TRANSMISSION MECHANISM FOR THREE NEEDLE SEWING MACHINE OF LONGITUDINAL TYPE CYLINDER BED

摘要

The present invention relates to a design of a transmission mechanism of a vertical cylinder bed three-needle sewing machine, which transmits the output power of the main shaft of the sewing machine to the cantilever front end of the sewing machine through a driven shaft equipped with two eccentric wheels, two swing arm sets, and one horizontal shaft arrangement. By driving the upper decorative yarn shaft and the needle rod driving shaft installed in each of the front end of the cantilever, so that the interaction action occurs to each other, it prevents the bed of the sewing machine from vibrating, thereby making stable sewing operation, which is advantageous for sewing work operated at high speed. The electric mechanism was able to adjust the operating stroke of the needle rod drive shaft in a timely manner according to the sewing material thickness.