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EP1163979B1 - Pneumatically operated precision pliers - Google Patents

Pneumatically operated precision pliers Download PDF

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Publication number
EP1163979B1
EP1163979B1 EP00112559A EP00112559A EP1163979B1 EP 1163979 B1 EP1163979 B1 EP 1163979B1 EP 00112559 A EP00112559 A EP 00112559A EP 00112559 A EP00112559 A EP 00112559A EP 1163979 B1 EP1163979 B1 EP 1163979B1
Authority
EP
European Patent Office
Prior art keywords
piston
pliers
seal
piston rod
tool
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
Application number
EP00112559A
Other languages
German (de)
French (fr)
Other versions
EP1163979A1 (en
Inventor
Peter Winterhalter
Ulrich Meier
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.)
Oetiker Schweiz AG
Original Assignee
Hans Oetiker AG Maschinen und Apparatefabrik
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
Priority to ES00112559T priority Critical patent/ES2275461T3/en
Application filed by Hans Oetiker AG Maschinen und Apparatefabrik filed Critical Hans Oetiker AG Maschinen und Apparatefabrik
Priority to EP00112559A priority patent/EP1163979B1/en
Priority to PT00112559T priority patent/PT1163979E/en
Priority to DK00112559T priority patent/DK1163979T3/en
Priority to AT00112559T priority patent/ATE345196T1/en
Priority to DE50013754T priority patent/DE50013754D1/en
Priority to JP2002510237A priority patent/JP4918208B2/en
Priority to CZ20024033A priority patent/CZ298243B6/en
Priority to US10/311,365 priority patent/US7107814B2/en
Priority to HK03109392.2A priority patent/HK1057022B/en
Priority to CNB018111629A priority patent/CN1264650C/en
Priority to MXPA02011998A priority patent/MXPA02011998A/en
Priority to CA002412234A priority patent/CA2412234C/en
Priority to AU5604201A priority patent/AU5604201A/en
Priority to PCT/CH2001/000313 priority patent/WO2001096071A1/en
Priority to BRPI0111386-0A priority patent/BR0111386B1/en
Priority to HU0302673A priority patent/HU227784B1/en
Priority to KR1020027016987A priority patent/KR100658471B1/en
Priority to AU2001256042A priority patent/AU2001256042B9/en
Publication of EP1163979A1 publication Critical patent/EP1163979A1/en
Priority to ZA200209014A priority patent/ZA200209014B/en
Priority to NO20026031A priority patent/NO323267B1/en
Application granted granted Critical
Publication of EP1163979B1 publication Critical patent/EP1163979B1/en
Priority to CY20071100129T priority patent/CY1105970T1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • B25B7/126—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears with fluid drive
    • 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
    • F15B11/0365—Tandem constructions
    • 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
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1438—Cylinder to end cap assemblies
    • F15B15/1442—End cap sealings
    • 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
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable 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
    • 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
    • F15B2211/70—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/5377—Riveter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator

