EP0649688A1 - Dual head tube bender - Google Patents
Dual head tube bender Download PDFInfo
- Publication number
- EP0649688A1 EP0649688A1 EP94114929A EP94114929A EP0649688A1 EP 0649688 A1 EP0649688 A1 EP 0649688A1 EP 94114929 A EP94114929 A EP 94114929A EP 94114929 A EP94114929 A EP 94114929A EP 0649688 A1 EP0649688 A1 EP 0649688A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- pipe
- double
- tube
- head
- 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.)
- Granted
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Classifications
-
- 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
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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
Definitions
- the invention relates to a double-head pipe bending machine, namely a pipe bending machine with two bending heads attached to a machine frame, according to the preamble of patent claim 1.
- the usual pipe bending machines have a bending head on a machine frame with a rotatable bending template and a clamping jaw that presses the pipe against the bending template and is attached to a swivel arm. By swiveling the swivel arm and simultaneously rotating the bending template, the pipe section to be bent is drawn around the bending template.
- Double-head pipe bending machines are also known, which have two bending heads.
- the pipe to be bent is placed on the bending templates of both bending heads and the swivel arms with the associated clamping jaws pivoted simultaneously to bend the outer pipe sections.
- double-head tube bending machines only straight tubes can be bent, but not tubes that are already pre-bent.
- the invention has for its object to provide a double-head pipe bending machine, which is able to perform complex bending processes without retrofitting on the same machine.
- two bending heads protrude from the machine frame in the same direction. This direction is called the longitudinal direction.
- a pipe to be bent which is clamped in a pipe holding device, is fed to one of the bending heads in order to be bent thereby.
- the tube is released from the first bending head and the tube holding device is moved with the cross slide in the transverse direction in order to attach the pre-bent tube to the second bending head, which follows Bends.
- the fact that a single pipe holding device operates both bending heads means that the pipe is only clamped once for a complex bending process.
- the pipe If the pipe is processed by the second bending head, it can already be released from the pipe holding device because the slide rail provided on the second bending head holds the pipe in place and maintains its original orientation.
- the tube holding device can therefore be moved into a take-over position during the second bending process, in which it receives the next tube.
- a particular advantage is that the pipe bending machine according to the invention can also be used for mandrel bending, with a mandrel being pushed into the inside of the pipe, which reinforces the pipe section which is not to be bent. Wrinkle smoothers can also be used on the bending heads.
- the bending heads can be moved on the machine frame, for example in the longitudinal direction and / or in the transverse direction and / or in the vertical direction.
- All movements that are carried out by components of the pipe bending machine are expediently controlled by an electronic control unit, so that no manual intervention is required for the pipe processing.
- the pipe processing takes place via both bending processes fully automatically from clamping the unbent pipe to releasing the finished pipe.
- the double-head pipe bending machine has a machine frame 10 as a machine bed, which carries all components.
- Two bending heads 11 and 12 protrude from an end wall of the machine frame 10.
- Each of these heads has a support part 13 which carries on its upper side a rotatable bending template 14 which has at least one bending groove on its circumference, into which half of the circumference of the pipe to be bent is inserted.
- a pivot arm 15 is also provided on the head 13, which can be pivoted about the vertical axis of rotation of the bending template 14 and carries a clamping jaw 16 which presses the tube 17 against the circumference of the bending template 14.
- the clamping jaw 16 also has a groove which engages around part of the tube circumference. The clamping jaw 16 is pressed against the bending template 14 by a pressing device 18.
- the unbent pipe section is supported by a slide rail 19 which protrudes from the support part 13 Support arm 20 is provided and can be pressed laterally against the tube by a pressing device 21.
- Each bending head 11, 12 can be moved in height along a vertical guide 22 on the machine frame 10.
- a spindle 23 is used to drive this vertical movement.
- the bending heads can also be movable in the longitudinal direction, their distance from the machine frame 10 changing.
- the bending heads 11, 12 can also be moved in the transverse direction, that is to say parallel to the side of the machine frame to which they are attached.
- Fig. 1 the two bending heads 11, 12 are shown in the respective pipe receiving position, the pivot arms 15 being directed towards one another.
- the bending heads are therefore mirror images of one another.
- the bending templates 14 can be easily replaced, as can the clamping jaws 16.
