Flat knitting machine and stop motion thereof

The utility model relates to a flat knitting machine and stop motion thereof. This stop motion includes broken yarn detection piece and control circuit, the broken yarn detection piece includes electrically conductive of ground connection and the broken yarn detecting element who is used for supplying the yarn to pass, the electrically conductive ground connection of ground connection just is connected with the control circuit electricity, broken yarn detecting element has a plurality ofly, and electrically conductive of ground connection is close to a plurality of broken yarn detecting element and is set up, when having the broken yarn among arbitrary broken yarn detecting element, can be connected with electrically conductive electricity of ground connection after broken yarn shell fragment among the corresponding broken yarn detecting element is bounce, control circuit controls the flat knitting machine bring to rest. This flat knitting machine and stop motion thereof passes through electrically conductive of ground connection with all broken yarn detecting element and establishes ties together, as long as when wherein having a broken yarn detecting element to detect the broken yarn, control circuit just can shut down via electrically conductive whole flat knitting machine of control of this ground connection, and sensitivity is high, and the response is fast, avoids producing the cloth that has lacked one or many yarns, has guaranteed the quality of product, has reduced the rejection rate.