EP0914896A3 - Piston-cylinder for welding gun - Google Patents

Piston-cylinder for welding gun Download PDF

Info

Publication number
EP0914896A3
EP0914896A3 EP98119668A EP98119668A EP0914896A3 EP 0914896 A3 EP0914896 A3 EP 0914896A3 EP 98119668 A EP98119668 A EP 98119668A EP 98119668 A EP98119668 A EP 98119668A EP 0914896 A3 EP0914896 A3 EP 0914896A3
Authority
EP
European Patent Office
Prior art keywords
piston
stroke
cylinder
working
preliminary
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Withdrawn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
EP98119668A
Other languages
German (de)
French (fr)
Other versions
EP0914896A2 (en
Inventor
Paul Gerhard Nickel
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.)
NIMAK Automatisierte Schweisstechnik GmbH
Original Assignee
NIMAK Automatisierte Schweisstechnik 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 NIMAK Automatisierte Schweisstechnik GmbH filed Critical NIMAK Automatisierte Schweisstechnik GmbH
Publication of EP0914896A2 publication Critical patent/EP0914896A2/en
Publication of EP0914896A3 publication Critical patent/EP0914896A3/en
Withdrawn legal-status Critical Current

Links

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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
    • 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
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7055—Linear output members having more than two chambers

Landscapes

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

Abstract

Die erfindungsgemäße Kolben-Zylinder-Anordnung führt insbesondere zum Antrieb einer Schweißzangenelektrode (1) einen aus einem Vorhub und einem Arbeitshub bestehenden Doppelhub durch und besteht aus einem Zylinder (2), einem in dem Zylinder (2) geführten Vorhub-Hohlkolben (3), sowie einem in dem Vorhub-Hohlkolben (3) geführten, mit einer Kolbenstange (4) verbundenen Arbeitskolben (5), wobei zwischen dem Vorhub-Hohlkolben (3) und einem Zylinderkopf (6) ein erster Druckraum (7), zwischen dem Vorhub-Hohlkolben (3) und dem Arbeitskolben (5) ein zweiter Druckraum (8) und zwischen der aus dem Arbeitskolben (5) und dem Vorhub-Hohlkolben (3) gebildeten Kolbenanordnung (9) und einem Zylinderboden (10) ein dritter Druckraum (11) gebildet ist. Die Druckräume (7, 8, 11) sind wahlweise mit einem Druckmedium beaufschlagbar. Zur Verkürzung der Taktzeit eines Doppelhubes ist ein, zumindest teilweise, zwischen dem Vorhub-Hohlkolben (3) und dem Arbeitskolben (5) angeordneter, wahlweise mit dem Druckmedium beaufschlagbarer, vierter Druckraum (12) für den Rückhub des Arbeitskolbens (5) vorgesehen.

Figure 00000001
The piston-cylinder arrangement according to the invention performs, in particular for driving a welding gun electrode (1), a double stroke consisting of a preliminary stroke and a working stroke and consists of a cylinder (2), a preliminary stroke hollow piston (3) guided in the cylinder (2), and a working piston (5) guided in the preliminary stroke hollow piston (3) and connected to a piston rod (4), a first pressure chamber (7) between the preliminary stroke hollow piston (3) and a cylinder head (6), between the preliminary stroke Hollow piston (3) and the working piston (5) a second pressure chamber (8) and between the piston arrangement (9) formed from the working piston (5) and the preliminary stroke hollow piston (3) and a cylinder base (10) a third pressure chamber (11) is formed. The pressure chambers (7, 8, 11) can be optionally supplied with a pressure medium. In order to shorten the cycle time of a double stroke, a fourth pressure chamber (12) is arranged, at least partially, between the preliminary stroke hollow piston (3) and the working piston (5), which can optionally be pressurized with the pressure medium, for the return stroke of the working piston (5).
Figure 00000001
EP98119668A 1997-10-25 1998-10-17 Piston-cylinder for welding gun Withdrawn EP0914896A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997147298 DE19747298A1 (en) 1997-10-25 1997-10-25 Welding gun cylinder
DE19747298 1997-10-30

Publications (2)

Publication Number Publication Date
EP0914896A2 EP0914896A2 (en) 1999-05-12
EP0914896A3 true EP0914896A3 (en) 1999-12-15

Family

ID=7846689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98119668A Withdrawn EP0914896A3 (en) 1997-10-25 1998-10-17 Piston-cylinder for welding gun

Country Status (2)

Country Link
EP (1) EP0914896A3 (en)
DE (1) DE19747298A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6386508B1 (en) * 2000-06-05 2002-05-14 D-M-E Company Actuator having dual piston surfaces
ITUD20010039A1 (en) * 2001-02-28 2002-08-28 I R Oss Srl FLUID PRESSURE DIFFERENTIATED THRUST LINEAR ACTUATOR CONSISTING OF COAXIAL CYLINDERS
FR2865950B1 (en) * 2004-02-06 2007-04-20 Finuchem Technologies De Souda WELDING CLAMP CYLINDER WITH DOUBLE RUN.
SI22050B (en) * 2005-06-01 2009-04-30 Tajfun Planina Proizvodnja Strojev D.O.O. Driving and controlling unit of device for splitting firewood and controlling procedure for this kind of device
US8065930B2 (en) * 2008-03-26 2011-11-29 GM Global Technology Operations LLC Hydraulic actuator for transmissions having reduced noise
EP2829479A1 (en) 2013-07-23 2015-01-28 Cryovac, Inc. Packaging apparatus comprising actuator and method of operating packaging apparatus
CN113389767A (en) * 2021-07-23 2021-09-14 中国科学院合肥物质科学研究院 Double-acting pneumatic actuator with long-stroke large-cylinder-diameter structure and control system thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992017311A1 (en) * 1991-04-05 1992-10-15 Machinefabriek Sempress B.V. Integrated double drive cylinder
EP0715925A1 (en) * 1994-12-10 1996-06-12 NIMAK Automatisierte Schweisstechnik GmbH Drive cylinder for a welding device
US5789719A (en) * 1991-05-02 1998-08-04 Milco Manufacturing Co. Method and apparatus for electrical resistance spot welding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992017311A1 (en) * 1991-04-05 1992-10-15 Machinefabriek Sempress B.V. Integrated double drive cylinder
US5789719A (en) * 1991-05-02 1998-08-04 Milco Manufacturing Co. Method and apparatus for electrical resistance spot welding
EP0715925A1 (en) * 1994-12-10 1996-06-12 NIMAK Automatisierte Schweisstechnik GmbH Drive cylinder for a welding device

Also Published As

Publication number Publication date
DE19747298A1 (en) 1999-04-29
EP0914896A2 (en) 1999-05-12

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