JPS61241118A - Low pressure mold clamping controlling device - Google Patents
Low pressure mold clamping controlling deviceInfo
- Publication number
- JPS61241118A JPS61241118A JP8264785A JP8264785A JPS61241118A JP S61241118 A JPS61241118 A JP S61241118A JP 8264785 A JP8264785 A JP 8264785A JP 8264785 A JP8264785 A JP 8264785A JP S61241118 A JPS61241118 A JP S61241118A
- Authority
- JP
- Japan
- Prior art keywords
- mold clamping
- pressure mold
- low
- low pressure
- force
- 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
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
- B29C45/7653—Measuring, controlling or regulating mould clamping forces
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
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は射出成形機或はプレス等のトグル機構を用いた
型締装置の低圧型締制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a low-pressure mold clamping control device for a mold clamping device using a toggle mechanism such as an injection molding machine or a press.
まず、低圧型締制御について第２図を参照して説明する
。First, low pressure mold clamping control will be explained with reference to FIG. 2.
金型の間に異物をかみ込んだ時、大きな型締力で型を閉
じると、金型を破損するおそれがある。そこで、金型が
完全に閉じる少し手前から型締力を小さくシ、かつ一定
の値に保つ。この型締力を小さな値に保つ制御が低圧型
締制御であり、低圧型締制御区間り、が第２図に示され
ている。低圧型締制御が始まる位置から、型が完全に閉
じる型全閉位置までの距離゛Ｌ２は９例えば数１０鴎で
ある。このように金型が全閉となる少し前から型締力を
小さく維持することにより、金型が異物をかみこんだ時
は金型を破損する前に可動プラテンが停止するようにし
て、可動プラテンが停止したことを検出することにより
、金型を破損することなく、異物のかみ込みを検出する
ことができる。If a foreign object is caught between the molds and the mold is closed with a large mold clamping force, the mold may be damaged. Therefore, the mold clamping force is kept small and constant from a little before the mold is completely closed. Control to keep this mold clamping force at a small value is low pressure mold clamping control, and the low pressure mold clamping control section is shown in FIG. The distance "L2" from the position where the low-pressure mold clamping control starts to the mold fully closed position where the mold is completely closed is 9, for example, several tens of meters. In this way, by keeping the mold clamping force low a little before the mold is fully closed, if the mold gets caught in a foreign object, the movable platen will stop before the mold is damaged, and the movable platen will stop moving. By detecting that the platen has stopped, it is possible to detect foreign matter getting caught without damaging the mold.
従来、トグル機構を用いた型締装置においては、低圧型
締を行なう時には、前記トグル機構のクロスヘッドに加
わる力が一定となるように。Conventionally, in a mold clamping device using a toggle mechanism, when performing low-pressure mold clamping, the force applied to the crosshead of the toggle mechanism is kept constant.
型締駆動装置を経験的に制御していた。The mold clamping drive device was controlled empirically.
しかしながら、トグル倍率はクロスヘッドの位置によっ
て変化し、可動プラテンに加わる力（即ち、型締力）は
。However, the toggle magnification changes depending on the position of the crosshead, and the force applied to the movable platen (i.e., the clamping force).
型締力＝クロスヘッドに加えた力Ｘトグル倍率と彦って
いた。一般に、トグル倍率は可動プラテン側にクロスヘ
ッドが押されて移動するにつれて型全閑に近い位置（一
般に低圧型締制御を行なう区間）で急激に大となシ、型
締力が大きくなってしまう。このため、クロスヘッドに
加える力を一定に制御する方法では、低圧型締時に型締
力を一定の小さい値に維持することができないという問
題点がある。Mold clamping force = force applied to the crosshead x toggle magnification. Generally, as the crosshead is pushed toward the movable platen and moves, the toggle magnification increases rapidly at a position close to the mold being completely idle (generally in the area where low-pressure mold clamping control is performed), and the mold clamping force increases. . For this reason, the method of controlling the force applied to the crosshead at a constant level has a problem in that the mold clamping force cannot be maintained at a constant small value during low-pressure mold clamping.
