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EP0360718A1 - Pilot-operated regulating connector for regulating the speed of pneumatic actuators - Google Patents

Pilot-operated regulating connector for regulating the speed of pneumatic actuators 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
German (de)
French (fr)
Other versions
EP0360718B1 (en
Inventor
Yves Levenez
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Legris SA
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Legris SA
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Publication date
Application filed by Legris SA filed Critical Legris SA
Publication of EP0360718A1 publication Critical patent/EP0360718A1/en
Application granted granted Critical
Publication of EP0360718B1 publication Critical patent/EP0360718B1/en
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.

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

Abstract

Raccord-règleur piloté permettant deux vitesses différentes dans une même course d'un vérin pneumatique à double effet. En l'absence de signal de pilotage à l'orifice 13 de l'appareil,la pression d'échappement en provenance du vérin 30 effectuant sa course de sortie de tige,trouve le clapet de retour 14 fermé et maintient le piston 2 contre la butée 9 dont le règlage détermine un premier débit entre le pointeau 15 à l'extrêmité du piston et son siège 16,débit correspondant à la grande vitesse.L'arrivée d'un signal de pression dans la chambre 6 déplace le piston 2 jusqu'à buter sur une seconde vis 7 dont le règlage permet un second débit plus faible que le premier et qui détermine ainsi la seconde vitesse.Le clapet de retour 14 s'ouvre au débit d'admission traversant à rebours l'appareil en direction du vérin dans sa course inverse,et le signal de pilotage ayant disparu,cette pression repousse le piston 2 en position de grande vitesse. Application aux techniques pneumatiques.Pilot-operated adjuster allowing two different speeds in the same stroke of a double-acting pneumatic cylinder. In the absence of a pilot signal at the orifice 13 of the device, the exhaust pressure coming from the jack 30 carrying out its rod exit stroke, finds the return valve 14 closed and keeps the piston 2 against the stop 9 whose adjustment determines a first flow between the needle 15 at the end of the piston and its seat 16, flow corresponding to the high speed. The arrival of a pressure signal in the chamber 6 moves the piston 2 up to to be stuck on a second screw 7, the adjustment of which allows a second lower flow than the first and which thus determines the second speed. The return valve 14 opens at the admission flow through the device in reverse direction towards the jack in its reverse stroke, and the piloting signal having disappeared, this pressure pushes the piston 2 back into the high speed position. Application to pneumatic techniques.

Description

La vitesse d'un vérin pneumatique à double effet se règle pour chaque sens de course à l'aide d'un limiteur de débit unidirectionnel placé entre l'orifice du vérin par lequel s'échappe l'air pendant la course règlée et son distributeur d'alimentation.Un tel appareil,encore appelé règleur,comporte une vis de règlage solidaire d'un pointeau pour limiter à volonté le débit d'air d'échappement à travers son siège qui détermine ainsi la vitesse du vérin.Pour permettre dans l'autre sens de course, l'admission à plein débit du fluide moteur dans cette meme chambre,le règleur comporte en outre un clapet unidirectionnel s'ouvrant dans le sens du débit d'admission et se fermant dans le sens du débit d'échappe­ment.Les règleurs classiques ne permettent qu'une seule vitesse règlée pour un sens de course du vérin,vitesse qui s'établit dès le départ et reste constante.Or,dans un grand nombre de cas de figure,on aimerait disposer pendant chaque course et sur commande,de deux vitesses de va­leurs différentes,ce qui aurait pour effet d'augmenter les cadences tout en évitant les chocs de fin de course,ou encore d'obtenir facilement une vitesse rapide d'un outil suivi d'une vitesse de travail plus lente. La présente invention permet d'atteindre ce but,par la réalisation de règleurs à deux vitesses,le passage d'une vitesse à une seconde vitesse règlée plus faible s'effectuant par l'arrivée dans l'appareil d'un signal pneumatique de pilotage,et l'opération inverse par la disparition de ce signal.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. 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. In many cases, we would like to have during each race and on order e, of two speeds of different values, which would have the effect of increasing the cadences while avoiding impact at the end of the stroke, or even easily obtaining a rapid speed of a tool followed by a higher working speed slow. 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.

