EP1998054A3 - Pneumatic cylinder with self-adjusting cushioning at the end of stroke and corresponding method - Google Patents

Pneumatic cylinder with self-adjusting cushioning at the end of stroke and corresponding method Download PDF

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Publication number
EP1998054A3
EP1998054A3 EP08156234A EP08156234A EP1998054A3 EP 1998054 A3 EP1998054 A3 EP 1998054A3 EP 08156234 A EP08156234 A EP 08156234A EP 08156234 A EP08156234 A EP 08156234A EP 1998054 A3 EP1998054 A3 EP 1998054A3
Authority
EP
European Patent Office
Prior art keywords
cylinder
damping
channel
pressure
displacement
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.)
Granted
Application number
EP08156234A
Other languages
German (de)
French (fr)
Other versions
EP1998054A2 (en
EP1998054B1 (en
Inventor
Christian Bruder
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Parker Origa Holding AG
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Parker Origa Holding AG
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Filing date
Publication date
Priority claimed from AT8282007A external-priority patent/AT504592B1/en
Application filed by Parker Origa Holding AG filed Critical Parker Origa Holding AG
Publication of EP1998054A2 publication Critical patent/EP1998054A2/en
Publication of EP1998054A3 publication Critical patent/EP1998054A3/en
Application granted granted Critical
Publication of EP1998054B1 publication Critical patent/EP1998054B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/223—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which completely seals the main fluid outlet as the piston approaches its end position

Abstract

Pneumatikzylinder werden häufig mit Endlagendämpfungen ausgeführt, um zu vermeiden, dass der Zylinderkolben an einen Anschlag anschlägt und damit der Zylinder oder die Maschine in die der Zylinder eingebaut ist beschädigt wird. Solche Endlagendämpfungen müssen dabei bei Inbetriebnahme des Zylinders eingestellt werden und dämpfen dann nur für eine bestimmte Konfiguration von Masse, kinetischer Energie und Geschwindigkeit optimal. Die gegenständliche Erfindung schlägt daher eine selbsteinstellende Endlagendämpfung vor, die einen Hubraum (9) umfasst, der von einem beweglichen Hubelement (7, 24) und einem Teil des Pneumatikzylinders (1) begrenzt ist, wobei der Hubraum (9) über einen Verbindungskanal (14) mit dem den Zylinderkolben (22) beaufschlagenden Arbeitsdruck (p1) oder dem im Auslasskanal (3) anliegenden Entlüftungsdruck (p3) verbunden ist und das Hubelement (7, 24) über einen Dämpfkanal (16) vom Dämpfdruck (p2) im Dämpfvolumen (19) beaufschlagt ist, im Verbindungskanal (14) vor dem Hubraum (9) ein Rückschlagventil (12) angeordnet ist, das in Richtung des Arbeitsdruckes (p1) bzw. des Entlüftungsdruckes (p3) sperrt und ein Entlüftungskanal (5) vorgesehen ist, der mit dem beweglichen Hubelement (7, 24) öffenbar ist und der mit einem Auslasskanal (3) verbunden ist.

Figure imgaf001
Pneumatic cylinders are often designed with end position dampers to prevent the cylinder piston from abutting a stop and damaging the cylinder or machine into which the cylinder is mounted. Such Endlagendämpfungen must be set during commissioning of the cylinder and then attenuate optimally only for a particular configuration of mass, kinetic energy and speed. The subject invention therefore proposes a self-adjusting end position damping, which comprises a displacement (9) which is bounded by a movable lifting element (7, 24) and a part of the pneumatic cylinder (1), wherein the displacement (9) via a connecting channel (14 ) is connected to the working pressure (p 1 ) acting on the cylinder piston (22) or to the venting pressure (p 3) present in the outlet duct ( 3 ) and the lifting element (7, 24) via a damping channel (16) from the damping pressure (p 2 ) in FIG Damping volume (19) is acted upon, in the connecting channel (14) in front of the displacement (9) a check valve (12) is arranged, which blocks in the direction of the working pressure (p 1 ) or the venting pressure (p 3 ) and a venting channel (5). is provided, which is openable with the movable lifting element (7, 24) and which is connected to an outlet channel (3).
Figure imgaf001
EP08156234.0A 2007-05-24 2008-05-15 Pneumatic cylinder with self-adjusting cushioning at the end of stroke and corresponding method Not-in-force EP1998054B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT8282007A AT504592B1 (en) 2007-05-24 2007-05-24 Piston-rod-less pneumatic cylinder, has stroke elements acted on damping duct, where ventilation duct to be opened by stroke elements, where stroke element connected to outlet duct
AT7142008A AT505441B1 (en) 2007-05-24 2008-05-05 PNEUMATIC CYLINDER WITH A METHOD AND DEVICE FOR SELF-ADJUSTING SUPPLEMENTAL DAMPING

Publications (3)

Publication Number Publication Date
EP1998054A2 EP1998054A2 (en) 2008-12-03
EP1998054A3 true EP1998054A3 (en) 2012-08-15
EP1998054B1 EP1998054B1 (en) 2014-08-13

Family

ID=39829770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08156234.0A Not-in-force EP1998054B1 (en) 2007-05-24 2008-05-15 Pneumatic cylinder with self-adjusting cushioning at the end of stroke and corresponding method

Country Status (2)

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US (1) US8596431B2 (en)
EP (1) EP1998054B1 (en)

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CN103104572A (en) * 2012-12-11 2013-05-15 江苏锐成机械有限公司 Collision-proof hydraulic cylinder for high-speed machine tool
US20150076753A1 (en) * 2013-09-19 2015-03-19 Dadco, Inc. Overtravel Pressure Relief For A Gas Spring
US9447834B2 (en) * 2013-09-19 2016-09-20 Dadco, Inc. Overtravel pressure relief for a gas spring
CN103821790A (en) * 2013-11-29 2014-05-28 安徽凯信机电科技有限公司 Hydraulic cylinder with buffering mechanism
DE102016002705A1 (en) * 2016-03-05 2017-09-07 Wabco Gmbh Pneumatic switching device of an automated manual transmission
JP7447689B2 (en) * 2020-06-10 2024-03-12 Smc株式会社 gas cylinder

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Also Published As

Publication number Publication date
US20080289920A1 (en) 2008-11-27
EP1998054A2 (en) 2008-12-03
EP1998054B1 (en) 2014-08-13
US8596431B2 (en) 2013-12-03

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