EP0371956B1 - Method and installation for feeding longitudinal elements to a welding machine for making grids or gratings - Google Patents

Method and installation for feeding longitudinal elements to a welding machine for making grids or gratings Download PDF

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Publication number
EP0371956B1
EP0371956B1 EP89890296A EP89890296A EP0371956B1 EP 0371956 B1 EP0371956 B1 EP 0371956B1 EP 89890296 A EP89890296 A EP 89890296A EP 89890296 A EP89890296 A EP 89890296A EP 0371956 B1 EP0371956 B1 EP 0371956B1
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EP
European Patent Office
Prior art keywords
longitudinal
longitudinal elements
elements
installation according
welding machine
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Expired - Lifetime
Application number
EP89890296A
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German (de)
French (fr)
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EP0371956A2 (en
EP0371956A3 (en
Inventor
Josef Dipl.-Ing. Grabuschnig
Rudolf Dipl.-Ing. Scherr
Klaus Dipl.-Ing. Ritter
Gerhard Dr. Dipl.-Ing. Ritter
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EVG Entwicklungs und Verwertungs GmbH
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EVG Entwicklungs und Verwertungs GmbH
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Publication of EP0371956A3 publication Critical patent/EP0371956A3/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F23/00Feeding wire in wire-working machines or apparatus
    • B21F23/005Feeding discrete lengths of wire or rod
    • 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 feeding longitudinal elements made of round or flat material to a continuous welding machine for gratings or gratings, in which a predetermined length is separated from an endless longitudinal element material strand after straightening the same longitudinal elements and arranged in a group parallel to the insertion line of the welding machine become, whereupon the group as a whole is moved to the insertion line and handed over to the welding machine; the invention further relates to a plant for performing the method.
  • a method of this type is known, which is carried out with the aid of a system which has a device for feeding, straightening and cutting a longitudinal element material strand, a separating and conveying device for the longitudinal elements oriented transversely to the insertion line of the welding machine, a distribution device connected downstream of the same, with which the longitudinal elements can be moved in groups into a transfer device of the welding machine and which is equipped with a supporting part which can be raised and lowered relative to the conveying device, and has a program control device with which the equipment of the system can be controlled.
  • the longitudinal elements for group formation are placed in a comb-like magazine and held positively by it.
  • the longitudinal elements are inserted between the first comb teeth, and a conveyor comb, which engages in the magazine from below, intermittently lifts the longitudinal elements out of the magazine, displaces them by a pitch and lowers them again until the magazine is filled.
  • a support comb finally lifts the finished longitudinal element group and moves it into the insertion line of the welding machine.
  • the separating and conveying device consists in detail of a cyclically released, narrowing drop channel for the longitudinal elements, which is connected downstream of the cutting device, so that these fall vertically into the comb-like magazine in time with the cycle.
  • the distribution device is formed by the aforementioned magazine with an associated conveyor comb and the support part by the support comb.
  • friction wheels engaging in the drop channel are provided, which move a falling longitudinal element axially against an end stop.
  • the longitudinal elements can only be grouped with a predetermined division in the direction transverse to the insertion line, which is predetermined by the division of the comb teeth. Furthermore, due to the repeated lifting and lowering of the previously aligned longitudinal elements out of or into the magazine, an exact alignment of the front ends of the longitudinal elements is no longer guaranteed.
  • a disadvantage of this procedure is the necessarily horizontal and therefore space-consuming arrangement of the magazine, the width of which must correspond at least to the greatest width of the grid to be produced.
  • there is a relatively low working speed due to the slow filling of the magazine by means of the intermittently working straightening and cutting device and because of the use of only one transport carriage, which must remain in the transfer position relative to the welding machine until all the longitudinal wires have been processed by the welding machine.
  • an infinitely adjustable line wire pitch is not possible.
  • a feed device in which a horizontally and parallel to the welding machine arranged transport device for longitudinal wires is formed by an endless, provided with receiving members for the longitudinal wires rotating cross conveyor.
  • the longitudinal wires are conveyed into the receiving members by means of a straightening and cutting device which is arranged in the longitudinal wire direction in front of the transverse conveyor device and can be moved transversely to the longitudinal wire direction.
  • the longitudinal bars which are aligned and cut by means of the straightening and cutting device, are first fed to a storage magazine and then pass through a separating device into a further magazine and from there into a channel.
  • the longitudinal rods are fed from this channel to the receiving members of the cross conveyor by means of a feed device.
  • the longitudinal wires from the magazine can be inserted directly into the receiving members of the cross conveyor.
  • a disadvantage of the first-mentioned embodiment is the fact that a transverse displacement of the feed device consisting of straightening and cutting devices and the corresponding feed devices can only be achieved with considerable design effort; on the other hand, in the case of a stationary feed device, the transverse conveyor device can only be moved past for the purpose of loading with longitudinal wires when the welding machine has removed all the longitudinal wires from the transverse conveyor device.
  • the other two embodiments allow round longitudinal wires to be lifted out of the cross conveyor, and thus also a movement of the cross conveyor immediately after the welding of the Line wires with the first cross wires.
  • longitudinal elements which are rigid in the longitudinal direction, such as in the case of band-shaped, upright supporting bars for gratings, because these cannot be raised or lowered in the direction of their narrow side without deformation or twisting.
  • the invention aims to avoid the disadvantages of the known solutions and to create a method and a system of the type mentioned which enable any parallel grouping of the longitudinal elements with exact mutual alignment of the same in a continuous, time and space-saving manner.
  • This object is achieved according to the invention in a method of the type mentioned in the introduction in that the separated longitudinal elements in the group are arranged on a flat surface without any longitudinal displacement with a freely selectable division, and in the process and in the subsequent direct displacement of the group into the insertion line only with their front Sections are held firmly, preferably as known per se by magnetic force, and raised for transfer to the welding machine.
  • the invention also relates to a system for carrying out the method, with a device for feeding, straightening and cutting a longitudinal element strand, a separating and conveying device for the longitudinal elements oriented transversely to the insertion line of the welding machine, a distribution device downstream of a feed channel of the same, with which the longitudinal elements can be moved in groups into a transfer device of the welding machine and the one relative to the Has conveyor device designed to be raised and lowered, and a program control device with which the facilities of the system can be controlled;
  • This system is characterized according to the invention in that the conveyor device has at least one channel pivotable about its longitudinal axis for the direct reception of the separated longitudinal elements without longitudinal displacement of the same and the conveyor elements connected downstream of the channel, with which the longitudinal elements can also be conveyed individually along the feed channel to the distribution device without longitudinal displacement, that the distribution device has at least two distribution carriages which can be moved independently of one another in the direction transverse to the insertion line and which are provided with devices for non-positively holding the longitudinal elements with selectable trans
  • the distribution device has a section facing the feed device, containing the distribution carriage and a section facing away from the feed device with at least one endless distributor chain which can be driven in the direction of the movement of the distribution carriage against the insertion line.
  • the devices for non-positively holding the longitudinal elements on the wings of the supporting parts consist of essentially plate-shaped elements with electromagnets that can be switched off.
  • the conveyor elements of the conveyor are further formed by conveyor chains with L-shaped carriers.
  • the pivotable longitudinal element receiving channel of the conveying device is assigned a plurality of pivotable deflection fingers arranged along the channel and at least one ejector with which the longitudinal element can be moved into the feed channel.
  • at least two longitudinal element receptacles with associated deflection fingers, ejectors as well as conveying elements and feed channels can be provided, with which longitudinal elements of different lengths, preferably of alternate lengths, can preferably be fed alternately.
  • the feed device has feed elements, straightening tools and cutting devices for at least two longitudinal element material strands.
  • strands of material from supply drums, coils, reels or coils V are continuously drawn off and arrive in the direction of arrow P 1 in a feed device 1.
  • the strands of material can have any cross section and from cold drawn or consist of hot-rolled material, which can be rod-shaped or strip-shaped.
  • band-shaped support rods L are shown, as they are required for the production of welded gratings.
  • the feed device 1 has essentially feed elements 2 for each strand of material, which feed the material into a conveying device 7, a length measuring wheel 3 as well as horizontally acting straightening tools 4 and vertically acting straightening tools 5. At the end of the feed path there are cutting tools 6 which cut longitudinal elements L of selectable length from the material strands.
  • the cut longitudinal elements L by means of an associated, inclined endless conveyor chain 8 in the direction of arrow P2 on a located in a takeover point A, transverse to the longitudinal elements or transversely to the insertion line S movable distribution car 9 a distribution device 30 transported.
  • the longitudinal elements L are received by the distribution carriage 9 in an upper horizontal plane O-O, which is predetermined by the welding machine 41 and is defined by the upper edges or lower edges of the longitudinal elements L, depending on the welding machine type.
  • each distribution carriage 9 or 12 consists of three receiving tables 10 and 11, which are coupled to one another and are arranged one behind the other at a distance in the direction of the longitudinal elements L.
  • hydraulically or pneumatically liftable upper part 36 or 45 which carries switchable flat, plate-shaped electromagnets 13, with the aid of which the longitudinal elements L are non-positively retained on the receiving tables 10, 11 with arbitrarily selectable division in the transverse direction.
  • each distribution car 9 or 12 is carried out in the direction of arrow P3 transverse to the longitudinal elements L, such that each with a Section L of the distribution wagon provided with the longitudinal element L leaves the take-over point A and a subsequent free wagon section reaches the take-over point A.
  • the step length of this positioning movement is set depending on the division of the longitudinal elements L in the grating or grating to be produced.
  • the upper parts 36 and 45 of the tables 10 and 11 are in the raised position when the longitudinal elements L are received.
  • the distribution car shown in Fig. 1 9 After the distribution car shown in Fig. 1 9 is fully equipped with the desired number of longitudinal elements L of the grating or grating to be produced, it travels horizontally on rails 14 in the direction of arrow P3 transversely to the insertion line S to a transfer point B to the longitudinal elements there L to be transferred in groups to a transfer device 31 of the grid welding machine 41.
  • a slide-in carriage 15 of the transfer device 31 is moved in the direction of arrow P14 in the direction of the insertion line S against the receiving tables 10 in such a way that the front ends of the longitudinal elements L are taken up by juxtaposed, for example prism-shaped receptacles 32 and by means of clamping elements 33 can be held with individually adjustable clamping pressure.
  • a comb 16 assigned to the foremost receiving table 10 is pushed back, the function of which will be explained later.
  • the electromagnets 13 are switched off and a lifting grate 17 is raised in the direction of the arrow P7 in order to lift the longitudinal elements L from the magnetic plates 13.
  • the lifting grate 17 consists of several, at the same time, height-adjustable parts which are assigned to the individual receiving tables 10, 11 and endless distribution chains 18 which can be moved transversely to the insertion line S and which run over rollers 19 and the longitudinal elements L at the end of the distribution device 30 facing away from the feed device 1 support.
  • the individual clamping elements 33 or a common clamping bar for the receptacles 32 of the slide-in carriage 15 in the direction of Arrow P15, the longitudinal elements L are fixed in these receptacles 32.
  • the initial clamping force is, however, chosen only so large that a stop ruler 34 can move all longitudinal elements L by moving in the direction of the arrow P 1 to the same size as the front overhangs, the longitudinal elements in the receptacles 32 being displaced accordingly in the direction of their longitudinal axis.
  • the clamping force is increased, the stop ruler 34 pivots in the direction of arrow P17 and thereby releases the feed path for the slide-in carriage 15 in the direction of the welding machine 41.
  • the slide-in carriage 15 is arranged in the direction of the arrow P14 to be longitudinally displaceable on a frame 35 which, during operation, is arranged in a stationary manner with respect to the welding machine 41 and is only longitudinally displaceable in the direction of the arrow P18 for service purposes.
  • the longitudinal elements L are transferred in receptacles 46 of the frame 35, which lie on the side of the frame 35 facing the welding machine 41 in alignment with the receptacles 32 of the insertion carriage 15.
  • clamping elements 47 By actuating clamping elements 47 in the direction of arrow P19, the longitudinal elements L can be fixed individually in these receptacles 46.
  • the upper part 36 is lowered in the direction of arrow P4 in a lower horizontal plane UU (Fig. 2) and moves in this plane UU under the arranged on the distribution car 12 longitudinal elements L in the direction of arrow P3 in the takeover point A. back.
  • the second distribution car 12 can be moved independently of the first distribution car 9.
  • the distribution carriage 12 is arranged with its receiving tables 11 in the direction of the longitudinal elements L behind the receiving tables 10 of the first distributor carriage 9, the receiving tables 10 alternating with the receiving tables 11.
  • the upper part 45 of the receiving table 1 closest to the feeding device 1 is the rear distribution car 12 divisible in the direction of the longitudinal elements.
  • the front portion 45 'of the upper part 45 is displaceable in the direction of the arrow P5 in the direction of the longitudinal elements L.
  • actuating and drive elements for the individual movements are known per se and are not shown for the sake of clarity.
  • the longitudinal elements L When the longitudinal elements L are transferred to the transfer device 31 of the welding machine, the longitudinal elements L only have to be precisely positioned on the distribution car 9, 12 at the transfer point B. At the end facing away from the feeding device 1, an exact positioning of the longitudinal elements L on the distribution device 30 is not necessary. In the exemplary embodiment shown in FIG. 1, the distribution carriages 9, 12 are therefore limited only to the section of the distribution device adjacent to the feed device 1.
  • the distributor chains 18 provided on the end facing away from the feeding device 1 instead of the distributor carriage can be moved in the direction of the arrow P6. These distribution chains 18 are only activated simultaneously with the distribution carriages 9, 12, when they perform a movement in the direction of arrow P3 in the upper horizontal plane OO.
  • the mutual spacing of the recesses of these combs 16 correspond to the smallest possible division of labor of the welding machine, and the width of the recesses is adapted to the diameters in the case of round longitudinal elements or to the dimensions of the narrow sides of these strips in the case of band-shaped longitudinal elements.
  • the combs 16 are interchangeable to match different pitches.
  • a base frame 20 is also shown in FIG. 1, on which the conveying device 7 and the distributing device 30 are arranged.
  • the base frame 20 is displaceable in the direction of the arrow P9 in the direction of the longitudinal elements L for service purposes.
  • the longitudinal elements L cut to length by means of the cutting tools 6 are directly received in the conveying device 7 by an associated pivotable longitudinal element receiving channel 21 without longitudinal displacement.
  • the conveyor chains 6 rotating in the direction of the arrow P2 carry L-shaped carriers 26, with which each longitudinal element L to the end of the associated Feed channel 25 is conveyed.
  • the movement of the conveyor chains 8 can take place in cycles and is adapted to the ejection movement of the ejector device formed from the parts 22, 23, 24 and to the pivoting movement of the longitudinal element receiving channel 21.
  • the L-shaped configuration of the drivers 26 prevents the conveying movement from being disturbed by the pivoting of the longitudinal element receiving channel 21.
  • each longitudinal element L released by the drivers 26 falls in free fall onto a lock 27 closing the feed channel 25 and moving in the direction of the arrow P 1 2.
  • the longitudinal element L arrives at the receiving table 10 or 11 of the distribution wagon 9 or 12 respectively provided, the front ends of the longitudinal elements L being at the height of the cutting tools 6.
  • the lower deflection fingers 28 can be moved analogously to the upper deflection fingers 23 between a fully extended and a dashed position.
  • the feed channel 25 is arranged by means of guide plates 29 which can be pivoted about the arrow P 1, arranged on both sides of the feed channel 25 extended to just above the upper edge of the receiving tables 10, 11 of the distribution car 9, 12.
  • This pivoting movement of the guide plates 29 expediently takes place simultaneously with the movements of the bolt 27 and the associated deflection fingers 28.
  • the preferably alternating supply of two or more longitudinal elements L makes it possible to supply longitudinal elements with different dimensions to the distributing device or to double the conveying capacity of the conveying device 7 when supplying similar longitudinal elements L.
  • the invention is supplied from a decoiler 37, for example overhead, hot-rolled material, such as wire rod, via a descaling device 38 to a cold-forming device 39, which consists of drawing and / or rolling devices. If necessary, devices for profiling or applying ribs can also be provided. If the pulling forces as well as the cross-sectional reductions and dimensions of the material to be processed require it, driven roll stands or additional extraction disks, not shown, can be used.
  • the cold-formed material comes in line into the feed device 1, where it is straightened by the straightening tools 4, 5.
  • these straightening tools expediently consist of roller straightening devices, it having proven advantageous to arrange the straightening rollers in at least two planes which are perpendicular to one another.
  • the longitudinal elements L can be cut to any length combination with the aid of the cutting tools 6 provided at the end of the feed device 1. Since the cutting tools 6 expediently work intermittently and, on the other hand, the cold-forming device 39 is advantageously operated continuously, a buffer (not shown) must be provided between the latter and the feed device 1.
  • the longitudinal elements L are individually displaced transversely to their longitudinal direction and transferred to the distribution device 30, in which the longitudinal elements L are non-positively fixed on the distribution tables 10, 11 in any desired division and then moved in groups across the insertion line S in the plane OO and transferred to the transfer device 31 of the welding machine 41.
  • the slide-in carriage 15 of this transfer device 31 conveys the longitudinal elements L in groups in their longitudinal direction into the welding machine 41, but now opposite to the direction of the feed movement in the feed device 1.
  • the longitudinal elements L are separated in their Longitudinal direction not shifted; accordingly, the front ends of the longitudinal elements move along their entire path from the cutting tools 6 to the transfer device 31 along a line T shown in broken lines in FIG. 3.
  • 4a and 4b show two further embodiments according to the invention for the supply of material to the conveyor 7.
  • it is a hot-rolled material that has already been pretreated in the course of the manufacturing process in such a way that its technical properties correspond to the requirements of the end product and no longer requires cold working.
  • the material is fed directly from the decoiler 37 provided with a drive 48 via a buffer 44 to a straightening device 42 which is designed as a rotor straightening machine.
  • a descaling device can be omitted because the scale layer of the material is removed in the rotor straightening device during the straightening process.
  • the rotor straightening device 42 preferably operates continuously, the cutting tools 6 which operate intermittently in the exemplary embodiments described so far have been replaced by a continuously operating guillotine shear 43 which is controlled by the length measuring wheel 3 in accordance with the predetermined length of the longitudinal elements L.
  • the feed device 2 therefore also works continuously and can be arranged in front of and / or behind the rotor straightening device 42.
  • a roller straightening device with two straightening tools 4, 5 is used as the straightening device, the straightening rollers of which are each arranged in two mutually perpendicular planes. Since the scale layer of the hot-rolled material cannot be removed in roller straightening devices, a separate descaling device 38 must be connected upstream of the straightening tools. For the withdrawal from the decoiler 37 and by the descaling device 38 is in this If a take-off disc 40, for example a capstan disc, is required so that the reel drive can be omitted. Since, in this exemplary embodiment, an intermediate store 44 is arranged between the descaling device 36, which preferably works continuously, and the feed device 1, the cutting tools 6 and the feed device 2 can work intermittently. The cutting tools 6 are again controlled by the length measuring wheel 3.
  • the various movement sequences must be precisely coordinated with one another in order to ensure a continuous flow of material from the coils or reels to the welding machine. For this reason there is an automatic control device, not shown, which controls and controls the individual devices.

