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Method and device for controlling residual thread length of bobbin of sewing machine

A control device and sewing machine technology, which is applied in the direction of bobbin winding, sewing machine components, sewing equipment, etc. in the sewing machine, can solve the problems affecting the quality of clothing, etc., and achieve the effect of high degree of automation and high judgment accuracy

Inactive Publication Date: 2016-09-28
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the above situation occurs, there will be defective products, which will affect the quality of clothing

Method used

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  • Method and device for controlling residual thread length of bobbin of sewing machine
  • Method and device for controlling residual thread length of bobbin of sewing machine
  • Method and device for controlling residual thread length of bobbin of sewing machine

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Embodiment Construction

[0024] The present invention will be further described below with specific embodiment, see figure 1 —4:

[0025] A device for controlling the amount of remaining thread in a sewing machine bobbin, comprising a bobbin 1, an automatic winding amount control device and a detection device for the number of unwinding stitches, a code 2 is arranged on one side or both sides of the bobbin 1, and the automatic winding amount The control device obtains the winding number of the bobbin 1 according to the signal returned by the code 2 on the measuring bobbin 1. 1, and the controller judges whether the length of the line segment required by the next sewing process is satisfied according to the difference between the number of coils unwound and the number of unwound coils of bobbin 1 during the sewing process; if it is satisfied, the sewing machine continues to work; if If it is not satisfied, the controller will send out an alarm to remind the sewing machine operator to change the bobbin...

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Abstract

The invention belongs to the technical field of sewing machines, and particularly refers to a method and device for controlling the remaining thread amount of a sewing machine bobbin. Codes are arranged on one side or both sides of the bobbin, and an automatic winding amount control device measures the code on the bobbin according to the code. The returned signal obtains the winding number of the bobbin, and the unwinding number detecting device obtains the unwinding number of the bobbin in the sewing process according to the signal returned by measuring the code on the bobbin, and the number of unwinding coils of the bobbin is obtained by the controller according to the number of unwinding coils and In the sewing process, the difference in the number of unwinding coils of the bobbin judges whether the length of the line segment required by the next sewing process is met; the present invention measures the number of winding coils and the number of unwinding coils of the bobbin in the sewing process respectively by two sensors, Then the controller judges whether the remaining thread meets the length of the thread segment required by the next sewing process through calculation. The operator does not need to worry about the remaining length of the bottom thread, and avoids empty needles or needle stoppages due to failure to replace the bobbin in time. The effect on the fabric caused by continuing to sew after changing the bobbin.

Description

Technical field: [0001] The invention belongs to the technical field of sewing machines, in particular to a method and a device for controlling the remaining thread amount of a bobbin of a sewing machine. Background technique: [0002] In the process of garment sewing, it should be avoided that there is no bottom line in the middle of a sewing process, resulting in empty stitches. Especially when making high-grade clothes, especially leather materials, it is not allowed to sew empty needles, nor does it allow a section of the sewing process to stop the needle and change the bobbin to continue sewing. If the above situation occurs, there will be defective products, which will affect the quality of clothing. Invention content: [0003] The purpose of the present invention is to provide a device for controlling the remaining thread amount of a sewing machine bobbin that can automatically calculate whether the bobbin needs to be replaced. [0004] The present invention is ac...

Claims

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Application Information

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IPC IPC(8): D05B59/02
CPCD05B59/02
Inventor 董海瑞黄赞赞万汉亮潘建国
Owner JACK SEWING MASCH CO LTD
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