EP0532018B1 - Machine et procédé pour la fabrication des armatures métalliques cylindriques ou coniques en forme de spirale - Google Patents

Machine et procédé pour la fabrication des armatures métalliques cylindriques ou coniques en forme de spirale Download PDF

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Publication number
EP0532018B1
EP0532018B1 EP92115554A EP92115554A EP0532018B1 EP 0532018 B1 EP0532018 B1 EP 0532018B1 EP 92115554 A EP92115554 A EP 92115554A EP 92115554 A EP92115554 A EP 92115554A EP 0532018 B1 EP0532018 B1 EP 0532018B1
Authority
EP
European Patent Office
Prior art keywords
spiral
coil
longitudinal
bars
machine
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.)
Expired - Lifetime
Application number
EP92115554A
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German (de)
English (en)
Other versions
EP0532018A1 (fr
Inventor
Elberino Faggiotto
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.)
HIGHSTONE VENTURE CAPITAL N.V.
Original Assignee
Highstone Venture Capital NV
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
Priority claimed from ITPD910155A external-priority patent/IT1257979B/it
Priority claimed from IT92PD000115A external-priority patent/IT1278427B1/it
Application filed by Highstone Venture Capital NV filed Critical Highstone Venture Capital NV
Publication of EP0532018A1 publication Critical patent/EP0532018A1/fr
Application granted granted Critical
Publication of EP0532018B1 publication Critical patent/EP0532018B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21F27/122—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 attaching a continuous stirrup to longitudinal wires
    • B21F27/124—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 attaching a continuous stirrup to longitudinal wires applied by rotation

