EP1306561A2 - Druckmittelzylinder mit einer Einrichtung zur Verstellung des Kolbenhubs - Google Patents
Druckmittelzylinder mit einer Einrichtung zur Verstellung des Kolbenhubs Download PDFInfo
- Publication number
- EP1306561A2 EP1306561A2 EP02024402A EP02024402A EP1306561A2 EP 1306561 A2 EP1306561 A2 EP 1306561A2 EP 02024402 A EP02024402 A EP 02024402A EP 02024402 A EP02024402 A EP 02024402A EP 1306561 A2 EP1306561 A2 EP 1306561A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- insert
- piston
- cylinder
- cylinder housing
- pressure
- 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.)
- Withdrawn
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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
- 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
- F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke
Definitions
- the present invention relates to a pressure medium cylinder with a device for Adjustment of the piston stroke according to the preamble of claim 1.
- pressure medium cylinders are the above described way of moving machine parts between different positions used. It is general to be able to adjust the end position of the piston rod known, the pressure medium cylinder itself via its cylinder housing axially adjustable on the Assemble support structure.
- piston rods can also be used Be threaded sections, which an adjustment of the end position under With the help of nuts is possible, so that an axial adjustment of the position of the Nuts and then fixing them to the piston rod.
- This previously known technical solutions require a relatively time-consuming one Assembly effort to a precise setting of the desired end position in the To work together with the connected machine parts.
- the pressure cylinder is used to access the piston rod Space requirements limited so that it is difficult to make an exact adjustment over the above to achieve the means presented.
- a pressure cylinder of the above to create described type in which the stroke length with easily adjustable and adjusting means which are economical to manufacture and which can be adjusted for Pressure medium cylinders of smaller dimensions are suitable.
- the invention includes the technical teaching that an axially displaceable and fixable Use like an end stop in the cylinder housing to seal the Working chamber and limitation of the axial movement of the piston is provided, the Pressure medium connection is arranged in the wall of the cylinder housing that the End stop has a narrower end area than that of the surrounding cylinder housing, to a pressure medium flow between the Pressure medium connection and the working chamber in the different axial positions of the To form an engagement.
- the pressure medium cylinder designed according to the invention has the particular advantage that when attaching to a support structure for the desired piston stroke stroke length must not be taken into account.
- the length can only be adjusted after attaching the pressure cylinder by a simple axial adjustment of the im Cylinder housing intended use in the desired direction.
- the arrangement of the pressure medium connection in the area of the wall of the Cylinder housing can design the insert and therefore that of the whole Pressure cylinder can be simplified. Because the pressure medium between the end stop and the inner wall of the cylinder housing can flow, it is possible to use the end stop adjustable over the entire effective length of the insert.
- the present invention applies to both pressure medium cylinders with a piston rod also in pressure medium cylinders without a piston rod - i.e. in so-called rodless cylinders - can be used.
- Another advantage of the invention is that in a series production of the Pressure medium cylinder, the number of stroke length variants to be provided can be reduced can, what with regard to manufacturing and warehousing a considerable reduction in expenditure represents.
- the insert according to the invention is with a Provide the piston rod bore with the piston rod seal.
- the piston rod seal is preferably between one free end of the end stop and the seal between the insert and the Cylinder wall arranged in the axial direction, making a particularly space-saving solution is achieved, which makes it possible to create an overall compact arrangement.
- the pressure medium cylinder 1 shown in FIG. 1 has a cylinder housing 2 in which a piston 3 is accommodated in an axially movable manner and is connected to a piston rod 4 interacts.
- the piston 3 divides the interior of the cylinder housing 2 into itself in a known manner in a first working chamber 5 and a second working chamber 6.
- On first pressure medium connection 7 is connected to the first working chamber 5, whereas a second pressure medium connection 8 corresponds to the second working chamber 6.
- the Pressure medium connections 7 and 8 are used for pressurizing or evacuating the pressure medium assigned chambers and are for this purpose in a conventional manner - here not shown - with a pressure medium source with the interposition of a suitable valve connected.
- the pressure medium cylinder 1 extends along an axis A and the cylinder housing 2 is provided at one end with a conventional closure element 9.
- the Closure element 9 is sealingly inserted into the tubular cylinder housing 2, whereas an insert 10 on the other end of the cylinder housing 2 on the piston rod side is arranged.
- the insert 10 includes an end stop 11, which is a stop for the Piston 3 forms over its free end 12, to the right with respect to that in the Fig. 1 shown piston 3.
- the position shown in Fig. 1 shows that by the free End 12 of the end stop 10 defined end position of the piston 3.
- the insert 10 is further equipped with a piston rod seal 13 which is inside the area of the end stop 10 is placed.
- a seal 14 which seals the Inner wall of the cylinder housing 2 comes to rest on the outside of the Insert 10 arranged.
- the insert 10 is also with a threaded section equipped, which cooperates as an external thread 15 with a threaded bush 16, the is fixed within a face-side bore of the cylinder housing 2. in the The embodiment shown is the insert 10 on the piston rod side of the pressure medium cylinder arranged and welded or pressed in there.
