WO2007048477A1 - Method for the detection of strip edges - Google Patents

Method for the detection of strip edges Download PDF

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Publication number
WO2007048477A1
WO2007048477A1 PCT/EP2006/009411 EP2006009411W WO2007048477A1 WO 2007048477 A1 WO2007048477 A1 WO 2007048477A1 EP 2006009411 W EP2006009411 W EP 2006009411W WO 2007048477 A1 WO2007048477 A1 WO 2007048477A1
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WO
WIPO (PCT)
Prior art keywords
band
edge
strip
computer
determined
Prior art date
Application number
PCT/EP2006/009411
Other languages
German (de)
French (fr)
Inventor
Hartmut Pawelski
Hans-Peter Richter
Andreas Runge
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
Priority to EP06792297A priority Critical patent/EP1945384A1/en
Priority to US12/083,186 priority patent/US20090113968A1/en
Priority to JP2008536957A priority patent/JP2009512559A/en
Priority to BRPI0617752-2A priority patent/BRPI0617752A2/en
Priority to CA002625494A priority patent/CA2625494A1/en
Publication of WO2007048477A1 publication Critical patent/WO2007048477A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/028—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring lateral position of a boundary of the object
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/04—Lateral deviation, meandering, camber of product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product

Definitions

  • the invention relates to a method for tape edge detection in a cold rolling mill and / or belt system, in which by means of two optical detection systems contactless, the band edges are continuously recorded.
  • a method for controlling the strip running during rolling, in particular finish rolling of self-luminous hot strip in one of several rolling mills arranged successively rolling train in dependence on the position of the two band edges comprises the combination of the following features:
  • a contactless, optical measuring device is arranged in the direction of passage of the strip behind at least one rolling mill Band edge outgoing line simultaneously recorded both band edges.
  • the distances between the strip edges are determined by a reference point corresponding to the middle of the rolling train.
  • an actuating signal for an adjusting device for adjusting the nip of the roll stand is formed.
  • the strip run is corrected by adjusting the nip of the rolling mill immediately upstream of the measuring device in the direction of the strip.
  • a measuring device a line scan camera is used.
  • JP 6 147 856 a device is known, in which the strip edges of a rolling stock are recorded without contact by means of two cameras and conclusions are drawn by evaluation in a processor on the strip center profile.
  • the detection of the band edges by two cameras is also known from JP 63 225 107.
  • the unevenness of the surface of a rolling stock is determined in JP 80 54217 A2 by the use of multiple cameras.
  • the invention has the object to improve the detection of the tape position and to automatically correct the tape position.
  • This object is achieved in a method for tape edge detection in a cold rolling mill and / or belt system in which by means of two optical detection systems contactless tape edges are continuously resolved in that the right edge band and the left band edge over a band length of more than 800 mm by means of a Captured imaging device, the image data edited in a computer and the thus determined band edge profile is taken into account in the scheme. Further embodiments of the method will become apparent from the dependent claims.
  • the image pickup device in a first embodiment is a digital camera, i. a known and proven device is used.
