EP0867241A2 - Method for straightening continously thin metal strips, in particular strips made of aluminium and stainless steel with a thickness between 0,1 mm and 0,5 mm and straightening plant therefor - Google Patents

Method for straightening continously thin metal strips, in particular strips made of aluminium and stainless steel with a thickness between 0,1 mm and 0,5 mm and straightening plant therefor Download PDF

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Publication number
EP0867241A2
EP0867241A2 EP98112117A EP98112117A EP0867241A2 EP 0867241 A2 EP0867241 A2 EP 0867241A2 EP 98112117 A EP98112117 A EP 98112117A EP 98112117 A EP98112117 A EP 98112117A EP 0867241 A2 EP0867241 A2 EP 0867241A2
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Prior art keywords
straightening
roller set
measuring
strip
roller
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EP98112117A
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German (de)
French (fr)
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EP0867241A3 (en
EP0867241B1 (en
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Erfindernennung liegt noch nicht vor Die
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BWG Bergwerk und Walzwerk Maschinenbau GmbH
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BWG Bergwerk und Walzwerk Maschinenbau GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/05—Stretching combined with rolling

Definitions

  • the invention relates to a method for continuous Straightening thin metal strips, especially of Aluminum and stainless steel strips with strip thicknesses of 0.1 mm up to 0.5 mm, in a belt process line, after which belt unevenness and / or the band profile measured before straightening and then depending on the measured values determined at least one directional parameter is regulated in advance.
  • an actual value transmitter in front of a tensioner roller set on the inlet side for the amplitudes of bandwaves of the continuous Metal tape arranged. From the determined wave amplitude is connected in a to the actual value transmitter Calculator the minimum stretch size required for this amplitude calculated and as the setpoint of a control device for the one about the band tension between the two Tensioner roller sets supplied controllable degree of stretch. Consequently, in the known method, only the tape tension or degree of stretch as a guiding parameter.
  • the invention is based on the technical problem Processes of the type described at the beginning so on form that the metal strips properly and continuously be addressed, taking into account limited Values for the target parameters.
  • the Invention in a generic method before that as Guiding parameters of the strip tension taking into account stored reference values for different Metal tapes immediately before winding up the concerned metal strip continuously pre-regulated becomes.
  • the invention is based on the knowledge that Judgment result essentially from influencing factors, such as the Strip flatness and the strip profile, depending on the leveling is. If these influencing factors are determined, the Straightening process by varying the strip tension immediately before optimized the winding of the metal strip in question will. In this context it is also important that usually the degree of stretch can be minimized to the Material properties of the metal strip in question to influence as little as possible and still the same Get judge result. Unplannedness is always in the Infeed area of the metal strip in question by measurement detected, so that then the directional parameter or parameters in the way a forward control continuously and optimally can be adjusted.
  • influencing factors such as the Strip flatness and the strip profile, depending on the leveling is.
  • the optimal guideline values once in a test field with subsequent off-line flatness measurement and then save. If the same type of tape in the Belt process line driven again, it turns relevant straightening system automatically to the saved Guideline values and regulates the setting values during the Belt run after. For example, aluminum coils that usually on the outside diameter of the center bowls and on Have inner diameter rim waves over the entire Coil length can be optimally directed.
  • the second influencing variable, the band profile can be carried out online a traversing thickness gauge can be measured.
  • the Setting values of the corresponding straightening system can also be optimized, but the influence of the Belt profile during the straightening process not as large as that of band unevenness. But for that it is important that Belt tension on the rewinder depending on the belt profile adjust.
  • a band profile is included large increase in thickness in the area of the belt center after the Straightening in the wound coil due to compressive stresses and resulting crawls to center bowls. As a result, the flatness after straightening becomes negative influenced and is often even lost.
  • the deflection of the stretch bending rollers may be realized in this way be like this basically in the German patent 33 23 623 is described. This is done in particular with View of the figures 13 and 14 there a deflection with the help of hydraulic cylinders or by split Pinch rollers as pressure elements.
  • the measuring device for the distance measurement can be designed as a shapemeter roll or as a laser beam measuring device with measuring beams arranged perpendicular to the metal strip passing through and across its bandwidth in a predetermined distribution.
  • the entire measuring station is preferably in an area of low strip tension and consequently in front of the brake roller set in order to obtain significant measured values.
  • Low strip tension means a range of ⁇ 15 N / mm 2 for aluminum strips and ⁇ 50 N / mm 2 for stainless steel strips.
  • the measuring station can also have a strip thickness measuring device that traverses the bandwidth. In such a case, this strip thickness measuring device is also connected to the control device, which in turn regulates the unwinder in order to achieve optimum strip tension.
  • the straightening system shown is used to straighten thin ones Metal strips 1, in particular aluminum strips and Stainless steel strips with strip thicknesses from 0.1 mm to 0.5 mm.
  • This straightening system has a pull roller set 2 and one Brake roller set 3 on.
  • the brake roller set 3 is a measuring station 4 with at least one measuring device 5 for distance measurement perpendicular to the relevant metal strip 1 and above the bandwidth precedes.
  • Between the brake roller set 3 and the tension roller set 2 is a stretch roller set 6 with a brake roller 7 and a tension or correction roller 8 with concave and convex adjustable crown.
  • the stretch bending device 11 has stretch bending rollers 12.
  • To the Pull roller set 2 is followed by a rewinder 13.
  • To the Measuring device 5 is a control device 14 for at least the Stretching roller set 6, which is adjustable in terms of crowning Tension or correction roller 8, the tension measuring roller 10 and the stretch bending rollers 12 connected.
  • band unevenness can be continuously measure and the measurement results in real time to the Pass on control device 14 so that by way of a Advance regulation always an optimal setting of the Straightening parameters and consequently the straightening units is guaranteed so that a continuous Tape error correction is achieved online. Furthermore, an optimal adjustment of the tape tension before Rewinder 13 reach, namely when the measuring station 4 a Belt thickness measuring device traversing the bandwidth has and directly over the rewinder 13 of the tape tension is regulated ahead of the rewinder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)

