EP1977841A1 - Method and device for manufacturing a reinforcement cage made of a reinforced steel mesh - Google Patents

Method and device for manufacturing a reinforcement cage made of a reinforced steel mesh Download PDF

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Publication number
EP1977841A1
EP1977841A1 EP07405105A EP07405105A EP1977841A1 EP 1977841 A1 EP1977841 A1 EP 1977841A1 EP 07405105 A EP07405105 A EP 07405105A EP 07405105 A EP07405105 A EP 07405105A EP 1977841 A1 EP1977841 A1 EP 1977841A1
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EP
European Patent Office
Prior art keywords
bending
mandrel
cams
parallel
bars
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Granted
Application number
EP07405105A
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German (de)
French (fr)
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EP1977841B1 (en
Inventor
Manfred Loosli
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RUWA-DRAHTSCHWEISSWERK AG
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RUWA-DRAHTSCHWEISSWERK AG
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Priority to EP07405105A priority Critical patent/EP1977841B1/en
Priority to AT07405105T priority patent/ATE450327T1/en
Priority to DE502007002177T priority patent/DE502007002177D1/en
Publication of EP1977841A1 publication Critical patent/EP1977841A1/en
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    • 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
    • B21F27/121—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars
    • B21F27/127—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars by bending preformed mesh

Definitions

  • the invention relates to a method for producing a reinforcing cage from a structural steel mat according to the preamble of claim 1 and an apparatus for carrying out this method according to the preamble of claim 4.
  • the structural steel mat includes a group of mutually parallel first bars and a group of these in a plane orthogonal crossing second bars, which are connected at the crossing points fixed to the first bars.
  • the reinforcing cage mat is bent around a bending mandrel parallel to the second bars so that the first bars wrap around it in a bending area.
  • An apparatus for carrying out this method is known, for example, from the patent publication DE 4140421 A1 known.
  • An object of the invention is to reduce this obstruction of the bending process by colliding portions of the same bars of the structural steel mat.
  • FIG. 1 - 3 show a bending device and a reinforcing steel mat lying thereon in views from the side (FIG. Fig. 1 ), from above ( Fig. 2 ) and from the front ( Fig. 3 ).
  • the structural steel mat consists of a group of mutually parallel, first bars, hereinafter referred to as longitudinal bars 1, and a group of these in a plane orthogonal crossing second bars, hereinafter referred to as cross bars 2.
  • longitudinal bars 1 and Cross bars 2 are particularly in the view from above ( Fig. 2 ) clearly visible. They are usually connected together at the crossing points by welding connections.
  • the bending device has a horizontal bending mandrel which is formed by a plurality of mutually aligned bending cams 3, so that a common bending axis common center axis of the central axis 4 of the bending mandrel corresponds, and a fixed beam 5, which is arranged parallel to the central axis 4 of the bending mandrel below this.
  • a support table 6 Laterally next to the fixed beam 5 is a support table 6, the table surface is used together with the top of the fixed bar 5 as a support surface for the reinforcing mat.
  • the bending cams each have a fixed end 7 and a free end 8.
  • bending beam 10 On the side opposite the support table 5 side of the fixed bar 4 a to the mandrel 4 parallel and opposite this pivotally mounted bending beam 10 is provided.
  • bending beam 10 3 On the bending beam 10 3 radially spaced bending rollers 11 are fixed by the bending cams, which are rotatably mounted about an axis parallel to the bending mandrel 4 and which are movable by pivoting the bending beam 10 from a position lying below the support plane of the fixed beam to the bending cams.
  • the bending beam is pivotable about a rotation axis on the fixed beams 5 hinged, so that the bending rollers 11 are movable by pivoting the bending beam 10 along a circular path of movement 12.
  • the rollers are preferably cylindrical.
  • the Fig. 4 and 5 show the bending device with the reinforcing steel mat, which has already been bent in two places around the mandrel before or while this is bent to make a reinforcement cage a third and final times.
  • Fig. 4 shows the bending device in the same state as Fig. 1 ,
  • the reinforcing steel mat was previously bent back on itself in an edge region around the bending mandrel parallel to their transverse bars, whereby end portions of the longitudinal bars were formed into end hooks 13.
  • These end hooks 13 each have a hook bow 14 and a subsequent thereto, straight extension 15th
  • Fig. 5 shows the arrangement of Fig. 4 during the last bending process to make the reinforcement cage.
  • the bending beam 10 is pivoted relative to the fixed beam 5 and the longitudinal bars 1 are thereby pulled by the bending rollers 11 by a respective bending cam 3.
  • a bending region of the reinforcing steel mat wraps around the bending cams 3 or the bending mandrel formed by them.
  • the reinforcing steel mat becomes like that bent so that the hook bow 14 of the end hooks 13 reach another intersection 15 of the same longitudinal bars 1 to the intersection.
  • the dashed lines show the position of the end hooks 13 at maximum bending. If the bending beam 10 is moved back to its initial position, then the bend springs back slightly and the end hooks 13 assume the position drawn by a solid line.
  • the sections of the longitudinal bars 1 adjoining the bending area must be brought to the intersection in order to form a completely or approximately closed reinforcing cage.
  • the crossing of the rod sections 14, 16 is observed from the central axis 4 of the bending mandrel parallel view angle or, in other words, in a producible by the central axis 4 of the bending mandrel parallel projection of the rod sections 14, 16 can be generated illustration of the same.
  • a reinforcement cage is closed when its longitudinal bars 1 in this figure form closed loops.
  • the reinforcing steel mat is preferably bent in such a way that these sections do not meet flat but only at one point.
  • the end hooks are bent at a bending angle of over 180 degrees.
  • the bar sections adjoining the hook bow preferably run together at an acute angle ⁇ of at least 5 degrees (see FIG Fig. 4 ).
  • sections 13, 15 of the longitudinal bars 1 are not possible if they collide head-on.
  • the longitudinal bars are helically bent around the bending mandrel or around the respective bending cam 3, so that the sections of the longitudinal bars 1 adjoining the bending area of the reinforcing mat surrounding the latter do not lie in a common plane. These do not meet each other head-on but at most with lateral offset, so that they repel each other due to their circular cross-section and can pass each other laterally.
  • Fig. 6 shows an enlarged section of Fig. 5 in the view from the front, wherein the bending beam is not shown in this figure and of the bending rollers 11 only the Kontor is indicated by a dash-dotted line.
  • the bending radius determining bending surface 18 of the bending cams 3 has at its on the holding elements 9 connected to the fixed beam 5, fixed end 7 has a greater radius than at its free end 8 and it is to the center axis of the bending cam and the coincident center axis 4 of the mandrel inclined.
  • the bending surface acts as a guide surface 17, which guides the longitudinal bar adjacent thereto during bending parallel to the central axis 4 of the bending mandrel in one direction, thus resulting in a helical bend.
  • the longitudinal bars 1 are urged by the guide surfaces 17 to the thinner ends of the bending cams 3 while being pulled by the rollers around the bending cams 3.
  • the bending cams have a cone-shaped bending surface 18 with a cone angle ⁇ of preferably at least 2 degrees.
  • the bending cams instead of the cone-shaped bending surface 17, the bending cams have a groove which runs helically around its circumference, one flank of this groove serving as a guide surface inclined to the central axis of the bending mandrel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Coating With Molten Metal (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

