EP1932603B1 - Pipe bending machine for manufacturing meandering pipes and method for manufacturing meandering pipes - Google Patents
Pipe bending machine for manufacturing meandering pipes and method for manufacturing meandering pipes Download PDFInfo
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- EP1932603B1 EP1932603B1 EP06025676A EP06025676A EP1932603B1 EP 1932603 B1 EP1932603 B1 EP 1932603B1 EP 06025676 A EP06025676 A EP 06025676A EP 06025676 A EP06025676 A EP 06025676A EP 1932603 B1 EP1932603 B1 EP 1932603B1
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- bending
- pipe
- pipe bending
- drive train
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- 238000005452 bending Methods 0.000 title claims abstract description 165
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 8
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000004429 Calibre Substances 0.000 claims 2
- 230000007935 neutral effect Effects 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
-
- 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
Definitions
- the invention relates to a pipe bending machine for meandering pipe courses, as used for example in the field of solar thermal energy as sun-irradiated, by a fluid to be heated by flowing Rohrmeander.
- Other applications include underfloor heating, cooling ceilings or heat exchange registers.
- Such tube bending machines usually have two to the tube caliber, i. the Rohrau . mismesser substantially adapted pipe bending segments, which are free to pivot relative to each other while leaving a bending die and specify the bending profile to be produced.
- FIG. 7 On the market, a generic pipe bending machine is known as in FIG. 7 is shown as prior art.
- this known pipe bending machine is driven by a timing belt, not shown, long-toothed pivot pin used as the drive means 14 ', in which a pneumatically adjustable locking pin 15 'is mounted coaxially displaceable.
- One with the drive means 14 'rotatably connected pivot shaft 14 A' is designed as a rectangular block and also penetrated by the locking pin 15 '.
- the pivot shaft 14A ' together with a guide housing 17', a bed, which a lateral, ie transversely oriented to the pivot shaft displacement (double arrow D) 'of the pivot shaft 14A' together with the drive means 14 'with the aid of a guide slot 17C' allows.
- the rotational drive force (double arrow E ') on the guide housing 17'. transferred, so that the entire guide housing 17 'is pivoted about the respective pivot axis about the respective drive axis.
- the pivot shaft 14A ' can be locked to a base plate 17A' of the guide housing 17 'by the locking bolt 15' in one or the other sliding position, so that during the bending process no displacement between the guide housing 17 'and the pivot shaft 14A' can take place.
- the DE 22 36 898 A1 describes a generic tube bending machine in which the feature is realized, according to which each tube bending segment is provided with a separate drive train.
- the invention has for its object to improve the bending behavior in a relatively simple construction of a generic pipe bending machine.
- This object is achieved by a pipe bending machine having the features of claim 1 and by a method having the features of claim 10. Accordingly, it is provided in terms of the tube bending machine in the core that the pivot axes of the drive means each Rohrbiegesegmentes are arranged in the zero position coaxial with the bending radius of the other Rohrbiegesegmehtes and the coaxiality is left during each bending cut.
- the tube bending machine endlessly supplied, in itself straight tube feed strand is bendable once in a right bend and once in a left turn around the desired angle.
- This angle is usually 180 °, so that the highest possible pipe density per clamped pipe surface is achieved.
- the driven pivot axes of the two tube bending segments rotate in opposite directions during tube bending, wherein the one tube bending segment is in each case in its stationary to the drive shaft of the pivoting tube bending segment in a stationary, coaxial idle state. After each bending step, the previously pivoted tube bending segment is pivoted back to its zero position, the tube register preferably not displaced.
- a coaxial with him holding pin is provided on the drive side for each tube bending segment.
- the pipe holding pins of both pipe bending segments are connected by a respective pivotally connected to the pipe holding pin spacer element.
- first drive device between its pivot shaft and the retaining pin of the first pipe bending element has a rigid first pivot arm, as an optimal pivotal force transmission is achieved.
- the second drive device has a rigid second pivot arm between its pivot shaft and the retaining pin of the second pipe bending element, which is in particular rigidly connected to the pivot shaft of the second drive device via a cranking element, this results in a low-loss pivoting force transmission.
- the second pivot arm has a recess for pivoting in and out of the first holding pin of the first pipe bending element, then a very small, extremely stable pipe bending head can be realized thereby.
- a further disrupttechniksverêtung the pipe bending is achieved in that the pivot shafts of both pipe bending elements are pivotally mounted in a shaft holding body. This may include a distance variability of the two drive shafts
- the first pivot arm has a recess for pivoting in and out of the Verkopfungsijns the second drive means.
- the, z. B. when wearing the pipe bending elements or when changing to other pipe diameter or bending radii to be bent is required to simplify, consisting of two coupling points separation point between the pivot shafts, preferably the shaft holding body and the Schwenkkarmen provided.