Abstract

Strip planarity errors and/or strip profile are measured before straightening. Dependent on the measured values, at least one of the straightening parameters is regulated in advance. The strip tension as a straightening parameter is continuously regulated in advance, with stored target values for different strips taken into account. Between the braking roll set (3) and a pulling roll set (2), the installation includes a stretch roll set (6) with a braking roll (7) and pulling roll (8) as a corrector roll with adjustable concavity/convexity. The installation further includes a stretch-bending unit (11). Both the stretch roll set (6) and the stretch-bending unit (11) are controlled by a control unit (14).

Description

Die Erfindung betrifft ein Verfahren zum kontinuierlichen Richten von dünnen Metallbändern, insbesondere von Aluminium- und Edelstahlbändern mit Banddicken von 0,1 mm bis 0,5 mm, in einer Bandprozeßlinie, wonach Bandunplanheiten und/oder das Bandprofil vor dem Richten gemessen werden, und wonach in Abhängigkeit von den ermittelten Meßwerten zumindest ein Richtparameter vorausgeregelt wird.The invention relates to a method for continuous Straightening thin metal strips, especially of Aluminum and stainless steel strips with strip thicknesses of 0.1 mm up to 0.5 mm, in a belt process line, after which belt unevenness and / or the band profile measured before straightening and then depending on the measured values determined at least one directional parameter is regulated in advance.

Dünne Metallbänder, zum Beispiel Lithographiebänder aus Aluminium oder blankgeglühte Edelstahlbänder, müssen nach dem heutigen Standard immer höhere Anforderungen an die Bandplanheit bei höchster Qualität der Bandoberfläche erfüllen. Als Verfahren zum Richten solcher Metallbänder sind im wesentlichen das Zugrecken und das Streckbiegerichten bekannt, die stets weiterentwickelt worden sind, um den vorerwähnten Anforderungen gerecht zu werden. In diesem Zusammenhang sind insbesondere das Zugrecken mit einem zwischengeschalteten Zugreckrollenpaar (DE 39 12 676), der Einsatz einer konkav-konvexen Zugrolle (DE 42 30 243) und die sog. Coilsetregelung (DE 43 23 385) zu nennen.

