Fabric suspension three-dimensional tester based on grating stripe method

Abstract

The fabric drape three-dimensional tester based on the grating stripe method is mainly composed of a main drive system, a lifting system, an optical system, and an image acquisition system. The sample rotation stepping motor (5) controls the rotation of the rotating platform (17), the lifting platform stepping motor (7) controls the lifting platform (16) to move up and down, and the stepping motor (11) controls the annular reflective cone surface (14) up and down move. The astigmatism emitted by the point light source (6) is converted into parallel light by the annular paraboloid (8), which passes through two grating templates (9) and is reflected by the annular reflective cone (14) at an angle of 45°, and finally on the surface of the tested fabric. The three-dimensional surface forms well-defined and uniform light and dark grating stripes. The image collector (21) directly acquires the two-dimensional contour map of the sample, and then the three-dimensional contour surface of the fabric is obtained through computer processing. It has a wide application range, convenient operation, fast measurement speed and can realize the integrated dynamic and static measurement of the whole fabric, and the stepless speed regulation realizes the continuity of the dynamic and static test of the drape.

Description

Technical field: [0001] The invention is a fabric drape tester, in particular a fabric drape three-dimensional tester based on a grating stripe method, which is suitable for three-dimensional dynamic and static drape test of various types of fabrics. Background technique: [0002] Before the present invention was made, there were various forms of drape testers abroad, and my country also had a drape tester and corresponding test method standards. However, these instruments usually can only test the static drape performance of the fabric, and can only measure the two-dimensional shape of the fabric. The test index is single and cannot reflect the style of the fabric in many ways, so the application in our country is also relatively narrow. With the advancement of science and technology and the improvement of people's living standards, and the advent of new fibers and fabrics, people not only require the fabric to have good static performance, but also require the fabric to ha...

AI Technical Summary

Problems solved by technology

However, in the application, it is found that the drape coefficient has a great dependence on the drape shape of the fabric, and YG811 can only realize the static measurement of the fabric, and cannot fully reflect the drape characteristics of the fabric; YG811 uses the size of the shading area of ​​the fabric sample to measure To calculate the drape coefficient of the fabric, one of the important assumptions is that the fabric is an opaque black body, but for some thin fabrics, this assumption is not suitable, because part of the light passes through the fabric, so it is detected on the receiver The received light intensity is too large, so the measured drape coefficient is too large

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