EP2358487B1 - Method and apparatus for manufacturing spiral-reinforcements for reinforced concrete - Google Patents

Method and apparatus for manufacturing spiral-reinforcements for reinforced concrete Download PDF

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Publication number
EP2358487B1
EP2358487B1 EP09744193.5A EP09744193A EP2358487B1 EP 2358487 B1 EP2358487 B1 EP 2358487B1 EP 09744193 A EP09744193 A EP 09744193A EP 2358487 B1 EP2358487 B1 EP 2358487B1
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EP
European Patent Office
Prior art keywords
plane
metal wire
spiral
axis
fold
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.)
Not-in-force
Application number
EP09744193.5A
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German (de)
English (en)
French (fr)
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EP2358487A2 (en
Inventor
Anton Massimo Galluccio
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.)
Schnell SpA
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Schnell SpA
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Publication of EP2358487A2 publication Critical patent/EP2358487A2/en
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Publication of EP2358487B1 publication Critical patent/EP2358487B1/en
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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
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • 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
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E04C5/0618—Closed cages with spiral- or coil-shaped stirrup rod

Definitions

  • the present invention regards a method (see EP-A-0152397 ) and an apparatus (See US-A-4 799 373 ) for manufacturing spiral-reinforcements for reinforced concrete and other three dimensional developing elements, as well as the spiral-reinforcement thus made (See EP-A-0 152 397 ).
  • the spiral-reinforcements can have various configurations.
  • the pitch between a coil and the following one determines the density of the coils and so the characteristics of structural resistance of the reinforcement.
  • Spiral-reinforcements of the known type are illustrated in documents US 3,604,180 , EP 0 152 397 , EP 0 630 297 .
  • spiral-reinforcements are more difficultly feasible, as they require the use of machines more complex than the traditional ones and involve high costs compared with the economic value of the product.
  • the common bidimensional wire bending machines are able to manufacture spiral-reinforcements, but only with moderate length, since they do not provide for members suitable to support the same reinforcement during the formation.
  • the main problem lies in the fact that the spirals made by means of bidimensional wire bending machines are substantially without pitch, namely with the coils leaning the one against the other. This means that, at the moment of the installation, the spiral-reinforcements must be suitably lengthened, with obvious operative complications. In fact the operation requires considerable efforts and manufacturing variable pitch structures further results very difficult.
  • European patent application EP 0 452 246 describes a method applicable to bidimensional wire bending machines for manufacturing tridimensional metal reinforcements. Such method provides for the application of a twisting moment along the axis of the metal wire, so as to cause a permanent plastic deformation of the wire on the branch which supports the side just folded, in a way as to orient it in the space.
  • European patent application EP 0 630 297 describes a method and a machine that allow to manufacture spiral-reinforcements.
  • the metal wire is advanced in a straightening unit and is folded in a folding unit, wherein the spiral is produced perpendicularly downwards and leaves the production plane of the coils with the aid of the gravity.
  • the produced coils are hosted in a collect device wherein the same coils are hold laterally and at the lower part, the collect device having variable capacity in correspondent way to the dimensions of the already produced coils.
  • European patent EP 0 864 386 discloses a method and an apparatus for manufacturing spiral-reinforcements from a metal wire.
  • Such apparatus is constituted substantially of a unit for folding the metal wire fixed on a movable frame which is shifted in the feeding direction of the same metal wire.
  • the apparatus further comprises a device for collecting the coils that is moved perpendicularly to the fed metal wire direction and in the meantime rotates such as the angle of the coil produced in that moment be on the metal wire feed line.
  • Tridimensional wire bending machines are also known that, at the difference of the common bidimensional wire bending machines, are theoretically able to produce any type of tridimensional handmade article. Wire bending machines of this type are illustrated for example in the documents US 4,735,075 , EP 0 231 092 and EP 0 396 489 .
