JPS62149410A - Mold clamping device - Google Patents
Mold clamping deviceInfo
- Publication number
- JPS62149410A JPS62149410A JP29156885A JP29156885A JPS62149410A JP S62149410 A JPS62149410 A JP S62149410A JP 29156885 A JP29156885 A JP 29156885A JP 29156885 A JP29156885 A JP 29156885A JP S62149410 A JPS62149410 A JP S62149410A
- Authority
- JP
- Japan
- Prior art keywords
- toggle
- mold
- movable platen
- mold clamping
- cylinder
- 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
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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/68—Mould opening, closing or clamping devices hydro-mechanical
- B29C45/681—Mould opening, closing or clamping devices hydro-mechanical using a toggle mechanism as mould clamping device
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Moulds For Moulding 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、射出成形機等で使用するダブルトグル式型締
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a double toggle type mold clamping device used in an injection molding machine or the like.
（従来の技術）
従来、射出成形機のダブルトグル式型締装置では、第４
図に示す如く、可動プラテン４とトグルサポート１との
間に２組のトグル機構１６を設けると共に、トグルサポ
ート１に油圧シリンダ５１を装着し、該シリンダ５１の
ピストンロッド先端をクロスヘッド６に装着し、該クロ
スヘッド６を介して前記トグル機構１６を作動させ、可
動プラテン４をタイバー２に清って、固定プラテン３に
対して前後進させて型開閉、型締動作を行なうようにな
っている。このダブルトグル式型締装置は、直圧式型締
装置に比べて、トグル機構の力拡大メカニズムを利用し
て油圧／リンダ５′の動きを増速し少ないシリンダスト
ロークで型開閉動作を迅速に、特に途中を高速で行なえ
ると共に、一定の型締力を保持して型締時のロックを機
械的に強固に行なえるという利点がある。(Prior art) Conventionally, in the double toggle type mold clamping device of an injection molding machine, the fourth
As shown in the figure, two sets of toggle mechanisms 16 are provided between the movable platen 4 and the toggle support 1, a hydraulic cylinder 51 is attached to the toggle support 1, and the piston rod tip of the cylinder 51 is attached to the crosshead 6. Then, the toggle mechanism 16 is actuated via the crosshead 6, and the movable platen 4 is moved forward and backward relative to the fixed platen 3 using the tie bar 2 to perform mold opening/closing and mold clamping operations. There is. Compared to direct pressure type mold clamping devices, this double toggle type mold clamping device uses a force amplifying mechanism of a toggle mechanism to speed up the movement of the hydraulic pressure/cylinder 5' and quickly open and close the mold with less cylinder stroke. Particularly, there are advantages in that the middle part can be performed at high speed, and a constant mold clamping force can be maintained to mechanically firmly lock the mold during clamping.
（発明が解決しようとする問題点）
しかし、型開閉、型締動作用の油圧シリンダ５′はトグ
ルサポー）ｌに設けられて後方１（大きく突出している
ため、型締装置の全長は直圧式に比較して長くなり、射
出成形機の据付スペースの点で直圧式に比べて不利であ
るとＡう不都合がある。(Problem to be solved by the invention) However, since the hydraulic cylinder 5' for mold opening/closing and mold clamping operations is installed on the toggle support (1) and protrudes greatly from the rear (1), the entire length of the mold clamping device is limited to the direct pressure type. Compared to the direct pressure type, the injection molding machine is longer and has a disadvantage in terms of installation space for the injection molding machine.
本発明は前記従来のダブルトグル式型締装置の問題点を
解決するためになされたもので、装置の全長を大幅に短
縮することを目的とする。The present invention was made to solve the problems of the conventional double toggle type mold clamping device, and aims to significantly shorten the overall length of the device.
（問題点を解決するための手段）
本発明の型締装置は、可動プラテンとトグルサポートと
の間に２組のトグル機構を設け、該機構の作動により可
動プラテンを固定プラテンに対して前進させて型締動作
を行なうダブルトグル式型締装置において、型締シリン
ダを可動プラテンに装着し、該シリンダのピストンロッ
ド先端を、前記トグル機構を作動させるクロスヘッドに
連結すると共に、型開閉シリンダを可動プラテンとトグ
ルサポートとの間に装架したことを特徴としている。(Means for Solving the Problems) The mold clamping device of the present invention includes two sets of toggle mechanisms between the movable platen and the toggle support, and the movable platen is advanced relative to the fixed platen by the operation of the mechanisms. In a double toggle type mold clamping device that performs mold clamping operation, a mold clamping cylinder is mounted on a movable platen, the piston rod tip of the cylinder is connected to a crosshead that operates the toggle mechanism, and the mold opening/closing cylinder is movable. It is characterized by being mounted between the platen and the toggle support.
