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EP1977841B1 - Procédé et dispositif de fabrication d'un parement béton à partir d'un treillis soudé - Google Patents

Procédé et dispositif de fabrication d'un parement béton à partir d'un treillis soudé Download PDF

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Publication number
EP1977841B1
EP1977841B1 EP07405105A EP07405105A EP1977841B1 EP 1977841 B1 EP1977841 B1 EP 1977841B1 EP 07405105 A EP07405105 A EP 07405105A EP 07405105 A EP07405105 A EP 07405105A EP 1977841 B1 EP1977841 B1 EP 1977841B1
Authority
EP
European Patent Office
Prior art keywords
bending
bars
cams
parallel
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.)
Active
Application number
EP07405105A
Other languages
German (de)
English (en)
Other versions
EP1977841A1 (fr
Inventor
Manfred Loosli
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.)
RUWA-DRAHTSCHWEISSWERK AG
Original Assignee
RUWA-DRAHTSCHWEISSWERK AG
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 RUWA-DRAHTSCHWEISSWERK AG filed Critical RUWA-DRAHTSCHWEISSWERK AG
Priority to AT07405105T priority Critical patent/ATE450327T1/de
Priority to EP07405105A priority patent/EP1977841B1/fr
Priority to DE502007002177T priority patent/DE502007002177D1/de
Publication of EP1977841A1 publication Critical patent/EP1977841A1/fr
Application granted granted Critical
Publication of EP1977841B1 publication Critical patent/EP1977841B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 3.
  • 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 the 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 central 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 periphery, an edge of this groove serving as a guide surface inclined to the central axis of the bending mandrel.

Landscapes

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

Claims (7)

  1. Procédé de fabrication d'une cage d'armature à partir d'un treillis d'armature ayant une pluralité de premières barres (1) réciproquement parallèles et de deuxièmes barres (2) croisant celles-ci dans un plan et rigidement reliées à celles-ci en des points de croisement, en pliant une ou plusieurs fois le treillis d'armature autour d'un mandrin de pliage parallèle aux deuxièmes barres (2) et formé par des cames de pliage (3) réciproquement alignées, que le treillis d'armature contourne alors dans une zone de pliage,
    caractérisé en ce que
    lors d'au moins un pliage du treillis d'armature, au moins une des premières barres (1) est pliée hélicoïdalement autour d'une came de pliage y associée, et des sections adjacentes des deux côtés à la zone de pliage de cette première barre (1) sont ainsi amenées à se croiser au moins passagèrement.
  2. Procédé selon la revendication 1, caractérisé en ce que le treillis d'armature est replié sur lui-même autour d'un mandrin de pliage parallèle aux deuxièmes barres (2) de telle manière que des parties extrêmes des premières barres forment des crochets d'extrémité (13), et que le treillis d'armature est ensuite à nouveau plié à un endroit écarté des crochets d'extrémité autour du même mandrin de pliage parallèle aux deuxièmes barres (2), et l'arc (14) d'au moins un crochet d'extrémité (13) est ainsi amené à se croiser avec une autre section (16) de la même première barre (1).
  3. Dispositif pour la mise en oeuvre du procédé selon l'une des revendications 1 ou 2, comprenant un mandrin de pliage qui est formé par plusieurs cames de pliage (3) réciproquement alignées, une poutre fixe (5) agencée parallèlement au mandrin de pliage sous ce dernier et à laquelle les cames de pliage (3) sont rigidement reliées et une poutre de pliage (10) parallèle au mandrin de pliage et supportée de manière pivotante par rapport à ce dernier, à laquelle sont fixés des rouleaux de pliage (11) radialement écartées du mandrin de pliage et déplaçables autour du mandrin de pliage en pivotant la poutre de pliage (10) de telle manière que des premières barres (1), qui passent sous les cames de pliage et font partie d'un treillis d'armature posé sur la poutre fixe avec les deuxièmes barres parallèles au mandrin de pliage, peuvent être tirées autour des cames de pliage (3) respectives par les rouleaux de pliage (11),
    caractérisé en ce que
    chacune des cames de pliage (3) présente une surface de guidage (18) inclinée par rapport à l'axe (4) du mandrin de pliage, laquelle est conformée et agencée de sorte qu'elle force une première barre (1) vers un côté dans une direction parallèle au mandrin de pliage alors qu'elle est tirée autour du mandrin de pliage (3) par un rouleau de pliage (11).
  4. Dispositif selon la revendication 3, caractérisé en ce que le rayon de pliage des cames de pliage (3) est plus grand à l'une de leurs extrémités (7) qu'à l'autre extrémité (8), de manière que les premières barres (1) sont déplacées vers l'extrémité (8) plus mince alors qu'elles sont tirées autour des cames de pliage (3).
  5. Dispositif selon la revendication 4, caractérisé en ce que les cames de pliage ont une extrémité fixe (7) et une extrémité libre (8) et que leur rayon de pliage est plus grand à l'extrémité fixe.
  6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que les surfaces de guidage (18) des cames de pliage (3) sont de forme conique.
  7. Dispositif selon la revendication 4, caractérisé en ce que les surfaces de guidage (18) des cames de pliage sont de forme hélicoïdale.
EP07405105A 2007-04-02 2007-04-02 Procédé et dispositif de fabrication d'un parement béton à partir d'un treillis soudé Active EP1977841B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT07405105T ATE450327T1 (de) 2007-04-02 2007-04-02 Verfahren und vorrichtung zur herstellung eines bewehrungskorbs aus einer baustahlmatte
EP07405105A EP1977841B1 (fr) 2007-04-02 2007-04-02 Procédé et dispositif de fabrication d'un parement béton à partir d'un treillis soudé
DE502007002177T DE502007002177D1 (de) 2007-04-02 2007-04-02 Verfahren und Vorrichtung zur Herstellung eines Bewehrungskorbs aus einer Baustahlmatte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07405105A EP1977841B1 (fr) 2007-04-02 2007-04-02 Procédé et dispositif de fabrication d'un parement béton à partir d'un treillis soudé