Definitions

  • the present invention relates to a device for pneumatic actuation of a tool according to the preamble of claim 1 and a pneumatic pliers.
  • Pneumatic pliers for pressing and clamping clamping rings, bolts, cable lugs, brackets etc. are known.
  • pneumatic tongs are known in the automotive industry, where these tongs are used for clamping rings in the assembly of hoses, bellows, etc. to nozzles, propshafts, and the like.
  • the principle of increasing the force by a plurality of pistons arranged in series for generating a translational thrust has long been known, from DE 91 11 366 U.
  • the device disclosed in this document corresponds to the preamble of claim 1.
  • the conversion of the translational force, especially in pneumatic Pliers, in an arcuate force happens in the pliers head by means of a feed tool, such as a wedge.
  • the pressing force on the jaws is dependent inter alia on the thrust of the feed tool.
  • the lip seal specified in claim 3 has low static friction and low dynamic friction.
  • the device universally usable for the operation of pneumatic tools.
  • the present invention is not limited to clamping tools, but may be used for other tools operated by pneumatically operated and translationally actuatable feed members.
  • Fig. 1 shows in longitudinal section a pneumatically actuated and driven by pressure pliers 1 for the installation of pipe clamps, hose clamps, clamping rings, etc.
  • a cylinder 3 a plurality of series or in series successively arranged piston 5 are arranged.
  • the advantage of these arranged in series piston is in an increase in force by the translatable force generated is much higher than when using only a single piston.
  • One reason for this lies in the enlargement of the piston area.
  • a connection 8 is provided for connecting the pliers to a pressure medium, such as compressed air, wherein the pressure medium supply by means of a valve lever 7 for the actuation of a valve 9 can be opened or vented.
  • the individual pistons 5 have a passage 10 through the piston rods 6, for the passage of the pressure medium.
  • the front end of the piston rods 6 are radially outwardly directed outlet openings 11 are provided for the escape of compressed air and for the operation of the next plunger tool in the direction of piston 5.
  • centering holes 28 are present in the follower piston, which are sealed by means of an O-ring 25.
  • the pliers head 38 is preferably connected by means of a union nut 43 interchangeable with the cylinder 3.
  • the jaws 36 are protected laterally by means of cover plates 46 against touching (accident protection) or pollution.
  • the piston 5 in the direction of the cylinder tube wall 3, a piston seal 22 and a piston guide belt 23.
  • the piston seal 22 is preferably a so-called lip seal.
  • the use of lip seals results in low static friction and low dynamic friction.
  • the piston guide belt 23 avoids touching the piston on the cylinder tube and thus contributes to the smooth-running property of the pistons and further leads to freedom from maintenance of the pliers tool proposed according to the invention.
  • Another inventive feature is the use of a lip seal 24, by means of which the piston rod 6 is sealed relative to the cylinder cover 13. Furthermore, the piston rod 6 extends into the piston head 12 and has an additional seal 25 in the edge region of the front end, for example a so-called O-tube. This measure leads to constant translational thrust at the same pneumatic pressure.
  • FIGS. 1 and 2 are, of course, only an example which should serve to better explain the present invention.
  • the invention is by no means limited to a pneumatic pliers, shown in Figs. 1 and 2, but refers to any pneumatically actuated, drivable by pressure tools comprising a pressure cylinder tube with one or more arranged in series, pneumatically operated, non-positive piston Generation of the translational force, as described according to the invention have.
  • Particular emphasis has been placed in FIGS. 1 and 2 on the presentation of the features essential to the invention, and all known from the prior art features, structural parts and the like for devices of the type described are corresponding to the features essential to the invention in x-any kind and Way combined.
  • the inventive device will be discussed, such as electronic control, attaching monitoring sensors, the automated operation of the inventive device, the choice of material for the inventive device, be it steel, aluminum or possibly partially Use of reinforced polymer materials etc.
  • FIG. 1 and 2 may be used by replacing the pliers tool illustrated in FIG. 1 as any other press-operable tool, such as a drilling tool, punching tool, screwing tool, etc.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Basic Packing Technique (AREA)
  • Stringed Musical Instruments (AREA)
  • Manipulator (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Confectionery (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

The implement, especially pneumatic tongs (1) has a cylinder (3) with one or more pneumatically operated pistons in a row. Each piston rod (6) in the cylinder cover (13) is sealed and guided by means of a seal (24) against the previous piston (5). Components (34,35) cooperate with the piston(s) for operating the implement. The pistons are supported by at least one piston-guide-belt towards the cylinder's inner wall.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum pneumatischen Betätigen eines Werkzeugs gemäß dem Oberbegriff nach Anspruch 1 sowie eine pneumatische Zange.The present invention relates to a device for pneumatic actuation of a tool according to the preamble of claim 1 and a pneumatic pliers.

Pneumatische Zangen zum Verpressen und Festklemmen von Klemmringen, Bolzen, Kabelschuhen, Briden etc. sind bekannt. Insbesondere bekannt sind pneumatische Zangen in der Automobilindustrie, wo diese Zangen für das Festklemmen von Klemmringen bei der Montage von Schläuchen, Faltbälgen etc. an Stutzen, Gelenkwellen und dergleichen verwendet werden.Pneumatic pliers for pressing and clamping clamping rings, bolts, cable lugs, brackets etc. are known. In particular, pneumatic tongs are known in the automotive industry, where these tongs are used for clamping rings in the assembly of hoses, bellows, etc. to nozzles, propshafts, and the like.

Aus DE 37 42 782 A ist eine Druckmittelzange für Federbandschellen-bekannt, mit einem ventilgesteuerten Druckmittelanschluss und einem keilförmigen Vorschubglied.From DE 37 42 782 A a pressure medium pliers for spring band clamp-known, with a valve-controlled pressure medium connection and a wedge-shaped feed member.

