Stretched-thread traction mechanism of four-needle six-thread splicing and sewing machine

The invention provides a stretched-thread traction mechanism of a four-needle six-thread splicing and sewing machine, which belongs to the technical field of sewing machines and solves the problems of small space of a traditional four-needle six-thread splicing and sewing machine and large stretched-needle swinging amplitude of a traditional flat-seaming mechanism. The stretched-thread traction mechanism of the four-needle six-thread splicing and sewing machine is arranged on a presser foot and comprises a crochet hook, a stretched-thread supporting frame and a fan-shaped sheet, the fan-shaped sheet is coupled on the presser foot, a first rotating shaft and a second rotating shaft are also arranged on the presser foot, the lower end of the first rotating shaft is fixedly connected with the crochet hook, the lower end of the second rotating shaft is fixedly connected with the stretched-thread supporting frame, and a link mechanism capable of driving the crochet hook and the stretched-thread supporting frame to