SU858967A1

SU858967A1 - System for automatic stabilizing of technological parameters at cold rolling in reversible mills

Info

Publication number: SU858967A1
Application number: SU782665069A
Authority: SU
Inventors: Леонид Абрамович Данилов; Геннадий Евгеньевич Трусов; Юрий Михайлович Рыбьев
Original assignee: Центральное Проектно-Конструкторское Бюро Всесоюзного Объединения "Союзпромавтоматика"
Priority date: 1978-09-20
Filing date: 1978-09-20
Publication date: 1981-08-30

Description

Изобретение относится к автоматизации прокатного производства, преимущественно к холодной прокатке рулонов.The invention relates to automation of rolling production, mainly for cold rolling of rolls.

Наиболее близким к предлагаемой по технической сущности и достигаемо- ⁵му результату является устройство для автоматического регулирования толщины полосы на стане холодной прокатки и дрессировки, содержащее датчики толщины и скорости, блок регулирования положения нажимных устройств, датчик толщины полосы на входе в клеть, измеритель скорости входящей в клеть . полосы, первый и второй блоки деления,^ первый элемент сравнения, переключатель, задатчик номинального значения толщины выходящей из клети полосы, задатчик номинального значения толщины входящей в клеть полосы, причем выход задатчика номинального значения толщины выходящей из клети полосы и выход задатчика номинального значения толщины входящей в клеть полосы с.оеди2 йены соответственно с первым и вторым входами первого блока деления, выходы измерителей скорости входящей и выходящей из клети полосы соединены соответственно с первым и вторым входами второго блока деления £1 j.Closest to the proposed technical essence and the achieved result ⁵ is a device for automatically controlling the strip thickness in a cold rolling and training mill, comprising thickness and speed sensors, a block for adjusting the position of the pressure devices, a strip thickness sensor at the cage entrance, an incoming speed meter into the crate. strip, first and second division blocks, ^ first comparison element, switch, nominal value thickness gauge leaving the stand of the strip, nominal value thickness gauge of the strip entering the stand, and the output of the nominal value thickness gauge of the strip leaving the stand and output of the nominal thickness input into the crate of the strip of the united2 yen, respectively, with the first and second inputs of the first division unit, the outputs of the speed meters of the incoming and outgoing crates of the strip are connected respectively to the first and torym inputs of the second dividing unit 1 £ j.

Однако при применении измерителя толщины, показывающего отклонение толщины от номинального значения, нельзя определить требуемую величину деформации без учета абсолютного значения толщины полосы на входе в кйеть. ГГрименение измерителей отклонения толщины от номинального значения, а не измерителей абсолютной толщины оправдано тем, что выходное напряжение таких измерителей используется полностью только на отклонение толщины от номинального значения. В случае же использования измерителя абсолютного значения толщины его выходное напряжение ’используется только на 5-10Я, что сии<жает точность регулирования.However, when using a thickness gauge showing the deviation of the thickness from the nominal value, it is impossible to determine the required strain value without taking into account the absolute value of the thickness of the strip at the inlet to the quiet. The use of thickness deviation meters from the nominal value, and not absolute thickness meters, is justified by the fact that the output voltage of such meters is used only to deviate the thickness from the nominal value. If the absolute thickness gauge is used, its output voltage ’is used only for 5–10,, which means that the regulation accuracy is very high.

Цель изобретения - повышение качества полосы.The purpose of the invention is to improve the quality of the strip.

