公开(公告)号：US07347153B2

公开(公告)日：2008-03-25

申请号：US11601045

申请日：2006-11-17

申请人： Norio Nakata ,  Hiromichi Kurata ,  Takayoshi Masaoka

发明人： Norio Nakata ,  Hiromichi Kurata ,  Takayoshi Masaoka

IPC分类号： D05B47/00 ,  D65H57/00

CPC分类号： D05B45/00 ,  D05B49/04

摘要： A thread supplying device includes a rotator feeding a thread downstream of a thread supply path, the rotator winding a periphery thereof the thread several times and locating in the path extending from a thread supply part to a needle and loopers, a stepping motor continuously drivingly rotating in one way the rotator in synchronism with the main shaft of a sewing machine, thread feed setting means setting a unit thread feeding amount necessary for formation of seams per stitch, and control means automatically controlling the rotation of the motor to feed the unit thread feeding amount set by the setting means for each formation of seams per stitch. This device can stably supply a predetermined amount of the unit thread, and achieve stabilization of stitch performance, irrespective of the type of the thread, and whether the feed of a fabric increases or decreases by a rapid change in the rotational speed of the sewing machine.

摘要翻译： 螺纹供给装置包括旋转器，其向螺纹供给路径下游供给螺纹，旋转体多次卷绕螺纹的周缘，并且定位在从螺纹供给部延伸到针和套管的路径中，步进电动机连续地驱动旋转 以一种缝纫机主轴同步的旋转器，进给设定装置设定用于形成缝合所需的单位螺纹进给量，以及控制装置，自动控制马达的旋转以进给单元螺纹进给 通过设置装置设定的每个针迹每次形成接缝的量。 该装置可以稳定地提供预定量的单位线，并且不管线的类型如何，实现针迹性能的稳定化，以及织物的进给是否由于缝纫机的转速的快速变化而增加或减少 。