Thread trimming mechanism of sewing machine and sewing machine

Abstract

The invention discloses a thread trimming mechanism of a sewing machine and the sewing machine. The sewing machine comprises a rotating shuttle and a sleeve pipe, wherein the rotating shuttle is arranged at the axial end of the sleeve pipe. The thread trimming mechanism comprises a mounting base, a first cutter part, a sliding block, a cutter holder and a second cutter part, wherein a mounting hole is formed in the mounting base; the sleeve pipe is suitable for being rotatably arranged in the mounting hole in a penetrating mode; the first cutter part is connected with the mounting base; the sliding block is mounted on the mounting base and can slide relative to the mounting base; the sliding block is suitable for being connected with the sleeve pipe; the sleeve pipe rotates to drive the sliding block to slide; the cutter holder is mounted on the mounting base and can swing relative to the mounting base; the cutter holder is connected with the sliding block; the sliding block slides to drive the cutter holder to swing; the second cutter part is detachably mounted on the cutter holder; and the second cutter part can swing along with the cutter holder to abut against the first cutter part to conduct thread trimming. The working process is simple and convenient to achieve. According to the thread trimming mechanism, the sliding block is driven to slide through rotation of the sleeve pipe, so that the control cost is reduced; and the mutual cooperation of the thread trimming action of the thread trimming mechanism and the action of the rotating shuttle can be achieved, so that effective thread trimming is achieved.

Description

technical field [0001] The invention relates to the field of sewing machines, in particular to a thread cutting mechanism of the sewing machine and the sewing machine. Background technique [0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material. The sewing machine can sew fabrics such as cotton, fiber crops, silk, wool, and artificial fibers, and products such as leather, plastics, and paper. The sewing machine is generally composed of four parts: the feeding device, the machine base, the transmission and the accessories. Through the reasonable cooperation of the movements of each mechanism, the cycle works to sew the sewing materials together. Automatic thread cutting. The thread trimming mechanism in the prior art has a poor thread trimming effect, and the thread end after thread trimming is relatively long, and generally requires secondary p...

AI Technical Summary

Problems solved by technology

The thread-cutting mechanism in the prior art has a poor thread-cutting effect, and the thread end after thread-cutting is long, and generally requires secondary processing, which has poor efficiency and has room for improvement.

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