Test device for physical parameters and mechanical properties of yarn

Abstract

The invention provides a test device for physical parameters and mechanical properties of a yarn, wherein a tension gauge and a linear guide are both fixed on the outer frame of the measuring device,the linear guide is coaxially disposed under the tension gauge, a sliding block can be slidably disposed on the linear guide linearly, both ends of the tested yarn are respectively fixed with the force measuring head on the tension gauge and the sliding block; and a laser measuring sensor is disposed on one side of the yarn and is rotatable about the yarn in the circumferential direction. The testdevice adjusts the position of the sliding block by computer-controlled screw on the linear guide, can accurately control the yarn state according to actual requirements, and adopts a laser sensor tomeasure the diameter with the diameter measurement of the yarn being an intensive point of the whole circumference so as to more accurately characterize the cross-sectional shape features and diameter value of the yarn, so that the obtained tensile modulus value is more accurate, the obtained diameter change value is more accurate, and the Poisson's ratio accuracy is also improved accordingly. The device has the advantages of simple structure and convenient operation, and is suitable for a wide range of promotion.

Description

technical field [0001] The invention relates to the technical field of measuring yarn properties, in particular to a testing device for yarn physical parameters and mechanical properties. Background technique [0002] In the production process of the textile industry, yarn, as the upstream material of textile processing, is often in a stretched state during the process. In recent years, the physical and mechanical properties of yarn have been a research hotspot and have been paid attention to frequently. Among them, the expression parameters of elasticity and viscosity such as yarn diameter, Poisson's ratio, and tensile modulus are important physical property parameters. In the analysis and research, the research process of the performance and quality of the fabric plays the role of a key parameter, and the accuracy of its value will also affect the accuracy of the follow-up research. [0003] At present, the tensile mechanical properties of yarn are mostly tested with sin...

AI Technical Summary

Problems solved by technology

However, the performance of the yarn will vary with the state of the process, and these parameters cannot be characterized by a static measurement

Furthermore, the acquisition of Poisson's ratio and diameter are all measured in a certain state or calculated through theoretical assumptions, which are quite different from the yarn properties in the actual process, resulting in insufficient accuracy in analysis and calculation.

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