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EP0360718A1 - Vorgesteuertes regulierbares Verbindungsstück für die Regulation der Geschwindigkeit pneumatischer Zylinder - Google Patents

Vorgesteuertes regulierbares Verbindungsstück für die Regulation der Geschwindigkeit pneumatischer Zylinder Download PDF

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Publication number
EP0360718A1
EP0360718A1 EP89460027A EP89460027A EP0360718A1 EP 0360718 A1 EP0360718 A1 EP 0360718A1 EP 89460027 A EP89460027 A EP 89460027A EP 89460027 A EP89460027 A EP 89460027A EP 0360718 A1 EP0360718 A1 EP 0360718A1
Authority
EP
European Patent Office
Prior art keywords
piston
seat
pilot
needle
chamber
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
EP89460027A
Other languages
English (en)
French (fr)
Other versions
EP0360718B1 (de
Inventor
Yves Levenez
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.)
Legris SA
Original Assignee
Legris SA
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 Legris SA filed Critical Legris SA
Publication of EP0360718A1 publication Critical patent/EP0360718A1/de
Application granted granted Critical
Publication of EP0360718B1 publication Critical patent/EP0360718B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/7888—With valve member flexing about securement
    • Y10T137/789—Central mount
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87499—Fluid actuated or retarded
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87539—Having guide or restrictor

