EP2569110B1 - Bending machine for creating bends to the left and right - Google Patents

Bending machine for creating bends to the left and right Download PDF

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Publication number
EP2569110B1
EP2569110B1 EP11726050.5A EP11726050A EP2569110B1 EP 2569110 B1 EP2569110 B1 EP 2569110B1 EP 11726050 A EP11726050 A EP 11726050A EP 2569110 B1 EP2569110 B1 EP 2569110B1
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Prior art keywords
bending
pipe
lock
bent
arm
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EP11726050.5A
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German (de)
French (fr)
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EP2569110A1 (en
Inventor
August-Wilhelm SCHÄFER
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Aws Schafer Technologie GmbH
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Aws Schafer Technologie GmbH
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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
    • 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
    • B21D7/025—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member and pulling or pushing the ends of the work
    • 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
    • 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
    • B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
    • B21D7/162—Heating equipment

Definitions

  • the invention relates to an apparatus and a method for bending pipes in pipe bending machines, in which the pipes to be bent are heated inductively at the bending point.
  • the tubes are often thick-walled steel tubes with wall thicknesses of 3 to 120 mm and with large diameters of 50 to 1060 mm and weights of several tons. Correspondingly large and heavy are the pipe bending machines developed for this, with which bending radii of 0.1 to 10 meters can usually be realized.
  • the tube to be bent For each bend, the tube to be bent must be clamped at its straight end in a feed carriage, while at the end to be bent a so-called flexure lock is attached.
  • a so-called flexure lock is attached.
  • annular device for inductive heating between flexure and feed carriage commonly referred to as induction ring.
  • bending locks Due to the large forces to be absorbed, bending locks are often constructed very massively and take up a lot of space. A corresponding device is used for example in the DE 10 2007 022 004 A described.
  • the bending lock is mounted on a bending arm, wherein the bending arm can be rotated about a vertical axis of rotation.
  • the object of the invention is therefore to provide an economical method available in which such assembly work can be reduced to a minimum and thus a significant increase in throughput of such bending machines can be achieved in use in multiple bends.
  • pipe movements between the individual bending operations are performed.
  • This can be a Rotation of the tube about the central axis of the tube or a longitudinal feed of the tube can be made. In this way, a variety of bending operations can be performed sequentially.
  • FIG. 1 shows an isometric view of a double bending machine
  • FIG. 2 shows a plan view
  • Fig. 3 shows a front view
  • the FIGS. 4a to 4e show the individual processes in the multiple bending of a tube in plan view.
  • FIGS. 1 to 3 show such a double bending machine 1 with the two bending arms 2 and 3 and the Biegeschlössern 4 and 5.
  • the tube not shown to be bent is pushed on the feed carriage 6 through the induction ring 7, wherein either the bending lock 4 or the bending buckle 5 detects the tube and order the axis of rotation 8 or the axis of rotation 9 bends.
  • Fig. 4 shows the process of an S-shaped bend of a tube 20th
  • Fig. 4a is the initial state.
  • the tube 20 is located in the feed carriage 6, its front tube end 21 is pushed through the induction ring 7 and is held by the bending buckle 5.
  • the bending arm 3 is therefore positioned so that the desired bending radius 12 is adjustable and the bending arm 2 is moved out of the pivoting range.
  • Fig. 4b shows the end of the first bending process, in this case a 135 degree bend.
  • Fig. 4c shows that the flexure 5 was removed and the bending arm 3 was moved away and a feed to the feed length 13 was carried out.
  • Fig. 4d shows that the bending arm 2 has been positioned so that the bending radius 14 is adjustable, and that the bending lock 4 holds the tube 20.
  • the bending arm 3 remains moved out of the swivel range.
  • Fig. 4e shows the result of the second bending operation, in this case a 135 degree bend exactly opposite the first bend.

