EP0549761A1 - Machine for making latticework mats consisting of welded longitudinal and transverse wires. - Google Patents

Machine for making latticework mats consisting of welded longitudinal and transverse wires.

Info

Publication number
EP0549761A1
EP0549761A1 EP92914885A EP92914885A EP0549761A1 EP 0549761 A1 EP0549761 A1 EP 0549761A1 EP 92914885 A EP92914885 A EP 92914885A EP 92914885 A EP92914885 A EP 92914885A EP 0549761 A1 EP0549761 A1 EP 0549761A1
Authority
EP
European Patent Office
Prior art keywords
bending
wire
longitudinal
bent
guide block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92914885A
Other languages
German (de)
French (fr)
Other versions
EP0549761B1 (en
Inventor
Klaus Ritter
Gerhard Ritter
Anton Lassbacher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EVG Entwicklungs und Verwertungs GmbH
Original Assignee
EVG Entwicklungs und Verwertungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EVG Entwicklungs und Verwertungs GmbH filed Critical EVG Entwicklungs und Verwertungs GmbH
Publication of EP0549761A1 publication Critical patent/EP0549761A1/en
Application granted granted Critical
Publication of EP0549761B1 publication Critical patent/EP0549761B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
    • B21D11/125—Bending wire nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
    • B21F27/14—Specially bending or deforming free wire ends

Definitions

  • the invention relates to a machine for processing lattice mats made of longitudinal and transverse wires welded to one another, with a device for bending back transverse wire end parts protruding beyond the longitudinal edge wires of the lattice mat to the longitudinal edge wires in the form of loops, the bending device being an approximately circular-cylindrical, in Bending template displaceable in the direction of its axis in a guide block and a bending tool arranged eccentrically on a bending plate and pivotable about the bending template and the guide block opposite the bending plate forms a support surface for the wire to be bent, and wherein the bending device preferably a device for welding the bent back Cross wire end pieces with the longitudinal edge wires and, if appropriate, also a device for folding the loops are connected downstream.
  • a bending device is known from AT-PS 377 713, in which the approximately circular-cylindrical bending template between a working position in which the end faces of the bending template and the bending plate touch and a rest position in which these two end faces have a passage gap between them limit for the transverse wire end part to be bent, can be moved in the axial direction.
  • the end face of the bending template and the supporting surface of the guide block lie opposite the end face of the bending plate and enclose the transverse wire end part to be bent during bending, so that the transverse wire end part can be supported on the one hand on the supporting surface of the guide block and on the other hand on the end face of the bending plate during bending, whereby the cross wire end part is prevented from escaping from the plane of the cross wires.
  • a disadvantage of this bending device is that the bending tool in its starting position can open the feed path for the transverse wire end part bent to the loop, but a non-curved straight transverse wire end part the bending device cannot pass.
  • the transverse wire end parts of a mesh mat can only be bent into loops in one direction.
  • a bending device for bending brackets made of rod-shaped material is known.
  • This bending device has a support frame which can be moved back and forth perpendicular to the material feed direction, on which a rotatable bending plate provided with an eccentric bending mandrel and a backing plate which can be moved back and forth relative to the bending plate and which is arranged but not rotatable almost in the central axis of the bending plate Guide stake for the material to be bent are arranged.
  • the guide post and the bending plate are each on the same side of the material to be bent.
  • This bending device has the disadvantage that a support surface for the wire to be bent is missing on the side opposite the bending plate, so that when bending transverse wire end parts of lattice mats to loops, a deflection of the bent transverse wire end parts from the plane of the transverse wires cannot be prevented .
  • the object of the invention is to provide a machine of the type specified in the introduction, in which the bending template and the bending tool completely release the feed path of the transverse wire end parts of a grid mat, while at the same time adapting to the high working speed of modern steel mesh welding machines, the use of several bending devices for It should be possible to bend several transverse wire end parts in succession in a production line.
  • the cross wire end parts on a grid mat should be able to be bent both in and against the grid feed direction. In all cases it should be ensured that the transverse wire end part cannot move out of the plane of the transverse wires during the bending process.
  • a processing machine that achieves this object has the features that the bending tool of the bending device between a working position for bending of the wire and a rest position can be moved back and forth, in which a passage gap for a wire to be bent is formed between the support surface of the guide block and the bending tool.
  • the bending head has a bending plate which is fixedly connected to a bending shaft which can be set in rotation and carries the bending tool, the bending head being pivotably mounted in a frame by means of a pivoting lever.
  • For gleich ⁇ simultaneous bending to be a lattice mat at least two bending device units with pivotable bending heads, guide blocks and axially displaceable Biege ⁇ template in the longitudinal wire direction one behind the other in selectable spaced, and can 'processing units this Vorrich preferably in each case a welding device and optionally also be a folding device downstream.
  • At least two bending device units with a pivotable bending head, guide block and axially displaceable bending template are provided for alternately bending the cross-wire end parts of a lattice mat, said bending units being displaceable along a slide rail during the bending process, and these device units are preferably a welding device and optionally also a folding device device downstream.
  • FIG. 1 shows a view of a machine tool according to the invention viewed in the transverse wire direction
  • 3 to 5 show application examples, each with two bending devices for the simultaneous bending of transverse wire end parts of lattice mats.
  • a wire mesh to be machined consists of a group of spaced parallel Longitudinal wires L, at least one longitudinal edge wire R per grid mat edge, arranged perpendicular to all longitudinal wires L, R, with these welded transverse wires Q and transverse wire end parts E, each of which protrude beyond the longitudinal edge wire R.
  • a bending device U the transverse wire end parts E are bent back to the respective longitudinal edge wire R in such a way that loops S are formed, the finished bent transverse wire end parts near their free end expediently being followed in a work process following the bending process using one of the bending devices Welding device V to be welded to the respective longitudinal edge wire R.
  • the loops S are then angled out of the plane of the transverse wires with the aid of a folding device W in the direction of the plane of the longitudinal wires. Due to the angled loops, space-saving interlocking of the longitudinal wire or cross wire coulters of adjacent mesh mats is made possible when laying unused mesh mats turned 180 ° about their longitudinal axis onto a stack.
  • the machine according to the invention with bending device U, welding device V and folding device W is expediently connected downstream of the welding machine for producing the grid mats, the grid being pushed in the direction of P. by the feed devices of the grid welding machine in the work cycle.
  • the bending device U shown in FIGS. 1 and 2 has a bending head 1 which is fastened to a pivot lever 2.
  • the pivot lever 2 is pivotally mounted on a support arm 3 of a frame 4 in accordance with the double arrow P ⁇ , the pivoting movement of the lever 2 being effected by a working cylinder 5 supported on the frame 4.
  • the bending head 1 has a bending shaft 6 which can be rotated with the aid of a drive motor 7 about its axis XX in accordance with the double arrow P 3 .
  • a bending plate 8 is fastened to the bending shaft 6, the surface 9 of which facing the grid is designed as a supporting surface for the transverse wire end part to be bent.
  • the bending plate 8 carries an eccentrically arranged bending tool 10.
