EP2038076A1 - Method and device for rolling up a metallic strip - Google Patents

Method and device for rolling up a metallic strip

Info

Publication number
EP2038076A1
EP2038076A1 EP07725970A EP07725970A EP2038076A1 EP 2038076 A1 EP2038076 A1 EP 2038076A1 EP 07725970 A EP07725970 A EP 07725970A EP 07725970 A EP07725970 A EP 07725970A EP 2038076 A1 EP2038076 A1 EP 2038076A1
Authority
EP
European Patent Office
Prior art keywords
driver
strip
band
bending moment
tape
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07725970A
Other languages
German (de)
French (fr)
Other versions
EP2038076B1 (en
Inventor
Heinz-Adolf MÜLLER
Olaf Norman Jepsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Demag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP2038076A1 publication Critical patent/EP2038076A1/en
Application granted granted Critical
Publication of EP2038076B1 publication Critical patent/EP2038076B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/02—Winding-up or coiling
    • B21C47/04—Winding-up or coiling on or in reels or drums, without using a moving guide

Definitions

  • the invention relates to a method for winding a metallic strip, in particular a steel strip, into a collar, the strip being guided between a driver consisting of at least one driver top roller and at least one driver lower roller, and a winding mandrel, and the strip on the winding mandrel being guided to the latter Bund is wound up. Furthermore, the invention relates to a device for winding a metallic strip.
  • a hot strip reel is arranged at the end of a hot strip mill. This has the function of winding the hot strip after rolling into a bundle.
  • the tape is wound up under tension in order to obtain a sufficiently tightly wound waistband and to avoid cracking of the waistband after the finish winding.
  • the tension is also necessary to bend the band around the winding mandrel, i. H. plastically deform. In particular, in thick bands while large tensile forces are required to produce the necessary bending moment for the plastic deformation.
  • a driver 3 which consists of a drive upper roller 4 and a drive sub roller 5; the tape is guided by the driver 3 to the winding mandrel 6.
  • the tape 1 is wound until a collar 2 has formed.
  • the collar 2 is pulled after complete winding of the belt 1 from the winding mandrel 6.
  • a defined tension in the band 1 is maintained between the driver 3 and the winding mandrel 6.
  • bundles 2 are wrapped with steel straps.
  • JP 0708 0531 A attempts to influence band bending by driving one driver roll faster than the other, resulting in band bending. This principle is also used in JP 0707 5830 A.
  • JP 5805 8931 A uses a number of bending rollers to improve the installation of the band end on the federal government, the bending rollers attack directly on the federal government.
  • the invention is therefore based on the object, a method and a device of the type mentioned in such a way that the mentioned disadvantages can be avoided or at least reduced. It should therefore be ensured in a simple manner that the wound on the winding mandrel to the federal government no longer dissolves, but the band end rests firmly on the federal government. This should be done in a simple manner and therefore inexpensive. In particular, it should be possible to dispense with the enclosure of the wound federal by the said steel bands.
  • the solution of this edition by the invention according to the method is characterized in that when reaching a defined residual length of the tape, in particular in front of the driver, in the band acting around a transversely to the longitudinal direction of the tape and inducing a plastic deformation inducing bending moment is initiated.
  • the bending moment can preferably be initiated in the area between the driver and the winding mandrel. In principle, however, it is also possible for the bending moment to be introduced into the strip before the driver, so that it is subjected to a plastic deformation or curvature. The bending moment thereby curves the band in the sense, as it is arranged on the winding mandrel.
  • At least one driver top roller of the driver can be moved in the rolling direction and lowered perpendicular to the surface of the belt.
  • the strip is held down in a direction upstream of the rolling direction in the direction perpendicular to the surface of the strip.
  • the driver lower roller of the driver is moved in the rolling direction and raised perpendicular to the surface of the belt to generate the bending moment.
  • the band would preferably be held up at a position upstream of the rolling direction in the direction perpendicular to the surface of the band.
  • An alternative approach is based on the fact that a number of rollers between the driver and the winding mandrel are moved on both sides of the belt to generate the bending moment.
  • the device for winding a metallic strip, in particular a steel strip, into a collar has a driver with at least one driver top roller and at least one driver lower roller and a spindle mandrel, the strip being located between the driver and the winding mandrel Longitudinal tension is maintained and wherein the tape is wound on the winding mandrel to the collar.
  • means are provided for initiating a bending moment acting transversely to the longitudinal direction of the strip and causing a plastic deformation, which are activated by control means as soon as a defined residual length of the strip has been reached, i. H. which become active when the end of the tape reaches a defined position.
  • the means may comprise at least one actuator, with which the driver upper roller and / or the lower driver roller can be moved in the rolling direction and lowered or raised perpendicular to the surface of the belt.
  • the means may also comprise a number of rollers, which can be moved on both sides of the tape between the driver and the winding mandrel.
  • the core of the invention is thus a method and apparatus for targeted bending of the metal strip at the end of the tape, wherein the aim is that the residual tension in the band is adjusted so that the outer turn of the band (ie the end of the tape) rests firmly on the collar.
  • the aim is that the residual tension in the band is adjusted so that the outer turn of the band (ie the end of the tape) rests firmly on the collar.
  • Fig. 1 shows a device for winding a steel strip after the
  • Fig. 5 shows an alternative device for winding the steel strip according to the invention
  • Fig. 6 shows another alternative device for winding the steel strip according to the invention.
  • the apparatus shown in Fig. 4 for winding the steel strip 1 has - as in the prior art - a driver 3 with driver top roller 4 and drive roller 5 and a winding mandrel 6 on which the tape 1 is wound to the collar 2.
  • the driver upper roller 4 In normal winding operation, the driver upper roller 4 is in the position shown in dashed lines.
  • the two driver rollers 4, 5 are pressed against one another so that the band 1 between the driver 3 and the winding mandrel 6 can preferably be kept below a defined tensile stress. This tension ensures that a perfect winding of the tape 1 on the winding mandrel 6 is possible. If necessary, the winding of the tape is also possible with very little or even no tension.
  • the tape end 16 out of the range of the driver 3, the last band portion is precessed so that it rests against the collar 2 and thus unwanted winding of the Federal 2 is prevented.
  • the positioning of the upper driving roller 4 depends on the desired effect, which is chosen so that in the final state, the outermost turn of the band 1 is well on the collar 2.
  • the illustrated device serves to bend the tape end or the last portion of the tape end, wherein the hold-down roller 17, the driver sub-roll 5 and the driver top roller 4 is used.
  • the driver upper roller 4 is moved to bending in the rolling direction W and adjusted in height.
  • the bending radius can thus be set arbitrarily according to the above objective.
  • the initiation of the bending moment MB starts at a certain point in the band 1 predetermined by the tape tracking. Then the driving upper roller 4 is set to a predetermined position so that a desired bending radius is reached, but the Anstellicide for the driver role is not too large. At the end of the tape 16, the tape tension between the driver 3 and winding mandrel 6 is reduced in order to avoid bending back of the tape. The work for feeding the tape 1 and plastically bending the portion of the tape end is applied by the driver 3.
  • the three rollers 7, 8, 9 are arranged in the rolling direction W in front of the driver 3, they can in principle be positioned behind the driver 3, as shown in FIG. 6.
  • the band 1 the bending moment M B abandoned, which is done to a plastic deformation of the band 1 in the sense of curvature, as it is present in the wound state on the collar 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Metal Rolling (AREA)
  • Manufacturing Of Electric Cables (AREA)

