EP1039146B1 - Hydraulisch entsperrbares Füllventil - Google Patents
Hydraulisch entsperrbares Füllventil Download PDFInfo
- Publication number
- EP1039146B1 EP1039146B1 EP00105865A EP00105865A EP1039146B1 EP 1039146 B1 EP1039146 B1 EP 1039146B1 EP 00105865 A EP00105865 A EP 00105865A EP 00105865 A EP00105865 A EP 00105865A EP 1039146 B1 EP1039146 B1 EP 1039146B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stop
- filling valve
- shank
- nut
- impact
- 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
Links
Images
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 releasable filling valve in the preamble of Claim 1 specified type.
- a hydraulic damping device which is in the final phase of the Valvesschpractichubes comes into effect and the impact of the valve disc on the Valve seat dampens.
- On the valve stem a cup-shaped damping body is displaceable guided, which limits a pressure chamber with a shoulder of the shaft.
- the damping body serves at the same time as an opponent of the valve closing spring, which in a with Pressure medium filled pressure chamber is arranged.
- the damping device is dependent from the speed of the motor or the valve closing frequency with respect to the damping stroke adjustable.
- slow-acting pneumatic valve is a dampening piston is provided on a shaft connected to the valve element, which is sealed displaceable in a fluid-filled chamber and throttle passages contains. Similar to a shock absorber, the fluid between the two Piston sides shifted back and forth, when the damping piston with the valve element emotional. As a result, the movement of the valve element is delayed
- hydraulic pressure control valve is on a arranged a damping piston with the valve closing element coupled shank, which is reciprocable in a chamber filled with pressure medium and forth.
- Shank are communicating with each other on both sides of the damping piston Throttle openings provided so that the pressure fluid during movements of the damping piston moved back and forth between the sides of the piston and thereby throttled is to dampen the movements of the Ventilschtimiides.
- EP-A 663 270 FR-A-28 7434, GB-A-1 209 088 and DE-U-79 31 561.
- the invention is based on the object, a filling valve of the type mentioned to create, especially at rapid filling cycles the risk of damage in the Shank or connecting region of the nut is minimized with the shaft.
- the effective between the counter stop and the stop impact damping device leads to a "softer" impact, allowing to consume the impact energy more time is available and the load in the shaft or connecting area between the nut and the shaft is reduced. This is for big Valve seat diameter and when filling or ejection advantageous.
- the impact damping device should not affect the adjustment of the valve element in the Closed position, so that a relatively small restoring force on the shaft is sufficient around the valve element after filling or pushing out into the closed position to adjust. It comes the counter-attacking mother not directly on Attack to attack, but indirectly via the impact damping device, at least to consume a portion of the impact energy.
- the damping element is at a on the shank displaceable intermediate ring positioned, the lifting movement of the Shaft does not join and holds the damping element in a position that for damping is cheap.
- the impact steam device is exclusively within a Hubüberschreibes of the shaft. It is important that the valve element is so reaches full open position as quickly as possible to the maximum flow area to clear the pressure medium as quickly as possible.
- the interior of the adjusting device is usually filled with pressure medium offers a combination of a hydraulic and a mechanical impact damping device at, wherein the hydraulic impact damping device also depending on the stroke of the shaft comes into effect. This is for steaming through the positive displacement projection pressure medium from the immersion well over a cramped Section pushed out.
- the Nachsaug Kohlschlagventil ensures that when Stroke of the shaft in the closing direction does not brake the impact damping device.
- By dimensioning the immersion recess and / or the throttle cross section for Displacement of the pressure medium can be the damping effect or damping characteristic to adjust.
- the Nachsaugfeder required to adjust the valve element to the closed position is used to position the intermediate ring in a ready position and optionally to bias the damping element. This will achieve that the intermediate ring does not join the strokes of the shaft.