  • the bending tool 10 consists of a roller which is rotatably mounted on the bending plate 8, as a result of which damage to the wire surface by the bending tool during the bending process as a result of a possible relative movement between the bending tool and the wire is avoided.
  • the bending plate 8 is opposite a guide block 11 arranged on the frame 4, the surface 12 of which faces the grid is designed as a sliding surface for the transverse wires Q and as a supporting surface for the transverse wire end part E to be bent.
  • a guide groove 13 for receiving the longitudinal edge wire R is also incorporated into this surface 12.
  • a bending template 14 is mounted in the guide block 11, the end face of which faces the supporting surface 9 of the bending plate 8 and which is driven by means of a driven piston 15 in accordance with the double arrow P. is displaceable in the axial direction between a rest position and a working position.
  • the bending template 14 is interchangeable and, as shown in FIGS. 3 to 5, has the shape of a dome with a circular segment cross section in the example shown, the radius of the circular segment being adapted to the radius of the loop S to be bent. The chord of the circular segment faces the longitudinal wire R.
  • the central axis YY of the bending template 14 is offset from the axis of rotation XX of the bending plate 8 in the cross-wire direction by an eccentricity measure a (FIG. 2) and in the longitudinal wire direction by an eccentricity measure b (Fip. 1).
  • the dimensions a and b depend on the diameter of the wire to be bent and on the loop radius and are chosen such that a relative movement between the bending tool 10 and the transverse wire end part E is avoided as far as possible during the bending process.
  • the bending template 14 In its rest position, the bending template 14 is fully retracted into the guide block 11, so that the loop S is released and can pass unhindered during the grid advance between the support surface 9 of the bending plate 8 and the end face of the bending template 14.
  • the bending template 14 In its working position, the bending template 14 is extended so far out of the guide block 11 that the end face of the bending template 14 and the support surface 9 of the bending plate 8 at least touch. In order to reliably prevent the cross wire end part E to be bent, the bending template 14 expediently protrudes into a correspondingly shaped recess 16 of the bending plate 8 in its working position.
  • the bending device can be moved on a slide rail 17 in accordance with the double arrow P_ parallel to the grid feed direction P- with the aid of drive means (not shown ) and can be fixed in the respective bending position by means of the clamping plate 18.
  • the welding device v shown in FIG. 1 and following the bending device U in the grid feed direction P has a receiving frame 19 which carries an upper electrode 21 and a lower electrode 22 which can be raised and lowered by means of a welding cylinder 20.
  • the receiving frame 19 is slidably arranged on the slide rail 17 and can be fixed in the respective welding position by means of a clamping plate 23.
  • the folding device W which is connected downstream of the welding device V in the example shown, has a support frame 24 which carries a folding jaw 26 which can be raised and lowered by means of a working cylinder 25 and a counter-holder 27.
  • the support frame 24 is also slidably arranged on the slide rail 17 and can be fixed in the corresponding folding position with the aid of a clamping plate 28.
  • FIG. 3 shows the use of two bending devices according to the invention for preferably simultaneously bending two transverse wire end parts E in the direction against the
  • Grid feed direction P shown schematically.
  • the starting position of the bending tool immediately before the bending process is shown with full lines 10 'and the end position of the bending tool immediately after the bending process is shown in dashed lines with 10 ".
  • the bending movement of the bending tool corresponds to the double arrow P ß .
  • both the bending template 14 In order to enable an unimpeded advancement of a straight transverse wire end part E to the bending device in position B, both the bending template 14 must be moved into its rest position within the guide block in the bending device located in position A, and the bending head must be pivoted so far that the Bending tool 10 'releases the feed path of the transverse wire end part. After the straight transverse wire end part E has passed the bending device in position A, the bending head of this bending device is pivoted back into the working position.
  • the bending tools 10 'of the bending devices in positions A and B projecting into the feed path of the transverse wire end part E serve as stops for the transverse wire end parts moving in the direction P. and determine their position before the bending process.
  • the bending template 14 is extended into its working position and then the bending tool is pivoted from the starting position 10 'into the end position 10 "with the aid of the drive motor, and thus the transverse wire end part E is bent around the bending template 14. After each bending operation the bending template 14 are withdrawn into their rest position in order to release the loop S which has just been bent and to allow the grating to be advanced again.
  • Bending positions A and B for bending the transverse wire end parts both in and against the grid feed direction P .. are shown.
  • the bending device in position A bends the transverse wire end parts in the lattice feed direction
  • the bending device in position B the transverse wire end parts as in FIG. 3 against the grid feed direction.
  • the bending head In order to be able to feed a transverse wire end part E to the bending device in position A, the bending head must be pivoted away.
  • the bending template 14 is in its working position, thereby forming a stop for the advancing transverse wire end part and fixing it in its position before the bending operation.
  • the bending head In order to be able to feed a transverse wire end part E to the bending device in position B, the bending head must be pivoted out of the working position in the bending device in position A and additionally the bending templates of both the bending device in position A and the bending device in position B must be moved into their position respective rest position must be retracted within the guide block.
  • the bending tool 10 'of the bending device in position B is in its working position and forms a stop for the advancing transverse wire end part.
  • the bending tools are moved over the longitudinal edge wire R of the grid during the bending process.
  • 5 shows an application example in which the cross wires of the grid mat are located below the longitudinal wires and therefore the bending tools can only move to the position 10 "'during the bending process directly in front of the longitudinal edge wire R.
  • the diameter of the bending tool must be chosen as small as possible in order to be able to bring it close to the longitudinal edge wire R.
  • the smallest possible diameter of the bending tool is also necessary in the application examples according to FIGS of the grid during the bending process to be able to reach the corresponding end position 10 ".
  • the movements of the loop bending device U, the loop welding device V and the loop bending device ⁇ are controlled via known control elements which are expediently controlled directly by the control device of the grid welding machine in order to fully adapt the working mode of the bending device to the working cycle of the To be able to coordinate mesh welding machine.
  • this loop bending device releases the finished bent loop and then moves back under the action of the drive means into the bending position in order to take over a further cross wire end part there.
  • the second loop bending device moves into its bending position.
  • a transverse wire end part to be bent is taken over by the second loop bending device, preferably at the same time as the finished loop is released by the first loop bending device when the grid welding machine is stopped.
  • either a common loop welding device and a common loop bending device or for each loop bending device a separate loop welding device and a separate loop bending device can be provided for the two loop bending devices.
  • all transverse wire end parts can be bent into loops within a lattice mat either counter to the lattice feed direction P. (FIG. 3) or in the lattice feed direction P .. (FIG. 5). Furthermore, it is possible within the scope of the invention to bend the transverse wire end parts within a grid mat both alternately individually (FIG. 4) and in groups alternately and in the grid feed direction to form loops.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