  • Mit diesen Richtverfahren kann die Planlage in zunehmendem Maße bis hin zu < 1 I-Unit verbessert werden. Es entspricht 1 I-Unit der Meßgenauigkeit von 10 µm/m für Längenunterschiede im Metallband. Jedoch besteht beim Richten dünner Metallbänder ein besonderes Problem darin, daß die Planlage nicht kontinuierlich on-line nach dem Richten gemessen werden kann, da das betreffende Metallband in der Bandprozeßlinie aufgrund des Bandzuges optisch plan erscheint. Auch Meßeinrichtungen, welche die Bandzugverteilung über die Bandbreite messen und daraus Rückschlüsse auf die Planlage ermöglichen - sogenannte Shapemeter-Rollen - können in diesen Fällen nicht eingesetzt werden, da die Meßgenauigkeit von ca. ± 2 - 5 I-Units nicht ausreicht, um Restwelligkeiten in der Größenordnung von unter 1 I-Unit zu erfassen. Folglich muß von einem gerichteten Coil stets ein Probestück abgetrennt und off-line auf einem Planlagemeßtisch vermessen werden. Die Genauigkeit dieser Meßtische, bei denen die Probetafel zum Beispiel mit einem Laserstrahlmeßgerät vermessen wird, beträgt ca. 0,1 I-Unit.
  • Festigkeitsschwankungen in den Metallbändern lassen sich nicht erfassen und führen weiterhin zu Schwankungen im Richtergebnis. Dickenschwankungen liegen in der Regel bei < 2 % und haben nur untergeordneten Einfluß auf das Richtergebnis. Folglich bleiben zwei Haupteinflußgrößen übrig, nämlich die Unplanheit vor dem Richten und das Bandprofil.
Thin metal strips, for example lithography strips made of aluminum or bright annealed stainless steel strips, must meet the ever increasing demands on strip flatness with the highest quality of the strip surface according to today's standard. As a method for straightening such metal strips, tensile stretching and stretch bending straightening are known, which have always been developed to meet the aforementioned requirements. In this context, the stretching with an intermediate drawing stretching roller pair (DE 39 12 676), the use of a concave-convex drawing roller (DE 42 30 243) and the so-called coil set control (DE 43 23 385) are particularly worth mentioning.
  • With these straightening processes, the flatness can be improved to an extent of up to <1 I-Unit. 1 I-unit corresponds to the measuring accuracy of 10 µm / m for length differences in the metal strip. However, a particular problem with straightening thin metal strips is that the flatness cannot be measured continuously on-line after straightening, since the metal strip in question appears optically flat in the strip process line due to the strip tension. Even measuring devices that measure the strip tension distribution over the strip width and from this enable conclusions to be drawn about the flatness - so-called shapemeter rolls - cannot be used in these cases, since the measuring accuracy of approx on the order of less than 1 I-Unit. Consequently, a test piece must always be separated from a directed coil and measured off-line on a flat position measuring table. The accuracy of these measuring tables, on which the sample panel is measured, for example with a laser beam measuring device, is approximately 0.1 I-unit.
  • Fluctuations in strength in the metal strips cannot be recorded and continue to lead to fluctuations in the judging result. Thickness fluctuations are usually <2% and have only a minor influence on the judging result. As a result, two major influencing factors remain, namely the unevenness before straightening and the belt profile.