- a pipe straight holder allows a targeted feeding of the pipe feed strand to the bending die.
- a distance adjuster for the pivot shafts allows a centering of the bending die on the exit point of the pipe straight holder and thus a Rohrbiege37 improving adjustment.
- the object with the features of claim 10 is achieved. Accordingly, it is provided to pivot the two pipe bending segments starting from a pipe feed aligned to the zero position alternately to the other pipe bending segment under bending the pipe and after pivoting back (in the free path) of the initially bent under bending pipe bending segment pipe over the pipe feed for the Next advance bending step sufficiently far and then to pivot the other pipe bending segment to the one pipe bending segment with simultaneous pipe bending back and then foundedzuschwenken back in the free path and to repeat this process for the production of further Rohrmeander.
- a first pivot shaft 14A which is rotatable via the drive in an angle range between usually 0 ° and approximately 270 ° in both directions of rotation, is rotatably mounted in a shaft holding body 26 - as well as the drive train B, the pivot shaft 14B.
- Spacers 26A, 26B allow the lateral spacing of the parallel aligned ones To change the pivot shafts 14A / 14B, be it for adjustment or for bending radius adjustment.
- each drive train at a coupling point 24A and 24B is separable, so that the entire underlying bending head of the pipe bending machine can be replaced with another. This is required if the tube bending radii are to change.
- the pivot shaft 14A is closed, e.g. As shown approximately at right angles to a pivot arm 20A, which rotatably with the pivot shaft 14A, optionally separated as an interface, and is connected to a recess 20A 'to release movement space for the yet to be explained Verkröpfungselement 22.
- a retaining pin 16A At the free end of the pivot arm 20A is connected approximately at right angles and rotatably connected to the pivot arm 20A, a retaining pin 16A, softer penetrates a spacer 18 in rotatable form and carries at its free end a first tube bending segment 12A.
- the retaining pin 16A may be rotatably attached to the free end of the pivot arm 20A and the retaining pin 16A rotatably or rotatably support the first tube bending segment 12A at its free end.
- the first (and also the second) tube bending segment 12A, 12B consist in the illustrated embodiment of a circular disc, each with a radially outer circumferential groove whose cross section corresponds in a known manner to be bent tube half diameter approximately.
- the second drive train B is constructed, wherein the crank shaft 14B first an offset 22 connects and leave the recess 20B 'of the subsequent pivot arm 20B space for the movement of the holding pin 16A of the drive train A.
- the pivot shaft 14A of the drive train A and the retaining pin 16B of the drive train B are in the in Fig. 1 shown zero position of the pipe bending machine coaxial arranged. The same applies to the pivot shaft 14B of the drive train B and the holding pin 16A of the drive train A.
- the operation is the following:
- the drive train B becomes active, wherein the drive device 14 rotates the pivot shaft 14B by, for example, 180 °.
- the Verkröpfungselement 22 moves into the recess 20A 'and the retaining pin 16B pivots the spacer member 18 together with the Rohrbiegesegmentes 12B in the counterclockwise direction by 180 ° around the Rohrbiegesegment 12A around and thus generates a 180 ° bend of the tube.
- the strand B pivots back by the same angle until the tube bending segment 12B has returned to its illustrated zero position when viewed from above.
- the tube to be bent can be further advanced through the bending die 12. This usually happens without rotation about the tube axis, but in principle can also be done with rotation about the tube axis.
- another bending process in particular a right bend can be performed.
- the drive device 14 pivots the pivot shaft 14A by a predetermined angle of, for example, 180 ° in the clockwise direction seen from above.
- the retaining pin 16A pivots the spacer element 18 together with the tube bending segment 12B around the second tube bending segment 12B.
- the drive train A travels in the free travel again by the bending angle in its zero position shown in the drawing. This completes a complete double bend cycle to produce a meander. This can be followed by further bending cycles in any way.
- FIGS. 1 to 5 illustrate the in FIG. 6 illustrated device in a practical embodiment.
- FIG. 1 illustrates the state of the pipe bending machine before the start of manufacturing a pipe mandrel 10 (see FIG. Fig. 3 ), wherein the bendable, in the direction of arrow C by a Rohrgeradehalter 28 displaceable tube is advanced as required by the bending die 12.
- FIG. 2 It can be seen how the tube bending segment 12B, starting from the in FIG. 1 shown zero position, in a bent by 180 ° bending position (in the drawing in the clockwise direction) is pivoted about the remaining in position other tube bending segment 12A and thus bent the tube to be bent around the tube bending segment 12A according to the predetermined bending contour by 180 ° ,
- FIG. 4 It is particularly clear how the two drive units 14 of the drive train A and B with respect to the shaft holding body 26 centered by Abstandversteller 26 A, 26 B with respect to the pipe straight holder 28 and can be adjusted in terms of spacing to produce larger or smaller Rohrbieger segments with other Rohrbiegesegmenten.
