EP0316500B1 - Dispositif de commande d'un piston logé dans un cylindre - Google Patents

Dispositif de commande d'un piston logé dans un cylindre Download PDF

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Publication number
EP0316500B1
EP0316500B1 EP87810677A EP87810677A EP0316500B1 EP 0316500 B1 EP0316500 B1 EP 0316500B1 EP 87810677 A EP87810677 A EP 87810677A EP 87810677 A EP87810677 A EP 87810677A EP 0316500 B1 EP0316500 B1 EP 0316500B1
Authority
EP
European Patent Office
Prior art keywords
valve
plate
cylinder
spaces
duct
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.)
Expired - Lifetime
Application number
EP87810677A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0316500A1 (fr
Inventor
Jean-Pierre Ramillon
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.)
Parker Hannifin Manufacturing Switzerland SA
Original Assignee
Honeywell Lucifer 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 Honeywell Lucifer SA filed Critical Honeywell Lucifer SA
Priority to ES87810677T priority Critical patent/ES2022451B3/es
Priority to DE8787810677T priority patent/DE3769476D1/de
Priority to EP87810677A priority patent/EP0316500B1/fr
Priority to AT87810677T priority patent/ATE62728T1/de
Priority to US07/264,359 priority patent/US4947733A/en
Priority to JP63290331A priority patent/JP2668254B2/ja
Publication of EP0316500A1 publication Critical patent/EP0316500A1/fr
Application granted granted Critical
Publication of EP0316500B1 publication Critical patent/EP0316500B1/fr
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
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0807—Manifolds

