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Serging sewing machine and method for forming serging sewing

A sewing machine and seaming technology, which is applied to program-controlled sewing machines, sewing equipment, textiles and papermaking, etc. It can solve the problems that the position cannot be changed, the shape can not be sewn, and the seam cannot be decorated, etc., and the effect of changing the width of the seam can be achieved.

Inactive Publication Date: 2007-08-22
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, as a conventional sewing machine that can move the needle, once the needle is fixed, it moves up and down at its fixed position to form stitches, and the position cannot be changed during sewing.
Therefore, the previous overlock sewing machines cannot perform decorative overlock, that is, they cannot sew shapes like fan shapes.
[0008] Moreover, when changing the seam width during the seam sewing process, it is necessary to temporarily stop the sewing machine in the middle of sewing, change the lower needle position of the machine needle as described above, and then restart the sewing machine, so the operating efficiency is significantly reduced.

Method used

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  • Serging sewing machine and method for forming serging sewing
  • Serging sewing machine and method for forming serging sewing
  • Serging sewing machine and method for forming serging sewing

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Embodiment Construction

[0040] Hereinafter, the present invention will be described with reference to the drawings.

[0041] The overlock sewing machine shown in FIG. 1 has a bed 2 and a head 4 . On the machine platform 2, a needle plate 6 is fixed with screws and a cloth feeding mechanism (not shown) is provided to move the sewing material along the X direction.

[0042] A needle bar 9 that supports the rear end of the machine needle 8 and can move up and down is installed on the machine head 4, and a thread take-up lever 10 that can move up and down to supply and tighten the upper thread passing through the machine needle 8, and a cloth cutter 12a moves up and down the cutting mechanism 12 that cuts out the selvedge along the sewing material feeding direction. The above-mentioned needle bar 9, thread take-up lever 10, and cloth cutter 12a move up and down in conjunction with the rotation of the main shaft of the sewing machine (not shown). In addition, the Y direction in the drawing is perpendicu...

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PUM

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Abstract

Provided is a serging sewing machine and a method for forming serging sewing, the stitches are formed while the needle location points N1, N2, N3, etc., are changed in the direction intersecting with the cloth feed direction in the formation of the edge over cast stitches by a needle 8 and loopers 16 and 20.

Description

technical field [0001] The invention relates to an overlock sewing machine and a method for forming overlock sewing. Background technique [0002] Generally speaking, overlock sewing is a seam wrap made by using an overlock sewing machine with a specified number of machine needles, an upper thread shuttle, a lower thread shuttle, etc., to make the end of the sewing material cut by a cutter at the same time with the upper thread and the bottom thread. live and form. Furthermore, depending on the number of needles used and the number of upper and lower threads, there are sewing methods such as 1 needle with 2 threads, 1 needle with 3 threads, and 2 needles with 4 threads. [0003] Next, the operation of the overlock sewing machine with 1 needle and 3 threads will be described with reference to FIGS. 9 to 11. FIG. FIG. 9(A) shows a state in which the needle 8 penetrates the sewing material W at a position slightly raised from the lowest point and forms a loop of the upper thr...

Claims

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Application Information

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IPC IPC(8): D05B1/20D05B19/12
Inventor 贞末数也
Owner JUKI CORP