Указанная цель достигается тем, что система, содержащая блок регулирования положения нажимных устройств, датчик толщины полосы на входе в клеть, измеритель скорости входящей в клеть полосы, измеритель скорости выходящей из клети полосы, первый и второй блоки деления, первый элемент сравнения, переключатель, задатчик номинального значения толщины выходящей из клети полосы, задатчик номинального значения толщины входящей в клеть полосы, причем выход задатчика номинального значения толщины выходящей из клети полосы и выход задатчика номинального значения толщины входящей в клеть полосы соединены соответственно с первым и вторым вхо- : дами первого блока деления, выходы измерителей скорости входящей и выходящей из клети полосы соединены соответственно с первым и вторым входами второго блока деления, дополни- тельно снабжены третьим и четвертым блоками деления, вторым элементом сравнения, двумя устройствами ограничения максимального натяжения полосы, двумя блоками регулирования заднего и переднего натяжения, двумя задатчиками натяжения, измерителем отклонения толщины полосы, задатчиком расстояния между измерителем отклонения толщины полосы и клетью, задатчиком положения' нажимных устройств и блоком чем ния блока регулирования заднего натяжения, соединенного с разматывателем, выход второго задатчика натяжений соединен с первым входом второго блока регулирования переднего натяжения, соединенного с моталкой, задатчик положения нажимных устройств соединен с первым входом блока регулирования положения нажимных устройств,выход задатчика расстояния между измерителем отклонения толщины полосы и клетью и выход измерителя скорости входящей в клеть полосы соединены соответственно с первым и вторым входами третьего ·' блока деления, выход которого соединен с первым входом блока регулируемого запаздывания, второй вход которого соединен с выходом измерителя отклонения толщины полосы, выход регулируемого запаздывания, привыход первого задатчика натяжесоединен с первым входом первогоThis goal is achieved by the fact that the system comprising a block for adjusting the position of the pressure devices, a strip thickness gauge at the entrance to the stand, a speed meter of the strip entering the stand, a speed meter of the strip leaving the stand, the first and second division blocks, the first comparison element, switch, master the nominal value of the thickness of the strip leaving the stand, the adjuster of the nominal value of the thickness of the strip entering the stand, the output of the setter of the nominal value of the thickness of the strip leaving the stand and the output of the nom the total thickness of the strip entering the stand are connected respectively to the first and second inputs of the first division block, the outputs of the speed measuring instruments of the strip entering and leaving the stand are connected respectively to the first and second inputs of the second division block, additionally equipped with the third and fourth division blocks , the second element of comparison, two devices for limiting the maximum tension of the strip, two blocks for regulating the rear and front tension, two adjusters of tension, a meter for deviation of thickness strip, the distance adjuster between the strip thickness deviation meter and the stand, the pressure adjuster 'of the pressure devices and the unit of the rear tension adjustment unit connected to the unwinder, the output of the second tension adjuster is connected to the first input of the second front tension adjustment unit connected to the coiler, position adjuster of the pressure devices is connected to the first input of the pressure position adjustment unit, the output of the distance adjuster between the strip thickness deviation meter and the stand th and the output of the speed meter of the strip entering the cage are connected respectively to the first and second inputs of the third dividing unit, the output of which is connected to the first input of the adjustable delay unit, the second input of which is connected to the output of the strip thickness deviation meter, the output of adjustable delay, the output of the first setter connected to the first input of the first

858967 4 блока регулируемого запаздывания через переключатель соединен с первым входом четвертого блока деления, второй вход которого соединен с выходом задатчика номинального значения толщины входящей в клеть полосы, выход первого и выход второго блоков деления соединены соответственно с первым и вторым входами первого элемента сравнения, выход первого элемента сравнения и выход четвертого блока деления соединены соответственно с первым и вторым входами второго элемента сравнения, выход которого соединен с. первыми входами первого и второго устройств ограничения максимального натяжения полосы и со вторым входом блока регулирования положения нажимных устройств, вторые входы первого и второго устройств ограничения максимального натяжения полосы соединены с выходами соответственно первого и второго задатчиков натяжения, Ъыходы первого и второго устройств ог-* раничения максимального натяжения полосы соединены со вторыми входами соответственно первого и второго блоков регулирования заднего и переднего натяжения.858967 4 blocks of adjustable delay through the switch are connected to the first input of the fourth division block, the second input of which is connected to the output of the nominal value of the strip entering the stand, the output of the first and the output of the second division blocks are connected respectively to the first and second inputs of the first comparison element, the output of the first the comparison element and the output of the fourth division unit are connected respectively to the first and second inputs of the second comparison element, the output of which is connected to. the first inputs of the first and second devices for limiting the maximum tension of the strip and with the second input of the block for adjusting the position of the pressure devices, the second inputs of the first and second devices for limiting the maximum tension of the strip are connected to the outputs of the first and second tension adjusters, respectively, the outputs of the first and second devices for limiting the maximum the tension of the strip is connected to the second inputs of the first and second control units of the rear and front tension, respectively.

Кроме того, каждое из устройств ограничения максимального натяжения полосы содержит множительно-делительный блок, масштабный преобразователь, интегрозапоминающий блок, выпрямитель, компаратор, задатчик величины добавочного натяжения и реле, причем первым и вторым входами устройств являются первый и второй входы множительно-делительного блока, а выходом - выход интегрозапоминающего блока, при этом выход множительно-делительного блока соединен через масштабный преобразователь и размыкающийся контакт реле со входом интегрозапоминающего блока, выход которого через замыкающийся контакт того же реле соединен с собственным входом и со вторым входом одного из блоков регулирования натяжений, выход масштабного преобразователя через выпрямитель соединен с первым входом компаратора, второй вход которого соединен с задатчиком величины добавочного натяжения, а вход - с обмоткой.реле,In addition, each of the devices for limiting the maximum tension of the strip contains a multiplier-dividing unit, a scale converter, an integro-memory unit, a rectifier, a comparator, a setpoint for an additional tension and a relay, the first and second inputs of the devices being the first and second inputs of the multiplying-dividing unit, and the output is the output of the integro-memory unit, while the output of the multiplier-dividing unit is connected via a scale converter and the opening contact of the relay with the input of integro-memory of the first block, the output of which through the closing contact of the same relay is connected to its own input and to the second input of one of the tension control units, the output of the scale converter through a rectifier is connected to the first input of the comparator, the second input of which is connected to the adjuster of the value of the additional tension, and the input to winding relay

На чертеже представлена блок-схема предлагаемой системы.The drawing shows a block diagram of the proposed system.

