EP0302128B1 - Rivet setting tool for setting blind rivets - Google Patents

Rivet setting tool for setting blind rivets Download PDF

Info

Publication number
EP0302128B1
EP0302128B1 EP87111206A EP87111206A EP0302128B1 EP 0302128 B1 EP0302128 B1 EP 0302128B1 EP 87111206 A EP87111206 A EP 87111206A EP 87111206 A EP87111206 A EP 87111206A EP 0302128 B1 EP0302128 B1 EP 0302128B1
Authority
EP
European Patent Office
Prior art keywords
valve
compressed air
piston
bore
tool according
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
EP87111206A
Other languages
German (de)
French (fr)
Other versions
EP0302128A1 (en
Inventor
Manfred Schwab
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.)
Maschinenbau Subotsch and Schwab GmbH
Original Assignee
Maschinenbau Subotsch and Schwab 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 Maschinenbau Subotsch and Schwab GmbH filed Critical Maschinenbau Subotsch and Schwab GmbH
Priority to DE8787111206T priority Critical patent/DE3775768D1/en
Priority to EP87111206A priority patent/EP0302128B1/en
Priority to US07/227,503 priority patent/US4866972A/en
Priority to JP63193552A priority patent/JP2523163B2/en
Publication of EP0302128A1 publication Critical patent/EP0302128A1/en
Application granted granted Critical
Publication of EP0302128B1 publication Critical patent/EP0302128B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
    • B21J15/32—Devices for inserting or holding rivets in position with or without feeding arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/105—Portable riveters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
    • B21J15/32—Devices for inserting or holding rivets in position with or without feeding arrangements
    • B21J15/326—Broken-off mandrel collection
    • 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
    • Y10T29/53717—Annular work
    • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
    • Y10T29/5373—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
    • Y10T29/53739—Pneumatic- or fluid-actuated tool
    • 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

