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sewing machine

A sewing machine and defective technology, applied in sewing machine components, sewing equipment, sewing machine control devices, etc., can solve the problems of inability to sew poor notification, difficult to handle properly, and poor thread take-up.

Active Publication Date: 2022-03-29
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the sewing process, besides the broken thread, there are also skipped stitches, poor thread collection, etc.
The above sewing device cannot notify of sewing defects other than thread breakage
Therefore, it is difficult for the operator to perform appropriate handling according to the type of sewing failure.

Method used

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Experimental program
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Embodiment Construction

[0028] A sewing machine 1 according to an embodiment of the present invention will be described. The following description uses left and right, front and rear, and up and down indicated by arrows in the figure.

[0029] refer to Figure 1 ~ Figure 3 , the structure of the sewing machine 1 will be described. The sewing machine 1 has a table 9 and a sewing device 100 . An opening 9A is provided on the upper surface of the table 9 . The right front portion of the workbench 9 has a panel portion 220 . The sewing device 100 has a base 2 , a pillar 3 and an arm 4 . The stand part 2 is fitted in the opening 9A, and the stand part 2 extends in the left-right direction. The machine base portion 2 is equipped with a needle plate 7 on the upper surface. The operator places the cloth on the machine base 2 and the needle plate 7 . The needle plate 7 has a needle hole 8 and a cloth feeding tooth hole 14 . The pin hole 8 is circular in plan view. The cloth feed tooth hole 14 has a l...

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PUM

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Abstract

The present invention relates to a sewing machine capable of notifying by distinguishing the types of poor sewing. The sewing machine acquires the tension of the upper thread from the detection result of the thread tension detection mechanism. The sewing machine judges whether or not sewing failure has occurred based on the obtained tension of the upper thread. When the sewing machine determines that poor sewing has occurred, the sewing machine determines the poor sewing that has occurred. When the identified poor sewing includes any one of thread breakage, skipped stitches, and poor thread take-up, the sewing machine notifies each one individually according to the type of sewing failure.

Description

technical field [0001] The present invention relates to a sewing machine. Background technique [0002] Japanese Patent Publication No. 132188 of 1995 discloses a sewing device capable of detecting and notifying thread breakage. When the tension of the upper thread changes, the thread take-up spring comes into contact with or moves away from the stopper pin. During the sewing process, the upper thread will produce periodic tension changes. When the thread breaks, the tension of the upper thread will not change. At this time, the thread take-up spring continues to be in contact with the limit pin. At this time, the sewing device causes the display unit to display the stitch in which the thread breakage occurred in the multi-needle sewing. [0003] In addition to thread breakage, poor sewing also includes skipped stitches and poor thread collection during the sewing process. The above-mentioned sewing device cannot report sewing defects other than thread breakage. Theref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B69/36
CPCD05B69/36
Inventor 今村雄介近藤宏史
Owner BROTHER KOGYO KK