EP0843606B1 - Method and device for manufacturing wire-lattice mats - Google Patents

Method and device for manufacturing wire-lattice mats Download PDF

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Publication number
EP0843606B1
EP0843606B1 EP97925767A EP97925767A EP0843606B1 EP 0843606 B1 EP0843606 B1 EP 0843606B1 EP 97925767 A EP97925767 A EP 97925767A EP 97925767 A EP97925767 A EP 97925767A EP 0843606 B1 EP0843606 B1 EP 0843606B1
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EP
European Patent Office
Prior art keywords
wires
wire
transverse
tensioning
longitudinal
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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
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EP97925767A
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German (de)
French (fr)
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EP0843606A1 (en
Inventor
Klaus Ritter
Gerhard Ritter
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EVG Entwicklungs und Verwertungs GmbH
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EVG Entwicklungs und Verwertungs GmbH
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F27/00Making wire network, i.e. wire nets
    • B21F27/08Making wire network, i.e. wire nets with additional connecting elements or material at crossings
    • B21F27/10Making wire network, i.e. wire nets with additional connecting elements or material at crossings with soldered or welded crossings

Definitions

  • the invention relates to a method for producing Wire mesh mats crossing at right angles to each other Crossing points welded longitudinal and cross wires, at which the line wires are fed in cycles and the cross wires in the direction transverse to the movement of the longitudinal wires in a welding line moved and welded to the longitudinal wires as well a device for performing the method (see e.g. AT-B-395 229).
  • AT 395 229 is a welding machine for manufacturing known from wire mesh mats, which remedies this deficiency.
  • the welding machine does not have any devices for treatment of the line and / or cross wires, which are due to their Production, pretreatment and / or their handling at the Feed into the welding line with a longitudinal twist or a Residual torsion may be affected.
  • the object of the invention is a method and an apparatus to create that allow, taking advantage of the Advantage of cross wire tensioning on structurally simple and reliable way flat wire mesh mats made of longitudinal and To produce cross wires, the residual twist or residual torsion compensated is.
  • the method according to the invention is characterized by this from that at least one of the cross wires after feeding clamped in the welding line with a predetermined adjustable size and that before welding with the longitudinal wires at least one end of this cross wire with a predetermined one adjustable angle is rotated about its longitudinal axis, whereupon the cross wire so tensioned and twisted at least at one end is welded to the longitudinal wires.
  • the two ends of at least one cross wire by the same large, oppositely directed angles can be rotated. It but can also the ends of within a wire mesh mat successive cross wires by equally large angles, preferably in the same direction.
  • the ends within a wire mesh mat of successive cross wires by different large angles, preferably twisted in the same direction be, the order of the amounts of the angle of rotation is selectable and wherein at least one cross wire is not twisted remains.
  • a device intended to carry out the method with clamping jaws for gripping the cross wire ends and tensioning devices for tensioning the cross wire in the with electrodes equipped welding line of a mesh welding machine has the Features that on both sides of the longitudinal wire feed path Grid welding machine each arranged a twisting and tensioning device is that in each twisting and tensioning device for Clamping a cross wire end one upper clamping body and one lower clamping body can be moved vertically in a guide body and are arranged drivably, each clamping body one essentially horizontally displaceable tension slide has that for twisting a transverse wire end around its Longitudinal axis of the guide body with a bearing pin rotatable in a fixed bearing body and that every torsion and tensioning device can be controlled separately.
  • a cross wire end is preferably used for tensioning its piston rod acting on the upper clamping body, on Guide body attached cylinder provided.
  • the guide body a laterally projecting, parallel to the bearing journal extending pivot pin, with on opposite The piston rod on each side of the pivot pin of a working cylinder attacks.
  • FIGS. 1 to 3 The device shown in FIGS. 1 to 3 is used for Manufacture of wire mesh mats from a family of parallel Longitudinal wires L and crossing them perpendicularly Cross wires Q exist. At the crossing points, the Cross wires Q with the longitudinal wires L using a multi-spot welding machine welded. From this multi-spot welding machine are schematic in Fig. 1 for the sake of clarity only one lower welding bar 1 and one on the welding bar 1 arranged electrode bank 2 with a row of sub-electrodes 3 shown.
  • Each twisting and tensioning device 4, 5 has a bearing body 6, which on one with the lower Welding bar 1 vertical mounting bracket 7 firmly connected is fixed, the bearing body 6 along a vertical Guide groove 8 of the mounting bracket 7 is guided and elongated Adjustment slots 9 according to the diameters of the welding longitudinal and transverse wires is adjustable in height.
  • Each twisting and tensioning device 4, 5 has a twisting plate 10 or 10 'on a laterally projecting Bearing pin 11 and bearings 12 are rotatable in the bearing body 6 is stored.
  • the rotating plates 10, 10 'each have one pivot 13 running parallel to the bearing journal 11.
  • a guide body 17 is fastened, which has a vertically extending guide groove 18.
  • On the guide body 17 is an upper clamping body 19 along the guide groove 18 arranged vertically displaceable, while a lower Clamping body 20 firmly connected to the guide body 17 is.
  • a clamping cylinder 21 fastened to the guide body 17 acts with its piston rod 22 on the upper clamping body 19.
  • the upper clamping body 19 there is an upper clamping slide 23 on bearing rollers 24 at an angle of 15 ° to the horizontal Level slidably supported and with the help of a return spring 25 can be moved back into its starting position.
  • the upper tension slide has a jaw 26 with an inserted clamping piece 27, which has a roughened surface, for example is provided with knurling or toothing around the cross wire to be able to record and clamp without slip.
  • the lower clamping body 20 has an analogous to the upper Clamping slide 23 constructed lower clamping slide 28, that in the lower clamping body 20 at a negative angle of 15 ° to the horizontal plane is mounted and the same Clamping jaws 26 and clamping pieces 27 as the upper clamping slide 23 has.
  • the jaws 26 of the upper and lower clamping slides 23 and 28 are each by an insulating piece 29 from the upper or lower clamping slide 23 or 28 electrically isolated.
  • the torsion clamping devices 4, 5 can be moved against each other in the horizontal direction.
  • Each twisting and tensioning device 4, 5 is with a separately controllable control device, not shown Mistake.
  • the device according to the invention works in the following Way:
  • the cross wire Q is from a feeder device, not shown the multi-spot welding machine in its predetermined
  • the welding position is placed on the longitudinal wires L.
  • the clamping cylinders 21 of the right and the left Twisting and tensioning device 4, 5 activated at the same time, so that the piston rods 22 move down and thereby the upper clamping body 19 in the downward facing Direction of the double arrow P1 along the guide groove 18 of the Move the guide body 17 down.
  • the two tensioning slides 23, 28 each rotate and rotate Clamping device 4, 5 along its inclined to the horizontal plane Guideways within the corresponding clamping bodies 19, 20 to the outside, with the movements of the upper tension slide 23 an outward horizontal component P2 and the movements of the lower clamping slides 28 an opposite, also outward horizontal component P3 have.
  • the ends of the cross wire moved outwards and thus the Cross wire tensioned.
  • the tension force acting on the cross wire depends on the mechanical properties of the cross wire from and is set via the working pressure in the clamping cylinders 21, whereby this may only be chosen so large that the Cross wire stretched sufficiently taut without plastic deformation becomes.
  • the working cylinder 15 of the left and clamping device 4 and the working cylinder 15 'of right turning and tensioning device 5 activated accordingly, so that the twisting plate 10 of the left twisting and tensioning device 4 and the twisting plate 10 'of the right twisting and Clamping device 5 perform opposite rotary movements, whereby the left cross wire end corresponds to a direction of the Double arrow P5 is rotated about its longitudinal axis while the opposite right transverse wire end in a direction of rotation P5 opposite rotation according to the double arrow P6 is twisted.
  • the angle of rotation is adjustable and is, for example, in the range from 0 to 15 °.
  • the upper electrodes of the welding machine are then after twisting the cross wire ends lowered into their welding position, with welding pressure and Welding current applied and the line and cross wires on their Crossing points welded together. After completion the upper electrodes move again during the welding process back to their starting position.
  • the clamping cylinders 21 are then controlled so that their piston rods 22 in their Retract the starting position, whereby the upper clamping body 19th also move upwards and the lower clamping bodies 20 be relieved.
  • the return springs 25 the upper and lower clamping slides 23, 28 in their starting position pushed back so that the jaws 26 open and the cross wire ends are released.
  • the working cylinders 15, 15 'are then controlled such that their piston rods 16 turn the pivot pin 13 back to its starting position.
  • the wire mesh mat is then made accordingly advanced so that in the next cycle of the welding machine a new cross wire fed, tensioned, twisted and on the longitudinal wires can be welded on.
  • the rotary movements can also each in the other directions of rotation of the double arrows P5 and P6 by corresponding activation of the other working cylinders 15 ' or 15.
  • the size of the rotary movements P5, P6 at the two transverse wire ends either the same size or different too choose.
  • the ends one after the other following cross wires either with the same size or with different to twist large angles of rotation. They can do that Direction of rotation of the successive transverse wire ends either be the same or opposite.
  • Cross wires with twisted and not twisted Endings follow each other in freely selectable number and order let, the order of the amounts of the angle of rotation is freely selectable.
  • clamping and / or rotating movements can be done with hydraulic or electromotive drive means or via adjusting spindles respectively.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

