JPH01127823U - - Google Patents

Info

Publication number
JPH01127823U
JPH01127823U JP2248988U JP2248988U JPH01127823U JP H01127823 U JPH01127823 U JP H01127823U JP 2248988 U JP2248988 U JP 2248988U JP 2248988 U JP2248988 U JP 2248988U JP H01127823 U JPH01127823 U JP H01127823U
Authority
JP
Japan
Prior art keywords
chamber
mold
booster ram
hydraulic oil
mold opening
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
Application number
JP2248988U
Other languages
Japanese (ja)
Other versions
JPH0528027Y2 (en
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 filed Critical
Priority to JP1988022489U priority Critical patent/JPH0528027Y2/ja
Publication of JPH01127823U publication Critical patent/JPH01127823U/ja
Application granted granted Critical
Publication of JPH0528027Y2 publication Critical patent/JPH0528027Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

添付図は、本考案に従うブースタラム式型締装
置の一例を説明するための系統図である。 １０：可動盤、１２，１４：金型、１６：固定
盤、１８：主ラム、２０：主シリンダ、２２：型
締室、２４：型開室、２８：ブースタラム、３０
：ブースタラムシリンダ室、３４，５２，５４：
パイロツト操作開閉弁、３６：可変吐出量ポンプ
（ポンプ手段）、３８，４４，６６：電磁切換弁
、５６：パイロツト操作逆止弁、５８：可変絞り
弁、６０：油通路、６２：逆止弁（逆止弁手段）
、６４：シヤトル弁。 The attached drawing is a system diagram for explaining an example of a booster ram type mold clamping device according to the present invention. 10: Movable plate, 12, 14: Mold, 16: Fixed plate, 18: Main ram, 20: Main cylinder, 22: Mold clamping chamber, 24: Mold opening chamber, 28: Booster ram, 30
: Booster ram cylinder chamber, 34, 52, 54:
Pilot operated on/off valve, 36: Variable discharge amount pump (pump means), 38, 44, 66: Solenoid switching valve, 56: Pilot operated check valve, 58: Variable throttle valve, 60: Oil passage, 62: Check valve (Check valve means)
, 64: Shuttle valve.

Claims (1)

【実用新案登録請求の範囲】 主シリンダ室を型締室と型開室とに仕切るよう
に該主シリンダ室に滑動可能に嵌合された、固定
盤に対して可動盤を接近・離隔移動させるための
主ラムに、ブースタラムを通じて作動油が給排せ
しめられるブースタラムシリンダ室を形成すると
共に、吐出量可変のポンプ手段を設けて、該ポン
プ手段にて該ブースタラムシリンダ室、前記型締
室および前記型開室に作動油を供給せしめること
により、前記固定盤と可動盤との間で金型の型閉
操作、型締操作および型開操作を行ない得るよう
にしたブースタラム式型締装置において、 前記主シリンダの型開室から排出される作動油
をタンクに直接環流させる第一の環流回路を設け
ると共に、該作動油を所定の絞りを通じてタンク
に環流させる第二の環流回路を設ける一方、前記
ブースタラムシリンダ室への作動油の供給下にお
ける前記ポンプ手段の吐出量の大吐出量から小吐
出量への切換えに伴つて、該型開室から排出され
る作動油の排出回路を該第一の環流回路から該第
二の環流回路に切り換える排出回路切換手段を設
け、且つ該型開室と前記ブースタラムシリンダ室
との間に、該型開室側から該ブースタラムシリン
ダ室側にのみ作動油が流れ得るようにした逆止弁
手段を設けて、前記排出回路切換手段による前記
第一の環流回路から前記第二の環流回路への切換
作動に応じて、前記型開室から排出された作動油
の一部が前記ブースタラムを通じて前記ブースタ
ラムシリンダ室に導入せしめられるようにしたこ
とを特徴とするブースタラム式型締装置。[Scope of claim for utility model registration] A movable platen is moved toward and away from a fixed platen that is slidably fitted into the main cylinder chamber so as to partition the main cylinder chamber into a mold clamping chamber and a mold opening chamber. A booster ram cylinder chamber is formed in the main ram for supplying and discharging hydraulic oil through the booster ram, and a pump means with a variable discharge amount is provided, and the pump means pumps the booster ram cylinder chamber, the mold clamping chamber, and the mold clamping chamber. In the booster ram type mold clamping device, the mold closing operation, mold clamping operation, and mold opening operation of the mold can be performed between the fixed platen and the movable platen by supplying hydraulic oil to the mold opening chamber, A first circulation circuit is provided for directly circulating the hydraulic oil discharged from the mold opening chamber of the main cylinder into the tank, and a second circulation circuit is provided for circulating the hydraulic oil into the tank through a predetermined restriction. When the discharge amount of the pump means is switched from a large discharge amount to a small discharge amount while hydraulic oil is being supplied to the booster ram cylinder chamber, a discharge circuit for the hydraulic oil discharged from the mold opening chamber is connected to the first pump means. A discharge circuit switching means for switching from the circulation circuit to the second circulation circuit is provided, and between the mold opening chamber and the booster ram cylinder chamber, the discharge circuit switching means operates only from the mold opening chamber side to the booster ram cylinder chamber side. A check valve means is provided to allow oil to flow, and the oil is discharged from the mold opening chamber in response to switching operation of the discharge circuit switching means from the first circulation circuit to the second circulation circuit. A booster ram type mold clamping device, characterized in that a part of hydraulic oil is introduced into the booster ram cylinder chamber through the booster ram.
JP1988022489U 1988-02-23 1988-02-23 Expired - Lifetime JPH0528027Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988022489U JPH0528027Y2 (en) 1988-02-23 1988-02-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988022489U JPH0528027Y2 (en) 1988-02-23 1988-02-23

Publications (2)

Publication Number Publication Date
JPH01127823U true JPH01127823U (en) 1989-08-31
JPH0528027Y2 JPH0528027Y2 (en) 1993-07-19

Family

ID=31240657

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988022489U Expired - Lifetime JPH0528027Y2 (en) 1988-02-23 1988-02-23

Country Status (1)

Country Link
JP (1) JPH0528027Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0529725U (en) * 1991-09-30 1993-04-20 株式会社名機製作所 Mold opening and closing circuit of injection molding machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5417325A (en) * 1977-07-08 1979-02-08 Yoshino Kogyosho Co Ltd Direct pressure type mold clamping apparatus
JPS56126140A (en) * 1980-03-07 1981-10-02 Nissei Plastics Ind Co Hydraulic mold clamping device for molding machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5417325A (en) * 1977-07-08 1979-02-08 Yoshino Kogyosho Co Ltd Direct pressure type mold clamping apparatus
JPS56126140A (en) * 1980-03-07 1981-10-02 Nissei Plastics Ind Co Hydraulic mold clamping device for molding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0529725U (en) * 1991-09-30 1993-04-20 株式会社名機製作所 Mold opening and closing circuit of injection molding machine

Also Published As

Publication number Publication date
JPH0528027Y2 (en) 1993-07-19

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