- the pipe holding device 25 is provided on a cross slide 26 on the machine frame 10.
- the cross slide 26 consists of a cross slide 27, which can be moved in the transverse direction of the machine frame 10 along guide rails 28, and a longitudinal slide 29, which is movable on the cross slide along guide rails 30.
- the cross slide 27 or the longitudinal slide 29 can preferably also be moved in height.
- the longitudinal slide 29 carries the pipe holding device 25, in which the unbent pipe 17 is clamped and which is rotatable about the longitudinal axis of the pipe.
- the longitudinal direction is the axial direction of the pipe holding device 25 and the transverse direction is the direction perpendicular to this.
- a mandrel retraction cylinder 31 On the cross slide 26, a mandrel retraction cylinder 31 is provided which carries a mandrel 32 which passes through the tube holding device 25 and supports the part of the tube which is not to be bent from the inside.
- the longitudinal slide 29 is moved into the rear end position. Then the pipe is clamped in the pipe holder 25.
- the tube 17 is laterally applied to the bending template 14 of the bending head 12 by moving the longitudinal slide 29 and the transverse slide 27, while the clamping jaw 26 and the slide rail 19 are in the retracted position. Then the clamping jaw 16 and the slide rail 19 are pushed towards the tube 17, so that the tube is clamped between the bending template 14 and the clamping jaw 16. Then the pivot arm 15 and the bending template 14 are pivoted around the bending angle, so that the tube 17 is bent. Since the pipe is drawn here, the longitudinal slide 19 is advanced in the longitudinal direction.
- the jaw 16 and the slide rail 19 are removed from the tube and both bending heads 11 and 12 are lowered.
- the cross slide 26 is moved in the transverse direction in order to position the pre-bent tube on the bending head 11.
- the longitudinal slide 29 is advanced to bring the pipe section now to be bent into the bending position.
- the bending head 11 is raised and the tube is clamped between the bending template 14 and clamping jaw 16 of the bending head 11.
- the bending process is then carried out on the bending head 11 by simultaneously turning the bending template 14 and pivoting the swivel arm 15.
- the slide rail 19 of the bending head 11 holds the tube firmly, so that the tube can already be released by the tube holding device 25 and the cross slide 26 moves back into the starting position in order to receive a new unbent tube.
- Fig. 2 shows a bent tube that can be manufactured with the double-head tube bending machine according to Fig. 1.
- This tube has several bends in different spatial levels, the individual tube bends having different radii of curvature.
- the spatial plane in which the bend takes place is set by rotating the pipe holding device 25 about its longitudinal axis.
Abstract
Description
Die Erfindung betrifft eine Doppelkopf-Rohrbiegemaschine, nämlich eine Rohrbiegemaschine mit Zwei an einem Maschinengestell angebrachten Biegeköpfen, nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a double-head pipe bending machine, namely a pipe bending machine with two bending heads attached to a machine frame, according to the preamble of patent claim 1.
Die üblichen Rohrbiegemaschinen weisen an einem Maschinengestell einen Biegekopf mit einer drehbaren Biegeschablone und einer das Rohr gegen die Biegeschablone drückenden Spannbacke auf, die an einem Schwenkarm angebracht ist. Durch Verschwenken des Schwenkarms und gleichzeitiges Drehen der Biegeschablone wird der zu biegende Rohrabschnitt um die Biegeschablone herumgezogen.The usual pipe bending machines have a bending head on a machine frame with a rotatable bending template and a clamping jaw that presses the pipe against the bending template and is attached to a swivel arm. By swiveling the swivel arm and simultaneously rotating the bending template, the pipe section to be bent is drawn around the bending template.
Bekannt sind ferner Doppelkopf-Rohrbiegemaschinen, die zwei Biegeköpfe aufweisen. Das zu biegende Rohr wird an die Biegeschablonen beider Biegeköpfe angelegt und die Schwenkarme mit den zugehörigen Spannbacken werden gleichzeitig verschwenkt, um die äußeren Rohrabschnitte zu biegen. Mit derartigen Doppelkopf-Rohrbiegemaschinen können nur gerade Rohre gebogen werden, nicht aber Rohre, die bereits vorgebogen sind.Double-head pipe bending machines are also known, which have two bending heads. The pipe to be bent is placed on the bending templates of both bending heads and the swivel arms with the associated clamping jaws pivoted simultaneously to bend the outer pipe sections. With such double-head tube bending machines, only straight tubes can be bent, but not tubes that are already pre-bent.