Abstract

The invention relates to a method for rolling up a metallic strip (1), in particular a steel strip, to a coil (2), the strip (1) being kept under longitudinal tension between a driver (3), consisting of at least one driver top roll (4) and at least one driver bottom roll (5), and a winding pin (6). The strip (1) is rolled up on the winding pin (6) to form the coil (2). In order to prevent the undesired opening of the wound coil in a simple manner, a bending moment (MB) is initiated in the strip, said bending moment acting perpendicular to the longitudinal direction of the strip (1) and causing a plastic deformation when a defined remaining length of the strip (1) is reached. The invention also relates to a device for rolling up a metallic strip.

Description

Verfahren und Vorrichtung zum Aufwickeln eines metallischen Bandes Method and device for winding a metallic strip
Die Erfindung betrifft ein Verfahren zum Aufwickeln eines metallischen Bandes, insbesondere eines Stahlbandes, zu einem Bund, wobei das Band zwischen einem Treiber, bestehend aus mindestens einer Treiberoberrolle und mindestens einer Treiberunterrolle, und einem Wickeldorn geführt wird und wobei das Band auf dem Wickeldorn zu dem Bund aufgewickelt wird. Des weiteren betrifft die Erfindung eine Vorrichtung zum Aufwickeln eines metallischen Bandes.The invention relates to a method for winding a metallic strip, in particular a steel strip, into a collar, the strip being guided between a driver consisting of at least one driver top roller and at least one driver lower roller, and a winding mandrel, and the strip on the winding mandrel being guided to the latter Bund is wound up. Furthermore, the invention relates to a device for winding a metallic strip.
Am Ende einer Warmbandstraße ist eine Warmbandhaspel angeordnet. Diese hat die Funktion, das Warmband nach dem Walzen zu einem Bund aufzuwickeln. Das Band wird dabei unter Zugspannung aufgewickelt, um ein ausreichend fest gewickeltes Bund zu erhalten und ein Aufspringen des Bundes nach dem Fertigwickeln zu vermeiden. Die Zugspannung ist auch notwendig, um das Band um den Wickeldorn zu biegen, d. h. plastisch zu verformen. Insbesondere bei dicken Bändern sind dabei große Zugkräfte erforderlich, um das nötige Biegemoment für die plastische Umformung zu erzeugen.At the end of a hot strip mill a hot strip reel is arranged. This has the function of winding the hot strip after rolling into a bundle. The tape is wound up under tension in order to obtain a sufficiently tightly wound waistband and to avoid cracking of the waistband after the finish winding. The tension is also necessary to bend the band around the winding mandrel, i. H. plastically deform. In particular, in thick bands while large tensile forces are required to produce the necessary bending moment for the plastic deformation.
In den Figuren 1 bis 3 sind Lösungen und Probleme des Standes der Technik dargestellt.In the figures 1 to 3 solutions and problems of the prior art are shown.
Wie in Fig. 1 gesehen werden kann, wird beim Wickeln des Bandes 1 dieses durch einen Treiber 3 geführt, der aus einer Trieberoberrolle 4 und einer Treiberunterrolle 5 besteht; das Band wird vom Treiber 3 zum Wickeldorn 6 geführt. Auf dem Wickeldom 6 wird das Band 1 gewickelt, bis sich ein Bund 2 gebildet hat. Das Bund 2 wird nach vollständigem Aufwickeln des Bandes 1 vom Wickeldorn 6 gezogen. Während des Wickeins wird zwischen dem Treiber 3 und dem Wickeldorn 6 eine definierte Zugspannung im Band 1 aufrechterhalten.As can be seen in Fig. 1, when winding the tape 1, this is guided by a driver 3, which consists of a drive upper roller 4 and a drive sub roller 5; the tape is guided by the driver 3 to the winding mandrel 6. On the winding mandrel 6, the tape 1 is wound until a collar 2 has formed. The collar 2 is pulled after complete winding of the belt 1 from the winding mandrel 6. During winding, a defined tension in the band 1 is maintained between the driver 3 and the winding mandrel 6.
Verlässt das Bandende den Treiber 3, kann das letzte Bandstück nicht mehr unter Zugspannung gewickelt werden. Um das Bandende in dieser Phase an das Bund 2 anzulegen, werden rechtzeitig vorher ein Bundwagen 14 (angedeutet durch zwei Rollen dieses Wagens) und eine oder mehrere Andrückrollen 15 an das Bund 2 angelegt. Trotz der plastischen Biegung des Bandes 1 verbleibt eine elastische Restspannung im Band 1 , die dazu führt, dass das Bandende 16 vom Bund 2 absteht, wie es in Fig. 2 illustriert ist.Leaves the tape end the driver 3, the last piece of tape can not be wound under tension. To the end of the tape at this stage To put on the collar 2, a coil car 14 (indicated by two rollers of this car) and one or more pressure rollers 15 are applied to the collar 2 in good time beforehand. Despite the plastic bending of the band 1 remains an elastic residual stress in the band 1, which causes the band end 16 protrudes from the collar 2, as illustrated in Fig. 2.
Besonders bei dicken Bändern 1 mit Banddicken von mehr als 12 mm besteht beim Weitertransport oder beim Kippen des Bundes 2 die Gefahr, dass das Bund 2 aufspringt und sich die letzten Windungen lösen, wie es in Fig. 3 angedeutet ist.Especially with thick bands 1 with band thicknesses of more than 12 mm, the further transport or tilting of the collar 2 there is a risk that the collar 2 springs open and the last turns solve, as indicated in Fig. 3.
Ist ein Bund in dieser Weise aufgesprungen, lässt es sich nicht mehr mit einfachen Mitteln wieder fest wickeln; in der Regel ist es dann Ausschuss.If a covenant has broken up in this way, it can no longer be wrapped up with simple means; usually it is then committee.
