JP2003001696A - Operation control device of extrusion-molding device and operation control method - Google Patents

Operation control device of extrusion-molding device and operation control method

Info

Publication number
JP2003001696A
JP2003001696A JP2001192779A JP2001192779A JP2003001696A JP 2003001696 A JP2003001696 A JP 2003001696A JP 2001192779 A JP2001192779 A JP 2001192779A JP 2001192779 A JP2001192779 A JP 2001192779A JP 2003001696 A JP2003001696 A JP 2003001696A
Authority
JP
Japan
Prior art keywords
gear pump
raw material
motor
pressure
extruder
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP2001192779A
Other languages
Japanese (ja)
Other versions
JP3889941B2 (en
Inventor
Hiroharu Tanaka
弘治 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works Ltd
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 Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP2001192779A priority Critical patent/JP3889941B2/en
Publication of JP2003001696A publication Critical patent/JP2003001696A/en
Application granted granted Critical
Publication of JP3889941B2 publication Critical patent/JP3889941B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
    • B29C48/37—Gear pumps
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/387—Plasticisers, homogenisers or feeders comprising two or more stages using a screw extruder and a gear pump
    • 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
    • B29C2948/92323—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
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—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
    • B29C2948/92504—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
    • B29C2948/92819—Location or phase of control
    • B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
    • 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
    • B29C2948/92866—Inlet shaft or slot, e.g. passive hopper; Injector, e.g. injector nozzle on barrel
    • 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
    • B29C2948/92952—Drive section, e.g. gearbox, motor or drive fluids

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To provide an operation control device, of a resin extrusion-molding device, which is capable of satisfactorily controlling the operation when two filters are installed and also an operation control method. SOLUTION: During molding, the rotary speed of a second gear pump (25) is set at a set speed level and the operating speeds of a raw material feeder (21), an extruder (22) and a first gear pump (23) are controlled in a feedback mode so that the pressure before the second gear pump (25) is set at a set pressure level. In addition, during starting the operation and changing a discharge volume, the operating speeds of the first and the second gear pump (23 and 25) are feedback controlled respectively so that the pressure before the first and the second gear pump (23 and 25) are set at a set pressure level. When the operating speed of the second gear pump (25) reaches a set speed level, the operating speed of the second gear pump (25) is set at a set speed level and the raw material feeder (21), the extruder (22) and the first gear pump (23) are feedback controlled.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、押出機成形装置と
して特に樹脂押出成形装置の運転制御装置及びその方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extruder molding apparatus, and more particularly to an operation control apparatus and method for a resin extrusion molding apparatus.

【０００２】[0002]

【従来の技術】従来より押出成形装置として、例えば特
公平６−０５５４１５号公報に示すようなものが知られ
ている。図２は上記公報に示される押出成形装置を示す
ブロック図である。図に示す樹脂押出成形装置１００
は、重量式フィーダ又は容量式フィーダ等の原料供給機
１から供給された原料を二軸押出機等の押出機２で混練
溶融して押出し、この押出された原料をギアポンプ３で
吐出し、ろ過装置４を介して、シート形成装置５でシー
ト材を成形するようにしている。2. Description of the Related Art Conventionally, as an extrusion molding apparatus, for example, one disclosed in Japanese Patent Publication No. 6-055415 is known. FIG. 2 is a block diagram showing the extrusion molding apparatus disclosed in the above publication. Resin extrusion molding apparatus 100 shown in the figure
Is kneaded and melted by a extruder 2 such as a twin-screw extruder to extrude the raw material supplied from the raw material feeder 1 such as a weight type feeder or a capacity type feeder, and the extruded raw material is discharged by a gear pump 3 and filtered. A sheet material is formed by the sheet forming apparatus 5 via the apparatus 4.

【０００３】原料供給機１、押出機２及びギアポンプ３
はそれぞれ第１モータ６、第２モータ７及び第３モータ
８により駆動され、各モータ６，７，８の回転速度に応
じて速度、言い換えれば原料の供給量、押出量及び吐出
量が調整される。上記各モータ６，７，８は、圧力検出
器９、回転速度検出器１０、圧力コントローラ１１及び
制御操作盤１２等からなる運転制御装置により駆動制御
されるようになっている。圧力検出器９は押出機２とギ
アポンプ３間の圧力すなわちギアポンプ前圧力を検出す
るもので、検出値を圧力コントローラ１１に出力するよ
うになっている。また、回転速度検出器１０は、第３モ
ータ８の回転速度を検出するもので、検出値を圧力コン
トローラ１１に出力するようになっている。Raw material feeder 1, extruder 2 and gear pump 3
Are respectively driven by the first motor 6, the second motor 7, and the third motor 8, and the speeds, in other words, the raw material supply amount, extrusion amount, and discharge amount are adjusted in accordance with the rotation speeds of the respective motors 6, 7, 8. It The motors 6, 7 and 8 are driven and controlled by an operation control device including a pressure detector 9, a rotation speed detector 10, a pressure controller 11 and a control operation panel 12. The pressure detector 9 detects the pressure between the extruder 2 and the gear pump 3, that is, the pressure before the gear pump, and outputs the detected value to the pressure controller 11. The rotation speed detector 10 detects the rotation speed of the third motor 8 and outputs the detected value to the pressure controller 11.

