Method for measuring reel diameter and thickness of yarns on reel of air-covered yarn machine

Abstract

The invention relates to a method for measuring the reel diameter and thickness of yarns on a reel of an air-covered yarn machine. The method comprises the following steps: step 1, providing a rotating stand, wherein the rotating stand is provided with a first hinge point and a second hinge point which have a distance of R, and a connecting line of the first hinge point and the second hinge point is collinear with one straight line; step 2, providing a rotating angle measurer; step 3, mounting the reel on the second hinge point so as to ensure that the reel is tangential to the straight line and the reel and the straight line are tangential at a first tangential point, and measuring a rotating angle theta 0 of the rotating rack rotating around the first hinge point by use of the rotating angle measurer; step 4, calculating the diameter d0 (d0=2Rsintheta 0) of the reel; step 5, enabling a coil and the straight line to be tangential at a second tangential point, and measuring the rotating angle theta of the rotating rack rotating around the first hinge point by use of the rotating angle measurer; step 6, calculating the diameter d (d=2Rsin theta) of the coil; step 7, calculating the thickness, which is expressed in the specification, of the yarns wound on the reel. The method can be used for greatly improving the reel and yarn measurement precision and can be widely applied to various winding machines.

Description

technical field [0001] The invention relates to a method for measuring the diameter of the reel of an air-covered yarn machine and the thickness of the yarn on the reel. Background technique [0002] The air-covered yarn machine is a kind of yarn processing machine. It passes the spandex delivered from the spandex feeding device with a certain draft ratio and the untwisted filament (nylon / polyester DTY) through the air covering device in compressed air. Under the action of network wrapping, two or more fibers with different physical properties are intertwined to form a yarn—air-covered yarn. An important process in air wrapping is package. The formation of the package is composed of two parts: the winding mechanism and the traversing wire arrangement mechanism. Through the joint action of the two, the yarn can be laid on the surface of the reel according to certain rules and wound into a package with a certain shape and capacity. Cylindrical rolls. [0003] The winding me...

AI Technical Summary

Problems solved by technology

At present, the most commonly used method is to feedback and control the speed of the spindle shaft according to the change of the speed of the contact roller, but because the contact roller is driven by the friction of the spindle shaft, the speed control accuracy of the spindle shaft is not high

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