EP1308222A2 - Tube welding device - Google Patents
Tube welding device Download PDFInfo
- Publication number
- EP1308222A2 EP1308222A2 EP02020730A EP02020730A EP1308222A2 EP 1308222 A2 EP1308222 A2 EP 1308222A2 EP 02020730 A EP02020730 A EP 02020730A EP 02020730 A EP02020730 A EP 02020730A EP 1308222 A2 EP1308222 A2 EP 1308222A2
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- EP
- European Patent Office
- Prior art keywords
- welding device
- pipe welding
- carriage
- slide
- pipe
- 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.)
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- 238000003466 welding Methods 0.000 title claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 12
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
Definitions
- the invention relates to a pipe welding device with which a flat Metal tape formed tube welded at the resulting interface becomes.
- the device has a stationary base plate, a first one Carriage that is in a plane that is perpendicular to the longitudinal axis of the tube, is arranged movably relative to the base plate, one on the first carriage first pressure roller is rotatably arranged, which is formed into a metal strip into a tube leads near the seam, and a movably arranged second carriage, wherein a second pressure roller is rotatably arranged on the second carriage the metal band formed into the tube leads near the seam.
- a large part of the pipes made of metal is made by continuous Longitudinal seam welding.
- a tape is unwound from a coil, formed into a round slotted tube in several roll stands and welded.
- the band edges are on The welding temperature is warmed up and compressed in a welding roll stand that they weld together.
- the welding roll stand has a number to produce a high quality pipe of requirements to be met.
- band edges may only be compressed so far, i.e. H. upset that only the smallest possible amount of material is pressed out of the weld seam becomes. If this quantity is too large, the result is a corresponding one high material loss because of the resulting so-called burr on the weld must be removed again in a further step. on the other hand It must be ensured that the weld seam is free of defects over the entire Cross section manufactured precisely, so the material is welded through.
- a pipe welding device of the type mentioned above must therefore be manufactured of a pipe of high quality various possibilities for setting and Have guidance of the pressure rollers.
- DE-OS 19 23 241 describes a device for continuous longitudinal seam welding known from pipes.
- the arrangement disclosed there is dispensed with however, on special measures to meet the above requirements; this limits the quality of the pipes that can be produced on this device.
- DE 32 12 365 C2 discloses an arrangement of three rollers with which the pipe formed from the metal strip is guided over almost the entire circumference.
- the lower two rollers are slanted here, the upper roller is divided educated.
- the two rolling disks resulting from the upper roller can be pivoted to each other by an adjustable angle.
- the above requirements can also be met with such an arrangement cannot be fully satisfied.
- a pipe welding device of the type mentioned is also from DE-AS 12 89 814 known.
- the welding roller stand has two horizontally arranged ones side pressure rollers and a pair of upper pressure rollers. All roller axes lie in one plane.
- the upper pressure rollers can be used individually as well as synchronously vertical and / or in the same and opposite directions synchronously horizontally be moved to bring the upper pressure rollers into the required position.
- the upper pressure rollers are in slides with vertical and horizontal ones Guides stored, and the adjustment is made by threaded spindles.
- the invention is therefore based on the object of further developing a tube welding device of the type mentioned at the outset in such a way that the requirements mentioned for the production of longitudinal seam tubes can be met with high quality.
- This object is achieved in that the second carriage in a plane that is perpendicular to the longitudinal axis of the tube, relative to the first Carriage is movably arranged, the second carriage on the first Sled is guided.
- the axes of both pressure rollers lie in one common level. Furthermore, the axes of both pressure rollers can face each other arranged vertically pivoted through an angle, e.g. in one Angular range between 10 ° and 45 °.
- At least two additional pressure rollers will be provided, each of which is for the pipe partially include molded metal tape; the axes of the two other pressure rollers preferably run in parallel. The axes of all pressure rollers are advantageous on a common level.
- a structurally simple configuration results if - according to another Training - at least one horizontal one between the base plate and the first slide Guide and at least one vertical guide is arranged with which the first carriage can be moved relative to the base plate.
- Corresponding can be at least one between the first carriage and the second carriage horizontal guide and at least one vertical guide can be arranged with which the second carriage can move relative to the first.
- the movement of the carriage is preferably carried out with linear actuators, in which there is are preferably threaded spindle-nut systems. These can each are driven by a motor gear unit.
- the vertical adjustment at least one of the sledges, preferably the first sled relative to the Base plate, is advantageously carried out via two parallel threaded spindle-nut systems, which ensures that large elements cannot be tilted is.
- the drive of the parallel threaded spindle-nut systems can done by two gears by a common one Motor driven; can be preferred between the two gears Worm gear, a clutch can be arranged.
- adjustment and locking means can be provided with which the respective elements can be adjusted and fixed in relation to each other in their position can.
- This configuration is preferably only between the first carriage and provided second carriage, the adjusting and locking means the two Adjust and fix the position of the slide in the vertical direction to each other.
- Suitable position adjusting and locking means are e.g. an adjustable wedge; this can be connected with displacement means, so that easy positioning of the wedge is possible.