Selon l'invention un raccord-règleur piloté comporte trois orifices raccordables;le premier à un des orifices du vérin par lequel sort l'air dans le sens de course dont on veut règler la vitesse;le second à l'orifi­ce correspondant du distributeur et le troisième à une tuyauterie de pilo­tage.L'air s'échappant du vérin pendant la course s'écoule du premier au second orifice et son débit à travers un siège est fonction de la position d'un pointeau qui en controle le passage.Ce pointeau est formé par l'extrèmité d'un piston coulissant de façon étanche par un joint dans son logement cylindrique,et qui peut être soumis,sur sa face oppo­sée au pointeau,à la pression d'un signal de provenance extérieure.Ce signal a pour effet de déplacer le piston en direction du siège,et cette course étant limitée par l'extrèmité interne d'une vis manoeu­vrable de l'extérieur sur laquelle il vient buter par son extrèmité pointeau,le débit laissé à l'air d'échappement traversant l'appareil ,et donc la vitesse du vérin,dépend ainsi du règlage de cette vis.According to the invention 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.

Dans cette version simplifiée de l'appareil,en l'absence de signal de pilotage,la pression traversant le règleur dans un sens ou dans l'autre repousse le piston en pleine ouverture du siège et un tel appareil ne permet qu'une seule vitesse règlée introduite par un signal de pilo­tage.Dans les versions préférentielles d'application de l'invention, la course du piston en ouverture du siège peut également être limitée par une seconde vis de règlage opposée à la première,sur laquelle il vient buter par son extrèmité opposée au pointeau:cette seconde vis règlant une vitesse de vérin toujours plus élevée que celle règlée par la première qui détermine le passage à travers le siège en présence d'un signal de pilotage.Pour permettre alors le plein débit d'admission vers le vérin dans sa course inverse,débit traversant le règleur en sens contraire à celui des débits d'échappement contrôlés,un clapet de retour est disposé en dérivation du siège pour s'ouvrir dans le sens de l'admission d'air vers le vérin et se fermer dans le sens du débit de purge en provenant.In this simplified version of the device, in the absence of a pilot signal, the pressure passing through the adjuster in one direction or the other pushes the piston when the seat is fully open and such an device allows only one speed In the preferred application versions of the invention, 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. To then allow the full admission flow to the cylinder in its reverse stroke, flow passing through the regulator in the opposite direction to that of the controlled exhaust flows, 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.

D'autres caractèristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre de plusieurs modes de réalisation préférentielle et en se référant aux dessin annexés.Other characteristics and advantages of the invention will be better understood on reading the description which follows of several preferred embodiments and with reference to the accompanying drawings.

La Fig 1 est une vue en coupe d'un raccord-règleur piloté,et son mon­tage permettant d'obtenir deux vitesses différentes de la sortie de tige d'un vérin.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.

Suivant la Fig 1,le règleur piloté comporte dans un corps I,un piston 2 glissant dans un logement cylindrique de façon étanche par un joint 3, et dont une extrèmité forme un pointeau 15 coopérant avec un siège 16 pour contrôler un débit de fluide venant d'une première chambre 4 vers une seconde chambre 5.La première chambre 4 est délimitée par le siège 16,un clapet unidirectionnel annulaire 14 établi en dérivation dudit siège,le joint 8 d'une vis de règlage 7 ,et par un orifice de raccorde­ment 11.La seconde chambre 5 est délimitée par le siège 16,le clapet 14 le joint 3 du piston 2 et un orifice raccordable 12.Le clapet 14 est orienté de façon à se fermer au débit de fluide s'écoulant de la cham­bre 4 vers la chambre 5 et à s'ouvrir en sens inverse.L'appareil compor­te également une troisième chambre 6 délimitée par le joint 3 du pis­ton 2,un bouchon 1a fermant le logement dudit piston,le joint 10 d'une vis de règlage 9 dans le bouchon 1a et un orifice raccordable 13. Tel que représenté suivant la Fig 1,le règleur piloté règle la petite vitesse de sortie de tige d'un vérin 30,par l'effet d'un signal de pilo­tage émis par un capteur 50.L'air en provenance de la chambre du verin en purge coté tige,s'écoule dans le règleur de son orifice 11à son ori­fice 12,ferme le clapet 14 à son propre passage qui ne peut se faire qu'à travers le siège 16 avec un débit fonction de la position du poin­teau 15.La chambre 6 étant sous pression,le piston 2 est poussé en bu­tée sur l'extrèmité interne 7a de la vis 7 qui traverse le siège 16 pour pénétrer dans un canal axial borgne du piston 2 et en améliorer le guidage.En présence du signal de pilotage,la vitesse du vérin 30 est donc règlée par la vis 7.En l'absence de ce signal,le piston 2 est maintenu en position d'ouverture du siège 16 par l'effet de la pression traversant l'appareil dans la chambre 5.Le passage laissé au débit d'échappement à travers le siège 16 est alors fonction du règlage de la vis 9 sur l'extrèmité interne de laquelle vient buter le piston 2 par sa face opposée au pointeau 15.La vis 9 règle donc une vitesse de vérin toujours supérieure à celle règlée par la vis 7.Le vérin effectuant sa course inverse,l'air d'admission traversant le règleur de l'orifice 12 à l'orifice 11 ouvre le clapet 14 et le plein débit est ainsi assuré, que le signal de pilotage soit présent ou non à l'orifice 13 et indépen­damment du règlage des vis 7 et 9.Le capteur 50 peut etre manoeuvré soit manuellement,soit par la tige du vérin 30 lui-même ou celle d'un autre vérin.Le signal peut également provenir de diverses sources, comme un temporisateur, le départ d'un autre vérin,séquenceur etc... Il peut n'être émis que pour certaines séquences de fonctionnement du vérin dans le cycle.According to Fig 1, 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. As shown in FIG. 1, 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. 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 jack carrying out its reverse stroke, the intake air passing through the adjuster from the orifice 12 to the orifice 11 opens the valve 14 and full flow is thus ensured, whether the piloting signal is present or not at the orifice 13 and independently of the adjustment of the screws 7 and 9. 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.