- the impact damping device is particularly useful for the opening stroke of the Valve member. However, it is conceivable, even for the closing movement a similar To provide impact damping device, although the impact energy in the closing direction is less than in the opening direction.
- the filling valve F in Fig. 4 has a disk-shaped solid housing 1, in the between a filling chamber K and a working chamber A an annular valve seat P is shaped. With the valve seat P, a valve element V operates in the manner of a seat valve together, which points upwards from a disc-shaped main body, has central shaft 4.
- the working chamber A does not communicate with one shown cylinder space of a press piston (not shown), which consists of a Basic position near the filling valve F, e.g. in the direction of the shaft 4, towards a pressing position is movable.
- the filling chamber K is bounded by a filling chamber wall W, which extends up to a shaft passage 3 and approximately parallel extends to the top of the valve element V.
- Part of the Medcrowandung W is an end wall 2 of an integrated into the housing 1 adjusting E, in a Entsperrantrieb for the valve element V is provided.
- the adjustment E is in the housing 1 supported on from outside to inside supporting webs T, between which several beginning at the top of the housing 1 and in the Medcrowandung W forming kidney-shaped passages D are formed.
- the housing 5 projects the shaft 4 of the valve element V.
- a Entsperrkolben 6 slidably guided with seals 7, which has a through a support bar T extending Entsperrkanal 8 is applied hydraulically to the Valve element V from the closed position shown in the fully open position, not shown to move down.
- the release piston 6 is replaced by a strong return spring 9 loaded, which is supported in the adjusting device E.
- a nut 10 which is bolted to the shaft 4 and a fuse 11th is secured.
- the nut 10 is connected by a weak Nachsaugfeder 12 in the closing direction the valve element V charged.
- a counter-attack R provided, which is aligned with a stationary stop S of the adjusting device E. is.
- valve element V During a movement of the press piston, not shown, from its basic position the valve element V from the closed position shown in the fully open position moves, in which the nut 10 meets with its counter-stop R on the stop S. Pressure fluid flows through the passages D, the filling chamber K and the valve seat S. along the top of the valve element V in the working chamber A and the press piston. As soon as the press piston reaches the desired position and between the passages D and the working chamber a substantial pressure equalization took place has, the valve element V by the Nachsaugfeder 12 in the closed position adjusted. Then, a press tact is performed by means not shown is controlled, wherein the filling valve F remains in its closed position.
- an inner bore 16 of the intermediate ring 14 surrounds the shaft 4 with radial Game.
- the intermediate ring 14 engages with a centering flange 17 via a circumferential Shoulder 18 of the stop S to the shaft 4 of braking frictional forces kept clear.
- an underside 29 of the intermediate ring 14 is an annular groove 19th molded, in which the damping element 15 is positioned.
- the damping element 15 is annular, e.g. an O-ring and jumps over the bottom 29 before.
- the nominal stroke of the Shaft 4 until reaching the full open position is X.
- the length of the nut 10 and the intermediate ring 14 is selected so that at largely relaxed Damping element 15 is a stroke oversize y, within which the impact damping device G comes into effect.
- the Nachsaugfeder 23 is based on a shoulder 21 of the intermediate ring 14 from to this in the standby position shown secure, and possibly slightly bias the damping element 15.
- Of the 28 designated interior in the housing 5 is filled with pressure medium.
- valve element from the closed position shown in Fig. 2, right half either by applying the Entsperrkolbens 6 or under the suction at Method of the press piston, not shown, or by pressurization via the passages D, moves to the full open position (left half), then hits in the fen ein the counter-attack R on the intermediate ring 14, whereby this over the Stroke excess y is adjusted as far as possible on the 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 back and the intermediate ring 14 back into the ready position shown in Fig. 2, left side reset, in which the valve element V is in the full open position. Will be afterwards the valve element V is moved back into the closed position, then remains the intermediate ring 14 in the standby position shown.
- a hydraulic impact damping device G is provided.