（実施例）
以下、本発明の一実施例を第１図〜第３図に浴い説明す
る。(Example) An example of the present invention will be described below with reference to FIGS. 1 to 3.
図中１はトグルサポートで、タイバー２（図面で一部を
省略）により固定プラテン３に連結されている。In the figure, reference numeral 1 denotes a toggle support, which is connected to a fixed platen 3 by tie bars 2 (partially omitted in the figure).
４は可動プラテンで、前記トグルサポートｌと固定プラ
テン３との間に設けられ、タイバー２に摺動可能に貫挿
されている。A movable platen 4 is provided between the toggle support l and the fixed platen 3, and is slidably inserted through the tie bar 2.
５は型締シリンダで、可動プラテン４のトグルサポート
１に対向する対向面の中央部に装着されており、該シリ
ンダ５のピストンロット先端はクロスヘッド６に装着さ
れると共に１．シリンダ５の内部には図示しない型閉ク
ッションが設けられている。Reference numeral 5 denotes a mold clamping cylinder, which is attached to the center of the opposing surface of the movable platen 4 facing the toggle support 1. The piston rod end of the cylinder 5 is attached to the crosshead 6, and the cylinder 5 is attached to the crosshead 6. A mold closing cushion (not shown) is provided inside the cylinder 5.
７は型開閉シリンダで、クロスヘッド６を挾んで対称に
、一端をトグルサポート１に、他端を可動プラテン４に
夫々固定されている。A mold opening/closing cylinder 7 is fixed symmetrically with the crosshead 6 in between, with one end fixed to the toggle support 1 and the other end fixed to the movable platen 4.
８．９はトグルリンクで、該リンク８，９の一端はピン
１０により互に枢支され、該リンク８．９の他端は一方
がトグルサポート１に、他方が可動プラテン４に夫々ブ
ラケット１１を介してピン１２により枢着されている。Reference numeral 8.9 denotes a toggle link, one end of which is pivoted to each other by a pin 10, and the other end of the link 8.9 is attached to a bracket 11, with one end attached to the toggle support 1 and the other attached to the movable platen 4. It is pivotally connected by a pin 12 via.
１３はトグルレバーで、該レバー１３の一端は前記トグ
ルリンク８，９のいずれか一方或は両者の連結部（実施
例ではトグルレバー８側）にビ／１４により連結され、
他端はピンク、５を介してクロスヘッド６に連結されて
いる。このようにトグルリンク８，９及びトグルレバー
１３により構成されたトグル機構１６は、型−開閉シリ
ンダフによりトグルリンク８，９が略直線位置になるよ
う型閉じされるが、型閉じ完了間際に型締シリンダ５を
作動してトグルリンク８，９を更に伸ばし可動プラテン
４を固定プラテン３側に強力に前進させ押圧して型締す
イ）。13 is a toggle lever, and one end of the lever 13 is connected to one or both of the toggle links 8 and 9 (toggle lever 8 side in the embodiment) by a bi/14,
The other end is connected to the crosshead 6 via the pink pin 5. In this way, the toggle mechanism 16 constituted by the toggle links 8, 9 and the toggle lever 13 closes the mold so that the toggle links 8, 9 are in a substantially straight position by the mold-opening/closing cylinder ff. The clamping cylinder 5 is operated to further extend the toggle links 8 and 9, and the movable platen 4 is forcefully advanced and pressed toward the fixed platen 3 to clamp the mold (a).
１７は型開眼位置設定用のネジ調整式ストッパーで、型
締シリンダ５先端のクロスヘッド６と当接可能にトグル
レバートコ、に設けられている０
１８．１９は金型で、それぞれ固定プラテン３と可動プ
ラテン４の対向面ｉｌ′ｉ：夫々装着されている。17 is a screw-adjustable stopper for setting the opening position of the mold, and is provided on a toggle lever lever so that it can come into contact with the crosshead 6 at the tip of the mold clamping cylinder 5.0, 18, and 19 are molds, each of which is attached to the fixed platen 3. and the opposing surface il'i of the movable platen 4: are mounted, respectively.
（作用）
次に、高速型閉じ一低速型締め一高速型開きの１サイク
ルの型締動作を説明する。(Function) Next, the mold clamping operation of one cycle of high-speed mold closing, low-speed mold clamping, and high-speed mold opening will be explained.
