JPH02270529A - Controlling device of motor in extrusion line - Google Patents

Controlling device of motor in extrusion line

Info

Publication number
JPH02270529A
JPH02270529A JP1090803A JP9080389A JPH02270529A JP H02270529 A JPH02270529 A JP H02270529A JP 1090803 A JP1090803 A JP 1090803A JP 9080389 A JP9080389 A JP 9080389A JP H02270529 A JPH02270529 A JP H02270529A
Authority
JP
Japan
Prior art keywords
speed
motor
rotation speed
motors
speed command
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
JP1090803A
Other languages
Japanese (ja)
Other versions
JPH0624753B2 (en
Inventor
Ippei Morinaka
森中　逸平
Sadao Ito
貞夫 伊藤
Toshihisa Miyaki
宮木　敏久
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.)
RKC Instrument Inc
Original Assignee
Rika Kogyo Inc
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 Rika Kogyo Inc filed Critical Rika Kogyo Inc
Priority to JP1090803A priority Critical patent/JPH0624753B2/en
Publication of JPH02270529A publication Critical patent/JPH02270529A/en
Publication of JPH0624753B2 publication Critical patent/JPH0624753B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B29C2948/92504—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
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • 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
    • B29C2948/92933—Conveying, transporting or storage of articles
    • 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)
  • Control Of Multiple Motors (AREA)

Abstract

PURPOSE:To make it possible not to develop speed difference of motor when speed command mode is changed over by a method wherein the same speed command signals are outputted to a plurality of motors from a speed commanding means before and after the changing-over between individual control action mode and ratio control action mode. CONSTITUTION:When mode is changed over to individual control action mode, rotational frequency signals sent from a rotational frequency setting means 101 is outputted from a control means 106 to respective motors 100. When mode is changed over to ratio control action mode, the control means 106 calculates the rotational frequency ratio among the respective motors 100 on the basis of measured rotational frequency signals sent from the rotational frequency setting means 101 or speed command signals sent from a speed commanding means 107. And the control means 106 proportionally calculates the rotational frequencies of the master motor and of the slave motors through the speed setting done by a line speed setting means 105 and outputs them to a speed commanding means 107 in order to output speed command signals to the master motor and slave motors 100. Before and after the mode changing-over action, the speed commanding means 107 outputs the same speed command signals or the control means 106 outputs rotational frequency signals from a memory to the speed commanding means 107, which outputs the same speed command signals.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は押出成形ラインのモータ制御装置に係り、特に
押出成形機を含み長尺物や積層物のプラスチック成形に
用いる押出成形ラインにおける複数のモータの回転数制
御に好適するモータ制御装置の改良に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a motor control device for an extrusion molding line, and particularly to a motor control device for an extrusion molding line used for plastic molding of long objects and laminates, including an extrusion molding machine. The present invention relates to an improvement of a motor control device suitable for controlling the rotational speed of a motor.

〔従来の技術〕[Conventional technology]

プラスチックパイプ等の長尺物やプラスチックシート等
の積層物を押出し成形する押出成形ラインは１例えば押
出成形機に引取機を連結させて構成されており、押出機
で溶解プラスチック原材料をスクリューで押出し成形す
るとともに、引取機でその押出し成形品を引き取るよう
な構成となっている。An extrusion molding line for extruding and molding long objects such as plastic pipes and laminates such as plastic sheets is composed of, for example, an extrusion molding machine connected to a take-off machine. At the same time, the extrusion molded product is taken up by a taking-off machine.

このような押出成形ラインでは、一定の成形形状を維持
するために、押出機のスクリューを回転させるモータと
引取機において成形品の引き取りに用いるモータの回転
数を所定の関係に設定する必要がある。In such extrusion molding lines, in order to maintain a constant molded shape, it is necessary to set the rotational speed of the motor that rotates the screw in the extruder and the motor that is used to take off the molded product in the take-off machine to have a predetermined relationship. .

さらに、押出成形ラインにおける成形速度を変更したり
押出成形ライン構成を変更する場合には。Furthermore, when changing the molding speed on the extrusion line or changing the extrusion line configuration.

やはり押出機のモータと引取機のモータの回転数を所定
の速度指令の下で変化させる必要がある。It is also necessary to change the rotational speed of the extruder motor and the take-up machine motor under a predetermined speed command.

このようなモータの速度指令を行うには９例えば押出機
と引取機のモータに以下のような関係を持たせた構成の
モータの速度制御装置が知られている。In order to issue such motor speed commands, a motor speed control device is known in which, for example, the motors of an extruder and a take-up machine have the following relationship.

（１）押出機のモータと引取機のモータの回転数を各々
単独で制御する構成。(1) A configuration in which the rotation speeds of the extruder motor and the take-up machine motor are individually controlled.

（２）押出機のモータを主モータとし引取機のモータを
従モータとし、主モータの回転制御に従って所定の比率
で従モータの回転数を比率制御する構成。(2) A configuration in which the extruder motor is the main motor, the take-up machine motor is the slave motor, and the rotation speed of the slave motor is ratio-controlled at a predetermined ratio according to the rotation control of the main motor.

