SU659399A2 - System for stabilizing the processing variables of extruded stock - Google Patents

System for stabilizing the processing variables of extruded stock

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Publication number
SU659399A2
SU659399A2 SU762413715A SU2413715A SU659399A2 SU 659399 A2 SU659399 A2 SU 659399A2 SU 762413715 A SU762413715 A SU 762413715A SU 2413715 A SU2413715 A SU 2413715A SU 659399 A2 SU659399 A2 SU 659399A2
Authority
SU
USSR - Soviet Union
Prior art keywords
extruder
pressure
stabilizing
regulator
output
Prior art date
Application number
SU762413715A
Other languages
Russian (ru)
Inventor
Борис Николаевич Значковский
Юрий Михайлович Осецкий
Анатолий Иванович Кубрак
Иван Зосимович Онатий
Original Assignee
Предприятие П/Я В-8406
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я В-8406 filed Critical Предприятие П/Я В-8406
Priority to SU762413715A priority Critical patent/SU659399A2/en
Application granted granted Critical
Publication of SU659399A2 publication Critical patent/SU659399A2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92019—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92085—Velocity
    • B29C2948/92095—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92209—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/9239—Screw or gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/924—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/92409—Die; Nozzle zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

Она содержит экструдер / с формующей головкой 2, зонами нагрева 3 и устройством стабилизированой запнтки, реалнзоliaiiHbiM , например, за счет удлинени  черв ка 4 и цилиндра экструдера / до 25-80 диаметров иснользовани  в экструдере скорости вращени  регулируемого тиристорпого электроиривода 5 с датчиком 6 скорости вращеии  и задатчиком 7 интенсивности занитки. При этом последние с достаточной дл  практики точностью ИСПОЛЬЗУЮТСЯ в качестве датчика и задатчика интенсивности заинтки экструдера /. Возмол :по также получеиие стабилизированной запитки за счет установки над загрузочиоГ; горловиной 8 экструдера дозатора перерабатываемого материала (иа чертеже не показан ) и работы экетрудера в режиме «голодного питани . В этом случае интенсивность запитки экструдера определ тьс  производительностью дозатора (по сигналу датчика или задатчика производительности дозатора).It contains an extruder / with a forming head 2, heating zones 3 and a stabilized screwdriver device, realizioiiHbiM, for example, by extending the screw 4 and extruder cylinder / up to 25-80 diameters used in the extruder of the rotation speed of adjustable thyristor electric actuator 5 with rotation speed sensor 6 and unit 7 intensity zanitki. At the same time, the latter, with sufficient accuracy for practice, are USED as a sensor and unit for the intensity of the extruder /. Vozmol: by also obtaining stabilized powering due to installation over the boot; throat 8 of the extruder of the dispenser of the processed material (not shown in the drawing) and the operation of the ecetruder in the "fast food" mode. In this case, the intensity of the feeding of the extruder is determined by the metering capacity (according to the signal from the sensor or the metering unit of the metering capacity).

В зонах нагрева 3 корпуса экструдера вмонтированы термоиары 9, иодключеииые к терморегул торам 10, которые своими выходами // управл ют тепловой энергией, подводимой к соответствующим зоиам нагрева 5. В формующей головке 2 могут быть устаиовлены однн или два датчика /2 и / давлени , выходы которых 14 и /5 нодключеиы на вход 16 регул тора /7 давлени . Выход 18 последнего подключен через регулируемые элементы 19 к измерительно-задающнм цеп м (на схеме не показаны) терморегул торов 10 таким образом, что выход /5 регул тора 17 давлени  может измен ть уставки температуры Г,, а, t . ..,In the heating zones 3 of the extruder body, thermo-shafts 9 are mounted, and connected to the thermostats 10, which by their outputs control the heat energy supplied to the respective heating zones 5. One or two sensors / 2 and / pressure can be installed in the forming head 2 outputs of which 14 and 5 are connected to the input 16 of the regulator / 7 pressure. The output 18 of the latter is connected via adjustable elements 19 to the measurement and control circuits (not shown) of the thermostats 10 so that the output / 5 of the pressure regulator 17 can change the temperature settings T, a, t. ..,

поддерживаемые терморегул торами 10 в зонах нагрева 3 экструдера. Выход датчика 6 скорости вращени  экструдера / подключен через стененной преобразователь 10 к измерительно задающей цени (с задатчиком 21 и одним или двум  датчиками 12 и 13 давлеии  расплава регул тора /7 давлени ).supported by thermostats 10 in the heating zones of 3 extruders. The output of the extruder rotational speed sensor 6 / is connected via a wall converter 10 to a measurement reference value (with a setting unit 21 and one or two sensors 12 and 13 of the pressure of the regulator / 7 pressure of the melt).

В частном случае, приведенном на чертел е , выход 22 степенного преобразовател  20 подключен в качестве источника, питаЛИЯ задатчика 21 давлени .In the particular case shown in the drawing, the output 22 of the power converter 20 is connected as a source, the power supply of the pressure setting device 21.

Регул тор 17 давлени  выполнен на опеоационном усилителе 23 с входными резисторами 24 -ц 25 и о.хвачен RC-цепью 26 и 27 дл  иолучени  пропорционально-интегрального закона регулировани . При необходимости возможно применение и более сложных законов регулировани . Выходной резистор 28 устанавливает допустимый диа тазон изменений выходного напр жени  регул тора , что опре.дел ет допустимый диапазон регулировани  температуры в зонах нагрева 3 относительно установленных t°, t, 3 при наладке схемы.The pressure regulator 17 is made on an operational amplifier 23 with input resistors 24-c 25 and oh. Captured by an RC circuit 26 and 27 to obtain a proportional-integral control law. If necessary, it is possible to apply more complex laws of regulation. Output resistor 28 sets the allowable range of changes in the output voltage of the regulator, which determines the allowable temperature control range in heating zones 3 relative to the set t °, t, 3 when setting up the circuit.

