EP1039146A1 - Soupape de remplissage pilotée - Google Patents

Soupape de remplissage pilotée Download PDF

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Publication number
EP1039146A1
EP1039146A1 EP00105865A EP00105865A EP1039146A1 EP 1039146 A1 EP1039146 A1 EP 1039146A1 EP 00105865 A EP00105865 A EP 00105865A EP 00105865 A EP00105865 A EP 00105865A EP 1039146 A1 EP1039146 A1 EP 1039146A1
Authority
EP
European Patent Office
Prior art keywords
stop
filling valve
shaft
valve according
nut
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
EP00105865A
Other languages
German (de)
English (en)
Other versions
EP1039146B1 (fr
Inventor
Georg Dipl.-Ing. Neumair (Fh)
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.)
Hawe Hydraulik GmbH and Co KG
Original Assignee
Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG
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 Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG filed Critical Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG
Publication of EP1039146A1 publication Critical patent/EP1039146A1/fr
Application granted granted Critical
Publication of EP1039146B1 publication Critical patent/EP1039146B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/18—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram
    • B30B15/183—Controlling the filling of the press cylinder during the approach stroke of the ram, e.g. prefill-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
    • 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
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0407—Means for damping the valve member movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/227—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having an auxiliary cushioning piston within the main piston or the cylinder end face