（３）押出機のモータを従モータとし引取機のモータを
主モータとし、主モータの回転制御に従って所定の比率
で従モータの回転数を比率制御する構成。(3) A configuration in which the extruder motor is a slave motor, the take-up machine motor is a main motor, and the rotation speed of the slave motor is ratio-controlled at a predetermined ratio according to the rotation control of the main motor.

（４）押出機および引取機のモータを各々従モータとし
、速度設定器によってそれら従モータの回転数を所定の
比率で比率ｖＩＩｌｌする構成。(4) A configuration in which the motors of the extruder and the take-up machine are each slave motors, and the rotation speeds of the slave motors are set at a predetermined ratio vIIll by a speed setting device.

そして、　（１）の構成は各々のモータが独立している
から、互いに速度制御が影響しない特徴があり、　（２
）および（３）は主モータによって従モータの回転数を
自動的に比率制御可能であるが。In the configuration (1), each motor is independent, so speed control does not affect each other, and (2)
) and (3), it is possible to automatically control the rotation speed of the slave motor by the main motor.

従モータのみの制御では主モータを制御できない特徴が
ある。There is a characteristic that the main motor cannot be controlled by controlling only the slave motor.

更に（４）の構成では押出機および引取機のモータが各
々従モータとして速度設定器によって一定の回転比率で
制御される特徴がある。Furthermore, the configuration (4) is characterized in that the motors of the extruder and the take-up machine are each controlled at a constant rotation ratio by a speed setting device as a slave motor.

これら押出機および引取機のモータの速度指令制御は、
押出成形ラインの構成、°成形品の種類。The speed command control of the motors of these extruders and take-up machines is
Extrusion line configuration, ° types of molded products.

成形速度等に応じて単独動作と比率動作モードを適当に
選択される。The single operation mode and the ratio operation mode are appropriately selected depending on the molding speed, etc.

（発明が解決しようとする課題〕 しかしながら、従来のモータ制御装置においては、各モ
ータの接続回路構成を変更して単独動作と比率動作モー
ドの切換えに対処してしたので。(Problems to be Solved by the Invention) However, in conventional motor control devices, switching between the independent operation mode and the ratio operation mode was handled by changing the connection circuit configuration of each motor.

単独動作と比率動作モードの間でモードを切換えると、
切換え前後で各モータに速度差が生じ易い難点があり、
安定した押出成形運転を図る観点がら、モード切換え前
後の各モータの回転数が変化しないような工夫が要望さ
れている。Switching the mode between single and ratio operation modes,
The problem is that speed differences tend to occur between each motor before and after switching.
From the viewpoint of achieving stable extrusion molding operation, there is a need for a device that does not change the rotational speed of each motor before and after mode switching.

特に、モード切換えを頻繁に行う場合には、単独動作モ
ードから比率動作モードに切換えたとき各モータの比率
動作への再現性が悪くなる等の難点があった。In particular, when mode switching is frequently performed, there are problems such as poor reproducibility of the ratio operation of each motor when switching from the individual operation mode to the ratio operation mode.

本発明はこのような状況の下になされたもので。The present invention was made under these circumstances.

押出成形ラインのモータ速度指令モードを単独動作モー
ドと比率動作モード間で切換えてもモータの速度差が生
じないモータ制御装置の提供を目的とする。An object of the present invention is to provide a motor control device in which a motor speed difference does not occur even when a motor speed command mode of an extrusion molding line is switched between an individual operation mode and a ratio operation mode.

〔課題を解決するための手段〕[Means to solve the problem]

このような課題を解決するために本発明は、第１図のク
レーム対応図で示すように、押出成形機を含む押出成形
ラインに配置された複数のモータ１００、回転数設定手
段１０１．回転数測定手段１０２、主従関係設定手段１
０３．モード切換手段１０４．ライン速度設定手段１０
５．制御手段１０６および速度指令手段１０７を具備し
て構成されている。In order to solve such problems, the present invention, as shown in the diagram corresponding to the claims in FIG. 1, includes a plurality of motors 100, rotation speed setting means 101. Rotation speed measuring means 102, master-slave relationship setting means 1
03. Mode switching means 104. Line speed setting means 10
5. It is configured to include a control means 106 and a speed command means 107.

回転数設定手段１０１は複数のモータ１００の回転数を
設定するもので１回転数測定手段１０２は各モータ１０
０の回転数を測定するもので、主従関係設定手段１０３
は各モータ１００間の互いの主従関係を設定するもので
ある。The rotation speed setting means 101 is for setting the rotation speed of a plurality of motors 100, and the rotation speed measuring means 102 is for setting the rotation speed of each motor 100.
0 rotation speed, the master-slave relationship setting means 103
is used to set a mutual master-slave relationship between the motors 100.

モード切換手段１０４は少なくとも各モータ１００の単
独動作と比率動作を切換えるもので、ライン速度設定手
段１０５は押出成形ラインの動作速度を設定するもので
ある。The mode switching means 104 is for switching at least between individual operation and ratio operation of each motor 100, and the line speed setting means 105 is for setting the operating speed of the extrusion molding line.

