SU942830A1 - Rolling rate meter - Google Patents

Description

(54) FROM; ROLL TEMP

Claims (2)

The invention relates to mechanical engineering, and specifically to devices for controlling and controlling technological parameters of rolling. A device for recording the tempo of rolling is known on the integrating R-C chain x 1. The disadvantage of the rigid device is the limitation of the constant time of the C – C chains, which leads to a significant error in measuring the small rolling rate. Closest to the proposed technical entity is a device that contains a one-shot, integrating circuit and amplifier, connected in series 2. The disadvantages of the known device are the low accuracy of measuring small values of the rolling rate and the impossibility of using a rolling mill on the reversing cages. Since the rolling rate is usually measured on roughing cages, which, as a rule, are reversible, the number of reverses is determined individually for each workpiece 1 and is not known in advance, the latter drawback is decisive. The purpose of the invention is to show the accuracy and reliability of the device. The goal is achieved by the fact that in the device containing the counting pulse generation unit and in the output cascade, the counting pulse generation unit is executed as a two-input logic circuit consisting of two one-shot, two triggers and three coincidence circuits, and the output cascade is equipped with a timer, a pulse distributor and serially connected by a counter, a coincidence circuit and a register of folders; moreover, the output of the first one-shot, the input of which is the first input of the meter, is simultaneously connected to the first The first input and the second input of the third matching circuit, the output of which is simultaneously connected to the setup inputs of the first and second triggers, the unit inputs of which are connected to the first and third inputs of the third matching circuit, respectively, and the single output of the first trigger, the second input of which is connected to the output of the second one-shot, the input of which is the second input of the meter, and the first and second coincidence circuits are connected to the counting inputs of the first and second watts triggers, and the zero output last connected to the second input of the first matching circuit, the output of the third matching circuit connected to the first input of the pulse counter, and the output of the timer connected to the input of the distributor pulses, the first, second, and third exp codes of which are connected respectively to the inputs of the register memory, match schemes and counter. FIG. 1 shows a block diagram of the proposed device; in fig. 2 temporary diagram of the device. The block diagram includes a block 1 of forming counting pulses, an output stage 2, single vibrations 3 and 4, coincidence circuits 5 and 6, triggers 7 and 8, coincidence circuit 9, timer Yu, pulse distributor 11, memory register 12, coincidence circuits 13 and a counter 14. In FIG. 2, where the time diagram of the operation of the device is given, explaining its operation for all possible combinations of input signals; 3- output signal of one-shot 3; 4- output signal of one-shot 4; Wook. - single output trigger Hera 7; About a single exit trigger 8; and zero output trigger 8; and amch 9 - OUTPUT signal circuits. 9 is the same (output signal formate). The device operates in the following way. In the initial state, the triggers 7 and 8 are in the zero state, the signal O from the single output of the trigger 7 is applied simultaneously to the first inputs of the circuits 6 and 9, coinciding, thus achieving their locking. In this case, from the zero output of the trigger 8, the signal 1 is fed to the second input of the circuit 5 of coincidence, which ensures its readiness for operation. The passage of the workpiece for rental is recorded by primary sensors, the output signals from which are received at the input. 1 and in. 2 meter. These signals are shifted in time, with the amount of shift determined by the speed of the workpiece and the spatial arrangement of the sensors. At the time of the occurrence of the signal on the input. 1 single-vibrator 3 generates a short pulse, which causes trigger 7 to state 1, which results in a ready-. ness of circuit 6 coincidence At the time of the appearance of the signal on the input. 2, a one-shot 4 is triggered, a short pulse from the output of which triggers a matching circuit 6. The signal from the output of the latter puts trigger 8 into state 1. IF then the workpiece is reversed, i.e. input signals are received in the sequence in .. 2, in. 1, the actuation of the one-shot .4 through the open coincidence circuit 6 again switches the trigger 8 to the state O, which with a single signal from its zero output unlocks the coincidence circuit 5. Then the time-shifted signal with in. 1, through an open circuit 5, matches the trigger 7 to the state O. Thus, of course, the entire circuit returns to its original state. If the workpiece is not reversed, then the rental of the next workpiece at the time of occurrence of the signal on the input. 1, a regular pulse from the one-shot 3 triggers a coincidence circuit 9, which outputs a counting pulse to the output cascade 2 and, one-by-one, triggers 7 and 8 to the state O. Thus, the counting pulse forming unit 1 returns to its initial state. Coming then on the input. The 2 time-shifted signal cannot change the states of the elements of the counting pulse generation unit 1, since the coincidence circuit 6 is locked with a signal O from the single output of the trigger 7. The counting pulses in the output stage 2 are fed to the counter 14, where they accumulate during the time interval of the timer Yu When triggered, timer 10 starts the pulse distributor 11, which signals its outputs to reset register 12 and unlock the circuit 13 to match, which results in overwriting the contents of the counter in the cleared register 12 and resetting the overwritten contents of the counter 14. Thus, in register 2, the number that corresponds to the number of rolling ingots during the timer operation interval is always nakodit. The result of the measurement is formed directly in the form of a numerical code, which makes it possible to compare the meter with the modern means of digital indication and secondary information processing. The use of the proposed device allows to ensure the elimination of rolling stock with an accuracy of 0.2% at any rolling speed and increase the reliability of the device by an average of 40%. Compared with the known devices, the present invention allows to increase the rhythm of rolling mills and increase productivity by 3 -5% by shortening non-technological pauses. The invention The rolling rate meter containing a block for forming a counting pulse to an output stage, is also distinguished by the fact that, in order to increase the accuracy and reliability of operation, the block for forming counting pulses is made in the form of a D1EHWH INPUT logic circuit consisting of two single vibrators, two triggers and three coincidence circuits, and the output stage is equipped with a timer, pulse distributor and serially connected counter, coincidence circuit, and memory register), the output of the first one-oscillator, whose input is The first input of the meter is simultaneously connected to the first input of the third coincidence circuit, the output of which is simultaneously connected to the setup inputs of the first and second triggers, the unit inputs of which are connected respectively to the first and third inputs of the third coincidence circuit, and the single output of the first trigger is connected to the first input of the second a matching circuit, the second input of which is connected to the output of the second one-shot, the input of which is the second input of the meter, the slots of the first and second matching circuits These are connected to the counting inputs of the first and second triggers, and the zero output of the latter is connected to the second input of the first coincidence circuit, the output of the third circuit coinciding with the first input of the pulse counter, and the timer output connected to the input of the pulse distributor, the first, second and third outputs connected, respectively, to the inputs of the memory register, the circuit with the dip, and the counter. Sources of information taken into account in the examination 1. Kruashvili 3. E. Automated-. heating of steel. M., Metallurgists, 1973, p. 174, fig. 36 2. Small S. A. Economic heating of the metal. M., Metallurgists, 1967, p. 133, fig. 38 Midrange |