PCT No. PCT/AT97/00123 Sec. 371 Date Jan. 19, 1998 Sec. 102(e) Date Jan. 19, 1998 PCT Filed Jun. 11, 1997 PCT Pub. No. WO97/47409 PCT Pub. Date Dec. 18, 1997A method and apparatus for producing wire grid mats from longitudinal wires and transverse wires (L, Q) crossing one another at right angles and welded at the crossing points, in which the longitudinal wires are advanced incrementally and the transverse wires are moved transversely to the motion of the longitudinal wires into a welding line and are welded to the longitudinal wires, and at least one of the transverse wires, after being delivered to the welding line, is clamped with a predetermined adjustable magnitude, and that before being welded to the longitudinal wires at least one end of this transverse wire is rotated by a predetermined adjustable angle about its longitudinal axis, whereupon the transverse wire is welded to the longitudinal wires.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Drahtgittermatten aus einander rechtwinkelig kreuzenden, an den Kreuzungspunkten verschweißten Längs- und Querdrähten, bei welchem die Längsdrähte taktweise vorgeschoben und die Querdrähte in Richtung quer zur Bewegung der Längsdrähte in eine Schweißlinie bewegt und mit den Längsdrähten verschweißt werden sowie eine Vorrichtung zum Durchführen des Verfahrens (siehe z.B. AT-B-395 229).The invention relates to a method for producing Wire mesh mats crossing at right angles to each other Crossing points welded longitudinal and cross wires, at which the line wires are fed in cycles and the cross wires in the direction transverse to the movement of the longitudinal wires in a welding line moved and welded to the longitudinal wires as well a device for performing the method (see e.g. AT-B-395 229).

