EP1178220A2 - Vérin pneumatique pour réaliser un mouvement de sortie constant, lent et linéaire - Google Patents

Vérin pneumatique pour réaliser un mouvement de sortie constant, lent et linéaire Download PDF

Info

Publication number
EP1178220A2
EP1178220A2 EP01117675A EP01117675A EP1178220A2 EP 1178220 A2 EP1178220 A2 EP 1178220A2 EP 01117675 A EP01117675 A EP 01117675A EP 01117675 A EP01117675 A EP 01117675A EP 1178220 A2 EP1178220 A2 EP 1178220A2
Authority
EP
European Patent Office
Prior art keywords
piston
pneumatic cylinder
bellows
cylinder according
damped pneumatic
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Withdrawn
Application number
EP01117675A
Other languages
German (de)
English (en)
Other versions
EP1178220A3 (fr
Inventor
Heinz-Hermann Dipl.-Ing. Meyer
Rudolf Dipl.-Ing. Möller
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.)
Filing date
Publication date
Application filed by Rexroth Mecman GmbH filed Critical Rexroth Mecman GmbH
Publication of EP1178220A2 publication Critical patent/EP1178220A2/fr
Publication of EP1178220A3 publication Critical patent/EP1178220A3/fr
Withdrawn legal-status Critical Current

Links

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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/072—Combined pneumatic-hydraulic systems
    • F15B11/076—Combined pneumatic-hydraulic systems with pneumatic drive or displacement and speed control or stopping by hydraulic braking
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve
    • F15B2211/41536—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve being connected to multiple ports of an output member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/455—Control of flow in the feed line, i.e. meter-in control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75—Control of speed of the output member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/885—Control specific to the type of fluid, e.g. specific to magnetorheological fluid
    • F15B2211/8855—Compressible fluids, e.g. specific to pneumatics

