Column sewing machine has coupling agents are arranged with switching unit in driving direction behind gear wheels, such that specific gear wheels are moved alternatively on the pushing wheel

摘要

#CMT# #/CMT# The sewing machine (1) has a rotary propelled pushing wheel (7) that is provided with power unit. A gear box and switching unit are arranged, such that pushing wheel is moved in two opposite directions. A first gear wheel, second gear wheel and third wheel are arranged in specific manner for changing rotation direction of pushing wheel by switching unit. The coupling agents are arranged with switching unit in driving direction behind gear wheels, such that second and third gear wheels are moved alternatively on the pushing wheel. #CMT#USE : #/CMT# Column sewing machine. #CMT#ADVANTAGE : #/CMT# The accurate positioning of needle between forward and backward movement of workpiece can be achieved. The shift operation in sewing machine can be performed quickly. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawings show the schematic and perspective views of the sewing machine. (Drawing includes non-English language text) 1 : Sewing machine 2 : Housing 3 : Base plate 7 : Pushing wheel 32 : Electromagnet.