Operating Method of an Embroidering Machine

Abstract

The present invention relates to an operating method of an embroidering machine comprising a thread feeder, a needle working unit having a needle, a thread feeding unit forming a thread transferring path and having an upper thread feeder and a threader, a cut-thread sensor to sense whether the upper thread is cut, and a cutting unit to cut the upper thread, the operating method comprising controlling the cut-thread sensor to sense whether the upper thread is cut; stopping the needle working unit to operate; recovering the cut upper thread from the needle working unit; and driving the upper thread feeder to feed the needle working unit with a new upper thread to be threaded through the needle. Thus, it is possible to reduce time taken to feed a needle working unit with an upper thread when the upper thread is cut, thereby enhancing productivity and implementing an automation system thereof.

1 . An operating method of an embroidering machine comprising a thread feeder, a needle working unit having a needle threaded with an upper thread supplied from the thread feeder and performing a sewing operation, a thread feeding unit forming a predetermined thread transferring path from the thread feeder to the needle working unit and having an upper thread feeder to supply the upper thread and a threader to tread the needle with the upper thread, a cut-thread sensor to sense whether the upper thread transferred along the thread transferring path is cut, and a cutting unit to cut the upper thread on the thread transferring path, the operating method comprising:
 controlling the cut-thread sensor to sense whether the upper thread is cut;   stopping the needle working unit to operate;   recovering the cut upper thread from the needle working unit; and   driving the upper thread feeder to feed the needle working unit with a new upper thread to be threaded through the needle.   
   
   
       2 . The operating method according to  claim 1 , further comprising driving the cutting unit to cut the cut upper thread after stopping the needle working unit. 
   
   
       3 . The operating method according to  claim 1 , further comprising driving the needle working unit to make the needle perform a sewing operation after threading the needle with a new thread. 
   
   
       4 . The operating method according to  claim 2 , further comprising driving the needle working unit to make the needle perform a sewing operation after threading the needle with a new thread.