The utility model discloses a high-speed dial linking
machine which comprises a lathe
bed, a support, a gear, a middle dial, a needle dial, a synchronous belt transmission structure, a thread
hooking structure and a stitch driving structure. The synchronous belt transmission structure comprises a driving shaft, a first auxiliary shaft, a second auxiliary shaft and a synchronous belt
assembly, wherein the driving shaft and the first auxiliary shaft are installed on the lathe
bed, and the second auxiliary shaft and the synchronous belt
assembly are installed on the support. The synchronous belt
assembly comprises a first synchronous belt
pulley, a second synchronous belt
pulley, a third synchronous belt
pulley, a fourth synchronous belt pulley, a first synchronous belt and a second synchronous belt; according to the
sewing machine, synchronous belt transmission is used for replacing traditional
bevel gear transmission,
noise of the
sewing machine is lowered, abrasion is reduced, the service life of the
sewing machine is longer, the space of a piece passing hole is increased, and sewing operation is more convenient.