JPS6345020A - Control of injection compression molding machine - Google Patents

Control of injection compression molding machine

Info

Publication number
JPS6345020A
JPS6345020A JP18984986A JP18984986A JPS6345020A JP S6345020 A JPS6345020 A JP S6345020A JP 18984986 A JP18984986 A JP 18984986A JP 18984986 A JP18984986 A JP 18984986A JP S6345020 A JPS6345020 A JP S6345020A
Authority
JP
Japan
Prior art keywords
mold clamping
mold
speed
control
closed loop
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
JP18984986A
Other languages
Japanese (ja)
Other versions
JP2515506B2 (en
Inventor
Susumu Harada
進 原田
Hideo Tanaka
秀雄 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.)
Shibaura Machine Co Ltd
Original Assignee
Toshiba Machine Co 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 Toshiba Machine Co Ltd filed Critical Toshiba Machine Co Ltd
Priority to JP61189849A priority Critical patent/JP2515506B2/en
Priority to GB8717938A priority patent/GB2193681B/en
Priority to DE3725167A priority patent/DE3725167C2/en
Publication of JPS6345020A publication Critical patent/JPS6345020A/en
Priority to US07/300,720 priority patent/US4917840A/en
Application granted granted Critical
Publication of JP2515506B2 publication Critical patent/JP2515506B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/80—Measuring, controlling or regulating of relative position of mould parts
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/7653—Measuring, controlling or regulating mould clamping forces
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5833—Measuring, controlling or regulating movement of moulds or mould parts, e.g. opening or closing, actuating

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a product of favorable transferability, by performing mold clamping control to be performed from a mold breaking position for compression by closed loop multi-stage program control and closed loop multi-stage gradient program control of a mold clamping speed. CONSTITUTION:A position detector 2 for detection of a mold clamping position is fitted to a movable die plate 1 and a position of the movable die plate 1 is detected continuously. Time treatment of the same is performed electrically at a sampling part 3 and speeds at respective positions are detected. A multi-stage program and gradient program of a mold clamping speed set up arbitrarily are set up and a hydraulic pressure source 5 is actuated. Then from a point of time of arrival of a mold at a mold breaking position delta for compression, feedback of mold clamping due to a mold clamping cylinder 6 is applied to a solenoid servovalve 10 through a servoamplifier 9 so that a speed deviation between a mold clamping speed set up on a setting instrument 4 and a speed to be detected by a speed detector 7 turns zero on a comparative operation part 8 and control of the mold clamping speed of a closed loop is performed. Little dispersion of the mold clamping speed due to a variation of a mold temperature or a hydraulic oil temperature occurs and stabilized molding is performed.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は射出圧縮成形法に於げる型締制御方法に係り、
特に圧縮のための圧縮代の型締制御に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a mold clamping control method in injection compression molding.
In particular, it relates to mold clamping control of compression allowance for compression.

〔従来の技術〕[Conventional technology]

この種の従来の型締制御は多段に設定された射出プラン
ジャー又はスクリュ位置に対応して型締圧力を多段にプ
ログラム制御する方法である。This type of conventional mold clamping control is a method in which mold clamping pressure is program-controlled in multiple stages corresponding to the injection plunger or screw positions set in multiple stages.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従来の型締制御法は型締圧力制御である為、薄い板状の
成形品の様に特にソ１．Ｉ　Ｙきらうものや粘性の高い
樹脂などの主として転写性？成形時に要求され型締保圧
？必要としない成形品に対しては、圧力制御では対応し
難い。また繰返し成形？行う場合、例えば設定した型締
圧力が精度よく制御されたとしても金型温度、作動油温
等の変化により型締速度は一定せずに不安定となり、そ
の結果転写性に関する品質の向上は難しい。Since the conventional mold clamping control method is mold clamping pressure control, especially for thin plate-shaped molded products. Is it mainly transferability of things you don't like or highly viscous resins? Is mold clamping pressure required during molding? Pressure control is difficult to handle for molded products that are not needed. Repeated molding again? For example, even if the set mold clamping pressure is accurately controlled, the mold clamping speed will not be constant due to changes in mold temperature, hydraulic oil temperature, etc., and as a result, it is difficult to improve the quality of transferability. .

〔問題点を解決する為の手段〕[Means for solving problems]

従って発明者等は前述の様な問題乞解決する為に、射出
圧縮成形に於て、圧縮の為の型開き位置（第１図δ）よ
り行う型締制御乞型締速度の閉ループ多段プログラム制
御および閉ループ多段勾配プログラム制御で行い、転写
性の良い製品ビ得ることとした。Therefore, in order to solve the above-mentioned problems, the inventors conducted mold clamping control from the mold opening position for compression (δ in Figure 1) in injection compression molding, and closed-loop multi-stage program control of the mold clamping speed. The process was carried out using closed-loop multi-stage gradient program control to obtain a product with good transferability.

〔実施例〕〔Example〕

次に第１図に例示すろところに従って本発明の方法に使
用する装置および制御について説明する。Next, the apparatus and control used in the method of the present invention will be explained according to the example shown in FIG.

