JPH0773787B2 - Molding machine clamping device - Google Patents
Molding machine clamping deviceInfo
- Publication number
- JPH0773787B2 JPH0773787B2 JP2200593A JP20059390A JPH0773787B2 JP H0773787 B2 JPH0773787 B2 JP H0773787B2 JP 2200593 A JP2200593 A JP 2200593A JP 20059390 A JP20059390 A JP 20059390A JP H0773787 B2 JPH0773787 B2 JP H0773787B2
- Authority
- JP
- Japan
- Prior art keywords
- mold clamping
- mold
- oil chamber
- circuit
- hydraulic
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は射出成形機、ダイキャストマシン、プレス成
形などの成形機に用いられる型締装置に関するものであ
る。TECHNICAL FIELD The present invention relates to a mold clamping device used in a molding machine such as an injection molding machine, a die cast machine, or a press molding machine.
［従来の技術］ 特開昭63−317243号公報により固定金型を保持する固定
盤と、可動金型を保持する可動盤と、可動盤を固定盤に
対し進退移動する型開閉シリンダと、可動盤が固定盤に
接近して型閉じ後に、可動盤側のタイバーと型締ピスト
ンとを結合して型締を行う型締シリンダを備えた大型成
形機用の型締装置が公知となっている。[Prior Art] Japanese Patent Laid-Open No. 63-317243 discloses a fixed plate for holding a fixed mold, a movable plate for holding a movable mold, a mold opening / closing cylinder for moving the movable plate forward and backward with respect to the fixed plate, and a movable plate. A mold clamping device for a large-sized molding machine is known, which includes a mold clamping cylinder that couples a tie bar on the movable platen side and a mold clamping piston to perform mold clamping after a plate approaches a fixed plate and molds are closed. .
［発明が解決しようとする課題］ このような型締装置では、大きな型締力を出力するため
に、大径の型締シリンダが用いられ、従来の直圧式の型
締装置ほどではないにしろ作動には大容量の作動油を必
要とする。[Problems to be Solved by the Invention] In such a mold clamping device, in order to output a large mold clamping force, a mold clamping cylinder having a large diameter is used, which is not as great as that of a conventional direct pressure type mold clamping device. A large amount of hydraulic oil is required for operation.
また型締シリンダに対する作動油の給排を、これまでの
ように一方の油室に作動油を供給しながら他方の油室の
作動油を油圧回路に排出するとのごとく、型締ピストン
両側の油室毎に制御していると、速やかな特性昇圧が得
られず、これを得るためには大吐出量のポンプと瞬間的
に大容量の作動油の通過が可能な大径の油圧配管及び大
定格のバルブが必要となる。In addition, as for hydraulic oil supply to and discharge from the mold clamping cylinder, the hydraulic oil in the other oil chamber is discharged to the hydraulic circuit while the hydraulic oil is supplied to one oil chamber as before. If each chamber is controlled, rapid characteristic pressure increase cannot be obtained.To achieve this, a large discharge pump and large-diameter hydraulic pipe and large-diameter hydraulic pipe that can instantaneously pass a large volume of hydraulic oil are required. A rated valve is required.
ところで大吐出量のポンプ等は本質的に応答性が鈍く、
これを補うために複数台の小容量のポンプを並列作動さ
せることも考えられるが、このようなことはシステムの
複雑化と大型化を招き、装置コストを上昇させる原因と
なるので好ましいものではない。By the way, pumps with a large discharge volume are essentially responsive,
In order to compensate for this, it is possible to operate a plurality of small-capacity pumps in parallel, but this is not preferable because it causes the system to become complicated and large and increases the device cost. .
この発明は上記従来の技術的課題を解決するために考え
られたものであって、その目的は、簡単で小定格の油圧
システムを採用しながら速やかな特性昇圧が得られる新
たな成形機の型締装置を提供することにある。The present invention has been conceived in order to solve the above-mentioned conventional technical problems, and an object thereof is to provide a mold for a new molding machine that can obtain a quick characteristic boost while adopting a simple and small-rated hydraulic system. To provide a fastening device.
