SU674926A1 - Method of automatic control of extrusion process of making tubular article of plastic - Google Patents

Method of automatic control of extrusion process of making tubular article of plastic

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Publication number
SU674926A1
SU674926A1 SU762409102A SU2409102A SU674926A1 SU 674926 A1 SU674926 A1 SU 674926A1 SU 762409102 A SU762409102 A SU 762409102A SU 2409102 A SU2409102 A SU 2409102A SU 674926 A1 SU674926 A1 SU 674926A1
Authority
SU
USSR - Soviet Union
Prior art keywords
sensor
extruder
product
cooling
regulator
Prior art date
Application number
SU762409102A
Other languages
Russian (ru)
Inventor
Александр Яковлевич Шнайдер
Валентин Павлович Верещагин
Евгений Иванович Мигалин
Геннадий Георгиевич Мирошниченко
Владислав Иванович Манушин
Original Assignee
Предприятие П/Я А-1397
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 А-1397 filed Critical Предприятие П/Я А-1397
Priority to SU762409102A priority Critical patent/SU674926A1/en
Application granted granted Critical
Publication of SU674926A1 publication Critical patent/SU674926A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92009Measured parameter
    • B29C2948/92085Velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92323Location or phase of measurement
    • B29C2948/92438Conveying, transporting or storage of articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/9259Angular velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92609Dimensions
    • B29C2948/92647Thickness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885Screw or gear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895Barrel or housing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92904Die; Nozzle zone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92923Calibration, after-treatment or cooling zone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92933Conveying, transporting or storage of articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92971Fluids, e.g. for temperature control or of environment

Landscapes

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

Claims (2)