- FIG. 5 and 6 shows, inter alia, how a tool change can take place at the coupling points 24A, 24B.
- the pivot arms 20A, 20B of the pivot shafts 14A, 14B of the two drive trains A and B are separated.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
Die Erfindung betrifft eine Rohrbiegemaschine für meandrierende Rohrverläufe, wie sie zum Beispiel im Bereich der Solar-Thermie als sonnenbestrahlte, von einem aufzuheizenden Fluid durchflossene Rohrmeander verwendet werden. Andere Anwendungsgebiete sind Fußbodenheizungen, Kühldecken oder Wärmeaustauschregister. Derartige Rohrbiegemaschinen weisen in der Regel zwei an das Rohrkaliber, d.h. den Rohrau-ßendurchmesser im wesentlichen angepasste Rohrbiegesegmente, welche unter Freilassen einer Biegematrize relativ zu einander verschwenkbar sind und das herzustellende Biegeprofil vorgeben.The invention relates to a pipe bending machine for meandering pipe courses, as used for example in the field of solar thermal energy as sun-irradiated, by a fluid to be heated by flowing Rohrmeander. Other applications include underfloor heating, cooling ceilings or heat exchange registers. Such tube bending machines usually have two to the tube caliber, i. the Rohrau ßendurchmesser substantially adapted pipe bending segments, which are free to pivot relative to each other while leaving a bending die and specify the bending profile to be produced.
Auf dem Markt ist eine gattungsgemäße Rohrbiegemaschine bekannt, wie sie in
Um eine Rohrbiegung mit entgegengesetztem Drehsinn zum Erzeugen einer meandrierenden Rohrmeander herzustellen, wird die vorbeschriebene Arretierung aufgehoben und der gesamte Antrieb 14' mit seiner Schwenkwelle 14A' bezüglich des Führungsgehäuses 17' quer verschoben und in der zweiten, nunmehr mit dem anderen Rohrbiegesegment koaxialen Arbeitsposition erneut verriegelt. - Diese bekannte Rohrbiegemaschine ist entsprechend aufwendig in der Handhabung und wegen des notwendigen Schiebespiels nicht allzu präzise und weniger robust wie dies zu wünschen wäre.In order to produce a pipe bend with opposite direction of rotation to produce a meandering Rohrmeander, the above lock is released and the entire drive 14 'with its
Die
Der Erfindung liegt die Aufgabe zugrunde, bei einem vergleichsweise einfachen Aufbau einer gattungsgemäßen Rohrbiegemaschine das Biegeverhalten zu verbessern. Insbesondere ist es erwünscht, größere Maßhaltigkeit und geringere Anfälligkeit der Rohrbiegemaschine zu erreichen. Diese Aufgabe wird durch eine Rohrbiegemaschine mit den Merkmalen des Anspruchs 1 sowie durch ein Verfahren mit den Merkmalen des Anspruchs 10 gelöst. Demnach ist hinsichtlich der Rohrbiegemaschine im Kern vorgesehen, dass die Schwenkachsen der Antriebseinrichtungen jedes Rohrbiegesegmentes in Null-Stellung koaxial zum Biegeradius des jeweils anderen Rohrbiegesegmehtes angeordnet sind und die Koaxialität während jedes Biegeschnittes verlassen wird. Auf diese Weise ist es möglich, dass der der Rohrbiegemaschine endlos zugeführte, in sich gerade Rohrspeisestrang einmal in einer Rechtsbiegung und einmal in einer Linksbiegung um den gewünschten Winkel biegbar ist. Dieser Winkel liegt in der Regel bei 180°, so dass eine möglichst hohe Rohrdichte pro aufgespannter Rohrfläche erzielt wird. Demzufolge drehen sich die angetriebenen Schwenkachsen der beiden Rohrbiegesegmente beim Rohrbiegen gegenläufig, wobei sich das eine Rohrbiegesegment jeweils in seiner zur Antriebswelle des in Verschwenken begriffenen Rohrbiegesegmentes in einem stationären, koaxialen Ruhezustand befindet. Nach jedem Biegeschritt wird das zuvor verschwenkte Rohrbiegesegment in seine Null-Stellung zurückverschwenkt, wobei das Rohrregister sich vorzugsweise nicht verlagert. Auf diese Weise kann nach diesem Rückschwenken ein vorgebbarer Längenabschnitt des Rohres durch die Biegematrize gerade hindurch geschoben werden, bis der gerade verlaufende Teil der Registerlänge samt einer Bogenlänge nachgeführt ist. Erst dann beginnt ein neuer Rohrbiegeschritt in die zur ersten Biegerichtung entgegengesetzte zweite Biegerichtung. Bei jedem Biegeschritt wird das gerade Speisestück des noch nicht gebogenen Rohres in Position gehalten. Dies hat zur Folge, dass der Anfang des zu biegenden Rohrregisters bzw. das gesamte bereits gebogene Rohrregister um den Biegewinkel auf seiner Unter lage verschwenkt wird. Letzteres ist gebräuchlich und kann durch einen Schwenktisch erleichtert werden.The invention has for its object to improve the bending behavior in a relatively simple construction of a generic pipe bending machine. In particular, it is desirable to achieve greater dimensional accuracy and less susceptibility of the tube bending machine. This object is achieved by a pipe bending machine having the features of claim 1 and by a method having the features of