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Abstract

Method and installation for feeding longitudinal elements of round or flat material to a welding machine for making grids or gratings, in which method the longitudinal elements, cut off from at least one strand of longitudinal-element material after straightening of the same, are arranged in a group without longitudinal displacement and with selectable spacing in a direction which is transverse to the push-in line, are held in place at least in a positive-locking manner and are moved essentially continuously into the push-in line, the front ends of the longitudinal elements being mutually aligned before the transfer of the longitudinal elements to the welding machine.

Description

Die Erfindung betrifft ein Verfahren zum Zuführen von Längselementen aus Rund- oder Flachmaterial zu einer Durchlauf-Schweißmaschine für Gitter oder Gitterroste, bei dem von einem endlosen Längselementmaterialstrang nach Richten desselben Längselemente vorbestimmter Länge abgetrennt und parallel zur Einschublinie der Schweißmaschine mit gegenseitigem Abstand in einer Gruppe angeordnet werden, worauf die Gruppe als Ganzes in die Einschublinie verlagert und der Schweißmaschine übergeben wird; die Erfindung betrifft ferner eine Anlage zur Durchführung des Verfahrens.The invention relates to a method for feeding longitudinal elements made of round or flat material to a continuous welding machine for gratings or gratings, in which a predetermined length is separated from an endless longitudinal element material strand after straightening the same longitudinal elements and arranged in a group parallel to the insertion line of the welding machine become, whereupon the group as a whole is moved to the insertion line and handed over to the welding machine; the invention further relates to a plant for performing the method.

Aus der DE-OS 21 42 321 ist ein Verfahren dieser Art bekannt, das mit Hilfe einer Anlage durchgeführt wird, die eine Einrichtung zum Zuführen, Richten und Ablängen eines Längselementmaterialstranges, eine quer zur Einschublinie der Schweißmaschine orientierte Vereinzelungs- und Fördereinrichtung für die Längselemente, eine einem Zuführkanal derselben nachgeschaltete Verteileinrichtung, mit welcher die Längselemente gruppenweise in eine Übergabeeinrichtung der Schweißmaschine bewegbar sind und die mit einem relativ zur Fördereinrichtung anhebbar und absenkbar ausgebildeten Tragteil ausgestattet ist, und eine Programmsteuereinrichtung aufweist, mit welcher die Einrichtungen der Anlage steuerbar sind.From DE-OS 21 42 321 a method of this type is known, which is carried out with the aid of a system which has a device for feeding, straightening and cutting a longitudinal element material strand, a separating and conveying device for the longitudinal elements oriented transversely to the insertion line of the welding machine, a distribution device connected downstream of the same, with which the longitudinal elements can be moved in groups into a transfer device of the welding machine and which is equipped with a supporting part which can be raised and lowered relative to the conveying device, and has a program control device with which the equipment of the system can be controlled.