制御手段１０６は、単独動作時には回転数設定手段１０
１からの回転数信号を出力し、比率動作時に回転数測定
手段１０２からの各モータの測定回転数信号又は速度指
令手段１０７から各モータへの速度指令信号に基づいて
各モータ間の回転数比率を演算し、かつライン速度設定
手段１０５からの速度設定の下に上記回転数比率に基づ
く主および従モータの比率回転数信号を演算して速度指
令手段１０７へ出力するものである。The control means 106 controls the rotation speed setting means 10 during independent operation.
1, and determines the rotation speed ratio between each motor based on the measured rotation speed signal of each motor from the rotation speed measuring means 102 or the speed command signal from the speed command means 107 to each motor during ratio operation. is calculated, and based on the speed setting from the line speed setting means 105, a ratio rotation speed signal of the main and slave motors based on the rotation speed ratio is calculated and outputted to the speed command means 107.

速度指令手段１０７はその制御手段１０６からの回転数
信号から主および従モータ１００の速度指令信号を該当
する前記主および従モータ１００へ出力するとともに、
モード切換手段１０４の切換え動作の前後に直近の同じ
速度指令信号を出力するものである。The speed command means 107 outputs speed command signals for the main and slave motors 100 to the corresponding main and slave motors 100 based on the rotational speed signal from the control means 106, and
The same most recent speed command signal is output before and after the switching operation of the mode switching means 104.

そして、速度指令手段１０７が直近の同じ速度指令信号
を出力する構成としては９例えば、速度指令手段１０７
自体が、切換え動作の前後にわたって直近の速度指令信
号を出力し続けるランチ機能を有する構成する例や、各
モータについての直近の回転数を記憶する記憶手段１０
８を制御手段１０６に接続し、制御手段１０６が切換え
動作によってその記憶手段１０８からの直近の回転数信
号を出力する構成とする構成が可能である。For example, the configuration in which the speed command means 107 outputs the same latest speed command signal is 9, for example, the speed command means 107
An example in which the device itself has a launch function that continues to output the most recent speed command signal before and after the switching operation, and a storage device 10 that stores the most recent number of revolutions for each motor.
8 is connected to the control means 106, and the control means 106 outputs the most recent rotational speed signal from the storage means 108 by a switching operation.

〔作　用〕[For production]

このような手段を備えた本発明では、モード切換手段１
０４によって単独動作モードに切換えられると９回転数
設定手段１０１からの回転数信号がＩＩＪＩＩ手段１０
６から速度指令手Ｖ！Ｉｔ１０７を介して各モータ１０
０へ出力される。In the present invention equipped with such means, the mode switching means 1
When switched to the independent operation mode by 04, the rotation speed signal from the rotation speed setting means 101 is changed to the IIJII means 10.
Speed command hand V from 6! Each motor 10 via It107
Output to 0.

比率動作モードに切換えられると、制御手段ｌＯ６が２
回転数設定手段１０１がらの測定回転数信号又は速度指
令手段１０７からの速度指令信号に基づいて各モータ１
００間の回転比率を演算し。When switched to the ratio mode of operation, the control means lO6
Based on the measured rotation speed signal from the rotation speed setting means 101 or the speed command signal from the speed command means 107, each motor 1
Calculate the rotation ratio between 00 and 00.

ライン速度設定手段１０５からの速度設定によって主お
よび従モータの回転数を比率演算して速度指令手段１０
７に出力し、速度指令手段１０７がそれら主および従モ
ータ１００に速度指令信号を出力する。The speed command means 10 calculates the ratio of the rotational speed of the main and slave motors based on the speed setting from the line speed setting means 105.
7, and the speed command means 107 outputs a speed command signal to the main and slave motors 100.

そして、モード切換手段１０４によるモード切換え動作
の前後では、速度指令手段１０７自体が直近の同じ速度
指令信号を出方するが、又は制御手段１０６が記憶手段
１０Ｂから直近の回転数信号を速度指令手段１０７へ出
方し、速度指令手段１０７が直近の同じ速度指令信号を
出力する。Then, before and after the mode switching operation by the mode switching means 104, the speed command means 107 itself outputs the same latest speed command signal, or the control means 106 outputs the latest rotational speed signal from the storage means 10B to the speed command means. 107, and the speed command means 107 outputs the same latest speed command signal.

〔実施例〕〔Example〕

以下本発明の実施例を図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.

第２図は本発明に係るモータ制御装置を実施する押出成
形ラインの一例を示す概略図である。FIG. 2 is a schematic diagram showing an example of an extrusion molding line implementing the motor control device according to the present invention.

図において、押出機１は、成形機台３内に主スクリユ−
５およびこれを回転駆動する押出用モータ７や、この押
出用モータ７の回転数を検出するタコジェネレータ等の
回転数検出用センサ９等。In the figure, the extruder 1 has a main screw in the molding machine table 3.
5, an extrusion motor 7 that rotates the extrusion motor 7, and a rotation speed detection sensor 9 such as a tacho generator that detects the rotation speed of the extrusion motor 7.

その駆動の構成を有する従来公知の構成となっている。This drive configuration has a conventionally known configuration.

成形機台３にはプラスチック原材料を供給するホンパー
１１−および副スクリユ−１３その他を有する原料フィ
ーダ装置１５が装備されており、原料フィーダ装置１５
には副スクリユ−１３を回転駆動するフィーダ用モータ
１７とこのフィーダ用モータ１７の回転数を検出するセ
ンサ１９が配置されている。The molding machine table 3 is equipped with a raw material feeder device 15 having a hopper 11 for supplying plastic raw materials, an auxiliary screw 13, and others.
A feeder motor 17 for rotationally driving the sub-screw 13 and a sensor 19 for detecting the number of revolutions of the feeder motor 17 are arranged.

