EP0892686B1 - Maschine zum biegen oder wölben von profilen und biegekopf für solche maschine - Google Patents

Maschine zum biegen oder wölben von profilen und biegekopf für solche maschine Download PDF

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Publication number
EP0892686B1
EP0892686B1 EP97919493A EP97919493A EP0892686B1 EP 0892686 B1 EP0892686 B1 EP 0892686B1 EP 97919493 A EP97919493 A EP 97919493A EP 97919493 A EP97919493 A EP 97919493A EP 0892686 B1 EP0892686 B1 EP 0892686B1
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Prior art keywords
bending
supporting block
profile
rotation
tool holder
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EP97919493A
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English (en)
French (fr)
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EP0892686A1 (de
Inventor
Laurent Marque
Philippe Jaubert
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Robolix
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Robolix
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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
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • B21D11/07—Making serpentine-shaped articles by bending essentially in one plane
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member

Definitions

  • the invention relates to a bending or bending a profile such as rod, tube, bar, wire or similar according to the preamble of claim 1. It also targets a bending head intended to equip such a machine, according to the preamble of claim 15.
  • Current bending machines conventionally include a frame on which are mounted bending means comprising a clamping jaw and a bending shape with support surfaces between which pass, is tightened then rolled up the profile to bending, said bending means being mounted on a folding head able to pivot about a coaxial axis with the axis of the bending shape.
  • these machines bend usually include a guide strip arranged upstream of the clamping jaw and a flattening element arranged upstream of the bending form.
  • they include means for longitudinal displacement of the profiled relative to the frame.
  • a first solution consists in providing the bending machines with a clamp digitally controlled suitable for rotating the profiled around its axis in order to change the direction of bending.
  • bending machines have a first drawback resulting from the fact that, when changing the centering direction, the movements of the profiled generate so-called "whiplash" phenomena likely to alter the shape of the part carried out.
  • a second solution consists in carrying out bending machines with drive means in rotation of the folding head capable of rotating this last around the profile.
  • a third solution finally consists in bending machines with double heads folding associated with rotational drive means allowing this folding head to rotate on itself.
  • this solution leads to the realization of relatively complex and therefore expensive bending machines important cost.
  • Such a machine also allows bend tubes in both directions, but present also several disadvantages. Indeed, and first place, its bending head is relatively bulky (minimum footprint equal to four times the diameter of pebbles), which leads to a limitation of the complexity shapes that can be made. In addition, the center distance of rollers must be fixed, such a machine does not allows to realize that folding operations and not bending operations. Finally, mechanically, such machine is prone to slip and bend problems of the slide inside the groove, which lead to the need to exert significant efforts, and which may result in rapid deterioration of the parts mechanical.
  • the present invention aims to overcome all of the aforementioned drawbacks of bend or arch current and has as main objective to provide a machine of very simple design allowing to perform bending with a very high rate both ways authorizing the production of parts complex geometry.
  • Another object of the invention is to provide a bending or arching machine with a bending has a small footprint and constitutes a interchangeable head leading to a significant reduction in setting time.
  • the invention relates to a machine for bend or arch as defined in claim 1.
  • the bending or arching machine according to the invention therefore makes it very easy to bend in both directions one profile, the only operation to be carried out view of changing the direction of bending consisting of controlling the movement of the indexing means.
  • Such a machine therefore allows very high bending rates, and because of its very simple design leading to obtaining a compact folding head allows you to produce parts with complex shapes including 180 ° S-shaped bends.
  • the pinions of the rotating shafts are preferably arranged so as to form a gear
  • the rotary drive means include a gear wheel arranged to mesh with the pinion of the rotation shaft of the support block.
  • the indexing means comprise a finger housed in a bore made in the support block, and means for moving said finger capable of engaging it, either with the tool carriage or with a part integral with the frame.