Um ein Streckbiegerichten mit jeweils an die zu richtenden Unplanheiten angepaßtem Streckgrad sicherzustellen, wird bei einem Verfahren der eingangs beschriebenen Ausführungsart vor einem einlaufseitigen Spannrollensatz ein Istwertgeber für die Amplituden von Bandwellen des durchlaufenden Metallbandes angeordnet. Aus der ermittelten Wellenamplitude wird in einem an den Istwertgeber angeschlossenen Rechner die für diese Amplitude erforderliche Mindeststreckgradgröße errechnet und als Sollwert einer Regelungseinrichtung für den über den Bandzug zwischen den beiden Spannrollensätzen steuerbaren Streckgrad zugeführt. Folglich wird bei dem bekannten Verfahren einzig der Bandzug bzw. Streckgrad als Richtparameter beeinflußt. Zusätzlich ist nach einem auslaufseitigem Spannrollensatz ein an einen Regler für einen Richtrollenstelltrieb angeschlossener Istwertgeber angeordnet. Sofern über den nach dem auslaufseitigem Spannrollensatz angeordneten Istwertgeber eine Querkrümmung des durchlaufenden Metallbandes festgestellt wird, erfolgt eine Verstellung des Stelltriebes über den Regler so lange, bis die Querkrümmung verschwunden ist. Folglich handelt es sich diesbezüglich um eine klassische (Nach-Regelung), jedenfalls keine Vorwärts- bzw. Vorrausregelung (vgl. EP-A- 0 012 738).In order to straighten a bending with each one to be addressed To ensure that the stretching degree is adapted to uneveness in a method of the type described above an actual value transmitter in front of a tensioner roller set on the inlet side for the amplitudes of bandwaves of the continuous Metal tape arranged. From the determined wave amplitude is connected in a to the actual value transmitter Calculator the minimum stretch size required for this amplitude calculated and as the setpoint of a control device for the one about the band tension between the two Tensioner roller sets supplied controllable degree of stretch. Consequently, in the known method, only the tape tension or degree of stretch as a guiding parameter. In addition is after a set of idlers on the outlet side connected to a controller for a straightening roller actuator Actual value generator arranged. If over the after the actual value transmitter arranged on the outlet tensioning roller set a transverse curvature of the continuous metal strip is determined, the Actuator via the controller until the transverse curvature has disappeared. Consequently, it is in this regard a classic (post-regulation), at least no forward or Advance regulation (cf. EP-A-0 012 738).

Schließlich wird im Stand der Technik ein Verfahren zum Richten von Metallbändern beschrieben, bei welchem Korrekturrollen in Abhängigkeit des Bandprofils verstellt werden (vgl. Patent Abstracts of Japan, Volumen 009, Nr. 046; JP-A-59185524).Finally, a method for Straightening of metal strips described in which Correction rollers adjusted depending on the belt profile (see Patent Abstracts of Japan, volume 009, No. 046; JP-A-59185524).

Der Erfindung liegt das technische Problem zugrunde, ein Verfahren der eingangs beschriebenen Art so weiter zu bilden, daß die Metallbänder einwandfrei und kontinuierlich gerichtet werden, und zwar unter Berücksichtigung eingegrenzter Werte für die Richtparameter.The invention is based on the technical problem Processes of the type described at the beginning so on form that the metal strips properly and continuously be addressed, taking into account limited Values for the target parameters.

Zur Lösung dieses technischen Problems schlägt die Erfindung bei einem gattungsgemäßen Verfahren vor, daß als Richtparameter der Bandzug unter Berücksichtigung abgespeicherter Richtwerte für unterschiedliche Metallbänder unmittelbar vor dem Aufwickeln des betreffenden Metallbandes kontinuierliche vorausgeregelt wird.To solve this technical problem, the Invention in a generic method before that as Guiding parameters of the strip tension taking into account stored reference values for different Metal tapes immediately before winding up the concerned metal strip continuously pre-regulated becomes.

Die Erfindung geht von der Erkenntnis aus, daß das Richtergebnis im wesentlichen von Einflußgrößen, wie der Bandunplanheit und dem Bandprofil, vor dem Richten abhängig ist. Wenn diese Einflußgrößen ermittelt werden, kann der Richtprozeß durch Variation des Bandzuges unmittelbar vor dem Aufwickeln des betreffenden Metallbandes optimiert werden. In diesem Zusammenhang ist auch von Bedeutung, daß in der Regel der Streckgrad minimiert werden kann, um die Werkstoffeingeschaften des betreffenden Metallbandes möglichst gering zu beeinflussen und dennoch das gleiche Richtergebnis zu erhalten. Stets wird die Unplanheit im Einlaufbereich des betreffenden Metallbandes meßtechnisch erfaßt, so daß dann der oder die Richtparameter im Wege einer Vorwärtsregelung kontinuierlich und optimal eingestellt werden können.The invention is based on the knowledge that Judgment result essentially from influencing factors, such as the Strip flatness and the strip profile, depending on the leveling is. If these influencing factors are determined, the Straightening process by varying the strip tension immediately before optimized the winding of the metal strip in question will. In this context it is also important that usually the degree of stretch can be minimized to the Material properties of the metal strip in question to influence as little as possible and still the same Get judge result. Unplannedness is always in the Infeed area of the metal strip in question by measurement detected, so that then the directional parameter or parameters in the way a forward control continuously and optimally can be adjusted.

