EP0659494A2 - Device for discharging of cold rolled tubes after a cold pilger mill - Google Patents

Device for discharging of cold rolled tubes after a cold pilger mill Download PDF

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Publication number
EP0659494A2
EP0659494A2 EP94250291A EP94250291A EP0659494A2 EP 0659494 A2 EP0659494 A2 EP 0659494A2 EP 94250291 A EP94250291 A EP 94250291A EP 94250291 A EP94250291 A EP 94250291A EP 0659494 A2 EP0659494 A2 EP 0659494A2
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EP
European Patent Office
Prior art keywords
tube
pipe
cold
rolling
deflection
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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
Application number
EP94250291A
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German (de)
French (fr)
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EP0659494A3 (en
EP0659494B1 (en
Inventor
Michael Baensch
Wilfried Schrey
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Vodafone GmbH
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Mannesmann AG
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Publication of EP0659494A2 publication Critical patent/EP0659494A2/en
Publication of EP0659494A3 publication Critical patent/EP0659494A3/en
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Publication of EP0659494B1 publication Critical patent/EP0659494B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B21/00Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/005Pilgrim-step tube-rolling, i.e. pilger mills with reciprocating stand, e.g. driving the stand
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057Coiling the rolled product

Definitions

  • the invention relates to a device for removing cold-rolled pipes behind a cold pilger rolling mill with batch feed and / or turning of the pipe, in which the pipe is deflected from the rolling direction between the rolling zone and a driver operating at constant speed in a buffer zone to compensate for the cyclically uneven rolling speed becomes.
  • Another problem is that, especially when rolling copper tubes, there is a need to reduce the number of strokes of the cold pilger rolling mill when the tube which has been rolled at the moment has left the first of the holding members, namely the tensioning slide. If the pipe has also left the inlet chuck, the number of strokes must be reduced again. This reduction in the number of strokes works the clearer the total achievable production of the cold pilger rolling mill, the higher the number of strokes in normal operation. This applies in particular if the nominal number of strokes is to be increased by other measures.
  • the generic script already suggests dynamically decoupling the tube length, which is located behind the buffer zone formed between the rolling zone and driver, from the remaining tube mass. so that only the mass of the tube located in the buffer zone can be moved cyclically.
  • the pipe is deflected out of the roller plane after a straight outlet run of approximately 30 meters in length and introduced into the drive apparatus in a curvature of approximately 15 meters with a deflection of approximately 70 degrees.
  • the deflection of the tube is S-shaped.
  • the deflection takes place in alternating directions with multiple deflections.
  • the prefabricated pipe lengths to be buffered can be saved in the multi-curved bending line of the pipe without the system requiring unusable dimensions.
  • the positive guidance for the deflected pipe is adjustable. This adjustability allows the buffer zone to be adapted to a wide variety of production parameters in order to achieve an optimal effect.
  • the deflection of the tube can take place on an adjustable guide wall within an at least three-sided closed guide channel, which can be adjusted transversely to the guide channel in the direction of deflection of the tube.
  • the cold pilger rolling mill is designated by 1, which, with the interposition of push rods 2, is driven by the drive 3 with gear and mass balance, the rollers of the cold pilger rolling mill 1 rolling on the pipe.
  • the tube is rotated about its longitudinal axis in a known manner and advanced by a certain amount, which results from the length of the caliber of the rollers.
  • Each feed means that the tube leaving the rollers of the cold pilger roll stand 1 must be accelerated by the feed path and decelerated to stop. Particularly when large lengths of pipe have already left the cold pilger mill, very large masses must be accelerated and braked.
  • this mass can then be limited if one grips the outgoing pipe behind a buffer zone 4 by a driver 5, which at a constant speed that the corresponds to the mean outlet speed of the tube from the cold pilger roll stand 1, transported and during which the batchwise forward movement of the tube in the buffer zone 4 picks up.
  • this buffer zone is designed so that with an S-shaped curvature of the tube in this buffer zone 4, the bending line of the S-shaped tube can be changed to such an extent that the cyclically fluctuating change in finished tube length in the S-shaped Pipe section is added.
  • the following reel H is arranged in a line behind the cold pilger roll stand 1, i. H. the tube is only slightly deflected from the rolling line and parallel to it. This avoids the large deflection radii in the prior art, which required a lot of space, without the storage of the tube length leaving the cold pilger roll stand being adversely affected.
  • a straight outlet for the pipes can also be provided.
  • the buffer zone is designed as a guide channel closed at least on three sides, into which an adjustable guide wall 6 can be integrated, which is described in more detail with reference to FIG. 2.
  • the guide wall 6 can be adjusted together with a guide roller 7 for the tube indicated at R by means of the piston-cylinder unit 8, the end position being shown in dashed lines.
  • different bending profiles of the pipe can be set, which in turn show different buffer effects with different pipes.
  • the driving device 5 is suitable for pulling the finished-rolled pipe out of the cold pilger rolling mill without the pipe end making disruptive whipping movements, as can be the case in the prior art.
  • the driver 5 allows the supply of very short tubes to downstream facilities such. B. reels H.
  • the driving device 5 can also be used as an additional organ for forcing a uniform movement of the finished tube if there are slight deviations from the set parameters. In any case, precise regulation of the speed (speed) of the driving apparatus 5 is required, as is already the case in the prior art.
  • the speed of the pipe which is picked up via a roller, for example, can serve as a guide variable.
  • the functional sequence of the device shown is as follows: The beginning of the pipe is passed through the guide channel 4 and deflected by the guide wall 6. This is set in the position shown in FIG. 2 (with solid lines) and is pivoted into the position shown in broken lines as soon as the beginning of the pipe has passed the guide wall. In the further course, the beginning of the pipe is led through the guide channel into the outlet and gripped by the driver. During the rolling operation, the tube constantly changes its S-shaped curved bending line and stores the cyclically occurring tube lengths in the driving apparatus 5 when the tube is evenly withdrawn.
  • the driving device 5 completely pulls it out of the cold pilger roll stand and the buffer zone.
  • the guide wall 6 can be slowly moved back into the starting position (shown with solid lines), so that the pipe reaches an extended position.