Um dies zu vermeiden, werden Bunde 2 mit Stahlbändern umwickelt. Je dicker und fester das Material des Bandes 1 ist, umso mehr Stahlbänder sind notwendig, um das Bund sicher zusammenzuhalten. Bei Banddicken von mehr als 12 mm kann dies eine große Anzahl an Stahlbändern erfordern.To avoid this, bundles 2 are wrapped with steel straps. The thicker and stronger the material of the band 1, the more steel bands are necessary to hold the collar securely together. For strip thicknesses greater than 12 mm, this may require a large number of steel strips.
Aus der EP 0 906 797 B1 wird das aufzuwickelnde Stahlband durch eine An- zahl zusammenwirkender Rollen geführt, die auch zwischen dem Treiber und dem Wickeldorn angeordnet sein können. Allerdings sind diese Rollen ortsunveränderlich angeordnet, so dass sie eine Umformung des Bandes unabhängig von der Lage des Bandendes vornehmen.From EP 0 906 797 B1, the steel strip to be wound is guided through a number of cooperating rollers, which can also be arranged between the driver and the winding mandrel. However, these roles are arranged immovable so that they make a transformation of the tape regardless of the position of the tape end.
Die JP 0708 0531 A versucht, auf die Bandbiegung dadurch Einfluss zu nehmen, dass die eine Treiberrolle schneller angetrieben wird als die andere, was zu einer Bandbiegung führt. Dieses Prinzip wird auch in der JP 0707 5830 A eingesetzt. Die JP 5805 8931 A setzt eine Anzahl Biegerollen ein, um die Anlage des Bandendes am Bund zu verbessern, wobei die Biegerollen direkt am Bund angreifen.JP 0708 0531 A attempts to influence band bending by driving one driver roll faster than the other, resulting in band bending. This principle is also used in JP 0707 5830 A. JP 5805 8931 A uses a number of bending rollers to improve the installation of the band end on the federal government, the bending rollers attack directly on the federal government.
Alle vorbekannten Möglichkeiten stellen - sofern sie versuchen, gezielt auf die Bandbiegung im Endbereich des Metallbandes Einfluss zu nehmen - einen relativ hohen apparativen und steuerungstechnischen Aufwand dar. Das Ergebnis ist dennoch nicht immer befriedigend.All previously known possibilities - if they attempt to influence the band bending in the end region of the metal strip in a targeted manner - represent a relatively high expenditure in terms of apparatus and control technology. The result is nevertheless not always satisfactory.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine Vor- richtung der eingangs genannten Art so weiterzubilden, dass die genannten Nachteile vermieden oder zumindest reduziert werden können. Es soll also auf einfache Weise sichergestellt werden, dass sich das auf den Wickeldorn zum Bund aufgewickelte Band nicht mehr löst, sondern das Bandende fest am Bund anliegt. Dies soll in apparativ einfacher Weise und damit kostengünstig erfolgen können. Es soll insbesondere auf die Einfassung des gewickelten Bundes durch die genannten Stahlbänder verzichtet werden können.The invention is therefore based on the object, a method and a device of the type mentioned in such a way that the mentioned disadvantages can be avoided or at least reduced. It should therefore be ensured in a simple manner that the wound on the winding mandrel to the federal government no longer dissolves, but the band end rests firmly on the federal government. This should be done in a simple manner and therefore inexpensive. In particular, it should be possible to dispense with the enclosure of the wound federal by the said steel bands.
Die Lösung dieser Ausgabe durch die Erfindung ist verfahrensgemäß dadurch gekennzeichnet, dass bei Erreichen einer definierten Restlänge des Bandes, insbesondere vor dem Treiber, in das Band ein um eine quer zur Längsrichtung des Bandes wirkendes und eine plastische Verformung hervorrufendes Biegemoment eingeleitet wird. Das Biegemoment kann bevorzugt im Bereich zwischen dem Treiber und dem Wickeldorn eingeleitet werden. Grundsätzlich ist es aber auch möglich, dass bereits vor dem Treiber das Biegemoment in das Band eingeleitet wird, so dass es einer plastischen Verformung bzw. Krümmung unterzogen wird. Das Biegemoment krümmt dabei das Band in dem Sinne, wie es auf dem Wickeldorn angeordnet ist. Damit wird quasi eine Krümmung vorgehalten, so dass nach dem vollständigen Aufwickeln des Bandes auf den Wickeldorn die äußerste Windung bzw. die äußersten Windungen fest am Bundum- fang anliegen und nicht zum Aufspringen tendieren. Zur Erzeugung des Biegemoments kann nach einer bevorzugt Ausgestaltung der Erfindung mindestens eine Treiberoberrolle des Treibers in Walzrichtung verfahren und senkrecht zur Oberfläche des Bandes abgesenkt werden. In diesem Falle kann vorgesehen sein, dass das Band an einer in Walzrichtung vorgelagerten Stelle in Richtung senkrecht zur Oberfläche des Bandes nieder- gehalten wird.The solution of this edition by the invention according to the method is characterized in that when reaching a defined residual length of the tape, in particular in front of the driver, in the band acting around a transversely to the longitudinal direction of the tape and inducing a plastic deformation inducing bending moment is initiated. The bending moment can preferably be initiated in the area between the driver and the winding mandrel. In principle, however, it is also possible for the bending moment to be introduced into the strip before the driver, so that it is subjected to a plastic deformation or curvature. The bending moment thereby curves the band in the sense, as it is arranged on the winding mandrel. As a result, a curvature is held up, as it were, so that after the tape has been completely wound onto the winding mandrel, the outermost turn or outermost turns lie firmly against the waistband and do not tend to pop up. To generate the bending moment, according to a preferred embodiment of the invention, at least one driver top roller of the driver can be moved in the rolling direction and lowered perpendicular to the surface of the belt. In this case, it may be provided that the strip is held down in a direction upstream of the rolling direction in the direction perpendicular to the surface of the strip.