In DE 89 00 250 U wird eine ähnliche Druckmittelzange beschrieben, in welcher mehrere in Serie hintereinander angeordnete Antriebskolben für die Erhöhung der Schubkraft vorgesehen sind, wobei die Kolbenstange jedes einzelnen Kolbens in einer Zylinderwandung geführt ist. Ebenfalls mehrere in Reihe angeordnete Druckkolben aufweisende Druckmittelzangen sind in DE 195 19 543 A und DE 295 09 976 U beschrieben.In DE 89 00 250 U a similar pressure medium pliers is described, in which a plurality of successively arranged in series drive piston for increasing the thrust force are provided, wherein the piston rod of each piston is guided in a cylinder wall. Also several arranged in series pressure piston pressure medium tongs are described in DE 195 19 543 A and DE 295 09 976 U.

Das Prinzip der Krafterhöhung durch mehrere in Reihe angeordnete Kolben zum Erzeugen einer translatorischen Schubkraft ist seit langem bekannt, so aus DE 91 11 366 U. Die in dieser Druckschrift offenbarte Vorrichtung entspricht dem Oberbegriff des Anspruchs 1. Die Umwandlung der translatorischen Kraft, insbesondere bei pneumatischen Zangen, in eine bogenförmige Kraft geschieht im Zangenkopf mittels eines Vorschubwerkzeugs, wie eines Keils. Die Presskraft an den Zangenbacken ist u.a. von der Schubkraft des Vorschubwerkzeugs abhängig.The principle of increasing the force by a plurality of pistons arranged in series for generating a translational thrust has long been known, from DE 91 11 366 U. The device disclosed in this document corresponds to the preamble of claim 1. The conversion of the translational force, especially in pneumatic Pliers, in an arcuate force happens in the pliers head by means of a feed tool, such as a wedge. The pressing force on the jaws is dependent inter alia on the thrust of the feed tool.

Die aus dem Stand der Technik bekannten Konzepte weisen starke Streuungen der Presskräfte auf, behalten in der Regel ihre Presskraft bei gleichem Druck nicht aufrecht und verlieren ihre Presskraft über die Lebensdauer. Ein weiterer Nachteil liegt darin, dass die bekannten Verpresszangen nicht wartungsfrei sind.The known from the prior art concepts have large variations in the pressing forces, usually keep their pressing force at the same pressure not upright and lose their pressing force over the life. Another disadvantage is that the known crimping pliers are not maintenance-free.

Es ist daher eine Aufgabe der vorliegenden Erfindung, ein pneumatisch betriebenes Werkzeug zu schaffen, bei dem die translatorische Schubkraft bei gleichem pneumatischem Druck konstant bleibt.It is therefore an object of the present invention to provide a pneumatically operated tool in which the translational thrust remains constant at the same pneumatic pressure.

Erfindungsgemäß wird diese Aufgabe mittels der in Anspruch 1 angegebenen Vorrichtung gelöst.According to the invention this object is achieved by means of the device specified in claim 1.

Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous developments of the invention will become apparent from the dependent claims.

Kolbenführungsbänder vermeiden das Berühren des Kolbens bzw. des Kolbenbodens oder -tellers am Zylinder und tragen damit zur Leichtlaufeigenschaft des Kolbens bei. Letztlich tragen diese Maßnahmen zur Wartungsfreiheit der erfindungsgemäßen Vorrichtung bei.Piston guide bands avoid touching the piston or the piston crown or plate on the cylinder and thus contribute to the smooth running characteristic of the piston. Ultimately, these measures contribute to the freedom from maintenance of the device according to the invention.

Der große Vorteil der erfindungsgemäßen Vorrichtung liegt darin, dass die translatorische Schubkraft bei gleichem pneumatischem Druck konstant bleibt. Damit ergeben sich auch konstante Presskräfte bei baugleichen Zangen und gleichem pneumatischem Druck. Schlussendlich bleiben die Presskräfte über die gesamte Lebensdauer der Vorrichtung konstant.The great advantage of the device according to the invention is that the translational thrust remains constant at the same pneumatic pressure. This results in constant pressing forces with identical pliers and the same pneumatic pressure. Finally, the press forces remain constant over the life of the device.

Die in Anspruch 3 angegebene Lippendichtung weist geringe Haftreibung und niedrige dynamische Reibung auf.The lip seal specified in claim 3 has low static friction and low dynamic friction.