また、従来、一定の低圧型締力を得るために補助シリン
ダによシ直接可動プラテンに力を加える方法が用いられ
ているが、補助シリンダ分コストアップとなる。Furthermore, conventionally, in order to obtain a constant low-pressure mold clamping force, a method has been used in which a force is applied directly to the movable platen using an auxiliary cylinder, but the cost increases due to the auxiliary cylinder.
本発明の目的は、低圧型締時に可動プラテンに加わる力
（即ち、型締力）が設定値となるように、クロスヘッド
に加える力を制御するようにした。安価な低圧型締制御
装置を提供することにある。An object of the present invention is to control the force applied to the crosshead so that the force applied to the movable platen (ie, mold clamping force) during low-pressure mold clamping becomes a set value. The object of the present invention is to provide an inexpensive low-pressure mold clamping control device.
本発明の低圧型締制御装置は、型締駆動装置の駆動力を
トグル機構のクロスヘッドに伝え。The low-pressure mold clamping control device of the present invention transmits the driving force of the mold clamping drive device to the crosshead of the toggle mechanism.
該クロスヘッドに伝えられた力を、前記トグル機構を介
して、可動プラテンに伝えることによシ、一対の金型の
型締を行なう型締装置における。低圧型締を制御する低
圧型締制御装置において、前記クロスヘッド及び前記可
動プラテンのうちの少くとも一方の位置を検出する位置
検出装置と、低圧型締区間を設定するための低圧型締区
間設定器と、所定の低圧型締力を設定するための低圧型
締力設定器と、前記位置検出装置、前記低圧型締区間設
定器、前記低圧型締力設定器、及び前記型締駆動装置に
接続され、前記位置検出装置からの位置データ信号によ
って示される位置に対応したトグル倍率で、前記低圧型
締力設定器に設定された所定の低圧型締力を除算し、除
算結果を前記低圧型締区間設定器に設定された低圧型締
区間、前記型締駆動装置へ駆動制御信号として与える演
算制御装置とを有することを特徴とする。The mold clamping device clamps a pair of molds by transmitting the force transmitted to the crosshead to the movable platen via the toggle mechanism. A low-pressure mold clamping control device that controls low-pressure mold clamping includes a position detection device that detects the position of at least one of the crosshead and the movable platen, and a low-pressure mold clamping section setting for setting a low-pressure mold clamping section. a low pressure mold clamping force setting device for setting a predetermined low pressure mold clamping force, the position detection device, the low pressure mold clamping section setting device, the low pressure mold clamping force setting device, and the mold clamping drive device. A predetermined low pressure mold clamping force set in the low pressure mold clamping force setter is divided by a toggle magnification corresponding to the position connected and indicated by the position data signal from the position detection device, and the division result is applied to the low pressure mold The present invention is characterized by comprising a low-pressure mold clamping section set in a clamping section setting device, and an arithmetic and control device that supplies a drive control signal to the mold clamping drive device.
次に本発明の実施例について図面を参照して説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第１図を参照すると９本発明の一実施例による低圧型締
制御装置は、射出成形機の型締装置における低圧型締を
制御するものである。射出成形機の型締装置は、型締駆
動装置１の駆動力を、動力伝達装置２を介して、トグル
機構３のクロスヘッド４に伝え、クロスヘッド４に伝え
られた力ヲ、トグル機構３を介して、可動プラテン５に
伝えることによシ、一対の金型６の型締を行なう。７は
固定プラテンである。Referring to FIG. 1, a low-pressure mold clamping control device according to an embodiment of the present invention controls low-pressure mold clamping in a mold clamping device of an injection molding machine. The mold clamping device of the injection molding machine transmits the driving force of the mold clamping drive device 1 to the crosshead 4 of the toggle mechanism 3 via the power transmission device 2, and the force transmitted to the crosshead 4 is transmitted to the toggle mechanism 3. The pair of molds 6 are clamped by transmitting the signal to the movable platen 5 via the movable platen 5. 7 is a fixed platen.
