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Top thread holding device for sewing machine

A technology for holding devices and sewing machines, which can be used in the sewing machine to cut off the thread mechanism, sewing machine components, sewing machine ring mechanism, etc., and can solve the problems of unusable, distance can not be reduced, etc.

Inactive Publication Date: 2009-05-06
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the above-mentioned conventional needle thread holding device needs a sufficient space as mentioned above, and the distance from the outer diameter of the cylindrical machine table part, the vertical movement position of the sewing machine needle to the front end of the table part cannot be reduced, it cannot use

Method used

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  • Top thread holding device for sewing machine
  • Top thread holding device for sewing machine
  • Top thread holding device for sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Hereinafter, embodiments of the needle thread holding device according to the present invention will be described with reference to the drawings. And, when describing the structure of each part of the sewing machine body comprising the needle thread holding device according to the present invention, in this embodiment, each direction shown by the XYZ axes in the figure is determined, and the + in the X-axis direction is particularly indicated. The ??? side is right and one side is left; the + side in the Y-axis direction is front and the side is back; the + side in the Z-axis direction is up and one side is down.

[0022] First, the structure of the cylindrical bed sewing machine 30 (hereinafter referred to as "sewing machine") will be briefly described.

[0023] As shown in FIG. 1 , the sewing machine 30 provided with the needle thread holding device 100 of this example has a cylindrical bed portion 31 a protruding forward at the front end and forming an elongated (sub...

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PUM

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Abstract

A needle thread holding device for a sewing machine. This needle thread holding device 100 comprises: a clamping means D provided on the cylinder bed part 31a of a sewing machine bed part 31 for clamping and holding the end part of a needle thread inserted to a needle at the lower part of a throat plate 50 at the start of sewing; a stepping motor A for driving the clamping means D and making the clamping means D clamp the end part of the needle thread; and a connection means B having a long- length connection member 12 connecting the clamping means D and the stepping motor A. Then, the stepping motor A is arranged on the side of the erected body part 32 of the sewing machine 30 more than the cylinder bed part 31a, and the connection member 12 transmits the driving force of the stepping motor to the clamping means by back and forth motion or rotary motion between the side of the erected body part of the sewing machine and the vertical movement route side of the needle 52. It is capable of being adapted even to a so-called 'cylinder bed sewing machine' having a thin and long cylinder bed part on a sewing machine bed.

Description

technical field [0001] The present invention relates to a sewing machine needle thread holding device having an elongated cylindrical bed portion. Background technique [0002] For example, as disclosed in Japanese Patent Publication No. 2671478 and Patent Laid-Open Publication No. 2000-325683, when sewing starts, a needle thread holding device that holds the end of the needle thread is clamped. [0003] However, the upper thread holding devices shown in these publications require at least two actuators (air cylinders, etc.), and these multiple actuators transmit the driving force of the actuators to the clamping upper thread end parts. All parts are arranged on the bottom of the sewing machine table. In addition, the position for holding the upper thread is located in the direction opposite to the longitudinal body of the sewing machine sandwiching the vertical movement path of the sewing machine needle (Patent No. 2671478), or in the direction of connecting the needle of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B65/06
CPCD05B37/04D05B63/00D05B65/02D05B65/06
Inventor 日塔隆皆川忠义
Owner JUKI CORP