Bei dieser bekannten Lösung werden die Längselemente zur Gruppenbildung in ein kammartiges Magazin abgelegt und von diesem formschlüssig gehalten. Die Längselemente werden dazu jeweils zwischen die ersten Kammzähne eingelegt, und ein in das Magazin von unten eingreifender Förderkamm hebt intermittierend die Längselemente aus dem Magazin aus, versetzt sie um ein Teilungsmaß und senkt sie wieder in das Magazin ab, bis dieses gefüllt ist. Ein Tragkamm hebt schließlich die fertige Längselementgruppe aus und verlagert sie in die Einschublinie der Schweißmaschine.In this known solution, the longitudinal elements for group formation are placed in a comb-like magazine and held positively by it. For this purpose, the longitudinal elements are inserted between the first comb teeth, and a conveyor comb, which engages in the magazine from below, intermittently lifts the longitudinal elements out of the magazine, displaces them by a pitch and lowers them again until the magazine is filled. A support comb finally lifts the finished longitudinal element group and moves it into the insertion line of the welding machine.

Die Vereinzelungs- und Fördereinrichtung besteht im Detail aus einem der Ablängeinrichtung nachgeschalteten, taktend freigegebenen, sich verengenden Fallkanal für die Längselemente, so daß diese hochkant horizontal im Takt in das kammartige Magazin fallen. Die Verteileinrichtung wird durch das erwähnte Magazin mit zugeordnetem Förderkamm und der Tragteil durch den Tragkamm gebildet. Zur gegenseitigen Ausrichtung der vorderen Enden der Längselemente sind in den Fallkanal eingreifende Reibräder vorgesehen, die ein durchfallendes Längselement axial gegen einen Endanschlag bewegen.The separating and conveying device consists in detail of a cyclically released, narrowing drop channel for the longitudinal elements, which is connected downstream of the cutting device, so that these fall vertically into the comb-like magazine in time with the cycle. The distribution device is formed by the aforementioned magazine with an associated conveyor comb and the support part by the support comb. For the mutual alignment of the front ends of the longitudinal elements, friction wheels engaging in the drop channel are provided, which move a falling longitudinal element axially against an end stop.

Bei dieser bekannten Lösung können die Längselemente nur mit einer in Richtung quer zur Einschublinie vorbestimmten Teilung gruppiert werden, die durch die Teilung der Kammzähne vorgegeben ist. Weiters ist durch das wiederholte Ausheben und Wiederabsenken der zuvor ausgerichteten Längselemente aus dem bzw. in das Magazin eine exakte Ausrichtung der vorderen Enden der Längselemente nicht mehr gewährleistet.In this known solution, the longitudinal elements can only be grouped with a predetermined division in the direction transverse to the insertion line, which is predetermined by the division of the comb teeth. Furthermore, due to the repeated lifting and lowering of the previously aligned longitudinal elements out of or into the magazine, an exact alignment of the front ends of the longitudinal elements is no longer guaranteed.

Aus den DE-PSen 20 51 354 und 1,456.661 ist bekannt, von einem Bund abgezogenen Draht durch eine Richteinrichtung hindurch intermittierend um eine wählbare Länge vorzuschieben, Längselemente abzutrennen und diese mittels einer Fördereinrichtung quer zur Einschublinie einem horizontalen Magazin zuzuführen, das aus mehreren schrittweise bewegbaren Ketten mit Aufnahmefächern für je einen Längsdraht besteht. Aus dem als Zwischenspeicher wirkenden Magazin werden die Längsdrähte mit Hilfe eines Transportwagens gruppenweise herausgehoben und quer zur Einschublinie vor eine stationäre Übergabeeinrichtung der Schweißmaschine befördert und an diese übergeben.From DE-PSen 20 51 354 and 1,456,661 it is known to intermittently advance wire from a bundle through a straightening device by a selectable length, to separate longitudinal elements and to feed these to a horizontal magazine by means of a conveyor device transversely to the insertion line, which consists of several chains which can be moved in steps with compartments for one line wire each. The longitudinal wires are lifted out of the magazine acting as an intermediate store in groups with the help of a transport trolley and conveyed transversely to the insertion line in front of a stationary transfer device of the welding machine and transferred to it.

Nachteilig ist bei dieser Vorgangsweise die notwendigerweise horizontale und dadurch platzraubende Anordnung des Magazins, dessen Breite zumindest der größten Breite des herzustellenden Gitters entsprechen muß. Außerdem ergibt sich eine relativ niedrige Arbeitsgeschwindigkeit, bedingt durch die langsame Befüllung des Magazins mittels der intermittierend arbeitenden Richt- und Schneideinrichtung und wegen der Verwendung nur eines Transportwagens, der so lange in der Übergabeposition relativ zur Schweißmaschine verbleiben muß, bis alle Längsdrähte von der Schweißmaschine verarbeitet sind. Des weiteren ist eine stufenlos einstellbare Längsdrahtteilung nicht möglich.A disadvantage of this procedure is the necessarily horizontal and therefore space-consuming arrangement of the magazine, the width of which must correspond at least to the greatest width of the grid to be produced. In addition, there is a relatively low working speed due to the slow filling of the magazine by means of the intermittently working straightening and cutting device and because of the use of only one transport carriage, which must remain in the transfer position relative to the welding machine until all the longitudinal wires have been processed by the welding machine. Furthermore, an infinitely adjustable line wire pitch is not possible.

Aus der DE-PS 23 19 003 ist eine Zuführvorrichtung bekannt, bei welcher eine horizontal und parallel zur Schweißmaschine angeordnete Transporteinrichtung für Längsdrähte von einer endlosen, mit Aufnahmegliedern für die Längsdrähte versehenen umlaufenden Querfördereinrichtung gebildet ist. Die Längsdrähte werden mittels einer in Längsdrahtrichtung vor der Querfördereinrichtung angeordneten, quer zur Längsdrahtrichtung bewegbaren Richt- und Schneideeinrichtung in die Aufnahmeglieder befördert. Gemäß einer anderen Ausführungsform werden die mittels der Richt-und Schneideinrichtung gerichteten und geschnittenen Längsstäbe zunächst einem Vorratsmagazin zugeführt und gelangen dann über eine Vereinzelungseinrichtung in ein weiteres Magazin und von diesem in eine Rinne. Aus dieser Rinne werden die Längsstäbe mittels einer Einzugeinrichtung den Aufnahmegliedern der Querfördereinrichtung zugeführt. Schließlich können nach einem weiteren Ausführungsbeispiel die Längsdrähte aus dem Magazin direkt in die Aufnahmeglieder der Querfördereinrichtung eingebracht werden.From DE-PS 23 19 003 a feed device is known in which a horizontally and parallel to the welding machine arranged transport device for longitudinal wires is formed by an endless, provided with receiving members for the longitudinal wires rotating cross conveyor. The longitudinal wires are conveyed into the receiving members by means of a straightening and cutting device which is arranged in the longitudinal wire direction in front of the transverse conveyor device and can be moved transversely to the longitudinal wire direction. According to another embodiment, the longitudinal bars, which are aligned and cut by means of the straightening and cutting device, are first fed to a storage magazine and then pass through a separating device into a further magazine and from there into a channel. The longitudinal rods are fed from this channel to the receiving members of the cross conveyor by means of a feed device. Finally, according to a further embodiment, the longitudinal wires from the magazine can be inserted directly into the receiving members of the cross conveyor.

Nachteilig bei der ersterwähnten Ausführungsform ist die Tatsache, daß eine Querverlagerung der Zuführeinrichtung bestehend aus Richt- und Schneideeinrichtungen, sowie der entsprechenden Vorschubeinrichtungen nur mit erheblichem konstruktiven Aufwand realisierbar ist; anderseits kann bei ortsfester Zuführeinrichtung eine Vorbeibewegung der Querfördereinrichtung zwecks Beschickung mit Längsdrähten erst dann erfolgen, wenn die Schweißmaschine alle Längsdrähte aus der Querfördereinrichtung entnommen hat.A disadvantage of the first-mentioned embodiment is the fact that a transverse displacement of the feed device consisting of straightening and cutting devices and the corresponding feed devices can only be achieved with considerable design effort; on the other hand, in the case of a stationary feed device, the transverse conveyor device can only be moved past for the purpose of loading with longitudinal wires when the welding machine has removed all the longitudinal wires from the transverse conveyor device.

Die anderen beiden Ausführungsformen erlauben zwar ein Herausheben von runden Längsdrähten aus der Querfördereinrichtung, und damit auch eine Vorbeibewegung der Querfördereinrichtung unmittelbar nach dem Verschweißen der Längsdrähte mit den ersten Querdrähten. Dies ist jedoch bei in Längsrichtung biegesteifen Längselementen, wie bei bandförmigen, hochkant stehenden Tragstäben für Gitterroste, nicht möglich, weil diese sich in Richtung ihrer Schmalseite ohne Verformung bzw. Verwindung nicht anheben oder absenken lassen.The other two embodiments allow round longitudinal wires to be lifted out of the cross conveyor, and thus also a movement of the cross conveyor immediately after the welding of the Line wires with the first cross wires. However, this is not possible in the case of longitudinal elements which are rigid in the longitudinal direction, such as in the case of band-shaped, upright supporting bars for gratings, because these cannot be raised or lowered in the direction of their narrow side without deformation or twisting.

Die Erfindung zielt darauf ab, die geschilderten Nachteile der bekannten Lösungen zu vermeiden und ein Verfahren und eine Anlage der eingangs genannten Art zu schaffen, die eine beliebige Parallelgruppierung der Längselemente mit exakter gegenseitiger Ausrichtung derselben in kontinuierlicher, zeit- und platzsparender Weise ermöglichen.The invention aims to avoid the disadvantages of the known solutions and to create a method and a system of the type mentioned which enable any parallel grouping of the longitudinal elements with exact mutual alignment of the same in a continuous, time and space-saving manner.

Diese Aufgabe wird erfindungsgemäß bei einem Verfahren der einleitend genannten Art dadurch gelöst, daß die abgetrennten Längselemente in der Gruppe ohne Längsverschiebung mit stufenlos frei wählbarer Teilung auf einer ebenen Fläche angeordnet und dabei sowie bei der nachfolgenden unmittelbaren Verlagerung der Gruppe in die Einschublinie nur mit ihren vorderen Abschnitten kraftschlüssig, vorzugsweise wie an sich bekannt durch Magnetkraft, festgehalten und zur Übergabe an die Schweißmaschine angehoben werden.This object is achieved according to the invention in a method of the type mentioned in the introduction in that the separated longitudinal elements in the group are arranged on a flat surface without any longitudinal displacement with a freely selectable division, and in the process and in the subsequent direct displacement of the group into the insertion line only with their front Sections are held firmly, preferably as known per se by magnetic force, and raised for transfer to the welding machine.