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

Description

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Biegen von Rohren in Rohrbiegemaschirien, in denen die zu biegenden Rohre an der Biegestelle induktiv erwärmt werden. Bei den Rohren handelt es sich hierbei um oft dickwandige Stahlrohre mit Wanddicken von 3 bis zu 120 mm und mit großen Durchmessern von 50 bis 1060 mm und dabei Gewichten von mehreren Tonnen. Entsprechend groß und schwer sind auch die dazu entwickelten Rohrbiegemaschinen, mit denen sich üblicherweise Biegeradien von 0,1 bis 10 Metern realisieren lassen.The invention relates to an apparatus and a method for bending pipes in pipe bending machines, in which the pipes to be bent are heated inductively at the bending point. The tubes are often thick-walled steel tubes with wall thicknesses of 3 to 120 mm and with large diameters of 50 to 1060 mm and weights of several tons. Correspondingly large and heavy are the pipe bending machines developed for this, with which bending radii of 0.1 to 10 meters can usually be realized.

Für jede Biegung muss das zu biegende Rohr dabei an seinem geraden Ende in einen Vorschubwagen eingespannt werden, während an dem zu biegenden Ende ein sogenanntes Biegeschloss befestigt wird. Zwischen Biegeschloss und Vorschubwagen befindet sich eine ringförmige Vorrichtung zum induktiven Erwärmen, üblicherweise auch als Induktionsring bezeichnet.For each bend, the tube to be bent must be clamped at its straight end in a feed carriage, while at the end to be bent a so-called flexure lock is attached. There is an annular device for inductive heating between flexure and feed carriage, commonly referred to as induction ring.

Aufgrund der wirkenden großen aufzunehmenden Kräfte werden Biegeschlösser oft sehr massiv konstruiert und nehmen viel Raum in Anspruch. Eine entsprechende Vorrichtung wird beispielsweise in der DE 10 2007 022 004 A beschrieben. Hierbei ist das Biegeschloss auf einem Biegearm montiert, wobei der Biegearm um eine vertikale Drehachse gedreht werden kann.Due to the large forces to be absorbed, bending locks are often constructed very massively and take up a lot of space. A corresponding device is used for example in the DE 10 2007 022 004 A described. Here, the bending lock is mounted on a bending arm, wherein the bending arm can be rotated about a vertical axis of rotation.

Oft müssen an Rohren mehrere Biegungen in verschiedene Richtungen nacheinander durchgeführt werden. Damit lassen sich komplizierte Krümmungen im Raum oder etwa S-förmige oder mäanderförmige Rohrgeometrien erreichen, die auf derartigen Rohrbiegemaschinen sehr präzise unter kontrollierten Bedingungen gefertigt werden können, und was am späteren Einsatzort oft nur unter Einsatz von Rohrformteilen und Schweißungen und unter Einschränkungen hinsichtlich der erreichbaren Präzision möglich wäre.Often several bends in different directions must be performed on pipes one after the other. This allows complicated curvatures in the room or about S-shaped or meandering tube geometries can be achieved, which can be made very precisely under controlled conditions on such tube bending machines, and often at the later site only using tubular fittings and welds and restrictions on the achievable precision it is possible.

Bei Rohrbiegemaschinen nach dem herkömmlichen Stand der Technik sind solche Biegevorgänge teilweise nacheinander durchführbar, wenn die gewünschte Rohrgeometrie aber erfordert, dass sich aber die Biegerichtung zwischen zwei aufeinander folgenden Biegevorgängen ändert, sind zwischen den Biegevorgängen sehr aufwändige Montagearbeiten erforderlich. Zu diesem Zweck muss nämlich jedes Mal das komplette Biegeschloss zusammen mit dem Biegearm demontiert werden und auf der spiegelbildlich entgegengesetzten Rohrseite wieder neu montiert und ausgerichtet werden. Oder das zu biegende Rohr muss aus einer Linksbiegemaschine entnommen werden und einer weiteren Maschine, einer Rechtsbiegemaschine, zugeführt werden. Hierbei entstehen geometrische Ungenauigkeiten, die nur durch sehr großen Aufwand beseitigt werden können.In prior art tube bending machines, such bending operations can be partially performed sequentially, but if the desired tube geometry requires, but the bending direction changes between two consecutive bending operations, very complex assembly operations are required between the bending operations. For this purpose, each time the complete bending buckle must be dismantled together with the bending arm and be re-assembled and aligned on the mirror-image opposite tube side again. Or the pipe to be bent must be removed from a left-hand bending machine and another machine, a Right bending machine, fed. This creates geometric inaccuracies that can only be eliminated by very great effort.

