Sewing machine's thread trimming mechanism

The utility model provides a sewing machine's thread trimming mechanism belongs to sewing machine technical field. It has solved the current unstable scheduling problem of thread trimming mechanism work. This sewing machine's thread trimming mechanism, sewing machine includes the base, be provided with down the axle in the base, lie in lower top fixedly connected with faller on the base, thread trimming mechanism include the blade relative set up move sword and stationary knife, epaxial cover is equipped with and moves the knife rest down, it fixes on moving the knife rest to move the sword, still be provided with the drive shaft in the base, fixedly connected with driving crank in the drive shaft, it articulatedly on the knife rest has an arbor connecting rod to move, driving crank is articulated mutually with the arbor connecting rod, stationary knife detachably fixes on the lower surface of faller, be provided with the gasket between faller and the stationary knife. This thread trimming mechanism has advan