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Broken line detection system and method

A technology of wire breakage detection and detection device, which is applied to wire breakage detectors, textiles, papermaking, sewing equipment, etc., to achieve the effect of high detection accuracy and good stability

Active Publication Date: 2022-06-10
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention mainly solves the problem of low accuracy and instability of thread breakage detection of sewing machines in the prior art; it provides a thread breakage detection system and method, which simultaneously detects stitches of machine needles and shuttles, and has higher detection accuracy , better stability

Method used

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  • Broken line detection system and method
  • Broken line detection system and method
  • Broken line detection system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The present invention also provides a disconnection detection method, comprising the following steps:

[0031] Embodiment two:

[0032] The needle suture passes through the first through hole of the base body, the second through hole of the first electrode plate and the third through hole of the second capacitor plate, and when the needle reciprocates up and down, it drives the needle suture to move up and down , the sewing thread of the machine needle is connected with the second through hole, the friction force is generated when the thread is hooked, and the generated friction force overcomes the elastic force and does work to drive the first plate to move downward, so that the capacitance value changes. When the thread is taken up, the spring force By doing work, the first capacitor plate is far away from the second capacitor plate, and the capacitance value further changes, and then a signal pulse is generated to realize the broken thread detection of the needle sut...

Embodiment 2

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Abstract

The invention discloses a broken thread detection system and method, and the system comprises a first detection device which is used for detecting the change of the friction force of a sewing thread on a machine needle, is disposed in a housing of a sewing machine, and is connected with a broken thread judgment unit; the second detection device is used for detecting the tension change of the sewing thread on the shuttle hook, is mounted in the base of the sewing machine and is connected with the thread breakage judgment unit; the broken thread judging unit is used for judging the state of a sewing thread according to a detection result by acquiring the working period T of a cam for driving a machine needle and a shuttle hook to act and carrying out broken thread detection once in each working period T; the first detection device and the second detection device are arranged to achieve simultaneous detection of the machine needle sewing thread and the shuttle hook sewing thread, the change of tension and friction force of the sewing thread is detected, then thread breakage detection of the sewing thread is achieved, and compared with detection of an existing photoelectric sensor, the detection accuracy is higher, and stability is better.

Description

technical field [0001] The invention relates to the technical field of sewing machines, in particular to a thread break detection system and method. Background technique [0002] With the continuous update and development of the clothing industry and people's constant pursuit of clothing quality, sewing machines are more and more widely used in various fields of clothing. The thread breakage often occurs during the use of the sewing machine. If the turner fails to find the thread breakage in time and continues to sew, it is very likely that the thread winding phenomenon will occur at the position of the threading cam assembly. It is notoriously time consuming to deal with wire wrap once it has occurred at the strike cam assembly location. [0003] The sewing machine has two methods of chain stitching and lock stitching when sewing. Chain stitching is not particularly strong. After one end of the thread is loosened, it is easy to cause the entire sewing to loosen. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B51/00
CPCD05B51/00
Inventor 徐仙国潘建国崔林涛
Owner JACK SEWING MASCH CO LTD
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