  • the bending machine includes preferably two strips arranged upstream of the clamping rollers with bearing surfaces between which pass the profile to be bent, said strips being associated with longitudinal displacement means and adapted to alternately fulfill a function wrinkle remover or a slider function, depending on the direction of bending.
  • the sliders can also advantageously be adapted to ensure a tightening of the profiles.
  • the means for longitudinal displacement of these strips are suitable for printing an effort of thrust capable of ensuring the compression of the profile during the translation of the latter resulting from the pivoting of the bending rollers. This provision has effect for maintaining the maximum of the thread of the compression profile and thus avoid deformation of the last.
  • the bending machine comprises means for transverse movement of the strips capable of moving them transversely relative to the longitudinal axis of the profiled between a close position where said strips perform their wrinkle eraser or strip function and a spread position where said strips are spaced from a distance suitable for remaining in support of the profile, or for allow the passage of the profile displacement means.
  • the bending machine advantageously comprises, in view to provide support and guidance for this profile, two profile guiding and holding members, arranged on either side of the axis of movement of said profile, in upstream of the bending rollers, said guide members and holding being associated with elastic means capable of allow their transverse retraction in contact with the pliers.
  • each strip is preferably with a post housed in a clevis the interior of which are arranged elastic means arranged to urge said post so as to allow deflections of said strip on either side of a plane passing through the axis of longitudinal displacement of the streamlined.
  • This provision allows, without requiring any adjustment, to bend a profile having two different and / or non-circular sections, or successively two profiles of different sections and / or not circular.
  • the vertical means of movement of the support block are preferably adapted to position the latter in a position so-called retracted, where the bending rollers are arranged to allow rotation of said bending rollers relative to the profile.
  • the support block is pivotally mounted relative to on the wings of a piece in the form of a yoke forming with said support block a bending head, the frame of said bending machine with fixing means removable from said bending head.
  • the removable fixing means of the bending head preferably comprise two crank pins associated with longitudinal displacement means said crankpins relative to the frame of said machine, adapted to press the soul of the yoke of said head bending against said frame, and rapid means of fluid and electrical connections.
  • the yoke of the bending head advantageously has a core of thickness which is a function of the distance between the pinions of the rotation shafts, suitable for that the pinion of the rotation shaft of the support block meshes with the toothed wheel secured to the frame.
  • the invention extends to a bending head adapted to be removably mounted on a frame of bending machine as defined in claim 15.
  • the bending machine shown example in Figures 1 to 4 is adapted to ensure the tube bending 1.
  • it comprises a frame 2 on which are mounted bending means described below, and a clamp 3 capable of clamping the rear end of the tube, said clamp being housed at inside a cylindrical duct 4 and associated with drive means (not shown) capable of moving it longitudinally relative to the frame 2.
  • this bending machine can be provided with either means rotational drive of the clamp 3 about its axis longitudinal, or means for rotating the frame 2 around the clamp 3, and this in order to achieve multidirectional folds.
  • this bending machine has the particularity of having a bending head 5 adapted to be removably attached to the frame 2.
  • This bending head 5 comprises, first of all, two bending rollers 6,7 of conventional shape provided each of two superimposed grooves 8.9 allowing deform tubes 1 of different diameters, such as by example a tube of given diameter, and the same tube 1 covered with a sheath 1a.
  • bending rollers 6,7 are carried by a tool carriage 10 consisting of a plate 11, and two jaws 12, 13 on each of which is secures one of said bending rollers, each associated to a jack such as 14, able to allow them to be moved transversely relative to the axis of movement of the tube 1.
  • the tool carriage 10 is itself carried by a support block 15 relative to which it is rotatably mounted about an axis coaxial with the axis of one bending rollers 6.
  • this carriage tool holder 10 is secured to a rotation shaft 16 extending into a through bore formed in the support block 15, inside which are arranged bearings such as 17.
  • this rotation shaft 16 has a pinion 18 to the right of its end lower.
  • the support block 15 is mounted on the interior of a piece 19 in the form of a yoke with respect to which it is arranged to be able to rotate about an axis coaxial with the axis of the second roller bending 7.
