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31. 发明授权

US5159888A Automatic sewing machine capable of fast jump stitching 失效
标题翻译：自动缝纫机能够快速拼接
公开(公告)号：US5159888A
公开(公告)日：1992-11-03
申请号：US866361
申请日：1992-04-10
申请人： Tetsuo Morita
发明人： Tetsuo Morita
IPC分类号： D05B21/00 , D05B3/02 , D05B19/12 , D05C5/06
CPC分类号： D05B19/12 , D05B3/02
摘要： An automatic sewing machine having a needle-bar drive device for reciprocating a needle bar carrying a needle, a feed device for producing a relative movement between the needle bar and a work fabric, a feed control device for controlling the feed device according to stitch data indicative of needle positions, and a needle-bar jump device for disconnecting the needle bar from the needle-bar drive device and for holding the needle bar at a predetermined position above the fabric. The sewing machine is provided with a unique jump stitching arrangement operable, when the stitch length represented by a particular set of stitch data exceeds a maximum stitch length, for performing a jump stitching operation which includes: placing the feed control device in an inoperative state; placing the jump device and the feed device in operated states to produce a continuous relative movement of the needle bar and fabric; and restoring the feed control and jump devices to an operative state and a non-operated state, respectively, when a needle position represented by said particualr set of stitch data is reached by the continuous relative movement.
摘要翻译：一种自动缝纫机，具有用于使携带针的针杆往复运动的针杆驱动装置，用于在针杆和工作织物之间产生相对运动的进给装置，用于根据针数据控制进给装置的进给控制装置指针针位置，以及针杆跳转装置，用于将针杆与针杆驱动装置断开并将针杆保持在织物上方的预定位置。该缝纫机设置有独特的跳缝装置，当由特定的针数组合表示的针迹长度超过最大针迹长度时，用于执行跳跃拼接操作，包括：将进给控制装置置于不工作状态; 将跳跃装置和进给装置放置在操作状态以产生针杆和织物的连续相对运动; 并且当通过所述连续相对运动达到由所述特定的针数集合表示的针位置时，分别将进给控制和跳转装置恢复到操作状态和非操作状态。

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