Abstract

The invention relates to a device for discharging cold rolled tubes after a cold pilger mill with stepwise feed and/or rotation of the tube, in which the tube is deflected from the rolling direction in a buffer zone between the rolling zone and a driver (pinch roll unit) operating at constant speed to compensate for the cyclically nonuniform rolling speed. According to the invention, the tube (R) is deflected in a S by constrained guidance. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Abführen von Kaltgewalzten Rohren hinter einem kaltpilgerwalzwerk mit absatzweisem Vorschub und/oder Drehen des Rohres, bei der das Rohr zwischen der Walzzone und einem mit konstanter Geschwindigkeit arbeitenden Treiber in einer Pufferzone zum Ausgleich der zyklisch ungleichmäßigen Walzgeschwindigkeit aus der Walzrichtung ausgelenkt wird.The invention relates to a device for removing cold-rolled pipes behind a cold pilger rolling mill with batch feed and / or turning of the pipe, in which the pipe is deflected from the rolling direction between the rolling zone and a driver operating at constant speed in a buffer zone to compensate for the cyclically uneven rolling speed becomes.

Aus der gattungsbildenden DE 31 46 284 C2 ist ein Verfahren und eine Vorrichtung zum Abführen von kaltgewalzten Rohren größer Länge hinter einem Walzwerk mit hin- und hergehendem Walzgerüst und darin befindlichen zwangsangetriebenen kalibrierten Walzen mit absatzweisem Vorschub und/oder Drehung des Rohres im Bereich eines oder beider Totpunkte bekannt, wobei die wechselseitige Drehung je Drehrichtung gleich groß ist. Das bekannte Verfahren sieht vor, die für Kaltpilgerwalzwerke mit hin- und hergehendem Walzgerüst typische zyklisch ungleichmäßige Vorschub-/Austritts-Geschwindigkeit des ausgewalzten Rohres in einer Pufferzone in eine konstante Auslaufgeschwindigkeit umzuwandeln, während das Rohr durch einen mit konstanter Geschwindigkeit arbeitenden Treibapparat in einem Abstand von der Walzzone geführt wird. Der Treibapparat ist in einem solchen Abstand angeordnet, daß die Torsionsspannungen im Rohr die Fließgrenze des Rohres nicht überschreiten.From the generic DE 31 46 284 C2 is a method and an apparatus for the removal of cold-rolled pipes of greater length behind a rolling mill with a reciprocating roll stand and the positively driven calibrated rolls located therein with batch feed and / or rotation of the pipe in the area of one or both Dead points are known, the mutual rotation being the same in each direction of rotation. The known method provides that which is typical for cold pilger rolling mills with a reciprocating roll stand converting the cyclically uneven feed / exit speed of the rolled-out tube in a buffer zone into a constant outlet speed, while the tube is guided at a distance from the rolling zone by a driving device operating at constant speed. The driving device is arranged at such a distance that the torsional stresses in the tube do not exceed the yield point of the tube.