Um jedes Rohrbiegesegment auf einfache Weise mit seinem zugehörigen Schwenkantrieb auf einfache Weise verbinden zu können, ist für jedes Rohrbiegesegment ein mit ihm koaxialer Haltezapfen antriebsseitig vorgesehen. Um die Maßhaltigkeit der zu biegenden Rohrregister zu verbessern, sind die Rohrhaltezapfen beider Rohrbiegesegmente durch ein mit den Rohrhaltezapfen jeweils schwenkbar verbundenes Abstandshalteelement verbunden.In order to easily connect each tube bending segment with its associated rotary actuator, a coaxial with him holding pin is provided on the drive side for each tube bending segment. In order to improve the dimensional accuracy of the pipe register to be bent, the pipe holding pins of both pipe bending segments are connected by a respective pivotally connected to the pipe holding pin spacer element.
Wenn die erste Antriebseinrichtung zwischen Ihrer Schwenkwelle und dem Haltezapfen des ersten Rohrbiegeelementes einen starren ersten Schwenkarm aufweist, so wird dadurch eine optimale Schwenkkraftübertragung erreicht.If the first drive device between its pivot shaft and the retaining pin of the first pipe bending element has a rigid first pivot arm, as an optimal pivotal force transmission is achieved.
Wenn die zweite Antriebseinrichtung ein zwischen seiner Schwenkwelle und dem Haltezapfen des zweiten Rohrbiegeelementes einen starren zweiten Schwenkarm aufweist, der über ein Verkröpfungselement mit der Schwenkwelle der zweiten Antriebseinrichung, insbesondere starr verbunden ist, so wird dadurch eine verlustarme Schwenkkraftübertragung erzielt.If the second drive device has a rigid second pivot arm between its pivot shaft and the retaining pin of the second pipe bending element, which is in particular rigidly connected to the pivot shaft of the second drive device via a cranking element, this results in a low-loss pivoting force transmission.
Wenn der zweite Schwenkarm eine Aussparung zum Hinein- und Herausschwenken des ersten Haltezapfens des ersten Rohrbiegeelementes aufweist, so kann dadurch ein sehr klein bauender, äußerst stabiler Rohrbiegekopf verwirklicht werden.If the second pivot arm has a recess for pivoting in and out of the first holding pin of the first pipe bending element, then a very small, extremely stable pipe bending head can be realized thereby.
Eine weitere Maßhaltigkeitsverbesserung des Rohrbiegens wird dadurch erreicht, dass die Schwenkwellen beider Rohrbiegeelemente in einem Wellenhaltekörper schwenkgelagert sind. Dieser kann eine Abstandsveränderbarkeit der beiden Antriebswellen beinhaltenA further Maßhaltigkeitsverbesserung the pipe bending is achieved in that the pivot shafts of both pipe bending elements are pivotally mounted in a shaft holding body. This may include a distance variability of the two drive shafts
Das Gleiche gilt, wenn der erste Schwenkarm eine Aussparung zum Hinein- und Herausschwenken des Verkopfungselementes der zweiten Antriebseinrichtung aufweist.The same applies if the first pivot arm has a recess for pivoting in and out of the Verkopfungselementes the second drive means.
Um den Werkzeugwechsel zu vereinfachen, der, z. B. beim Verschleiß der Rohrbiegeelemente oder beim Wechsel auf andere zu biegende Rohrdurchmesser oder Biegeradien erforderlich ist, zu vereinfachen, ist eine aus zwei Kupplungsstellen bestehende Trennstelle zwischen den Schwenkwellen, vorzugsweise dem Wellenhaltekörper und den Schwenkkarmen vorgesehen.To simplify the tool change, the, z. B. when wearing the pipe bending elements or when changing to other pipe diameter or bending radii to be bent is required to simplify, consisting of two coupling points separation point between the pivot shafts, preferably the shaft holding body and the Schwenkkarmen provided.
Ein Rohrgeradehalter gestattet eine gezielte Zuführung des Rohrspeisestranges zur Biegematrize.A pipe straight holder allows a targeted feeding of the pipe feed strand to the bending die.
