EP3325186B1 - System and method for removing flatness faults from a metal flat product - Google Patents

System and method for removing flatness faults from a metal flat product Download PDF

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Publication number
EP3325186B1
EP3325186B1 EP16741297.2A EP16741297A EP3325186B1 EP 3325186 B1 EP3325186 B1 EP 3325186B1 EP 16741297 A EP16741297 A EP 16741297A EP 3325186 B1 EP3325186 B1 EP 3325186B1
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EP
European Patent Office
Prior art keywords
straightening
rollers
installation
flat product
roller
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EP16741297.2A
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German (de)
French (fr)
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EP3325186A1 (en
Inventor
Frank Werner
Roman Dehmel
Olaf HAUSMANN
Gerhard Horn
Kerstin SPILL
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SMS Group GmbH
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SMS Group GmbH
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Publication of EP3325186A1 publication Critical patent/EP3325186A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • the invention relates to a system for eliminating flatness errors of a metallic flat product, in particular a sheet or a strip, comprising a plurality of straightening rollers arranged on opposite sides of the flat product.
  • the invention relates to a method for eliminating flatness errors of a metallic flat product, in particular a sheet or a strip, using a straightening system.
  • Flatness errors of a metallic flat product are deviations of the large surfaces of the flat product from an ideal, in particular flat, target surface.
  • the flatness errors can occur, for example, in the form of waves or bulges.
  • the flatness of a flat product is an essential quality feature of the flat product.
  • Flatness defects are uneven elongations and compressions in the material structure of a flat product, which arise primarily through a rolling process and / or a heat treatment of the flat product. It is known to use either roller straightening machines or bending presses for eliminating flatness flatness defects.
  • a roller leveling machine comprises a plurality of straightening rollers arranged on opposite sides of the flat product to be treated in order to be able to eliminate center and edge waves as well as other flatness errors.
  • a roller leveler works lengthwise and corrects primarily uniaxial flatness errors in the direction of flow of the flat product through the Roller straightener. In the transverse direction, only a limited correction possibility is given.
  • a discontinuous bending process is carried out in which a press head exerts a force locally on the flat product to correct flatness defects. Due to the local exertion of force flatness errors can be corrected in multi-axis direction.
  • a bending process is associated with a high cost in terms of the positioning of the flat product relative to the press head and thereby with a very low productivity.
  • the generic WO 2013/135688 A1 discloses a continuous apparatus for straightening metal strip.
  • the device comprises a plurality of straightening rollers arranged on opposite sides of the metal strip to be straightened.
  • Each straightening roller can be assigned in the transverse direction side by side, individually controllable actuators, with which an axial bending curve of the respective straightening roller to optimize the straightening process is adjustable.
  • EP 2 475 473 B1 relates to a straightening machine for a belt-shaped material, comprising: a rigid lower support from which extends a plurality of vertical uprights arranged on either side of a longitudinal flow axis of the band-shaped material, a lower rigid straightening cartridge, the lower rigid straightening cartridge undergoing operation during operation of the belt Straightening machine supported on the rigid support, an upper straightening cassette, each cassette comprising a plurality of spaced rollers which are rotatably mounted in bearings with axes perpendicular to the longitudinal axis of the material extending axes.
  • the straightening machine comprises: an upper rigid support connected to the vertical uprights and stably fixed to the upper end of each upright, movable means for fixing the upper ones
  • Straightening cassette on the upper support which allow the movement of the upper straightening cassette, means for translationally moving the upper straightening cassette relative to the upper rigid support between a rest position in which the rolls of the upper straightening cassette are removed from the rolls of the lower straightening cassette, and a Directional position in which the rollers of the upper straightening cassette are brought to the rollers of the lower straightening cassette to give the band a wavy path, the means are suitable for moving, the deflection of the upper straightening cassette, by the through the passage of the straightened band conditional release force is caused to compensate.
  • US 3 156 288 A discloses a leveler with means for tilting work rolls longitudinally (conveying direction through the leveler) and / or in the transverse direction, the work rolls having two cooperating wedge elements which are rotatable relative to each other.
  • An upper roll assembly includes work rolls disposed on a frame and supported by rollers in holders. The distance between the upper roll assembly and a lower roll assembly comprising work rolls and back-up rolls is adjusted via a handwheel which drives screw spindles via tie rods and gears to raise or lower a crosshead carrying the upper roll assembly. The upper work rolls are adjusted by adjusting the back-up rolls by operating the handwheel.
  • An object of the invention is to make the removal of flatness errors of a metallic flat product, in particular a sheet or a strip, more flexible and simpler and thus more cost-effective.
  • a plant according to the invention for eliminating flatness defects of a metallic flat product in particular a sheet or a strip, comprises a plurality of straightening rolls arranged on opposite sides of the flat product, wherein at least two cooperating straightening rolls arranged on opposite sides of the flat product each have at least three axially adjacently disposed, individually engageable Have partial rolls.
  • a continuous straightening process can be carried out with the system according to the invention, with which, in particular uniaxial, flatness error of the slab can be corrected in the direction of passage.
