Sewing machine and control method of sewing machine
A control method and sewing machine technology, applied in the direction of sewing machine control devices, sewing machine components, sewing equipment, etc., can solve the problems of being unable to detect the abnormality of the main motor, and achieve the effect of detecting abnormalities
Inactive Publication Date: 2016-01-20
BROTHER KOGYO KK
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, although the conventional drive control device can detect the abnormality of the main motor during the startup operation period, it may not be able to detect the abnormality of the main motor during the normal operation period.
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] One embodiment of the present invention will be described with reference to the drawings. In the following description, up and down, left and right, and front and rear indicated by arrows in the figure are used. refer to figure 1 The overall structure of the sewing machine 1 will be described. The sewing machine 1 has a sewing machine main body 2 . The sewing machine main body 2 has a base portion 3 , a pillar portion 4 and an arm portion 5 . The stand portion 3 extends in the left-right direction. The upper surface of the base part 3 is a plane. The base part 3 is attached to a table (illustration omitted). The pillar portion 4 extends upward from the right end of the base portion 3 . The arm portion 5 extends leftward from the upper end of the pillar portion 4 . The arm portion 5 faces the upper surface of the base portion 3 . The arm part 5 has a needle bar 7 at the left end. Needle bar 7 is equipped with organic needle 8 at the lower end. Needle bar 7 acc...
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
Login to View More PUM
Login to View More Abstract
The invention provides a sewing machine and a controlling method thereof capable of detecting abnormity of a main electromotor during normal operation. The sewing machine comprises the main electromotor and a current value detecting portion. The main electromotor enables a main shaft to rotate. The current value detecting portion is used for detecting current value of the main electromotor. The sewing machine carries out sewing operation by controlling rotation of the main electromotor and comprises a current value obtaining portion, a calculating portion, an accumulated value determining portion and a first controlling portion. The current value obtaining portion is used for obtaining current valve (S4) detected by a current value detecting portion. The calculating portion is used for calculating accumulated value (S5) by means of current value obtained from the current value obtaining portion and in the most recent prescribed period. The accumulated value determining portion is used for determining whether accumulated value calculated by the calculating portion is greater than threshold value (S6, S7) or not. When the accumulated value determining portion determines accumulated value to be greater than threshold value (S6:yes, S7:no), the first controlling portion stops to supply electricity (S14) to the main electromotor .
Description
technical field [0001] The invention relates to a sewing machine and a control method for the sewing machine. Background technique [0002] A conventional sewing machine has a mechanism capable of detecting an abnormality of the main motor. The main motor rotates the main shaft. An abnormality of the main motor is, for example, a sudden rise in temperature of the main motor due to the flow of a large load current. If the main motor continues to be driven with a large load current flowing, the main motor may burn out and fail to operate. The drive control device for a sewing machine disclosed in Japanese Patent Laid-Open No. 102914 of 2005 can detect the temperature and load current value (hereinafter referred to as current value) of a main motor. During the start-up operation, when the load current exceeds the threshold value, the drive control device stops the main motor. The start-up operation period is a predetermined period immediately after the main motor starts dri...
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
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): D05B69/36
Inventor 伊藤和久
Owner BROTHER KOGYO KK