Ein Abstandsversteller für die Schwenkwellen gestattet eine Zentrierung der Biegematrize auf die Austrittsstelle des Rohrgeradehalters und somit eine die Rohrbiegequalität verbessernde Justage.A distance adjuster for the pivot shafts allows a centering of the bending die on the exit point of the pipe straight holder and thus a Rohrbiegequalität improving adjustment.
Hinsichtlich eines Verfahrens zum Herstellen von meandrierenden Rohrverläufen wird die Aufgabe mit den Merkmalen des Anspruchs 10 gelöst. Demnach ist vorgesehen, die beiden Rohrbiegesegmente ausgehend von einer auf die Rohrspeisestelle ausgerichtete Null-Stellung wechselseitig um das jeweils andere Rohrbiegesegment unter Biegen des Rohres zu verschwenken und nach Rückschwenken (im Leerweg) des zunächst unter Biegen hin verschwenkten Rohrbiegesegmentes das Rohr über die Rohrspeisestelle für den nächsten Biegeschritt ausreichend weit vorzuschieben und nachfolgend das andere Rohrbiegesegment um das eine Rohrbiegesegment unter gleichzeitigem Rohrbiegen hin zu verschwenken und anschließend wieder im Leerweg zurückzuschwenken und diesen Vorgang zum Herstellen weiterer Rohrmeander zu wiederholen.With regard to a method for producing meandering pipe runs, the object with the features of
Die vorgenannten sowie die beanspruchten und in den Ausführungsbeispielen beschriebenen erfindungsgemäß zu verwendenden Bauteile unterliegen in ihrer Größe, Formgestaltung, Materialauswahl und technischen Konzeption keinen besonderen Ausnahmebedingungen, so dass die in dem Anwendungsgebiet bekannten Auswahlkriterien uneingeschränkt Anwendung finden können.The above-mentioned and the claimed components to be used according to the invention described in the exemplary embodiments are not subject to special conditions of size, shape, material selection and technical design, so that the selection criteria known in the field of application can be used without restriction.
Weitere Einzelheiten, Merkmale und Vorteile des Gegenstandes der Erfindung ergeben sich aus den Unteransprüchen, sowie aus der nachfolgenden Beschreibung der zugehörigen Zeichnung und Tabelle, in der - beispielhaft - ein Ausführungsbeispiel einer Rohrbiegemaschine dargestellt ist.Further details, features and advantages of the subject matter of the invention will become apparent from the dependent claims, as well as from the following description of the accompanying drawings and table, in which - by way of example - an embodiment of a pipe bending machine is shown.
In der Zeichnung zeigen
- Fig. 1
- eine Rohrbiegemaschine in Ansicht von unten in Null-Stellung vor dem Biegen;
- Fig. 2
- dieselbe Rohrbiegemaschine in einer Biegestellung nach Vollenden einer Rechtsbiegung;
- Fig. 3
- dieselbe Rohrbiegemaschine in einer zweiten Biegestellung nach Vollenden einer Linksbiegung;
- Fig. 4
- dieselbe Rohrbiegemaschine in perspektivischer Ansicht von unten;
- Fig. 5
- dieselbe Rohrbiegemaschine in Seitenansicht;
- Fig. 6
- eine Prinzipdarstellung der Rohrbiegemaschine sowie
- Fig. 7
- eine Rohrbiegemaschine nach dem Stand der Technik.
- Fig. 1
- a pipe bending machine in bottom view in zero position before bending;
- Fig. 2
- the same tube bending machine in a bending position after completion of a right bend;
- Fig. 3
- the same tube bending machine in a second bending position after completion of a left bend;
- Fig. 4
- the same pipe bending machine in a perspective view from below;
- Fig. 5
- the same pipe bending machine in side view;
- Fig. 6
- a schematic diagram of the pipe bending machine as well
- Fig. 7
- a pipe bending machine according to the prior art.
