EP0012738A1 - Arrangement for controlling a stretch-leveler machine - Google Patents

Arrangement for controlling a stretch-leveler machine Download PDF

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Publication number
EP0012738A1
EP0012738A1 EP79890033A EP79890033A EP0012738A1 EP 0012738 A1 EP0012738 A1 EP 0012738A1 EP 79890033 A EP79890033 A EP 79890033A EP 79890033 A EP79890033 A EP 79890033A EP 0012738 A1 EP0012738 A1 EP 0012738A1
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European Patent Office
Prior art keywords
strip
stretching
degree
stretch
straightening
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EP79890033A
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German (de)
French (fr)
Inventor
Hans-Jörg Weinzinger
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Voestalpine AG
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Voestalpine AG
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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 an arrangement for controlling a stretch-leveling system with two sets of tensioning rollers for the strip to be straightened and between the tensioning roller sets provided bending rollers, which is followed by a straightening roller adjustable via an actuator, and with a control device for the controllable via the belt tension between the two tensioning roller sets Degree of stretch of the tape.
  • the metal strip under tension is plastically elongated and straightened by stretching alternating bending. With this elongation, the fibers running next to the band waves have to be stretched to the length of the fibers of the shaft belly in order to obtain a flat band.
  • the difference in length between the fibers in the corrugated area and in the non-corrugated area of the strip thus determines the lowest degree of stretch required for the flatness of a strip.
  • the degree of stretch required for the straightening of a strip is selected according to the greatest waviness of the strip and is set via the strip tension, given a bending roller arrangement is proportional to the degree of stretch.
  • the degree of stretching is based on the greatest unevenness of the strip, because the degree of stretching would also have to change the position of the straightening roller. For this reason, a control to a constant degree of stretch is also provided in known stretch bending straightening systems.
  • the invention is therefore based on the object of providing a straightening bending straightening system of the type described at the outset with a simply constructed control arrangement which permits straightening of the strip with a stretching degree which is respectively adapted to the unevenness to be straightened.
  • the invention solves this problem in that an actual value transmitter connected to a computer for the amplitudes of the band waves is arranged in front of the inlet-side tensioning roller set, and the computer supplies the minimum degree of stretching quantity calculated for the degree of stretching with the program-determined from the measured shaft amplitude as the target value to the control device and that after the tensioning roller set on the outlet side, an actual value transmitter connected to a controller for the straightening roller actuating drive is arranged for the amplitudes of any transverse strip curvatures.
  • the minimum degree of stretch for a band wave results from the ratio of the bow length to the bow string of this wave and the bow length for a given geometric shape can be derived from the bow height corresponding to the wave amplitude, which can be easily determined by measuring the sag of the band between two supports, can
  • the respectively required degree of stretching is determined in a suitably programmed computer via the actual value acquisition of the shaft amplitudes and specified as the setpoint of the control device , so that the strip is actually subjected to a stretch bending straightening process under the most favorable conditions.
  • the different degree of stretching which is adapted to the respective waviness of the band, means that the adjustment of the straightening roll must be adjusted if a straight and flat band is to be obtained.
  • the necessary change in the immersion depth of the straightening roll is consequently determined via the transverse curvature of the belt that occurs when the straightening roll is not correctly adjusted and is used to adjust the straightening roll.
  • an actual value transmitter is provided for the amplitudes of any transverse strip curvatures, which is connected to a controller controlling the actuating drive for the straightening roller.
  • the stretch-straightening system consists of two tensioning roller sets 1 and 2, between which two bending rollers 3 and one nachge switched straightening roller 4 are provided.
  • an actual value transmitter 6 for the amplitudes of the strip shafts is arranged upstream of the tensioning roller set 1 on the inlet side.
  • This actual value transmitter has two support rollers 7 for the belt 5, between which a plurality of electromagnets 8 are distributed over the bandwidth.
  • the resulting sag between the two support rollers 7 determines the air gap between the tape and the magnets, so that the voltage of the excitation winding of the magnets, the different deflection Band and thus the amplitude of the band waves can be determined.
  • the measured actual value of the amplitude of a detected band wave is fed to a computer 9, which uses this actual value and the specified data with regard to the distance between the support rollers 7 and the geometric shape of the band slack to calculate the minimum degree of stretch required for the determined shaft and this calculated degree of stretch of a control device 10 as Specifies the setpoint.
  • This control device 10 is connected to an actual value transmitter 11 for the degree of stretching, which is detected, for example, by the infeed and outfeed speed of the strip, which can be determined by measuring rollers 12.
  • the drives 13 and 14 of the tensioning roller sets 1 and 2 are controlled via the control device 10, specifically in the sense of a corresponding change in the strip tension. Simple control of the belt tension can be achieved with hydraulic tensioning of the two tensioning roller sets.
  • all motors are connected to a high-pressure line in such a way that when the connecting line is pressurized by a pressure-controllable pump the inlet-side tensioning roller set generates a backward pull and the outlet-side tensioning roller set generates a forward-facing pull.
  • the desired degree of stretching can thus be achieved via the belt tension between the two tensioning roller sets 1 and 2. This degree of stretching ensures uniform residual stresses in the sheet metal plane caused by the bending stretching on the bending rollers 3, but the bending stretching also causes the tension-free fiber to be displaced from the center of the strip, so that when the strip springs back freely, curvatures occur in the transverse and longitudinal directions.