Производительность экструдера задаетс  оператором при помощи задатчика 7 инте .чсивности запитки. Благодар  большой длине экструдера и тиристорному приводу производительность поддерживаетс  посто нной с достаточно высокой точностью. Сигнал падени  давлени  в формующей головке 2 в этом случае с достаточной дл  практики точностью будет служнть оценкой в зкости расилава, величина которой иоддепживаетс  на заданном уровне за счет из.меиенн  температур в зонах нагрева 3 экструдера / при помощи регул тора 17 давлени . С вы-хода задатчика 7 интенсивности заиитки в степенной преобразовательThe performance of the extruder is set by the operator with the help of the setter 7 of the power supply integrity. Due to the large length of the extruder and the thyristor drive, the performance is kept constant with fairly high accuracy. In this case, the pressure drop signal in the forming head 2 will with sufficient accuracy for practice serve as an estimate of the viscosity of the rasilow, the value of which iodine decreases at a predetermined level due to the varied temperature in the heating zones 3 of the extruder / using the pressure regulator 17. From the output of the set point 7 of the intensity of the strike to the power converter

20 ноступает сигнал, пропорциональный производительности экструдера.20 a signal is received that is proportional to the performance of the extruder.

Степенной преобразователь 20 одним из известных методов, например, методом кусочно-линейной аппроксимации при помотциPower converter 20 by one of the known methods, for example, by the piecewise linear approximation method with the help of

резистивно-диодной схемы, реализует бли.зкзЮ к степенной фзшкциональную зависимость , и ири изменении входного сигнала автоматически измен ет на заданное значение давление на выходе задатчика 21 в регул торе 17. Вид зависимости определ етс , например, эксиериментально при различных цроизводительност х экструзии сырь  со средними в зкостиыми характеристиками .a resistive-diode circuit, realizes a close-to-power function dependence, and changing the input signal automatically changes the set pressure at the output of the setting device 21 in the regulator 17. The type of the dependence is determined, for example, externally at various productivities of raw materials average viscosity characteristics.

Движок задатчика 21 интенсивности запитки позвол ет измен ть настройку схемы, например ири переходе на формующую головку с другим сопротивлением (при пероходе на другой вид изделий).The feed rate setting unit 21 allows changing the circuit setting, for example, switching to a die with a different resistance (when transferring to another type of product).

Цепь обратной св зи по давлеиию снабжена контактным устройством 29, механически св заниым с движком задатчика 7 интенсивности запитки экструдера /. Механическа  св зь на чертеже не показана.The feedback feedback circuit is equipped with a contact device 29 mechanically connected with the engine of the unit 7 for the intensity of powering the extruder. The mechanical link is not shown in the drawing.

Описанна  конструктивна  особенность позвол ет (при необходимости) исключить работу схемы при тех производительност х, ири которых регулирование давлени  расплава в формующей головке 2 малоэффективно , например, в адиабатическом режиме при больщих производительност х экструзии , когда процесс слабо управл етс  по температуре стенки цилицдра и ири минимальных производительност х, когда давление отсутствует или приближаетс  к нулю. При необходимости контактное устройство 29 может быть установлено на выходе 18 регул тора 17, как показано на чертеже, а его перекидывающийс  контакт 30 можетThe described design feature allows (if necessary) to exclude the operation of the circuit at those capacities, and which control the melt pressure in the die 2 is ineffective, for example, in the adiabatic mode, with large extrusion capacities, when the process is poorly controlled by the temperature of the cylinder wall and the gas minimum performance when pressure is absent or approaching zero. If necessary, the contact device 29 can be installed at the output 18 of the regulator 17, as shown in the drawing, and its flip contact 30 can

переключать цепь управлени  температурным режимом экструзии с регулируемыми элементами 9 к выходу общего ручного задатчика 31 температуры с источником 32 питани , работающего при отключенном регул торе 17. Отклонени  температур в зона .х 3 от установленных в терморегул тора.С 10 при управлении задатчиком 31 или регул тором 17 измер етс  при помощи измерительного прибора 55.switch the extrusion temperature control circuit with adjustable elements 9 to the output of a common manual temperature setter 31 with a power source 32, operating with the regulator disconnected 17. Temperature deviations in the zone .x3 from those set in the temperature controller.C 10 when controlling the setting device 31 or regulator The torus 17 is measured using a measuring device 55.

Датчики 12 и 13 давлени  установленыPressure sensors 12 and 13 are installed.

SU762413715A 1976-10-08 1976-10-08 System for stabilizing the processing variables of extruded stock SU659399A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762413715A SU659399A2 (en) 1976-10-08 1976-10-08 System for stabilizing the processing variables of extruded stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762413715A SU659399A2 (en) 1976-10-08 1976-10-08 System for stabilizing the processing variables of extruded stock

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
SU576223 Addition

Publications (1)

Publication Number Publication Date
SU659399A2 true SU659399A2 (en) 1979-04-30

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Application Number Title Priority Date Filing Date
SU762413715A SU659399A2 (en) 1976-10-08 1976-10-08 System for stabilizing the processing variables of extruded stock

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SU (1) SU659399A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944903A (en) * 1986-03-07 1990-07-31 Bo Nilsson Method for regulating the working and the output of plastic material in extrusion moulding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944903A (en) * 1986-03-07 1990-07-31 Bo Nilsson Method for regulating the working and the output of plastic material in extrusion moulding

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