JP2007192339A - Jack device - Google Patents

Jack device Download PDF

Info

Publication number
JP2007192339A
JP2007192339A JP2006011971A JP2006011971A JP2007192339A JP 2007192339 A JP2007192339 A JP 2007192339A JP 2006011971 A JP2006011971 A JP 2006011971A JP 2006011971 A JP2006011971 A JP 2006011971A JP 2007192339 A JP2007192339 A JP 2007192339A
Authority
JP
Japan
Prior art keywords
fluid chamber
small
cylinder
piston
double
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
JP2006011971A
Other languages
Japanese (ja)
Other versions
JP4558654B2 (en
Inventor
Masanori Yashima
正典 八島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osaka Jack Manufacturiung Co Ktd
Original Assignee
Osaka Jack Manufacturiung Co Ktd
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 by Osaka Jack Manufacturiung Co Ktd filed Critical Osaka Jack Manufacturiung Co Ktd
Priority to JP2006011971A priority Critical patent/JP4558654B2/en
Priority to PCT/JP2007/000009 priority patent/WO2007083517A1/en
Publication of JP2007192339A publication Critical patent/JP2007192339A/en
Application granted granted Critical
Publication of JP4558654B2 publication Critical patent/JP4558654B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/161—Control arrangements for fluid-driven presses controlling the ram speed and ram pressure, e.g. fast approach speed at low pressure, low pressing speed at high pressure
    • 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
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
    • 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
    • F15B2211/20561—Type of pump reversible
    • 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
    • F15B2211/27—Directional control by means of the pressure source
    • 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
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
    • 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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7055—Linear output members having more than two chambers
    • 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
    • F15B2211/775—Combined control, e.g. control of speed and force for providing a high speed approach stroke with low force followed by a low speed working stroke with high force, e.g. for a hydraulic press

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a jack device compactly formable in low bulk, reducing cost, and easy in maintenance, in the jack device used for a press machine requiring a high speed in low thrust and high thrust at a low speed, and using a two-way delivery type pump means, that is, a direct drive volume control (DDV) system fluid source without using a power unit composed of a pump and a control valve. <P>SOLUTION: This jack device is composed of a double cylinder 2, a first valve means 3, a second valve means 4 and a two-way delivery type pump means 5. Large and small two cylinders A and B are particularly formed as the double cylinder 2 by double combining the inside and outside. The two-way delivery type pump means 5 is singly formed by arranging the first valve means 3 and the second valve means 4, and the first and second valve means 3 and 4 are arranged in an external part of the double cylinder 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、例えば低推力で高速度や低速度で高推力が必要なプレス機械等に用いられ、ポンプや制御弁等から成るパワーユニットを用いずに、閉回路型流体給排手段つまりダイレクトドライブボリュームコントロール（ＤＤＶ）方式の流体源を用いたジャッキ装置の改良に関する。   The present invention is used, for example, in a press machine that requires a high thrust at a low thrust and a low speed, and uses a closed circuit type fluid supply / discharge means, that is, a direct drive volume, without using a power unit including a pump and a control valve. The present invention relates to an improvement of a jack device using a control (DDV) type fluid source.

従来、この種のジャッキ装置としては、例えば特許文献１乃至特許文献３に記載されたものが知られている。
この様なものは、大小二つのシリンダを上下に連接すると共に、各シリンダ毎に閉回路型流体給排手段を設けた構造を呈している。 Conventionally, as this type of jack device, for example, those described in Patent Literature 1 to Patent Literature 3 are known.
Such a structure has a structure in which two large and small cylinders are connected vertically and a closed circuit type fluid supply / discharge means is provided for each cylinder.

特開２００４−３３７８６７号公報JP 2004-337867 A 特開２００４−３３７８６８号公報JP 2004-337868 A 特開２００４−３３７８６９号公報JP 2004-337869 A

ところが、この様なものは、二つのシリンダを上下に連接しているので、嵩高になると共に、各シリンダ毎に閉回路型流体給排手段が必要であったので、コストが高く付く難点があった。
この様な難点を解消する為に本出願人は、先に特願２００５−１３６７８３号を出願している。
然しながら、同出願のものも、弁手段の一部又は全部が二重シリンダを貫通してその内部に設けられていたので、これが故障すると、装置全体を分解して修理する必要があり、メンテナンスが非常に悪いという問題点が残されていた。 However, since such a cylinder has two cylinders connected in the vertical direction, it is bulky and requires a closed circuit type fluid supply / discharge means for each cylinder. It was.
In order to solve such difficulties, the present applicant has previously filed Japanese Patent Application No. 2005-136783.
However, in the case of the same application, part or all of the valve means passes through the double cylinder and is provided in the inside of the double cylinder. Therefore, if this breaks down, the entire device must be disassembled and repaired. The problem of being very bad was left.

本発明は、叙上の問題点に鑑み、これを解消する為に創案されたもので、その課題とする処は、嵩低くコンパクトに形成できると共に、コストの低減を図る事ができ、然もメンテナンスを行い易くしたジャッキ装置を提供するにある。   The present invention was devised in view of the problems described above, and the problem to be solved by the present invention is that it can be formed in a compact and compact manner, and the cost can be reduced. The object is to provide a jack device that facilitates maintenance.

本発明のジャッキ装置は、基本的には、大小の両ロッド型シリンダが内外に組み合わされて大きい両ロッド型シリンダの大シリンダと小さい両ロッド型シリンダの小ロッドが固定側に固定されると共に小さい両ロッド型シリンダの小シリンダを兼ねる大きい両ロッド型シリンダの大ロッドが昇降されて上下の大流体室と上下の小流体室が形成された二重シリンダと、二重シリンダの外部に設けられて上大流体室と下大流体室を通断する第一弁手段と、二重シリンダの外部に設けられて上小流体室と下大流体室を通断すると共にこの通断と同期して下小流体室と上大流体室を通断する第二弁手段と、上小流体室と下小流体室に流体を給排する二方向吐出型ポンプ手段と、から構成した事に特徴が存する。   The jack device of the present invention basically has a large double rod type cylinder combined inside and outside, and a large double rod type cylinder and a small double rod type small rod are fixed on the fixed side and small. A double cylinder in which a large rod of a large double rod cylinder that doubles as a small cylinder of a double rod cylinder is moved up and down to form upper and lower large fluid chambers and upper and lower small fluid chambers, and provided outside the double cylinder. First valve means for cutting off the upper large fluid chamber and the lower large fluid chamber, and provided on the outside of the double cylinder for cutting off the upper small fluid chamber and the lower large fluid chamber, and in synchronization with this disconnection A feature resides in that the second valve means for cutting off the small fluid chamber and the upper large fluid chamber and the two-way discharge type pump means for supplying and discharging fluid to and from the upper small fluid chamber and the lower small fluid chamber are present.