  • a discontinuous bending presses can be carried out by a targeted individual employment of the sub-rollers with the system according to the invention, in which the individual sub-rollers can be used as press heads to correct multi-axial flatness error of the flat product can.
  • the sub-rollers with the system according to the invention in particular continuous, combined straightening and bending presses are performed during a single pass of the slab through the system.
  • the sub-rollers as press heads can also act in the transverse direction and at the same time assume a conventional directional function by a superimposed employment.
  • the sub-rollers act directly on the flat product.
  • the respective sub-roller can be controlled like a press tool of a bending press in order to correct local, in particular multiaxial, flatness errors of the flat product.
  • the straightening and the bending presses can be carried out by means of a single system according to the invention.
  • this requires two separate systems, namely one for straightening and one for bending presses. Consequently, conventionally, either in a batch operation of a bending press machine in a plurality of axes is bent or uniaxially directed in a continuous operation of a straightening system.
  • at least two different types of plant must be maintained, both of which are not always fully utilized. This leads to high investment costs for the two systems and correspondingly high operating costs.
  • only a single system according to the invention must be maintained, which is accompanied by a significant reduction of investment costs and operating costs.
  • the system according to the invention may also comprise three or more straightening rollers each having at least three axially adjacently arranged, individually engageable part rollers.
  • Such a straightening roller may also have four or more axially adjacent to each other, individually engageable part rollers.
  • the sub-rollers of each straightening roller can be actively adjusted in each case via at least one own adjusting unit.
  • the hiring units are designed for this purpose individually, in particular individually, controllable.
  • the respective sub-roller can in particular also be inclined relative to the longitudinal central axis of the respective straightening roller.
  • a combination of force and position control can be used.
  • the pitching rollers of a straightening roller associated with adjusting units can be made jointly via a common Anstelltechnik, which is particularly advantageous in terms of An horraufwands for a single straightening process.
  • At least one adjusting unit comprises at least one mechanical, electromechanical, pneumatic or hydraulic actuator. Also, at least one adjusting unit may comprise a combination of at least two of these actuator variants.
  • At least the adjusting units associated with the axially outer part rollers of one of the two straightening rollers each have at least one pivoting unit with which the respective part roller can be adjusted passively inclined to the longitudinal axis of this straightening roller.
  • the inclination position of the respective outer part roller can be passively adapted to the bending line set with the cooperating, actively engageable part roller on the opposite side of the flat product, without the need for an active control.
  • the swivel unit can pivot the respective sub-roller to allow a running in the direction of passage of the flat product axis.
  • the pivot unit can enable pivoting of the respective sub-roller about an axis extending transversely to the direction of passage.
  • the pivoting unit may be designed such that upon a pivoting of the respective sub-roller a restoring force is generated by it, with which the sub-roller can be acted upon with force in the direction of its non-pivoted position.
  • an edge support and surface damage of the flat product by the contact between the end section of the sub-roller and the flat product can be reliably avoided with the pivoting unit.
  • At least one adjusting unit has at least one wedge-lifting unit.
  • the sub-roller associated with the adjusting unit is continuously and very accurately adjustable.
  • the wedge-lifting unit comprises two wedges with wedge surfaces arranged opposite one another, which can be guided past one another, by means of whose relative movements the employment of the sub-roller takes place.
  • a further advantageous embodiment provides that at least one part roller is provided at least one axial end portion with an outer diameter reduction.
  • an edge wear and surface damage of the flat product by the contact between the end portion of the sub-roller and the flat product can be reliably avoided.
  • the bending function of the sub-roller is intensified.
  • the outer diameter reduction can be made, for example, by tangentially grinding a circumferential radius at the end portion of the sub-roll.
  • the cooperating, the partial rollers having straightening rollers are offset with respect to a direction of passage of the flat product through the system or not offset from each other.
  • the co-operating, the partial rolls having straightening rollers may be arranged with respect to the direction of passage of the flat product through the system between conventional continuous straightening rollers.
  • the system comprises at least one signal technically connectable to the AnstelleinRIC control and / or control electronics, which is set up to control the Anstellein whatsoever depending on the quality and position of the flatness of the flat product such that the plant optionally a straightening, a bending press or a combined straightening and bending presses is feasible.
  • the respective quality and position of the flatness errors can be determined in advance. This can be done in the course of an automated data logging or a manual data logging or simply by an experienced eye of an operator. Quality information from a production planning and control system can also be considered.
  • the control and / or regulating electronics can select the respective mode of operation of the system taking into account information or specifications as well as evaluation criteria on the respective type of error.
  • the sub-rollers of a straightening roller are synchronized and act as a continuous straightening roller.
  • the operating mode "straightening” it is possible to dispense with the use of the partial rollers or the correspondingly designed straightening rollers.