- the displacement means can be a screw exhibit.
- a pipe welding device 1 there is a pipe 2 made of a flat sheet metal strip been formed, resulting in a seam 4 on the tube 2, which on the device 1 is welded.
- the tube 2 runs continuously during the welding process in the direction of the longitudinal axis 3 of the tube 2 through the device 1.
- the pipe welding device 1 has a base plate 5 which is arranged in a stationary manner is.
- a first carriage 6 is arranged on the base plate 5. This is over two horizontal linear guides 16 and two vertical linear guides 17 in two mutually orthogonal directions (horizontal and vertical) relative to Base plate 5 movable.
- Linear motion elements are provided for this, namely a lead screw nut system 20 for the horizontal displacement of the first Carriage 6 relative to the base plate 5 and a threaded spindle-nut system 21 for the corresponding vertical shift.
- These linear actuators 20, 21 are shown only very schematically, because this is in the prior art well known elements. Only with regard to the threaded spindle-nut system 21 is sketched in somewhat more detail that here two parallel threaded spindles 21 are provided, the carriage 6 relative to the base plate 5 vertical move. Tilting of the first carriage 6 is thereby avoided.
- the spindles 21 are driven by two gears 24 and 25, which have a Coupling 26 are interconnected.
- the drive itself is done by a Motor 23, which drives both transmissions 24 and 25.
- a first pressure roller 7 is arranged in the lower region of the first carriage 6. Their axis 10 is rotated by a pivot angle ⁇ relative to the horizontal arranged. The first pressure roller 7 thus rolls in the area of the interface 4 of the Tube 2 to the left of the interface 4 on tube 2, with an exact guidance this angular segment of the tube 2 is ensured.
- first carriage 6 With the first carriage 6 are two horizontal guides 18 and two vertical Connected guides 19, via which a second carriage 8 relative to the first Carriage 6 is movably guided.
- On the second carriage 8 is - similar to the first Pressure roller 7 - a second pressure roller 9 arranged to the right of the interface 4 that this adjacent angular segment of the tube 2 leads exactly.
- the axis 11 the second pressure roller 9 is a mirror image of the axis 10 of the first pressure roller 7 pivoted by the angle ⁇ .
- the movement of the second carriage 8 relative to the first carriage 6 becomes what as far as horizontal movement is concerned - via a threaded spindle-nut system 22 accomplished, the same thing that applies to systems 20 and 21 above.
- the vertical adjustment and locking of the second carriage 8 relative to first carriage 6 is made by means of a wedge 27, the in connection with only very schematically outlined displacement means 28 stands.
- By moving the wedge horizontally e.g. by means of a not shown Screw) can adjust the relative vertical position between the first and second Carriage 6 or 8 can be adjusted and locked.
- the proposed device With the help of the proposed device it is possible, on the basis of am passing tube 2 sensor-determined values, the first and second pressure roller 7 or 9 close to the process, quickly and directly in any position to the pipe 2 and bring them together, causing deviations in the geometry of the pipe can be compensated. This significantly improves the pipe quality.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft eine Rohrschweißvorrichtung, mit der ein aus einem flächigen Metallband geformtes Rohr an der sich ergebenden Nahtstelle verschweißt wird. Die Vorrichtung hat eine ortsfest angeordnete Grundplatte, einen ersten Schlitten, der in einer Ebene, die senkrecht auf der Längsachse des Rohres steht, relativ zur Grundplatte beweglich angeordnet ist, wobei am ersten Schlitten eine erste Druckrolle drehbar angeordnet ist, die das zum Rohr geformte Metallband in der Nähe der Nahtstelle führt, und einen beweglich angeordneten zweiten Schlitten, wobei am zweiten Schlitten eine zweite Druckrolle drehbar angeordnet ist, die das zum Rohr geformte Metallband in der Nähe der Nahtstelle führt.The invention relates to a pipe welding device with which a flat Metal tape formed tube welded at the resulting interface becomes. The device has a stationary base plate, a first one Carriage that is in a plane that is perpendicular to the longitudinal axis of the tube, is arranged movably relative to the base plate, one on the first carriage first pressure roller is rotatably arranged, which is formed into a metal strip into a tube leads near the seam, and a movably arranged second carriage, wherein a second pressure roller is rotatably arranged on the second carriage the metal band formed into the tube leads near the seam.
Ein großer Teil der aus Metall bestehenden Rohre wird durch kontinuierliches Längsnaht-Schweißen hergestellt. Dazu wird ein Band von einem Coil abgewikkelt, in mehreren Walzengerüsten zu einem runden Schlitzrohr eingeformt und verschweißt. Zum Zwecke des Zusammenfügens werden die Bandkanten auf Schweißtemperatur erwärmt und in einem Schweißrollengerüst so zusammengedrückt, dass sie miteinander verschweißen.A large part of the pipes made of metal is made by continuous Longitudinal seam welding. To do this, a tape is unwound from a coil, formed into a round slotted tube in several roll stands and welded. For the purpose of joining, the band edges are on The welding temperature is warmed up and compressed in a welding roll stand that they weld together.