上記目的によるこの発明の特徴は、ベース上に佇設した
固定盤に対し可動盤を進退自在に設け、その固定盤の所
要個所に、タイバー受孔を有する型締ピストン及び型締
ピストン側部のタイバー結合装置とを備えた複数の型締
装置を設けるとともに、上記可動盤の型締シリンダとの
対応位置に、先端部をねじ軸に形成した複数本のタイバ
ーを設け、その可動盤の移動を型開閉シリンダにより行
う型締装置において、上記型締シリンダの前部油室と後
部油室とを連通する油圧路を、ロジック弁を介してポン
プ回路に接続し、そのロジック弁と油圧路とにわたりパ
イロット回路を配設する一方、上記後部油室側の油圧路
とドレーン回路との間にロジック弁を設け、そのロジッ
ク弁とポンプ側及びドレーン回路とにわたりパイロット
回路を配設し、それらパイロット回路に切換弁を設けて
差動回路に構成してなることにある。The feature of the present invention according to the above-mentioned object is that a movable plate is provided so as to be movable back and forth with respect to a fixed plate installed on a base, and a fixed plate of a mold clamping piston having a tie bar receiving hole and a side part of the mold clamping piston is provided at a required position of the fixed plate. A plurality of mold clamping devices equipped with a tie bar coupling device are provided, and a plurality of tie bars whose tip portions are formed on screw shafts are provided at positions corresponding to the mold clamping cylinders of the movable plate to move the movable plate. In a mold clamping device performed by a mold opening / closing cylinder, a hydraulic passage that connects the front oil chamber and the rear oil chamber of the mold clamping cylinder is connected to a pump circuit via a logic valve, and the logic valve and the hydraulic passage are connected. While providing the pilot circuit, a logic valve is provided between the hydraulic circuit on the rear oil chamber side and the drain circuit, and the pilot circuit is provided between the logic valve and the pump side and the drain circuit. In it is configured to differential circuit provided with a switching valve Luo pilot circuit.
また上記型締シリンダは可動盤速に設けてもよく、その
ときにはタイバーは固定盤側に設けられる。Further, the mold clamping cylinder may be provided at the movable platen speed, in which case the tie bar is provided on the fixed platen side.
［作 用］ 上記構成では、結合装置を介して型締ピストンとタイバ
ーとが結合した後に、後部油室が型締ピストンにより加
圧されると、作動油は差動回路により前部油室に移動
し、受圧面積の差による余剰の差動油はドレーンとして
排出されて、型開閉シリンダによる型閉じ速度がスロー
ダウンする。[Operation] In the above configuration, when the rear oil chamber is pressurized by the mold clamping piston after the mold clamping piston and the tie bar are coupled via the coupling device, the hydraulic oil is transferred to the front oil chamber by the differential circuit. The excess differential oil that has moved due to the difference in the pressure receiving area is discharged as a drain, and the mold closing speed by the mold opening / closing cylinder slows down.
また前部油室が作動油により加圧されたときには、後部
油室の作動油は作動回路の閉鎖によりドレーンとして排
出され、そこに高圧型締力が生ずる。Further, when the front oil chamber is pressurized by the hydraulic oil, the hydraulic oil in the rear oil chamber is discharged as a drain by closing the operating circuit, and a high pressure mold clamping force is generated there.
さらにまた両油室に作動油を供給すると、受圧面積の差
によって型開力が発生する。Furthermore, when hydraulic oil is supplied to both oil chambers, a mold opening force is generated due to the difference in pressure receiving area.
［実施例］ 図中１はベース２の片側に佇設した固定盤、３は固定盤
１に対し移動自在にベース２上に設けた可動盤である。[Embodiment] In the figure, reference numeral 1 is a fixed board placed on one side of a base 2, and 3 is a movable board provided on the base 2 so as to be movable with respect to the fixed board 1.
４は型開閉シリンダで、固定盤側にシリンダ4aが、また
可動盤側にロッド4bが固定してある。Reference numeral 4 denotes a mold opening / closing cylinder, in which a cylinder 4a is fixed to the fixed plate side and a rod 4b is fixed to the movable plate side.
