JPH01128001U - - Google Patents

Info

Publication number
JPH01128001U
JPH01128001U JP2359288U JP2359288U JPH01128001U JP H01128001 U JPH01128001 U JP H01128001U JP 2359288 U JP2359288 U JP 2359288U JP 2359288 U JP2359288 U JP 2359288U JP H01128001 U JPH01128001 U JP H01128001U
Authority
JP
Japan
Prior art keywords
accumulator
circuit
discharge pump
variable discharge
switching valve
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
Application number
JP2359288U
Other languages
Japanese (ja)
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 JP2359288U priority Critical patent/JPH01128001U/ja
Publication of JPH01128001U publication Critical patent/JPH01128001U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

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

第１図は本考案の油圧回路図を示す。第２図は
従来例の油圧回路図を示す。第３図は本考案に係
るアキユムレータ充填時間とアキユムレータ充填
圧力との関係を示すグラフである。第４図、第５
図は従来例のアキユムレータ充填圧力とアキユム
レータ充填流量及びアキユムレータ充填時間とア
キユムレータ充填圧力との関係を示すグラフであ
る。 １１……射出成形機、１２……タンク、１３…
…吐出流量制御ピストン、ＡＣＣ……アキユムレ
ータ、ＰＳ……プレツシヤスイツチ、Ｔ……電磁
比例流量制御弁、Ｒ２……リリーフ弁、Ｒ……電
磁比例リリーフ弁、ＰＶ……可変ポンプ、Ｍ……
モータ、Ｍ１，Ｍ２，Ｍ３……方向切換弁、Ｍ４
……圧力制御用切換弁、Ｍ５……アキユムレータ
切換弁。 FIG. 1 shows a hydraulic circuit diagram of the present invention. FIG. 2 shows a hydraulic circuit diagram of a conventional example. FIG. 3 is a graph showing the relationship between the accumulator filling time and the accumulator filling pressure according to the present invention. Figures 4 and 5
The figure is a graph showing the relationship between the accumulator filling pressure, the accumulator filling flow rate, the accumulator filling time, and the accumulator filling pressure in a conventional example. 11... Injection molding machine, 12... Tank, 13...
...Discharge flow rate control piston, ACC...Accumulator, PS...Pressure switch, T...Solenoid proportional flow control valve, R2...Relief valve, R...Solenoid proportional relief valve, PV...Variable pump, M... …
Motor, M1, M2, M3... Directional switching valve, M4
...Pressure control switching valve, M5...Accumulator switching valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 射出成形機を含む各種産業機械に使用される可
変吐出ポンプとアキユムレータを組合せた油圧回
路において、前記可変吐出ポンプと流量制御弁を
通じる回路より分岐した第１の回路上の圧力制御
用切換弁と前記可変吐出ポンプの斜板制御ライン
との間に前記アキユムレータに圧油を充填する時
のみ作動するアキユムレータ切換弁を設けると共
に、前記アキユムレータ切換弁の不良時に作動す
るリリーフ弁を前記可変吐出ポンプと前記流量制
御弁を通じる回路より分岐した第２の回路上に設
けたことを特徴とするアキユムレータ回路。 In a hydraulic circuit combining a variable discharge pump and an accumulator used in various industrial machines including injection molding machines, a pressure control switching valve on a first circuit branched from a circuit passing through the variable discharge pump and the flow control valve; An accumulator switching valve that operates only when filling the accumulator with pressure oil is provided between the swash plate control line of the variable discharge pump, and a relief valve that operates when the accumulator switching valve is malfunctioning is provided between the variable discharge pump and the An accumulator circuit characterized in that it is provided on a second circuit branched from a circuit passing through a flow control valve.
JP2359288U 1988-02-24 1988-02-24 Pending JPH01128001U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2359288U JPH01128001U (en) 1988-02-24 1988-02-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2359288U JPH01128001U (en) 1988-02-24 1988-02-24

Publications (1)

Publication Number Publication Date
JPH01128001U true JPH01128001U (en) 1989-08-31

Family

ID=31242712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2359288U Pending JPH01128001U (en) 1988-02-24 1988-02-24

Country Status (1)

Country Link
JP (1) JPH01128001U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04151004A (en) * 1990-10-11 1992-05-25 Nissan Motor Co Ltd Hydraulic pressure supplying device
JP2010230062A (en) * 2009-03-26 2010-10-14 Kayaba System Machinery Kk Oil pressure supply device
JP2013019414A (en) * 2011-07-13 2013-01-31 Linde Material Handling Gmbh Hydrostatic drive system
CN106424652A (en) * 2016-11-14 2017-02-22 苏州慧驰轻合金精密成型科技有限公司 Pressure control system and control method of middle-high-pressure casting equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6263201A (en) * 1986-06-13 1987-03-19 Daikin Ind Ltd Flow rate control circuit enabling mode switching

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6263201A (en) * 1986-06-13 1987-03-19 Daikin Ind Ltd Flow rate control circuit enabling mode switching

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04151004A (en) * 1990-10-11 1992-05-25 Nissan Motor Co Ltd Hydraulic pressure supplying device
JP2010230062A (en) * 2009-03-26 2010-10-14 Kayaba System Machinery Kk Oil pressure supply device
JP2013019414A (en) * 2011-07-13 2013-01-31 Linde Material Handling Gmbh Hydrostatic drive system
CN106424652A (en) * 2016-11-14 2017-02-22 苏州慧驰轻合金精密成型科技有限公司 Pressure control system and control method of middle-high-pressure casting equipment

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