EP0257182B1 - Pipe-bending machine - Google Patents
Pipe-bending machine Download PDFInfo
- Publication number
- EP0257182B1 EP0257182B1 EP87104357A EP87104357A EP0257182B1 EP 0257182 B1 EP0257182 B1 EP 0257182B1 EP 87104357 A EP87104357 A EP 87104357A EP 87104357 A EP87104357 A EP 87104357A EP 0257182 B1 EP0257182 B1 EP 0257182B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- machine frame
- template
- pipe
- 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
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Classifications
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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
- B21D7/021—Construction of forming members having more than one groove
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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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
- B21D9/07—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only
Definitions
- the invention relates to a pipe bending machine according to the preamble of claim 1.
- the bending template for changing the bending grooves can be raised and lowered in the vertical direction relative to the machine frame and can be moved in the horizontal direction transverse to the longitudinal extension of the frame. Furthermore, a clamping jaw is provided which is movable relative to the machine frame in order to clamp the pipe to be bent or to be able to remove it from one of the bending grooves. The alignment of the clamping jaw takes place via a drive device, by means of which the bending grooves of the bending template and the clamping surface of the clamping jaw are brought to coincide.
- Another solution proposes that the tube is moved transversely to the longitudinal extension of the tube bending machine frame when the tube is stationary or only moved in the axial direction by the feed carriage, and within this movable bending head only the bending template is mounted so that it can be swiveled up and down in the vertical direction.
- the present invention is based on the object of creating a pipe bending machine in which the relative movement between the bending head and the feed carriage and the relative movement between the clamping jaw and the bending head can be carried out in a structurally simple manner with low weight.
- the solution according to the invention permits the unimpeded attachment of other tools and devices which are necessary or expedient for pipe bending.
- the bending head forms a structural unit with the bending template and its drive together with the tensioning device. This solution enables a particularly simple vertical movement of the bending head.
- the attachment to a vertical side wall of the tube bending machine frame is present, in particular in connection with the proviso that two cylindrical, vertically directed guides are present on the machine frame, which are encompassed by one the structural unit of the bending template and Clamp-bearing beam, by an existing between the two guides Piston-cylinder drive is raised and lowered.
- the piston-cylinder drive consists of a closed cylinder embedded in the bar, in which the piston is arranged, the piston rod of which is firmly connected to the machine frame and the piston can be loaded with oil from two sides.
- the pipe bending machine 10 consists of the base frame 11, on the upper side of which the horizontally extending box-shaped support 12 is arranged, which protrudes from the base frame 11 at both ends and is also referred to as a machine frame.
- the feed carriage 13 is moved, which is mounted on conventional rails, not shown in the drawing.
- This feed carriage 13 can be moved on a guide 14 transversely to the longitudinal extent of the machine frame 12 via an associated known drive.
- a pressing device which is arranged on a rail 15a and at the same time can be moved with the feed carriage.
- This pressing device can also be a device for bending with a mandrel inside the tube 16, which is carried over the clamping sleeve 17 of the feed carriage and is moved in the direction of the bending head 18.
- the tube 16 is rotated via this clamping sleeve so that, as shown in FIG. 1, the tube can be bent in several planes.
- the drive motor is designated, which is arranged on the housing 20 and actuates the clamping sleeve 17.
- this unit consisting of a feed carriage, clamping sleeve and its drive is referred to as a positioning device.
- the bending head 18 has the drive motor 21, via which the tiered bending template 22 is rotated.
- This tier template has arranged different one above the other with correspondingly assigned diameters, so that depending on the choice of the groove in the tube 16, smaller or larger bending radii were maintained can be.
- the swivel arm 23 is fastened to the bending head with the clamping device 24, to which a clamping jaw to be described later is fastened. With 25 the slide rail pressure is designated.
- This unit of the bending head 18 with bending template, tensioning device and slide rail pressure is provided with a bar 26 which is attached to the vertical side 27 of the machine frame 12 and embedded therein.
