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Stitch length detecting method, stitch length detecting device, sewing machine and readable storage medium

A detection method and technology for sewing machines, which are applied to sewing machine components, needle holders for sewing machines, control devices for sewing machines, etc., can solve the problems of reduced detection accuracy, failure of photoelectric encoders, and inability to guarantee reliability, and achieve high reliability.

Active Publication Date: 2020-02-21
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The real-time detection of needle distance can be realized by means of photoelectric encoders, but in practical applications, photoelectric encoders are prone to failure due to environmental factors such as dust, and the detection accuracy will gradually decrease during use, and the reliability cannot be guaranteed.

Method used

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  • Stitch length detecting method, stitch length detecting device, sewing machine and readable storage medium
  • Stitch length detecting method, stitch length detecting device, sewing machine and readable storage medium
  • Stitch length detecting method, stitch length detecting device, sewing machine and readable storage medium

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Embodiment Construction

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly mounted on the other component or there may also be an intervening component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a co-existing centered component. When a component is said to be "fixed" to another component, it may be dir...

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Abstract

The invention provides a stitch length detecting method. The method includes: using a linear Hall element to detect the two extreme swing positions of a magnetic element, and acquiring extreme position voltage values corresponding to the two extreme swing positions; acquiring the angle difference between the two extreme position voltage values according to the two extreme position voltage values and the voltage-angle curve of the linear Hall element; determining the swing angle of a cloth feeding shaft according to the angle difference between the two extreme position voltage values, and calculating the stitch length corresponding to the current swing angle according to a preset relational expression. By the stitch length detecting method high in reliability, the real-time stitch length can be detected, and failure caused by the influence of environmental factors such as dust can be avoided.

Description

technical field [0001] The invention relates to the technical field of sewing machines, and in particular, to a needle distance detection method, a needle distance detection device, a sewing machine and a readable storage medium. Background technique [0002] In the process of garment processing, for the purpose of controlling the length of the braid and automatically adjusting the stitch length, it is necessary to obtain the actual stitch length value when the sewing machine is running. The real-time detection of stitch distance can be realized by methods such as photoelectric encoders, but in practical applications, photoelectric encoders are easily affected by environmental factors such as dust and fail, and the detection accuracy will gradually decrease during use, and the reliability cannot be guaranteed. SUMMARY OF THE INVENTION [0003] In view of this, it is necessary to provide a needle distance detection method, a needle distance detection device, a sewing machin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B27/22D05B55/12D05B69/20
CPCD05B27/22D05B55/12D05B69/20
Inventor 朱良华余保记符志诚徐永明
Owner JACK SEWING MASCH CO LTD