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

Abstract

In a stretch-leveller machine, two sets (1, 2) of tension rollers for the strip (5) to be levelled are provided, and between these sets (1, 2) of tension rollers bending rollers (3), downstream of which is arranged a straightening roller (4) which can be set via an actuator (15). In order to ensure stretch-levelling with a degree of stretching matched to the respective unevennesses to be levelled, an actual-value sensor (6) for the amplitudes of the strip waves is arranged upstream of the set (1) of tension rollers on the intake side. From the wave amplitude determined, the minimum degree of stretching required for this amplitude is calculated in a computer (9) connected to the actual-value sensor (6) and fed as desired value to a control device (10) for the degree of stretching, which can be controlled via the strip tension between the two sets (1, 2) of tension rollers. In addition, an actual-value sensor (17) for the amplitudes of any transverse bends in the strip, which sensor is connected to a controller (16) for the levelling-roller actuator (15), is arranged downstream of the set (2) of tension rollers on the outlet side. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Anordnung zum Steuern einer Streckbiegerichtanlage mit zwei Spannrollensätzen für das zu richtende Band und zwischen den Spannrollensätzen vorgesehenen Biegerollen, denen eine über einen Stelltrieb anstellbare Richtrolle nachgeordnet ist, sowie mit einer Regelungseinrichtung für den über den Bandzug zwischen den beiden Spannrollensätzen steuerbaren Streckgrad des Bandes.The invention relates to an arrangement for controlling a stretch-leveling system with two sets of tensioning rollers for the strip to be straightened and between the tensioning roller sets provided bending rollers, which is followed by a straightening roller adjustable via an actuator, and with a control device for the controllable via the belt tension between the two tensioning roller sets Degree of stretch of the tape.

Das unter Zug stehende Metallband wird beim Streckbiegerichten durch fortlaufendes wechselseitiges Biegen plastisch gelängt und gerichtet. Bei dieser Längung müssen die neben den Bandwellen verlaufenden Fasern auf die Länge der Fasern des Wellenbauches gestreckt werden, um ein planes Band zu erhalten. Die Längendifferenz zwischen den Fasern im Wellenbereich und im nicht gewellten Bereich des Bandes bestimmt somit den für die Planheit eines Bandes erforderlichen, geringsten Streckgrad. Der für das Streckbiegerichten eines Bandes erforderliche Streckgrad wird nach der größten vorkommenden Welligkeit des Bandes gewählt und über den Bandzug eingestellt, der bei gegebener Biegerollenanordnung dem Streckgrad proportional ist. Da durch das Biegestrecken des Bandes im Band Restspannungen vorhanden sind, deren Nullinie im allgemeinen nicht mit der Bandmitte zusammenfällt, ergibt sich beim freien Rückfedern des Bandes eine Längs- und eine Querkrümmung. Das Band muß demnach noch einmal gebogen werden, um durch eine Spannungsüberlagerung die Nullinie der Eigenspannungen des Bandes in die Bandmitte, also in die ursprünglich neutrale Zone zu verlegen, so daß das Band gerade und eben ist. Den Biegerollen ist daher eine Richtrolle nachgeordnet, die so eingestellt wird, daß das Band nach dem Überlaufen eben ist.The metal strip under tension is plastically elongated and straightened by stretching alternating bending. With this elongation, the fibers running next to the band waves have to be stretched to the length of the fibers of the shaft belly in order to obtain a flat band. The difference in length between the fibers in the corrugated area and in the non-corrugated area of the strip thus determines the lowest degree of stretch required for the flatness of a strip. The degree of stretch required for the straightening of a strip is selected according to the greatest waviness of the strip and is set via the strip tension, given a bending roller arrangement is proportional to the degree of stretch. Since there are residual tensions in the strip due to the stretching of the strip, whose zero line generally does not coincide with the center of the strip, there is a longitudinal and a transverse curvature when the strip springs back freely. The tape must therefore be bent again so that the zero line of the residual stresses of the tape can be laid in the middle of the tape, i.e. in the originally neutral zone, so that the tape is straight and even. The bending rollers are therefore followed by a straightening roller, which is set so that the belt is flat after overflowing.