なお、符号２１および２３は成形機台３に配置された温
度センサや圧力センサである。Note that reference numerals 21 and 23 are temperature sensors and pressure sensors arranged on the molding machine stand 3.

この押出機ｌは、原料フィーダ装置１５がらフィーダ用
モータ１７によって主スクリユ−５部分に供給されたプ
ラスチック原材料を主スクリュー５の回転駆動によって
この先端近傍に配置したダイス（図示せず）から成形品
２５として押出するものである。This extruder 1 uses a feeder motor 17 from a raw material feeder 15 to feed a plastic raw material into a main screw 5 section, which is rotated to produce a molded product from a die (not shown) disposed near the tip of the main screw 5. It is extruded as 25.

押出された成形品２５は２例えば２組の引取機２７．２
９によって引き取られるようになっており、各引取機２
７．２９において成形品２５を引き取るローラ２７ａ、
２９ａが各々引取用モータ３１．３３によって回転駆動
されており、その引取用モータ３１，３３の回転数がセ
ンサ９．１９と同様なセンサ３５，３７によって検出さ
れるようになっている。The extruded molded product 25 is transferred to two, for example, two sets of take-off machines 27.2.
9, each collection machine 2
At 7.29, the roller 27a that takes over the molded product 25;
29a are rotationally driven by take-up motors 31 and 33, respectively, and the rotation speeds of the take-up motors 31 and 33 are detected by sensors 35 and 37 similar to the sensors 9 and 19.

それら押出用モータ７、フィーダ用モータ１７゜引取用
モータ３１，３３およびセンサ９，１９゜３５．３７は
本発明のモータ制御装置Ａにケーブル等で接続されてお
り、モータ制御装置Ａはこれらモータ７．１？、３１．
３３の回転数を制御するものである。The extrusion motor 7, the feeder motor 17, the take-up motors 31, 33, and the sensors 9, 19, 35, 37 are connected to the motor control device A of the present invention by a cable or the like, and the motor control device A controls these motors. 7.1? , 31.
This controls the rotation speed of 33.

第３図は本発明に係る押出成形ラインのモータ制御装置
の構成を示すブロック図である。FIG. 3 is a block diagram showing the configuration of a motor control device for an extrusion molding line according to the present invention.

図において、制御手段としての制御回路３９は。In the figure, a control circuit 39 is a control means.

入力指示された回転数信号を出力するとともに比率モー
ド時に比率回転数を演演算力するＣＰＵ４１と、このＣ
ＰＵ４１の動作プログラムを格納したＲＯＭ４３と、Ｃ
ＰＵ４１の演算過程のデータを一時的に記憶するＲＡＭ
４５およびデータ入出力用のインタフェース（Ｉｌｏ）
４７等を有して形成され、所謂マイクロコンピュータの
主要部となっている。A CPU 41 which outputs an inputted rotation speed signal and outputs a calculation of the ratio rotation speed in the ratio mode;
ROM43 storing the operating program of PU41 and C
RAM that temporarily stores data in the calculation process of PU41
45 and data input/output interface (Ilo)
47, etc., and is the main part of a so-called microcomputer.

制御回路３９に接続された主従関係設定装置４９、モー
ド切換装置５１９回転数設定装置５３およびライン速度
設定装置５５は、第２図に示すように、装置本体の操作
面に形成されたキーボード５７で形成されており、詳細
は後述する。The master-slave relationship setting device 49, mode switching device 519, rotation speed setting device 53, and line speed setting device 55 connected to the control circuit 39 are controlled by a keyboard 57 formed on the operation surface of the main body of the device, as shown in FIG. The details will be described later.

制御回路３９に接続された主従関係記憶回路５９、回転
数記憶回路６１およびリミット回転数記憶回路６３は、
ＲＡＭからなる記憶手段としての外部記憶回路６５であ
って記憶領域を分割して使用される。The master-slave relationship storage circuit 59, rotation speed storage circuit 61, and limit rotation speed storage circuit 63 connected to the control circuit 39 are as follows:
The external storage circuit 65 is a storage means consisting of a RAM, and is used by dividing the storage area.

制御回路３９に接続された表示装置ＣＲＴは入出力デー
タを表示するブラウン管デイスプレィ装置であり、これ
以外に例えばプラズマ・デイスプレィ装置が用いられる
。The display device CRT connected to the control circuit 39 is a cathode ray tube display device for displaying input/output data, and in addition to this, for example, a plasma display device may be used.

