SU1447552A1 - Arrangement for optimum pattern-cutting of ingots of metal continuous casting machine - Google Patents

Abstract

The invention relates to ferrous metallurgy, more precisely to continuous casting of metals and alloys, more specifically to installations for the automatic cutting of ingots of a continuous casting machine. The purpose of the invention is to increase the yield of a suitable metal., The essence of the invention is to optimally cut an ingot if there is a continuous casting of one or several powders in the machine path. This is ensured by the organization of simultaneous tracking of several by themselves and fixing the length of the ingot by mezwudu by themselves. 1 il.

Description

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The invention relates to ferrous metallurgy, in particular, to installations for the automatic cutting of ingots of a continuous casting machine (Caster), and can be used in all cases when it is necessary to cut a certain length of a billet into specified dimensional lengths,

The purpose of the invention is to increase the yield of a suitable metal.

The drawing shows a block diagram of the device for optimal cutting of the ingot.

The device contains a block 1 of optimal cutting, a group of program blocks 2, the first 3 and second 4 elements OR, the counter 5 of the number of cut blanks, the first element 6 of duration limitation, setters 7 and 8, respectively, of the main and additional length, the first block 9 of switches, the first comparator 10, the block 11 of the length to be cut L-, the ingot length counter 12, the ingot length sensor 13, the stopper position sensor 14, the ingot draw speed sensor 15, the second switch block 16, the third switch block 17, the first 18, the second 19 and third 2 0 registers, first 21, second 22 and third 23 blocks of keys, second 24, third 25. and fourth 26 elements of limitation of duration, first 27, second 28 elements AND, first: 29, second 30 and third 31 delay elements, first trigger 32 , the first element is NOT 33, the first key 34, the first counter 35, the first unit 36, the second comparator 37, the third element AND 38, the second element NOT 39, the fifth element 40, duration limits, the third element OR 41, the fourth element 42 delay , the second trigger 43, the second key 44, the second counter 45, the second unit 46, the third comparator 47, the fourth element t I 48, third trigger 49, third element NOT 50., fifth delay element 51, five 52 and sixth 53 elements And, third key 54, third counter 55, third third 56, fourth comparator 57, seventh 58 , eighth 59, ninth bout, tenth 61 and eleven 62 e четвер gment, fourth element OR 63, fourth trigger 64, sixth element 65 of duration limitation, fourth setting 66, fifth comparator 67, fifth fifth trigger 68, fourth 69 and p

the second 70 elements are NOT, the maximum signal selector 71, the fifth 72, the sixth 73, the seventh 74 and the eighth 75 elements OR, the fifth adjuster 76, the first 77, the second 78 and the third 79 adders, the sixth trigger 80 and the button 81.

The blocks 21–23 of the keys are designed in such a way that the switching (bitwise) of their information inputs with the corresponding outputs is carried out only if there is a single signal at their control input. At a zero signal at the control input, the specified key blocks are automatically disabled,

The unit 66 sets the value of the yp of the non-conforming part of the ingot (located on both sides of the structure), set by the technologist depending on the steel grade in the range from 0.2 to 0.4 m.

The trigger 68 and element 62 are designed to block the transfer of the Res signals to the IGR before cutting the non-conforming head of the ingot. Thus, the scheme presented in the drawing is intended to control the cutting for cases where up to three threads are possible in the SHZ path simultaneously.

In the presence of a large number of advances, the MSHZ goes beyond the limits of acceptable casting regulations, t, e, the continuous casting machine is not subject to operation. However, the presented scheme allows you to simultaneously monitor a large number of assets by increasing the groups of elements that perform the tracking function and contain AND, NOT, duration, delay, trigger, key, counter, setpoint, and comparator elements.

The principle of operation of the device is as follows.

