HIGH SPEED DIRECT DRIVE COMPUTER CONTROLLED LOCKSTITCH BUTTON HOLING  SEWING MACHINE 
 
Cloth feeding mechanism : the needle bar sewing mechanism adopts a step motor, decomposition capacity up to 0.05 mm, so that the sewing stitch stable appearance. Through the operation panel on the front of one speed setting, achieve the slow start function, which can effectively prevent the machine high speed star tup disconnection phenomenon. the electric control can sewing last needle when the rein forcing slot, to prevent the button hole. Based on the wire line clam per tension adjustment, can realize the button hole in  parallel and sleeve joint part of the tension different needs.