Für die unterschiedlichen Metallbänder lassen sich die optimalen Richtwerte jeweils einmal in einem Versuchsfeld mit anschließender off-line Planlagemessung ermitteln und dann abspeichern. Wird der gleiche Bandtyp in der Bandprozeßlinie nochmals gefahren, stellt sich die betreffende Richtanlage automatisch auf die abgespeicherten Richtwerte ein und regelt die Einstellwerte während des Bandlaufs nach. So können zum Beispiel Aluminium-Coils, die in der Regel am Außendurchmesser Mittenschüsseln und am Innendurchmesser Randwellen aufweisen, über die gesamte Coillänge optimal gerichtet werden. For the different metal strips, the optimal guideline values once in a test field with subsequent off-line flatness measurement and then save. If the same type of tape in the Belt process line driven again, it turns relevant straightening system automatically to the saved Guideline values and regulates the setting values during the Belt run after. For example, aluminum coils that usually on the outside diameter of the center bowls and on Have inner diameter rim waves over the entire Coil length can be optimally directed.

Die zweite Einflußgröße, das Bandprofil, kann on-line über ein traversierendes Dickenmeßgerät gemessen werden. Die Einstellwerte der entsprechenden Richtanlage können so ebenfalls optimiert werden, jedoch ist der Einfluß des Bandprofils während des Richtvorganges nicht so groß, wie der der Bandunplanheit. Dafür ist es jedoch wichtig, den Bandzug am Aufwickler in Abhängigkeit vom Bandprofil einzustellen. So führt zum Beispiel ein Bandprofil mit großer Dickenüberhöhung im Bereich der Bandmitte nach dem Richten im aufgewickelten Coil infolge Druckspannungen und daraus resultierender Kriechvorgänge zu Mittenschüsseln. Folglich wird die Planlage nach dem Richten negativ beeinflußt und geht häufig sogar verloren.The second influencing variable, the band profile, can be carried out online a traversing thickness gauge can be measured. The Setting values of the corresponding straightening system can can also be optimized, but the influence of the Belt profile during the straightening process not as large as that of band unevenness. But for that it is important that Belt tension on the rewinder depending on the belt profile adjust. For example, a band profile is included large increase in thickness in the area of the belt center after the Straightening in the wound coil due to compressive stresses and resulting crawls to center bowls. As a result, the flatness after straightening becomes negative influenced and is often even lost.

Gegenstand der Erfindung ist auch eine Richtanlage, die zur Durchführung des erfindungsgemäßen Verfahrens besonders geeignet ist und zumindest einen Zugrollensatz und einen Bremsrollensatz aufweist. Dem Bremsrollensatz ist eine Meßstation mit zumindest einem Meßgerät für Abstandsmessungen senkrecht zu dem betreffenden Metallband und über die Bandbreite vorgeordnet. Zusätzlich ist das Meßgerät an eine Regelvorrichtung angeschlossen. Die vorgenannte Richteinlage ist dadurch gekennzeichnet, daß zwischen dem Bremsrollensatz und dem Zugrollensatz

  • ein Streckrollensatz mit einer Bremsrolle und einer Zugrolle als Korrekturrolle mit konkav und konvex einstellbarer Balligkeit und
  • einer Streckbiegevorrichtung
angeordnet sind, und daß die Regelvorrichtung zur Einstellung der Richtparameter mit Hilfe zumindest des Streckrollensatzes, der hinsichtlich ihrer Balligkeit einstellbaren Korrekturrolle und den Streckbiegerollen der Streckbiegevorrichtung eingerichtet ist.The invention also relates to a straightening system which is particularly suitable for carrying out the method according to the invention and has at least one pulling roller set and one braking roller set. The brake roller set is preceded by a measuring station with at least one measuring device for distance measurements perpendicular to the metal strip in question and over the bandwidth. In addition, the measuring device is connected to a control device. The aforementioned straightening insert is characterized in that between the brake roller set and the pull roller set
  • a drawing roller set with a brake roller and a pull roller as a correction roller with concave and convex adjustable crowning and
  • a stretch bending device
are arranged, and that the control device for setting the straightening parameters with the help of at least the stretching roller set, the correction roller, which is adjustable with regard to its crowning, and the stretching bending rollers of the stretching bending device.