  • an optical detection system In order to detect the strip during threading into the closed roll gap in cold rolling mills, an optical detection system is used.
  • the recognition system offers on the one hand the advantage of non-contact measurement and on the other hand an easy extensibility without major hardware changes.
  • Continuous image acquisition by means of two optical detection systems, each of which detects a band edge, permits continuous recording of the band profile in the monitored area (quality assurance).
  • the band edges are determined in their angular position as well as their position.
  • the information about the band position is used in a regulation for actively changing the inclination. About the change of the tilt, in turn, the band position is set.
  • the entire calculation of the band position as well as the generation of the controlled variables take place on a computer outside the actual rolling plant and / or the belt system. Due to the small dimensions of the optical detection systems used eliminates a costly conversion of the rolling mill and / or the belt system.
  • the optical detection system can also be installed in critical environmental conditions such as lubricant mist within a rolling mill / belt plant. The installation takes place in a protected position; the distance to the band can be chosen freely. Only indirect lighting is required.
  • band edge tears can be metrologically recorded and evaluated.
  • the advantage is that consequential damage can be reduced by tape breaks.
  • coarse band surface defects such as e.g. Markings on the work roll, which are reflected on the strip surface, are detected and detected accordingly.
  • optical recognition systems are suitable for all bandwidths of the rolling mill / conveyor system due to their fixed installation.
  • FIG. 1 is a plan view of an inventive detection system
  • Fig. 3 in plan view the detection system at a special
  • the detection system 1 is shown in principle.
  • the rolled strip 3 emerging or entering from the roll gap 2 is detected by two cameras 4, 5 arranged above or below it.
  • the viewing area 6, 7 of the cameras 4, 5 includes, for example, an area that does not take into account the center of the strip 8.
  • the band center can also be taken into account via installation of additional cameras.
  • the digital video signals 9, 10 obtained by the cameras 4, 5 are read into a computer 11.
  • Evaluation software determines a plurality of edge points 12 of the strip edges 13, 14. The position of the edge points 12 and their course (see FIG. 2) are evaluated in the computer 11. If differences are found in relation to a given edge profile, a change in the roll gap setting is effected, for example, by a signal for pivoting the roll.
  • the control can address the upstream and / or downstream roll stand.
  • FIG. 2 shows in simplified form the differences between a band edge detection with only one edge point 12 (left column) according to the prior art and the band edge detection according to the invention with a plurality of edge points 12 (right column). While the distance and the position of these two edge points 12 can be determined / determined with only one edge point 12, no statement can be made about the course of the rolled strip 3. Different with a band edge detection with several edge points 12. By the twelve edge points 12 on the right band edge 14 and on the left band edge 13 shown in the example, it can be determined whether the rolled strip 3 runs in the middle (a), pivoted to the left (b), forms an arc (c) or wavy (d).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