第一弁手段に依り上大流体室と下大流体室を連通させると共に、第二弁手段に依り上小流体室と下大流体室を遮断させると同時に下小流体室と上大流体室を遮断させた後、二方向吐出型ポンプ手段に依り下小流体室に流体を供給すると同時に上小流体室から流体を排出すると、大ロッドが低推力且つ高速度で下降される。
この時、下大流体室の流体は、大ピストンに依り加圧されるが、第一弁手段に依り上大流体室と下大流体室が連通されているので、上大流体室に移行される。 The upper large fluid chamber and the lower large fluid chamber are communicated by the first valve means, and the upper small fluid chamber and the lower large fluid chamber are blocked by the second valve means, and at the same time, the lower small fluid chamber and the upper large fluid chamber are separated. After the blocking, when the fluid is supplied to the lower small fluid chamber by the two-way discharge type pump means and simultaneously the fluid is discharged from the upper small fluid chamber, the large rod is lowered at a low thrust and a high speed.
At this time, the fluid in the lower large fluid chamber is pressurized by the large piston, but since the upper large fluid chamber and the lower large fluid chamber are communicated by the first valve means, the fluid is transferred to the upper large fluid chamber. The

第一弁手段に依り上大流体室と下大流体室を遮断させると共に、第二弁手段に依り上小流体室と下大流体室を連通させると同時に下小流体室と上大流体室を連通させた後、二方向吐出型ポンプ手段に依り下小流体室に流体を供給すると同時に上小流体室から流体を排出すると、大ロッドが高推力且つ低速度で下降される。
この時、下小流体室に供給された流体は、第二弁手段に依り下小流体室と上大流体室が連通されているので、上大流体室に達して大ピストンを押し下げる。下大流体室の流体は、大ピストンの押し下げに依り加圧され、第二弁手段に依り上小流体室と下大流体室が連通されているので、上小流体室に達した後にここから排出される。 The upper large fluid chamber and the lower large fluid chamber are blocked by the first valve means, and the lower small fluid chamber and the upper large fluid chamber are simultaneously communicated by the second valve means. After the communication, when the fluid is supplied to the lower small fluid chamber by the two-way discharge type pump means and simultaneously the fluid is discharged from the upper small fluid chamber, the large rod is lowered at a high thrust and a low speed.
At this time, the fluid supplied to the lower small fluid chamber reaches the upper large fluid chamber and pushes down the large piston because the lower small fluid chamber communicates with the upper large fluid chamber by the second valve means. The fluid in the lower large fluid chamber is pressurized by pushing down the large piston, and the upper small fluid chamber and the lower large fluid chamber are in communication with each other by the second valve means. Discharged.

第一弁手段に依り上大流体室と下大流体室を連通させると共に、第二弁手段に依り上小流体室と下大流体室を遮断すると同時に下小流体室と上大流体室を遮断した後、二方向吐出型ポンプ手段に依り上小流体室に流体を供給すると同時に下小流体室から流体を排出すると、大ロッドが高推力且つ低速度で上昇される。
この時、上小流体室に供給された流体は、第二弁手段に依り上小流体室と下大流体室が連通されているので、下大流体室に達して大ピストンを押し上げる。上大流体室の流体は、大ピストンの押し上げに依り加圧され、第二弁手段に依り下小流体室と上大流体室が連通されているので、下小流体室に達した後にここから排出される。 The upper large fluid chamber and the lower large fluid chamber communicate with each other by the first valve means, and the lower small fluid chamber and the lower large fluid chamber are simultaneously blocked by the second valve means. After that, when the fluid is supplied to the upper small fluid chamber by the two-way discharge type pump means and simultaneously the fluid is discharged from the lower small fluid chamber, the large rod is raised at a high thrust and a low speed.
At this time, the fluid supplied to the upper small fluid chamber reaches the lower large fluid chamber and pushes up the large piston because the upper small fluid chamber and the lower large fluid chamber communicate with each other by the second valve means. The fluid in the upper large fluid chamber is pressurized by pushing up the large piston, and the lower small fluid chamber and the upper large fluid chamber are in communication with each other by the second valve means. Discharged.

第一弁手段に依り上大流体室と下大流体室を連通させると共に、第二弁手段に依り上小流体室と下大流体室を遮断させると同時に下小流体室と上大流体室を遮断させた後、二方向吐出型ポンプ手段に依り上小流体室に流体を供給すると同時に下小流体室から流体を排出すると、大ロッドが低推力且つ高速度で上降される。
この時、上大流体室の流体は、大ピストンに依り加圧されるが、第一弁手段に依り上大流体室と下大流体室が連通されているので、下大流体室に移行される。 The upper large fluid chamber and the lower large fluid chamber are communicated by the first valve means, and the upper small fluid chamber and the lower large fluid chamber are blocked by the second valve means, and at the same time, the lower small fluid chamber and the upper large fluid chamber are separated. After the blocking, when the fluid is supplied to the upper small fluid chamber by the two-way discharge type pump means and at the same time the fluid is discharged from the lower small fluid chamber, the large rod is lowered at a low thrust and a high speed.
At this time, the fluid in the upper large fluid chamber is pressurized by the large piston. However, since the upper large fluid chamber and the lower large fluid chamber are communicated by the first valve means, the fluid is transferred to the lower large fluid chamber. The

二重シリンダは、固定側に固定された大シリンダと、大シリンダに上下方向に摺動可能に設けられた大ピストンと、大ピストンに設けられた上下の大ロッドと、大ピストンと上下の大ロッドに依り形成される小シリンダと、小シリンダに上下方向に摺動可能に設けられた小ピストンと、小ピストンに設けられて上側のものが固定側に固定された上下の小ロッドと、大ピストンの上側に形成された上大流体室と、大ピストンの下側に形成された下大流体室と、小ピストンの上側に形成された上小流体室と、小ピストンの下側に形成された下小流体室とを備えているのが好ましい。この様にすると、全体をコンパクトに構成でき、プレス機械等への設置が容易に行える。   The double cylinder is composed of a large cylinder fixed to the fixed side, a large piston slidable in the vertical direction on the large cylinder, a large upper and lower rod provided on the large piston, and a large piston and large A small cylinder formed by a rod, a small piston provided in the small cylinder so as to be slidable in the vertical direction, an upper and lower small rod provided on the small piston and having the upper one fixed to the fixed side, An upper large fluid chamber formed above the piston, a lower large fluid chamber formed below the large piston, an upper small fluid chamber formed above the small piston, and a lower piston. And a lower small fluid chamber. If it does in this way, the whole can be comprised compactly and it can install in a press machine etc. easily.

大ピストン及び小ピストンは、夫々上下の受圧面積が等しくされているのが好ましい。この様にすると、流体の給排量を等しくでき、アキュムレータやプレフィル弁やタンク等を設ける必要がなくなる。   The large piston and the small piston preferably have the same upper and lower pressure receiving areas. In this way, the fluid supply / discharge amount can be made equal, and there is no need to provide an accumulator, a prefill valve, a tank, or the like.

第一弁手段は、上大流体室と下大流体室を連通させる第一通路と、二重シリンダの外部に設けられて第一通路を開閉する第一電磁弁とを備えているのが好ましい。この様にすると、第一電磁弁のメンテナンスが容易に行えると共に、市販のものを利用する事ができる。   The first valve means preferably includes a first passage for communicating the upper large fluid chamber and the lower large fluid chamber, and a first electromagnetic valve provided outside the double cylinder for opening and closing the first passage. . In this way, maintenance of the first solenoid valve can be easily performed and a commercially available one can be used.