上記固定盤１の四隅部の外側には、型締シリンダ５が一
体に設けてある。この型締シリンダ５が位置する固定盤
１の面内には、内端外周に噛合調整用のねじリング６を
螺合したタイバー挿入孔を兼ねるスリーブ７が、ガイド
部材（図面では省略）により軸方向に移動自在に型締シ
リンダ５の内まで嵌挿してある。Mold clamping cylinders 5 are integrally provided outside the four corners of the fixed platen 1. In the surface of the fixed platen 1 in which the mold clamping cylinder 5 is located, a sleeve 7 also serving as a tie bar insertion hole in which a screw ring 6 for meshing adjustment is screwed to the outer circumference of the inner end is provided with a guide member (not shown in the drawing). It is inserted into the mold clamping cylinder 5 so as to be movable in any direction.
上記型締シリンダ５は、固定盤１と一体のシリンダ８
と、上記スリーブ７とともに可動盤側のタイバー９を受
け入れる孔10を軸方向に貫設した型締ピストン11と、型
締ピストン後端の型厚調整装置12と、型締ピストン側部
のタイバー９の結合装置13とを具備する。The mold clamping cylinder 5 is a cylinder 8 integrated with the fixed platen 1.
A mold clamping piston 11 having an axially extending hole 10 for receiving the tie bar 9 on the movable plate side together with the sleeve 7, a mold thickness adjusting device 12 at the rear end of the mold clamping piston, and a tie bar 9 on the side of the mold clamping piston. And the coupling device 13 of FIG.
上記型厚調整装置12は、外端を閉鎖して型締ピストン11
の後端に延設したねじ筒14と、そのねじ筒14の内側に施
したねじと螺合するとともに、ねじ筒外端からのスプラ
イン軸15と嵌合したストッパー16と、そのスプライン軸
15を回転するサーボモータ17と、外端の調整ボルト18と
から構成されている。The mold thickness adjusting device 12 has the outer end closed and the mold clamping piston 11 closed.
The screw cylinder 14 extending to the rear end of the screw cylinder, the screw 16 provided inside the screw cylinder 14, and the stopper 16 fitted to the spline shaft 15 from the outer end of the screw cylinder, and the spline shaft.
It is composed of a servomotor 17 that rotates 15 and an adjusting bolt 18 at the outer end.
また上記結合装置13は、型締ピストン11の両側部に一体
に設けられたシリンダ19と、ピストンロッド20の先端に
連結して、上記タイバー９の受孔10の内側の環状凹所21
に収納し、受孔10に臨ませたハーフナット状のチャック
22とから構成され、上記シリンダ19は型締シリンダ側の
シリンダ８に設けた長孔23により型締ピストン11ととも
に移動する。The coupling device 13 is connected to a cylinder 19 integrally provided on both sides of the mold clamping piston 11 and a tip of a piston rod 20 to form an annular recess 21 inside the receiving hole 10 of the tie bar 9.
Half-nut-shaped chuck stored in the
22 and the cylinder 19 moves together with the mold clamping piston 11 through an elongated hole 23 provided in the cylinder 8 on the mold clamping cylinder side.
上記タイバー９は、可動盤３の四隅部の上記型締シリン
ダ５と対応する位置に水平に設けられている。この各タ
イバー９の各先端部は、上記チャック22のねじと噛合す
るねじ軸24に形成され、またねじ軸24の中央には、上記
スプライン軸15の挿入孔25が穿設してある。The tie bars 9 are horizontally provided at the four corners of the movable plate 3 at positions corresponding to the mold clamping cylinders 5. Each tip of each tie bar 9 is formed on a screw shaft 24 that meshes with a screw of the chuck 22, and an insertion hole 25 for the spline shaft 15 is formed in the center of the screw shaft 24.
26はストッパー16の後退限確認リミットスイッチ、27は
ロータリーエンコーダ、28は固定金型、29は可動金型で
ある。26 is a limit switch for confirming the backward movement of the stopper 16, 27 is a rotary encoder, 28 is a fixed mold, and 29 is a movable mold.
30は上記型締シリンダ５の差動回路で、前部油室31と後
部油室32との油圧路33,34を、ロジック弁35を介してポ
ンプ回路36に接続するとともに、後部油室側を油圧路34
とドレーン回路37との間にロジック弁38を設けてなるも
ので、上記ロジック弁35は前部油室側の回路圧により開
閉作動するように、切換弁39を設けてパイロット回路40
に接続され、またロジック弁38はポンプ側の回路圧とド
レーン側の回路圧により開閉作動するように、切換弁41
を設けてパイロット回路42,43に接続してある。Reference numeral 30 denotes a differential circuit of the mold clamping cylinder 5, which connects hydraulic paths 33, 34 between the front oil chamber 31 and the rear oil chamber 32 to a pump circuit 36 via a logic valve 35 and at the rear oil chamber side. Hydraulic passage 34
A logic valve 38 is provided between the drain circuit 37 and the drain circuit 37.The logic valve 35 is provided with a switching valve 39 and a pilot circuit 40 so that the logic valve 35 is opened and closed by the circuit pressure on the front oil chamber side.