Disclosed is a method for detecting strip edges in a cold rolling mill and/or strip-forming system. According to said method, the strip edges (13, 14) are continuously recorded in a contactless manner by means of two optical recognition systems, the right strip edge (14) and the left strip edge (13) are detected along a strip length exceeding 800 mm with the aid of an image recording device (4, 5), the image data is transmitted to a computer (11) and is processed there, and the shape of the strip edge determined in said fashion is taken into account during the regulation process.

Description

Verfahren zur BandkantenerfassungMethod for band edge detection
Die Erfindung betrifft ein Verfahren zur Bandkantenerfassung in einer Kaltwalzanlage und / oder Bandanlage, bei dem mittels zweier optischer Erkennungssysteme berührungslos die Bandkanten kontinuierlich aufgenommen werden.The invention relates to a method for tape edge detection in a cold rolling mill and / or belt system, in which by means of two optical detection systems contactless, the band edges are continuously recorded.
Aus der DE 38 37 101 A1 ist ein Verfahren zum Steuern des Bandlaufs beim Walzen, insbesondere Fertigwalzen von selbstleuchtendem Warmband in einer von mehreren hintereinander angeordneten Walzgerüsten gebildeten Walzstraße in Abhängigkeit von der Lage der beiden Bandkanten bekannt. Das Verfahren umfasst die Kombination folgender Merkmale: Zur Erfassung der Lage des Bandes wird in Durchlaufrichtung des Bandes hin- ter mindestens einem Walzgerüst eine mittig über dem Band angeordnete, berührungslos arbeitende, optische Messeinrichtung verwendet, welche mit einer quer zur Bandlaufrichtung verlaufende, bis über die Bandkanten hinausreichenden Messlinie gleichzeitig beide Bandkanten erfasst. Mittels der Messeinrichtung werden die Abstände der Bandkanten von einem der Mitte der Walzstraße entsprechenden Bezugspunkt bestimmt.From DE 38 37 101 A1 a method for controlling the strip running during rolling, in particular finish rolling of self-luminous hot strip in one of several rolling mills arranged successively rolling train in dependence on the position of the two band edges is known. The method comprises the combination of the following features: In order to detect the position of the strip, a contactless, optical measuring device is arranged in the direction of passage of the strip behind at least one rolling mill Band edge outgoing line simultaneously recorded both band edges. By means of the measuring device, the distances between the strip edges are determined by a reference point corresponding to the middle of the rolling train.
Durch Vergleich der gemessenen Abstände der Bandkanten vom Bezugspunkt wird ein Stellsignal für eine Stelleinrichtung zur Einstellung des Walzenspaltes des Walzgerüstes gebildet. Der Bandlauf wird durch Verstellen des Walzenspaltes, des der Messeinrich- tung in Band lauf richtung unmittelbar vorgeordneten Walzgerüstes korrigiert. Als Messeinrichtung wird eine Zeilenkamera verwendet.By comparing the measured distances of the strip edges from the reference point, an actuating signal for an adjusting device for adjusting the nip of the roll stand is formed. The strip run is corrected by adjusting the nip of the rolling mill immediately upstream of the measuring device in the direction of the strip. As a measuring device, a line scan camera is used.
Aus der JP 6 147 856 ist eine Vorrichtung bekannt, bei der die Bandkanten eines Walzgutes mittels zweier Kameras berührungslos aufgenommen werden und durch Auswertung in einem Prozessor Rückschlüsse auf den Bandmittenverlauf gezogen werden. Die Erfassung der Bandkanten durch zwei Kameras ist auch aus der JP 63 225 107 bekannt.From JP 6 147 856 a device is known, in which the strip edges of a rolling stock are recorded without contact by means of two cameras and conclusions are drawn by evaluation in a processor on the strip center profile. The detection of the band edges by two cameras is also known from JP 63 225 107.
Die Unebenheit der Oberfläche eines Walzgutes wird in der JP 80 54217 A2 durch den Einsatz von mehreren Kameras ermittelt.The unevenness of the surface of a rolling stock is determined in JP 80 54217 A2 by the use of multiple cameras.