Alle wesentlichen Elemente der Rohrbiegemaschine gehen aus der Prinzipdarstellung der
Auf der der Antriebseinrichtung 14 gegenüberliegenden Seite des Wellenhaltkörpers 26 ist jeder Antriebsstrang an einer Kupplungsstelle 24A bzw. 24B trennbar, so dass der ganze darunter liegende Biegekopf der Rohrbiegemaschine gegen einen anderen ausgetauscht werden kann. Dies ist erforderlich, wenn die Rohrbiegeradien sich ändern sollen.On the opposite side of the
An die Schwenkwelle 14A schließt sich z.B. wie dargestellt in etwa rechtwinklig einen Schwenkarm 20A an, der mit der Schwenkwelle 14A drehfest, als Schnittstelle ggf. trennbar, verbunden ist und eine Aussparung 20A' aufweist, um Bewegungsraum für das noch zu erläuternde Verkröpfungselement 22 freizulassen. Am freien Ende des Schwenkarmes 20A schließt sich etwa rechtwinklig und mit dem Schwenkarm 20A drehfest verbunden ein Haltezapfen 16A an, weicher ein Abstandselement 18 in drehbarer Form durchdringt und an seinem freien Ende ein erstes Rohrbiegesegment 12A trägt. Ebenso kann der Haltezapfen 16A mit dem freien Ende des Schwenkarms 20A drehbar befestigt sein und der Haltezapfen 16A an seinem freien Ende das erste Rohrbiegesegment 12A drehfest oder drehbar tragen. Das erste (und auch das zweite) Rohrbiegesegment 12A, 12B bestehen im dargestellten Ausführungsbeispiel aus einer Kreisscheibe mit je einer radial außen umlaufenden Nut, deren Querschnitt in bekannter Weise dem zu biegenden Rohrhalbdurchmesser in etwa entspricht.The
In ähnlicher Weise ist der zweite Antriebsstrang B aufgebaut, wobei sich an die Schwenkwelle 14B zunächst eine Verkröpfung 22 anschließt und die Aussparung 20B' des sich anschließenden Schwenkarmes 20B Raum für die Bewegung des Haltezapfens 16A des Antriebsstranges A freilassen.Similarly, the second drive train B is constructed, wherein the
Die Schwenkwelle 14A des Antriebsstranges A und der Haltezapfen 16B des Antriebsstranges B sind in den in
Die Funktionsweise ist Folgende:The operation is the following:
Wenn ein durch die Biegematrize 12 ausreichend weit vorgeschobenes zunächst gerades Rohrstück zu einem von oben gesehenen Linksbogen gebogen werden soll, wird der Antriebsstrang B tätig, wobei die Antriebseinrichtung 14 die Schwenkwelle 14B um z.B. 180° verdreht. Dabei verlagert sich das Verkröpfungselement 22 bis in die Aussparung 20A' und der Haltezapfen 16B verschwenkt das Abstandshalteelement 18 samt des Rohrbiegesegmentes 12B im Gegenuhrzeigersinn um 180° um das Rohrbiegesegment 12A herum und erzeugt damit eine 180° Biegung des Rohres. Nachfolgend schwenkt der Strang B wieder um denselben Winkel zurück, bis das Rohrbiegesegment 12B in von oben gesehenen seine dargestellten Null-Stellung zurückgekehrt ist. Danach kann das zu biegende Rohr weiter durch die Biegematrize 12 vorgeschoben werden. Dies geschieht in der Regel ohne Drehung um die Rohrachse, kann grundsätzlich aber auch mit Drehung um die Rohrachse erfolgen. Nachdem das eingespeiste noch gerade Rohr ausreichend weit vorgeschoben ist, kann ein weiterer Biegevorgang, insbesondere eine Rechtsbiegung durchgeführt werden. Hierzu verschwenkt der die Antriebseinrichtung 14, die Schwenkwelle 14A um einen vorgegebenen Winkel von z.B. 180° im von oben gesehenen Uhrzeigersinn. Dadurch verschwenkt der Haltezapfen 16A den das Abstandshalteelement 18 samt des Rohrbiegesegmentes 12B um das zweite Rohrbiegesegment 12B herum. Das dadurch sich erneut verbiegende Rohrende vollzieht diese Schwenkung mit. Im Anschluss an diesen zweiten Biegeschritt fährt der Antriebsstrang A im Leerweg wieder um den Biegewinkel in seinen in der Zeichnung dargestellte Null-Stellung zurück. Damit ist ein vollständiger Doppelbiegezyklus unter Erzeugung eines Meanders abgeschlossen. Hieran können sich weitere Biegezyklen in beliebiger Weise anschließen.If an initially straight piece of pipe, which is sufficiently advanced by the bending die 12, is to be bent to form a left-hand bend, the drive train B becomes active, wherein the
Die
Aus
Nach dem in
Aus
Aus
Während in den Zeichnungen von kreisrunden Rohrbiegesegmenten ausgegangen wird, deren Biegeform und Rohrbiegeradius in der Null-Stellung koaxial zur Schwenkwelle des jeweils anderen Antriebsstranges angeordnet sind, gestattet es die Erfindung grundsätzlich auch, Rohriegesegmente mit anderen Biegeformen und anderer Anordnung der Achse des Rohrbiegradius zu verwirklichen, wenn die beiden Antriebsstränge A, B entsprechend den Merkmalen von den beigefügten Ansprüche verwirklicht sind.While in the drawings of circular tube bending segments is assumed, the bending shape and tube bending radius are arranged in the zero position coaxial with the pivot shaft of the other drive train, the invention basically also allows to realize Rohriegesegmente with other bending shapes and other arrangement of the axis of Rohrbiegradius, when the two drive trains A, B are realized according to the features of the appended claims.