PCT No. PCT/AT92/00099 Sec. 371 Date Mar. 1, 1993 Sec. 102(e) Date Mar. 1, 1993 PCT Filed Jul. 16, 1992 PCT Pub. No. WO93/01904 PCT Pub. Date Feb. 4, 1993.A machine for processing wire lattice mats made of welded-together longitudinal and cross wires, with a device for bending back cross wire end pieces extending beyond the longitudinal edge wires of the lattice mat to form loops, the bending device (U) having a bending template (14) which is displaceable in the a guide block (11) and a bending tool (10) eccentrically disposed on a bending plate (8) and pivotable around the bending template, the guide block located opposite the bending plate constituting a support surface (12) for the wire to be bent, and where the bending tool can be moved back and forth between a work position for a wire to be bent and a rest position, in which a penetration gap for a wire to be bent is formed between the support surface of the guide block and the bending tool.

Description

Maschine zum Bearbeiten von Gittermatten aus miteinander verschweißten Längs- und Querdrähten Machine for processing lattice mats from longitudinal and transverse wires welded together
Die Erfindung betrifft eine Maschine zum Bearbeiten von Gittermatten aus miteinander verschweißten Längs- und Querdrähten, mit einer Vorrichtung zum Zurückbiegen von über die Randlängsdrähte der Gittermatte überstehenden Querdraht- endteilen zu den Randlängsdrähten in Form von Schlaufen, wobei die Biegevorrichtung eine angenähert kreiszylindri¬ sche, in Richtung ihrer Achse in einem Führungsblock verschiebbare Biegeschablone und ein auf einem Biegeteller exzentrisch angeordnetes, um die Biegeschablone schwenkbares Biegewerkzeug aufweist und der dem Biegeteller gegenüber¬ liegende Führungsblock eine Stützfläche für den zu biegenden Draht bildet, und wobei der Biegevorrichtung vorzugsweise eine Vorrichtung zum Verschweißen der zurückgebogenen Querdrahtendteile mit den Randlängsdrähten und gegebenen- falls auch eine Vorrichtung zum Abkanten der Schlaufen nachgeschaltet sind.The invention relates to a machine for processing lattice mats made of longitudinal and transverse wires welded to one another, with a device for bending back transverse wire end parts protruding beyond the longitudinal edge wires of the lattice mat to the longitudinal edge wires in the form of loops, the bending device being an approximately circular-cylindrical, in Bending template displaceable in the direction of its axis in a guide block and a bending tool arranged eccentrically on a bending plate and pivotable about the bending template and the guide block opposite the bending plate forms a support surface for the wire to be bent, and wherein the bending device preferably a device for welding the bent back Cross wire end pieces with the longitudinal edge wires and, if appropriate, also a device for folding the loops are connected downstream.
Aus der AT-PS 377 713 ist eine Biegevorrichtung be¬ kannt, bei welcher die angenähert kreiszylindrische Biege¬ schablone zwischen einer Arbeitsstellung, in welcher sich die Stirnflächen der Biegeschablone und des Biegetellers berühren, und einer Ruhestellung, in welcher diese beiden Stirnflächen zwischeneinander einen Durchtrittsspalt für den zu biegenden Querdrahtendteil begrenzen, in axialer Richtung verschiebbar ist. Die Stirnfläche der Biegeschablone sowie die Stützfläche des Führungsblockes liegen der Stirnfläche des Biegetellers gegenüber und schließen den zu biegenden Querdrahtendteil beim Biegen ein, so daß sich der Querdraht¬ endteil beim Biegen einerseits auf der Stützfläche des Führungsblockes und anderseits auf der Stirnfläche des Biegetellers abstützen kann, wodurch ein Ausweichen des Querdrahtendteiles aus der Ebene der Querdrähte verhindert wird. Nachteilig ist bei dieser Biegevorrichtung, daß das Biegewerkzeug in seiner Ausgangslage zwar den Vorschubweg für den zur Schlaufe gebogenen Querdrahtendteil freigeben kann, ein nicht gebogener gerader Querdrahtendteil jedoch die Biegevorrichtung nicht passieren kann. Außerdem können mit Hilfe dieser Biegevorrichtung die Querdrahtendteile einer Gittermatte jeweils nur in einer Richtung zu Schlaufen gebogen werden. Aus der DE-C2 25 14 187 ist eine Biegevorrichtung zum Biegen von Bügeln aus stabförmigem Material bekannt. Diese Biegevorrichtung weist ein senkrecht zur Material¬ vorschubrichtung hin- und herbewegbares Traggestell auf, auf dem ein drehbarer, mit einem exzentrischen Biegedorn versehener Biegeteller und ein relativ zum Biegeteller hin- und herbewegbarer, nahezu in der Mittelachse des Biege¬ tellers angeordneter, jedoch nicht drehbarer Führungspflock für das zu biegende Material angeordnet sind. Der Führungs¬ pflock und der Biegeteller befinden sich jeweils auf derselben Seite des zu biegenden Materials. Diese Biegevor¬ richtung hat den Nachteil, daß auf der dem Biegeteller gegenüberliegenden Seite eine Stützfläche für den zu biegenden Draht fehlt, so daß beim Biegen von Querdrahtend¬ teilen von Gittermatten zu Schlaufen ein Ausweichen der gebogenen Querdrahtendteile aus der Ebene der Querdrähte nicht verhindert werden kann.A bending device is known from AT-PS 377 713, in which the approximately circular-cylindrical bending template between a working position in which the end faces of the bending template and the bending plate touch and a rest position in which these two end faces have a passage gap between them limit for the transverse wire end part to be bent, can be moved in the axial direction. The end face of the bending template and the supporting surface of the guide block lie opposite the end face of the bending plate and enclose the transverse wire end part to be bent during bending, so that the transverse wire end part can be supported on the one hand on the supporting surface of the guide block and on the other hand on the end face of the bending plate during bending, whereby the cross wire end part is prevented from escaping from the plane of the cross wires. A disadvantage of this bending device is that the bending tool in its starting position can open the feed path for the transverse wire end part bent to the loop, but a non-curved straight transverse wire end part the bending device cannot pass. In addition, with the aid of this bending device, the transverse wire end parts of a mesh mat can only be bent into loops in one direction. From DE-C2 25 14 187 a bending device for bending brackets made of rod-shaped material is known. This bending device has a support frame which can be moved back and forth perpendicular to the material feed direction, on which a rotatable bending plate provided with an eccentric bending mandrel and a backing plate which can be moved back and forth relative to the bending plate and which is arranged but not rotatable almost in the central axis of the bending plate Guide stake for the material to be bent are arranged. The guide post and the bending plate are each on the same side of the material to be bent. This bending device has the disadvantage that a support surface for the wire to be bent is missing on the side opposite the bending plate, so that when bending transverse wire end parts of lattice mats to loops, a deflection of the bent transverse wire end parts from the plane of the transverse wires cannot be prevented .
Aufgabe der Erfindung ist es, eine Maschine der einleitend angegebenen Art zu schaffen, bei welcher die Biegeschablone und das Biegewerkzeug die Vorschubbahn der Querdrahtendteile einer Gittermatte vollständig freigeben, wobei zugleich zur Anpassung an die hohe Arbeitsge¬ schwindigkeit moderner Baustahlgitter-Schweißmaschinen der Einsatz mehrerer Biegevorrichtungen zum Biegen mehrerer Querdrahtendteile in einer Produktionslinie hintereinander möglich sein soll. Außerdem sollen die Querdrahtendteile an einer Gittermatte sowohl in der als auch entgegen der Gittervorschubrichtung gebogen werden können. In allen Fällen soll gewährleistet sein, daß der Querdrahtendteil während des Biegevorganges nicht aus der Ebene der Quer- dr hte ausweichen kann.The object of the invention is to provide a machine of the type specified in the introduction, in which the bending template and the bending tool completely release the feed path of the transverse wire end parts of a grid mat, while at the same time adapting to the high working speed of modern steel mesh welding machines, the use of several bending devices for It should be possible to bend several transverse wire end parts in succession in a production line. In addition, the cross wire end parts on a grid mat should be able to be bent both in and against the grid feed direction. In all cases it should be ensured that the transverse wire end part cannot move out of the plane of the transverse wires during the bending process.
