Device for testing network degree of network yarns

Abstract

The invention relates to a device for testing the network degree of network yarns. The device comprises a winding device, an unwinding device, a composite needle set, a tension testing device and a processor, wherein the winding device and the unwinding device are matched with each other so as to drive the network yarns to unwind in the direction of a straight line A, and the composite needle setand the tension testing device are distributed along the straight line A and located between the winding device and the unwinding device; the composite needle set includes a plurality of needles for piercing the network yarns during the unwinding process so as to enable bonded single yarns to be separated entirely; and the tension testing device is used for obtaining tension data of the network yarns during the unwinding process, the processor is connected with the tension testing device for analyzing the tension data of the network yarns to obtain the network degree of the network yarns. According to the device, the problem that a plurality of network points are missed when testing is carried out by a single needle in a conventional device is solved, so that the missing detection situation of network nodes in the network yarns is greatly reduced, the problem of error statistics of the network nodes caused by filament yarn filament torsion is solved, and accurate statistics on the network degree of the network yarns are achieved.

Description

technical field [0001] The invention belongs to the field of chemical fibers and relates to a device for testing the network degree of network yarns. Background technique [0002] During the spinning process of chemical raw materials, each filament is not a single filament but a multifilament composed of 15 to 100 very thin monofilaments. If the filaments are blown loose with compressed air during the spinning process, and they are twisted into network knots to form network filaments. The network degree is an important parameter to characterize the network thread, and for a specific network thread, the network degree also satisfies a specific range. In actual production, the network of the network yarn is often too large or too small, which undoubtedly has a great impact on the performance of the network yarn. If the network is too large, it will cause network spots on the surface of the final fabric, and if the network is too small It will lead to problems such as loose a...

AI Technical Summary

Problems solved by technology

Although this method saves time and effort compared with the manual test method and eliminates the influence of manual subjectivity, it will also miss the detection of network knots, resulting in a small test network degree, and it is very easy to detect during the winding and unwinding of the network wire. Inaccurate test results due to misrepresentation of network knots due to tension generated by twisted filaments in network filaments as they pass through a thin needle

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