- insert 10 has one Actuating section 17 to provide the operator with an axial adjustment of the insert 10 to enable the outside by a corresponding rotary movement.
- the insert 10 is maximally in the cylinder housing 2 screwed. An adjustment of the insert 10 from this position is indicated by a Unscrew the insert 10 reached. Over the entire adjustment length of the insert 10 pressure medium can pass insert 10 starting from pressure medium connection 7. A Fixation of the insert 10 can - if necessary - for example by another Lock nut or in another suitable manner.
- the insert remains in place for the entire adjustment length 10 a free passage between the working chamber 5 and the first pressure medium connection 7 free. This is achieved in that the area of the end stop 11 is smaller Has diameter than the adjacent inner diameter of the cylinder housing 2, so that a kind of annular gap is thereby formed.
- the pressure medium cylinder 21 according to FIG. 2 differs from that above described pressure medium cylinder in that the end stop 22 is relatively longer is executed. This is achieved in that the seal between the insert 23 and the cylinder housing 2 is held in an annular groove in the cylinder housing 2. Furthermore, the insert 23 is here directly in the cylinder housing 2 via the one introduced here Threaded 19. Furthermore, an actuating section 20 is provided on the insert 23.
- FIG. 3 shows a detail of a pressure medium cylinder 24 with a cylinder housing 25 and a piston 26 arranged movably therein with piston rod 27.
- a stake 28 is via a thread 29 in a corresponding external thread of a bushing 23 screwed, which in turn is fixed in the cylinder housing 25.
- a Pressure medium connection 30 and a seal 31 between the insert 28 and the Cylinder housing 25 is provided.
- At an end stop 32 there is no hole for the Piston rod 27.
- This embodiment is also for a rodless cylinder or the like suitable, the piston being arranged outside the cylinder housing Carriage element communicates via power transmission means, which is sealed by the Wall of the cylinder housing are guided.
- the present invention is not limited to the preferred ones given above Embodiments.
- the adjustment and fixation of the insert on Pressure cylinder also in a suitable manner other than screwing. So locking connections or the like are also conceivable for this.
- one with a Threaded insert can be fixed with an additional lock nut, if that Thread is not already self-locking.
- sealing elements used in the illustrated embodiments can as far as static seals are concerned - either on the part of either Component or on the part of the other component to be sealed. It should be noted that the required seals provide a reliable seal in all Ensure adjustment positions of the insert. Sealing measures against Avoid thread sections.
- the invention is also applicable to pressure medium cylinders which only have one side are pressurized.
- the remaining pressure medium chamber can for example a return spring for returning the piston in a generally known manner Way.
- the piston rod to be passed through this also serves to guide the piston rod.
- the use of an additional guide bush from Be an advantage to master the larger forces that occur.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
Description
- Fig. 1
- einen Längsschnitt durch einen Druckmittelzylinder gemäß einer ersten Ausführungsform der Erfindung,
- Fig. 2
- einen Längsschnitt durch einen Druckmittelzylinder gemäß einer zweiten Ausführungsform der Erfindung, und
- Fig. 3
- eine detaillierte Schnittdarstellung eines Druckmittelzylinders gemäß einer dritten Ausführungsform der Erfindung.
Claims (10)
- Druckmittelzylinder (1; 21; 24) mit einem entlang einer Achse (A) verlaufenden Zylindergehäuse (2; 25) und einem dichtend hierin angeordneten Kolben (3; 26) zu axialen Hin- und Herbewegung infolge einer Druckmittelbeaufschlagung von mindestens einer Arbeitskammer (5) über einen Druckmittelanschluss (7; 30) zu zumindest einer Seite des Kolbens (3), und mit einer Einrichtung (10; 23; 28) zur Einstellung der Länge des Kolbens (3; 26),
dadurch gekennzeichnet, dass ein axial verschiebbarer und fixierbarer Einsatz (10; 23; 28) im Zylindergehäuse (2; 25) zur Abdichtung der Arbeitskammer (5) und Begrenzung der Axialbewegung des Kolbens (3; 26) nach Art eines Endanschlages (11; 22; 32) vorgesehen ist, dass der Druckmittelanschluss (7; 30) in der Wandung des Zylindergehäuses (2; 25) angeordnet ist, wobei der Endanschlag (11; 22; 32) einen schmaleren Endbereich als das das umgebende Zylindergehäuse (2; 25) aufweist, um durch den hierdurch gebildeten Ringspalt einen Druckmittelfluss zwischen dem Druckmittelanschluss (7; 30) und der Arbeitskammer (5) in den unterschiedlichen axialen Positionen des Einsatzes (10; 23; 28) zu bilden. - Druckmittelzylinder nach Anspruch 1,