  • the fold head acts as usual orthogonally to the longitudinal axis of the metal wire being worked but can also rotate about the axis of the same metal wire and so manufacture any spatial geometry.
  • the fold head remains always orthogonal to the axis of the metal wire and rotating thereabout moves from a plane to the other of the infinite planes passing by the axis of the same metal wire.
  • the main drawback of such solution lies in the fact that to manufacture a spiral, the fold head must be rotated incrementally about the axis, always in the same direction and without ever coming back in the initial position. Therefore the portion of achieved structure, which develops orthogonally to the work plane and in axis to the fold head, rotates as well about the axis of the metal wire.
  • the tridimensional wire bending machines are suitable to manufacture also spiral-structures wherein also a pitch is achieved, provided that they have relatively limited longitudinal dimensions; instead they are not able to manufacture the normally required reinforcements, having dimensions of various meters, since during the formation they bend and consequently arrange in an uncontrolled way.
  • European patent application EP 1469 135 discloses a process for manufacturing a so-called 'broken spiral' reinforcement, or otherwise said 'broken helix', schematically represented for more clearness in fig. 1 .
  • the spiral 21 isconstituted by a succession of tracts 22 substantially perpendicular and of tracts 23 substantially oblique with respect to the reinforcement longitudinal axis L, forming coil configuration with polygonal projection on a plane perpendicular to the same longitudinal axis L.
  • the oblique tracts 23 appear inclined in directions opposite between them and on facing and parallel surfaces, but the path thereof is oriented in a way as to generate the extent of the spring always in a same direction with respect to the axis L of the same spiral.
  • the broken spiral structure turns out to be more resistant with respect to the single stirrup traditional clamping because of the continuity present in the same reinforcement, in addition to respect the perfect verticality condition of the descending tracts in order to assure the maximum resistance to the beam shear stress; in fact in the traditional clamping with stirrups, lacking the continuity, it is necessary to manufacture overlaps, also said hooks, which in situation of critical stress always constitute a point of potential danger, for the possible aperture of the hooks with trigger of degenerative phenomena of the structure. Therefore with a broken spiral structure the cited exigencies are satisfied, improving the performance of the final handmade article, and ferrous material is saved because of the elimination of the overlapping hooks present in the stirrups.
  • Italian patent ITBO 20050609 describes a method and an apparatus that allow to manufacture, in an at least partially automated manner, broken spiral reinforcements for reinforced concrete, starting from a traditional spiral structure, constituted by a succession of coils with horizontal tracts having variable lengths leaning the ones on the others.
  • the method provides for prearranging in a predetermined work position the leaning spiral structure and for grasping through grasping means at least part of a first coil of the structure.
  • a relative movement of controlled width of the grasping means is then performed for manufacturing the divaricating of a first side of the first coil, through the permanent deformation of such first side of the first coil.
  • the grasped sides of the first coil are released in order to perform the return of the grasping means in an idle position and the pitch feeding of the spiral structure is performed for positioning the successive coils at the plane of action of the grasping means and cyclically performing the divaricating of such coils, until completing the formation of a broken spiral reinforcement.
  • the broken spiral is in fact made from a leaning spiral of the traditional type that must be made separately by means of a different apparatus; moreover, during the execution, the expansion of the single leaning coils has to be performed, in order to obtain the desired pitch.
  • the successive Italian patent ITBO 20080030 discloses a method for manufacturing spiral reinforcements for reinforced concrete that provides for feeding a metal wire through a folding unit according to a predetermined longitudinal feed axis and for performing successive folds of such metal wire with respect to the longitudinal axis, in order to produce a succession of coils designed to form a spiral reinforcement.
  • the produced coils are preferably directed downwards by gravity and collected in a collect device. At least a part of such folds is made inclining the folding unit with respect to the metal wire axis.
  • the task of the present invention is that of solving the cited problems, devising a method that allows to manufacture in a simple and efficient manner spiral reinforcements for reinforced concrete from a suitable metal wire.