Es ist auch möglich, dass zur Erzeugung des Biegemoments die Treiberunterrolle des Treibers in Walzrichtung verfahren und senkrecht zur Oberfläche des Bandes angehoben wird. In diesem Falle würde bevorzugt das Band an einer in Walzrichtung vorgelagerten Stelle in Richtung senkrecht zur Oberfläche des Bandes hochgehalten werden.It is also possible that the driver lower roller of the driver is moved in the rolling direction and raised perpendicular to the surface of the belt to generate the bending moment. In this case, the band would preferably be held up at a position upstream of the rolling direction in the direction perpendicular to the surface of the band.
Eine alternative Vorgehensweise stellt darauf ab, dass zur Erzeugung des Biegemoments eine Anzahl Walzen zwischen dem Treiber und dem Wickeldorn beidseitig an das Band herangefahren werden.An alternative approach is based on the fact that a number of rollers between the driver and the winding mandrel are moved on both sides of the belt to generate the bending moment.
All diese Maßnahmen dienen dazu, ein Biegemoment in das Band einzuleiten, das eine plastische Vorkrümmung verursacht, so dass nach dem vollständigen Aufwickeln des Bandes auf den Bund ein Aufspringen der äußersten Bandwin- düngen verhindert wird.All these measures serve to induce a bending moment in the strip, which causes a plastic pre-curvature, so that after complete winding of the strip on the collar, a popping of the outermost band wound is prevented.
Damit sich das Band nach der plastischen Vorkrümmung infolge des eingeleiteten Biegemoments nicht wieder plastisch aufbiegt, sieht eine bevorzugte Fortbildung vor, dass die Längsspannung im Band bei oder nach der Aufbringung des Biegemoments vermindert wird.So that the band does not plastically rebound after the plastic pre-curvature due to the induced bending moment, a preferred further development provides that the longitudinal tension in the band is reduced during or after the application of the bending moment.
Die Vorrichtung zum Aufwickeln eines metallischen Bandes, insbesondere eines Stahlbandes, zu einem Bund, weist einen Treiber mit mindestens einer Treiberoberrolle und mindestens einer Treiberunterrolle auf sowie einen Wi- ckeldorn, wobei das Band zwischen dem Treiber und dem Wickeldorn unter Längsspannung gehalten wird und wobei das Band auf dem Wickeldorn zu dem Bund aufgewickelt wird.The device for winding a metallic strip, in particular a steel strip, into a collar, has a driver with at least one driver top roller and at least one driver lower roller and a spindle mandrel, the strip being located between the driver and the winding mandrel Longitudinal tension is maintained and wherein the tape is wound on the winding mandrel to the collar.
Erfindungsgemäß sind Mittel zur Einleitung eines quer zur Längsrichtung des Bandes wirkenden und eine plastische Verformung hervorrufenden Biegemo- ments vorgesehen, die von Steuerungsmitteln aktiviert werden, sobald eine definierte Restlänge des Bandes erreicht ist, d. h. die dann aktiv werden, wenn das Bandende eine definierte Position erreicht.According to the invention, means are provided for initiating a bending moment acting transversely to the longitudinal direction of the strip and causing a plastic deformation, which are activated by control means as soon as a defined residual length of the strip has been reached, i. H. which become active when the end of the tape reaches a defined position.
Die Mittel können mindestens einen Aktuator umfassen, mit dem die Treiber- oberrolle und/oder die Treiberunterrolle in Walzrichtung verfahren und senkrecht zur Oberfläche des Bandes abgesenkt oder angehoben werden kann.The means may comprise at least one actuator, with which the driver upper roller and / or the lower driver roller can be moved in the rolling direction and lowered or raised perpendicular to the surface of the belt.
Die Mittel können auch eine Anzahl Walzen umfassen, die zwischen dem Treiber und dem Wickeldorn beidseitig an das Band herangefahren werden können.The means may also comprise a number of rollers, which can be moved on both sides of the tape between the driver and the winding mandrel.
Kern der Erfindung ist also ein Verfahren und eine Vorrichtung zum gezielten Biegen des Metallbandes am Bandende, wobei angestrebt wird, dass die Restspannung im Band so eingestellt wird, dass die äußere Windung des Bandes (also das Bandende) fest am Bund anliegt. Hierdurch kann die Anzahl der Stahlbänder zum Binden der Bunde reduziert und der Weitertransport sowie das Kippen der Bunde sicherer gemacht werden.The core of the invention is thus a method and apparatus for targeted bending of the metal strip at the end of the tape, wherein the aim is that the residual tension in the band is adjusted so that the outer turn of the band (ie the end of the tape) rests firmly on the collar. As a result, the number of steel strips for binding the bundles can be reduced and the further transport and tilting of the bundles can be made more secure.
In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigen:In the drawings, embodiments of the invention are shown. Show it:
Fig. 1 eine Vorrichtung zum Aufwickeln eines Stahlbandes nach demFig. 1 shows a device for winding a steel strip after the