  • the flatness of the flat product is only in uniaxial direction, as in a conventional roller straightening machine, improved.
  • "bending presses” is an isolated operation of the part rolls having straightening rolls according to a conventional bending press. Local, multiaxial flatness errors of the slab are corrected.
  • the system comprises at least one detectable device which can be connected to the control and / or regulating electronics in order to detect a quality and position of the flatness error of the flat product to be treated with the system or of the system treated with the system.
  • a subjective flatness evaluation can be replaced by an objective flatness evaluation by the control and / or regulating electronics.
  • the inlet-side detection of the quality and position of the flatness error of the flat product to be treated with the system which is also required for the choice of the respective operating mode of the system, serves for a preset of the system (feed-forward control).
  • About the outlet detection of quality and position the flatness error of the flat product treated with the system may be provided with a modified setup (feed backward control).
  • a bending press or a combined straightening and bending presses is performed with the straightening system.
  • Figures 1 and 2 schematically show possible convex or concave Richtspaltgeometrien to eliminate flatness errors of an unplanned, metallic flat product 2, in particular a sheet or a strip.
  • the plant 1 comprises a plurality of straightening rollers 3 and 4 arranged on opposite sides of the flat product 2, of which in FIG. 1 only two are shown.
  • the cooperating straightening rollers 3 and 4 shown each have three axially adjacently arranged, individually engageable part rollers 5 and 6, respectively.
  • the sub-rollers 5 and 6 of each straightening roller 3 and 4 are each active on at least one own Anstellech 7 corresponding to the double arrows 8.
  • At least one adjusting unit 7 may have at least one mechanical, electromechanical, pneumatic or hydraulic actuator, not shown.
  • the sub-rollers 6 are shown as a solid line in a state in which the actuators do not work.
  • At least one sub-roller 5 or 6 may be provided on at least one axial end portion with an outer diameter reduction, not shown.
  • the cooperating, the sub-rollers 5 and 6 having straightening rollers 3 and 4 may be with respect to a passage direction x of the flat product 2 offset by the system 1 or not offset from each other.
  • the adjusting units 7 assigned to the axially outer part rollers 6 of the straightening roller 4 each have a pivoting unit 9 with which the respective part rollers 6, as in FIG FIG. 1 shown, passively inclined to the longitudinal central axis 10 of the straightening roller 4 is adjustable.
  • Each pivoting unit 7 comprises a rocker 11 which is pivotally mounted about an axis 12 aligned parallel to the passage direction x of the flat product 2 through the system 1.
  • each pivoting unit 7 comprises two compression springs 13, which each generate a restoring force upon pivoting of the rocker 11 from the position shown, with which the rocker 11 is acted upon in the direction of the position shown with force.
  • the adjusting units 7 assigned to the axially outer sub-rollers 6 each have a wedge-lifting unit 14 with two wedges 15 and 16, by the relative position of which the respective setting of the respective sub-roller 6 is defined.
  • the adjusting units 7 are jointly employable via a common adjusting unit 17, which has a wedge-lifting system formed by the wedges 18 and 19.
  • the system 1 comprises a signaling technology with the Anstelleinigan 7 connectable, not shown control and / or control electronics, which is adapted to control the Anstelleinigan 7 depending on the respective quality and position of the flatness error of the metallic flat product 2 such that with the system 1 optional a straightening, a bending presses or a combined straightening and bending presses is feasible.
  • the system 1 can furthermore have at least one detection device (not shown) connectable to the control and / or regulating electronics for detecting a quality and position of the flatness error of the metallic flat product 2 to be treated with the system 1 or treated with the system 1.
  • at least one detection device (not shown) connectable to the control and / or regulating electronics for detecting a quality and position of the flatness error of the metallic flat product 2 to be treated with the system 1 or treated with the system 1.
  • FIGS. 3 to 5 show possible integrations of the split straightening rolls (bending press function) in or on a conventional roll straightening machine (Directional function).
  • the plant 1 comprises a plurality of straightening rolls 3, 4 and 20 arranged on opposite sides of the flat product.
  • Two arranged on opposite sides of the metallic flat product, co-operating straightening rollers 3 and 4 each have at least three axially adjacent to each other, individually engageable, not shown sub-rollers.
  • the sub-rollers of each straightening roller 3 and 4 are each active on at least one not shown own Anstellech.
  • At least one adjusting unit comprises at least one mechanical, electromechanical, pneumatic or hydraulic actuator.
  • At least the adjusting units associated with the axially outer part rollers of one of the two straightening rollers 3 and 4 can each have at least one pivot unit, not shown, with which the respective part roller is passively inclined to the longitudinal center axis 10 of this straightening roller 3 and 4, respectively.
  • At least one adjusting unit may have at least one wedge lifting unit, not shown.
  • At least one sub-roller may be provided on at least one axial end portion with an outer diameter reduction, not shown.
  • the cooperating, the partial rolls having straightening rolls 3 and 4 are offset with respect to a passage direction x of the flat product through the system 1 to each other.
  • the other straightening rollers 20 are correspondingly offset from each other and arranged to the straightening rollers 3 and 4.
  • the system 1 includes a signal technically connectable to the Anstellein inch, not shown control and / or control electronics, which is set up to control the Anstellein inch depending on the respective quality and position of the flatness error of the metallic flat product such that with the Appendix 1 optionally straightening, a bending press or a combined straightening and bending presses is feasible.
