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Method and device for calculating residual length of under thread

A calculation method and bottom thread technology, which are applied in the control device for sewing machines, bobbin winding in sewing machines, textiles and papermaking, etc., can solve the problems of increasing equipment costs and calculation errors

Inactive Publication Date: 2020-02-07
CHEE SIANG IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the method of only using the number of needles to calculate the amount of bobbin thread used must ensure that the needle pitch of each needle and the thickness of the material to be sewn must be consistent, otherwise errors will occur in the calculation; and the method of using sensors to monitor the coil, except In addition to installing the sensor on the sewing machine table, special parts for the sensor must be made, which increases the cost of the equipment

Method used

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  • Method and device for calculating residual length of under thread
  • Method and device for calculating residual length of under thread
  • Method and device for calculating residual length of under thread

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings, and the advantages and characteristics of the present invention will become clearer along with the description.

[0044] Please refer to Figure 1 to Figure 2 As shown, the calculation method of the remaining length of the bobbin thread provided by the present invention, in one embodiment, is through a sewing machine 10 that can automatically perform sewing work according to the setting and a connection (or built-in) in the sewing machine 10 computing device 20 to execute.

[0045] First of all, regarding the part of the sewing machine 10, the present invention is not particularly limited to the sewing machine 10, but can be applied to various types of sewing machines; regarding the part of the computing device 20: as figure 1 As shown, in this embodiment, the computing device 20 connected to the sewing machine 10 includes an input device 21 , a mem...

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Abstract

The invention relates to a method and device for calculating residual length of an under thread, which are applied to a sewing machine capable of automatically carrying out sewing operation. The method includes generating a first judgment value and a second judgment value by acquiring minimum residual length of an under thread, total length of the under thread, next sewing length required for sewing a default pattern and current state length; according to whether the first judgment value is greater than the second judgment value, generating a reminding message or updating the value of the current state length in order for use in next sewing operation. A user can know when a bobbin needs to be replaced during application of the automated sewing machine; mounting sensors on the sewing machine is not required.

Description

technical field [0001] The invention relates to a method and a device for calculating the remaining length of the bobbin thread, in particular to an automatic sewing machine device which can automatically replace bobbins. Background technique [0002] Just like the CNC processing machines used in the industrial field, in the field of sewing machines, sewing machines that can automatically sew according to the graphic trajectory set by the user, stop the needle or cut the thread have been developed. In such sewing machines, how to prevent The bobbin thread used in the automatic sewing process is exhausted, resulting in scrapped products or time-consuming repairs, which must be solved. [0003] In order to solve the above-mentioned problems, the methods adopted by the automatic sewing machines currently on the market include the method of using the number of sewing stitches to calculate the amount of bottom thread used, and the use of sensors installed on the sewing machine to...

Claims

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Application Information

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IPC IPC(8): D05B59/02D05B69/00
CPCD05B59/02D05B69/00D05D2305/34
Inventor 陈旭辉
Owner CHEE SIANG IND CO LTD