Obwohl es aus verschiedenen Gründen günstig ist, beispielsweise wegen einer möglichst geringen Beeinflussung der Werkstoffeigenschaften, mit dem jeweils kleinstmöglichen Streckgrad zu richten, wird der Streckgrad auf die größe Unplanheit des Bandes abgestellt, weil mit dem Streckgrad auch die Anstellung der Richtrolle verändert werden müßte. Aus diesem Grunde ist auch bei bekannten Streckbiegerichtanlagen eine Regelung auf konstanten Streckgrad vorgesehen.Although it is beneficial for various reasons, for example due to the least possible influence on the material properties, straightening with the smallest possible degree of stretching, the degree of stretching is based on the greatest unevenness of the strip, because the degree of stretching would also have to change the position of the straightening roller. For this reason, a control to a constant degree of stretch is also provided in known stretch bending straightening systems.

So ist es beispielsweise bekannt (AT-PS 345 063), die Anpreßkraft der Spannrollen der Spannrollensätze an das Band in Abhängigkeit von der gemessenen Zugspannung auf das Band zu regeln, so daß sich ändernde Reibungsverhältnisse berücksichtigt werden können. Da die Reibungskräfte einerseits vom Reibungskoeffizienten und anderseits von der Anpreßkraft abhängen, kann über die Anpreßkraft die Auswirkung der sich ändernden Reibungskoeffizienten ausgeglichen werden.For example, it is known (AT-PS 345 063) to regulate the pressure force of the tensioning rollers of the tensioning roller sets on the belt as a function of the measured tensile stress on the belt, so that changing frictional relationships can be taken into account. Since the frictional forces depend on the one hand on the friction coefficient and on the other hand on the contact pressure, the effect of the changing friction coefficients can be compensated for via the contact pressure.

Bei einer anderen bekannten Streckbiegerichtanlage (US-PS 3 962 894), bei der der Streckgrad konstant gehalten werden soll, werden die Spannrollen der beiden Spannrollensätze mit einem abgestuften Drehmoment angetrieben, wobei das vorbestimmte Antriebsdrehmoment jeweils über ein Ausgleichsgetriebe sichergestellt wird, dessen freies Getriebeglied über einen Hilfsmotor zusätzlich angetrieben werden kann. Diese Hilfsmotoren werden bezüglich ihres abgegebenen Drehmomentes über einen Soll-Istwertvergleich geregelt, um wiederum eine konstante Zugspannung für den Richtvorgang zu gewährleisten, was wegen des für die vorkommende Welligkeit häufig zu großen Streckgrades eine entsprechende Beeinflussung der Werkstoffeigenschaften mit sich bringt.In another known stretch bending straightening system (US Pat. No. 3,962,894), in which the degree of stretching is to be kept constant, the tensioning rollers of the two Tensioner roller sets are driven with a graduated torque, the predetermined drive torque being ensured in each case by means of a differential gear, the free gear member of which can additionally be driven by an auxiliary motor. The torque output of these auxiliary motors is regulated by means of a target / actual value comparison in order in turn to ensure a constant tensile stress for the straightening process, which, due to the degree of stretching which is often too great for the ripple that occurs, has a corresponding influence on the material properties.