Das Schweißrollengerüst hat zur Fertigung eines Rohres hoher Qualität eine Reihe von Anforderungen zu erfüllen.The welding roll stand has a number to produce a high quality pipe of requirements to be met.
Zunächst muss das Rohr selbst sehr genau geführt werden, um Abweichungen von der idealen Rohrlängsachse zu verhindern. Eine auch nur geringe Abweichung kann einen Versatz der Bandkanten im Bereich der Schweißzone bewirken, was zu erheblichen Qualitätseinbußen führt. First of all, the pipe itself must be guided very precisely to avoid deviations to prevent from the ideal pipe longitudinal axis. A slight deviation can cause an offset of the strip edges in the area of the welding zone, which leads to significant quality losses.
Weiterhin dürfen die Bandkanten nur so weit zusammengedrückt, d. h. gestaucht werden, dass nur eine geringstmögliche Materialmenge aus der Schweißnaht herausgedrückt wird. Ist diese Menge nämlich zu groß, ergibt sich ein entsprechend hoher Materialverlust, weil der sich ergebende sogenannte Grat auf der Schweißnaht in einem weiteren Arbeitsschritt wieder entfernt werden muß. Andererseits muss sichergestellt sein, dass die Schweißnaht ohne Fehler über den gesamten Querschnitt präzise hergestellt, das Material also durchgeschweißt wird.Furthermore, the band edges may only be compressed so far, i.e. H. upset that only the smallest possible amount of material is pressed out of the weld seam becomes. If this quantity is too large, the result is a corresponding one high material loss because of the resulting so-called burr on the weld must be removed again in a further step. on the other hand It must be ensured that the weld seam is free of defects over the entire Cross section manufactured precisely, so the material is welded through.
Für die versatzfreie Führung der Bandkanten kommt erschwerend hinzu, dass unterschiedliche Werkstoffe unterschiedliche Auffederungseigenschaften haben, bei gleichem Rohraußendurchmesser unterschiedliche Wanddicken eingeformt werden müssen und das Bandmaterial ferner Abweichungen vom Sollmaß aufweisen kann (z. B. Wanddickenschwankungen oder eine Säbelform in Längsrichtung).To make sure that the belt edges are guided without offset, this is aggravated by the fact that different materials have different spring properties, different wall thicknesses molded in with the same pipe outer diameter must be and the strip material also show deviations from the nominal size can (e.g. fluctuations in wall thickness or a saber shape in the longitudinal direction).
Eine Rohrschweißvorrichtung der eingangs genannten Art muss daher zur Herstellung eines Rohres hoher Qualität vielfältige Möglichkeiten zur Einstellung und Führung der Druckrollen aufweisen.A pipe welding device of the type mentioned above must therefore be manufactured of a pipe of high quality various possibilities for setting and Have guidance of the pressure rollers.
Aus der DE-OS 19 23 241 ist eine Vorrichtung zum kontinuierlichen Längsnahtschweißen von Rohren bekannt. Die dort offenbarte Anordnung verzichtet jedoch auf spezielle Maßnahmen zur Erfüllung der oben genannten Forderungen; damit ist die Qualität der auf dieser Vorrichtung herstellbaren Rohre begrenzt.DE-OS 19 23 241 describes a device for continuous longitudinal seam welding known from pipes. The arrangement disclosed there is dispensed with however, on special measures to meet the above requirements; this limits the quality of the pipes that can be produced on this device.
Die DE 32 12 365 C2 offenbart eine Anordnung von drei Walzen, mit denen das aus dem Metallband geformte Rohr fast über den gesamten Umfang geführt wird. Die unteren beiden Walzen sind hier schräg gestellt, die obere Walze ist geteilt ausgebildet. Die sich aus der oberen Walze ergebenden beiden Walzscheiben können zueinander um einen einstellbaren Winkel verschwenkt werden. Damit kann die Breite der Mittelnut zwischen den beiden Walzscheiben der oberen Walze in Abhängigkeit von der Wanddicke des geformten Rohres stufenlos eingestellt werden. Allerdings können die obigen Forderungen auch mit einer solchen Anordnung nicht voll befriedigt werden.DE 32 12 365 C2 discloses an arrangement of three rollers with which the pipe formed from the metal strip is guided over almost the entire circumference. The lower two rollers are slanted here, the upper roller is divided educated. The two rolling disks resulting from the upper roller can be pivoted to each other by an adjustable angle. In order to can be the width of the center groove between the two rollers of the top roller infinitely variable depending on the wall thickness of the molded tube become. However, the above requirements can also be met with such an arrangement cannot be fully satisfied.
