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Embroidery machine broken thread detecting method and system

A technology for thread breakage detection and embroidery machines, which is applied in embroidery machines, embroidery machine mechanisms, textiles and papermaking, etc. It can solve the problems that the grating module cannot alarm normally, swings back and forth, accuracy and precision need to be improved, etc., to achieve Low cost, timely fault alarm and long service life

Active Publication Date: 2019-07-19
ZHEJIANG YUELONG SEWING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual application process, it is found that after the bottom thread is broken, the grating sheet will not only stop rotating. When the embroidery material is thick cloth and thick thread, the grating sheet will also swing back and forth after the bottom thread is broken. There will still be signals. At this time, the grating module of the above scheme cannot normally alarm, and there will be some mistakes when the signal on-off detection of the thread take-up spring is assisted. Therefore, the accuracy and precision of the detection need to be improved.

Method used

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  • Embroidery machine broken thread detecting method and system
  • Embroidery machine broken thread detecting method and system
  • Embroidery machine broken thread detecting method and system

Examples

Experimental program
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Embodiment 1

[0035] like figure 1 As shown, the present embodiment provides a method for detecting thread breakage of an embroidery machine, and the method includes the following steps:

[0036] S10: respectively collect the rotation information of a preset distance on the wire wheel and convert it into a first pulse signal and a second pulse signal before transmitting, and the first pulse signal and the second pulse signal are in an orthogonal relationship The thread passing wheel is a component on the thread clamp panel of the embroidery machine head. After the embroidery thread comes out of the thread clamp, it passes through the thread hook and wraps around the rolling sleeve to the thread passing wheel, and then passes through the thread nail to the lower thread clamp.

[0037] In this step, a grating sheet can be arranged at the shaft end of each thread-passing wheel installation shaft on the back of the tensioner panel, and the grating sheet is provided with a plurality of grating h...

Embodiment 2

[0043] like figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the following steps are also included between the step S10 and the step S20:

[0044] S11: Perform frequency quadrupling processing after integrating the first pulse signal and the second pulse signal. That is, before step S20 is executed, the pulse signal is first integrated and quadrupled, and the signal processor receives and analyzes the up and down counting signals generated after the quadrupling; the pulse signal is quadrupled or even more, which can improve the response capability , help to judge disconnection more quickly, issue abnormal notification, and improve the sensitivity of disconnection detection.

[0045] Preferably, before the step S10, it also includes:

[0046] S01: Obtain the needle position information of the embroidery machine currently working, and judge whether to power on the corresponding device to perform step S10. Referring to the description in Embod...

Embodiment 3

[0050] The difference between this embodiment and Embodiment 1 is that step S20 described in this embodiment includes:

[0051] When the sequence of receiving the first pulse signal and the second pulse signal changes, it is judged that the wire wheel is reversed, and a reverse signal is output; when the first pulse signal and / or the When the second pulse signal is used, it is judged that the wire wheel is stalled, and the stall signal is output; when the frequency of the first pulse signal and / or the second pulse signal is lower than the difference between the corresponding pulse frequency at the current speed, the difference exceeds one standard deviation , output low-speed signal;

[0052] After the step S20, the following steps are also included:

[0053] S30: receiving the reverse signal and sending an alarm notification of the wire wheel reverse rotation; receiving the stop signal and sending an alarm notification of the wire wheel stalling; receiving the low speed sign...

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Abstract

The invention discloses an embroidery machine broken thread detecting method and system. The method includes the steps of S10, collecting rotating information of a thread passing wheel at the intervalof a preset distance, and converting the rotating information into a first pulse signal and a second pulse signal to be transmitted, wherein the first pulse signal and the second pulse signal are inthe orthogonal relationship; S20, receiving and analyzing the first pulse signal and the second pulse signal, judging the reverse rotation of the thread passing wheel and outputting an abnormal signalwhen the receiving sequence of the first pulse signal and the second pulse signal changes, judging the rotation stop of the thread passing wheel and output an abnormal signal when the first pulse signal and / or the second pulse signal are / is not received, and outputting an abnormal signal when the difference value of the frequency of the first pulse signal and / or the second pulse signal and the corresponding pulse frequency at the current rotating speed exceeds the standard difference value. The broken thread detecting accuracy is high, precision is high, manufacturing is simple, and cost is low.

Description

technical field [0001] The invention relates to the technical field of thread break detection, in particular to a thread break detection method and system for an embroidery machine. Background technique [0002] During the working process of the embroidery machine, the bottom thread and the upper thread need to be detected in real time. If the bottom thread or the upper thread is broken or wireless and other special circumstances, continuing to embroider will affect the product quality. It is necessary to timely feedback the broken thread information through the detection device. To the main control system of the machine, the machine will report an error and stop, which is convenient for the operator to carry out subsequent related operations. Among them, the detection of whether the upper thread is broken is relatively mature and has high accuracy, while the detection of whether the bottom thread is broken is relatively difficult and the accuracy is not high. [0003] At pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05C13/02
CPCD05C13/02
Inventor 陈天池陈天龙张汉苗郑邓飞
Owner ZHEJIANG YUELONG SEWING EQUIP
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