第二弁手段は、上小流体室と下大流体室を連通させる第二通路と、下小流体室と上大流体室を連通させる第三通路と、二重シリンダの外部に設けられて第二通路を開閉する第二電磁弁と、二重シリンダの外部に設けられて第二電磁弁と同期して第三通路を開閉する第三電磁弁とを備えているのが好ましい。この様にすると、第二電磁弁と第三電磁弁のメンテナンスが容易に行えると共に、市販のものを利用する事ができる。   The second valve means is provided outside the double cylinder and is provided with a second passage for communicating the upper small fluid chamber and the lower large fluid chamber, a third passage for communicating the lower small fluid chamber and the upper large fluid chamber, and a second cylinder. It is preferable to include a second electromagnetic valve that opens and closes the two passages and a third electromagnetic valve that is provided outside the double cylinder and opens and closes the third passage in synchronization with the second electromagnetic valve. If it does in this way, while maintaining the 2nd solenoid valve and the 3rd solenoid valve easily, a commercially available thing can be utilized.

二方向吐出型ポンプ手段は、回転駆動されるモータと、モータに依り正逆回転されるポンプと、ポンプの一方の油口と上小流体室を連通する第四通路と、ポンプの一方の油口と下小流体室を連通させる第五通路とを備えているのが好ましい。この様にすると、密封流体を循環使用できるので、上小流体室及び下小流体室の容量より小さいポンプでも駆動する事ができる。   The two-way discharge pump means includes a motor that is rotationally driven, a pump that is rotated forward and backward by the motor, a fourth passage that communicates one oil port of the pump and the upper and lower fluid chambers, and one oil of the pump. It is preferable that a fifth passage for communicating the mouth and the lower small fluid chamber is provided. In this way, since the sealed fluid can be circulated and used, it is possible to drive even a pump smaller than the capacity of the upper small fluid chamber and the lower small fluid chamber.

本発明に依れば、次の様な優れた効果を奏する事ができる。
（１） 二重シリンダ、第一弁手段、第二弁手段、二方向吐出型ポンプ手段とで構成し、とりわけ大小二つのシリンダを内外二重に組合わせて構成すると共に、第一弁手段と第二弁手段とを設けて二方向吐出型ポンプ手段を単一にしたので、嵩低くコンパクトに形成できると共に、コストの低減を図る事ができる。
（２） 弁手段は、二重シリンダの外部に設けられているので、これが故障しても、装置全体を分解して修理する必要がなく、メンテナンスが容易に行えると共に、市販のものを利用する事ができる。
（３） 弁手段は、二重シリンダの外部に設けられているので、これが作動しても流体室内の流体量が変化する事がなく、二重シリンダの精度の高い昇降が行える。つまり、弁手段が二重シリンダの内部に設けられている場合は、大シリンダの昇降に依り上大流体室に臨んでいる弁棒の長さが変化し、その分だけ上大流体室内の流体量が変化するので、二重シリンダの精度の高い昇降が行えない。
（４） 二方向吐出型ポンプ手段を用いているので、加圧シリンダ手段を用いるものに比べて、密封流体を循環使用する事ができ、上小流体室及び下小流体室の容量より小さいポンプでも駆動する事ができる。
（５） 二方向吐出型ポンプ手段を用いているので、加圧シリンダ手段を用いるものに比べて、ピストンの加圧、引張り両方向に対しても、制御する事ができる。 According to the present invention, the following excellent effects can be achieved.
(1) A double cylinder, a first valve means, a second valve means, and a two-way discharge type pump means, and in particular, a combination of two large and small cylinders inside and outside, and a first valve means Since the second valve means is provided and the two-way discharge type pump means is made a single unit, it can be formed in a compact and compact manner, and the cost can be reduced.
(2) Since the valve means is provided outside the double cylinder, even if it breaks down, it is not necessary to disassemble and repair the entire device, making maintenance easy and using a commercially available one. I can do things.
(3) Since the valve means is provided outside the double cylinder, the amount of fluid in the fluid chamber does not change even if it operates, and the double cylinder can be raised and lowered with high accuracy. In other words, when the valve means is provided inside the double cylinder, the length of the valve rod facing the upper large fluid chamber changes as the large cylinder moves up and down, and the fluid in the upper large fluid chamber is correspondingly changed. Since the amount changes, the double cylinder cannot be raised or lowered with high accuracy.
(4) Since the two-way discharge type pump means is used, it is possible to circulate and use the sealed fluid as compared with the one using the pressure cylinder means, and the pump is smaller than the capacity of the upper small fluid chamber and the lower small fluid chamber. But you can drive.
(5) Since the two-way discharge type pump means is used, it is possible to control both the pressure and tension directions of the piston as compared with those using the pressure cylinder means.

以下、本発明の実施の形態を、図面に基づいて説明する。
図１は、本発明のジャッキ装置を示す縦断正面図。図２は、図１の平面図。図３は、高速下降状態を示す作動説明図。図４は、低速下降（加圧）状態を示す図３と同様図。図５は、低速上昇（圧抜き）状態を示す図３と同様図。図６は、高速上昇状態を示す図３と同様図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal front view showing a jack device of the present invention. FIG. 2 is a plan view of FIG. FIG. 3 is an operation explanatory view showing a high-speed descending state. FIG. 4 is a view similar to FIG. FIG. 5 is a view similar to FIG. FIG. 6 is a view similar to FIG. 3 showing the high-speed rising state.

ジャッキ装置１は、二重シリンダ２、第一弁手段３、第二弁手段４、二方向吐出型ポンプ手段５からその主要部が構成されて居り、例えばプレス機械等に適用される。ジャッキ装置１は、この例では、各図の上方を上として縦向きに設置されている。   The jack device 1 is composed of a double cylinder 2, a first valve means 3, a second valve means 4, and a two-way discharge pump means 5, and is applied to, for example, a press machine. In this example, the jack apparatus 1 is installed vertically with the upper side of each figure as an upper side.

二重シリンダ２は、大小の両ロッド型シリンダＡ，Ｂが内外に組み合わされて大きい両ロッド型シリンダＡの大シリンダ６と小さい両ロッド型シリンダＢの小ロッド１１が固定側に固定されると共に小さい両ロッド型シリンダＢの小シリンダ９を兼ねる大きい両ロッド型シリンダＡの大ロッド８が昇降されて上下の大流体室１２，１３と上下の小流体室１４，１５が形成されたもので、この例では、プレス機械のフレーム等の固定側Ｃに固定された大シリンダ６と、大シリンダ６に上下方向に摺動可能に設けられた大ピストン７と、大ピストン７に設けられた上下の大ロッド８と、大ピストン７と上下の大ロッド８に依り形成される小シリンダ９と、小シリンダ９に上下方向に摺動可能に設けられた小ピストン１０と、小ピストン１０に設けられて上側のものが固定側Ｃに固定された上下の小ロッド１１と、大ピストン７の上側に形成された上大流体室１２と、大ピストン７の下側に形成された下大流体室１３と、小ピストン１０の上側に形成された上小流体室１４と、小ピストン１０の下側に形成された下小流体室１５とを備えている。
具体的には、大シリンダ６の下部が固定側Ｃに固定されると共に、上側の小ロッド１１の上部には、配管ブロックが１６が設けられて居り、これと大シリンダ６の上部とは、適数の連結材１７に依り連結されている。 In the double cylinder 2, the large and small double rod cylinders A and B are combined inside and outside, and the large cylinder 6 of the large double rod cylinder A and the small rod 11 of the small double rod cylinder B are fixed to the fixed side. The large rod 8 of the large double rod cylinder A that doubles as the small cylinder 9 of the small double rod cylinder B is moved up and down to form upper and lower large fluid chambers 12 and 13 and upper and lower small fluid chambers 14 and 15. In this example, a large cylinder 6 fixed to a fixed side C such as a frame of a press machine, a large piston 7 provided on the large cylinder 6 so as to be slidable in the vertical direction, and an upper and lower provided on the large piston 7 A large cylinder 8, a small cylinder 9 formed by the large piston 7 and the upper and lower large rods 8, a small piston 10 slidably provided in the small cylinder 9 in the vertical direction, and a small piston 10. The upper and lower small rods 11 whose upper side is fixed to the fixed side C, the upper large fluid chamber 12 formed on the upper side of the large piston 7, and the lower large fluid chamber formed on the lower side of the large piston 7 13, an upper small fluid chamber 14 formed on the upper side of the small piston 10, and a lower small fluid chamber 15 formed on the lower side of the small piston 10.
Specifically, the lower portion of the large cylinder 6 is fixed to the fixed side C, and a piping block 16 is provided on the upper portion of the upper small rod 11. They are connected by an appropriate number of connecting members 17.