Die Durchbiegung der Streckbiegerollen mag so verwirklicht sein, wie dies grundsätzlich in der deutschen Patenschrift 33 23 623 beschrieben ist. Hier erfolgt insbesondere mit Blick auf die dortigen Figuren 13 und 14 eine Durchbiegung mit Hilfe von Hydraulikzylindern oder durch aufgeteilte Andruckrollen als Andruckelemente.The deflection of the stretch bending rollers may be realized in this way be like this basically in the German patent 33 23 623 is described. This is done in particular with View of the figures 13 and 14 there a deflection with the help of hydraulic cylinders or by split Pinch rollers as pressure elements.

Bei der zuvor beschriebenen Richtanlage kann das Meßgerät für die Abstandsmessung als eine Shapemeter-Rolle oder als ein Laserstrahlmeßgerät mit senkrecht zu dem durchlaufenden Metallband und über seine Bandbreite in vorgegebener Verteilung angeordneten Meßstrahlen ausgebildet sein. Die ganze Meßstation befindet sich bevorzugt in einem Bereich niedriger Bandzüge und folglich vor dem Bremsrollensatz, um signifikante Meßwerte zu erhalten. Niedrige Bandzüge meint einen Bereich von < 15 N/mm2 für Aluminiumbänder und < 50 N/mm2 für Edelstahlbänder. Die Meßstation kann außerdem ein über die Bandbreite traversierendes Banddickenmeßgerät aufweisen. In einem solchen Fall ist auch dieses Banddickenmeßgerät an die Regelvorrichtung angeschlossen, die wiederum den Abwickler zum Erzielen optimaler Bandzüge vorausregelt. In the straightening system described above, the measuring device for the distance measurement can be designed as a shapemeter roll or as a laser beam measuring device with measuring beams arranged perpendicular to the metal strip passing through and across its bandwidth in a predetermined distribution. The entire measuring station is preferably in an area of low strip tension and consequently in front of the brake roller set in order to obtain significant measured values. Low strip tension means a range of <15 N / mm 2 for aluminum strips and <50 N / mm 2 for stainless steel strips. The measuring station can also have a strip thickness measuring device that traverses the bandwidth. In such a case, this strip thickness measuring device is also connected to the control device, which in turn regulates the unwinder in order to achieve optimum strip tension.

Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Die einzige Figur zeigt eine erfindungsgemäße Richtanlage in schematischer Seitenansicht.In the following, the invention is based on only one Exemplary embodiment drawing closer explained. The only figure shows an inventive Straightening system in schematic side view.