  • a further scope of the present invention is that of providing a method and an apparatus that allow to manufacture spiral reinforcements having suitably large extension.
  • Another object of the present invention is that of providing an apparatus for manufacturing spiral reinforcements for reinforced concrete having a simple conception, a securely reliable functioning and a versatile use.
  • figure 1 shows a schematic perspective view of a so-called broken spiral reinforcement of the known type
  • figure 2 shows a front view of the apparatus for manufacturing spiral reinforcements for reinforced concrete according to the invention
  • figure 3 shows a magnified perspective view of the operative zone of the apparatus according to the invention
  • FIGS. 4 - 9 show a perspective view of the operative zone of the apparatus, in successive operative phases
  • FIGS. 10 and 11 show a front view of the operative zone of the apparatus, in successive operative phases
  • figure 12 shows a functional scheme of the aforesaid operative zone of the apparatus
  • FIGS. 13 and 14 respectively show a perspective view and a plant view of different forms of coils feasible according to the method object of the present invention
  • figure 15 shows a perspective view of a broken spiral reinforcement manufactured according to the method object of the present invention.
  • the apparatus for manufacturing spiral reinforcements for reinforced concrete starting from a metal wire 2, for example a reinforcing rod, is indicated in its entirety with 1.
  • the apparatus 1 comprises suitable means for feeding the metal wire 2 according to a predetermined longitudinal feed axis A, preferably arranged horizontally.
  • such means for feeding the metal wire 2 are usefully provided with the feeding device of a conventional wire bending machine, provided in a known way with suitable straightening members 3.
  • a cutting unit 4 Downstream of the feeding device, according to the feed direction of the metal wire 2, is provided a cutting unit 4 designed to perform the cutting off of the metal wire 2 at the end of the phase of manufacturing of the metal spiral.
  • a folding unit 5 of the metal wire 2 Downstream of the cutting unit 4, according to the feed direction of the metal wire 2, is arranged a folding unit 5 of the metal wire 2.
  • the folding unit 5 is suitable to perform successive folds of the metal wire 2 with respect to the longitudinal feed axis A, to produce, one side after the other, a succession of coils 20 designed to form a spiral reinforcement, as better explained in the following.
  • the folding unit 5 is provided with a fold head that provides for a central pin or mandrel 7 and an eccentric folding pin 8, having substantially vertical and parallel axis (see in particular fig. 3 ).
  • the folding pin 8 has at its free end a tooth 9 which shapes a shouldering suitable to act on the metal wire 2 during certain folding phases. More precisely, such tooth 9 is suitable to perform a flexure of the metal wire 2 with respect to an abutting zone 10 preferably shaped in correspondence with the cutting unit 4, as explained in the following.
  • the folding pin 8 of the fold head is suitable to be shifted according to its own axis by means of suitable actuating members. Obviously it is possible to provide for the combined axial shifting of the mandrel 7 and of the folding pin 8.
  • a device 12 for collecting the produced coils 20, with a substantially vertical axis Under the folding unit 5 is arranged a device 12 for collecting the produced coils 20, with a substantially vertical axis.
  • the collect device 12 is preferably of the type illustrated in patent ITBO 20080030 which is recalled here.
  • the device 12 for collecting the produced coils 20 there are suitable to be arranged, in use, one or more substantially bracket-shaped support planes, on which the forming coils 20 are suitable to partially rest, so as to avoid the weight of the same forming coils 20 to weigh on the actuating unit.
  • a first and a second support plane 13, 14 horizontal and superimposed are provided.
  • the upper support plane 13 is arranged preferably just under the feed plane of the metal wire 2 according to the mentioned longitudinal feed axis A; the support planes 13, 14 can be vertically and/or horizontally movable, through suitable motor members 16, between an idle rear position and a work position advanced in correspondence with the coils formation zone.
  • the support planes 13, 14 can further be also suitably shaped to favour the working in relationship with the geometry of the product to be made.
  • the feeding of the metal wire 2 by the feed device 3 is then controlled, according to the predetermined longitudinal feed axis A defined by the apparatus (see fig. 4 ).
  • the metal wire 2 engages the folding unit 5, where successive folds of the metal wire 2 are performed with respect to said longitudinal feed axis A, in order to produce a succession of polygonal coils 20 suitable to form a spiral reinforcement 21.