Aus der SU-837 668 sind ein Schweißverfahren und eine Widerstandsschweißmaschine zum Herstellen von Bewehrungsstahlgittermatten bekannt, bei welchen der Querdraht während des Zuführens zur Schweißlinie gespannt wird. Nachteilig ist hierbei, daß die Spannkraft nicht einstellbar ist, sondern von der konstruktiv vorgegebenen Abstandsvergrößerung der Spannbacken während der Zuführbewegung und von der Federkonstanten etwaiger Entlastungsfedern abhängt.From SU-837 668 are a welding process and a resistance welding machine for the production of reinforcing steel mesh mesh known, in which the cross wire during feeding is stretched to the welding line. The disadvantage here is that the clamping force is not adjustable, but by the design predetermined increase in distance of the jaws during the feed movement and the spring constant, if any Relief springs depends.

Aus der AT 395 229 ist eine Schweißmaschine zum Herstellen von Drahtgittermatten bekannt, die diesen Mangel behebt. Diese Schweißmaschine besitzt jedoch keinerlei Vorrichtungen zum Behandeln der Längs- und/oder Querdrähte, die auf Grund ihrer Herstellung, Vorbehandlung und/oder ihrer Handhabung bei der Zuführung in die Schweißlinie mit einem Längsdrall oder einer Resttorsion behaftet sein können.AT 395 229 is a welding machine for manufacturing known from wire mesh mats, which remedies this deficiency. This However, the welding machine does not have any devices for treatment of the line and / or cross wires, which are due to their Production, pretreatment and / or their handling at the Feed into the welding line with a longitudinal twist or a Residual torsion may be affected.

Aufgabe der Erfindung ist es, ein Verfahren und eine Vorrichtung zu schaffen, die es ermöglichen, unter Ausnutzung des Vorteiles des Querdrahtspannens auf konstruktiv einfache und betriebssichere Weise ebene Drahtgittermatten aus Längs- und Querdrähten herzustellen, deren Restdrall oder Resttorsion ausgeglichen ist. Das erfindungsgemäße Verfahren zeichnet sich dadurch aus, daß zumindest einer der Querdrähte nach dem Zuführen in die Schweißlinie mit vorbestimmter einstellbarer Größe gespannt wird und daß vor dem Verschweißen mit den Längsdrähten zumindest ein Ende dieses Querdrahtes mit einem vorbestimmten einstellbaren Winkel um seine Längsachse verdreht wird, worauf der so gespannte und zumindest an einem Ende verdrehte Querdraht mit den Längsdrähten verschweißt wird.The object of the invention is a method and an apparatus to create that allow, taking advantage of the Advantage of cross wire tensioning on structurally simple and reliable way flat wire mesh mats made of longitudinal and To produce cross wires, the residual twist or residual torsion compensated is. The method according to the invention is characterized by this from that at least one of the cross wires after feeding clamped in the welding line with a predetermined adjustable size and that before welding with the longitudinal wires at least one end of this cross wire with a predetermined one adjustable angle is rotated about its longitudinal axis, whereupon the cross wire so tensioned and twisted at least at one end is welded to the longitudinal wires.

Gemäß einer bevorzugten Ausführungsform der Erfindung können die beiden Enden zumindest eines Querdrahtes um gleich große, entgegengesetzt gerichtete Winkel verdreht werden. Es können aber auch innerhalb einer Drahtgittermatte die Enden von aufeinanderfolgenden Querdrähten um gleich große Winkel, vorzugsweise in der gleichen Richtung, verdreht werden. Alternativ können erfindungsgemäß innerhalb einer Drahtgittermatte die Enden von aufeinanderfolgenden Querdrähten um unterschiedlich große Winkel, vorzugsweise in der gleichen Richtung, verdreht werden, wobei die Aufeinanderfolge der Beträge der Drehwinkel wählbar ist und wobei zumindest ein Querdraht unverdreht bleibt.According to a preferred embodiment of the invention the two ends of at least one cross wire by the same large, oppositely directed angles can be rotated. It but can also the ends of within a wire mesh mat successive cross wires by equally large angles, preferably in the same direction. Alternatively According to the invention, the ends within a wire mesh mat of successive cross wires by different large angles, preferably twisted in the same direction be, the order of the amounts of the angle of rotation is selectable and wherein at least one cross wire is not twisted remains.

Eine zur Durchführung des Verfahrens bestimmte Vorrichtung mit Klemmbacken zum Erfassen der Querdrahtenden und Spanneinrichtungen zum Spannen des Querdrahtes in der mit Elektroden ausgestatteten Schweißlinie einer Gitterschweißmaschine hat die Merkmale, daß zu beiden Seiten der Längsdrahtvorschubbahn der Gitterschweißmaschine je eine Verdreh- und Spanneinrichtung angeordnet ist, daß in jeder Verdreh- und Spanneinrichtung zum Spannen eines Querdrahtendes je ein oberer Spannkörper und ein unterer Spannkörper in einem Führungskörper vertikal verschiebbar und antreibbar angeordnet sind, wobei jeder Spannkörper einen im wesentlichen horizontal verschiebbaren Spannschlitten aufweist, daß zum Verdrehen eines Querdrahtendes um seine Längsachse der Führungskörper mit einem Lagerzapfen drehbar in einem ortsfesten Lagerkörper gelagert ist und daß jede Verdreh- und Spanneinrichtung gesondert ansteuerbar ist.A device intended to carry out the method with clamping jaws for gripping the cross wire ends and tensioning devices for tensioning the cross wire in the with electrodes equipped welding line of a mesh welding machine has the Features that on both sides of the longitudinal wire feed path Grid welding machine each arranged a twisting and tensioning device is that in each twisting and tensioning device for Clamping a cross wire end one upper clamping body and one lower clamping body can be moved vertically in a guide body and are arranged drivably, each clamping body one essentially horizontally displaceable tension slide has that for twisting a transverse wire end around its Longitudinal axis of the guide body with a bearing pin rotatable in a fixed bearing body and that every torsion and tensioning device can be controlled separately.