本実施例による低圧型締制御装置は、クロスヘッド４の
位置を検出する位置検出装置８を有している。位置検出
装置８はクロスヘッド４の位置を示すクロスヘッド位置
データ信号９′ｊｆＩ：射出成形機演算制御装置１０に
伝える。演算制御装置１０には、低圧型締区間を設定す
るための低圧型締区間設定器１１と、所定の低圧型締力
を設定するための低圧型締力設定器１２とが接続されて
いる。演算制御装置１０は、低圧型締区間設定器１１か
らの低圧型締区間設定信号１３と、低圧型締力設定器１
２からの低圧型締力設定信号１４と９位置検出装置８か
らのクロスヘッド位置データ信号９とを基に、駆動制御
信号１５を作成し、型締駆動装置】に与える。The low-pressure mold clamping control device according to this embodiment includes a position detection device 8 that detects the position of the crosshead 4. The position detection device 8 transmits a crosshead position data signal 9'jfI indicating the position of the crosshead 4 to the injection molding machine arithmetic and control device 10. The arithmetic and control device 10 is connected to a low-pressure mold clamping section setting device 11 for setting a low-pressure mold clamping section and a low-pressure mold clamping force setting device 12 for setting a predetermined low-pressure mold clamping force. The arithmetic and control device 10 receives the low pressure mold clamping section setting signal 13 from the low pressure mold clamping section setting device 11 and the low pressure mold clamping force setting device 1.
A drive control signal 15 is generated based on the low-pressure mold clamping force setting signal 14 from 2 and the crosshead position data signal 9 from the position detection device 8, and is applied to the mold clamping drive device.
演算制御装置１０は、詳しくは以下の動作を行なう。即
ち、演算制御装置１０は、クロスヘッド位置データ信号
９により示される位置におけるトグル倍率を演算する。The arithmetic and control device 10 performs the following operations in detail. That is, the arithmetic and control device 10 calculates the toggle magnification at the position indicated by the crosshead position data signal 9.
又は、演算制御装置１０は、低圧型締制御を行なう区間
におけるクロスヘッド位置とトグル倍率との対応表が格
納されたメモリヲ有し、そのメモリの対応表を参照する
ことにより、クロスヘッド位置データ信号９に対応した
トグル倍率を得る。そして、演算制御装置１０は。Alternatively, the arithmetic and control unit 10 has a memory that stores a correspondence table between the crosshead position and the toggle magnification in the section where low-pressure mold clamping control is performed, and by referring to the correspondence table in the memory, the crosshead position data signal can be determined. Obtain the toggle magnification corresponding to 9. And the arithmetic and control device 10.
低圧型締力設定器１２に設定された型締力×９ζ１Ｔ＝
クロスヘッドに加える力
・・・・・・・・・・・・ （１）
の演算を行ない、演算結果を低圧型締区間設定器１１に
設定された区間の間、型締駆動装置１へ駆動制御信号１
５として伝える。Mold clamping force set in the low pressure mold clamping force setting device 12 x 9ζ1T =
The force to be applied to the crosshead (1) is calculated, and the calculation result is driven to the mold clamping drive device 1 during the interval set in the low pressure mold clamping interval setting device 11. Control signal 1
Tell it as 5.
型締駆動装置】は駆動制御信号１５により指令された力
をクロスヘッド４に伝える。クロスヘッド４からトグル
機構３を介して可動プラテン５に力が伝わるとき、可動
プラテン５に伝わる力は、クロスヘッドに加えた力にト
グル倍率を乗じた値になるので、可動プラテン５に伝わ
る力Ｆは。The mold clamping drive transmits the force commanded by the drive control signal 15 to the crosshead 4. When force is transmitted from the crosshead 4 to the movable platen 5 via the toggle mechanism 3, the force transmitted to the movable platen 5 is equal to the force applied to the crosshead multiplied by the toggle magnification, so the force transmitted to the movable platen 5 is F is.
Ｆ＝クロスヘッドに加える力×トグル倍率 ・・・・・
・（２）である。（２）式に（１）式を代入すると。F=force applied to crosshead x toggle magnification...