In the nominal mode with no VII, the cutting process of the ingot consists in that the first inputs of the first comparator 10 through the first block 9 of switches to its second inputs are supplied (in parallel code) with the specified value of the main measured length from the setting device 7. This ensures the absence of a single signal at the first (control) input of the switch unit 9. To the second inputs of the comparator 10 is supplied (in parallel code) the value of the current ingot length with

the outputs of the counter 12 connected by its first (counting) input to the ingot length sensor 13 (the current ingot length is the current value of the ingot head portion protruding beyond the zero position of the IGR). When the current ingot length is equal to a given dimensional one at the output of the comparator 10, a single signal appears that passes at the output of the element AND 62 through the third input of the element, since the first inputs of the specified element are also affected by 1.

Single signals appear that are fed to the corresponding inputs of the first element AND 27 and block 11 of the length to be cut LP. Through the AND 27 element, the tracking circuit for moving along the ca is started up, through the LP unit 11, the optimal ingot cutting circuit and the blocking circuit for cutting short pieces are put into operation.

When the caster is started up, a single signal from the output of the button 81 goes through element 4 to the first input of the second element.

The presence of a single signal at the first 15 and 28, the second input of which is also

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the first input element And 62 due. The fact that the dimensional cutting mode began only after the off-specular head of the ingot was cut off by the output signal of the comparator 37 and the activation of the trigger 20 68, which remains in the switched-on state for the entire time of continuous casting.

The presence of a single signal at the second input of the And 62 element is due to the following state of the blocking circuit of the cut of short billets consisting of comparator 67, element 69, sensor 76, trigger 80, selector

71

At the moment the device is turned on, the trigger 80 (just like all the other triggers, registers and counters of the device) is zeroed with a short pulse applied to its R input (the zero lines of the circuit are not shown in the drawing). Consequently, the output signal at its output at the time of switching on is zero, which determines the presence of a single signal at the output of the fourth element HE 69. During the casting process, when there is no cell in the caster, the followers 35, 45 and 55 counters themselves zero state. This situation, analyzed by the fifth comparator 67, determines the presence of a zero signal at its output. Therefore, all signals produced by the comparator 10 are passed to the output of the third element OR 41 as a cut command for the MHR control block (not shown). The specified pulse cut signal zeroes the current length counter 12, which then begins to count the current length of the next workpiece.

When hovering sa on the outputs of the sensors 14 and 15 stopper and speed

is affected by a single signal, since when the circuit was turned on, the first counter 35 was reset and therefore the output signal of the second comparator 37 is also zero. Consequently, at the output of the second element I 28, a single signal appears that through time (at the first delay element 29) is fed to the first 25 input of the first trigger 32, including

him. The output unit signal of the first trigger 32 is fed to the first (control) input of the first key 34, allowing pulses of ingot length from the sensor 13 to pass through the first (counted) input of the first counter 35. The second trigger 43 does not output the output signal of the OR 4 element through the first element 6 of the duration limitation, since you have been installed on this element. time hold 2 i The condition for the passage of the signal at the first input of the second trigger 43 through the third element 38 is the presence of a single signal from the output of the trigger 32 at the second input. However, by the time the signal at the output of the trigger 32 appears, the signal at the output of the restriction element 6 The duration of the duration already disappears. On the third trigger 49, the specified signal also does not pass through the fourth element AND 48 due to the absence of a single signal at the output of the trigger 43,

With the equal content of the counter 35 set in the unit 36, the value (LH + Ln / 2) at the output of the comparator 37 appears a single signal, which in the form of the Res command passes to the input of the MHR, cutting off the non-conforming head part of the ingot. The same signal is used to extinguish the trigger 32, reset the counter 35 and turn on the trigger 68,

