EP1357298B1 - Distributeur d'actionnement pour un vérin pneumatique à double effet - Google Patents

Distributeur d'actionnement pour un vérin pneumatique à double effet Download PDF

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Publication number
EP1357298B1
EP1357298B1 EP03008338.0A EP03008338A EP1357298B1 EP 1357298 B1 EP1357298 B1 EP 1357298B1 EP 03008338 A EP03008338 A EP 03008338A EP 1357298 B1 EP1357298 B1 EP 1357298B1
Authority
EP
European Patent Office
Prior art keywords
valve
chamber
valves
compressed air
channel
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
EP03008338.0A
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German (de)
English (en)
Other versions
EP1357298A2 (fr
EP1357298A3 (fr
Inventor
Ralf Lohmann
Jörg Zischewski
Georg Heinen
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Oerlikon Textile GmbH and Co KG
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Publication date
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Publication of EP1357298A2 publication Critical patent/EP1357298A2/fr
Publication of EP1357298A3 publication Critical patent/EP1357298A3/fr
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Publication of EP1357298B1 publication Critical patent/EP1357298B1/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/003—Systems with load-holding valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
    • B65H49/02—Methods or apparatus in which packages do not rotate
    • B65H49/04—Package-supporting devices
    • B65H49/14—Package-supporting devices for several operative packages
    • B65H49/16—Stands or frameworks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F15B2211/3051—Cross-check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—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
    • F15B2211/3057—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 two valves, one for each port of a double-acting output member
    • 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
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/353—Flow control by regulating means in return line, i.e. meter-out control
    • 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • 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
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out control
    • 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
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7107—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being mechanically linked

