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Cloth feeding mechanism of sewing machine

A technology of cloth feeding device and sewing machine, which is applied in the direction of sewing machine components, program-controlled sewing machines, cloth feeding mechanism, etc., and can solve the problem of not being able to fine-tune the amount of cloth feeding with proficiency

Inactive Publication Date: 2004-11-03
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in the above-mentioned conventional cloth feeding device, since the cloth feeding amount is automatically changed within the set range (between the upper limit value and the lower limit value) by operating the switch on the operation panel, it cannot be adjusted according to each Fine-tune the amount of cloth feeding according to the sewing situation or the operator's proficiency and preference

Method used

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  • Cloth feeding mechanism of sewing machine
  • Cloth feeding mechanism of sewing machine
  • Cloth feeding mechanism of sewing machine

Examples

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Embodiment Construction

[0046] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0047] The sewing machine involved in this embodiment, such as figure 1 As shown, it includes: a bottom plate part 1 (dashed line) which is placed on the sewing machine workbench Z and provided with a needle plate thereon, and a machine head 2 extending slightly parallel to the bottom plate part 1 above the bottom plate part 1, and The needle bar 3 that extends downward from the front end of the machine head 2 and freely moves up and down, the spindle motor 4 that moves the needle bar 3 up and down through an unshown upper shaft (main shaft) and crank mechanism, and the handle The cloth feeding device for conveying the cloth placed on the bottom plate part 1, and the control device 5 for comprehensively controlling the overall operation of the sewing machine, and the cloth feeding device that can be used to operate the cloth feeding device for reverse sewing (...

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Abstract

The feeding device for the sewing machine is provided with: a feeding transmission mechanism 20 for transporting fabrics in a prescribed direction by swinging a feed dog 11 so as to come in contact with and leave the fabrics; an angle piece 30 for changing the amount of feeding of the feeding transmission mechanism; a stepping motor 50 for driving the angle piece; and a CPU 80 for controlling the amount of driving of the stepping motor so as to change the amount of feeding. The feeding device is further provided with: an operation lever 6 having a prescribed operable range Sa; a potentiometer 70 for detecting the amount of operation of the operation lever; and a program 110 for setting the amount of feeding for setting the correspondence relation between the amount of operation of the lever and the amount of feeding. The CPU controls the amount of driving of the stepping motor so as to change the amount of feeding corresponding to the amount of operation of the lever on the basis of the correspondence relation set by the program for setting the amount of feeding. To provide an easily operable feeding device for a sewing machine wherein the amount of feeding can be freely adjusted according to various kinds of sewing situations and the skill / liking of an operator.

Description

[0001] technology area [0002] The present invention relates to a cloth feed device for a sewing machine that feeds cloth according to a feed amount corresponding to an operation amount of an operating mechanism, and more particularly to a cloth feed device for a sewing machine with good operability that can freely control the feed amount. technical background [0003] A conventional sewing machine is provided with a cloth feeding device that feeds a to-be-sewn object (cloth) in a predetermined direction when a predetermined sewing operation is performed. In recent years, a cloth feed device having a cloth feed adjustment mechanism capable of changing the movement locus of a feed dog that conveys a to-be-sewn object has been proposed (for example, refer to Japanese Patent Document 1). This feed adjustment mechanism can change the amount of feed by changing the trajectory of the feed dog using a solenoid or a slider. [0004] The slider provided on the above-mentioned cloth f...

Claims

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Application Information

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IPC IPC(8): D05B19/16D05B27/00D05B27/02
CPCF16B5/02
Inventor 伊藤文夫田中正彦
Owner JUKI CORP
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