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Image testing method for chemical fibre thermal contraction rate and testing apparatus thereof

A technology for thermal shrinkage and image testing, applied in measuring devices, optical devices, textile testing, etc., can solve the problems of low measurement accuracy of thermal shrinkage of chemical fibers, and achieve improved reliability, accurate and reliable control, and improved weight. present effect

Inactive Publication Date: 2005-04-27
SHANGHAI LIPU APPLIED SCI TECH INST
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Problems solved by technology

[0005] In order to overcome the above-mentioned defects, the present invention provides an image testing method and testing device for the thermal shrinkage rate of chemical fibers to solve the problem of low measurement accuracy of the thermal shrinkage rate of chemical fibers in the prior art

Method used

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  • Image testing method for chemical fibre thermal contraction rate and testing apparatus thereof
  • Image testing method for chemical fibre thermal contraction rate and testing apparatus thereof
  • Image testing method for chemical fibre thermal contraction rate and testing apparatus thereof

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Embodiment Construction

[0029] Such as figure 1As shown, the present invention provides an image testing method for measuring the thermal shrinkage rate of chemical fibers and its testing device, which can respectively measure the length of a single fiber sample before and after heating, and divide the difference between the two lengths by the single fiber The thermal shrinkage rate of the single fiber sample can be obtained from the original length of the sample before heating. A kind of test method of chemical fiber heat shrinkage rate of the present invention is characterized in that it is realized by the following steps: first open the power switch of fiber heat shrinkage rate test device and computer to preheat for half an hour, and install the The upper holder 7 is a spring clip type structure, and one end is fixed on the top of the sample garden cylinder holder 4. When the spring is opened by hand toggling its extended head end, the tension clip type lower holder 8 can be hung with tweezers. ...

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Abstract

The present invention belongs to the field of textile measuring instrument, and is one kind image test method and apparatus for the heat shrinkage of chemical fiber. The measuring method includes taking images of single fiber samples hung to cylindrical frame with CCD camera to obtain the length change before and after heating, and calculating in computer the heat shrinkage of chemical fiber. The measuring apparatus includes stepped motor, turntable, positioning pin, sample cylinder, elevator, metering calibration block, upper spring clamp, lower tensile clamp, holding circular ring, CCD camera, pulse distributor, casing, computer, display and printer. The present invention has the advantages of reliable test result, high precision, simple instrument structure and low fault rate.

Description

technical field [0001] The invention belongs to the field of textile measuring instruments, and relates to an image test method and a test device for thermal shrinkage rate of chemical fibers, which are suitable for the quality control of chemical fiber factories and the inspection of fiber quality by textile enterprises and testing institutions. Background technique [0002] The thermal shrinkage rate of chemical fibers has a great influence on the quality of finished products. Due to the difference in fiber thermal stability, it will not only affect the dimensional stability of the finished product, but also cause adverse dyeing effects such as discoloration and color difference. Shrinkage occurs at the seam, which seriously affects the appearance quality of the product. Excessive shrinkage will also shorten the length and thicken the diameter of the sewing thread, which will affect the quality and cost of the manufactured product. [0003] The method of measuring fiber h...

Claims

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Application Information

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IPC IPC(8): G01B11/02G01N25/00G01N33/36
Inventor 严文源李汝勤凌峥高军施德梁徐国良
Owner SHANGHAI LIPU APPLIED SCI TECH INST
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