Такой способ управлени  позвол ет за вн реннего контура каскада уменьшить часто повтор ющиес  колебани  тол шййы издели , а за счет внешнего редко повтор ющиес . На чертеже дана блок -схема устройств ва, с помощью ijoToporo може.г быгь реалиаован предлагаемый способ. Устройство содержит эксгрудер 1, его двигатель 2 с исполнительным механиз- мом 3 и выход щей из экструдера 1 пласт массовой грубой 4, проход щей через калибрующую насадку 5 и охладительнзто ванну 6; .отвод щее устройство 7, которое в свою очередь, соединено с двигателем 8 и датчиком 9 мопшости да 1агатеЛ 5 датчик 10 температуры расплава, подалючен ный к регул тору 11, который св зан с исполнительным механизмом 12, вйздей- сгвующим на узел 13 электрообогрева датчик 14 Давлени  расплава, установлен ный на головке экструдера 1 датчик 15 температуры калибрующей насадки 5, под ключенный к регул тору 16, св занному с клапаном 17 подачи охлаждающей воды на калибрующую насажу 5; датчик 18 температуры охладительной вйнны 6, подключенный к регул тору 19, св занному с клапаном 20 подачи охлаждающей воды в охладительную ванну 6| датчик 21 скорости отвода трубы, подключенный к регул тору 22, который через исполнительный механизм 23 управл ет двигателем 8| датчик 24 толЩины стенок трубы, ов зан ный с входом регул крра 25; сумматор 26, на которого подключены выходы датчиков 9 и 14, а выход сумматора 26 И выход регул тора 25 подключены к вхо« дам переменной и задани  регул тора 27, который через исполнительный механизм 3 управл ет двигателем 2 экструдера 1, Способ SBl45iviafla4efeffdro упраЁлёни  Шс з эдаШЕйм йрбцесхх изготовлени  трубч |1гого издели  из пластмассь осуществл ют следующим образом. TeMftepatypy раеплава в головке экотрудера 1 измер ют датчиком 1О и ста ёилизируют регул тором 11, возцействутащим нарез исполнительный механизм 12 на узел 13 электрообогрева. Температуру калибрующей насадки 5 измер ют датчиком 15 и стабилизируют регул тором 16, Ъоздёйсйгв йщйм на кла- пан 17 подачи охлаждающей вбды на калибрующую насадку 5, Температуру охладительной ванны 6 измер ют датчиком 18 и стабилизируют регул тором 19, воздействующим на кла- пан 2О подачи охлаждающей воды в охлпдигельную ва1шу 6. Скорость отвода трубы (обороты двигетелн отвод щего устройства) измер ют йатчиком 21 и стабилизируют регул тором 22, воздействующим на исполнительный механизм 23, управл ющий скоростью двигател  8, Толщину стенок трубы измер ют датчиком 24, св занным с регул тором 25. Мощность двигател  8 имер ют датчи- ком 9, а давление расплава - датчиком 14, Выходные сигналы, пропорциональные мощ1гости, потребл емой электрода ига те лем, и давлению расплава, поступают на сумматор 26, На вькоде сумматора 26 по вл етс  суммарный сигнал, две компоненты которого пропорциональны мощности, потребл емой электродвигателем отвод щезго уст ройства, и давлению рас тлава. Суммарный сигнал подают на вход переменной регул тора 27, а на вход задани  этого ре- гул тора поступает сигнал с регул тора 25. Таким образом, формируют упраэл  ющее воздействие с коррекцией по толщи не стенок трубчатого издели  через испол- нительный механизм 3 на двигатель 2, св заннь1й с экструдером 1. Использование предлагаемого способа дл  ухфавлени  процессом получени  ру кавных плёнок принципиально не отличаетс  от описанного выще. В схеме лищь добавл етс  контур регулировани  щирины пленки, например, воздействием на подачу воздуха раздува, а стабилизаци  охлаждени  достигаетс  стабилизацией температуры и расхода охлаждающего воздуха. Повыщйние точности регулировани  тол щййй стенок по предлагаемому способу позвол ет выпускать трубы с более тошшми и равномерньтми стенками без ущерба дл  lix. щзочности. При этом достигаетс  экономи  сырь  и энергетики на единицу длины издели . Формула изобретени  1, Способ автоматического управлени  экструзионным процессом изготовлени  трубчатого издели  ИЗ пластмассы, осу- . Щёствл ёмом при экструдировании издели , пропускании его через калибрующую насадку , охладительную ванну и отводе издели  с помощью отвод щего устройства, заключающийс  в стабилизации температуры расйлава пласт ассзы в экструдере, каSuch a control method allows to reduce frequently repeated oscillations of a thick product in an external cascade contour, while at the expense of an external one it rarely repeats. In the drawing, a block diagram of devices is given; with the help of ijoToporo, the proposed method can be implemented. The device contains an extruder 1, its engine 2 with an executive mechanism 3 and a mass mass rough 4 leaving the extruder 1, passing through a calibrating nozzle 5 and cooling bath 6; The diverting device 7, which in turn is connected to the engine 8 and the sensor 9 of the vehicle, and the sensor 5, the melt temperature sensor 10, is connected to the controller 11, which is connected to the actuator 12, which is connected to the electrical heating unit 13. 14 Melt pressure, mounted on the extruder head 1, sensor 15 of the temperature of the calibrating nozzle 5, connected to the controller 16 connected to the valve 17 for supplying cooling water to the calibrating insert 5; a cooling vane temperature sensor 18 connected to a controller 19 connected to a cooling water supply valve 20 in a cooling bath 6 | sensor 21 of the pipe retraction speed, connected to the controller 22, which controls the motor 8 through the actuator 23 | sensor 24 of the thickness of the pipe walls, connected with the regulator inlet 25; an adder 26, to which the outputs of sensors 9 and 14 are connected, and the output of adder 26 And the output of regulator 25 are connected to the input of the variable and the setting of regulator 27, which controls actuator 2 of extruder 1 through actuating mechanism 3 The design of manufacturing pipe for a plastic product is carried out as follows. The TeMftepatypy of the heating section in the head of the ecotruder 1 is measured by the sensor 1О and stabilized by the regulator 11, which activates the actuator 12 on the electric heating unit 13. The temperature of the calibrating nozzle 5 is measured by the sensor 15 and stabilized by the regulator 16, the latency to the valve 17 for supplying the cooling tank to the calibrating nozzle 5. cooling water into the cooling pan 6. The removal rate of the pipe (engine speed) is measured by the sensor 21 and stabilized by the regulator 22 acting on the actuator 23 controlling the speed of the engine 8, the wall thickness of the pipes measured by sensor 24 connected to regulator 25. Engine 8 power is measured by sensor 9, and the melt pressure is measured by sensor 14, the output signals proportional to the power consumed by the electrode electrode and the melt pressure are fed to the adder 26 , On the code adder 26, a sum signal appears, the two components of which are proportional to the power consumed by the electric motor for discharging the coupling device and the pressure of the melt. The total signal is fed to the input of the variable controller 27, and the input to the task of this controller receives a signal from the controller 25. Thus, a control action is formed with a correction in the thickness of the walls of the tubular product through the actuator 3 , associated with an extruder 1. The use of the proposed process for embossing the process of obtaining ruled films does not differ in principle from that described above. In the schematic diagram, the contour of the film width is added, for example, by acting on the blowing air, and stabilization of the cooling is achieved by stabilizing the temperature and flow rate of the cooling air. Increasing the accuracy of adjusting the thick walls of the proposed method allows pipes with more nauseous and uniform walls to be produced without compromising lix. schznochnosti. At the same time, savings in raw materials and energy per unit length of the product are achieved. Claim 1, A method for automatically controlling an extrusion process for manufacturing a tubular product FROM plastic, Handled when extruded the product, passing it through a calibrating nozzle, a cooling bath, and discharging the product using a diverting device, which consists in stabilizing the temperature of the rasil plate asza in the extruder, либруюшей насадке и озсладительной ванне, изменении скорости вращени  шнека экст рудера в зависимости ог толщины стенок издели , отличающийс  тем, что, с целью повышени  точности стаби- Ливадии толщины стенок издели , скорос гь вращени  щнека экструдера корректируют в зависимости от величииы мощности, по требл емой отвод щим устройством.a freezing nozzle and a refreshing bath, changing the speed of rotation of the extruder screw depending on the wall thickness of the product, characterized in that, in order to increase the accuracy of the stabilization of the wall thickness of the product, the extruder screw rotation speed is adjusted depending on the power required by diverting device. 2. Способ по п. 1, о т л и ч а ю « щ и и с   тем, что скорость вращени 2. The method according to claim 1, of which the rotational speed is шнека экструдера дополнительно корректируют в зависимости от изменени  давлени  расплава пластмассы в экструдере.the extruder screw is additionally adjusted depending on the change in the pressure of the molten plastic in the extruder. Источники информации, прин тые во внимание при экспертизеSources of information taken into account in the examination 1. Осецкий Ю, М. и др. Исследование автоматической стабилизации толщины стенок труб из термопластов. В сб.: Оборудование дл  переработки пластмасс и резины . М., ЦИНТЙ Химнефтемаш, 1968, № 1, с. 10-20.1. Osetsky Yu, M., et al. Investigation of automatic stabilization of the wall thickness of thermoplastic pipes. In Proc .: Equipment for the processing of plastics and rubber. M., TsINTY Himneftemash, 1968, No. 1, p. 10-20. водаwater }«ч ,15} "H, 15 т а::о/5t a :: o / 5 ТЧPM
SU762409102A 1976-09-27 1976-09-27 Method of automatic control of extrusion process of making tubular article of plastic SU674926A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762409102A SU674926A1 (en) 1976-09-27 1976-09-27 Method of automatic control of extrusion process of making tubular article of plastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762409102A SU674926A1 (en) 1976-09-27 1976-09-27 Method of automatic control of extrusion process of making tubular article of plastic