Vorzugsweise ist zum Spannen eines Querdrahtendes ein mit seiner Kolbenstange auf den oberen Spannkörper einwirkender, am Führungskörper befestigter Arbeitszylinder vorgesehen.A cross wire end is preferably used for tensioning its piston rod acting on the upper clamping body, on Guide body attached cylinder provided.

Gemäß einer Weiterbildung der Erfindung weist der Führungskörper einen seitlich auskragenden, parallel zum Lagerzapfen verlaufenden Verdrehzapfen auf, wobei auf gegenüberliegende Seiten des Verdrehzapfens die Kolbenstange je eines Arbeitszylinders angreift.According to a development of the invention, the guide body a laterally projecting, parallel to the bearing journal extending pivot pin, with on opposite The piston rod on each side of the pivot pin of a working cylinder attacks.

Durch das erfindungsgemäße Spannen der Querdrähte und das Verdrehen ihrer Enden vor dem Verschweißen mit den Längsdrähten werden ein etwaiger Längsdrall und/oder eine Resttorsion in den Querdrähten kompensiert, welche von der Herstellung, Vorbehandlung und/oder Handhabung der Querdrähte bei der Zuführung in die Schweißlinie herrühren. Nach dem Verschweißen der gespannten und an ihren Enden verdrehten Querdrähte mit den Längsdrähten wirken die Querdrähte über die Schweißknoten derart auf die Längsdrähte ein, daß auch ein von der Herstellung, Vorbehandlung und/oder Handhabung bei der Zuführung in die Schweißlinie herrührender Längsdrall oder Resttorsion in den Längsdrähten kompensiert und ausgeglichen wird.By tensioning the cross wires according to the invention and that Twist their ends before welding to the longitudinal wires a possible longitudinal twist and / or a residual torsion in the Cross wires compensated for by the manufacture, pretreatment and / or handling of the cross wires when feeding in the welding line originate. After welding the tensioned and at their ends twisted cross wires with the longitudinal wires the cross wires act on the welding knots in such a way Line wires one that is also one of the manufacture, pretreatment and / or handling when feeding into the welding line longitudinal twist or residual torsion in the longitudinal wires is compensated and balanced.

Weitere Merkmale und Vorteile der Erfindung werden nachfolgend an einem Ausführungsbeispiel unter Bezugnahme auf die Zeichnungen näher erläutert. Es zeigen:

  • Fig. 1 eine Seitenansicht einer erfindungsgemäßen Vorrichtung,
  • Fig. 2 eine Draufsicht der Vorrichtung nach Fig. 1 und
  • Fig. 3 einen Teilausschnitt des oberen und unteren Spannkörpers.
  • Further features and advantages of the invention are explained in more detail below using an exemplary embodiment with reference to the drawings. Show it:
  • 1 is a side view of a device according to the invention,
  • Fig. 2 is a plan view of the device of Fig. 1 and
  • Fig. 3 shows a partial section of the upper and lower clamping body.
  • Die in den Fig. 1 bis 3 dargestellte Vorrichtung dient zum Herstellen von Drahtgittermatten, die aus einer Schar von parallelen Längsdrähten L und aus diese senkrecht kreuzenden Querdrähten Q bestehen. An den Kreuzungspunkten werden die Querdrähte Q mit den Längsdrähten L mit Hilfe einer Vielpunktschweißmaschine verschweißt. Von dieser Vielpunktschweißmaschine sind der besseren Übersicht halber in Fig. 1 schematisch nur ein unterer Schweißbalken 1 sowie eine auf dem Schweißbalken 1 angeordnete Elektrodenbank 2 mit einer Reihe von Unterelektroden 3 dargestellt.The device shown in FIGS. 1 to 3 is used for Manufacture of wire mesh mats from a family of parallel Longitudinal wires L and crossing them perpendicularly Cross wires Q exist. At the crossing points, the Cross wires Q with the longitudinal wires L using a multi-spot welding machine welded. From this multi-spot welding machine are schematic in Fig. 1 for the sake of clarity only one lower welding bar 1 and one on the welding bar 1 arranged electrode bank 2 with a row of sub-electrodes 3 shown.

    Auf dem unteren Schweißbalken 1 der Vielpunktschweißmaschine sind zu beiden Seiten der Vorschubbahn der Längsdrähte L je eine linke und eine rechte Verdreh- und Spanneinrichtung 4 bzw. 5 angeordnet. Jede Verdreh- und Spanneinrichtung 4, 5 weist einen Lagerkörper 6 auf, der an einer mit dem unteren Schweißbalken 1 fest verbundenen vertikalen Aufnahmekonsole 7 befestigt ist, wobei der Lagerkörper 6 entlang einer vertikalen Führungsnut 8 der Aufnahmekonsole 7 geführt wird und über längliche Verstellschlitze 9 entsprechend den Durchmessern der zu verschweißenden Längs- und Querdrähte höheneinstellbar ist.On the lower welding bar 1 of the multi-spot welding machine are on both sides of the feed path of the longitudinal wires L. Left and right twisting and tensioning devices 4 each or 5 arranged. Each twisting and tensioning device 4, 5 has a bearing body 6, which on one with the lower Welding bar 1 vertical mounting bracket 7 firmly connected is fixed, the bearing body 6 along a vertical Guide groove 8 of the mounting bracket 7 is guided and elongated Adjustment slots 9 according to the diameters of the welding longitudinal and transverse wires is adjustable in height.