Beispielsweise wird in der DE 25 13 561 A1 eine Maschine gezeigt mit einem kleinem und einem großen Biegearm, einmal rechts und einmal links drehend. Um dieses System für Raumbiegungen nutzen zu können, muss das Rohr aus der rechtsdrehenden Maschinenseite entnommen und dann in die linksdrehende Seite erneut eingespannt und positioniert werden. Dies ist mit großem Zeitaufwand verbunden und führt zu Ungenauigkeiten.For example, in the DE 25 13 561 A1 a machine shown with a small and a large bending arm, turning once right and once left. To use this system for space bends, the tube must be removed from the right-hand side of the machine and then clamped again in the left-hand side and positioned. This is time consuming and leads to inaccuracies.

In der DE 100 60 605 A1 werden links und rechts drehende Biegeköpfe gezeigt, wobei das Rohrende aber wegen der übereinander liegenden Biegeköpfe komplett nach unten verfahren werden muss, um auf den zweiten Biegekopf kommen zu können,In the DE 100 60 605 A1 bending heads are shown turning left and right, but the pipe end has to be moved completely downwards because of the superimposed bending heads in order to reach the second bending head,

Da sowohl die zu biegenden Rohre als auch die Ausrüstungsteile des Biegeschlosses mit dem Biegearm sehr schwer sind, müssen großer Aufwand und große Vorsicht beim Betrieb der Hebezeuge getrieben werden, damit bei den Montagearbeiten keine Beschädigungen auftreten, und sich die Lage des zu biegenden Rohres nicht unkontrolliert ändert. Derartige Montagearbeiten können sich über viele Stunden hinziehen und begrenzen den Durchsatz an Biegevorgängen der Rohrbiegemaschine.Since both the pipes to be bent and the equipment of the bending buckle with the bending arm are very heavy, great effort and great caution in the operation of the hoists must be driven so that no damage occurs during assembly work, and not uncontrolled the position of the pipe to be bent changes. Such assembly work can take many hours and limit the throughput of bending operations of the pipe bending machine.

Die Aufgabe der Erfindung ist es daher, eine wirtschaftliche Methode zur Verfügung zu stellen, bei denen derartige Montagearbeiten auf ein Minimum reduziert werden können und somit eine deutliche Durchsatzerhöhung solcher Biegemaschinen im Einsatz bei Mehrfachbiegungen erreicht werden kann.The object of the invention is therefore to provide an economical method available in which such assembly work can be reduced to a minimum and thus a significant increase in throughput of such bending machines can be achieved in use in multiple bends.

Die Erfindung löst diese Aufgabe durch eine Vorrichtung zum Biegen von Rohren großer Durchmesser in unterschiedliche Biegerichtungen, wobei

  • in dieser Vorrichtung zum Biegen ein Rohr in axialer Richtung durch eine dieses Rohr ringförmig umschließende, induktiv wirkende Erwärmungseinrichtung geführt wird,
  • das Rohr an seinem zu biegenden Ende von einem Biegeschloss festgehalten wird,
  • sich bei dem in Vorschubrichtung des Rohres gelegenen Teil der Vorrichtung zum Biegen mindestens ein Biegearm befindet, der um eine vertikale Drehachse drehbar gelagert ist,
  • das Biegeschloss indirekt mit dem Biegearm verbunden ist,
  • das Biegeschloss eine Kraftübertragungseinrichtung zwischen der Aufnahmevorrichtung für Rohre und dem Biegearm aufweist,
  • die Kraftübertragungseinrichtung mit dem Biegearm in der Weise einstellbar verbunden ist, dass die Abstände zwischen der Mittelachse der Aufnahmevorrichtung für Rohre und der vertikalen Drehachse zwischen einem kleinsten und einem größten Abstand wählbar sind, wodurch ein Bereich zwischen einem größten und einem kleinsten Biegeradius einstellbar ist,
  • die Vorrichtung mindestens ein weiteres Biegeschloss mit einem weiteren Biegearm, einer Aufnahmevorrichtung für Rohre und einer Kraftübertragungseinrichtung für Biegekräfte von der Aufnahmevorrichtung auf den weiteren Biegearm aufweist,
  • wobei die Drehrichtung des weiteren Biegearms entgegengesetzt der Drehrichtung des ersten Biegearms ist, und
  • jeder der beiden Biegearme parallel zueinander und perpendikular zur Vorschubrichtung der zu biegenden Rohre bewegbar ist.
The invention solves this problem by a device for bending pipes of large diameter in different bending directions, wherein
  • in this device for bending a tube in the axial direction is guided by an annularly enclosing this tube, inductively acting heating device,
  • the pipe is held at its end to be bent by a flexible lock,
  • at least one bending arm, which is rotatably mounted about a vertical axis of rotation, is located in the part of the device for bending in the direction of advance of the pipe,
  • the flexure is indirectly connected to the bending arm,
  • the bending lock has a power transmission device between the pipe receiving device and the bending arm,
  • the power transmission device is adjustably connected to the bending arm in such a way that the distances between the center axis of the pipe receiving device and the vertical axis of rotation are selectable between a minimum and a maximum distance, whereby a range between a maximum and a minimum bending radius is adjustable;
  • the device has at least one further bending lock with a further bending arm, a receiving device for tubes and a force transmission device for bending forces from the receiving device to the further bending arm,
  • wherein the direction of rotation of the further bending arm is opposite to the direction of rotation of the first bending arm, and
  • each of the two bending arms parallel to each other and perpendicular to the feed direction of the pipes to be bent is movable.