  • the system 1 may further include at least one signal technically connectable to the control and / or regulating electronics, not shown detecting means for detecting a quality and position of the flatness of the treated with the system 1 or treated with the system 1 metallic flat product.
  • FIG. 4 shows a schematic representation of another embodiment of an inventive system 1 for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt.
  • This Appendix 1 differs from the in FIG. 3 shown embodiment, that four straightening rollers 3 and 4 are present, each having at least three axially adjacent to each other, individually engageable, not shown sub-rollers, and that these straightening rollers 3 and 4 formed by the straightening rollers 20 conventional roller straightening unit with respect to the passage direction x of the metallic Flat product through the system 1 upstream or downstream.
  • the Appendix 1 corresponds to the in FIG. 3 shown embodiment, which is why here to avoid repetition of the above description of FIG. 3 is referenced.
  • FIG. 5 shows a schematic representation of another embodiment of an inventive system 1 for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt.
  • This Appendix 1 differs from the in FIG. 4 shown embodiment, that only two cooperating straightening rollers 3 and 4 are present, each having at least three axially adjacent to each other, individually engageable, not shown sub-rollers and with respect to the direction of passage x of the metallic flat product through the system 1 the straightening rollers 20 upstream or downstream are, and that the straightening rollers 3 and 4 with respect to the passage direction x of the metallic flat product through the system 1 are not offset from one another.
  • Annex 1 corresponds to the one in FIG. 3 shown embodiment, which is why here to avoid repetition of the above description of FIG. 3 is referenced.
  • FIG. 6 shows a schematic representation of a part roller 5 and 6 of a further embodiment of an inventive system for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt.
  • the sub-roller 5 and 6 can in one of the FIGS. 1 to 5 used plants are used.
  • the sub-roller 5 or 6 is provided at both axial end portions each with an outer diameter reduction 21 in the form of a radius for minimizing sheet metal surface defects by edge support.
  • FIG. 7 shows a schematic representation of an embodiment of an inventive method for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt, using a straightening unit, not shown, with the optional straightening, a bending presses or a combined straightening and bending presses are performed can.
  • the straightening system can according to one of the in the FIGS. 1 to 6 be shown embodiments.
  • step 100 data on the flatness of the metallic flat product to be treated with the straightening system are recorded.
  • step 200 it is determined whether a bending press is required to eliminate flatness defects of the metallic flat product.
  • information 300 in the form of specifications or evaluation criteria of flatness errors is taken into account, in particular whether they are edge waves, center waves, bowls or the like. This information 300 may come from tables, process models, or visual capture by an operator. If it is determined in step 200 that no bending press (-) is required, in step 400 the operating mode "straightening" is initiated, in which a single-axis Aligning the metallic flat product by means of the straightening system takes place.
  • step 200 part rolls having straightening rollers operated as a continuous straightening rollers or not involved in the straightening process.
  • step 500 the required amount of deformation is calculated.
  • step 600 it is determined in step 600 whether the quality of the flatness error is such that the flatness errors can be corrected in a single pass of the metallic flat product by the straightening system or not. If, in step 600, the flatness errors can be corrected in a single pass of the metallic flat product by the straightening system (+), the method "combined straightening and bending presses" is initiated in step 700.
  • the straightening rollers having the part rollers for correcting multi-axial flatness errors for example, bowls
  • the straightening rollers having the partial rollers can be controlled superimposed and thereby simultaneously used for correcting waves. If, in step 600, the flatness errors can not be corrected by the straightening system (-) in a single pass of the metallic flat product, the "bending presses" operating mode is initiated in step 800. In this case, multiaxial flatness errors are corrected by means of the straightening rollers having the partial rollers. Subsequently, in step 900, it is determined whether further treatment of the metallic flat product to eliminate flatness defects is required. If so, move to step 100.
  • FIG. 8 shows a schematic detail of an embodiment of a control concept for a system according to the invention for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt, given operation of the system.
  • step 110 an inlet-side detection of flatness errors of the metallic flat product takes place.
  • the step 110 may include data 210 from a Hot rolling mill, a visual inspection or measurements of the flatness of the metallic flat product to be supplied. Planarity data is generated in step 310.
  • the flatness data is subjected to a flatness error analysis in step 410.
  • the position of the respective flatness error in the width direction and length direction of the metallic flat product and the depth of the respective flatness error are determined.
  • the data from step 410 or optionally, feed-forward control, the data from step 310, is provided to a plant controller and / or controller 510 to set a plant setup.
  • the plant control and / or - regulation 510 then generates control signals 610 for controlling the adjusting units of the straightening rollers 3, 4 or 20 of the system.
  • step 710 an outflow-side detection of flatness errors of the metallic flat product can take place.
  • the resulting measurements 810 are subjected to a flatness error analysis in step 910.
  • the position of the respective flatness error in the width direction and length direction of the metallic flat product and the depth of the respective flatness error are determined.
  • step 920 at least one correction value is determined, which is supplied to the plant control and / or regulation 510.