Definitions

  • the speed of a double-acting pneumatic cylinder is adjusted for each direction of travel using a one-way flow limiter placed between the orifice of the cylinder through which air escapes during the regulated stroke and its distributor.
  • a one-way flow limiter placed between the orifice of the cylinder through which air escapes during the regulated stroke and its distributor.
  • Such a device also called an adjuster, includes an adjusting screw integral with a needle to limit at will the flow of exhaust air through its seat which thus determines the speed of the jack. '' other direction of travel, the admission to full flow of the working fluid in this same chamber, the adjuster further comprises a one-way valve opening in the direction of the intake flow and closing in the direction of the exhaust flow .
  • the classic adjusters allow only one speed set for a direction of travel of the cylinder, speed which is established from the start and remains constant.
  • the present invention makes it possible to achieve this object, by producing two-speed regulators, the passage from one speed to a second regulated lower speed being effected by the arrival in the device of a pneumatic piloting signal. , and the reverse operation by the disappearance of this signal.
  • a piloted connection-regulator comprises three connectable orifices; the first to one of the orifices of the jack through which the air leaves in the direction of travel whose speed is to be regulated; the second to the corresponding orifice of the distributor and the third to a pilot piping.
  • the air escaping from the jack during the race flows from the first to the second orifice and its flow through a seat is a function of the position of a needle which controls its passage.
  • needle is formed by the end of a piston sliding in leaktight manner by a seal in its cylindrical housing, and which can be subjected, on its face opposite the needle, to the pressure of a signal from outside.
  • This signal has the effect of moving the piston towards the seat, and this stroke being limited by l 'internal end of a screw maneuverable from the outside on which it comes up against its needle end, the flow rate left to the exhaust air passing through the device, and therefore the speed of the jack, thus depends on the adjustment of this screw.
  • the stroke of the piston in opening the seat can also be limited by a second adjusting screw opposite the first, on which it abuts by its opposite end of the needle: this second screw regulating a cylinder speed always higher than that regulated by the first which determines the passage through the seat in the presence of a piloting signal.
  • a return valve is arranged in bypass of the seat to open laugh in the direction of air intake to the cylinder and close in the direction of the purge flow coming from it.
  • Fig 1 is a sectional view of a piloted fitting-adjuster, and its mounting making it possible to obtain two different speeds from the rod outlet of a jack.
  • the piloted adjuster comprises in a body I, a piston 2 sliding in a cylindrical housing in a sealed manner by a seal 3, and one end of which forms a needle 15 cooperating with a seat 16 to control a flow of fluid coming from a first chamber 4 to a second chamber 5.
  • the first chamber 4 is delimited by the seat 16, an annular unidirectional valve 14 established in derivation of said seat, the joint 8 of an adjusting screw 7, and by an orifice connection 11.
  • the second chamber 5 is delimited by the seat 16, the valve 14 the seal 3 of the piston 2 and a connectable orifice 12.
  • the valve 14 is oriented so as to close at the flow of fluid flowing from the chamber 4 towards chamber 5 and to be opened in the opposite direction.
  • the apparatus also comprises a third chamber 6 delimited by the seal 3 of the piston 2, a plug 1a closing the housing of said piston, the seal 10 of an adjusting screw 9 in plug 1a and a rac opening cordable 13.
  • the piloted regulator regulates the low rod exit speed of a jack 30, by the effect of a piloting signal emitted by a sensor 50.
  • the air coming from the chamber of the cylinder in purge on the rod side flows into the adjuster from its orifice 11 to its orifice 12, closes the valve 14 on its own passage which can only be done through the seat 16 with a flow rate depending on the position of the needle 15.
  • the chamber 6 is under pressure, the piston 2 is pushed into abutment on the internal end 7a of the screw 7 which passes through the seat 16 to penetrate into a blind axial channel of the piston 2 and to improve its guidance. presence of the control signal, the speed of the jack 30 is therefore regulated by the screw 7.
  • the piston 2 In the absence of this signal, the piston 2 is held in the open position of the seat 16 by the effect of the pressure passing through the device in the chamber 5.
  • the passage left to the exhaust flow through the seat 16 is then fo nction of the adjustment of the screw 9 on the internal end of which abuts the piston 2 by its face opposite to the needle 15.
  • the screw 9 therefore regulates a jack speed always greater than that regulated by the screw 7.
  • the sensor 50 can be operated either manually or by rod of cylinder 30 itself or that of another cylinder.
  • the signal can also come from various sources, such as a timer, the departure of another cylinder, sequencer, etc. It may only be sent for certain cylinder operating sequences in the cycle.
  • Fig 2 is the sectional representation of another embodiment of the invention which differs essentially from the embodiment previously described according to Fig 1, by its piston 2 which has two different sections defined by the seals 3 and 3a which it The gasket 3e of larger diameter than that of the gasket 3 is subjected to the pressure of the signal in the chamber 6; this arrangement allowing a signal of piloting of possibly low pressure.
  • Fig 3 is the sectional representation of another embodiment of the invention which, like the embodiment previously described according to Fig 2, comprises a stepped piston 2 capable of moving under the effect of a low pilot pressure.
  • the needle 15 of the piston 2 is extended by a rod 2a of small diameter which passes through the seat 16 and comprises at its end a piston section defined by its seal 3b weaker than that of the seat and that of the large section of the piston defined by the seal 3.
  • the pressure passing through the device acts on the piston 2 in the direction of the opening of the seat 16 with a force resulting from the difference in sections 3-3b, while the opposing pressure of the signal acts on the full section 3.
  • the low speed adjusting screw 7 on the internal end of which abuts the piston 2 by its small section has no seal.
  • Fig 4 is a sectional representation of another embodiment of a two-speed pilot-operated fitting according to the invention. Following Fig 4 and unlike the arrangement used in the embodiments described according to Fig 1 , 2 and 3, the arrangement of the piston 2 is here such that it tends to close the seat 16 in the direction of the flow of the exhaust air, that is to say from the chamber 4 to the chamber 5: this provision is more particularly applicable in devices of small size.
  • the adjusting screw 7 of the low speed has a screw pitch on the left and the adjusting screw 9 of the high speed, a screw pitch on the right.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Fluid-Driven Valves (AREA)
  • Lift Valve (AREA)
  • Actuator (AREA)
EP89460027A 1988-09-16 1989-09-13 Vorgesteuertes regulierbares Verbindungsstück für die Regulation der Geschwindigkeit pneumatischer Zylinder Expired - Lifetime EP0360718B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812409 1988-09-16
FR8812409A FR2637326B1 (fr) 1988-09-16 1988-09-16 Raccord-regleur pilote pour le reglage de vitesse des verins pneumatiques

Publications (2)

Publication Number Publication Date
EP0360718A1 true EP0360718A1 (de) 1990-03-28
EP0360718B1 EP0360718B1 (de) 1992-12-23

Family

ID=9370280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89460027A Expired - Lifetime EP0360718B1 (de) 1988-09-16 1989-09-13 Vorgesteuertes regulierbares Verbindungsstück für die Regulation der Geschwindigkeit pneumatischer Zylinder