    Jede Verdreh- und Spanneinrichtung 4, 5 weist eine Verdrehplatte 10 bzw. 10' auf, die über einen seitlich auskragenden Lagerzapfen 11 und Lagerungen 12 in dem Lagerkörper 6 drehbar gelagert ist. Die Verdrehplatten 10, 10' haben jeweils einen parallel zum Lagerzapfen 11 verlaufenden Drehzapfen 13. Zwei einander gegenüberliegende Arbeitszylinder 15, 15' sind mittels je einer Befestigungsplatte 14 am Lagerkörper 6 befestigt und wirken mit ihren Kolbenstangen 16 auf jeweils gegenüberliegende Seiten des Drehzapfens 13.Each twisting and tensioning device 4, 5 has a twisting plate 10 or 10 'on a laterally projecting Bearing pin 11 and bearings 12 are rotatable in the bearing body 6 is stored. The rotating plates 10, 10 'each have one pivot 13 running parallel to the bearing journal 11. Two opposite working cylinders 15, 15 'are attached to the bearing body 6 by means of a mounting plate 14 and act with their piston rods 16 on opposite Sides of the pivot 13.

    Auf der dem Lagerzapfen 11 abgewandten Seite der Verdrehplatten 10, 10' ist jeweils ein Führungskörper 17 befestigt, der eine vertikal verlaufende Führungsnut 18 aufweist. Am Führungskörper 17 ist ein oberer Spannkörper 19 entlang der Führungsnut 18 vertikal verschiebbar angeordnet, während ein unterer Spannkörper 20 fest mit dem Führungskörper 17 verbunden ist. Ein am Führungskörper 17 befestigter Spannzylinder 21 wirkt mit seiner Kolbenstange 22 auf den oberen Spannkörper 19.On the side of the twist plates facing away from the journal 11 10, 10 ', a guide body 17 is fastened, which has a vertically extending guide groove 18. On the guide body 17 is an upper clamping body 19 along the guide groove 18 arranged vertically displaceable, while a lower Clamping body 20 firmly connected to the guide body 17 is. A clamping cylinder 21 fastened to the guide body 17 acts with its piston rod 22 on the upper clamping body 19.

    Im oberen Spannkörper 19 ist ein oberer Spannschlitten 23 auf Lagerwalzen 24 unter einem Winkel von 15° zur horizontalen Ebene verschiebbar gelagert und mit Hilfe einer Rückstellfeder 25 in seine Ausgangslage zurückbewegbar. Der obere Spannschlitten weist eine Klemmbacke 26 mit einem eingesetzten Klemmstück 27 auf, das eine aufgerauhte Oberfläche besitzt, beispielsweise mit einer Rändelung oder Verzahnung versehen ist, um den Querdraht schlupffrei erfassen und festklemmen zu können.In the upper clamping body 19 there is an upper clamping slide 23 on bearing rollers 24 at an angle of 15 ° to the horizontal Level slidably supported and with the help of a return spring 25 can be moved back into its starting position. The upper tension slide has a jaw 26 with an inserted clamping piece 27, which has a roughened surface, for example is provided with knurling or toothing around the cross wire to be able to record and clamp without slip.

    Der untere Spannkörper 20 weist einen analog zum oberen Spannschlitten 23 aufgebauten unteren Spannschlitten 28 auf, der im unteren Spannkörper 20 unter einem negativen Winkel von 15° zur Horizontalebene verschiebbar gelagert ist und die gleichen Klemmbacken 26 und Klemmstücke 27 wie der obere Spannschlitten 23 aufweist.The lower clamping body 20 has an analogous to the upper Clamping slide 23 constructed lower clamping slide 28, that in the lower clamping body 20 at a negative angle of 15 ° to the horizontal plane is mounted and the same Clamping jaws 26 and clamping pieces 27 as the upper clamping slide 23 has.

    Die Klemmbacken 26 des oberen und unteren Spannschlittens 23 bzw. 28 sind durch jeweils ein Isolierstück 29 vom oberen bzw. unteren Spannschlitten 23 bzw. 28 elektrisch isoliert.The jaws 26 of the upper and lower clamping slides 23 and 28 are each by an insulating piece 29 from the upper or lower clamping slide 23 or 28 electrically isolated.

    Zum Einstellen auf unterschiedliche Breiten der herzustellenden Drahtgittermatten sind die Verdrehspanneinrichtungen 4, 5 in horizontaler Richtung gegeneinander verschiebbar.For setting to different widths of the ones to be manufactured Wire mesh mats are the torsion clamping devices 4, 5 can be moved against each other in the horizontal direction.

    Jede Verdreh- und Spanneinrichtung 4, 5 ist mit einer separat ansteuerbaren, nicht dargestellten Steuereinrichtung versehen. Each twisting and tensioning device 4, 5 is with a separately controllable control device, not shown Mistake.