Description

Die Erfindung betrifft eine Anlage zum Beseitigen von Planheitsfehlern eines metallischen Flachproduktes, insbesondere eines Blechs oder eines Bands, aufweisend mehrere auf gegenüberliegenden Seiten des Flachproduktes angeordnete Richtwalzen.The invention relates to a system for eliminating flatness errors of a metallic flat product, in particular a sheet or a strip, comprising a plurality of straightening rollers arranged on opposite sides of the flat product.

Des Weiteren betrifft die Erfindung ein Verfahren zum Beseitigen von Planheitsfehlern eines metallischen Flachproduktes, insbesondere eines Blechs oder eines Bands, unter Verwendung einer Richtanlage.Furthermore, the invention relates to a method for eliminating flatness errors of a metallic flat product, in particular a sheet or a strip, using a straightening system.

Planheitsfehler eines metallischen Flachproduktes, beispielsweise eines Bleches oder eines Bands, sind Abweichungen der Großflächen des Flachproduktes von einer idealen, insbesondere ebenen, Zielfläche. Die Planheitsfehler können beispielsweise in Form von Wellen oder Wölbungen auftreten. Die Planheit eines Flachproduktes ist ein wesentliches Qualitätsmerkmal des Flachproduktes. Planheitsfehler sind ungleichmäßige Längungen und Stauchungen im Materialgefüge eines Flachproduktes, die primär durch einen Walzprozess und/oder eine Wärmebehandlung des Flachproduktes entstehen. Es ist bekannt, entweder Rollenrichtmaschinen oder Biegepressen zum Beseitigen von Planheitsfehlern von Flachprodukten einzusetzen.Flatness errors of a metallic flat product, for example a metal sheet or a strip, are deviations of the large surfaces of the flat product from an ideal, in particular flat, target surface. The flatness errors can occur, for example, in the form of waves or bulges. The flatness of a flat product is an essential quality feature of the flat product. Flatness defects are uneven elongations and compressions in the material structure of a flat product, which arise primarily through a rolling process and / or a heat treatment of the flat product. It is known to use either roller straightening machines or bending presses for eliminating flatness flatness defects.