回転数測定装置６７は、第２図の回転数検出用センサ９
，１９，３５．３７を含みモータ７．１７．３１．３３
の回転数に応じたアナログ電気信号を出力するもので、
アナログ信号をデジタル回転数信号に変換して測定回転
数信号を出力するＡ／Ｄ変換回路６９を介して制御回路
３９に接続されており、これらによって回転数測定手段
が形成されているｉ Ｄ／Ａ変換回路７１は制御回路３９からのデジタル回転
数信号をアナログ信号に変換するものであって速度指令
信号出力回路７３に接続されて速度指令手段を形成して
おり、速度指令信号出力回路７３は第２図の各モータ７
．１７，３１．３３に速度指令信号を出力して回転制御
するものである。The rotation speed measuring device 67 is the rotation speed detection sensor 9 shown in FIG.
, 19, 35.37 including motor 7.17.31.33
It outputs an analog electrical signal according to the rotation speed of the
It is connected to the control circuit 39 via an A/D conversion circuit 69 that converts an analog signal into a digital rotation speed signal and outputs a measured rotation speed signal, and these components form a rotation speed measuring means. The A conversion circuit 71 converts the digital rotational speed signal from the control circuit 39 into an analog signal, and is connected to the speed command signal output circuit 73 to form speed command means. Each motor 7 in Fig. 2
．． 17, 31, and 33 to output speed command signals to control rotation.

Ｄ／Ａ変換回路７１もしくは速度指令信号出力回路７３
は制御回路３９からの回転数信号に基づき２次の回転数
信号が制御回路３９から出力されない限り、同じ速度指
令信号を出力し続けるようなランチ機能もしくはメモリ
ー機能を有している。D/A conversion circuit 71 or speed command signal output circuit 73
has a launch function or memory function that continues to output the same speed command signal based on the rotation speed signal from the control circuit 39 unless a secondary rotation speed signal is output from the control circuit 39.

モード切換装置５１は、モータ制御装置Ａが各モータ７
．１？、３１．３３を単独動作もしくは比率動作モード
で制御するか否かを設定するモード設定手段であり、単
独動作および比率動作モード下において各々手動モード
と自動モードの選択が可能に構成されているが、少なく
と、も単独動作と比率動作モードの切換え設定が可能と
なるように構成されていればよい。The mode switching device 51 is configured so that the motor control device A controls each motor 7.
．． 1? , 31, 33 is a mode setting means for setting whether to control in the single operation mode or the ratio operation mode, and is configured to be able to select between the manual mode and the automatic mode under the single operation mode and the ratio operation mode, respectively. At least, it is sufficient that the configuration is such that it is possible to switch between the single operation mode and the ratio operation mode.

単独動作モードにおいて２手動モードは制御回路３９の
管理下で２回転数設定装置５３から入力された回転数で
そのまま各モータ７．１７．．３１゜３３を個別制御す
るものであり、自動モードは制御回路３９の管理下で回
転数設定装置５３から予め入力した回転数で各モータ７
．１７．３１．３３を個別に自動制御するものである。In the independent operation mode, in the 2-manual mode, each motor 7, 17, . ．． 31 and 33, and in the automatic mode, each motor 7 is controlled at the rotation speed input in advance from the rotation speed setting device 53 under the control of the control circuit 39.
．． 17.31.33 are automatically controlled individually.

比率動作モードは、制御回路３９の管理下で。The ratio mode of operation is under the control of control circuit 39.

主モータついてはＤ／Ａ変換回路７１から入力された測
定回転数信号から、従モータについてはこの従モータが
従属する主モータの回転数から比率演算して各モータ７
．１７，３１．３３の回転数を制御するものである。Ｄ
／Ａ変換回路７１からの直近の速度指令信号に係る信号
から比率演算する場合もある。For the main motor, the ratio is calculated from the measured rotation speed signal input from the D/A conversion circuit 71, and for the slave motor, the ratio is calculated from the rotation speed of the main motor to which this slave motor is dependent.
．． It controls the rotation speed of 17, 31, and 33. D
The ratio may be calculated from the signal related to the most recent speed command signal from the /A conversion circuit 71.

なお、各モータ７．１？、３１．３３についての主従関
係設定については後述する。In addition, each motor 7.1? , 31.33 will be described later.

回転数設定装置５３は、各モータ７．１？、３１．３３
の回転数を例えば手動入力する回転数設定手段であり、
制御回路３９の管理下で２回転数記憶回路６１へ記憶さ
せるようになっている。The rotation speed setting device 53 is connected to each motor 7.1? , 31.33
A rotation speed setting means for manually inputting the rotation speed of, for example,
Under the control of the control circuit 39, it is stored in the two-rotation speed storage circuit 61.

また９回転数設定装置５３からは、制御回路３９の管理
下で、各モータ７．１７．３１．３３について最大許容
回転数（リミット回転数）の入力も可能になっており、
各リミット回転数はリミット回転数記憶回路６３に記憶
されるようになっている。Also, from the rotation speed setting device 53, it is possible to input the maximum allowable rotation speed (limit rotation speed) for each motor 7, 17, 31, 33 under the control of the control circuit 39.
Each rotation speed limit is stored in a rotation speed limit storage circuit 63.

主従関係設定装置４９は、第２図中の各モータ７．１７
，３１．３３のいずれが主モータになるか、いずれが主
モータに対する従モータになるかの主従関係を設定変更
する主従関係設定手段であり２制御回路３９の管理下で
その主従関係は主従関係記憶回路５９に記憶されるよう
になっている。The master-slave relationship setting device 49 is connected to each motor 7.17 in FIG.
, 31, 33 is a master-slave relationship setting means for changing the setting of the master-slave relationship as to which one becomes the main motor and which one becomes the slave motor with respect to the main motor. The data is stored in the memory circuit 59.