    Die erfindungsgemäße Vorrichtung arbeitet in folgender Weise: Der Querdraht Q wird von einer nicht dargestellten Zubringervorrichtung der Vielpunktschweißmaschine in seine vorbestimmte Schweißposition auf den Längsdrähten L abgelegt. Anschließend werden die Spannzylinder 21 der rechten und der linken Verdreh- und Spanneinrichtung 4, 5 gleichzeitig aktiviert, so daß deren Kolbenstangen 22 sich nach unten bewegen und dadurch die oberen Spannkörper 19 in der nach unten weisenden Richtung des Doppelpfeiles P1 entlang der Führungsnut 18 des Führungskörpers 17 nach unten verschieben. Sobald die Klemmbacken 26 den Querdraht Q an seinen beiden Enden erfaßt haben, bewegen sich die beiden Spannschlitten 23, 28 jeder Verdrehund Spanneinrichtung 4, 5 entlang ihrer zur Horizontalebene geneigten Führungsbahnen innerhalb der entsprechenden Spannkörper 19, 20 nach außen, wobei die Bewegungen der oberen Spannschlitten 23 eine nach außen gerichtete Horizontalkomponente P2 und die Bewegungen der unteren Spannschlitten 28 eine entgegengesetzte, ebenfalls nach außen gerichtete Horizontalkomponente P3 besitzen. Entsprechend diesen Horizontalkomponenten P2, P3 werden die Enden des Querdrahtes nach außen bewegt und damit der Querdraht gespannt. Die auf den Querdraht einwirkende Spannkraft hängt von den mechanischen Eigenschaften des Querdrahtes ab und wird über den Arbeitsdruck in den Spannzylindern 21 eingestellt, wobei dieser nur so groß gewählt werden darf, daß der Querdraht ohne plastische Verformung genügend straff gespannt wird.The device according to the invention works in the following Way: The cross wire Q is from a feeder device, not shown the multi-spot welding machine in its predetermined The welding position is placed on the longitudinal wires L. Subsequently the clamping cylinders 21 of the right and the left Twisting and tensioning device 4, 5 activated at the same time, so that the piston rods 22 move down and thereby the upper clamping body 19 in the downward facing Direction of the double arrow P1 along the guide groove 18 of the Move the guide body 17 down. Once the jaws 26 have gripped the cross wire Q at both ends, the two tensioning slides 23, 28 each rotate and rotate Clamping device 4, 5 along its inclined to the horizontal plane Guideways within the corresponding clamping bodies 19, 20 to the outside, with the movements of the upper tension slide 23 an outward horizontal component P2 and the movements of the lower clamping slides 28 an opposite, also outward horizontal component P3 have. Corresponding to these horizontal components P2, P3 the ends of the cross wire moved outwards and thus the Cross wire tensioned. The tension force acting on the cross wire depends on the mechanical properties of the cross wire from and is set via the working pressure in the clamping cylinders 21, whereby this may only be chosen so large that the Cross wire stretched sufficiently taut without plastic deformation becomes.

    Anschließend wird der Arbeitszylinder 15 der linken Verdreh- und Spanneinrichtung 4 und der Arbeitszylinder 15' der rechten Verdreh- und Spanneinrichtung 5 entsprechend aktiviert, so daß die Verdrehplatte 10 der linken Verdreh- und Spanneinrichtung 4 und die Verdrehplatte 10' der rechten Verdreh- und Spanneinrichtung 5 entgegengesetzte Drehbewegungen ausführen, wodurch das linke Querdrahtende entsprechend einer Richtung des Doppelpfeiles P5 um seine Längsachse verdreht wird, während das gegenüberliegende rechte Querdrahtende in einer zur Drehrichtung P5 entgegengesetzten Drehbewegung entsprechend dem Doppelpfeil P6 verdreht wird. Der Drehwinkel ist einstellbar und liegt beispielsweise im Bereich von 0 bis 15°. Then the working cylinder 15 of the left and clamping device 4 and the working cylinder 15 'of right turning and tensioning device 5 activated accordingly, so that the twisting plate 10 of the left twisting and tensioning device 4 and the twisting plate 10 'of the right twisting and Clamping device 5 perform opposite rotary movements, whereby the left cross wire end corresponds to a direction of the Double arrow P5 is rotated about its longitudinal axis while the opposite right transverse wire end in a direction of rotation P5 opposite rotation according to the double arrow P6 is twisted. The angle of rotation is adjustable and is, for example, in the range from 0 to 15 °.

    Die nicht dargestellten oberen Elektroden der Schweißmaschine werden nach dem Verdrehen der Querdrahtenden anschließend in ihre Schweißposition abgesenkt, mit Schweißdruck und Schweißstrom beaufschlagt und die Längs- und Querdrähte an ihren Kreuzungspunkten miteinander verschweißt. Nach Beendigung des Schweißvorganges bewegen sich die oberen Elektroden wieder in ihre Ausgangslage zurück. Die Spannzylinder 21 werden anschließend derart angesteuert, daß ihre Kolbenstangen 22 in ihre Ausgangslage zurückfahren, wodurch die oberen Spannkörper 19 sich ebenfalls nach oben bewegen und die unteren Spannkörper 20 entlastet werden. Durch die Rückstellfedern 25 werden hierbei die oberen und unteren Spannschlitten 23, 28 in ihre Ausgangslage zurückgedrückt, so daß sich die Klemmbacken 26 öffnen und die Querdrahtenden freigegeben werden. Die Arbeitszylinder 15, 15' werden anschließend derart angesteuert, daß ihre Kolbenstangen 16 die Verdrehzapfen 13 in ihre Ausgangsstellung zurückdrehen. Die Drahtgittermatte wird anschließend entsprechend vorgeschoben, so daß im folgenden Arbeitstakt der Schweißmaschine ein neuer Querdraht zugeführt, gespannt, verdreht und an die Längsdrähte angeschweißt werden kann.The upper electrodes of the welding machine, not shown are then after twisting the cross wire ends lowered into their welding position, with welding pressure and Welding current applied and the line and cross wires on their Crossing points welded together. After completion the upper electrodes move again during the welding process back to their starting position. The clamping cylinders 21 are then controlled so that their piston rods 22 in their Retract the starting position, whereby the upper clamping body 19th also move upwards and the lower clamping bodies 20 be relieved. Through the return springs 25 the upper and lower clamping slides 23, 28 in their starting position pushed back so that the jaws 26 open and the cross wire ends are released. The working cylinders 15, 15 'are then controlled such that their piston rods 16 turn the pivot pin 13 back to its starting position. The wire mesh mat is then made accordingly advanced so that in the next cycle of the welding machine a new cross wire fed, tensioned, twisted and on the longitudinal wires can be welded on.