【０００４】圧力コントローラ１１は、ギアポンプ前圧
力が設定圧力となるように第１モータ６及び第２モータ
７又は第３モータ８をフィードバック制御するもので、
予め制御操作盤１２によりギアポンプ前圧力の設定圧
力、第３モータ８の設定回転速度、ＰＩＤ定数等の制御
定数等が設定されており、圧力検出器９により検出され
たギアポンプ前圧力と設定圧力とを比較し、この比較結
果に基づいて第１モータ６及び第２モータ７又は第３モ
ータ８の各回転速度を演算し、この演算結果に基づいて
第１モータ６及び第２モータ７又は第３モータ８を選択
的にフィードバック制御するようになっている。The pressure controller 11 feedback-controls the first motor 6 and the second motor 7 or the third motor 8 so that the pressure before the gear pump becomes a set pressure.
The setting pressure of the gear pump front pressure, the setting rotation speed of the third motor 8, the control constants such as the PID constant, etc. are set in advance by the control operation panel 12, and the gear pump front pressure and the setting pressure detected by the pressure detector 9 are set. And the respective rotation speeds of the first motor 6 and the second motor 7 or the third motor 8 are calculated based on this comparison result, and the first motor 6 and the second motor 7 or the third motor 8 are calculated based on the calculation result. The motor 8 is selectively feedback-controlled.

【０００５】このフィードバック制御の選択において、
第１モータ６及び第２モータ７のフィードバック制御は
成形時に行われ、第３モータ８のフィードバック制御は
立上げ時及び吐出量変更時に選択するようになってい
る。また、第３モータ８をフィードバック制御している
場合には、回転速度検出器１０により検出された第３モ
ータ８の回転速度が設定回転速度に達したときに第３モ
ータ８の回転速度に設定すると共に、第１モータ６及び
第２モータ７のフィードバック制御に自動的に切換える
ようになっている。In selecting the feedback control,
The feedback control of the first motor 6 and the second motor 7 is performed at the time of molding, and the feedback control of the third motor 8 is selected at the time of start-up and when the discharge amount is changed. Further, when the third motor 8 is feedback-controlled, it is set to the rotation speed of the third motor 8 when the rotation speed of the third motor 8 detected by the rotation speed detector 10 reaches the set rotation speed. At the same time, the feedback control of the first motor 6 and the second motor 7 is automatically switched.

【０００６】以上の構成において、立ち上げ時には、第
３モータ８を圧力コントローラ１１によりフィードバッ
ク制御すると共に、第１モータ６及び第２モータ７の回
転速度を上昇させる。第１モータ６及び第２モータ７の
回転速度が上昇するに伴い、原料供給機１及び押出機２
の速度、すなわち原料の供給量及び押出量が増大し、ギ
アポンプ前圧力が上昇する。そして、ギアポンプ前圧力
が設定圧力に達すると、第３モータ８がフィードバック
制御されギアポンプ４の回転速度が上昇する。以後、第
１モータ６及び第２モータ７の回転速度を上昇し、原料
供給量及び押出量を増大する。これに伴いギアポンプ前
圧力が設定圧力となるように第３モータ８がフィードバ
ック制御される。これにより第３モータ８の回転速度が
上昇し、設定回転速度に達すると、圧力コントローラ１
１によるフィードバック制御が第１モータ６及び第２モ
ータ７に切換えられ、成形運転に移行する。In the above structure, at the time of startup, the third motor 8 is feedback-controlled by the pressure controller 11 and the rotation speeds of the first motor 6 and the second motor 7 are increased. As the rotation speeds of the first motor 6 and the second motor 7 increase, the raw material feeder 1 and the extruder 2
The feed rate and the extrusion rate of the raw material increase, and the pressure before the gear pump increases. Then, when the pressure before the gear pump reaches the set pressure, the third motor 8 is feedback-controlled and the rotation speed of the gear pump 4 increases. After that, the rotation speeds of the first motor 6 and the second motor 7 are increased, and the raw material supply amount and the extrusion amount are increased. Along with this, the third motor 8 is feedback-controlled so that the pressure before the gear pump becomes the set pressure. As a result, the rotation speed of the third motor 8 increases, and when it reaches the set rotation speed, the pressure controller 1
The feedback control by 1 is switched to the first motor 6 and the second motor 7, and the molding operation is started.