In addition, the logic valve 38 is opened and closed by the circuit pressure on the pump side and the circuit pressure on the drain side.
Is provided and connected to the pilot circuits 42 and 43.
次に型締動作について説明する。Next, the mold clamping operation will be described.
第１図に示す型開状態から、開閉シリンダ４の作動によ
り、可動盤３を固定盤１に対し前進移動して高速型閉を
行なう。From the mold open state shown in FIG. 1, the movable platen 3 is moved forward with respect to the fixed platen 1 by the operation of the opening / closing cylinder 4 to perform high-speed mold closing.
第２図に示すように、可動盤３の前進によりタイバー９
の先端部のねじ軸24は、スリーブ７から型締ピストン11
の内部に進入し、金型が完全に閉じる前に、予め金型の
厚さから位置決めされたストッパー16と接する。As shown in FIG. 2, as the movable platen 3 moves forward, the tie bar 9 is moved.
The screw shaft 24 at the tip of the
Before entering the inside of the mold and completely closing the mold, it comes into contact with a stopper 16 which is positioned in advance from the thickness of the mold.
この型閉じに際して、差動回路30の各切換弁39,41を各
ロジック弁35,38が油圧路34側の油圧により開弁するよ
うに切換えておくと、後部油室32の作動油は型締ピスト
ン11の移動に伴い前部油室31に移動し、受圧面積の差か
ら生ずる余剰の差動油はドレーンとしてタンクに排出さ
れる。When closing the mold, if the switching valves 39, 41 of the differential circuit 30 are switched so that the logic valves 35, 38 are opened by the hydraulic pressure on the hydraulic passage 34 side, the hydraulic oil in the rear oil chamber 32 is As the tightening piston 11 moves, it moves to the front oil chamber 31, and surplus differential oil generated due to the difference in pressure receiving area is discharged as a drain to the tank.
したがって、型締ピストン11は後部油室側の作動油を排
出しつつタイバー９とともに、型閉じ完了位置まで移動
するため、型閉速度は高速から低速に変わる。またスト
ッパー16との当接により、タイバー９のねじ軸24は上記
結合装置13の一対のチャック22に対し、静止の状態で臨
むことになるので、その移動中にシリンダ19を油圧作動
して、チャック22によるタイバー先端部のチャッキング
を行う。Therefore, the mold closing piston 11 moves to the mold closing completed position together with the tie bar 9 while discharging the hydraulic oil on the rear oil chamber side, so that the mold closing speed changes from high speed to low speed. Further, by contact with the stopper 16, the screw shaft 24 of the tie bar 9 faces the pair of chucks 22 of the coupling device 13 in a stationary state, so that the cylinder 19 is hydraulically operated during its movement, The chuck 22 chucks the tip portion of the tie bar.
このチャッキングがリミットスイッチなどにより感知さ
れ、また型閉じ完了が確認されると、第３図に示すよう
に、上記差動回路30の切換弁39が前部油室側の回路圧に
よりロジック弁35が閉鎖するように切換えられる。これ
により２つの油室は遮断された状態となるが、後部油室
側はタンクと流通した状態にあるので、ポンプ側回路36
からの作動油は前部油室31にのみ供給されることにな
り、そこに高圧型締が行われる。When this chucking is detected by a limit switch or the like and the completion of mold closing is confirmed, as shown in FIG. 3, the switching valve 39 of the differential circuit 30 causes the logic valve by the circuit pressure on the front oil chamber side. 35 is switched to close. As a result, the two oil chambers are cut off, but the rear oil chamber side is in communication with the tank, so the pump side circuit 36
The hydraulic oil from is supplied only to the front oil chamber 31, and high-pressure mold clamping is performed there.