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is affected by a single signal, since when the circuit was turned on, the first counter 35 was reset and therefore the output of the second comparator 37 is also zero. Consequently, a single signal appears at the output of AND 28, which through time (at the first delay element 29) arrives at the first 5 input of the first flip-flop 32, including

him. The output unit signal of the first trigger 32 is fed to the first (control) input of the first key 34, ensuring that the ingot length pulses from the sensor 13 pass through it to the first (counted) input of the first counter 35. To the second trigger 43, the output signal of the OR 4 element does not pass through the first element 6 of the duration limitation, since you have been installed on this element. time hold 2 i The condition for the passage of the signal to the first input of the second trigger 43 through the third element 38 is at its second input a single signal from the output of the trigger 32. However, by the time the signal at the output of the trigger 32 appears, the signal at the output of the restriction element 6. the duration is already disappearing. On the third trigger 49, the specified signal also does not pass through the fourth element AND 48 due to the absence of a single signal at the output of the trigger 43,

With the equal content of the counter 35 set in the unit 36, the value (LH + Ln / 2) at the output of the comparator 37 appears a single signal, which in the form of the Res command, passes to the input of the MHR, cutting off the non-conforming head part of the ingot. The same signal is used to extinguish the trigger 32, reset the counter 35 and turn on the trigger 68,

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Similarly to this part of the scheme, tracking of the first catfish is provided (if the first through s appears before cutting the off-grade head part of the ingot, then tracking of its movement is provided by the second tracking scheme).

The optimal cutting control scheme works as follows.

The signals from the sensors 14 and 15, arriving at the first and second inputs of block 11 of the length to be cut, in this block calculate Lp as the sum of LH of the constructive length (minus Lp / 2), i.e. the length of the ingot from the metal surface in the mold to the line of the initial (initial) position IGR N 1 of the current length of the ingot, information about which is received in parallel code via the third input of block 11 from counter 12. Information about the Lp value comes in parallel code from the first outputs of the block 11 to the first inputs of block 1 optimal cutting through the first inputs of the third block 1.7 of switches by the strobe signal generated by the block It. The specified strobe pulse signal coincides with the leading edge of the pulse, which is the logical sum of the signals from sensors 14 and 15, and is fed from the second output of block 11 to the second input of block 1 and the third inputs of each program block from group 2 of program blocks through the second input of the eighth element IL 75.At the same time, the indicated signal zeroes the counter 5.

The third switch block 17 (the switch of the switch bottom) is implemented in such a way that at its outputs the signals pass from the first (informational) inputs connected to the first inputs of the block 1 1, in the absence of single signals at its second and third (control) inputs . In block 1, a linear programming computation of the optimal plan for cutting ingot with a length Lp is performed. The solution is obtained in the form of the number of blanks of the main and additional measured length. This solution comes in the form of a command signal from the output of block 1 to the first input of the corresponding program block from group 2 of program blocks, in which the optimal variant found is encrypted

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open The beginning of the operation of program block 2 is characterized by the absence of a single signal at its output and, therefore, at the third (control) input of the first block 9 of switches (bit switching). At the same time, the first (specifying) inputs of the first comparator 10 pass through the first inputs of the switch unit 9 information in a parallel code about the value of the main measuring length from the setting device 7. At the moments of coincidence of the current and measuring length, the comparator 10 generates single signals passing through the output of the third element I-fflH 41 through his fourth entry as Res. These commands are taken into account by the counter 5 of the number of cut blanks, the information from which enters the program block 2 at its second input. After the set of blanks of the main measured length specified by the block 1, the program block 2 generates a single signal, which from its output through the first element OR 3 enters the third input of the first block-9 of switches, switching it to the feed position on the first comparator 10 of the task to the measured length from the setter 8. At the same time, the counter 5 is reset at its second input. From this moment on, the cutting of blanks of additional measuring length is carried out. If, by the time of the last (before sowing) cutting, it appears that the ingot residue between the last cut line and som is less than a certain value (for slab caster, the value is about 4.8 m), which is specified on the fifth unit 76 as the difference (b | - o), then at the output of the nth comparator 67. there is a single signal. This signal turns on the sixth trigger 80, which leads to the disappearance of a single signal at the output of the fourth element NOT 69. At the same time, the output signal of the first comparator 10 does not pass through the element 62 and the last mercury ingot is not cut off (this cutting is performed in the transport and finishing section ), When the initial position of the IGR is at a given position yp / 2 (this value is due to technological requirements, is chosen by the operator from 50–250 mm and is set at the first