Durch die auswechselbare Verbindung zwischen Werkzeugkopf und Betätigungsvorrichtung nach Anspruch 8 wird die Vorrichtung für die Betätigung von pneumatischen Werkzeugen universell verwendbar. Mit anderen Worten ist die vorliegende Erfindung nicht auf Klemmwerkzeuge beschränkt, sondern kann für andere Werkzeuge verwendet werden, die durch pneumatisch betriebene und mittels translatorischer Schubkraft betätigbare Vorschubglieder betätigt werden.Due to the interchangeable connection between the tool head and actuator according to claim 8, the device universally usable for the operation of pneumatic tools. In other words, the present invention is not limited to clamping tools, but may be used for other tools operated by pneumatically operated and translationally actuatable feed members.

Die Erfindung wird nun nachfolgend beispielsweise und unter Bezug auf die beigefügten Figuren näher erläutert. Dabei zeigen:

Fig. 1
im Längsschnitt, eine erfindungsgemäss ausgebildete pneumatische Zange, und
Fig. 2
in Vergrösserung, einen Ausschnitt der Darstellung von Fig. 1.
The invention will now be explained in more detail below, for example, with reference to the accompanying figures. Showing:
Fig. 1
in longitudinal section, an inventively designed pneumatic pliers, and
Fig. 2
in an enlargement, a section of the illustration of FIG. 1.

Fig. 1 zeigt im Längsschnitt eine pneumatisch betätigbare und mittels Druck antreibbare Zange 1 für das Verbauen von Rohrschellen, Schlauchbriden, Klemmringen etc. In einem Zylinder 3 sind mehrere in Serie bzw. in Reihe hintereinander angeordnete Kolben 5 angeordnet. Der Vorteil dieser in Reihe angeordneter Kolben liegt in einer Kraftsteigerung, indem die erzeugbare translatorische Kraft wesentlich höher ist als bei Verwendung nur eines einzigen Kolbens. Ein Grund dafür liegt in der Vergrösserung der Kolbenfläche.Fig. 1 shows in longitudinal section a pneumatically actuated and driven by pressure pliers 1 for the installation of pipe clamps, hose clamps, clamping rings, etc. In a cylinder 3 a plurality of series or in series successively arranged piston 5 are arranged. The advantage of these arranged in series piston is in an increase in force by the translatable force generated is much higher than when using only a single piston. One reason for this lies in the enlargement of the piston area.

Am hinteren Ende der handbetätigbaren pneumatischen Zange ist ein Anschluss 8 vorgesehen für das Anschliessen der Zange an ein Druckmittel, wie beispielsweise an Pressluft, wobei die Druckmittelzufuhr mittels eines Ventilhebels 7 für die Betätigung eines Ventils 9 geöffnet bzw. entlüftet werden kann. Die einzelnen Kolben 5 weisen einen Durchgang 10 durch die Kolbenstangen 6 auf, für das Hindurchtreten des Druckmittels. Im Bereich des frontseitigen Endes der Kolbenstangen 6 sind radial nach aussen gerichtet Austrittsöffnungen 11 vorgesehen, für das Austreten der Druckluft und für die Betätigung des in Richtung Zangenwerkzeug nächsten Kolbens 5. Durch die Druckluft wird der nächstfolgende Kolben 6 vorwärts getrieben, und der Durchtritt der Druckluft durch den Durchgang der nächstfolgenden Kolbenstange wiederholt sich in analoger Art und Weise.At the rear end of the hand-operated pneumatic pliers, a connection 8 is provided for connecting the pliers to a pressure medium, such as compressed air, wherein the pressure medium supply by means of a valve lever 7 for the actuation of a valve 9 can be opened or vented. The individual pistons 5 have a passage 10 through the piston rods 6, for the passage of the pressure medium. In the area the front end of the piston rods 6 are radially outwardly directed outlet openings 11 are provided for the escape of compressed air and for the operation of the next plunger tool in the direction of piston 5. By the compressed air, the next piston 6 is driven forward, and the passage of compressed air through the Passage of the next piston rod is repeated in an analogous manner.