Bei Rohrbiegemaschinen ergibt sich häufig das Problem, daß an Rohren dreidimensional mehrere Bögen in unterschiedlichen Raumebenen gebogen werden müssen. Nach dem Biegen der ersten Bögen muß dann häufig die Rohrbiegemaschine umgerüstet werden oder das Werkstück muß auf eine zweite Rohrbiegemaschine umgesetzt werden. Beide Vorgänge erfordern einen erheblichen Aufwand an Maschinenzeit und ggf. an Personal.The problem often arises with pipe bending machines that three bends have to be bent three-dimensionally on pipes in different spatial levels. After the first bends have been bent, the tube bending machine must then often be converted or the workpiece must be transferred to a second tube bending machine. Both processes require a considerable amount of machine time and possibly personnel.
Der Erfindung liegt die Aufgabe zugrunde, eine Doppelkopf-Rohrbiegemaschine zu schaffen, die imstande ist, komplexe Biegevorgänge ohne Umrüstung auf derselben Maschine durchzuführen.The invention has for its object to provide a double-head pipe bending machine, which is able to perform complex bending processes without retrofitting on the same machine.
Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den im Patentanspruch 1 angegebenen Merkmalen.This object is achieved according to the invention with the features specified in claim 1.
Bei der erfindungsgemäßen Doppelkopf-Rohrbiegemaschine stehen zwei Biegeköpfe zu derselben Richtung von dem Maschinengestell ab. Diese Richtung wird als Längsrichtung bezeichnet. Ein zu biegendes Rohr, das in eine Rohrhaltevorrichtung eingespannt ist, wird einem der Biegeköpfe zugeführt, um von diesem gebogen zu werden. Nach Beendigung dieses ersten Biegevorganges wird das Rohr von dem ersten Biegekopf freigegeben und die Rohrhaltevorrichtung wird mit dem Querschlitten in Querrichtung verfahren, um das vorgebogene Rohr an den zweiten Biegekopf anzusetzen, der den nachfolgenden Biegevorgang ausführt. Dadurch, daß eine einzige Rohrhaltevorrichtung beide Biegeköpfe bedient, ist für einen komplexen Biegevorgang ein nur einmaliges Einspannen des Rohres erforderlich.In the double-head pipe bending machine according to the invention, two bending heads protrude from the machine frame in the same direction. This direction is called the longitudinal direction. A pipe to be bent, which is clamped in a pipe holding device, is fed to one of the bending heads in order to be bent thereby. After completion of this first bending process, the tube is released from the first bending head and the tube holding device is moved with the cross slide in the transverse direction in order to attach the pre-bent tube to the second bending head, which follows Bends. The fact that a single pipe holding device operates both bending heads means that the pipe is only clamped once for a complex bending process.
Wenn das Rohr von dem zweiten Biegekopf bearbeitet wird, kann es bereits aus der Rohrhaltevorrichtung freigegeben werden, weil die am zweiten Biegekopf vorgesehene Gleitschiene das Rohr festhält und dessen ursprüngliche Ausrichtung beibehält. Die Rohrhaltevorrichtung kann daher während des zweiten Biegevorganges in eine Übernahmeposition gefahren werden, in der sie das nächste Rohr aufnimmt.If the pipe is processed by the second bending head, it can already be released from the pipe holding device because the slide rail provided on the second bending head holds the pipe in place and maintains its original orientation. The tube holding device can therefore be moved into a take-over position during the second bending process, in which it receives the next tube.
Ein besonderer Vorteil besteht darin, daß die erfindungsgemäße Rohrbiegemaschine auch zum Dornbiegen benutzt werden kann, wobei in das Rohrinnere ein Dorn hineingeschoben wird, der den nicht zu biegenden Rohrabschnitt verstärkt. Ferner können an den Biegeköpfen Faltenglätter benutzt werden.A particular advantage is that the pipe bending machine according to the invention can also be used for mandrel bending, with a mandrel being pushed into the inside of the pipe, which reinforces the pipe section which is not to be bent. Wrinkle smoothers can also be used on the bending heads.