Definitions

  • the invention relates to a rivet setting tool for setting blind rivets with a delivery channel extending backwards from the mouthpiece through the device head for removing the torn rivet pins, with an axial feed device which can be actuated for the upsetting process and which comprises a cylinder-piston cylinder consisting of a pneumatic piston and a hydraulic piston.
  • Arrangement comprises, with a compressed air supply device for actuating the feed device and for removing the torn pins, and with an actuator movable in two operating positions, the first operating position opening the feed channel valve, which introduces compressed air for sucking the rivet into the feed channel, and the second operating position Pneumatic piston valve for actuating the feed device opens.
  • the rivet With such rivet setting tools, several operations are required. First, the rivet must be sucked in by the device, then the feed device must be actuated to carry out the actual riveting process, and then the torn pin must be conveyed out of the device into a pin collecting container. For this purpose, different actuators often have to be operated in known devices.
  • a rivet setting tool for setting blind rivets which has an operating switch which can be moved in two operating positions.
  • the control switch serves to control the compressed air within the device in such a way that in a first operating position the compressed air flowing out of a compressed air chamber arrives in a delivery channel, whereby a feed device is moved in the direction of the head of the rivet setting tool and at the same time a suction effect occurs in the delivery channel. whereby blind rivets can be sucked in by the device.
  • the invention is based on the object of making available a rivet setting tool that manages for all operations with a single actuator and in which unnecessary compressed air consumption and the noise caused thereby are avoided.
  • the invention consists in that in a rivet setting tool of the type mentioned in the rest position of the actuating member, a compressed air supply channel between a compressed air chamber and a delivery channel is interrupted by means of a delivery channel valve
  • the actuating member acts on a valve piston, to which a valve tappet is attached, which moves a valve ball out of its valve ball seat.
  • valve tappet advantageously has a smaller diameter than the valve tappet bore in which it is located, a compressed air passage leading from the valve tappet bore to the delivery channel.
  • a compression spring urges the valve ball into its ball valve seat and that the compression spring is mounted in a central valve slide bore of a valve slide.
  • valve piston comes into contact with the valve slide in the first operating position, while in the second operating position the valve piston moves the valve slide downward, thereby opening a pneumatic piston valve through which compressed air enters the pneumatic cylinder chamber on the pneumatic piston.
  • valve spool is seated in a compressed air supply bore, the inner diameter of which is larger than the outer diameter of the valve spool and that an O-ring seal in the second operating position of the actuator releases a pneumatic cylinder chamber feed bore.
  • the central valve slide bore in the region of the valve chamber is expediently connected to it by a transverse bore.
  • the actuator consists of a pusher that is movable against a compression spring within a guide is.
  • the handle is equipped with a roller that comes into contact with the top of the valve piston.
  • a blind rivet (not shown) is inserted into the mouthpiece 1 of the tool.
  • a front sleeve 2 surrounds the clamping jaws 3 and is sealed with an O-ring seal 4 against a clamping sleeve 5.
  • Inside is a guide sleeve 6 with the compression spring 7.
  • the rear part 8 of the front sleeve 2 is screwed into the housing 17.
  • a hydraulic piston 9 which is sealed against the housing 17 via O-ring seals 10 and 11.
  • a strong compression spring 12 urges the hydraulic piston 9 into its front position, shown in the figure.
  • the housing is closed at the rear by an end piece 13.
  • a conveying channel 40 leads from the mouthpiece 1 to the rear and opens into a pen collecting container 16. This is sealed to the front by O-ring seals 14 and 15 and has two vent holes 53.
  • the lower part of the housing 17 is closed by a pneumatic piston housing 20, in which a pneumatic piston 19 is seated and is sealed off from the housing parts with the aid of O-ring seals 18 and 21.
  • a pneumatic piston extension 22 projects into a housing chamber 23 which tapers in the housing 17 and is connected to the hydraulic piston 9.
  • An actuator in the form of a pusher 37 sits in a guide 38 and is movable against a compression spring 39 in the housing 37 in two operating positions.
  • the pusher 37 is equipped with a pusher roller 52 which comes to rest on the top of a valve piston 36.
  • the piston 36 has one Valve tappet 41, which extends to a valve ball 34, which belongs to a delivery channel valve 42.
  • the valve ball 34 is seated in a valve ball seat 44, which is formed in a valve slide 32 and closes off the valve tappet bore 45, which has a larger inner diameter than the outer diameter of the valve tappet 41.
  • a compressed air passage 48 extends from the valve tappet bore 45 and passes through a supply bore 53 the delivery channel 40 is connected.
  • the valve slide 32 is sealed by O-rings 35 with respect to the bore in the housing 17.
  • the valve spool 32 has a central valve spool bore 50, in which a compression spring 33 is arranged, which urges the valve ball 34 into its valve seat 44.
  • a pneumatic piston valve 43 At the lower end of the valve slide 32, which is extended by a valve rod 29, there is a pneumatic piston valve 43.
  • a compressed air supply is connected to a compressed air chamber 46 into which the lower end of the valve rod 29 projects.
  • the compressed air chamber 46 is connected to the pneumatic cylinder chamber 47 via a pneumatic cylinder chamber feed bore 49.
  • O-ring seals on the valve rod 29 are arranged so that in the second operating position they establish a connection between the compressed air supply into the compressed air chamber 46 through the pneumatic cylinder chamber supply bore 49 with the pneumatic cylinder chamber 47.
  • a compression spring 28 is arranged in the compressed air chamber 46 and urges the valve rod 29 and thus the valve slide 32 upwards.
  • the compressed air chamber 46 and the valve rod are sealed off from the pneumatic piston 19 via a retaining ring 25 and O
  • valve ball 34 in the valve seat 44 regulates the passage of compressed air through the compressed air supply bore 48, and no air flows out of the device.
  • the device is operated by pushing the button 37 into the first operating position is pressed, the roller 52 presses the valve piston 36 downward, and the valve tappet 41 moves the valve ball 34 out of the valve seat 44.
  • compressed air passes from the valve slide bore 50 into the valve tappet bore 45 and from there via the compressed air supply bore 48 into the delivery channel 40, so that a blind rivet, not shown, is sucked into the mouthpiece 1.
  • the valve piston 36 on the roller 52 moves further downward.
  • the valve slide 32 comes into contact with the valve slide 32 and thus moves it and thus also the valve rod 29 downward.
  • a connection is established between the compressed air supply or the pressure chamber 46 filled with compressed air via the pneumatic cylinder feed bore 49 to the pneumatic cylinder chamber 47.
  • the pneumatic piston is moved upwards in the device, thereby causing the hydraulic piston to move backwards against the compression spring 12 in the device, as a result of which the riveting process is carried out.
  • the pusher 37 is relieved and returns to the first operating position.
  • valve ball 34 still releases the valve seat 44, so that compressed air is fed further into the delivery channel 40 and the torn-off pin can be conveyed into the pin collecting container 16. If the pusher 37 is completely relieved, the valve ball 34 also returns to the valve seat 44, and the compressed air supply is thus completed.
  • the invention has thus made available a blind rivet setting tool in which constant air consumption is avoided and the compressed air supply in the device is closed during breaks in operation, without a separate closing valve having to be actuated. So the device comes with a single push button. This considerably simplifies operation, and compressed air consumption and the associated exit noises are avoided during short pauses in operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Forging (AREA)

Description

Die Erfindung betrifft ein Nietsetzwerkzeug zum Setzen von Blindnieten mit einem von dem Mundstück durch den Gerätekopf nach hinten sich erstreckenden Förderkanal zum Abführen der abgerissenen Nietstifte, mit einer für den Stauchvorgang betätigbaren axialen Vorschubeinrichtung, die eine aus einem Pneumatikkolben und einem Hydraulikkolben bestehenden Zylinder-Kolben-Anordnung umfaßt, mit einer Druckluftzuführungseinrichtung zum Betätigen der Vorschubeinrichtung und zum Ausfördern der abgerissenen Stifte, und mit einem in zwei Betriebsstellungen bewegbaren Betätigungsglied, wobei die erste Betriebsstellung das Förderkanalventil öffnet, das Druckluft zum Ansaugen des Niets in den Förderkanal einführt, und die zweite Betriebsstellung ein Pneumatikkolbenventil zur Betätigung der Vorschubeinrichtung öffnet.The invention relates to a rivet setting tool for setting blind rivets with a delivery channel extending backwards from the mouthpiece through the device head for removing the torn rivet pins, with an axial feed device which can be actuated for the upsetting process and which comprises a cylinder-piston cylinder consisting of a pneumatic piston and a hydraulic piston. Arrangement comprises, with a compressed air supply device for actuating the feed device and for removing the torn pins, and with an actuator movable in two operating positions, the first operating position opening the feed channel valve, which introduces compressed air for sucking the rivet into the feed channel, and the second operating position Pneumatic piston valve for actuating the feed device opens.