尚、第１図、第２図はトグルサポートを基準として下半
分に型閉じ開始前の状態を、上半分に型閉じ完了の状態
を示す。牙３図は可動プラテンを基準として下半分に型
閉じ開始前の状態を、上半分に型閉じ完了の状態を示す
。In addition, in FIGS. 1 and 2, the lower half shows the state before mold closing starts, and the upper half shows the state after mold closing is completed, with the toggle support as a reference. In Figure 3, the lower half shows the state before mold closing starts, and the upper half shows the state when mold closing is completed, with the movable platen as a reference.
型開閉シリンダ７０ロッド引込み作動によって、可動プ
ラテン４は、牙１図、第２図の下半分に示す位置から高
速で前進させられ、金型１８．１９の型閉じ又はその寸
前で停止される（高速型締工程）。この場合、型締シリ
ンダ５の反ロンド側から油がタンク側に逸流するため、
トグル機構１６が働かず、型開閉シリンダ７による高速
型閉じは小さい力でスムーズに行なわれる０
型開閉シリンダマが停止すると、型締シリンダ５のロッ
ド引込み作動が行なわれ、これによるトグル機構１６の
作動によって、可動プラテン４はさらに前進させられ、
金型ｌＢ、１９が強く締め付けられると共に、トグル機
構ユ６のトグルリンク８，９が一直線上にきて、型締め
反力はトグル機構１６を介してトグルサポート１に支持
される（低速型締工程）。By retracting the mold opening/closing cylinder 70 rod, the movable platen 4 is advanced at high speed from the position shown in the lower half of FIGS. high-speed mold clamping process). In this case, oil leaks from the anti-rond side of the mold clamping cylinder 5 to the tank side.
The toggle mechanism 16 does not work, and the mold opening/closing cylinder 7 smoothly closes the mold at high speed with a small force. The movable platen 4 is further advanced by
The molds IB and 19 are strongly tightened, and the toggle links 8 and 9 of the toggle mechanism unit 6 are aligned, and the mold clamping reaction force is supported by the toggle support 1 via the toggle mechanism 16 (low speed mold clamping). process).
かかる状態で金型１Ｂ 、１９内のキャビティに溶融樹
脂が射出充填され（射出工程）、次いで保圧・冷却の工
程が行なわれる。In this state, the cavities in the molds 1B and 19 are injected and filled with molten resin (injection step), and then pressure holding and cooling steps are performed.
次いで、型締シリンダ５のロンド押出し作動によってト
グル機構１６のトグルリンク８．９が一直線上の位置か
らずれて、該機構１６による型締めロックが外れた後、
型開閉シリンダ７のロッド引込み作動によって、可動プ
ラテン４は前記とは逆に元の位置まで高速で後退させら
れる（高速型開き工程）。Next, the toggle links 8.9 of the toggle mechanism 16 are deviated from the straight position due to the Rondo extrusion operation of the mold clamping cylinder 5, and after the mold clamping lock by the mechanism 16 is released,
By retracting the rod of the mold opening/closing cylinder 7, the movable platen 4 is retreated at high speed to its original position (high-speed mold opening process), contrary to the above.
ところで、第３図に示す如く、型閉じ一型締め一型開き
の過程においては、型締シリンダ５先端のクロスヘッド
６と、該シリンダ５を支える可動プラテン４との相対位
置はほとんど変化がなく、型締動作時にのみ変化するが
、その変化量は小さいため、型締シリンダ５を、可動プ
ラテン↓側からクロスヘッド６を引く形で、型開閉シリ
ンダ７により前進させられた可動プラテン４をさらに型
締方向に押す時にのみ作動させれば型締動作ができるの
で型締シリンダストロークは短かくて良いから実質的に
小型のシリンダで済むのである。By the way, as shown in FIG. 3, during the process of mold closing, mold clamping, and mold opening, the relative position between the crosshead 6 at the tip of the mold clamping cylinder 5 and the movable platen 4 that supports the cylinder 5 hardly changes. , changes only during the mold clamping operation, but since the amount of change is small, the mold clamping cylinder 5 is pulled from the movable platen ↓ side by the crosshead 6, and the movable platen 4, which has been advanced by the mold opening/closing cylinder 7, is further moved. Since the mold clamping operation can be performed by operating only when pushing in the mold clamping direction, the mold clamping cylinder stroke only needs to be short, so that a substantially small cylinder can be used.
（発明の効果）
以上の通り本発明は、型開閉シリンダと型締シリンダを
トグルサポートと可動プラテンとの間に配したために、
従来のダブルトグル式型締装置に比べてその型締シリン
ダの長さ程度、装置長さを短縮することができると共に
、トグル式の利点である型締時の強固なロック機能を充
分に発揮させることができる。(Effects of the Invention) As described above, the present invention has a mold opening/closing cylinder and a mold clamping cylinder arranged between the toggle support and the movable platen.