- (2). Substituting equation (1) into equation (2) yields.
Ｆ＝低圧型締力設定器１２に設定された型締力×□×ト
グル倍率
トグル倍率
＝低圧型締力設定器１２に設定された型締力・・・・・
・（３）
となシワ低圧型締力設定器１２に設定された所定の低圧
型締力が可動プラテン５に、低圧型締区間設定器１２゛
に設定された低圧型締区間の間、伝えられる。F = Mold clamping force set in the low pressure mold clamping force setting device 12 × □ × Toggle magnification Toggle magnification = mold clamping force set in the low pressure mold clamping force setting device 12 ...
・(3) A predetermined low-pressure mold clamping force set in the low-pressure mold clamping force setting device 12 is transmitted to the movable platen 5 during the low-pressure mold clamping period set in the low-pressure mold clamping period setting device 12. It will be done.
以上に本発明の詳細な説明したが９本発明は該実施例に
設計変更を施したものをも含むことはもちろんである。Although the present invention has been described in detail above, it goes without saying that the present invention also includes modifications to the embodiments.
例えば２位置検出装置８で、クロスヘッド４の位置を検
出する代りに可動プラテン５の位置を検出するようにし
てもよい。可動プラテン５の位置を検出することによっ
ても、クロスヘッド４の位置を検出する場合と同様に、
その時点のトグル倍率を得ることができるからである。For example, the two-position detection device 8 may detect the position of the movable platen 5 instead of detecting the position of the crosshead 4. By detecting the position of the movable platen 5, similarly to the case of detecting the position of the crosshead 4,
This is because the toggle magnification at that time can be obtained.
以上説明したように２本発明によれば、低圧型締区間の
間に、可動プラテンに発生する型締力が設定値に維持さ
れるように、クロスヘッドに加える力を制御するように
した低圧型締制御装置が得られる。と共に、従来のよう
に一定の低圧型締区間得るための補助シリンダを設ける
必要はなく精度の高い低圧型締制御装置を安価に実現で
きる。As explained above, according to the second aspect of the present invention, the low pressure is controlled to control the force applied to the crosshead so that the mold clamping force generated on the movable platen is maintained at a set value during the low pressure mold clamping section. A mold clamping control device is obtained. In addition, there is no need to provide an auxiliary cylinder to obtain a constant low-pressure mold clamping section as in the conventional method, and a highly accurate low-pressure mold clamping control device can be realized at low cost.
第１図は本発明の一実施例による低圧型締制御装置のブ
ロック図、第２図は低圧型締制御全説明するための図で
ある。
１は型締駆動装置、３はトグル機構、４はクロスヘッド
、５は可動プラテン、６は金型、８は位置検出装置、１
０は射出成形機演算制御装置。
１１は低圧型締区間設定器、１２は低圧型締力設定器。FIG. 1 is a block diagram of a low-pressure mold clamping control device according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining the entire low-pressure mold clamping control. 1 is a mold clamping drive device, 3 is a toggle mechanism, 4 is a crosshead, 5 is a movable platen, 6 is a mold, 8 is a position detection device, 1
0 is the injection molding machine calculation control unit. 11 is a low-pressure mold clamping section setting device, and 12 is a low-pressure mold clamping force setting device.