Definitions

  • a double-acting cylinder comprising a piston displaceable in a chamber closed at each end
  • the piston is controlled by a four-way valve, with two outlet orifices, arranged to alternately connect the spaces located on each side of the piston to a source of pressurized fluid and one or two exhaust lines that return fluid to a reservoir when it is oil.
  • the cylinder only comprises a space into which the fluid under pressure is sent. In this case, it is a single acting cylinder.
  • the space opposite to that intended to be pressurized communicates with the atmosphere and, under the effect of the reciprocating action of the piston, sucks in air then rejects it into the ambient air.
  • the piston being generally lubricated - even if the fluid, under pressure, is compressed air - the lubricant is therefore in contact with the ambient air, which cannot be accepted in certain fields of application, in particular in industries food, pharmaceutical, chemical, where it is absolutely necessary to avoid contamination of products with lubricant, even in infinitesimal quantities.
  • said space had to be closed and be connected to a pipe making it possible to recover the air and the oil vapors, which required a particular installation.
  • the invention aims to use a control device which can be easily adapted to single-acting cylinders or double-acting cylinders.
  • This object is achieved thanks to the fact that to allow, as desired, to communicate the other space, either alternately with the pressure source and with an exhaust pipe, or continuously with an exhaust pipe, the valve has a flat surface onto which the two outlet openings open, the valve also comprising an internal duct also opening onto this flat surface, this duct being connected to the exhaust pipe of the valve, means making it possible to connect the valve to the cylinder in two different positions for which one of said spaces is connected, either to the internal conduit of the valve, or to one of its outlet orifices, the latter means comprising an intermediate plate mechanically connecting the valve to the cylinder, this plate having passages extending from 'one of its faces to its other face to communicate the outlet ports of the valve with said spaces of the cylinder, the surface of the latter p resent a flat portion on which open two conduits leading respectively to each of said spaces, said plate being shaped so as to
  • Figure 1 schematically shows a four-way valve connected to a double-acting cylinder.
  • FIG. 2 is a similar view showing the position of the valve for controlling a displacement of a piston housed in the cylinder in the opposite direction to that given in FIG. 1.
  • Figures 3 and 4 are simplified views similar to Figures 1 and 2 in the case of a single-acting cylinder.
  • FIG. 5 shows in plan a plate having passages for communicating the outlet orifices of the valve with the spaces of the cylinder.
  • a slide valve comprises a body 1 in which a slide 2 can be moved by any suitable means acting on this slide.
  • This four-way valve conventionally has two outlet orifices 3 and 4 and an orifice 5 for admission of pressurized fluid.
  • the body 1 also has two exhaust channels 6 and 7, intended to be connected to a common exhaust pipe, not shown.
  • the channels 6 and 7 could be connected together by a passage provided in the body 1, so that the valve would have only one exhaust port to be connected to said pipe.
  • the inlet 5 is connected to the outlet 4 by the space 8, delimited by the two bearing surfaces 9 and 10 of the drawer, while the outlet 3 is connected to the channel 6 through the space 11 between the ranges 9 and 12. It should be noted that a channel 13 having an outlet orifice 14 also opens into the space 11.
  • the valve is intended to control the movements of a piston 15 displaceable inside a cylinder 16.
  • This piston 15 is integral with a rod 17 making it possible to transmit the movements of the piston to any external movable part.
  • the cylinder 16 also has a flat portion 18 and contains two conduits 19 and 20, intended to connect the outlet orifices 3 and 4 to the spaces 21 and 22, located on either side of the piston 15.
  • the plate 23 can occupy two different positions between the cylinder and the valve, so as to ensure different communications between the outlet orifices of the valve and the spaces 21 and 22.
  • the passage 26 of the plate 23 is unused, the spaces 21 and 22 being placed in communication with the orifices 3 and 4 of the valve by the passages 24 and 25 of the plate 23.
  • the valve occupies its other position in which the inlet port 5 communicates through the space 11 with the outlet 3, while the outlet 4 and the exhaust channel 7 are connected between them through the space 8 between the ranges 9 and 10.
  • the pressurized fluid is brought into the space 21, which pushes the piston 15 to the right, while in the case of Figure 1 the fluid under pressure was brought into the space 22 to move the piston 15 to the left.
  • the same elements can be used, as shown in FIGS. 3 and 4. Only the mounting position of the plate 23 is changed in the sense that it has been subjected to a 180 ° pivoting so that the side of this plate which was on the right of figure 1 comes to be placed on the left side.
  • the conduit 20 always communicates through the passage 25 of the plate with the outlet 4 of the valve.
  • the conduit 19 now communicates through the passage 26 with the outlet channel 13 of the valve, the outlet orifice 3 is now closed by the plate 23.
  • the passage 24 of the plate 23 is now unused.
  • the space 21 of the cylinder 16, which contains a return spring 29, is continuously in communication with the exhaust pipe, not shown, this communication being established by the pipe 19, the passage 26, the channel 13 , space 11 and channel 6.
  • the impurities which can be brought into space 21, for example the oil vapors which are always present in the case of a piston 15 controlled by air compressed are only in connection with the pipe exhaust not shown, the latter may be provided with a filter or be extended to lead to a space outside the room in which the cylinder 16 is used.
  • FIG. 3 shows the position of the valve in which the space 22 is connected to the orifice 5 for supplying pressurized fluid and FIG. 4 shows this space 22 connected to the exhaust orifice 7.
  • Figure 5 shows a possible embodiment of the plate 23. It is rectangular and has two holes 30 and 31 intended to be engaged on studs integral with either the flat portion 18 of the cylinder, or the face of the body 1 which has the outlet orifices 3 and 4, or of both at the same time. It is thus possible to place the plate in two positions offset by 180 °, the bore 30 coming to take the place of the bore 31 and vice versa.
  • the plate also has two holes 32 and 33, intended to communicate the outlet orifices 3 or 14 with the conduit 19, depending on the position given to the plate 23, the hole 38 communicating in the two positions with the conduit 20.
  • the hole 33 communicates with one end of a groove 34, formed in the face of the plate which must be in contact with the flat portion 18 of the cylinder 16, the other end of this groove being situated opposite the orifice 19
  • a seal 35 with multiple loops is provided on said face and surrounds the hole 32, the hole 38 and the hole 33 with the groove 34.
  • the seal 39 on the opposite face of the plate which must be in contact with the body 1 also has two portions 36 and 37, intended to close one of the orifices 3 or 14, depending on which direction the plate 23 is mounted.
  • the plate is provided on each of its faces with seals 35 and 39 to seal on the one hand with the orifices of the valve and on the other hand with the conduits 19 and 20.
  • the plate 23 it is advantageous for the plate 23 to carry means for locating its two positions, these means possibly being in particular visual or mechanical.

