SU831253A1 - Apparatus for automatic control of rolling mill in welded-seam rolling mode - Google Patents

Description

The invention relates to the management of rolling production, in particular to control systems for cold rolling mills.

A device for automatic control of rolling ends positive sy ^s comprising four multiplying unit, five control units engine speed stands, two set point speeds, per- vy key rate control unit mill fl].

A disadvantage of the known device is that it does not take into account the rolling program of a particular roll, as a result of this, for a number of rolling programs, the weld (or end of the strip) will be passed through the mill stands at a speed higher than the specified one, which can lead to damage to the rolls, breakage of the strip in spot welding and loss of productivity of the mill.

Indeed, if the seam at a given speed entered the first stand of the mill, the minimum attainable speed of the strip at the entrance of any of the remaining stands at the moment of skipping the seam with a continuous decrease in speed is described by the expression

Vi '(4 where 1 is the stand number;

- the ratio of the speed of the mill to ¹ . speed of the corresponding stand;

d - the ratio of the speed of the strip at the exit of the mill to the speed of the strip at the entrance to the mill;

with | - rate of acceleration (grounding) of the mill;

1, ^ - interstand distance;

- the specified rolling speed of the svardnoy seam (or the end of the strip).

The purpose of the invention is to increase the productivity of the mill and reducing the number of strip breaks.

s B312S3

To this end, the proposed device · • controls the speed of the mill relative to the stand, for which, according to the expression (2σί ^{: L} to ⁵ ? Λ) 'where V _CT is the speed of the mill, the maximum value of the path of deceleration of the seam is obtained with a decrease in the speed of the strip at the entrance to the stand with the current to the given.

The work of the proposed device is based on the calculation by expression (2) of the values of lag *, · for all mill stands. The value of the grounding path is 4 = 4.2 .... η, where η is the number of mill stands.

•5

The parameters bt and ot participating in the calculation by expression (2) are constant for a particular mill.

on the.

The values of Vg- are set by the mill operator.

Values / l ₀ , / hl, · are determined during the calculation of the slowdown path of the weld in front of the strm. Based on the conservation of the second volume of metal * 1 where Vj is the speed of the strip at the exit of the i-th mill stand.

pt _ _ ’(4) where Vo is the speed of the strip at the mill entrance (the linear speed of the mill itself is taken as the speed of the strip at the mill exit).

Taking into account (3) and (4), formula (2) is expressed in the following form (S) (3)

2α

V4

In the proposed device, the determination of ΗΗβΙί ^ χγ-g is made by similar blocks that differ only in the speeds of the stands necessary for the calculation.

To determine the slowdown path relative to different stands, the following values of speed ^ BX ^ 0 'are necessary

Ch-L-it \ 1LaLd · (6)

This goal is achieved by heme, that a device containing four blocks of multiplication, five blocks of speed control of the motors of the stands, two tasks of speed, the first pecking, a block of speed control of the mill, characterized in that it additionally contains a speed sensor, a sensor for fixing the weld, a block for determining the beginning of the deceleration of the mill, five jump sensors of the rolling force, five blocks for calculating the ways of deceleration of the welded. of the seam, six keys, four discriminators of the sign of the comparison result, the key block, the control block of the key block, the block for determining the moment the seam passes through the stand, the first input of the block for calculating the ways of slowing down the weld joint · is connected to the output of the speed sensor, the second and third inputs are connected respectively with the output of the mill speed control unit and with the first input of the first speed setter, the first, second and third inputs of the second block for calculating the weld deceleration paths are connected respectively to the output of the first block multiplying by the output of the mill speed control unit and with the first input of the first speed adjuster, the first, second, third and fourth inputs of the third block for calculating the weld deceleration paths are connected respectively to the output of the first multiplication block, the output of the second multiplication block, the output of the mill speed control unit, the first input of the first speed adjuster, the first, second, third, fourth and fifth inputs of the fourth block for calculating the weld deceleration paths are connected respectively to the output of the first multiplication block, the output of the second a multiplying unit multiplying the output of the third unit, the output control unit mill speed, the first vho-. the house of the first speed adjuster, the first, second, third, fourth, fifth and sixth inputs of the fifth block for calculating the weld deceleration paths are connected respectively to the output of the mill speed control unit, the outputs of the first, second, third and fourth multiplication blocks, the first input of the first speed adjuster, the output of the first block of calculating the ways of slowing down the weld is connected to the first input of the first discriminator of the sign of the result of the comparison and with the second input of the block determining the beginning of the deceleration of the mill, the output of the second block of calculation Utey deceleration weld connected to the second input of the first discriminator mark D