    Im Rahmen der Erfindung können die Drehbewegungen auch jeweils in den anderen Drehrichtungen der Doppelpfeile P5 bzw. P6 durch entsprechende Aktivierung der anderen Arbeitszylinder 15' bzw. 15 erfolgen. Im Rahmen der Erfindung ist weiterhin möglich, die Größe der Drehbewegungen P5, P6 an den beiden Querdrahtenden entweder gleich groß oder auch unterschiedlich zu wählen. Es besteht im Rahmen der Erfindung außerdem die Möglichkeit, nur ein Ende des Querdrahtes zu verdrehen, während das andere Ende nicht verdreht wird.In the context of the invention, the rotary movements can also each in the other directions of rotation of the double arrows P5 and P6 by corresponding activation of the other working cylinders 15 ' or 15. Within the scope of the invention it is also possible the size of the rotary movements P5, P6 at the two transverse wire ends either the same size or different too choose. Within the scope of the invention there is also the possibility of twisting only one end of the cross wire while the other end is not twisted.

    Im Rahmen der Erfindung ist es außerdem möglich, während der Herstellung der Drahtgittermatte die Enden nacheinander folgender Querdrähte entweder mit gleich großen oder mit unterschiedlich großen Drehwinkeln zu verdrehen. Hiebei können die Drehrichtungen der aufeinanderfolgenden Querdrahtenden entweder gleich oder entgegengesetzt gerichtet sein. Des weiteren ist es im Rahmen der Erfindung möglich, während der Herstellung einer Drahtgittermatte Querdrähte mit verdrehten und nicht verdrehten Enden in frei wählbarer Anzahl und Reihenfolge aufeinander folgen zu lassen, wobei die Aufeinanderfolge der Beträge der Drehwinkel beliebig wählbar ist.In the context of the invention, it is also possible during the manufacture of the wire mesh mat the ends one after the other following cross wires either with the same size or with different to twist large angles of rotation. They can do that Direction of rotation of the successive transverse wire ends either be the same or opposite. Furthermore, it is possible within the scope of the invention, during the manufacture of a Wire mesh mat Cross wires with twisted and not twisted Endings follow each other in freely selectable number and order let, the order of the amounts of the angle of rotation is freely selectable.

    Es versteht sich, daß das dargestellte Ausführungsbeispiel im Rahmen des allgemeinen Erfindungsgedankens verschiedentlich, insbesondere hinsichtlich der Ausgestaltung der Antriebselemente zur Erzielung der Spann- und Drehbewegungen abgewandelt werden kann. Die Spann- und/oder Drehbewegungen können mit hydraulischen oder elektromotorischen Antriebsmitteln oder über Verstellspindeln erfolgen.It is understood that the illustrated embodiment various within the general inventive concept, especially with regard to the design of the drive elements modified to achieve the clamping and rotating movements can. The clamping and / or rotating movements can be done with hydraulic or electromotive drive means or via adjusting spindles respectively.

    Claims (11)

    1. Process for the production of wire gratings consisting of longitudinal wires (L) and transverse wires (Q) intersecting at right angles and welded together at the points of intersection, in which the longitudinal wires (L) are advanced in timed sequence and the transverse wires (Q) are moved into a welding line transversely to the direction of movement of the longitudinal wires (L) and welded to the longitudinal wires (L), characterised in that at least one of the transverse wires (Q) is tensioned to a predetermined adjustable extent after being fed into the welding line and that at least one end of this transverse wire (Q) is twisted about its longitudinal axis through a predetermined adjustable angle before being welded to the longitudinal wires (L), after which the transverse wire (Q) tensioned in this manner and twisted at least at one end is welded to the longitudinal wires (L).
    2. Process according to claim 1, characterised that the two ends of at least one transverse wire (Q) are twisted through equal-sized, oppositely-oriented angles.
    3. Process according to claim 1, characterised in that the two ends of at least one transverse wire (Q) are twisted through different-sized, oppositely-oriented angles.
    4. Process according to one of claims 1 to 3, characterised in that the ends of all of the successive transverse wires (Q) within a wire grating are twisted through equal-sized angles, preferably in the same direction.
    5. Process according to one of claims 1 to 3, characterised in that the ends of successive transverse wires (Q) within a wire grating are twisted through different-sized angles, preferably in the same direction, the sequence of the amounts of the angles of twist being selectable and at least one transverse wire (Q) remaining untwisted.
    6. Device for carrying out the process according to one of claims 1 to 5, comprising clamping jaws (26) for gripping the transverse wire ends and tensioning means (19; 20) for tensioning the transverse wire (Q) in the welding line of a grating welding machine provided with electrodes (3), characterised in that respective twisting and tensioning means (4 and 5) are arranged on either side of the longitudinal wire feed path of the grating welding machine, that an upper tensioning body (19) and a lower tensioning body (20) are arranged in a guide body (17) in such a manner that they are vertically displaceable and drivable in each twisting and tensioning means (4 or 5) in order to tension a transverse wire end, each tensioning body (19 or 20) having a substantially horizontally displaceable tensioning carriage (23 or 28), that the guide body (17) is rotatably supported in a fixed bearing body (6) by means of a bearing journal (11) in order to twist a transverse wire end about its longitudinal axis and that each twisting and tensioning means (4 or 5) can be actuated separately.
    7. Device according to claim 6, characterised in that a working cylinder (21) fixed to the guide body (17) and acting on the upper tensioning body (19) by means of its piston rod (22) is provided for tensioning a transverse wire end.
    8. Device according to either claim 6 or claim 7, characterised in that the guide body (17) has a laterally projecting pivot pin (13) extending parallel to the bearing journal (11), the piston rods (16) of respective working cylinders (15, 15') acting on opposite sides of the pivot pin (13).
    9. Device according to one of claims 6 to 8, characterised in that each upper and lower tensioning carriage (23 or 28) has a clamping jaw (26), each clamping jaw (26) being provided with a clamping piece (27) with a roughened surface for slip-free holding of the transverse wire ends.
    10. Device according to one of claims 6 to 9, characterised in that at least one twisting and tensioning means (4 or 5) is displaceable relative to the other for adaptation to different widths of wire gratings.
    11. Device according to one of claims 6 to 10, characterised in that the bearing body (6) of each twisting and tensioning means (4 or 5) is fixed to the welding machine in a vertically adjustable manner for adaptation to different longitudinal and transverse wire diameters.
    EP97925767A 1996-06-13 1997-06-11 Method and device for manufacturing wire-lattice mats Expired - Lifetime EP0843606B1 (en)