Eine diese Aufgabe lösende erfindungsgemäße Bearbei¬ tungsmaschine hat die Merkmale, daß das Biegewerkzeug der Biegevorrichtung zwischen einer Arbeitsstellung zum Biegen des Drahtes und einer Ruhestellung hin- und herbewegbar ist, in welcher zwischen der Stützfläche des Führungsblockes und dem Biegewerkzeug ein Durchtrittsspalt für einen zu biegen¬ den Draht gebildet ist. Gemäß einer bevorzugten Ausführungsform der Erfindung weist der Biegekopf einen mit einer in Drehung versetzbaren Biegewelle fest verbundenen, das Biegewerkzeug tragenden Biegeteller auf, wobei der Biegekopf mittels eines Schwenk¬ hebels in einem Gestell schwenkbar gelagert ist. Zur Erhöhung der Produktionsleistung können zum gleich¬ zeitigen Biegen mehrerer Querdrahtendteile einer Gittermatte zumindest zwei Biegevorrichtungseinheiten mit schwenkbarem Biegekopf, Führungsblock und axial verschiebbarer Biege¬ schablone in Längsdrahtrichtung hintereinander in wählbarem Abstand angeordnet sein, und diesen Vorrich'tungseinheiten kann vorzugsweise jeweils eine Schweißvorrichtung und gegebenenfalls auch eine Abkantvorrichtung nachgeschaltet sein.A processing machine according to the invention that achieves this object has the features that the bending tool of the bending device between a working position for bending of the wire and a rest position can be moved back and forth, in which a passage gap for a wire to be bent is formed between the support surface of the guide block and the bending tool. According to a preferred embodiment of the invention, the bending head has a bending plate which is fixedly connected to a bending shaft which can be set in rotation and carries the bending tool, the bending head being pivotably mounted in a frame by means of a pivoting lever. To increase the production capacity of several cross wire end pieces can, for gleich¬ simultaneous bending to be a lattice mat at least two bending device units with pivotable bending heads, guide blocks and axially displaceable Biege¬ template in the longitudinal wire direction one behind the other in selectable spaced, and can 'processing units this Vorrich preferably in each case a welding device and optionally also be a folding device downstream.
Alternativ werden zum abwechselnden Biegen der Quer- drahtendteile einer Gittermatte zumindest zwei Biegevorrich¬ tungseinheiten mit schwenkbarem Biegekopf, Führungsblock und axial verschiebbarer Biegeschablone vorgesehen, die während des Biegevorganges entlang einer Gleitschiene verschiebbar sind, und diesen Vorrichtungseinheiten wird vorzugsweise eine Schweißvorrichtung und gegebenenfalls auch eine Abkant¬ vorrichtung nachgeschaltet.Alternatively, at least two bending device units with a pivotable bending head, guide block and axially displaceable bending template are provided for alternately bending the cross-wire end parts of a lattice mat, said bending units being displaceable along a slide rail during the bending process, and these device units are preferably a welding device and optionally also a folding device device downstream.
Die Erfindung wird nachfolgend unter Bezugnahme auf die Zeichnungen an Hand eines Ausführungsbeispieles genauer beschrieben. Fig. 1 zeigt eine Ansicht einer erfindungsgemäßen Bearbeitungsmaschine in Querdrahtrichtung betrachtet undThe invention is described in more detail below with reference to the drawings using an exemplary embodiment. Fig. 1 shows a view of a machine tool according to the invention viewed in the transverse wire direction and
Fig. 2 eine Ansicht der gleichen Maschine in Längs¬ drahtrichtung betrachtet.2 is a view of the same machine viewed in the longitudinal direction of the wire.
Die Fig. 3 bis 5 zeigen Anwendungsbeispiele mit jeweils zwei Biegevorrichtungen zum gleichzeitigen Biegen von Querdrahtendteilen von Gittermatten.3 to 5 show application examples, each with two bending devices for the simultaneous bending of transverse wire end parts of lattice mats.
Ein zu bearbeitendes Drahtgitter besteht aus einer Schar von mit Abstand parallel zueinander angeordneten Längsdrähten L, zumindest einem Randlängsdraht R je Gitter¬ mattenrand, senkrecht zu allen Längsdrähten L, R angeordne¬ ten, mit diesen verschweißten Querdrähten Q sowie Querdraht¬ endteilen E, die jeweils über den Randlängsdraht R hinaus- ragen. Mit Hilfe einer Biegevorrichtung U werden die Querdrahtendteile E derart zum jeweiligen Randlängsdraht R zurückgebogen, daß Schlaufen S entstehen, wobei die fertig gebogenen Querdrahtendteile nahe ihrem freien Ende zweck¬ mäßig in einem an den Biegevorgang anschließenden Arbeits- Vorgang mit Hilfe einer der Biegevorrichtung nachgeschalte¬ ten Schweißvorrichtung V mit dem jeweiligen Randlängsdraht R verschweißt werden. In einem weiteren Arbeitsgang werden anschließend die Schlaufen S aus der Ebene der Querdrähte mit Hilfe einer Abkantvorrichtung W in Richtung zur Ebene der Längsdrähte abgewinkelt. Durch die abgewinkelten Schlaufen wird beim Ablegen von ungewendeten und um 180° um ihre Längsachse gewendeten Gittermatten auf einen Stapel ein raumsparendes Ineinandergreifen der Längsdraht- bzw. Quer¬ drahtscharen benachbarter Gittermatten ermöglicht. Die erfindungsgemäße Maschine mit Biegevorrichtung U, Schweißvorrichtung V und Abkantvorrichtung W ist zweckmäßig der Schweißmaschine zur Herstellung der Gittermatten nachge- schaltet, wobei das Gitter von den Vorschubeinrichtungen der Gitterschweißmaschine im Arbeitstakt in Richtung P. vorge- schoben wird.A wire mesh to be machined consists of a group of spaced parallel Longitudinal wires L, at least one longitudinal edge wire R per grid mat edge, arranged perpendicular to all longitudinal wires L, R, with these welded transverse wires Q and transverse wire end parts E, each of which protrude beyond the longitudinal edge wire R. With the help of a bending device U, the transverse wire end parts E are bent back to the respective longitudinal edge wire R in such a way that loops S are formed, the finished bent transverse wire end parts near their free end expediently being followed in a work process following the bending process using one of the bending devices Welding device V to be welded to the respective longitudinal edge wire R. In a further operation, the loops S are then angled out of the plane of the transverse wires with the aid of a folding device W in the direction of the plane of the longitudinal wires. Due to the angled loops, space-saving interlocking of the longitudinal wire or cross wire coulters of adjacent mesh mats is made possible when laying unused mesh mats turned 180 ° about their longitudinal axis onto a stack. The machine according to the invention with bending device U, welding device V and folding device W is expediently connected downstream of the welding machine for producing the grid mats, the grid being pushed in the direction of P. by the feed devices of the grid welding machine in the work cycle.
Die in den Fig. 1 und 2 dargestellte Biegevorrichtung U weist einen Biegekopf 1 auf, der an einem Schwenkhebel 2 befestigt ist. Der Schwenkhebel 2 ist entsprechend dem Doppelpfeil P~ schwenkbar an einem Tragarm 3 eines Gestells 4 gelagert, wobei die Schwenkbewegung des Hebels 2 durch einen am Gestell 4 abgestützten Arbeitszylinder 5 erfolgt.The bending device U shown in FIGS. 1 and 2 has a bending head 1 which is fastened to a pivot lever 2. The pivot lever 2 is pivotally mounted on a support arm 3 of a frame 4 in accordance with the double arrow P ~, the pivoting movement of the lever 2 being effected by a working cylinder 5 supported on the frame 4.