Schon der bekannten Lösung liegt das bei Kaltpilgerwalzwerken bekannte Problem zugrunde, daß bei größeren Rohrlängen stets die gesamte Rohrlänge beim zyklischen Vorschub beschleunigt und abgebremst werden muß, wobei die dafür erforderlichen Beschleunigungskräfte vom Umformprozeß aufgebracht werden müssen. Üblicherweise werden diese Beschleunigungs- und Verzögerungskräfte von den Spannfuttern (Spannschlitten, Einlauf- und Auslaufspannfutter) und eine ggfs. zusätzlich vorhandenen Rohrbremse übertragen. Schon bei Rohren ab Längen von etwa 90 Metern entstehen Beschleunigungen über 10g, die mit längerwerdendem Rohr anwachsen und letztlich dazu führen können, daß sich das Rohr in seiner Verzögerungsphase unkontrolliert in Walzrichtung vorwärtsbewegt, d. h., es kommt zu einem ungewollten Vorschub. Die aufzubringenden Verzögerungskräfte zum Halten des Rohres hängen u. a. von der Masse des zu verzögernden Fertigrohres und von der Hubzahl des Kaltpilgerwalzwerkes ab.Even the known solution is based on the problem known in cold pilger rolling mills that, with longer pipe lengths, the entire pipe length must always be accelerated and braked during the cyclical feed, the acceleration forces required for this having to be applied by the forming process. These acceleration and deceleration forces are usually transmitted by the chucks (slide, infeed and outfeed chucks) and any additional pipe brake. Even with pipes from lengths of about 90 meters, accelerations of more than 10 g occur, which grow with the length of the pipe and can ultimately lead to the pipe moving forward in an uncontrolled manner in the rolling direction in its deceleration phase. that is, there is an unwanted feed. The delay forces to be applied to hold the pipe depend u. a. on the mass of the finished pipe to be decelerated and on the number of strokes of the cold pilger rolling mill.

Ein anderes Problem besteht darin, daß, insbesondere beim Walzen von Kupferröhren die Notwendigkeit besteht, die Hubzahl des Kaltpilgerwalzwerkes zu reduzieren, wenn das augenblicklich gewalzte Rohr das erste der Halteorgane, nämlich den Spannschlitten verlassen hat. Wenn das Rohr außerdem das Einlaufspannfutter verlassen hat, ist die Hubzahl nochmals zu reduzieren. Diese Reduktion der Hubzahlen wirkt sich umso deutlicher auf die gesamte erzielbare Produktion des Kaltpilgerwalzwerkes aus, je höher die Hubzahl im Normalbetrieb liegt. Das gilt insbesondere, wenn die Nenn-Hubzahl durch andere Maßnahmen gesteigert werden soll.Another problem is that, especially when rolling copper tubes, there is a need to reduce the number of strokes of the cold pilger rolling mill when the tube which has been rolled at the moment has left the first of the holding members, namely the tensioning slide. If the pipe has also left the inlet chuck, the number of strokes must be reduced again. This reduction in the number of strokes works the clearer the total achievable production of the cold pilger rolling mill, the higher the number of strokes in normal operation. This applies in particular if the nominal number of strokes is to be increased by other measures.

Bereits die gattungsbildende Schrift schlägt als Maßnahme zur Begrenzung der zu beschleunigenden und zu verzögernden Massen vor, die Rohrlänge, die sich hinter der zwischen Walzzone und Treiber gebildeten Pufferzone befindet, von der übrigen Rohrmasse dynamisch abzukoppeln. so daß nur noch die in der Pufferzone befindliche Masse des Rohres zyklisch zu bewegen ist. In der Ausführung der bekannten Lösung ist vorgesehen, das Rohr nach einer geradlinig geführten Auslaufstrecke von ca. 30 Meter Länge aus der Walzebene auszulenken und in einer Krümmung von ca. 15 Meter Radius bei einer Auslenkung von ca. 70 Grad in den Treibapparat einzuführen.As a measure to limit the masses to be accelerated and decelerated, the generic script already suggests dynamically decoupling the tube length, which is located behind the buffer zone formed between the rolling zone and driver, from the remaining tube mass. so that only the mass of the tube located in the buffer zone can be moved cyclically. In the implementation of the known solution, the pipe is deflected out of the roller plane after a straight outlet run of approximately 30 meters in length and introduced into the drive apparatus in a curvature of approximately 15 meters with a deflection of approximately 70 degrees.

