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Machine and needle bar

A sewing machine and needle bar technology, which is applied in the field of industrial use, can solve the problems of unstable operation of the needle bar, increase the manufacturing cost of the sewing machine, etc., and achieve the effects of simple structure, improved yield and reduced resistance.

Inactive Publication Date: 2015-02-18
HAMUSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will not only increase the manufacturing cost of the sewing machine, but also cause unstable operation of the needle bar if the gear structure is not manufactured precisely enough

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Machine and needle bar
  • Machine and needle bar
  • Machine and needle bar

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0042] First, refer to Figure 1 to Figure 4A first embodiment of the sewing machine 1 according to the present invention will be described.

[0043] This sewing machine 1 consists of figure 1 , figure 2 parts shown. It includes a sewing machine body 10 for accommodating various parts, a needle bar 20 arranged on the sewing machine body, a sewing needle 30 fixed on the needle bar 20, a kettle 40 for receiving the sewing needle 30, a cloth pressing plate 50 for pressing the cloth, and a feeding material for transporting the cloth device 60. The needle bar 20 and the sewing needle 30 are reciprocated up and down by a driving motor whose illustration is omitted. Then, while the processed objects such as synthetic leather, leather products, and cloth are fed manually or automatically by the feeding device 60, the needle bar 20 and the seam reciprocate up and down relative to the kettle 40, so that the upper thread t of the sewing needle 30 passes through The lower thread (no...

no. 2 Embodiment approach

[0051] Below, will refer to Figure 5 to Figure 10 , and a second embodiment of the sewing machine according to the present invention will be described.

[0052] In addition, in the following content, only the structure different from the above-mentioned embodiment will be explained, and the description of the same structure will be omitted and the same code|symbol will be attached. In addition, regarding the vertical reciprocating movement of the needle bar 21 of the sewing machine, the highest position reached by the needle bar 20 is called the upper dead point, and the lowest position reached by the needle bar 20 is called the bottom dead point.

[0053] Such as Figure 5 ~ Figure 8 As shown, in this embodiment, the air ejection portion 70 is provided near the rear of the needle bar 20 , and the air receiving portion 25 is provided on the rear side of the front end side of the needle bar 21 of the needle bar 20 . The air receiving portion 25 receives the air ejected from ...

no. 3 Embodiment approach

[0068] Below, will refer to Figure 11 ~ Figure 13 , and a third embodiment of the sewing machine according to the present invention will be described. In addition, in the following content, only the structure different from the above-mentioned embodiment will be explained, and the description of the same structure will be omitted and the same code|symbol will be attached.

[0069] In this embodiment, if Figure 11 As shown, a guide portion 80 is provided near the right side of the needle bar 20 , and a protruding portion 26 is provided on the side of the right circumference of the needle bar 21 on the front end side of the needle bar 20 . When the needle bar 20 moves downward, the front-end side needle bar 21 rotates around the axis G of the up and down reciprocating motion sequentially around the axis G with the protruding part 26 guided by the guide part 80. At , the specified basic orientation is restored.

[0070] Such as Figure 11 As shown, the aforementioned protru...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The purpose of the present invention is to provide a sewing machine which has a simple structure and is capable of neatly finishing a seam when sewing a workpiece while tracing a curve. Provided is a sewing machine (1) provided with a sewing machine body (10), a needle bar (20) provided in the sewing machine body (10), and a sewing needle (30) held in the needle bar (20), the needle bar (20) and the sewing needle (30) making a vertical reciprocating motion relative to the sewing machine body (10). The needle bar (20) is separately composed of a tip-side needle bar (21) for holding the sewing needle on an axis of the vertical reciprocating motion and a base-end-side needle bar (22) provided in the sewing machine body (10) on the axis, the tip-side needle bar (21) rotating on its axis around the axis of the vertical reciprocating motion relative to the base-end-side needle bar (22).

Description

technical field [0001] The present invention relates to a sewing machine used for sewing synthetic leather, leather products, cloth and other processed objects and a needle bar used for the sewing machine, and is mainly used for industrial purposes. Background technique [0002] General sewing machine is made of sewing machine body, the needle bar that is positioned on the sewing machine body, the sewing needle that is fixed on the needle bar, undertakes the still of sewing needle and the feeding device that feeds cloth and constitutes. The needle bar and the sewing needle reciprocate up and down under the action of the driving motor. Then, the synthetic leather, leather products, cloth and other processed objects are manually or automatically fed by the feeding mechanism. At the same time, the needle bar and the sewing needle reciprocate up and down relative to the kettle, so that the upper thread passing through the sewing needle and the lower part of the kettle The threa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B55/14
CPCD05B55/14D05B69/14D05B69/30
Inventor 宫地康次
Owner HAMUSU
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