831253 6 of the comparison result and with the first input of the second key, the inputs of the first third and fourth keys are connected respectively to the outputs of the third and fourth blocks of calculating the deceleration paths, the second and third inputs of the second, third and fourth keys are connected respectively to the outputs of the third, fourth and fifth blocks of calculation ways to slow down the weld and with the outputs of the first, second and third discriminators of the sign of the comparison result, the first and second inputs of the fifth key are connected respectively to the output of the fifth block of calculation Tei deceleration weld and fourth output discriminatory _<5 Natori sign comparison result, the first and second inputs of the second, third and fourth comparison result sign discriminators are respectively connected to first and second vkodami ₂₀ respectively the second, third, fourth minutes key outputs the first, second, third and fourth comparison result sign discriminators are connected to a first input of determining when che pass weld _/ cut ₅ stand, the first outputs of the second, third and fourth keys and output pyato a key connected to the second input of the deceleration start determination mill, vhod'kotorogo first sensor ₃₀ is coupled to the weld fixing, and an output - to a second · 'sixth key input, the first input of which is connected to a first output determining when passing through the seam roll stand, the second output of which is connected to the first input of the seventh key, the second input of which and the second input of the unit for determining the moment of passage of the seam through the stand are connected to the outputs of the first, second, third, fourth and fifth sensors of the jump in rolling force, outputs the sixth and seventh keys are connected respectively to the first and second inputs of the key control unit, the first output of which is connected to the first ₄₅ input of the key block, the inputs of the first, second, third, fourth and fifth keys making up the key block are connected respectively to the output of the speed sensor, the output the first block of multiplication is ₅₀ , by the output of the second block of multiplication, by the output of the third block of multiplication, by the output of the fourth block of multiplication, the outputs of the keys of the block of keys are connected to the second input of the first speed controller, 55 output of which The key is connected to the first input of the first key, the second input of which is connected to the second output of the key management unit.

In addition, the unit for calculating the ways of slowing down the weld contains a divider, quadrator, three multiplication units, two inverters, three adders, the first, second, third and fourth inputs of the divider being connected respectively to the outputs of the first, second, third and fourth multiplication units, the first one the second, third and fourth outputs of the divider are connected respectively to the first, second, third and. the fourth inputs of the quadrator and with the first, second, third and fourth inputs of the third adder, the fifth input of the quadrator is connected to the first input of the first speed controller, the first output of the quadrator is connected to the first input of the first multiplication unit, the second input of which is connected to the second, third and fifth quadrature codes , the third input of the first multiplication unit is connected to the output of the mill speed control unit, the output of the first multiplication unit is connected to the input of the first inverter, the code of which is connected to the first input of the first adder, The second input of which is connected to the output of the mill speed control unit, the first adder code is connected to the first input of the second multiplication unit, the second input of which is connected to the speed sensor output, the second multiplication unit is connected to the first input of the second adder, the second input of which is connected to the output of the third the adder, the first input of which is connected to the input of the third adder, the first input of which is connected to the input of the speed sensor, the second input of the third multiplication unit is connected to the output of the second inverter, the input to orogo vkodom connected to the third adder, the second adder output is vkodom calculation unit weld deceleration tract.

The discriminator of the sign of the result of the comparison contains a comparison unit and a discriminator of the sign, the inputs of which are connected to the inputs of the calculation blocks for slowing down the weld seam, the input of the comparison unit is connected to the input of the sign discriminator.

In Fig.1 presents a block diagram of the proposed device; in FIG. 2 the internal structure of the block calculation of the ways of slowing down the weld; in FIG. 3 - internal structure of the discriminator of the sign of the comparison result.

Blocks 1 control the speed of the motors of the stands have input multiplication blocks 2, the first input of which is connected to the input of the block 3 control the speed of the mill, and the second input with settings 4 of the ratio of the speeds of the stands.

Sign control unit 1 of the last stand connected to the output control unit 3, which has a feedback che second cut ⁵ the dial and speed 5 the first key 6, the speed sensor 7 output is connected to a first input of the first calculating unit 8 weld deceleration ways and with the first key key block 9, the second and third inputs of the first block 8 are connected respectively to the output of the mill speed control block 3 and to the first input of the first speed setter 10, the first, ₁₅ second and third inputs of the second block 8 are connected respectively to the output of the first block 2 multiplication, by the output of the mill speed control unit 3 and with the first input of the first speed adjuster 10, _{20 the} first, second, third and fourth inputs of the third unit 8 are connected respectively to the output of the first multiplication unit 2, the output of the second multiplication unit 2, the output of the speed control unit 3 _{25 of the} mill, the first input of the first speed controller 10, the first, second, third, fourth and fifth inputs of the fourth block 8 are connected respectively to the output of the first block 2 of multiplication, the output of the second j ₀ block of 2 multiplication, the output of the third block 2 of multiplication I, the output of block 3 and the first input of the first speed controller 10, the first, second, third, fourth, fifth and sixth inputs of the fifth block 8 are connected respectively to the output of block 3, the outputs of the first) second, third and fourth multiplication blocks 2, the first input of the first speed setter 10, the output ₄₀ of the first block 8 is connected to a first input of the first discriminator 11 mark the comparison result, a second input coupled to an output of the second unit 8, the output of the first discriminator 11 is connected to a third input ₄₅ of the first switch 12, first and second inputs to torogo sootvegstdenno connected to the outputs of the second and third blocks of 8 * first and second inputs of the second switch 12 are respectively connected to _S q tsy- moves the third and fourth block 8, first and second inputs of the third switch 12 are connected to the outputs of the fourth and fifth blocks 8, the first input the fourth key 12 is connected to the output of block 8, 55 the third inputs of the second, third and fourth keys 12 are connected respectively to the outputs of the second, third and fourth discriminators 11, the first and second inputs of the second, third and fourth discriminators 11 are dined with the first and second outputs of the first, second and third keys 12, the output of the first block 8, the first outputs of the first, second and third keys 12, the output of the fourth key 12 are connected to the second input of the block 13, the outputs of the four discriminators 11 of the comparison result sign are connected to the first input of the block 14 determine the moment of skipping seam - cut stand, the first input of block 13 is connected to the output of the sensor 15 for fixing the weld, the outputs of the sensors 16 jump in the rolling force are connected to the second input of the unit. 14 and with the second input of the seventh key 17, the output of which is connected to the second input of the key management unit 18, the first input of which is connected to the output of the sixth key 19, the first and second inputs of which are connected respectively with the first output of block 14 and with the output of block 13, the second the output of block 14 is connected to the first input of the seventh key 17, the first output of block 18 is connected to the first input of block 9 of the keys and to the second input of the first key 6, the second key of block 9 of the keys is connected to the output of the first block 2 of the multiplication, the third, fourth and fifth fifth keys of the block 9 keys with dineny respectively to the outputs of the second, third and fourth multiplying units 2, the key unit 9 outputs key input connected to the second speed setter 10.

