Devices and methods for yarn quality monitoring
A technology of yarn quality and monitoring device, applied in the direction of measuring device, using optical device, textile testing, etc., can solve the problems of manual inspection, unrealistic, impossible to achieve automatic production, etc., and achieve the effect of low power
Pending Publication Date: 2020-09-15
彼得佩纳 +2
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Problems solved by technology
Since yarn is produced quickly and in high volumes, manual inspection by human inspectors is not feasible, rather impractical, and impossible to automate to the extent required for production
Method used
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[0065] It should be understood that the specific embodiments described and depicted below are provided by way of illustration, and not to limit the disclosed and claimed invention to such examples.
[0066] Embodiments of the invention are functionally related to yarn quality monitoring, eg for all yarns used in the textile industry.
[0067] figure 1 A yarn quality monitoring system in an exemplary arrangement is shown, wherein the primary light source 2 (first light source) directly illuminates the image sensor 3 such that the light propagates along the light path 100 . This is for example via a diffuser 5 and a focusing element 6 .
[0068] The longitudinally moving yarn 1 is stabilized by a guide element 10 (eg guided by spaced apart elements 10a and 10b which may be arranged for orienting or stabilizing the moving yarn 1 ). The yarn 1 is guided as an obstacle to the diffuse light from the light source 2 illuminating the image sensor 3 behind the yarn.
[0069] The seg...
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Abstract
Disclosed are methods of monitoring textile yarn quality and apparatuses for monitoring textile yarn quality. Moving textile yarn 1 is monitored for its quality to meet required criteria, e.g. evenness or presence of unwanted foreign fibers. Light illuminating by light sources 2 and / or 7 and an image sensor 3 are used. The yarn 1 is placed as an obstacle into the pathway 100 of one diffused 5 light 2, contours of the light being focused 6 for a sharp yarn contours image capture. The light 7 is reflected from the yarn 1 and propagates along a path 100 to the image sensor through diffraction element 8. Portion of reflected light is diffracted 8 and creates interference pattern. Remaining reflected light creates yarn image. Thus light 2 directly illuminates image sensor. Light 7 illuminates moving yarn 1 and light from light source 7 is reflected from the yarn and illuminates image sensor. The yarn diameter is determined by processing of the yarn contours image or yarn image. The color analysis of the yarn 1 is determined by processing of captured interference patterns. Further evaluation of yarn diameters is used for yarn evenness monitoring and further color analysis results evaluation is used for foreign fibers monitoring.
Description
technical field [0001] The present invention relates to methods and devices for diameter measurement and color inspection of linear textile structures such as yarns, threads, textile fibers and slivers. Background technique [0002] Yarns are fabric structures made by spinning relatively short fibrous materials into long continuous units. Raw cotton is used as one of many input materials for yarn production. Machine yarn is wound onto coils for storage and further processing. [0003] Yarn evenness and foreign fibers are important quality parameters in yarns. Yarn evenness refers to the variation in diameter along its length due to small variations in the diameter of the yarn along its length. There are many thick and thin spots along the length of the yarn. This affects the evenness of the yarn. [0004] "Foreign fibers" are the presence of foreign particles in the fabric yarns. Fabric yarns are usually white. The presence of foreign fibers interferes with the color ...
Claims
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IPC IPC(8): G01N21/89B65H63/06D01H13/32G01B11/10G01N33/36
CPCB65H63/065G01B11/105G01N33/365G01N21/8915B65H2701/31D01H13/22
Inventor 彼得·佩纳约瑟夫·苏斯卡翁德热·泽林卡
Owner 彼得佩纳