主従関係については、複数のモータを主モータとして各
々主モータに１　ｆｌ１以上の従モータを従属させる構
成や、主モータに従属した従モータに別の従モータを従
属させる構成等任意である。Regarding the master-slave relationship, any configuration is possible, such as a configuration in which a plurality of motors are the main motors and each of the main motors is subordinated to 1 fl1 or more slave motors, or a configuration in which a slave motor subordinate to the main motor is subordinated to another slave motor.

第４図は回転数設定装置５３および主従関係設定装置４
９で設定された各モータ７．１７，３１゜３３のリミッ
ト回転数および主従関係を表示装置ＣＲＴで示したもの
であり、主従関係を示す項目中の数字はその従モータが
従属する上位のモータの番号である。FIG. 4 shows the rotation speed setting device 53 and the master-slave relationship setting device 4.
The limit rotational speed and master-slave relationship of each motor 7, 17, 31, 33 set in 9 are shown on the display CRT, and the number in the item indicating the master-slave relationship indicates the higher motor to which the slave motor is dependent. This is the number.

ライン速度設定装置５５は、第２図の押出成形ライン全
体もしくは一部の成形動作速度を設定させるためのライ
ン速度指令手段である。The line speed setting device 55 is a line speed command means for setting the molding operation speed of the entire or part of the extrusion molding line shown in FIG.

制御回路３９は、モード切換装置５１が単独動作におけ
る手動モードを選択している状況の下で。The control circuit 39 is in a situation where the mode switching device 51 selects the manual mode in independent operation.

回転数設定装置５３から各モータ７．１？、３１゜３３
の回転数が入力されると、そのまま各回転数信号をＤ／
Ａ変換回路７１に出力するとともに回転数記憶回路６１
に回転数を記憶するようになっている。From the rotation speed setting device 53 to each motor 7.1? , 31°33
When the rotation speed is input, each rotation speed signal is directly input to D/
Output to the A conversion circuit 71 and the rotation speed storage circuit 61
The number of revolutions is memorized.

モード切換装置５工が単独動作における自動モードを選
択している時には、予め回転数設定装置５３から入力さ
れた回転数９例えば回転数記憶回路６１に記憶された回
転数を読出して各モータ７゜１７．３１．３３の回転数
信号をＤ／Ａ変換回路７１へ所定の手順で出力するとと
もに１回転数記憶回路６１に記憶するようになっている
。When the mode switching device 5 selects the automatic mode for independent operation, the rotation speed inputted in advance from the rotation speed setting device 53, for example, the rotation speed stored in the rotation speed storage circuit 61, is read out and the rotation speed of each motor 7° is read out. The rotational speed signals of 17.31.33 are output to the D/A conversion circuit 71 according to a predetermined procedure and are also stored in the 1 rotational speed storage circuit 61.

制御回路３９は、モード切換装置５１が比率モードを選
択している時に、主従関係記憶回路５９に記憶された主
従関係データを参照し、Ａ／Ｄ変換回路６９からの測定
回転数信号又はＤ／Ａ変換回路７１からの直近の速度指
令信号に係る信号（実質的に速度指令信号に等価なデジ
タル信号）から主および従モータの回転数比率を演算し
、ライン速度設定装置５５からの主モータに対する速度
設定に基づき、各主モータの回転数を演算するとともに
その回転数比率に従って主モータの回転数から従モータ
の回転数を演算してＤ／Ａ変換回路７１に出力し５回転
数記憶回路６１にその回転数を記憶する機能を有してい
る。When the mode switching device 51 selects the ratio mode, the control circuit 39 refers to the master-slave relationship data stored in the master-slave relationship storage circuit 59, and outputs the measured rotational speed signal from the A/D conversion circuit 69 or the D/D converter circuit 69. The rotation speed ratio of the main and slave motors is calculated from the signal related to the most recent speed command signal from the A conversion circuit 71 (a digital signal substantially equivalent to the speed command signal), and the rotation speed ratio of the main motor and the slave motor is Based on the speed setting, the rotation speed of each main motor is calculated, and the rotation speed of the slave motor is calculated from the rotation speed of the main motor according to the rotation speed ratio, and outputted to the D/A conversion circuit 71. It has a function to memorize the rotation speed.

制御回路３９は、Ａ／Ｄ変換回路６９から入力される各
モータ７．１７．３１．３３の各測定回転数信号又はＤ
／Ａ変換回路７１へ出力する各回転数信号についてリミ
ット回転数記憶回路６３からのリミット回転数と比較し
、１個でもリミット回転数を越えるものがあるか否かを
監視し、その越えるモータが存在する場合には、越える
時点における他の主および従モータの比率回転数を演算
してＤ／Ａ変換回路７１へ出力し、リミット回転数を越
えないモータの回転数を抑える機能を有している。The control circuit 39 receives each measured rotational speed signal or D
Each rotation speed signal output to the /A conversion circuit 71 is compared with the rotation speed limit from the limit rotation speed storage circuit 63, and it is monitored whether even one signal exceeds the rotation speed limit. If it exists, it has a function of calculating the ratio rotation speed of other main and slave motors at the time when the limit rotation speed is exceeded and outputting it to the D/A conversion circuit 71, and suppressing the rotation speed of the motor so that it does not exceed the limit rotation speed. There is.

