SU737778A1 - Method of measuring the length of filament-like moving article - Google Patents

Description

(54) METHOD OF MEASUREMENT OF LENGTHS MOVING

THIS PRODUCT AND DEVICE

FOR ITS IMPLEMENTATION The invention relates to measuring technique and can be used to measure the length of a moving thread-like product, for example, synthetic fiber yarns, ropes, cables, wires. A known method for measuring the length of a moving thread-like product is that the product is rolled on the surface of the rolling rollers, the number of revolutions of the rollers is measured and the measured length 1 is judged by the results. A device for measuring the length of a moving thread-bearing product containing rolling rollers is known the number of revolutions of the rollers, and the recording unit 1. The disadvantage of the known method and device is the low measurement accuracy in the case when the thickness of the product is variable. Most closely related to the technical essence and the achieved result to the invention is a method for measuring the length of a moving thread-like product, which means that the product is rolled between roll-in rollers, the number of revolutions of the rollers is measured and the measured length 2 is measured according to the results. the method is implemented using a device containing rolling rollers, roller speed counters and a reference unit 2. A disadvantage of the methods and devices is the low measurement accuracy due to the presence of a slal yvani flow forming between the rollers. The purpose of the invention is to improve the accuracy of measuring the length of the product. This goal in the method is achieved by rolling the product in such a way that it consistently covers the rolling rollers of the eight, compares the revolutions of the rollers and, using the data obtained, corrects the measurement results depending on the change in the thickness of the product. In the device, the goal is achieved by the fact that it is equipped with a correction unit through the thickness of the product, including a serially connected synchronizer and a comparator unit, the inputs of which are connected to the outputs of the counters, and the ai output to the input of the reference node.

In order to increase the sensitivity, the diameters of the rolling rollers are selected within the ratio of 1: (5-100).

The drawing shows a block diagram of a device for measuring the length of a moving filament article.

The device contains rolling rollers

1 and 2, counters 3 and 4 turns of rolling rollers 1 and 2, scaling unit 5, reference unit 6 and thickness correction unit 7 of product 8, including synchronizer 9 and comparison circuit 10, Reference unit 6 includes comparison unit 11 and indicator 12 Speed the rolling roller 2 is kept constant.

The dryness of the method is as follows.

The product 8 is rolled between the rolling rollers 1 and 2 so that it is "eight" consistently covered by them, measured by the counters 3 and 4 of the number of revolutions of the rollers 1 and 2, these data are compared in the comparison circuit 10 and the resulting difference is used to adjust the length of the product. When the product covers the surfaces of the rolling rollers in series, the thickness of the product influences the number of revolutions of the rolling roller 1. The number of revolutions of rollers 2 and 1 is obtained, and information about the change in the thickness of the product is obtained.

The described device operates as follows.

When consistently rolling products on the surface of the rolling rollers 1 and

2 pulses from the counters 3 and 4 are fed to the comparison circuit 10 of the correction block 7.

The operation of the comparison circuit 10 is determined by the synchronizer 9, the mode of operation of which is determined depending on the ratio of the diameters of the rolling rollers 1 and 2, the magnitude of the scaling unit 5, the nominal thickness of the measured product and the number of revolutions of the roller 2.

At the output of the comparison circuit 10, the difference in revolutions of the rollers 1 and 2 is obtained, containing an estimate of the changes in the thickness of the product. 3ta difference is applied to compare unit 11

737778

a reference unit 6 for adjusting the length of the item to be measured. The sensitivity of the device to measuring the thickness of the product when choosing the ratio of the diameters of the rollers 1: (5-100) increases about 260 times.

Claims (3)

Invention Formula G. Method of measuring the length of the moving o a thread-like product, consisting in that the product is rolled between roll-in rollers, the number of revolutions of the rollers is measured, and the results are judged on the measured length, characterized in that, in order to improve the measurement accuracy, the product is rolled so that it is consistent the eight covers the rolling rollers, compare the revolutions of the rollers and, according to the data obtained, correct the measurement results depending on the change in the thickness of the product. 2. An apparatus for carrying out the method according to claim 1, comprising rolling rollers, roller speed counters and a reference unit, characterized in that, in order to improve the measurement accuracy, it is provided with an article thickness correction unit including serially connected synchronizer and comparison unit, the inputs of which are connected to the outputs of the counters, and the output - to the input of the reference node. 0 3. The device according to claim 2, characterized in that, in order to increase the sensitivity, the diameters of the rolling rollers are selected within a ratio of 1: (5-100). Sources of information taken into account in the examination 1. Patent of Germany No. 859807, cl. 42 B 10, 1952.. 40 2. USSR author's certificate No. 336494, cl. G 01 B 5/04, 1970 (prototype).