Es sei erwähnt, daß es bekannt ist, Gitterstäbe zur Zählung mit Magnetkraft zu verzögern (FR-A-1 510 975), mittels Magnetbalken zu heben und zu verlagern (DE-OS 31 43 712) oder mittels Magnetgliedern zu positionieren (DE-PS 23 19 003), jedoch nicht, sie mit Magnetkraft in Gruppenanordnung kraftschlüssig zu fixieren.It should be mentioned that it is known to delay lattice bars for counting with magnetic force (FR-A-1 510 975), to lift and move them by means of magnetic bars (DE-OS 31 43 712) or to position them by means of magnetic members (DE-PS 23 19 003), but not to fix them with magnetic force in a group arrangement.

Gegenstand der Erfindung ist auch eine Anlage zur Durchführung des Verfahrens, mit einer Einrichtung zum Zuführen, Richten und Ablängen eines Längselementmaterialstranges, einer quer zur Einschublinie der Schweißmaschine orientierten Vereinzelungs- und Fördereinrichtung für die Längselemente, einer einem Zuführkanal derselben nachgeschalteten Verteileinrichtung, mit welcher die Längselemente gruppenweise in eine Übergabeeinrichtung der Schweißmaschine bewegbar sind und die einen relativ zur Fördereinrichtung anhebbar und absenkbar ausgebildeten Tragteil aufweist, und einer Programmsteuereinrichtung, mit welcher die Einrichtungen der Anlage steuerbar sind; diese Anlage zeichnet sich erfindungsgemäß dadurch aus, daß die Fördereinrichtung zumindest eine um ihre Längsachse verschwenkbare Rinne zur unmittelbaren Aufnahme der abgetrennten Längselemente ohne Längsverschiebung derselben und der Rinne nachgeschaltete Förderelemente aufweist, mit welchen die Längselemente ebenfalls ohne Längsverschiebung einzeln entlang des Zuführkanales zur Verteileinrichtung förderbar sind, daß die Verteileinrichtung mindestens zwei unabhängig voneinander in Richtung quer zur Einschublinie bewegbare Verteilerwagen aufweist, die mit Einrichtungen zum kraftschlüssigen Festhalten der Längselemente mit wählbarer Querteilung auf ebenen Tragflächen der höhenverstellbaren Tragteile der Verteilerwagen versehen sind, daß jeder Verteilerwagen von einer Übernahmestelle an der Fördereinrichtung mit angehobenem Tragteil unmittelbar in eine Übergabestelle der Übergabeeinrichtung der Schweißmaschine bewegbar und nach der Rückbewegung zur Fördereinrichtung mit abgesenktem Tragteil entsprechend der Teilung der Längselemente im fertigen Gitter relativ zur Fördereinrichtung schrittweise in die Übernahmestelle bewegbar ist, und daß ein höhenverstellbarer Ausheberost zum Anheben der Längselemente von den Festhalteeinrichtungen der Tragteile der Verteilerwagen vorgesehen ist.The invention also relates to a system for carrying out the method, with a device for feeding, straightening and cutting a longitudinal element strand, a separating and conveying device for the longitudinal elements oriented transversely to the insertion line of the welding machine, a distribution device downstream of a feed channel of the same, with which the longitudinal elements can be moved in groups into a transfer device of the welding machine and the one relative to the Has conveyor device designed to be raised and lowered, and a program control device with which the facilities of the system can be controlled; This system is characterized according to the invention in that the conveyor device has at least one channel pivotable about its longitudinal axis for the direct reception of the separated longitudinal elements without longitudinal displacement of the same and the conveyor elements connected downstream of the channel, with which the longitudinal elements can also be conveyed individually along the feed channel to the distribution device without longitudinal displacement, that the distribution device has at least two distribution carriages which can be moved independently of one another in the direction transverse to the insertion line and which are provided with devices for non-positively holding the longitudinal elements with selectable transverse division on flat wings of the height-adjustable support parts of the distribution carriages, that each distribution carriage is brought up from a takeover point on the conveyor with the support part raised can be moved directly into a transfer point of the transfer device of the welding machine and after the return movement to the conveying device Attention with lowered support part according to the division of the longitudinal elements in the finished grid relative to the conveyor is gradually moved into the takeover point, and that a height-adjustable lifting grate is provided for lifting the longitudinal elements from the holding devices of the support parts of the distribution car.

Mit dem Verfahren bzw. der Anlage gemäß der Erfindung wird eine im wesentlichen kontinuierliche Zufuhr der Längselemente zur Schweißmaschine mit geringem Zeit- und Platzaufwand erreicht, wobei zugleich eine hohe Arbeitsgeschwindigkeit gesichert wird. Infolge des kraftschlüssigen Festhaltens der Längselemente wird auf einfache und wirkungsvolle Weise jede beliebige Querteilung der Parallelgruppierung der Längselemente ermöglicht und zugleich eine exakte gegenseitige Ausrichtung der Längselementenden gewährleistet. Mit der Erfindung können sowohl stab- als auch bandförmige Längselemente beliebigen Querschnittes bzw. beliebiger Querschnittsform zugeführt werden, wobei auch Kombinationen von unterschiedlichen Querschnitten und Längen innerhalb einer Längsstabschar möglich sind. Erfindungsgemäß kann vorteilhaft sowohl kaltgezogenes als auch warmgewalztes Material verarbeitet werden.With the method or the system according to the invention, an essentially continuous supply of the longitudinal elements to the welding machine is achieved with little expenditure of time and space, while at the same time ensuring a high working speed. As a result of the non-positive holding of the longitudinal elements, any desired transverse division of the parallel grouping of the longitudinal elements is made possible in a simple and effective manner and at the same time an exact mutual alignment of the longitudinal element ends is ensured. With the invention, both rod-shaped and band-shaped longitudinal elements of any cross-section or cross-sectional shape can be fed are possible, whereby combinations of different cross sections and lengths within a longitudinal bar share are also possible. According to the invention, both cold-drawn and hot-rolled material can advantageously be processed.

Gemäß einer bevorzugten Ausführungsform der Erfindung weist die Verteileinrichtung einen der Zuführeinrichtung zugekehrten, die Verteilerwagen enthaltenden Abschnitt und einen der Zuführeinrichtung abgekehrten Abschnitt mit zumindest einer endlosen Verteilerkette auf, die in Richtung der Bewegung der Verteilerwagen gegen die Einschublinie antreibbar ist.According to a preferred embodiment of the invention, the distribution device has a section facing the feed device, containing the distribution carriage and a section facing away from the feed device with at least one endless distributor chain which can be driven in the direction of the movement of the distribution carriage against the insertion line.

Nach einem anderen Erfindungsmerkmal bestehen die Einrichtungen zum kraftschlüssigen Festhalten der Längselemente auf den Tragflächen der Tragteile aus im wesentlichen plattenförmigen Elementen mit abschaltbaren Elektromagneten.According to another feature of the invention, the devices for non-positively holding the longitudinal elements on the wings of the supporting parts consist of essentially plate-shaped elements with electromagnets that can be switched off.

Erfindungsgemäß sind ferner die Förderelemente der Fördereinrichtung durch Förderketten mit L-förmigen Mitnehmern gebildet. Vorzugsweise sind dabei der verschwenkbaren Längselement-Aufnahmerinne der Fördereinrichtung mehrere, längs der Rinne angeordnete schwenkbare Ausschlagfinger sowie zumindest ein Auswerfer zugeordnet, mit denen das Längselement in den Zuführkanal bewegbar ist. Dabei können erfindungsgemäß zumindest zwei Längselement-Aufnahmerinnen mit zugeordneten Ausschlagfingern, Auswerfern sowie Förderelementen und Zuführkanälen vorgesehen sein, mit welchen der Verteileinrichtung gegebenenfalls unterschiedlich lange Längselemente vorzugsweise alternierend zuführbar sind.According to the invention, the conveyor elements of the conveyor are further formed by conveyor chains with L-shaped carriers. Preferably, the pivotable longitudinal element receiving channel of the conveying device is assigned a plurality of pivotable deflection fingers arranged along the channel and at least one ejector with which the longitudinal element can be moved into the feed channel. According to the invention, at least two longitudinal element receptacles with associated deflection fingers, ejectors as well as conveying elements and feed channels can be provided, with which longitudinal elements of different lengths, preferably of alternate lengths, can preferably be fed alternately.

Nach einem anderen Merkmal der Erfindung weist die Zuführeinrichtung Vorschuborgane, Richtwerkzeuge und Schneideinrichtungen für zumindest zwei Längselementmaterialstränge auf.According to another feature of the invention, the feed device has feed elements, straightening tools and cutting devices for at least two longitudinal element material strands.

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

  • Fig. 1 eine Perspektivansicht der Anlage;
  • Fig. 2 einen Teilquerschnitt der Fördereinrichtung der Anlage;
  • Fig. 3 ein Schema der Verfahrensdurchführung gemäß der Erfindung, und die
  • Fig. 4a und 4b zwei weitere Ausführungsbeispiele des Verfahrensablaufes gemäß der Erfindung.
Further features and advantages of the invention are explained in more detail below using an exemplary embodiment with reference to the drawing. Show it:
  • Figure 1 is a perspective view of the system.
  • Figure 2 is a partial cross section of the conveyor of the system.
  • Fig. 3 is a scheme of performing the method according to the invention, and the
  • 4a and 4b two further exemplary embodiments of the method sequence according to the invention.

Bei dem in Fig. 1 dargestellten Ausführungsbeispiel der Erfindung werden zwei parallele Materialstränge von Vorratstrommeln, Spulen, Haspeln oder Bunden V endlos abgezogen und gelangen in Richtung des Pfeiles P₁ in eine Zuführeinrichtung 1. Die Materialstränge können jeden beliebigen Querschnitt haben und aus kaltgezogenem oder warmgewalztem Material bestehen, das stab- oder bandförmig sein kann. In Fig. 2 sind beispielsweise bandförmige Tragstäbe L dargestellt, wie sie für die Herstellung von geschweißten Gitterrosten benötigt werden.In the embodiment of the invention shown in Fig. 1, two parallel strands of material from supply drums, coils, reels or coils V are continuously drawn off and arrive in the direction of arrow P 1 in a feed device 1. The strands of material can have any cross section and from cold drawn or consist of hot-rolled material, which can be rod-shaped or strip-shaped. In Fig. 2, for example, band-shaped support rods L are shown, as they are required for the production of welded gratings.

Die Zuführeinrichtung 1 weist je Materialstrang im wesentlichen Vorschuborgane 2, welche das Material in eine Fördereinrichtung 7 vorschieben, ein Längenmeßrad 3 sowie horizonal wirkende Richtwerkzeuge 4 und vertikal wirkende Richtwerkzeuge 5 auf. Am Ende des Vorschubweges befinden sich Schneidwerkzeuge 6, welche von den Materialsträngen Längselemente L wählbarer Länge abschneiden.The feed device 1 has essentially feed elements 2 for each strand of material, which feed the material into a conveying device 7, a length measuring wheel 3 as well as horizontally acting straightening tools 4 and vertically acting straightening tools 5. At the end of the feed path there are cutting tools 6 which cut longitudinal elements L of selectable length from the material strands.