Bei derartigen Nietsetzwerkzeugen sind mehrere Bedienungsvorgänge erforderlich. Zuerst muß der Niet von dem Gerät angesaugt werden, dann muß die Vorschubeinrichtung zur Durchführung des eigentlichen Nietvorgangs betätigt werden und dann muß der abgerissene Stift aus dem Gerät in einen Stiftauffangbehälter gefördert werden. Dazu müssen bei bekannten Geräten oftmals unterschiedliche Betätigungsglieder bedient werden.With such rivet setting tools, several operations are required. First, the rivet must be sucked in by the device, then the feed device must be actuated to carry out the actual riveting process, and then the torn pin must be conveyed out of the device into a pin collecting container. For this purpose, different actuators often have to be operated in known devices.

Aus der DE-A-35 32 932 ist ein Nietsetzwerkzeug zum Setzen von Blindnieten bekannt, das einen Bedienungsschalter aufweist, der in zwei Betriebsstellungen bewegbar ist. Der Bedienungsschalter dient dazu, die Druckluft innerhalb des Gerätes so zu steuern, daß in einer ersten Betriebsstellung die von einer Druckluftkammer ausströmende Druckluft in einen Förderkanal gelangt, wodurch eine Vorschubeinrichtung in Richtung des Kopfes des Nietsetzwerkzeugs bewegt wird und gleichzeitig in dem Förderkanal eine Sogwirkung entsteht, wodurch Blindnieten von dem Gerät angesaugt werden können. In einer zweiten Betriebsstellung wird der Druckluftkanal zwischen Förderkanal und Druckluftkammer unterbrochen und die Druckluft nunmehr in eine pneumatische Druckkammer umgeleitet, wodurch ein Pneumatikkolben nach oben gedrückt wird und dabei gleichzeitig die Vorschubeinrichtung nach hinten in die Rückwand des Nietsetzwerkzeugs schiebt.From DE-A-35 32 932 a rivet setting tool for setting blind rivets is known which has an operating switch which can be moved in two operating positions. The control switch serves to control the compressed air within the device in such a way that in a first operating position the compressed air flowing out of a compressed air chamber arrives in a delivery channel, whereby a feed device is moved in the direction of the head of the rivet setting tool and at the same time a suction effect occurs in the delivery channel. whereby blind rivets can be sucked in by the device. In a second operating position, the compressed air channel between the delivery channel and the compressed air chamber is interrupted and the compressed air is now diverted into a pneumatic pressure chamber, whereby a pneumatic piston is pushed upwards and at the same time pushes the feed device backwards into the rear wall of the rivet setting tool.

Es ist ein Nachteil, daß ein ständiger Druckluftstrom vorgesehen ist, der den Betrieb des Geräts verhältnismäßig kostspielig macht und außerdem ständig Druckluftgeräusche verursacht. Wird das Gerät außer Betrieb genommen, muß durch ein zusätzliches Druckluftventil der Druckluftstrom abgestellt werden.It is a disadvantage that a constant flow of compressed air is provided, which makes the operation of the device relatively expensive and, moreover, constantly causes compressed air noise. If the device is taken out of operation, the compressed air flow must be shut off using an additional compressed air valve.

Der Erfindung liegt demgegenüber die Aufgabe zugrunde, ein Nietsetzwerkzeug verfügbar zu machen, das für alle Bedienungsvorgänge mit einem einzigen Betätigungsglied auskommt und bei dem ein unnötiger Druckluftverbrauch und die dadurch verursachten Geräusche vermieden sind.The invention is based on the object of making available a rivet setting tool that manages for all operations with a single actuator and in which unnecessary compressed air consumption and the noise caused thereby are avoided.

Die Erfindung besteht darin, daß bei einem Nietsetzwerkzeug der eingangs genannten Art in der Ruhestellung des Betätigungsgliedes ein Druckluftzuführungskanal zwischen einer Druckluftkammer und einem Förderkanal mittels eines Förderkanalventils unterbrochen ist
   Gemäß einer zweckmäßigen Ausgestaltung ist vorgesehen, daß das Betätigungsglied auf einen Ventilkolben wirkt, an dem ein Ventilstößel befestigt ist, der eine Ventilkugel aus ihrem Ventilkugelsitz bewegt.The invention consists in that in a rivet setting tool of the type mentioned in the rest position of the actuating member, a compressed air supply channel between a compressed air chamber and a delivery channel is interrupted by means of a delivery channel valve
According to an expedient embodiment, it is provided that the actuating member acts on a valve piston, to which a valve tappet is attached, which moves a valve ball out of its valve ball seat.

Dabei weist mit Vorteil der Ventilstößel einen geringeren Durchmesser auf als die Ventilstößelbohrung, in der er sich befindet, wobei von der Ventilstößelbohrung ein Druckluftdurchgang zum Förderkanal führt.The valve tappet advantageously has a smaller diameter than the valve tappet bore in which it is located, a compressed air passage leading from the valve tappet bore to the delivery channel.

Gemäß einer zweckmäßigen Ausführungsform ist vorgesehen, daß eine Druckfeder die Ventilkugel in ihren Kugelventilsitz drängt und daß die Druckfeder in einer mittigen Ventilschieberbohrung eines Ventilschiebers angebracht ist.According to an expedient embodiment, it is provided that a compression spring urges the valve ball into its ball valve seat and that the compression spring is mounted in a central valve slide bore of a valve slide.