Eine Rohrschweißvorrichtung der eingangs genannten Art ist auch aus der DE-AS 12 89 814 bekannt. Hier weist das Schweißrollengerüst zwei waagerecht angeordnete seitliche Druckrollen sowie ein Paar obere Druckrollen auf. Alle Rollenachsen liegen in einer Ebene. Die oberen Druckrollen können sowohl einzeln als auch synchron senkrecht und/oder gleich- und gegensinnig synchron waagerecht bewegt werden, um die oberen Druckrollen in die benötigte Position zu bringen. Die oberen Druckrollen sind hierzu in Schlitten mit senkrechten und waagerechten Führungen gelagert, und die Verstellung erfolgt durch Gewindespindeln.A pipe welding device of the type mentioned is also from DE-AS 12 89 814 known. Here the welding roller stand has two horizontally arranged ones side pressure rollers and a pair of upper pressure rollers. All roller axes lie in one plane. The upper pressure rollers can be used individually as well as synchronously vertical and / or in the same and opposite directions synchronously horizontally be moved to bring the upper pressure rollers into the required position. For this purpose, the upper pressure rollers are in slides with vertical and horizontal ones Guides stored, and the adjustment is made by threaded spindles.
All diese vorbekannten Rohrschweißvorrichtungen sind jedoch nicht in ausreichender Weise so verstellbar, dass die oben genannten Anforderungen vollumfänglich erfüllt werden könnten. Weiterhin kann bei den bekannten Ausführungen eine Verstellung nur in recht aufwendiger Weise erfolgen, indem von Hand und nach Lösen von Kupplungen Betätigungselemente bedient werden. Hierdurch ist es nicht möglich, schnell auf sich ändernde Verhältnisse am durchlaufenden Rohr zu reagieren.However, all of these previously known tube welding devices are not sufficient Way adjustable so that the above requirements fully could be fulfilled. Furthermore, in the known designs an adjustment can only be done in a very complex manner by hand and operating elements can be operated after loosening the couplings. This is it is not possible to quickly change conditions on the tube passing through to react.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Rohrschweißvorrichtung der eingangs genannten Art so weiterzuentwickeln, dass die genannten Anforderungen an die Herstellung von Längsnaht-Rohren mit hoher Qualität erfüllt werden können.The invention is therefore based on the object of further developing a tube welding device of the type mentioned at the outset in such a way that the requirements mentioned for the production of longitudinal seam tubes can be met with high quality.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der zweite Schlitten in einer Ebene, die senkrecht auf der Längsachse des Rohres steht, relativ zum ersten Schlitten beweglich angeordnet ist, wobei der zweite Schlitten auf dem ersten Schlitten geführt ist.This object is achieved in that the second carriage in a plane that is perpendicular to the longitudinal axis of the tube, relative to the first Carriage is movably arranged, the second carriage on the first Sled is guided.
Mit dieser Ausgestaltung wird es in vorteilhafter Weise möglich, eine schnelle und einfache exakte Positionierung beider Druckrollen, die in der Nähe der Nahtstelle des Rohres an diesem anliegen und das Rohr führen, vorzunehmen. Damit kann das Rohr ständig und auch bei sich ändernden Parametern sehr genau geführt werden, so dass Abweichungen von der idealen Rohrlängsachse nicht auftreten können. Das hergestellte Rohr weist daher auch keinen Versatz der Bandkanten im Bereich der Schweißzone auf. Ferner lassen sich die Bandkanten während des Schweißvorganges optimal aneinander drücken, so dass Gratbildung vermieden wird. Auf der erfindungsgemäßen Rohrschweißvorrichtung können also Rohre hoher Qualität gefertigt werden.With this configuration, it is advantageously possible for a fast and easy exact positioning of both pressure rollers that are close to the seam of the pipe abut against it and guide the pipe. So that can the pipe is guided constantly and very precisely even with changing parameters so that deviations from the ideal pipe longitudinal axis do not occur can. The pipe produced therefore has no offset of the strip edges in the area of the welding zone. Furthermore, the band edges during the Press the welding process together optimally so that burr formation is avoided becomes. Pipes can therefore be higher on the pipe welding device according to the invention Quality.
Gemäß einer ersten Weiterbildung liegen die Achsen beider Druckrollen in einer gemeinsamen Ebene. Ferner können die Achsen beider Druckrollen gegenüber der Vertikalen um einen Winkel geschwenkt angeordnet werden, z.B. in einem Winkelbereich zwischen 10° und 45°.According to a first development, the axes of both pressure rollers lie in one common level. Furthermore, the axes of both pressure rollers can face each other arranged vertically pivoted through an angle, e.g. in one Angular range between 10 ° and 45 °.
Zur guten Führung des Rohres im zum Rohr geformten Zustand können weiterhin mindestens zwei weitere Druckrollen vorsehen werden, die jeweils das zum Rohr geformte Metallband teilweise umfassen; die Achsen der beiden weiteren Druckrollen verlaufen bevorzugt parallel. Mit Vorteil liegen die Achsen aller Druckrollen in einer gemeinsamen Ebene.For good guidance of the pipe in the shape of the pipe can continue At least two additional pressure rollers will be provided, each of which is for the pipe partially include molded metal tape; the axes of the two other pressure rollers preferably run in parallel. The axes of all pressure rollers are advantageous on a common level.
