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Sewing machine and control method for the same

A sewing machine and needle technology, which can be applied to sewing machine control devices, sewing machine components, sewing equipment, etc., can solve problems such as poor sewing quality

Active Publication Date: 2012-10-17
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the drive of the main shaft and the drive of the cloth feeding mechanism are not synchronized, the sewing quality may deteriorate

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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  • Sewing machine and control method for the same
  • Sewing machine and control method for the same
  • Sewing machine and control method for the same

Examples

Experimental program
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Embodiment Construction

[0041] A first embodiment of the present invention will be described with reference to the drawings. figure 1 The upper side, the lower side, the right side, the left side, the front side, and the back side of the paper are the upper side, the lower side, the right side, the left side, the front side, and the rear side of the sewing machine 1, respectively. The sewing machine 1 includes a base portion 2 , a column portion 3 , and an arm portion 4 . The base portion 2 is a base of the sewing machine 1 . The column part 3 extends upward from the right end of the base part 2 . The arm part 4 extends leftward from the upper end of the column part 3 and is opposite to the upper surface of the base part 2 . The machine arm 4 is provided with a presser foot 17 under its left end and holds a needle bar 7 inside. Needle bar 7 is equipped with organic needle 8 at its lower end (referring to figure 2 ). The needle bar 7 and machine needle 8 move up and down along with the driving o...

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Abstract

The invention relates to a sewing machine and a control method for the same, utilizing different motors to drive a spindle and a cloth-feeding mechanism. The sewing machine comprises a main motor for driving the spindle, and a cloth-feeding motor for driving the cloth-feeding mechanism,the sewing machine acquires the rotating angle of each output shaft of the main motor and the cloth-feeding motor,the CPU sets the target rotating angle according to the correspondence between the rotating angle of the main motor and the output shaft of the cloth-feeding motor and the practical rotating angle of the main motor,the CPU calculates the deviation between the set target rotating angle and the rotating angle of the practical cloth-feeding motor,and the CPU calculates the rotating speed indicated to the cloth-feeding motor according to the calculated deviation.

Description

technical field [0001] The invention relates to a sewing machine which uses different motors to drive a main shaft and a cloth feeding mechanism and a control method of the sewing machine. Background technique [0002] There is known a sewing machine which utilizes different motors to drive the main shaft and the cloth feeding mechanism. The sewing machine can freely control the amount of cloth feeding, so it can easily sew various patterns, but it is necessary to keep the driving of the main shaft and the driving of the cloth feeding mechanism synchronous. In the sewing machine described in Japanese Patent Laid-Open Publication No. 228276 of 1993, the cloth feeding start timing is determined according to the rotation speed and rotation phase of the main shaft, and the determined cloth feeding starting timing is corrected according to the cloth feeding amount and the acceleration of the main shaft. . Therefore, it is possible to start feeding the cloth at an appropriate ti...

Claims

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B3/02D05B3/04D05B27/22D05B69/00
Inventor 竹村徹
Owner BROTHER KOGYO KK
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