Damit die Biegeköpfe das Bewegen des vorgebogenen Rohres zum zweiten Biegekopf nach dem Entlassen aus dem ersten Biegekopf nicht behindern, sind die Biegeköpfe an dem Maschinengestell verfahrbar, beispielsweise in Längsrichtung und/oder in Querrichtung und/oder in Höhenrichtung.So that the bending heads do not hinder the movement of the pre-bent tube to the second bending head after being released from the first bending head, the bending heads can be moved on the machine frame, for example in the longitudinal direction and / or in the transverse direction and / or in the vertical direction.
Sämtliche Bewegungsvorgänge, die von Komponenten der Rohrbiegemaschine ausgeführt werden, sind zweckmäßigerweise von einer elektronischen Steuereinheit gesteuert, so daß für die Rohrbearbeitung keine manuellen Eingriffe erforderlich sind. Die Rohrbearbeitung erfolgt über beide Biegevorgänge hinweg vollautomatisch vom Einspannen des ungebogenen Rohres bis zum Freigeben des fertigen Rohres.All movements that are carried out by components of the pipe bending machine are expediently controlled by an electronic control unit, so that no manual intervention is required for the pipe processing. The pipe processing takes place via both bending processes fully automatically from clamping the unbent pipe to releasing the finished pipe.
Im folgenden wird unter Bezugnahme auf die Zeichnungen ein Ausführungsbeispiel der Erfindung näher erläutert.In the following an embodiment of the invention will be explained with reference to the drawings.
Es zeigen:
- Fig. 1
- eine schematische Draufsicht der Doppelkopf-Rohrbiegemaschine und
- Fig. 2
- ein Beispiel eines gebogenen Rohres.
- Fig. 1
- a schematic plan view of the double-head pipe bending machine and
- Fig. 2
- an example of a bent pipe.
Die Doppelkopf-Rohrbiegemaschine weist als Maschinenbett ein Maschinengestell 10 auf, das sämtliche Komponenten trägt. Von einer Stirnwand des Maschinengestells 10 stehen zwei Biegeköpfe 11 und 12 ab. Jeder dieser Köpfe weist ein Tragteil 13 auf, das an seiner Oberseite eine drehbare Biegeschablone 14 trägt, die an ihrem Umfang mindestens eine Biegerille aufweist, in die die eine Hälfte des Umfanges des zu biegenden Rohres eingesetzt wird. An dem Kopf 13 ist ferner ein Schwenkarm 15 vorgesehen, der um die vertikale Drehachse der Biegeschablone 14 herum schwenkbar ist und eine Spannbacke 16 trägt, die das Rohr 17 gegen den Umfang der Biegeschablone 14 drückt. Die Spannbacke 16 weist ebenfalls eine Rille auf, die einen Teil des Rohrumfangs umgreift. Die Spannbacke 16 wird von einer Andrückvorrichtung 18 gegen die Biegeschablone 14 gedrückt.The double-head pipe bending machine has a
Der ungebogene Rohrabschnitt wird von einer Gleitschiene 19 abgestützt, die an einem vom Tragteil 13 abstehenden Tragarm 20 vorgesehen ist und von einer Andrückvorrichtung 21 seitlich gegen das Rohr gedrückt werden kann.The unbent pipe section is supported by a
Jeder Biegekopf 11,12 ist entlang einer vertikalen Führung 22 am Maschinengestell 10 in der Höhe verfahrbar. Für den Antrieb dieser Vertikalbewegung dient eine Spindel 23.Each
Ferner können die Biegeköpfe auch in Längsrichtung bewegbar sein, wobei ihr Abstand vom Maschinengestell 10 sich verändert. Auch eine Verfahrbarkeit der Biegeköpfe 11,12 in Querrichtung, also parallel zu der Seite des Maschinengestells, an der sie befestigt sind, ist möglich.Furthermore, the bending heads can also be movable in the longitudinal direction, their distance from the