【０００７】成形時には、第１モータ６及び第２モータ
７が圧力コントローラ１１によりフィードバック制御さ
れ、第３モータ８の回転速度が設定回転速度に設定され
る。すなわち、ギアポンプ３が設定速度で作動され、原
料供給機１及び押出機２がギアポンプ前圧力となるよう
にフィードバック制御される。At the time of molding, the first motor 6 and the second motor 7 are feedback-controlled by the pressure controller 11, and the rotation speed of the third motor 8 is set to the set rotation speed. That is, the gear pump 3 is operated at the set speed, and the raw material supply device 1 and the extruder 2 are feedback-controlled so as to have the pressure before the gear pump.

【０００８】吐出量を変更する場合には、圧力コントロ
ーラ１１によるフィードバック制御を第１モータ６及び
第２モータ７から第３モータ８の設定回転速度を変更す
る吐出量に対応した回転速度に設定する。そして、第１
モータ６及び第２モータ７の回転速度を徐々に操作し、
変更する吐出量に対応した原料供給量及び押出量となる
ようにする。第１モータ６及び第２モータ７の回転速度
を操作することにより、ギアポンプ前側の圧力が変動
し、この変動に応じて第３モータ８がフィードバック制
御される。そして、第３モータ８の回転速度が徐々に変
更され、設定回転速度に達すると、圧力コントローラ１
１によるフィードバック制御が第１モータ６及び第２モ
ータ７に切り換えられ、吐出量変更後の成形運転に移行
される。When changing the discharge amount, feedback control by the pressure controller 11 is set to a rotation speed corresponding to the discharge amount for changing the set rotation speed of the first motor 6 and the second motor 7 to the third motor 8. . And the first
Gradually operate the rotation speeds of the motor 6 and the second motor 7,
The raw material supply amount and the extrusion amount corresponding to the changed discharge amount are set. By operating the rotation speeds of the first motor 6 and the second motor 7, the pressure on the front side of the gear pump fluctuates, and the third motor 8 is feedback-controlled in accordance with this fluctuation. When the rotation speed of the third motor 8 is gradually changed and reaches the set rotation speed, the pressure controller 1
The feedback control by 1 is switched to the first motor 6 and the second motor 7, and the molding operation after changing the discharge amount is started.

【０００９】こうして、樹脂押出成形装置１００は原料
を安定状態で定量吐出するように運転され、所定厚のシ
ート材を良好に成形することができるとともに、立上げ
時及び吐出量変更時においては、第３モータ８、言い換
えればギアポンプ３がフィードバック制御されるため、
ギアポンプ前圧力が負圧となったり、過剰圧になること
がなく安定しており、しかもギアポンプ４がギアポンプ
前圧力の変動に応じて迅速且つ円滑に設定回転速度に制
御される。In this way, the resin extrusion molding apparatus 100 is operated so as to discharge the raw material in a constant amount in a stable state, it is possible to satisfactorily form a sheet material having a predetermined thickness, and at the time of starting up and changing the discharge amount, Since the third motor 8, in other words, the gear pump 3 is feedback-controlled,
The pressure before the gear pump does not become negative pressure or excessive pressure and is stable, and furthermore, the gear pump 4 is quickly and smoothly controlled to the set rotational speed according to the fluctuation of the pressure before the gear pump.

【００１０】[0010]

【発明が解決しようとする課題】従来の樹脂押出成形装
置１００は、以上のように構成され、ギアポンプ３が１
台の構成で良い場合には、原料を安定状態で定量吐出す
るように運転することができ、所定厚のシート材を良好
に成形することができる。しかしながら、成形品に高級
品質等が要求される場合においては、ろ過装置４を少な
くとも２つ設ける必要がある場合があるが、このような
場合、従来の樹脂押出成形装置１００の構成において
は、その構成上、良好な運転制御を行うことができない
という問題点がある。The conventional resin extrusion molding apparatus 100 is configured as described above, and the gear pump 3 has one unit.
When the structure of the table is sufficient, it is possible to operate so as to discharge the raw material in a constant amount in a stable state, and it is possible to favorably form a sheet material having a predetermined thickness. However, when a molded product is required to have high quality, it may be necessary to provide at least two filtering devices 4. In such a case, in the configuration of the conventional resin extrusion molding device 100, Due to the configuration, there is a problem that good operation control cannot be performed.