Die dargestellte Richtanlage dient zum Richten von dünnen Metallbändern 1, insbesondere von Aluminium-Bändern und Edelstahlbändern mit Banddicken von 0,1 mm bis 0,5 mm. Diese Richtanlage weist einen Zugrollensatz 2 und einen Bremsrollensatz 3 auf. Dem Bremsrollensatz 3 ist eine Meßstation 4 mit zumindest einem Meßgerät 5 für Abstandsmessung senkrecht zu dem betreffenden Metallband 1 und über die Bandbreite vorgeordnet. Zwischen dem Bremsrollensatz 3 und dem Zugrollensatz 2 ist ein Streckrollensatz 6 mit einer Bremsrolle 7 und einer Zug- bzw. Korrekturrolle 8 mit konkav und konvex einstellbarer Balligkeit angeordnet. Zwischen der Bremsrolle und der Zugrolle 8 befindet sich ein Zugreckbereich 9. Hinter dem Streckrollensatz kann sich noch eine geregelte Zugmeßrolle 10 befinden, welcher eine Streckbiegevorrichtung 11 folgt. Die Streckbiegevorrichtung 11 weist Streckbiegerollen 12 auf. An den Zugrollensatz 2 schließt sich ein Aufwickler 13 an. An das Meßgerät 5 ist eine Regelvorrichtung 14 für zumindest den Streckrollensatz 6, die hinsichtlich ihrer Balligkeit einstellbare Zug- bzw. Korrekturrolle 8, die Zugmeßrolle 10 und die Streckbiegerrollen 12 angeschlossen.The straightening system shown is used to straighten thin ones Metal strips 1, in particular aluminum strips and Stainless steel strips with strip thicknesses from 0.1 mm to 0.5 mm. This straightening system has a pull roller set 2 and one Brake roller set 3 on. The brake roller set 3 is a measuring station 4 with at least one measuring device 5 for distance measurement perpendicular to the relevant metal strip 1 and above the bandwidth precedes. Between the brake roller set 3 and the tension roller set 2 is a stretch roller set 6 with a brake roller 7 and a tension or correction roller 8 with concave and convex adjustable crown. There is between the brake roller and the pull roller 8 a stretching area 9. Behind the stretching roller set are still a regulated tension measuring roller 10, which one Stretch bending device 11 follows. The stretch bending device 11 has stretch bending rollers 12. To the Pull roller set 2 is followed by a rewinder 13. To the Measuring device 5 is a control device 14 for at least the Stretching roller set 6, which is adjustable in terms of crowning Tension or correction roller 8, the tension measuring roller 10 and the stretch bending rollers 12 connected.

Auf diese Weise lassen sich Bandunplanheiten kontinuierlich messen und die Meßergebnisse in Echtzeit an die Regelvorrichtung 14 weitergeben, so daß im Wege einer Voraus-Regelung stets eine optimale Einstellung der Richtparameter und folglich der Richtaggregate gewährleistet ist, so daß eine kontinuierliche Bandfehlerkorrektur on-line erreicht wird. Ferner läßt sich eine optimale Einstellung des Bandzuges vor dem Aufwickler 13 erreichen, wenn nämlich die Meßstation 4 ein über die Bandbreite traversierendes Banddickenmeßgerät aufweist und über den Aufwickler 13 der Bandzug unmittelbar vor dem Aufwickler vorausgeregelt wird.In this way, band unevenness can be continuously measure and the measurement results in real time to the Pass on control device 14 so that by way of a Advance regulation always an optimal setting of the Straightening parameters and consequently the straightening units is guaranteed so that a continuous Tape error correction is achieved online. Furthermore, an optimal adjustment of the tape tension before Rewinder 13 reach, namely when the measuring station 4 a Belt thickness measuring device traversing the bandwidth has and directly over the rewinder 13 of the tape tension is regulated ahead of the rewinder.

Claims (5)

