An overlock sewing machine with an automatic thread trimmer

Abstract

The invention discloses an overlock machine with an automatic thread head cutting function. The overlock machine comprises a machine head base and a worktable, the worktable is located below the machine head base, and an overlock mechanism is arranged at the bottom of the machine head base; a thread cutting mechanism used for automatically cutting threads is arranged in the worktable, and the overlock mechanism comprises a first connecting rod, a fixing base, a needle and a second connecting rod; the first connecting rod and the second connecting rod are movably mounted with the machine head base, the fixing base is fixedly installed at the bottom of the first connecting rod, and a pressing piece is movably installed at the bottom of the fixing base; the thread cutting mechanism comprisesa rotary plate, a cylinder sleeve, a first rotating rod, a sliding block, a sliding groove, a fixing rod, a fixing block and a blade; the worktable is provided with two placement grooves and a placement hole, and one placement groove is formed in the top of the worktable. The overlock machine is reasonable in designed structure and easy to operate; thread ends are quickly and conveniently cut through cooperation between structures, and the sewing time is shortened; due to the design of a machine head, the stability of cloth sewing feeding can be achieved, and the overlock quality is better.

Description

technical field [0001] The invention relates to the technical field of overlock sewing machines, in particular to an overlock sewing machine with an automatic thread trimmer. Background technique [0002] Overlock sewing machine is also called side car, edge machine, and bone car, generally divided into three threads, four threads, and five threads. The main function is generally to prevent the seam of the garment from fluffing. The overlock sewing machine can be used not only for hemming, but also for sewing T-shirts, sportswear, underwear, knitting and other fabrics. Overlock sewing machine can cut and sew at the same time, the stitches are like mesh, and it is also suitable for elastic fabrics. The existing overlock machine head has the following three technical defects: [0003] 1. The existing overlock sewing machine does not have a good thread trimming mechanism. After a sewing process is completed, it is necessary to cut the thread between the clothes and the overl...

AI Technical Summary

Problems solved by technology

[0005] 3. The head of the traditional overlock sewing machine does not have a good cloth feeding device. It only feeds the cloth through the cooperation of the feed rack and the pressing piece installed on the workbench. Because the cloth is soft and easy to wrinkle and deform, so the It is easy to cause the hemming to be twisted, so a mechanism to make the cloth feed more smoothly is needed

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