- Figure 1 shows the bending head 18 in its upper position.
- FIG. 2 shows the bending head 18 in its downward position, the positioning device also being moved at the same time.
- FIG. 2 shows that this positioning device has been moved transversely to the vertical side wall 27 and is in a different position than that shown in the figure.
- the height adjustment of the bending head with the unit bending template 22, swivel arm 23 and slide rail 25 takes place according to the embodiment at the location of attachment to the machine frame 12, as can be seen from Figures 1 and 2, but also particularly clearly from Figures 3 and 4.
- FIG. 4 shows the two cylindrical guides 28 and 29 fastened to the machine frame 12, which are mounted on plates 30 and 31 of the machine frame.
- a cylinder 32 is embedded in the beam 26 and is closed by a cover 33 which is provided with multiple seals.
- the piston 34 is present in the cylinder 32 and also has multiple seals on its circumference.
- the piston rod 35 is attached to the plate 30 of the machine frame.
- the cylindrical guides are surrounded by sliding bushes 36 and 37 of the beam 26.
- FIG. 4 shows the raised position of the bending head because oil was pumped through the inlet opening 38 into the upper cylinder space. If, as FIG. 5 shows, oil is pumped through the lower inlet 39 to the other side of the piston, then the bar is lowered as shown in FIG.
- Figures 4 and 5 thus show that the fastening device for fastening the bending head above the beam on the machine frame is also designed as a lifting and lowering device.
- FIG. 6 shows the bending template 22 with the bending grooves 40 and 41 which are different at different heights and which are straight in this area for clamping with the aid of the clamping jaw 42. There may also be more than the two bending grooves shown. Finally, deviating from the illustration in FIG. 6, the upper groove 40 can also be the small bending radius and the lower groove 41 have the larger bending radius.
- the clamping jaw 42 is mounted on a lever 43 about the horizontal axis 44 of the clamping device.
- the bending template or its holder is provided with a sliding surface 45, 45a, on which the clamping jaw is raised when the clamping jaw is closed. The height 45 of the clamping jaw 42 is determined by the section 45a. If the tensioning device, as shown in FIG.
- FIG. 8 shows the slide rail 50, which moves a carrier 51 on the slide rail 25, also shown in FIG. 3, via the piston-cylinder arrangement 52 shown in FIG.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
Die Erfindung betrifft eine Rohrbiegemaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a pipe bending machine according to the preamble of claim 1.
Bei einer bekannten Rohrbiegemaschine (FR-A-2 530 980) ist die Biegeschablone zum wechseln der Biegerillen relativ zum Maschinenrahmen in vertikaler Richtung anhebbar und absenkbar gelagert und in horizontaler Richtung quer zur Längserstreckung des Rahmens verfahrbar. Ferner ist eine Spannbacke vorgesehen, die relativ zum Maschinenrahmen bewegbar ist, um das zu biegende Rohr festklemmen oder aus einer der Biegerillen herausnehmen zu können. Die Ausrichtung der Spannbacke erfolgt über eine Antriebsvorrichtung, durch die die Biegerillen der Biegeschablone und die Klemmfläche der Spannbacke zur Deckung gebracht werden.In a known pipe bending machine (FR-A-2 530 980), the bending template for changing the bending grooves can be raised and lowered in the vertical direction relative to the machine frame and can be moved in the horizontal direction transverse to the longitudinal extension of the frame. Furthermore, a clamping jaw is provided which is movable relative to the machine frame in order to clamp the pipe to be bent or to be able to remove it from one of the bending grooves. The alignment of the clamping jaw takes place via a drive device, by means of which the bending grooves of the bending template and the clamping surface of the clamping jaw are brought to coincide.