Eine baulich einfache Ausgestaltung ergibt sich, wenn - gemäß einer weiteren Fortbildung - zwischen Grundplatte und erstem Schlitten mindestens eine horizontale Führung und mindestens eine vertikale Führung angeordnet ist, mit denen der erste Schlitten relativ zur Grundplatte bewegt werden kann. Entsprechend kann zwischen dem ersten Schlitten und dem zweite Schlitten mindestens eine horizontale Führung und mindestens eine vertikale Führung angeordnet sein, mit denen sich der zweite Schlitten relativ zum ersten bewegen läßt.A structurally simple configuration results if - according to another Training - at least one horizontal one between the base plate and the first slide Guide and at least one vertical guide is arranged with which the first carriage can be moved relative to the base plate. Corresponding can be at least one between the first carriage and the second carriage horizontal guide and at least one vertical guide can be arranged with which the second carriage can move relative to the first.
Die Bewegung der Schlitten erfolgt bevorzugt mit Linearaktuatoren, bei denen es sich bevorzugt um Gewindespindel-Mutter-Systeme handelt. Diese können jeweils von einer Motor-Getriebeeinheit angetrieben werden. Die vertikale Verstellung zumindest einer der Schlitten, vorzugsweise des ersten Schlittens relativ zur Grundplatte, erfolgt mit Vorteil über zwei parallel angeordnete Gewindespindel-Mutter-Systeme, wodurch eine verkantungsfreie Führung großer Elemente gewährleistet ist. Weiterhin kann der Antrieb der parallel angeordneten Gewindespindel-Mutter-Systeme durch zwei Getriebe erfolgen, die von einem gemeinsamen Motor angetrieben werden; dabei kann zwischen den beiden Getrieben, bevorzugt Schneckengetriebe, eine Kupplung angeordnet sein.The movement of the carriage is preferably carried out with linear actuators, in which there is are preferably threaded spindle-nut systems. These can each are driven by a motor gear unit. The vertical adjustment at least one of the sledges, preferably the first sled relative to the Base plate, is advantageously carried out via two parallel threaded spindle-nut systems, which ensures that large elements cannot be tilted is. Furthermore, the drive of the parallel threaded spindle-nut systems can done by two gears by a common one Motor driven; can be preferred between the two gears Worm gear, a clutch can be arranged.
Zwischen Grundplatte und erstem Schlitten bzw. zwischen erstem Schlitten und zweitem Schlitten lassen sich Einstell- und Arretiermittel vorsehen, mit denen die jeweiligen Elemente zueinander in ihrer Position eingestellt und festgelegt werden können. Diese Ausgestaltung ist bevorzugt nur zwischen erstem Schlitten und zweitem Schlitten vorgesehen, wobei die Einstell- und Arretiermittel die beiden Schlitten in vertikaler Richtung zueinander in ihrer Position einstellen und festlegen. Als Positions-Einstell- und Arretiermittel eignet sich z.B. ein verstellbarer Keil; dieser kann mit Verschiebemitteln verbunden sein, so dass eine einfache Positionierung des Keils möglich ist. Die Verschiebemittel können dabei eine Schraube aufweisen.Between the base plate and the first slide or between the first slide and second carriage adjustment and locking means can be provided with which the respective elements can be adjusted and fixed in relation to each other in their position can. This configuration is preferably only between the first carriage and provided second carriage, the adjusting and locking means the two Adjust and fix the position of the slide in the vertical direction to each other. Suitable position adjusting and locking means are e.g. an adjustable wedge; this can be connected with displacement means, so that easy positioning of the wedge is possible. The displacement means can be a screw exhibit.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die einzige Figur zeigt schematisch eine Rohrschweißvorrichtung mit Blick in Richtung der Längsachse des gefertigten Rohres. In the drawing, an embodiment of the invention is shown. The only Figure shows schematically a pipe welding device with a view towards the Longitudinal axis of the manufactured pipe.
In einer Rohrschweißvorrichtung 1 ist ein Rohr 2 aus einem ebenen Blechstreifen
geformt worden, wobei sich eine Nahtstelle 4 am Rohr 2 ergibt, die auf der Vorrichtung
1 verschweißt wird. Das Rohr 2 läuft beim Schweißvorgang kontinuierlich
in Richtung der Längsachse 3 des Rohres 2 durch die Vorrichtung 1 hindurch.In a
Die Rohrschweißvorrichtung 1 weist eine Grundplatte 5 auf, die ortsfest angeordnet
ist. Auf der Grundplatte 5 ist ein erster Schlitten 6 angeordnet. Dieser ist über
zwei horizontale Linearführungen 16 und zwei vertikale Linearführungen 17 in
zwei zueinander orthogonale Richtungen (Horizontale und Vertikale) relativ zur
Grundplatte 5 bewegbar.The
Hierfür sind lineare Bewegungselemente (Linearaktuatoren) vorgesehen, nämlich
ein Gewindespindel-Mutter-System 20 für die horizontale Verschiebung des ersten
Schlittens 6 relativ zur Grundplatte 5 sowie ein Gewindespindel-Mutter-System 21
für die entsprechende vertikale Verschiebung. Diese Linearaktuatoren 20, 21 sind
nur sehr schematisch dargestellt, weil es sich hierbei um im Stand der Technik
hinlänglich bekannte Elemente handelt. Lediglich bezüglich des Gewindespindel-Mutter-Systems
21 ist etwas detaillierter skizziert, dass hier zwei parallele Gewindespindeln
21 vorgesehen sind, die den Schlitten 6 relativ zur Grundplatte 5 vertikal
bewegen. Ein Verkanten des ersten Schlittens 6 wird dadurch vermieden. Der
Antrieb der Spindeln 21 erfolgt durch zwei Getriebe 24 und 25, die über eine
Kupplung 26 miteinander verbunden sind. Der Antrieb selbst erfolgt durch einen
Motor 23, der beide Getriebe 24 und 25 antreibt.Linear motion elements (linear actuators) are provided for this, namely
a lead
Im unteren Bereich des ersten Schlittens 6 ist eine erste Druckrolle 7 angeordnet.