- 1010
- RohrmeanderRohrmeander
- 10A10A
- Biegeprofilbending profile
- 10B10B
- Biegeprofilbending profile
- 1212
- Biegematrizebending die
- 12'12 '
- BiegmatrizeBiegmatrize
- 12A12A
- RohrbiegesegmentPipe bending segment
- 12A'12A '
- RohrbiegesegmentPipe bending segment
- 12B12B
- RohrbiegesegmentTube bending segment
- 12B'12B '
- RohrbiegesegmentPipe bending segment
- 1414
- Antriebseinrichtungdriving means
- 14'14 '
- Antriebseinrichtungdriving means
- 14A14A
- Schwenkwellepivot shaft
- 14A'14A '
- Schwenkwellepivot shaft
- 14B14B
- Schwenkwellepivot shaft
- 15'15 '
- Arretierbolzenlocking pin
- 16A16A
- Haltezapfenretaining pins
- 16A'16A '
- Haltezapfenretaining pins
- 16B16B
- Haltezapfenretaining pins
- 16B'16B '
- Haltezapfenretaining pins
- 17'17 '
- Führungsgehäuseguide housing
- 17A'17A '
- Grundplattebaseplate
- 17B'17B '
- Führungsbohrungenguide bores
- 17C'17C '
- Führungskulisseguide link
- 1818
- AbstandshalteelementSpacer element
- 20A20A
- Schwenkarmswivel arm
- 20A'20A '
- Aussparungrecess
- 20B20B
- Schwenkarmswivel arm
- 20B'20B '
- Aussparungrecess
- 2222
- VerkröpfungselemeritVerkröpfungselemerit
- 24A24A
- Kupplungsstellecoupling site
- 24B24B
- Kupplungsstellecoupling site
- 2626
- WellehaltekörperShaft holding body
- 26A26A
- Abstandsverstellerdistance adjuster
- 26B26B
- Abstandsverstellerdistance adjuster
- 2828
- RohrgeradehalterPipe Corset
- AA
- Antriebsstrangpowertrain
- BB
- Antriebsstrangpowertrain
- CC
- Pfeilarrow
- D'D '
- Doppelpfeil (Verschiebung)Double arrow (shift)
- E'e '
- Doppelpfeil (Drehung)Double arrow (rotation)
- FF
- Doppelpfeil (Verschwenkung)Double arrow (swiveling)
- GG
- Doppelpfeil (Verschwenkung)Double arrow (swiveling)
- RARA
- Biegeradius .Bending radius.
- RBRB
- Biegeradiusbending radius
Claims (10)
- Pipe bending machine for manufacturing meandering pipes (10), comprising at least two pipe bending segments (12A; 12B) which are essentially adapted to the pipe calibre and which can be pivoted relative to one another leaving a bending die (12) free and which define the bending profile (10A, 10B), and comprising a drive apparatus (14) for separate pivoting of both pipe bending segments, wherein each pipe bending segment (12A; 12B) is provided with a separate drive train (A) and (B), characterised in that in a starting position, the axis of the driven pivot shaft (14A) of the first drive train (A) is arranged coaxially with the bending radius (RB) of the second bending segment (12B) and the driven pivot shaft (14B) of the second drive train (B) is arranged coaxially with the bending radius (RA) of the first pipe bending segment (12A), and that the coaxiality of the starting position is removed on every pivoting of one of the pivot shafts (14A, 14B) into a bending position of the respectively pivoted pipe bending segment.
- Pipe bending machine according to claim 1, characterised in that the first drive train (A) comprises a first pivot arm (20A) between its pivot shaft (14A) and a holding peg (16A) of the first pipe bending element (12A), and the second drive train (3) comprises a second pivot arm (20B) connected between a pivot shaft (14B) and a holding peg (16B) of the second pipe bending segment (12B) via a bending element (22) to the second pivot shaft (14B) of the second drive train (B).
- Pipe bending machine according to claim 2, characterised in that the second pivot arm (20B) has a recess (20B') for pivoting in and out of the first holding peg (16A) of the first drive train (A).
- Pipe bending machine according to claim 2 or 3, characterised in that the first pivot arm (20A) has a recess (20A') for pivoting in an out of the bending element (22) of the second drive apparatus.
- Pipe bending machine according to one of the claims 1 to 4, characterised in that each drive train (A; B) has a coupling point (24A; 24B) for tool changing.
- Pipe bending machine according to one of the claims 1 to 8, characterised by a shaft holder body (26) for holding the pivot shafts (14A; 14B) of the drive apparatus (14) spaced apart from one another.
- Pipe bending machine according to one of the claims 1 to 6, characterised by a spacing element (18) connecting the holding pegs (16A; 16B) of the two pipe bending segments (12A; 12B).
- Pipe bending machine according to one of the claims 1 to 9, characterised by a pipe straight-holder (28) for feeding an as yet unbent length of pipe into the bending die (12) of the pipe bending segments (12A; 12B) in their starting position.