Система содержит задатчики 1 и натяжения, блоки 3 и 4 регулирования заднего и переднего натяжения, разматыватель 5, моталку 6, датчик толщины полосы на входе в клеть, S блок 8 регулирования положения нажимных устройств, причем выходы задатчиков 1 и 2 натяжения соединены с первыми входами соответственно первого и второго блоков 3 и 4 регули— *0 рования заднего и переднего натяжения, блок 3 регулирования заднего натяжения соединен с разматыв.ателем 5, блок 4 регулирования переднего натяжения соединен с моталкой 6. Вы- 15 ход датчика 7 толщины полосы на входе в клеть соединен со входом измерителя 9 отклонения толщины полосы. Выход задатчика 10 расстояния между измерителем 9 отклонения тол- 20 щины полосы и клетью соединен с первым входом третьего блока 11 деления, выход третьего блока 11 деления и выход измерителя 9 отклонения толщины полосы соединены соответственно 2S с первым и вторым входами блока 12 регулируемого запаздывания, выход которого через переключатель 13 соединен с первым вхо‘дом четвертого блока 14 деления, второй вход которого эд соединен с выходом задатчика 15 номинального значения толщины входящей в в клеть полосы, выход задатчика 15 номинального значения толщины входящей в клеть полосы соединен также с пер- эд вым Входом первого блока 16 деления, второй вход которого соединен с выходом задатчика 17 номинального значения толщины выходящей из клети полосы.The system comprises adjusters 1 and tension, blocks 3 and 4 for regulating the rear and front tension, unwinder 5, coiler 6, a gauge of strip thickness at the entrance to the stand, S block 8 for adjusting the position of pressure devices, and the outputs of tension adjusters 1 and 2 are connected to the first inputs respectively, of the first and second blocks 3 and 4 of adjusting the rear and front tension * 0, the rear tension control block 3 is connected to the unwinder 5, the front tension control block 4 is connected to the winder 6. You get 15 sensor strip 7 thickness During a cage connected to the input 9 meter deflection strip thickness. The output of the distance adjuster 10 between the strip thickness deviation meter 9 and the stand is connected to the first input of the third division unit 11, the output of the third division unit 11 and the output of the strip thickness deviation meter 9 are connected, respectively, 2S to the first and second inputs of the adjustable delay unit 12, the output which through a switch 13 is connected to the first input of the fourth division unit 14, the second input of which is connected to the output of the setter 15 of the nominal value of the thickness of the strip entering the stand, the output of the setter 15 of the nominal the thickness of the strip entering the cage is also connected to the front input of the first division block 16, the second input of which is connected to the output of the setter 17 of the nominal thickness of the strip leaving the cage.