Production of a reinforcing cage made from welded wire mesh comprises bending first rods around a bending cam (3) in a screw-like manner and crossing sections of the rod on the bending region with each other after bending the wire mesh. An independent claim is also included for a device for carrying out the above process. Preferred Features: The welded wire mesh is bent back on itself around a bending block (4) parallel to second rods (2) so that the end parts of the first rods form end hooks.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Bewehrungskorbs aus einer Baustahlmatte gemäss dem Oberbegriff von Anspruch 1 und eine Vorrichtung zur Durchführung dieses Verfahrens gemäss dem Oberbegriff von Anspruch 4.The invention relates to a method for producing a reinforcing cage from a structural steel mat according to the preamble of claim 1 and an apparatus for carrying out this method according to the preamble of claim 4.

Die Baustahlmatte beinhaltet eine Gruppe von zueinander parallelen ersten Stäben und eine Gruppe von diese in einer Ebene orthogonal kreuzenden zweiten Stäben, die an den Kreuzungspunkten fest mit den ersten Stäben verbunden sind. Zur Herstellung des Bewehrungskorbs wird die Baustahlmatte um einen zu den zweiten Stäben parallelen Biegedorn gebogen, so dass die ersten Stäbe diesen in einem Biegebereich umschlingen. Eine Vorrichtung zur Durchführung dieses Verfahrens ist zum Beispiel aus der Patentpublikation DE 4140421 A1 bekannt.The structural steel mat includes a group of mutually parallel first bars and a group of these in a plane orthogonal crossing second bars, which are connected at the crossing points fixed to the first bars. To produce the reinforcing cage, the reinforcing cage mat is bent around a bending mandrel parallel to the second bars so that the first bars wrap around it in a bending area. An apparatus for carrying out this method is known, for example, from the patent publication DE 4140421 A1 known.

