JPS62199418A - Process for controlling injection molding machine - Google Patents
Process for controlling injection molding machineInfo
- Publication number
- JPS62199418A JPS62199418A JP4214286A JP4214286A JPS62199418A JP S62199418 A JPS62199418 A JP S62199418A JP 4214286 A JP4214286 A JP 4214286A JP 4214286 A JP4214286 A JP 4214286A JP S62199418 A JPS62199418 A JP S62199418A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- pressure
- molding
- reference pattern
- sensed
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 12
- 238000001746 injection moulding Methods 0.000 title description 3
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 238000000748 compression moulding Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- 238000005070 sampling Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〈発明の属する技術分野〉
本発明は射出成形機の制御方法に係り、特に金型をわず
かに開いた状態で樹脂材料を射出し、その後型締を行う
射出圧縮成形の制御方法に関する。[Detailed description of the invention] <Technical field to which the invention pertains> The present invention relates to a method of controlling an injection molding machine, and particularly relates to injection compression molding in which a resin material is injected with a mold slightly open and the mold is then clamped. Concerning a control method.
〈従来技術とその欠点〉
射出成形機における射出圧縮成形はプラスチックレンズ
やディスク等のオプチカル部品の成形（−用いられてお
り、金型をわずかに開いた状態で、キアビティ内に樹脂
材料を射出充填した後、前述の開き分だけ、型閉じを行
うことで精密成形や厚肉成形を行っている。<Prior art and its drawbacks> Injection compression molding in an injection molding machine is used to mold optical parts such as plastic lenses and disks (-).The mold is slightly opened and resin material is injected and filled into the cavity. After that, the mold is closed by the amount of opening mentioned above to perform precision molding and thick-walled molding.
この射出圧縮成形は従来、射出充填後の型閉じに際して
は樹脂材料の収縮に対応した型締制御の設定に関して、
経験を要する部分が多かった。Conventionally, in injection compression molding, when closing the mold after injection filling, the setting of mold clamping control corresponding to the contraction of the resin material has been carried out.
There were many parts that required experience.
また型締制御の設定が良好に行われても、金型温度や作
動油温の変化等による変動要因により成形にバラツキを
生じ、繰返し成形運転を行うため（二は不都合であった
。Furthermore, even if the mold clamping control is set well, variations in mold temperature, hydraulic oil temperature, etc. can cause variations in molding, resulting in repeated molding operations (the second problem is inconvenient).
〈発明の目的〉
本発明は前述のような欠点を取除き、繰返し良品の成形
が出来るような射出圧縮成形方法を提供することを目的
とする。<Objective of the Invention> An object of the present invention is to provide an injection compression molding method that eliminates the above-mentioned drawbacks and enables repeatable molding of good products.
〈発明の概要〉
前述の目的を達成するため、射出工程中または射出完了
後の任意の時点より型締圧力を変化させる射出圧縮成形
の制御方法において、金型内に組込まれた圧力検出装置
又は型締シリンダに取付だ油圧検出装置により成形工程
中の圧力変化状態を多点サンプリングし、良品成形時の
前記圧力変化状態を基準パターンとし、その後の成形は
前記基準パターンと前記検出装置の検出する検出値との
偏差を零とするよう型締圧力を閉ループ制御ことを特徴
とする射出圧縮成形の制御方法とした。<Summary of the Invention> In order to achieve the above-mentioned object, there is provided a control method for injection compression molding in which the mold clamping pressure is changed from an arbitrary point during the injection process or after completion of injection, using a pressure detection device or a pressure detection device built into the mold. The pressure change state during the molding process is sampled at multiple points by an oil pressure detection device attached to the mold clamping cylinder, and the pressure change state during molding of a good product is used as a reference pattern, and subsequent molding is detected by the reference pattern and the detection device. A control method for injection compression molding is characterized in that the mold clamping pressure is controlled in a closed loop so that the deviation from the detected value is zero.