Выход первого блока 16 деления соеди- дд нен со вторым тзходом первого элемента сравнения, выход которого и выход четвертого блока 14 деления соединены соответственно с первым и вторым входами второго элемента 19 сравнения. Выходы измерителей 20 и 21 скорости входящей и выходящей из клети полосы соединены соответственно с первым и вторым входами.второго блока 22 деления, выход которого соединен с первым входом первого элемента 18 сравнения. Выход второго элемента сравнения соединен с первыми входами первого и второго устройств 23 и 24 ограничения максимального натяжения полосы, вторые входы которых соединены с выходами соответственно первого и второго задатчиков 1 и 2 натяжения. Выходы первого и второго устройств 23 и 24 ограничения максимального натяжения полосы соединены соответственно со вторыми входами первого и второго блоков 3 и 4 регулирования заднего и переднего натяжения. Каждое из устройств 23 и 24 ограничения максимального натяжения полосы состоит из множительно-делитель· ного блока 25, масштабного преобразователя 26, интегрозапоминающего блока 27, выпрямителя 28, компаратора 29, задатчика 30 величины добавочного натяжения, обмотки реле 31. Первым и вторым входами устройства 23 и 24 являются первые и вторые входы множительно-делительного блока 25, а выходом - выход интегрозапоминающего блока 27, выход множительно-делительного блока 25 через масштабный преобразователь 26 и размыкающий контакт реле 32 соединен со входом интегрозапоминающего блока 27, выход которого через размыкающий контакт 33 того же реле 31 соединен с соответственным входом блоков 3 и 4 ре гулирования заднего и переднего натяжения, выход масштабного преобразователя 26 через выпрямитель 28 соединен с первым входом компаратора 29, второй вход которого соединен с задатчиком 30 величины добавочного натяжения, а выход - с обмоткой реле 31. Первый и второй входы блока 8 регулирования положения нажимных устройств соединены соответственно с выходом задатчика 34 положения нажимных устройств и с выходом второ го элемента 19 сравнения.The output of the first division block 16 is connected to the second input of the first comparison element, the output of which and the output of the fourth division block 14 are connected respectively to the first and second inputs of the second comparison element 19. The outputs of the speed measuring instruments 20 and 21 of the strip entering and leaving the cage are connected respectively to the first and second inputs of the second division unit 22, the output of which is connected to the first input of the first comparison element 18. The output of the second comparison element is connected to the first inputs of the first and second devices 23 and 24 to limit the maximum tension of the strip, the second inputs of which are connected to the outputs of the first and second tension adjusters 1 and 2, respectively. The outputs of the first and second devices 23 and 24 to limit the maximum tension of the strip are connected respectively to the second inputs of the first and second blocks 3 and 4 of regulation of the rear and front tension. Each of the devices 23 and 24 for limiting the maximum tension of the strip consists of a multiplier-divider · block 25, a scale converter 26, an integro-memory unit 27, a rectifier 28, a comparator 29, a setter 30 of an additional tension value, a relay coil 31. The first and second inputs of the device 23 and 24 are the first and second inputs of the multiplier dividing unit 25, and the output is the output of the integro-memory unit 27, the output of the multiplier dividing unit 25 through a scale converter 26 and the disconnect contact of the relay 32 is connected to the input integro-memory unit 27, the output of which through the opening contact 33 of the same relay 31 is connected to the corresponding input of the rear and front tension control units 3 and 4, the output of the scale converter 26 through the rectifier 28 is connected to the first input of the comparator 29, the second input of which is connected to the setter 30 the magnitude of the additional tension, and the output with the coil of the relay 31. The first and second inputs of the unit 8 for controlling the position of the pressure devices are connected respectively to the output of the master 34 of the position of the pressure devices and to the output second element 19 comparison.

С помощью предлагаемого устройства решается задача получения постоянной продольной толщины полосы на выходе из прокатной клети при заданных зна- , чениях номинальной толщины на выходе из клети h подсчитывается номинальное значение величины деформации (Хнолл) и требуемая величина деформации в зависимости от отклонения толщины полосы на входе от ее номинального значения, выделяется поправка к заданной номинальной величине деформации при отклонении толщины полосы на входе в клеть от ее номинального значения и поправка текущего значения величины деформации к заданной величине деформации, сравниваются величины добавок деформаций, требуемых для получения постоянной толщины на выходе, с текущей в данной точке полосы.Using the proposed device, the problem of obtaining a constant longitudinal thickness of the strip at the exit of the rolling stand at given values of the nominal thickness at the exit of the stand h is calculated, the nominal value of the strain (Knoll) and the required value of deformation depending on the deviation of the strip thickness at the entrance from of its nominal value, a correction to a given nominal value of deformation is allocated when the thickness of the strip at the entrance to the stand deviates from its nominal value and the correction of the current value elichiny deformation to a predetermined value the deformation magnitude compared additives deformations required to obtain a constant thickness at the outlet from the current point in the strip.

Система работает следующим образом.The system operates as follows.

Задатчиком 15 на первые входы блоков 14 и 16 деления задается сигнал, пропорциональный задатчиком номинального значения выходящей из клети полосы выдается сигнал на второй вход блока 16 деления, тогда выходной сигнал этого блока будет пропорционален ~ , измеритель отклонения толщины входящей в клеть полосы выдает сигнал пропорциональный Ah_o, который подается на второй вход блока 12 регулируемого запаздывания. Время задержки t подсчитываются блоком- 11 деления, на выходе которого получается результат деления £With a pickup 15, a signal proportional to a pickup of the nominal value of the strip coming out of the cage is set to the first inputs of the division block 14 and 16, a signal is output to the second input of the division block 16, then the output signal of this block will be proportional to ~, the thickness deviation meter of the strip entering the cage gives a signal proportional to Ah _o , which is supplied to the second input of the adjustable delay unit 12. The delay time t is calculated by the division block 11, at the output of which the division result £

® -1 л I для универсальности® -1 l I for versatility

V о „ ¹ , устройства величина 1_о устанавливается с помощью задатчика 10).V о „ ¹ , the device value of 1 _{о is} set using the dial 10).

