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Air-driven threading device for sewing machine

一种穿线装置、缝纫机的技术，应用在上线装置、缝纫机元件、缝纫机用套圈机构等方向，能够解决弯针线穿线操作麻烦、难以理解穿线装置使用方法等问题

Active Publication Date: 2014-02-19
SUZUKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in such a gas delivery threading structure, it is necessary to press the stopper shaft (locating pin) against the linking positioning plate with one hand, while manually turning the pulley with the other hand to lock the seam forming device, and at the same time linking Threading connecting device, so for unskilled operators who are not proficient in sewing machines, it is difficult for the operator to understand how to use the threading device, and the threading operation of the looper thread using both hands at the same time is very troublesome, so training is required

Method used

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  • Air-driven threading device for sewing machine
  • Air-driven threading device for sewing machine
  • Air-driven threading device for sewing machine

Examples

Experimental program
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Embodiment Construction

[0050] Next, a preferred embodiment of the gas conveying threading device of the present invention applied to an overlock sewing machine will be described in detail with reference to the accompanying drawings.

[0051] Such as figure 1 , Figure 9 As shown, the overlock sewing machine 1 is composed of a main frame (main frame) and a sub frame (sub frame) forming a base (bed) and an arm (arm).

[0052] The sewing machine motor M is installed on the sub-frame, and the main shaft 2 extends horizontally along the frame. The main shaft 2 is rotationally driven by a sewing machine motor M via a timing belt MB.

[0053] Synchronized with the main shaft 2, the upper looper 4 driven by the looper driving mechanism 3 (3a, 3b), the lower looper 5, the needle driven by the needle driving mechanism 6, the cloth pressing mechanism that presses the cloth on the needle plate, The cloth feeding mechanism 7 that advances the cloth one needle eye at a time constitutes a seam forming device. ...

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PUM

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Abstract

Problem: To thread a looper with a one-touch operation. Solution: Provided is a looper threading and sewing switching mechanism (30) comprising a push-button (33) for push operation of a push-button shaft (32) from which a control pin (31) protrudes; a control groove cam (38) comprising first through fourth control groove cam sections (34 - 37) that receive the control pin; a link shift plate (40) that supports a thread guide section and that by using a first spring (39) is snapped toward a threading state in which a thread guide outlet of the thread guide section is in contact with a looper thread inlet; and a link positioning plate (82) comprising a peripheral surface (80) and an interlocking cutaway section (81) that rotate integrally with a main shaft (2) and with which a top section (41) of the push-button shaft comes into contact.

Description

technical field [0001] The present invention relates to a gas delivery threading device for a sewing machine, and more particularly to a sewing machine for automatically passing a looper thread through a looper (ルパパ) of a hemming sewing machine, a double loop sewing machine, a flat stitch sewing machine, etc. by using pressurized gas Gas delivery threading device. Background technique [0002] Conventionally, there is known an air delivery threading device in an overlock sewing machine, a double loop sewing machine, a flat stitch sewing machine, etc., by connecting a looper thread outlet from a thread introduction portion where the looper thread is inserted to the tip of the looper needle. The hollow looper thread guide that communicates with each other uses the flow of pressurized gas supplied into the hollow looper thread guide to transport the looper thread. Therefore, there is no need for complicated threading, and the threading can be performed with better operability,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B63/00D05B57/02
CPCD05B87/00D05B63/02D05B57/34D05D2207/04D05B87/02D05B63/00D05B57/02
Inventor 佐久间孝一石川正人佐藤充
Owner SUZUKI MFG CO LTD
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