Soll aus einer Baustahlmatte durch dieses Biegen ein geschlossener Korb geformt werden, so dass die ersten Stäbe geschlossene Schlaufen bilden, so stossen beim Biegen die beidseits an den Biegebereich anschliessenden Abschnitte der ersten Stäbe zusammen und das Biegen wird dadurch behindert.If a closed basket is to be formed from a structural steel mat by this bending, so that the first bars form closed loops, the sections of the first bars adjoining the bending area on both sides collide during bending and the bending is hindered as a result.

Eine Aufgabe der Erfindung ist es, diese Behinderung des Biegevorgangs durch zusammenstossende Abschnitte derselben Stäbe der Baustahlmatte zu vermindern.An object of the invention is to reduce this obstruction of the bending process by colliding portions of the same bars of the structural steel mat.

Diese Aufgabe wird durch das Verfahren nach Anspruch 1 gelöst und eine zur Durchführung dieses Verfahrens geeignete Vorrichtung weist die Merkmale von Anspruch 4 auf.This object is achieved by the method according to claim 1 and a device suitable for carrying out this method has the features of claim 4.

Bevorzugte Ausführungsformen sind in den abhängigen Ansprüchen angegeben.Preferred embodiments are given in the dependent claims.

Unter Bezugnahme auf die Figuren wird im Folgenden die Durchführung des Verfahrens und ein Beispiel für eine dazu geeignete Vorrichtung näher beschrieben. Es zeigen:

Fig. 1
eine Vorrichtung zum Biegen einer Baustahlmatte und eine darauf liegende Baustahlmatte in Seitenansicht;
Fig. 2
die Anordnung gemäss Fig. 1 in der Ansicht von oben;
Fig. 3
die Anordnung gemäss Fig. 1 in Ansicht von vorne;
Fig. 4
die Anordnung gemäss Fig. 1 vor dem Schliessen des Bewehrungskorbs;
Fig. 5
die Anordnung gemäss Fig. 1 beim Schliessen des Bewehrungskorbs;
Fig. 6
in Vorderansicht (in der Ansicht gemäss Fig. 3) ein Detail der Anordnung gemäss Fig. 5.
With reference to the figures, the implementation of the method and an example of a device suitable for this purpose will be described in more detail below. Show it:
Fig. 1
a device for bending a structural steel mat and a reinforcing steel mat lying thereon in side view;
Fig. 2
the arrangement according to Fig. 1 in the view from above;
Fig. 3
the arrangement according to Fig. 1 in front view;
Fig. 4
the arrangement according to Fig. 1 before closing the reinforcement cage;
Fig. 5
the arrangement according to Fig. 1 when closing the reinforcement cage;
Fig. 6
in front view (in the view according to Fig. 3 ) a detail of the arrangement according to Fig. 5 ,

Die Figuren 1 - 3 zeigen eine Biegevorrichtung und eine auf dieser liegende Baustahlmatte in Ansichten von der Seite (Fig. 1), von oben (Fig. 2) und von vorne (Fig. 3).The Figures 1 - 3 show a bending device and a reinforcing steel mat lying thereon in views from the side (FIG. Fig. 1 ), from above ( Fig. 2 ) and from the front ( Fig. 3 ).

Die Baustahlmatte besteht aus einer Gruppe von zueinander parallelen, ersten Stäben, die nachstehend als Längsstäbe 1 bezeichnet werden, und einer Gruppe von diese in einer Ebene orthogonal kreuzenden zweiten Stäben, die nachstehend als Querstäbe 2 bezeichnet werden. Diese Längsstäbe 1 und Querstäbe 2 sind insbesondere in der Ansicht von oben (Fig. 2) deutlich zu erkennen. Sie sind an den Kreuzungspunkten üblicherweise durch Schweissverbindungen fest miteinander verbunden.The structural steel mat consists of a group of mutually parallel, first bars, hereinafter referred to as longitudinal bars 1, and a group of these in a plane orthogonal crossing second bars, hereinafter referred to as cross bars 2. These longitudinal bars 1 and Cross bars 2 are particularly in the view from above ( Fig. 2 ) clearly visible. They are usually connected together at the crossing points by welding connections.