  • the folding unit 5 first provides to carry out, in a known way, a series of folds of the metal wire 2 alternating feed phases of the same wire 2 with folding phases ( fig. 5 ).
  • folds in the plane are made, in a known way, thanks to the fact that the fold pin 8 is rotated about the mandrel 7 and the metal wire 2 interposed therebetween is then wound on the mandrel 7 by the folding pin 8; in folding phase the metal wire abuts in the channel defined by the fixed blade of the cutting unit 4.
  • the folding pin 8 is brought back by rotation in the initial position, to allow the feed of the metal wire. So the folds manufactured in such way result lying in a plane containing the feed axis A of the wire 2 and orthogonal to the axis of the mandrel 7 and of the folding pin 8.
  • template stirrup After completion of such possible first coil, so-called template stirrup, it is provided to manufacture a series of successive polygonal coils 20, constituted by a sequence of tracts 22 substantially perpendicular with respect to the longitudinal axis L of the spiral reinforcement 21 and of tracts 23 substantially oblique with respect to the same longitudinal axis L, forming coil configurations with polygonal projections on a plane perpendicular to the aforesaid longitudinal axis L of the spiral reinforcement 21.
  • the oblique tracts 23 of the spiral reinforcement 21 it is provided to carry out in ordered succession, that is in successive times, on at least one side of the polygonal coils 20, a first fold 23a on a plane orthogonal to the axis of the mandrel 7 and of the folding pin 8 and lying on a plane ⁇ perpendicular to the longitudinal axis L of the spiral reinforcement 21, and at least a second fold 23b extended in a third dimension suitably inclined with respect to the aforesaid plane ⁇ perpendicular to the longitudinal axis L of the spiral reinforcement 21 (see in particular fig. 15 ).
  • the second fold 23b extended in a third dimension is obtained further to a movement of flexure of the metal wire 2 on one of the planes containing the feed axis A of the same metal wire 2.
  • the cited fold 23b extended in a third dimension is carried out in suitable phase relationship with a movement of axial shifting of the folding pin 8 of the fold head, such as to perform a flexure of the metal wire 2 on a vertical plane ⁇ containing the feed axis A of the metal wire 2 and parallel to the axis of the mandrel 7 and of the folding pin 8, levering on a suitable fixed abutting zone 10 (see also fig. 12 ).
  • the folding pin 8 has the tooth 9 shaped in such a way as to hook the metal wire 2 and with its own axial shifting movement to act on the same metal wire 2 to perform the aforesaid flexure on the vertical plane ⁇ ; obviously the same effect can be obtained alternatively through an axial shifting of the mandrel 7, if suitably shaped.
  • the cited abutting zone 10 is constituted by the fixed blade of the cutting unit 4, suitably profiled to such scope.
  • the angular rotation of the folding pin 8 is operated, for example of an angle of 90°, to make the first fold 23a on a plane orthogonal to the axis of the mandrel 7 and of the same folding pin 8.
  • the first fold 23a is made ( fig. 10 )
  • the return of the folding pin 8 in the initial angular position and the successive movement of axial shifting of the same folding pin 8 upwards ( fig. 11 ) is operated in order to determine the desired inclination of the plane of lying of the preceding coil with respect to the oblique tract to be formed.
  • the folding pin 8 is then rotated angularly, to make the second fold 23b which will result always orthogonal to the axis of the mandrel 7 and of the folding pin 8 and consequently inclined with respect to the lying plane of the preceding coil ( fig. 6 ).
  • the metal wire is fed along the axis A, in order to obtain the desired length of the tract determined by the fold 23b ( fig. 7 ).
  • the fold pin 8 is axially shifted downwards, to allow the manufacture, through successive folds, of a further tract 22 substantially perpendicular with respect to the longitudinal axis L of the spiral reinforcement 21 (see successively figures 8 and 9 ).
  • such tridimensional fold can be constituted by two or more successive folds, also with different widths, obtained moving suitably the folding pin 8, possibly in combination with suitable feeds of the metal wire 2.
  • a broken spiral reinforcement 21 constituted by a succession of tracts 22 lying on a plane ⁇ substantially perpendicular to the longitudinal axis L of the same spiral reinforcement 21, forming coil configurations with polygonal projections perpendicular to the longitudinal axis, and of tracts 23 suitably inclined with respect to the aforesaid plane ⁇ perpendicular to the longitudinal axis L.