Gemäß einer vorteilhaften Ausführungsform kommt der Ventilkolben in der ersten Betriebsstellung auf dem Ventilschieber in Anlage, während in der zweiten Betriebsstellung der Ventilkolben den Ventilschieber nach unten bewegt und dadurch ein Pneumatikkolbenventil öffnet, durch das Druckluft in die Pneumatikzylinderkammer am Pneumatikkolben gelangt.According to an advantageous embodiment, the valve piston comes into contact with the valve slide in the first operating position, while in the second operating position the valve piston moves the valve slide downward, thereby opening a pneumatic piston valve through which compressed air enters the pneumatic cylinder chamber on the pneumatic piston.

Eine vorteilhafte Ausführungsform besteht darin, daß der Ventilschieber in einer Druckluftzuführungsbohrung sitzt, deren Innendurchmesser größer als der Außendurchmesser des Ventilschiebers ist und daß eine O-Ringdichtung in der zweiten Betriebsstellung des Betätigungsgliedes eine Pneumatikzylinderkammerzuführbohrung freigibt.An advantageous embodiment is that the valve spool is seated in a compressed air supply bore, the inner diameter of which is larger than the outer diameter of the valve spool and that an O-ring seal in the second operating position of the actuator releases a pneumatic cylinder chamber feed bore.

Desweiteren ist in zweckmäßiger Weise die mittige Ventilschieberbohrung im Bereich der Ventilkammer durch eine Querbohrung mit dieser verbunden.Furthermore, the central valve slide bore in the region of the valve chamber is expediently connected to it by a transverse bore.

In ihrer Weiterbildung schlägt die Erfindung vor, daß das Betätigungsglied aus einem Drücker besteht, der innerhalb einer Führung gegen eine Druckfeder bewegbar ist. Für eine sinnvolle Kraftübertragung ist der Drücker mit einer Rolle versehen, die auf der Oberseite des Ventilkolbens mit diesem in Berührung kommt.In its development, the invention proposes that the actuator consists of a pusher that is movable against a compression spring within a guide is. For a sensible power transmission, the handle is equipped with a roller that comes into contact with the top of the valve piston.

Die Erfindung soll nachfolgend unter Bezugnahme auf die beigefügte Zeichnung anhand eines Ausführungsbeispiels näher erläutert werden.The invention will be explained in more detail below with reference to the accompanying drawing using an exemplary embodiment.

In der Zeichnung ist ein Nietsetzwerkzeug im Längsschnitt dargestellt.In the drawing, a rivet setting tool is shown in longitudinal section.

Bei dem Werkzeug wird in das Mundstück 1 ein nicht dargestellter Blindniet eingesetzt. Eine vordere Hülse 2 umgibt die Spannbacken 3 und ist mit einer O-Ringdichtung 4 gegen eine Spannhülse 5 abgedichtet. Innen sitzt eine Führungshülse 6 mit der Druckfeder 7. Der hintere Teil 8 der vorderen Hülse 2 ist in das Gehäuse 17 eingeschraubt. In diesem sitzt ein Hydraulikkolben 9, der über O-Ringdichtungen 10 und 11 gegenüber dem Gehäuse 17 abgedichtet ist. Eine starke Druckfeder 12 drängt den Hydraulikkolben 9 in seine vordere, in der Figur dargestellte Stellung. Das Gehäuse ist nach hinten durch ein Endstück 13 verschlossen. Von dem Mundstück 1 führt nach hinten ein Förderkanal 40, der in einen Stiftauffangbehälter 16 mündet. Dieser ist durch O-Ringdichtungen 14 und 15 nach vorn abgedichtet und besitzt zwei Entlüftungsbohrungen 53.A blind rivet (not shown) is inserted into the mouthpiece 1 of the tool. A front sleeve 2 surrounds the clamping jaws 3 and is sealed with an O-ring seal 4 against a clamping sleeve 5. Inside is a guide sleeve 6 with the compression spring 7. The rear part 8 of the front sleeve 2 is screwed into the housing 17. In this sits a hydraulic piston 9, which is sealed against the housing 17 via O-ring seals 10 and 11. A strong compression spring 12 urges the hydraulic piston 9 into its front position, shown in the figure. The housing is closed at the rear by an end piece 13. A conveying channel 40 leads from the mouthpiece 1 to the rear and opens into a pen collecting container 16. This is sealed to the front by O-ring seals 14 and 15 and has two vent holes 53.

Das untere Teil des Gehäuses 17 wird von einem Pneumatikkolbengehäuse 20 abgeschlossen, in dem ein Pneumatikkolben 19 sitz und mit Hilfe von O-Ringdichtungen 18 und 21 gegenüber den Gehäuseteilen abgedichtet ist. Ein Pneumatikkolbenfortsatz 22 ragt in eine im Gehäuse 17 sich verjüngende Gehäusekammer 23 , die mit dem Hydraulikkolben 9 in Verbindung steht.The lower part of the housing 17 is closed by a pneumatic piston housing 20, in which a pneumatic piston 19 is seated and is sealed off from the housing parts with the aid of O-ring seals 18 and 21. A pneumatic piston extension 22 projects into a housing chamber 23 which tapers in the housing 17 and is connected to the hydraulic piston 9.