Der Biegekopf 1 hat eine Biegewelle 6, die mit Hilfe eines Antriebsmotors 7 um ihre Achse X-X entsprechend dem Doppelpfeil P3 drehbar ist. An der Biegewelle 6 ist ein Biegeteller 8 befestigt, dessen dem Gitter zugekehrte Fläche 9 als Stützfläche für den zu biegenden Querdrahtendteil ausgebildet ist. Der Biegeteller 8 trägt ein exzentrisch angeordnetes Biegewerkzeug 10. Durch die Schwenkbewegung des Biegekopfes 1 entsprechend dem Doppelpfeil P2 wird das Biegewerkzeug 10 aus einer Arbeitsstellung zum Biegen des Querdrahtendteiles E in eine die Vorschubbahn der Querdraht¬ endteile E freigebenden Ruhestellung geschwenkt und umge- kehrt.The bending head 1 has a bending shaft 6 which can be rotated with the aid of a drive motor 7 about its axis XX in accordance with the double arrow P 3 . A bending plate 8 is fastened to the bending shaft 6, the surface 9 of which facing the grid is designed as a supporting surface for the transverse wire end part to be bent. The bending plate 8 carries an eccentrically arranged bending tool 10. By the pivoting movement of the Bending head 1 in accordance with the double arrow P 2 , the bending tool 10 is pivoted from an operating position for bending the transverse wire end part E into a rest position releasing the feed path of the transverse wire end parts E and reversed.
Das Biegewerkzeug 10 besteht beim gezeigten Beispiel aus einer am Biegeteller 8 drehbar gelagerten Rolle, wodurch eine Beschädigung der Drahtoberfläche durch das Biegewerk¬ zeug beim Biegevorgang infolge einer möglichen Relativbewe- gung zwischen Biegewerkzeug und Draht vermieden wird.In the example shown, the bending tool 10 consists of a roller which is rotatably mounted on the bending plate 8, as a result of which damage to the wire surface by the bending tool during the bending process as a result of a possible relative movement between the bending tool and the wire is avoided.
Dem Biegeteller 8 liegt ein am Gestell 4 angeordneter Führungsblock 11 gegenüber, dessen dem Gitter zugekehrte Fläche 12 als Gleitfläche für die Querdrähte Q und als Stützfläche für den zu biegenden Querdrahtendteil E ausge- bildet ist. In diese Fläche 12 ist außerdem eine Führungsnut 13 zur Aufnahme des Randlängsdrahtes R eingearbeitet. Im Führungsblock 11 ist eine Biegeschablone 14 gelagert, deren Stirnfläche der Stützfläche 9 des Biegetellers 8 zugekehrt ist und die mit Hilfe eines angetriebenen Kolbens 15 entsprechend dem Doppelpfeil P . in axialer Richtung zwischen einer Ruhestellung und einer Arbeitsstellung verschiebbar ist. Die Biegeschablone 14 ist auswechselbar und hat, wie die Fig. 3 bis 5 zeigen, beim gezeigten Beispiel die Form eines Domes mit Kreissegmentquerschnitt, wobei der Radius des Kreissegmentes dem Radius der zu biegenden Schlaufe S angepaßt ist. Die Sehne des Kreissegmentes ist dem Rand¬ längsdraht R zugekehrt.The bending plate 8 is opposite a guide block 11 arranged on the frame 4, the surface 12 of which faces the grid is designed as a sliding surface for the transverse wires Q and as a supporting surface for the transverse wire end part E to be bent. A guide groove 13 for receiving the longitudinal edge wire R is also incorporated into this surface 12. A bending template 14 is mounted in the guide block 11, the end face of which faces the supporting surface 9 of the bending plate 8 and which is driven by means of a driven piston 15 in accordance with the double arrow P. is displaceable in the axial direction between a rest position and a working position. The bending template 14 is interchangeable and, as shown in FIGS. 3 to 5, has the shape of a dome with a circular segment cross section in the example shown, the radius of the circular segment being adapted to the radius of the loop S to be bent. The chord of the circular segment faces the longitudinal wire R.
Die zentrale Achse Y-Y der Biegeschablone 14 ist gegenüber der Drehachse X-X des Biegetellers 8 in Querdraht- richtung um ein Exzentrizitätsmaß a (Fig. 2) und in Längsdrahtrichtung um ein Exzentrizitätsmaß b (Fip. 1) versetzt. Die Maße a und b hängen vom Durchmesser des zu biegenden Drahtes sowie vom Schlaufenradius ab und werden derart gewählt, daß während des Biegevorganges eine Relativ- bewegung zwischen Biegewerkzeug 10 und Querdrahtendteil E möglichst vermieden wird. In ihrer Ruhestellung ist die Biegeschablone 14 ganz in den Führungsblock 11 zurückge¬ zogen, so daß nach dem Biegevorgang die Schlaufe S freigegeben wird und während des GittervorSchubes zwischen der Stützfläche 9 des Biegetellers 8 und der Stirnfläche der BiegeSchablone 14 ungehindert hindurchtreten kann. In ihrer Arbeitsstellung ist die Biegeschablone 14 so weit aus dem Führungsblock 11 ausgefahren, daß sich die Stirnfläche der Biegeschablone 14 und die Stützfläche 9 des Biegetellers 8 zumindest berühren. Um ein Ausweichen des zu biegenden Querdrahtendteiles E sicher zu verhindern, ragt die Biege¬ schablone 14 in ihrer Arbeitsstellung zweckmäßig in eine entsprechend geformte Ausnehmung 16 des Biegetellers 8 hinein.The central axis YY of the bending template 14 is offset from the axis of rotation XX of the bending plate 8 in the cross-wire direction by an eccentricity measure a (FIG. 2) and in the longitudinal wire direction by an eccentricity measure b (Fip. 1). The dimensions a and b depend on the diameter of the wire to be bent and on the loop radius and are chosen such that a relative movement between the bending tool 10 and the transverse wire end part E is avoided as far as possible during the bending process. In its rest position, the bending template 14 is fully retracted into the guide block 11, so that the loop S is released and can pass unhindered during the grid advance between the support surface 9 of the bending plate 8 and the end face of the bending template 14. In its working position, the bending template 14 is extended so far out of the guide block 11 that the end face of the bending template 14 and the support surface 9 of the bending plate 8 at least touch. In order to reliably prevent the cross wire end part E to be bent, the bending template 14 expediently protrudes into a correspondingly shaped recess 16 of the bending plate 8 in its working position.
Zur Anpassung an unterschiedliche Querdrahtteilungen des Gitters ist die Biegevorrichtung auf einer Gleitschiene 17 entsprechend dem Doppelpfeil P_ parallel zur Gittervor- schubrichtung P- mit Hilfe nicht dargestel'lter Antriebs¬ mittel verschiebbar und mittels der Klemmplatte 18 in der jeweiligen Biegeposition fixierbar.To adapt to different cross wire divisions of the grid, the bending device can be moved on a slide rail 17 in accordance with the double arrow P_ parallel to the grid feed direction P- with the aid of drive means (not shown ) and can be fixed in the respective bending position by means of the clamping plate 18.
Die in Fig. 1 dargestellte, der Biegevorrichtung U in Gittervorschubrichtung P- nachgeschaltete Schweißvorrichtung v weist einen Aufnahmerahmen 19 auf, der eine mittels eines Schweißzylinders 20 heb- und senkbare Oberelektrode 21 und eine Unterelektrode 22 trägt. Der Aufnahmerahmen 19 ist auf der Gleitschiene 17 verschiebbar angeordnet und mittels einer Klemmplatte 23 in der jeweiligen Schweißposition fixierbar.The welding device v shown in FIG. 1 and following the bending device U in the grid feed direction P has a receiving frame 19 which carries an upper electrode 21 and a lower electrode 22 which can be raised and lowered by means of a welding cylinder 20. The receiving frame 19 is slidably arranged on the slide rail 17 and can be fixed in the respective welding position by means of a clamping plate 23.
Die der Schweißvorrichtung V beim dargestellten Beispiel nachgeschaltete Abkantvorrichtung W weist ein Traggestell 24 auf, das eine mittels eines Arbeitszylinders 25 heb- und senkbare Abkantbacke 26 sowie einen Gegenhalter 27 trägt. Das Traggestell 24 ist ebenfalls auf der Gleitschiene 17 verschiebbar angeordnet und mit Hilfe einer Klemmplatte 28 in der entsprechenden Abkantposition fixier¬ bar.The folding device W, which is connected downstream of the welding device V in the example shown, has a support frame 24 which carries a folding jaw 26 which can be raised and lowered by means of a working cylinder 25 and a counter-holder 27. The support frame 24 is also slidably arranged on the slide rail 17 and can be fixed in the corresponding folding position with the aid of a clamping plate 28.