Die Biegevorrichtung hat einen horizontalen Biegedorn, der durch mehrere miteinander fluchtend angeordnete Biegenocken 3 gebildet wird, so dass eine allen Biegenocken gemeinsame Mittelachse der Mittelachse 4 des Biegedorns entspricht, und einen Festbalken 5, der parallel zur Mittelachse 4 des Biegedorns unter diesem angeordnet ist. Seitlich neben dem Festbalken 5 steht ein Auflagetisch 6, dessen Tischfläche zusammen mit der Oberseite des Festbalkens 5 als Auflagefläche für die Baustahlmatte dient. Die Biegenocken haben je ein festes Ende 7 und ein freies Ende 8. Am festen Ende 7 sind sie jeweils über einen Halter 9 mit dem Festbalken 5 verbunden und die freien Enden sind alle auf dieselbe Seite gerichtet, so dass die Längsstäbe 1 der über dem Festbalken 5 liegenden Baustahlmatte von dieser Seite unter je einen Biegenocken 3 schiebbar sind. Die Abstände zwischen den Biegenocken 3 sind dazu den Abständen zwischen den Längsstäben 1 angepasst.The bending device has a horizontal bending mandrel which is formed by a plurality of mutually aligned bending cams 3, so that a common bending axis common center axis of the central axis 4 of the bending mandrel corresponds, and a fixed beam 5, which is arranged parallel to the central axis 4 of the bending mandrel below this. Laterally next to the fixed beam 5 is a support table 6, the table surface is used together with the top of the fixed bar 5 as a support surface for the reinforcing mat. The bending cams each have a fixed end 7 and a free end 8. At the fixed end 7, they are each connected via a holder 9 with the fixed beam 5 and the free ends are all directed to the same side, so that the longitudinal bars 1 of the above the fixed beam 5 lying Baustahlmatte from this page under a respective bending cam 3 are slidable. The distances between the bending cams 3 are adapted to the distances between the longitudinal bars 1.

Auf der dem Auflagetisch 5 gegenüberliegenden Seite des Festbalkens 4 ist ein zum Biegedorn 4 paralleler und gegenüber diesem schwenkbar gelagerter Biegebalken 10 vorgesehen. Am Biegebalken 10 sind von den Biegenocken 3 radial beabstandete Biegerollen 11 befestigt, die um eine zum Biegedorn 4 parallele Achse drehbar gelagert sind und die durch Schwenken des Biegebalkens 10 aus einer unterhalb der Auflageebene des Festbalkens liegenden Stellung um die Biegenocken bewegbar sind. In diesem Beispiel ist der Biegebalken um eine Drehachse schwenkbar an den Festbalken 5 angelenkt, so dass die Biegerollen 11 durch Schwenken des Biegebalkens 10 entlang einer kreisförmigen Bewegungsbahn 12 bewegbar sind. Die Rollen sind vorzugsweise zylindrisch.On the side opposite the support table 5 side of the fixed bar 4 a to the mandrel 4 parallel and opposite this pivotally mounted bending beam 10 is provided. On the bending beam 10 3 radially spaced bending rollers 11 are fixed by the bending cams, which are rotatably mounted about an axis parallel to the bending mandrel 4 and which are movable by pivoting the bending beam 10 from a position lying below the support plane of the fixed beam to the bending cams. In this example, the bending beam is pivotable about a rotation axis on the fixed beams 5 hinged, so that the bending rollers 11 are movable by pivoting the bending beam 10 along a circular path of movement 12. The rollers are preferably cylindrical.

Zum Biegen der Baustahlmatte wird diese mit zum Biegedorn 4 parallelen Querstäben 2 auf den Festbalken 5 gelegt und mit ihren Längsstäben 1 unter je einen Biegenocken 3 geschoben. Die Längsstäbe 1 schneiden die Bewegungsbahn 12 der Biegerollen 11 und werden von diesen um die jeweiligen Biegenocken 3 gezogen wenn der Biegebalken 10 geschwenkt wird.To bend the reinforcing steel mat this is placed with the bending mandrel 4 parallel transverse bars 2 on the fixed beam 5 and pushed with their longitudinal bars 1 under a respective bending cam 3. The longitudinal bars 1 intersect the trajectory 12 of the bending rollers 11 and are pulled by these around the respective bending cam 3 when the bending beam 10 is pivoted.