Der Erfindung liegt somit die Aufgabe zugrunde, eine Streckbiegerichtanlage der eingangs geschilderten Art mit einer einfach aufgebauten Steueranordnung zu versehen, die ein Streckbiegerichten des Bandes mit jeweils an die zu richtenden Unplanheiten angepaßtem Streckgrad erlaubt.The invention is therefore based on the object of providing a straightening bending straightening system of the type described at the outset with a simply constructed control arrangement which permits straightening of the strip with a stretching degree which is respectively adapted to the unevenness to be straightened.

Die Erfindung löst die gestellte Aufgabe dadurch, daß vor dem einlaufseitigen Spannrollensatz ein an einem Rechner angeschlossener Istwertgeber für die Amplituden der Bandwellen angeordnet ist, daß von dem Rechner die für den Streckgrad jeweils mit dem programmbedingt aus der gemessenen Wellenamplitude errechnete Mindeststreckgradgröße als Sollwert der Regelungseinrichtung zugeführt ist und daß nach dem auslaufseitigen Spannrollensatz ein an einen Regler für den Richtrollenstelltrieb angeschlossener Istwertgeber für die Amplituden allfälliger Bandquerkrümmungen angeordnet ist.The invention solves this problem in that an actual value transmitter connected to a computer for the amplitudes of the band waves is arranged in front of the inlet-side tensioning roller set, and the computer supplies the minimum degree of stretching quantity calculated for the degree of stretching with the program-determined from the measured shaft amplitude as the target value to the control device and that after the tensioning roller set on the outlet side, an actual value transmitter connected to a controller for the straightening roller actuating drive is arranged for the amplitudes of any transverse strip curvatures.

Da sich der Mindeststreckgrad für eine Bandwelle aus dem Verhältnis von der Bogenlänge zur Bogensehne dieser Welle ergibt und sich die Bogenlänge bei gegebener geometrischer Form aus der der Wellenamplitude entsprechenden Bogenhöhe ableiten läßt, die meßtechnisch einfach über den Durchhang des Bandes zwischen zwei Auflagen bestimmt werden kann, kann über die Istwerterfassung der Wellenamplituden der jeweils erforderliche Streckgrad in einem entsprechend programmierten Rechner ermittelt und als Sollwert der Regelungseinrichtung vorgegeben werden.Die mit dem jeweils günstigsten Streckgrad als Führungsgröße beaufschlagte Regelungseinrichtung steuert den Bandzug, beispielsweise über die Antriebe der Spannrollensätze nach dem vorgegebenen Sollwert des Streckgrades aus, so daß das Band tatsächlich unter den günstigsten Bedingungen einem Streckbiegerichtvorgang unterworfen wird. Der an die jeweilige Welligkeit des Bandes angepaßte, unterschiedliche Streckgrad bewirkt aber, daß die Anstellung der Richtrolle nachgeführt werden muß, wenn ein gerades und ebenes Band erhalten werden soll. Über die bei nicht richtiger Anstellung der Richtrolle auftretende Querkrümmung des Bandes wird folglich die notwendige Änderung der Eintauchtiefe der Richtrolle bestimmt und zur Verstellung der Richtrolle ausgenützt. Zu diesem Zweck ist ein Istwertgeber für die Amplituden allfälliger Bandquerkrümmungen vorgesehen, der an einen den Stelltrieb für die Richtrolle ansteuernden Regler angeschlossen ist. Trotz der sich mit der Welligkeit des Bandes verändernden Verhältnisse an der Streckbiegerichtanlage kann somit ein gerades und ebenes Band in vorteilhafter Weise erhalten werden.Since the minimum degree of stretch for a band wave results from the ratio of the bow length to the bow string of this wave and the bow length for a given geometric shape can be derived from the bow height corresponding to the wave amplitude, which can be easily determined by measuring the sag of the band between two supports, can The respectively required degree of stretching is determined in a suitably programmed computer via the actual value acquisition of the shaft amplitudes and specified as the setpoint of the control device , so that the strip is actually subjected to a stretch bending straightening process under the most favorable conditions. However, the different degree of stretching, which is adapted to the respective waviness of the band, means that the adjustment of the straightening roll must be adjusted if a straight and flat band is to be obtained. The necessary change in the immersion depth of the straightening roll is consequently determined via the transverse curvature of the belt that occurs when the straightening roll is not correctly adjusted and is used to adjust the straightening roll. For this purpose, an actual value transmitter is provided for the amplitudes of any transverse strip curvatures, which is connected to a controller controlling the actuating drive for the straightening roller. In spite of the changing conditions on the stretch-leveling system with the waviness of the strip, a straight and flat strip can thus be obtained in an advantageous manner.

