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Sewing machine's thread cutting mechanism

A sewing machine and thread cutting technology, which is applied in the sewing machine to cut off the thread mechanism, sewing machine components, sewing equipment, etc., to achieve the effect of simple and convenient assembly and maintenance, and convenient adjustment and maintenance

Inactive Publication Date: 2019-09-17
吴谨明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the purposes of the present invention is to solve the above-mentioned problems of the prior art sewing machine, and provide a sewing machine thread trimming mechanism that is simple in structure, easy to maintain and adjust

Method used

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  • Sewing machine's thread cutting mechanism
  • Sewing machine's thread cutting mechanism
  • Sewing machine's thread cutting mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] The positional relationships described in the following embodiments include: up, down, left and right. Unless otherwise specified, they are all based on the directions in which the components are drawn in the drawings.

[0052] see image 3 , is a structural diagram of an embodiment of the thread cutting mechanism of the sewing machine of the present invention, showing the structure of the thread cutting mechanism and other related mechanisms.

[0053] The thread cutting mechanism proposed by the present invention is installed on the rotary hook cylinder 20 and is located under the needle plate 30. The rotary hook cylinder 20 is basically equipped with a rotary hook 21 and a rotary hook transmission shaft 22 for driving the rotary hook 21 to rotate. A second gear 23 is installed on the bottom end of the power transmission shaft 22, and the second gear 23 can engage with a first gear mesh 25 installed on a main shaft 24, and the main shaft 24 is driven by a power unit (g...

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PUM

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Abstract

The utility model provides a sewing machine's thread cutting mechanism, include: a dead knife, a line ball board and an activity sword, dead knife and line ball board fixed mounting install the top surface at the rotating shuttle column casing at a fixed cutter seat, fixed cutter seat, and fixing cutter has a fixed blade portion, line ball board fixed mounting has a tongue piece at the below of dead knife, line ball board, the activity sword contains and combines to become integrative movable blade holder and cutting board, activity blade holder fixed mounting hollow shaft outside, outer hollow shaft rotationally overlaps in the outside of rotating shuttle transmission shaft and can the reciprocating rotation, the cutting board has towards a first surface of line ball board, the first surface has a wire ditch, the front end of wire ditch has an opening and is used for direcing the suture by opening entering wire ditch, the end and first surface linking department of wire ditch have a mobile blade portion, the cutting board of outer hollow shaft drive activity sword is in the outside of rotating shuttle round rotating shuttle reciprocal rotation between a ready position and a tangent line position.

Description

technical field [0001] The invention relates to a thread cutting mechanism of a sewing machine, in particular to a thread cutting mechanism which has a shorter thread end after cutting the suture, and has the advantages of simple structure, easy maintenance and adjustment. Background technique [0002] There are many kinds of known sewing machines, which can be applied to the sewing of different sewing objects. One of them is a special sewing machine suitable for sewing shoes, bags or cylinders, which is generally called the cylinder type. sewing machine. [0003] In the Chinese utility model patent (authorized announcement number: CN2705480Y) that has been authorized and announced, a cylindrical sewing machine offline holding device is proposed, which includes: a movable knife, which is fixed on the mounting block installed on the base with screws, And it can rotate freely around its axis, and a curved blade is formed at its end; a fixed knife is installed on the vertical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B65/00
CPCD05B65/00
Inventor 吴谨明
Owner 吴谨明