На выходе блока регулируемого запаздывания сигнал пропорционален &h_o(t). Блок 22 деления подсчитывает текущую Λ-ρθις вытяжку полосы, получая информацию от измерителя 20 скорости входящей в клеть полосы l/θ и измерителя 21 скорости выходящей из клети полосы . На элементе 18 сравнения сравниваются Д.^._еки λ.μ_ΟίΛ с блока 16 деления. Результирующая величина Δλ_τθ_κ на элементе 19 сравнения сравнивается с&Х--|-р_еБ , поступающей с блока 14 деления. Сигнал рассогласования Δ λц_О№через устройства 23 и 24 ограничения максимального натя‘жения полосы подается в блоки 3 ή 4 регулирования натяжения полосы, а также в блок 8 регулирования положения нажимных устройств. Переключателем 13 исключаются из работы элементы^ связанные с регулированием толщины полосы, и устройство переходит на регулирование вытяжки. При достижении процентной добавки (например, переднего) натяжения уровня срабатывания компаратора 29 реле 31 своими контактами отключает интегрозапоминающий блок 27 от корректирующей цепи и уровень натяжения будет ограничен' заданным задатчиком 30 величины максимального натяжения. Первноначальное натяжение задается задатчиком 1. Процент добавки корректирующего натяжения пропорцинален как величине Δλ-γ-θ* так и заданному натяжению.At the output of the adjustable delay unit, the signal is proportional to & h _o (t). The division unit 22 calculates the current Λ-ρθις strip hood, receiving information from the speed meter 20 of the strip l / θ entering the cage and the speed meter 21 of the strip leaving the cage. On element 18 of the comparison are compared D. ^. _ek and λ.μ _ΟίΛ with dividing block 16. The resulting value Δλ _τ θ _κ on the element 19 is compared with the comparison H-- & | p _EB coming from the dividing unit 14. The mismatch signal Δ λc _О№ through the devices 23 and 24 to limit the maximum tension of the strip is supplied to blocks 3 ή 4 of the strip tension regulation, as well as to the block 8 for adjusting the position of the pressure devices. The switch 13 excludes from work elements associated with the regulation of the thickness of the strip, and the device switches to the regulation of the hood. When the percentage addition (for example, front) of the tension of the response level of the comparator 29 is reached, the relay 31 disconnects the integro-memory unit 27 from the correction circuit with its contacts and the level of tension will be limited by the maximum tension set by the setpoint switch 30. The initial tension is set by the adjuster 1. The percentage of corrective tension addition is proportional to both Δλ-γ-θ * and the given tension.

Выходное напряжение множительно-делительного блока 25 меняется масштабным преобразователем 26, который одновременно играет роль фильтра. Устройство ограничения заднего натяжения полосы работает аналогично. Предлагаемая система обеспечивает постоянство толщины полосы на выходе 5- из клети независимо от колебаний толщины полосы на входе в клеть и от условий деформации; требуемый размер полосы на выходе из клети при заданных уровнях натяжения на чонцах поло10 сы; система начинает работу сразу после начала движения полосы; устройство обеспечивает ограничение изменения натяжения при регулировании толщины полосы, чем обеспечивает устой15 чивость процесса прокатки; уставки натяжений и положения нажимных устройств, выбранные оператором в предлагаемом устройстве, корректируются автоматически по уставкам толщины по20 'лосы, входящей в клеть и выходящей из клети.The output voltage of the multiplier dividing unit 25 is changed by a scale converter 26, which simultaneously plays the role of a filter. The device for limiting the rear tension of the strip works in a similar way. The proposed system ensures the constancy of the thickness of the strip at the exit of the 5th stand, regardless of fluctuations in the thickness of the strip at the entrance to the stand and the deformation conditions; the required size of the strip at the exit from the stand at specified levels of tension at the ends of the strip; the system starts working immediately after the start of the strip; the device provides a limitation of the change in tension when adjusting the strip thickness, which ensures the stability of the rolling process; the settings of the tension and the position of the pressure devices selected by the operator in the proposed device are automatically adjusted according to the settings of the thickness of 20 'of the strip entering the stand and leaving the stand.

Экономический эффект от использования предлагаемой системы заключается в облегчении работы оператора за счет корректировки натяжений в допустимых по условиям прокатки пределами и повышении качества полосы.The economic effect of using the proposed system is to facilitate the work of the operator by adjusting the tension within the limits allowed by the rolling conditions and improving the quality of the strip.