Publications (2)

Publication Number Publication Date
EP1977841A1 EP1977841A1 (fr) 2008-10-08
EP1977841B1 true EP1977841B1 (fr) 2009-12-02

Family

ID=38465019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07405105A Active EP1977841B1 (fr) 2007-04-02 2007-04-02 Procédé et dispositif de fabrication d'un parement béton à partir d'un treillis soudé

Country Status (3)

Country Link
EP (1) EP1977841B1 (fr)
AT (1) ATE450327T1 (fr)
DE (1) DE502007002177D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPN20120069A1 (it) * 2012-11-19 2014-05-20 Awm Spa Macchina automatica piegatrice di reti elettrosaldate
CN104985036B (zh) * 2015-08-05 2017-03-01 四川鸥克建材科技有限公司 钢丝网折弯机
CN107081360A (zh) * 2017-06-09 2017-08-22 郭善财 钢丝网折弯机
CN108521763A (zh) * 2018-03-30 2018-09-11 深圳市君盈建筑科技有限公司 钢筋骨架的网片弯折成型方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH415249A (de) * 1964-07-11 1966-06-15 Ruwa Drahtschweisswerk Ag Verfahren und Maschine zur Herstellung von gebogenen, aus Stäben gebildeten Netzen
DE2456776A1 (de) * 1974-11-30 1976-08-12 Ludwig Haeberle Bewehrungskorb fuer treppenstufen u.dgl.
DE2819105C3 (de) * 1978-04-29 1981-10-15 Rudolf 7031 Holzgerlingen Bock Vorrichtung zum Biegen von Baustahlmatten
AT402032B (de) * 1991-07-17 1997-01-27 Evg Entwicklung Verwert Ges Maschine zum bearbeiten von gittermatten aus miteinander verschweissten längs- und querdrähten
DE4140421C2 (de) * 1991-12-07 1996-04-11 Otto Buettner Vorrichtung zum Biegen einer aus Längsstäben und Querstäben bestehenden Baustahlmatte
FR2721640B1 (fr) * 1994-06-28 1996-09-13 Bokobza Galdys Procédé de fabrication d'armatures pour béton armé.

Also Published As

Publication number Publication date
DE502007002177D1 (de) 2010-01-14
ATE450327T1 (de) 2009-12-15
EP1977841A1 (fr) 2008-10-08

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