Für ein verkantsicheres Führen der Kolbenstange sind in den Folgekolben 5,34 Zentrierbohrungen 28 vorhanden, die mittels eines O-Ringes 25 abgedichtet sind. Die Zylinderdeckel 13, welche mittels Sicherungsringen 14 fest positioniert sind, dienen der fluidischen Trennung der einzelnen Kolben und sind mit einem Dicht-Abstreifring 24 abgedichtet, so dass jeder Kolben mit seinem dazugehörigen Zylinderdeckel 13 eine fluidische Einheit darstellt.For a verkantsicheres guiding the piston rod 5.34 centering holes 28 are present in the follower piston, which are sealed by means of an O-ring 25. The cylinder cover 13, which are fixedly positioned by means of retaining rings 14, serve the fluidic separation of the individual pistons and are sealed with a sealing-scraper ring 24, so that each piston with its associated cylinder cover 13 is a fluidic unit.

In Zangenwerkzeugrichtung am den vordersten Kolben 5 folgt der sogenannte Keilkolben 34, an dessen Frontseite ein keilförmiges Vorschubglied 35 angeordnet ist, zum Betätigen des Zangenkopfes 38. Durch den mittels des Druckmittels, wie beispielsweise der Pressluft, vorwärts getriebenen Keil 35 werden die beiden beispielsweise im Bolzen 39 gelagerten Zangenbacken 36 im hinteren Bereich auseinandergetrieben, indem sich die Keilfläche zwischen zwei Rollen 40 schiebt. Gleichzeitig werden die beiden Zangenbacken 36 frontseitig in Schliessrichtung zusammengetrieben, beispielsweise für das Festklemmen einer Klemmbride bzw. für das Verpressen von Ohrklemmen oder dergleichen durch Betätigen von Zangen 42.In the direction of the pliers tool on the foremost piston 5 follows the so-called wedge piston 34, on the front side of a wedge-shaped feed member 35 is arranged to actuate the pliers head 38. By means of the pressure medium, such as the compressed air, driven forward wedge 35, the two, for example, in the bolt 39 stored jaws 36 apart in the rear area by the wedge surface between two rollers 40 pushes. At the same time, the two jaws 36 are pushed together in the front in the closing direction, for example, for clamping a clamp or for the pressing of ear clamps or the like by pressing pliers 42nd

Der Zangenkopf 38 ist vorzugsweise mittels einer Überwurfmutter 43 auswechselbar mit dem Zylinder 3 verbunden. Zusätzlich sind die Zangenbacken 36 seitlich mittels Abdeckblechen 46 gegen Berühren (Unfallschutz) bzw. Verschmutzung geschützt.The pliers head 38 is preferably connected by means of a union nut 43 interchangeable with the cylinder 3. In addition, the jaws 36 are protected laterally by means of cover plates 46 against touching (accident protection) or pollution.

Anhand von einem Ausschnitt aus Fig. 1 soll nun im Längsschnitt von Fig. 2 auf die erfindungswesentlichen Merkmale eingegangen werden. So weist der Kolben 5 in Richtung Zylinderrohrwandung 3 eine Kolbendichtung 22 sowie ein Kolbenführungsband 23 auf. Bei der Kolbendichtung 22 handelt es sich vorzugsweise um eine sogenannte Lippendichtung. Insbesondere die Verwendung von Lippendichtungen ergibt geringe Haftreibung sowie niedere dynamische Reibung. Das Kolbenführungsband 23 vermeidet das Berühren des Kolbens am Zylinderrohr und trägt damit zur Leichtlaufeigenschaft der Kolben bei und führt weiter zur Wartungsfreiheit des erfindungsgemäss vorgeschlagenen Zangenwerkzeuges.On the basis of a section of Fig. 1 will now be discussed in longitudinal section of Fig. 2 on the features essential to the invention. Thus, the piston 5 in the direction of the cylinder tube wall 3, a piston seal 22 and a piston guide belt 23. The piston seal 22 is preferably a so-called lip seal. In particular, the use of lip seals results in low static friction and low dynamic friction. The piston guide belt 23 avoids touching the piston on the cylinder tube and thus contributes to the smooth-running property of the pistons and further leads to freedom from maintenance of the pliers tool proposed according to the invention.

Ein weiteres erfinderisches Merkmal liegt in der Verwendung einer Lippendichtung 24, mittels welcher die Kolbenstange 6 gegenüber dem Zylinderdeckel 13 abgedichtet ist. Weiter erstreckt sich die Kolbenstange 6 bis in den Kolbenboden 12 hinein und weist im Randbereich des Frontendes eine zusätzliche Dichtung 25 auf, wie beispielsweise einen sogenannten O-Rohr. Diese Massnahme führt zur konstanten translatorischen Schubkraft bei gleichem pneumatischen Druck.Another inventive feature is the use of a lip seal 24, by means of which the piston rod 6 is sealed relative to the cylinder cover 13. Furthermore, the piston rod 6 extends into the piston head 12 and has an additional seal 25 in the edge region of the front end, for example a so-called O-tube. This measure leads to constant translational thrust at the same pneumatic pressure.