In der Zeichnung ist der Erfindungsgegenstand in einem Ausführungsbeispiel schematisch dargestellt, und zwar wird eine erfindungsgemäße Anordnung zum Steuern einer Streckbiegerichtanlage im vereinfachten Blockschaltbild gezeigt.In the drawing, the subject matter of the invention is shown schematically in one exemplary embodiment, namely an arrangement according to the invention for controlling a stretch bending straightening system is shown in a simplified block diagram.

Gemäß der Zeichnung besteht die Streckbiegerichtanlage aus zwei Spannrollensätzen 1 und 2, zwischen denen zwei Biegerollen 3 und eine nachgeschaltete Richtrolle 4 vorgesehen sind. Zur Erfassung der Planheit des zu richtenden Bandes 5 ist dem einlaufseitigen Spannrollensatz 1 ein Istwertgeber 6 für die Amplituden der Bandwellen vorgeordnet. Dieser Istwertgeber weist zwei Auflagerollen 7 für das Band 5 auf, zwischen denen mehrere über die Bandbreite verteilte Elektromagnete 8 angeordnet sind. Über diese Elektromagnete 8 werden etwa senkrecht auf die Bandoberfläche stehende Kräfte auf das Band ausgeübt, wobei der dadurch bedingte Durchhang zwischen den beiden Auflagerollen 7 den Luftspalt zwischen dem Band und den Magneten bestimmt, so daß über die Spannung der Erregerwicklung der Magnete die unterschiedliche Ablenkweite des Bandes und damit die Amplitude der Bandwellen ermittelt werden kann. Der gemessene Istwert der Amplitude einer festgestellten Bandwelle wird einem Rechner 9 zugeführt, der aus diesem Istwert und den vorgegebenen Daten hinsichtlich des Abstandes der Auflagerollen 7 und der geometrischen Form des Banddurchhanges den für die festgestellte Welle erforderlichen Mindeststreckgrad errechnet und diesen errechneten Streckgrad einer Regelungseinrichtung 10 als Sollwert vorgibt. Diese Regelungseinrichtung 10 ist an einen Istwertgeber 11 für den Streckgrad angeschlossen, der beispielsweise über die durch Meßrollen 12 bestimmbare Ein- und Auslaufgeschwindigkeit des Bandes erfaßt wird. Auf Grund einer Soll-Istwert-Differenz werden über die Regelungseinrichtung 10 die Antriebe 13 und 14 der Spannrollensätze 1 und 2 angesteuert, und zwar im Sinne einer entsprechenden Änderung des Bandzuges. Eine einfache Steuerung des Bandzuges kann bei einer hydraulischen Verspannung der beiden Spannrollensätze erreicht werden. Bei einer solchen Verspannung sind alle Motoren so an eine Hochdruckleitung angeschlossen, daß bei der Beaufechlagung der Verbindungsleitung durch eine druckregelbare Pumpe der einlaufseitige Spannrollensatz einen rückwärts gerichteten Zug und der auslaufseitige Spannrollensatz einen vorwärts gerichteten Zug erzeugt. Über den Bandzug zwischen den beiden Spannrollensätzen 1 und 2 kann somit der jeweils gewünschte Streckgrad erreicht werden. Dieser Streckgrad gewährleistet zwar durch das Biegestrecken an den Biegerollen 3 bedingte, gleichförmige Restspannungen in der Blechebene, doch bewirkt das Biegestrecken auch eine Verschiebung der spannungsfreien Faser aus der Bandmitte, so daß sich beim freien Rückfedern des Bandes Krümmungen in Quer- und Längsrichtung einstellen. Diese Krümmungen können nur beseitigt werden, wenn durch ein richtendes Biegen den Restspannungen eine Rückverschiebung der spannungsfreien Faser in die Bandmitte bewirkende Spannungen überlagert werden können. Dies wird durch die Richtrolle 4 erreicht, die über einen Stelltrieb 15 verschieden angestellt werden kann. Der Stelltrieb 15, im Ausführungsbeispiel ein hydraulischer Zylinder, wird nun über einen Regler 16 angesteuert, der über einen Istwertgeber 17 für die Amplituden allfälliger Bandquerkrümmungen beaufschlagt wird. Dieser Istwertgeber ist in der gleichen Weise wie der Istwertgeber 6 aufgebaut. Wird über den Istwertgeber 17 eine Querkrümmung des Bandes 