Sewing machine thread trimming mechanism

Abstract

The invention discloses a sewing machine thread trimming mechanism which comprises a mounting block, a placing block, a rotating block and thread shear bodies. An embedding groove is formed in the bottom end of the mounting block, an embedding block is embedded into the embedding groove, a sliding groove is formed in the mounting block, a pulley is slidably arranged in the sliding groove, a secondrotating shaft is arranged in the middle of the pulley, the rotating block is mounted at the top end of the second rotating shaft, the placing block is mounted on one side of the rotating block, a placing groove is formed in the placing block, inserting blocks are arranged on two sides of the placing groove, poking strips are mounted at the top ends of the inserting blocks, the inserting blocks are rotatably mounted in the placing groove through first rotating shafts, and the thread shear bodies are inserted into the inserting blocks. The thread trimming mechanism is provided with a containing, sliding and trimming device, a traditional thread shear is placed in a rotatable containing groove and cannot be lost when not being used and fixedly mounted on one side of a sewing needle when being used, a sewing thread is sheared off by the aid of the thread shear in a steering and sliding manner, and the trimming mechanism is rapid in speed and high in efficiency.

Description

technical field [0001] The invention relates to the technical field of sewing machines, in particular to a sewing machine thread trimming mechanism. 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. And it derived art forms such as hand-push embroidery and computer embroidery. Existing sewing machines need to cut the thread at the needle head after sewing clothes and other fabrics. Generally, thread scissors are used to cut it, but it is easy to lose it, and it needs to be cut once every time the sewing machine sews the clothes. Multiple cuts waste time and reduce efficiency. [0003] In order to solve these problems, people have invented a sewing machine thread trimmi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thread trimming mechanism for sewing machines, which has the advantages of convenient cutting and storage to reduce the loss rate, and solves the problem of slow speed and low efficiency in the previous method of cutting with manual hand-held thread scissors

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