Bei den bekannten Erfassungssystemen wird durch die optische Messeinrichtung nur jeweils ein Punkt an der rechten und ein Punkt an der linken Bandkante erfasst. Durch eine derartige Anordnung kann beispielsweise die Bandform des Walzbandes nicht erfasst werden.In the known detection systems, only one point on the right and one point on the left edge of the band are detected by the optical measuring device. By such an arrangement, for example, the strip shape of the rolled strip can not be detected.
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, die Erfassung der Bandlage zu verbessern und die Bandlage automa- tisch zu korrigieren.Based on this prior art, the invention has the object to improve the detection of the tape position and to automatically correct the tape position.
Diese Aufgabe wird erfindungsgemäß bei einem Verfahren zur Bandkantenerfassung in einer Kaltwalzanlage und / oder Bandanlage, bei dem mittels zweier optischer Erkennungssysteme berührungslos die Bandkanten kontinuierlich aufgenommen werden dadurch gelöst, dass die rechte Bandkante und die linke Bandkante über eine Bandlänge von mehr als 800 mm mittels einer Bildaufnahmevorrichtung erfasst, die Bilddaten in einem Rechner bearbeitet und der so ermittelte Bandkantenverlauf bei der Regelung berücksichtigt wird. Weitere Ausgestaltungen des Verfahrens ergeben sich aus den diesbezügli- chen Unteransprüchen.This object is achieved in a method for tape edge detection in a cold rolling mill and / or belt system in which by means of two optical detection systems contactless tape edges are continuously resolved in that the right edge band and the left band edge over a band length of more than 800 mm by means of a Captured imaging device, the image data edited in a computer and the thus determined band edge profile is taken into account in the scheme. Further embodiments of the method will become apparent from the dependent claims.
Die Bildaufnahmevorrichtung ist in einer ersten Ausführung eine digitale Kamera, d.h. es wird eine bekannte und erprobte Vorrichtung eingesetzt.The image pickup device in a first embodiment is a digital camera, i. a known and proven device is used.
Die Erhöhung der Kantenpunkte von einem Punkt pro Bandkante auf beispielsweise zwölf Punkte pro Bandkante lässt ein genaues Abbild des Bandverlaufs zu und ist damit für Bandlagenkorrekturwerte über die Walzen - Schräglage deutlich besser regelbar.Increasing the edge points from one point per band edge to, for example, twelve points per band edge leaves an accurate image of the band progression and is therefore much better controllable for tape position correction values via the roll tilt angle.
Aus den optisch aufgenommenen, für den Verlauf der Bandkanten repräsentativen Messwerten werden Datenpunkte ermittelt, die die Bandkanten in ihrer Winkellage sowie in ihrer Position charakterisieren. Aus diesen Datenpunkten werden Informationen zur Bandmitte sowie zum Bandverlauf abgeleitet, die für aktive Regelungseingriffe, beispielsweise eine Schräglagenverstellung der Walzen, herangezogen werden.From the optically recorded measured values representative of the course of the band edges, data points are determined which characterize the band edges in their angular position as well as in their position. From these data points information about the band center and the band profile are derived, which are used for active control interventions, such as a tilt adjustment of the rollers.
Um den Bandverlauf beim Einfädeln in den geschlossenen Walzspalt bei Kaltwalzanlagen zu erfassen, wird ein optisches Erkennungssystem eingesetzt. Das Erkennungssystem bietet zum einen den Vorteil der berührungslosen Messung und zum anderen eine einfache Erweiterbarkeit ohne große Hardwareänderungen. Durch die kontinuierliche Bildaufnahme durch zwei optische Erken- nungssysteme, die jeweils eine Bandkante erfassen, ist eine lückenlose Aufzeichnung des Bandverlaufs im überwachten Bereich möglich (Qualitätssicherung).In order to detect the strip during threading into the closed roll gap in cold rolling mills, an optical detection system is used. The recognition system offers on the one hand the advantage of non-contact measurement and on the other hand an easy extensibility without major hardware changes. Continuous image acquisition by means of two optical detection systems, each of which detects a band edge, permits continuous recording of the band profile in the monitored area (quality assurance).