In Fig. 1 sind die beiden Biegeköpfe 11,12 in der jeweiligen Rohraufnahmeposition dargestellt, wobei die Schwenkarme 15 gegeneinander gerichtet sind. Die Biegeköpfe sind also zueinander spiegelbildlich ausgebildet. Alternativ besteht auch die Möglichkeit, beide Biegeköpfe einander gleich zu machen.In Fig. 1, the two
Da die Radien der Biegeschablonen 14 die Rohrkrümmung bestimmen und da die Biegerillen an den Rohrdurchmesser angepaßt sind, können die Biegeschablonen 14 leicht ausgewechselt werden, ebenso wie die Spannbacken 16.Since the radii of the
Auf dem Maschinengestell 10 ist die Rohrhaltevorrichtung 25 auf einem Kreuzschlitten 26 vorgesehen. Der Kreuzschlitten 26 besteht aus einem Querschlitten 27, der in Querrichtung des Maschinengestells 10 entlang Führungsschienen 28 verfahrbar ist, und einem Längsschlitten 29, der auf dem Querschlitten entlang Führungsschienen 30 verfahrbar ist. Vorzugsweise ist der Querschlitten 27 oder der Längsschlitten 29 außerdem in der Höhe verfahrbar. Der Längsschlitten 29 trägt die Rohrhaltevorrichtung 25, in die das ungebogene Rohr 17 eingespannt wird und die um die Längsachse des Rohres drehbar ist.The
Als Längsrichtung ist die Achsrichtung der Rohrhaltevorrichtung 25 bezeichnet und als Querrichtung die hierzu rechtwinklig verlaufende Richtung.The longitudinal direction is the axial direction of the
An dem Kreuzschlitten 26 ist ein Dornrückzugszylinder 31 vorgesehen, der einen Dorn 32 trägt, welcher durch die Rohrhaltevorrichtung 25 hindurchgeht und den nicht zu biegenden Teil des Rohres von innen her abstützt.On the
Beim Betrieb der Rohrbiegemaschine wird der Längsschlitten 29 in die rückwärtige Endposition gefahren. Dann wird das Rohr in die Rohrhaltevorrichtung 25 eingespannt. Das Rohr 17 wird durch Bewegen des Längsschlittens 29 und des Querschlittens 27 seitlich an die Biegeschablone 14 des Biegekopfes 12 angelegt, während die Spannbacke 26 und die Gleitschiene 19 sich in der Rückzugsposition befinden. Danach werden die Spannbacke 16 und die Gleitschiene 19 an das Rohr 17 herangeschoben, so daß das Rohr zwischen Biegeschablone 14 und Spannbacke 16 geklemmt wird. Dann werden der Schwenkarm 15 und die Biegeschablone 14 um den Biegewinkel herumgeschwenkt, so daß das Rohr 17 gebogen wird. Da das Rohr hierbei nachgezogen wird, wird der Längsschlitten 19 in Längsrichtung vorgeschoben. Dann werden die Spannbacke 16 und die Gleitschiene 19 vom Rohr abgezogen und beide Biegeköpfe 11 und 12 werden abgesenkt. Der Kreuzschlitten 26 wird in Querrichtung verfahren, um das vorgebogene Rohr an dem Biegekopf 11 zu positionieren. Der Längsschlitten 29 wird vorgefahren, um den nun zu biegenden Rohrabschnitt in die Biegeposition zu bringen. Dann wird der Biegekopf 11 hochgefahren und das Rohr wird zwischen Biegeschablone 14 und Spannbacke 16 des Biegekopfes 11 eingespannt. Danach erfolgt der Biegevorgang an dem Biegekopf 11 durch gleichzeitiges Drehen der Biegeschablone 14 und Verschwenken des Schwenkarms 15.When the pipe bending machine is in operation, the
Während des zweiten Biegevorganges hält die Gleitschiene 19 des Biegekopfes 11 das Rohr fest, so daß das Rohr von der Rohrhaltevorrichtung 25 bereits freigegeben werden kann und der Kreuzschlitten 26 in die Ausgangsposition zurückfährt, um ein neues ungebogenes Rohr aufzunehmen.During the second bending process, the
Fig. 2 zeigt ein gebogenes Rohr, das mit der Doppelkopf-Rohrbiegemaschine nach Fig. 1 hergestellt werden kann. Dieses Rohr weist mehrere Biegungen in unterschiedlichen Raumebenen auf, wobei die einzelnen Rohrbiegungen unterschiedliche Krümmungsradien haben. Die Raumebene, in der die Biegung erfolgt, wird durch Drehen der Rohrhaltevorrichtung 25 um ihre Längsachse herum eingestellt.Fig. 2 shows a bent tube that can be manufactured with the double-head tube bending machine according to Fig. 1. This tube has several bends in different spatial levels, the individual tube bends having different radii of curvature. The spatial plane in which the bend takes place is set by rotating the