Verfahren zum kontinuierlichen Richten von dünnen Metallbändern, insbesondere von Aluminium- und Edelstahl-Bändern mit Banddicken von 0,1 mm bis 0,5 mm, in einer Bandprozeßlinie, wonach Bandunplanheiten und/oder das Bandprofil vor dem Richten gemessen werden, und wonach in Abhängigkeit von den ermittelten Meßwerten zumindest ein Richtparameter vorausgeregelt wird, dadurch gekennzeichnet, daß als Richtparameter der Bandzug unter Berücksichtigung abgespeicherter Richtwerte für unterschiedliche Metallbänder unmittelbar vor dem Aufwickeln des betreffenden Metallbandes kontinuierlich vorausgeregelt wird.Process for the continuous straightening of thin Metal strips, in particular aluminum and stainless steel strips with strip thicknesses from 0.1 mm to 0.5 mm, in one Belt process line, according to which belt unevenness and / or the belt profile be measured before straightening, and after which in Dependence on the measured values determined at least one Is regulated in advance, characterized in that that the tape tension is taken into account as a guiding parameter stored reference values for different Metal tapes immediately before winding up the concerned metal strip continuously pre-regulated becomes. Richtanlage zum Durchführen des Verfahrens nach Anspruch 1, mit zumindest einem Zugrollensatz (2) und einem Bremsrollensatz (3), wobei dem Bremsrollensatz (3) eine Meßstation (4) mit zumindest einem Meßgerät (5) für Abstandsmessung senkrecht zu dem betreffenden Metallband (1) und über die Bandbreite vorgeordnet ist, und wobei das Meßgerät (5) an eine Regelvorrichtung (14) angeschlossen ist, dadurch gekennzeichnet, das zwischen dem Bremsrollensatz (3) und dem Zugrollensatz (2) ein Streckrollensatz (6) mit einer Bremsrolle (7) und einer Zugrolle (8) als Korrekturrolle mit konkav und konvex einstellbarer Balligkeit und einer Streckbiegevorrichtung (11) angeordnet sind, und daß die Regelvorrichtung (14) zur Einstellung der Richtparameter mit Hilfe zumindest des Streckrollensatzes (6), der hinsichtlich ihrer Balligkeit einstellbaren Korrekturrolle (8) und der Streckbiegerollen (12) der Streckbiegevorrichtung (11) eingerichtet ist.Straightening system for carrying out the method according to claim 1, with at least one pull roller set (2) and one brake roller set (3), the brake roller set (3) being a measuring station (4) with at least one measuring device (5) for measuring the distance perpendicular to the metal strip in question (1 ) and upstream of the bandwidth, and wherein the measuring device (5) is connected to a control device (14), characterized in that between the brake roller set (3) and the pull roller set (2) a drawing roller set (6) with a brake roller (7) and a pull roller (8) as a correction roller with concave and convex adjustable crowning and a stretch bending device (11) are arranged, and that the control device (14) for setting the straightening parameters is set up with the aid of at least the stretching roller set (6), the correction roller (8), which can be set with respect to crowning, and the stretching bending rollers (12) of the stretching bending device (11). Richtanlage nach Anspruch 2 dadurch gekennzeichnet, daß das Meßgerät (5) für die Abstandsmessung als eine Shapemeter-Rolle oder als ein Laserstrahlmeßgerät mit senkrecht zu dem durchlaufenden Metallband (1) und über seine Bandbreite in vorgegebener Verteilung angeordneten Meßstrahlen ausgebildet ist.Straightening system according to claim 2, characterized in that the measuring device (5) for distance measurement as one Shapemeter roll or using as a laser beam meter perpendicular to the continuous metal strip (1) and over its bandwidth arranged in a predetermined distribution Measuring beams is formed. Richtanlage nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Meßstation (4) in einem Bereich niedriger Bandzüge angeordnet ist.Straightening system according to claim 2 or 3, characterized in that the measuring station (4) in an area lower Belt pulls is arranged. Richtanlage nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Meßstation (4) ein über die Bandbreite traversierendes Banddickenmeßgerät aufweist, welches an die Regelvorrichtung (14) zum Regeln des Aufwicklers (13) bzw. des Bandzuges unmittelbar vor dem Aufwickler angeschlossen ist.Straightening system according to one of claims 2 to 4, characterized characterized in that the measuring station (4) over the Bandwidth traversing tape thickness measuring device, which to the control device (14) for controlling the Rewinder (13) or the tape tension immediately before Rewinder is connected.
EP98112117A 1995-03-14 1995-11-25 Method for straightening continuously thin metal strips, in particular strips made of aluminium and stainless steel with a thickness between 0,1 mm and 0,5 mm and straightening plant therefor Expired - Lifetime EP0867241B1 (en)

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DE19509067A DE19509067A1 (en) 1995-03-14 1995-03-14 Process for the continuous straightening of thin metal strips, in particular aluminum and stainless steel strips with strip thicknesses of 0.1 mm to 0.5 mm, and straightening system for carrying out the method
DE19509067 1995-03-14
EP95118599A EP0732160B1 (en) 1995-03-14 1995-11-25 Method for straightening continuously thin metal strips, in particular strips made of aluminium and stainless steel with a thickness between 0,1 mm and 0,5 mm and straightening plant therefor

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EP0867241A3 (en) 1998-10-21
EP0732160A2 (en) 1996-09-18
DE59509514D1 (en) 2001-09-20
DE19509067A1 (en) 1996-09-19
US5704237A (en) 1998-01-06
EP0732160B1 (en) 2001-08-16
EP0867241B1 (en) 2003-04-02
US5829286A (en) 1998-11-03
DE59510627D1 (en) 2003-05-08
EP0732160A3 (en) 1997-08-20
US5829287A (en) 1998-11-03

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