Ein Betätigungsglied in Form eines Drückers 37 sitzt in einer Führung 38 und ist gegen eine Druckfeder 39 in das Gehäuse 37 in zwei Betriebsstellungen bewegbar. Zu diesem Zweck ist der Drücker 37 mit einer Drückerrolle 52 ausgestattet, die auf der Oberseite eines Ventilkolbens 36 zur Anlage kommt. Der Kolben 36 besitzt einen Ventilstößel 41, der bis zu einer Ventilkugel 34 reicht, die zu einem Förderkanalventil 42 gehört. Die Ventilkugel 34 sitzt in einem Ventilkugelsitz 44, die in einem Ventilschieber 32 ausgebildet ist und die Ventilstößelbohrung 45 abschließt, die einen größeren Innendurchmesser hat als der Außendurchmesser des Ventilstößels 41. Von der Ventilstößelbohrung 45 geht ein Druckluftdurchgang 48 ab, der über eine Zuführbohrung 53 mit dem Förderkanal 40 in Verbindung steht. Der Ventilschieber 32 ist durch O-Ringe 35 gegenüber der Bohrung im Gehäuse 17 abgedichtet.An actuator in the form of a pusher 37 sits in a guide 38 and is movable against a compression spring 39 in the housing 37 in two operating positions. For this purpose the pusher 37 is equipped with a pusher roller 52 which comes to rest on the top of a valve piston 36. The piston 36 has one Valve tappet 41, which extends to a valve ball 34, which belongs to a delivery channel valve 42. The valve ball 34 is seated in a valve ball seat 44, which is formed in a valve slide 32 and closes off the valve tappet bore 45, which has a larger inner diameter than the outer diameter of the valve tappet 41. A compressed air passage 48 extends from the valve tappet bore 45 and passes through a supply bore 53 the delivery channel 40 is connected. The valve slide 32 is sealed by O-rings 35 with respect to the bore in the housing 17.

Der Ventilschieber 32 besitzt eine mittige Ventilschieberbohrung 50, in der eine Druckfeder 33 angeordnet ist, die die Ventilkugel 34 in ihren Ventilsitz 44 drängt. Am unteren Ende des Ventilschiebers 32, der durch eine Ventilstange 29 verlängert ist, befindet sich ein Pneumatikkolbenventil 43. Wie im einzelnen nicht näher dargestellt, steht eine Druckluftzuführung mit einer Druckluftkammer 46 in Verbindung, in die das untere Ende der Ventilstange 29 hineinragt. Die Druckluftkammer 46 steht über eine Pneumatikzylinderkammerzuführbohrung 49 mit der Pneumatikzylinderkammer 47 in Verbindung. O-Ringdichtungen an der Ventilstange 29 sind so angeordnet, daß sie in der zweiten Betriebsstellung eine Verbindung zwischen der Druckluftzuführung in die Druckluftkammer 46 durch die Pneumatikzylinderkammerzuführbohrung 49 mit der Pneumatikzylinderkammer 47 herstellen. In der Druckluftkammer 46 ist eine Druckfeder 28 angeordnet, die die Ventilstange 29 und damit den Ventilschieber 32 nach oben drängt. Über einen Haltering 25 und O-Dichtungen 24 und 26 ist die Druckluftkammer 46 bzw. die Ventilstange gegenüber dem Pneumatikkolben 19 abgedichtet.The valve spool 32 has a central valve spool bore 50, in which a compression spring 33 is arranged, which urges the valve ball 34 into its valve seat 44. At the lower end of the valve slide 32, which is extended by a valve rod 29, there is a pneumatic piston valve 43. As not shown in detail, a compressed air supply is connected to a compressed air chamber 46 into which the lower end of the valve rod 29 projects. The compressed air chamber 46 is connected to the pneumatic cylinder chamber 47 via a pneumatic cylinder chamber feed bore 49. O-ring seals on the valve rod 29 are arranged so that in the second operating position they establish a connection between the compressed air supply into the compressed air chamber 46 through the pneumatic cylinder chamber supply bore 49 with the pneumatic cylinder chamber 47. A compression spring 28 is arranged in the compressed air chamber 46 and urges the valve rod 29 and thus the valve slide 32 upwards. The compressed air chamber 46 and the valve rod are sealed off from the pneumatic piston 19 via a retaining ring 25 and O seals 24 and 26.

Ist das Gerät an die Druckluftquelle angeschlossen, so regelt die Ventilkugel 34 im Ventilsitz 44 den Druckluftdurchgang durch die Druckluftzuführbohrung 48 ab, und es strömt keine Luft aus dem Gerät aus. Wird das Gerät betätigt, indem der Drücker 37 in die erste Betriebsstellung gedrückt wird, so drückt die Rolle 52 den Ventilkolben 36 nach unten, und der Ventilstößel 41 bewegt die Ventilkugel 34 aus dem Ventilsitz 44. Dadurch gelangt Druckluft aus der Ventilschieberbohrung 50 in die Ventilstößelbohrung 45 und von da über die Druckluftzuführbohrung 48 in den Förderkanal 40, so daß am Mundstück 1 ein nicht dargestellter Blindniet angesaugt wird.If the device is connected to the compressed air source, the valve ball 34 in the valve seat 44 regulates the passage of compressed air through the compressed air supply bore 48, and no air flows out of the device. The device is operated by pushing the button 37 into the first operating position is pressed, the roller 52 presses the valve piston 36 downward, and the valve tappet 41 moves the valve ball 34 out of the valve seat 44. As a result, compressed air passes from the valve slide bore 50 into the valve tappet bore 45 and from there via the compressed air supply bore 48 into the delivery channel 40, so that a blind rivet, not shown, is sucked into the mouthpiece 1.