In der der Zuführeinrichtung 1 nachgeschalteten, insbesondere in Fig. 2 gezeigten Fördereinrichtung 7 werden die abgelängten Längselemente L mittels je einer zugeordneten, geneigt verlaufenden endlosen Förderkette 8 in Richtung des Pfeiles P₂ auf einen in einer Übernahmestelle A befindlichen, quer zu den Längselementen bzw. quer zur Einschublinie S beweglichen Verteilerwagen 9 einer Verteilereinrichtung 30 befördert. Die Längselemente L werden vom Verteilerwagen 9 in einer oberen Horizontalebene O-O aufgenommen, die von der Schweißmaschine 41 vorgegeben ist und je nach Schweißmaschinentype von den Oberkanten oder Unterkanten der Längselemente L definiert wird.In the feed device 1 downstream, in particular shown in Fig. 2, the cut longitudinal elements L by means of an associated, inclined endless conveyor chain 8 in the direction of arrow P₂ on a located in a takeover point A, transverse to the longitudinal elements or transversely to the insertion line S movable distribution car 9 a distribution device 30 transported. The longitudinal elements L are received by the distribution carriage 9 in an upper horizontal plane O-O, which is predetermined by the welding machine 41 and is defined by the upper edges or lower edges of the longitudinal elements L, depending on the welding machine type.

Wie aus Fig. 1 hervorgeht, sind zwei parallele Verteilerwagen 9 und 12 vorgesehen. Jeder Verteilerwagen 9 bzw. 12 besteht beim gezeigten Beispiel aus drei miteinander gekoppelten, mit gegenseitigem Abstand in Richtung der Längselemente L hintereinander angeordneten Aufnahmetischen 10 bzw. 11. Jeder Aufnahmetisch 10 bzw. 11 weist einen z.B. hydraulisch oder pneumatisch anhebbaren Oberteil 36 bzw. 45 auf, der abschaltbare ebene, plattenförmig ausgebildete Elektromagnete 13 trägt, mit deren Hilfe die Längselemente L auf den Aufnahmetischen 10, 11 mit beliebig wählbarer Teilung in der Querrichtung kraftschlüssig festgehalten werden.As is apparent from Fig. 1, two parallel distribution cars 9 and 12 are provided. In the example shown, each distribution carriage 9 or 12 consists of three receiving tables 10 and 11, which are coupled to one another and are arranged one behind the other at a distance in the direction of the longitudinal elements L. hydraulically or pneumatically liftable upper part 36 or 45, which carries switchable flat, plate-shaped electromagnets 13, with the aid of which the longitudinal elements L are non-positively retained on the receiving tables 10, 11 with arbitrarily selectable division in the transverse direction.

Die schrittweise Positionierung jedes Verteilerwagens 9 bzw. 12 erfolgt in Richtung des Pfeiles P₃ quer zu den Längselementen L, derart, daß jeweils der mit einem Längselement L versehene Abschnitt des Verteilerwagens die Übernahmestelle A verläßt und ein nachfolgender freier Wagenabschnitt in die Übernahmestelle A gelangt. Die Schrittlänge dieser Positionierbewegung wird in Abhängigkeit von der Teilung der Längselemente L im herzustellenden Gitter bzw. Gitterrost eingestellt. Die Oberteile 36 bzw. 45 der Tische 10 bzw. 11 befinden sich bei der Aufnahme der Längselemente L in der angehobenen Position.The gradual positioning of each distribution car 9 or 12 is carried out in the direction of arrow P₃ transverse to the longitudinal elements L, such that each with a Section L of the distribution wagon provided with the longitudinal element L leaves the take-over point A and a subsequent free wagon section reaches the take-over point A. The step length of this positioning movement is set depending on the division of the longitudinal elements L in the grating or grating to be produced. The upper parts 36 and 45 of the tables 10 and 11 are in the raised position when the longitudinal elements L are received.

Nachdem der in Fig. 1 gezeigte Verteilerwagen 9 vollständig mit der gewünschten Anzahl von Längselementen L des herzustellenden Gitters bzw. Gitterrostes bestückt ist, fährt er auf Schienen 14 horizontal in Richtung des Pfeiles P₃ quer zur Einschublinie S zu einer Übergabestelle B, um dort die Längselemente L gruppenweise an eine Übergabeeinrichtung 31 der Gitterschweißmaschine 41 zu übergeben.After the distribution car shown in Fig. 1 9 is fully equipped with the desired number of longitudinal elements L of the grating or grating to be produced, it travels horizontally on rails 14 in the direction of arrow P₃ transversely to the insertion line S to a transfer point B to the longitudinal elements there L to be transferred in groups to a transfer device 31 of the grid welding machine 41.

Zur Übergabe der Längselemente L wird ein Einschubwagen 15 der Übergabeeinrichtung 31 in Richtung des Pfeiles P₁₄ in Richtung der Einschublinie S derart gegen die Aufnahmetische 10 bewegt, daß die vorderen Enden der Längselemente L von nebeneinander liegenden, beispielsweise prismenförmig ausgebildeten Aufnahmen 32 übernommen und mittels Klemmelementen 33 mit einzeln einstellbarem Klemmdruck festgehalten werden können. Bei dieser Bewegung wird gleichzeitig ein dem vordersten Aufnahmetisch 10 zugeordneter Kamm 16 zurückgeschoben, dessen Funktion später noch erläutert wird. Die Elektromagnete 13 werden abgeschaltet und es wird ein Ausheberost 17 in Richtung des Pfeiles P₇ angehoben, um die Längselemente L von den Magnetplatten 13 abzuheben. Der Ausheberost 17 besteht aus mehreren, gleichzeitig höhenverstellbaren Teilen, welche den einzelnen Aufnahmetischen 10, 11 sowie endlosen, quer zur Einschublinie S bewegbaren Verteilerketten 18 zugeordnet sind, welche über Rollen 19 laufen und die Längselemente L an dem der Zuführeinrichtung 1 abgekehrten Ende der Verteileinrichtung 30 abstützen. Durch Betätigung der einzelnen Klemmelemente 33 oder auch eines gemeinsamen Klemmbalkens für die Aufnahmen 32 des Einschubwagens 15 in Richtung des Pfeiles P₁₅ werden die Längselemente L in diesen Aufnahmen 32 fixiert. Die anfängliche Klemmkraft wird jedoch nur so groß gewählt, daß ein Anschlaglineal 34 durch Bewegung in Richtung des Pfeiles P₁₆ alle Längselemente L auf gleich große vordere Überstände ausrichten kann, wobei die Längselemente in den Aufnahmen 32 in Richtung ihrer Längsachse entsprechend verschoben werden. Nach dem gegenseitigen Ausrichten der Längselemente L wird die Klemmkraft verstärkt, das Anschlaglineal 34 schwenkt in Richtung des Pfeiles P₁₇ hoch und gibt dadurch die Vorschubbahn für den Einschubwagen 15 in Richtung zur Schweißmaschine 41 frei.To transfer the longitudinal elements L, a slide-in carriage 15 of the transfer device 31 is moved in the direction of arrow P₁₄ in the direction of the insertion line S against the receiving tables 10 in such a way that the front ends of the longitudinal elements L are taken up by juxtaposed, for example prism-shaped receptacles 32 and by means of clamping elements 33 can be held with individually adjustable clamping pressure. During this movement, a comb 16 assigned to the foremost receiving table 10 is pushed back, the function of which will be explained later. The electromagnets 13 are switched off and a lifting grate 17 is raised in the direction of the arrow P₇ in order to lift the longitudinal elements L from the magnetic plates 13. The lifting grate 17 consists of several, at the same time, height-adjustable parts which are assigned to the individual receiving tables 10, 11 and endless distribution chains 18 which can be moved transversely to the insertion line S and which run over rollers 19 and the longitudinal elements L at the end of the distribution device 30 facing away from the feed device 1 support. By actuating the individual clamping elements 33 or a common clamping bar for the receptacles 32 of the slide-in carriage 15 in the direction of Arrow P₁₅, the longitudinal elements L are fixed in these receptacles 32. The initial clamping force is, however, chosen only so large that a stop ruler 34 can move all longitudinal elements L by moving in the direction of the arrow P 1 to the same size as the front overhangs, the longitudinal elements in the receptacles 32 being displaced accordingly in the direction of their longitudinal axis. After the mutual alignment of the longitudinal elements L, the clamping force is increased, the stop ruler 34 pivots in the direction of arrow P₁₇ and thereby releases the feed path for the slide-in carriage 15 in the direction of the welding machine 41.

Der Einschubwagen 15 ist in Richtung des Pfeiles P₁₄ längsverschiebbar auf einem Gestell 35 angeordnet, das im Betrieb gegenüber der Schweißmaschine 41 stationär angeordnet und nur zu Servicezwecken in Richtung des Pfeiles P₁₈ längsverschiebbar ist. Beim Einschubvorgang in die Schweißmaschine 41 werden die Längselemente L in Aufnahmen 46 des Gestells 35 übergeben, welche an der der Schweißmaschine 41 zugekehrten Seite des Gestells 35 in Fluchtung mit den Aufnahmen 32 des Einschubwagens 15 liegen. Durch Betätigung von Klemmelementen 47 in Richtung des Pfeiles P₁₉ können die Längselemente L einzeln in diesen Aufnahmen 46 fixiert werden. Der eigentliche Übergabevorgang an die Schweißmaschine 41 und die Positionierung der Längselemente L unter den Elektroden der Schweißmaschine 41 in Abhängigkeit von der gewünschten Aufteilung der Längselemente L im fertigen Gitter erfolgt durch Zusammenwirken des Vorschubes des Einschubwagens 15 und der Betätigung seines Klemmbalkens 33 bzw. seiner einzelnen Klemmelemente mit der Betätigung der Klemmelemente 47 des stationären Gestells 35.The slide-in carriage 15 is arranged in the direction of the arrow P₁₄ to be longitudinally displaceable on a frame 35 which, during operation, is arranged in a stationary manner with respect to the welding machine 41 and is only longitudinally displaceable in the direction of the arrow P₁₈ for service purposes. During the insertion process into the welding machine 41, the longitudinal elements L are transferred in receptacles 46 of the frame 35, which lie on the side of the frame 35 facing the welding machine 41 in alignment with the receptacles 32 of the insertion carriage 15. By actuating clamping elements 47 in the direction of arrow P₁₉, the longitudinal elements L can be fixed individually in these receptacles 46. The actual transfer process to the welding machine 41 and the positioning of the longitudinal elements L under the electrodes of the welding machine 41 as a function of the desired division of the longitudinal elements L in the finished grid takes place by the interaction of the feed of the slide-in carriage 15 and the actuation of its clamping bar 33 or its individual clamping elements with the actuation of the clamping elements 47 of the stationary frame 35.