Die Fig. 4 und 5 zeigen die Biegevorrichtung mit der Baustahlmatte, die bereits an zwei Stellen um den Biegedorn gebogen wurde, bevor bzw. während diese zur Herstellung eines Bewehrungskorbs ein drittes und letztes mal gebogen wird.The Fig. 4 and 5 show the bending device with the reinforcing steel mat, which has already been bent in two places around the mandrel before or while this is bent to make a reinforcement cage a third and final times.

Fig. 4 zeigt die Biegevorrichtung in demselben Zustand wie Fig. 1. Die Baustahlmatte wurde vorgängig bereits in einem Randbereich um den zu ihren Querstäben parallelen Biegedorn auf sich selbst zurückgebogen, wodurch Endpartien der Längsstäbe zu Endhaken 13 geformt wurden. Diese Endhaken 13 haben je einen Hakenbogen 14 und einen an diesen anschliessenden, geraden Fortsatz 15. Fig. 4 shows the bending device in the same state as Fig. 1 , The reinforcing steel mat was previously bent back on itself in an edge region around the bending mandrel parallel to their transverse bars, whereby end portions of the longitudinal bars were formed into end hooks 13. These end hooks 13 each have a hook bow 14 and a subsequent thereto, straight extension 15th

Fig. 5 zeigt die Anordnung von Fig. 4 während dem letzten Biegevorgang zur Herstellung des Bewehrungskorbs. Der Biegebalken 10 wird gegenüber dem Festbalken 5 geschwenkt und die Längsstäbe 1 werden dabei von den Biegerollen 11 um je einen Biegenocken 3 gezogen. Ein Biegebereich der Baustahlmatte umschlingt dabei die Biegenocken 3 bzw. den durch diese gebildeten Biegedorn. Die Baustahlmatte wird so weit gebogen, dass die Hakenbogen 14 der Endhaken 13 mit einem anderen Abschnitt 15 derselben Längsstäbe 1 zur Kreuzung gelangen. Die gestrichelten Linien zeigen die Position der Endhaken 13 bei maximaler Biegung. Wird der Biegebalken 10 in seine Ausgangsstellung zurückgefahren, so federt die Biegung etwas zurück und die Endhaken 13 nehmen die mit durchgezogener Linie gezeichnete Stellung ein. Fig. 5 shows the arrangement of Fig. 4 during the last bending process to make the reinforcement cage. The bending beam 10 is pivoted relative to the fixed beam 5 and the longitudinal bars 1 are thereby pulled by the bending rollers 11 by a respective bending cam 3. A bending region of the reinforcing steel mat wraps around the bending cams 3 or the bending mandrel formed by them. The reinforcing steel mat becomes like that bent so that the hook bow 14 of the end hooks 13 reach another intersection 15 of the same longitudinal bars 1 to the intersection. The dashed lines show the position of the end hooks 13 at maximum bending. If the bending beam 10 is moved back to its initial position, then the bend springs back slightly and the end hooks 13 assume the position drawn by a solid line.

Aufgrund dieses Zurückfederns der Baustahlmatte nach dem Biegen müssen während der letzten Biegung die an den Biegebereich anschliessenden Abschnitte der Längsstäbe 1 zur Kreuzung gebracht werden um einen ganz oder annähernd geschlossenen Bewehrungskorb zu formen. Das Kreuzen der Stababschnitte 14, 16 wird aus zur Mittelachse 4 des Biegedorns parallelem Blickwinkel oder, anders gesagt, in einer durch zur Mittelachse 4 des Biegedorns parallele Projektion der Stababschnitte 14, 16 erzeugbaren Abbildung derselben beobachtet. Ein Bewehrungskorb ist geschlossen wenn seine Längsstäbe 1 in dieser Abbildung geschlossene Schlaufen bilden.Due to this spring-back of the reinforcing steel mat after bending, during the last bending, the sections of the longitudinal bars 1 adjoining the bending area must be brought to the intersection in order to form a completely or approximately closed reinforcing cage. The crossing of the rod sections 14, 16 is observed from the central axis 4 of the bending mandrel parallel view angle or, in other words, in a producible by the central axis 4 of the bending mandrel parallel projection of the rod sections 14, 16 can be generated illustration of the same. A reinforcement cage is closed when its longitudinal bars 1 in this figure form closed loops.