- Pipe bending machine according to one of the claims 1 to 10, characterised by a spacing adjuster (26A; 26B) for the drive shafts (14A; 14B).
- Method for manufacturing meandering pipes, comprising at least two pipe bending segments (12A; 12B) which are essentially adapted to the pipe calibre and which can be pivoted relative to one another leaving a bending die (12) free and which define the bending profile 10A, 10B), and comprising a drive apparatus (14) for separate pivoting of both pipe bending segments, wherein each pipe bending segment is optionally pivoted by a separate drive train, characterised in that a coaxiality existing in a starting position between the pivot shafts of the drive trains with the bending radius of the pipe bending segment of the respective other drive train is removed for the respective pivoted pipe bending segment in the bending positions and wherein, alternately, one or the other pipe bending segment is pivoted starting from the starting position oriented towards a pipe feeding site by the drive train associated therewith about the respective other pipe bending segment, thereby bending the pipe, and following pivoting back (along a no-load path) of the pipe bending segment first pivoted with bending of the pipe, the pipe is pushed forward via the pipe feeding site far enough for the next bending step and, subsequently, the other pipe bending segment is pivoted by the drive train associated therewith about the one pipe bending segment, with bending of the pipe, and is then pivoted back (along a no-load path) and these steps are repeated in order to manufacture further pipe meanders if required.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502006002973T DE502006002973D1 (en) | 2006-12-12 | 2006-12-12 | Pipe bending machine for the production of meandering pipe runs and method for producing meandering pipe runs |
EP06025676A EP1932603B1 (en) | 2006-12-12 | 2006-12-12 | Pipe bending machine for manufacturing meandering pipes and method for manufacturing meandering pipes |
AT06025676T ATE423639T1 (en) | 2006-12-12 | 2006-12-12 | TUBE BENDING MACHINE FOR PRODUCING MEANDERING TUBE ROUTES AND METHOD FOR PRODUCING MEANDERING PIPE ROUTES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06025676A EP1932603B1 (en) | 2006-12-12 | 2006-12-12 | Pipe bending machine for manufacturing meandering pipes and method for manufacturing meandering pipes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1932603A1 EP1932603A1 (en) | 2008-06-18 |
EP1932603B1 true EP1932603B1 (en) | 2009-02-25 |
Family
ID=37682889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06025676A Active EP1932603B1 (en) | 2006-12-12 | 2006-12-12 | Pipe bending machine for manufacturing meandering pipes and method for manufacturing meandering pipes |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1932603B1 (en) |
AT (1) | ATE423639T1 (en) |
DE (1) | DE502006002973D1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9296034B2 (en) * | 2011-07-26 | 2016-03-29 | Medtronic Vascular, Inc. | Apparatus and method for forming a wave form for a stent from a wire |
DE102012019183A1 (en) * | 2012-09-28 | 2014-04-03 | Ulrich Zimmer | Device for bending pipe material, particularly brake lines or fuel lines, has hinge bending head pivotally mounted at bending tower and intermediate gear mounted on pivotal receiving lever of hinge bending head |
CN113894190B (en) * | 2021-10-11 | 2024-04-30 | 马鞍山市润通重工科技有限公司 | Large-sleeve pipe bending equipment and implementation method thereof |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2125193A1 (en) * | 1971-02-18 | 1972-09-29 | Gol Sp Kon | Coiled tube mfr - by a high-performance machine employing two drive shafts |
JPS4893571A (en) * | 1972-03-11 | 1973-12-04 | ||
DE2236898A1 (en) | 1972-07-27 | 1974-02-07 | Stiebel Eltron Gmbh & Co Kg | Bending tubes for heat exchangers - using machine with two grooved bending rolls side by side |
DE2918813A1 (en) * | 1979-05-10 | 1980-11-20 | Brueninghaus Gmbh Stahlwerke | Bending machine for metal bars or tubes - has horizontally movable pillars supporting respective anvils on which workpiece is bent via rollers on lever arms |
JPS6160218A (en) * | 1984-08-30 | 1986-03-27 | Sanden Corp | Apparatus for producing zigzag pipe |
FR2685228B1 (en) * | 1991-12-23 | 1995-08-11 | Automation Franc | BENDING MACHINE OF THE ROD, BAR, TUBE, WIRE OR THE LIKE TYPE ELEMENT. |
-
2006
- 2006-12-12 DE DE502006002973T patent/DE502006002973D1/en active Active
- 2006-12-12 AT AT06025676T patent/ATE423639T1/en active
- 2006-12-12 EP EP06025676A patent/EP1932603B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
ATE423639T1 (en) | 2009-03-15 |
DE502006002973D1 (en) | 2009-04-09 |
EP1932603A1 (en) | 2008-06-18 |
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