【００１１】本発明は上述した課題を解決するために成
されたものであり、２台のろ過装置を設置した場合に良
好な運転制御を行うことができる樹脂押出成形装置の運
転制御装置及び運転制御方法を提供することを目的とし
ている。The present invention has been made to solve the above-mentioned problems, and an operation control device and an operation of a resin extrusion molding apparatus capable of performing good operation control when two filtration devices are installed. The purpose is to provide a control method.

【００１２】[0012]

【課題を解決するための手段】上述した課題を解決する
ため、本発明は、原料供給機（２１）と、該原料供給機
（２１）からの原料を混練溶融して押出す押出機（２
２）と、該押出機（２２）で押出された原料を定量吐出
する第１，第２ギアポンプ（２３，２５）を備えてなる
樹脂押出成形装置の運転制御装置において、成形時には
第２ギアポンプ（２５）の回転速度を設定速度に設定
し、第２ギアポンプ前の圧力が設定圧力になるように原
料供給機（２１）、押出機（２２）及び第１ギアポンプ
（２３）の速度をフィードバック制御する第１フィード
バック制御手段（３２，３３，３４，３５，３６，３
７）と、立ち上げ時及び吐出量変更時には、第１，第２
ギアポンプ前圧力が設定圧力となるようそれぞれのギア
ポンプ（２３，２５）の速度をフィードバック制御する
と共に、第２ギアポンプ（２５）の速度が設定速度に達
したときに、第２ギアポンプ（２５）の速度を設定速度
に設定し、原料供給機（２１）、押出機（２２）及び第
１ギアポンプ（２３）をフィードバック制御する第２フ
ィードバック制御手段（３２，３３，３４，３５，３
６，３７）とを備えてなることを特徴とするものであ
る。In order to solve the above-mentioned problems, the present invention provides a raw material feeder (21) and an extruder (2) for kneading, melting and extruding the raw material from the raw material feeder (21).
2) and the first and second gear pumps (23, 25) for quantitatively discharging the raw material extruded by the extruder (22), in the operation control device of the resin extrusion molding apparatus, the second gear pump ( The rotation speed of 25) is set to a set speed, and the speeds of the raw material feeder (21), the extruder (22) and the first gear pump (23) are feedback-controlled so that the pressure before the second gear pump becomes the set pressure. First feedback control means (32, 33, 34, 35, 36, 3
7), and when starting up and changing the discharge amount, the first and second
The speed of each gear pump (23, 25) is feedback-controlled so that the pressure before the gear pump reaches the set pressure, and when the speed of the second gear pump (25) reaches the set speed, the speed of the second gear pump (25). Is set to a set speed, and the second feedback control means (32, 33, 34, 35, 3) for feedback controlling the raw material supply machine (21), the extruder (22) and the first gear pump (23).
6 and 37) are provided.

【００１３】また、本発明は、原料供給機（２１）と、
該原料供給機（２１）からの原料を混練溶融して押出す
押出機（２２）と、該押出機（２２）で押出された原料
を定量吐出する第１，第２ギアポンプ（２３，２５）と
を備えてなる樹脂押出成形装置の運転制御方法におい
て、成形時には第２ギアポンプ（２５）の回転速度を設
定速度に設定し、第２ギアポンプ前の圧力が設定圧力に
なるように原料供給機（２１）、押出機（２２）及び第
１ギアポンプ（２３）の速度をフィードバック制御し、
立ち上げ時及び吐出量変更時には、第１，第２ギアポン
プ前圧力が設定圧力となるようそれぞれのギアポンプ
（２３，２５）の速度をフィードバック制御すると共
に、第２ギアポンプ（２５）の速度が設定速度に達した
ときに、第２ギアポンプ（２５）の速度を設定速度に設
定し、原料供給機（２１）、押出機（２２）及び第１ギ
アポンプ（２３）をフィードバック制御することを特徴
とするものである。The present invention also comprises a raw material feeder (21),
An extruder (22) for kneading and melting and extruding the raw material from the raw material supply machine (21), and first and second gear pumps (23, 25) for quantitatively discharging the raw material extruded by the extruder (22). In the method of controlling the operation of the resin extrusion molding apparatus, the raw material feeder (the feed speed of the second gear pump (25) is set to a set speed so that the pressure before the second gear pump becomes the set pressure during molding. 21), the speed of the extruder (22) and the first gear pump (23) is feedback-controlled,
At startup and when changing the discharge rate, the speeds of the respective gear pumps (23, 25) are feedback-controlled so that the pressures before the first and second gear pumps become the set pressure, and the speed of the second gear pump (25) is set to the set speed. The speed of the second gear pump (25) is set to a set speed and the raw material feeder (21), the extruder (22) and the first gear pump (23) are feedback-controlled. Is.

