公开(公告)号：US06729251B2

公开(公告)日：2004-05-04

申请号：US10209715

申请日：2002-07-31

申请人： Masahiko Nishikawa ,  Osamu Doyasu ,  Hiroyuki Iuchi

发明人： Masahiko Nishikawa ,  Osamu Doyasu ,  Hiroyuki Iuchi

IPC分类号： D05B4900

CPC分类号： D05B49/02 ,  D05B1/10

摘要： A thread taking-up tool is attached to a needle bar sticking out of a sewing machine head, and its leading end has a plurality of thread holes. The thread holes of the thread taking-up tool are arranged in the lateral direction. A thread handling body has a cam face in the vertical direction. Needle threads from a tension device to needles are controlled by the vertical motion of the thread taking-up tool and the action of the cam face of the thread handling body. When the needles ascend from the lowest position, an endless hook attached to the thread taking-up tool is engaged with the left needle thread between the cam face lower end and the thread hole of the thread taking-up tool. Each thread is handled in with the left needle thread staying at the cam face lower end, so that the needle thread loop at the remotest end is absorbed surely.

摘要翻译： 在从缝纫机头部伸出的针杆上安装有一个螺纹拾取工具，其前端具有多个螺纹孔。 卷取工具的螺纹孔沿横向布置。 螺纹处理主体在垂直方向上具有凸轮面。 从张紧装置到针的针螺纹由螺纹卷取工具的垂直运动和螺纹处理体的凸轮面的作用控制。 当针从最低位置上升时，附着在上述卷取工具上的环形钩与左侧的针线接合在凸轮面下端与上述线取出工具的螺纹孔之间。 每个螺纹处于左侧针线处于凸轮面下端处，使得最远端的针线圈被可靠地吸收。

公开(公告)号：US06213039B1

公开(公告)日：2001-04-10

申请号：US09604653

申请日：2000-06-27

申请人： Toshio Kawahito ,  Hiroyuki Iuchi ,  Tatsuaki Kaneda

发明人： Toshio Kawahito ,  Hiroyuki Iuchi ,  Tatsuaki Kaneda

IPC分类号： D05B6936

CPC分类号： D05B51/00 ,  D05B57/02 ,  D05B69/36

摘要： An apparatus for detecting thread breakage in a sewing machine. The sewing machine comprises a looper reciprocating laterally across a leading end of a needle, a thread-controlling cam fixed on a rotary shaft interlocked with the reciprocal motion of the looper and varying in the extent of projection from the thread take-up stand along with rotation of the shaft, and thread guides disposed on the thread take-up stand at both sides of the thread-controlling cam. Said thread guides have thread eyelets for inserting the looper thread. Other thread guides having thread pass eyelets for inserting the looper thread are fixed and disposed on the looper thread route between the thread-controlling cam and the looper. A thread breakage-detecting member detects presence or absence of vibration of looper thread inserted in the thread pass eyelets of other thread guides between the other thread guides. A control circuit stops the sewing machine from driving on the basis of the detection of absence of thread vibration by this thread breakage-detecting member. In this constitution, breakage of looper thread while the sewing machine is being driven is securely detected, and the sewing machine is stopped immediately when the looper thread is broken, so that lowering of the sewing operation efficiency is effectively prevented.

摘要翻译： 一种用于检测缝纫机中断线的装置。 该缝纫机包括横穿穿过针头的前端的弯针，一个固定在旋转轴上的螺纹控制凸轮，与旋环的往复运动互锁，并且与卷取架的突出程度不同， 轴的旋转，以及设置在线卷取架上的线引导件在线控凸轮的两侧。 所述螺纹导向件具有用于插入弯针线的螺纹孔眼。 具有用于插入弯针线的螺纹孔眼的其它螺纹导向器固定并设置在线控制凸轮和弯针之间的弯针线路上。 线断线检测构件检测插入在其它导线器之间的其它导线器的螺纹孔眼中的弯针线的振动的存在或不存在。 基于该断线检测部件检测到不存在螺纹振动，控制电路使缝纫机停止行驶。 在该结构中，可以可靠地检测缝纫机被驱动时的弯针线的破损，并且当弯针线断裂时缝纫机立即停止，从而有效地防止缝纫操作效率的降低。