La Fig 2 est la représentation en coupe d'une autre réalisation de l'invention qui se différencie essentiellement de la réalisation précé­demment décrite suivant la Fig 1,par son piston 2 qui comporte deux sec­tions différentes définies par les joints 3 et 3a qu'il porte.Le joint 3e de plus grand diamètre que celui du joint 3 est soumis à la pression du signal dans la chambre 6;cette disposition permettant un signal de pilotage de pression éventuellement faible.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.

La Fig 3 est la représentation en coupe d'une autre réalisation de l'in­vention qui,comme la réalisation précédemment décrite suivant la Fig 2, comporte un piston étagé 2 succeptible de se déplacer sous l'effet d'une faible pression de pilotage.Suivant la Fig 3,le pointeau 15 du piston 2 se prolonge par une tige 2a de faible diamêtre qui traverse le siège 16 et comporte à son extrèmité une section de piston définie par son joint 3b plus faible que celle du siège et que celle de la grande section du piston définie par le joint 3.La pression traversant l'appareil agit sur le piston 2 dans le sens de l'ouverture du siège 16 avec une force résultant de la différence des sections 3-3b,tandis que la pression antagoniste du signal agit sur la pleine section 3.Suivant cette disposition également,la vis de règlage 7 de la petite vitesse sur l'extremité interne de laquelle vient buter le piston 2 par sa petite section,ne comporte aucun joint.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. According to Fig 3, 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. Also following this arrangement, the low speed adjusting screw 7 on the internal end of which abuts the piston 2 by its small section, has no seal.

La Fig 4 est la représentation en coupe d'une autre réalisation d'un raccord-règleur piloté à deux vitesse conforme à l'invention.Suivant la Fig 4 et à l'inverse de la disposition retenue dans les réalisations décrites suivant les Fig 1,2 et 3,la disposition du piston 2 est ici telle qu'il tend à la fermeture du siège 16 dans le sens du débit de l'air d'échappement,c'est-à-dire de la chambre 4 à la chambre 5:cette disposition est plus spécialement applicable dans des appareils de faible encombrement.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.

Suivant les Fig 1,2,3 et 4,la vis de règlage 7 de la petite vitesse comporte un pas de vis à gauche et la vis de règlage 9 de la grande vitesse,un pas de vis à droite.According to Figs 1,2,3 and 4, 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.

Suivant les Fig 1,2;3,et 4,les orifices 11,12 et 13 sont équipés de cartouches de raccordement instantanés 11a,12a et 13a.According to Figs 1,2, 3, and 4, the orifices 11,12 and 13 are fitted with instantaneous connection cartridges 11a, 12a and 13a.

Bien entendu,la présente invention n'est pas limitative et l'homme de l'art pourra y apporter des modifications sans sortir pour cela du domaine de l'invention.Of course, the present invention is not limiting and those skilled in the art can make modifications to it without departing from the scope of the invention.