dadurch gekennzeichnet, dass der Einsatz (10; 23; 28) eine Dichtung (14; 31) zur Abdichtung gegenüber der Wandung des Zylindergehäuses (22; 25) trägt. - Druckmittelzylinder nach Anspruch 1,
dadurch gekennzeichnet, dass das Zylindergehäuse (22; 25) eine Dichtung zur Abdichtung gegenüber dem Einsatz (23) trägt. - Druckmittelzylinder nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, dass der Einsatz (10; 23; 28) mit einem Außengewinde (15; 19; 29) zur axialen Verstellung ausgestattet ist. - Druckmittelzylinder nach Anspruch 4,
dadurch gekennzeichnet, dass der Einsatz (23) direkt in das Zylindergehäuse (2; 25) eingeschraubt ist. - Druckmittelzylinder nach Anspruch 4,
dadurch gekennzeichnet, dass der Einsatz (10; 28) indirekt in das Zylindergehäuse (2; 25) eingeschraubt ist. - Druckmittelzylinder nach Anspruch 6,
dadurch gekennzeichnet, dass der Einsatz (10; 28) indirekt über eine Gewindebuchse (16; 33) eingeschraubt ist, welche am Zylindergehäuse (2; 25) befestigt ist. - Druckmittelzylinder gemäß einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass das Zylindergehäuse (2; 25) einen kreisrunden Innenquerschnitt aufweist. - Druckmittelzylinder gemäß einem der vorstehenden Ansprüche, wobei der Kolben (3) mit einer Kolbenstange (4) verbunden ist,
dadurch gekennzeichnet, dass der Einsatz (10; 23) mit einer Durchgangsbohrung für die Kolbenstange (4) ausgerüstet ist, welche mit einer Kolbenstangendichtung (13) abgedichtet ist. - Druckmittelzylinder nach Anspruch 9,
dadurch gekennzeichnet, dass die Kolbenstangendichtung (13) axial zwischen dem freien Ende (12) des Endanschlages (11) und einer Dichtung (14) zwischen dem Einsatz (10) und dem Zylindergehäuse (2) platziert ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10153336A DE10153336A1 (de) | 2001-10-29 | 2001-10-29 | Druckmittelzylinder mit einer Einrichtung zur Verstellung des Kolbenhubs |
DE10153336 | 2001-10-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1306561A2 true EP1306561A2 (de) | 2003-05-02 |
EP1306561A3 EP1306561A3 (de) | 2004-05-12 |
Family
ID=7704092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02024402A Withdrawn EP1306561A3 (de) | 2001-10-29 | 2002-10-28 | Druckmittelzylinder mit einer Einrichtung zur Verstellung des Kolbenhubs |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1306561A3 (de) |
DE (1) | DE10153336A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10351128B4 (de) * | 2003-11-03 | 2006-07-13 | Rexroth Mecman Gmbh | Kolbenstangendichtung für einen Druckmittelzylinder |
CN103615427A (zh) * | 2013-11-27 | 2014-03-05 | 汕头市甜甜乐糖果食品有限公司 | 行程可调气缸 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011118519B4 (de) * | 2011-11-15 | 2019-10-17 | Festo Ag & Co. Kg | Fluidbetätigter Linearantrieb |
DE102022201668B3 (de) | 2022-02-17 | 2023-03-23 | Festo Se & Co. Kg | Gehäusebaugruppe und damit ausgestatteter fluidbetätigter Arbeitszylinder |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4242601A1 (de) | 1992-12-17 | 1994-06-30 | Eisenbach B Rotox Gmbh | Kolben-Zylinder-Anordnung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2222819A (en) * | 1937-11-18 | 1940-11-26 | George S Light | Hydraulic motor |
US3815480A (en) * | 1969-11-17 | 1974-06-11 | R Spyra | Variable stroke cylinder |
GB1371436A (en) * | 1973-04-18 | 1974-10-23 | Rdp Hydraulics Ltd | Hydraulic dynamic actuators |
DE3635390A1 (de) * | 1986-10-17 | 1988-04-21 | Rauma Repola Oy | Hydraulikzylinder |
US5715740A (en) * | 1996-08-22 | 1998-02-10 | Sims; James O. | Combined piston rod alignment and sealing assembly for fluid actuator cylinders |
-
2001
- 2001-10-29 DE DE10153336A patent/DE10153336A1/de not_active Ceased
-
2002
- 2002-10-28 EP EP02024402A patent/EP1306561A3/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4242601A1 (de) | 1992-12-17 | 1994-06-30 | Eisenbach B Rotox Gmbh | Kolben-Zylinder-Anordnung |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10351128B4 (de) * | 2003-11-03 | 2006-07-13 | Rexroth Mecman Gmbh | Kolbenstangendichtung für einen Druckmittelzylinder |
CN103615427A (zh) * | 2013-11-27 | 2014-03-05 | 汕头市甜甜乐糖果食品有限公司 | 行程可调气缸 |
Also Published As
Publication number | Publication date |
---|---|
EP1306561A3 (de) | 2004-05-12 |
DE10153336A1 (de) | 2005-05-19 |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7F 15B 15/14 B Ipc: 7F 15B 15/24 A |
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Effective date: 20041113 |