Definitions

  • the invention relates to a method for the realization of spiral-shaped metal reinforcements, as described in the introductory part of claim 1.
  • a method of this kind is known from US-A-3 726 461.
  • a spiral is formed directly against and fixed to longitudinal rods. These rods temporarily support the spiral. Reinforcement rods are connected in a later stage to the preformed spiral cage.
  • the method according to the invention as characterized in claim 1 allows a considerable saving of time and energy for the operators, as the spiral coil is separately formed around the longitudinal reinforcement bars which are supported in the center of the spiral while this is being formed. After forming of the spiral, the reinforcement rods only have to be lifted against the inner side of the spiral and connected therewith.
  • the invention also relates to a machine for producing spiral-shaped metal reinforcements as characterized in claim 2.
  • Preferred embodiments are defined in the subclaims.
  • the first step when using the inventive method and machine is the positioning on the forks of the reinforcement longitudinal bars, that afterwards will be fixed longitudinally along the spiral; these forks are positioned between the two front parallel cylinders, that are long enough to support the spiral in its complete development.
  • the forks are raised higher than the parallel cylinders, so that the forming spiral doesn't touch the bars during the rotation.
  • the two parallel cylinders rotate in the same direction, thus making the feed of the spiral itself easier.
  • a shear is positioned in correspondence of the exit of the iron from the second bending machine.
  • the desired length that has been prefixed by means of special commands, is reached, the bending process is stopped.
  • the shear is brought near the iron, in one of its points near the exit from the second bending machine and then the shear is operated, cutting the iron and separating the whole spiral just produced from the iron hank that has still to be bent.
  • positioning forks On the machine, besides the forks that keep all the longitudinal bars inside the spiral, there is a second series of forks, called positioning forks, the upper part of which has an upper vertical notch slightly wider than the diameter of a single bar.
  • the positioning forks are raised; thanks to their shape, these positioning forks raise only one longitudinal bar and from inside bring it near the upper part of the spiral.
  • the bar can be welded to the spiral by the automatic welding machines.
  • Each one of these automatic welding machines is mounted on a trolley running on one or more special rails, that are parallel to the cylinders that support the spiral.
  • the torch of the welding machine is mounted on the trolley by means of some mobile arms that bring the torch near the welding point, take the torch away from the welding point and rotate it around the welding point. Also some feelers are mounted on the trolley: they locate the point on which the welding has to be made, that is, the contact point between the longitudinal bar and the spiral.
  • the welding machine For each longitudinal bar raised by the positioning forks, the welding machine is brought near the spiral and the feelers are positioned on the longitudinal bar. After that, the trolley advances and the feelers travel on the longitudinal bar.
  • feelers When the feelers locate the contact point between the longitudinal bar and a tract of the spiral, they stop the trolley and operate the successive approach of the welding machine torch, that carries out the welding at the corresponding point.
  • the positioning forks are lowered and the whole spiral rotates on the cylinders for the required angle.
  • the whole cycle is repeated, that is, the positioning forks are raised again to bring another longitudinal bar in contact with the spiral and the trolley with the welding machine slides again to weld the new bar to the spiral.
  • Both the feelers and the torch of the welding machine are mounted on a adjustable structure positioned on the trolley, so that they can adapt to the different sizes of the reinforcements to be realized.
  • the operation of the shear, of the positioning forks, of the trolleys, of the feelers and of the welding machines is controlled by a specific electric/electronic circuit.
  • the overturning scythe-shaped parts rotate on a plane that is perpendicular to the longitudinal bars; hooks equipped with a catch are hinged on their free end, in order to avoid the uncontrolled sliding of the reinforcement along the hooks themselves.
  • These hooks are hinged to the scythe-shaped parts, so that their rotation with respect to the scythe-shaped parts themselves can be limited; a catch near the pivot of each hook doesn't allow them to rotate in the direction opposite to the reinforcement lifting direction, past the approximately aligned position of the hook with the scythe-shaped part.
  • the upper mobile cylinder is raised in such a way as not to interfere with the working.
  • the inclined roller is coupled with a new series of bending rollers with a variable bending direction, depending on the spiral pitch. This way the spiral, after coming out of the bending machine, meets another series of rolls for the side bending.
  • Figure 1 shows the machine provided with equipment for bending irons (B), provided with a roller (C) that is inclined with respect to the coil (X) plane and inclined downward, that causes the lateral bending of the iron and directs the coil (X) itself toward the idle upper roller (D), that realizes the spiral diameter.
  • the mobile idle upper roller (D) can be moved manually or electromechanically, it can also move upward or downward to vary the diameter and parallely to the bending plane to conform with the coil (X) pitch.
  • the two front cylinders (E) support the spiral (X) in its formation and they both rotate in the same direction to help the feed of the forming spiral (X).
  • Figure 2 shows an axonometric view of the machine, in which it is possible to notice the parallel cylinders (E), that support the spiral (X) for its whole length; at one end of the cylinders (E) there is the bending equipment (B).
  • Figure 3 shows the bending unit of the machine, in case a very long-pitched spiral must be realized; it is possible to notice the bending rollers (B), the inclined roller (C) coupled with a second series of rollers (M), where the iron (X) is bent laterally.
  • Figures 4a, 4b, 4c, 4d show in detail the movement of one overturning scythe-shaped part (N), equipped with hook (G), that rests on and then grasps one bar (L) of the metal structure (R), resting on the parallel cylinders (E) and that rotating around the pivot (Q) raises and extracts the metal structure (R) from the machine.
  • Each hook (G) is provided with a catch that hinders the sliding of the structure along the hook (G) itself; besides, a tooth near the pivot (P) of each hook (G) doesn't allow the hook (G) itself to rotate in the direction opposite to that of the structure (R) lifting, past the approximately aligned position of the hook (G) with the scythe-shaped metal part (N).
  • the upper part of the positioning forks (Fp) is rhomboid-shaped, with an upper vertical notch slightly wider than a longitudinal bar (B).
  • these positioning forks (Fp) are raised, due to their form they take a single bar (B) from the group of longitudinal bars (B) to be welded and they raise it until the upper point inside the spiral (S), and then it has to be welded.
  • a shear for example, an electropneumatic shear (A) is placed at the exit of the iron from the bending cylinders (B); it is controlled by an electromechanism connected with the machine, that provides for cutting the iron of the spiral (S), thus separating the spiral itself (S).
  • a shear for example, an electropneumatic shear (A)
  • A is placed at the exit of the iron from the bending cylinders (B); it is controlled by an electromechanism connected with the machine, that provides for cutting the iron of the spiral (S), thus separating the spiral itself (S).
  • the feelers (T) and the torch (Z) of the welding machine are mounted on this trolley (I); on the edge of the trolley (I) there is also the welding machine (U).
  • the feelers (T) that can be of any kind, preferably consist of a stem equipped with an electric contact that passes near the longitudinal bar (L) to be welded.
  • the trolley provides for positioning the feeler (T) near this longitudinal bar (L) and for dragging it for the whole length of the bar itself.
  • the torch (Z) is retracted and/or rotated and the trolley (I) is set into motion again until when the feeler (T) doesn't find another contact point between the bar (L) and the spiral (S).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Piles And Underground Anchors (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Springs (AREA)