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SU674926A1 true SU674926A1 (en) 1979-07-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5085567A (en) * 1989-03-01 1992-02-04 INOEX GmbH Innovationen und Ausrugstungen fur die Extrusiontechnik Extrusion system for plastics pipes
US5169649A (en) * 1989-05-31 1992-12-08 Sikora Industieelektronik Gmbh Control system for controlling the outer diameter of a strand of plastic material, in particular of a cable
RU2333099C2 (en) * 2003-11-24 2008-09-10 ЛАПКИ Манфред А. А. System for pipe molding with control over vacuum and temperature of cooling bushings

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5085567A (en) * 1989-03-01 1992-02-04 INOEX GmbH Innovationen und Ausrugstungen fur die Extrusiontechnik Extrusion system for plastics pipes
US5169649A (en) * 1989-05-31 1992-12-08 Sikora Industieelektronik Gmbh Control system for controlling the outer diameter of a strand of plastic material, in particular of a cable
US5498145A (en) * 1989-05-31 1996-03-12 Sikora Industrieelktronik Gmbh Control system for controlling the outer diameter of a strand of plastic material, in particular of a cable
RU2333099C2 (en) * 2003-11-24 2008-09-10 ЛАПКИ Манфред А. А. System for pipe molding with control over vacuum and temperature of cooling bushings

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