EP1253329B1 - Druckmittelzylinder mit einer Verdrehsicherung - Google Patents
Druckmittelzylinder mit einer Verdrehsicherung Download PDFInfo
- Publication number
- EP1253329B1 EP1253329B1 EP02006632A EP02006632A EP1253329B1 EP 1253329 B1 EP1253329 B1 EP 1253329B1 EP 02006632 A EP02006632 A EP 02006632A EP 02006632 A EP02006632 A EP 02006632A EP 1253329 B1 EP1253329 B1 EP 1253329B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure cylinder
- adapter ring
- piston
- piston element
- cylinder according
- 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
- 239000012530 fluid Substances 0.000 title description 4
- 238000007789 sealing Methods 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 2
- 230000001939 inductive effect Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 239000003000 extruded plastic Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1414—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston
Definitions
- the invention relates to a pressure cylinder with an anti-rotation device, in Essentially consisting of a pressure medium cylinder tube with a non-circular one Internal cross section in which one end coaxially connected to a piston rod standing piston element is housed.
- Such pressure medium cylinders are used in particular in automation technology applied in many ways to a linear actuating force via a pressurization of the To generate piston element. Both a Hydraulic fluid as well as compressed air can be used.
- a generic pressure cylinder is known from DE 24 31 706 Al.
- the Pressure medium cylinder tube has a polygonal inner cross section, which with a Correspondingly designed pistons to form an anti-rotation device for the same outgoing piston rod cooperates. Due to the polygonal shape ensures that a torque acting on the piston rod does not cause twisting the piston rod guides what is required for certain registration cases.
- the piston rod itself is secured against rotation with a non-circular cross-section to execute, which then to prevent rotation via a corresponding sealing arrangement with a correspondingly designed opening within the cylinder cover of the Pressure cylinder cooperates.
- the pressure medium cylinder tube and the inner one Pistons can then be circular in a conventional manner.
- the piston rod usually has a polygonal or elliptical cross-sectional shape.
- Pressure medium cylinders generally known solution are two circular cross-sectional Piston rods are used, both of which are attached to the piston and spaced in parallel are guided through corresponding openings in the cylinder cover.
- Pressure medium cylinder tube and the internal piston in turn a circular Preserve cross section.
- the pressure medium cylinder tube essentially has one square cross-section and acts with a correspondingly shaped Piston element together.
- a piston rod is coaxial on the piston element by means of a Screw connection fastened. It is disadvantageous that this is secured against rotation Pressure medium cylinder can not be brought into an operating state that is not secured against rotation.
- pressure medium cylinders are usually in a non-rotation-proof as well as in offered a non-rotating variant to get out of it depending on the intended To be able to make an appropriate selection. So these two variants Appropriately trained variant-specific components can be provided required. This is usually the case with the non-rotating variant of a pressure medium cylinder the pressure medium cylinder tube and the corresponding piston are non-circular to design, whereas in the non-rotation-proof variant the conventional one circular cross section is used. There are also the ones used Adjust sealing elements and other small parts accordingly.
- the task is based on a pressure cylinder according to the preamble of Claim 1 solved in conjunction with its characterizing features.
- the dependent Claims reflect advantageous developments of the invention.
- the invention includes the technical teaching that a piston element of the Pressure cylinder has a circular cross-section and one of them connected but rotatable with respect to the piston element adapter ring element corresponding circular inner surface is surrounded, the outer Shell surface in turn corresponds to the non-circular inner cross section of the Pressure medium cylinder tube is shaped, with a means for locking the Adapter ring element is provided on the piston element.
- the anti-rotation lock should be removed are a non-rotation-proof variant of the pressure cylinder
- To provide is the means for locking the adapter ring element on the piston element just to solve.
- the function-integrated design of the invention Pressure cylinder reduces the number of components required for provision both variants considerably.
- the means for locking the adapter ring element to the piston element formed in the manner of a pin which in a radial through the piston element and the Corresponding pin bore extending adapter ring element is pluggable.
- the means for locking the adapter ring element on the piston element according to Art form at least one screw in a threaded bore on the piston element can be screwed in to clamp the adapter ring element.
- the threaded hole can also be attached in an analogous manner on the part of the adapter ring element.
- Others, too Means known to those skilled in the art to act in a positive or non-positive manner Locks can be used at this point.
- the adapter ring element Can be rotated in a form-fitting manner via a groove-shaped outer radial recess on the piston element arranged.
- This positive connection of both components is easy to manufacture and allows good rotation of the adapter ring element, while at the same time a relative axial movement is effectively avoided.
- the piston element can be constructed with two shells, with the separation in the area of groove-shaped recess is provided. Alternatively, it is also conceivable that The adapter ring element must be designed in two parts.
