Sewing machine

A sewing machine and needle plate technology, applied in the field of sewing machines, can solve problems such as lack of processing quality

Inactive Publication Date: 2007-07-18
YAMATO SEWING MASCH MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, since the above-mentioned positioning needle is in order to catch the bottom thread 20, it is a structure that penetrates the cloth w at the same time as the needle and reaches under the needle plate, so when sewing is performed with a sewing machine having the above-mentioned positioning needle, as shown in FIG. 3 , Holes H, H... are formed side by side on one side of the stitching of the double loop (the entry side of the bottom needle) along with the p...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment Construction

[0035] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Fig. 1 is an explanatory diagram of the sewing operation of the sewing machine of the present invention. In addition, in the following description, the sewing machine that executes double lockstitching with one needle 1 and bottom needle 2 on the cloth w conveyed on the needle plate 14 (refer to FIG. 2 and FIG. 3 ) is described, However, the present invention is also applicable to using multiple needles 1, 1... and bottom needle 2 to implement double thread lock stitching, safety sewing or using multiple needles 1, 1... and bottom needle 2 to implement parallel interlocking sewing in the sewing machine.

[0036]The above-mentioned needle 1 moves up and down with a predetermined stroke in the conveying area of ​​the needle plate 14 including the cloth w, and the above-mentioned bottom needle 2 is on the lower part of the needle plate 14 in the same direc...

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Abstract

The invention provides a sewing machine, which can obtain the seam of desirable double multi-thread chain stitch where looper string gets caught by the loop of needle thread on the reverse side of cloth while the looper string is loosened without leaving any traces on the cloth, and also can stably obtain the sewing-goods with good quality. The sewing machine is composed of a retainer rod 30 is provided which projects and withdraws backward and forward within a plane roughly in parallel with the feed surface of the cloth W while interlocked with the rise and fall of the needle 1, and this retainer rod 30 catches the looper thread 20 at the projection side of the looper 2 ahead of the needle 1 when projecting rearward, and holds the caught looper thread 20 between the rod and needle 1 under tension.

Description

technical field [0001] The present invention relates to a sewing machine, in particular to a sewing machine that uses a needle that penetrates the cloth on the needle board to move up and down and a bottom needle that moves forward and backward in the left and right directions under the needle board to perform sewing. And sewing machines for safe sewing. Background technique [0002] The sewing action of a double-thread lockstitch sewing machine with one or more needles that hold the needle thread and move up and down through the fabric on the needle board and the bottom needle that holds the bottom thread and moves forward and backward under the needle board in the left and right directions is repeated in the following order Operational: the loop of needle thread spun out by the downward movement of the needle and left under the needle plate when it enters the transition to the upward movement is caught by the bottom needle which enters synchronously with the upward movemen...

Claims

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Application Information

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IPC IPC(8): D05B61/00D05B1/12D05B1/10
CPCD05B1/10
Inventor 田中良幸
Owner YAMATO SEWING MASCH MFG CO LTD
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