Claims (8)
dadurch gekennzeichnet,
daß auf dem Maschinengestell (10) eine einzige Rohrhaltevorrichtung (25) vorgesehen ist, deren Längsachse quer durch diejenige Ebene hindurchgeht, in der die Achsen der Biegeschablonen (14) liegen, und daß die Rohrhaltevorrichtung (25) auf einem quer zu der Längsachse verfahrbaren Querschlitten (27) angeordnet ist.Double-head pipe bending machine with a machine frame (10) which carries two cantilever-like bending heads (11, 12), each of which has a rotatable bending template (14) and a swivel arm (15) with a clamping jaw (16) which interacts with the bending template (14) ,
characterized,
that a single pipe holding device (25) is provided on the machine frame (10), the longitudinal axis of which extends transversely through the plane in which the axes of the bending templates (14) lie, and that the pipe holding device (25) is arranged on a cross slide which can be moved transversely to the longitudinal axis (27) is arranged.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4335901A DE4335901A1 (en) | 1993-10-21 | 1993-10-21 | Double-head pipe bending machine |
| DE4335901 | 1993-10-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0649688A1 true EP0649688A1 (en) | 1995-04-26 |
| EP0649688B1 EP0649688B1 (en) | 1998-02-25 |
Family
ID=6500663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94114929A Expired - Lifetime EP0649688B1 (en) | 1993-10-21 | 1994-09-22 | Dual head tube bender |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5499522A (en) |
| EP (1) | EP0649688B1 (en) |
| AT (1) | ATE163374T1 (en) |
| DE (2) | DE4335901A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0990471A1 (en) * | 1998-09-30 | 2000-04-05 | FABBRICA MACCHINE CURVATUBI CRIPPA AGOSTINO S.p.A. | Bending machine |
| WO2000021697A1 (en) * | 1998-10-14 | 2000-04-20 | Rosenberger Automationstechnik Gmbh | Method for bending pipes |
| EP1036606A1 (en) * | 1999-03-17 | 2000-09-20 | Rasi Maschinenbau Und -Handels Gmbh | Bending machine, in particular one with a mandrel |
| EP1219363A2 (en) * | 2000-12-25 | 2002-07-03 | NHK Spring Co., Ltd. | Bending apparatus for a long material |
| EP2177287A3 (en) * | 2008-10-17 | 2011-05-11 | WAFIOS Aktiengesellschaft | Support split assembly for gliding side supports of rod and tube-shape workpieces on bending machines |
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| KR0182069B1 (en) * | 1995-06-22 | 1999-04-01 | 송병준 | Bent-up system of cutting blade |
| US6260395B1 (en) * | 1996-03-05 | 2001-07-17 | Adaptive Motion Control Systems, Inc. | Vertically oriented apparatus for bending tubing, and method of using same |
| JP3716949B2 (en) * | 1996-05-17 | 2005-11-16 | 臼井国際産業株式会社 | Multiple pipe bending machine |
| US6038903A (en) * | 1998-03-09 | 2000-03-21 | Eaton Leonard, Inc. | Dual headed bending machine |
| DE50100461D1 (en) * | 2001-01-30 | 2003-09-11 | Blm Spa | Machine for bending strand-like material, such as pipes, bars, profiles or metal wire |
| DE10130937C1 (en) | 2001-06-27 | 2003-01-30 | Fraunhofer Ges Forschung | Method and device for determining the spatial geometry of a curved extruded profile |
| FR2833868B1 (en) * | 2001-12-20 | 2004-03-05 | Silfax | TUBE BENDING MACHINE AND ITS BENDING DEVICE ON THE LEFT AND / OR RIGHT |