Claims

(54) SYSTEM FOR AUTOMATIC STABILIZATION OF TECHNOLOGICAL PARAMETERS UNDER COLD ROLLING ON REVERSIBLE MILLS The invention relates to the automation of rolling production, mainly to cold rolling coils. The closest to the proposed technical essence and the achieved result is a device for automatic control of the strip thickness at the cold rolling and training mill, containing thickness and speed sensors, a block for adjusting the position of the pressure devices, a gauge of the strip thickness at the entrance to the cage, a velocity meter entering crate strips, first and second dividing units, first comparing element, switch, setting unit of the nominal thickness of the output from the stand cage, setting unit of the nominal thickness of the entering strip, and the output of the setting gauge of the nominal thickness of the setting and output of the nominal thickness the input band; the lanes are connected respectively to the first and second inputs of the first dividing unit; the outputs of the speed meters of the input and output strips of the strip are connected respectively to the first and the second inputs of the second division unit P. However, when using a thickness gauge that indicates the thickness deviation from the nominal value, it is impossible to determine the required amount of deformation without taking into account the absolute value of the strip thickness at the entrance to the grid. The designation of gauges for thickness deviation from the nominal value, rather than absolute thickness gauges, is justified by the fact that the output voltage of such gauges is used only for the deviation of the thickness from the nominal value. In the case of using an absolute thickness gauge, its output voltage is used only by 5-10%, which reduces the control accuracy. The purpose of the invention is to improve the quality of the strip. This goal is achieved by the fact that the system containing the block for adjusting the position of the pressure devices of the strip thickness at the entrance to the stand, the speed meter of the strip entering the stand, the speed meter of the strip coming out of the stand, the first and second dividing units, the first reference element, switch, setpoint nominal thickness of the strip leaving the stand, unit adjuster of the nominal thickness of the strip entering the stand, where the output of the generator nominal thickness of the strip leaving the stand and the sensor output nominal The value of the thickness of the incoming strip is connected respectively to the first and second inputs of the first dividing unit, the outputs of the speed meters entering and leaving the cage are connected respectively to the first and second inputs of the second dividing unit, additionally equipped with third and fourth dividing blocks , by the second element of the comparison, by two devices for limiting the maximum tension of the strip by two blocks for adjusting the rear and front tension, two adjusters of tension, a meter of deviation of the strip, The distance between the gauge of the strip thickness deviation and the stand, the setting device of the pressure devices and the adjustable lag unit, the output of the first pretensioner is connected to the first input of the first rear tension control unit connected to the decoiler, the output of the second setpoint tensioner is connected to the first input the second front tension control unit connected to the coiler, the setting device of the position of the pressing devices connected to the first input of the control unit of the position of the pressing devices c, the output of the distance between the strip thickness deviation gauge and the stand and the output of the speed meter of the strip entering the cage are connected respectively to the first and second inputs of the third dividing unit, the output of which is connected to the first input of the adjustable delay unit, the second input of which is connected to the output of the meter of the deviation of the bandwidth of the strip, the output 74 of the adjustable delay unit through the switch is connected to the first input of the fourth dividing unit, the second input of which is connected to the output of the setpoint device nominal The thickness values of the strip entering the cage, the output of the first and the output of the second dividing unit are connected respectively to the first and second inputs of the first comparison element, the output of the first comparison element and the output of the fourth dividing unit are connected respectively to the first and second inputs of the second comparison element, the output of which is connected with the first inputs of the first and second devices limiting the maximum tension of the strip and with the second input of the unit for adjusting the position of the pressing devices, the second inputs of the first and second devices limiting the maximum tension of the strip are connected to the outputs of the first and second setting devices tensioning yhod first and second devices limit the maximum tension strip coupled to second inputs of the first and second control units front and rear tension. In addition, each of the devices for limiting the maximum band tension contains a multiplier-division block, a scale converter, an integrating memory block, a rectifier, a comparator, an incremental tension setting device and a relay, the first and second inputs of the devices being the first and second BKOfSfA multipliers. dividing block, and the output is the output of the integrating memory block, while the output of the multiplying-dividing block is connected through a scale converter and disconnecting the contact to the input with the input of the integrating memory The output unit, the output of which through the closing contact of the same relay is connected to its own input and to the second input of one of the tension control units, the output of the large-scale converter is connected via an expander to the first input of the comparator, the second input of which is connected to the setter of the additional tension, and the input is with the RAM. The drawing shows the block diagram of the proposed system. The system contains setters 1 and 2 tension, blocks 3 and 4 for adjusting the rear and front tension, uncoiler 5, coiler 6, sensor 7 for the strip thickness at the entrance to the cage, block 8 for adjusting the position of the pressure devices, and outputs of the sensors 1 and 2 the tension is connected to the first inputs of the first and second blocks 3 and 4 of the rear and front tension, respectively, the rear tension control unit 3 is connected to the unwinder 5, the front tension control unit 4 is connected to the coiler 6. Thickness sensor output 7 lanes on the inlet The cage is connected to the input of the meter 9 deviations of the strip thickness. The output of the setting device 10 between the gauge 9 deviations of the strip thickness and the cage is connected to the first input of the third dividing unit 11, the output of the third dividing unit 11 and the output of the meter 9 deviating strip thickness are connected respectively to the first and second inputs of the adjustable delay unit 12, the output of which is through a switch 13 is connected to the first input of the fourth division block 14, the second input of which is connected to the output of the setting unit 15 of the nominal thickness value of the strip entering the cage, the output of the setting unit 15 of the nominal value t The thickness of the input of the strip cage is also connected to the first gate of the first dividing unit 16, the second input of which is connected to the output of the setting unit 17 of the nominal thickness of the strips coming out of the cage. The output of the first dividing unit 16 is connected to the second clock of the first comparison element 18, the output of which the fourth dividing unit 14 is connected to the first and second inputs of the second reference element 19, respectively. The outputs of the meters 20 and 21 of the speed of the strip entering