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Differential cloth feeding sewing machine

A sewing machine and cloth feeding technology, which is applied in the direction of cloth feeding mechanism, sewing machine components, and program-controlled sewing machines, can solve the problems of processing error, assembly error, and slow response of the conversion of the shirring amount, etc., so as to realize the sewing quality and improve the sewing quality control

Inactive Publication Date: 2005-03-16
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, on the above-mentioned conventional differential feed sewing machine, the amount of shirring is also converted when the sewing section is switched. etc., or due to the use of the belt mechanism, the response to the shifting of the shirring amount is slow, and sometimes the necessary shirring amount cannot be ensured in each section

Method used

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  • Differential cloth feeding sewing machine
  • Differential cloth feeding sewing machine
  • Differential cloth feeding sewing machine

Examples

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Embodiment Construction

[0056] (overall structure of the embodiment)

[0057] Now refer to Figure 1 to Figure 21 Examples of the present invention will be described. The differential feed sewing machine 10 of this embodiment is a sewing machine that sews while pulling together by setting a difference in feeding speed of the upper and lower fabrics to be sewn. For example, it is used for sleeves and garments. Sewing of pieces, etc.

[0058] And, so-called gathering means that there is a difference in sewing pitch between the upper cloth and the lower cloth, so that the seam margin can be stretched to increase the difference (the amount of gathering). Therefore, when the sleeves and parts are sewn, the sewn portion on the shoulder side is made larger than the underarm side, so that the shoulder side that requires stretchability after sewing can be left roomy.

[0059] Here, the up and down movement direction of the machine needle 11 described later is defined as the Y direction (up and down directi...

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PUM

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Abstract

To improve the operability during sewing by reducing the effects of response delay at the time of switching of 'contracting amount'. The differential feed sewing machine (10) performs sewing by differentiating the feeding amount of upper cloth and lower cloth by upper feeding devices (30 and 60) and lower feeding devices (70 and 74). A motion control means (80) of the upper feeding devices (30 and 60) and the lower feeding devices (70 and 74) can set and input the contracting amount for each of several sewing sections which are switched at the time of sewing and is provided with an excess change function for performing motion control in such a way that the contracting amount is changed temporarily more largely than the amount of change which is previously set with respect to two sewing sections before and after the switching at the time of switching of specified sewing sections.

Description

technical field [0001] The present invention relates to a differential feed sewing machine which makes the upper cloth feed amount different from the lower cloth feed amount for sewing. Background technique [0002] A conventional differential feed sewing machine has a top feed section arranged above the needle plate to feed the top material, a bottom feed section to feed the bottom material on the needle plate from below, and a top feed section and a bottom feed section. Motion control mechanism for cloth part motion control (for example, refer to Patent Document 1). [0003] In addition, in this conventional differential feed sewing machine, a plurality of sewing sections in which the shirring amounts are respectively determined in advance are set, and sewing is performed by sequentially changing the sewing sections and changing the shirring amounts sequentially. . [0004] In addition, the so-called amount of shirring means that there is a difference in the width of the...

Claims

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Application Information

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IPC IPC(8): D05B27/16D05B19/16
Inventor 镰仓新治
Owner JUKI CORP