次に第４図に示すように、前部油室31の圧抜きを行うと
ともにチャッキングの解除を行い、ロジック弁35を開
放、ロジック弁38を閉鎖する方向に各切換弁39,41の切
換作動が行われると、両室は再び連通し、ポンプ側回路
36から両油室に作動油が供給されるようになるが、後部
油室側の受圧面積が前部油室側よりも大きいことから、
そこに生ずる差圧により、作動油は後部油室側に供給さ
れるとともに、前部油室側の作動油は型締ピストン11に
より後部油室側に押し出される。Next, as shown in FIG. 4, the front oil chamber 31 is depressurized and the chucking is released to open the logic valve 35 and close the logic valve 38. Once actuated, both chambers are in communication again and the pump side circuit
From 36, hydraulic oil is supplied to both oil chambers, but since the pressure receiving area on the rear oil chamber side is larger than on the front oil chamber side,
Due to the differential pressure generated there, the hydraulic oil is supplied to the rear oil chamber side, and the hydraulic oil on the front oil chamber side is pushed out to the rear oil chamber side by the mold clamping piston 11.
この結果、前部油室側の油圧抵抗が速やかに除かれると
同時に、後部油室32への作動油の供給も円滑に行われ
て、そこに強力型開が行われる。その際、可動盤３には
ストッパー16を介して強力型締力が伝達される。そして
強力型締工程が終了した後、前部油室31及び後部油室32
への圧油の供給を止め、型開閉シリンダ４へ圧油の供給
することにより、型開閉シリンダ４による型開となる。
また差動回路30では後部油室側の切換弁41が切換わって
ロジック弁38を開弁状態となす。As a result, the hydraulic resistance on the front oil chamber side is quickly removed, and at the same time, the hydraulic oil is smoothly supplied to the rear oil chamber 32, and the strong mold opening is performed there. At that time, a strong mold clamping force is transmitted to the movable platen 3 via the stopper 16. After the strong mold clamping process is completed, the front oil chamber 31 and the rear oil chamber 32 are
By stopping the supply of the pressure oil to the mold opening / closing cylinder 4 and supplying the pressure oil to the mold opening / closing cylinder 4, the mold opening / closing cylinder 4 is opened.
In the differential circuit 30, the switching valve 41 on the rear oil chamber side is switched to open the logic valve 38.
なお、上記型開閉シリンダ４の型開回路を、上記差動回
路と同様に構成することもでき、その時には全体の効率
が一段と向上し、サイクル時間も更に一層短縮される。The mold opening circuit of the mold opening / closing cylinder 4 can be configured in the same manner as the differential circuit, at which time the overall efficiency is further improved and the cycle time is further shortened.
［発明の効果］ この発明は上述のように、タイバー収容孔を有する型締
ピストン及び型締ピストン側部のタイバー結合装置とを
備えた型締シリンダの前部油室と後部油室とを連通する
油圧路を、ロジック弁を介してポンプ回路に接続し、そ
のロジック弁と油圧路とにわたりパイロット回路を配設
する一方、上記後部油室側の油圧路とドレーン回路との
間にロジック弁を設け、そのロジック弁とポンプ側及び
ドレーン回路とにわたりパイロット回路を配設し、それ
らパイロット回路に切換弁を設けて差動回路に構成して
なることことから、強力型締時を除く型締ピストンの移
動時に、は、被加圧側の油室から排出された作動油が、
差動回路を経て加圧側の油室に供給されることになるの
で、強力型開時の加圧側油室への作動油の供給は、両油
室間の容積差分の少容量で済み、作動油の給排も速やか
に生ずるので、油室毎の給排を行う場合に比べて特性昇
圧が向上する。また油圧システムも小定格のもので足
り、システムの構成も簡単であるので、コンパクトにそ
して廉価となすことができるなどの特長を有する。[Effects of the Invention] As described above, the present invention communicates the front oil chamber and the rear oil chamber of the mold clamping cylinder provided with the mold clamping piston having the tie bar accommodation hole and the tie bar coupling device on the side of the mold clamping piston. The hydraulic circuit to be connected to the pump circuit via the logic valve, and the pilot circuit is arranged over the logic valve and the hydraulic path, while the logic valve is connected between the hydraulic path on the rear oil chamber side and the drain circuit. Since a pilot circuit is provided between the logic valve and the pump side and drain circuit, and a switching valve is provided in these pilot circuits to form a differential circuit, the mold clamping piston except when strong mold clamping is performed. When moving the, the operating oil discharged from the pressurized oil chamber is
Since it is supplied to the oil chamber on the pressure side via the differential circuit, the hydraulic oil can be supplied to the oil chamber on the pressure side when the strong mold is opened with a small volume difference between the two oil chambers. Since the oil supply / discharge is promptly generated, the characteristic boosting is improved as compared with the case of supplying / discharging each oil chamber. In addition, the hydraulic system only needs to have a small rating and the system configuration is simple, so it has the features of being compact and inexpensive.
