EP1253329A1 - Vérin à pression fluidique avec dispositif anti-rotation - Google Patents

Vérin à pression fluidique avec dispositif anti-rotation Download PDF

Info

Publication number: EP1253329A1
Authority: EP; European Patent Office
Prior art keywords: piston; adapter ring; piston element; pressure medium; pressure
Prior art date: 2001-04-24
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

EP02006632A

Other languages

German (de)

English (en)

Other versions

EP1253329B1 (fr

Inventor

Heinz-Jürgen Engelke

Norbert Dipl.-Ing. Fortmann

Thomas Dipl.-Ing. Liesenhoff

Jens Dipl.-Ing. Müller

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.)

Aventics GmbH

Original Assignee

Rexroth Mecman GmbH

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.)

2001-04-24

Filing date

2002-03-25

Publication date

2002-10-30

2002-03-25 Application filed by Rexroth Mecman GmbH filed Critical Rexroth Mecman GmbH

2002-10-30 Publication of EP1253329A1 publication Critical patent/EP1253329A1/fr

2004-08-25 Application granted granted Critical

2004-08-25 Publication of EP1253329B1 publication Critical patent/EP1253329B1/fr

2022-03-25 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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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 and compressed air can also 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.
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 ones 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 Train 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 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.

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Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Actuator (AREA)

EP02006632A 2001-04-24 2002-03-25 Vérin à pression fluidique avec dispositif anti-rotation Expired - Fee Related EP1253329B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE10120026		2001-04-24
DE10120026A DE10120026C2 (de)	2001-04-24	2001-04-24	Druckmittelzylinder mit einer Verdrehsicherung

Publications (2)

Publication Number	Publication Date
EP1253329A1 true EP1253329A1 (fr)	2002-10-30
EP1253329B1 EP1253329B1 (fr)	2004-08-25

Family

ID=7682514

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP02006632A Expired - Fee Related EP1253329B1 (fr)	2001-04-24	2002-03-25	Vérin à pression fluidique avec dispositif anti-rotation

Country Status (3)

Country	Link
US (1)	US6637316B2 (fr)
EP (1)	EP1253329B1 (fr)
DE (2)	DE10120026C2 (fr)

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* Cited by examiner, † Cited by third party
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
US10570934B2 (en) *	2014-10-02	2020-02-25	Smc Corporation	Fluidic cylinder
TW201727118A (zh) *	2015-12-18	2017-08-01	葛萊兒明尼蘇達股份有限公司	波紋管防止旋轉結構
CN108368843B (zh)	2015-12-18	2020-06-05	固瑞克明尼苏达有限公司	波纹管减压阀

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3180236A (en) *	1962-12-20	1965-04-27	Beckett Harcum Co	Fluid motor construction
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
US4896584A (en) *	1986-10-22	1990-01-30	Kurt Stoll	Piston-cylinder assembly

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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
DE8628149U1 (de) *	1986-10-22	1987-11-05	Festo KG, 7300 Esslingen	Kolben-Zylinder-Aggregat
FR2634256B1 (fr) *	1988-07-13	1992-12-31	Automax	Verin perfectionne
SE469185B (sv) *	1992-03-31	1993-05-24	Uniroc Ab	Slagkolv foer saenkborrmaskin
DE59404462D1 (de) *	1993-09-06	1997-12-04	Focke & 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 DE DE50200884T patent/DE50200884D1/de not_active Expired - Lifetime
- 2002-03-25 EP EP02006632A patent/EP1253329B1/fr not_active Expired - Fee Related
- 2002-04-24 US US10/131,514 patent/US6637316B2/en not_active Expired - Fee Related

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3180236A (en) *	1962-12-20	1965-04-27	Beckett Harcum Co	Fluid motor construction
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
US4896584A (en) *	1986-10-22	1990-01-30	Kurt Stoll	Piston-cylinder assembly

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"PISTON IS A ROTATIONAL KILLER", DESIGN ENGINEERING, MORGAN-GRAMPIAN LTD. LONDON, GB, PAGE(S) 9, ISSN: 0308-8448, XP000622148 *
PATENT ABSTRACTS OF JAPAN vol. 005, no. 076 (M - 069) 20 May 1981 (1981-05-20) *

Also Published As

Publication number	Publication date
EP1253329B1 (fr)	2004-08-25
US20020162447A1 (en)	2002-11-07
DE10120026C2 (de)	2003-04-03
US6637316B2 (en)	2003-10-28
DE10120026A1 (de)	2002-12-05
DE50200884D1 (de)	2004-09-30

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