SU1212691A1 - Arrangement for optimized sectioning of billet in continuous metal-casting machine - Google Patents

Description

12

the element AND, the capacitor is the switch, and the first and second inputs of the element are respectively the first and second inputs of this unit, the second input of the adder is the third input of the block of the length to be cut. ingot, output adder and. the output of the element And is connected respectively to the first and second inputs of the switch, the output of the element And is connected to the capacitor, the output of the switch and the output of the capacitor are respectively the first and second outputs of the block of the ingot length to be cut.

3. The device according to claim 1, which means that the optimal cutting block contains a group of computational blocks, a group of adders, a group of comparators, two groups of switches, a block of selection, a generator of pulses, a counter of pulses, a decoder, a comparator and a gate of elements I, the first input of each of the group of adders, the first input of each of the group of comparators are the first input of this block, the first input of the pulse counter is the second input of this block, the third and quarter inputs of which are But the first and second inputs of each computational unit from the group of computational units, the output of each computational unit from the group of computational units is connected to the second input of the corresponding adder from the adder group and the second input of the corresponding comparator from the comparators group, the output of the corresponding adder from the adder group and the output of the corresponding comparator from groups of comparators are connected respectively to the first and second inputs of the corresponding switch from the group of switches, output Each switch from the first group of switches is connected to the corresponding input of the selector unit.

The invention relates to ferrous metallurgy, and in particular to devices

691

Claims (1)