第１図に示す様に移動グイプレート１に型締位置？検出
する為の位置検出器２、例えばリニアエンコーダを取付
け、連続的に前記の移動ダイプレート１の位置を検出し
、その検出値？サンプリング部３に於て電気的に時間処
理７行って各位置の速度馨検出する。設定器４には任意
に設定する型締速度の多段プログラムおよび勾配プログ
ラムン設定し、油圧源５馨作動させると圧縮の為の型開
４友 きＳ置δに金型が達した時点より、型締シリンダー６に
よろ型締は前記設定器４に設定された型締速度プログラ
ムと速度検出器７で検出する速度と？比較演算部８に於
て速度偏差が零となる様にサーボアンプ９乞介して電磁
サーボ弁１０にフィードバックされて閉ループの型締速
度制御が行われる。As shown in Figure 1, move the movable guide plate 1 to the mold clamping position? A position detector 2 for detection, such as a linear encoder, is attached, and the position of the moving die plate 1 is continuously detected, and the detected value? The sampling section 3 electrically performs time processing 7 to detect the velocity at each position. The setting device 4 is set with a multi-stage program for mold clamping speed and a slope program, which can be arbitrarily set, and when the hydraulic power source 5 is activated, from the time when the mold reaches the mold opening position δ for compression, The mold clamping by the mold clamping cylinder 6 is performed based on the mold clamping speed program set in the setting device 4 and the speed detected by the speed detector 7? In the comparison calculation unit 8, the speed deviation is fed back to the electromagnetic servo valve 10 via the servo amplifier 9, and closed-loop mold clamping speed control is performed.

〔発明の効果〕〔Effect of the invention〕

本制御法により射出圧縮成形の型圧縮初期の型締速度が
安定すると共に、尚且つ金型温度、作動油温等の変動に
よる型締速度のバラツキも少な（なり繰返し安定成形が
行える。With this control method, the mold clamping speed at the initial stage of mold compression in injection compression molding is stabilized, and variations in mold clamping speed due to fluctuations in mold temperature, hydraulic oil temperature, etc. are also small (and stable molding can be performed repeatedly).

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

第１図は本発明の一実施例り示し、型締制御のブロック
図を示す。 図に於て、δ・・・圧縮の為の圧縮代、１・・・移動ダ
イプレート、２・・・位置検出器、３・・・サンプリン
グ部、４・・・設定器、７・・・速度検出器、８・・・
比較演算部、９・・・サーボアンプ、　１０・・電磁サ
ーボ弁。FIG. 1 shows an embodiment of the present invention and is a block diagram of mold clamping control. In the figure, δ...compression allowance for compression, 1... moving die plate, 2... position detector, 3... sampling section, 4... setting device, 7... Speed detector, 8...
Comparison calculation section, 9... Servo amplifier, 10... Electromagnetic servo valve.

Claims (1)

【特許請求の範囲】[Claims] 射出圧縮成形に於て、圧縮の為の圧縮代の型開き位置よ
り行う型締制御を型締速度の閉ループ多段プログラム制
御および閉ループ多段勾配プログラム制御で行う射出圧
縮成形機の制御方法。In injection compression molding, a control method for an injection compression molding machine performs mold clamping control from the mold opening position of the compression allowance for compression by closed loop multistage program control of mold clamping speed and closed loop multistage gradient program control.
JP61189849A 1986-07-30 1986-08-13 Mold clamping control method for injection compression molding machine Expired - Lifetime JP2515506B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP61189849A JP2515506B2 (en) 1986-08-13 1986-08-13 Mold clamping control method for injection compression molding machine
GB8717938A GB2193681B (en) 1986-07-30 1987-07-29 A method of controlling mold clamping and compression in an injection molding machine
DE3725167A DE3725167C2 (en) 1986-07-30 1987-07-29 Method for controlling the mold locking and compression of a plastic of an injection molding machine injected in a mold space of an injection mold and injection molding machine
US07/300,720 US4917840A (en) 1986-07-30 1989-01-25 Mold compression control process for an injection molding machine and apparatus thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61189849A JP2515506B2 (en) 1986-08-13 1986-08-13 Mold clamping control method for injection compression molding machine

Publications (2)

Publication Number Publication Date
JPS6345020A true JPS6345020A (en) 1988-02-26
JP2515506B2 JP2515506B2 (en) 1996-07-10

Family

ID=16248222

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61189849A Expired - Lifetime JP2515506B2 (en) 1986-07-30 1986-08-13 Mold clamping control method for injection compression molding machine

Country Status (1)

Country Link
JP (1) JP2515506B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01241420A (en) * 1988-03-24 1989-09-26 Komatsu Ltd Molding process and molding device of injection compression molding machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60242028A (en) * 1984-04-11 1985-12-02 Mitsubishi Heavy Ind Ltd Injection compression molding method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60242028A (en) * 1984-04-11 1985-12-02 Mitsubishi Heavy Ind Ltd Injection compression molding method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01241420A (en) * 1988-03-24 1989-09-26 Komatsu Ltd Molding process and molding device of injection compression molding machine
JPH0523575B2 (en) * 1988-03-24 1993-04-05 Komatsu Mfg Co Ltd

Also Published As

Publication number Publication date
JP2515506B2 (en) 1996-07-10

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term