【００１４】[0014]

【発明の実施の形態】以下、本発明の実施の形態を図面
を用いて説明する。図１は本発明の実施の形態に係る樹
脂押出成形装置を示すブロック図である。この樹脂押出
成形装置は、原料供給機２１から供給された原料を二軸
押出機等の押出機２２で混練溶融して押出し、この押出
された原料を第１ギアポンプ２３及び第２ギアポンプ２
５で吐出し、シート成形装置２７でシート材を成形する
ようになっている。また、第１ギアポンプ２３の後段に
第１ろ過装置２４、第２ギアポンプ２５の後段に第２ろ
過装置２６を設けている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a resin extrusion molding apparatus according to an embodiment of the present invention. In this resin extrusion molding apparatus, a raw material supplied from a raw material supply device 21 is kneaded and melted by an extruder 22 such as a twin-screw extruder and extruded, and the extruded raw material is fed to a first gear pump 23 and a second gear pump 2
5, and the sheet material is formed by the sheet forming device 27. Further, a first filtering device 24 is provided at the subsequent stage of the first gear pump 23, and a second filtering device 26 is provided at the subsequent stage of the second gear pump 25.

【００１５】原料供給機２１、押出機２２、第１ギアポ
ンプ２３及び第２ギアポンプ２５は、それぞれ第１モー
タ２８、第２モータ２９、第３モータ３０及び第４モー
タ３１により駆動されている。各第１乃至第４モータ２
８，２９，３０，３１は、第１圧力検出器３２、第１回
転速度検出器３３、第１圧力コントローラ３４、第２圧
力検出器３５、第２回転速度検出器３６、第２圧力コン
トローラ３７及び制御操作盤３８からなる運転制御装置
により駆動制御されている。The raw material feeder 21, the extruder 22, the first gear pump 23 and the second gear pump 25 are driven by a first motor 28, a second motor 29, a third motor 30 and a fourth motor 31, respectively. Each of the first to fourth motors 2
Reference numerals 8, 29, 30, and 31 denote a first pressure detector 32, a first rotation speed detector 33, a first pressure controller 34, a second pressure detector 35, a second rotation speed detector 36, and a second pressure controller 37. Drive control is performed by the operation control device including the control operation panel 38.

【００１６】第１圧力検出器３２は、押出機２２と第１
ギアポンプ２３間の圧力すなわち第１ギアポンプ前圧力
を検出するもので、検出値を第１圧力コントローラ３４
に出力するようになっている。また、第１回転速度検出
器３３は、第３モータ３０の回転速度を検出するもの
で、検出値を第１圧力コントローラ３４に出力するよう
になっている。The first pressure detector 32 includes the extruder 22 and the first pressure detector 32.
The pressure between the gear pumps 23, that is, the pressure before the first gear pump is detected, and the detected value is detected by the first pressure controller 34.
It is designed to output to. The first rotation speed detector 33 detects the rotation speed of the third motor 30, and outputs the detected value to the first pressure controller 34.

【００１７】第２圧力検出器３５は、第１ろ過装置２４
と第２ギアポンプ２５間の圧力、すなわち第２ギアポン
プ前圧力を検出するもので、検出値を第２圧力コントロ
ーラ３７に出力するようになっている。また、第２回転
速度検出器３６は、第４モータ３１の回転速度を検出す
るもので、検出値を第２圧力コントローラ３７に出力す
るようになっている。The second pressure detector 35 is the first filtration device 24.
The pressure between the second gear pump 25 and the second gear pump 25, that is, the pressure before the second gear pump is detected, and the detected value is output to the second pressure controller 37. The second rotation speed detector 36 detects the rotation speed of the fourth motor 31, and outputs the detection value to the second pressure controller 37.

【００１８】第２圧力コントローラ３７は、第２ギアポ
ンプ前圧力が設定圧力となるように第３モータ３０また
は第４モータ３１をフィードバック制御するもので、予
め制御操作盤３８により第２ギアポンプ前圧力の設定圧
力、第４モータ３１の各回転速度を演算し、この演算結
果に基づいて第３モータ３０または第４モータ３１を選
択的にフィードバック制御するようになっている。The second pressure controller 37 feedback-controls the third motor 30 or the fourth motor 31 so that the second gear pump front pressure becomes a set pressure, and the control operation panel 38 preliminarily controls the second gear pump front pressure. The set pressure and each rotation speed of the fourth motor 31 are calculated, and the third motor 30 or the fourth motor 31 is selectively feedback-controlled based on the calculation result.