In Fig. 3 ist die Anwendung zweier erfindungsgemäßer Biegevorrichtungen zum vorzugsweise gleichzeitigen Biegen von je zwei Querdrahtendteilen E in Richtung gegen die3 shows the use of two bending devices according to the invention for preferably simultaneously bending two transverse wire end parts E in the direction against the
Gittervorschubrichtung P. schematisch dargestellt. Hiebei befindet sich je eine Biegevorrichtung in den Positionen A und B, deren gegenseitiger Abstand frei wählbar ist, der beim gezeigten Ausführungsbeispiel einem Vierfachen der Querdrahtendteilung entspricht. Mit 10' ist jeweils mit vollen Linien die Ausgangslage des Biegewerkzeuges unmittel- bar vor dem Biegevorgang und mit 10" in strichlierter Form die Endlage des Biegewerkzeuges unmittelbar nach erfolgtem Biegevorgang dargestellt. Die Biegebewegung des Biegewerk¬ zeuges entspricht dem Doppelpfeil Pß.Grid feed direction P. shown schematically. There is one bending device each in positions A and B, the mutual distance of which can be freely selected and which, in the exemplary embodiment shown, corresponds to four times the transverse wire division. The starting position of the bending tool immediately before the bending process is shown with full lines 10 'and the end position of the bending tool immediately after the bending process is shown in dashed lines with 10 ". The bending movement of the bending tool corresponds to the double arrow P ß .
Um ein ungehindertes Vorschieben eines geraden Quer- drahtendteiles E bis zur Biegevorrichtung in Position B zu ermöglichen, muß bei der in Position A befindlichen Biegevorrichtung sowohl die Biegeschablone 14 in ihre Ruhestellung innerhalb des Führungsblockes eingefahren, als auch der Biegekopf so weit weggeschwenkt werden, daß das Biegewerkzeug 10' die Vorschubbahn des Querdrahtendteiles freigibt. Nachdem der gerade Querdrahtendteil E die in Position A befindliche Biegevorrichtung passiert hat, wird der Biegekopf dieser Biegevorrichtung in die Arbeitsstellung zurückgeschwenkt. Die in die Vorschubbahn des Querdrahtend- teiles E ragenden Biegewerkzeuge 10' der Biegevorrichtungen in den Positionen A und B dienen als Anschläge für die sich in Richtung P., bewegenden Querdrahtendteile und legen ihre Lage vor dem Biegevorgang fest. Zum Biegen der Querdrahtend¬ teile E wird die Biegeschablone 14 in ihre Arbeitsstellung ausgefahren und anschließend wird das Biegewerkzeug mit Hilfe des Antriebsmotors von der Ausgangslage 10' in die Endlage 10" geschwenkt und damit der Querdrahtendteil E um die Biegeschablone 14 gebogen. Nach jedem Biegevorgang muß die Biegeschablone 14 in ihre Ruhestellung zurückgezogen werden, um die soeben gebogene Schlaufe S freizugeben und eine neuerliche Vorschubbewegung des Gitters zu ermöglichen.In order to enable an unimpeded advancement of a straight transverse wire end part E to the bending device in position B, both the bending template 14 must be moved into its rest position within the guide block in the bending device located in position A, and the bending head must be pivoted so far that the Bending tool 10 'releases the feed path of the transverse wire end part. After the straight transverse wire end part E has passed the bending device in position A, the bending head of this bending device is pivoted back into the working position. The bending tools 10 'of the bending devices in positions A and B projecting into the feed path of the transverse wire end part E serve as stops for the transverse wire end parts moving in the direction P. and determine their position before the bending process. To bend the transverse wire end parts E, the bending template 14 is extended into its working position and then the bending tool is pivoted from the starting position 10 'into the end position 10 "with the aid of the drive motor, and thus the transverse wire end part E is bent around the bending template 14. After each bending operation the bending template 14 are withdrawn into their rest position in order to release the loop S which has just been bent and to allow the grating to be advanced again.
In Fig. 4 ist die Anwendung einer erfindungsgemäßen4 is the application of an inventive
Bearbeitungsmaschine mit zwei Biegevorrichtungen in denProcessing machine with two bending devices in the
Biegepositionen A und B zum Biegen der Querdrahtendteile sowohl in als auch entgegen der Gittervorschubrichtung P.. dargestellt. Die Biegevorrichtung .in Position A biegt die Querdrahtendteile in Gittervorschubrichtung, die Biegevor¬ richtung in Position B die Querdrahtendteile wie in Fig. 3 entgegen der Gittervorschubrichtung. Um einen Querdrahtend¬ teil E der Biegevorrichtung in Position A zuführen zu können, muß der Biegekopf weggeschwenkt werden. Die Biege¬ schablone 14 befindet sich in ihrer Arbeitsstellung, bildet dadurch einen Anschlag für den sich vorbewegenden Querdraht¬ endteil und fixiert diesen in ihrer Lage vor dem Biegevor¬ gang. Um einen Querdrahtendteil E der Biegevorrichtung in Position B zuführen zu können, muß bei der Biegevorrichtung in Position A der Biegekopf aus der Arbeitsstellung ge- schwenkt werden und zusätzlich die Biegeschablonen sowohl der Biegevorrichtung in Position A als auch der Biegevor¬ richtung in Position B in ihre jeweilige Ruhestellung innerhalb des Führungsblockes eingefahren sein. Das Biege¬ werkzeug 10' der Biegevorrichtung in Position B ist in seiner Arbeitsstellung und bildet einen Anschlag für den sich vorbewegenden Querdrahtendteil.Bending positions A and B for bending the transverse wire end parts both in and against the grid feed direction P .. are shown. The bending device in position A bends the transverse wire end parts in the lattice feed direction, the bending device in position B the transverse wire end parts as in FIG. 3 against the grid feed direction. In order to be able to feed a transverse wire end part E to the bending device in position A, the bending head must be pivoted away. The bending template 14 is in its working position, thereby forming a stop for the advancing transverse wire end part and fixing it in its position before the bending operation. In order to be able to feed a transverse wire end part E to the bending device in position B, the bending head must be pivoted out of the working position in the bending device in position A and additionally the bending templates of both the bending device in position A and the bending device in position B must be moved into their position respective rest position must be retracted within the guide block. The bending tool 10 'of the bending device in position B is in its working position and forms a stop for the advancing transverse wire end part.
Bei den Biegebewegungen gemäß den Fig. 3 und 4 werden die Biegewerkzeuge beim Biegevorgang über den Randlängsdraht R des Gitters hinwegbewegt. In Fig. 5 ist ein Anwendungsbeispiel gezeigt, bei welchem sich die Querdrähte der Gittermatte unterhalb der Längsdrähte befinden und sich daher die Biegewerkzeuge während des Biegevorganges nur bis zur Position 10"' unmittelbar vor dem Randlängsdraht R bewegen können. Um das Biegewerkzeug in diesem Fall möglichst nahe an den Rand¬ längsdraht R heranführen zu können, muß der Durchmesser des Biegewerkzeuges so klein wie möglich gewählt werden. Ein möglichst kleiner Durchmesser des Biegewerkzeuges ist auch in den Anwendungsbeispielen gemäß den Fig. 3 und 4 not- wendig, um bei einer engen Querdrahtteilung des Gitters beim Biegevorgang die entsprechende Endlage 10" erreichen zu können.3 and 4, the bending tools are moved over the longitudinal edge wire R of the grid during the bending process. 5 shows an application example in which the cross wires of the grid mat are located below the longitudinal wires and therefore the bending tools can only move to the position 10 "'during the bending process directly in front of the longitudinal edge wire R. To the bending tool in this case if possible The diameter of the bending tool must be chosen as small as possible in order to be able to bring it close to the longitudinal edge wire R. The smallest possible diameter of the bending tool is also necessary in the application examples according to FIGS of the grid during the bending process to be able to reach the corresponding end position 10 ".