Nach Reduktion der Bilddaten auf die erforderlichen Datenpunkte werden die Bandkanten in ihrer Winkellage sowie ihrer Position bestimmt.After reduction of the image data to the required data points, the band edges are determined in their angular position as well as their position.
Die Informationen über die Bandlage werden in einer Regelung zur aktiven Veränderung der Schräglage benutzt. Über die Änderung der Schräglage wird wiederum die Bandlage eingestellt.The information about the band position is used in a regulation for actively changing the inclination. About the change of the tilt, in turn, the band position is set.
Die gesamte Berechnung der Bandlage sowie die Erzeugung de Regelgrößen findet auf einem Rechner außerhalb der eigentlichen Walzanlage und / oder der Bandanlage statt. Durch die geringen Abmessungen der eingesetzten optischen Erkennungssysteme entfällt ein aufwändiger Umbau der Walzanlage und / oder der Bandanlage. Das optische Erkennungssystem kann auch bei kritischen Umgebungsbedingungen wie Schmiermitteldunst innerhalb einer Walzanlage / einer Bandanlage installiert werden. Die Installation erfolgt an einer geschützten Position; der Abstand zum Band kann frei gewählt werden. Es ist nur indirekte Beleuchtung erforderlich.The entire calculation of the band position as well as the generation of the controlled variables take place on a computer outside the actual rolling plant and / or the belt system. Due to the small dimensions of the optical detection systems used eliminates a costly conversion of the rolling mill and / or the belt system. The optical detection system can also be installed in critical environmental conditions such as lubricant mist within a rolling mill / belt plant. The installation takes place in a protected position; the distance to the band can be chosen freely. Only indirect lighting is required.
Weiterhin besteht mit dem optischen Erkennungssystem die Möglichkeit, Aussagen über den Zustand der Bandkante zu machen. Beispielsweise können Bandkanteneinrisse messtechnisch erfasst und ausgewertet werden. Der Vorteil liegt darin, entstehende Folgeschäden durch Bandrisse zu reduzieren.Furthermore, with the optical recognition system it is possible to make statements about the condition of the band edge. For example, band edge tears can be metrologically recorded and evaluated. The advantage is that consequential damage can be reduced by tape breaks.
Außerdem können mittels des optischen Erkennungssystems grobe Bandoberflächenfehler, wie z.B. Markierungen auf der Arbeitswalze, die sich auf der Bandoberfläche abbilden, erkannt werden und entsprechend detektiert werden.In addition, by means of the optical detection system, coarse band surface defects, such as e.g. Markings on the work roll, which are reflected on the strip surface, are detected and detected accordingly.
Die optischen Erkennungssysteme sind durch ihre feste Installation für alle Bandbreiten der Walzanlage / der Bandanlage geeignet.The optical recognition systems are suitable for all bandwidths of the rolling mill / conveyor system due to their fixed installation.
Mit der oben beschriebenen Vorrichtung können auch bestehende Anlagen nachgerüstet werden.With the device described above, existing systems can be retrofitted.
Ausführungsbeispiele der Erfindung werden anhand von sehr schematischen Zeichnungen näher beschrieben. Es zeigen:Embodiments of the invention will be described in more detail with reference to very schematic drawings. Show it:
Fig. 1 in Draufsicht ein erfindungsgemäßes Erkennungssystem,1 is a plan view of an inventive detection system,
Fig. 2 in Draufsicht die Unterschiede zwischen einem bekanntenFig. 2 in plan view, the differences between a known
Erkennungssystem und dem erfindungsgemäßen Erkennungssystem undDetection system and the detection system according to the invention and
Fig. 3 in Draufsicht das Erkennungssystem bei einer speziellenFig. 3 in plan view the detection system at a special