Im übrigen sind in Fig. 2 analoge Teile zu Fig. 1 mit denselben Bezugszeichen versehen, womit auf eine Wiederholung der Funktionsweise der erfindungsgemässen Druckmittelvorrichtung verzichtet werden kann.Incidentally, similar parts to Fig. 1 are provided with the same reference numerals in Fig. 2, whereby a repetition of the operation of the inventive pressure medium device can be dispensed with.

Bei der in den Fig. 1 und 2 dargestellten pneumatischen Zange handelt es sich selbstverständlich nur um ein Beispiel, welches zur besseren Erläuterung der vorliegenden Erfindung dienen soll. Die Erfindung ist keinesfalls auf eine pneumatische Zange, dargestellt in den Fig. 1 und 2, beschränkt, sondern bezieht sich auf irgendwelche pneumatisch betätigbaren, mittels Druck antreibbaren Werkzeuge, welche ein Druckzylinderrohr mit einem oder mehreren in Reihe angeordneten, pneumatisch betreibbaren, kraftschlüssigen Kolben zur Erzeugung der translatorischen Kraft, wie erfindungsgemäss beschrieben, aufweisen. In den Fig. 1 und 2 wurde insbesondere Wert gelegt auf die Darlegung der erfindungswesentlichen Merkmale, und alle an sich aus dem Stand der Technik bekannten Merkmale, Konstruktionsteile und dergleichen für Vorrichtungen der beschriebenen Art sind entsprechend mit den erfindungswesentlichen Merkmalen in x-beliebiger Art und Weise kombinierbar. Insbesondere soll an dieser Stelle auch nicht auf die weitere Ausgestaltung der erfindungsgemässen Vorrichtung eingegangen werden, wie beispielsweise elektronische Steuerung, das Anbringen von Überwachungssensoren, das automatisierte Betreiben der erfindungsgemässen Vorrichtung, die Materialwahl für die erfindungsgemässe Vorrichtung, sei dies Stahl, Aluminium oder gegebenenfalls partiell die Verwendung von verstärkten Polymerwerkstoffen etc.The pneumatic pincers shown in FIGS. 1 and 2 are, of course, only an example which should serve to better explain the present invention. The invention is by no means limited to a pneumatic pliers, shown in Figs. 1 and 2, but refers to any pneumatically actuated, drivable by pressure tools comprising a pressure cylinder tube with one or more arranged in series, pneumatically operated, non-positive piston Generation of the translational force, as described according to the invention have. Particular emphasis has been placed in FIGS. 1 and 2 on the presentation of the features essential to the invention, and all known from the prior art features, structural parts and the like for devices of the type described are corresponding to the features essential to the invention in x-any kind and Way combined. In particular, at this point not to the further embodiment of the inventive device will be discussed, such as electronic control, attaching monitoring sensors, the automated operation of the inventive device, the choice of material for the inventive device, be it steel, aluminum or possibly partially Use of reinforced polymer materials etc.

Die in den Fig. 1 und 2 dargestellte Vorrichtung kann durch Auswechseln des in Fig. 1 dargestellten Zangenwerkzeuges als ein x-beliebiges anderes mittels Druck betreibbares Werkzeug verwendet werden, wie beispielsweise als Bohrwerkzeug, Stanzwerkzeug, Schraubwerkzeug etc.1 and 2 may be used by replacing the pliers tool illustrated in FIG. 1 as any other press-operable tool, such as a drilling tool, punching tool, screwing tool, etc.