Eine andere bekannte Lösung für die Ausrichtung der Biegerille auf das zu biegende Rohr besteht darin, daß der Biegekopf mit dessen Antrieb sowie die Biegeschablone bestehen bleiben und der Vorschubwagen mit der Spannhülse, die das Rohr trägt, sowohl in vertikaler Richtung auf- und abbewegt, als auch quer zur Längserstreckung des Maschinenrahmens bewegt wird.Another known solution for the alignment of the bending groove on the pipe to be bent is that the bending head with its drive and the bending template remain and the feed carriage with the adapter sleeve that carries the pipe moves up and down in the vertical direction as is also moved transversely to the longitudinal extent of the machine frame.
Eine weitere Lösung schlägt vor, daß bei feststehendem bzw. lediglich in Achsrichtung durch den Vorschubwagen bewegtem Rohr der Biegekopf quer zur Längserstreckung des Rohrbiegemaschinenrahmens verfahren wird und innerhalb dieses verfahrbaren Biegekopfes lediglich die Biegeschablone in vertikaler Richtung auf- und abschwenkbar gelagert ist.Another solution proposes that the tube is moved transversely to the longitudinal extension of the tube bending machine frame when the tube is stationary or only moved in the axial direction by the feed carriage, and within this movable bending head only the bending template is mounted so that it can be swiveled up and down in the vertical direction.
Alle diese vorgenannten Lösungen haben den Nachteil eines hohen baulichen Aufwandes und die Schwierigkeit, daß die vielen Bauelemente, die zum Antrieb in vertikaler Richtung sowie quer zur Längserstreckung des Maschinenrahmens benötigt werden, schwierig unterzubringen sind und zufolge der großen zu bewegenden Masse stark dimensioniert sein müssen.All of the above solutions have the disadvantage a high level of structural complexity and the difficulty that the many components that are required for driving in the vertical direction and transversely to the longitudinal extent of the machine frame are difficult to accommodate and must be dimensioned strongly due to the large mass to be moved.
Die vorliegende Erfindung geht von der Aufgabe aus, eine Rohrbiegemaschine zu schaffen, bei der die Relativbewegung zwischen Biegekopf und Vorschubwagen sowie die Relativbewegung zwischen Spannbacke und Biegekopf baulich einfach mit geringem Gewicht durchzuführen ist.The present invention is based on the object of creating a pipe bending machine in which the relative movement between the bending head and the feed carriage and the relative movement between the clamping jaw and the bending head can be carried out in a structurally simple manner with low weight.
Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Merkmalen.This object is achieved according to the invention with the features specified in the characterizing part of patent claim 1.
Durch den erfindungsgemäßen Vorschlag, den Vorschubwagen quer zur Längserstreckung der Rohrbiegemaschine zu bewegen und die Querbewegung somit mit der Positioniervorrichtung durchzuführen, wobei der Biegekopf mit der Biegeschablone in Vertikalrichtung bewegt wird, wird eine Aufteilung der zwei verschiedenen Bewegungen in zwei unterschiedliche, an verschiedenen Orten angebrachte Bewegungseinrichtungen vorgenommen. Da die zwei Bewegungseinrichtungen baulich getrennte Einrichtungen an verschiedenen Orten der Rohrbiegemaschine sind, sind sie einzeln von geringem Gewicht und haben somit entsprechend einzeln eine geringe Masse.The proposal according to the invention to move the feed carriage transversely to the longitudinal extension of the pipe bending machine and thus to carry out the transverse movement with the positioning device, the bending head being moved in the vertical direction with the bending template, divides the two different movements into two different movement devices attached at different locations performed. Since the two movement devices are structurally separate devices at different locations on the pipe bending machine, they are individually light in weight and accordingly have a small mass accordingly.
Da die vorerwähnten Bewegungseinrichtungen getrennte Einrichtungen an zwei verschiedenen Stellen der Rohrbiegemaschine sind, bestehen keine Schwierigkeiten der baulichen Unterbringung, so daß die Bewegungseinrichtungen einander nicht stören.Since the above-mentioned moving devices are separate devices at two different locations on the pipe bending machine, there are no difficulties in structural placement, so that the moving devices do not interfere with each other.