Mit Rollenrichtmaschinen ist ein kontinuierlicher Richtprozess durchführbar. Hierzu umfasst eine Rollenrichtmaschine mehrere auf gegenüberliegenden Seiten des zu behandelnden Flachproduktes angeordnete Richtwalzen, um Mitten- und Randwellen sowie andere Planheitsfehler beseitigen zu können. Eine Rollenrichtmaschine arbeitet längenbezogen und korrigiert primär einachsige Planheitsfehler in Durchlaufrichtung des Flachproduktes durch die Rollenrichtmaschine. In Querrichtung hierzu ist nur eine begrenzte Korrekturmöglichkeit gegeben.With roller leveling machines, a continuous straightening process is feasible. For this purpose, a roller leveling machine comprises a plurality of straightening rollers arranged on opposite sides of the flat product to be treated in order to be able to eliminate center and edge waves as well as other flatness errors. A roller leveler works lengthwise and corrects primarily uniaxial flatness errors in the direction of flow of the flat product through the Roller straightener. In the transverse direction, only a limited correction possibility is given.

Mit Biegepressen ist ein diskontinuierlicher Biegeprozess durchführbar, bei dem ein Pressenkopf zur Korrektur von Planheitsfehlern eine Kraft lokal auf das Flachprodukt ausübt. Durch die lokale Ausübung der Kraft können Planheitsfehler in mehrachsiger Richtung korrigiert werden. Ein Biegeprozess ist mit einem hohen Aufwand bezüglich der Positionierung des Flachproduktes relativ zu dem Pressenkopf und dadurch mit einer sehr geringen Produktivität verbunden.With bending presses, a discontinuous bending process is carried out in which a press head exerts a force locally on the flat product to correct flatness defects. Due to the local exertion of force flatness errors can be corrected in multi-axis direction. A bending process is associated with a high cost in terms of the positioning of the flat product relative to the press head and thereby with a very low productivity.

Die gattungsbildende WO 2013/135688 A1 offenbart eine kontinuierliche arbeitende Vorrichtung zum Richten von Metallband. Die Vorrichtung umfasst mehrere auf gegenüberliegenden Seiten des zu richtenden Metallbands angeordnete Richtwalzen. Jeder Richtwalze können in Querrichtung nebeneinander angeordnete, einzeln ansteuerbare Stellglieder zugeordnet sein, mit denen ein axialer Biegeverlauf der jeweiligen Richtwalze zur Optimierung des Richtvorgangs einstellbar ist.The generic WO 2013/135688 A1 discloses a continuous apparatus for straightening metal strip. The device comprises a plurality of straightening rollers arranged on opposite sides of the metal strip to be straightened. Each straightening roller can be assigned in the transverse direction side by side, individually controllable actuators, with which an axial bending curve of the respective straightening roller to optimize the straightening process is adjustable.

EP 2 475 473 B1 betrifft eine Richtmaschine für bandförmiges Material, umfassend: einen starren unteren Träger, von dem aus sich eine Vielzahl von vertikalen Ständern erstreckt, die beiderseits einer Längsablaufachse des bandförmigen Materials angeordnet sind, eine untere starre Richtkassette, wobei sich die untere starre Richtkassette während des Betriebs der Richtmaschine am starren Träger abstützt, eine obere Richtkassette, wobei jede Kassette eine Vielzahl von beabstandeten Walzen umfasst, die in Lagern mit senkrecht zur Längsablaufachse des Materials verlaufenden Achsen drehend gelagert sind. Zudem umfasst die Richtmaschine: einen oberen starren Träger, der mit den vertikalen Ständern verbunden ist und stabil am oberen Ende jedes Ständers befestigt ist, bewegliche Mittel zum Befestigen der oberen EP 2 475 473 B1 relates to a straightening machine for a belt-shaped material, comprising: a rigid lower support from which extends a plurality of vertical uprights arranged on either side of a longitudinal flow axis of the band-shaped material, a lower rigid straightening cartridge, the lower rigid straightening cartridge undergoing operation during operation of the belt Straightening machine supported on the rigid support, an upper straightening cassette, each cassette comprising a plurality of spaced rollers which are rotatably mounted in bearings with axes perpendicular to the longitudinal axis of the material extending axes. In addition, the straightening machine comprises: an upper rigid support connected to the vertical uprights and stably fixed to the upper end of each upright, movable means for fixing the upper ones