Definitions

  • the invention relates to an actuating valve according to the preamble of patent claim 1.
  • valves are used as the pneumatic cylinder immediately upstream multi-way valves as 2/2-way valves, so that an additional compressed air channel is needed to control these multi-way valves so that upon actuation of one of the two switching valves each having a pressure chamber Compressed air is applied and the other pressure chamber is relieved.
  • the US-A-3,164,959 describes a system with an actuating valve for a hydraulic cylinder having two separate from each other by a piston attached to a piston rod pressure chambers.
  • the designed as a 5/2-way valve valve is connected via a conduit and valve system an alternately acting in two directions pump for hydraulic fluid upstream;
  • This pump is connected to a reservoir for hydraulic fluids by means of two lines equipped with check valves.
  • hydraulic fluid is supplied to one pressure chamber of the hydraulic cylinder while the hydraulic fluid from the other pressure chamber flows back into the reservoir.
  • the pressure medium is always conveyed only in one direction, so that the hydraulic pump upstream lines are relieved of pressure, while in a pneumatic system, the compressed air used in this context, unless appropriate shut-off valves are present, can distribute over the entire line system ,
  • the known hydraulic system can thus not be used as a pneumatic system without fundamental modifications being carried out, so that practically only secondary features of the pneumatic system can be found again from the original design of the hydraulic system.
  • the invention is based on the object, a relation to that in the FR-A-2 660 726 to provide improved actuation valve.
  • FIG. 1a shows the actuating valve 23 in the rest position
  • FIG. 1b shows an operating position in which the piston rod is moved 8.1 in the direction of arrow f1 in the cylinder 8.
  • FIG. 1a are connected to a compressed air source P by means of connecting lines L2, R2, two switching valves in the form of, for example, manually operable 3/2-way valves L1, R1.
  • the check valves L4, R4 contain and lead to two 3/2-way valves L5, R5, which are connected via lines L6, R6 to the pressure chambers 8.3, 8.4 of the pneumatic cylinder 8 can be connected.
  • a control line L7 which leads to the 3/2-way valve R5, upon application of this control line L7 with compressed air, the 3/2-way valve R5 against the force of the spring R8 to adjust to the venting position.
  • the same purpose is used to adjust the 3/2-way valve L5 against the force of the return spring L8, the control line R7.
  • the switching valves L1, R1 and the check valves L4, R4 and the valves L5, R5 are preferably poppet valves, which have valve bodies equipped with sealing rings, which are displaceable against spring force in valve chambers having corresponding valve seats for the sealing rings.
  • the actuation valve according to the invention thus combines schematically considered four separate 3/2-way valves and two check valves, which are preferably designed as seat valves and linked together such that at z.
  • the pressure chamber 8.4 is supplied with compressed air, while the pressure chamber is 8.3 vented via the the 3/2-way valve L5 associated throttle L10.
  • This valve block is made according to FIG. 3 from a lower part 25 and an upper part 26.
  • a guided through the upper part 26 and connectable to a compressed air source P channel 27 opens into a distribution chamber 28.
  • two valve bodies 31, 31 ' are stored or guided, which by means of button L9, R9 against the force of return springs 33, 33 'in the distribution chamber 28 can be inserted.
  • valve body 31 is mounted by means of a valve stem 31.1 to form an annular gap in a bore 25.1 of the valve block lower part 25 such that the located above the valve stem 31.1 portion of the bore 25.1 is open to the environment, as in FIG. 3 for the button L9, see guide shaft 31.1 'and bore 25.1'.
  • the diameter of the bore portion 25.4 is greater than the diameter of the valve chamber 25.2 such that the sealing ring is housed in Vietnamesebetätigtem switching valve in the bore portion 25.4 that laterally on this sealing ring 31.2 past a connection between the channel 35 and the environment is made.
  • the valve chamber 25.2 opens into the distribution chamber 28 to form a valve seat 25.3.
  • a channel 35 adjoins the valve chamber 25.2 laterally above the sealing ring 31.2.
  • a sealing ring 31.4 of the valve body 31 is pressed in the rest position by the spring 33 against the valve seat 25.3, as in FIG. 3 for the valve body 31 'is shown.
  • a stepped bore which receives a double-valve unit consisting of a first, lower valve body 36 and a second upper valve body 38.
  • This stepped bore has a guide section 39 adjoining the channel 35, to which a valve chamber 41 adjoins to form a valve seat 40.
  • a valve chamber 41 Connected to this valve chamber 41 via a further valve seat 42 is a valve chamber 43, to which a valve seat 44 is connected via a valve chamber 45 into which a venting channel 46 opens laterally.
  • valve body 36 has a guided in the guide bore 39 valve stem 36.1, which has distributed over its circumference a plurality of axial slots 36.2.
  • valve stem 36.1 At the top of the valve stem 36.1 is a sealing ring 36.3, in the rest position is pressed by the supported between the lower and upper valve bodies 36, 38 return spring 36.4 against the valve seat 40.
  • the valve body 38 has a guided in the valve chamber 41 valve stem 38.1, which is designed substantially as a hollow cylinder with lateral wall openings 38.2 and with its interior with the valve chamber 41 may be in communication.
  • This valve body 38 carries a first, lower sealing ring 38.3 for cooperation with the valve seat 42 and a second, upper sealing ring 38.4 for cooperation with the valve seat 44.
  • the valve body 38 is further provided with a sealingly guided in the valve chamber 45 piston 38.5.
  • the actuating valve contains, in addition to the valve unit described in connection with the valve bodies 31, 36 and 38, a second symmetrically constructed valve unit whose individual parts in FIG. 3 are shown on the left and the same reference numerals as in FIG. 3 Carrying valve unit shown on the right, wherein for these valve units shown on the left is added to the reference numerals a superscript index line.
  • the two valve units are according to the control lines L7, R7 of FIGS. 1a and 1b by linked to the channels 35, 35 'subsequent control channels 47 and 47' with each other. So according to the Figures 3 and 4 the branching off from the channel 35 control channel 47 a transversely through the valve block upper part 26 extending connecting channel 47.1, which opens with its mouth 47.2 above the valve body 38 'in the valve chamber 45'.
  • FIG. 3 right illustrated valve unit By pressing the button R9 the in FIG. 3 right illustrated valve unit operated. Characterized the sealing ring 31.4 of the valve body 31 is lifted from the distribution chamber 28 facing the valve seat 25.3, so that compressed air flows into the channel 35 and the guide bore 39. Thereby, the lower valve body 36 is displaced against the force of the return spring 36.4 upwards, and the sealing ring 36.3 is lifted from the valve seat 40, so that compressed air through the radial slots 36.2 in the valve chamber 41 and thus Also flows through the wall openings 38.2 of the valve stem 38.1 in the valve chamber 43.
  • This valve chamber 43 is connected via a lateral opening 43.1 with a connection channel 50 in connection to which the leading to the pressure chamber 8.4 compressed air connection line R6 is connected, so that the compressed air can flow into this pressure chamber 8.4.
  • venting channel 46 ' corresponds to the throttle L10 of FIGS. 1a and 1b associated with an exhaust throttle (not shown). The same applies to the vent channel 46th