Durch den Einsatz von 2 verfahrbaren Biegearmen mit Biegeschlössern kann erreicht werden, dass für Rechtsdrehungen und für Linksdrehungen der jeweiligen vertikalen Drehachsen jeweils entweder das eine oder das andere Biegeschloss zum Einsatz kommen kann, während das jeweils nicht benötigte Biegeschloss aus dem Schwenkbereich herausgefahren wird. Die aufwändigen Montagearbeiten entfallen dadurch komplett.Through the use of 2 movable bending arms with bending locks can be achieved that for clockwise and counterclockwise rotation of the respective vertical axes of rotation either one or the other bending buckle can be used while the respectively unneeded bending buckle is moved out of the pivoting range. The complex assembly work is thereby completely eliminated.

Die Erfindung löst diese Aufgabe auch durch ein auf die Vorrichtung abgestimmtes Verfahren zum Biegen von Rohren großer Durchmesser, indem

  • das Rohr in einem ersten Biegeschloss eingespannt wird, das mit einem ersten Biegearm verbunden ist, der um eine erste Drehachse gedreht werden kann,
  • während ein zweites Biegeschloss entgegen der Drehrichtung aus dem Schwenkbereich des Rohres in prependikularer Richtung zur Vorschubrichtung des zu biegenden Rohres wegbewegt wird,
  • dann unter Vorschub des Rohres ein erster Abschnitt des Rohres gebogen wird,
  • unter Fixierung des Rohres das Rohr aus dem ersten Biegeschloss ausgespannt wird,
  • das erste Biegeschloss aus dem Schwenkbereich des Rohres in prependikularer Richtung zur Vorschubrichtung des zu biegenden Rohres weg bewegt wird,
  • das zweite Biegeschloss in den Schwenkbereich des Rohres bewegt wird,
  • das zu biegende Rohr in das zweite Biegeschloss eingespannt wird,
  • dann unter Vorschub des Rohres ein zweiter Abschnitt des Rohres gebogen wird. Während des Wechsels der Biegerichtung bleibt das Rohr durch die Einspannung im Vorschubwagen in absolut fixierter Position.
The invention solves this problem also by an adapted to the device method for bending pipes of large diameter, by
  • the tube is clamped in a first bending lock, which is connected to a first bending arm, which can be rotated about a first axis of rotation,
  • while a second bending buckle is moved counter to the direction of rotation out of the pivoting range of the tube in the prependicular direction to the feed direction of the tube to be bent,
  • then, while advancing the tube, a first section of the tube is bent,
  • while fixing the tube, the tube is stretched out of the first bending lock,
  • the first bending lock is moved away from the pivoting area of the pipe in a prependicular direction to the feed direction of the pipe to be bent,
  • the second bending lock is moved into the swivel area of the pipe,
  • the pipe to be bent is clamped in the second bending lock,
  • then a second section of the tube is bent while advancing the tube. During the change of the bending direction, the tube remains in an absolutely fixed position due to the clamping in the feed carriage.

