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Sewing machine

A sewing machine and sewing needle technology, which is applied to sewing machine components, sewing machine needle holders, sewing machine thread take-up devices, etc., can solve the problems of no public methods, reduce the difference in sewing conditions, improve sewing quality, and realize individual parts. number effect

Active Publication Date: 2014-08-27
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the upper thread may be pulled out from the sewing needle on the stop side due to the movement of the balance during sewing.
However, in the above-mentioned Patent Document 1, there is no disclosure of a specific method for acting on the upper thread hanging from the sewing needle.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0097] [Summary of Embodiment]

[0098] based on Figure 1 to Figure 12 , the embodiment of the present invention will be described.

[0099] The sewing machine 100 described below as this embodiment is a so-called electronic cycle sewing machine, and has a holding frame as a cloth holding part for holding a cloth as a sewing object to be sewn. The holding frame relatively moves with respect to the sewing needle, and a sewing pattern based on predetermined sewing data is formed on the cloth held by the holding frame. In addition, this sewing machine 100 has two needle bars 110, 120, and the needle bars 110, 120 can be switched and selectively used. Thus, for example, two types of upper threads U1, U2 having different characteristics such as color and thickness can be inserted into the needles 11, 12 attached to the respective needle bars 110, 120, respectively, and sewing patterns can be formed using the two types of upper threads.

[0100] figure 1 is a perspective view o...

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PUM

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Abstract

The invention provides a sewing machine which can make needle poles smoothly switched. The sewing machine comprises two needle poles respectively maintaining a sewing needle on the lower end part; a needle pole base supporting the needle poles in a vertically moving way; a sewing needle vertical movement mechanism exerting vertical movemention motion on each needle pole through a needle pole retaining part; needle pole stopping mechanisms respectively arranged relative to each needle pole and switching between a needle pole retaining state realized through the needle pole base and a needle pole retaining state realized through the needle pole retaining part; a stopping selecting mechanism inputting two retaining state switches according to each needle pole stopping mechanism; and a switch driving mechanism selecting an applied needle pole during a sewing process through the needle pole base. The needle pole base can make the two needle poles supported on a sewing machine frame in a way that the lower end parts of the two needle poles swing. Swing motion is exerted on the needle pole base through a switch of driving mechanism. One needle pole is thus selected from the two needle pole for a sewing purpose.

Description

technical field [0001] The present invention relates to a sewing machine with two needle bars. Background technique [0002] Currently, there is known a sewing machine which has two needle bars for holding two needles respectively for sewing selectively using two kinds of suture threads having different properties such as color and thickness, and which are selectively Sewing is performed by positioning at the same needle drop position (for example, refer to Patent Document 1). [0003] In this sewing machine, a needle bar base that can move up and down to support two needle bars is provided on the sewing machine frame in a horizontally movable manner. Move to switch the positions of the two needle bars. [0004] In addition, in this sewing machine, holding units for holding the upper thread are respectively provided on each sewing needle, so that the upper thread of the sewing needle that is not sewing will not be pulled out from the needle hole of the sewing needle due to...

Claims

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Application Information

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IPC IPC(8): D05B55/14D05B47/04D05B49/00
CPCD05B1/08D05B55/10D05B55/16D05B69/30
Inventor 坂本真一平泽裕山岸正则加藤大介大和田恭平井村智
Owner JUKI CORP
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