下大ロッド８は、下小ロッド１１を内包すべく中空状にされて下端が蓋体１８に依り閉塞されている。蓋体１８には、図略しているが、プレス型等が取り付けられる。
大ピストン７及び小ピストン１０は、上下の受圧面積が等しくされている。つまり、上下の大ロッド８を同径にする事に依り大ピストン７の上下の受圧面積が等しくされていると共に、上下の小ロッド１１を同径にする事に依り小ピストン１０の上下の受圧面積が等しくされている。
大シリンダ６と大ピストン７と上下の大ロッド８は、大きい両ロッド型シリンダＡを為していると共に、小シリンダ９と小ピストン１０と上下の小ロッド１１は、小さい両ロッド型シリンダＢを為して居り、大ピストン７と上下の大ロッド８は、小シリンダ９を兼用している。 The lower large rod 8 is made hollow so as to contain the lower small rod 11, and the lower end is closed by a lid 18. Although not shown, a press die or the like is attached to the lid 18.
The large piston 7 and the small piston 10 have the same upper and lower pressure receiving areas. In other words, the upper and lower pressure receiving areas of the large piston 7 are made equal by making the upper and lower large rods 8 have the same diameter, and the upper and lower pressure receiving forces of the small piston 10 are made by making the upper and lower small rods 11 have the same diameter. The areas are equal.
The large cylinder 6, the large piston 7 and the upper and lower large rods 8 form a large double rod type cylinder A, and the small cylinder 9, the small piston 10 and the upper and lower small rods 11 form a small double rod type cylinder B. Therefore, the large piston 7 and the upper and lower large rods 8 also serve as the small cylinder 9.

第一弁手段３は、二重シリンダ２の上大流体室１２と下大流体室１３を通断するもので、この例では、上大流体室１２と下大流体室１３を連通させる第一通路１９と、二重シリンダ２の外部に設けられて第一通路１９を開閉する第一電磁弁２０とを備えている。
第一通路１９は、二重シリンダ２の大シリンダ６に穿設されていると共に、一部が配管に依りこれの外部に形成されている。
第一電磁弁２０は、第一通路１９の配管部分に介設されて二重シリンダ２の大シリンダ６の側方上部に設けられている。第一電磁弁２０は、二ポート二位置電磁切換弁が用いられて居り、図略しているが、そのソレノイドが制御器を介して電源に接続されている。 The first valve means 3 disconnects the upper large fluid chamber 12 and the lower large fluid chamber 13 of the double cylinder 2. In this example, the first valve means 3 communicates the upper large fluid chamber 12 and the lower large fluid chamber 13. A passage 19 and a first electromagnetic valve 20 provided outside the double cylinder 2 to open and close the first passage 19 are provided.
The first passage 19 is formed in the large cylinder 6 of the double cylinder 2 and a part thereof is formed outside the pipe depending on the pipe.
The first solenoid valve 20 is provided in the upper part of the large cylinder 6 of the double cylinder 2 so as to be interposed in the piping portion of the first passage 19. The first electromagnetic valve 20 is a two-port two-position electromagnetic switching valve, and although not shown, the solenoid is connected to a power source via a controller.

第二弁手段４は、上小流体室１４と下大流体室１３を通断すると共にこの通断と同期して下小流体室と１５上大流体室１２とを通断するもので、この例では、上小流体室１４と下大流体室１３を連通させる第二通路２１と、下小流体室１５と上大流体室１２を連通させる第三通路２２と、二重シリンダ２の外部に設けられて第二通路２１を開閉する第二電磁弁２３と、二重シリンダ２の外部に設けられて第二電磁弁２３と同期して第三通路２２を開閉する第三電磁弁２４とを備えている。
第二通路２１は、二重シリンダ２の上側の小ロッド１１と配管ブロック１６と大シリンダ６に穿設されていると共に、一部が配管に依りこれらの外部に形成されて居り、第一通路１９の一部が共用されている。
第三通路２２は、二重シリンダ２の上側の小ロッド１１と配管ブロック１６と大シリンダ６にに穿設されていると共に、一部が配管に依りこれらの外部に形成されている。
第二電磁弁２３及び第三電磁弁２４は、配管ブロック１６の上部に設けられて居り、第二通路２１及び第三通路２２の途中に介設されている。両電磁弁２３，２４は、二ポート二位置電磁切換弁が用いられて居り、図略しているが、同期して開閉すべくそのソレノイドが制御器を介して電源に接続されている。 The second valve means 4 disconnects the upper small fluid chamber 14 and the lower large fluid chamber 13 and disconnects the lower small fluid chamber 15 and the upper large fluid chamber 12 in synchronization with this disconnection. In the example, the second passage 21 that communicates the upper small fluid chamber 14 and the lower large fluid chamber 13, the third passage 22 that communicates the lower small fluid chamber 15 and the upper large fluid chamber 12, and the outside of the double cylinder 2. A second electromagnetic valve 23 provided to open and close the second passage 21; and a third electromagnetic valve 24 provided outside the double cylinder 2 to open and close the third passage 22 in synchronization with the second electromagnetic valve 23. I have.
The second passage 21 is formed in the small rod 11 on the upper side of the double cylinder 2, the piping block 16, and the large cylinder 6, and a part of the second passage 21 is formed outside by the piping. A part of 19 is shared.
The third passage 22 is formed in the small rod 11 on the upper side of the double cylinder 2, the piping block 16, and the large cylinder 6, and a part of the third passage 22 is formed outside these depending on the piping.
The second electromagnetic valve 23 and the third electromagnetic valve 24 are provided in the upper part of the piping block 16, and are interposed in the middle of the second passage 21 and the third passage 22. The two solenoid valves 23 and 24 are two-port two-position electromagnetic switching valves, and although not shown, their solenoids are connected to a power source via a controller to open and close in synchronization.

