JPS6353002U - - Google Patents

Info

Publication number
JPS6353002U
JPS6353002U JP14511986U JP14511986U JPS6353002U JP S6353002 U JPS6353002 U JP S6353002U JP 14511986 U JP14511986 U JP 14511986U JP 14511986 U JP14511986 U JP 14511986U JP S6353002 U JPS6353002 U JP S6353002U
Authority
JP
Japan
Prior art keywords
speed
hydraulic actuator
pump
discharge amount
injection molding
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
JP14511986U
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 JP14511986U priority Critical patent/JPS6353002U/ja
Publication of JPS6353002U publication Critical patent/JPS6353002U/ja
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • F15B11/0426—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in" by controlling the number of pumps or parallel valves switched on
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F15B2211/20584—Combinations of pumps with high and low capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/255—Flow control functions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75—Control of speed of the output member

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

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

第１図は本考案の実施例を示す図、第２図は本
考案による吐出量特性を示す図、第３図は従来の
吐出量特性を示す図である。 １０……油圧アクチユエータ、１２……可変吐
出量ポンプ、１４，１６，１８……固定吐出量ポ
ンプ、３６，３８，４０，４２……オンロード弁
、４４……油圧アクチユエータ速度設定器、４６
……比較器、４８……ポンプ負荷制御器、５０…
…演算装置、５２……可変吐出量ポンプ制御用サ
ーボアンプ、５３……比較速度設定器。 FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing discharge amount characteristics according to the present invention, and FIG. 3 is a diagram showing conventional discharge amount characteristics. 10... Hydraulic actuator, 12... Variable discharge amount pump, 14, 16, 18... Fixed discharge amount pump, 36, 38, 40, 42... On-load valve, 44... Hydraulic actuator speed setting device, 46
... Comparator, 48 ... Pump load controller, 50 ...
... Arithmetic device, 52 ... Servo amplifier for variable discharge amount pump control, 53 ... Comparison speed setting device.

Claims (1)

【実用新案登録請求の範囲】 射出成形機の油圧アクチユエータへ供給する油
量を制御する射出成形機の油圧制御装置において
、 油圧源を構成する１台の可変吐出量ポンプ及び
Ｎ−１（Ｎは２以上の自然数）台の固定吐出量ポ
ンプと、油圧アクチユエータの動作速度を設定す
る油圧アクチユエータ速度設定器と、油圧アクチ
ユエータの最大速度をＮ分割してＮ段の比較速度
を設定する比較速度設定器と、油圧アクチユエー
タ速度設定器によつて設定された設定速度が比較
速度設定器によつて設定された第何段の速度範囲
に入るかを半定する比較器と、上記設定速度が第
何段にあるかに応じて可変吐出量ポンプ及び所定
の組合わせの固定吐出量ポンプを負荷状態とする
ポンプ負荷制御器と、比較器が設定速度が第Ｍ（
ＭはＮ以下の自然数）段にあると判断したとき設
定速度Ｖｓ、第Ｍ段の比較速度の最小値ｍ０、及
び第Ｍ段の比較速度の最大値ｍ１に基づいて（Ｖ
ｓ−ｍ０）／（ｍ１−ｍ０）の演算を行いこれに
応じた電気信号を発生する演算装置と、演算装置
からの電気信号に基づいて可変吐出量ポンプに吐
出量指令信号を出力する可変吐出量ポンプ制御用
サーボアンプと、を有することを特徴とする射出
成形機の油圧制御装置。[Scope of Claim for Utility Model Registration] In a hydraulic control device for an injection molding machine that controls the amount of oil supplied to a hydraulic actuator of the injection molding machine, one variable discharge amount pump and N-1 (N is A natural number of 2 or more) fixed discharge rate pumps, a hydraulic actuator speed setting device that sets the operating speed of the hydraulic actuator, and a comparison speed setting device that divides the maximum speed of the hydraulic actuator into N and sets N stages of comparison speeds. , a comparator for semi-determining which speed range the set speed set by the hydraulic actuator speed setter falls within the speed range set by the comparison speed setter, and a comparator that semi-determines which speed range the set speed falls into, and a pump load controller that loads the variable displacement pump and the fixed displacement pump of a predetermined combination depending on whether the set speed is Mth (
M is a natural number equal to or less than N) When it is determined that the stage is in the stage (V
A calculation device that calculates s-m 0 )/(m 1 -m 0 ) and generates an electric signal in accordance with the calculation, and outputs a discharge amount command signal to the variable discharge amount pump based on the electric signal from the calculation device. A hydraulic control device for an injection molding machine, comprising: a servo amplifier for controlling a variable discharge amount pump.
JP14511986U 1986-09-24 1986-09-24 Pending JPS6353002U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14511986U JPS6353002U (en) 1986-09-24 1986-09-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14511986U JPS6353002U (en) 1986-09-24 1986-09-24

Publications (1)

Publication Number Publication Date
JPS6353002U true JPS6353002U (en) 1988-04-09

Family

ID=31056362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14511986U Pending JPS6353002U (en) 1986-09-24 1986-09-24

Country Status (1)

Country Link
JP (1) JPS6353002U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012173005A1 (en) * 2011-06-15 2012-12-20 宇部興産機械株式会社 Extrusion press

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5659005A (en) * 1979-10-22 1981-05-22 Kobe Steel Ltd Controller for hydraulic circuit including plural variable-capacity pumps in parallel
JPS5935771A (en) * 1982-08-24 1984-02-27 共和眞空技術株式会社 Method and device for defrosting and regenerating trap of vacuum freezing drier
JPS5932190B2 (en) * 1976-05-19 1984-08-07 富士写真フイルム株式会社 Coating method and equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5932190B2 (en) * 1976-05-19 1984-08-07 富士写真フイルム株式会社 Coating method and equipment
JPS5659005A (en) * 1979-10-22 1981-05-22 Kobe Steel Ltd Controller for hydraulic circuit including plural variable-capacity pumps in parallel
JPS5935771A (en) * 1982-08-24 1984-02-27 共和眞空技術株式会社 Method and device for defrosting and regenerating trap of vacuum freezing drier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012173005A1 (en) * 2011-06-15 2012-12-20 宇部興産機械株式会社 Extrusion press
JP2013000762A (en) * 2011-06-15 2013-01-07 Ube Machinery Corporation Ltd Extrusion press
US9643225B2 (en) 2011-06-15 2017-05-09 Ube Machinery Corporation, Ltd. Extrusion press

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