Bandkantensituation. In Fig. 1 ist im Prinzip das Erkennungssystem 1 dargestellt. Das aus dem Walzspalt 2 austretende oder eintretende Walzband 3 wird von zwei darüber oder darunter angeordneten Kameras 4, 5 erfasst. Der Sichtbereich 6, 7 der Kame- ras 4, 5 umfasst beispielsweise einen Bereich, der die Bandmitte 8 nicht berücksichtigt. Die Bandmitte kann über Installation von zusätzlichen Kameras aber auch berücksichtigt werden.Band-edge situation. In Fig. 1, the detection system 1 is shown in principle. The rolled strip 3 emerging or entering from the roll gap 2 is detected by two cameras 4, 5 arranged above or below it. The viewing area 6, 7 of the cameras 4, 5 includes, for example, an area that does not take into account the center of the strip 8. The band center can also be taken into account via installation of additional cameras.
Die von den Kameras 4, 5 erhaltenen digitalen Videosignale 9, 10 werden in einen Rechner 11 eingelesen. Eine Auswertesoftware ermittelt mehrere Kan- tenpunkte 12 der Bandkanten 13, 14. Die Lage der Kantenpunkte 12 und deren Verlauf ( siehe Figur 2 ) werden im Rechner 11 ausgewertet. Werden dabei Unterschiede zu einem vorgegebenen Kantenverlauf festgestellt, so erfolgt beispielsweise eine Änderung der Walzspalteinstellung durch ein Signal zum Schwenken der Walze. Die Regelung kann das vor- und / oder nachstehende Walzgerüst ansprechen.The digital video signals 9, 10 obtained by the cameras 4, 5 are read into a computer 11. Evaluation software determines a plurality of edge points 12 of the strip edges 13, 14. The position of the edge points 12 and their course (see FIG. 2) are evaluated in the computer 11. If differences are found in relation to a given edge profile, a change in the roll gap setting is effected, for example, by a signal for pivoting the roll. The control can address the upstream and / or downstream roll stand.
In Figur 2 sind vereinfacht die Unterschiede zwischen einer Bandkantenerfassung mit nur einem Kantenpunkt 12 (linke Spalte) nach dem Stand der Technik und der erfindungsgemäßen Bandkantenerfassung mit mehreren Kantenpunk- ten 12 ( rechte Spalte ) dargestellt. Während bei nur einem Kantenpunkt 12 zwar der Abstand und die Lage dieser beiden Kantenpunkte 12 bestimmt / ermittelt werden kann, so kann keine Aussage über den Verlauf des Walzbandes 3 getroffen werden. Anders bei einer Bandkantenerfassung mit mehreren Kantenpunkten 12. Durch die, im Beispiel dargestellten zwölf Kantenpunkte 12 auf der rechten Bandkante 14 und auf der linken Bandkante 13 kann ermittelt werden, ob das Walzband 3 mittig läuft (a), nach links verschwenkt (b), einen Bogen bildet (c) oder wellig ausgebildet ist (d).FIG. 2 shows in simplified form the differences between a band edge detection with only one edge point 12 (left column) according to the prior art and the band edge detection according to the invention with a plurality of edge points 12 (right column). While the distance and the position of these two edge points 12 can be determined / determined with only one edge point 12, no statement can be made about the course of the rolled strip 3. Different with a band edge detection with several edge points 12. By the twelve edge points 12 on the right band edge 14 and on the left band edge 13 shown in the example, it can be determined whether the rolled strip 3 runs in the middle (a), pivoted to the left (b), forms an arc (c) or wavy (d).
Als Besonderheit kann, wie in Figur 3 dargestellt, ermittelt werden, ob das Walzband 3 Einrisse 15 an der linken Bandkante 13 und / oder der rechten Bandkante 14 aufweist. BezugszeichenlisteAs a special feature, it can be determined, as shown in FIG. 3, whether the rolled strip 3 has tears 15 at the left-hand edge 13 and / or the right-hand edge 14. LIST OF REFERENCE NUMBERS
1. Erkennungssystem1. recognition system
2. Walzspalt2nd roll gap
3. Walzband3. rolled strip
4. Kamera4. Camera
5. Kamera5. Camera
6. Sichtbereich6. Field of view
7. Sichtbereich7. Field of view
8. Bandmitte8. Mb
9. Videosignal9. Video signal
10. Videosignal10. Video signal
11. Rechner11. Calculator
12. Kantenpunkt12. Edge point
13. linke Bandkante13th left band edge
14. rechte Band kante14th right edge band
15. Einriss 15. tear