The internal set of elements of block 8 for calculating the deceleration path of the weld is determined by the operations performed according to expression (5), and is presented in FIG. 2.

The list of values received at the input of the divider 20 is determined by the number of the stand, relative to which it is determined (6). The outputs of the divider 20 are connected to the respective inputs. adder 21, where the term b 1 / Vj of expression (5) is formed and the corresponding inputs of quadrator 22. The values of Vj, Vjjj are supplied to the inputs of multiplication block 23, and the output of quadrator 22 corresponds to the number of the stand reduced by one, which determines the deceleration path using the expression ( 5).

The output of block 23 is connected to the input of the inverter 24.

The input of the adder 25 receives the * value Vj and the value - V5 is taken from the output of the inverter 24 (Й The value Vq is supplied to one input of the multiplication block 26, and the other input of the block 26 is connected to the output of the block 24.

The output of block 21, through an inverter 27, is connected to the input of block 28. Multiplication by a constant. The other input to block postu- ₅ paet value 'ίο.

The input of the adder 29 is connected to the output of the block 28. Another input of the adder 29 is connected to the output of the block 28.

From the output of the adder 29, the value of the deceleration path relative to 1 mill stand is removed.

The device operates as follows.

At the operating rolling speed, the first · key 6 is in a position when the second speed control unit 5 is turned on in the feedback of the control unit 3. In blocks 8 definitions are calculated ways to slow down the seam in front of the mill according to the expression (2). In the discriminators 11, the deceleration paths are compared, and the maximum of them through the corresponding key 12 is fed to the second input of the determination unit 13, and the number of the corresponding stand is fed to the first input of the determination unit 14.

At a certain distance of the seam to the first stand, the determination unit 13 from the signals of the sensor 15 compares the distance of the seam to the first stand with the maximum value of the deceleration path. In block 13 determining the moment the start of deceleration (Fig. 1) is stored the distance to the next seam. When these values coincide, the sixth key 19, and js, opens. the number of the stand, relative to which the maximum deceleration path is obtained, arrives at the first input of control unit · 18 of the control. At the signal of the control unit 18, the corresponding key is closed from the key block 9 is entered into the block 13 by the operator of the mill, or automation from the roll support system on the mill. According to the signals of the sensor 15, this value decreases.

The determination of the start time of deceleration is made by comparing the actual distance to the next seam with the maximum deceleration path according to expression (7)

At the moment Д1 »О, an impulse signal appears at the output of block 13, I close it. Sixth key 19.

The determination of the value begins after the mill reaches the steady rolling mode, after refueling.

831253 10 strips of a new roll, or rolling of the next seam.

The result of the operation in discriminator 11 is the presence or absence of a pulse signal at the output of the block.

For example, with (Fig. 1), the pulse (single) signal closes the key 12 of the next comparison block for the duration of the comparison, and is summed with the contents of block 14..

If, then there is no impulse signal at the output of the comparison unit, it enters the unit for determining the moment of deceleration of the mill and further search is terminated.

The internal structure of discriminator 11 is shown in FIG. 3. ' The corresponding inputs of the comparison unit 30 receive the values from the outputs of the unit 8 for determining the deceleration path of two adjacent stands. Are you the result of the comparison? the value (8) of the stand, the stripe (9) (Ή) at the output of block 30.

The output of block 30 is connected to a sign discriminator 31. If 0, a pulse signal corresponding to Ί 'appears at the output of discriminator 31. If d <0, there is no signal at the output of discriminator 31.

When reducing the actual distance to the next seam, to the value of the maximum deceleration path, the sixth key 1.9 closes and the stand number generated in block 14 enters block 18. Block 18 controls the key block 9 (Fig. 1).