- a positive displacement projection 24 is provided which defines the counter stop R.
- stationary stop S of the adjustment E is an immersion well 22 formed for the Verdrängervorsprung 24, which via a connection 25 with a Nachsaugschreibtschventil 26 is connected to the chamber 28.
- the outer diameter the Verdrängervorsprungs 24 is so on the inner diameter of the Immersion well 22 tuned that when penetrating the Verdrängervorsprungs 24 (Fig. 3, left half) contained therein pressure medium pushed upwards and throttled until the counter-attack R meets the stop S.
- the Impact energy is at least partially consumed.
- the suction check valve 26 locks in this flow direction. Is below the valve element back into the To move closed position, then the Verdrängervorsprung 24 from the immersion recess 22 pulled out, this movement by opening the Nachsaugschreibtschventils 26 is not braked.
- the filling valve of Fig. 3A is a simple mechanical Impact damping device G without the intermediate ring 14 shown in FIGS. 1, 2 intended.
- the annular groove 19 is formed, which designed as an O-ring Damping element 15 positioned over the stop S by the stroke oversize y protrudes towards the counter-stop R on the nut 10.
- the damping element 15 could also be provided at the counter stop R. It is also conceivable both at the counter stop R and at the stop S in each case at least one damping element 15 to provide.
- the inlet region is formed relatively high to the passages. It is possible to form the inlet area as shallow as in Fig. 1 with the dashed horizontal line is indicated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Lift Valve (AREA)
- Fluid-Damping Devices (AREA)
- Valve Device For Special Equipments (AREA)
Description
- Fig. 1
- eine erste Ausführungsform eines hydraulisch entsperrbaren Füllventils gemäß der Erfindung, in der linken Hälfte in der Offenstellung, in der rechten Hälfte hingegen in der Schließstellung, jeweils in einem Axialschnitt,
- Fig. 2
- einen vergrößerten Ausschnitt aus Fig. 1,
- Fig. 3
- einen vergrößerten Ausschnitt einer anderen Ausführungsform,
- Fig. 3A
- einen vergrößerten Ausschnitt einer weiteren Ausführungsform, und
- Fig. 4
- einen Axialschnitt eines bekannten Füllventils (Stand der Technik) in der Schließstellung.
Claims (7)
- Hydraulisch entsperrbares Füllventil (F) für eine Hydraulikpresse, mit einem relativ zu einem Ventilsitz (P) verstellbaren, einen Schaft (4) aufweisenden Ventilelement (V), dessen Schaft (4) in einer Verstelleinrichtung (E) angeordnet und durch einen Entsperrantrieb gegen eine Rückstellkraft aus einer Schließstellung in eine vorbestimmte Offenstellung und mit einem durch eine am Schaft (4) angeordnete Mutter (10) gebildeten Gegenanschlag (R) gegen einen stationären Anschlag (S) bringbar ist, dadurch gekennzeichnet, dass in der Verstelleinrichtung (E) zwischen der Mutter (10) und dem Anschlag (S) eine wenigstens ein elastisch deformierbares Dämpfelement (15) aufweisende, mechanische Aufschlagdämpfvorrichtung (G) vorgesehen ist, und dass das Dämpfelement (15) an der Mutter (10) und/oder am Anschlag (S) und/oder an einem auf dem Schaft (4) verschiebbaren Zwischenring (14) positioniert ist.
- Füllventil nach Anspruch 1, dadurch gekennzeichnet, dass der Anschlag (S) gegenüber einem Sollhub (X) des Schafts (4) zwischen der Schließ- und der Offenstellung um ein vorbestimmtes Hubübermaß (y) über die Offenstellung hinaus versetzt ist, und dass die Aufschlagdämpfvorrichtung (G) innerhalb des Hubübermaßes (y) wirksam ist.
- Füllventil nach Anspruch 1, dadurch gekennzeichnet, dass die Aufschlagdämpfvorrichtung (G) in Hubrichtung des Schafts (4) zur Offenstellung wirksam ist.