In weiteren Ausgestaltungen des erfindungsgemäßen Verfahrens werden Rohrbewegungen zwischen den einzelnen Biegevorgängen durchgeführt. Hierbei können eine Drehung des Rohres um die Mittelachse des Rohres oder auch ein Längsvorschub des Rohres vorgenommen werden. Auf diese Weise können auch eine Vielzahl von Biegevorgängen nacheinander durchgeführt werden.In further embodiments of the method according to the invention pipe movements between the individual bending operations are performed. This can be a Rotation of the tube about the central axis of the tube or a longitudinal feed of the tube can be made. In this way, a variety of bending operations can be performed sequentially.

Die Erfindung wird nachfolgend anhand der Figuren 1 bis 4e näher erläutert. Figur 1 zeigt eine Isometrie einer Doppelbiegemaschine, Figur 2 zeigt eine Draufsicht. Fig. 3 zeigt eine Vorderansicht. Die Figuren 4a bis 4e zeigen die einzelnen Vorgänge bei der Mehrfachbiegung eines Rohres in der Draufsicht.The invention will be described below with reference to FIGS. 1 to 4e explained in more detail. FIG. 1 shows an isometric view of a double bending machine, FIG. 2 shows a plan view. Fig. 3 shows a front view. The FIGS. 4a to 4e show the individual processes in the multiple bending of a tube in plan view.

Die Figuren 1 bis 3 zeigen eine derartige Doppelbiegemaschine 1 mit den beiden Biegearmen 2 und 3 und den Biegeschlössern 4 und 5. Das nicht gezeigte zu biegende Rohr wird auf dem Vorschubwagen 6 durch den Induktionsring 7 geschoben, wobei entweder das Biegeschloss 4 oder das Biegeschloss 5 das Rohr erfasst und um die Drehachse 8 oder die Drehachse 9 biegt.The FIGS. 1 to 3 show such a double bending machine 1 with the two bending arms 2 and 3 and the Biegeschlössern 4 and 5. The tube not shown to be bent is pushed on the feed carriage 6 through the induction ring 7, wherein either the bending lock 4 or the bending buckle 5 detects the tube and order the axis of rotation 8 or the axis of rotation 9 bends.

Fig. 4 zeigt den Vorgang einer S-förmigen Biegung eines Rohres 20. Fig. 4 shows the process of an S-shaped bend of a tube 20th

Fig. 4a ist der Ausgangszustand. Das Rohr 20 liegt im Vorschubwagen 6, sein vorderes Rohrende 21 ist durch den Induktionsring 7 hindurchgeschoben und wird vom Biegeschloss 5 festgehalten. Der Biegearm 3 ist daher so positioniert, dass der gewünschte Biegeradius 12 einstellbar ist und der Biegearm 2 ist aus dem Schwenkbereich herausgefahren. Fig. 4a is the initial state. The tube 20 is located in the feed carriage 6, its front tube end 21 is pushed through the induction ring 7 and is held by the bending buckle 5. The bending arm 3 is therefore positioned so that the desired bending radius 12 is adjustable and the bending arm 2 is moved out of the pivoting range.

Fig. 4b zeigt das Ende des ersten Biegevorgangs, in diesem Fall einer 135-Grad-Biegung. Fig. 4b shows the end of the first bending process, in this case a 135 degree bend.

Fig. 4c zeigt, dass das Biegeschloss 5 entfernt und der Biegearm 3 weggefahren wurde und ein Vorschub um die Vorschublänge 13 erfolgte. Fig. 4c shows that the flexure 5 was removed and the bending arm 3 was moved away and a feed to the feed length 13 was carried out.

Fig. 4d zeigt, dass der Biegearm 2 so positioniert wurde, dass der Biegeradius 14 einstellbar ist, und dass das Biegeschloss 4 das Rohr 20 festhält. Der Biegearm 3 bleibt aus dem Schwenkbereich herausgefahren. Fig. 4d shows that the bending arm 2 has been positioned so that the bending radius 14 is adjustable, and that the bending lock 4 holds the tube 20. The bending arm 3 remains moved out of the swivel range.