Es hat sich in der Praxis gezeigt, daß eine derartig große Auslenkung aus der Walzachse in nahezu allen Anwendungsfällen zu erheblichen Raumproblemen führt, die den Einsatz der bekannten Vorrichtung ausschließt.It has been shown in practice that such a large deflection from the rolling axis leads to considerable space problems in almost all applications, which precludes the use of the known device.

Aufgabe der vorliegenden Erfindung ist es, ausgehend von dem bekannten Verfahren und der bekannten Vorrichtung eine verbesserte Vorrichtung zu schaffen, mit der bei verringertem Raumbedarf eine Anpassung der Pufferzone an die von Rohrdurchmesser und Rohrmaterial abhängigen veränderlichen Parameter möglich ist.It is an object of the present invention to provide an improved device based on the known method and the known device, with which the buffer zone can be adapted to the variable parameters dependent on the pipe diameter and pipe material with a reduced space requirement.

Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß die Auslenkung des Rohres zwangsgeführt S-förmig erfolgt.To achieve the object, it is proposed according to the invention that the deflection of the tube is S-shaped.

In überraschender Weise hat sich herausgestellt, daß für die Abkopplung der großen Rohrmassen hinter dem Treiber keine Pufferzone mit stetig gekrümmtem Auslauf mit großem Radius erforderlich ist, sondern daß ein paralleles Versetzen des Rohres im Bereich zwischen dem Kaltpilgerwalzwerk und dem Treiber ausreicht, wenn das Rohr in diesem Bereich S-förmig gekrümmt wird. In diesem Bereich verändert das Rohr unter dem Einfluß der Beschleunigungen und Verzögerungen seine Lage und damit seine Biegelinie derart, daß zwischen den Lagen maximaler Beschleunigung und maximaler Verzögerung die in dieser Zeit zusätzlich zur mittleren Rohraustrittsgeschwindigkeit ausgetretene Fertigrohrlänge in der dann längeren Biegelinie Platz findet. Eine solche Vorrichtung, bei der das Rohr in der erfindungsgemäßen Weise S-förmig zwangsgeführt ist, benötigt wesentlich weniger Raum, als das bei der Lösung gemäß der DE 31 46 284 C2 der Fall ist und läßt sich deshalb auch problemlos in bestehende Anlagen integrieren.Surprisingly, it has been found that for the decoupling of the large pipe masses behind the driver, no buffer zone with a continuously curved outlet with a large radius is required, but that a parallel displacement of the pipe in the area between the cold pilger rolling mill and the driver is sufficient if the pipe is in this area is curved in an S-shape. In this area, under the influence of the accelerations and decelerations, the pipe changes its position and thus its bending line in such a way that between the positions of maximum acceleration and maximum deceleration, the finished pipe length escaping during this time in addition to the average pipe outlet speed can be accommodated in the then longer bending line. Such a device, in which the pipe is positively S-shaped in the manner according to the invention, requires considerably less space than is the case with the solution according to DE 31 46 284 C2 and can therefore also be easily integrated into existing systems.

Es ist nach einem weiteren Merkmal der Erfindung auch denkbar daß die Auslenkung in wechselnden Richtungen mit mehrfacher Umlenkung erfolgt. Auch bei dieser Variante lassen sich die zwischenzupuffernden Fertigrohrlängen in der mehrfach gekrümmten Biegelinie des Rohres speichern, ohne daß die Anlage unbrauchbare Ausmaße benötigt.According to a further feature of the invention, it is also conceivable that the deflection takes place in alternating directions with multiple deflections. In this variant, too, the prefabricated pipe lengths to be buffered can be saved in the multi-curved bending line of the pipe without the system requiring unusable dimensions.