Definitions

  • the invention relates to a damped pneumatic cylinder for generating a constant slow linear drive movement according to the preamble of Claim 1.
  • the pneumatic cylinder is usually made of one Compressed air connections provided closed cylinder housing formed inside which a piston is arranged to be longitudinally movable with a piston rod Transmission of the linear drive movement is connected to the outside.
  • a hydraulic damper unit is used for the drive movement the piston rod of the pneumatic cylinder is operatively connected.
  • the invention includes the technical teaching that the hydraulic damper unit is arranged within the cylinder housing of the pneumatic cylinder and two with a hydraulic fluid filled bellows, which is on both sides of a stationary are arranged with respect to the cylinder housing arranged central partition.
  • the Partition wall has a throttle opening for overflowing the hydraulic fluid on, the distal ends of the two bellows by the pressurized air Pistons of the double-acting pneumatic cylinder are closed.
  • the solution according to the invention has the advantage that this special arrangement the bellows on dynamic seals to the pneumatic part and to the outside completely can be dispensed with, so that leak-free operation of the damper unit is ensured.
  • An outer radial seal on the piston opposite the The inner wall of the cylinder housing is also not necessary. Since the Damper unit in cooperation with the parts of the Pneumatic cylinder does not include any components that cause friction, is the between the pneumatic cylinder that can be pressurized with air and the damper unit Minimal friction.
  • the pneumatic cylinder according to the invention also consists of few individual parts that are easy to manufacture and assemble. The damper unit can be preassembled effectively and with the hydraulic fluid must be completely filled before they can be filled with components that can be pressurized with compressed air is assembled.
  • the throttle opening is from a throttle element adjustable in cross section. Due to the adjustability of the cross-section can change the speed of the piston rod and so far can be flexibly set to a desired parameter.
  • the bellows preferably consists of a thin-walled metallic material.
  • a screw plug is provided on at least one piston.
  • the Locking screw can be particularly effective by the be formed inside the cylinder end of the piston rod, which is coaxial in the piston can be screwed in sealed and in this respect in terms of functional integration at the same time as the piston is attached, the screw plug for the of the hydraulic fluid filled space.
  • To vent the with Hydraulic fluid-filled space can favor the interior of the room Bellows facing side of the piston tapered towards the Leak the screw plug.
  • the bellows can be attached to the middle partition as well as to the piston via welding, gluing, a sealed clamp connection or the like.
  • the partition can be used inside the cylinder housing and held here - for example via a pressed-in bead - or as a flange between two cylinder housing sections or in any other suitable manner to be ordered.
  • This guide ring has the Task to avoid buckling of the bellows during the lifting movement.
  • piston connecting rod provided by the partition is passed through.
  • the seal of the piston connecting rod needs not to be done reliably because the hydraulic fluid via the Throttle opening flows.
  • the power transmission between the two pistons is done solely by the hydraulic fluid.
  • a piston associated with the piston rod can be on the inside End stop are provided with the partition to limit the Stroke movement interacts.
  • the piston rod facing away from a sealed by the cylinder bottom guided rod section are provided, which is attached coaxially to the piston.
  • the rod section can be extended to a second piston rod if this is required by an application.
  • a double-acting damped pneumatic cylinder consists of essentially from a cylinder housing 1, which has a cylinder bottom 2 and a cylinder cover 3 is closed.
  • a compressed air connection 4a and 4b is provided on the cylinder base 2 and on the cylinder cover 3.
  • a piston assembly longitudinally movable within the cylinder housing 1 can be acted upon to generate a linear drive movement.
  • the piston assembly consists of two pistons 6a and 2 arranged on both sides of a partition 5 6b with a piston rod 7 for transmitting the linear drive movement are connected.
  • the piston rod 7 in turn is hydraulic Damper unit in operative connection to a short-stroke damped, d. H.
  • the Damper unit arranged within the cylinder housing 1 comprises two with one Hydraulic fluid filled bellows 8a and 8b on either side of the middle Partition 5 are fixed by welding.
  • the distal ends of the two Bellows 8a and 8b are used to form a closed space for the Hydraulic fluid through the pressurized pistons 6a and 6b locked.
  • the bellows 8a and 8b are fastened on the piston side here also by welding.
  • a throttle opening 9 is introduced into the partition 5.
  • the cross section of the Throttle opening 9 determines the degree of damping of the generated Drive movement.
  • the locking screw 10a is directly through the cylinder side End of the piston rod 7 is formed, which can be screwed coaxially into the piston 6a.
  • In the central region of each bellows 8a and 8b is a with the inner wall of the Cylinder housing 1 leading, d. H. non-sealing, interacting guide ring 11a and 11b are provided.
  • the guide rings 11a and 11b prevent buckling of the associated bellows 8a or 8b in the middle region at risk.
  • the partition 5 is in this embodiment in the manner of an intermediate flange formed, which connects two cylinder housing sections 12a and 12b with each other.
  • the piston rod (not here shown) facing away from the piston 6b coaxially a rod section 14.
  • the rod section 14 is sealed by a corresponding recess passed in the cylinder bottom 2a.
  • the rod section 14 serves as Guide the piston 6b, so that the piston 6b itself is not on the inner wall of the Cylinder housing 1 is to be performed. If necessary, the rod section 14 can be closed an additional piston rod can be extended.
  • the force transmission takes place between the two pistons 6a and 6b without an intermediate piston connecting rod, i.e. solely because of the Hydraulic fluid, so in this embodiment is on the inside of the An end stop 15 is provided for piston rod 7 associated with piston 6a.
  • the End stop 15 acts with the partition 5 to limit the piston stroke movement together. In the other direction of movement, the piston stroke movement is complete Stop of the piston 6a limited to the piston cover 3.
  • the damped pneumatic cylinder designed according to the invention allows one Leakage-free damping of the linear movement that can be generated with this, for this purpose only a small number of components is required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Damping Devices (AREA)
EP01117675A 2000-08-02 2001-07-26 Vérin pneumatique pour réaliser un mouvement de sortie constant, lent et linéaire Withdrawn EP1178220A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000138734 DE10038734C2 (de) 2000-08-02 2000-08-02 Gedämpfter Pneumatikzylinder zur Erzeugung einer konstanten langsamen linearen Antriebsbewegung
DE10038734 2000-08-02

Publications (2)

Publication Number Publication Date
EP1178220A2 true EP1178220A2 (fr) 2002-02-06
EP1178220A3 EP1178220A3 (fr) 2004-01-02

Family

ID=7651761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01117675A Withdrawn EP1178220A3 (fr) 2000-08-02 2001-07-26 Vérin pneumatique pour réaliser un mouvement de sortie constant, lent et linéaire