Stand der Technik mit einem Treiber und einem Wickeldorn, auf dem das Stahlband zu einem Bund aufgewickelt wird,Prior art with a driver and a winding mandrel on which the steel strip is wound into a bundle,
Fig. 2 das vollständig auf den Wickeldorn aufgewickelte Stahlband gemäß dem Stand der Technik, Fig. 3 den nach dem Stand der Technik gewickelten Bund, von dem sich das Bandende wieder gelöst hat,2 shows the completely wound on the winding mandrel steel strip according to the prior art, 3 shows the wound according to the prior art collar from which the tape end has loosened again,
Fig. 4 eine Vorrichtung zum Aufwickeln eines Stahlbandes in einer erfin- dungsgemäßen Ausgestaltung,4 shows a device for winding a steel strip in an embodiment according to the invention,
Fig. 5 eine alternative Vorrichtung zum Aufwickeln des Stahlbandes gemäß der Erfindung undFig. 5 shows an alternative device for winding the steel strip according to the invention and
Fig. 6 eine weitere alternative Vorrichtung zum Aufwickeln des Stahlbandes gemäß der Erfindung.Fig. 6 shows another alternative device for winding the steel strip according to the invention.
Die in Fig. 4 dargestellte Vorrichtung zum Aufwickeln des Stahlbandes 1 hat - wie im Stand der Technik - einen Treiber 3 mit Treiberoberrolle 4 und Treiber- oberrolle 5 und einen Wickeldorn 6, auf den das Band 1 zum Bund 2 aufgewickelt wird.The apparatus shown in Fig. 4 for winding the steel strip 1 has - as in the prior art - a driver 3 with driver top roller 4 and drive roller 5 and a winding mandrel 6 on which the tape 1 is wound to the collar 2.
Im normalen Wickelbetrieb befindet sich die Treiberoberrolle 4 in der gestrichelt dargestellten Position. Die beiden Treiberrollen 4, 5 werden aneinander ge- drückt, so dass das Band 1 zwischen dem Treiber 3 und dem Wickeldorn 6 vorzugsweise unter einer definierten Zugspannung gehalten werden kann. Diese Zugspannung sorgt dafür, dass ein einwandfreies Aufwickeln des Bandes 1 auf den Wickeldorn 6 möglich ist. Notfalls ist das Aufwickeln des Bandes jeweils auch mit sehr geringer oder sogar ohne Zugspannung möglich.In normal winding operation, the driver upper roller 4 is in the position shown in dashed lines. The two driver rollers 4, 5 are pressed against one another so that the band 1 between the driver 3 and the winding mandrel 6 can preferably be kept below a defined tensile stress. This tension ensures that a perfect winding of the tape 1 on the winding mandrel 6 is possible. If necessary, the winding of the tape is also possible with very little or even no tension.
Problematisch wird es, wenn das Bandende erreicht ist, so dass das Band 1 aus der Klemmung zwischen der Treiberoberrolle 4 und der Treiberunterrolle 5 heraus gerät. Dann nämlich kann nur noch über den in Fig. 1 dargestellten Bundwagen 14 und die Andrückrollen 15 dafür gesorgt werden, dass sich das Bandende und namentlich die letzten Windungen an den Bund 2 anlegen. Die Erfindung geht im Ausführungsbeispiel nach Fig. 4 statt dessen folgenden Weg: Das Erreichen des Bandendes 16 wird mit einem Sensor 13 erkannt, der sein Signal an die Steuerungsmittel 10 leitet. Die Steuerungsmittel 10 geben Stellsignale an zwei Aktuatoren 11 und 12 aus. Diese bewegen die Treiberoberrolle 4 in Walzrichtung W nach vorne und gleichzeitig nach unten, d. h. in die mit ausgezogenen Linien dargestellte Position. Eine in Walzrichtung vor dem Treiber 3 angeordnete Niederhalterolle 17 sorgt dafür, dass das Band 1 infolge der Verstellung der Treiberoberrolle 4 nicht nach oben abheben kann. Vielmehr wird durch die insgesamt drei Rollen 4, 5 und 17 in das Band 1 ein Biegemoment M8 eingeleitet, das - wie es in Fig. 4 angedeutet ist - quer zur Längsrich- tung des Bandes 1 liegt (der Momentenvektor steht senkrecht auf der Zeichenebene) und das so gewählt ist, dass es zu einer plastischen Biegeverformung des Bandes 1 kommt. Das Band 1 wird dabei in dem Sinne plastisch verformt und gekrümmt, wie es dem Aufwickeln auf den Wickeldorn entspricht.It is problematic when the tape end is reached, so that the tape 1 from the clamping device between the driver upper roller 4 and the drive sub-roller 5 out. Then namely, it can only be ensured via the coil carriage 14 and the pressure rollers 15 shown in FIG. 1 that the end of the tape and, in particular, the last windings rest against the collar 2. The invention goes in the embodiment of FIG. 4 instead of the following way: The achievement of the band end 16 is detected by a sensor 13, which passes its signal to the control means 10. The control means 10 output actuating signals to two actuators 11 and 12. These move the driver upper roller 4 in the rolling direction W forward and at the same time downwards, ie in the position shown in solid lines. An arranged in the rolling direction in front of the driver 3 hold-down roller 17 ensures that the tape 1 can not lift up due to the adjustment of the driver upper roller 4. Rather, a bending moment M 8 is introduced into the strip 1 by the three rollers 4, 5 and 17 which, as indicated in FIG. 4, lies transversely to the longitudinal direction of the strip 1 (the moment vector is perpendicular to the plane of the drawing ) and which is chosen so that it comes to a plastic bending deformation of the belt 1. The band 1 is plastically deformed and curved in the sense, as it corresponds to the winding on the winding mandrel.
Gerät das Bandende 16 aus dem Bereich des Treibers 3 heraus, ist der letzte Bandabschnitt so vorgekrümmt, dass er sich an den Bund 2 anlegt und damit ein unerwünschtes Aufwickeln des Bundes 2 verhindert wird. Die Positionierung der Treiberoberrolle 4 hängt vom gewünschten Effekt ab, der so gewählt wird, dass im Endzustand die äußerste Windung des Bandes 1 gut am Bund 2 an- liegt.Device, the tape end 16 out of the range of the driver 3, the last band portion is precessed so that it rests against the collar 2 and thus unwanted winding of the Federal 2 is prevented. The positioning of the upper driving roller 4 depends on the desired effect, which is chosen so that in the final state, the outermost turn of the band 1 is well on the collar 2.