図面はこの発明に係わる成形機の型締装置の１例を示す
もので、第１図は型締シリンダ部分を縦断して示す側面
図、第２図から第４図は型締シリンダ部分の縦断側面図
で、第２図はチャッキング状態説明図、第３図は高圧型
締状態説明図、第４図は強力型開状態説明図である。 １……固定盤、２……ベース ３……可動盤 ４……型開閉シリンダ、５……型締シリンダ 10……タイバーの受孔、11……型締ピストン 12……型厚調整装置、13……結合装置 16……ストッパー、22……チャック 24……ねじ軸、30……差動回路 31……前部油室、32……後部油室 33……前部油室側の油圧路 34……後部油室側の油圧路 35,38……ロジック弁 36……ポンプ側の油圧路 37……ドレーン側油圧路 39.41……切換弁 40,42,43……パイロット油圧路 Ｐ……油圧ポンプThe drawings show an example of a mold clamping device of a molding machine according to the present invention. FIG. 1 is a side view showing a mold clamping cylinder part in a vertical section, and FIGS. 2 to 4 are vertical sectional views of a mold clamping cylinder part. 2 is a side view, FIG. 2 is an explanatory view of a chucking state, FIG. 3 is an explanatory view of a high pressure mold clamping state, and FIG. 4 is an explanatory view of a strong mold opening state. 1 …… Fixed board, 2 …… Base 3 …… Movable board 4 …… Mold opening / closing cylinder, 5 …… Mold clamping cylinder 10 …… Tie bar receiving hole, 11 …… Mold clamping piston 12 …… Mold thickness adjusting device, 13 …… Coupling device 16 …… Stopper, 22 …… Chuck 24 …… Screw shaft, 30 …… Differential circuit 31 …… Front oil chamber, 32 …… Rear oil chamber 33 …… Hydraulic pressure on front oil chamber side Line 34 …… Rear hydraulic chamber side hydraulic line 35, 38 …… Logic valve 36 …… Pump side hydraulic line 37 …… Drain side hydraulic line 39.41 …… Switching valve 40, 42, 43 …… Pilot hydraulic line P… …Hydraulic pump
Claims (2)
進退自在に設け、その固定盤の所要個所に、タイバー受
孔を有する型締ピストン及び型締ピストン側のタイバー
結合装置とを備えた複数の型締シリンダを設けるととも
に、上記可動盤の型締シリンダとの対応位置に、先端部
をねじ軸に形成した複数本のタイバーを設け、その可動
盤の移動を型開閉シリンダにより行う型締装置におい
て、 上記型締シリンダの前部油室31と後部油室32とを連通す
る油圧路33,34を、ロジック弁35を介してポンプ回路36
に接続し、そのロジック弁35と油圧路33とにわたりパイ
ロット回路40を配設する一方、上記後部油室側の油圧路
34とドレーン回路37との間にロジック弁38を設け、その
ロジック弁38とポンプ側及びドレーン回路37とにわたり
パイロット回路42,43を配設し、それらパイロット回路4
0,42,43に切換弁39,41を設けて差動回路30に構成してな
ることを特徴とする成形機の型締装置。1. A movable plate is provided so as to be movable back and forth with respect to a fixed plate installed on a base, and a mold clamping piston having a tie bar receiving hole and a tie bar coupling device on the mold clamping piston side are provided at required positions of the fixed plate. A plurality of mold clamping cylinders are provided, and a plurality of tie bars whose tip is formed on a screw shaft is provided at a position corresponding to the mold clamping cylinder of the movable plate, and the movable platen is moved by a mold opening / closing cylinder. In the mold clamping device, the hydraulic circuits 33 and 34 that connect the front oil chamber 31 and the rear oil chamber 32 of the mold clamping cylinder are connected to the pump circuit 36 via the logic valve 35.