Nach der Entladung des Verteilerwagens 9 wird dessen Oberteil 36 in Richtung des Pfeiles P₄ in eine untere Horizontalebene U-U (Fig. 2) abgesenkt und fährt in dieser Ebene U-U unter den auf dem Verteilerwagen 12 angeordneten Längselementen L in Richtung des Pfeiles P₃ in die Übernahmestelle A zurück.After unloading the distribution car 9, the upper part 36 is lowered in the direction of arrow P₄ in a lower horizontal plane UU (Fig. 2) and moves in this plane UU under the arranged on the distribution car 12 longitudinal elements L in the direction of arrow P₃ in the takeover point A. back.

Sobald der Verteilerwagen 9 in der Übernahmestelle A angelangt ist, werden die Oberteile 36 seiner Aufnahmetische 10 in Richtung des Pfeiles P₄ von der unteren Horizontalebene U-U in die obere Horizontalebene O-O angehoben und der Wagen ist wieder zur Übernahme von Längselementen L aus der Fördereinrichtung 7 bereit.As soon as the distribution car 9 in the takeover point A has arrived, the upper parts 36 of its receiving tables 10 are raised in the direction of arrow P₄ from the lower horizontal plane UU to the upper horizontal plane OO and the carriage is again ready to take over longitudinal elements L from the conveyor 7.

Wie in Fig. 1 dargestellt und bereits erwähnt worden ist, ist der zweite Verteilerwagen 12 unabhängig vom ersten Verteilerwagen 9 bewegbar. Der Verteilerwagen 12 ist mit seinen Aufnahmetischen 11 in Richtung der Längselemente L jeweils hinter den Aufnahmetischen 10 des ersten Verteilerwagens 9 angeordnet, wobei die Aufnahmetische 10 mit den Aufnahmetischen 11 abwechseln. Infolge dieser Anordnung und wegen der Tatsache, daß die größte Positioniergenauigkeit bei der Aufnahme der Längselemente L auf den Aufnahmetischen 10, 11 an dem der Zuführeinrichtung 1 benachbarten Ende der Längselemente L vorhanden sein muß, ist der Oberteil 45 des der Zuführeinrichtung 1 nächstliegenden Aufnahmetisches 11 des hinteren Verteilerwagens 12 in Richtung der Längselemente teilbar. Der vordere Abschnitt 45′ des Oberteiles 45 ist in Richtung des Pfeiles P₅ in Richtung der Längselemente L verschiebbar.As shown in FIG. 1 and has already been mentioned, the second distribution car 12 can be moved independently of the first distribution car 9. The distribution carriage 12 is arranged with its receiving tables 11 in the direction of the longitudinal elements L behind the receiving tables 10 of the first distributor carriage 9, the receiving tables 10 alternating with the receiving tables 11. As a result of this arrangement and because of the fact that the greatest positioning accuracy when receiving the longitudinal elements L on the receiving tables 10, 11 must be present at the end of the longitudinal elements L adjacent the feeding device 1, the upper part 45 of the receiving table 1 closest to the feeding device 1 is the rear distribution car 12 divisible in the direction of the longitudinal elements. The front portion 45 'of the upper part 45 is displaceable in the direction of the arrow P₅ in the direction of the longitudinal elements L.

Die Betätigungs- und Antriebselemente für die einzelnen Bewegungen sind an sich bekannt und der Übersicht halber nicht dargestellt.The actuating and drive elements for the individual movements are known per se and are not shown for the sake of clarity.

Bei der Übergabe der Längselemente L an die Übergabeeinrichtung 31 der Schweißmaschine müssen die Längselemente L auf den Verteilerwagen 9, 12 nur unmittelbar an der Übergabestelle B genau positioniert werden. An dem der Zuführeinrichtung 1 abgekehrten Ende ist eine genaue Positionierung der Längselemente L auf der Verteileinrichtung 30 nicht notwendig. Bei dem in Fig. 1 dargestellten Ausführungsbeispiel sind daher die Verteilerwagen 9, 12 nur auf den der Zuführeinrichtung 1 benachbarten Abschnitt der Verteileinrichtung beschränkt. Die an dem der Zuführeinrichtung 1 abgekehrten Ende anstelle der Verteilerwagen vorgesehenen Verteilerketten 18 sind in Richtung des Pfeiles P₆ bewegbar. Diese Verteilerketten 18 werden nur dann gleichzeitig mit den Verteilerwagen 9, 12 angesteuert, wenn diese eine Bewegung in Richtung des Pfeiles P₃ in der oberen Horizontalebene O-O ausführen.When the longitudinal elements L are transferred to the transfer device 31 of the welding machine, the longitudinal elements L only have to be precisely positioned on the distribution car 9, 12 at the transfer point B. At the end facing away from the feeding device 1, an exact positioning of the longitudinal elements L on the distribution device 30 is not necessary. In the exemplary embodiment shown in FIG. 1, the distribution carriages 9, 12 are therefore limited only to the section of the distribution device adjacent to the feed device 1. The distributor chains 18 provided on the end facing away from the feeding device 1 instead of the distributor carriage can be moved in the direction of the arrow P₆. These distribution chains 18 are only activated simultaneously with the distribution carriages 9, 12, when they perform a movement in the direction of arrow P₃ in the upper horizontal plane OO.

Der zur Ausrichtung der Längselemente bei der Übernahme von der Fördereinrichtung 7 gegebenenfalls zusätzlich vorgesehene Kamm 16 des jeweils vordersten Aufnahmetisches 10 bzw. 11 ist in Richtung des Pfeiles P₈ bzw. in Richtung der Längselemente L verschiebbar, um dadurch die Übergabe der Längselemente L an die Übergabeeinrichtung 31 der Schweißmaschine zu erleichtern. Die gegenseitigen Abstände der Ausnehmungen dieser Kämme 16 entsprechen der kleinstmöglichen Arbeitsteilung der Schweißmaschine, und die Breite der Ausnehmungen ist bei runden Längselementen den Durchmessern bzw. bei bandförmigen Längselementen den Abmessungen der Schmalseiten dieser Bänder angepaßt. Die Kämme 16 sind austauschbar, um unterschiedlichen Teilungen zu entsprechen.The comb 16 of the foremost receiving table 10 or 11, which is additionally provided for the alignment of the longitudinal elements during the transfer from the conveying device 7, can be displaced in the direction of the arrow P₈ or in the direction of the longitudinal elements L, in order thereby to transfer the longitudinal elements L to the transfer device 31 to facilitate the welding machine. The mutual spacing of the recesses of these combs 16 correspond to the smallest possible division of labor of the welding machine, and the width of the recesses is adapted to the diameters in the case of round longitudinal elements or to the dimensions of the narrow sides of these strips in the case of band-shaped longitudinal elements. The combs 16 are interchangeable to match different pitches.

In Fig. 1 ist ferner ein Grundrahmen 20 dargestellt, auf dem die Fördereinrichtung 7 und die Verteileinrichtung 30 angeordnet sind. Der Grundrahmen 20 ist zu Servicezwecken in Richtung des Pfeiles P₉ in Richtung der Längselemente L verschiebbar.A base frame 20 is also shown in FIG. 1, on which the conveying device 7 and the distributing device 30 are arranged. The base frame 20 is displaceable in the direction of the arrow P₉ in the direction of the longitudinal elements L for service purposes.

Wie in Fig. 2 dargestellt ist, werden die mittels der Schneidwerkzeuge 6 auf Länge geschnittenen Längselemente L in der Fördereinrichtung 7 von je einer zugeordneten verschwenkbaren Längselement-Aufnahmerinne 21 ohne Längsverschiebung unmittelbar aufgenommen. Durch Schwenken der Längselement-Aufnahmerinne 21 in Richtung des Pfeiles P₁₀ nach unten und gleichzeitiges Bewegen von längs der Rinne 21 mehrfach vorhandenen oberen Ausschlagfingern 23 aus der voll ausgezogenen in die strichliert dargestellte Stellung sowie nachfolgendes Schwenken eines Auswerfers 22 in Richtung des Pfeiles P₁₁ gelangt das jeweilige Längselement L über ein Abweiserblech 24, dessen Kontur der Bewegungsbahn des Längselementes L angepaßt ist, in einen zugeordneten geneigten Zuführkanal 25 der Fördereinrichtung 7.As shown in FIG. 2, the longitudinal elements L cut to length by means of the cutting tools 6 are directly received in the conveying device 7 by an associated pivotable longitudinal element receiving channel 21 without longitudinal displacement. By pivoting the longitudinal element receiving channel 21 in the direction of arrow P₁₀ down and simultaneous movement of multiple present along the channel 21 upper deflection fingers 23 from the fully extended into the position shown in dashed lines and subsequent pivoting of an ejector 22 in the direction of arrow P₁₁ the respective Longitudinal element L via a deflector plate 24, the contour of which is adapted to the path of movement of the longitudinal element L, into an associated inclined feed channel 25 of the conveying device 7.

Die in Richtung des Pfeiles P₂ umlaufenden Förderketten 6 tragen L-förmig ausgebildete Mitnehmer 26, mit denen jedes Längselement L bis an das Ende des zugeordneten Zuführkanals 25 befördert wird. Die Bewegung der Förderketten 8 kann taktweise erfolgen und ist an die Auswurfbewegung der aus den Teilen 22, 23, 24 gebildeten Auswerfervorrichtung sowie an die Schwenkbewegung der Längselement-Aufnahmerinne 21 angepaßt. Die L-förmige Ausbildung der Mitnehmer 26 verhindert, daß die Förderbewegung durch das Verschwenken der Längselement-Aufnahmerinne 21 gestört wird.The conveyor chains 6 rotating in the direction of the arrow P₂ carry L-shaped carriers 26, with which each longitudinal element L to the end of the associated Feed channel 25 is conveyed. The movement of the conveyor chains 8 can take place in cycles and is adapted to the ejection movement of the ejector device formed from the parts 22, 23, 24 and to the pivoting movement of the longitudinal element receiving channel 21. The L-shaped configuration of the drivers 26 prevents the conveying movement from being disturbed by the pivoting of the longitudinal element receiving channel 21.