Schließlich läßt die erfindungsgemäße Lösung das ungehinderte Anbringen sonstiger Werkzeuge und Einrichtungen zu, die zum Rohrbiegen notwendig oder zweckmäßig sind. Als notwendig werden dabei der Schwenkarm mit der Spannvorrichtung und der Spannbacke, gegebenenfalls auch eine Gleitschiene und gegebenenfalls auch ein Faltenglätter angesehen.Finally, the solution according to the invention permits the unimpeded attachment of other tools and devices which are necessary or expedient for pipe bending. The swivel arm with the clamping device and the clamping jaw, possibly also a slide rail and possibly also a smoothing iron, are considered necessary.
In weiterer erfindungsgemäßer Ausgestaltung wird vorgeschlagen, daß der Biegekopf mit der Biegeschablone und deren Antrieb zusammen mit der Spannvorrichtung eine bauliche Einheit bildet. Durch diese Lösung ist eine besonders einfache Vertikalbewegung des Biegekopfes möglich.In a further embodiment according to the invention it is proposed that the bending head forms a structural unit with the bending template and its drive together with the tensioning device. This solution enables a particularly simple vertical movement of the bending head.
Der besonderen Einfachheit der Ausbildung gilt auch der Vorschlag, daß die bauliche Einheit von Biegeschablone und Spannvorrichtung mit den jeweils zugeordneten Antrieben an dem Rohrbiegemaschinenrahmen an- und absenkbar geführt ist.The particular simplicity of the training also applies to the proposal that the structural unit of the bending template and the clamping device with the respectively assigned drives on the pipe bending machine frame is guided in and out.
In weiterer erfindungsgemäßer Ausgestaltung wird vorgeschlagen, daß die Befestigung an einer vertikalen Seitenwandung des Rohrbiegemaschinenrahmens vorhanden ist, insbesondere in Verbindung mit der Maßgabe, daß an dem Maschinenrahmen zwei zylindrische, vertikal gerichtete Führungen vorhanden sind, die umgriffen sind von einem die bauliche Einheit von Biegeschablone und Spannvorrichtung tragenden Balken, der durch einen zwischen den beiden Führungen vorhandenen Kolben-Zylinder-Antrieb angehoben und abgesenkt ist.In a further embodiment of the invention it is proposed that the attachment to a vertical side wall of the tube bending machine frame is present, in particular in connection with the proviso that two cylindrical, vertically directed guides are present on the machine frame, which are encompassed by one the structural unit of the bending template and Clamp-bearing beam, by an existing between the two guides Piston-cylinder drive is raised and lowered.
Besonders vorteilhaft besteht der Kolben-Zylinder-Antrieb aus einem in den Balken eingelassenen geschlossenen Zylinder, in dem der Kolben angeordnet ist, dessen Kolbenstange mit dem Maschinenrahmen fest verbunden und der Kolben von zwei Seiten mit Öl beaufschlagbar ist.Particularly advantageously, the piston-cylinder drive consists of a closed cylinder embedded in the bar, in which the piston is arranged, the piston rod of which is firmly connected to the machine frame and the piston can be loaded with oil from two sides.
Die Erfindung ist in der Zeichnung beispielhaft erläutert. Es zeigen:
- Figur 1
- eine Rohrbiegemaschine in perspektivischer Darstellung,
- Figur 2
- die Rohrbiegemaschine nach Figur 1 mit anderer Stellung des Biegekopfes,
- Figur 3
- den Biegekopf mit dessen Befestigung in Oberansicht,
- Figur 4
- einen vertikalen Schnitt entsprechend der Linie IV-IV nach Figur 3 mit angehobenem Biegekopf.
- Figur 5
- die Darstellung nach Figur 4 mit abgesenktem Biegekopf,
- Figur 6
- einen vertikalen Schnitt durch die Biegeschablone mit der Spannvorrichtung,
- Figur 7
- die Darstellung nach Figur 6 mit rückgefahrener Spannvorrichtung,
- Figur 8
- einen vertikalen Schnitt durch die Gleitschienenanordnung.