Fig. 4e zeigt das Ergebnis des zweiten Biegevorgangs, in diesem Fall einer zur ersten Biegung genau gegenläufigen 135-Grad-Biegung. Fig. 4e shows the result of the second bending operation, in this case a 135 degree bend exactly opposite the first bend.

Es ist hierbei klar, dass auch viele andere räumliche Biegevorgänge auf diese Weise durchgeführt werden können, ohne dass das Werkstück oder einer der Biegearme hierfür demontiert werden müssen, was gegenüber dem herkömmlichen Stand der Technik viel Rüstzeit einspart und somit den erreichbaren Umsatz der Maschine auf wirtschaftliche Weise erhöht.It is clear that many other spatial bending operations can be carried out in this way, without the workpiece or one of the bending arms have to be disassembled for this, which saves a lot of set-up time compared to the conventional state of the art and thus the achievable turnover of the machine on economic Way increased.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
DoppelbiegemaschineDouble bending machine
22
Biegearm ABending arm A
33
Biegearm BBending arm B
44
Biegeschloss ABend lock A
55
Biegeschloss BBend lock B
66
Vorschubwagenfeed carriage
77
Induktionsringinduction ring
88th
Drehachse ARotation axis A
99
Drehachse BRotation axis B
2020
Rohrpipe
2121
vorderes Rohrendefront pipe end
1212
Biegeradius ABending radius A
1313
Vorschublängefeed length
1414
Biegeradius BBending radius B

Claims (5)

  1. Apparatus (1) for bending large-diameter pipes (20) in different bending directions, wherein
    - the pipe (20) is mounted in an advancement carriage (6), which can be displaced in the longitudinal direction,
    - the pipe (20) is guided in the axial direction by an inductively active heating device (7), which encloses the pipe (20) in angular fashion and is arranged on the front part of the apparatus (1), as seen in the advancement direction of the pipe (20),
    - the front part of the apparatus (1), as seen in the advancement direction of the pipe, has arranged on it at least two bending arms (2, 3), each with a bending lock (4, 5), in which the pipe (20) is secured at its end which is to be bent, wherein the bending arms (2, 3) are surmounted such that they can be rotated in each case about a vertical rotary spindle (8, 9),
    - the bending lock (4, 5) is connected indirectly in each case to the bending arm (2, 3),
    characterized
    in that the bending lock (4, 5) has a respective force-transmission device between the accommodating apparatus and the bending arm (2, 3), which force-transmission device is connected to the bending arm (2, 3) in adjustable fashion such that the distances between the centre axis of the accommodating apparatus for pipes (20) and the vertical rotary spindle (8, 9) can be selected between a smallest distance and a largest distance, this making it possible to adjust a range between a largest bending radius and a smallest bending radius,
    in that a respective bending arm (2, 3) with its vertical rotary spindle (8, 9) is arranged on either side of a longitudinal axis of the advancement carriage (6), and in that the directions of rotation of the bending arms (2, 3) are oriented counter to one another during the bending operation,
    in that the two bending arms (2, 3) can be moved with their rotary spindles (8, 9) parallel to one another and in each case perpendicular to the advancement direction of the pipes (20) which are to be bent, and in that the two accommodating apparatuses have an introduction opening on a side of the bending locks (4, 5) which is oriented towards the pipe (20).
  2. Method of implementing a plurality of bending operations on large-diameter pipes (20) by means of an apparatus (1) corresponding to Claim 1, characterized in that
    - the pipe (20) is clamped in a first bending lock (4, 5), which is connected to a first bending arm (2, 3), which can be rotated about a first rotary spindle (8, 9),
    - while a second bending lock (4, 5) is moved away, counter to the direction of rotation, out of the pivoting region of the pipe (20) in the direction perpendicular to the advancement direction of the pipe which is to be bent,
    - then, with the pipe (20) being advanced, a first portion of the pipe (20) is bent,
    - with the pipe fixed, the pipe (20) is released from the first bending lock (4, 5),
    - the first bending lock (4, 5) is moved away out of the pivoting region of the pipe (20) via a movement of the rotary spindle (8, 9) of said bending lock in a direction perpendicular to the advancement direction of the pipe (20) which is to be bent,
    - the second bending lock (5) is moved into the pivoting region of the pipe (20) via a movement of the rotary spindle (8, 9) of said bending lock,
    - the pipe (20) which is to be bent is clamped into the second bending lock (5),
    - then, with the pipe (20) being advanced, a second portion of the pipe (20) is bent.
  3. Method according to Claim 2, characterized in that, between two bending operations, the pipe (20) is rotated about the centre axis of the pipe (20).
  4. Method according to either of Claims 2 and 3, characterized in that, between two bending operations, the pipe (20) is advanced longitudinally in the direction of the centre axis of the pipe (20).
  5. Method according to one of Claims 2 to 4, characterized in that a multiplicity of bending operations are carried out one after the other.
EP11726050.5A 2010-05-13 2011-04-26 Bending machine for creating bends to the left and right Active EP2569110B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11726050T PL2569110T3 (en) 2010-05-13 2011-04-26 Bending machine for creating bends to the left and right