Durch Zusammenführung und entsprechende Formgebung der unteren Endabschnitte der Zuführkanäle 25 ist gewährleistet, daß jedes von den Mitnehmern 26 freigegebene Längselement L in freiem Fall auf einen den Zuführkanal 25 verschließenden, in Richtung des Pfeiles P₁₂ bewegbaren Riegel 27 fällt. Durch Zurückziehen des Riegels 27 und gleichzeitiges Betätigen von mehrfach vorhandenen unteren Ausschlagfinger 28 gelangt das Längselement L auf den Aufnahmetisch 10 bzw. 11 des jeweils bereitstehenden Verteilerwagens 9 bzw. 12, wobei die Vorderenden der Längselemente L sich auf der Höhe der Schneidwerkzeuge 6 befinden. Die unteren Ausschlagfinger 28 sind analog den oberen Ausschlagfingern 23 zwischen einer voll ausgezogenen und einer strichlierten Stellung bewegbar.By bringing together and shaping the lower end portions of the feed channels 25, it is ensured that each longitudinal element L released by the drivers 26 falls in free fall onto a lock 27 closing the feed channel 25 and moving in the direction of the arrow P 1 2. By retracting the latch 27 and simultaneously actuating multiple lower deflection fingers 28, the longitudinal element L arrives at the receiving table 10 or 11 of the distribution wagon 9 or 12 respectively provided, the front ends of the longitudinal elements L being at the height of the cutting tools 6. The lower deflection fingers 28 can be moved analogously to the upper deflection fingers 23 between a fully extended and a dashed position.

Um insbesondere bei bandförmigen, hochkant stehenden Längselementen L ein Umkippen während der Überstellung der Längselemente von der Fördereinrichtung 7 auf den Verteilerwagen 9 bzw. 12 zu verhindern, wird der Zuführkanal 25 mittels um den Pfeil P₁₃ schwenkbare, zu beiden Seiten des Zuführkanals 25 angeordnete Führungsbleche 29 bis knapp über die Oberkante der Aufnahmetische 10, 11 der Verteilerwagen 9, 12 verlängert. Diese Schwenkbewegung der Führungsbleche 29 erfolgt zweckmäßig gleichzeitig mit den Bewegungen des Riegels 27 und der zugeordneten Ausschlagfinger 28.In order to prevent tipping during the transfer of the longitudinal elements from the conveyor 7 to the distribution car 9 or 12, in particular in the case of band-shaped, upright longitudinal elements L, the feed channel 25 is arranged by means of guide plates 29 which can be pivoted about the arrow P 1, arranged on both sides of the feed channel 25 extended to just above the upper edge of the receiving tables 10, 11 of the distribution car 9, 12. This pivoting movement of the guide plates 29 expediently takes place simultaneously with the movements of the bolt 27 and the associated deflection fingers 28.

Die vorzugsweise alternierende Zufuhr von zwei oder mehr Längselementen L ermöglicht es, der Verteileinrichtung Längselemente mit verschiedenen Abmessungen zuzuführen bzw. bei der Zuführung von gleichartigen Längselementen L die Förderleistung der Fördereinrichtung 7 zu verdoppeln.The preferably alternating supply of two or more longitudinal elements L makes it possible to supply longitudinal elements with different dimensions to the distributing device or to double the conveying capacity of the conveying device 7 when supplying similar longitudinal elements L.

Bei dem in Fig. 3 dargestellten Ausführungsbeispiel der Erfindung wird von einer Ablaufhaspel 37, beispielsweise über Kopf, warmgewalztes Material, wie z.B. Walzdraht, über eine Entzunderungseinrichtung 38 einer Kaltverformungseinrichtung 39 zugeführt, die aus Zieh- und/oder Walzeinrichtungen besteht. Falls erforderlich, können auch Einrichtungen zum Profilieren bzw. Aufbringen von Rippen vorgesehen sein. Falls die Ziehkräfte sowie die Querschnittabnahmen und Dimensionen des zu verarbeitenden Materials es erfordern, können angetriebene Walzgerüste bzw. zusätzliche, nicht dargestellte Abzugscheiben Anwendung finden.In the embodiment shown in Fig. 3 the invention is supplied from a decoiler 37, for example overhead, hot-rolled material, such as wire rod, via a descaling device 38 to a cold-forming device 39, which consists of drawing and / or rolling devices. If necessary, devices for profiling or applying ribs can also be provided. If the pulling forces as well as the cross-sectional reductions and dimensions of the material to be processed require it, driven roll stands or additional extraction disks, not shown, can be used.

Das kaltverformte Material gelangt in Linie in die Zuführeinrichtung 1, wo es durch die Richtwerkzeuge 4, 5 geradegerichtet wird. Diese Richtwerkzeuge bestehen beim gezeigten Ausführungsbeispiel zweckmäßig aus Rollenrichteinrichtungen, wobei es sich als vorteilhaft erwiesen hat, die Richtrollen in zumindest zwei, senkrecht zueinander stehenden Ebenen anzuordnen. Die Längselemente L können mit Hilfe der am Ende der Zuführeinrichtung 1 vorgesehenen Schneidwerkzeuge 6 in jeder beliebigen Längenkombination zugeschnitten. Da die Schneidwerkzeuge 6 zweckmäßig intermittierend arbeiten und anderseits die Kaltverformungseinrichtung 39 vorteilhaft kontinuierlich betrieben wird, muß zwischen dieser und der Zuführeinrichtung 1 ein nicht dargestellter Zwischenspeicher vorgesehen werden.The cold-formed material comes in line into the feed device 1, where it is straightened by the straightening tools 4, 5. In the exemplary embodiment shown, these straightening tools expediently consist of roller straightening devices, it having proven advantageous to arrange the straightening rollers in at least two planes which are perpendicular to one another. The longitudinal elements L can be cut to any length combination with the aid of the cutting tools 6 provided at the end of the feed device 1. Since the cutting tools 6 expediently work intermittently and, on the other hand, the cold-forming device 39 is advantageously operated continuously, a buffer (not shown) must be provided between the latter and the feed device 1.

In der nachgeschalteten Fördereinrichtung 7 werden die Längselemente L einzeln quer zu ihrer Längsrichtung verlagert und der Verteileinrichtung 30 übergeben, in welcher die Längselemente L in beliebig wählbarer Teilung kraftschlüssig auf den Verteilertischen 10, 11 fixiert und anschließend in der Ebene O-O gruppenweise quer zur Einschublinie S bewegt und an die Übergabeeinrichtung 31 der Schweißmaschine 41 übergeben werden. Der Einschubwagen 15 dieser Übergabeeinrichtung 31 fördert die Längselemente L gruppenweise in ihrer Längsrichtung in die Schweißmaschine 41, aber nunmehr entgegengesetzt zur Richtung der Zuführbewegung in der Zuführeinrichtung 1. Erfindungsgemäß werden die Längselemente L nach dem Abtrennen in ihrer Längsrichtung nicht verschoben; dementsprechend bewegen sich die Vorderenden der Längselemente auf ihrem gesamten Weg von den Schneidwerkzeugen 6 bis zur Übergabeeinrichtung 31 entlang einer in Fig. 3 strichliert eingezeichneten Linie T.In the downstream conveyor device 7, the longitudinal elements L are individually displaced transversely to their longitudinal direction and transferred to the distribution device 30, in which the longitudinal elements L are non-positively fixed on the distribution tables 10, 11 in any desired division and then moved in groups across the insertion line S in the plane OO and transferred to the transfer device 31 of the welding machine 41. The slide-in carriage 15 of this transfer device 31 conveys the longitudinal elements L in groups in their longitudinal direction into the welding machine 41, but now opposite to the direction of the feed movement in the feed device 1. According to the invention, the longitudinal elements L are separated in their Longitudinal direction not shifted; accordingly, the front ends of the longitudinal elements move along their entire path from the cutting tools 6 to the transfer device 31 along a line T shown in broken lines in FIG. 3.

In den Fig. 4a und 4b sind zwei weitere Ausführungsformen gemäß der Erfindung für die Zufuhr von Material zur Fördereinrichtung 7 dargestellt. In beiden Fällen handelt es sich um warmgewalztes Material, das im Rahmen des Herstellungsverfahrens bereits derart vorbehandelt wurde, daß es in seinen technischen Eigenschaften den Anforderungen des Endproduktes entspricht, und keiner weiteren Kaltverformung mehr bedarf.4a and 4b show two further embodiments according to the invention for the supply of material to the conveyor 7. In both cases, it is a hot-rolled material that has already been pretreated in the course of the manufacturing process in such a way that its technical properties correspond to the requirements of the end product and no longer requires cold working.

Beim Ausführungsbeispiel nach Fig. 4a wird das Material von der mit einem Antrieb 48 versehenen Ablaufhaspel 37 über einen Zwischenspeicher 44 direkt einer Richteinrichtung 42 zugeführt, die als Rotorrichtmaschine ausgebildet ist. Eine Entzunderungseinrichtung kann entfallen, weil die Zunderschicht des Materials während des Richtvorganges in der Rotorrichteinrichtung entfernt wird.In the exemplary embodiment according to FIG. 4a, the material is fed directly from the decoiler 37 provided with a drive 48 via a buffer 44 to a straightening device 42 which is designed as a rotor straightening machine. A descaling device can be omitted because the scale layer of the material is removed in the rotor straightening device during the straightening process.

Da die Rotorrichteinrichtung 42 vorzugsweise kontinuierlich arbeitet, wurden die in den bisher beschriebenen Ausführungsbeispielen intermittierend arbeitenden Schneidwerkzeuge 6 durch eine kontinuierlich arbeitende Schlagschere 43 ersetzt, welche durch das Längenmeßrad 3 entsprechend der vorbestimmten Länge der Längselemente L angesteuert wird. Die Vorschubeinrichtung 2 arbeitet daher ebenfalls kontinuierlich und kann vor und/oder hinter der Rotorrichteinrichtung 42 angeordnet sein.Since the rotor straightening device 42 preferably operates continuously, the cutting tools 6 which operate intermittently in the exemplary embodiments described so far have been replaced by a continuously operating guillotine shear 43 which is controlled by the length measuring wheel 3 in accordance with the predetermined length of the longitudinal elements L. The feed device 2 therefore also works continuously and can be arranged in front of and / or behind the rotor straightening device 42.

Beim Ausführungsbeispiel nach Fig. 4b wird als Richteinrichtung eine Rollenrichteinrichtung mit zwei Richtwerkzeugen 4, 5 verwendet, deren Richtrollen jeweils in zwei, senkrecht zueinander stehenden Ebenen angeordnet sind. Da in Rollenrichteinrichtungen die Zunderschicht des warmgewalzten Materials nicht entfernt werden kann, muß den Richtwerkzeugen eine separate Entzunderungseinrichtung 38 vorgeschaltet werden. Für den Abzug von der Ablaufhaspel 37 und durch die Entzunderungseinrichtung 38 ist in diesem Fall eine Abzugscheibe 40, z.B. eine Spillscheibe, erforderlich, so daß der Haspelantrieb entfallen kann. Da zwischen der vorzugsweise kontinuierlich arbeitenden Entzunderungseinrichtung 36 und der Zuführeinrichtung 1 bei diesem Ausführungsbeispiel ein Zwischenspeicher 44 angeordnet ist, können die Schneidwerkzeuge 6 und die Vorschubeinrichtung 2 intermittierend arbeiten. Die Ansteuerung der Schneidwerkzeuge 6 erfolgt wieder durch das Längenmeßrad 3.In the exemplary embodiment according to FIG. 4b, a roller straightening device with two straightening tools 4, 5 is used as the straightening device, the straightening rollers of which are each arranged in two mutually perpendicular planes. Since the scale layer of the hot-rolled material cannot be removed in roller straightening devices, a separate descaling device 38 must be connected upstream of the straightening tools. For the withdrawal from the decoiler 37 and by the descaling device 38 is in this If a take-off disc 40, for example a capstan disc, is required so that the reel drive can be omitted. Since, in this exemplary embodiment, an intermediate store 44 is arranged between the descaling device 36, which preferably works continuously, and the feed device 1, the cutting tools 6 and the feed device 2 can work intermittently. The cutting tools 6 are again controlled by the length measuring wheel 3.