【００１９】第１圧力コントローラ３４は、第１ギアポ
ンプ前圧力が設定圧力となるように第１モータ２８及び
第２モータ２９又は第３モータ３０をフィードバック制
御するもので、予め制御操作盤３８により第１ギアポン
プ前圧力の設定圧力、ＰＩＤ定数等の制御定数等が設定
されており、第１圧力検出器３２により検出された第１
ギアポンプ前圧力と設定圧力とを比較し、この比較結果
に基づいて第１モータ２８及び第２モータ２９又は第３
モータ３０の各回転速度を演算し、この演算結果に基づ
いて第１モータ２８及び第２モータ２９または第３モー
タを選択的にフィードバック制御するようになってい
る。The first pressure controller 34 feedback-controls the first motor 28 and the second motor 29 or the third motor 30 so that the pressure before the first gear pump becomes the set pressure. The set pressure of the pressure before one gear pump, the control constants such as the PID constant, and the like are set, and the first pressure detected by the first pressure detector 32.
The pre-gear pump pressure is compared with the set pressure, and the first motor 28 and the second motor 29 or the third motor are based on the comparison result.
Each rotation speed of the motor 30 is calculated, and the first motor 28 and the second motor 29 or the third motor is selectively feedback-controlled based on the calculation result.

【００２０】以下、実施の形態の動作について説明す
る。上記のフィードバック制御の選択は制御操作盤３８
により行われる。成形時は第１圧力コントローラ３４は
第１モータ２８及び第２モータ２９をフィードバック制
御し、第２圧力コントローラ３７は第３モータ３０をフ
ィードバック制御するにようなっている。また、立上げ
時及び吐出量変更時においては、第１圧力コントローラ
３４は、第３モータ３０をフィードバック制御し、第２
圧力コントローラ３７は、第４モータ３１をフィードバ
ック制御するようになっている。The operation of the embodiment will be described below. The above feedback control is selected by the control operation panel 38.
Done by. During molding, the first pressure controller 34 feedback-controls the first motor 28 and the second motor 29, and the second pressure controller 37 feedback-controls the third motor 30. In addition, at the time of start-up and when the discharge amount is changed, the first pressure controller 34 feedback-controls the third motor 30,
The pressure controller 37 is adapted to feedback control the fourth motor 31.

【００２１】また、第２圧力コントローラ３７で第４モ
ータ３１をフィードバック制御している場合には、第２
回転速度検出器３６により、検出された第４モータ３１
の回転速度が設定回転速度に達したときに、第４モータ
３１をその設定回転速度に設定維持し、第３モータ３０
をフィードバック制御すると共に、第１圧力コントロー
ラ３４で第１モータ２８及び第２モータ２９のフィード
バック制御を行うように自動的に切換える。なお、上記
のフィードバック制御への切換えは手動により行うよう
にしても良い。If the second pressure controller 37 is feedback controlling the fourth motor 31, the second pressure controller 37
The fourth motor 31 detected by the rotation speed detector 36.
When the rotation speed of the third motor 30 reaches the set rotation speed, the fourth motor 31 is set and maintained at the set rotation speed, and the third motor 30
Is feedback-controlled, and the first pressure controller 34 is automatically switched to perform feedback control of the first motor 28 and the second motor 29. The switching to the above feedback control may be performed manually.

【００２２】このようにして、本発明の実施の形態で
は、ろ過装置の後段にギアポンプを１台追加設置するこ
とにより、ろ過装置を２台設置することを可能とし、成
形時には、原料供給機、押出機及び前段ギアポンプを後
段ギアポンプ前圧力が設定圧力となるようにフィードバ
ック制御し、立上げ時及び吐出量変更時には、各ギアポ
ンプを各ギアポンプ前圧力が設定圧力になるようにフィ
ードバック制御することにより、安定作動時間の短縮及
び原料損失の低減を可能とすることができる。As described above, in the embodiment of the present invention, by installing one gear pump after the filtering device, it is possible to install two filtering devices. The extruder and the front gear pump are feedback-controlled so that the rear gear pump front pressure becomes the set pressure, and at the time of start-up and when the discharge amount is changed, the feedback control is performed so that each gear pump front pressure becomes the set pressure. It is possible to shorten the stable operation time and reduce the material loss.