- the adapter ring element is preferably made of plastic and is injection molded manufactured. At least one can be made in the adapter ring element during manufacture Permanent magnet are cast in order to detect the piston position by means of a to ensure the inductive sensor attached to the outside of the pressure cylinder tube.
- at least one on the outside of the pressure medium cylinder tube to be integrally formed axially parallel fastening web, in order to such Sensor or a valve to act on the pressure medium cylinder immediately detachable Fasten.
- the web-like design of the attachment has a groove-like Training has the advantage that dirt is more difficult to attach to it than inside of grooves. This aspect is particularly important when the pressure cylinder is used of importance in the food industry, where strict hygiene regulations must be observed.
- a further measure which improves the invention, is in the range between the Piston element and the inner wall of the pressure medium cylinder tube at least one in Essentially annular sealing element arranged, which is dynamically sealing with the Interacts inner wall of the pressure medium cylinder tube and in this respect one on the non-circular Cross section adapted to the outer contour.
- the sealing element is internal radial circular to allow rotation relative to the piston element.
- there can be exactly two axially spaced apart on the piston element annular sealing elements are provided which axially the adapter ring element include, and together for dynamic sealing a double-sided Form lip seal.
- This arrangement is particularly compact Structure made of, due to the double-sided lip seal excellent dynamic Sealing properties can be achieved. That enables a relative twist and interaction of the sealing element on the piston element which offers a simultaneous hold is advantageously carried out on a circumferential retaining ring or a retaining groove Piston element.
- the pressure medium cylinder shown has a pressure medium cylinder tube 1 in which a Piston element 2 is arranged to be longitudinally displaceable. One goes from the piston element 2 Piston rod 3 from.
- the pressure medium cylinder tube 1 here consists of an extruded one Hollow profile made of metal and has an octagonal inner cross-section.
- the Pressure medium cylinder tube 1 corresponds to the piston element 2 via a rotatable Adapter ring element 4, the outer lateral surface 5 corresponding to the octagonal Inner cross section of the pressure medium cylinder tube 1 is formed.
- the adapter ring element 4 is positively via a groove-shaped outer radial recess on the piston element 2 held rotatable.
- the piston element 2 here consists of two identical half-shells and is one Screw 6 is connected at the end to the piston rod 3.
- a Permanent magnet 7 integrated in the adapter ring element 4 , so that reliable detection of the piston position by means of a sensor attached to the outside of the pressure medium cylinder tube 1 (not shown here) is possible.
- two annular sealing elements 8a, 8b arranged in the area between the piston element 4 on the one hand and the Inner wall of the pressure medium cylinder tube 1, on the other hand.
- the sealing elements 8a, 8b are form-fitting via a circumferential one Retaining ring 9 axially spaced on the piston element 4 rotatably attached.
- the sealing elements 8a, 8b come sealingly against the inner wall of the pressure medium cylinder tube 1 this area molded sealing lips to the system and have a non-circular here Outside cross section on. Both sealing rings 8a, 8b together form one double-sided lip seal.
- a non-rotating variant can block this relative rotatability.
- a pin 10 is provided, which extends radially through the piston element 2 on the one hand and the adapter ring element 4 on the other hand corresponding ones Pin hole is inserted.
- the pressure medium cylinder tube 1 has a plurality of bores 11 on its end face equipped, by means of self-tapping screws the attachment of the - not here shown - cylinder bottom element or the cylinder cover element takes place.
- Farther are on the outside of the pressure cylinder tube 1 two axially parallel to the main axis of the Pressure medium cylinder tube 1 extending mounting webs 12a, 12b formed directly to if necessary, a sensor or a valve or the like can be releasably attached to it can.
- Such fastening webs 12a, 12b can also on other side surfaces of the Pressure medium cylinder tube 1 are provided.
- the pressure medium cylinder itself is fixable here.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Description
- Figur 1
- einen Längsschnitt durch einen erfindungsgemäß ausgebildeten Druckmittelzylinder, und
- Figur 2
- einen Querschnitt durch den Druckmittelzylinder gemäß Figur 1 entlang des Schnitts D-D.