The first output of which is connected to the first input of the comparator, whose output is connected to the input of the pulse generator, the output of which is connected to the second input of the pulse counter, the output of which is connected to the input of the depressor, the first and second inputs of each switch from the second group of switches are connected to the corresponding output of the decoder - and the output of the corresponding switch from the first group of switches, the output of each switch from the second group of switches: is connected to the second input of the comparator, the output of which is connected to the first the input of each element from the AND group of elements, and the second inputs of the AND elements are connected to the corresponding output of the decoder; the outputs of the AND elements are the outputs of the optimal cutting block. 4. A device according to claim 1, characterized in that the program block comprises two switches, two encoders, a comparator, an AND element, a NOT element and a trigger, the first input of the first switch being the first input of the program block, the first and second outputs of the first switch connected to the inputs of, respectively, the first and second encoders, the outputs of which are connected respectively to the first and second inputs of the second switch, the output of the second switch is connected to the first input of the comparator, the second input of which is the second input of the program a lot of block, comparator code is connected to the first input of the AND element and the first trigger input, the second input of which is the third input of the program block, the trigger output through the NOT element is connected to the second AND code of the AND element, the output of the AND element is connected to the second input of the first switch and to the third the input of the second switch. for automatic cutting of ingots in the machines of continuous casting, and can 31 to be used in all cases when it is necessary to cut a certain length of the billet into specified dimensional lengths. The purpose of the invention is to increase the yield of metal by minimizing ingot residues during cutting. FIG. 1 shows a block diagram of a device for optimal cutting of an ingot in a continuous metal casting machine; in fig. 2 - the internal structure of the block of the cut ingot length; in fig. 3 - the internal structure of the block optimal cutting; in fig. 4 - internal structure of one of the program blocks .. The device for optimal cutting of the ingot in a continuous metal casting machine (Fig. 1) includes a stopper position sensor 1, an ingot extraction speed sensor 2 and an ingot length pulse sensor 3. Sensors 1 and 2 are connected respectively to the first and second inputs of block 4 of the ingot length to be cut. The outputs of the setters 5 and 6 of the dimensional lengths of the workpieces are connected respectively to the first and second inputs of the switch 7, the output of which is connected to the first input of the comparator 8, the second input of which is connected to the output of the counter 9 of the current length of the workpiece (from the front end of the ingot to the initial position of the ingot gas-cutting machine (not shown), its first input connected to the ingot length sensor 3. The output of the comparator 8 is connected to the input of the cut control unit 10, to the first input of the counter 11 the number of cut blanks and to the second input (extinguishing) of the counter ik 9 of the current length of the workpiece. The optimal cutting block 12 has n outputs, each of which is connected to the first input of the corresponding program block 13. From group 14 of program blocks. The number n of program blocks 13 is selected according to the conditions of a particular production within 5-25 and depends of the number of options for a given set of cut lengths. The second inputs of program blocks 13 are connected to the output of the counter 11 of the number of cut blanks, and the third inputs of program blocks 13 are connected to the second output of block 4 my ingot length, program blocks 13 via an OR gate 15 2691 connected to the third input (control input) of the switch 7 and to the second input (reset input) of the counter 11. Block 4 of the cutting length of the ingot 5 (Fig. 2) contains an element 16 and the first and second inputs of which are connected to the outputs of the stopper position sensor 1 and the ingot extraction speed sensor 2, respectively. The block 4 also contains a setting device 17 of structural length (from the meniscus of the mold to the initial position of the MHF), the output of which is connected to the first input of the adder 18, the second input 5 adder 18 is connected to the output of the counter 9 of the current length of the ingot. The cy output of the cam 18 is connected to the first input of the switch 19, the output of which is the first output of block 4. The output 0 of the element AND 16 is connected to the second input (control) of the switch 19 and to one of the terminals of the capacitor 20, the other terminal of which is the second output of the block 4. 5 The structure of block 12 optimal cutting (Fig. 3) is based on the following. When cutting an ingot with a length of Lp, it is usually required to obtain blanks of a given dimensional length C. It also allows the receipt of blanks of a second, specified, length I, the number of which is sometimes limited. Thus, LP K ,. L, + -t-A, where K and K are the number of dimensional workpieces, respectively, I, and C in length; D is the remainder of the ingot, which should be minimized by selecting the optimal ratio of K and K. The number of possible (real for the task) ratios of K and K is (as experience shows) between 5 and 25, depending on the values of I and Ig. Block 12 contains a group of 21 computing blocks 22.1, ..., 22.P, group 5 adders 24.1, ..., 24p, group 25 of comparators 26.1, ..., 26p, group 27 of switches 28.1, ..., 28p, selection block 29, pulse generator 30, pulse counter 31, deparator 32, switch group 33 34.1, .. , 34p, comparator 35 and the group of 36 elements And 37.1, ..., 37p. Each of the computational blocks 22 is designed to perform the calculation function L; + 1-2 different ratios K and K. For entering the specified values of the dimensional lengths i each computing unit is 22 first five and the second inputs are connected to the outputs of the 5 and 6 measuring lengths of the I, and C. To determine the difference (Lp-L;), the first output of the block 4 of the length to be cut LP and the output of each of the computing blocks 22.1 ,, .., 22п are connected respectively to the first and the second inputs of the corresponding adder 24,124p from group of adders 23 the output of each of which is connected to the first input of the corresponding switch 28.1, ... 28p from the group of 27 switches. To determine the sign of the remainder of the ingot L Lp - L - for each of the calculation options are the comparators 26.1, ..., 26n from the group of 25 comparators, the first and second inputs of which are connected respectively to the output of block 4 and the corresponding computing unit 22.1, .. ., 22p, and the output of the comparator 26.1, ..., 26p from the group of 25 comparators is connected to the second control input of the first corresponding switch 28.1, ..., 28p. The outputs of all n switches 28.1, ..., 28 p are connected to the corresponding inputs of the selection unit 29 and to the second inputs of the corresponding switches 34.1 ,. .., 34p, starting with the first of group 33, whose outputs are combined and connected to the second input of the comparator 25. The first input of the comparator 35 is connected to the output 6jtoKa 29 of the selection, and the equality output of the input values of the comparator 35 is connected to the control input of the generator 30 pulses whose output through the second input of the counter j31 is connected with the input of the decoder 32, which has n outputs. Each output, starting with the first decoder 32, is connected to the first (control) input of the corresponding switch 34.1, ..., 34p, starting from the first one of the group of 33 switches and to the first input of the corresponding element And 37.1 ,. .., 37p, starting