【００２３】[0023]

【発明の効果】上述したように、ろ過装置を２台設置す
ることを可能とし、成形時には、原料供給機、押出機及
び前段ギアポンプを後段ギアポンプ前圧力が設定圧力と
なるようにフィードバック制御し、立上げ時及び吐出量
変更時には、各ギアポンプを各ギアポンプ前圧力が設定
圧力になるようにフィードバック制御することにより、
安定作動時間の短縮及び原料損失の低減を可能とするこ
とができる。As described above, it is possible to install two filtration devices, and at the time of molding, the raw material feeder, the extruder and the front gear pump are feedback-controlled so that the rear gear pump front pressure becomes a set pressure, At startup and when changing the discharge rate, feedback control is performed on each gear pump so that the pressure before each gear pump becomes the set pressure.
It is possible to shorten the stable operation time and reduce the material loss.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の実施の形態における樹脂押出成形装置
の運転制御装置を示すブロック図である。FIG. 1 is a block diagram showing an operation control device of a resin extrusion molding apparatus according to an embodiment of the present invention.

【図２】従来の樹脂押出成形装置の運転制御装置を示す
ブロック図である。FIG. 2 is a block diagram showing an operation control device of a conventional resin extrusion molding apparatus.

【符号の説明】[Explanation of symbols]

２１ 原料供給機、２２ 押出機、２３ 第１ギアポン
プ、２４ 第１ろ過装置、２５ 第２ギアポンプ、２６
第２ろ過装置、２７ シート成形装置、２８第１モー
タ、２９ 第２モータ、３０ 第３モータ、３１ 第４
モータ、３２第１圧力検出器、３３ 第１回転速度検出
器、３４ 第１圧力コントローラ、３５ 第２圧力検出
器、３６ 第２回転速度検出器、３７ 第２圧力コント
ローラ、３８ 制御操作盤。21 Material Feeder, 22 Extruder, 23 First Gear Pump, 24 First Filtration Device, 25 Second Gear Pump, 26
2nd filtration apparatus, 27 sheet forming apparatus, 28 1st motor, 29 2nd motor, 30 3rd motor, 31 4th
Motor, 32 1st pressure detector, 33 1st rotation speed detector, 34 1st pressure controller, 35 2nd pressure detector, 36 2nd rotation speed detector, 37 2nd pressure controller, 38 Control operation panel.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 原料供給機（２１）と、該原料供給機
（２１）からの原料を混練溶融して押出す押出機（２
２）と、該押出機（２２）で押出された原料を定量吐出
する第１，第２ギアポンプ（２３，２５）とを備えてな
る樹脂押出成形装置の運転制御装置において、 成形時には第２ギアポンプ（２５）の回転速度を設定速
度に設定し、第２ギアポンプ前の圧力が設定圧力になる
ように原料供給機（２１）、押出機（２２）及び第１ギ
アポンプ（２３）の速度をフィードバック制御する第１
フィードバック制御手段（３２，３３，３４，３５，３
６，３７）と、 立ち上げ時及び吐出量変更時には、第１，第２ギアポン
プ前圧力が設定圧力となるようそれぞれのギアポンプ
（２３，２５）の速度をフィードバック制御すると共
に、第２ギアポンプ（２５）の速度が設定速度に達した
ときに、第２ギアポンプ（２５）の速度を該設定速度に
維持し、原料供給機（２１）、押出機（２２）及び第１
ギアポンプ（２３）をフィードバック制御する第２フィ
ードバック制御手段（３２，３３，３４，３５，３６，
３７）とを備えてなることを特徴とする押出機成形装置
の運転制御装置。1. A raw material feeder (21) and an extruder (2) for kneading, melting and extruding the raw material from the raw material feeder (21).
2) and the first and second gear pumps (23, 25) for quantitatively discharging the raw material extruded by the extruder (22), the operation control device of the resin extrusion molding apparatus, wherein the second gear pump during molding. The rotation speed of (25) is set to the set speed, and the speeds of the raw material feeder (21), the extruder (22) and the first gear pump (23) are feedback-controlled so that the pressure before the second gear pump becomes the set pressure. First to do
Feedback control means (32, 33, 34, 35, 3
6 and 37), the speed of each gear pump (23, 25) is feedback controlled so that the pre-pressurization of the first and second gear pumps becomes the set pressure at the time of start-up and when the discharge amount is changed, and the second gear pump (25 ) Reaches the set speed, the speed of the second gear pump (25) is maintained at the set speed, and the raw material feeder (21), the extruder (22) and the first
Second feedback control means (32, 33, 34, 35, 36,) for feedback controlling the gear pump (23)
37) The operation control device of the extruder molding device, comprising: 【請求項２】 原料供給機（２１）と、該原料供給機
（２１）からの原料を混練溶融して押出す押出機（２
２）と、該押出機（２２）で押出された原料を定量吐出
する第１，第２ギアポンプ（２３，２５）とを備えてな
る樹脂押出成形装置の運転制御方法において、 成形時には第２ギアポンプ（２５）の回転速度を設定速
度に設定し、第２ギアポンプ前の圧力が設定圧力になる
ように原料供給機（２１）、押出機（２２）及び第１ギ
アポンプ（２３）の速度をフィードバック制御し、 立ち上げ時及び吐出量変更時には、第１，第２ギアポン
プ前圧力が設定圧力となるようそれぞれのギアポンプ
（２３，２５）の速度をフィードバック制御すると共
に、第２ギアポンプ（２５）の速度が設定速度に達した
ときに、第２ギアポンプ（２５）の速度を該設定速度に
維持し、原料供給機（２１）、押出機（２２）及び第１
ギアポンプ（２３）をフィードバック制御することを特
徴とする押出機成形装置の運転制御方法。2. A raw material feeder (21) and an extruder (2) for kneading, melting and extruding the raw material from the raw material feeder (21).
2) and the first and second gear pumps (23, 25) for quantitatively discharging the raw material extruded by the extruder (22), the operation control method of the resin extrusion molding apparatus, wherein the second gear pump is used during molding. The rotation speed of (25) is set to the set speed, and the speeds of the raw material feeder (21), the extruder (22) and the first gear pump (23) are feedback-controlled so that the pressure before the second gear pump becomes the set pressure. However, at startup and when changing the discharge rate, the speeds of the respective gear pumps (23, 25) are feedback-controlled so that the pressures before the first and second gear pumps become the set pressure, and the speed of the second gear pump (25) is adjusted. When the set speed is reached, the speed of the second gear pump (25) is maintained at the set speed, and the raw material feeder (21), the extruder (22) and the first
A method for controlling the operation of an extruder molding apparatus, which comprises feedback controlling a gear pump (23).
JP2001192779A 2001-06-26 2001-06-26 Operation control apparatus and operation control method for extrusion molding apparatus Expired - Fee Related JP3889941B2 (en)