Um das Kreuzen von Abschnitten 14, 16 derselben Längsstäbe zu erleichtern wird die Baustahlmatte bevorzugt so gebogen, dass diese Abschnitte nicht flächig sondern lediglich in einem Punkt zusammentreffen. In einer bevorzugten Ausführungsform werden die Endhaken mit einem Biegewinkel von über 180 Grad gebogen. Die an den Hakenbogen anschliessenden Stababschnitte laufen vorzugsweise unter einem spitzen Winkel α von mindestens 5 Grad zusammenlaufen (siehe Fig. 4). Mittels einer zweiten Biegung der Baustahlmatte um denselben Biegedorn werden die Hakenbogen 14 sodann mit einem anderen Abschnitt 16 des jeweiligen Längsstabs 1 zur Kreuzung gebracht.In order to facilitate the crossing of sections 14, 16 of the same longitudinal bars, the reinforcing steel mat is preferably bent in such a way that these sections do not meet flat but only at one point. In a preferred embodiment, the end hooks are bent at a bending angle of over 180 degrees. The bar sections adjoining the hook bow preferably run together at an acute angle α of at least 5 degrees (see FIG Fig. 4 ). By means of a second bend of the reinforcing steel mat around the same bending mandrel, the hooked sheets 14 are then brought to the intersection with another section 16 of the respective longitudinal bar 1.

Das Kreuzen von Abschnitten 13, 15 der Längsstäbe 1 ist nicht möglich wenn diese frontal zusammenstossen. Um dies zu vermeiden werden die Längsstäbe schraubenförmig um den Biegedorn bzw. um den jeweiligen Biegenocken 3 gebogen, so dass die an den diesen umschlingenden Biegebereich der Baustahlmatte anschliessenden Abschnitte der Längsstäbe 1 nicht in einer gemeinsamen Ebene liegen. Diese treffen nicht frontal sondern höchstens mit seitlichem Versatz aufeinander, so dass sie sich aufgrund ihres kreisförmigen Querschnitts gegenseitig abstossen und seitlich aneinander vorbeigehen können.The crossing of sections 13, 15 of the longitudinal bars 1 is not possible if they collide head-on. In order to avoid this, the longitudinal bars are helically bent around the bending mandrel or around the respective bending cam 3, so that the sections of the longitudinal bars 1 adjoining the bending area of the reinforcing mat surrounding the latter do not lie in a common plane. These do not meet each other head-on but at most with lateral offset, so that they repel each other due to their circular cross-section and can pass each other laterally.

Fig. 6 zeigt einen vergrösserten Ausschnitt von Fig. 5 in der Ansicht von vorne, wobei der Biegebalken in dieser Figur nicht dargestellt ist und von den Biegerollen 11 lediglich deren Kontor durch eine strichpunktierte Linie angedeutet ist. Die den Biegeradius bestimmende Biegefläche 18 der Biegenocken 3 hat an ihrem über die Halteelemente 9 mit dem Festbalken 5 verbundenen, festen Ende 7 einen grösseren Radius als an ihrem freien Ende 8 und sie ist zur Mittelachse des Biegenockens und zu der damit zusammenfallenden Mittelachse 4 des Biegedorns geneigt. Durch diese Neigung wirkt wirkt die Biegefläche als eine Leitfläche 17, die den daran anliegenden Längsstab während dem Biegen parallel zur Mittelachse 4 des Biegedorns in eine Richtung leitet, so dass sich eine schraubenförmige Biegung ergibt. Die Längsstäbe 1 werden durch die Leitflächen 17 zu den dünneren Enden der Biegenocken 3 gedrängt während sie von den Rollen um die Biegenocken 3 gezogen werden. Fig. 6 shows an enlarged section of Fig. 5 in the view from the front, wherein the bending beam is not shown in this figure and of the bending rollers 11 only the Kontor is indicated by a dash-dotted line. The bending radius determining bending surface 18 of the bending cams 3 has at its on the holding elements 9 connected to the fixed beam 5, fixed end 7 has a greater radius than at its free end 8 and it is to the center axis of the bending cam and the coincident center axis 4 of the mandrel inclined. By virtue of this inclination, the bending surface acts as a guide surface 17, which guides the longitudinal bar adjacent thereto during bending parallel to the central axis 4 of the bending mandrel in one direction, thus resulting in a helical bend. The longitudinal bars 1 are urged by the guide surfaces 17 to the thinner ends of the bending cams 3 while being pulled by the rollers around the bending cams 3.