And a pilot circuit 40 is arranged across the logic valve 35 and the hydraulic passage 33, while the hydraulic passage on the rear oil chamber side is connected.
A logic valve 38 is provided between the drain circuit 37 and the drain circuit 37, and pilot circuits 42 and 43 are arranged between the logic valve 38 and the pump side and the drain circuit 37.
A mold clamping device for a molding machine, characterized in that switching valves 39, 41 are provided on 0, 42, 43 to constitute a differential circuit 30.
て、型締シリンダを可動盤側に、タイバーを固定盤側に
設けてなることを特徴とする成形機の型締装置。2. The mold clamping device for a molding machine according to claim 1, wherein the mold clamping cylinder is provided on the movable platen side and the tie bar is provided on the fixed platen side.
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2200593A JPH0773787B2 (en) | 1990-07-27 | 1990-07-27 | Molding machine clamping device |
| US07/731,849 US5192557A (en) | 1990-07-27 | 1991-07-17 | Clamping apparatus for molding machine |
| CA002047607A CA2047607C (en) | 1990-07-27 | 1991-07-23 | Clamping apparatus for molding machine |
| AT0148591A AT400125B (en) | 1990-07-27 | 1991-07-24 | MOLDING UNIT |
| GB9116010A GB2247207B (en) | 1990-07-27 | 1991-07-24 | Apparatus for use with molding machines |
| ITRM910566A IT1251452B (en) | 1990-07-27 | 1991-07-26 | LOCKING DEVICE FOR A MOLDING MACHINE |
| CN91105152A CN1034159C (en) | 1990-07-27 | 1991-07-26 | Clamping apparatus for molding machine |
| DE4124893A DE4124893C2 (en) | 1990-07-27 | 1991-07-26 | Clamping and clamping device for molding machine |
| KR1019910012863A KR100200977B1 (en) | 1990-07-27 | 1991-07-26 | Clamping apparatus for molding machine |
| FR9109546A FR2665105B1 (en) | 1990-07-27 | 1991-07-26 | TIGHTENING APPARATUS FOR MOLDING MACHINE AND SECURITY DEVICE FOR THIS APPARATUS. |
| US07/814,178 US5188850A (en) | 1990-07-27 | 1991-12-30 | Clamping apparatus for molding machine |
| US07/989,535 US5320517A (en) | 1990-07-27 | 1992-12-11 | Clamping apparatus for molding machine |
| US07/989,584 US5277568A (en) | 1990-07-27 | 1992-12-11 | Clamping apparatus for molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2200593A JPH0773787B2 (en) | 1990-07-27 | 1990-07-27 | Molding machine clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0484655A JPH0484655A (en) | 1992-03-17 |
| JPH0773787B2 true JPH0773787B2 (en) | 1995-08-09 |
Family
ID=16426933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2200593A Expired - Fee Related JPH0773787B2 (en) | 1990-07-27 | 1990-07-27 | Molding machine clamping device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0773787B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT521382B1 (en) | 2018-11-14 | 2020-01-15 | Engel Austria Gmbh | Closing unit for a molding machine |
| CN112895354A (en) * | 2021-01-15 | 2021-06-04 | 刘德爱 | Injection molding machine for injection molding |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6323013U (en) * | 1986-07-29 | 1988-02-16 | ||
| JPH0771729B2 (en) * | 1986-11-18 | 1995-08-02 | 東洋機械金属株式会社 | Direct pressure type mold clamping device |
| JPH0773785B2 (en) * | 1987-06-22 | 1995-08-09 | 三菱重工業株式会社 | Mold clamping device |
| JPH0773786B2 (en) * | 1987-06-24 | 1995-08-09 | 三菱重工業株式会社 | Mold clamping device |
| JPH01221208A (en) * | 1988-03-01 | 1989-09-04 | Jiyuken Plast Mach Works:Kk | Mold-clamping device |
-
1990
- 1990-07-27 JP JP2200593A patent/JPH0773787B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0484655A (en) | 1992-03-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
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| LAPS | Cancellation because of no payment of annual fees |