Legende zu den Figuren:Legend to the figures:

11
Pneumatische ZangePneumatic pliers
33
Zylindercylinder
55
Kolbenpiston
66
Kolbenstange des Kolbens 5Piston rod of the piston 5
77
Ventilhebelvalve lever
88th
Öffnung für DruckmittelOpening for pressure medium
99
VentilValve
1010
Durchgangsbohrung im Kolben 5Through hole in the piston 5
1111
Austrittsöffnungenoutlet openings
1212
Kolbenbodenpiston crown
1313
Zylinderdeckelcylinder cover
1414
Sicherungsringcirclip
2222
Kolbendichtung (zwischen Kolben 5 und Zylinder 3)Piston seal (between piston 5 and cylinder 3)
2323
Kolbenführungsband (zur Führung)Piston guide belt (for guidance)
2424
Dicht-Abstreifring (Dichtung zwischen Kolbenstange des Kolbens 5 und Zylinderdeckel 13Sealing wiper ring (seal between piston rod of piston 5 and cylinder cover 13
2525
Dichtung zwischen Kolbenstange des vorherigen Kolbens zum Folgekolben, z.B. O-RingSeal between piston rod of the previous piston to follower piston, e.g. O-ring
2828
Zentrierbohrungcentering
3434
Keilkolben zur Aufnahme des Keils 35Wedge piston for receiving the wedge 35
3535
Keilwedge
3636
Zangenbackejaw
3737
Zangenhalterchuck holder
3838
Zangenkopfpliers head
3939
Bolzenbolt
4040
Rollerole
4242
ZangenPliers
4343
ÜberwurfmutterNut
4646
AbdeckblechCover plate

Claims (9)

  1. A device for pneumatically operating a tool (8), specifically pneumatic pliers, comprising a cylinder (3) having pneumatically actuated pistons (5, 34) arranged in series for generating a translatory force, each piston bearing against the cylinder wall via a piston guide band (23) and having a piston rod (6) guided and sealed with respect to the following piston (5, 34) in an appertaining cylinder cover (13), and a structural part (35) functionally connected to the last piston (34) for operating the tool,
    characterised in that a seal (25) facing the following piston (5, 34) is disposed in the peripheral portion of the front face of each piston rod (6).
  2. The device of claim 1, wherein each piston rod (6) is formed so as to extend into the following piston (5, 34).
  3. The device of claim 1 or 2, wherein the seal of the piston rod (6) with respect to the appertaining cylinder cover (13) is a lip seal (24).
  4. The device of claim 1 or 2, wherein the seal of the piston rod (6) with respect to the appertaining cylinder cover (13) is a sealing wiper ring (24).
  5. The device of claim 3, wherein the seal (25) between the front face of the piston rod (6) and the following piston (5, 34) is an O-ring.
  6. The device of any preceding claim, wherein the structural part (35) for operating the tool includes a wedge for transmitting the translatory force to a pair of pliers or jaw type members riding on the wedge faces.
  7. The device of claim 6, wherein the structural part (35) for operating the tool is screwed into said last piston (5, 34) and is guided within a pliers holder (37).
  8. The device of any preceding claim, wherein the tool head (38) is replaceably connected to the cylinder (3).
  9. Pneumatic pliers for fitting and pressing clamp rings, hose clamps, tube clamps, hose clips, ear clamps, comprising the operating device of any one of claims 1 to 8.
EP00112559A 2000-06-14 2000-06-14 Pneumatically operated precision pliers Expired - Lifetime EP1163979B1 (en)

Priority Applications (22)