For example, if the maximum deceleration path is determined relative to the third stand, then the number of this stand is formed by the signals of discriminators 11 'in block 14. When the sixth key 19 is closed, the number of the “critical” (third) stand is supplied to block 18 — key management. At the signal of block 18, the first key 6 is thrown, and in block 9 a third key is closed (from above), which will include a speed controller 10 in the feedback of block 3 and the output of the second multiplication block 2, which corresponds to the speed of entry into the third stand. At the input of block 3 there is a mismatch signal

After working out the mismatch ^V lu) (s) and the speed of the mill and

The moment of fulfillment of equalities (10), (11) coincides with the passage of the seam through the critical (third) stand.

By the pulse signal resulting from a jump in the force at the moment the seam passes through the stand, from the output of the sensors 16 of the jump in the rolling force, the contents of block 14 are reduced by one. In this case, new information is not received in block 18, since the sixth key 19 is locked only for a short time necessary for performing operations; ny with the beginning of the slowdown of the seam in front of the mill.

When the contents of block 14 becomes 15 equal to O, which corresponds to the passage of the seam through the critical stand, the seventh key 17 is closed, and the signals of the sensors 16 jump in the rolling force are sent to the other input of the block 18. For each of these 20 signals, the initial contents of block 18 are built up, which further controls block 9 as the seam passes through the remaining stands of the mill. This control consists in alternately closing the corresponding keys and connecting in the feedback block 3, the outputs of the blocks 2 multiplying the respective stands. In this case, only one 30 of the keys of block 9 can be closed,

By the signal of the sensor 16 of the jump in the rolling force of the last stand, the contents of block 18 are again increased, as a result of which the information in block 18 35 corresponds to the passage of the seam through the last stand of the mill. According to this information, block 18 switches the first key 6 to the comparison element of the setter 5 and opens the keys 9. The mill accelerates to a predetermined speed of 40.

253 12th seam, six keys, four discriminators of the sign of the comparison result, key block, control block of the key block, block for determining the moment the seam ₅ passes through the stand, and the first input of the block for calculating the ways of slowing down the weld is connected to the output of the speed sensor, the second and third inputs connected respectively to the output of the mill speed control unit and to the first input of the first speed adjuster, the first, second and third inputs of the second block for calculating the weld deceleration paths are connected respectively to the output of the first block The output of the mill speed control unit and with the first input of the first speed adjuster, the first, second, third and fourth inputs of the third unit for calculating the weld deceleration paths are connected to the output of the first multiplication unit, the output of the second multiplication unit, and the output of the mill speed control unit the first input of the first speed adjuster, the first, second, third, fourth and fifth inputs of the fourth block for calculating the weld deceleration paths are connected respectively to the output of the first multiplication block, w output of the multiplication unit, the output of the third unit of multiplication, the output of the mill speed control unit, the first input of the first speed setter, the first, second, third, fourth, fifth and sixth inputs of the fifth unit for calculating the weld deceleration paths are connected respectively to the output of the mill speed control unit, the outputs the first, second, third and fourth blocks of multiplication, the first input of the first speed adjuster, the output of the first block for calculating the ways of slowing down the weld is connected to the first input of the first discriminator

Claims (3)

