Rear-cutter trimming device of sewing machine

A technology of sewing machine and cutting knife, which is applied in the sewing machine to cut off the thread mechanism, sewing machine components, sewing equipment, etc., which can solve the problems of unfavorable work efficiency and improvement, and achieve the effect of low cost

Inactive Publication Date: 2017-05-24
阮晨航
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the sewing machine sews a product, it is necessary to use scissors to cut the connecting line between the products; it is not conducive to the improvement of work efficiency; in addition, the technology of

Method used

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  • Rear-cutter trimming device of sewing machine
  • Rear-cutter trimming device of sewing machine
  • Rear-cutter trimming device of sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: the rear cutter thread trimming device of the sewing machine, a thread trimming step 22 is provided on the frame 1 at the rear part of the needle plate 4, and a fixed knife 14 is installed on the side wall of the thread trimming step 22, and the thread trimming step 1 The side frame is rotatably equipped with a tool bar 6, on which a moving knife 3 is installed, and the moving knife 3 is close to the fixed knife 14; the lower side of the frame is provided with a driving mechanism for driving the tool bar to rotate.

[0030] The thread trimming step 22 is provided on the needle plate 4 .

[0031] Described frame 1 is provided with a cross bar 5, and the frame of cross bar 5 rear ends is provided with driving mechanism, and driving mechanism drives described cross bar 5 to do lateral reciprocating motion, and the front end of cross bar 5 is provided with rack portion 25, and tooth The bar portion is engaged with the end teeth on the rear portion of the cutte...

Embodiment 2

[0037] Embodiment 2: This embodiment is basically the same as Embodiment 1, the difference is that a thread trimming groove 23 is designed on the needle plate.

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PUM

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Abstract

The invention belongs to the field of sewing machines and particularly relates to a rear-cutter trimming device of a sewing machine. The rear-cutter trimming device is characterized in that a trimming step or a trimming groove are formed in a rack at the rear portion of a needle plate, a fixed cutter is installed on the side wall of the trimming step or the trimming groove, a cutter bar is rotatably installed on one side of the trimming step or the trimming groove, a moving cutter is installed on the cutter bar, and the moving cutter is attached to the fixed cutter; a driving mechanism used for driving the cutter bar to rotate is arranged on the lower side of the rack. The trimming step or the trimming groove are formed in the rack, the fixed cutter is installed on the side wall of the trimming step or the trimming groove, the moving cutter is assembled on the rack, trimming is performed by cooperation of the moving cutter and the fixed cutter, the moving cutter is usually concealed at the lower portion of the rack, and no affect is caused to operation.

Description

technical field [0001] The invention belongs to the technical field of sewing machines, in particular to a rear cutter thread trimming device of a sewing machine. Background technique [0002] After the sewing machine sews a product, it is necessary to use scissors to cut the connecting line between the products; it is not conducive to the improvement of work efficiency; in addition, the technology of the sewing machine is very mature, and any new equipment added to the sewing machine frame needs to take into account the original No doubt, it will cause trouble for applicants to solve this problem. Contents of the invention [0003] The purpose of the present invention is to provide a rear cutter thread trimming device of a sewing machine with simple structure and stable performance. [0004] The purpose of the present invention is achieved like this: [0005] The rear cutter thread trimming device of the sewing machine has a thread trimming step or a thread trimming gro...

Claims

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Application Information

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IPC IPC(8): D05B65/00
CPCD05B65/00D05D2207/05D05D2209/08
Inventor 韩小辉
Owner 阮晨航
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