Claims

Patentansprüche claims
1. Verfahren zur Bandkantenerfassung in einer Kaltwalzanlage und / oder Bandanlage, bei dem mittels zweier optischer Erkennungssysteme berührungslos die Bandkanten (13, 14) kontinuierlich aufgenommen werden, dadurch gekennzeichnet, dass die rechte Bandkante (14) und die linke Bandkante (13) über eine Bandlänge von mehr als 800 mm mittels einer Bildaufnahmevorrichtung (4, 5) erfasst, die Bilddaten zu einem Rechner (11) übermittelt und dort bearbeitet und der so ermittelte Bandkantenverlauf bei der Regelung berücksichtigt wird.1. A method for tape edge detection in a cold rolling mill and / or belt plant, in which by means of two optical detection systems without contact, the band edges (13, 14) are continuously recorded, characterized in that the right band edge (14) and the left band edge (13) via a Tape length of more than 800 mm detected by means of an image pickup device (4, 5), the image data to a computer (11) transmitted and processed there and the band edge profile thus determined is taken into account in the scheme.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass der Band kantenverlauf durch Kantenpunkte (12) dargestellt wird.2. The method according to claim 1, characterized in that the band edge profile by edge points (12) is shown.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass mindestens acht Kantenpunkte (12) bei der Berechnung berücksichtigt werden.3. The method according to claim 2, characterized in that at least eight edge points (12) are taken into account in the calculation.
4. Verfahren nach Anspruch 1 , 2 oder 3, dadurch gekennzeichnet, dass die Kantenpunkte (12) in einem Rechner (11) durch Reduktion der Bilddaten auf die erforderlichen Datenpunkte in ihrer Win- kellage sowie ihrer Position bestimmt werden. 4. The method of claim 1, 2 or 3, characterized in that the edge points (12) in a computer (11) by reducing the image data to the required data points in their angular position and their position are determined.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die im Rechner (11 ) ermittelten Bilddaten zur Steuerung / Regelung der Walzspalteinstellung genutzt werden.5. The method according to any one of claims 1 to 4, characterized in that in the computer (11) determined image data for controlling / regulating the roll gap setting are used.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Erkennungssystem (1 ) und der Rechner (11 ) bei bestehenden Anlagen nachgerüstet werden.6. The method according to any one of claims 1 to 5, characterized in that the detection system (1) and the computer (11) are retrofitted to existing facilities.
7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass eine lückenlose Aufzeichnung des gesamten Bandverlaufs im überwachten Bereich durchgeführt wird..7. The method according to any one of claims 1 to 6, characterized in that a complete recording of the entire band profile is performed in the monitored area.
8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass nach Maßgabe des Abbildes des Bandverlaufs Bandlagen- korrekturwerte über die Walzen - Schräglage eingestellt werden.8. The method according to any one of claims 1 to 7, characterized in that are adjusted in accordance with the image of the band profile Bandlagen- correction values on the roll - inclined position.
9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die im Rechner (11) ermittelten Daten zusätzlich zur Erfassung, ggfs. Ausregelung von Bandkanteneinrissen und / oder Bandoberflächenfehlern genutzt werden. 9. The method according to any one of claims 1 to 8, characterized in that in the computer (11) determined data in addition to the detection, if necessary. Control of band edge tears and / or band surface errors are used.
PCT/EP2006/009411 2005-10-25 2006-09-28 Method for the detection of strip edges WO2007048477A1 (en)

Priority Applications (5)

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EP06792297A EP1945384A1 (en) 2005-10-25 2006-09-28 Method for the detection of strip edges
US12/083,186 US20090113968A1 (en) 2005-10-25 2006-09-28 Method for Detecting Strip Edges
JP2008536957A JP2009512559A (en) 2005-10-25 2006-09-28 Method for strip edge detection
BRPI0617752-2A BRPI0617752A2 (en) 2005-10-25 2006-09-28 strip edge detection process
CA002625494A CA2625494A1 (en) 2005-10-25 2006-09-28 Method for the detection of strip edges

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DE102005051053A DE102005051053A1 (en) 2005-10-25 2005-10-25 Method for band edge detection
DE102005051053.1 2005-10-25

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WO2007048477A1 true WO2007048477A1 (en) 2007-05-03

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CA (1) CA2625494A1 (en)
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CN102319743B (en) * 2011-05-24 2013-07-10 重庆大学 Band steel deflection and floating quantity laser scanning detection method and deflection correction system
CN104254409B (en) * 2012-04-24 2015-10-14 新日铁住金株式会社 Rolling device and rolling supervision method
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CN108050944A (en) * 2018-01-05 2018-05-18 湖北汽车工业学院 A kind of automobile tube beam measuring device and method based on image procossing
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CN108548501A (en) * 2018-05-31 2018-09-18 广州贝晓德传动配套有限公司 Edge of materials position detecting device
CN113953332A (en) * 2020-07-21 2022-01-21 宝山钢铁股份有限公司 Control method for strip steel single-side wave shape between hot continuous rolling mill frames
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US20090113968A1 (en) 2009-05-07
JP2009512559A (en) 2009-03-26
BRPI0617752A2 (en) 2011-08-02
RU2008107775A (en) 2009-09-10
CN101253008A (en) 2008-08-27
CA2625494A1 (en) 2007-05-03
EP1945384A1 (en) 2008-07-23
ZA200801370B (en) 2009-01-28
DE102005051053A1 (en) 2007-04-26

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