そのため、第５図に示すように、あるモータ７゜１７．
３１．３３がリミット回転数（２）に達すると、他のモ
ータ７．１７，３１．３３はリミット回転数（１）に至
らなくとも所定の比率を維持したまま回転数が制御され
る。Therefore, as shown in FIG. 5, a certain motor 7°17.
31.33 reaches the rotation speed limit (2), the rotation speeds of the other motors 7.17, 31.33 are controlled while maintaining a predetermined ratio even if they do not reach the rotation speed limit (1).

このような構成のモータ制御装面は、制御回路３９から
一度出力された回転数信号と異なる回転数信号がその制
御回路３９からＤ／Ａ変換回路７１へ出力されない限り
、モード切換装置５１によって単独動作と比率動作モー
ド間で切換えられても、切換の前後で一定の速度指令信
号がモータ７゜１７．３１．３３へ加えられるから、モ
ータ７゜１７．３１．３３の回転数が変化し難い。The motor control device having such a configuration can be operated independently by the mode switching device 51 unless a rotation speed signal different from the rotation speed signal once output from the control circuit 39 is output from the control circuit 39 to the D/A conversion circuit 71. Even when switching between operation and ratio operation modes, a constant speed command signal is applied to motor 7゜17.31.33 before and after switching, so the rotation speed of motor 7゜17.31.33 is difficult to change. .

ところで、上述した実施例では、Ｄ／Ａ変換回路７１も
しくは速度指令信号出力回路７３にう・ノチ機能もしく
はメモリー機能を持たせてモード切換え前後に一定の速
度指令信号が出力される構成としたが１本発明はこれに
限定されない。Incidentally, in the above-described embodiment, the D/A conversion circuit 71 or the speed command signal output circuit 73 is provided with a back-and-forth function or a memory function so that a constant speed command signal is output before and after mode switching. 1. The present invention is not limited to this.

例えば、モード切換装置５１によるモード切換え時に、
制御回路３９が直近の回転数を回転数記憶回路６１から
読み出してＤ／Ａ変換回路７１へ出力するよう構成して
も９本発明の目的達成が可能である。For example, when switching modes by the mode switching device 51,
The object of the present invention can also be achieved by configuring the control circuit 39 to read the latest rotation speed from the rotation speed storage circuit 61 and output it to the D/A conversion circuit 71.

また、上述した構成では押出成形ライン中の複数のモー
タの主従関係を任意に変更設定可能となるうえ、主モー
タの回転数から従モータの回転数を比率演算して出力可
能であり、押出成形ラインを種々に変更しても、各モー
タの接続構成を変更することなく各種の押出成形ライン
における最適な速度指令系を簡単に構成できる。In addition, with the above-mentioned configuration, it is possible to arbitrarily change the master-slave relationship of multiple motors in the extrusion molding line, and it is also possible to calculate the ratio of the rotation speed of the slave motor to the rotation speed of the main motor and output it. Even if the line is changed in various ways, an optimal speed command system for various extrusion molding lines can be easily configured without changing the connection configuration of each motor.

〔発明の効果〕〔Effect of the invention〕

、以上説明したように本発明のモータ制御装置は。 As explained above, the motor control device of the present invention is as follows.

押出成形ラインに配置された複数のモータに対し。For multiple motors located on an extrusion line.

速度指令手段が単独動作と比率動作モードの切換えの前
後に同じ速度指令信号を出力する構成２例えばモード切
換手段の切換えによって速度指令手段自体が直近の同じ
速度指令信号を出力する構成や、モード切換手段の切換
えによって制御手段が記憶手段から直近の回転数信号を
速度指令手段へ出力するに構成としたから、動作モード
を比率動作モードと単独動作モード間で切換えても、切
換え時点で各モータに速度差が生じない。A configuration in which the speed command means outputs the same speed command signal before and after switching between the independent operation mode and the ratio operation mode 2 For example, a configuration in which the speed command means itself outputs the same latest speed command signal by switching the mode switching means, By switching the means, the control means outputs the most recent rotational speed signal from the storage means to the speed command means, so even if the operation mode is switched between the ratio operation mode and the individual operation mode, each motor is not affected at the time of switching. No speed difference occurs.

そのため、押出成形ラインの安定的な運転を確保できる
利点があるうえ、各モータの接続構成を変更する必要が
ないから構成が簡単で作業性が良好である。Therefore, there is an advantage that stable operation of the extrusion molding line can be ensured, and there is no need to change the connection configuration of each motor, so the configuration is simple and workability is good.

