Thread trimming mechanism of sewing machine

A thread trimming mechanism and sewing machine technology, which are applied to the thread cutting mechanism in sewing machines, sewing machine components, sewing machine control devices, etc. Stable and precise control of the trimming position and the effect of short thread trimming

Inactive Publication Date: 2017-08-11
ZHEJIANG MAQI SEWING MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The stitches of the sewing machine are mainly formed by the movement of the needle and the hook. In order to prevent the suture from touching the edge of the knife in the sewing state, the moving knife and the fixed knife must avoid the range of motion of the moving parts, and the fixed knife is fixed on the needle. On one side, there is a certain distance between the fixed knife and the machine needle, which leads to a certain distance between the overlapping and engagi...

Method used

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  • Thread trimming mechanism of sewing machine
  • Thread trimming mechanism of sewing machine
  • Thread trimming mechanism of sewing machine

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. As used herein, "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and t...

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PUM

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Abstract

The invention discloses a thread trimming mechanism of a sewing machine. The thread trimming mechanism comprises a thread trimming driving shaft. The thread trimming driving shaft is fixedly connected with a thread trimming crank. The thread trimming crank is hinged to one end of a main moving cutter connecting rod. The other end of the main moving cutter connecting rod is hinged to a main moving cutter set. Main moving cutters are arranged on the main moving cutter set. The thread trimming driving shaft is connected with the middle section of an auxiliary moving cutter swinging rod, the other end of the auxiliary moving cutter swinging rod is fixedly connected with the thread trimming crank, the other end of the auxiliary moving cutter swinging rod is hinged to one end of an auxiliary moving cutter connecting rod, and the other end of the auxiliary moving cutter connecting rod is hinged to an auxiliary moving cutter set; auxiliary moving cutters are arranged on the auxiliary moving cutter set. The thread trimming driving shaft swings to drive linkage of a connecting rod mechanism, so that engagement of the main moving cutters and the auxiliary moving cutters, and the purpose of thread trimming is achieved.

Description

technical field [0001] The invention relates to an accessory of a sewing machine, in particular to a thread trimming mechanism of the sewing machine. Background technique [0002] The thread trimming mechanism of existing sewing machine generally all is made up of fixed knife, moving knife, connecting rod and drive shaft, and fixed knife is fixedly installed on the casing; Drive the moving knife holder to make the moving knife move towards the fixed knife to achieve the purpose of closing the thread trimmer. [0003] The stitches of the sewing machine are mainly formed by the movement of the needle and the hook. In order to prevent the suture from touching the edge of the knife in the sewing state, the moving knife and the fixed knife must avoid the range of motion of the moving parts, and the fixed knife is fixed on the needle. On one side, there is a certain distance between the fixed knife and the machine needle, which leads to a certain distance between the overlapping ...

Claims

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Application Information

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IPC IPC(8): D05B65/00D05B69/02
CPCD05B65/00D05B69/02
Inventor 何清范有金叶海波
Owner ZHEJIANG MAQI SEWING MACHINE
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