JPS6455012U - - Google Patents

Info

Publication number
JPS6455012U
JPS6455012U JP15028087U JP15028087U JPS6455012U JP S6455012 U JPS6455012 U JP S6455012U JP 15028087 U JP15028087 U JP 15028087U JP 15028087 U JP15028087 U JP 15028087U JP S6455012 U JPS6455012 U JP S6455012U
Authority
JP
Japan
Prior art keywords
cylinder chamber
valve
main
ram
booster
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
JP15028087U
Other languages
Japanese (ja)
Other versions
JPH0418816Y2 (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 JP1987150280U priority Critical patent/JPH0418816Y2/ja
Publication of JPS6455012U publication Critical patent/JPS6455012U/ja
Application granted granted Critical
Publication of JPH0418816Y2 publication Critical patent/JPH0418816Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Description

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

第１図は本考案の一実施例たるブースタラム式
型締装置を示す説明図であり、第２図及び第３図
は、それぞれ、かかる型締装置の一作動形態を示
す要部説明図であり、第４図はかかる型締装置の
型閉作動時におけるブースタラムシリンダ室及び
型締シリンダ室内の油圧の時間的変化を示す説明
図（グラフ）である。また、第５図は、従来のブ
ースタラム式型締装置の一例を示す要部説明図で
ある。 ２，３０：主シリンダ、４，４４：バルブシリ
ンダ、８，５４：ブースタラム、１０：主シリン
ダ室、１２，４８：主ラム、１４，５８：ブース
タラムシリンダ室、１６：バルブシリンダ室、１
８，６０：プレフイルバルブ、２０，７８：圧縮
コイルばね、２４，６４：外部油タンク、３８：
固定盤、４２：可動盤、５０：型締シリンダ室、
５２：型開きシリンダ室、６２：供給・排出流路
、７６：第一の駆動シリンダ室、８０：第二の駆
動シリンダ室、９２：前方側端面（第一の駆動シ
リンダ室）、９３：後方側他面（第二の駆動シリ
ンダ室）、９４：電磁切換バルブ、９６：パイロ
ツト用補助ポンプ。 FIG. 1 is an explanatory diagram showing a booster ram type mold clamping device which is an embodiment of the present invention, and FIGS. 2 and 3 are explanatory diagrams of essential parts showing one mode of operation of such mold clamping device, respectively. , FIG. 4 is an explanatory diagram (graph) showing temporal changes in the oil pressure in the booster ram cylinder chamber and the mold clamping cylinder chamber during the mold closing operation of the mold clamping device. Further, FIG. 5 is an explanatory view of the main parts of an example of a conventional booster ram type mold clamping device. 2, 30: Main cylinder, 4, 44: Valve cylinder, 8, 54: Booster ram, 10: Main cylinder chamber, 12, 48: Main ram, 14, 58: Booster ram cylinder chamber, 16: Valve cylinder chamber, 1
8, 60: Pre-fill valve, 20, 78: Compression coil spring, 24, 64: External oil tank, 38:
Fixed plate, 42: Movable plate, 50: Mold clamping cylinder chamber,
52: Mold opening cylinder chamber, 62: Supply/discharge passage, 76: First drive cylinder chamber, 80: Second drive cylinder chamber, 92: Front end face (first drive cylinder chamber), 93: Rear The other side (second drive cylinder chamber), 94: Electromagnetic switching valve, 96: Pilot auxiliary pump.

Claims (1)

【実用新案登録請求の範囲】 主シリンダ室内に滑動可能に嵌合された、可動
盤を固定盤に対して接近・離隔方向に駆動する主
ラムに対して、その中心軸と同軸上に該主ラムの
直径よりも小さな直径のブースタラムを挿入せし
めて、かかる主ラム内にブースタラムシリンダ室
を形成する一方、かかる主シリンダ室内に連通す
るバルブシリンダ室を設けて、該バルブシリンダ
室内に、前記主シリンダ室内の外部油タンクに対
する連通状態を制御するプレフイルバルブを滑動
可能に嵌合せしめてなるブースタラム式型締装置
において、 前記プレフイルバルブの滑動方向両側面に対し
て、それぞれ前記主シリンダ室内の油圧が作用せ
しめられるようにする一方、前記バルブシリンダ
室内に、該プレフイルバルブを滑動方向の一の方
向に所定の付勢力をもつて付勢するばね手段を配
すると共に、その内部に導かれる圧力油によつて
、該プレフイルバルブに対して滑動方向において
互いに逆方向の駆動力を及ぼす第一の駆動シリン
ダ室及び第二の駆動シリンダ室を形成したことを
特徴とするブースタラム式型締装置。[Scope of Claim for Utility Model Registration] The main ram, which is slidably fitted in the main cylinder chamber and drives the movable platen toward and away from the stationary platen, is positioned coaxially with the central axis of the main ram. A booster ram having a diameter smaller than that of the ram is inserted to form a booster ram cylinder chamber within the main ram, while a valve cylinder chamber communicating with the main cylinder chamber is provided, and the main cylinder chamber is provided with a valve cylinder chamber communicating with the main cylinder chamber. In a booster ram type mold clamping device in which a pre-fill valve is slidably fitted to control communication with an external oil tank in a cylinder chamber, the hydraulic pressure in the main cylinder chamber is adjusted to both sides in the sliding direction of the pre-fill valve. On the other hand, a spring means is disposed in the valve cylinder chamber for biasing the pre-filled valve in one direction of the sliding direction with a predetermined biasing force, and a pressure introduced into the interior thereof is arranged. A booster ram type mold clamping device characterized in that a first drive cylinder chamber and a second drive cylinder chamber are formed by oil to apply driving forces in opposite directions to the prefill valve in the sliding direction.
JP1987150280U 1987-09-30 1987-09-30 Expired JPH0418816Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987150280U JPH0418816Y2 (en) 1987-09-30 1987-09-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987150280U JPH0418816Y2 (en) 1987-09-30 1987-09-30

Publications (2)

Publication Number Publication Date
JPS6455012U true JPS6455012U (en) 1989-04-05
JPH0418816Y2 JPH0418816Y2 (en) 1992-04-27

Family

ID=31423283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987150280U Expired JPH0418816Y2 (en) 1987-09-30 1987-09-30

Country Status (1)

Country Link
JP (1) JPH0418816Y2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280062U (en) * 1975-12-13 1977-06-15
JPS5795912U (en) * 1980-12-05 1982-06-12
JPS59201833A (en) * 1983-05-02 1984-11-15 Mitsubishi Heavy Ind Ltd Mold clamping apparatus
JPS60184618U (en) * 1984-05-10 1985-12-07 三菱重工業株式会社 Mold clamping device for injection molding machine
JPS6273918U (en) * 1985-10-30 1987-05-12

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280062U (en) * 1975-12-13 1977-06-15
JPS5795912U (en) * 1980-12-05 1982-06-12
JPS59201833A (en) * 1983-05-02 1984-11-15 Mitsubishi Heavy Ind Ltd Mold clamping apparatus
JPS60184618U (en) * 1984-05-10 1985-12-07 三菱重工業株式会社 Mold clamping device for injection molding machine
JPS6273918U (en) * 1985-10-30 1987-05-12

Also Published As

Publication number Publication date
JPH0418816Y2 (en) 1992-04-27

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