Die dargestellte Vorrichtung dient also zum Biegen des Bandendes bzw. des letzten Bereichs des Bandendes, wobei die Niederhalterolle 17, die Treiberunterrolle 5 und die Treiberoberrolle 4 zum Einsatz kommt. Die Treiberoberrolle 4 wird zum Biegen in Walzrichtung W verfahren und in der Höhe verstellt. Der Biegeradius kann gemäß der obigen Zielsetzung somit beliebig eingestellt werden.Thus, the illustrated device serves to bend the tape end or the last portion of the tape end, wherein the hold-down roller 17, the driver sub-roll 5 and the driver top roller 4 is used. The driver upper roller 4 is moved to bending in the rolling direction W and adjusted in height. The bending radius can thus be set arbitrarily according to the above objective.
Das Einleiten des Biegemoments MB beginnt an einer bestimmten, durch die Bandverfolgung vorgegebenen Stelle im Band 1. Dann wird die Treiberoberrolle 4 auf eine vorgegebene Position gestellt, damit ein gewünschter Biegeradius erreicht wird, die Anstellkräfte für die Treiberrolle jedoch nicht zu groß werden. Zum Bandende 16 wird der Bandzug zwischen Treiber 3 und Wickeldorn 6 reduziert, um ein Rückbiegen des Bandes zu vermeiden. Die Arbeit zum Vorschub des Bandes 1 und zum plastischen Biegen des Bereichs des Bandendes wird durch den Treiber 3 aufgebracht.The initiation of the bending moment MB starts at a certain point in the band 1 predetermined by the tape tracking. Then the driving upper roller 4 is set to a predetermined position so that a desired bending radius is reached, but the Anstellkräfte for the driver role is not too large. At the end of the tape 16, the tape tension between the driver 3 and winding mandrel 6 is reduced in order to avoid bending back of the tape. The work for feeding the tape 1 and plastically bending the portion of the tape end is applied by the driver 3.
In der Ausführungsform der Erfindung nach Fig. 5 werden - sobald das Bandende 16 von einem (hier nicht dargestellten) Sensor detektiert wird, die drei Rollen 7, 8 und 9, die vorher kein Biegemoment im Band erzeugen, in die dargestellte Position gefahren. Hiermit erfolgt ebenfalls wieder eine plastische Bandvorverformung infolge des erzeugten Biegemomentes MB, SO dass das Band 1 , nachdem es den Bereich des Treibers 3 verlassen hat, sich gut an den Bund 2 anlegt und die äußerste Bandwindung nicht zum Aufspringen neigt.In the embodiment of the invention shown in FIG. 5 - as soon as the tape end 16 is detected by a sensor (not shown), the three rollers 7, 8 and 9, which previously generate no bending moment in the band, are moved to the position shown. This is also again a plastic band pre-deformation due to the generated bending moment MB, SO that the band 1, after it has left the area of the driver 3, fits well to the collar 2 and the outermost band winding does not tend to jump.
Bei der Lösung gemäß Fig. 5 wird ein Teil des Rollenganges, nämlich die RoI- len 7 und 9, abgesenkt und die Niederhalterolle 8 in das Band 1 gefahren. Durch die Position der Niederhalterolle 8 wird der Biegeradius des Bandes 1 eingestellt.In the solution according to FIG. 5, a part of the roller conveyor, namely the rollers 7 and 9, is lowered and the hold-down roller 8 is moved into the belt 1. By the position of the hold-down roller 8, the bending radius of the belt 1 is set.
Während in Fig. 5 die drei Rollen 7, 8, 9 in Walzrichtung W vor dem Treiber 3 angeordnet sind, können sie grundsätzlich auch hinter dem Treiber 3 positioniert werden, wie es Fig. 6 zeigt. Hier wird unmittelbar vor dem Wickeldorn 6 dem Band 1 das Biegemoment MB aufgegeben, das zu einer plastischen Verformung des Bandes 1 im Sinne der Krümmung erfolgt, wie sie im aufgewickelten Zustand auf dem Bund 2 vorliegt.While in Fig. 5, the three rollers 7, 8, 9 are arranged in the rolling direction W in front of the driver 3, they can in principle be positioned behind the driver 3, as shown in FIG. 6. Here, immediately before the mandrel 6, the band 1, the bending moment M B abandoned, which is done to a plastic deformation of the band 1 in the sense of curvature, as it is present in the wound state on the collar 2.
In Fig. 6 ist also eine separate Dreirollenbiegeeinheit zwischen dem Treiber 3 und dem Wickeldorn 6 angeordnet. Diese Einheit lässt sich zum Bandende an das Band schwenken, indem die beiden oberen Rollen 7 und 9 von oben und die untere Rolle 8 von unten an das Band 1 gedrückt werden. Durch die Positi- on der oberen und unteren Rollen wird hier der Biegeradius des Bereichs des Bandendes eingestellt. Bezugszeichenliste:In Fig. 6 so a separate three-roll bending unit between the driver 3 and the winding mandrel 6 is arranged. This unit can be pivoted to the end of the tape to the tape by the two upper rollers 7 and 9 are pressed from above and the lower roller 8 from below to the belt 1. Due to the position of the upper and lower rollers, the bending radius of the area of the belt end is set here. LIST OF REFERENCE NUMBERS
1 Band (Stahlband)1 band (steel band)
2 Bund2 frets
3 Treiber3 drivers
4 Treiberoberrolle4 driver upper roller
5 Treiberunterrolle5 driver sub-role
6 Wickeldorn6 mandrel
7 Walze7 roller
8 Walze8 roller
9 Walze9 roller
10 Steuerungsmittel10 control means
11 Aktuator11 actuator
12 Aktuator12 actuator
13 Sensor13 sensor
14 Bundwagen14 coil cars
15 Andrückrollen15 pressure rollers
16 Bandende16 end of the tape
17 Niederhalterolle17 hold-down roller
MB BiegemomentMB bending moment
W Walzrichtung W rolling direction