  • this support block 15 is provided a second through bore inside which are arranged bearings such as 20, housing a shaft of rotation 21 rotatably mounted in bearings 22, 23 integral with the wings 19a, 19b of the piece in the form of a yoke 19.
  • this rotation shaft 21 is provided, at the right of its lower end, a pinion 24 arranged to mesh with the pinion 18 of the rotation shaft 16 of the tool trolley 10.
  • This bending head 5 comprises, in in addition, indexing means capable of joining together, namely the tool cart 10 with support block 15, either support block 15 with part 19.
  • indexing means comprise a finger 25 housed in a third bore in the support block 15, actuated hydraulically so as to be housed, either in a orifice 26 formed in the plate 11 of the tool carriage 10, or in an orifice 27 formed in the wing lower 19a of room 19.
  • the removable fixing means of this bending head 5 on frame 2 includes two hydraulic cylinders such as 28 each carrying a crank pin 29 arranged to come and stay in a notch 30 formed in the core of the part 19, and thus ensuring the blocking of the bending head 5 against the frame 2.
  • quick connection devices fluid and electrical are provided to allow the change of bending head 5.
  • the pivoting of the rollers 6, 7 of this head bending are obtained by means of a wheel toothed 31 mounted under the frame and operated by means of a motor 32 and a chain transmission 33, said wheel toothed being arranged to mesh with the pinion 24 of the rotation shaft 21 to the support block 15.
  • the center distance sprockets 18, 24, and therefore the diameter of these sprockets may be different from a bending head 5 with respect to to another, the thickness of the core of the piece 19 of each bending head is adapted so that the pinion 24 of the rotation shaft 21 of the support block 15 meshes with the gear 31.
  • the bending machine further comprises two strips 34, 35 suitable for alternately ensuring either a slider function, that is to say of guiding the tube 1 with recovery of effort, that is to say a fold-erase function.
  • each of these strips 34, 35 has two superimposed grooves 36, 37 combined with those of the bending rollers 6, 7.
  • These strips 34, 35 are further mounted inside a yoke 38 and has for this purpose a tenon 39 coming to be housed in this clevis 38, to which it is connected by means of a pin 40 authorizing deflections said strips on either side of a plane passing through the axis of the tube 1.
  • springs such as 41, 42 are interposed between the pin 39 and each of the wings of the yoke 38, so as to stabilize the strips 34, 35.
  • Each of these strips 34, 35 is, in besides, conventionally, mounted on a longitudinal rail 43 associated with a jack 44 making it possible to move longitudinally said strips.
  • this rail is itself mounted on a carriage 45 provided with a slide 46 for guiding said rail, each of said carriages 45 being associated with a jack (not shown) suitable for moving it transversely relative to the axis of movement of the tube 1.
  • the bending machine according to the invention also includes members for guiding and holding the tube 1 arranged on either side of the axis of movement of the latter, upstream of the bending rollers 6,7.
  • These guiding and holding members include, as shown in Figure 1, two casters 47, 48 each carried by an arm such as 49, extending through a lumen in the conduit 4 for guiding the clamp 3, said arms being mounted swivel, each on a leg such as 50 integral a flange 51 mounted on the pipe 4.
  • spiral springs (not seen in Figure 1) arranged around the axis of rotation of arms 49 and integral with legs 50 and said arms are adapted to maintain these, in the absence of solicitation, in a position where they are substantially tilted backwards with respect to the direction of travel of tube 1.
  • rollers 47, 48 provide the holding and guiding the tube 1 during movement longitudinal of the latter, but retract transversely under the effect of the pressure of the clamp 3 when the latter comes into contact with said casters.
  • the pinions 18, 24 of the shafts rotation 16, 21 of the bending head 5 have a height greater than that of toothed wheel 31, adapted to keep the pinion 24 meshed with said wheel toothed, whatever the vertical position of said bending head.
  • the indexing finger 25 is disposed, as shown in Figure 6b, so as to secure in rotation the tool carriage 10 and the support block 15.
  • Bending is carried out by bringing the wheel tooth 31 to turn clockwise watch. During this rotation, this toothed wheel 31 causes the rotation of the pinion 24 in the opposite direction clockwise.
  • the support block 15 being secured in rotation to the tool carriage 10, the rotation shaft 21 is therefore also blocked in rotation relative to said support block, and rotation of the pinion 24 causes the pivoting of the carriage assembly tool holder 10 / support block 15 around a coaxial axis with the axis of the bending roller 7 ( Figure 7c).
  • the indexing finger 25 is arranged, as as shown in Figure 10b, so as to secure in support block 15 and part 19.
  • the strip 35 is moved longitudinally, while the strip 34 is fold eraser.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (15)

