JPH0771815B2 - Control method of injection compression molding machine - Google Patents

Control method of injection compression molding machine

Info

Publication number
JPH0771815B2
JPH0771815B2 JP61179575A JP17957586A JPH0771815B2 JP H0771815 B2 JPH0771815 B2 JP H0771815B2 JP 61179575 A JP61179575 A JP 61179575A JP 17957586 A JP17957586 A JP 17957586A JP H0771815 B2 JPH0771815 B2 JP H0771815B2
Authority
JP
Japan
Prior art keywords
mold clamping
pressure
control
compression molding
injection compression
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
JP61179575A
Other languages
Japanese (ja)
Other versions
JPS6335327A (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 JP61179575A priority Critical patent/JPH0771815B2/en
Priority to DE3725167A priority patent/DE3725167C2/en
Priority to GB8717938A priority patent/GB2193681B/en
Publication of JPS6335327A publication Critical patent/JPS6335327A/en
Priority to US07/300,720 priority patent/US4917840A/en
Publication of JPH0771815B2 publication Critical patent/JPH0771815B2/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
    • 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
    • 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法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。The present invention relates to a mold clamping control method in an injection compression molding method,
In particular, it relates to mold clamping control of compression allowance for compression.

〔従来の技術〕[Conventional technology]

この種の従来の圧縮工程に於ける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
締圧力のみを多段にプログラム制御する方法である。The mold clamping control in the conventional compression process of this type is a method in which only the mold clamping pressure is controlled in multiple stages in accordance with the injection plunger or screw positions set in multiple stages.

〔発明が解決しようとする問題点〕 従来の圧縮工程に於ける型締制御法は型締圧力の制御の
みで行っている為、緻密性は良いが薄い板状の成形品や
粘性の高い樹脂などの転写性を成形時に要求される成形
品に対しては、転写性に欠け圧力制御のみでは対応し難
い。[Problems to be Solved by the Invention] Since the conventional mold clamping control method in the compression process is performed only by controlling the mold clamping pressure, the compactness is good, but a thin plate-shaped molded product or a highly viscous resin is used. For molded products that require transferability such as when molding, lack of transferability and it is difficult to deal with pressure control alone.

また繰返し成形を行う場合、例えば設定した型締圧力が
制度よく制御されたとしても、型締速度を制御していな
い為、金型温度、作動油温等の変化により型締速度が一
定せずに常に不安定となり、その結果転写性に関する品
質の向上は難しい。When performing repetitive molding, for example, even if the set mold clamping pressure is accurately controlled, the mold clamping speed is not controlled, so the mold clamping speed is not constant due to changes in mold temperature, hydraulic oil temperature, etc. Therefore, 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を解決する為に、射出
圧縮成形に於て、圧縮の為の型開き位置（第１図δ）よ
り行う圧縮代の型締制御を型締初期には、単段ないし多
段の速度制御で行い、転写性を改善すると共に、樹脂充
填完了後の任意に定める時点より速度制御から単段ない
し多段の圧力制御に切換えて型締保圧を行い緻密性の良
い製品を得ることとした。Therefore, in order to solve the above-mentioned problems, the inventors of the present invention, in injection compression molding, perform mold clamping control of the compression allowance at the mold opening position (δ in FIG. 1) for compression at the initial stage of mold clamping. , Single-step or multi-step speed control is performed to improve transferability, and the speed control is switched to single-step or multi-step pressure control from a predetermined point after the completion of resin filling to maintain mold clamping pressure to achieve preciseness. I decided to get a good product.

〔実施例〕〔Example〕

次に本発明の実施例を移動ダイプレート１の位置を検出
する例により図面について説明すると、第１図および第
２図に於て設定器２には圧縮代に於ける移動ダイプレ
ート１の位置を任意に設定し、設定器３には任意に設
定する型締速度制御プログラムを、設定器４には任意
に設定する型締圧力制御プログラムをそれぞれ設定し、
圧縮代型締の初期に於ては切換スイッチ５を図の如く型
締速度制御系６に選択し、油圧源７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８への圧油は電磁サーボ弁９により流量制御さ
れ、移動ダイプレートは設定器３の設定に基づき単段
ないし多段に速度制御されて移動する。移動ダイプレー
ト１が予め、設定器２に設定された位置に達した時、
位置検出器10の信号により切換スイッチ５は型締圧力制
御系11に切換り、電磁サーボ弁９により型締制御は設定
器４の設定に基づき単段ないし多段に圧力制御されて
型締する。Next, an embodiment of the present invention will be described with reference to the drawings in which the position of the movable die plate 1 is detected. The position of the movable die plate 1 in the compression allowance is shown in FIG. 1 and FIG. , The mold clamping speed control program to be arbitrarily set to the setter 3, and the mold clamping pressure control program to be arbitrarily set to the setter 4.
In the initial stage of the compression allowance mold clamping, the changeover switch 5 is selected to the mold clamping speed control system 6 as shown in the figure, and when the hydraulic pressure source 7 is operated, from the time when the mold reaches the mold opening position δ for compression. The flow rate of the pressure oil to the mold clamping cylinder 8 is controlled by the electromagnetic servo valve 9, and the moving die plate is moved in a single-stage or multi-stage speed control based on the setting of the setter 3. When the moving die plate 1 reaches the position set in advance by the setting device 2,
The changeover switch 5 is changed over to the mold clamping pressure control system 11 by the signal from the position detector 10, and the mold clamping control is controlled by the electromagnetic servo valve 9 based on the setting of the setter 4 in a single-stage or multistage pressure to perform the mold clamping.

