Uper and lower conveying sewing machine and thread adjuster

A thread adjusting device and sewing machine technology, applied in the direction of sewing machine control devices, sewing machine components, program-controlled sewing machines, etc., can solve problems such as unstable thread tension, uneven pressure on platen parts, and unstable thread tension, etc., to achieve Effect of reducing thread tension

Inactive Publication Date: 2002-09-18
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In addition, the thread adjusting device of the existing sewing machine has the problem of unstable thread tension
[0011] That is, in the thread adjusting device of the sewing machine in the past, since the pressure plate member opposite to the thread adjusting disc is pressed on the ridge of the inner hole of the thread adjusting disc with the axis center of the driving rod as the normal line, When the plate part is tilted, the pressure on the pressure plate part of the thread adjustment plate is not uniform
The result is instability of thread tension

Method used

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  • Uper and lower conveying sewing machine and thread adjuster
  • Uper and lower conveying sewing machine and thread adjuster
  • Uper and lower conveying sewing machine and thread adjuster

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] First, refer to Figure 1 to Figure 5 Embodiments of the sewing machine thread adjusting device of the present invention will be described.

[0047] Such as figure 1 As shown, the thread adjustment device 1 of this embodiment has the ability to hold the upper thread ( figure 2 ) A pair of ring-shaped wire-adjusting discs 2 (2A, 2B). Such as figure 2 And as shown in FIG. 3 , these wire adjusting discs 2 are supported on the wire adjusting rods 3 . Such as figure 2 As shown in FIG. 4, the wire adjusting rod 3 forms four cylindrical outer peripheral surfaces, and each outer peripheral surface in FIG. , the spring mounting portion 3c, and the table mounting portion 3d. Moreover, the diameter of the outer peripheral surface of the wire adjusting rod 3 is the largest at the spring mounting portion 3c, the diameters of the wire adjusting disc mounting portion 3b and the anti-rotation member mounting portion 3a are sequentially reduced, and the diameter of the table mo...

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PUM

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Abstract

A sewing machine with up and down conveying, which has an upper fabric conveying mechanism for conveying the upper fabric and a lower fabric conveying mechanism for conveying the lower fabric, by changing the difference in the conveying volume of the two conveying mechanisms, the amount of pleats performed on the sewn fabric is adjusted. The utility model has a thread adjusting device driven by an electric drive device capable of changing the thread tension, and a control mechanism for controlling the thread adjusting device to change the thread tension corresponding to the amount of pleating. It has a setting mechanism capable of setting the set value of the thread tension corresponding to the amount of pleats received; the control mechanism controls the thread adjusting device corresponding to the amount of pleats received, so that it can give the thread tension of the set value set by the setting mechanism. This type of vertical feed sewing machine can always sew with the optimum thread tension even if the amount of gathers varies in the continuous sewing section.

Description

technical field [0001] The present invention relates to a vertical feed type sewing machine capable of sewing while tucking in (easing, shrinkage seam). Moreover, the present invention also relates to a thread adjusting device of a sewing machine for giving thread tension. Background technique [0002] At present, people know that there is a kind of upper and lower sleeves that can be sewed while performing the pleats while the sleeves are on, as disclosed in the Japanese Patent Publication No. 4-66598 or the Patent Publication Publication No. 3-37958. Conveyor sewing machine. [0003] The term "pleating" here refers to, for example, when sewing a three-dimensional shape such as a suit sleeve, by making the feeding amount of the outer fabric (upper fabric) larger than that of the inner fabric among the two overlapping fabrics to be sewn. (Lower fabric) conveying amount, forming a seam that makes the outer fabric have a certain amount of excess. [0004] Generally speaking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B47/04D05B19/12D05B27/06D05B27/08D05B69/28
CPCD05B27/06D05B47/04D05B69/28
Inventor 镰仓新治石桥次郎野村绍雄佐藤正彦
Owner JUKI CORP
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