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Thread tension device for sewing machine

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

Inactive Publication Date: 2007-10-31
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In addition, the thread adjusting device of the existing sewing machine has the problem of unstable thread tension
[0012] 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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  • Thread tension device for sewing machine
  • Thread tension device for sewing machine
  • Thread tension device for sewing machine

Examples

Experimental program
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Effect test

Embodiment Construction

[0047] First, an embodiment of a thread adjusting device for a sewing machine according to the present invention will be described with reference to FIGS. 1 to 5 .

[0048] As shown in FIG. 1, the thread adjusting device 1 of this embodiment has a pair of ring-shaped thread adjusting discs 2 (2A, 2B) capable of clamping the upper thread (FIG. 2). As shown in FIG. 2 and FIG. 3 , these wire adjustment reels 2 are supported on wire adjustment rods 3 . As shown in Figures 2 and 4, the wire adjusting rod 3 forms four cylindrical outer peripheral surfaces, and the order of each outer peripheral surface from right to left in Fig. The mounting part 3b, the spring mounting part 3c, and the stand mounting part 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...

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PUM

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Abstract

A yarn change unit of a sewing machine comprises a pair of line bobbins for clamping suture line, platen parts and driving mechanism equipped with a driving rod of the said platen parts for making the platen parts press against the said line bobbin. The said platen parts can be freely mounted on the driving rod of the driving mechanism.

Description

[0001] This application is based on the divisional application of the patent application whose application number is 02103190.8, the title of the invention is "up and down conveying sewing machine and thread adjusting device", and the filing date is February 4, 2002. technical field [0002] 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 [0003] 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. [0004] The term "pleating" here refers to, for example, when sewing a three-dimensional shape such as a suit sleeve, by making the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B47/00D05B47/04D05B19/12D05B27/06D05B27/08D05B69/28
CPCD05B69/28D05B27/06D05B47/04
Inventor 镰仓新治石桥次郎野村绍雄佐藤正彦
Owner JUKI CORP