| FR2841162B1 (en) * | 2002-06-25 | 2005-01-14 | Silfax | REGULATORY SUPPORT FOR TUBE BENDING MACHINE |
| US7021102B2 (en) * | 2003-03-15 | 2006-04-04 | Trumpf Rohrtechnik Gmbh + Co. Kg | Bending machine with bending tools on opposite sides of a tool platen |
| GR1005871B (en) * | 2006-05-04 | 2008-04-15 | Method and mechanism for producing three-dimensional clips. | |
| US7254972B1 (en) * | 2006-06-28 | 2007-08-14 | Chia Sheng Machinery Co., Ltd. | Moving mold mechanism of a pipe bending machine |
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| CN104765320A (en) * | 2015-02-05 | 2015-07-08 | 珠海格力电器股份有限公司 | Automatic pipe bender and control method and device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2488896A (en) * | 1946-06-14 | 1949-11-22 | Charles J Bertolini | Dual pivoted bender for simultaneously bending two parallel lengths of metal tubing |
| US4843859A (en) * | 1987-07-14 | 1989-07-04 | Chiyoda Kogyo Co., Ltd. | Pipe bender |
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| US4313324A (en) * | 1979-04-25 | 1982-02-02 | Eaton-Leonard Corporation | Reversible bending machine |
| US4485658A (en) * | 1983-05-31 | 1984-12-04 | Stewart A K | Carriage assembly for a tube bending machine |
| JPS60255722A (en) * | 1984-05-30 | 1985-12-17 | Otsuka Pharmaceut Factory Inc | Amino acid transfusion for diabetes |
| US4804077A (en) * | 1987-05-29 | 1989-02-14 | Westinghouse Electric Corp. | Tube end processing system |
-
1993
- 1993-10-21 DE DE4335901A patent/DE4335901A1/en not_active Withdrawn
-
1994
- 1994-08-19 US US08/292,194 patent/US5499522A/en not_active Expired - Lifetime
- 1994-09-22 AT AT94114929T patent/ATE163374T1/en not_active IP Right Cessation
- 1994-09-22 DE DE59405297T patent/DE59405297D1/en not_active Expired - Lifetime
- 1994-09-22 EP EP94114929A patent/EP0649688B1/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2488896A (en) * | 1946-06-14 | 1949-11-22 | Charles J Bertolini | Dual pivoted bender for simultaneously bending two parallel lengths of metal tubing |
| US4843859A (en) * | 1987-07-14 | 1989-07-04 | Chiyoda Kogyo Co., Ltd. | Pipe bender |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0990471A1 (en) * | 1998-09-30 | 2000-04-05 | FABBRICA MACCHINE CURVATUBI CRIPPA AGOSTINO S.p.A. | Bending machine |
| WO2000021697A1 (en) * | 1998-10-14 | 2000-04-20 | Rosenberger Automationstechnik Gmbh | Method for bending pipes |
| EP1036606A1 (en) * | 1999-03-17 | 2000-09-20 | Rasi Maschinenbau Und -Handels Gmbh | Bending machine, in particular one with a mandrel |
| EP1219363A2 (en) * | 2000-12-25 | 2002-07-03 | NHK Spring Co., Ltd. | Bending apparatus for a long material |
| EP1219363A3 (en) * | 2000-12-25 | 2003-11-19 | NHK Spring Co., Ltd. | Bending apparatus for a long material |
| US6711927B2 (en) | 2000-12-25 | 2004-03-30 | Nhk Springs Co., Ltd. | Bending apparatus for a long material |
| EP2177287A3 (en) * | 2008-10-17 | 2011-05-11 | WAFIOS Aktiengesellschaft | Support split assembly for gliding side supports of rod and tube-shape workpieces on bending machines |
| US8359896B2 (en) | 2008-10-17 | 2013-01-29 | Wafios Aktiengesellschaft | Support jaw arrangement for sliding lateral support of rod-shaped and tubular workpieces in bending machines |
| CN109277443A (en) * | 2018-11-28 | 2019-01-29 | 安徽德系重工科技有限公司 | A kind of three dimensional curvature bending machine and its application method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59405297D1 (en) | 1998-04-02 |
| ATE163374T1 (en) | 1998-03-15 |
| DE4335901A1 (en) | 1995-04-27 |
| US5499522A (en) | 1996-03-19 |
| EP0649688B1 (en) | 1998-02-25 |
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