invention relates to control. rolling production, in particular to cold rolling mill control systems.  A device for automatically controlling the rolling of the ends of the strip, comprising the chip of the multiplication unit, five blocks of speed control, is known. stands, two speed adjusters, first key, mill speed control unit  A disadvantage of the known device is that it does not take into account the rolling program of a specific coil, as a result of this, for a number of rolling programs, the weld (or the end of the strip) will be passed through the stands of the mill at a speed higher than the set one, which may damage the rolls , obršu strip in the place of welding and loss of productivity j mill.  Indeed, if the seam at a given speed entered the first stand of the mill, then the minimum speed of the strip can be reached at our can, where in any of the remaining stands, the passage of the seam with continuous speed is described by the expression "(1-iirjT V ( 1 - cage number; -the ratio of mill speed to.  appropriate speed - speed of the strip at the mill output to the speed of the strip at the entrance to the mill; - tempo of acceleration (grounding) of a sgan; inter-spacing distance; -General speed of rolling of a svaryugo seam (or end of a strip).  Invention - increasing the mill productivity and reducing the number of strip breaks.  For this, the proposed device controls the speed of the mill with respect to the stand for which at 1, -. . ), U X T where VQY is the width of the mill, the maximum value of the path for slowing the seam is obtained while reducing the speed of the strip at the entrance to the cage from the current to the given one.  The operation of the proposed device is based on the calculation by expression (2) of Lig values for all mill stands.  The value of the ground path take the value NVmotxtUftyi And -, 2- - P, where n is the number of mill stands.  The parameters of TC and O (participating in expression (2)) are constant for the x-secret mill, on.  The values of Vg-w are given by the mill operator.   The values of t t / bs are determined in the course of calculating the deceleration path of the weld before the stanrm.  From the calculation of the preservation of the second volume of metal i V, where the speed of the strip at the exit of the i-th mill stand.  SJL O-l (4 where Vo is the speed of the strip at the entrance to the camp (for the speed of the strip at the exit of the stand, it is assumed to be linear to the stand itself).  Taking into account (3) and (4), the formula (2) in razits in the following form V, y, S, V, (S &amp; CG o in the proposed device definition CO - Ugy, r - is produced by similar blocks, differing only values of the scaffolding of the stands, are necessary for me to calculate.  To determine the deceleration path relative to different stands, it is necessary; The following speeds, V5, Vui, V,. . L2 8X4-V 5iVu ,, V ,, V2, Y3 Uav VO. M; , V. , V3, V4.  The goal is achieved by the fact that the device contains the chip of the multiplication unit, five blocks of speed control for the engines of the stands, two dial gauges, the first key, the mill speed control block, characterized in that it additionally contains a speed sensor.  Weld fixation sensor, slow start and mill detection unit, five rolling force jump sensors, five blocks for calculating the deceleration paths welded.  the seam, six keys, the discriminator code of the comparison mark, the key block, the key block control block, the block for determining the moment of the weld pass through the cage, the first input of the block for calculating the weld retardation paths connected to. The output of the speed sensor, the second and third inputs are connected respectively to the output of the mill speed control unit and to the first input of the first speed limiter; the first, second and third inputs of the second block for calculating the weld retardation paths are respectively connected to the output of the first multiplication unit, the output of the mill speed control unit and with the first input of the first setpoint speed, the first, second, third and fourth inputs of the third block for calculating the paths of deceleration of the weld are connected respectively with the output of the first block y The output of the second multiplication unit, the output of the mill speed control unit, the first input of the first speed master, the first, second, third, fourth and fifth inputs of the fourth block for calculating the weld retardation paths, respectively, are connected to the output of the first multiplication unit, the output of the second multiplication block, the output of the third multiplication unit, the output of the mill speed control unit, the first input of the first speed master, the first, second, third, fourth, five and sixth inputs of the fifth block for calculating the deceleration paths the seam is connected respectively to the output of the control unit of the mill, the outputs of the first, second, retego and fourth multiplication units, the first input of the first velocity generator, the output of the first calculation block of the weld amydling paths and the second input of the comparison result symbol determining the start of deceleration, the output of the second block for calculating the weld seam paths is connected to the second stroke of the first discriminator of the comparison result symbol and to the first input of the second key, The first third and fourth keys are connected to the outputs of the third to fourth blocks of the calculation of deceleration paths, the second and third inputs of the second, third and fourth keys are connected respectively to the outputs of the third, fourth and fifth blocks of the calculation of the paths of slowing the weld, and to the outputs of the first, the second and third discriminators of the mark of the result of the comparison, the first and second inputs of the fifth key are connected respectively to the output of the fifth block of calculation of the ways to slow down the weld and to the output of the fourth dis the discriminator of the comparison result sign, the first and second inputs of the second, third and fourth discriminators of the result sign cf are connected respectively with the first and second outputs of the second, third and fourth keys, respectively, the outputs of the first, second, third and fourth discriminators of the comparison result sign connected to the first input of the unit for determining the time of the pass of the seam through the cage, the first outputs of the second, third and fourth keys and the code of the fifth key are connected to the second input of the beginning definition block slowing down the mill, the first input of which is connected to the sensor of fixation of the weld, and the output - with the second. the input of the sixth key, the first input of which is connected to the first output of the block for determining the time of the weld pass through the cage, the second output of which is connected to the first input of the seventh cylinder,. The second input of which and the second input of the unit for determining the moment of the weld pass through the cage are connected to the outputs of the first, second, third, fourth and fifth sensors of the rolling force jump, the outputs of the sixth and seventh keys are connected respectively to the first and the inputs of the key management unit, the first output of which is connected the first input of the key block, the inputs of the first, second, third, fourth, and fifth keys constituting the key block are connected respectively to the scan code, the output of the first multiplication block, and the output second multiplying unit, multiplying the output of the third unit, the output of the fourth multiplication unit, outputs the key block of keys connected to the second input of the first set point speed, the output of which is connected to the first input of the first switch, the second input of which is connected to the second vkodom unit key management.  