Da ein erfindungsgemäßer Auslauf eines Kaltpilgerwalzwerkes für ganz bestimmte Produktionsparameter, wie Hubzahl, Fertigrohrlänge je Hub. Fertigrohrabmessung und Fertigrohrmaterial unterschiedliche Auslenkungen des Rohres erfordert, ist nach einem weiteren Merkmal der Erfindung vorgesehen, daß die Zwangsführung für das ausgelenkte Rohr einstellbar ist. Durch diese Einstellbarkeit läßt sich die Pufferzone an die verschiedensten Produktionsparameter anpassen, um eine optimale Wirkung zu erzielen.Since an inventive exit of a cold pilger rolling mill for very specific production parameters, such as the number of strokes, the finished tube length per stroke. Finished pipe dimension and finished pipe material requires different deflections of the pipe, it is provided according to a further feature of the invention that the positive guidance for the deflected pipe is adjustable. This adjustability allows the buffer zone to be adapted to a wide variety of production parameters in order to achieve an optimal effect.

Erfindungsgemäß kann die Auslenkung des Rohres an einer verstellbaren Führungswand innerhalb eines mindestens dreiseitig geschlossenen Führungskanals erfolgen, die quer zum Führungskanal in Auslenkrichtung des Rohres einstellbar ist. Durch diese Lösung können die jeweils für das entsprechende Rohr erforderlichen Biegelinien erzwungen werden.According to the invention, the deflection of the tube can take place on an adjustable guide wall within an at least three-sided closed guide channel, which can be adjusted transversely to the guide channel in the direction of deflection of the tube. With this solution, the bending lines required for the respective pipe can be forced.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben. Es zeigt:

Fig. 1
eine Draufsicht auf ein Kaltpilgerwalzwerk mit der erfindungsgemäßen Pufferzone und
Fig. 2
eine vergrößerte Darstellung der einstellbaren Führungswand innerhalb der Pufferzone.
An embodiment of the invention is shown in the drawing and is described below. It shows:
Fig. 1
a plan view of a cold pilger mill with the buffer zone according to the invention and
Fig. 2
an enlarged view of the adjustable guide wall within the buffer zone.

In Figur 1 ist mit 1 das Kaltpilgerwalzwerk bezeichnet, das unter Zwischenschaltung von Schubstangen 2 von dem Antrieb 3 mit Getriebe und Massenausgleich angetrieben ist, wobei die Walzen des Kaltpilgerwalzgerüstes 1 auf dem Rohr abwalzen. Jeweils in den Totpunkten des Kaltpilgerwalzgerütes 1 wird in bekannter Weise das Rohr um seine Längsachse gedreht und um einen bestimmten Betrag vorgeschoben, der sich aus der Länge des Kalibers der Walzen ergibt. Jeder Vorschub bedeutet, daß das die Walzen des Kaltpilgerwalzgerüstes 1 verlassende Rohr um den Vorschubweg beschleunigt und zum Anhalten verzögert werden muß. Insbesondere dann, wenn bereits große Rohrlängen das Kaltpilgerwalzwerk verlassen haben, sind sehr große Massen zu beschleunigen und abzubremsen. Die Größe dieser Masse läßt sich dann begrenzen, wenn man das auslaufende Rohr hinter einer Pufferzone 4 von einem Treiber 5 ergreift, der mit konstanter Geschwindigkeit, die der mittleren Auslaufgeschwindigkeit des Rohres aus dem Kaltpilgerwalzgerüst 1 entspricht, transportiert und während dessen die absatzweise Vorwärtsbewegung des Rohres in der Pufferzone 4 aufnimmt. Nach der Erfindung ist diese Pufferzone so ausgebildet, daß bei einer S-förmigen Krümmung des Rohres in dieser Pufferzone 4 die Biegelinie des S-förmig gekrümmten Rohres veränderbar ist, und zwar in einem solchen Maße, daß die zyklisch schwankende Fertigrohrlängenveränderung in der S-förmigen Rohrstrecke aufgenommen wird.In FIG. 1, the cold pilger rolling mill is designated by 1, which, with the interposition of push rods 2, is driven by the drive 3 with gear and mass balance, the rollers of the cold pilger rolling mill 1 rolling on the pipe. In each case at the dead centers of the cold pilger rolling mill 1, the tube is rotated about its longitudinal axis in a known manner and advanced by a certain amount, which results from the length of the caliber of the rollers. Each feed means that the tube leaving the rollers of the cold pilger roll stand 1 must be accelerated by the feed path and decelerated to stop. Particularly when large lengths of pipe have already left the cold pilger mill, very large masses must be accelerated and braked. The size of this mass can then be limited if one grips the outgoing pipe behind a buffer zone 4 by a driver 5, which at a constant speed that the corresponds to the mean outlet speed of the tube from the cold pilger roll stand 1, transported and during which the batchwise forward movement of the tube in the buffer zone 4 picks up. According to the invention, this buffer zone is designed so that with an S-shaped curvature of the tube in this buffer zone 4, the bending line of the S-shaped tube can be changed to such an extent that the cyclically fluctuating change in finished tube length in the S-shaped Pipe section is added.