Country Status (2)

Country Link
EP (1) EP1178220A3 (fr)
DE (1) DE10038734C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7565859B2 (en) 2006-04-25 2009-07-28 Smc Corporation Of America Power clamp with kinetic energy control
CN103438050A (zh) * 2013-09-02 2013-12-11 山西北方机械制造有限责任公司 一种卸荷后缓冲的油缸装置
CN110000743A (zh) * 2019-03-05 2019-07-12 上海交通大学 一种可扩展式多点协调的柔性操作平台

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007050013A1 (de) 2006-10-18 2008-08-21 Glinberg, Valeriy, Dipl.-Ing. Langhubiger Zylinder
DE102011078820A1 (de) 2011-07-07 2013-01-10 Siemens Aktiengesellschaft Pneumatischer Stellantrieb mit hydraulischer Dämpfung
DE102021120420A1 (de) 2021-08-05 2023-02-09 Herbert Valtiner Vorrichtung zum Umwandeln einer Rotationsbewegung in eine Translationsbewegung und zugehörige Anordnung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7719188U1 (fr) * S.A. Francaise Du Ferodo, Paris
US1437666A (en) * 1920-10-04 1922-12-05 Deere & Co Pitman connection
US3176801A (en) * 1962-10-12 1965-04-06 Northrop Corp Precision motion control device
US3687013A (en) * 1970-12-23 1972-08-29 Hans R Haller Hydraulic speed control for air cylinders
GB9116842D0 (en) * 1991-08-05 1991-09-18 Nat Oilwell Uk Ltd An actuator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7565859B2 (en) 2006-04-25 2009-07-28 Smc Corporation Of America Power clamp with kinetic energy control
CN103438050A (zh) * 2013-09-02 2013-12-11 山西北方机械制造有限责任公司 一种卸荷后缓冲的油缸装置
CN103438050B (zh) * 2013-09-02 2015-11-25 山西北方机械制造有限责任公司 一种卸荷后缓冲的油缸装置
CN110000743A (zh) * 2019-03-05 2019-07-12 上海交通大学 一种可扩展式多点协调的柔性操作平台

Also Published As

Publication number Publication date
EP1178220A3 (fr) 2004-01-02
DE10038734A1 (de) 2002-02-21
DE10038734C2 (de) 2002-11-21

Similar Documents

Publication Publication Date Title
DE102007030006B4 (de) Vakuumventil
DE10261591B4 (de) Dämpfungsvorrichtung
DE1803417C3 (de) Zug- und Stoßvorrichtung für Eisenbahnwagen
EP0253072A2 (fr) Ressort à gaz avec butée de fin de course
DE2932131A1 (de) Daempfungsvorrichtung
DE69118860T2 (de) Hydraulische selbstregelvorrichtung für kupplungsbetätigungskabel
DE69635342T2 (de) Gasfederanlage
DE2026756A1 (de) Hauptzylinder für hydraulische Bremsanlagen von Fahrzeugen
DE2905030B2 (de) Endanschlaggedämpfte Gasfeder
DE69007406T2 (de) Kolben für Druckzylinder.
DE10038734C2 (de) Gedämpfter Pneumatikzylinder zur Erzeugung einer konstanten langsamen linearen Antriebsbewegung
EP3243986B1 (fr) Dispositif de maintien
DE3546236A1 (de) Gasfeder mit endlagendaempfung
DE3920293A1 (de) Kolben-zylinder-aggregat
EP1215412A2 (fr) Unité piston-cylindre avec unité de réglage
EP0080579A1 (fr) Dispositif de freinage en fin de course d'un piston de cylindre à double effet
DE19953901A1 (de) Federungseinrichtung
DE4420474C2 (de) Gaszugfeder
EP1293633A2 (fr) Ferme-porte
DE10158123B4 (de) Endlagengedämpfter Druckmittelzylinder
DE19532510A1 (de) Teleskopschwingungsdämpfer, insbesondere für Kraftfahrzeuge
DE102004026356B4 (de) Zugfederanordnung
DE3900817A1 (de) Gasfeder
EP0080565A2 (fr) Dispositif amortisseur fin de course pour un piston d'un vérin à double effet
DE3820078A1 (de) Hydrozylinder

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040703