  • the sum of the first fold 23a made on a plane orthogonal to the axis of the mandrel 7 and of the same folding pin 8 and of one or more extended folds 23b, carried out in successive times offers the advantage of not inducing rotation movements of the structure during the formation about the axis of the metal wire and of controlling the pitch with the desired precision.
  • folds can be manufactured physically in the same tract of metal wire 2, even if in successive times, or in different times and positions, indifferently first the one then the other. But it is preferable to make the first fold 23a in plane and the second fold 23b in the third direction without making feeds of the metal wire 2 between the one and the other, so the two cited folds 23a, 23b will result at a distance in function of the overall dimensions and of the geometry of the members constituting the folding unit 5.
  • the advancing of the support planes 13, 14 in the work position is controlled.
  • the upper support plane 13 is suitable to support the coil 20 in formation, while the lower support plane 14, suitably distanced, supports the already formed coils 20.
  • the lower support plane 14 is suitable to support the previously formed branch of the coil 20, supporting the already formed coils 20 in suspension in the zone below the aforesaid plane. It is further possible to provide that the coils 20 which accumulate on the lower support plane 14 result progressively pressed against the upper support plane 13.
  • the displacement of the support planes 13, 14 in the idle rear position determines the extension and the positioning of the coils 20 inside the collection device 12.
  • the method and the apparatus according to the invention attain the scope of manufacturing in a simple and efficient way spiral reinforcements for reinforced concrete from a metal wire.
  • spiral reinforcements for reinforced concrete from a metal wire.
  • continuous and broken spiral reinforcements constituted by a succession of tracts substantially orthogonal and of tracts substantially oblique with respect to the reinforcement longitudinal axis.
  • the described apparatus allows to manufacture broken spiral reinforcements of any conformation, suitably varying the operative parameters.
  • the apparatus further allows, if required, to manufacture spiral reinforcements of the traditional type and/or stirrups. More precisely, it is possible to provide for the apparatus to be provided with suitable actuating means suitable to orientate the work plane of the folding members in a substantially vertical way, so as to allow the manufacturing of traditional type plane stirrups.
  • the spiral 20 has on the upper side the cited fold 23b, suitable to define the oblique tract 23, and a corresponding fold 23b on the lower side to bring the successive tract 22 back on a plane orthogonal to the spiral axis.
  • the coil 20a has instead at the end of the upper oblique tract 23 a contrary fold 23c, obtained by succession of two contrary shifts of the folding pin 8.
  • the coil 20b has oblique tracts 23 as well on the upper side as on the lower side, obtained through analogous folds of the coil 20a, so as to manufacture a substantially double pitch.
  • a characteristic of the invention lies in the fact that it allows the manufacture of spiral reinforcements having also relatively large extension. Such result is first due to the innovative idea of carrying out separately a fold in direction inclined with respect to the preceding folding plane. In fact this allows to have the control on the pitch to be made and very reduced movements of the forming spiral and consequently easier to control during the phase of collection and support of the forming product.
  • the reinforcement 21 can be pressed also automatically, with the coils 20 leaning the ones on the others, in a way as to be able to be stored and transported on the place of use in the minimum dimension configuration.
  • the spiral reinforcement 21 is blocked in the aforesaid compact configuration through suitable binding or anchorage means preferably before being extracted from the collection device 12.
  • the apparatus according to the invention has a high security level. In fact the apparatus does not require manual interventions so the productive process results completely automated and therefore considerably reduces the risks to which the operators in charge of the surveillance of the system are potentially exposed.
  • a further advantage consists of the high constructive and functional simplicity of the apparatus according to the invention.
  • the embodiment of the invention may vary depending on the requirements.
EP09744193.5A 2008-10-15 2009-10-12 Method and apparatus for manufacturing spiral-reinforcements for reinforced concrete Not-in-force EP2358487B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO2008A000637A IT1391412B1 (it) 2008-10-15 2008-10-15 Metodo e apparecchiatura per realizzare armature a spirale per cemento armato
PCT/IB2009/054478 WO2010044052A2 (en) 2008-10-15 2009-10-12 Method and apparatus for manufacturing spiral-reinforcements for reinforced concrete