Wie in der Draufsicht in Figur 1 deutlich zu erkennen ist, ist der nachfolgende Haspel H in Linie hinter dem Kaltpilgerwalzgerüst 1 angeordnet, d. h. das Rohr wird nur geringfügig aus der Walzlinie und parallel zu dieser ausgelenkt. Dadurch sind die beim Stand der Technik großen Umlenkradien, die sehr viel Platz bedurften, vermieden, ohne daß die Speicherung der zyklisch das Kaltpilgerwalzgerüst verlassenden Rohrlänge nachteilig beeinflußt wird. Natürlich kann statt des Haspels H auch ein gerader Auslauf für die Rohre vorgesehen sein.As can be clearly seen in the plan view in FIG. 1, the following reel H is arranged in a line behind the cold pilger roll stand 1, i. H. the tube is only slightly deflected from the rolling line and parallel to it. This avoids the large deflection radii in the prior art, which required a lot of space, without the storage of the tube length leaving the cold pilger roll stand being adversely affected. Of course, instead of the reel H, a straight outlet for the pipes can also be provided.

Um die Vorrichtung an unterschiedliche Produktionsparameter anpassen zu können, ist die Pufferzone als mindestens dreiseitig geschlossener Führungskanal ausgebildet, in die eine verstellbare Führungswand 6 integrierbar ist, die anhand von Figur 2 näher beschrieben wird. Die Führungswand 6 ist zusammen mit einer Leitrolle 7 für das bei R angedeutete Rohr mit Hilfe der Kolben-Zylinder-Einheit 8 verstellbar, wobei die Endstellung gestrichelt dargestellt ist. Je nach Einstellung der Führungswand 6 lassen sich unterschiedliche Biegeverläufe des Rohres einstellen, die wiederum unterschiedliche Pufferwirkungen bei verschiedenen Rohren zeigen.In order to be able to adapt the device to different production parameters, the buffer zone is designed as a guide channel closed at least on three sides, into which an adjustable guide wall 6 can be integrated, which is described in more detail with reference to FIG. 2. The guide wall 6 can be adjusted together with a guide roller 7 for the tube indicated at R by means of the piston-cylinder unit 8, the end position being shown in dashed lines. Depending on the setting of the guide wall 6, different bending profiles of the pipe can be set, which in turn show different buffer effects with different pipes.

Der Treibapparat 5 ist geeignet, das fertiggewalzte Rohr aus dem Kaltpilgerwalzwerk herauszuziehen, ohne daß das Rohrende störende peitschende Bewegungen macht, wie dies beim Stand der Technik der Fall sein kann. Darüber hinaus ermöglicht der Treibapparat 5 die Zuführung auch sehr kurzer Rohre zu nachgeschalteten Einrichtungen, wie z. B. Haspeln H. Schließlich kann der Treibapparat 5 auch als zusätzliches Organ zur Erzwingung einer gleichmäßigen Bewegung des Fertigrohres eingesetzt werden, falls geringfügige Abweichungen von den eingestellten Parametern vorliegt. In jedem Fall ist eine genaue Regelung der Geschwindigkeit (Drehzahl) des Treibapparates 5 erforderlich, wie dies bereits beim Stand der Technik der Fall ist.The driving device 5 is suitable for pulling the finished-rolled pipe out of the cold pilger rolling mill without the pipe end making disruptive whipping movements, as can be the case in the prior art. In addition, the driver 5 allows the supply of very short tubes to downstream facilities such. B. reels H. Finally, the driving device 5 can also be used as an additional organ for forcing a uniform movement of the finished tube if there are slight deviations from the set parameters. In any case, precise regulation of the speed (speed) of the driving apparatus 5 is required, as is already the case in the prior art.