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JP2001192779A JP3889941B2 (en) 2001-06-26 2001-06-26 Operation control apparatus and operation control method for extrusion molding apparatus

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JP3889941B2 JP3889941B2 (en) 2007-03-07

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JP2003062891A (en) * 2001-08-30 2003-03-05 Hitachi Zosen Corp Extrusion-molding facilities
JP2008023847A (en) * 2006-07-21 2008-02-07 Toyo Seikan Kaisha Ltd Extrusion molding method and extrusion molding apparatus
EP2636504A1 (en) * 2012-03-05 2013-09-11 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Kneading/extruding equipment and operation control method thereof
JP2017035789A (en) * 2015-08-07 2017-02-16 東レ株式会社 Manufacturing method of sheet and manufacturing device of sheet
JP2018196939A (en) * 2017-05-23 2018-12-13 三菱ケミカル株式会社 Extrusion molding apparatus and sheet manufacturing method
WO2020137530A1 (en) * 2018-12-26 2020-07-02 東レ株式会社 Sheet manufacturing method, polyolefin microporous film manufacturing method, kneading measurement device, and discharge device
JP7488734B2 (en) 2020-09-15 2024-05-22 住友化学株式会社 Acrylic resin film manufacturing method and acrylic resin film manufacturing device
JP7510863B2 (en) 2020-12-11 2024-07-04 株式会社日本製鋼所 Extrusion molding device and control method thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003062891A (en) * 2001-08-30 2003-03-05 Hitachi Zosen Corp Extrusion-molding facilities
JP2008023847A (en) * 2006-07-21 2008-02-07 Toyo Seikan Kaisha Ltd Extrusion molding method and extrusion molding apparatus
EP2636504A1 (en) * 2012-03-05 2013-09-11 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Kneading/extruding equipment and operation control method thereof
JP2013180560A (en) * 2012-03-05 2013-09-12 Kobe Steel Ltd Kneading and extruding machine and operation control method thereof
US9333674B2 (en) 2012-03-05 2016-05-10 Kobe Steel, Ltd. Kneading/extruding equipment with feedforward control of latter stage pump
JP2017035789A (en) * 2015-08-07 2017-02-16 東レ株式会社 Manufacturing method of sheet and manufacturing device of sheet
JP2018196939A (en) * 2017-05-23 2018-12-13 三菱ケミカル株式会社 Extrusion molding apparatus and sheet manufacturing method
WO2020137530A1 (en) * 2018-12-26 2020-07-02 東レ株式会社 Sheet manufacturing method, polyolefin microporous film manufacturing method, kneading measurement device, and discharge device
JP7488734B2 (en) 2020-09-15 2024-05-22 住友化学株式会社 Acrylic resin film manufacturing method and acrylic resin film manufacturing device
JP7510863B2 (en) 2020-12-11 2024-07-04 株式会社日本製鋼所 Extrusion molding device and control method thereof

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