Definitions

  • the invention relates to a hydraulically unlockable filling valve in the preamble of Claim 1 specified type.
  • the invention has for its object a filling valve of the type mentioned to create, in which the risk of damage in the The shaft or connection area of the nut with the shaft is minimized.
  • the impact damping device effective between the counter-stop and the stop leads to a "softer" serve, so that the serve energy is consumed more time is available and the load in the shaft or connection area between the mother and the shaft is reduced. This is great Valve seat diameter and advantageous when filling or pushing out.
  • the impact damping device is useful only within an excess stroke of the shaft effective. It is important that the valve element is so reaches the full open position as quickly as possible to achieve the maximum flow cross-section to clear the pressure medium as quickly as possible.
  • the impact damping device should not influence the adjustment of the valve element have in the closed position, so that a relatively low restoring force on Shaft is sufficient to the valve element after filling or pushing out into the To adjust the closed position.
  • a mechanical impact damping device can be used, the one has elastically deformable damping element.
  • combinations are also possible from a hydraulic and a mechanical impact damping device.
  • the mother who forms the counter-stop no longer comes directly to the stop to attack, but indirectly via the impact damping device to at least one Consume part of the impact energy.
  • the suction check valve ensures that when the shaft is moved in the closing direction, the impact damping device does not brake.
  • the damping element is positioned on an intermediate ring which is displaceable on the shaft, that does not follow the stroke movement of the shaft and the damping element in one Holds position that is favorable for damping.
  • At least one O-ring positioned in an annular groove is used, which protrudes in the stroke direction over the ring groove and is deformed when it is impacted. It several O-rings could be connected in parallel, the same distance or different protrude far or have different hardness. Other ring-shaped ones could also be used Damping elements with non-circular cross sections can be used. It is also conceivable the use of at least one spring or more in the circumferential direction around the Distributed spring shaft.
  • the suction spring required to adjust the valve element to the closed position is also used to position the intermediate ring in a standby position, and prestress the damping element if necessary. This ensures that the intermediate ring does not follow the stroke movements of the shaft.
  • the centering flange ensures that the intermediate ring shifted in a predetermined manner and no harmful forces on the shaft exercises that could hinder its movement.
  • the impact damping device is particularly useful for the opening stroke of the Valve element. However, it is conceivable to use a similar one for the closing movement Impact damping device to be provided, although the impact energy in the closing direction is less than in the opening direction.
  • a hydraulically unlockable filling valve F is a known one and embodiment used for years for high performance presses explained.
  • the filling valve F in Fig. 4 has a disk-shaped solid housing 1 in which between a filling chamber K and a working chamber A, an annular valve seat P is shaped.
  • a valve element V works with the valve seat P in the manner of a seat valve together, the one pointing upwards from a disk-shaped base body, has central shaft 4.
  • Working chamber A does not communicate with you Shown cylinder space of a press piston (not shown), which consists of a Basic position near the filling valve F, e.g. towards the shaft 4, towards a press position is movable.
  • the filling chamber K is limited by a filling chamber wall W, which extends up to a shaft passage 3 and approximately parallel runs to the top of the valve element V. Is part of the filling chamber wall W.
  • the adjustment device E is supported in the housing 1 on external webs T extending between which several beginning at the top of the housing 1 and in the Medauer W opening kidney-shaped passages D are formed.
  • a Housing 5 placed on top protrudes shaft 4 of valve element V.
  • an unlocking piston 6 with seals 7 slidably guided by a a supporting web T extending unlocking channel 8 is hydraulically applied to the Valve element V from the closed position shown in the fully open position, not shown to move down.
  • the unlocking piston 6 is by a strong return spring 9 loaded, which is supported in the adjusting device E.
  • a nut 10 On the shaft 4 sits a nut 10, which is screwed to the shaft 4 and by a fuse 11 is secured.
  • the nut 10 is in the closing direction by a weak suction spring 12 of the valve element V loaded.
  • a counter stop R On the nut 10 is a counter stop R provided, which is aligned with a stationary stop S of the adjusting device E. is.
  • valve element V When the press piston, not shown, moves from its basic position is the valve element V from the closed position shown in the full open position moves, in which the nut 10 hits the stop S with its counter stop R. Pressure medium flows through the passages D, the filling chamber K and the valve seat S. along the top of the valve element V into the working chamber A and to the press piston. As soon as the press piston reaches the desired position and between A large pressure equalization took place in the passages D and the working chamber has, the valve element V by the suction spring 12 in the closed position adjusted. Then a press cycle is carried out by means not shown is controlled, the filling valve F remains in its closed position.
  • the unlocking piston 6 is hydraulically actuated in order to the valve element V via the nut 10 and against the forces of the springs 9, 23 in the Move open position.
  • the pressure medium from the press cylinder is through the Valve seat S, the filling chamber K and the passages D pushed out.
  • the unlocking piston 6 is depressurized and reset by the return spring 9.
  • the Suction spring 23 then leads the valve element back into the closed position.
  • An impact damping device G which has a softer one Impact causes and the impact energy slowly consumes.
  • the nut 10 with the Shank 4 connected via a threaded connection 13, which is secured by the fuse 11 is.
  • an expansion taper is in the shaft 4 as a flanking measure 12 shaped.
  • the impact damping device G Between the counter stop R of the nut 10 and the stationary one Stop S of the adjusting device E is the impact damping device G.
  • the shaft 4 is surrounded by an intermediate ring 14, which is on the shaft 4 is displaceable and contains an elastically deformable damping element 15 which for Impact damping works together with the stationary stop S (mechanical Impact damping device G).
  • an inner bore 16 of the intermediate ring 14 surrounds the shaft 4 with a radial Game.
  • the intermediate ring 14 engages with a centering flange 17 over a circumferential one Shoulder 18 of the stop S to the shaft 4 from braking frictional forces keep clear.
  • an underside 29 of the intermediate ring 14 there is an annular groove 19 molded in which the damping element 15 is positioned.
  • the damping element 15 is circular, e.g. an O-ring and projects over the bottom 29.
  • the target stroke of the Shaft 4 until the full opening position is reached is X.
  • the length of the nut 10 or the intermediate ring 14 is selected so that when largely relaxed Damping element 15 is a stroke oversize y, within which the impact damping device G comes into effect.
  • the suction spring 23 is supported on a shoulder 21 of the intermediate ring 14 to close this in the standby position shown secure, and if necessary, slightly bias the damping element 15.
  • the designated interior space 28 in the housing 5 is filled with pressure medium
  • valve element If the valve element is in the closed position shown in FIG. 2, right half, either when the unlocking piston 6 is acted upon or under suction Method of the press piston, not shown, or by pressurizing the passages D, moved to the full open position (left half), then meets in the open position the counter stop R on the intermediate ring 14, whereby this over the Excess stroke y is adjusted up to the stop on stop S.
  • the damping element 15 is elastically deformed to dampen the impact. Once the impact energy is consumed, the damping element 15 can deform and the intermediate ring 14 again in the standby position shown in Fig. 2, left side reset in which the valve element V is in the fully open position. Will then the valve element V moves back into the closed position, then remains the intermediate ring 14 in the standby position shown.
  • a hydraulic impact damping device G is provided on the mother 10.
  • a displacement projection 24 is provided, which defines the counter stop R.
  • an immersion recess 22 formed for the displacement projection 24 which has a connection 25 with a Post-suction check valve 26 is connected to the chamber 28.
  • the outside diameter of the displacement projection 24 is so on the inner diameter of the Immersion recess 22 matched that when the displacement protrusion penetrates 24 (Fig. 3, left half) pressure medium enclosed therein pushed out upwards and is throttled until the counter stop R meets the stop S.
  • the Impact energy is at least partially consumed.
  • the suction check valve 26 blocks in this flow direction. Subsequently, the valve element is back in the To move the closed position, then the displacement projection 24 from the immersion recess 22 pulled out, this movement by opening the suction check valve 26 is not braked.
  • 3A is a simple mechanical one Impact damping device G without the intermediate ring 14 shown in FIGS. 1, 2 intended.
  • the annular groove 19 is formed, which is designed as an O-ring Damping element 15 positioned, the stroke S over the stroke oversize y protrudes towards the counter stop R on the nut 10.
  • the damping element 15 could, however, also be provided on the counter stop R. It is also conceivable at least one damping element each on the counter stop R and on the stop S. 15 to be provided.
  • the inlet area to the passages is relatively high. It it is possible to make the inlet area as shallow as that with the dashed line in FIG. 1 horizontal line is indicated.
EP00105865A 1999-03-23 2000-03-20 Soupape de remplissage pilotée Expired - Lifetime EP1039146B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29905322U 1999-03-23
DE29905322U DE29905322U1 (de) 1999-03-23 1999-03-23 Hydraulisch entsperrbares Füllventil