二方向吐出型ポンプ手段５は、上小流体室１４と下小流体室１５に流体を給排するもので、この例では、回転駆動されるモータ２５と、モータ２５に依り正逆回転されるポンプ２６と、ポンプ２６の一方の油口と上小流体室１４を連通させる第四通路２７と、ポンプ２６の他方の油口と下小流体室１５を連通させる第五通路２８とを備えている。
モータ２５は、電動機であるサーボモータにしてあり、図略しているが、制御器を介して電源に接続されて居り、制御器に依り回転方向と回転速度が制御される様になっている。
ポンプ２６は、二方向吐出型の定容量型油圧ポンプにしてある。
モータ２５とポンプ２６は、直結されて一体化されて居り、固定側Ｃに設けられている。具体的には、二重シリンダ２の大シリンダ６の側方上部に取付けられている。
第四通路２７は、二重シリンダ２の上側の小ロッド１１と配管ブロック６に穿設されて居り、第二通路２１の一部が共用されている。
第五通路２８は、二重シリンダ２の上側の小ロッド１１と小ピストン１０と配管ブロック１６に穿設されて居り、第三通路２２の一部が共用されている。 The two-way discharge type pump means 5 supplies and discharges fluid to and from the upper small fluid chamber 14 and the lower small fluid chamber 15. In this example, the motor 25 is rotationally driven, and is rotated forward and backward by the motor 25. The pump 26, a fourth passage 27 that communicates one oil port of the pump 26 with the upper small fluid chamber 14, and a fifth passage 28 that communicates the other oil port of the pump 26 and the lower small fluid chamber 15. Yes.
The motor 25 is a servo motor, which is an electric motor, and is not shown, but is connected to a power source via a controller, and the rotation direction and rotation speed are controlled by the controller.
The pump 26 is a two-way discharge type constant displacement hydraulic pump.
The motor 25 and the pump 26 are directly connected and integrated, and are provided on the fixed side C. Specifically, it is attached to the side upper part of the large cylinder 6 of the double cylinder 2.
The fourth passage 27 is formed in the small rod 11 on the upper side of the double cylinder 2 and the piping block 6, and a part of the second passage 21 is shared.
The fifth passage 28 is formed in the small rod 11 on the upper side of the double cylinder 2, the small piston 10, and the piping block 16, and a part of the third passage 22 is shared.

而して、大シリンダ６と大ピストン７との間、大シリンダ６と大ロッド８との間、小シリンダ９と小ピストン１０との間、小シリンダ９と小ロッド１１との間の各摺動箇所には、シール材が介設されている。
上大流体室１２、下大流体室１３、上小流体室１４、下小流体室１５、第一通路１９、第二通路２１、第三通路２２、第四通路２７、第五通路２８等には、作動油等の流体が満たされている。 Thus, each slide between the large cylinder 6 and the large piston 7, between the large cylinder 6 and the large rod 8, between the small cylinder 9 and the small piston 10, and between the small cylinder 9 and the small rod 11. A sealing material is interposed at the moving part.
Upper large fluid chamber 12, lower large fluid chamber 13, upper small fluid chamber 14, lower small fluid chamber 15, first passage 19, second passage 21, third passage 22, fourth passage 27, fifth passage 28, etc. Is filled with fluid such as hydraulic oil.

次に、この様な構成に基づいてその作用を述解する。
図３〜図６は、ジャッキ装置１をプレス機械に適用した場合の動作を例示している。 Next, the operation will be described based on such a configuration.
3-6 has illustrated operation | movement at the time of applying the jack apparatus 1 to a press machine.

図３に示す如く、第一弁手段３の第一電磁弁２０を開弁させる事に依り上大流体室１２と下大流体室１３を連通させると共に、第二弁手段４の第二電磁弁２３及び第三電磁弁２４を閉弁させる事に依り上小流体室１４と下大流体室１３を遮断させると同時に下小流体室１５と上大流体室１２を遮断させた後、二方向吐出型ポンプ手段５のポンプ２６に依り下小流体室１５に流体を供給すると同時に上小流体室１４から流体を排出すると、大ロッド８が低推力且つ高速度で下降され、所謂高速下降される。
この時、下大流体室１３の流体は、大ピストン７に依り加圧されるが、第一弁手段３の第一電磁弁２０に依り上大流体室１２と下大流体室１３が連通されているので、上大流体室１２に移行される。 As shown in FIG. 3, by opening the first solenoid valve 20 of the first valve means 3, the upper large fluid chamber 12 and the lower large fluid chamber 13 are communicated with each other, and the second solenoid valve of the second valve means 4 is connected. The upper small fluid chamber 14 and the lower large fluid chamber 13 are shut off by closing the valve 23 and the third solenoid valve 24, and at the same time the lower small fluid chamber 15 and the upper large fluid chamber 12 are shut off, and then the two-way discharge is performed. When the fluid is supplied to the lower small fluid chamber 15 by the pump 26 of the mold pump means 5 and the fluid is discharged from the upper small fluid chamber 14, the large rod 8 is lowered at a low thrust and a high speed, so-called high speed.
At this time, the fluid in the lower large fluid chamber 13 is pressurized by the large piston 7, but the upper large fluid chamber 12 and the lower large fluid chamber 13 are communicated by the first electromagnetic valve 20 of the first valve means 3. Therefore, the upper fluid chamber 12 is transferred.

図４に示す如く、第一弁手段３の第一電磁弁２０を閉弁させる事に依り上大流体室１２と下大流体室１３を遮断させると共に、第二弁手段４の第二電磁弁２３及び第三電磁弁２４を開弁させる事に依り上小流体室１４と下大流体室１３を連通させると同時に下小流体室１５と上大流体室１２を連通させた後、二方向吐出型ポンプ手段５のポンプ２６に依り下小流体室１５に流体を供給すると同時に上小流体室１４から流体を排出すると、大ロッド８が高推力且つ低速度で下降され、所謂加圧される。
この時、下小流体室１５に供給された流体は、第二弁手段４の第三電磁弁２４に依り下小流体室１５と上大流体室１２が連通されているので、上大流体室１２に達して大ピストン７を押し下げる。下大流体室１３の流体は、大ピストン７の押し下げに依り加圧され、第二弁手段４の第二電磁弁２３に依り上小流体室１４と下大流体室１３が連通されているので、上小流体室１４に達した後にここから排出される。 As shown in FIG. 4, by closing the first solenoid valve 20 of the first valve means 3, the upper large fluid chamber 12 and the lower large fluid chamber 13 are shut off, and the second solenoid valve of the second valve means 4. After opening the upper small fluid chamber 14 and the lower large fluid chamber 13 by opening the valve 23 and the third solenoid valve 24, the lower small fluid chamber 15 and the upper large fluid chamber 12 are simultaneously communicated, and then the two-way discharge is performed. When a fluid is supplied to the lower small fluid chamber 15 by the pump 26 of the mold pump means 5 and at the same time the fluid is discharged from the upper small fluid chamber 14, the large rod 8 is lowered at a high thrust and at a low speed and is so-called pressurized.
At this time, the fluid supplied to the lower small fluid chamber 15 is in communication with the lower small fluid chamber 15 and the upper large fluid chamber 12 by the third electromagnetic valve 24 of the second valve means 4. 12 is reached and the large piston 7 is pushed down. The fluid in the lower large fluid chamber 13 is pressurized by the depression of the large piston 7, and the upper small fluid chamber 14 and the lower large fluid chamber 13 are communicated by the second electromagnetic valve 23 of the second valve means 4. Then, after reaching the upper small fluid chamber 14, it is discharged from here.