  1. Biegemaschine zum Biegen oder Rollen eines Profils (1) in Form eines Stabes, Rohres, Drahtes oder Ähnlichem, die ein Gestell (2) umfasst, auf das Biegewerkzeuge sowie Vorschubmittel (3) für den Vorschub des Profils (1) in Längsrichtung zu dem genannten Gestell montiert sind, wobei die Biegewerkzeuge bestückt sind mit
    zwei auf einen Werkzeugwagen (10) montierten Biegerollen (6, 7), die mit Auflageflächen (8, 9) versehen sind, zwischen denen das zu biegende Profil durchgeführt und gedrückt, dann gerollt wird, und
    einem Träger (15) für den Werkzeugwagen (10), an den letzterer so montiert ist, daß er sich koaxial zu der Rotationsachse einer der Biegerollen (6) drehen kann, wobei die genannte Biegemaschine dadurch gekennzeichnet ist, daß der genannte Träger (15) sich gegenüber dem Gestell der Maschine (2) um eine Rotationsachse bewegt, die koaxial zu der Achse der anderen Biegerolle (7) verläuft, und dadurch, daß die Biegewerkzeuge bestückt sind mit:
    Verriegelungsmitteln (25), die geeignet sind, entweder für einen sogenannten Biegevorgang nach links den Werkzeugwagen (10) an dem Träger (15) oder für einen sogenannten Biegevorgang nach rechts den Träger (15) an dem Gestell (2) beim Drehen zu verriegeln, und
    Drehantriebsmittel (31-33), die geeignet sind, Werkzeugwagen (10) / Träger (15) zusammen in einer ersten Drehrichtung links von den Verriegelungsmitteln (25) bei dem Biegevorgang zu drehen, und den Werkzeugwagen (10) in einer zu der ersten Drehrichtung entgegengesetzten Richtung rechts von den Verriegelungsmitteln (25) beim Biegen zu drehen.
  2. Biegemaschine nach Anspruch 1, dadurch gekennzeichnet, daß:
    der Träger (15) zwei Bohrungen aufweist, die koaxial zu den Achsen der Biegerollen (6,7) ausgeführt sind,
    der Werkzeugwagen (10) von einer Rotationswelle (16) getragen wird, die durch eine der Bohrungen des Trägers (15) geführt ist und an ihrem dem Werkzeugwagen entgegengesetzten Ende über ein Ritzel (18) für den Drehantrieb verfügt,
    der Träger (15) über eine Welle (21) mit dem Gestell (2) verbunden ist, die durch die zweite Bohrung des besagten Trägers geführt und in Lagern (22, 23) montiert ist, die auf dem besagten Gestell befestigt sind, wobei die besagte Welle über ein Ritzel (24) für den Drehantrieb verfügt,
    die jeweiligen Drehantriebsmittel (31-33) von Werkzeugwagen (10) / Träger (15) zusammen einerseits und des Werkzeugwagens (10) andererseits derart ausgeführt sind, daß sie die Ritzel (18, 24) für den Drehantrieb der vorgenannten Wellen (16, 21) betätigen.
  3. Biegemaschine nach Anspruch 2, dadurch gekennzeichnet, daß
    die Ritzel (18, 24) der Rotationswellen (16, 21) als Getriebeteil ausgebildet sind,
    die Drehantriebsmittel (31-33) ein Zahnrad (31) aufweisen, das so ausgebildet ist, daß es mit dem Ritzel (24) der Rotationswelle (21) des Trägers (15) ein Getriebe bildet.
  4. Biegemaschine nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß die Verriegelungsmittel mit einem Zapfen (25) ausgestattet sind, der sich in einer Bohrung des Trägers (15) befindet, sowie über Verstellmittel für den besagten Zapfen, durch die er entweder in den Werkzeugwagen (10) oder in ein auf dem Gestell (2) befestigten Bauteil (19) einklinkt.
  5. Biegemaschine nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß sie über zwei Klemmbacken (34, 35) verfügt, die vor den Biegerollen (6, 7) angebracht sind und zwischen deren Auflageflächen (36, 37) das zu biegende Profil (1) hindurchgeführt wird, wobei die besagten Klemmbacken mit Mitteln (43, 44) für die Längsverschiebung bestückt und so beschaffen sind, daß sie je nach Biegerichtung alternativ die Funktion haben, Faltenbildung zu vermeiden oder zu drücken.
  6. Biegemaschine nach Anspruch 5, dadurch gekennzeichnet, daß die Klemmbacken (34, 35) so beschaffen sind, daß das Profil (1) festgeklemmt werden kann, wobei die Mittel (43, 44) für die Längsverschiebung der besagten Klemmbacken so beschaffen sind, daß ein Druck ausgeübt werden kann, durch den, während des Weitertransportes mit Hilfe der sich drehenden Biegerollen, (6, 7) das Profil (1) gestaucht wird.
  7. Biegemaschine nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß sie Mittel (45) für die Querverschiebung der Klemmbacken (34, 35) aufweist, die geeignet sind, sie quer zur Längsachse des Profils (1) zu verstellen, und zwar von einer eng zueinanderstehenden Stellung an, in der besagte Klemmbacken die Funktion der Faltenvermeidung ausüben oder drücken, bis zu einer weit auseinanderstehenden Stellung, in der der Abstand besagter Klemmbacken zueinander ein Stützen des Profils (1) gewährleistet, oder um die Durchführung von Vorschubmitteln (3) für das Profil (1) zu ermöglichen.
  8. Biegemaschine nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß jede der beiden Klemmbacken (34, 35) über einen Mitnehmer (39) verfügt, der sich unter einer Abdeckung (38) befindet, in der federnde Mittel (41, 42) enthalten sind, die so beschaffen sind, daß der Mitnehmer den Vorschub der besagten Klemmbacken auf den beiden seitlichen Vorschubebenen in Längsrichtung zur Vorschubachse des Profils (1) gestattet.
