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Improved string cutter for sewing machine

A sewing machine and thread cutting technology, which is applied to sewing equipment, sewing machine components, and thread cutting mechanisms in sewing machines, etc., can solve problems such as affecting hook rods and cutting, inability to effectively fine-tune the position or swing amplitude, and great frustration.

Inactive Publication Date: 2004-10-27
顾飞龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] 2. With the screw 6212 as the fulcrum, the swing range at the front and rear hooks 663 and 664 is also relatively large. When it is used as the action of hooking and tangent, the stop and start have a greater sense of frustration. It is easier to generate vibration and loss, which will imperceptibly reduce the life of the machine parts or increase the troubles
[0017] 3. Only with the screw 6212 as the fulcrum, the entire cutter arm 62 and the components on it cannot effectively fine-tune its position or swing range, which will have a certain degree of adverse effect on the actual operations such as pulling, hooking, and cutting when cutting the thread
[0018] 4. Thin and protruding knife rod 66 is relatively easy to generate vibration during operation, which will affect the hook rod and cutting

Method used

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  • Improved string cutter for sewing machine
  • Improved string cutter for sewing machine
  • Improved string cutter for sewing machine

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Experimental program
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Embodiment Construction

[0035] First of all, please refer to FIG. 1 , the present invention is composed of a plate body 1 , a cutter arm 2 , a hook arm 3 and a cantilever group 4 in combination with a commonly used clip 63 , a cutter 64 , a hook rod 66 and a swing arm 67 . .

[0036] Please refer to FIGS. 1 to 5 together. There are several positioning holes 11 on the periphery of the board body 1 , and a configuration slot 12 and two positioning sliding grooves 13 are formed therein. The two positioning sliding grooves 13 both have screw holes 131 for the screws 132 to pass through. After passing the cantilever group 4, it is screwed.

[0037] One end of the cutter arm 2 can be placed in the configuration slot 12, and a hole 21 is provided for assembling the protruding post 210, the other end is provided with an elongated hole 22, and the rear end is respectively provided with a hole 23 and a screw hole 24 for A clip 63 and a cutter 64 are assembled. The right side of the hole 21 is additionally pr...

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PUM

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Abstract

The improved string cutter for sewing machine has one cantilever combination for precise displacement regulation. The stub below the left cantilever is set inside the long hole in the hooked rod arm, and the stub below the right cantilever is set lug hole of the cutting arm, so that the cutting arm has small oscillating torque around the stub and small oscillating load and driving force while change the path. The oscillation is smooth and moderate and has raised string cutting effect. The improved string cutter is precise and practical.

Description

(1) Technical field [0001] The present invention relates to an improved sewing machine thread cutter, in particular to a new structure of a sewing machine special thread cutter suitable for chain stitching. (2) Background technology [0002] A thread cutter for sewing machines suitable for chain stitching, such as the conventional U.S. Patent No. 4,098,209, is an example; and the applicant's earlier and approved Announcement No. 2892012 is the structure for the aforementioned U.S. patent case improvements; see Figure 10 As shown, the thread cutter is composed of a plate body 61, a cutter arm 62, a clip 63, a cutter 64, a hook lever arm 65, a hook lever 66 and a swing arm 67; wherein: [0003] The plate body 61 has a number of positioning holes 611 around it, so as to fit the screws 6111 to be threaded and positioned on the sewing machine table, at the same time, the plate body 61 has a configuration slot 612 on one side of the surface, and a screw hole 6121 at the rear end ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B65/02
Inventor 顾飞龙
Owner 顾飞龙
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