Die Steuerung der Bewegungen der Schlaufenbiegevorrich- tung U, der Schiaufenschweißvorrichtung V und der Schiaufen- abkantvorrichtung ¥ erfolgt über bekannte Steuerungselemen¬ te, die zweckmäßig unmittelbar von der Steuereinrichtung der Gitterschweißmaschine angesteuert werden, um die Arbeits¬ weise der Biegevorrichtung voll auf den Arbeitstakt der Gitterschweißmaschine abstimmen zu können.The movements of the loop bending device U, the loop welding device V and the loop bending device ¥ are controlled via known control elements which are expediently controlled directly by the control device of the grid welding machine in order to fully adapt the working mode of the bending device to the working cycle of the To be able to coordinate mesh welding machine.
Es versteht sich, daß die Erfindung nicht auf die gezeigten Ausführungsbeispiele beschränkt ist, diese viel¬ mehr im Rahmen des allgemeinen Erfindungsgedankens ver- schiedentlich abgewandelt werden können. Insbesondere kann anstelle der Schwenkbewegung des Biegekopfes eine ent¬ sprechende Parallelverschiebung desselben durchgeführt werden. Im Rahmen der Erfindung ist es weiterhin möglich, den Biegekopf mit Biegewelle und Biegeteller ortsfest zu belassen und lediglich mittels geeigneter Antriebsmittel das Biegewerkzeug relativ zum Biegeteller und senkrecht zur Ebene der Längsdrahtschar zu verschieben, um damit die Vorschubbahn für die Querdrahtendteile freizugeben.It goes without saying that the invention is not restricted to the exemplary embodiments shown, but rather that they can be modified variously within the scope of the general inventive concept. In particular, instead of the pivoting movement of the bending head, a corresponding parallel displacement thereof can be carried out. In the context of the invention, it is also possible to leave the bending head stationary with the bending shaft and bending plate and to move the bending tool relative to the bending plate and perpendicular to the plane of the longitudinal wire coulter only by means of suitable drive means, in order to thereby release the feed path for the transverse wire end parts.
Zum gleichzeitigen Biegen von mehreren Querdrahtend- teilen können mehrere Biegevorrichtungen mit den jeder Biegevorrichtung oder allen Biegevorrichtungen zugeordneten Schlaufenschweißvorrichtung(en) und Schiaufenabkantvorrich- tung(en) in der Produktionslinie hintereinander angeordnet werden, wobei sich die Biegeköpfe, wie in den Fig. 1 und 2 gezeigt, oberhalb der Gittermatte, aber auch um 180° gedreht unterhalb der Gittermatte befinden können.For the simultaneous bending of several transverse wire end pieces, several bending devices with the loop welding device (s) and loop bending device (s) assigned to each bending device or all bending devices can be arranged one behind the other in the production line, the bending heads, as in FIGS. 1 and 2 shown above the grid mat, but also rotated by 180 ° below the grid mat.
Bei Doppelschritt-Gitterschweißmaschinen, die in einem Arbeitstakt gleichzeitig zwei Querdrähte mit den Längsdräh¬ ten verschweißen, werden jeweils zwei Schiaufenbiegevorrich- tungen, Schiaufenschweißvorrichtungen und Schlaufenabkant¬ vorrichtungen je Gittermattenrand hintereinander angeordnet und jeweils gleichzeitig angesteuert.In double-step lattice welding machines, which simultaneously weld two transverse wires to the longitudinal wires in one work cycle, two loop bending devices, loop welding devices and loop bending devices are arranged one behind the other per lattice mat edge and in each case controlled simultaneously.
Bei modernen, sehneHäufenden Einzelschritt-Gitter¬ schweißmaschinen, die in einem Arbeitstakt jeweils nur einen Querdraht mit den Längsdrähten verschweißen, und deren Arbeitstakt kürzer ist als die für das Biegen der Schlaufe erforderliche Zeit, werden ebenfalls zwei Schlaufenbiegevor- richtungen je Gittermattenrand hintereinander angeordnet und arbeiten in folgender Weise: Während die Gitterschweiß- maschine zum Anschweißen eines Querdrahtes anhält, befindet sich eine Schlaufenbiegevorrichtung in ihrer Biegeposition, übernimmt in dieser Position den zu biegenden Querdrahtend¬ teil und beginnt mit dem Biegevorgang. Während des nun folgenden Gittervorschubes fährt die Schlaufenbiegevorrich- tung entlang der Gleitschiene 17 unter der Wirkung nicht dargestellter gesteuerter Antriebsmittel mit dem Gitter mit, und vollendet den Biegevorgang. Beim erneuten Anhalten der Gitterschweißmaschine zum Anschweißen eines weiteren Quer¬ drahtes, gibt diese Schiaufenbiegevorrichtung die fertig gebogene Schlaufe frei und fährt anschließend unter der Wirkung der Antriebsmittel in die Biegeposition zurück, um dort einen weiteren zu biegenden Querdrahtendteil zu übernehmen. Während des Vorschubes der ersten Schiaufen¬ biegevorrichtung fährt die zweite Schlaufenbiegevorrichtung in ihre Biegeposition. Die Übernahme eines zu biegenden Querdrahtendteiles durch die zweite Schlaufen¬ biegevorrichtung erfolgt vorzugsweise gleichzeitig mit der Freigabe der fertig gebogenen Schlaufe durch die erste Schlaufenbiegevorrichtung beim Anhalten der Gitterschweiß- maschine. Bei diesem Anwendungsbeispiel können für die beiden Schlaufenbiegevorrichtungen entweder eine gemeinsame Schlaufenschweißvorrichtung und eine gemeinsame Schlaufenab- kantvorrichtung oder für jede Schlaufenbiegevorrichtung eine eigene Schlaufenschweißvorrichtung und eine eigene Schlaufenabkantvorrichtung vorgesehen sein.In modern, tendon-heaping single-step grid welding machines, which only weld one cross wire to the longitudinal wires in one work cycle and whose work cycle is shorter than the time required for bending the loop, two loop bending devices per grid mat edge are also arranged one behind the other and work in the following way: While the grid welding machine stops for welding a cross wire, a loop bending device is in its bending position, takes over the cross wire end part to be bent in this position and begins the bending process. During the now Following the grid advance, the loop bending device moves along with the grid along the slide rail 17 under the action of controlled drive means, not shown, and completes the bending process. When the lattice welding machine stops again to weld on another cross wire, this loop bending device releases the finished bent loop and then moves back under the action of the drive means into the bending position in order to take over a further cross wire end part there. During the advance of the first loop bending device, the second loop bending device moves into its bending position. A transverse wire end part to be bent is taken over by the second loop bending device, preferably at the same time as the finished loop is released by the first loop bending device when the grid welding machine is stopped. In this application example, either a common loop welding device and a common loop bending device or for each loop bending device a separate loop welding device and a separate loop bending device can be provided for the two loop bending devices.
Mit Hilfe der erfindungsgemäßen Maschine können inner¬ halb einer Gittermatte alle Querdrahtendteile entweder entgegen der Gittervorschubrichtung P. (Fig. 3) oder in Gittervorschubrichtung P.. (Fig. 5) zu -Schlaufen gebogen werden. Ferner ist es im Rahmen der Erfindung möglich, die Querdrahtendteile innerhalb einer Gittermatte sowohl einzeln abwechselnd (Fig. 4) als auch in Gruppen abwechselnd entgegen und in Gittervorschubrichtung zu Schlaufen zu biegen. With the aid of the machine according to the invention, all transverse wire end parts can be bent into loops within a lattice mat either counter to the lattice feed direction P. (FIG. 3) or in the lattice feed direction P .. (FIG. 5). Furthermore, it is possible within the scope of the invention to bend the transverse wire end parts within a grid mat both alternately individually (FIG. 4) and in groups alternately and in the grid feed direction to form loops.