  9. Biegemaschine nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß:
    die Biegerollen (6, 7) mindestens zwei übereinanderliegende Rillen (8, 9) aufweisen, von denen jede geeignet ist, Profile (1) mit unterschiedlichen Querschnitten und/oder nichtkreisförmigen Querschnitten, eventuell auf unterschiedlichen Radien, zu verformen,
    die vertikalen Vorschubmittel (53) des Trägers (15) geeignet sind, letzteren so zu positionieren, daß die eine oder die andere der Rillen (8, 9) der Biegerollen (6, 7) koplanar zu der Verfahrachse der Profilstäbe (1) angeordnet ist.
  10. Biegemaschine nach Anspruch 9, dadurch gekennzeichnet, daß die vertikalen (53) Vorschubmittel des Trägers (15) so beschaffen sind, letzteren in eine zusätzliche, schräge Position bringen zu können, in der die Biegerollen (6, 7) so positioniert sind, daß das Drehen der besagten Biegerollen in bezug zum Profil (1) ermöglicht wird.
  11. Biegemaschine nach einem der vorgenannten Ansprüche, deren Längsverschiebebmittel für das Profil (1) mit einem Greifer (3) versehen sind, der geeignet ist, das hintere Ende des genannten Profils festzuhalten, und dadurch gekennzeichnet, daß er über zwei Vorrichtungen (47, 48) für die Führung und das Festhalten des Profils (1) verfügt, die beidseitig neben der Vorschubachse des genannten Profils vor den Biegerollen (6, 7) angeordnet sind, wobei die Führungs- und Haltevorrichtungen über federnde Mittel (52) verfügen, die geeignet sind, sie bei Kontakt des Greifers (3) quer verfahren zu lassen.
  12. Biegemaschine nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Träger (15) so montiert ist, daß er sich im Verhältnis zu den Seitenteilen (19a, 19b) eines Bauteils in Form einer Haube (19) dreht, die zusammen mit dem genannten Träger einen Biegekopf (5) bildet, wobei das Gestell (2) der besagten Biegemaschine lösbare Befestigungsmittel (28, 29) für den besagten Biegekopf aufweist.
  13. Biegemaschine nach Anspruch 12, dadurch gekennzeichnet, daß die lösbaren Befestigungsmittel des Biegekopfes (5) über zwei Kurbelzapfen (29) verfügen, die mit Kurbelzapfen-Vorschubmitteln (28) für den Vorschub in Längsrichtung zum Gestell (2) der besagten Maschine ausgerüstet sind, die geignet sind, die Haubenwand des besagten Biegekopfes gegen das besagte Gestell zu drücken, und daß die Befestigungsmittel über Schnellanschlussmittel für Fluide und Strom verfügen.
  14. Biegemaschine nach den Ansprüchen 3 und 13 gemeinsam, dadurch gekennzeichnet, daß die Haube (19) des Biegekopfes (5) eine Wand aufweist, deren Dicke abhängig ist von dem Mittenabstand der Ritzel (18, 24) der Rotationswellen (16, 21), und die so konstruiert ist, daß das Ritzel (24) der Rotationswelle (21) des Trägers (15) in das Zahnrad (31) greifen kann, das an dem Gestell (2) befestigt ist.
  15. Biegekopf, der abnehmbar auf einem Gestell (2) einer Biegmaschine montiert ist, ausgerüstet mit
    zwei Biegerollen (6, 7), die auf einem Werkzeugwagen (10) montiert sind und über Auflageflächen (8, 9) verfügen, zwischen denen das zu biegende Profil durchgeführt, gedrückt und dann gerollt wird,
    und einem Träger (15) des Werkzeugwagens (10), an den letzterer so montiert ist, daß er sich koaxial zu der Achse einer der Biegerollen (6) drehen kann, dadurch gekennzeichnet, daß besagter Träger sich um eine Achse dreht, die koaxial zu der Achse der anderen Biegerolle (7) verläuft, und zwar im Inneren eines Bauteils (19) in Form einer Haube, die geeignet ist, abnehmbar am Gestell (2) der Biegemaschine befestigt zu werden, und dadurch daß der Biegekopf bestückt ist mit
    Verriegelungsmitteln (25), die geeignet sind, entweder für einen sogenannten Biegevorgang nach links den Werkzeugwagen (10) mit dem Träger (15) oder bei einem sogenannten Biegevorgang nach rechts den Träger (15) mit dem Bauteil (19) in Form einer Haube beim Drehen zu verriegeln, und
    Drehantriebsmitteln (16, 18, 21, 24), die geeignet sind, Werkzeugwagen (10) / Träger (15) zusammen in einer ersten Drehrichtung links von den Verriegelungsmitteln (25) bei dem Biegevorgang zu drehen und den Werkzeugwagen (10) in einer zu der ersten Drehrichtung entgegengesetzten Richtung rechts von den Verriegelungsmitteln (25) bei dem Biegevorgang zu drehen.
EP97919493A 1996-04-10 1997-04-08 Maschine zum biegen oder wölben von profilen und biegekopf für solche maschine Expired - Lifetime EP0892686B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9604642 1996-04-10
FR9604642A FR2747328B1 (fr) 1996-04-10 1996-04-10 Machine a cintrer ou a cambrer un profile, et tete de cintrage pour une telle machine
PCT/FR1997/000621 WO1997037785A1 (fr) 1996-04-10 1997-04-08 Machine a cintrer ou a cambrer un profile, et tete de cintrage pour une telle machine