Application Number Priority Date Filing Date Title
EP00112559A EP1163979B1 (en) 2000-06-14 2000-06-14 Pneumatically operated precision pliers
PT00112559T PT1163979E (en) 2000-06-14 2000-06-14 Pneumatically operated precision pliers
DK00112559T DK1163979T3 (en) 2000-06-14 2000-06-14 Pneumatic precision rod
AT00112559T ATE345196T1 (en) 2000-06-14 2000-06-14 PNEUMATIC PRECISION PLIERS
DE50013754T DE50013754D1 (en) 2000-06-14 2000-06-14 Pneumatic precision pliers
ES00112559T ES2275461T3 (en) 2000-06-14 2000-06-14 TIRES OF PRECISION TIRES.
KR1020027016987A KR100658471B1 (en) 2000-06-14 2001-05-22 Pneumatic Manipulators of Tools
US10/311,365 US7107814B2 (en) 2000-06-14 2001-05-22 Pneumatic precision pliers
HK03109392.2A HK1057022B (en) 2000-06-14 2001-05-22 A device for pneumatically operating a tool and pneumatic pliers comprising said device
CNB018111629A CN1264650C (en) 2000-06-14 2001-05-22 Device for pneumatically operated tools and pneumatic pliers having such a device
MXPA02011998A MXPA02011998A (en) 2000-06-14 2001-05-22 Pneumatic precision pliers.
CA002412234A CA2412234C (en) 2000-06-14 2001-05-22 Pneumatic precision pliers
JP2002510237A JP4918208B2 (en) 2000-06-14 2001-05-22 Precision plier by pneumatic pressure
PCT/CH2001/000313 WO2001096071A1 (en) 2000-06-14 2001-05-22 Pneumatic precision pliers
BRPI0111386-0A BR0111386B1 (en) 2000-06-14 2001-05-22 device for the pneumatic activation of a pressurized actuable tool as well as pneumatic pincers having such a device.
HU0302673A HU227784B1 (en) 2000-06-14 2001-05-22 Pneumatically operated precision pliers
CZ20024033A CZ298243B6 (en) 2000-06-14 2001-05-22 Device for pneumatic control of a tool and pneumatic tongs
AU2001256042A AU2001256042B9 (en) 2000-06-14 2001-05-22 Pneumatic precision pliers
AU5604201A AU5604201A (en) 2000-06-14 2001-05-22 Pneumatic precision pliers
ZA200209014A ZA200209014B (en) 2000-06-14 2002-11-06 Pneumatic precision pliers.
NO20026031A NO323267B1 (en) 2000-06-14 2002-12-16 Pneumatic precision rod
CY20071100129T CY1105970T1 (en) 2000-06-14 2007-01-31 PRECISION PLIERS OPERATED BY COMPRESSED AIR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00112559A EP1163979B1 (en) 2000-06-14 2000-06-14 Pneumatically operated precision pliers

Publications (2)

Publication Number Publication Date
EP1163979A1 EP1163979A1 (en) 2001-12-19
EP1163979B1 true EP1163979B1 (en) 2006-11-15

Family

ID=8168968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00112559A Expired - Lifetime EP1163979B1 (en) 2000-06-14 2000-06-14 Pneumatically operated precision pliers

Country Status (20)

Country Link
US (1) US7107814B2 (en)
EP (1) EP1163979B1 (en)
JP (1) JP4918208B2 (en)
KR (1) KR100658471B1 (en)
CN (1) CN1264650C (en)
AT (1) ATE345196T1 (en)
AU (2) AU5604201A (en)
BR (1) BR0111386B1 (en)
CA (1) CA2412234C (en)
CY (1) CY1105970T1 (en)
CZ (1) CZ298243B6 (en)
DE (1) DE50013754D1 (en)
DK (1) DK1163979T3 (en)
ES (1) ES2275461T3 (en)
HU (1) HU227784B1 (en)
MX (1) MXPA02011998A (en)
NO (1) NO323267B1 (en)
PT (1) PT1163979E (en)
WO (1) WO2001096071A1 (en)
ZA (1) ZA200209014B (en)

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Also Published As

Publication number Publication date
CZ20024033A3 (en) 2004-07-14
WO2001096071A8 (en) 2003-01-03
JP4918208B2 (en) 2012-04-18
US20040010899A1 (en) 2004-01-22
CA2412234A1 (en) 2002-12-11
MXPA02011998A (en) 2004-02-26
DK1163979T3 (en) 2007-03-05
NO20026031L (en) 2002-12-16
ATE345196T1 (en) 2006-12-15
HU227784B1 (en) 2012-02-28
CA2412234C (en) 2009-11-10
AU2001256042B2 (en) 2005-08-18
PT1163979E (en) 2007-01-31
CZ298243B6 (en) 2007-08-01
JP2004503390A (en) 2004-02-05
ES2275461T3 (en) 2007-06-16
ZA200209014B (en) 2003-08-22
CY1105970T1 (en) 2011-04-06
HK1057022A1 (en) 2004-03-12
CN1264650C (en) 2006-07-19
NO323267B1 (en) 2007-02-19
CN1436114A (en) 2003-08-13
NO20026031D0 (en) 2002-12-16
HUP0302673A2 (en) 2003-11-28
AU2001256042B9 (en) 2006-01-12
BR0111386A (en) 2003-05-20
BR0111386B1 (en) 2010-06-29
AU5604201A (en) 2001-12-24
EP1163979A1 (en) 2001-12-19
KR100658471B1 (en) 2006-12-18
US7107814B2 (en) 2006-09-19
WO2001096071A1 (en) 2001-12-20
DE50013754D1 (en) 2006-12-28
KR20030014714A (en) 2003-02-19

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