Yarn entanglement strength tester

摘要

A yarn entanglement strength tester includes first and second rolls that apply incrementally increasing elongation levels on a yarn in order to remove entanglements from the yarn. The yarn entanglement strength tester also includes a third roll, where the second and third rolls apply a constant tension on the yarn which enables optimum diameter measurements of the yarn by a camera. The camera captures images of diameters of the yarn after each of the incrementally increasing elongation levels is applied to the yarn. The yarn entanglement strength tester further includes a computing device that controls operation of the camera and the first, second, and third rolls, and determines an entanglement strength of the yarn based on the captured images of the diameters of the yarn after each of the incrementally increasing elongation levels is applied to the yarn.

主权项

1. A method comprising:
causing, by a device, a first roll and a second roll to apply a plurality of elongation levels on a first portion of a yarn provided between the first roll and the second roll,
each elongation level, of the plurality of elongation levels, being greater than a previous elongation level; receiving, by the device, a plurality of tension measurements associated with the first portion of the yarn, based on applying the plurality of elongation levels on the first portion of the yarn; determining, by the device, whether the plurality of elongation levels satisfy thresholds based on the plurality of tension measurements; adjusting, by the device, a roll speed of the first roll or the second roll when at least one of the plurality of elongation levels fails to satisfy at least one of the thresholds; causing, by the device, the second roll and a third roll to apply a constant tensile force on a second portion of the yarn provided between the second roll and the third roll; receiving, by the device, diameter measurement information associated with the second portion of the yarn based on applying the constant tensile force on the second portion of the yarn and based on applying the plurality of elongation levels on the first portion of the yarn; determining, by the device, a quantity of entanglements in the yarn, associated with each elongation level, of the plurality of elongation levels, based on the diameter measurement information; and determining, by the device, an entanglement strength of the yarn, associated with each elongation level, of the plurality of elongation levels, based on the quantity of entanglements in the yarn associated with each elongation level.