Publications (2)

Publication Number Publication Date
EP0892686A1 EP0892686A1 (de) 1999-01-27
EP0892686B1 true EP0892686B1 (de) 1999-12-08

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EP97919493A Expired - Lifetime EP0892686B1 (de) 1996-04-10 1997-04-08 Maschine zum biegen oder wölben von profilen und biegekopf für solche maschine

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Country Link
US (1) US6134932A (de)
EP (1) EP0892686B1 (de)
CA (1) CA2250362A1 (de)
DE (1) DE69700915T2 (de)
ES (1) ES2142156T3 (de)
FR (1) FR2747328B1 (de)
WO (1) WO1997037785A1 (de)

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ITVI20030233A1 (it) * 2003-11-19 2005-05-20 Pedrazzoli Ibp Spa Macchina curvatrice per elementi tubolari.
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JP6363560B2 (ja) * 2015-06-12 2018-07-25 三桜工業株式会社 パイプの曲げ方法及び曲げ装置
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ITRM20090534A1 (it) * 2009-10-15 2011-04-16 Cml Int Spa Macchina curvaturbi per curvare a raggio fisso e variabile a sinistra e a destra un pezzo allungato

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WO1997037785A1 (fr) 1997-10-16
FR2747328A1 (fr) 1997-10-17
DE69700915T2 (de) 2000-07-20
CA2250362A1 (fr) 1997-10-16
EP0892686A1 (de) 1999-01-27
ES2142156T3 (es) 2000-04-01
DE69700915D1 (de) 2000-01-13
FR2747328B1 (fr) 1998-06-19
US6134932A (en) 2000-10-24

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