Claims (7)

1- Raccord-règleur piloté pour le règlage de vitesse des vérins pneu­matiques se montant entre le vérin et son distributeur, caractèrisé en ce qu'il comporte un piston(2) évoluant axialement dans un logement cylindrique du corps(1) de l'appareil et dont une extrèmité forme un pointeau(15) coopérant avec son siège(16) pour contrôler le passage du fluide d'une première chambre (4) délimitée par un orifice(11) rac­cordable au vérin(30) et ledit siège vers une seconde chambre(5) déli­mitée par ledit siège et un orifice(12) raccordable au distributeur(40); le piston(2) comporte au moins un joint(3) lui assurant un glissement étanche et qui délimite une troisième chambre(6)avec un orifice(13) de raccordement à une tuyauterie par laquelle arrive un signal de pression agissant sur la face du piston(2) opposée au pointeau(15) et l'entrai­nant vers la fermeture du siège(16);la course du piston(2) en fermeture du siège(16) est déterminée par une butée règlable axialement en position de l'extérieur et sur laquelle il vient buter par son extrèmité coté pointeau(15).1- Pilot-operated adjuster for speed adjustment of pneumatic cylinders mounted between the cylinder and its distributor, characterized in that it comprises a piston (2) moving axially in a cylindrical housing of the body (1) of the device and one end of which forms a needle (15) cooperating with its seat (16) to control the passage of the fluid from a first chamber (4) delimited by an orifice (11) connectable to the jack (30) and said seat to a second chamber (5) delimited by said seat and an orifice (12) connectable to the distributor (40); the piston (2) comprises at least one seal (3) ensuring a tight sliding and which delimits a third chamber (6) with an orifice (13) for connection to a pipe through which a pressure signal acting on the face of the piston (2) opposite the needle (15) and driving it towards the closing of the seat (16); the stroke of the piston (2) in closing of the seat (16) is determined by an axially adjustable stop in position from the outside and on which it comes up against its end on the needle side (15). 2- Raccord-règleur piloté selon la revendication 1,caractèrisé en ce que la butée limitant la course du piston(2) en fermeture du siège(16) est constitué d'une vis(7) coaxiale au piston,se vissant dans le corps (1) de façon étanche par un joint torique(8) , se prolongeant par une tige(7a) en direction du pointeau(15)et sur l'extrèmité libre de laquelle vient buter le piston(2) dans sa course de fermeture.2- pilot-controlled fitting according to claim 1, characterized in that the stop limiting the stroke of the piston (2) when closing the seat (16) consists of a screw (7) coaxial with the piston, screwed into the body (1) in a leaktight manner by an O-ring (8), extended by a rod (7a) in the direction of the needle (15) and on the free end of which the piston (2) abuts in its closing stroke. 3- Raccord-règleur piloté selon les revendications 1 et 2,caractèrisé en ce que le piston(2) est un piston étagé présentant deux sections différentes chacune équipée d'un joint torique;la petite section définie par le joint(3)du coté du pointeau(15) est soumise à la pression tra­versant l'appareil de l'un à l'autre des orifices(11)et(12),et la plus grande section definie par le joint(3a) à la pression du signal de pilotage dans la chambre (6).3- Pilot-controlled fitting according to claims 1 and 2, characterized in that the piston (2) is a stepped piston having two different sections each equipped with an O-ring; the small section defined by the seal (3) on the side of the needle (15) is subjected to the pressure passing through the apparatus from one to the other of the orifices (11) and (12), and the largest section defined by the seal (3a) to the pressure of the signal of piloting in the room (6). 4- Raccord-règleur piloté selon la revendication 1,caractèrisé en ce que le pointeau(15) du piston(2) se prolonge au dela du siège(16) par une tige(2a) de faible diamètre solidaire à son extrèmité d'une section plus faible que celle du siège(16) et que celle de la section équipée du joint(3);cette petite section,soumise à la pression dans la chambre (4) coulisse de façon étanche par un joint torique(3b) dans un logement cylindrique du corps(1) de l'appareil.La course du piston(2) en ferme­ture du siège(16) par le pointeau(15) est limitée par butée de ladite section(3b) sur l'extrèmité interne d'une vis de règlage(7) dans le pro­longement de son logement cylindrique.4- Pilot-operated adjuster according to claim 1, characterized in that the needle (15) of the piston (2) extends beyond the seat (16) by a rod (2a) of small diameter secured at its end to a section smaller than that of the seat (16) and that of the section equipped with the seal (3); this small section, subjected to pressure in the chamber (4) slides in leaktight manner by an O-ring (3b) in a cylindrical housing of the body (1) of the apparatus. The stroke of the piston (2) in closing the seat (16) by the needle (15) is limited by abutment of said section (3b) on the internal end of a adjusting screw (7) in the extension of its cylindrical housing. 