Landscapes

  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Fluid-Driven Valves (AREA)
  • Vehicle Body Suspensions (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Multiple-Way Valves (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Reciprocating Pumps (AREA)
EP87810677A 1987-11-19 1987-11-19 Dispositif de commande d'un piston logé dans un cylindre Expired - Lifetime EP0316500B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES87810677T ES2022451B3 (es) 1987-11-19 1987-11-19 Dispositivo de control de un piston alojado en un cilindro
DE8787810677T DE3769476D1 (de) 1987-11-19 1987-11-19 Steuereinrichtung fuer eine kolben-zylinder-einheit.
EP87810677A EP0316500B1 (fr) 1987-11-19 1987-11-19 Dispositif de commande d'un piston logé dans un cylindre
AT87810677T ATE62728T1 (de) 1987-11-19 1987-11-19 Steuereinrichtung fuer eine kolben-zylindereinheit.
US07/264,359 US4947733A (en) 1987-11-19 1988-10-31 Valve subplate for alternative double-acting or single-acting operation of cylinder
JP63290331A JP2668254B2 (ja) 1987-11-19 1988-11-18 シリンダ内のピストンの制御装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87810677A EP0316500B1 (fr) 1987-11-19 1987-11-19 Dispositif de commande d'un piston logé dans un cylindre

Publications (2)

Publication Number Publication Date
EP0316500A1 EP0316500A1 (fr) 1989-05-24
EP0316500B1 true EP0316500B1 (fr) 1991-04-17

Family

ID=8198431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87810677A Expired - Lifetime EP0316500B1 (fr) 1987-11-19 1987-11-19 Dispositif de commande d'un piston logé dans un cylindre

Country Status (6)

Country Link
US (1) US4947733A (ja)
EP (1) EP0316500B1 (ja)
JP (1) JP2668254B2 (ja)
AT (1) ATE62728T1 (ja)
DE (1) DE3769476D1 (ja)
ES (1) ES2022451B3 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005023791A1 (de) * 2005-05-19 2006-11-23 Norgren Gmbh Fluidische Steuereinrichtung und Verfahren zu ihrer Herstellung
CN101660656B (zh) * 2008-08-29 2012-05-02 北京中冶华润科技发展有限公司 双点供给阀式给油器
CN101876314A (zh) * 2009-12-22 2010-11-03 三一重工股份有限公司 一种工程机械及其多路同步润滑装置
EP4212741A1 (de) 2022-01-18 2023-07-19 Asco Numatics GmbH Vorrichtung und verfahren zur steuerung und regelung von fluidströmen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US752472A (en) * 1904-02-16 Valve mechanism
US1604587A (en) * 1925-04-30 1926-10-26 Grover C Knight Fluid-pressure engine and control mechanism therefor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218938A (en) * 1963-12-26 1965-11-23 Elliott Brothers London Ltd Control fault veto
US3550621A (en) * 1968-08-20 1970-12-29 Parker Hannifin Corp Fluid distributing manifold for directional control valve
BE790699A (fr) * 1971-11-04 1973-02-15 Hydraulique B G Perfectionnements aux dispositifs de telecommande electrohydraulique dedistributeurs a tiroir
DE2259294C3 (de) * 1972-12-04 1979-01-04 Robert Bosch Gmbh, 7000 Stuttgart Hydraulische Einrichtung zum Steuern einer Anlage mit wenigstens einem Verbraucher
DE7326731U (de) * 1973-07-20 1976-10-07 Fischer, Artur, 7244 Waldachtal Hydraulik und/oder Pneumatikventil, vorzugsweise als Bauteil eines Konstruktionsbaukastens
JPS5213083A (en) * 1975-07-21 1977-02-01 Teijin Seiki Co Ltd Fuel safe-servo control valve
DE2933704A1 (de) * 1979-08-21 1981-03-26 Festo Kg, 73734 Esslingen Druckmittelverbindung zwischen einem ventilblock und einem zumindest einen doppelt wirkenden druckmittelmotor aufweisenden verbraucher

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US752472A (en) * 1904-02-16 Valve mechanism
US1604587A (en) * 1925-04-30 1926-10-26 Grover C Knight Fluid-pressure engine and control mechanism therefor

Also Published As

Publication number Publication date
EP0316500A1 (fr) 1989-05-24
DE3769476D1 (de) 1991-05-23
ES2022451B3 (es) 1991-12-01
JP2668254B2 (ja) 1997-10-27
JPH02138504A (ja) 1990-05-28
ATE62728T1 (de) 1991-05-15
US4947733A (en) 1990-08-14

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