Publications (2)

Publication Number Publication Date
EP2358487A2 EP2358487A2 (en) 2011-08-24
EP2358487B1 true EP2358487B1 (en) 2013-04-24

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EP09744193.5A Not-in-force EP2358487B1 (en) 2008-10-15 2009-10-12 Method and apparatus for manufacturing spiral-reinforcements for reinforced concrete

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EP (1) EP2358487B1 (it)
DK (1) DK2358487T3 (it)
ES (1) ES2412382T3 (it)
IT (1) IT1391412B1 (it)
WO (1) WO2010044052A2 (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103418634A (zh) * 2013-08-05 2013-12-04 安徽金星预应力工程技术有限公司 一种多功能拉拔机
ITUD20130131A1 (it) * 2013-10-14 2015-04-15 A C M Srl Automatismi Costruzioni Meccaniche Apparato per la piegatura di prodotti metallici oblunghi, quali barre, tondini o fili metallici, e relativo procedimento di piegatura

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1403849B1 (it) * 2011-02-04 2013-11-08 Galluccio Metodo e apparecchiatura per realizzare armature per cemento armato
ITBO20110293A1 (it) * 2011-05-23 2012-11-24 Schnell Spa Apparecchiatura per la realizzazione di staffe
ITUD20110143A1 (it) * 2011-09-13 2013-03-14 Piegatrici Macch Elettr Dispositivo di correzione della sagoma di una barra metallica piegata e relativo procedimento di correzione della sagoma

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FR2332826A1 (fr) * 1975-11-28 1977-06-24 Ermeto Sa Outil a cintrer et dispositif muni d'au moins un tel outil
AT368724B (de) * 1976-05-28 1982-11-10 Hufnagl & Co Rista Draht Biegemaschine fuer draht
FI69179C (fi) * 1984-01-24 1985-12-10 Rakennusvalmiste Oy Foerfarande foer tillverkning av spiralarmeringar och av dessabestaoende kombinerad spiralmeringsanordning
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103418634A (zh) * 2013-08-05 2013-12-04 安徽金星预应力工程技术有限公司 一种多功能拉拔机
CN103418634B (zh) * 2013-08-05 2015-12-23 安徽金星预应力工程技术有限公司 一种多功能拉拔机
ITUD20130131A1 (it) * 2013-10-14 2015-04-15 A C M Srl Automatismi Costruzioni Meccaniche Apparato per la piegatura di prodotti metallici oblunghi, quali barre, tondini o fili metallici, e relativo procedimento di piegatura
WO2015056144A1 (en) * 2013-10-14 2015-04-23 A.C.M. Srl Automatismi Costruzioni Meccaniche Apparatus for bending oblong metal products, such as bars, round pieces or metal wires, and corresponding bending method
CN106029246A (zh) * 2013-10-14 2016-10-12 Acm自动建设机械股份有限公司 用于使例如棒、圆形工件、金属线的长圆形金属制品弯曲的装置及相应的弯曲方法
CN106029246B (zh) * 2013-10-14 2019-09-06 Acm自动建设机械股份有限公司 用于使长圆形金属制品弯曲的装置及相应的弯曲方法

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Publication number Publication date
WO2010044052A3 (en) 2010-07-01
ITBO20080637A1 (it) 2010-04-16
WO2010044052A4 (en) 2010-09-02
IT1391412B1 (it) 2011-12-23
ES2412382T3 (es) 2013-07-11
EP2358487A2 (en) 2011-08-24
DK2358487T3 (da) 2013-07-29
WO2010044052A2 (en) 2010-04-22

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