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

Claims (10)

  1. Distributeur d'actionnement pour un vérin pneumatique (8) qui présente deux chambres de pression (8.3, 8.4) séparées l'une de l'autre par un piston installé sur une tige de piston (8.1), ledit distributeur d'actionnement comprenant deux distributeurs 3/2 voies comme distributeurs de commutation (L1, R1), pouvant être raccordés à une source d'air comprimé (P), ainsi qu'un système de distribution raccordé entre ces distributeurs de commutation et le vérin pneumatique (8), système qui présente deux distributeurs multivoies montés juste avant le vérin pneumatique et par lequel, lors de l'actionnement d'un des deux distributeurs de commutation (L1, R1), une chambre de pression respective (8.3, 8.4) est alimentée en air comprimé et l'autre chambre de pression respective (8.3, 8.4) est détendue,
    caractérisé en ce que les distributeurs multivoies montés avant le vérin pneumatique (8) sont des distributeurs 3/2 voies (L5, R5) et le système de distribution présente deux clapets anti-retour (L4, R4) qui se trouvent respectivement et individuellement dans une des branches de conduite (L3, R3) reliant les distributeurs de commutation (L1 ou R1) à un des deux distributeurs 3/2 voies (L5 ou R5), branches à chacune desquelles est respectivement raccordée, avant les clapets anti-retour (L4, R4), une conduite de commande (L7 ou R7) menant à l'autre des deux distributeurs 3/2 voies (R5 ou L5), conduites de commande au moyen desquelles les deux distributeurs 3/2 voies (L5, R5) peuvent être déplacés entre leurs positions de passage d'air comprimé et leurs positions de détente de telle sorte que
    a) lorsque les distributeurs de commutation (L1, R1) ne sont pas actionnés, les distributeurs 3/2 voies (L5, R5) prennent leurs positions de passage d'air comprimé, tandis que les distributeurs de commutation (L1, R1) prennent une position évacuant l'air des branches de conduite (L3, R3),
    tandis que
    b) lors de l'actionnement d'un distributeur de commutation respectif (L1, R1), ce dernier prend une position de passage de la pression vers la branche de conduite qui lui est raccordée.
  2. Distributeur d'actionnement selon la revendication 1, caractérisé en ce que les distributeurs de commutation (L1, R1) ainsi que les clapets anti-retour (L4, R4) et les distributeurs (L5, R5) sont des soupapes à siège, qui présentent des corps de soupape qui sont équipés de bagues d'étanchéité et qui peuvent être déplacés à l'encontre d'une force de ressort dans des chambres de soupape qui possèdent des sièges de soupape correspondants pour les bagues d'étanchéité.
  3. Distributeur d'actionnement selon la revendication 1 ou 2, caractérisé en ce que chaque unité de distribution comprend, en tant qu'unité à double soupape, deux corps de soupape (36, 36', 38, 38') pouvant être conjointement déplacés, qui sont logés coaxialement entre eux dans des chambres de soupape (41, 43, 45 ou 41', 43', 45') réalisées sous forme de perçages étagés et dont la première extrémité est, dans la position correspondante des distributeurs de commutation, raccordée par l'intermédiaire d'un canal d'amenée (35 ou 35') au canal d'alimentation en air comprimé (27), tandis que la deuxième extrémité de chaque chambre de soupape est reliée au canal d'amenée (35 ou 35') associé à l'autre chambre de soupape, en ce que les perçages étagés formant les chambres de soupape sont subdivisés, et équipés de sièges de soupape coopérant avec des bagues d'étanchéité montées sur les corps de soupape, de manière à, lors de l'actionnement des soupapes de commutation (R9, L9), raccorder alternativement un canal respectif de branchement d'air comprimé (50, 50') au canal d'alimentation en air comprimé et, en même temps, évacuer l'air de l'autre canal de branchement d'air comprimé par l'intermédiaire de l'étranglement d'air sortant, et en ce que