Claims

Patentansprüche: Claims:
1. Maschine zum Bearbeiten von Gittermatten aus miteinander verschweißten Längs- und Querdrähten, mit einer Vorrichtung zum Zurückbiegen von über die Randlängsdrähte der Gittermatte überstehenden Querdrahtendteilen zu den Randlängsdrähten in Form von Schlaufen, wobei die Biegevor¬ richtung eine angenähert kreiszylindrische, in Richtung ihrer Achse in einem Führungsblock verschiebbare Biege¬ schablone und ein auf einem Biegeteller exzentrisch angeord¬ netes, um die Biegeschablone schwenkbares Biegewerkzeug aufweist und der dem Biegeteller gegenüberliegende Führungs¬ block eine Stützfläche für den zu biegenden Draht bildet, und wobei der Biegevorrichtung vorzugsweise eine Vorrichtung zum Verschweißen der zurückgebogenen Querdrahtendteile mit den Randlängsdrähten und gegebenenfalls auch eine Vorrich- tung zum Abkanten der Schlaufen nachgeschaltet sind, dadurch gekennzeichnet, daß das Biegewerkzeug (10) zwischen einer Arbeitsstellung zum Biegen des Drahtes und einer Ruhe¬ stellung hin- und herbewegbar ist, in welcher zwischen der Stützfläche (12) des Führungsblockes (11) und dem Biegewerk- zeug (10) ein Durchtrittsspalt für einen zu biegenden Draht gebildet ist.1. Machine for processing lattice mats made of longitudinal and transverse wires welded to one another, with a device for bending back transverse wire end parts protruding beyond the longitudinal longitudinal wires of the lattice mat to the longitudinal longitudinal wires in the form of loops, the bending device being approximately circular-cylindrical in the direction of its axis in a bending block which can be displaced by a guide block and a bending tool which is arranged eccentrically on a bending plate and which can be pivoted about the bending template and the guide block opposite the bending plate forms a support surface for the wire to be bent, and the bending device preferably a device for welding the bent back parts Cross wire end parts with the longitudinal edge wires and optionally also a device for folding the loops are connected, characterized in that the bending tool (10) between a working position for bending the wire and a he rest position can be moved back and forth, in which a passage gap for a wire to be bent is formed between the support surface (12) of the guide block (11) and the bending tool (10).
2. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß der Biegekopf (1) einen mit einer in Drehung versetz¬ baren Biegewelle (6) fest verbundenen, das Biegewerkzeug (10) tragenden Biegeteller (8) aufweist, wobei der Biegekopf (1) mittels eines Schwenkhebels (2) in einem Gestell (4) schwenkbar gelagert ist.2. Machine according to Claim 1, characterized in that the bending head (1) has a bending plate (8) which is fixedly connected to a bending shaft (6) which can be rotated, the bending tool (10) carrying the bending head (1) by means of a pivot lever (2) is pivotally mounted in a frame (4).
3. Maschine nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß zum gleichzeitigen Biegen mehrerer Querdrahtendteile einer Gittermatte zumindest zwei Biegevor- richtungseinheiten (U) mit schwenkbarem Biegekopf (1), Führungsblock (11) und axial verschiebbarer Biegeschablone (14) in Längsdrahtrichtung hintereinander in wählbarem Abstand angeordnet sind, und daß diesen Vorrichtungsein- heiten (U) vorzugsweise jeweils eine Schweißvorrichtung (V) und gegebenenfalls auch jeweils eine Abkantvorrichtung (W) nachgeschaltet ist.3. Machine according to one of claims 1 or 2, characterized in that for the simultaneous bending of several transverse wire end parts of a grid mat at least two bending device units (U) with pivotable bending head (1), guide block (11) and axially displaceable bending template (14) in the longitudinal wire direction are arranged one behind the other at a selectable distance, and that these device units (U) preferably each have a welding device (V) and, if appropriate, also a folding device (W) is connected downstream.
4. Maschine nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß zum abwechselnden Biegen der Querdraht¬ endteile einer Gittermatte zumindest zwei Biegevorrichtungs- einheiten (U) mit schwenkbarem Biegekopf (1), Führungsblock (11) und axial verschiebbarer Biegeschablone (14) vorgesehen sind, die während des Biegevorganges entlang einer Gleit¬ schiene (17) verschiebbar sind, und daß diesen Vorrichtungs¬ einheiten vorzugsweise eine Schweißvorrichtung (V) und gegebenenfalls auch eine Abkantvorrichtung (W) nachge¬ schaltet ist. 4. Machine according to one of claims 1 or 2, characterized in that for alternately bending the Querdraht¬ end parts of a grid mat at least two bending device units (U) with pivotable bending head (1), guide block (11) and axially displaceable bending template (14) are provided, which can be moved along a slide rail (17) during the bending process, and that these device units are preferably followed by a welding device (V) and optionally also a folding device (W).
EP92914885A 1991-07-17 1992-07-16 Machine for making latticework mats consisting of welded longitudinal and transverse wires Expired - Lifetime EP0549761B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0143891A AT402032B (en) 1991-07-17 1991-07-17 MACHINE FOR THE PROCESSING OF GRID MATS FROM LENGTHED AND CROSSWIRE WELDED TOGETHER
AT1438/91 1991-07-17
PCT/AT1992/000099 WO1993001904A1 (en) 1991-07-17 1992-07-16 Machine for making latticework mats consisting of welded longitudinal and transverse wires

Publications (2)

Publication Number Publication Date
EP0549761A1 true EP0549761A1 (en) 1993-07-07
EP0549761B1 EP0549761B1 (en) 1996-02-28

Family

ID=3513897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92914885A Expired - Lifetime EP0549761B1 (en) 1991-07-17 1992-07-16 Machine for making latticework mats consisting of welded longitudinal and transverse wires

Country Status (7)

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US (1) US5316052A (en)
EP (1) EP0549761B1 (en)
JP (1) JPH0576974A (en)
AT (2) AT402032B (en)
DE (1) DE59205493D1 (en)
GR (2) GR930300093T1 (en)
WO (1) WO1993001904A1 (en)

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GR1003857B (en) 2001-02-22 2002-04-05 Method and machine for the production of reinforcement and dowel side frames for concrete reinforcement from wire or rod or other material of prismatic cross section
PL1651789T3 (en) * 2003-07-29 2011-03-31 Voestalpine Stahl Gmbh Method for producing hardened parts from sheet steel
US20070095006A1 (en) * 2005-11-01 2007-05-03 Konersmann Ronald D Lightweight portable concrete enclosure and associated method of construction
ATE450327T1 (en) * 2007-04-02 2009-12-15 Ruwa Drahtschweisswerk Ag METHOD AND DEVICE FOR PRODUCING A REINFORCEMENT CAGE FROM A STRUCTURAL STEEL MAT
KR20100037148A (en) * 2007-07-18 2010-04-08 바스프 에스이 Laser-sensitive coating formulation
JP4785897B2 (en) * 2008-08-14 2011-10-05 メークス株式会社 Unit rebar manufacturing equipment
GR1007955B (en) 2011-12-22 2013-08-19 Αντωνιος Παναγιωτη Αναγνωστοπουλος Method and system for the production of reinforcement dowel bearers
AT512400B1 (en) * 2012-07-25 2013-08-15 Evg Entwicklung Verwert Ges Bending machine for wire mesh mats
CN105458453B (en) * 2016-02-22 2018-05-11 德州晶达节能技术有限公司 Network frame plate welder
AT523405B1 (en) * 2020-03-03 2021-08-15 Progress Maschinen & Automation Ag Bending head for welded wire mesh

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Title
See references of WO9301904A1 *

Also Published As

Publication number Publication date
EP0549761B1 (en) 1996-02-28
US5316052A (en) 1994-05-31
JPH0576974A (en) 1993-03-30
DE59205493D1 (en) 1996-04-04
GR930300093T1 (en) 1993-09-30
AT402032B (en) 1997-01-27
ATA143891A (en) 1996-06-15
ATE134541T1 (en) 1996-03-15
WO1993001904A1 (en) 1993-02-04
GR3019675T3 (en) 1996-07-31

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