- Figure 1
- a pipe bending machine in perspective,
- Figure 2
- 1 with a different position of the bending head,
- Figure 3
- the bending head with its attachment in top view,
- Figure 4
- a vertical section along the line IV-IV of Figure 3 with the bending head raised.
- Figure 5
- 4 with the bending head lowered,
- Figure 6
- a vertical section through the bending template with the clamping device,
- Figure 7
- 6 with the retracted clamping device,
- Figure 8
- a vertical section through the slide rail arrangement.
Die Rohrbiegemaschine 10 besteht aus dem Untergestell 11, an dessen Oberseite der horizontal verlaufende kastenförmige Träger 12 angeordnet ist, der an seinen beiden Enden über das Untergestell 11 aufragt und auch als Maschinenrahmen bezeichnet wird.The
An der Oberseite dieses Maschinenrahmens ist der Vorschubwagen 13 bewegt, der an in der Zeichnung nicht dargestellten, aber üblichen Schienen gelagert ist. Dieser Vorschubwagen 13 ist an einer Führung 14 quer zur Längserstreckung des Maschinenrahmens 12 über einen zugeordneten bekannten Antrieb verfahrbar.At the top of this machine frame, the
Mit 15 ist eine Nachdrückeinrichtung bezeichnet, die auf einer Schiene 15a angeordnet ist und zugleich mit dem Vorschubwagen verfahrbar ist. Diese Nachdrückeinrichtung kann auch eine Einrichtung zum Biegen mit einem Dorn innerhalb des Rohres 16 sein, das über die Klemmhülse 17 des Vorschubwagens getragen und in Richtung zum Biegekopf 18 bewegt ist. Zugleich wird das Rohr 16 über diese Klemmhülse gedreht, damit, wie Figur 1 zeigt, das Biegen des Rohres in mehreren Ebenen erfolgen kann. Mit 19 ist der Antriebsmotor bezeichnet, der an dem Gehäuse 20 angeordnet ist und die Klemmhülse 17 betätigt. Diese Einheit aus Vorschubwagen, Klemmhülse und deren Antrieb wird in der Praxis als Positioniereinrichtung bezeichnet.With 15 a pressing device is designated, which is arranged on a
Der Biegekopf 18 hat den Antriebsmotor 21, über den die etagenförmige Biegeschablone 22 gedreht wird. Diese Etagenschablone hat übereinander angeordet verschiedene mit entsprechend zugeordneten Durchmessern, damit abhängig von der Wahl der Rille in dem Rohr 16 kleinere oder größere Biegeradien eingehalten werden können. Am Biegekopf ist der Schwenkarm 23 mit der Spannvorrichtung 24 befestigt, an der eine später zu beschreibende Spannbacke befestigt ist. Mit 25 ist die Gleitschienenandrückung bezeichnet. Diese Einheit des Biegekopfes 18 mit Biegeschablone, Spannvorrichtung und Gleitschienenandrückung ist mit einem Balken 26 versehen, der an der Vertikalseite 27 des Maschinenrahmens 12 und in diesen eingelassen, befestigt ist.The
Figur 1 zeigt den Biegekopf 18 in seiner oberen Stellung. Figur 2 zeigt den Biegekopf 18 in seiner nach unten gefahrenen Stellung, wobei zugleich dann auch die Positioniereinrichtung verfahren worden ist.Figure 1 shows the bending
Figur 2 zeigt, daß diese Positioniereinrichtung quer bis nahe zur vertikalen Seitenwand 27 verfahren ist und eine andere als in der Figur dargestellte Stellung einnimmt. Die Höhenverstellung des Biegekopfes mit der Einheit Biegeschablone 22, Schwenkarm 23 und Gleitschiene 25 erfolgt nach dem Ausführungsbeispiel am Ort der Befestigung am Maschinenrahmen 12, wie das aus den Figuren 1 und 2, aber auch besonders deutlich aus den Figuren 3 und 4 hervorgeht.FIG. 2 shows that this positioning device has been moved transversely to the
