Anti-cloth-cutting device used for sewing machine and control method of anti-cloth-cutting device

A sewing machine and anti-cutting technology, which is applied in the sewing machine to cut off the thread mechanism, sewing machine components, sewing equipment, etc., can solve the problems of fabric damage, fabric not sticking tightly, warping, etc.

Active Publication Date: 2017-07-21
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the sewing machine is conveying the fabric, the fabric may not be close to the sewing table of the sewing machine, but may be warped.
At this time, the fabric may not effectively block the corresponding fabric detection sensor, so that the sewing machine thinks that the fabric has left, that is, the thread is trimmed after execution. At this time, the fabric is often cut, causing damage to the sewn fabric.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Anti-cloth-cutting device used for sewing machine and control method of anti-cloth-cutting device
  • Anti-cloth-cutting device used for sewing machine and control method of anti-cloth-cutting device

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Embodiment Construction

[0022] Specific embodiments of the present invention will be described in further detail below based on the drawings. It should be understood that the specific embodiments described here are merely examples and are not intended to limit the protection scope of the present invention.

[0023] See figure 1 , Which is a functional block diagram of a cloth cut prevention device 100 for sewing machines provided by the present invention. First of all, it should be noted that, as a sewing machine, it must include a sewing table 10 for placing the fabric to be sewn, a sewing machine 20 for sewing using needles, and at least two first control signals for providing control signals. , The second fabric detection sensor. The structure and working principle of the sewing table 10 and the machine head 20 are well known to those skilled in the art and will not be described in detail. figure 1 Only its schematic diagram is shown in. In this embodiment, the sewing machine includes three fabric ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides an anti-cloth-cutting device used for a sewing machine and a control method of the anti-cloth-cutting device. The device includes a data acquisition module, a protection threshold setting module, a sewing needle counting and timekeeping module, a judging module and a post-trimming execution module, wherein the data acquisition module is electrically connected with a first cloth detection sensor and a second cloth detection sensor. The post-trimming execution module is used for executing post-trimming when the data acquisition module receives a control signal output after the second cloth detection sensor outputs a signal and a control signal output by the judging module. According to the device and the method, only when the control signal output after the second cloth detection sensor outputs the signal and the control signal output by the judging module are received by the data acquisition module, can the post-trimming execution module execute post-trimming so that it can be ensured that well-sewn cloth is avoided from being cut by mistakes and whether the cloth becomes warped or is folded does not need to be worried about.

Description

Technical field [0001] The invention relates to the field of sewing machines, in particular to a cut-proof cloth device for sewing machines and a control method thereof. Background technique [0002] In the process of sewing fabric with an industrial sewing machine, or after sewing, it is often necessary to perform automatic thread trimming. Thread trimming is generally divided into front trimming and post trimming. Front trimming refers to trimming the thread at the front end of the fabric at the beginning of sewing, and post trimming refers to trimming the thread at the end of the fabric at the end of sewing. In order to realize the automation of the industrial sewing machine, the aforementioned front and rear thread trimming have also been automated. For example, the patent application number is 201410475488, and the patent application titled Sewing Machine and Automatic Thread Trimming Device discloses a sewing machine with an automatic thread trimming device. The sewing ma...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B65/04
Inventor 朱良华徐永明何礼会
Owner JACK SEWING MASCH CO LTD
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