- Füllventil nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass das Dämpfelement (5) ringförmig ausgebildet ist, vorzugsweise als in eine Ringnut (19) eingesetzter und mit dem Hubübermaß (y) axial überstehender O-Ring.
- Füllventil nach Anspruch 1, dadurch gekennzeichnet, dass die Mutter (10) in Bewegungsrichtung des Schafts (4) zur Schließstellung durch eine Nachsaugfeder (23) beaufschlagt ist, und dass sich die Nachsaugfeder (23) am Zwischenring (14) abstützt und diesen in einer das Dämpfelement (15) beim Anschlag (S) positionierenden, vorzugsweise vorgespannten, Bereitschaftsstellung sichert.
- Füllventil nach Anspruch 5, dadurch gekennzeichnet, dass der Zwischenring (14) einen den Anschlag (S) übergreifenden Zentnerftansch (17) aufweist.
- Füllventil nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die mechanische Aufschlagdämpfvrorrichtung (G) mit einer hydraulischen Aufschlagdämpfvorrichtung kombiniert ist, die an der Mutter (10) oder dem Anschlag (S) eine Eintauchvertiefung (22) für einen am Anschlag bzw. der Mutter vorgesehenen Verdrängervorsprung (24) aufweist, und dass zwischen der Eintauchvertiefung (22) und einer in der Einstelleinrichtung (E) vorgesehenen, mit Druckmittel gefüllten Kammer (28) ein Nachsaugrückschlagventil (26) angeordnet ist.
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 EP1039146A1 (de) | 2000-09-27 |
EP1039146B1 true EP1039146B1 (de) | 2004-08-25 |
Family
ID=8071278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00105865A Expired - Lifetime EP1039146B1 (de) | 1999-03-23 | 2000-03-20 | Hydraulisch entsperrbares Füllventil |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1039146B1 (de) |
AT (1) | ATE274647T1 (de) |
DE (2) | DE29905322U1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005008203A1 (de) | 2005-02-22 | 2006-08-31 | Bosch Rexroth Aktiengesellschaft | Füllventil mit formschlüssiger Sicherung |
DE102005008202A1 (de) * | 2005-02-22 | 2006-09-07 | Bosch Rexroth Aktiengesellschaft | Füllventil mit Kontermutter |
EP1855014B1 (de) | 2006-05-08 | 2010-08-25 | HAWE Hydraulik SE | Füllventil |
EP3034918B1 (de) | 2014-12-16 | 2017-02-15 | HAWE Hydraulik SE | Füllventil |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7931561U1 (de) * | 1979-11-08 | 1980-02-14 | Knorr-Bremse Gmbh, 8000 Muenchen | Zylinder mit druckbeaufschlagtem Kolben |
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 |
FR2613785B1 (fr) * | 1987-04-13 | 1990-11-23 | Gratzmuller Claude | Verin hydraulique differentiel, avec systeme d'amortissement, pour la commande de disjoncteurs electriques |
DE4400779A1 (de) * | 1994-01-13 | 1995-07-20 | Duss Maschf | Elektropneumatischer Schlag- oder Drehschlaghammer |
-
1999
- 1999-03-23 DE DE29905322U patent/DE29905322U1/de not_active Expired - Lifetime
-
2000
- 2000-03-20 DE DE50007535T patent/DE50007535D1/de not_active Expired - Lifetime
- 2000-03-20 AT AT00105865T patent/ATE274647T1/de active
- 2000-03-20 EP EP00105865A patent/EP1039146B1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Also Published As
Publication number | Publication date |
---|---|
DE50007535D1 (de) | 2004-09-30 |
ATE274647T1 (de) | 2004-09-15 |
DE29905322U1 (de) | 1999-06-24 |
EP1039146A1 (de) | 2000-09-27 |
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