図５に示す如く、第一弁手段３の第一電磁弁２０を閉弁させる事に依り上大流体室１２と下大流体室１３を遮断させると共に、第二弁手段４の第二電磁弁２３及び第三電磁弁２４を開弁させる事に依り上小流体室１４と下大流体室１３を連通させると同時に下小流体室１５と上大流体室１２を連通させた後、二方向吐出型ポンプ手段５のポンプ２６に依り上小流体室１４に流体を供給すると同時に下小流体室１５から流体を排出すると、大ロッド８が高推力且つ低速度で上昇され、所謂圧抜きされる。
この時、上小流体室１４に供給された流体は、第二弁手段４の第二電磁弁２３に依り上小流体室１４と下大流体室１３が連通されているので、下大流体室１３に達して大ピストン７を押し上げる。上大流体室１２の流体は、大ピストン７の押し上げに依り加圧され、第二弁手段４の第三電磁弁２４に依り下小流体室１５と上大流体室１２が連通されているので、下小流体室１５に達した後にここから排出される。 As shown in FIG. 5, by closing the first solenoid valve 20 of the first valve means 3, the upper large fluid chamber 12 and the lower large fluid chamber 13 are shut off, and the second solenoid valve of the second valve means 4. After opening the upper small fluid chamber 14 and the lower large fluid chamber 13 by opening the valve 23 and the third solenoid valve 24, the lower small fluid chamber 15 and the upper large fluid chamber 12 are simultaneously communicated, and then the two-way discharge is performed. When the fluid is supplied to the upper small fluid chamber 14 by the pump 26 of the mold pump means 5 and at the same time the fluid is discharged from the lower small fluid chamber 15, the large rod 8 is raised at a high thrust and a low speed, so-called depressurization.
At this time, the fluid supplied to the upper small fluid chamber 14 communicates with the upper small fluid chamber 14 and the lower large fluid chamber 13 by the second electromagnetic valve 23 of the second valve means 4. 13 is reached and the large piston 7 is pushed up. The fluid in the upper large fluid chamber 12 is pressurized by the large piston 7 being pushed up, and the lower small fluid chamber 15 and the upper large fluid chamber 12 are communicated by the third electromagnetic valve 24 of the second valve means 4. Then, after reaching the lower small fluid chamber 15, it is discharged from here.

図６に示す如く、第一弁手段３の第一電磁弁２０を開弁させる事に依り上大流体室１２と下大流体室１３とを連通させると共に、第二弁手段４の第二電磁弁２３及び第三電磁弁２４を閉弁させる事に依り上小流体室１４と下大流体室１３を遮断させると同時に下小流体室１５と上大流体室１２を遮断させた後、二方向吐出型ポンプ手段５のポンプ２６に依り上小流体室１４に流体を供給すると同時に下小流体室１５から流体を排出すると、大ロッド８が低推力且つ高速度で上昇され、所謂高速上昇される。
この時、上大流体室１２の流体は、大ピストン７に依り加圧されるが、第一弁手段３の第一電磁弁２０に依り上大流体室１２と下大流体室１３が連通されているので、下大流体室１３に移行される。 As shown in FIG. 6, the upper large fluid chamber 12 and the lower large fluid chamber 13 are communicated with each other by opening the first electromagnetic valve 20 of the first valve means 3, and the second electromagnetic of the second valve means 4. By closing the valve 23 and the third electromagnetic valve 24, the upper small fluid chamber 14 and the lower large fluid chamber 13 are blocked, and at the same time the lower small fluid chamber 15 and the upper large fluid chamber 12 are blocked, then the two directions When the fluid is supplied to the upper small fluid chamber 14 by the pump 26 of the discharge type pump means 5 and the fluid is discharged from the lower small fluid chamber 15, the large rod 8 is raised at a low thrust and a high speed, so-called high speed. .
At this time, the fluid in the upper large fluid chamber 12 is pressurized by the large piston 7, but the upper large fluid chamber 12 and the lower large fluid chamber 13 are communicated by the first electromagnetic valve 20 of the first valve means 3. Therefore, the lower large fluid chamber 13 is transferred.

図６の状態から、二方向吐出型ポンプ手段５のポンプ２６の吐出方向を切換えると、図３の状態に戻す事ができ、この様な一連の動作が繰り返して行われる。   If the discharge direction of the pump 26 of the two-way discharge type pump means 5 is switched from the state of FIG. 6, it can be returned to the state of FIG. 3, and such a series of operations are repeated.

この例では、図３と図６に示す状態が低推力で高速度の移動つまり早送りが行われると共に、図４と図５に示す状態が低速度で高推力の移動つまり加圧が行われる様にしてある。これらのストロークは、第一弁手段３の第一電磁弁２０と第二弁手段４の第二電磁弁２３及び第三電磁弁２４の作動時期に依り任意に変える事ができる。   In this example, the state shown in FIGS. 3 and 6 is low thrust and high speed movement, that is, rapid feed, and the state shown in FIGS. 4 and 5 is low speed and high thrust movement, that is, pressurization is performed. It is. These strokes can be arbitrarily changed depending on the operation timing of the first electromagnetic valve 20 of the first valve means 3 and the second electromagnetic valve 23 and the third electromagnetic valve 24 of the second valve means 4.

この様なものは、次の利点がある。
（１） 早送り機構を内蔵して居り、早送り時には、内部で流体を循環させる様にしているので、プレフィル弁が不要となる。
（２） 早送り時及び加圧時共に、流体の入る量と出る量が同一なため、タンクのない閉回路にする事ができる。
（３） 流体の方向を切換える事に依り任意の位置で早送りと加圧とを切換える事ができると共に、流体の流量を制御する事に依り微妙な昇圧や減圧制御及び位置制御が可能になる。
（４） 上昇時には、内部で流体の方向を切換える事に依り高速と低速との切換が容易に行える。
（５） 二重シリンダ２の作動時のみにポンプ２６を作動させるので、タンクや制御弁等が不要となり、省エネルギ、低騒音、少発熱、省スペースが可能になる。
（６） 電磁弁２０，２３，２４とモータ（電動機）２５を用いているので、駆動源が電源の一系統だけで済み、制御も行い易く、極めて合理的である。
（７） 第一乃至第五通路１９，２１，２２，２７，２８は、二重シリンダ２の大シリンダ６や小ロッド１１等の所謂固定側Ｃに設けているので、これらが形成し易く、第一乃至第三電磁弁２０，２３，２４やモータ２５の設置並びにこれらへの配線が容易に行える。
（８） 二重シリンダ２の側部に二方向吐出型ポンプ手段５を並設しているので、上下方向に嵩張らず、コンパクトに構成できる。 Such a thing has the following advantages.
(1) Since a rapid feed mechanism is built in and fluid is circulated inside during fast feed, no prefill valve is required.
(2) Since the amount of fluid entering and exiting is the same for both rapid traverse and pressurization, a closed circuit without a tank can be achieved.
(3) It is possible to switch between fast-forwarding and pressurization at an arbitrary position by switching the direction of the fluid, and it is possible to perform subtle pressure increase / decrease control and position control by controlling the flow rate of the fluid.
(4) When ascending, switching between high speed and low speed can be easily performed by switching the direction of fluid inside.
(5) Since the pump 26 is operated only when the double cylinder 2 is operated, a tank, a control valve and the like are not required, and energy saving, low noise, low heat generation, and space saving are possible.
(6) Since the solenoid valves 20, 23, 24 and the motor (electric motor) 25 are used, only one power source is required as a drive source, control is easy, and it is extremely rational.
(7) Since the first to fifth passages 19, 21, 22, 27, 28 are provided on the so-called fixed side C of the double cylinder 2 such as the large cylinder 6 and the small rod 11, these are easy to form, The first to third electromagnetic valves 20, 23, 24 and the motor 25 can be easily installed and wired to them.
(8) Since the two-way discharge type pump means 5 is provided side by side on the side of the double cylinder 2, it is not bulky in the vertical direction and can be configured compactly.