上述した実施例は型締制御の切換スイッチ５の切換えを
位置検出器10による場合を説明したが、樹脂圧負荷に対
抗する型締シリンダー圧を検知する型締圧検出器12およ
び金型内樹脂圧を検知する樹脂圧検出器13によっても行
うことが出来る。In the above-mentioned embodiment, the case where the changeover switch 5 of the mold clamping control is switched by the position detector 10 is explained, but the mold clamping pressure detector 12 for detecting the mold clamping cylinder pressure against the resin pressure load and the resin in the mold. This can also be performed by the resin pressure detector 13 that detects the pressure.

〔発明の効果〕〔The invention's effect〕

本制御方法により種々な樹脂および金型に対してきめ細
かな条件設定を行えると同時に、射出圧縮工程前半に於
ける型締速度制御により速度制御の利点である転写性に
優れた成形品をうることが出来る。又射出圧縮工程後半
を型締圧力制御により圧力制御の利点である緻密性に優
れた成形品を安定的に成形出来る。With this control method, detailed conditions can be set for various resins and molds, and at the same time molded products with excellent transferability, which is an advantage of speed control, can be obtained by controlling the mold clamping speed in the first half of the injection compression process. Can be done. Further, by controlling the mold clamping pressure in the latter half of the injection compression process, it is possible to stably mold a molded product having excellent compactness, which is an advantage of pressure control.

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

第１図および第２図は本発明の一実施例を示し、第１図
は型締装置の横断面図、第２図はその型締制御のブロッ
ク図である。 δ……圧縮の為の圧縮代、12……型締圧検出器 ５……切換スイッチ、13……樹脂圧検出器 ６……型締速度制御系 ９……電磁サーボ弁 10……位置検出器 11……型締圧力制御系1 and 2 show an embodiment of the present invention. FIG. 1 is a cross-sectional view of a mold clamping device, and FIG. 2 is a block diagram of the mold clamping control. δ: Compression margin for compression, 12: Mold clamping pressure detector 5: Changeover switch, 13: Resin pressure detector 6: Mold clamping speed control system 9: Electromagnetic servo valve 10: Position detection Unit 11 ... Mold clamping pressure control system

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】射出圧縮成形に於て、圧縮の為の圧縮代の
型締制御を型締初期には単段ないし多段の速度制御で行
い、樹脂充填完了後の任意に定める時点より速度制御か
ら単段ないし多段の圧力制御に切換えて型締保圧を行う
射出圧縮成形機の制御方法。1. In injection compression molding, mold clamping control for compression for compression is performed by single-stage or multi-stage speed control at the initial stage of mold clamping, and speed control is performed from an arbitrary time point after completion of resin filling. Control method for injection compression molding machine that switches from single-stage to multi-stage pressure control to maintain mold clamping pressure. 【請求項２】特許請求の範囲第１項記載の射出圧縮成形
機の制御方法に於て、移動ダイプレートの位置を検出す
る位置検出器を設け、移動ダイプレートが設定した位置
に達した時点より型締速度制御から型締圧力制御に切換
えて型締保圧を行う制御方法。2. The method for controlling an injection compression molding machine according to claim 1, further comprising a position detector for detecting the position of the moving die plate, when the moving die plate reaches a set position. A control method that switches from mold clamping speed control to mold clamping pressure control to maintain mold clamping pressure. 【請求項３】特許請求の範囲第１項記載の射出圧縮成形
機の制御方法に於て、型締シリンダーに型締圧検出器を
取付け、型締シリンダー内の圧力が設定した圧力に達し
た時点より型締速度制御から型締圧力制御に切換えて型
締保圧を行う制御方法。3. A method for controlling an injection compression molding machine according to claim 1, wherein a mold clamping pressure detector is attached to the mold clamping cylinder, and the pressure in the mold clamping cylinder reaches a set pressure. A control method that switches from mold clamping speed control to mold clamping pressure control from the moment to maintain mold clamping pressure. 【請求項４】特許請求の範囲第１項記載の射出圧縮成形
機の制御方法に於て、金型内に樹脂圧検出器を組込み、
金型内の樹脂圧が設定した圧力に達した時点より型締速
度制御から型締圧力制御に切換えて型締保圧を行う制御
方法。4. The method for controlling an injection compression molding machine according to claim 1, wherein a resin pressure detector is incorporated in the mold.
A control method in which the mold clamping speed is switched from the mold clamping speed control to the mold clamping pressure control when the resin pressure in the mold reaches the set pressure.
JP61179575A 1986-07-30 1986-07-30 Control method of injection compression molding machine Expired - Lifetime JPH0771815B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP61179575A JPH0771815B2 (en) 1986-07-30 1986-07-30 Control method of injection compression 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
GB8717938A GB2193681B (en) 1986-07-30 1987-07-29 A method of controlling mold clamping and compression in an 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
JP61179575A JPH0771815B2 (en) 1986-07-30 1986-07-30 Control method of injection compression molding machine

Publications (2)

Publication Number Publication Date
JPS6335327A JPS6335327A (en) 1988-02-16
JPH0771815B2 true JPH0771815B2 (en) 1995-08-02

Family

ID=16068131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61179575A Expired - Lifetime JPH0771815B2 (en) 1986-07-30 1986-07-30 Control method of injection compression molding machine

Country Status (1)

Country Link
JP (1) JPH0771815B2 (en)

Families Citing this family (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
JP2556444B2 (en) * 1994-04-20 1996-11-20 ファナック株式会社 Molding control method for injection molding machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0615183B2 (en) * 1984-07-10 1994-03-02 住友化学工業株式会社 Press molding method for thermoplastic resin
JPS6327228A (en) * 1986-07-19 1988-02-04 Nissei Plastics Ind Co Mold clamping apparatus of injection and compression molding machine

Also Published As

Publication number Publication date
JPS6335327A (en) 1988-02-16

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