Deren Achse 10 ist gegenüber der Horizontalen um einen Schwenkwinkel α gedreht
angeordnet. Damit rollt die erste Druckrolle 7 im Bereich der Nahtstelle 4 des
Rohres 2 links von der Nahtstelle 4 am Rohr 2 ab, womit eine genaue Führung
dieses Winkelsegments des Rohres 2 sichergestellt ist. A first pressure roller 7 is arranged in the lower region of the first carriage 6.
Their
Mit dem ersten Schlitten 6 sind zwei horizontale Führungen 18 und zwei vertikale
Führungen 19 verbunden, über die ein zweiter Schlitten 8 relativ zum ersten
Schlitten 6 bewegbar geführt wird. Am zweiten Schlitten 8 ist - analog zur ersten
Druckrolle 7 - eine zweite Druckrolle 9 angeordnet, die rechts neben der Nahtstelle
4 das dieser benachbarte Winkelsegment des Rohres 2 exakt führt. Die Achse 11
der zweiten Druckrolle 9 ist spiegelbildlich zur Achse 10 der ersten Druckrolle 7
um den Winkel α geschwenkt.With the first carriage 6 are two
Eine insgesamt genaue und optimale Führung des gesamten Rohrumfangs wird
durch zwei weitere Druckrollen 12 und 13 erreicht, wobei letztere im Ausführungsbeispiel
das Rohr jeweils über einen Umfangsabschnitt von ca. 150° führen. Die
weiteren Druckrollen 12 und 13 weisen Achsen 14 bzw. 15 auf, die vertikal ausgerichtet
sind. Damit wird das Rohr 2 - bis auf die Nahtstelle 4 selber - weitgehend
umfasst und genau geführt. Die Achsen 10 und 11 der ersten bzw. zweiten Druckrolle
7 bzw. 9 sowie die Achsen 14 und 15 der weiteren Druckrollen 12 und 13 liegen
hierbei in einer gemeinsamen Ebene.An overall accurate and optimal guidance of the entire pipe circumference is
achieved by two
Die Bewegung des zweiten Schlittens 8 relativ zum ersten Schlitten 6 wird - was
die horizontale Bewegung anbelangt - über ein Gewindespindel-Mutter-System 22
bewerkstelligt, wobei dasselbe gilt, was im Zusammenhang mit den Systemen 20
und 21 oben ausgeführt wurde. Die vertikale Einstellung und Arretierung des
zweiten Schlittens 8 relativ zum ersten Schlitten 6 erfolgt mittels eines Keils 27,
der mit nur sehr schematisch skizzierten Verschiebemitteln 28 in Verbindung
steht. Durch horizontale Verschiebung des Keils (z.B. mittels einer nicht dargestellten
Schraube) kann die relative vertikale Position zwischen erstem und zweitem
Schlitten 6 bzw. 8 eingestellt und arretiert werden. The movement of the
Mit Hilfe der vorgeschlagenen Vorrichtung ist es möglich, auf der Basis von am
durchlaufenden Rohr 2 sensorisch ermittelten Werten die erste und zweite Druckrolle
7 bzw. 9 prozessnah, schnell und direkt in jede beliebige Stellung zum Rohr 2
und zueinander zu bringen, wodurch Abweichungen in der Geometrie des Rohres
ausgeglichen werden können. Die Rohrqualität wird dadurch wesentlich verbessert. With the help of the proposed device it is possible, on the basis of am
passing tube 2 sensor-determined values, the first and
- 11
- RohrschweißvorrichtungPipe welder
- 22
- Rohrpipe
- 33
- Längsachselongitudinal axis
- 44
- Nahtstellejoin
- 55
- Grundplattebaseplate
- 66
- erster Schlittenfirst sled
- 77
- erste Druckrollefirst pressure roller
- 88th
- zweiter Schlittensecond sledge
- 99
- zweite Druckrollesecond pressure roller
- 1010
- Achse der ersten Druckrolle 7Axis of the first pressure roller 7
- 1111
-
Achse der zweiten Druckrolle 9Axis of the
second pressure roller 9 - 1212
- weitere Druckrolleanother pressure roller
- 1313
- weitere Druckrolleanother pressure roller
- 1414
-
Achse der weiteren Druckrolle 12Axis of the
further pressure roller 12 - 1515
-
Achse der weiteren Druckrolle 13Axis of the
further pressure roller 13 - 1616
- horizontale Führunghorizontal guidance
- 1717
- vertikale Führungvertical guidance
- 1818
- horizontale Führunghorizontal guidance
- 1919
- vertikale Führungvertical guidance
- 2020
- Linearaktuator (Gewindespindel-Mutter-System)Linear actuator (threaded spindle-nut system)
- 2121
- Linearaktuator (Gewindespindel-Mutter-System)Linear actuator (threaded spindle-nut system)
- 2222
- Linearaktuator (Gewindespindel-Mutter-System)Linear actuator (threaded spindle-nut system)
- 2323
- Motorengine
- 2424
- Getriebe transmission
- 2525
- Getriebetransmission
- 2626
- Kupplungclutch
- 2727
- Einstell- und Arretiermittel (Keil)Adjustment and locking means (wedge)
- 2828
- Verschiebemitteldisplacement means
- αα
- Winkelangle
Claims (16)
dadurch gekennzeichnet, dass die Achsen (10, 11) beider Druckrollen (7, 9) in einer gemeinsamen Ebene liegen.Pipe welding device according to claim 1,
characterized in that the axes (10, 11) of both pressure rollers (7, 9) lie in a common plane.