Compared to the conventional double toggle type mold clamping device, the length of the mold clamping cylinder and device length can be shortened, and the strong locking function during mold clamping, which is an advantage of the toggle type, can be fully utilized. be able to.
第１図、第２図、第３図は本発明の一実施例を示す概略
的な平面図で、下半分に型閉じ開始前の状態を、上半分
に型閉じ完了の状態を示す。
第４図は従来例を示す概略的な平面図で、下半分に型閉
じ開始前の状態を、上半分に型閉じ完了の状態を示す。
１・・・トグルサポート、２・・・タイバー、３・・・
固定プラテン、４・・・可動プラテン、５・・・型締シ
リンダ、６・・・クロスヘッド、７・・・型開閉シリン
ダ、８．９・・・トグルリンク、１３−・・トグルレバ
ー、１６・・・トグル機構、１フ・・・ストッパー、１
Ｂ。
１９・・・金型。FIGS. 1, 2, and 3 are schematic plan views showing one embodiment of the present invention, with the lower half showing the state before mold closing starts, and the upper half showing the state after mold closing is completed. FIG. 4 is a schematic plan view showing a conventional example, with the lower half showing the state before mold closing starts, and the upper half showing the state after mold closing is completed. 1... Toggle support, 2... Tie bar, 3...
Fixed platen, 4... Movable platen, 5... Mold clamping cylinder, 6... Cross head, 7... Mold opening/closing cylinder, 8.9... Toggle link, 13-... Toggle lever, 16 ...Toggle mechanism, 1 foot...Stopper, 1
B. 19...Mold.
Claims (1)
構を設け、該機構の作動により可動プラテンを固定プラ
テンに対して前進させて型締動作を行なうダブルトグル
式型締装置において、型締シリンダを可動プラテンに装
着し、該シリンダのピストンロッド先端を、前記トグル
機構を作動させるクロスヘッドに連結すると共に、型開
閉シリンダを可動プラテンとトグルサポートとの間に装
架したことを特徴とする型締装置。In a double toggle type mold clamping device, two sets of toggle mechanisms are provided between a movable platen and a toggle support, and the movable platen is advanced relative to a fixed platen by the operation of the mechanisms to perform a mold clamping operation. A mold clamping device that is attached to a movable platen, the piston rod tip of the cylinder is connected to a crosshead that operates the toggle mechanism, and a mold opening/closing cylinder is mounted between the movable platen and the toggle support. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29156885A JPS62149410A (en) | 1985-12-24 | 1985-12-24 | Mold clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29156885A JPS62149410A (en) | 1985-12-24 | 1985-12-24 | Mold clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62149410A true JPS62149410A (en) | 1987-07-03 |
Family
ID=17770604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29156885A Pending JPS62149410A (en) | 1985-12-24 | 1985-12-24 | Mold clamping device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62149410A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997000162A1 (en) * | 1995-06-14 | 1997-01-03 | Fanuc Ltd | Mold clamping mechanism for an injection molding machine |
| AT414224B (en) * | 2002-07-19 | 2006-10-15 | Engel Austria Gmbh | Two plate injection molding machine with fixed and moveable platens useful for hydraulic systems of injection molding machines ensures favourable transfer ratio between clamping and driving forces of toggle lever systems |
| WO2012090734A1 (en) * | 2010-12-28 | 2012-07-05 | 宇部興産機械株式会社 | Die clamping device and molded product extrusion method |
-
1985
- 1985-12-24 JP JP29156885A patent/JPS62149410A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997000162A1 (en) * | 1995-06-14 | 1997-01-03 | Fanuc Ltd | Mold clamping mechanism for an injection molding machine |
| US5843496A (en) * | 1995-06-14 | 1998-12-01 | Fanuc Ltd. | Mold clamping mechanism of an injection molding machine |
| AT414224B (en) * | 2002-07-19 | 2006-10-15 | Engel Austria Gmbh | Two plate injection molding machine with fixed and moveable platens useful for hydraulic systems of injection molding machines ensures favourable transfer ratio between clamping and driving forces of toggle lever systems |
| WO2012090734A1 (en) * | 2010-12-28 | 2012-07-05 | 宇部興産機械株式会社 | Die clamping device and molded product extrusion method |
| JP5803939B2 (en) * | 2010-12-28 | 2015-11-04 | 宇部興産機械株式会社 | Clamping apparatus and molded product extrusion method |
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