    - des ressorts de rappel (33, 33') sont associés aux deux unités à double soupape, ressorts qui agissent sur les corps de soupape formant les unités de distribution de telle sorte que la liaison entre la deuxième extrémité de chaque chambre de soupape et le canal d'amenée (35 ou 35') de l'autre chambre de soupape peut être interrompue.
  4. Distributeur d'actionnement selon la revendication 3, caractérisé en ce que les distributeurs sont tous réalisés sous forme de soupapes à siège et sont logés dans un bloc de distribution commun et combinés entre eux de telle sorte que, lors de l'actionnement d'un des deux distributeurs de commutation, une des deux chambres de pression du vérin pneumatique peut être alimentée en pression, tandis que l'autre chambre de pression est détendue de préférence par l'intermédiaire d'un étranglement d'air sortant, de sorte que, lors de la libération du distributeur de commutation précédemment actionné, le vérin pneumatique reste sollicité par l'air comprimé des deux côtés, obtenant ainsi un auto-maintien du vérin pneumatique ou encore de son piston.
  5. Distributeur d'actionnement selon la revendication 3 ou 4, caractérisé en ce que le bloc de distribution (25, 26) présente une chambre de répartition (28) commune aux deux distributeurs de commutation et pouvant être raccordée à une source d'air comprimé, de telle sorte que, lors de l'actionnement d'un des deux distributeurs de commutation, une liaison est réalisée vers le canal de branchement d'air comprimé (50, 50') associé à ce distributeur de commutation.
  6. Distributeur d'actionnement selon la revendication 5, caractérisé en ce que chaque distributeur de commutation présente une chambre de soupape (25.2) débouchant dans la chambre de répartition (28) en formant un siège de soupape (25.3) et destinée à recevoir un corps de soupape (31), corps qui peut être introduit dans la chambre de répartition (28) à l'encontre de la force d'un ressort de rappel (33) et qui présente, à son extrémité pouvant être introduite dans la chambre de répartition (28), une bague d'étanchéité (31.4) pour coopérer avec le siège de soupape (25.3), et en ce qu'un canal (35) menant au canal associé de branchement d'air comprimé (50) débouche latéralement dans la chambre de soupape (25.2).
  7. Distributeur d'actionnement selon la revendication 6, caractérisé en ce qu'un tronçon de perçage (25.4) se raccorde à la chambre de soupape (25.2), à l'extrémité ne débouchant pas dans la chambre de répartition (28), tronçon dont le diamètre est supérieur au diamètre de la chambre de soupape (25.2), et en ce que le corps de soupape (31) porte, à son extrémité tournée vers ce tronçon de perçage (25.4), une bague d'étanchéité (31.2) qui est dirigée en étanchéité dans la chambre de soupape (25.2) lors de l'enfoncement du corps de soupape (31) dans la chambre de répartition (28), tandis que, lorsque le distributeur de commutation n'est pas actionné, elle est logée dans le tronçon de perçage (25.4) de telle sorte qu'une liaison est réalisée latéralement à cette bague d'étanchéité (31.2) entre le canal (35) et l'environnement.