    Applications Claiming Priority (4)

    Application Number Priority Date Filing Date Title
    AT1043/96 1996-06-10
    AT0104396A AT407501B (en) 1996-06-13 1996-06-13 METHOD AND DEVICE FOR THE PRODUCTION OF WIRE GRID
    AT104396 1996-06-13
    PCT/AT1997/000123 WO1997047409A1 (en) 1996-06-13 1997-06-11 Method and device for manufacturing wire-lattice mats

    Publications (2)

    Publication Number Publication Date
    EP0843606A1 EP0843606A1 (en) 1998-05-27
    EP0843606B1 true EP0843606B1 (en) 2001-04-25

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97925767A Expired - Lifetime EP0843606B1 (en) 1996-06-13 1997-06-11 Method and device for manufacturing wire-lattice mats

    Country Status (5)

    Country Link
    US (1) US6045031A (en)
    EP (1) EP0843606B1 (en)
    AT (2) AT407501B (en)
    DE (1) DE59703431D1 (en)
    WO (1) WO1997047409A1 (en)

    Families Citing this family (6)

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    US6241142B1 (en) * 2000-04-24 2001-06-05 Chun Pao Chou Welding device for net member
    EP1704940A1 (en) * 2005-03-21 2006-09-27 H.A. Schlatter AG Positioning device for positioning of transverse wires in a grid welding machine and method of positioning transverse wires in a grid welding machine
    US20070095006A1 (en) * 2005-11-01 2007-05-03 Konersmann Ronald D Lightweight portable concrete enclosure and associated method of construction
    MX337011B (en) * 2008-07-22 2015-12-16 Concreto W S A De C V Improvements in machine for the assembly of electrowelded mesh for forming three-dimensional wire structures.
    AT512400B1 (en) * 2012-07-25 2013-08-15 Evg Entwicklung Verwert Ges Bending machine for wire mesh mats
    GR1008523B (en) 2014-04-01 2015-07-09 Αντωνιος Παναγιωτη Αναγνωστοπουλος Method and system for feeding mesh-producing machinery with longitudinal wires or iron rods

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    AT307210B (en) * 1969-07-15 1973-05-10 Evg Entwicklung Verwert Ges Method and device for the production of welded wire mesh
    US3651834A (en) * 1969-10-27 1972-03-28 Sam Larkin Wire mesh making
    US3814145A (en) * 1970-07-31 1974-06-04 Evg Entwicklung Verwert Ges Wire mesh welding machine
    SE367329B (en) * 1972-10-16 1974-05-27 Elektriska Svetsnings Ab
    US4221319A (en) * 1978-08-09 1980-09-09 Paco Corporation Apparatus for welding metal grating structures
    SU837668A1 (en) * 1978-11-09 1981-06-15 Всесоюзный Проектный Конструкторскийинститут Сварочного Производства Machine resistance spot welding of nets
    AT372886B (en) * 1981-05-14 1983-11-25 Evg Entwicklung Verwert Ges METHOD AND DEVICE FOR PRODUCING WELDED GRID BODIES
    DK146495C (en) * 1981-06-17 1984-04-02 Leif Petersen PROCEDURE FOR MANUFACTURING A METAL FRAME ELEMENT WITH A FIXED, WELDED METAL WIRE NETWORK, NAMELY FOR SITTING FURNITURE
    LU84785A1 (en) * 1983-05-03 1985-03-21 Pierre Decoux METHOD AND APPARATUS FOR SUPPLYING WEFT THREADS OF WELDING MACHINES
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    AT395229B (en) * 1989-05-24 1992-10-27 Evg Entwicklung Verwert Ges SCREEN WELDING MACHINE
    AT401485B (en) * 1989-06-22 1996-09-25 Evg Entwicklung Verwert Ges METHOD AND MACHINE FOR PRODUCING WIRE GRIDS
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    Also Published As

    Publication number Publication date
    ATA104396A (en) 2000-08-15
    EP0843606A1 (en) 1998-05-27
    ATE200748T1 (en) 2001-05-15
    US6045031A (en) 2000-04-04
    DE59703431D1 (en) 2001-05-31
    AT407501B (en) 2001-04-25
    WO1997047409A1 (en) 1997-12-18

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