Richtkassette am oberen Träger, die das Bewegen der oberen Richtkassette zulassen, Mittel zum translatorischen vertikalen Bewegen der oberen Richtkassette in Bezug auf den oberen starren Träger zwischen einer Ruheposition, in der die Walzen der oberen Richtkassette von den Walzen der unteren Richtkassette entfernt sind, und einer Richtposition, in der die Walzen der oberen Richtkassette an die Walzen der unteren Richtkassette herangeführt sind, um dem Band einen gewellten Weg vorzugeben, wobei die Mittel zum Bewegen geeignet sind, die Durchbiegung der oberen Richtkassette, die durch die durch den Durchgang des zu richtenden Bandes bedingte Trennkraft verursacht wird, auszugleichen.Straightening cassette on the upper support, which allow the movement of the upper straightening cassette, means for translationally moving the upper straightening cassette relative to the upper rigid support between a rest position in which the rolls of the upper straightening cassette are removed from the rolls of the lower straightening cassette, and a Directional position in which the rollers of the upper straightening cassette are brought to the rollers of the lower straightening cassette to give the band a wavy path, the means are suitable for moving, the deflection of the upper straightening cassette, by the through the passage of the straightened band conditional release force is caused to compensate.

US 3 156 288 A offenbart eine Richtmaschine mit einem Mittel zum Kippen von Arbeitswalzen in Längsrichtung (Förderrichtung durch die Richtmaschine) und/oder in Querrichtung, wobei die Arbeitswalzen zwei zusammenwirkende Keilelemente aufweisen, die relativ zueinander drehbar sind. Eine obere Walzanordnung umfasst Arbeitswalzen, die an einem Rahmen angeordnet und über Walzen in Haltern abgestützt sind. Der Abstand zwischen der oberen Walzanordnung und einer unteren Walzanordnung, die Arbeitswalzen und Stützwalzen umfasst, wird über ein Handrad eingestellt, das über Verbindungsstangen und Getriebe Schraubspindeln antreibt, um einen Querkopf, der die obere Walzanordnung trägt, anzuheben oder abzusenken. Die oberen Arbeitswalzen werden durch Einstellen der Stützwalzen durch Betätigen des Handrades eingestellt. US 3 156 288 A discloses a leveler with means for tilting work rolls longitudinally (conveying direction through the leveler) and / or in the transverse direction, the work rolls having two cooperating wedge elements which are rotatable relative to each other. An upper roll assembly includes work rolls disposed on a frame and supported by rollers in holders. The distance between the upper roll assembly and a lower roll assembly comprising work rolls and back-up rolls is adjusted via a handwheel which drives screw spindles via tie rods and gears to raise or lower a crosshead carrying the upper roll assembly. The upper work rolls are adjusted by adjusting the back-up rolls by operating the handwheel.

Eine Aufgabe der Erfindung ist es, die Beseitigung von Planheitsfehlern eines metallischen Flachproduktes, insbesondere eines Blechs oder eines Bands, zu flexibilisieren und zu vereinfachen und somit kostengünstiger zu ermöglichen.An object of the invention is to make the removal of flatness errors of a metallic flat product, in particular a sheet or a strip, more flexible and simpler and thus more cost-effective.

Diese Aufgabe wird durch die unabhängigen Patentansprüche gelöst. Vorteilhafte Ausgestaltungen sind insbesondere in den abhängigen Patentansprüchen angegeben.This object is solved by the independent claims. Advantageous embodiments are particularly in the dependent claims specified.

Eine erfindungsgemäße Anlage zum Beseitigen von Planheitsfehlern eines metallischen Flachproduktes, insbesondere eines Blechs oder eines Bands, umfasst mehrere auf gegenüberliegenden Seiten des Flachproduktes angeordnete Richtwalzen, wobei wenigstens zwei auf gegenüberliegenden Seiten des Flachproduktes angeordnete, zusammenwirkende Richtwalzen jeweils wenigstens drei axial benachbart zueinander angeordnete, einzeln anstellbare Teilwalzen aufweisen.A plant according to the invention for eliminating flatness defects of a metallic flat product, in particular a sheet or a strip, comprises a plurality of straightening rolls arranged on opposite sides of the flat product, wherein at least two cooperating straightening rolls arranged on opposite sides of the flat product each have at least three axially adjacently disposed, individually engageable Have partial rolls.