Wird der Drücker 37 weiter in der Führung 38 nach innen gedrückt, so bewegt sich an der Rolle 52 der Ventilkolben 36 weiter nach unten. Er ist bei Erreichen der ersten Betriebsstellung in Berührung mit dem Ventilschieber 32 gekommen und bewegt somit diesen und damit auch die Ventilstange 29 nach unten. Dadurch wird eine Verbindung zwischen der Druckluftzuführung bzw. der mit Druckluft gefüllten Druckkammer 46 über die Pneumatikzylinderzuführbohrung 49 zur Pneumatikzylinderkammer 47 hergestellt. Der Pneumatikkolben wird im Gerät nach oben bewegt und dadurch der Hydraulikkolben veranlaßt, gegen die Druckfeder 12 sich im Gerät nach hinten zu bewegen, wodurch der Nietvorgang durchgeführt wird. Nach dem Nietvorgang wird der Drücker 37 entlastet und kehrt in die erste Betriebsstellung zurück. Dadurch bewegen sich Hydraulik- und Pneumatikkolben wieder zurück, da die Druckluftzuführung an der Ventilstange verschlossen wird und die Verbindung zu einer Entlüftungsbohrung 55 hergestellt wird. Die Ventilkugel 34 gibt jedoch nach wie vor den Ventilsitz 44 frei, so daß weiter Druckluft in den Förderkanal 40 zugeführt wird und der abgerissene Stift in den Stiftauffangbehälter 16 gefördert werden kann. Wird der Drücker 37 restlos entlastet, kehrt auch die Ventilkugel 34 in den Ventilsitz 44 zurück, und die Druckluftzufuhr ist damit restlos abgeschlossen.If the pusher 37 is pressed further inwards in the guide 38, the valve piston 36 on the roller 52 moves further downward. When the first operating position is reached, it comes into contact with the valve slide 32 and thus moves it and thus also the valve rod 29 downward. As a result, a connection is established between the compressed air supply or the pressure chamber 46 filled with compressed air via the pneumatic cylinder feed bore 49 to the pneumatic cylinder chamber 47. The pneumatic piston is moved upwards in the device, thereby causing the hydraulic piston to move backwards against the compression spring 12 in the device, as a result of which the riveting process is carried out. After the riveting process, the pusher 37 is relieved and returns to the first operating position. As a result, the hydraulic and pneumatic pistons move back again, since the compressed air supply on the valve rod is closed and the connection to a ventilation bore 55 is established. However, the valve ball 34 still releases the valve seat 44, so that compressed air is fed further into the delivery channel 40 and the torn-off pin can be conveyed into the pin collecting container 16. If the pusher 37 is completely relieved, the valve ball 34 also returns to the valve seat 44, and the compressed air supply is thus completed.

Damit hat die Erfindung ein Blindnietsetzwerkzeug verfügbar gemacht, bei dem ein ständiger Luftverbrauch vermieden ist und in Betriebspausen die Druckluftzufuhr im Gerät verschlossen ist, ohne daß ein gesondertes Schließventil zu betätigen ist. Das Gerät kommt also mit einem einzigen Betätigungsdrücker aus. Dadurch ist die Bedienung wesentlich vereinfacht, und während kurzer Betätigungspausen wird ein Druckluftverbrauch und die damit verbundenen Austrittsgeräusche vermieden.The invention has thus made available a blind rivet setting tool in which constant air consumption is avoided and the compressed air supply in the device is closed during breaks in operation, without a separate closing valve having to be actuated. So the device comes with a single push button. This considerably simplifies operation, and compressed air consumption and the associated exit noises are avoided during short pauses in operation.

BezugszeichenlisteReference symbol list

11
MundstückMouthpiece
22nd
vordere Hülsefront sleeve
33rd
SpannbackenJaws
44th
O-RingO-ring
55
SpannhülseAdapter sleeve
66
FührungshülseGuide sleeve
77
DruckfederCompression spring
88th
hinterer Teil der Hülserear part of the sleeve
99
HydraulikkolbenHydraulic pistons
10, 1110, 11
O-RingO-ring
1212
DruckfederCompression spring
1313
hinteres Endstückrear end piece
14, 1514, 15
O-RingO-ring
1616
StiftauffangbehälterPen receptacle
1717th
Gehäusecasing
1818th
O-RingO-ring
1919th
PneumatikkolbenPneumatic piston
2020th
PneumatikgehäusePneumatic housing
2121
O-RingO-ring
2222
PneumatikkolbenfortsatzPneumatic piston extension
2323
GehäusekammerHousing chamber
24, 26, 2724, 26, 27
O-RingO-ring
2525th
HalteringRetaining ring
2828
DruckfederCompression spring
2929
VentilstangeValve stem
30, 3130, 31
--
3232
VentilschieberValve spool
3333
DruckfederCompression spring
3434
VentilkugelValve ball
3535
O-RingO-ring
3636
VentilkolbenValve piston
3737
Betätigungsglied, DrückerActuator, pusher
3838
Führungguide
3939
DruckfederCompression spring
4040
FörderkanalConveyor channel
4141
VentilstößelValve lifter
4242
FörderkanalventilDelivery channel valve
4343
PneumatikkolbenventilPneumatic piston valve
4444
VentilkugelsitzValve ball seat
4545
VentilstößelbohrungValve tappet bore
4646
DruckluftkammerCompressed air chamber
4747
PneumatikzylinderkammerPneumatic cylinder chamber
4848
DruckluftzuführbohrungCompressed air supply hole
4949
PneumatikzylinderzuführbohrungPneumatic cylinder feed hole
5050
VentilschieberbohrungValve slide bore
5151
EntlüftungsbohrungVent hole
5252
DrückerrollePress roll
5353
EntlüftungsbohrungVent hole
5454
QuerbohrungCross hole
5555
EntlüftungsbohrungVent hole