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The unit 36 in the form of the term K at the output of the second comparator 37 is a single signal that passes at the output of the third element OR 41 through its first input in the form of the command Res. The indicated signal through the time set on the third delay element 31 and twice the response time of the controlled IGR contactor (not shown in the diagram) also clears the first trigger 32 at its second input and clears the first counter 35 at its second input, which causes the output signal of the second comparator 37 to disappear. Thus, the tracking circuit for the first catfish is in the initial state.

Time S j is set so that the duration of the Res command is confidently perceived by the control unit miH IGR (not shown), and it should be sufficient to complete the switching process of the switch blocks 16 and 17 and transfer the contents of block 11 from registers 18 20 in block 1 optimal cutting. In addition, the output of the second comparator 37 turns on the fourth trigger 64 at its first input.

If, during the period of existence in the path of the first continuous casting machine, a second follow-up occurs, then the operation of the device for controlling the cutting of the ingot before the first pass occurs in a written manner. However, other elements of the device are also involved in the operation. Since the second input of the element 38 already contains a single signal from the output of the trigger 32, the output signal of the element 27, having passed through the duration limit element 6, passes also. And through the element 38 also through its first input, causing the trigger 43 to turn on at his first entrance. The output signal of the trigger 43 turns on the second key 44 at its first input, the second counter 45 starts counting the movement along the caster path of the second run, The output signal of the trigger 43 also turns on the first key block 21 of

its first input at time c is set at the third duration limit element 25. The contents of counter 35 are carried over the second

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the inputs of the block 21 keys in the register 18 on his first inputs. The time is twice as long as the total switching time of the key block 21 and the register 18, but less than the period between the pulses of the ingot length sensor 13. The trigger 49 in this situation is not included, since the time 5 - set on the delay element 30, is longer than the time € g set on the element 24 of the duration limit. Therefore, the output signal of the trigger 43 is supplied to the second input of the AND element 48 after the single signal at its first input, which is connected with the output of the duration limiting element 24, disappears. But to ensure the described mechanism of action for the triggers 32, 43 and 49, the condition & 2 with 1; .. At the same time, the minimum

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exceed the total switching time of the elements 48 and 49. The difference between C and C, C and Su, and 2 is equal to twice the switching time of the trigger 32. In addition, the time is about more than the decision time in block 1.

By the time the first MRA of the device originates from the initial position of the MGR, the ingot is cut to the first position, the device is considered complete, the corresponding set of device elements is included in the work of cutting the regular length Lpj of the ingot between

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first and second by themselves, recorded in the first register 18 minus the amendment introduced by adder 77 from setpoint 66, by the value of the substandard zone in ca.

This operation begins on a signal appearing at the output of comparator 37 (via the first input of the second element OR 41), with which, besides cutting off the first pass, the trigger 80 is also extinguished and the counter 12 is zeroed at their second inputs. The output signal of the comparator 37 is fed to the first input of the eighth element I 50, resulting in the appearance of a strobing signal at its output at the start of block 1 according to the optimal cutting Lp, to switching on (through the second input of element 74 OR) switch 17 at its second input the position where the fourth (informational) inputs associated with the 9 are connected to its outputs

moves the second block of 16 switches. The switch block 16 (of the switch size) is designed so that in the absence of a single signal at its first (control) input associated with the output of the And 61 element, its (information) inputs connected to the outputs of the adder 77 are switched with its outputs. the gating signal returns to the initial state the corresponding elements of blocks 1 and program blocks of group 2 of program blocks, after which block 1 determines the plan of optimized cutting Lp and its implementation by the device (as well as for Lp). and an unacceptably short workpiece, in this case, is carried out by connecting to the comparator 67 through its first inputs the outputs of the second counter 45 through the second inputs of the selector 71 of the maximum number, because after zeroing the counter 35, the maximum number is recorded exactly in the counter 45. This process ends when the appearance of a single signal at the output of the third comparator 47 and the cut off of the second one.