dadurch gekennzeichnet, dass die Achsen (10, 11) beider Druckrollen (7, 9) gegenüber der Horizontalen um einen Winkel geschwenkt angeordnet sind.Pipe welding device according to claim 1 or 2,
characterized in that the axes (10, 11) of both pressure rollers (7, 9) are arranged pivoted at an angle with respect to the horizontal.
gekennzeichnet durch,
mindestens zwei weitere Druckrollen (12, 13), die jeweils das zum Rohr (2) geformte Metallband teilweise umfassen.Pipe welding device according to one of claims 1 to 3,
marked by,
at least two further pressure rollers (12, 13), each of which partially encompasses the metal strip formed into the tube (2).
dadurch gekennzeichnet, dass die Achsen (14, 15) der beiden weiteren Druckrollen (12, 13) parallel verlaufen.Pipe welding device according to claim 4,
characterized in that the axes (14, 15) of the two further pressure rollers (12, 13) run parallel.
dadurch gekennzeichnet, dass die Achsen (10, 11, 14, 15) aller Druckrollen (7, 9, 12, 13) in einer gemeinsamen Ebene liegen.Pipe welding device according to claim 4 or 5,
characterized in that the axes (10, 11, 14, 15) of all the pressure rollers (7, 9, 12, 13) lie in a common plane.
dadurch gekennzeichnet, dass zwischen der Grundplatte (5) und dem ersten Schlitten (6) mindestens eine horizontale Führung (16) und mindestens eine vertikale Führung (17) angeordnet ist, mit denen der erste Schlitten (6) relativ zur Grundplatte (5) bewegbar ist.Pipe welding device according to one of claims 1 to 6,
characterized in that at least one horizontal guide (16) and at least one vertical guide (17) are arranged between the base plate (5) and the first slide (6), with which the first slide (6) can be moved relative to the base plate (5) is.
dadurch gekennzeichnet, dass zwischen dem ersten Schlitten (6) und dem zweiten Schlitten (8) mindestens eine horizontale Führung (18) und mindestens eine vertikale Führung (19) angeordnet ist, mit denen der zweite Schlitten (8) relativ zum ersten Schlitten (6) bewegbar ist.Pipe welding device according to one of claims 1 to 7,
characterized in that at least one horizontal guide (18) and at least one vertical guide (19) are arranged between the first slide (6) and the second slide (8), by means of which the second slide (8) is positioned relative to the first slide (6 ) is movable.
dadurch gekennzeichnet, dass Linearaktuatoren (20, 21, 22) für die Bewegung der Schlitten (6, 8) angeordnet sind.Pipe welding device according to one of claims 1 to 8,
characterized in that linear actuators (20, 21, 22) are arranged for the movement of the slides (6, 8).
dadurch gekennzeichnet, dass als Linearaktuatoren (20, 21, 22) Gewindespindel-Mutter-Systeme eingesetzt sindPipe welding device according to claim 9,
characterized in that threaded spindle-nut systems are used as linear actuators (20, 21, 22)
dadurch gekennzeichnet, dass die Gewindespindel-Mutter-Systeme jeweils mit einer Motor-Getriebeeinheit (23, 24, 25) verbunden sind.Pipe welding device according to claim 10,
characterized in that the threaded spindle-nut systems are each connected to a motor gear unit (23, 24, 25).
dadurch gekennzeichnet, dass zur vertikalen Verstellung zumindest einer der Schlitten (6, 8), vorzugsweise des ersten Schlittens (6) relativ zur Grundplatte (5), zwei parallel angeordnete Gewindespindel-Mutter-Systeme (21) vorgesehen sind. Pipe welding device according to claim 11,
characterized in that for the vertical adjustment of at least one of the carriages (6, 8), preferably the first carriage (6) relative to the base plate (5), two threaded spindle-nut systems (21) arranged in parallel are provided.