831 3 In addition, the deceleration path calculation module for the weld contains a divider, quad, three multiplication units, two inverters, three adders, the first, second, third and fourth inputs of the divider are connected respectively to the outputs of the first, BTqDoro, third and fourth multiplication blocks, the first, second, third and fourth outputs of the divider are connected respectively to the first, second, third and.  the fourth inputs of the quad and the first, second, third and fourth inputs of the third adder, the fifth input of the quad is connected to the first input of the first speed controller, the first output of the quad is connected to the first input of the first multiplication unit, the second input of which is connected to the second, third and fifth by the outputs of the quadrant, the third input of the first multiplication unit is connected to the output of the mill speed control unit, the output of the first multiplication unit is connected to the input of the first inverter, whose code is connected to the first input of the first adder , the second entrance is connected to the code.  the mill speed control unit, the first adder code is connected to the first input of the second multiplication unit, the second input of which is connected to the output of the speed sensor, the BTqjoro code of the multiplication unit is connected to the first input of the second adder, the second input of which is connected to the third adder code, the first the third input of which is connected to the third adder code, the first input of which is connected to the output of the speed sensor, the second input of the third multiplication unit is connected to the second inverter code, the input of which is connected to the third sum code torus vkoD vtsrogo adder is vkodom paths calculation unit zamedlenv weld.  The discriminator of the sign of the result of the equation contains the comparison unit and the discriminator of the sign, the inputs of the coaster are connected to the codes of the BLS of the calculation of the ways to slow down the weld, the code of the comparison block is connected to the input of the discriminator of the sign.  FIG. D presents the block diagram of the proposed device; in fig.  2 internal structure of calculation of ways to slow down the weld; FIG. 3 shows the internal structure of the discriminator of the mark of the comparison result.  The units 1 of the speed control of the stand motors are joined at the input by the multiplication units 2, the first input of which is connected to the code of the speed control unit 3 from the convoy, and the second input with the settings for the speed ratio of the stands.  The input of the unit 1 utflavleny the last stand is connected to the output of the control unit 3, which has feedback through the second speed setting unit 5 and the first key 6, the output of the sensor 7 of the scraper 7 is connected to the first input of the first calculation unit 8 of the weld retardation paths and keys, the second and third inputs of the first block 8 are connected respectively to the output of the SSC control unit 3 of the mill and to the first input of the first setpoint 10 speeds, the first, second and third inputs of the second block 8 are connected respectively to the output of the first block 2 the multiplication, output of the mill speed control unit 3 and the first input of the first speed setpoint device 1, the first, second, third and fourth inputs of the third unit 8 are connected respectively with the output of the first unit 2 multiply, the output of the second multiplication unit 2, the output of the control unit 3 . The first mill, the first input of the first setpoint 10 speed, the first, the third, the fourth and the fifth inputs of the fourth block 8 are connected respectively to the output of the first multiplication unit 2, the output of the second multiplication unit 2, the output of the third multiplication unit 2, the output of unit 3 and the first input of the first setpoint speed 10, the first, second, third, fourth, fifth and sixth inputs of the fifth block 8 are connected respectively with the output of block 3, the outputs of the first; the second, third and fourth multiplication units 2, the first input of the first speed setting unit 10, the output of the first block 8 is connected to the first input of the first discriminator 11 of the comparison result, the second input of KOTqjoro is connected to the output of the second block 8, the output of the first discriminator 11 is connected to the third input of the first key 12, the first and second inputs of which are connected respectively to the outputs of the second and third blocks 8, the first and second inputs of the key 12 are connected respectively to the outputs of the third and fourth blocks 8, the first and second inputs The third key 12 is connected to the outputs of the fourth and fifth blocks 8, the first input of the fourth key 12 is connected to the output of block 8, the third inputs of the second, third and fourth keys 12 are connected respectively to the outputs of the second, third and fourth discriminators 11, the first and second inputs the second, third and fourth discriminators 11 are connected to the first and second outputs of the first, second and third keys 12, respectively, the output of the first block 8, the first codes of the first, second and third keys 12, the code of the fourth key 12 are connected to By the entrance of the block 13, the outputs of the discriminators 11 of the comparison mark are connected to the first input of the block 14 for determining the time of the weld pass through the stand, the first input of the block 13 is connected to the output of the weld fixation sensor 15, the outputs of the jump force 16 sensors are connected to the second input block  14 and with the second input of the seventh lockbox 17, the output of which is connected to the second input of the key management unit 18, the first input is kotorotch. - connected to the output of the sixth key 19, the first and second inputs of which are connected respectively to the first output of block 14 and to the output of block 13, the second output of block 14 is connected to the first input of the seventh key 17, the first output of block 18 is connected to the first input of block 9 of Keys and with BTqjbiM input of the first key b, the second key of the key block 9 is connected to the output of the first multiplication unit 2, the third, fourth and fifth keys of the key block 9 are connected respectively to the outputs of the second, third (its and fourth multiplication blocks 2), outputs of the keys of the 9 key block connected to tue eye setpoint input 10 sksrosti.  