If even in the presence of the first and second casters in the caster a third one is formed, then a single signal from the output of the first element I 27 passes through the fourth element I. 48 through the second input and switches on the third trigger.49 through the first input. The output signal of the trigger 49 turns on the third key 54 at its second input and starts tracking the third key with the help of the third counter. 55 at its first entrance. The same signal, which passed through the fifth element OR 72 through its first input and the time-limited fourth time limiting element 26, organizes using the second block 22 keys on its first input a record in register 19 on the first inputs of the counter 45 and on the second inputs block 22 of keys, representing the length of the ingot between the second and third catfish.

The output signal of the trigger 49 that has passed through the element SHS 73 also extinguishes the trigger 64. When the second zone goes beyond the cutting line, the output signal of the comparator 47 is fed to the first input of the element 60,

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The second input of which is at this moment also at a single potential, since through the element P1LI at its first input it is connected to the output of the trigger 49. The output signal of element I 60 organizes the switching unit 17 of switches on its third input to the position of translating the content of the second adder 79 to block 1 and through the third input of the element OR 72 using the element 65 of limiting the duration - the formation of a gating pulse on

15 calculation of the optimal plan for cutting L p in block 1 by its fourth entrance. Time mounted on duration limiter 65 must be double the time.

20 zero counters and triggers contained in blocks 1 and 2.

In the design of this device, it is assumed that at the same time in the caster path there can be no more

25 three on owls. Therefore, the real situation is that by the time of the formation of the fourth route, the first one will already go beyond the limits of the continuous caster path. Then trigger 32 is in

30, the zero and the state and the next single signal at the output of the element And 27 includes this trigger, activates the tracking meter 35 for the fourth som. At the same time, the value of Ln is the length of the ingot between the third and fourth poys, is written to the register 20 from its first inputs from the third counter 55. To do this, the first (control) input of the third key block 23 connected to the duration limit element 40 is supplied the signal from the output of the element 53, all three inputs of which are currently under the influence of a single potential: the first and second inputs receive signals from the outputs of the flip-flops 49 and 32, and the third from the flip-flop 64 turned on at the end of the preceding the process of tracking the first catfish.

At the end-1 process of the cut-up to the third stage, the output of the fourth comparator 57 is a single signal, which is used to form a command for the third stage cut (via the OR 41 element at its third input), the formation of a strobing pulse on the calculation of Lp block 1 (through the element And 61 on his

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the first input, the OR element 72 at its fourth input and the duration limiting element 65), switching the switch block 16 by supplying a single signal from the output of the And 61 element to its first (controlling) input to the switching position of its outputs with the third inputs (informational), connected with the outputs of the third adder 79, switching the switch unit 17 to the switching position of its outputs with the fourth (informational) inputs associated with the outputs of the switch unit 16 (by supplying a single signal to its second (control) input d through the OR gate 74 upon its first entry and translation of the information rts from the adder 79 to the block 1 at its first inputs (inputs through the third switch unit 16 and fourth inputs of unit 17 switches).

If by the time of formation the third

He is already the first to cut, then 25 ingot lengths, ingot length sensor.

tracking the third switch is performed using the .32 trigger and the counter 35. In this case, when a single signal appears at the output of the third transmitter signal And 27J, the output signal of the trigger 32 turns on the key block 22 at its first input for records in the register 19 of the contents of the counter 45 are the Lp values (i.e. the length of the ingot between the second and third som). A single signal to the first (control) input of the key block 22, associated with the duration limiting element 26, flows through the AND 52 and OR 72 elements through their second inputs. All three inputs of element And 52 are currently under the influence of a single potential: the first input is because it is connected to the output of trigger 64, which was turned on by the preceding cycle of the tracking circuit containing counter 35, the second and third inputs are connected to the outputs respectively trigger 32 and trigger 43, which are responsible for monitoring the second and third catfish circuits at this moment.