dadurch gekennzeichnet, dass der Antrieb der parallel angeordneten Gewindespindel-Mutter-Systeme (21) durch zwei von einem gemeinsamen Motor (23) angetriebene Getriebe (24, 25) erfolgt.Pipe welding device according to claim 12,
characterized in that the parallel threaded spindle-nut systems (21) are driven by two gears (24, 25) driven by a common motor (23).
dadurch gekennzeichnet, dass zwischen der Grundplatte (5) und dem ersten Schlitten (6) und/oder zwischen erstem Schlitten (6) und zweitem Schlitten (8) Positions-Einstellund Arretiermittel (27) angeordnet sind.Pipe welding device according to one of claims 1 to 13,
characterized in that position setting and locking means (27) are arranged between the base plate (5) and the first slide (6) and / or between the first slide (6) and the second slide (8).
dadurch gekennzeichnet, dass Positions-Einstell- und Arretiermittel (27) nur zwischen erstem Schlitten (6) und zweitem Schlitten (8) angeordnet sind, die beide Schlitten (6, 8) in vertikaler Richtung zueinander in ihrer Position einstellen und festlegen.Pipe welding device according to claim 14,
characterized in that position setting and locking means (27) are arranged only between the first carriage (6) and the second carriage (8), which adjust and fix the position of both carriages (6, 8) in the vertical direction to one another.
gekennzeichnet durch
einen verstellbaren Keil als Einstell- und Arretiermittel (27).Pipe welding device according to claim 14 or 15,
marked by
an adjustable wedge as setting and locking means (27).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10153688 | 2001-10-31 | ||
| DE10153688A DE10153688C1 (en) | 2001-10-31 | 2001-10-31 | Pipe welding machine has fixed base plate with carriages supporting pressure rollers to guide metal pipe to forming and welding station |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1308222A2 true EP1308222A2 (en) | 2003-05-07 |
| EP1308222A3 EP1308222A3 (en) | 2004-08-11 |
| EP1308222B1 EP1308222B1 (en) | 2007-08-01 |
Family
ID=7704299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02020730A Expired - Lifetime EP1308222B1 (en) | 2001-10-31 | 2002-09-14 | Tube welding device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1308222B1 (en) |
| AT (1) | ATE368535T1 (en) |
| DE (2) | DE10153688C1 (en) |
| ES (1) | ES2289036T3 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2460745A1 (en) * | 1979-07-06 | 1981-01-30 | Egimot | Forging machine for mfg. tube with longitudinal seam weld - where forging rolls exert uniform pressure when squeezing the tube to make the weld |
| JPS59199113A (en) * | 1983-04-26 | 1984-11-12 | Mitsubishi Heavy Ind Ltd | Squeezing-roll device |
| JPS60231526A (en) * | 1984-05-01 | 1985-11-18 | Nippon Steel Corp | Forming of electric welded pipe |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1289814B (en) * | 1969-02-27 | |||
| DE1923241A1 (en) * | 1969-05-07 | 1970-11-19 | Demag Ag | Device for continuous longitudinal seam welding of pipes |
| DE3212365C2 (en) * | 1982-03-31 | 1984-06-07 | Mannesmann AG, 4000 Düsseldorf | Welding roller block for high-frequency welding of pipes |
-
2001
- 2001-10-31 DE DE10153688A patent/DE10153688C1/en not_active Expired - Lifetime
-
2002
- 2002-09-14 ES ES02020730T patent/ES2289036T3/en not_active Expired - Lifetime
- 2002-09-14 AT AT02020730T patent/ATE368535T1/en active
- 2002-09-14 DE DE50210586T patent/DE50210586D1/en not_active Expired - Lifetime
- 2002-09-14 EP EP02020730A patent/EP1308222B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2460745A1 (en) * | 1979-07-06 | 1981-01-30 | Egimot | Forging machine for mfg. tube with longitudinal seam weld - where forging rolls exert uniform pressure when squeezing the tube to make the weld |
| JPS59199113A (en) * | 1983-04-26 | 1984-11-12 | Mitsubishi Heavy Ind Ltd | Squeezing-roll device |
| JPS60231526A (en) * | 1984-05-01 | 1985-11-18 | Nippon Steel Corp | Forming of electric welded pipe |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN Bd. 0090, Nr. 67 (M-366), 27. März 1985 (1985-03-27) & JP 59 199113 A (MITSUBISHI JUKOGYO KK), 12. November 1984 (1984-11-12) * |
| PATENT ABSTRACTS OF JAPAN Bd. 0100, Nr. 96 (M-469), 12. April 1986 (1986-04-12) & JP 60 231526 A (SHIN NIPPON SEITETSU KK), 18. November 1985 (1985-11-18) * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10153688C1 (en) | 2003-04-10 |
| ES2289036T3 (en) | 2008-02-01 |
| DE50210586D1 (en) | 2007-09-13 |
| ATE368535T1 (en) | 2007-08-15 |
| EP1308222A3 (en) | 2004-08-11 |
| EP1308222B1 (en) | 2007-08-01 |
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