Es ist aber auch denkbar, den Treibapparat 5 zur automatischen Korrektur der Führungswand vorzusehen, wobei als Führungsgröße beispielsweise die über eine Rolle abgegriffene Geschwindigkeit des Rohres dienen kann.However, it is also conceivable to provide the driving device 5 for the automatic correction of the guide wall, the speed of the pipe, which is picked up via a roller, for example, can serve as a guide variable.

Der Funktionsablauf der dargestellten Vorrichtung ist wie folgt:
Der Rohranfang wird durch den Führungskanal 4 geleitet und von der Führungswand 6 umgelenkt. Diese ist in der in Figur 2 (mit durchgezogenen Linien) dargestellten Position eingestellt und wird in die gestrichelte dargestellte Lage geschwenkt, sobald der Rohranfang die Führungswand passiert hat. Im weiteren Verlauf wird der Rohranfang durch den Führungskanal in den Auslauf geleitet und vom Treiber erfaßt. Während des Walzbetriebes verändert das Rohr stetig seine S-förmig gekrümmte Biegelinie und speichert die zyklisch anfallenden Rohrlängen bei gleichmäßigem Abzug des Rohres im Treibapparat 5.
The functional sequence of the device shown is as follows:
The beginning of the pipe is passed through the guide channel 4 and deflected by the guide wall 6. This is set in the position shown in FIG. 2 (with solid lines) and is pivoted into the position shown in broken lines as soon as the beginning of the pipe has passed the guide wall. In the further course, the beginning of the pipe is led through the guide channel into the outlet and gripped by the driver. During the rolling operation, the tube constantly changes its S-shaped curved bending line and stores the cyclically occurring tube lengths in the driving apparatus 5 when the tube is evenly withdrawn.

Sobald das Rohr fertiggewalzt ist, wird es vom Treibapparat 5 komplett aus dem Kaltpilgerwalzgerüst und der Pufferzone herausgezogen. In dem Moment, wo das Rohrende aus dem Kaltpilgerwalzwerk austritt, kann die Führungswand 6 langsam in die (mit durchgezogenen Linien dargestellte) Ausgangsstellung zurückgefahren werden, so daß das Rohr in eine gestreckte Lage gelangt.As soon as the tube is finished rolled, the driving device 5 completely pulls it out of the cold pilger roll stand and the buffer zone. At the moment when the pipe end emerges from the cold pilger mill, the guide wall 6 can be slowly moved back into the starting position (shown with solid lines), so that the pipe reaches an extended position.

Claims (4)

Vorrichtung zum Abführen von kaltgewalzten Rohren hinter einem Kaltpilgerwalzwerk mit absatzweisem Vorschub und/oder Drehen des Rohres, bei der das Rohr zwischen der Walzzone und einem mit konstanter Geschwindigkeit arbeitenden Treiber in einer Pufferzone zum Ausgleich der zyklisch ungleichmäßigen Walzgeschwindigkeit aus der Walzrichtung ausgelenkt wird,
dadurch gekennzeichnet,
daß die Auslenkung des Rohres (R) zwangsgeführt S-förmig erfolgt.
Device for removing cold-rolled pipes behind a cold pilger rolling mill with batch feed and / or turning of the pipe, in which the pipe is deflected from the rolling direction between the rolling zone and a driver operating at constant speed in a buffer zone to compensate for the cyclically uneven rolling speed,
characterized,
that the deflection of the tube (R) is S-shaped.
Vorrichtung zum Abführen von kaltgewalzten Rohren nach Anspruch 1,
dadurch gekennzeichnet,
daß die Auslenkung des Rohres (R) in wechselnden Richtungen mit mehrfacher Umlenkung erfolgt.
Device for removing cold-rolled pipes according to claim 1,
characterized,
that the deflection of the tube (R) takes place in alternating directions with multiple deflection.
Vorrichtung zum Abführen von kaltgewalzten Rohren nach den Ansprüchen 1 und 2,
dadurch gekennzeichnet,
daß die Zwangsführung für das ausgelenkte Rohr (R) einstellbar ist.
Device for removing cold-rolled pipes according to claims 1 and 2,
characterized,
that the positive guidance for the deflected tube (R) is adjustable.
Vorrichtung zum Abführen von kaltgewalzten Rohren nach den Ansprüchen 1 bis 3,
dadurch gekennzeichnet,
daß die Auslenkung des Rohres (R) an einer verstellbaren Führungswand (6) innerhalb eines mindestens dreiseitig geschlossenen Führungskanales (4) erfolgt, die quer zum Führungskanal in Auslenkrichtung des Rohres (R) einstellbar ist.
Device for removing cold-rolled pipes according to claims 1 to 3,
characterized,
that the deflection of the tube (R) takes place on an adjustable guide wall (6) within an at least three-sided closed guide channel (4) which is adjustable transversely to the guide channel in the direction of deflection of the tube (R).
EP94250291A 1993-12-27 1994-12-05 Method and device for discharging of cold rolled tubes after a cold pilger mill Expired - Lifetime EP0659494B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4344942A DE4344942A1 (en) 1993-12-27 1993-12-27 Device for removing cold-rolled pipes behind a cold pilger rolling mill
DE4344942 1993-12-27

