JP2515506B2 - Mold clamping control method for injection compression molding machine - Google Patents

Mold clamping control method for injection compression molding machine

Info

Publication number
JP2515506B2
JP2515506B2 JP61189849A JP18984986A JP2515506B2 JP 2515506 B2 JP2515506 B2 JP 2515506B2 JP 61189849 A JP61189849 A JP 61189849A JP 18984986 A JP18984986 A JP 18984986A JP 2515506 B2 JP2515506 B2 JP 2515506B2
Authority
JP
Japan
Prior art keywords
mold clamping
speed
mold
compression
compression molding
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.)
Expired - Lifetime
Application number
JP61189849A
Other languages
Japanese (ja)
Other versions
JPS6345020A (en
Inventor
原田　　進
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)

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に於け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 [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］ 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。[Prior Art] The conventional mold clamping control of this type is a method of controlling the mold clamping pressure in multiple stages in accordance with injection plunger or screw positions set in multiple stages.

［発明が解決しようとする問題点］ 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リをきらうものや粘性の高い樹脂
などの主として転写性を成形時に要求され型締保圧を必
要としない成形品に対しては、圧力制御では対応し難
い。また繰返し成形を行う場合、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。[Problems to be Solved by the Invention] Since the conventional mold clamping control method is mold clamping pressure control, transferability is mainly used for thin plate-shaped molded products, especially those that are not warped or highly viscous resin. Pressure control is difficult to deal with molded products that are required at the time of molding and do not require mold clamping holding pressure. When performing repeated molding, for example, even if the set mold clamping pressure is controlled accurately, the mold clamping speed becomes unstable due to changes in mold temperature, hydraulic oil temperature, etc. Is difficult to improve.

［問題点を解決するための手段］ 従って発明者等は前述の様な問題を解決する為に、射
出圧縮成形における圧縮の為の圧縮代の型開き位置より
行う型締制御方法において、圧縮代δを複数個に区分
し、圧縮代δ中の予め設定する型締め位置に対応して移
動ダイプレートの型締速度が段階的に変化する型締速
度、又は勾配をなす折れ線状に変化する型締速度を設定
器に設定し、前記移動ダイプレートの移動位置検出用位
置検出器が検出する前記予め設定する前記移動ダイプレ
ートの型締め位置における型締速度を速度検出器によっ
て検出し、前記検出した型締速度が前記設定器に設定し
た速度と一致するように型締速度を制御する射出圧縮成
形機の型締制御方法とした。[Means for Solving the Problems] Therefore, in order to solve the above-mentioned problems, the inventors of the present invention used a mold clamping control method in which the mold opening control position of the compression margin for compression in injection compression molding is used. Mold that divides δ into multiple parts and moves in a stepwise manner at the mold clamping speed of the moving die plate corresponding to the preset mold clamping position in the compression allowance δ, or a mold that changes in a linear shape with a slope The clamping speed is set in a setter, and the mold clamping speed at the preset mold clamping position of the movable die plate detected by the position detector for detecting the moving position of the movable die plate is detected by the speed detector, and the detection is performed. The mold clamping control method for the injection compression molding machine is such that the mold clamping speed is controlled so that the mold clamping speed matches the speed set in the setting device.

［実施例］ 次に第１図に例示する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。[Embodiment] Next, the apparatus and control used in the method of the present invention will be described with reference to the example illustrated in FIG.

第１図に示す様に移動ダイプレート１に型締位置を検
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、その検出値をサンプリング部３に於て電気的に時間
処理を行って各位置の速度を検出する。設定器４には、
型圧縮時のキャビティ内での溶融樹脂の拡がりの挙動に
合せた予め設定する位置に対応してその速度が段階的に
変化するという意味の型締速度の多段プログラム、また
は、予め設定する位置に対応してその速度が勾配をなす
折れ線状に変化するという意味の多段勾配プログラムを
設定し、油圧源５を作動させると圧縮の為の型開き位置
δに金型が達した時点より、型締シリンダー６による型
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で検出する速度とを比較演算部８に於て速度
偏差が零となる様にサーボアンプ９を介して電磁サーボ
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 FIG. 1, a position detector 2 for detecting the mold clamping position, for example, a linear encoder is attached to the movable die plate 1, the position of the movable die plate 1 is continuously detected, and the detected value is The sampling unit 3 electrically processes the time to detect the speed at each position. In the setting device 4,
A multi-step program of the mold clamping speed, which means that the speed changes stepwise in accordance with the preset position according to the spreading behavior of the molten resin in the cavity during mold compression, or at a preset position Correspondingly, when a multi-step gradient program is set, which means that the speed changes in the shape of a polygonal line with a gradient, and when the hydraulic source 5 is activated, the mold clamping from the time when the mold reaches the mold opening position δ for compression. In the mold clamping by the cylinder 6, the mold clamping speed program set in the setting device 4 and the speed detected by the speed detector 7 are compared via the servo amplifier 9 so that the speed deviation becomes zero in the comparison operation part 8. Feedback is provided to the electromagnetic servo valve 10 to perform closed-loop mold clamping speed control.

［発明の効果］ 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の少なくなり繰返し安定成形
が行える。[Effects of the Invention] This control method stabilizes the mold clamping speed in the initial stage of mold compression of injection compression molding, and the variation of the mold clamping speed due to variations in mold temperature, hydraulic oil temperature, etc. is reduced, and repeated stable molding is achieved. You can do it.

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

第１図は本発明の一実施例を示し、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 shows a block diagram of mold clamping control. In the figure, δ ... Compression allowance for compression, 1 ... Moving die plate, 2 ... Position detector, 3 ... Sampling unit, 4 ... Setting device, 7 ... Speed detector, 8 ... Comparison calculation unit, 9 ... Servo amplifier, 10 ... Solenoid servo valve.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】射出圧縮成形における圧縮の為の圧縮代の
型開き位置より行う型締制御方法において、圧縮代δを
複数個に区分し、圧縮代δ中の予め設定する型締め位置
に対応して移動ダイプレートの型締速度が段階的に変化
する型締速度、又は勾配をなす折れ線状に変化する型締
速度を設定器に設定し、前記移動ダイプレートの移動位
置検出用位置検出器が検出する前記予め設定する前記移
動ダイプレートの型締め位置における型締速度を速度検
出器によって検出し、前記検出した型締速度が前記設定
器に設定した速度と一致するように型締速度を制御する
射出圧縮成形機の型締制御方法。1. A mold clamping control method in which a mold opening position of a compression allowance for compression in injection compression molding is performed, and a compression allowance δ is divided into a plurality of parts and corresponds to a preset mold clamping position in the compression allowance δ. Then, the mold clamping speed at which the mold clamping speed of the moving die plate changes stepwise, or the mold clamping speed at which the mold clamping speed changes in the form of an inclined polygonal line is set in the setting device, and the position detector for detecting the moving position of the moving die plate is set. The mold clamping speed at the mold clamping position of the preset movable die plate detected by is detected by a speed detector, and the mold clamping speed is set so that the detected mold clamping speed matches the speed set in the setting device. A method for controlling a mold clamping control of an injection compression molding machine.
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 JPS6345020A (en) 1988-02-26
JP2515506B2 true 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)

Families Citing this family (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

Family Cites Families (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

Also Published As

Publication number Publication date
JPS6345020A (en) 1988-02-26

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Legal Events

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EXPY Cancellation because of completion of term