〈実施例〉
次に第１図により本発明の１実施例を説明すると、１１
は型締シリンダで固定金型１２に対し、を行い、射出装
置１４から射出充填する樹脂材料が金型キャビティ１５
内に充填された後、前記隙間ｆなくなるように型閉じを
行うようになっている。１６は型締シリンダー１内の油
圧を検出する油圧検出器、１７は型内の樹脂材料の圧力
を検出する樹脂圧検出器で、この両検出器の検出する検
入
出値（検出パターン）−をサンプリングユニットＯ
し、基準パターンＫｊ設定の後は、前記検出器１６又は
１７の検出する検出パターンＸと基準パターＸ＃
ン一とを比較演算装置２０で比較演算を行い、偏差（Ｘ
ｏ−Ｘ）を予め設定器２２に設定された射出圧縮成形の
値と演算装置２１で加算演算処理され零となるよう電磁
リリーフ弁２３にフィードバックされ、閉ループ制御を
行うようになっている。<Example> Next, one example of the present invention will be explained with reference to FIG. 1.
is applied to the fixed mold 12 with a mold clamping cylinder, and the resin material to be injected and filled from the injection device 14 is injected into the mold cavity 15.
After the inside is filled, the mold is closed so that the gap f disappears. 16 is an oil pressure detector that detects the oil pressure in the mold clamping cylinder 1, and 17 is a resin pressure detector that detects the pressure of the resin material in the mold. After setting the sampling unit O and the reference pattern Kj, the detection pattern X detected by the detector 16 or 17 and the reference pattern
o−X) is added to the injection compression molding value preset in the setting device 22 by the arithmetic unit 21 and fed back to the electromagnetic relief valve 23 so that the value becomes zero, thereby performing closed loop control.
２４は前記検出器１６および１７のいづれか一方を切換
るための切換スイッチである。24 is a changeover switch for switching over either one of the detectors 16 and 17.
また本実施例は型締油圧を制御するため電磁リリーフ弁
を使用した場合を説明したが、これに限らず、例へはサ
ーボ弁等も使用出来ることは自明である。Furthermore, although this embodiment has been described using an electromagnetic relief valve to control the mold clamping oil pressure, it is obvious that the present invention is not limited to this and that a servo valve or the like can also be used.
〈効 果〉
以上説明したような構成、作用動作が行われるので従来
存在した、金型温度や作動油温等による影響は基準パタ
ーンの追従制御することで、影響を受は憎くくなり繰返
し安定成形が出来るようになった。<Effects> Since the configuration and operation described above are performed, the effects of mold temperature, hydraulic oil temperature, etc. that existed in the past can be controlled by following the reference pattern, so that they are less affected and can be repeated stably. It is now possible to mold.
第１図は本発明の１実施例を示す図。
１１・−型締シリンダ、１２・・・固定金型、１３・・
・移動金型、１４・・射出装置、１５・・・キャビティ
、１６・・・油圧検出器、１７・・・樹脂圧検出器、１
８ ・・・サンプリングユニツｌ−１１９−・・記憶ユ
ニット、２０・・・比較演算装置、２１−・・演算装置
、２２・・・設定器２３・・・電磁リリーフ弁。FIG. 1 is a diagram showing one embodiment of the present invention. 11.-mold clamping cylinder, 12.. fixed mold, 13..
- Moving mold, 14... Injection device, 15... Cavity, 16... Oil pressure detector, 17... Resin pressure detector, 1
8 Sampling unit l-119--Storage unit, 20--Comparison calculation device, 21--Arithmetic device, 22--Set device 23--Electromagnetic relief valve.