Claims

Patentansprüche: claims:
1. Verfahren zum Aufwickeln eines metallischen Bandes (1), insbesondere eines Stahlbandes, zu einem Bund (2), wobei das Band (1 ) zwischen ei- nem Treiber (3), bestehend aus mindestens einer Treiberoberrolle (4) und mindestens einer Treiberunterrolle (5), und einem Wickeldorn (6) geführt wird und wobei das Band (1 ) auf dem Wickeldorn (6) zu dem Bund (2) aufgewickelt wird,1. A method for winding a metallic strip (1), in particular a steel strip, into a collar (2), wherein the strip (1) between a driver (3), consisting of at least one driver top roller (4) and at least one driver lower roller (5), and a winding mandrel (6) is guided and wherein the tape (1) is wound on the winding mandrel (6) to the collar (2),
dadurch gekennzeichnet,characterized,
dass bei Erreichen einer definierten Restlänge des Bandes (1 ) in das Band (1) ein um eine quer zur Längsrichtung des Bandes (1) wirkendes und eine plastische Verformung hervorrufendes Biegemoment (MB) einge- leitet wird.that when a defined residual length of the band (1) is reached, a bending moment (MB) acting on the band (1) transversely to the longitudinal direction of the band (1) and inducing a plastic deformation is initiated.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Biegemoment (MB) im Bereich des Treibers (3) oder zwischen dem Treiber (3) und dem Wickeldorn (6) eingeleitet wird.2. The method according to claim 1, characterized in that the bending moment (MB) in the region of the driver (3) or between the driver (3) and the winding mandrel (6) is initiated.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Biegemoment (MB) das Band (1) in dem Sinne krümmt, wie es auf dem Wickeldom (6) angeordnet ist.3. The method according to claim 1 or 2, characterized in that the bending moment (MB), the band (1) curves in the sense as it is arranged on the winding mandrel (6).
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zur Erzeugung des Biegemoments (MB) die mindestens eine Treiberoberrolle (4) des Treibers (3) in Walzrichtung (W) verfahren und senkrecht zur Oberfläche des Bandes (1 ) abgesenkt wird.4. The method according to any one of claims 1 to 3, characterized in that, in order to generate the bending moment (MB), the at least one upper driver roller (4) of the driver (3) is moved in the rolling direction (W) and lowered perpendicular to the surface of the belt (1).
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass das Band (1 ) an einer in Walzrichtung (W) vor dem Treiber (3) liegenden Stelle in Richtung senkrecht zur Oberfläche des Bandes (1 ) niedergehalten wird.5. The method according to claim 4, characterized in that the tape (1) is held down in a direction in the rolling direction (W) in front of the driver (3) point in the direction perpendicular to the surface of the belt (1).
6. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zur Erzeugung des Biegemoments (MB) die mindestens eine Trei- berunterrolle (5) des Treibers (3) in Walzrichtung (W) verfahren und senkrecht zur Oberfläche des Bandes (1) angehoben wird.6. The method according to any one of claims 1 to 3, characterized in that for generating the bending moment (MB), the at least one driver lower roller (5) of the driver (3) in the rolling direction (W) and proceed perpendicular to the surface of the strip (1 ) is raised.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass das Band (1 ) an einer in Walzrichtung (W) vor dem Treiber (3) liegenden Stelle in Richtung senkrecht zur Oberfläche des Bandes (1 ) hochgehalten wird.7. The method according to claim 6, characterized in that the tape (1) at a in the rolling direction (W) in front of the driver (3) lying point in the direction perpendicular to the surface of the belt (1) is held up.
8. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zur Erzeugung des Biegemoments (M5) eine Anzahl Walzen (7, 8, 9) zwischen dem Treiber (3) und dem Wickeldorn (6) beidseitig an das Band (1) herangefahren werden. 8. The method according to any one of claims 1 to 3, characterized in that for generating the bending moment (M 5 ) a number of rollers (7, 8, 9) between the driver (3) and the winding mandrel (6) on both sides of the tape ( 1) are approached.