In einer bevorzugten Ausführungsform haben die Biegenocken eine konusförmige Biegefläche 18 mit einem Konuswinkel β von vorzugsweise mindestens 2 Grad. In einer alternativen Ausführungsform weisen die Biegenocken an Stelle der konusförmigen Biegefläche 17 eine an ihrem Umfang schraubenförmig umlaufende Rille auf, wobei eine Flanke dieser Rille als zur Mittelachse des Biegedorns geneigte Leitfläche dient.In a preferred embodiment, the bending cams have a cone-shaped bending surface 18 with a cone angle β of preferably at least 2 degrees. In an alternative embodiment, instead of the cone-shaped bending surface 17, the bending cams have a groove which runs helically around its circumference, one flank of this groove serving as a guide surface inclined to the central axis of the bending mandrel.

Claims (7)

Verfahren zur Herstellung eines Bewehrungskorbs aus einer Baustahlmatte mit mehreren zueinander parallelen ersten Stäben (1) und diese in einer Ebene kreuzenden und an Kreuzungspunkten fest mit diesen verbundenen zweiten Stäben (2) durch ein- oder mehrmaliges Biegen der Baustahlmatte um einen zu den zweiten Stäben (2) parallelen, durch miteinander fluchtend angeordnete Biegenocken (3) gebildeten Biegedorn, den die Baustahlmatte dabei in einem Biegebereich umschlingt, dadurch gekennzeichnet, dass
bei mindestens einem Biegen der Baustahlmatte mindestens einer der ersten Stäbe (1) schraubenförmig um einen ihm zugeordneten Biegenocken gebogen und beidseits an den Biegebereich anschliessende Abschnitte dieses ersten Stabs (1) dadurch zumindest vorübergehend miteinander zur Kreuzung gebracht werden.Method for producing a reinforcing cage made of a reinforcing steel mat with a plurality of mutually parallel first bars (1) and these crossing in a plane and at crossing points firmly connected to these second bars (2) by one or more times bending the reinforcing mesh around one to the second bars ( 2) parallel, by bending alignment with each other arranged bending cam (3) formed bending mandrel which wraps around the reinforcing steel mat in a bending region, characterized in that
at least one bending of the reinforcing steel mat at least one of the first rods (1) helically bent around a bending cam associated therewith and on both sides of the bending area subsequent sections of this first rod (1) are thereby at least temporarily brought to intersection. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Baustahlmatte um einen zu den zweiten Stäben (2) parallelen Biegedorn auf sich selbst zurückgebogen wird, so dass Endpartien der ersten Stäbe Endhaken (13) bilden und dass die Baustahlmatte danach an einer von den Endhaken beabstandeten Stelle erneut um denselben zu den zweiten Stäben (2) parallelen Biegedorn gebogen und ein Hakenbogen (14) mindestens eines Endhakens (13) dadurch mit einem anderen Abschnitt (16) desselben ersten Stabs (1) zur Kreuzung gebracht wird.A method according to claim 1, characterized in that the reinforcing steel mat is bent back on itself around a bending mandrel parallel to the second bars (2), so that end portions of the first bars form end hooks (13) and in that the reinforcing mat then spaced at one of the end hooks Again, bend the same bending mandrel parallel to the second rods (2) and intersect a hook bow (14) of at least one end hook (13) with another portion (16) of the same first rod (1). Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 oder 2, mit einem Biegedorn, der durch mehrere miteinander fluchtend angeordnete Biegenocken (3) gebildet wird, einem Festbalken (5), der parallel zum Biegedorn unter diesem angeordnet ist und mit dem die Biegenocken (3) fest verbunden sind und mit einem zum Biegedorn parallelen und gegenüber diesem schwenkbar gelagerten Biegebalken (10), an dem vom Biegedorn radial beabstandete Biegerollen (11) befestigt sind, die durch Schwenken des Biegebalkens (10) um den Biegedorn bewegbar sind, so dass die Biegenocken unterquerende erste Stäbe (1) einer mit zum Biegedorn parallelen zweiten Stäben über dem Festbalken liegenden Baustahlmatte durch die Biegerollen (11) um den jeweiligen Biegenocken (3) ziehbar sind, dadurch gekennzeichnet, dass
die Biegenocken (3) je eine zur Mittelachse (4) des Biegedorns geneigte Leitfläche (18) aufweisen, die so geformt und angeordnet ist, dass sie einen ersten Stab (1) in zum Biegedorn paralleler Richtung auf eine Seite drängt während er durch eine Biegerolle (11) um den Biegedorn (3) gezogen wird.Apparatus for carrying out the method according to one of claims 1 or 2, comprising a bending mandrel formed by a plurality of mutually aligned bending cams (3), a fixed beam (5) parallel to Bending mandrel is arranged below this and with which the bending cams (3) are firmly connected and with a bending mandrel parallel to and pivotally mounted relative to this bending beam (10) are fixed to the bending mandrel radially spaced bending rollers (11) by pivoting the bending beam (10) are movable about the bending mandrel, so that the bending cams passing first rods (1) of a parallel to the bending mandrel second rods above the fixed beam reinforcing steel mat by the bending rollers (11) can be pulled around the respective bending cams (3), characterized that
the bending cams (3) each have a guide surface (18) inclined to the center axis (4) of the bending mandrel and shaped and arranged to urge a first rod (1) in a direction parallel to the bending mandrel to one side while passing through a bending roller (11) is pulled around the bending mandrel (3). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Biegeradius der Biegenocken (3) an ihrem einen Ende (7) grösser als an ihrem anderen Ende (8) ist, so dass die ersten Stäbe (1) zum dünneren Ende (8) gedrängt werden während sie um die Biegenocken (3) gezogen werden.Apparatus according to claim 3, characterized in that the bending radius of the bending cams (3) at one end (7) is greater than at its other end (8), so that the first rods (1) to the thinner end (8) are urged while being pulled around the bending cams (3). Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Biegenocken ein festes Ende (7) und ein freies Ende (8) haben und ihr Biegeradius am festen Ende grösser ist.Apparatus according to claim 4, characterized in that the bending cams have a fixed end (7) and a free end (8) and their bending radius at the fixed end is greater. Vorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Leitflächen (18) der Biegenocken (3) konusförmig sind.Apparatus according to claim 4 or 5, characterized in that the guide surfaces (18) of the bending cams (3) are conical. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Leitflächen (18) der Biegenocken schraubenförmig sind.Apparatus according to claim 4, characterized in that the guide surfaces (18) of the bending cams are helical.
EP07405105A 2007-04-02 2007-04-02 Method and device for manufacturing a reinforcement cage made of a reinforced steel mesh Active EP1977841B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07405105A EP1977841B1 (en) 2007-04-02 2007-04-02 Method and device for manufacturing a reinforcement cage made of a reinforced steel mesh
AT07405105T ATE450327T1 (en) 2007-04-02 2007-04-02 METHOD AND DEVICE FOR PRODUCING A REINFORCEMENT CAGE FROM A STRUCTURAL STEEL MAT
DE502007002177T DE502007002177D1 (en) 2007-04-02 2007-04-02 Method and device for producing a reinforcing cage from a structural steel mat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07405105A EP1977841B1 (en) 2007-04-02 2007-04-02 Method and device for manufacturing a reinforcement cage made of a reinforced steel mesh

