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Sewing machine and control method thereof

A sewing machine and main motor technology, which is applied in the direction of sewing machine control devices, sewing machine components, sewing equipment, etc., can solve the problems that the sewing machine cannot sew, and achieve the effect of preventing the sewing operation from being hindered

Inactive Publication Date: 2014-08-20
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the sewing machine sometimes cannot start sewing from the cloth position specified by the user

Method used

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  • Sewing machine and control method thereof
  • Sewing machine and control method thereof
  • Sewing machine and control method thereof

Examples

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Embodiment Construction

[0023] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. refer to Figure 1 ~ Figure 3 , the structure of the sewing machine 1 will be described. In the following description, up and down, left and right, and front and rear indicated by arrows in the drawing are used. 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 base part 2 is attached to the rectangular hole (not shown) in the upper surface of the table 20 from above. The column part 3 extends vertically 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 arm part 4 is provided with a presser foot 17 below the left end thereof, and the presser foot 17 is opposed to the needle plate 15 provided on the upper surface of the base part 2 . Th...

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Abstract

The invention relates to a sewing machine capable of sewing from a user designated position, and a control method of the sewing machine; the sewing machine comprises the following structures: a main motor using a main shaft to rotate so as to drive a pin rod; a cloth feeding motor enabling feeding teeth to drive and feed along with the rotation of the main shaft driven by the main motor in synchronization. A sewing machine CPU employs a feeding coder used for detecting a rotation angle of the cloth feeding motor to obtain output information, i.e., feeding rotation information (S33) corresponding to the rotation angle when power is connected. The CPU employs a main coder used for detecting a rotation angle of the main motor to obtain output information, i.e., main shaft rotation information (S39); the CPU can determine a rotation angle, i.e., a target rotation angle (S43) of an output shaft of the main motor in synchronization position with the cloth feeding teeth according to the feeding rotation information and the main shaft rotation information; the CPU drives the main motor to the target rotation angle (S45).

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 for 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 is easy to sew various patterns. When the sewing machine uses different motors to drive the main shaft and the cloth feeding mechanism, it is necessary to ensure the synchronization of the driving of the main shaft and the driving of the cloth feeding mechanism. In the sewing machine disclosed in Japanese Patent Laid-Open No. 228276 of 1993, the timing to start feeding the cloth is determined based on the rotation speed and rotation angle of the main shaft. The sewing machine corrects the timing at which the feed starts based on the feed amount and the acceleration ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B69/10D05B69/00
Inventor 竹村徹
Owner BROTHER KOGYO KK
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