SU934206A2 - Device for measuring moving filamentary article length - Google Patents

Description

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The invention relates to a measuring technique, namely, devices for measuring the length of a moving thread-like product.

According to the main auth. No. 737778, a device for measuring the length of a moving thread-like product is known, which contains rolling rollers, roller speed counters, a reference unit, a product thickness correction unit that includes successively connected synchronizer and a comparison unit, the inputs of each are connected to the counter outputs, and the output is connected to the node input counting fij.

A disadvantage of the known device is the impossibility of simultaneously measuring the length and the current value of a Dymeter or Totchina of a product.

The purpose of the invention is to expand the functionality.

This goal is achieved by the fact that the device is equipped with a control unit, an indicator of thickness and parallel-connected memory blocks, the inputs and outputs of which are connected through the first and second switches to the output of one of the counters and to the input of the comparison unit, the second output of the synchronizer is connected to the input of the control unit, the outputs of which are connected to the control inputs of the switches, and the thickness indicator is connected to the output of the comparison unit.

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The drawing shows the block diagram of the device.

The device contains rolling rollers 1 and 2, counters 3 and revolutions of rollers 1 and 2, scaling unit 5, cutout unit 6, length correction unit 7, including a synchronizer .8 connected in series, and a comparison unit E connected to the meter outputs

Claims (2)

20 3 and 4, the node 6 of the reference length includes the second comparison unit 10 and the length indicator 11, the inputs of the second comparison unit 10 are connected to the output 39 of the comparison unit 9 and one of the counters, for example 3, the first switch 12 is connected between the output of the counter 3 and parallel-connected blocks 13 and 1 of the memory, to the control input of the switch 12 is connected, the output of the control unit 15, also connected to the control input of the switch 16, the output of which is connected to the input of the comparison unit 9, to the output of which the product thickness indicator 17 is connected. The device works as follows. When the product is rolled over the surface of the rolling rollers 1 and 2 successively, the pulses from the counters L arrive at the comparison unit 9. The operation of the comparator unit 9 and the control unit 15 with the switches 12 and 16 is determined by the synchronizer 8. The operation mode of the synchronizer 8 is set depending on the ratio of the diameters of the rolling rollers 1 and 2, the scaling value of the unit 5, the nominal thickness of the measured product and the speed of the roller 2. At the same time, the pulses from the counter 3 are transmitted through the switch 12 to the memory block 13, where the current pulses are memorized, which are proportional to the elementary parts of the length of the moving article. At the end of the passage of the product around the perimeter of the rolling roller 1, the synchronizer 8 operates, and using the control unit 15 and the switch 12 flips the output of the counter 3 to the unit 14, where the current pulses are proportional to the next elementary sections of the moving product rolled around the perimeter of the roller 1. With the same impulse of the synchronizer 8, the resolution is taken to measure and compare the current impulses proportional to the elementary parts of the length of the moving article at the moment of the beginning tim product flow forming surface roller 2. In ztom ELAPSED k output directly connected to comparing unit 9, which also receives synchronization pulses through the commutator 13 with a block of memory. In block 9 6 comparison, the current pulses are subtracted from the rolling rollers 1 and 2. At the output of the comparison block 9, a signal appears proportional to the current thickness changes; See the whole product displayed on the thickness indicator 17. With the passage of the product | m | The next section of the rolling roller 2 triggers the synchronizer 8, which, through the control unit 15 and the switch 16, connects the output of the AND block to the input of the comparison block 9, where n | 5 is the next subtraction of the signals coming from the counters 3 and j, and the subsequent display of their difference Indicator 17. In the course of measurement, in block 9 of comparison, the difference in revolutions is recorded, received directly from the outputs of the counters and 3, and fed to block 10 of comparison of the node 6 of reference to correct the length of the measured product. The indication of the length of the reading is measured in the indicator 11. The proposed device will simultaneously measure the thickness and length of the moving thread-like product. The invention The device for measuring the length of a moving thread-like product according to the author. No. 737778, that is, in order to expand its functionality, it is equipped with a control unit, a thickness indicator and parallel-connected memory blocks, whose inputs and outputs are connected through the first and second switches to the output of one from the counters and to the input of the comparison unit, the second output of the synchronizer is connected to the input of the control unit, the outputs of which are connected to the control inputs of the switches, and the thickness indicator is connected to the output of the comparison unit. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 737778, cl. 3 G 01 B 7/0, 1978 (prototype).