- 1
- Druckmittelrohr
- 2
- Kolbenelement
- 3
- Kolbenstange
- 4
- Adapterringelement
- 5
- Mantelfläche
- 6
- Schraube
- 7
- Permanentmagnet
- 8
- Dichtelement
- 9
- Haltering
- 10
- Stift
- 11
- Bohrung
- 12
- Befestigungssteg
Claims (13)
- Druckmittelzylinder mit einer Verdrehsicherung, im wesentlichen bestehend aus einem Druckmittelzylinderrohr (1) mit nicht-kreisförmigem Innenquerschnitt, in dem ein endseitig mit einer Kolbenstange (3) koaxial in Verbindung stehendes Kolbenelement (2) abgedichtet untergebracht ist,
dadurch gekennzeichnet, dass das Kolbenelement (2) einen kreisförmigen Querschnitt besitzt und von einem hiermit verbundenen, jedoch bezüglich des Kolbenelements (2) verdrehbaren Adapterringelement (4) mit korrespondierender kreisförmiger innerer Mantelfläche umgeben ist, dessen äußere Mantelfläche (5) korrespondierend zum nicht-kreisförmigen Innenquerschnitt des Druckmittelzylinderrohrs (1) geformt ist, wobei ein lösbares Mittel zum Arretieren des Adapterringelements (4) am Kolbenelement (2) vorgesehen ist, um sowohl eine verdrehgesicherte als auch eine nicht-verdrehgesicherte Variante zu realisieren. - Druckmittelzylinder nach Anspruch 1,
dadurch gekennzeichnet, dass das Mittel zum Arretieren das Adapterringelements (4) am Kolbenelement (2) nach Art eines Stifts (10) ausgebildet ist, der in eine radiale durch das Kolbenelement (2) sowie das Adapterringelement (4) verlaufende korrespondierende Stiftbohrung steckbar ist, um eine relative Verdrehung des Adapterringelements (4) zum Kolbenelement (2) zu verhindern. - Druckmittelzylinder nach Anspruch 2,
dadurch gekennzeichnet, dass zum Arretieren des Adapterringelements (4) am Kolbenelement (2) genau zwei Stifte (10', 10") mit einander beabstandet angeordneten korrespondierenden Stiftbohrungen vorgesehen sind. - Druckmittelzylinder nach Anspruch 1,
dadurch gekennzeichnet, dass das Mittel zum Arretieren das Adapterringelements (4) am Kolbenelement (2) nach Art einer Schraube ausgebildet ist, die in eine Gewindebohrung am Kolbenelement (2) einschraubbar ist, um das Adapterringelement (4) zu klemmen. - Druckmittelzylinder nach Anspruch 1,
dadurch gekennzeichnet, dass das Adapterringelement (4) über eine nutförmige außenradiale Ausnehmung am Kolbenelement (2) formschlüssig verdrehbar angeordnet ist. - Druckmittelzylinder nach Anspruch 1,
dadurch gekennzeichnet, dass in dem Adapterringelement (4) mindestens ein Permanentmagnet (7) integriert ist, um eine Detektion der Kolbenstellung mittels eines außen am Druckmittelzylinderrohr (1) angebrachten induktiven Sensors zu gewährleisten. - Druckmittelzylinder nach Anspruch 1,
dadurch gekennzeichnet, dass im Bereich zwischen dem Kolbenelement (2) und der Innenwandung des Druckmittelzylinderrohrs (1) mindestens ein im wesentlichen ringförmiges Dichtelement (8a, 8b) angeordnet ist, das verdrehbar am Kolbenelement (2) gehalten ist und dynamisch dichtend mit der Innenwandung des Druckmittelzylinderrohrs (1) zusammenwirkt. - Druckmittelzylinder nach Anspruch 7,
dadurch gekennzeichnet, dass genau zwei auf dem Kolbenelement (2) axial beabstandet angeordnete ringförmige Dichtelemente (8a, 8b) vorgesehen sind, die das Adapterringelement (4) einschließen, und die zur dynamischen Abdichtung gemeinsam eine doppelseitige Lippendichtung bilden. - Druckmittelzylinder nach Anspruch 7,
dadurch gekennzeichnet, dass eine die Verdrehbarkeit ermöglichende formschlüssige Verbindung des Dichtelements (8a, 8b) am Kolbenelement (2) über einen umlaufenden Haltering (9) oder eine Haltenut am Kolbenelement (2) erfolgt. - Druckmittelzylinder nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass das Druckmittelzylinderrohr (1) aus einem extrudierten Hohlprofil aus Kunststoff oder Metall besteht. - Druckmittelzylinder nach Anspruch 10,
dadurch gekennzeichnet, dass außen am Druckmittelzylinderrohr (1) mindestens ein achsparallel verlaufender Befestigungssteg (12a, 12b) angeformt ist, um hieran einen Sensor oder ein Ventil lösbar zu befestigen. - Druckmittelzylinder nach Anspruch 10,