Figur 4 zeigt die beiden, am Maschinenrahmen 12 befestigten zylindrischen Führungen 28 und 29, die an Platten 30 und 31 des Maschinenrahmens gelagert sind.FIG. 4 shows the two
In dem Balken 26 ist ein Zylinder 32 eingelassen, der durch einen Deckel 33, der mit vielfachen Dichtungen versehen ist, abgeschlossen ist. In dem Zylinder 32 ist der Kolben 34 vorhanden, der an seinem Umfang ebenfalls vielfache Dichtungen hat. Die Kolbenstange 35 ist an der Platte 30 des Maschinenrahmens befestigt. Die zylindrischen Führungen sind von Gleitbuchsen 36 und 37 des Balkens 26 umgeben.A
Figur 4 zeigt die angehobene Stellung des Biegekopfes, weil durch die Einlaßöffnung 38 in den oberen Zylinderraum Öl gepumpt wurde. Sofern, wie Figur 5 zeigt, durch den unteren Einlaß 39 Öl an die andere Kolbenseite eingepumpt wird, dann wird der Balken entsprechend der Darstellung in Figur 5 abgesenkt.FIG. 4 shows the raised position of the bending head because oil was pumped through the inlet opening 38 into the upper cylinder space. If, as FIG. 5 shows, oil is pumped through the
Die Figuren 4 und 5 zeigen somit, daß die Befestigungsvorrichtung zur Befestigung des Biegekopfes über den Balken am Maschinenrahmen zugleich als Anhebe- und Absenkeinrichtung ausgebildet ist.Figures 4 and 5 thus show that the fastening device for fastening the bending head above the beam on the machine frame is also designed as a lifting and lowering device.
Figur 6 zeigt die Biegeschablone 22 mit den in verschiedenen Höhenlagen unterschiedlichen Biegerillen 40 und 41, die zur Einspannung mit Hilfe der Spannbacke 42 in diesem Bereich geradlinig sind. Es können auch mehr als die zwei dargestellten Biegerillen vorhanden sein. Schließlich kann auch, abweichend von der Darstellung in Figur 6, die obere Rille 40 den kleinen Biegeradius und die untere Rille 41 den größeren Biegeradius haben. Die Spannbacke 42 ist an einem Hebel 43 um die horizontale Achse 44 der Spannvorrichtung gelagert. Die Biegeschablone bzw. deren Halterung ist mit einer Gleitfläche 45, 45a versehen, an der beim Zufahren der Spannbacke diese angehoben wird. Durch den Abschnitt 45a wird die Höhenlage der Spannbacke 42 bestimmt. Sofern die Spannvorrichtung, wie in Figur 7 dargestellt ist, durch Einfahren der Kolbenstange 46 in den Zylinder 47 zurückgefahren wird, wobei an dem vorderen Kopf 48 der Kolbenstange die Gleitfläche 49 für die Spannvorrichtung befestigt ist, dann kippt der Hebel 43 um die horizontale Drehachse 44 nach unten, so daß die Spannbacke 42 unterhalb des Bereiches der Biegerillen gelangt und dadurch das gebogene Rohr einfach aus der Biegeschablone ohne Behinderung durch die Spannbacke weggeschoben werden kann. Es ist verständlich, daß mit dem Zufahren der Spannbacke an die Biegeschablone die Spannbacke über den Traghebel 43 und die Gleitflächen 45 und 45a in die Arbeitsstellung angehoben wird.FIG. 6 shows the bending
Figur 8 zeigt die Gleitschiene 50, die einen Träger 51 an der ebenfalls in Figur 3 gezeichneten Gleitschiene 25 über die in Figur 3 dargestellte Kolben-Zylinder-Anordnung 52 bewegt ist.FIG. 8 shows the
Claims (7)