Claims (9)

  1. Procédé pour la fabrication d'armatures métalliques (R) en forme de spirales comprenant les opérations suivantes : former un enroulement (X) et fixer un certain nombre de barres d'armature longitudinales (L) sur l'intérieur de l'enroulement, caractérisé par le support dudit nombre de barres longitudinales d'armature (L) proches l'une de l'autre, former l'enroulement, tout en le faisant tourner, de manière que l'enroulement se développe autour des barres longitudinales supportées, après formation de l'enroulement, arrêter sa rotation et déplacer successivement les barres longitudinales d'armature (L) contre l'intérieur de l'enroulement, puis fixer ces barres (L) à l'enroulement (X) au moyen d'une machine de fixation (U) qui est mobile dans la direction longitudinale de l'enroulement.
  2. Machine pour la production d'armatures métalliques (R) en forme de spirales, comprenant un équipement de cintrage pour former un enroulement comprenant une série de rouleaux de cintrage (B), et au moins un, rouleau successif (C) incliné et déplacé par rapport au plan des rouleaux de cintrage (B), une série de fourchettes, mobiles verticalement (F), placées dans une direction longitudinale et équipées de moyens supports pour supporter les barres longitudinales d'armature (L), cet équipement de cintrage étant agencé en poste fixe de manière que le plan des rouleaux de cintrage soit perpendiculaire à la direction longitudinale, comprenant encore des moyens pour faire tourner et supporter l'enroulement (S), de manière que l'enroulement pendant sa formation se développe autour des barres longitudinales (L), et des moyens (u) pour fixer individuellement les barres d'armature sur l'intérieur de l'enroulement, lesquelles sont mobiles dans la direction longitudinale de l'enroulement.
  3. Machine selon la revendication 2, comprenant des fourchettes de positionnement mobiles verticalement (Fp) ayant un siège supérieur apte à loger une barre longitudinale d'armature (L), et dans laquelle ces fourchettes (Fp), lorsqu'elles sont surélevées, soulèvent une seule barre longitudinale (L) au moyen du siège supérieur et l'amènent à proximité de la partie supérieure de la spirale (S) sur la face intérieure de cette dernière.
  4. Machine selon la revendication 3, comprenant au moins une machine de soudage (U) mobile au moyen d'actionneurs électromécaniques ou électropneumatiques, et au moins un palpeur (T) monté sur un chariot (T), mobile parallèlement aux barres longitudinales (T), ledit palpeur (T) étant capable de détecter le point de contact entre la spirale (S) et la barre longitudinale (T) soulevée par les fourchettes de positionnement (Fp), et capable de faire fonctionner directement ou par l'intermédiaire d'un circuit électrique/électronique ou de tout autre moyen, la machine de soudage (U) qui est amenée près du point de contact entre la spirale (S) et les barres (T) et effectue le soudage.
  5. Machine selon l'une quelconque des revendications 2 à 4, comprenant une seconde unité de cintrage (M) ayant trois rouleaux définissant une direction de cintrage qui n'est pas parallèle à celle de l'unité principale de cintrage (B), de sorte qu'elle est capable d'effectuer des spirales à très long pas, et dans laquelle la position de la seconde unité de cintrage (M) peut être modifiée à la main ou par un procédé électromécanique.
  6. machine selon l'une quelconque des revendications 2 à 5, comprenant un rouleau supérieur (D) placé au-dessus des rouleaux de cintrage (B) pour former le diamètre et le pas de la spirale (S), et dans laquelle ce rouleau supérieur (D) peut être déplacé à la main et/ou mécaniquement pour faire varier le pas et le diamètre de la spirale (S).
  7. Machine selon l'une quelconque des revendications 2 à 6, comprenant deux cylindres parallèles (E) perpendiculaires au plan des rouleaux de cintrage (B), de manière à supporter la spirale (S) pendant sa formation, lesdits cylindres (E) étant capables de tourner autour de leur axe dans le même sens, afin de faciliter l'avance de la spirale (S) en cours de fabrication.
  8. Machine selon l'une quelconque des revendications 2 à 7, comprenant une série de pièces métalliques (N) de retournement en forme de faucilles, équipées de crochets (G) et placées à côté d'un des cylindres parallèles (E) pour extraire l'armature finie (R), et dans laquelle ces crochets (G) sont équipés de crampons qui bloquent le glissement de l'armature (R) le long du crochet (G) lui-même, et avec des dents proches du pivot du crochet pour bloquer le crochet (G) en l'empêchant de tourner dans le sens opposé au sens de soulèvement de l'armature au-delà de la position du crochet (G) sensiblement alignée avec la pièce en forme de faucille (N).
  9. Machine selon l'une quelconque des revendications 2 à 8, comprenant une cisaille (A) qui sectionne automatiquement la spirale (S) lorsque cette dernière a atteint la longueur nécessaire.
EP92115554A 1991-09-11 1992-09-11 Machine et procédé pour la fabrication des armatures métalliques cylindriques ou coniques en forme de spirale Expired - Lifetime EP0532018B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITPD910155A IT1257979B (it) 1991-09-11 1991-09-11 Macchina per la realizzazione di armature in ferro a spirale cilindriche e/o coniche per pali o pilastri di fondazione
ITPD910155 1991-09-11
ITPD920115 1992-06-26
IT92PD000115A IT1278427B1 (it) 1992-06-26 1992-06-26 Macchina per la realizzazione di armature in ferro a spirale con posizionamento e saldature automatiche