The internal set of elements of the block 8 for calculating the weld retardation path is determined by the operations performed by expression (5), and is presented in FIG.  2  The list of inputs to the input of the splitter 20 is determined by the number of the stand relative to which Lgy is determined (6).  The outputs of the divider 20 are connected to the corresponding inputs.  a summatra 21, where the summand is formed L 1 / -t of expression (5) and the corresponding inputs of the quadrant 22.  The inputs of the multiplication unit 23 receive the values Vj, V and the code of the quadrant 22, corresponding to the number of the cage reduced by one, the relative of which is determined by the retardation scroll by the expression (5).  The output of unit 23 is connected to the input of inverter 24.  The input of the adder 25 is the value of Vg and the value of the output is taken from the output of the inverter 24, Us (I) The VQ value is fed to one INPUT of the multiplication unit 26, and the other input of the unit 26 is connected to the output of the unit 24.  The output of the block 21, through the inverter 27 is connected to the input of the block 28. multiply by a constant.  To another input of the block, the value of VQ is posted.  The input of the adder 29 is connected to the output of the block 28.  The other input of the adder 29 is connected to the output of the block 28.  From the input of the adder 29, the value of the slowdown path is removed. regarding 1 mill stand.  The device operates in an abbreviated manner. At the operating rolling speed, the first key 6 is in the position where, in feedback, the control unit 3. The second setpoint adjuster 5 is turned on.  In determination block 8, the ways of slowing down the seam in front of the mill are calculated by expression (2).  In discriminators 11, the retardation paths are compared, and the maximum of them is passed through the corresponding key 12 to the second input of the determination unit 13, and the number of the corresponding stand enters the first input of the determination unit 14.  At a certain weld distance to the first stand, the determination unit 13, using the signals of sensor 15, compares the weld distance to the first stand with the maximum value of the retardation path.  In block 13, the determination of the moment of the start of the deceleration (Fig.  1) the distance value of the next seam is stored.  When the indicated values coincide, the sixth key 19 is opened, and the number of the stand, relative to which the maximum retardation path is obtained, arrives at the first input of the control block 18.  On a signal from the control block 18, the corresponding key from the key block 9 is entered into the block 13 by the operator of the mill, or the automation from the roll tracking system on the mill.  According to the signals of the sensor 15, this value decreases.  Determination of the moment of the beginning of deceleration is made by comparing the actual distance to the next weld with the maximum path of deceleration in terms of the expression B vnaii At the moment D 4 O, a pulse signal appears at the output of block 1: L, short-circuit.  the sixth key 19.  Determination of the value of B ay nvAit naats after the mill has entered the established rolling mode, after refueling a strip of a new coil, or rolling the next seam.  The result of the operation in the discriminator 11 is the presence or absence of a pulse signal at the output of the block.  For example, when lj-2. b (fig. 1) the impulse (single) signal closes for the comparison time the key 12 of the next comparison block, and is summed with the contents of the block 14. .  If b t-1-j, then there is no pulse signal at the output of the comparator unit, b arrives at the deceleration unit for determining the deceleration time of the mill, and further search stops.  The internal structure of the discriminator 11 is shown in FIG.  3  Values from the outputs of block 8 for determining the deceleration path of the two adjacent stands are fed to the corresponding inputs of the comparison block.  The result of the comparison is the value (g) on the code of the DA.  The output of the PA block is connected to the discriminator 31 characters.  If LLO, the output of the discriminator 31 is a pulse signal corresponding.  If dO, the signal to the discriminator 31 is missing.  When the actual distance to the next weld is reduced, to the value of the maximum retardation path, the sixth key 19 closes and the stand number formed in block 14 enters block 18.  Block 18 controls key block 9 (FIG. one).  For example, if the maximum retardation path is determined relative to the third stand, then the signals from the discriminators 11 in blSge 14 form the number of this stand.   the closure of the sixth key 19, the critical number (gg) of the cage enters block 18 - key management.  The first key 6 is transferred by the signal of block 18, and the third key (top) is closed in locker 9, which, in feedback of block 3, turns on the setpoint 1O of speed and the output of block 2 multiply the second stand, which corresponds to the speed of entry of the band into the third stand.  The input of block 3 receives the error signal. -Y After working off the mismatch Wu.  and the speed of the mill V ш at-i) P63 The moment of fulfillment of equalities (Yu), (11) coincides with the pass of the seam through the critical (third) stand.  According to the pulse signal, which is the result of a jump in force at the moment of the seam passing through the cage, from the output of the sensors 16 in the jump force, rolling the contents of block 14. reduced by one.  In this case, the new information in block 18 does not arrive as the sixth key 19 is closed only for a short time required to perform the operations associated with the beginning of the deceleration of the seam in front of the mill.  When the contents of block 14 become equal to O, which corresponds to the passage through the critical stand, the seventh key 17 is closed, and the signals of load 16 jump sensors 16 are fed to another input of block 18.  For each of these signals, the initial content of block 18 is increased, which further controls block 9 as the seam passes through the remaining mill stands.  This control consists in alternately locking the corresponding keys and connecting in feedback block 3, the outputs of block 2 multiplying the corresponding stands.  In this case, only one of the keys of block 9 can be closed.  The signal from the sensor 16 for the jump in rolling force of the last stand again increases the content of block 18, as a result of which the information in block 18 corresponds to the passage of the seam through the last stand of the mill.  According to this information, the block 18 switches the first key 6 to the comparison element of the setter 5 and opens the keys 9.  The mill is set to a predetermined speed.  Claim 1.  