- A pipe-bending machine comprising an elongate machine frame (12),- a feed carriage (13) movable in the longitudinal direction of said machine frame (12) and carrying a clamping sleeve (17) for chucking therein the pipe to be bent,- a bending head (18) arranged at one face of said machine frame (12), which is guided for vertical movement relative to said machine frame (12) and carries a bending template (22) rotatable about a vertical axis, which is a tiered template with a plurality of superposed bending grooves (40, 41) having different diameters for different bending radii, a relative movement in the vertical direction being performed between said bending template (22) and said machine frame (12) for using the one or the other bending groove (40, 41) or for changing said bending grooves,- a slide rail (25) cooperating with said bending template (22),- a tensioning means (24) pivotable about the axis of said bending template (22), having a movable tensioning jaw (42) with tensioning grooves adapted to said bending grooves (40, 41) of said bending template (22),
characterized in that- said feed carriage (13) is movable in the horizontal direction transversal to the longitudinal extension of said machine frame (12),- said tensioning jaw (42) is provided at a lever (43) pivotable about a horizontal axis (44),- and that said lever (43) is supported at a slide surface (45, 45a) extending oblique to the longitudinal axis of said bending template (22) and that it slides along said slide surface when said tensioning jaw is moved upwards to said bending grooves (40, 41) so that said tensioning grooves adjust to the heights of said bending grooves (40, 41). - The pipe-bending machine of claim 1, characterized in that said bending head (18) with said bending template (22) and the drive thereof forms a structural unit with said tensioning means (24).
- The pipe-bending machine of claim 2, characterized in that said structural unit of said bending template (22) and said tensioning means (24) with their respective associatd drives is guided for vertical movement along said machine frame (12).
- The pipe-bending machine of claim 3, characterized in that said structural unit of said bending template (22) and said tensioning means (24) is provided at a vertical side wall (27) of said machine frame (12).
- The pipe-bending machine of claim 4, characterized in that said structural unit is mounted to a beam (26) set in said side wall (27) of said machine frame (12).
- The pipe-bending machine of claim 4, characterized in that said machine frame (11) is provided with two cylindrical, vertically oriented guidings (28, 29) that are encompassed by a beam (26) supporting said structural unit of said bending template (22) and said tensioning means (24), which may be lifted or lowered by means of a piston-cylinder drive (32, 34) arranged between said two guidings (28, 29).
- The pipe-bending machine of claim 6, characterized in that said piston-cylinder drive (32, 34) consists of a closed cylinder (32) set in said beam (26), in which said piston (34) is arranged, the piston rod (35) of which being fixedly connected to said machine frame (11, 30), and that said piston (34) may be supplied with oil from two sides.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3627502A DE3627502C2 (en) | 1986-08-13 | 1986-08-13 | Pipe bending machine |
| DE3627502 | 1986-08-13 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0257182A2 EP0257182A2 (en) | 1988-03-02 |
| EP0257182A3 EP0257182A3 (en) | 1988-05-11 |
| EP0257182B1 true EP0257182B1 (en) | 1991-07-24 |
Family
ID=6307327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87104357A Expired - Lifetime EP0257182B1 (en) | 1986-08-13 | 1987-03-24 | Pipe-bending machine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4788845A (en) |
| EP (1) | EP0257182B1 (en) |
| CA (1) | CA1297392C (en) |