Country Status (7)

Country Link
US (1) US5097747A (de)
EP (1) EP0360718B1 (de)
JP (1) JPH03501996A (de)
DE (1) DE68904028T2 (de)
ES (1) ES2036366T3 (de)
FR (1) FR2637326B1 (de)
WO (1) WO1990002883A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012032298A1 (en) * 2010-09-11 2012-03-15 Bifold Fluidpower Limited A flow control device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3778634B2 (ja) 1996-11-22 2006-05-24 Ｓｍｃ株式会社 パイロットチェック弁付スピードコントローラ
DE102004061630C5 (de) * 2004-12-17 2015-12-24 Dorma Deutschland Gmbh Türantrieb, insbesondere Drehtürantrieb
GB201113017D0 (en) * 2011-07-28 2011-09-14 Ge Healthcare Bio Sciences Ab Improvements in and relating to fluid sample holders
US9903487B2 (en) * 2016-06-22 2018-02-27 Aladdin Engineering And Manufacturing, Inc. Valve system for pneumatic cylinders
US10927858B2 (en) 2016-06-22 2021-02-23 Aladdin Engineering And Manufacturing, Inc. Valve system for pneumatic cylinders
US10480542B2 (en) 2016-06-22 2019-11-19 Aladdin Engineering And Manufacturing, Inc. Valve system for pneumatic cylinders
CN109883639B (zh) * 2019-03-25 2020-06-26 浙江大学宁波理工学院 三自由度电液控制式微激振系统
CN114578091B (zh) * 2022-05-06 2022-08-23 河南氢枫能源技术有限公司 一种加氢流量调节检测装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090398A (en) * 1962-02-05 1963-05-21 American Brake Shoe Co Dual direction relief or sequence type valve
FR2343280A1 (fr) * 1976-03-05 1977-09-30 Bouteille Daniel Limiteur de debit unidirectionnel
FR2363015A1 (fr) * 1976-08-25 1978-03-24 Shoketsu Kinzoku Kogyo Kk Soupape de regulation
GB2032581A (en) * 1978-10-24 1980-05-08 Mac Valves Inc Combined pressure reducer and flow control valve

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132153A (en) * 1976-11-09 1979-01-02 Phd, Inc. Metering control valve and fluid power system
US4073311A (en) * 1976-12-10 1978-02-14 Numatics, Incorporated Flow control valve
FR2481480A1 (fr) * 1980-04-23 1981-10-30 Legris Perfectionnement aux dispositifs regulateurs de debit et de pression de fluides gazeux
JPS578968U (de) * 1980-06-18 1982-01-18
US4619287A (en) * 1982-10-06 1986-10-28 Nihon Pisuko Kabushiki Kaisha Valves proper for valve-type fluid-flow controllers
FR2544403B1 (fr) * 1983-04-12 1985-08-09 Legris Dispositif economiseur automatique d'air comprime
US4601366A (en) * 1983-04-22 1986-07-22 Blain Roy W Down valve for the down speed control of a hydraulic elevator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090398A (en) * 1962-02-05 1963-05-21 American Brake Shoe Co Dual direction relief or sequence type valve
FR2343280A1 (fr) * 1976-03-05 1977-09-30 Bouteille Daniel Limiteur de debit unidirectionnel
FR2363015A1 (fr) * 1976-08-25 1978-03-24 Shoketsu Kinzoku Kogyo Kk Soupape de regulation
GB2032581A (en) * 1978-10-24 1980-05-08 Mac Valves Inc Combined pressure reducer and flow control valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012032298A1 (en) * 2010-09-11 2012-03-15 Bifold Fluidpower Limited A flow control device

Also Published As

Publication number Publication date
WO1990002883A1 (fr) 1990-03-22
FR2637326B1 (fr) 1992-10-16
US5097747A (en) 1992-03-24
JPH03501996A (ja) 1991-05-09
ES2036366T3 (es) 1993-05-16
DE68904028T2 (de) 1993-05-06
EP0360718B1 (de) 1992-12-23
DE68904028D1 (de) 1993-02-04
FR2637326A1 (fr) 1990-04-06

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