Claims (10)

  1. A rivet-setting tool for setting blind rivet nuts, the tool having a conveying duct (40) which extends from the mouthpiece (1) through the head of the tool to the rear and which is of use for removing the torn-off rivet pins,
       having on axial feeding device which can be actuated for upsetting and which comprises a cylinder and piston arrangement comprising a pneumatic piston (19) and a hydraulic piston (9),
       having a compressed air supply facility for actuating the food device and for ejecting the torn-off pins, and
       having on actuating element (37) which is movable into two operative positions, the first a such position opening the conveying duct valve (42) which introduces compressed air to suck the rivet into the conveying duct (40) whereas the second operative position opens a pneumatic piston valve (43) for activating the feeding device, characterised in that when the actuating element (37) is in its normal position a compressed air supply duct (40, 48, 50, 29) between a compressed air chamber (46) and the conveying duct (40) is interrupted by means of the delivery duct valve (42, 34, 44).
  2. A tool according to claim 1, characterised in that the actuating element (37) acts on a valve piston (38) to which a valve push-rod (41) is secured the push-rod (41) moving a ball (34) of a valve out of its seat (44).
  3. A tool according to claim 2, characterised in that the valve push-rod (41) has a smaller diameter than the bore (45) in which it is disposed and a compressed air supply bore (48) extends from the push-rod bore (45) to the conveying duct (40).
  4. A tool according to claim 2 or 3, characterised in that a compression spring (33) forces the ball (34) into its valve seat (44) and is disposed in a central bore (50) of a valve spool (32).
  5. A tool according to any of claims 1 to 4, characterised in that the valve piston (36) engages the spool (32) in the first operative position.
  6. A tool according to any of claims 1 to 5, characterised in that in the second operative position the piston (36) lowers the spool (32) to open a pneumatic piston valve (43) through which compressed air reaches the pneumatic cylinder chamber (47) on the pneumatic piston (19).
  7. A tool according to claim 6, characterised in that the spool (20, 32) is disposed in a compressed air supply bore (48) whose inner diameter is greater than the outer diameter of the spool (29), and an 0-ring seal (27) opens a pneumatic cylinder chamber supply bore (49) in the second operative position of the actuating element (37).
  8. A tool according to any of claims 1 to 7, characterised in that the central bore (50) in the spool is connected to the compressed air chamber (46) near it by a transverse bore (54).
  9. A tool according to any of claims 1 to 8, characterised in that the actuating element is in the for of a presser (37) movable against a compression spring (39) in a guide (38).
  10. A tool according to claim 9, characterised in that the presser (37) has a presser roller (52) which contacts the valve piston (36) on the top thereof.
EP87111206A 1987-08-04 1987-08-04 Rivet setting tool for setting blind rivets Expired - Lifetime EP0302128B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8787111206T DE3775768D1 (en) 1987-08-04 1987-08-04 RIVETING TOOL TO SET BLIND RIVETS.
EP87111206A EP0302128B1 (en) 1987-08-04 1987-08-04 Rivet setting tool for setting blind rivets
US07/227,503 US4866972A (en) 1987-08-04 1988-08-02 Rivet setting tool for setting blind rivets
JP63193552A JP2523163B2 (en) 1987-08-04 1988-08-04 Blind rivet setting tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87111206A EP0302128B1 (en) 1987-08-04 1987-08-04 Rivet setting tool for setting blind rivets

Publications (2)

Publication Number Publication Date
EP0302128A1 EP0302128A1 (en) 1989-02-08
EP0302128B1 true EP0302128B1 (en) 1992-01-02

Family

ID=8197180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111206A Expired - Lifetime EP0302128B1 (en) 1987-08-04 1987-08-04 Rivet setting tool for setting blind rivets

Country Status (4)

Country Link
US (1) US4866972A (en)
EP (1) EP0302128B1 (en)
JP (1) JP2523163B2 (en)
DE (1) DE3775768D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826157A1 (en) * 1998-06-12 1999-12-23 Wirth Maschinenbau Gmbh Device for producing a riveted joint and associated rivet