尚、ジャッキ装置１は、先の例では、縦向きであったが、これに限らず、例えば横向きや斜め向き等でも良い。
二方向吐出型ポンプ手段２のモータ２５は、先の例では、サーボモータであったが、これに限らず、例えばインバータモータでも良い。
二方向吐出型ポンプ手段２のポンプ２６は、先の例では、定容量型であったが、これに限らず、例えば可変容量型でも良い。
第一弁手段３の第一通路１９は、先の例では、一部が配管であったが、これに限らず、例えば大シリンダ６の外側にこれれと同心状にパイプを設けてこれらに依り形成される環状の空間を利用しても良い。
第二弁手段４は、先の例では、二つの電磁弁２３，２４を用いたが、これに限らず、例えば単一の電磁弁等を用いても良い。 In the above example, the jack device 1 has been vertically oriented, but is not limited thereto, and may be, for example, horizontally or obliquely.
The motor 25 of the two-way discharge type pump unit 2 is a servo motor in the previous example, but is not limited thereto, and may be an inverter motor, for example.
In the previous example, the pump 26 of the two-way discharge pump means 2 is a constant capacity type, but is not limited thereto, and may be a variable capacity type, for example.
In the previous example, the first passage 19 of the first valve means 3 was partially a pipe. However, the first passage 19 is not limited to this. Alternatively, an annular space formed may be used.
In the previous example, the second valve means 4 uses the two electromagnetic valves 23 and 24. However, the second valve means 4 is not limited to this, and for example, a single electromagnetic valve or the like may be used.

本発明のジャッキ装置を示す縦断正面図。1 is a longitudinal front view showing a jack device of the present invention. 図１の平面図。The top view of FIG. 高速下降状態を示す作動説明図。Operation | movement explanatory drawing which shows a high-speed descent | fall state. 低速下降（加圧）状態を示す図３と同様図。The same figure as FIG. 3 which shows a low-speed fall (pressurization) state. 低速上昇（圧抜き）状態を示す図３と同様図。The same figure as FIG. 3 which shows a low-speed raise (pressure release) state. 高速上昇状態を示す図３と同様図。The same figure as FIG. 3 which shows a high-speed raise state.

符号の説明Explanation of symbols

１…ジャッキ装置、２…二重シリンダ、３…第一弁手段、４…第二弁手段、５…二方向吐出型ポンプ手段、６…大シリンダ、７…大ピストン、８…大ロッド、９…小シリンダ、１０…小ピストン、１１…小ロッド、１２…上大流体室、１３…下大流体室、１４…上小流体室、１５…下小流体室、１６…配管ブロック、１７…連結材、１８…蓋体、１９…第一通路、２０…第一電磁弁、２１…第二通路、２２…第三通路、２３…第二電磁弁、２４…第三電磁弁、２５…モータ、２６…ポンプ、２７…第四通路、２８…第五通路、Ａ…大きい両ロッド型シリンダ、Ｂ…小さい両ロッド型シリンダ、Ｃ…固定側。

DESCRIPTION OF SYMBOLS 1 ... Jack apparatus, 2 ... Double cylinder, 3 ... 1st valve means, 4 ... 2nd valve means, 5 ... Two-way discharge type pump means, 6 ... Large cylinder, 7 ... Large piston, 8 ... Large rod, 9 ... Small cylinder, 10 ... Small piston, 11 ... Small rod, 12 ... Upper large fluid chamber, 13 ... Lower large fluid chamber, 14 ... Upper small fluid chamber, 15 ... Lower small fluid chamber, 16 ... Piping block, 17 ... Connection Material: 18 ... Lid, 19 ... First passage, 20 ... First solenoid valve, 21 ... Second passage, 22 ... Third passage, 23 ... Second solenoid valve, 24 ... Third solenoid valve, 25 ... Motor, 26 ... pump, 27 ... fourth passage, 28 ... fifth passage, A ... large double rod type cylinder, B ... small double rod type cylinder, C ... fixed side.

Claims (6)

大小の両ロッド型シリンダが内外に組み合わされて大きい両ロッド型シリンダの大シリンダと小さい両ロッド型シリンダの小ロッドが固定側に固定されると共に小さい両ロッド型シリンダの小シリンダを兼ねる大きい両ロッド型シリンダの大ロッドが昇降されて上下の大流体室と上下の小流体室が形成された二重シリンダと、二重シリンダの外部に設けられて上大流体室と下大流体室を通断する第一弁手段と、二重シリンダの外部に設けられて上小流体室と下大流体室を通断すると共にこの通断と同期して下小流体室と上大流体室を通断する第二弁手段と、上小流体室と下小流体室に流体を給排する二方向吐出型ポンプ手段と、から構成した事を特徴とするジャッキ装置。 A large double rod that combines a large double rod type cylinder with a large double rod type cylinder and a small double rod type cylinder with the small rod of the small double rod type cylinder fixed to the fixed side. A double cylinder in which a large rod of a cylinder is raised and lowered to form upper and lower large fluid chambers and upper and lower small fluid chambers, and an upper large fluid chamber and a lower large fluid chamber are cut off from the double cylinder. The first valve means, which is provided outside the double cylinder, cuts off the upper small fluid chamber and the lower large fluid chamber, and cuts off the lower small fluid chamber and the upper large fluid chamber in synchronization with this disconnection. A jack apparatus comprising: a second valve means; and a two-way discharge type pump means for supplying and discharging fluid to and from an upper small fluid chamber and a lower small fluid chamber. 二重シリンダは、固定側に固定された大シリンダと、大シリンダに上下方向に摺動可能に設けられた大ピストンと、大ピストンに設けられた上下の大ロッドと、大ピストンと上下の大ロッドに依り形成される小シリンダと、小シリンダに上下方向に摺動可能に設けられた小ピストンと、小ピストンに設けられて上側のものが固定側に固定された上下の小ロッドと、大ピストンの上側に形成された上大流体室と、大ピストンの下側に形成された下大流体室と、小ピストンの上側に形成された上小流体室と、小ピストンの下側に形成された下小流体室とを備えている請求項１に記載のジャッキ装置。 The double cylinder is composed of a large cylinder fixed to the fixed side, a large piston slidable in the vertical direction on the large cylinder, a large upper and lower rod provided on the large piston, and a large piston and large A small cylinder formed by a rod, a small piston provided in the small cylinder so as to be slidable in the vertical direction, an upper and lower small rod provided on the small piston and having the upper one fixed to the fixed side, An upper large fluid chamber formed above the piston, a lower large fluid chamber formed below the large piston, an upper small fluid chamber formed above the small piston, and a lower piston. The jack device according to claim 1, further comprising a lower small fluid chamber. 大ピストン及び小ピストンは、夫々上下の受圧面積が等しくされている請求項１に記載のジャッキ装置。 The jack device according to claim 1, wherein the large piston and the small piston have equal upper and lower pressure receiving areas. 第一弁手段は、上大流体室と下大流体室を連通させる第一通路と、二重シリンダの外部に設けられて第一通路を開閉する第一電磁弁とを備えている請求項１に記載のジャッキ装置。 The first valve means includes a first passage for communicating the upper large fluid chamber and the lower large fluid chamber, and a first electromagnetic valve provided outside the double cylinder for opening and closing the first passage. The jack apparatus as described in 2. 第二弁手段は、上小流体室と下大流体室を連通させる第二通路と、下小流体室と上大流体室を連通させる第三通路と、二重シリンダの外部に設けられて第二通路を開閉する第二電磁弁と、二重シリンダの外部に設けられて第二電磁弁と同期して第三通路を開閉する第三電磁弁とを備えている請求項１に記載のジャッキ装置。 The second valve means is provided outside the double cylinder and is provided with a second passage for communicating the upper small fluid chamber and the lower large fluid chamber, a third passage for communicating the lower small fluid chamber and the upper large fluid chamber, and a second cylinder. The jack according to claim 1, further comprising: a second solenoid valve that opens and closes the two passages; and a third solenoid valve that is provided outside the double cylinder and opens and closes the third passage in synchronization with the second solenoid valve. apparatus. 二方向吐出型ポンプ手段は、回転駆動されるモータと、モータに依り正逆回転されるポンプと、ポンプの一方の油口と上小流体室を連通する第四通路と、ポンプの他方の油口と下小流体室を連通させる第五通路とを備えている請求項１に記載のジャッキ装置。