| DE (2) | DE3627502C2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4870849A (en) * | 1987-09-25 | 1989-10-03 | Eaton Leonard Technologies, Inc. | Method for tube bending with controlled clamp die arrangement |
| CH683598A5 (en) * | 1990-03-13 | 1994-04-15 | Mewag Maschinenfabrik Ag | Tube bending machine. |
| DE4124715C2 (en) * | 1990-07-26 | 1994-11-24 | Usui Kokusai Sangyo Kk | Device for multiple bending of a metal pipe |
| US5617753A (en) * | 1995-10-06 | 1997-04-08 | Pines Manufacturing | Low force auto-open tooling for tube bending machine |
| FR2746682B1 (en) * | 1996-03-27 | 1998-05-22 | Sipelec | METAL WIRE ARCHING MACHINE |
| EP0990471A1 (en) * | 1998-09-30 | 2000-04-05 | FABBRICA MACCHINE CURVATUBI CRIPPA AGOSTINO S.p.A. | Bending machine |
| CN101722218B (en) * | 2009-10-22 | 2011-06-15 | 张家港市杰创机械有限公司 | Forming device in pipe bender |
| SE534834C2 (en) * | 2010-05-17 | 2012-01-17 | Bengt Forsberg | Holding device for holding a thread blank |
| CN110560524B (en) * | 2019-09-27 | 2024-05-28 | 常州至能自动化设备有限公司 | Multi-diameter pipe bending machine |
| CN112496107B (en) * | 2020-11-28 | 2022-03-22 | 青岛船用锅炉厂有限公司 | Boiler coiled pipe bending forming processing system |
| CN112975421B (en) * | 2021-02-18 | 2022-06-14 | 湖北皓润新材料科技有限公司 | Copper pipe forming equipment |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1417294A (en) * | 1920-08-12 | 1922-05-23 | Hercules Mfg Company | Gripping device |
| US3299681A (en) * | 1960-03-22 | 1967-01-24 | Baldwin Lima Hamilton Corp | Program controlled tube bender |
| DE1527319A1 (en) * | 1963-09-10 | 1971-10-28 | Harten Geb Boers Gertrud Van | Tube bending machine for cold forming of tubes |
| DE1552984C3 (en) * | 1966-07-13 | 1975-01-09 | H. Schwarze Soehne, Gebr. Schwarze, Peter Wirtz Kg, 5000 Koeln | Tube bending machine with a bending table that can be swiveled on a vertical axis |
| DE1962590A1 (en) * | 1969-12-13 | 1971-06-24 | Hilgers Maschinen U App Bauans | Tube bending machine |
| DE2101162A1 (en) * | 1971-01-12 | 1972-07-20 | J. Banning Ag, 4700 Hamm | Tube bending machine |
| DE2249115A1 (en) * | 1972-10-06 | 1974-04-11 | Banning Ag J | HYDRAULICALLY OPERATED LINEAR DRIVE ON TUBE BENDING MACHINES |
| US4063441A (en) * | 1975-09-19 | 1977-12-20 | Eaton-Leonard Corporation | Apparatus for bending tubes |
| DE2746721C3 (en) * | 1977-10-18 | 1981-03-19 | Schwarze, Rigobert, Dipl.-Ing., 5000 Köln | Tube bending machine |
| DE2910174A1 (en) * | 1979-03-15 | 1980-09-25 | Benteler Werke Ag | Pipe bending and forming machine - bends pipes to different radii and has three forming rollers mounted on common shaft |
| US4495788A (en) * | 1982-08-02 | 1985-01-29 | Eaton-Leonard Corporation | Multiple curvature bender |
| DE3240799A1 (en) * | 1982-11-04 | 1984-05-17 | Rigobert Dipl.-Ing. 5000 Köln Schwarze | PIPE BENDING MACHINE |
-
1986
- 1986-08-13 DE DE3627502A patent/DE3627502C2/en not_active Expired - Lifetime
-
1987
- 1987-03-24 DE DE8787104357T patent/DE3771608D1/en not_active Expired - Fee Related
- 1987-03-24 EP EP87104357A patent/EP0257182B1/en not_active Expired - Lifetime
- 1987-07-13 CA CA000541861A patent/CA1297392C/en not_active Expired - Lifetime
- 1987-07-15 US US07/073,961 patent/US4788845A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE3771608D1 (en) | 1991-08-29 |
| US4788845A (en) | 1988-12-06 |
| EP0257182A3 (en) | 1988-05-11 |
| EP0257182A2 (en) | 1988-03-02 |
| DE3627502C2 (en) | 1995-06-14 |
| CA1297392C (en) | 1992-03-17 |
| DE3627502A1 (en) | 1988-02-18 |
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