Claims (1)
を変化させる射出圧縮成形の制御方法において、金型内
に組込まれた圧力検出装置又は型締シリンダに取付た油
圧検出装置により成形工程中の圧力変化状態を多点サン
プリングし、良品成形時の前記圧力変化状態を基準パタ
ーンとし、その後の成形は前記基準パターンと前記検出
装置の検出する検出値との偏差を零とするよう型締圧力
を閉ループ制御ことを特徴とする射出圧縮成形の制御方
法。In an injection compression molding control method that changes the mold clamping pressure during the injection process or at any point after the completion of injection, a pressure detection device built into the mold or a hydraulic pressure detection device attached to the mold clamping cylinder is used to control the pressure during the molding process. The pressure change state is sampled at multiple points, and the pressure change state during molding of a good product is used as a reference pattern.For subsequent molding, the mold clamping pressure is adjusted so that the deviation between the reference pattern and the detected value detected by the detection device is zero. A control method for injection compression molding characterized by closed-loop control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4214286A JPS62199418A (en) | 1986-02-27 | 1986-02-27 | Process for controlling injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4214286A JPS62199418A (en) | 1986-02-27 | 1986-02-27 | Process for controlling injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62199418A true JPS62199418A (en) | 1987-09-03 |
Family
ID=12627692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4214286A Pending JPS62199418A (en) | 1986-02-27 | 1986-02-27 | Process for controlling injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62199418A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01241417A (en) * | 1988-03-24 | 1989-09-26 | Komatsu Ltd | Molding device of injection compression molding machine and molding process |
| CN107848175A (en) * | 2015-07-22 | 2018-03-27 | 艾姆弗勒克斯有限公司 | Injection molding process using one or more external sensors as virtual cavity sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5692036A (en) * | 1979-12-27 | 1981-07-25 | Hitachi Ltd | Injection molder |
| JPS60171118A (en) * | 1984-02-16 | 1985-09-04 | Sumitomo Bakelite Co Ltd | Molding machine of circular disk recording medium |
| JPS615913A (en) * | 1984-06-20 | 1986-01-11 | Sumitomo Bakelite Co Ltd | Mold assembly of discoid recording medium base |
-
1986
- 1986-02-27 JP JP4214286A patent/JPS62199418A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5692036A (en) * | 1979-12-27 | 1981-07-25 | Hitachi Ltd | Injection molder |
| JPS60171118A (en) * | 1984-02-16 | 1985-09-04 | Sumitomo Bakelite Co Ltd | Molding machine of circular disk recording medium |
| JPS615913A (en) * | 1984-06-20 | 1986-01-11 | Sumitomo Bakelite Co Ltd | Mold assembly of discoid recording medium base |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01241417A (en) * | 1988-03-24 | 1989-09-26 | Komatsu Ltd | Molding device of injection compression molding machine and molding process |
| CN107848175A (en) * | 2015-07-22 | 2018-03-27 | 艾姆弗勒克斯有限公司 | Injection molding process using one or more external sensors as virtual cavity sensor |
| CN107848175B (en) * | 2015-07-22 | 2020-11-17 | 艾姆弗勒克斯有限公司 | Injection molding method using one or more external sensors as virtual cavity sensors |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4131596A (en) | Sensing system and method for plastic injection molding | |
| EP0130769B1 (en) | Compression molding method | |
| US3893792A (en) | Controller for injection molding machine | |
| US4917840A (en) | Mold compression control process for an injection molding machine and apparatus thereof | |
| US4942004A (en) | Method and apparatus for regulating mold clamping force in an injection molding machine | |
| US5161598A (en) | Method of controlling mold pressure pin for press casting machine | |
| US5149471A (en) | Clamp force control | |
| US4325896A (en) | Electro-hydraulic ram control apparatus | |
| US4767300A (en) | Apparatus for precision volumetric control of a moldable material in an injection molding process | |
| JP2691581B2 (en) | Injection molding apparatus and injection molding method using the same | |
| Smud et al. | Advanced process control for injection molding | |
| JPS62199418A (en) | Process for controlling injection molding machine | |
| US4913638A (en) | Apparatus for operating an injection molding process utilizing an acceptable part and process window | |
| JPS63178021A (en) | Method and apparatus for controlling injection molder | |
| US5063008A (en) | Method for precision volumetric control of a moldable material in an injection molding process | |
| US5238380A (en) | Apparatus for precision volumetric control of a moldable material | |
| JPH0452119A (en) | Injection molding method and apparatus | |
| JPH02204017A (en) | Method and apparatus for controlling injection molder | |
| JPS63125321A (en) | Controlling process of injection and compression molding | |
| US4904172A (en) | Apparatus for data acquisition and application in an injection molding process | |
| US6511618B1 (en) | Control for operating actuators in an injection molding machine | |
| JP2736683B2 (en) | Insulation control device for injection molding machine | |
| JPS6313726A (en) | Method and equipment for injection compression molding | |
| JPH0645162B2 (en) | Injection holding pressure controller | |
| JP2515506B2 (en) | Mold clamping control method for injection compression molding machine |