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ114193A3 (en) * 1993-06-11 1995-01-18 Josef Wihan Rivetting tool
US5490311A (en) * 1994-09-08 1996-02-13 Huck International, Inc. Ergonomic installation tool with selectable vacuum pintail collector
DE29504316U1 (en) * 1995-03-16 1995-04-27 Subotsch Verwaltungs Und Betei Rivet setting tool
GB2301547A (en) * 1995-06-02 1996-12-11 Avdel Systems Ltd Fastener installation tool
US5927140A (en) * 1997-12-16 1999-07-27 The Whitaker Corporation Tool accelerator
DE29822652U1 (en) * 1998-12-22 2000-05-18 Ms Verwaltungs Und Patentgesel Riveting tool
DE10309324B4 (en) * 2003-03-04 2012-08-23 Robert Bosch Gmbh Pressure control unit
WO2005069830A2 (en) * 2004-01-15 2005-08-04 Fulbright David J A fastner installaton system
US7062843B1 (en) * 2005-02-14 2006-06-20 Yu-Ching Lin Straight type riveting gun
GB2424609B (en) * 2005-04-02 2007-10-24 Textron Fastening Syst Ltd Fastener installation tool including means for disabling the tool
GB2447413B (en) * 2007-03-16 2009-03-18 Avdel Uk Ltd Fastener installation tool
KR100915372B1 (en) * 2007-09-18 2009-09-03 김도완 Device for riveting the Skin of Airplane/Aircraft
CZ306423B6 (en) * 2008-09-08 2017-01-18 Rivet Factory Group S.R.O. A method of controlling a pneumatic-hydraulic riveting tool and equipment for controlling compressed air supply into a rotary air engine of the pneumatic-hydraulic tool for performing this method
US8307525B2 (en) * 2009-04-08 2012-11-13 Alcoa Inc. Hand-operated rivet setting tool
CN109991674A (en) * 2017-12-29 2019-07-09 上汽通用五菱汽车股份有限公司 A kind of rivet gas control detection system
US11396038B2 (en) * 2019-09-06 2022-07-26 Makita Corporation Fastening tool
CN110586839A (en) * 2019-09-25 2019-12-20 海宁红狮宝盛科技有限公司 Improved riveting press for processing aviation oxygen support
TWI751773B (en) * 2020-11-05 2022-01-01 車王電子股份有限公司 Set nail box

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3451248A (en) * 1967-01-26 1969-06-24 Star Expansion Ind Corp Rivet setting tool
GB1235855A (en) * 1967-09-06 1971-06-16 Tucker Eyelet Co George Improvements in or relating to blind-riveting tools
GB1489057A (en) * 1973-12-15 1977-10-19 Gkn Screws Fasteners Ltd Blind rivetting tools
US4065952A (en) * 1976-07-17 1978-01-03 Usm Corporation Pull through blind riveting tool
GB2025295B (en) * 1978-06-24 1982-05-12 Gesipa Blindniettechnik Apparatus for collectingbroken-off mandrels of blind rivets
DE2941461A1 (en) * 1978-10-20 1980-05-22 Aerpat Ag TEAR-OFF PIN RIVETING TOOL WITH PIN REMOVAL DEVICE
GB2116102A (en) * 1982-03-08 1983-09-21 Avdel Ltd Riveting tool
US4517820A (en) * 1983-06-22 1985-05-21 Usm Corporation Blind rivet tool
JPS6087945A (en) * 1983-10-20 1985-05-17 Nippon Riki Kk Air riveter
US4580435A (en) * 1984-03-05 1986-04-08 Huck Manufacturing Company Installation tool for pull type fasteners
US4598571A (en) * 1984-04-02 1986-07-08 Usm Corporation Control valve for a mandrel collection system
JPH0244912Y2 (en) * 1985-01-21 1990-11-28
EP0201293B1 (en) * 1985-05-10 1989-07-26 Avdel Systems Limited Breakstem fastener installation tool
DE3532932A1 (en) * 1985-09-14 1987-03-19 Schwab Maschbau RIVETING TOOL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826157A1 (en) * 1998-06-12 1999-12-23 Wirth Maschinenbau Gmbh Device for producing a riveted joint and associated rivet

Also Published As

Publication number Publication date
US4866972A (en) 1989-09-19
DE3775768D1 (en) 1992-02-13
JP2523163B2 (en) 1996-08-07
JPH01104439A (en) 1989-04-21
EP0302128A1 (en) 1989-02-08

Similar Documents

Publication Publication Date Title
EP0302128B1 (en) Rivet setting tool for setting blind rivets
EP0008749B1 (en) Fastener-driving apparatus
DE3112711C2 (en) Pneumatic-hydraulic blind riveting tool
EP1132160B1 (en) Hydropneumatic blind riveter
DE19506942B4 (en) Drive device for a nailing machine
EP0236464B1 (en) Riveting tool
DE69636419T2 (en) Screw guiding device of a device for setting and screwing in screws
EP3446833A1 (en) Pneumatic nail gun with safety valve assembly
DE4324174C2 (en) Blind rivet retaining band for feeding a blind rivet in a continuous riveting machine
DE3338750A1 (en) RELEASE VALVE FOR A PNEUMATIC NAILING MACHINE
DE69720847T2 (en) Fastener driving tool with a valve for entire cycles
EP1724101B1 (en) Safety method for pressing tools
EP3071348B1 (en) Tool for attaching a joining element to a component section
DE2718942C3 (en) Release protection on a pneumatic nailer
EP0456852A1 (en) Riveting tool with automatic rivet feed
DE19512198C2 (en) Riveting device
DE1465115B2 (en) PNEUMATICALLY OPERATED TOOL FOR PRESSING ELECTRICAL CONNECTION TERMINALS
DE3701883C2 (en) Blind rivet setting tool
EP1445069B1 (en) Device for intermediate holding
EP0302136B1 (en) Rivetting tool
DE10160423A1 (en) Device for feeding a connecting element to a processing unit
DE3153057C2 (en) Pneumatic/hydraulic blind riveter
DE19952573C2 (en) Portable work machine
DE146652C (en)
DE2250475A1 (en) CONTROL VALVE FOR COMPRESSED AIR IMPACT DEVICE

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: A1

Designated state(s): DE FR GB IT SE

17P Request for examination filed

Effective date: 19890802

17Q First examination report despatched

Effective date: 19900502

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MASCHINENBAU SUBOTSCH & SCHWAB GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3775768

Country of ref document: DE

Date of ref document: 19920213

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 87111206.6

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040726

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040820

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20040823

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040913

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050804

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060301

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060428

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060428