5 festgestellt, so wird der Stelltrieb 15 über den Regler 16 so lange verstellt, bis die Querkrümmung verschwunden ist. Das aus der Streckbiegerichtanlage auslaufende Band ist daher gerade und eben.According to the drawing, the stretch-straightening system consists of two tensioning roller sets 1 and 2, between which two bending rollers 3 and one nachge switched straightening roller 4 are provided. In order to determine the flatness of the strip 5 to be straightened, an actual value transmitter 6 for the amplitudes of the strip shafts is arranged upstream of the tensioning roller set 1 on the inlet side. This actual value transmitter has two support rollers 7 for the belt 5, between which a plurality of electromagnets 8 are distributed over the bandwidth. About these electromagnets 8 are approximately perpendicular to the tape surface forces exerted on the tape, the resulting sag between the two support rollers 7 determines the air gap between the tape and the magnets, so that the voltage of the excitation winding of the magnets, the different deflection Band and thus the amplitude of the band waves can be determined. The measured actual value of the amplitude of a detected band wave is fed to a computer 9, which uses this actual value and the specified data with regard to the distance between the support rollers 7 and the geometric shape of the band slack to calculate the minimum degree of stretch required for the determined shaft and this calculated degree of stretch of a control device 10 as Specifies the setpoint. This control device 10 is connected to an actual value transmitter 11 for the degree of stretching, which is detected, for example, by the infeed and outfeed speed of the strip, which can be determined by measuring rollers 12. On the basis of a setpoint / actual value difference, the drives 13 and 14 of the tensioning roller sets 1 and 2 are controlled via the control device 10, specifically in the sense of a corresponding change in the strip tension. Simple control of the belt tension can be achieved with hydraulic tensioning of the two tensioning roller sets. With such a bracing, all motors are connected to a high-pressure line in such a way that when the connecting line is pressurized by a pressure-controllable pump the inlet-side tensioning roller set generates a backward pull and the outlet-side tensioning roller set generates a forward-facing pull. The desired degree of stretching can thus be achieved via the belt tension between the two tensioning roller sets 1 and 2. This degree of stretching ensures uniform residual stresses in the sheet metal plane caused by the bending stretching on the bending rollers 3, but the bending stretching also causes the tension-free fiber to be displaced from the center of the strip, so that when the strip springs back freely, curvatures occur in the transverse and longitudinal directions. These curvatures can only be eliminated if a straightening bending can be superimposed on the residual tensions causing the tension-free fiber to be shifted back into the middle of the belt. This is achieved by the straightening roller 4, which can be set differently via an actuator 15. The actuating drive 15, in the exemplary embodiment a hydraulic cylinder, is now controlled by a controller 16, which is acted upon by an actual value transmitter 17 for the amplitudes of any band transverse curvatures. This actual value transmitter is constructed in the same way as the actual value transmitter 6. If a transverse curvature of the belt 5 is determined via the actual value transmitter 17, the actuator 15 is adjusted via the controller 16 until the transverse curvature has disappeared. The strip running out of the stretch-leveling system is therefore straight and even.