Publications (2)

Publication Number Publication Date
EP1039146A1 true EP1039146A1 (fr) 2000-09-27
EP1039146B1 EP1039146B1 (fr) 2004-08-25

Family

ID=8071278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00105865A Expired - Lifetime EP1039146B1 (fr) 1999-03-23 2000-03-20 Soupape de remplissage pilotée

Country Status (3)

Country Link
EP (1) EP1039146B1 (fr)
AT (1) ATE274647T1 (fr)
DE (2) DE29905322U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006089515A1 (fr) * 2005-02-22 2006-08-31 Bosch Rexroth Ag Soupape de remplissage a contre-ecrou
WO2006089518A1 (fr) 2005-02-22 2006-08-31 Bosch Rexroth Ag Soupape de remplissage comprenant une fixation par liaison de forme

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE479023T1 (de) 2006-05-08 2010-09-15 Hawe Hydraulik Se Füllventil
EP3034918B1 (fr) 2014-12-16 2017-02-15 HAWE Hydraulik SE Soupape de remplissage
CN108730252A (zh) * 2018-06-19 2018-11-02 韶关液压件厂有限公司 一种超高压大流量充液阀

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782765A (en) * 1954-07-28 1957-02-26 Robinson Products Inc Air cylinder
GB1209088A (en) * 1968-04-18 1970-10-14 Massey Ferguson Perkins Ltd Improvements in piston and cylinder assemblies
DE7931561U1 (de) * 1979-11-08 1980-02-14 Knorr-Bremse Gmbh, 8000 Muenchen Zylinder mit druckbeaufschlagtem Kolben
EP0287434A1 (fr) * 1987-04-13 1988-10-19 Claude Alain Gratzmuller Vérin hydraulique différentiel, avec système amortisseur, pour la commande de disjoncteurs électriques
EP0663270A1 (fr) * 1994-01-13 1995-07-19 Friedrich Duss Maschinenfabrik Gmbh & Co. Marteau à percussion rotative et/ou rectiligne

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782765A (en) * 1954-07-28 1957-02-26 Robinson Products Inc Air cylinder
GB1209088A (en) * 1968-04-18 1970-10-14 Massey Ferguson Perkins Ltd Improvements in piston and cylinder assemblies
DE7931561U1 (de) * 1979-11-08 1980-02-14 Knorr-Bremse Gmbh, 8000 Muenchen Zylinder mit druckbeaufschlagtem Kolben
EP0287434A1 (fr) * 1987-04-13 1988-10-19 Claude Alain Gratzmuller Vérin hydraulique différentiel, avec système amortisseur, pour la commande de disjoncteurs électriques
EP0663270A1 (fr) * 1994-01-13 1995-07-19 Friedrich Duss Maschinenfabrik Gmbh & Co. Marteau à percussion rotative et/ou rectiligne

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006089515A1 (fr) * 2005-02-22 2006-08-31 Bosch Rexroth Ag Soupape de remplissage a contre-ecrou
WO2006089518A1 (fr) 2005-02-22 2006-08-31 Bosch Rexroth Ag Soupape de remplissage comprenant une fixation par liaison de forme

Also Published As

Publication number Publication date
DE29905322U1 (de) 1999-06-24
DE50007535D1 (de) 2004-09-30
ATE274647T1 (de) 2004-09-15
EP1039146B1 (fr) 2004-08-25

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