Sewing machine stitch adjusting mechanism

• Main Author: ZHANG QIONGGUANG
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2022
• Subjects: EMBROIDERING; SEWING; TEXTILES; TUFTING

A stitch adjusting mechanism of a sewing machine comprises a stitch support, a stitch connecting rod, a needle rod swing frame and a needle rod, the needle rod is fixed on the needle rod swing frame, the needle rod swing frame is fixedly connected with one end of the stitch connecting rod, the stitch support is sequentially provided with a stitch shaft and a guide block shaft, the stitch shaft is provided with a stitch selecting cam and a stitch gear, and the stitch selecting cam is connected with the guide block shaft. The stitch selection cam comprises a stitch gear wheel part and a stitch swing limiting end face part, the stitch gear comprises a driving bevel gear part and a swing rod driving cam part, a stitch swing rod is arranged on the guide block shaft, and a convex part in contact with the stitch swing limiting end face part is arranged at the upper end of the stitch swing rod. The structure is simple and reliable, can meet different stitch paths and precision requirements, and is convenient to assem