An automatic mill control device in the weld rolling mode, containing the head of the multiplier unit of five stands speed control units, two setters, first key, mill speed control block, characterized in that, in order to increase mill productivity and reduce strip breaks, it additionally contains a speed sensor, a sensor for fixing the weld, a unit for determining the beginning of the mill slowing down, five jump force sensors for rolling force, and 5 blocks for calculating the paths for slowing the weld-3112 weld, six keys the discriminator of the mark of the comparison result, the key block, the key block control block.  the unit for determining the time of the weld pass through the cage, the first input of the block for calculating the deceleration paths of the weld is connected to the output of the speed sensor, and the third inputs are connected respectively to the output of the mill speed control unit and the first input of the first speed controller, the first, second and third inputs of the second block calculation of the weld retardation paths are connected respectively with the output of the first multiplication unit, the output of the mill speed control unit and the first input of the first speed generator, first, second, third, and fourth The third inputs of the third unit for calculating the deceleration paths of the welded are connected respectively to the output of the first multiplication unit, the output of the second multiplication unit, the output of the mill speed control unit, the first input of the first speed setter, the first, second, third, fourth and fifth inputs of the fourth block for calculating the paths nor welded w. Va are connected respectively to the code of the first multiplication unit, the output of the second multiplication unit, the output of the third multiplication unit, the output of the mill speed control unit, the first input of the first speed setter, the first, second, third, fourth, fifth and sixth inputs of the fifth slowdown unit the weld joint is connected to the output of the mill speed control unit, the outputs of the first, second, third and fourth multiplication units, the first input of the first speed generator, the output of the first paths calculation block The weld joint is connected to the first input of the first discriminator of the comparison result sign and to the second input of the mill start detection, the output of the second block for calculating the deceleration paths of the weld is connected to the second input of the first discriminator of the comparison result sign and the first input of the second key, the inputs of the first , the third and fourth switches of the connection to the outputs of the third and fourth blocks of the calculation of the slowdown paths, the second and third inputs of the second, third and fourth keys are connected respectively, with the codes of the third, fourth, and fifth blocks for calculating the paths for slowing the weld and with the outputs of the first, second, and third discriminators of the comparison result sign, the first and the second inputs of the fifth key are connected respectively with the output of the fifth block for calculating the paths of deceleration of the weld and with the output of the fourth discriminator of the mark of the comparison result, the first and second inputs of the second, third and fourth discriminators of the mark of the comparison result are connected respectively with the first and second outputs of the second, respectively, the third and fourth keys, the outputs of the first, second, third and fourth discriminators of the mark of the comparison result are connected to the first input of the moment definition block; the seam through the cage, the first outputs of the second, third, fourth, and fifth key outputs are connected to the second input of the mill start deceleration detection unit, the first input of which is connected to the weld fixation sensor, and the vysod to the second input of the sixth key, the first input of which is connected to the first output of the block for determining the moment of passing a seam through a cage, the secondary output of which is connected to the first input of the seventh key, the second input of which and the second input of the block for determining the moment of passing the seam through the cage are connected to the codes of the first, second th, third, fourth and fifth jump rolling force sensors, the outputs of the sixth and seventh key sootvegstvenno connected to first and second input keys of the control unit, the first output kotsrogo connected to the first input blszha keys, inputs the first, second, third, 35 the fourth, fifth keys constituting the key block are connected respectively to the output of the speed sensor, the output of the first multiplication block, the output of the second multiplication block, the code of the third multiplication block, the output of the fourth multiplication block, the key outputs of the key block are connected to the second input of the first speed master, the output of which is connected to the first input of the first key, to the input of which is connected to the second input of the key management unit. 2. The device according to claim 1, which is designed so that the calculation of the paths for slowing the weld contains a divider, a quadrant, three multiplications, two inverters, three adders, and the first one. The secondary, third and fourth inputs of the divider are connected respectively to the overhead of the first, second, third and fourth multiplication blocks, the first, second, third and fourth outputs. The separator is connected to the first, second, rperbmvj and fourth quadrants, respectively, and the first, second, third and the fourth inputs of the third summatra, the fifth input This is connected to the output of the third adder, the output of the second adder is the code for calculating the paths to slow down the weld. 3. The device according to claim 1, stating that the discriminator of the mark of the comparison result includes a comparator and the discriminator of the mark, the inputs of which are connected to the outputs of the block for calculating the deceleration path of the weld, the output of the block Comparison is connected to the input of the discriminator mark. Sources of information, 1fin5ggye into account during the examination 1. USSR author's certificate N9 418239, cl. In 21 37/00, 1974., the quad is connected to the first terminal of the airstriver speed controller, the first output of the quadrant is connected to the first input of the first multiplication unit, the second input of which is connected to the second, third, fourth and fifth outputs of the quadrator, the third input The first multiplication unit is connected to the output of the mill speed control unit, the output of the first multiplication unit is connected to the input of the first inverter whose output is connected to the first input of the first adder, the second input to which is connected to the output of the mill speed control unit, output n The first adder is connected to the first input of the second multiplication unit, the second input of which is connected to the output of the sensor, the output of the second multiplication unit is connected to the first input of the second adder, the second input of which is connected to the output of the third adder, the first input of which is connected to the output of the third adder, the first input which is connected to the output of the speed sensor, the second input of the third multiplication unit is connected to the code of the second inverter, the input