9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Längsspannung im Band (1) bei oder nach der Aufbringung des Biegemoments (MB) vermindert wird.9. The method according to any one of claims 1 to 8, characterized in that the longitudinal tension in the band (1) is reduced during or after the application of the bending moment (MB).
10. Vorrichtung zum Aufwickeln eines metallischen Bandes (1 ), insbesondere eines Stahlbandes, zu einem Bund (2), die einen Treiber (3) mit mindestens einer Treiberoberrolle (4) und mindestens einer Treiberunterrolle (5) aufweist sowie einen Wickeldorn (6), wobei das Band (1 ) zwischen dem10. Apparatus for winding a metallic strip (1), in particular a steel strip, into a collar (2) which has a driver (3) with at least one upper driver roll (4) and at least one driver lower roll (5) and a winding mandrel (6) , wherein the band (1) between the
Treiber (3) und dem Wickeldorn (6) geführt wird und wobei das Band (1 ) auf dem Wickeldorn (6) zu dem Bund (2) aufgewickelt wird, insbesondere zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 9,Driver (3) and the winding mandrel (6) is guided and wherein the tape (1) on the winding mandrel (6) to the collar (2) is wound, in particular for carrying out the method according to one of claims 1 to 9,
gekennzeichnet durchmarked by
Mittel (4, 5, 7, 8, 9, 11 , 12) zur Einleitung eines quer zur Längsrichtung des Bandes (1) wirkenden und eine plastische Verformung hervorrufenden Biegemoments (MB), die von Steuerungsmitteln (10) aktiviert werden, so- bald eine definierte Restlänge des Bandes (1) erreicht ist.Means (4, 5, 7, 8, 9, 11, 12) for initiating a bending moment (MB) acting transversely to the longitudinal direction of the strip (1) and causing a plastic deformation, which are activated by control means (10) a defined residual length of the band (1) is reached.
11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Mittel (4, 5, 7, 8, 9, 11 , 12) mindestens einen Aktuator (11, 12) umfassen, mit dem die Treiberoberrolle (4) und/oder die Treiberunterrolle (5) in Walzrichtung (W) verfahren und senkrecht zur Oberfläche des Bandes (1) abgesenkt oder angehoben werden kann.11. The device according to claim 10, characterized in that the means (4, 5, 7, 8, 9, 11, 12) comprise at least one actuator (11, 12), with which the upper driving roller (4) and / or the lower driving roller (5) in the rolling direction (W) and can be lowered or raised perpendicular to the surface of the belt (1).
12. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Mittel (4, 5, 7, 8, 9, 11 , 12) eine Anzahl Walzen (7, 8, 9) umfassen, die zwischen dem Treiber (3) und dem Wickeldorn (6) beidseitig an das Band (1) herangefahren werden können. 12. Device according to claim 10, characterized in that the means (4, 5, 7, 8, 9, 11, 12) comprise a number of rollers (7, 8, 9) arranged between the driver (3) and the mandrel (6) on both sides of the belt (1) can be approached.
EP07725970A 2006-06-28 2007-06-12 Method and device for rolling up a metallic strip Active EP2038076B1 (en)

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DE102006029858A DE102006029858A1 (en) 2006-06-28 2006-06-28 Method and device for winding a metallic strip
PCT/EP2007/005157 WO2008000348A1 (en) 2006-06-28 2007-06-12 Method and device for rolling up a metallic strip

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EP2038076B1 EP2038076B1 (en) 2010-03-31

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JP (1) JP2009541056A (en)
CN (1) CN101479055B (en)
AT (1) ATE462506T1 (en)
DE (2) DE102006029858A1 (en)
RU (1) RU2395358C1 (en)
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ATE462506T1 (en) 2010-04-15
DE502007003323D1 (en) 2010-05-12
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US20090184191A1 (en) 2009-07-23
RU2395358C1 (en) 2010-07-27
EP2038076B1 (en) 2010-03-31
US8096157B2 (en) 2012-01-17
CN101479055B (en) 2010-10-27
WO2008000348A1 (en) 2008-01-03
UA92240C2 (en) 2010-10-11
JP2009541056A (en) 2009-11-26

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