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EP1977841A1 true EP1977841A1 (en) 2008-10-08
EP1977841B1 EP1977841B1 (en) 2009-12-02

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EP (1) EP1977841B1 (en)
AT (1) ATE450327T1 (en)
DE (1) DE502007002177D1 (en)

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ITPN20120069A1 (en) * 2012-11-19 2014-05-20 Awm Spa ELECTRO-WELDED FOLDING AUTOMATIC MACHINE
CN104985036A (en) * 2015-08-05 2015-10-21 四川鸥克建材科技有限公司 Bender of steel-wire mesh
CN107081360A (en) * 2017-06-09 2017-08-22 郭善财 Steel wire bender
WO2019183947A1 (en) * 2018-03-30 2019-10-03 深圳市君盈建筑科技有限公司 Method for bending and shaping steel bar frame mesh

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DE2456776A1 (en) * 1974-11-30 1976-08-12 Ludwig Haeberle Concrete staircase step reinforcing cage - comprises layers of rods at right angles to second set having doubly bent ends
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ITPN20120069A1 (en) * 2012-11-19 2014-05-20 Awm Spa ELECTRO-WELDED FOLDING AUTOMATIC MACHINE
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CN104985036B (en) * 2015-08-05 2017-03-01 四川鸥克建材科技有限公司 Steel wire bender
CN107081360A (en) * 2017-06-09 2017-08-22 郭善财 Steel wire bender
WO2019183947A1 (en) * 2018-03-30 2019-10-03 深圳市君盈建筑科技有限公司 Method for bending and shaping steel bar frame mesh

Also Published As

Publication number Publication date
EP1977841B1 (en) 2009-12-02
DE502007002177D1 (en) 2010-01-14
ATE450327T1 (en) 2009-12-15

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