The lag times Cg and G, duration elements 26 and 40 are set to t

The lag time, o and t, delay elements 42 and 51 are set to

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The proposed device provides for the expansion of the field of application of automatic optimal cutting of ingots in the caster for cases that allow the presence of several pulses simultaneously in the caster path. This is ensured by the organization of simultaneous tracking of several by themselves and the possibility of fixing the length of the ingot between themselves.

Claims (1)

Invention Formula A device for optimal cutting of an ingot of a continuous metal casting machine, containing a block of optimal cutting of a group of program blocks, the first OR element, a counter for the number of cut blanks, setters for the main and additional length, respectively, the first switch block, the first comparator, the block of cut length, the current counter 0 five 0 five 0 five the stopper position sensor and the ingot extrusion speed sensor, the meter output length output is connected to the first inputs of the optimal cutting block and the first switch block, the second inputs of which are connected to the additional length master outputs, the outputs of the first switch block are connected to the first 1 inputs of the first comparator, the second inputs which is connected to the outputs | of the current ingot length counter, the output of the first comparator is connected to the first input of the counter of the number of cut blanks, the outputs of the block optimum о - with the first inputs of each program block from Their group, the outputs of which are connected to the inputs of the first OR element, the output of which is connected to the third input of the first switch block, the outputs of the counter of the number of cut blanks are connected to the second inputs of each program block from their group, the outputs of the position sensor the stopper and the ingot speed extraction sensor are connected respectively to the first and second inputs of the block of cutout length, the third inputs of which are connected to the outputs of the current ingot length counter, the first input with The current length meter is connected to the output of the ingot length sensor, characterized in that, in order to increase the output 13 suitable metal, it additionally contains eleven elements AND, nine elements OR, five elements NOT, three keys, five elements of delay, six triggers, six elements 44 duration limits, three key blocks, three counters, five comparators, five set points, three registers, two switch blocks, three adders, a maximum signal selector and a button, the outputs of the stoodor position sensor and the ingot extraction speed sensor being connected to the first and the second inputs of the first element And the output of the first element And and the button are connected respectively to the first and second inputs of the second element OR, the output of which connected to the first input of the second element 2o the output of the fourth comparator of the connection I and the input of the first element to the first input of the tenth element of the limitation of duration, the output of the cat I and the third input of the third elec- tor to the first input of the channel OR, the output of the first trigger of the th element AND, the output of the second element is connected to the second inputs of the first ment AND through the first element of the delayed 25 key, fifth, sixth and tenth ki is connected to the first input of the first trigger, the output of which is connected to the second input of the third element I, the output of the third element I through the second element of the limitation of the length of the AND, and the second input of the eighth element is connected to the first input of the fourth element I, and through the second delay element to the first the input of the second trigger, the output of which is connected to the second input of the fourth element I, the output of which is connected to the first input of the third trigger, the output of the ingot length sensor is connected to the first inputs of the keys, the output of each of which is one with the first input of the corresponding ,, -. ment OR, the output of which is connected to the corresponding meters, the outputs of which are the second input of the fourth flip-flop, the output of the fourth trigger is connected to the first input of the fifth element AND connected to the first inputs of the second, third and fourth, respectively. the comparators, the second inputs of which are connected to the outputs of the first, second and third setters, the outputs of the second, third and fourth comparators are connected to the inputs of the third, fourth and fifth delay elements, respectively, the output of the third delay element is connected to the input of the first element, the second inputs the first trigger, the first counter and the first inputs of the fourth trigger and the first register, the output of the fourth delay element is connected to the input of the second element NOT, the second inputs of the second three the second, second counter and 45 50 55 and the third input of the sixth element I, the output of the fourth RSHI element is connected to the input of the third duration limiting element, the output of which is connected to the first input of the first key block, the outputs of the first counter are connected to the second inputs of the first key block and the first inputs of the maximum signal selector