dadurch gekennzeichnet, dass das Druckmittelzylinderrohr (1) an den beiden endseitigen Stirnflächen mit mehreren Bohrungen (11) ausgestattet ist, worüber mittels selbstschneidender Schrauben die Befestigung eines Zylinderbodenelements bzw. eines Zylinderdeckelelements erfolgt. - Druckmittelzylinder nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass der Adapterring (4) im Spritzgießverfahren aus Kunststoff hergestellt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10120026A DE10120026C2 (de) | 2001-04-24 | 2001-04-24 | Druckmittelzylinder mit einer Verdrehsicherung |
DE10120026 | 2001-04-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1253329A1 EP1253329A1 (de) | 2002-10-30 |
EP1253329B1 true EP1253329B1 (de) | 2004-08-25 |
Family
ID=7682514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02006632A Expired - Lifetime EP1253329B1 (de) | 2001-04-24 | 2002-03-25 | Druckmittelzylinder mit einer Verdrehsicherung |
Country Status (3)
Country | Link |
---|---|
US (1) | US6637316B2 (de) |
EP (1) | EP1253329B1 (de) |
DE (2) | DE10120026C2 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8544699B2 (en) * | 2010-01-12 | 2013-10-01 | Graco Minnesota Inc. | Non-rotating single post ram for inductor pump |
US8308800B2 (en) | 2010-04-09 | 2012-11-13 | Chu Milton W | Intraocular lenses with high contrast haptics, materials, and methods |
DE102010024847A1 (de) * | 2010-06-23 | 2011-12-29 | Thyssenkrupp Presta Ag | Rotatorisch abgestützte Lenkspindel |
DE102011080504B4 (de) * | 2011-08-05 | 2020-10-15 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Spannvorrichtung und Palettenhandlingssystem |
DE102011080502B4 (de) * | 2011-08-05 | 2015-03-12 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Spannvorrichtung und Palettenhandlingssystem |
US20130180813A1 (en) * | 2012-01-13 | 2013-07-18 | Eustace Moore, JR. | Fluid-filled shock absorber |
US9277988B1 (en) | 2013-03-15 | 2016-03-08 | Milton W. Chu | Intraocular lenses with quantum dots |
RU2678603C9 (ru) * | 2014-10-02 | 2019-07-22 | СМСи КОРПОРЕЙШН | Гидро(пневмо)цилиндр |
KR20180086274A (ko) | 2015-12-18 | 2018-07-30 | 그라코 미네소타 인크. | 벨로우즈 압력 릴리프 밸브 |
EP3390824B1 (de) * | 2015-12-18 | 2020-09-30 | Graco Minnesota Inc. | Drehverhinderungskonstruktion für faltenbalg |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3180236A (en) * | 1962-12-20 | 1965-04-27 | Beckett Harcum Co | Fluid motor construction |
DE2431706A1 (de) * | 1974-07-02 | 1976-01-22 | Festo Maschf Stoll G | Arbeitszylinder fuer pneumatische und hydraulische medien |
JPS5610804A (en) * | 1979-07-05 | 1981-02-03 | Norioki Kuwabara | Cylinder device |
JPS5624203A (en) * | 1979-07-31 | 1981-03-07 | Norioki Kuwabara | Cylinder device |
DE3241233A1 (de) * | 1982-11-09 | 1984-05-10 | Johannes 7953 Bad Schussenried Falkenstein | Antriebsaggregat fuer druckmittelantriebe |
DE8628149U1 (de) * | 1986-10-22 | 1987-11-05 | Festo KG, 7300 Esslingen | Kolben-Zylinder-Aggregat |
CH674058A5 (de) * | 1986-10-22 | 1990-04-30 | Festo Kg | |
FR2634256B1 (fr) * | 1988-07-13 | 1992-12-31 | Automax | Verin perfectionne |
SE9200995L (sv) * | 1992-03-31 | 1993-05-24 | Uniroc Ab | Slagkolv foer saenkborrmaskin |
EP0643002B1 (de) * | 1993-09-06 | 1997-10-29 | Focke & Co. (GmbH & Co.) | Handhabungsvorrichtung mit Teleskopteil |
DE4403639A1 (de) * | 1994-02-05 | 1995-08-10 | Festo Kg | Fluidisch betätigbare Vorschubeinheit |
IT1295050B1 (it) * | 1997-09-23 | 1999-04-27 | Luciano Migliori | Attuatore pneumatico telescopico a doppio effetto |
-
2001
- 2001-04-24 DE DE10120026A patent/DE10120026C2/de not_active Expired - Fee Related
-
2002
- 2002-03-25 EP EP02006632A patent/EP1253329B1/de not_active Expired - Lifetime
- 2002-03-25 DE DE50200884T patent/DE50200884D1/de not_active Expired - Lifetime
- 2002-04-24 US US10/131,514 patent/US6637316B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE50200884D1 (de) | 2004-09-30 |
US6637316B2 (en) | 2003-10-28 |
DE10120026C2 (de) | 2003-04-03 |
US20020162447A1 (en) | 2002-11-07 |
DE10120026A1 (de) | 2002-12-05 |
EP1253329A1 (de) | 2002-10-30 |
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