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010020360.2A DE102010020360B4 (en) 2010-05-13 2010-05-13 Bending machine for left and right bends
PCT/DE2011/000438 WO2011141015A1 (en) 2010-05-13 2011-04-26 Bending machine for creating bends to the left and right

Publications (2)

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EP2569110A1 EP2569110A1 (en) 2013-03-20
EP2569110B1 true EP2569110B1 (en) 2014-09-03

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Country Status (10)

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US (1) US20140007639A1 (en)
EP (1) EP2569110B1 (en)
JP (1) JP2013526408A (en)
CN (1) CN103037994A (en)
BR (1) BR112012029020A2 (en)
CA (1) CA2798350A1 (en)
DE (1) DE102010020360B4 (en)
PL (1) PL2569110T3 (en)
RU (1) RU2560889C2 (en)
WO (1) WO2011141015A1 (en)

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DE102015106570B4 (en) 2015-04-28 2016-12-15 AWS Schäfer Technologie GmbH Method for induction bending forming of a pressure-resistant pipe with a large wall thickness and a large diameter
CN105268794A (en) * 2015-11-20 2016-01-27 张家港市立业机械有限公司 Pipe bending machine and full-automatic bending method thereof
US10427351B2 (en) 2016-02-19 2019-10-01 General Electric Company Apparatus for induction heating and bending of thermoplastic composite tubes and a method for using same
CN107282720B (en) * 2017-07-31 2023-08-25 浙江和良智能装备有限公司 Left-right co-bending type numerical control pipe bending machine
CN107626783A (en) * 2017-09-26 2018-01-26 张家港市立业机械有限公司 With the Full-automatic tube bending machine for detecing wrong function automatically
CN107570562B (en) * 2017-09-26 2024-04-23 张家港市立业机械有限公司 Full-automatic pipe bending machine based on servo drive
CN107626782A (en) * 2017-09-26 2018-01-26 张家港市立业机械有限公司 High-precision full-automatic bending machine
CN110216572B (en) * 2019-06-29 2021-09-14 郑益丽 Full-automatic elbow polishing machine
CN110899558B (en) * 2019-11-13 2021-08-27 阜阳晶宫绿建节能建筑有限责任公司 Reinforcing bar processingequipment is used in wallboard preparation
JP7041178B2 (en) 2020-01-22 2022-03-23 フタバ産業株式会社 Curved tube manufacturing equipment and curved tube manufacturing method
KR102473878B1 (en) 2021-04-21 2022-12-06 김영남 Left and right switch banding device
CN114115113B (en) * 2021-10-15 2023-11-21 上海发那科机器人有限公司 Intelligent pipe bending track generation method based on double-robot pipe bending system

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Publication number Publication date
US20140007639A1 (en) 2014-01-09
CN103037994A (en) 2013-04-10
JP2013526408A (en) 2013-06-24
RU2012153758A (en) 2014-06-20
CA2798350A1 (en) 2011-11-17
DE102010020360B4 (en) 2016-06-16
RU2560889C2 (en) 2015-08-20
DE102010020360A1 (en) 2011-11-17
WO2011141015A1 (en) 2011-11-17
EP2569110A1 (en) 2013-03-20
BR112012029020A2 (en) 2016-08-02
PL2569110T3 (en) 2015-02-27

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