Claims (1)

Anordnung zum Steuern einer Streckbiegerichtanlage mit zwei Spannrollensätzen für das zu richtende Band und zwischen den Spannrollensätzen vorgesehenen Biegerollen, denen eine über einen Stelltrieb anstellbare Richtrolle nachgeordnet ist, sowie mit einer Regelungseinrichtung für den über den Bandzug zwischen den beiden Spannrollensätzen steuerbaren Streckgrad des Bandes, dadurch gekennzeichnet, daß vor dem einlaufseitigen Spannrollensatz (1) ein an einem Rechner (9) angeschlossener Istwertgeber (6) für die Amplituden der Bandwellen angeordnet ist, daß von dem Rechner (9) die für den Streckgrad jeweils mit dem programmbedingt aus der gemessenen Wellenamplitude errechnete Mindeststreckgradgröße als Sollwert der Regelungseinrichtung (10) zugeführt ist und daß nach dem auslaufseitigen Spannrollensatz (2) ein an einen Regler (16) für den Richtrollenstelltrieb (15) angeschlossener Istwertgeber (17) für die Amplituden allfälliger Bandquerkrümmungen angeordnet ist.Arrangement for controlling a stretch-leveling system with two tensioning roller sets for the strip to be straightened and bending rollers provided between the tensioning roller sets, which is followed by a straightening roller which can be adjusted via an actuator, and with a control device for the degree of stretching of the strip which can be controlled via the strip tension between the two tensioning roller sets that an actual value transmitter (6) connected to a computer (9) for the amplitudes of the tape shafts is arranged in front of the input-side tensioning roller set (1), that the computer (9) calculates the minimum degree of stretching for the degree of stretching, which is calculated with the program-determined from the measured shaft amplitude is supplied as the setpoint to the control device (10) and that an actual value transmitter (17) connected to a controller (16) for the straightening roller actuating drive (15) for the amplitudes of any transverse strip curvatures is arranged after the tensioning roller set (2) on the outlet side.
EP79890033A 1978-12-12 1979-09-21 Arrangement for controlling a stretch-leveler machine Withdrawn EP0012738A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT8823/78 1978-12-12
AT882378A AT358900B (en) 1978-12-12 1978-12-12 ARRANGEMENT FOR CONTROLLING A STRETCH BREADING MACHINE

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EP0012738A1 true EP0012738A1 (en) 1980-06-25

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EP79890033A Withdrawn EP0012738A1 (en) 1978-12-12 1979-09-21 Arrangement for controlling a stretch-leveler machine

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AT (1) AT358900B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062025A1 (en) * 1981-03-26 1982-10-06 VOEST-ALPINE Aktiengesellschaft Device for winding straightened steel strips
FR2567049A1 (en) * 1984-07-06 1986-01-10 Mitsubishi Heavy Ind Ltd METHOD FOR CORRECTING THE DEFORMATIONS OF A BANDED FLAT FLAT PRODUCT
EP0732160A3 (en) * 1995-03-14 1997-08-20 Bwg Bergwerk Walzwerk 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
US6197129B1 (en) * 2000-05-04 2001-03-06 The United States Of America As Represented By The United States Department Of Energy Method for producing ultrafine-grained materials using repetitive corrugation and straightening
CN113391654A (en) * 2021-05-31 2021-09-14 中冶南方工程技术有限公司 Transmission control method for multi-roll straightener

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DE3525343C1 (en) * 1985-04-20 1986-12-11 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg Method and apparatus for the continuous levelling of metal strips

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EP0062025A1 (en) * 1981-03-26 1982-10-06 VOEST-ALPINE Aktiengesellschaft Device for winding straightened steel strips
FR2567049A1 (en) * 1984-07-06 1986-01-10 Mitsubishi Heavy Ind Ltd METHOD FOR CORRECTING THE DEFORMATIONS OF A BANDED FLAT FLAT PRODUCT
EP0732160A3 (en) * 1995-03-14 1997-08-20 Bwg Bergwerk Walzwerk 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
EP0867241A2 (en) * 1995-03-14 1998-09-30 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh 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
EP0867241A3 (en) * 1995-03-14 1998-10-21 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh 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
US6197129B1 (en) * 2000-05-04 2001-03-06 The United States Of America As Represented By The United States Department Of Energy Method for producing ultrafine-grained materials using repetitive corrugation and straightening
WO2001083129A1 (en) * 2000-05-04 2001-11-08 The Regents Of The University Of California Method for producing ultrafine-grained materials using repetitive corrugation and straightening
CN113391654A (en) * 2021-05-31 2021-09-14 中冶南方工程技术有限公司 Transmission control method for multi-roll straightener

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ATA882378A (en) 1980-02-15

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