The two-way discharge pump means includes a motor that is driven to rotate, a pump that is rotated forward and backward by the motor, a fourth passage that communicates one oil port of the pump and the upper and lower fluid chambers, and the other oil of the pump. The jack device according to claim 1, further comprising a fifth passage communicating the opening and the lower small fluid chamber.

JP2006011971A 2006-01-20 2006-01-20 Jacking device Expired - Fee Related JP4558654B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2006011971A JP4558654B2 (en) 2006-01-20 2006-01-20 Jacking device
PCT/JP2007/000009 WO2007083517A1 (en) 2006-01-20 2007-01-12 Jack device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006011971A JP4558654B2 (en) 2006-01-20 2006-01-20 Jacking device

Publications (2)

Publication Number Publication Date
JP2007192339A true JP2007192339A (en) 2007-08-02
JP4558654B2 JP4558654B2 (en) 2010-10-06

Family

ID=38287471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006011971A Expired - Fee Related JP4558654B2 (en) 2006-01-20 2006-01-20 Jacking device

Country Status (2)

Country Link
JP (1) JP4558654B2 (en)
WO (1) WO2007083517A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012020581A1 (en) * 2012-10-22 2014-04-24 Robert Bosch Gmbh Hydraulic circuit for a hydraulic axis and a hydraulic axis
DE102013227053B4 (en) * 2013-12-23 2023-04-20 Robert Bosch Gmbh hydraulic axis
CN106182867B (en) * 2016-07-11 2018-01-05 济南大学 A kind of device of continuously extruded dehydration Enteromorpha

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827339Y1 (en) * 1970-02-17 1973-08-11
JPS5310088U (en) * 1976-07-08 1978-01-27
JPS57184165U (en) * 1981-05-14 1982-11-22
JPS61162602U (en) * 1985-03-30 1986-10-08
JPH01109398U (en) * 1988-01-08 1989-07-24
JPH0217204A (en) * 1988-07-06 1990-01-22 Daiichi Denki Kk Integral drive source type hydraulic cylinder
JP2002147404A (en) * 2000-11-08 2002-05-22 Taiyo Ltd Fluid pressure cylinder device
JP2004337867A (en) * 2003-05-13 2004-12-02 Kawasaki Hydromechanics Corp Hydraulic press without oil tank
JP2004337869A (en) * 2003-05-13 2004-12-02 Kawasaki Hydromechanics Corp Pressurizing cylinder of hydraulic press
JP2004337868A (en) * 2003-05-13 2004-12-02 Kawasaki Hydromechanics Corp Forming method with hydraulic press
JP2006316800A (en) * 2005-05-10 2006-11-24 Osaka Jack Seisakusho:Kk Jack device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827339Y1 (en) * 1970-02-17 1973-08-11
JPS5310088U (en) * 1976-07-08 1978-01-27
JPS57184165U (en) * 1981-05-14 1982-11-22
JPS61162602U (en) * 1985-03-30 1986-10-08
JPH01109398U (en) * 1988-01-08 1989-07-24
JPH0217204A (en) * 1988-07-06 1990-01-22 Daiichi Denki Kk Integral drive source type hydraulic cylinder
JP2002147404A (en) * 2000-11-08 2002-05-22 Taiyo Ltd Fluid pressure cylinder device
JP2004337867A (en) * 2003-05-13 2004-12-02 Kawasaki Hydromechanics Corp Hydraulic press without oil tank
JP2004337869A (en) * 2003-05-13 2004-12-02 Kawasaki Hydromechanics Corp Pressurizing cylinder of hydraulic press
JP2004337868A (en) * 2003-05-13 2004-12-02 Kawasaki Hydromechanics Corp Forming method with hydraulic press
JP2006316800A (en) * 2005-05-10 2006-11-24 Osaka Jack Seisakusho:Kk Jack device

Also Published As

Publication number Publication date
JP4558654B2 (en) 2010-10-06
WO2007083517A1 (en) 2007-07-26

Similar Documents

Publication Publication Date Title
US10603709B2 (en) Die cushion device
CN104395064B (en) Machine press
CN106925653A (en) The method of die cushion and the control die cushion
JP5426833B2 (en) Molding machine
JP6899627B2 (en) Fluid circuits and machines with fluid circuits
JP6061161B2 (en) Hydraulic extruder and method of operating a hydraulic extruder
JP5524348B2 (en) Clamping device
JP2015520028A5 (en)
JP4558654B2 (en) Jacking device
JP2007506048A (en) Hydraulic control and adjustment system with volume equalization
CN104395018B (en) Injection device
CN110831750B (en) Device for controlling switching of hydraulic cylinder
CN102092126A (en) Device for activating a double action hydraulic piston of an injection moulding machine
JP2002178200A (en) High-speed press
JP2006316800A (en) Jack device
JP2008256029A (en) Jack device
CN106335210A (en) Device and method for controlling principal drive of precision cutting press
JP2011088167A (en) Hydraulic press
JP2020183806A (en) Hydrostatic linear drive system
JP2018523066A (en) Hydraulic device unit and method of operating hydraulic device unit
JP5822760B2 (en) Fluid pressure cylinder device
JP2575625Y2 (en) Hydraulic circuit device for large hydraulic press machine
JP6200953B2 (en) Device for controlling the movement of hydraulic cylinders, especially for hydraulic machines
WO2023210700A1 (en) Local pressurization device and molding machine
WO2024057384A1 (en) Hydraulic device and operation method

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091225

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100125

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100712

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100721

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130730

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees