on a rotating plate(116); the rotating plate(116) installed on an end of the main body(100) with a leading shaft(115) and set parallel with the main body(100); (a tension regulating part, 120) a tension bracket(124) installed on the main body(100); a fourth leading tool(121) and a protrusion part(125) installed on the tension bracket(124); a second guiding groove(122) installed on the tension bracket(124); a tension regulating button(123) installed parallel with the second guiding groove(122); (a lubricating part, 130) a bottom yarn leading tool(133) which is installed on both sides of a lubricating bracket(132), leading the bottom yarn(10); an oiling part(131) which is installed on an upper part of an oil box(135), oiling the bottom yarns(10); (a direction converting part, 140) a fifth leading tool, a sixth leading tool(141,142) and a third guiding groove(143) installed on a direction converting plate(145); the direction converting plate(145) installed on a bent-up part of the main body(100) with a direction converting shaft(144) and set parallel with the bent-up part; and (a bottom yarn transferring part, 150) a bottom yarn transferring pipe(152) and a holding shaft(151) of the pipe.
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