SU990356A1 - Apparatus for monitoring strip welded seam position in continuous unit for producing rolled stock - Google Patents

Description

one

The invention relates to metallurgical production and automation, and is intended for tracking metal, for example, welds on continuous etching units, continuous mills of endless rolling, continuous strip finishing units.

A device for controlling the position of the strip welds on a continuous-wave is known. The unit contains two pulse sensors connected with rollers mounted on a shuffle, ayush, a strip, and the output via control units with pulse counters 1. Such a device allows detecting the position of the weld relative to the shears, unit with a variable band margin in a loopback device, but can only be used when it is open, and the strip length in the tracking section is longer than the distance between two adjacent welds.

The closest to the invention on technical dryness and the achieved positive effect is a device for monitoring the position of strip welds in a continuous cold rolling mill, containing the first and second pulse sensors connected to rollers connected to a moving strip, a strip stock counter, a counter the coordinates of the weld, the strip stock calculation unit, the comparison block and the two elements AND 2.

The known device allows to register the position of the weld in the tracking area with a varying margin of the strip in the tracking zone, however, it is not intended to simultaneously monitor several welds, for example, on. mill endless rolling.

The purpose of the invention is to expand the functionality of the device by providing simultaneous control

15 several zones and providing the operator with information on the position of the welds.

Claims (2)

The goal is achieved by the device for monitoring the position of strip welds on a continuous rolling mill, holding the first and second pulse sensors, the inputs connected to the measuring rollers connected to the moving strip, and the outputs through the elements And connected respectively to the summing and subtracting inputs of the counter, equipped with two annular shift registers with the number of bits equal to the maximum number of welds in the control zone, an additional counter, two groups of elements I, the number of which is p The maximum number of welds in the control zone and the OR element connected to the zero outputs of the meters, the control input of the first shift register are connected to the output of the signal source that there is a seam at the input of the control section, the control input of the second shift register is connected to the output of the OR element, the outputs of the first shift register are connected to the inputs of the first group of elements And connected to the first pulse sensor, the outputs of the second shift register are connected to the inputs of the second group of elements And connected to toromu pulse sensor. In addition, the device is also provided with a register of keys connected via the OR element with an indication board. The drawing shows a functional block diagram of an apparatus for controlling a metal strip on a continuous rolling mill. The device contains sensors 1 and 2 pulses, the inputs associated with rollers mounted on the moving lane, two groups of elements 3 and 4 AND, whose information inputs are connected to sensors 1 and 2 pulses, counters 5j, j, the summing and subtracting inputs of which are connected respectively, to the outputs of the elements 3j.n and 4, -n, AND, the ring shift registers 6 and 7, the outputs of which are connected respectively to the control inputs of the elements 3i-n and 4i-j, And, the button 8 to its original state, the register of keys 9i -n meters connected to the outputs 5 (-p and connected through Element 10 OR with the indicator board 11, element 12 OR connecting the zero outputs of the 5t-ri counters with the control system channel; the control input of the register is connected to the signal bus about the presence of a seam at the input of the control section, and the control input of the register 7 is connected to the output of the element 12 OR, the installation inputs of the zero registers 6 and 7 and the counters 5 | -l are connected to the common bus in which the button 8 is installed. The device works in the following way. Before starting by pressing button 8, the initial state, all the counters 5i-n are cleared, and in the leftmost bits of the shift registers 6 and 7, one is entered, as a result of which elements 3 and 4 and 3 are opened, 4 | and key 9. At the beginning of work, the strip accumulator of the rolling mill is filled. In this case, the pulses of the sensor 1 will enter the counter 5 |. After passing through the entire strip and making the end of the previous strip and the beginning of the next strip, the signal Welding is sent to the shift register 6, and the unit will shift to the second bit. At the same time, the element In will open and, as the accumulator is filled further, sensor 1 pulses will in the Sj counter. Similarly, the process will be repeated for the remaining bands. After filling the BP counter, i.e. the last one, and carrying out the welding process, "The unit from the last bit of the shift register 6 will go over again to the first bit and again will open element 3) I. But by this time, the first band in the drive , should get out of it and the counter 5i should already be prepared to count the length of the next band. When the first band leaves the storage unit, the pulses from sensor 2 are fed to the subtracting input of counter 5i, as a result of which the number in it decreases. The content of this counter is displayed on the display board 11. When the sensor 2 measures the entire length of the first strip, the code 5 will display the code zero. By this signal in the second shift register 7, the unit goes to the second bit. Now elements 4 and key 92 are opened, as a result of which the stock of the second band will be indicated on the indicator board, and the pulses from sensor 2 go to counter Sg. When this band leaves the accumulator, then by the signal "Zero CO of the counter bz, the unit will be shifted again in register 7, as a result of which the impulses from the sensor 2 will go to the next counter, the contents of which will be displayed on the indicator board I. subsequent lanes are similar. In this case, the signals about the beginning of each next band from the output of element 12 OR enter the control system of the unit. The proposed device allows to expand its functionality by providing simultaneous control of several working zones and most to provide an endless rolling mode, which improves the mill performance by reducing the time required for filling and tapping the strip, which leads to an increase in the average rolling speed, and also by reducing transhipment times, improving strip quality and reducing roll wear. Claims 1. Ustro ist in. for monitoring the position of the welds of the strip on the continuous rolling production unit, the first and second pulse sensors contained in the inputs are connected to measuring rollers connected to the moving strip and the outlets through elements AND connected to the totalizer and subtractive inputs of the meter, respectively, characterized in that in order to expand the functionality of the device by providing simultaneous control of several zones, it is equipped with two circular shift registers with the number of bits, p The maximum number of welds in the control zone, an additional counter, two groups of I elements, whose number is equal to the largest number of welds in the control zone, an OR element connected to zero meter outputs, the control input of the first shift register are connected to the output signal source of the presence the seam at the entrance of the control section, controlled to the second input of the second shift register, is connected to the output of the OR element, the outputs of the first shift register are connected to the inputs of the first group of AND elements connected to vomu pulse sensor, outputs of the second shift register are connected to inputs of the second group of AND gates connected to the second sensor pulses. 2. The device according to claim 1, characterized in that, in order to provide information on the position of the welds, it is provided with a register of keys connected via the OR element to the indicating board. Sources of information taken into account in the examination 1. V. Berzin and V. Semychev. System of automatic tracking of the position of welds in cold rolling mills. - “Mechanization and automation of production, 1970, No. 1, p. 3-4 2 Copyright certificate № 67U3o3, class B 21 B 37/00, 19.04.77 (prototype).