Publications (3)

Publication Number Publication Date
EP0659494A2 true EP0659494A2 (en) 1995-06-28
EP0659494A3 EP0659494A3 (en) 1995-09-06
EP0659494B1 EP0659494B1 (en) 1998-03-18

Family

ID=6506510

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94250291A Expired - Lifetime EP0659494B1 (en) 1993-12-27 1994-12-05 Method and device for discharging of cold rolled tubes after a cold pilger mill

Country Status (8)

Country Link
US (1) US5606885A (en)
EP (1) EP0659494B1 (en)
JP (1) JPH07204710A (en)
CN (1) CN1108973A (en)
AT (1) ATE164100T1 (en)
CZ (1) CZ286203B6 (en)
DE (2) DE4344942A1 (en)
ES (1) ES2113611T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1293268A1 (en) * 2001-09-12 2003-03-19 SMS Meer GmbH Method for operating a cold pilger rolling mill and cold pilger rolling mill
CN102728626A (en) * 2012-06-14 2012-10-17 太原重工股份有限公司 Horizontal moving device for capillary pipe and pilger mill set having same device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19620161C2 (en) * 1996-05-08 2003-06-12 Sms Demag Ag Process for rolling pipes
DE102009045640A1 (en) * 2009-10-13 2011-04-14 Sandvik Materials Technology Deutschland Gmbh rewinder
US20110100082A1 (en) * 2009-10-29 2011-05-05 Morgan Construction Company Side Looper

Citations (3)

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Publication number Priority date Publication date Assignee Title
US1752841A (en) * 1925-05-16 1930-04-01 Morgan Construction Co Looping trough for rolling mills
DE1880718U (en) * 1959-09-12 1963-10-17 Ilseder Huette SINGLE TABLE.
DE3146284C2 (en) * 1981-11-19 1985-10-31 Mannesmann AG, 4000 Düsseldorf Process for discharging cold-rolled tubes, especially long lengths

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942505A (en) * 1953-12-23 1960-06-28 Copperweld Steel Co Horizontally movable feed table
DE2449862C3 (en) * 1974-10-17 1979-02-01 Mannesmann Ag, 4000 Duesseldorf Feed device for cold pilger mills loaded from the rear

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1752841A (en) * 1925-05-16 1930-04-01 Morgan Construction Co Looping trough for rolling mills
DE1880718U (en) * 1959-09-12 1963-10-17 Ilseder Huette SINGLE TABLE.
DE3146284C2 (en) * 1981-11-19 1985-10-31 Mannesmann AG, 4000 Düsseldorf Process for discharging cold-rolled tubes, especially long lengths

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1293268A1 (en) * 2001-09-12 2003-03-19 SMS Meer GmbH Method for operating a cold pilger rolling mill and cold pilger rolling mill
DE10144887C1 (en) * 2001-09-12 2003-04-24 Sms Meer Gmbh Method for operating a cold pilger rolling mill and cold pilger rolling mill
CN102728626A (en) * 2012-06-14 2012-10-17 太原重工股份有限公司 Horizontal moving device for capillary pipe and pilger mill set having same device

Also Published As

Publication number Publication date
EP0659494A3 (en) 1995-09-06
CN1108973A (en) 1995-09-27
DE4344942A1 (en) 1995-06-29
ES2113611T3 (en) 1998-05-01
JPH07204710A (en) 1995-08-08
ATE164100T1 (en) 1998-04-15
DE59405472D1 (en) 1998-04-23
EP0659494B1 (en) 1998-03-18
CZ286203B6 (en) 2000-02-16
CZ331294A3 (en) 1996-04-17
US5606885A (en) 1997-03-04

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