5- Raccord-règleur piloté selon l'une des revendications 1,2,3 et 4, caractèrisé en ce que la course du piston(2) en ouverture du siège(16) est déterminée par la position de l'extrémité interne à la chambre(6) d'une vis(9) réglable de l'extérieur et se vissant de façon étanche par un joint torique(10) dans un bouchon(1a)solidaire du corps(1) de l'­appareil.Le piston(2) vient buter par son extrèmité opposée au poin­teau(15) sur l'extrèmité interne de la vis(9)par l'effet de la pression dans la chambre(5) et en l'absence de pression dans la chambre(6).L'ap­pareil comporte un clapet unidirectionnel(14) établi en dérivation du siège(16),s'ouvrant au passage du fluide de l'orifice(12) vers l'ori­fice(11) et se fermant en sens inverse.5- pilot-controlled fitting according to one of claims 1,2,3 and 4, characterized in that the stroke of the piston (2) in opening the seat (16) is determined by the position of the end internal to the chamber (6) of a screw (9) adjustable from the outside and screwed tightly by an O-ring (10) in a plug (1a) secured to the body (1) of the device. ) abuts by its end opposite the needle (15) on the internal end of the screw (9) by the effect of the pressure in the chamber (5) and in the absence of pressure in the chamber (6). The apparatus comprises a one-way valve (14) established in derivation of the seat (16), opening to the passage of the fluid from the orifice (12) towards the orifice (11) and closing in the opposite direction. 6- Raccord-règleur piloté selon l'une des revendications 2,4 et 5, carac­tèrisé en ce que la vis 7 de règlage de la course du piston(2) en fer­meture du siège(16) comporte un pas de vis à gauche.6- Pilot-controlled fitting according to one of claims 2,4 and 5, characterized in that the screw 7 for adjusting the stroke of the piston (2) in closing the seat (16) has a thread on the left. 7- Raccord-règleur piloté selon la revendication 1,caractèrisé en ce que les orifices(11,12,13) de branchement de l'appareil à l'aide de tuyauteries sont équipés de cartouches(11a,12a,13a) de raccordement instantané.7- Pilot-operated fitting-adjuster according to claim 1, characterized in that the orifices (11,12,13) for connecting the device using pipes are fitted with cartridges (11a, 12a, 13a) for instant connection .
EP89460027A 1988-09-16 1989-09-13 Pilot-operated regulating connector for regulating the speed of pneumatic actuators Expired - Lifetime EP0360718B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812409A FR2637326B1 (en) 1988-09-16 1988-09-16 PILOT ADJUSTER-ADJUSTER FOR SPEED ADJUSTMENT OF PNEUMATIC CYLINDERS
FR8812409 1988-09-16

Publications (2)

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EP0360718A1 true EP0360718A1 (en) 1990-03-28
EP0360718B1 EP0360718B1 (en) 1992-12-23

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EP89460027A Expired - Lifetime EP0360718B1 (en) 1988-09-16 1989-09-13 Pilot-operated regulating connector for regulating the speed of pneumatic actuators

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

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DE102004061630C5 (en) * 2004-12-17 2015-12-24 Dorma Deutschland Gmbh Door drive, in particular swing door drive
GB201113017D0 (en) * 2011-07-28 2011-09-14 Ge Healthcare Bio Sciences Ab Improvements in and relating to fluid sample holders
US10927858B2 (en) 2016-06-22 2021-02-23 Aladdin Engineering And Manufacturing, Inc. Valve system for pneumatic cylinders
US9903487B2 (en) * 2016-06-22 2018-02-27 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 (en) * 2019-03-25 2020-06-26 浙江大学宁波理工学院 Three-degree-of-freedom electro-hydraulic control type micro-excitation system
CN114578091B (en) * 2022-05-06 2022-08-23 河南氢枫能源技术有限公司 Hydrogenation flow regulation detection device

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Also Published As

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

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