  8. Distributeur d'actionnement selon la revendication 7, caractérisé en ce qu'un perçage étagé est ménagé dans le bloc de distribution (25, 26) pour recevoir l'unité à double soupape constituée d'un premier corps de soupape (36) et d'un deuxième corps de soupape (38), perçage qui possède un tronçon de guidage (39) se raccordant au canal (35) et auquel se raccorde, en formant un siège de soupape (40), une première chambre de soupape (41) à laquelle se raccorde par l'intermédiaire d'un siège de soupape (42) une deuxième chambre de soupape (43), qui a un plus grand diamètre que la chambre de soupape (41), possède une ouverture latérale vers le canal de branchement d'air comprimé (50) et à laquelle se raccorde par l'intermédiaire d'un siège de soupape (44) une troisième chambre de soupape (45) dans laquelle débouche un canal d'évacuation d'air (46) ouvert vers l'environnement, en ce que le premier corps de soupape (36) présente une tige de soupape (36.1), qui est dirigée dans le perçage de guidage (39), présente sur sa périphérie au moins une fente axiale et porte sur son côté supérieure une bague d'étanchéité (36.3) coopérant avec le siège de soupape (40), en ce que le deuxième corps de soupape (38) présente une tige de soupape (38.1), qui est dirigée dans la chambre de soupape (41) et est réalisée pour l'essentiel sous forme de cylindre creux avec des ouvertures de paroi latérales (38.2), afin de réaliser dans la positon ouverte du premier corps de soupape (36) une liaison entre la chambre de soupape (41) et la chambre de soupape (43), en ce que le deuxième corps de soupape (38) porte une première bague d'étanchéité (38.3) pour coopérer avec le siège de soupape (42) ainsi qu'une deuxième bague d'étanchéité (38.4) pour coopérer avec le siège de soupape (44), et en ce que le corps de soupape (38) est pourvu d'un piston (38.5) dirigé en étanchéité dans la chambre de soupape (45), de telle sorte que, lors de la sollicitation en pression du deuxième corps de soupape (38), celui-ci peut être déplacé, à l'encontre de la force d'un ressort de rappel (36.4) s'appuyant entre le premier corps de soupape (36) et le deuxième corps de soupape (38), de telle sorte que la bague d'étanchéité (38.4) est décollée du siège de soupape (44) et qu'une liaison peut être ainsi réalisée entre le canal d'évacuation d'air (46) et la deuxième chambre de soupape (43) et donc le canal de branchement d'air comprimé (50).
  9. Distributeur d'actionnement selon la revendication 8, caractérisé en ce qu'un étranglement d'air sortant est associé au canal d'évacuation d'air (46).
  10. Distributeur d'actionnement selon la revendication 8, caractérisé en ce qu'un système de canaux (47, 47.1) se raccorde au canal (35), système qui débouche dans la chambre cylindrique (45') de l'unité à double soupape montée avant le deuxième canal de branchement d'air comprimé (50'), de telle sorte que le deuxième corps de soupape (38') de cette deuxième unité à double soupape peut être déplacé, à l'encontre de la force du ressort de rappel (36.4') associé à cette deuxième unité à double soupape, de telle sorte qu'une liaison peut être réalisée entre la deuxième conduite de branchement d'air comprimé (50') et le canal d'évacuation d'air (46') de cette deuxième unité à double soupape.
EP03008338.0A 2002-04-26 2003-04-10 Distributeur d'actionnement pour un vérin pneumatique à double effet Expired - Lifetime EP1357298B1 (fr)

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DE10218589 2002-04-26
DE10218589 2002-04-26

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EP1357298A3 EP1357298A3 (fr) 2005-09-28
EP1357298B1 true EP1357298B1 (fr) 2013-06-12

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US (1) US6848641B2 (fr)
EP (1) EP1357298B1 (fr)
CN (1) CN1325802C (fr)
DE (1) DE10253340B4 (fr)
HK (1) HK1061060A1 (fr)

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Also Published As

Publication number Publication date
EP1357298A2 (fr) 2003-10-29
DE10253340A1 (de) 2003-11-20
CN1472443A (zh) 2004-02-04
EP1357298A3 (fr) 2005-09-28
US6848641B2 (en) 2005-02-01
DE10253340B4 (de) 2007-02-15
US20030201355A1 (en) 2003-10-30
CN1325802C (zh) 2007-07-11
HK1061060A1 (en) 2004-09-03

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