Zur Durchführung des erfindungsgemäßen Verfahrens müssen die verschiedenen Bewegungsabläufe exakt aufeinander abgestimmt werden, um einen kontinuierlichen Materialfluß von den Spulen bzw. Haspeln bis zur Schweißmaschine zu gewährleisten. Aus diesem Grunde ist eine nicht dargestellte automatische Steuereinrichtung vorhanden, welche die einzelnen Vorrichtungen kontrolliert und steuert.In order to carry out the method according to the invention, the various movement sequences must be precisely coordinated with one another in order to ensure a continuous flow of material from the coils or reels to the welding machine. For this reason there is an automatic control device, not shown, which controls and controls the individual devices.

Im Rahmen der Erfindung ist es außerdem möglich, bereits auf Länge geschnittene und gerichtete Längselemente L einem nicht dargestellten Vorrat zu entnehmen und der Fördereinrichtung 7 zuzuführen.Within the scope of the invention, it is also possible to take longitudinal elements L which have already been cut and directed to length from a supply (not shown) and to feed them to the conveying device 7.

Claims (20)

  1. A method of feeding longitudinal elements (L) of round or flat material to a continuous welding machine (41) for making grates or gratings, comprising severing said longitudinal elements (L) from endless longitudinal-element material after straightening thereof and locating them with a predetermined spacing in a group in parallel to a push-in line (S) extending in the direction of advance of the welding machine (41) and subsequently shifting the entire group into said push-in line (S) and transferring the group to said welding machine (41), characterized in that said severed longitudinal elements (L) in the group are arranged on a flat surface with infinitely freely selectable spacing and without longitudinal displacement thereof, and are concurrently and during the subsequent direct displacement of the group into said push-in line (S) secured and lifted for transfer to said welding machine (41) only at their front portions in a non-positive manner, preferably by magnetic force as known per se.
  2. An installation for performing the method of claim 1, said installation comprising a device for feeding, straightening and cutting to length a supply of longitudinal-element material, a singularizing and conveying device (7) for the longitudinal elements (L), orientated transversely to a push-in line (S) of said welding machine (41), a distributing device (30) which is arranged downstream of a feeding duct (25) for the longitudinal elements and with which said longitudinal elements (L) can be moved in groups to a transfer device (31) of said welding machine (41), said distributing device (30) comprising a support which is adjustable vertically with respect to said conveying device (7), said devices of the installation being adapted to be controlled by means of a program control device, characterized in that said conveying device (7) has at least one channel (21) pivotable about a longitudinal axis thereof for directly receiving said severed longitudinal elements (L) without longitudinal displacement thereof and conveying elements (8, 26) which are arranged downstream of said channel (21) and with which said longitudinal elements (L), likewise without longitudinal displacement, can be conveyed individually along the feeding duct (25) to said distributing device (30), in that said distributing device (30) has at least two distributor carriages (9, 12) which are movable independently of one another transversely to said push-in line (S) and are provided with devices (13) for securing said longitudinal elements (L) in a non-position manner and with selectable transverse spacing on flat supporting surfaces of the vertically adjustable supports (36, 45) of said distributor carriages (9, 12), that each distributor carriage (9, 12) with the support (36, 45) arranged in an upper position can be moved from a receiving position (A) at the conveying device (7) directly into a transfer position (B) of the transfer device of said welding machine, whereas said distributor carriage (9, 12), after returning to said conveying device (7) with said lowered support (36, 45) is adapted to be moved stepwise into said receiving position (A) in accordance with the desired spacing of said longitudinal elements in the finished grating, and in that a vertically adjustable lifting grid (17) is provided for lifting said longitudinal elements (L) from said securing devices (13) of said supports (36, 45) of said distributor carriages (9, 12).
  3. The installation according to claim 2, characterized in that said distributing device (30) has a section facing the feeding device (1) and containing said distributor carriages (9, 12) and a section remote from said feeding device (1) and having at least one endless distributor chain (18) which is adapted to be driven in the direction of movement of said distributor carriages (9, 12) towards said push-in line (S).
  4. The installation according to claim 2 or 3, characterized in that each said distributor carriage (9, 12) has at least two receiving tables (10, 11) coupled to one another and arranged at a distance one behind the other in the direction of said longitudinal elements (L), said receiving tables (10, 11) of said different distributor carriages (9, 12) preferably lying alternately one behind the other; that each said receiving table (10 or 11) has a vertically adjustable top part (36 or 45) forming said longitudinal element supporting surface and that said top part (45) of at least said rear distributor carriage (12) nearest to said feeding device (1) is divided in the direction of said longitudinal elements, and said front section (45') is displaceable in this direction.
  5. The installation according to any of the claims 2 to 4, characterized in that said devices (13) for securing said longitudinal elements (L) in place non-positively on said supporting surfaces (36, 45) of said receiving tables (36, 45) consist of essentially plate-shaped elements having electromagnets which are adapted to be switched off.
  6. The installation according to any of the claims 2 to 5, characterized in that said conveying elements of said conveying device (7) are formed by conveying chains (8) having L-shaped flights (26).
  7. The installation according to any of the claims 2 to 6, characterized in that allocated to said pivotable longitudinal-element receiving channel (21) of said conveying device (7), there are a plurality of pivotable deflecting fingers (23) arranged along said channel and also at least one ejector (22), with which said longitudinal elements (L) are adapted to be moved into said feeding duct (25).
  8. The installation according to any of the claims 2 to 7, characterized in that said feeding duct (25), by means of guide plates (29) pivotable in the direction of said longitudinal elements (L), can be extended down to the top edge of said receiving table (10, 11) in each case located in said receiving position (A).
  9. The installation according to any of the claims 2 to 8, characterized in that at least two longitudinal-element receiving channels (21), having allocated deflecting fingers (23), ejectors (22) as well as conveying elements (8, 26) and feeding ducts (25) are provided with which said longitudinal elements (L), of possible different length, can be fed in an alternating manner to said distributing device (30).
  10. The installation according to any of the claims 2 to 9, characterized in that an interchangeable comb (16) displaceable in the direction of the said longitudinal elements (L) is arranged on said receiving table (10, 11) of said distributor carriages (9, 12) in each case adjacent to said feeding device (1).
  11. The installation according to claim 10, characterized in that recesses of said comb (16) are adapted to the smallest possible longitudinal-element working spacing of said welding machine as well as to the width dimensions of said longitudinal elements.
  12. The installation according to claim 10, characterized in that said recesses of said comb (16) are formed in mutually adjustable comb parts for the purpose of changing their size.
  13. The installation according to any of the claims 2 to 12, characterized in that a push-in carriage (15) movable along said push-in line (S) is arranged in the delivery position (B), said push-in carriage (15) having receptables (32) and clamping elements (33) for said front ends of said longitudinal elements (L), clamping pressure of each said clamping element being individually adjustable.
  14. The installation according to claim 13, characterized in that an alignment guide bar (34) movable towards said front ends of said longitudinal elements (L) is mounted on said push-in carriage (15).
  15. The installation according to claim 13 or 14, characterized in that said push-in carriage (15) is adapted to be moved in the direction of said push-in line (S) in a support (35) fixed relatively to said welding machine (41), said support (35), on a side thereof facing said welding machine (41), having longitudinal-element receptacles (46) which are arranged in alignment with said receptacles (32) and clamping elements (33) of said push-in carriage and in which said longitudinal elements (L) can be fixed individually by means of clamping elements (47).
  16. The installation according to claim 2, characterized in that said feeding device (1) has feed members (2), straightening tools (4, 5) and cutting devices (6, 43) for at least two supplies of longitudinal-element material.
  17. The installation according to claim 16, characterized in that said feeding device (1) for each supply of longitudinal-element material has two straightening tools (4, 5) acting at right angles to one another and at right angles to a running direction of the materials.
  18. The installation according to claim 16 or 17, characterized in that a cold-working device (39) is connected in front of said feeding device (1) (Fig. 3).
  19. The installation according to any of the claims 16 to 18, characterized in that said feeding device (1) is for hot-rolled material, and has a rotor-type straightening device (42) and continuously working guillotine shears (43) for each supply of longitudinal-element material (Fig. 4a).
  20. The installation according to any of the claims 16 to 19, characterized in that said the feeding device (1) is for hot-rolled material, and has a roller-type straightening device (4, 5) and a descaling device (38) connected in front of said straightening device (4, 5) for each supply of longitudinal-element material (Fig. 4b).
EP89890296A 1988-11-30 1989-11-15 Method and installation for feeding longitudinal elements to a welding machine for making grids or gratings Expired - Lifetime EP0371956B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0294888A AT400934B (en) 1988-11-30 1988-11-30 METHOD AND SYSTEM FOR FEEDING LENGTH ELEMENTS FROM ROUND OR FLAT MATERIAL TO A CONTINUOUS WELDING MACHINE FOR GRIDS OR GRIDS
AT2948/88 1988-11-30

Publications (3)

Publication Number Publication Date
EP0371956A2 EP0371956A2 (en) 1990-06-06
EP0371956A3 EP0371956A3 (en) 1990-08-16
EP0371956B1 true EP0371956B1 (en) 1993-09-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89890296A Expired - Lifetime EP0371956B1 (en) 1988-11-30 1989-11-15 Method and installation for feeding longitudinal elements to a welding machine for making grids or gratings

Country Status (4)

Country Link
US (1) US5020575A (en)
EP (1) EP0371956B1 (en)
AT (2) AT400934B (en)
DE (1) DE58905536D1 (en)

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DE102020212480A1 (en) 2020-10-02 2022-04-07 Wafios Aktiengesellschaft Method and device for feeding an elongate workpiece to a forming machine

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EP1700650A1 (en) 2005-03-07 2006-09-13 EVG Entwicklungs- u. Verwertungs- Gesellschaft m.b.H. Method and device for positioning cut wires or rods
DE102020212480A1 (en) 2020-10-02 2022-04-07 Wafios Aktiengesellschaft Method and device for feeding an elongate workpiece to a forming machine

Also Published As

Publication number Publication date
ATA294888A (en) 1995-09-15
EP0371956A2 (en) 1990-06-06
AT400934B (en) 1996-04-25
ATE94098T1 (en) 1993-09-15
US5020575A (en) 1991-06-04
DE58905536D1 (en) 1993-10-14
EP0371956A3 (en) 1990-08-16

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