and leaving the stand are connected respectively to the first and second inputs of the second dividing unit 22, the output of which is connected to the first input of the first comparison element 18. The output of the second comparison element 19 is connected to the first inputs of the first and second devices 23 and limits the maximum tension of the strip, the second inputs of which are connected to the outputs of the first and second preset 1 and 2 of the tension respectively. The outputs ueMHioio vi and ptoroto 76 of the devices 23 and 24 of limiting the maximum tension of the strip are connected respectively to the inputs of the first and second blocks 3 and 4 of the adjustment of the rear and front tension. Each of the devices for limiting the maximum tension of the band 23 and 24 consists of a multiplier-separating unit 25, a scale converter 26, an integrating memory block 27, an extra mute 28, a comparator 29, a setting unit 30 for the additional tension, a winding of the relay 31, the first and second inputs of the device 23 and 24 are the first and second inputs of the multiplier-dividing unit 25, and the output is the output of the integrating memory unit 27, the output of the multiplying-dividing unit 25 through the scale converter 26 and the disconnecting contact of the relay 32 is connected to the input m integro-memory unit 27, the output of which through the break contact 33 of the same relay 31 is connected to the corresponding input of the blocks 3 and 4 for adjusting the rear and front tension, the output of the large-scale converter 26 through the driver 28 is connected to the first input of the comparator 29, the second input of which is connected to the setting device 30 is the incremental tension value, and the output is connected to the winding of the relay 31. The first and second inputs of the pressure control positioning unit 8 are connected respectively to the output of the setting device 34 of the pressure devices and to the output th element of the second comparator 19. The proposed device solves the problem of obtaining a constant longitudinal thickness of the strip at the exit of the rolling stand at a given value of the nominal thickness at the exit of the stand h ,. , -... calculated the nominal value of the deformation value of SCholl) and the required amount of deformation depending on the opening of the strip thickness on its nominal value, an amendment to the specified nominal strain value when the thickness of the strip at the entrance to the cage deviates from its nominal the value and correction of the current value of the strain value to a given amount of strain are compared with the magnitude of the strain additions required to obtain a constant thickness at the exit, with the current at the given point of the strip. The system works as follows. By setting unit 15, the first inputs of division blocks 14 and 16 are given a signal proportional to, unit 17 of the nominal value of the strip leaving the stand, a signal h is outputted to the second input of division unit 16, and the output signal of this unit is proportional to X tsodd, the input thickness deviation meter A strip in the cage produces a signal proportional to LDL, which is fed to the second input of the adjustable delay unit 12. The delay time t is calculated with a division block 11, at the output of which the result of the division is obtained. - TS TS (for universality VO „, the device determines the value of l with the help of the setting device 10). At the output of the adjustable lag unit, the signal is proportional to dN0 (1). The dividing unit 22 counts the current / Ljgj strip stretch, receiving information from the speed meter 20 of the strip V entering into the cage and the speed meter 21 leaving the band V. At element 18 of the comparison cage, the A-Cs are compared with the bliss v pclinjruar a.iui 1-l T6K ka 16 divisions. The resulting value of the comparison element 19 is compared with the X-fpee coming from the dividing unit 14. The error signal dHcd through the devices 23 and 24 limiting the maximum tension of the strip is fed to the blocks 3 and 4 for adjusting the tension of the strip, and the same to the block 8 for adjusting the position of the pressure devices. Switch 13 eliminates elements from operation. associated with adjusting the thickness of the strip, and the device switches to adjusting the stretch. When the percentage additive (for example, the front) tension is reached, the response level of the comparator 29, the relay 31, by its contacts, disconnects the integrating memory unit 27 from the corrective circuit and the tension level will be limited by the specified setpoint 30 of the maximum tension. The initial tension is set by the setting device 1. The percentage of the addition of the corrective tension is proportional to both the value of DD and HuiLj gp, and the specified tension. The output voltage of the multiplier-divider unit 25 is varied by a scale converter 26, which simultaneously plays the role of a filter. The device for limiting the rear tension of the strip works in a similar way. The proposed system ensures that the strip thickness at the exit from the stand irrespective of the fluctuations of the strip thickness at the entrance to the stand and the deformation conditions, the required size of the tape at the exit from the stand at given tension levels at the ends of the strip, the system starts working immediately after the strip starts moving. provides a restriction of the change in tension during the regulation of the mass of the strip, which ensures the stability of the rolling process of the tension setpoint and the position of the pressure devices selected by the operator in the proposed The device is adjusted automatically according to the settings of the thickness of the strip entering the stand and leaving the stand. The economic effect of using the proposed system is to facilitate the work of the operator by adjusting the tension in the limits acceptable under rolling conditions and improving the quality of the strip. Claim 1, System for automatic stabilization of technological parameters during cold rolling on reversing mills, comprising a block for adjusting the position of pressure devices, a gauge of strip thickness at the entrance to the stand, a velocity meter of the strip entering the stand, a velocity meter coming out of the strip stand, the first and the second dividing unit, the first element of comparison, the switch, the setpoint adjuster of the nominal value of TOLECIN going out of the Eti Polo, the setpoint adjuster of the nominal thickness of the strip entering the cage, and the driving unit of the nominal thickness of the strip leaving the stand and the output of the pilot of the nominal thickness of the entering strip are connected respectively to the first and second inputs of the first dividing unit; the outputs of the speed meters entering and leaving the stand are connected respectively to the first and second the inputs of the second dividing unit, so that, in order to improve the quality of the strip, it is additionally equipped with the third and fourth dividing units, the second element of the comparison, two devices limiting Maximum tension of the strip, two blocks for adjusting the rear and front tension, two adjusters of the tension, a gauge of the deviation of the strip thickness, a unit for the distance between the gauge of the deviation of the crowd of the strip and. the stand, the setting device of the pressure devices and the adjustable lag unit, the output of the first setpoint device connected to the first input of the first rear tension control unit connected to the uncoiler, the output of the second pressure adjuster connected to the first input of the second front tension control unit connected with winder, setting device on nalatmnyh. devices is connected to the first input of the block for adjusting the position of the pressure devices, the output of the unit for setting the distance between the gauge of the deviation of the strip thickness and adhesive