Publications (2)

Publication Number Publication Date
EP0532018A1 EP0532018A1 (fr) 1993-03-17
EP0532018B1 true EP0532018B1 (fr) 1997-12-03

Family

ID=26331777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92115554A Expired - Lifetime EP0532018B1 (fr) 1991-09-11 1992-09-11 Machine et procédé pour la fabrication des armatures métalliques cylindriques ou coniques en forme de spirale

Country Status (6)

Country Link
EP (1) EP0532018B1 (fr)
AT (1) ATE160712T1 (fr)
DE (1) DE69223360T2 (fr)
DK (1) DK0532018T3 (fr)
ES (1) ES2109968T3 (fr)
GR (1) GR3026234T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9909755D0 (en) * 1999-04-29 1999-06-23 Rom Limited Helical winding machine
ITUD20010055A1 (it) * 2001-03-19 2002-09-19 Piegatrici Macch Elettr Dispositivo e procedimento per il completamento di gabbie di armatura
WO2006119595A1 (fr) 2005-05-10 2006-11-16 Maria Helena Vieira Maccaferri Systeme en ligne de decoupe et de cintrage de barres, tiges et rouleaux en acier pour la fabrication d’etriers et de fermes longitudinales, et assemblage d’armatures en acier pour poutres, piliers, semelles, blocs, pieux, tambours et autres elements structuraux en beton arme
CN107584053B (zh) * 2017-09-06 2023-05-02 中国建筑第八工程局有限公司 半自动钢筋笼箍筋安装装置
CN112958724B (zh) * 2021-03-03 2022-07-29 中国十七冶集团有限公司 一种非标箍筋简易弯制方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903553A (en) * 1958-02-03 1959-09-08 American Pipe & Constr Co Continuous cage-making machine
CH481339A (de) * 1968-08-16 1969-11-15 Halmstads Jarnverks Ab Bewehrungseinheit für Betonrohre, Verfahren zu ihrer Herstellung und Vorrichtung zur Durchführung dieses Verfahrens
US3726461A (en) * 1969-01-29 1973-04-10 Nippon Concrete Ind Co Ltd Apparatus for forming pc concrete pipe reinforcing
FR2123116A1 (fr) * 1971-01-08 1972-09-08 Commissariat Energie Atomique Machine cintreuse-spiraleuse pour la fabrication de serpentins en tube ou fil metallique
US3875977A (en) * 1973-03-23 1975-04-08 Universal Oil Prod Co Method for making cylindrical screens

Also Published As

Publication number Publication date
EP0532018A1 (fr) 1993-03-17
GR3026234T3 (en) 1998-05-29
DE69223360T2 (de) 1998-03-26
ES2109968T3 (es) 1998-02-01
DK0532018T3 (da) 1998-08-10
DE69223360D1 (de) 1998-01-15
ATE160712T1 (de) 1997-12-15

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