j outputs of the first key block are connected with the first inputs of the first register, the outputs of the first register and the fourth setting device are connected respectively with the first and second inputs of the first adder ,, output.the fifth element And with dinene with the second input of the fifth ele75521 first input of the second register, the output of the fifth delay element connected to the input of the third element NOT, with the second inputs of the third trigger, the third counter and the first input of the third register, the outputs of the first, second and third elements are NOT connected respectively to the second input The second element And with the third inputs, respectively, of the third and fourth elements And, the output of the second comparator is also connected to the first input of the eighth element And, the first input g of the third element OR and the input of the fifth the trigger, the output of the third comparator is also connected to the first inputs of the seventh and ninth elements AND and the second input of the third element OR, ten elements And, the output of the second trigger is connected to the second input of the second key, the first input of the fourth element OR, the third input of the fifth element 5 And the output of the third trigger is connected to the second input of the third key, the first inputs of the sixth element AND, the fifth element OR, the input of the fifth element NOT and the first input of the sixth element ISH1, the output of the fifth element is NOT connected to the second input of the seventh element AND, the output which is connected to the second input of the sixth ele45 50 55 and the third input of the sixth element I, the output of the fourth RSHI element is connected to the input of the third duration limiting element, the output of which is connected to the first input of the first key block, the outputs of the first counter are connected to the second inputs of the first key block and the first inputs of the maximum signal selector j outputs of the first key block are connected with the first inputs of the first register, the outputs of the first register and the fourth setting device are connected respectively with the first and second inputs of the first adder ,, output.the fifth element And with dinene with the second input of the fifth OR element, the output of which is connected to the second input of the ninth AND element and the input of the fourth duration limiting element, the output of which is connected to the first input of the second key block, the outputs of the second counter are connected to the second inputs of the maximum signal selector and the second key block , the outputs of which are connected to the first inputs of the second register, the output of the sixth element I is connected to the first input through the fifth element of limiting the duration The third key block, the third and third taps are connected to the fourth input of the blue counter connected to the third inputs of the maximum signal selector and to the second inputs of the third key block whose output is connected to the first inputs of the third register; the outputs of the second and third registers are connected to the first inputs respectively the second and third adders, the second inputs of which are connected to the outputs of the fourth setter, the outputs of the tenth element And, the first and third adders are connected respectively to the first, second and three - those inputs of the switch unit, the first outputs of the block of the length to be cut are connected to the first inputs of the third switch block, the second input of which is connected to the output of the seventh ШШ element, the first and second inputs of which are connected respectively to the outputs of the tenth and eighth elements And, third, fourth and n These inputs of the third block of switches are connected respectively to the outputs of the ninth And element, the second block switches and a block of length to be cut, the first to fourth inputs of the eighth element OR are connected respectively to the output of the eighth element AND, to the second output of the block of the length to be cut, the outputs of the ninth and tenth elements AND, the output of the eighth element OR are connected to the input of the sixth element of the duration limitation, outputs the third block of switches is connected to the third inputs of the optimal nibbling unit, the output of the sixth limiting element of the optimal nibbling duration, the third input of each program block from the group of Ogram blocks and the first input of the ninth element OR, the second input of which is connected to the output of the first element OR, and the output of the ninth element SH) is connected to the second input of the counter of the number of cut blanks, the outputs of the selector max. the maximum signal and the fifth setting device are connected respectively to the first and second inputs of the fifth comparator, the output of which is connected to the first input of the sixth trigger, the second the inputs of the sixth trigger of the current length counter are connected to the output of the third element SH, the output of the sixth trigger is connected to the fourth element NOT, the outputs of the fifth trigger, the fourth element NOT and the first compatcher are connected respectively to the first, VTO-eye and the third inputs of the eleventh element I, the output of which connected to the fourth input of the third element SH. / (SI F "eL OGDC