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

第１図は本発明に係る特許請求の範囲に対応したクレー
ム対応図、第２図は本発明のモータ制御装置を含む押出
成形ラインの一例を示す概略図。 第３図は本発明に係るモータ制御装置の一実施例を示す
ブロック図、第４図は本発明における各モータの主従関
係およびリミット回転数の設定例を第３図の表示装置で
示した図、第５図は各モータのリミット回転数を説明す
る図である。 １・・・・・・・・・・・・・・・・・・押出機３・・
・・・・・・・・・・・・・・・・成形機台５・・・・
・・・・・・・・・・・・・・主スクリユ−７・・・・
・・・・・・・・・・・・・・押出用モータ９．１９．
３５．３７・・・センサ １３・・・・・・・・・・・・・・・・・・副スクリユ
−１５・・・・・・・・・・・・・・・・・・原料フィ
ーダ装置１７・・・・・・・・・・・・・・・・・・フ
ィーダ用モータ２５・・・・・・・・・・・・・・・・
・・成形品２７．２９・・・・・・・・・引取機FIG. 1 is a claim correspondence diagram corresponding to the claims of the present invention, and FIG. 2 is a schematic diagram showing an example of an extrusion molding line including the motor control device of the present invention. FIG. 3 is a block diagram showing one embodiment of a motor control device according to the present invention, and FIG. 4 is a diagram showing an example of setting the master-slave relationship and limit rotation speed of each motor in the present invention using the display device of FIG. , FIG. 5 is a diagram illustrating the limit rotation speed of each motor. 1......Extruder 3...
・・・・・・・・・・・・・・・Molding machine stand 5・・・・・・
・・・・・・・・・・・・・・・Main Screw-7・・・・
・・・・・・・・・・・・・・・Extrusion motor 9.19.
35.37 Sensor 13 Subscrew 15 Raw material feeder Device 17......Feeder motor 25......
・・Molded product 27.29・・・・・・・Take-up machine

Claims (3)

【特許請求の範囲】[Claims] （１）押出成形機を含む押出成形ラインに配置された複
数のモータと、 これら複数のモータの回転数を設定する回転数設定手段
と、 前記各モータの回転数を測定する回転数測定手段と、 前記各モータ間の互いの主従関係を設定する主従関係設
定手段と、 少なくとも前記各モータの単独動作と比率動作を切換え
るモード切換手段と、 前記押出成形ラインの動作速度を設定するライン速度設
定手段と、 入力された回転数信号から前記主および従モータの速度
指令信号を該当する前記主および従モータへ出力すると
ともに、前記モード切換手段の切換え動作の前後に直近
の同じ速度指令信号を出力する速度指令手段と、 前記単独動作時には前記回転数設定手段からの回転数を
出力し、前記比率動作時には、前記回転数測定手段から
の各モータの測定回転数信号又は前記速度指令手段から
前記各モータへの速度指令信号に基づいて前記各モータ
間の回転数比率を演算し、かつ前記ライン速度設定手段
からの速度設定によって前記回転数比率に基づく前記主
および従モータの回転数信号を演算して前記速度指令手
段へ出力する制御手段と、 を具備し、前記単独動作と比率動作の切換え時における
前記モータの速度差を抑えてなることを特徴とする押出
成形ラインのモータ制御装置。(1) A plurality of motors arranged in an extrusion molding line including an extrusion molding machine, a rotation speed setting means for setting the rotation speed of the plurality of motors, and a rotation speed measuring means for measuring the rotation speed of each of the motors. , master-slave relationship setting means for setting a mutual master-slave relationship between the motors; mode switching means for switching at least between independent operation and ratio operation of each motor; and line speed setting means for setting the operating speed of the extrusion molding line. and outputting speed command signals for the main and slave motors to the corresponding main and slave motors based on the input rotational speed signal, and outputting the same most recent speed command signals before and after the switching operation of the mode switching means. a speed command means, which outputs the rotation speed from the rotation speed setting means during the independent operation, and outputs a rotation speed signal from the rotation speed measuring means or a measured rotation speed signal of each motor from the speed command means during the ratio operation; A rotation speed ratio between the motors is calculated based on a speed command signal to the motor, and a rotation speed signal of the main and slave motors is calculated based on the rotation speed ratio based on the speed setting from the line speed setting means. A motor control device for an extrusion molding line, comprising: a control means for outputting an output to the speed command means, and suppressing a speed difference of the motor when switching between the single operation and the ratio operation. （２）速度指令手段自体が、前記モード切換手段の切換
え動作の前後にわたって直近の速度指令信号を出力し続
けるものである請求項１記載の押出成形ラインのモータ
制御装置。(2) The motor control device for an extrusion molding line according to claim 1, wherein the speed command means itself continues to output the latest speed command signal before and after the switching operation of the mode switching means. （３）前記各モータについての直近の回転数を記憶する
記憶手段が前記制御手段に接続され、前記モード切換手
段の切換え動作によって前記制御手段は前記記憶手段か
らの前記直近の回転数信号を出力するものである請求項
１記載の押出成形ラインのモータ制御装置。(3) Storage means for storing the most recent number of revolutions for each motor is connected to the control means, and the control means outputs the most recent number of revolutions signal from the storage means by the switching operation of the mode switching means. 2. A motor control device for an extrusion molding line according to claim 1.
JP1090803A 1989-04-12 1989-04-12 Motor control device for extrusion molding line Expired - Fee Related JPH0624753B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1090803A JPH0624753B2 (en) 1989-04-12 1989-04-12 Motor control device for extrusion molding line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1090803A JPH0624753B2 (en) 1989-04-12 1989-04-12 Motor control device for extrusion molding line

Publications (2)

Publication Number Publication Date
JPH02270529A true JPH02270529A (en) 1990-11-05
JPH0624753B2 JPH0624753B2 (en) 1994-04-06

Family

ID=14008749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1090803A Expired - Fee Related JPH0624753B2 (en) 1989-04-12 1989-04-12 Motor control device for extrusion molding line

Country Status (1)

Country Link
JP (1) JPH0624753B2 (en)

Also Published As

Publication number Publication date
JPH0624753B2 (en) 1994-04-06

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