with the first, from group 36. The second inputs of each switch 34 .1, ..., 34p, starting with the first of group 33, are connected to the code of the corresponding switch 28.1 ,, .., 28p, starting with the first of the group of 27 switches. The second input of the counter 31 (quenching input) is connected to the second output of block 4. The second inputs of all elements AND Yu is 20 25 zo Q with five 37.1, ..., 37p are connected to the output of the comparator 35. The outputs of the And 37.1, ..., 37p elements are the outputs of the optimal cutter 12. Each of the program blocks 13.1, ..., 13p of group 14 (Fig. 4), designed to reproduce the found optimal cutting plan for the ingot, contains a switch 38, the first output of which is connected to a specific input of the encoder 39, and the second output to a specific input the encoder 40. The outputs of these encoders are connected to the respective first and second inputs of the switch 41, its output connected to the first. the input of the comparator 42, the second input of which is connected to the output of the counter 11, the number of cut blanks, the output of the comparator 42 is connected to the first input (counting), trigger 43 and the first input of the And 44 element, the output of the trigger 43 through the element 45 is connected to the second input element and 44.. The output of the latter is connected to the second (control) input of the switch 38 and to the third (control) input of the switch 41 and is the output of the software unit 13. The blanking input and the second input of the trigger 43 are connected to the second output of the block 4. The device works as follows. At the moment of closing the stopper blocking the supply of liquid steel to the mold, and stopping the pulling stands, individual signals appear at the outputs of sensors 1 and 2, which causes the output of the strobe signal at element 16 to turn on the switch 19. As a result of adding the current value of the length of the workpiece C, coming from the counter 9, and the constructional length of the ingot L installed in the setting unit 17, the output of the adder 18 is the total length | Ingot Lp to be cut. (optional) are installed in the setting units 5 and 6 before the casting process begins. The values of 1 and C are simultaneously received at the inputs of all computational blocks 22.1, ..., 22p, where the value L, is calculated (the total length of all the blanks cut from L), obtained for various cutting options programmed into these blocks by setting different coefficients K | and Kg. The result of the calculation of each block 22.1, ..., 22n is fed to the second input of the corresponding algebraic adder 24, on, the first input, which receives the value Lp. from the first output of block 4. At the output of adders 24.1, ..., 24p, the values of the difference Lp, -L- are obtained, and these values can be both positive and negative. Since solutions with a negative balance do not have a physical meaning, such results are excluded from further consideration. This is done as follows. The outputs of blocks 22.1, ..., 22p and 4 are connected to the inputs of each corresponding comparator 26.1, ..., 26n so that a single signal appears at its output only if L = L This signal turns off the corresponding switch 28 from a group of 27 switches. Thus, only the positive values of the indicated difference are received at the input of the blocking 29 of the selection and the value of the smallest one appears at its output. The definition of the block 22.1, .. 22p that gave the best result of cutting, the minimum balance found is fed to the first input of the comparator 35, The second input of the comparator 35 is alternately connected (by means of switches 34.1,..., 34p) the values of the residuals for each calculation channel from the output of the switches , 28.1 ,,,,, 28п. The polling sequence is ensured by the fact that the control inputs of the switches 34, 1, .., 34p are fed from the outputs of the distributor, consisting of the decoder 32, the counter 31 and the generator 30, and pulses. At the moment of coincidence of the values at the inputs of the comparator 35, its output signal stops the generator 30 and, thus, at the corresponding output of the decipher-; RATOR 32 fixes a single signal (at zero, the signals on the remaining outputs). The arrival of this signal at one of the inputs of the corresponding element And 37.1 ,,,, 37p ensures the appearance of a unit at the output of this element, since its other output this MOMeHf is present10 five 0 five 0 five 0 five 0 There is a single signal from the output of the comparator 35. Thus, at the corresponding output of the block 12, a single signal is recorded indicating the block number -22 with the optimal cutting plan. On the remaining outputs of the block 12, the signals are zero, PRI me R. Implement a specific optimal cutting plan. If, as a result of the optimization procedure described, a single signal appears on the second () output of optimization block 12, then this means that the cutting plan is 41J + 31J optimal. In the second, block 13.2 from group 14 (Fig, -4) in accordance with its number (i. 2), the first output of the switch 38 is connected to the fourth input of the encoder 39, and the second output of the switch 38 to the third input of the encoder 40, Thus, the fact that a single signal appears at the input of the program block 13 2 that the output of its first encoder 39 always represents the number 4 (in binary code ), ai, the output of its second encoder 40 (after switching to the switch 38) is always represented by the number 3, At the initial moment the signal .; at the control input of the switch 38 is equal to zero and therefore the input single signal passes through the first switch output to the fourth input of the encoder 39, on which code the number 4 appears. This value through the switch 41 is transmitted to the first input of the comparator 42. The switch 7 at the zero signal of the control input is in the position at which its output passes information corresponding to the value of C. The second input of the comparator 8 continuously receives information about the current length of the workpiece 1 from the output of the counter 9, If the values of -1 coincide, and 1 at the output of the comparator 8 a single signal appears, which is the command for the unit 10 for controlling the MGR cutter. At the same time, the same signal is recorded in the counter 11 of the number of the workpiece and the counter 9 is zeroed. The process of controlling the length of a new billet. Information on the current number of cut blanks of length I., with 9 .1 counter 11 is fed to the second input of comparator D2. As soon as a command is received to cut the fourth workpiece, a single signal appears at the output of comparator 42, which is fed to. the first input of the element I 44 and the counting (first) input of the trigger 43; In this case, there is no single signal at the output of the trigger, which corresponds to the presence of a unit at the output of the element NOT 45. Thus, at the considered moment The control inputs of the switches -38 41 and 7 yo are a single signal, at which the specified switches are set to the second position. Here, a single signal is provided to the third input of the encoder 40. 1269110 and at the first input of the comparator 42 a code is fixed corresponding to the number 3. At the same time, using the switch 7, the first input Koi apaTopa 8 5 provides a signal corresponding to the additional length B2 (from the setpoint- 6). Similarly to the process described above, the process of cutting-three blanks 10 of length L is now carried out. When forming a command to cut a third blank with a length of Ig, a single signal at the output of the trigger 43 a single signal ensures that the signal at the control inputs 15 of the switches 38, 41 and 7 disappears, thereby preparing scheme to the new cycle. The device is implemented on. commercially available standard blocks. --Yt AG 17 sixteen 20 4h IB nineteen 2 R SdA.12 Editor E. Papp 697/18 Circulation 757 Subscription VNIIPI Goiudarstve of the USSR Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Branch ShSh Patent, Uzhgorod, st. Project, 4 FIG. Compiled by A. Sergeev technical editor 3.Paliy Proofreader V. Sinitska