The tee and the output of the speed meter of the incoming strip into the cage are connected respectively to the first and third inputs of the third dividing unit, the output of which is connected to the first input, the adjustable delay unit, the second input of which is connected to the output - measuring the deviation of the thickness of the strip, the output of the adjustable delay unit through the switch connected to the first input of the fourth unit, the second input of which is connected to the output of the unit of the nominal thickness of the strip entering the cage, the output of the first and the output of the second unit divided into sections, respectively, with the first and second inputs of the first comparison element, the output of the first comparison element and the output of the fourth division unit are connected respectively to the first and second inputs of the second comparison element, the output of which is connected to the first inputs of the first and second maximum band tension limiting devices and with the second input of the block for adjusting the position of the pressure devices, BTOiMde, the inputs of the first and second devices, limiting the maximum tension of the strip are connected to the outputs according to But the first and second setpoint adjusters, the outputs of the first and second devices for limiting the maximum tension of the strip, are connected to the second inputs of the first and second adjustments for the rear and front tension, respectively.

2. Pop-up system 1, characterized in that each of the devices for limiting the maximum band tension includes a multiplier-dividing block, a scale converter, integrating a 4-pinch; 1st block, rectifier, comparator, unit of the additional tension and relay, and and the second inputs of the device are the first and second inputs of the multiplying-dividing block, and the OUTPUT - slot of the integrating memory block, while the output of the multi-split-dividing block is connected via a scale converter and the FF1 is connected to a relay with an input of an integrating storage unit, the output of which through the closing contact of the same relay is connected to its own input and to the second input of one of the voltage regulating units, the output of the large-scale converter is connected to the first input of the comparator through the coupler, the second input of which is connected to the setpoint of the additional tension wiring, and the output is with a winding relay.

Sources of information taken into account during the examination

one . USSR Author's Certificate No. 500841, cl. B 21 B 37/02, 1976.