Claims (1)
に伝え、該クロスヘッドに伝えられた力を、前記トグル
機構を介して、可動プラテンに伝えることにより、一対
の金型の型締を行なう型締装置における、低圧型締を制
御する低圧型締制御装置において、前記クロスヘッド及
び前記可動プラテンのうちの少くとも一方の位置を検出
する位置検出装置と、低圧型締区間を設定するための低
圧型締区間設定器と、所定の低圧型締力を設定するため
の低圧型締力設定器と、前記位置検出装置、前記低圧型
締区間設定器、前記低圧型締力設定器、及び前記型締駆
動装置に接続され、前記位置検出装置からの位置データ
信号によって示される位置に対応したトグル倍率で、前
記低圧型締力設定器に設定された所定の低圧型締力を除
算し、除算結果を前記低圧型締区間設定器に設定された
低圧型締区間の間、前記型締駆動装置へ駆動制御信号と
して与える演算制御装置とを有することを特徴とする低
圧型締制御装置。1. The driving force of the mold clamping drive device is transmitted to the crosshead of the toggle mechanism, and the force transmitted to the crosshead is transmitted to the movable platen via the toggle mechanism, thereby clamping the pair of molds. A low-pressure mold clamping control device for controlling low-pressure mold clamping in a mold clamping device that performs low-pressure mold clamping includes a position detection device for detecting the position of at least one of the crosshead and the movable platen, and a position detection device for setting a low-pressure mold clamping section. a low-pressure mold clamping force setting device for setting a predetermined low-pressure mold clamping force, the position detection device, the low-pressure mold clamping period setting device, the low-pressure mold clamping force setting device, and dividing the predetermined low pressure mold clamping force set in the low pressure mold clamping force setting device by a toggle magnification connected to the mold clamping drive device and corresponding to the position indicated by the position data signal from the position detection device; A low-pressure mold clamping control device comprising: an arithmetic control device that supplies the division result as a drive control signal to the mold clamping drive device during the low-pressure mold clamping period set in the low-pressure mold clamping period setting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8264785A JPS61241118A (en) | 1985-04-19 | 1985-04-19 | Low pressure mold clamping controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8264785A JPS61241118A (en) | 1985-04-19 | 1985-04-19 | Low pressure mold clamping controlling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61241118A true JPS61241118A (en) | 1986-10-27 |
| JPH0150566B2 JPH0150566B2 (en) | 1989-10-30 |
Family
ID=13780220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8264785A Granted JPS61241118A (en) | 1985-04-19 | 1985-04-19 | Low pressure mold clamping controlling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61241118A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63116820A (en) * | 1986-11-06 | 1988-05-21 | Japan Steel Works Ltd:The | Method and apparatus for controlling mold clamping of injection molding machine |
| US5176923A (en) * | 1989-07-24 | 1993-01-05 | Ito Kogyo Kabushiki Kaisha | Mold-pressing apparatus incorporating electric servo motor and linking mechanism |
| JP2008229897A (en) * | 2007-03-16 | 2008-10-02 | Konica Minolta Opto Inc | Injection molding method and injection molding machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS533418A (en) * | 1976-06-29 | 1978-01-13 | Bergwerksverband Gmbh | Method of feeding fine coal into gasifying reactor |
| JPS5857304A (en) * | 1981-09-30 | 1983-04-05 | Shinto Paint Co Ltd | Industrial germicide composition |
| JPS58107259A (en) * | 1981-12-18 | 1983-06-25 | Toyo Kikai Kinzoku Kk | Low-pressure die clamping method in molding machine having toggle type die clamping mechanism |
-
1985
- 1985-04-19 JP JP8264785A patent/JPS61241118A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS533418A (en) * | 1976-06-29 | 1978-01-13 | Bergwerksverband Gmbh | Method of feeding fine coal into gasifying reactor |
| JPS5857304A (en) * | 1981-09-30 | 1983-04-05 | Shinto Paint Co Ltd | Industrial germicide composition |
| JPS58107259A (en) * | 1981-12-18 | 1983-06-25 | Toyo Kikai Kinzoku Kk | Low-pressure die clamping method in molding machine having toggle type die clamping mechanism |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63116820A (en) * | 1986-11-06 | 1988-05-21 | Japan Steel Works Ltd:The | Method and apparatus for controlling mold clamping of injection molding machine |
| JPH0436527B2 (en) * | 1986-11-06 | 1992-06-16 | Japan Steel Works Ltd | |
| US5176923A (en) * | 1989-07-24 | 1993-01-05 | Ito Kogyo Kabushiki Kaisha | Mold-pressing apparatus incorporating electric servo motor and linking mechanism |
| JP2008229897A (en) * | 2007-03-16 | 2008-10-02 | Konica Minolta Opto Inc | Injection molding method and injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0150566B2 (en) | 1989-10-30 |
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