Sewing Machine

Abstract

The present invention relates to a sewing machine with a thread supplying unit for supplying a thread to a needle working unit, the sewing machine, comprising a cutting unit comprising a cutter to cut the thread, and a cutter supporter to support the cutter, and cutting the thread transferred from the thread supplying unit to the needle working unit along a thread transferring path; and a cutting driver driving the cutting unit to cut the thread on the thread transferring path by the cutter. Thus, the present invention provides a sewing machine, in which a thread snapped during an embroidering work is automatically cut, thereby enhancing work efficiency.

1 . A sewing machine with a thread supplying unit for supplying a thread to a needle working unit, the sewing machine, comprising: 
 a cutting unit comprising a cutter to cut the thread, and a cutter supporter to support the cutter, and cutting the thread transferred from the thread supplying unit to the needle working unit along a thread transferring path; and    a cutting driver driving the cutting unit to cut the thread on the thread transferring path by the cutter.    
   
   
       2 . The sewing machine according to  claim 1 , further comprising a thread standby length adjuster provided between a bobbin and the thread supplying unit, and returning the cut thread to the thread supplying unit for transferring the cut thread from the bobbin to the needle working unit.  
   
   
       3 . The sewing machine according to  claim 1 , wherein the cutting driver comprises: 
 a supporting shaft supporting the cutter supporter; and    a driving unit connected to the supporting shaft, and driving the cutter to contact and be spaced apart from the thread and to cut the thread on the thread transferring path.    
   
   
       4 . The sewing machine according to  claim 3 , wherein the cutting driver comprises: 
 a guide movably coupled to the supporting shaft, guiding the thread on the thread transferring path to a predetermined cutting position, and formed with a cutter through portion through which the cutter passes; and    an elastic member provided between the cutter supporter and the guide, and elastically urging the cutter supporter to be spaced from the guide at a predetermined distance,    wherein the driving unit drives the guide to guide the thread on the thread transferring path to the cutting position.    
   
   
       5 . The sewing machine according to  claim 4 , wherein the guide comprises a magnet.  
   
   
       6 . The sewing machine according to  claim 2 , wherein the thread standby length adjuster comprises: 
 a thread standby length adjusting body comprising a thread guiding unit to guide the cut thread wound on the bobbin to be transferred from the bobbin to the thread supplying unit, and a plurality of thread accommodating units communicating with the thread guiding unit and formed with an accommodating space to accommodate the cut thread on standby;    a thread standby length adjusting bar provided movably along the thread accommodating unit, and returning a cut end of the thread to the thread supplying unit by transferring the cut thread directing to the bobbin from a working state in the thread guiding unit to a standby state.    
   
   
       7 . The sewing machine according to  claim 6 , wherein the thread standby length adjuster further comprises a thread transferring interceptor provided between the bobbin and the thread standby length adjusting body, and intercepting the thread transferred from the bobbin to the thread standby length adjusting body.