Durch die Teilung der Richtwalzen in einzeln anstellbare Teilwalzen ist es zum einen möglich, die Teilwalzen derart anzustellen, dass die jeweilige Richtwalze im Wesentlichen einer herkömmlichen, einteilig ausgebildeten Richtwalze entspricht. Hierdurch kann mit der erfindungsgemäßen Anlage ein kontinuierlicher Richtvorgang durchgeführt werden, mit dem, insbesondere einachsige, Planheitsfehler des Flachguts in Durchlaufrichtung korrigierbar sind. Alternativ kann durch eine gezielte Einzelanstellung der Teilwalzen mit der erfindungsgemäßen Anlage ein diskontinuierliches Biegepressen durchgeführt werden, bei dem die einzelnen Teilwalzen als Pressenköpfe einsetzbar sind, um mehrachsige Planheitsfehler des Flachproduktes korrigieren zu können. Weiter alternativ kann durch eine gezielte Einzelanstellung der Teilwalzen mit der erfindungsgemäßen Anlage ein, insbesondere kontinuierliches, kombiniertes Richten und Biegepressen während eines einzelnen Durchlaufs des Flachguts durch die Anlage durchgeführt werden. Hierbei können die Teilwalzen wie Pressenköpfe auch in Querrichtung wirken und durch eine überlagerte Anstellung gleichzeitig eine herkömmliche Richtfunktion übernehmen. Bei diesen drei verschiedenen Betriebsweisen der erfindungsgemäßen Anlage wirken die Teilwalzen unmittelbar auf das Flachprodukt ein. Durch eine gezielte Beeinflussung der Einzelanstellung jeder Teilwalze können sowohl die mit der jeweiligen Teilwalze erzeugbare Kraft, als auch eine Neigungsstellung der jeweiligen Teilwalze zur Längsmittelachse der jeweiligen Richtwalze eingestellt werden. Insbesondere kann die jeweilige Teilwalze wie ein Pressenwerkzeug einer Biegepresse angesteuert werden, um lokale, insbesondere mehrachsige, Planheitsfehler des Flachproduktes zu korrigieren.By dividing the straightening rollers into individually engageable partial rollers, it is possible, on the one hand, to make the partial rollers such that the respective straightening roller substantially corresponds to a conventional, one-piece straightening roller. As a result, a continuous straightening process can be carried out with the system according to the invention, with which, in particular uniaxial, flatness error of the slab can be corrected in the direction of passage. Alternatively, a discontinuous bending presses can be carried out by a targeted individual employment of the sub-rollers with the system according to the invention, in which the individual sub-rollers can be used as press heads to correct multi-axial flatness error of the flat product can. Further alternatively, by a targeted Einzelanstellung the sub-rollers with the system according to the invention, in particular continuous, combined straightening and bending presses are performed during a single pass of the slab through the system. Here, the sub-rollers as press heads can also act in the transverse direction and at the same time assume a conventional directional function by a superimposed employment. In these three different modes of operation of the system according to the invention, the sub-rollers act directly on the flat product. By selectively influencing the individual employment of each sub-roller both the force generated by the respective sub-roller force, as well as a tilt position of the respective sub-roller to the longitudinal center axis of the respective straightening roller can be adjusted. In particular, the respective sub-roller can be controlled like a press tool of a bending press in order to correct local, in particular multiaxial, flatness errors of the flat product.

Das Richten und das Biegepressen kann mittels einer einzigen erfindungsgemäßen Anlage durchgeführt werden. Herkömmlich sind hierzu zwei separate Anlagen erforderlich, nämlich eine zum Richten und eine zum Biegepressen. Folglich wird herkömmlich entweder in einem diskontinuierlichen Betrieb einer Biegepress-Anlage in mehreren Achsen biegegepresst oder in einem kontinuierlichen Betrieb einer Richtanlage einachsig gerichtet. Somit müssen herkömmlich zur Herstellung einer optimalen Planheit von Flachprodukten wenigstens zwei verschiedene Anlagentypen vorgehalten werden, die beide nicht immer vollständig ausgelastet sind. Dies führt zu hohen Investitionskosten für die beiden Anlagen und zu entsprechend hohen Betriebskosten. Demgegenüber muss gemäß der Erfindung lediglich eine einzige erfindungsgemäße Anlage vorgehalten werden, was mit einer deutlichen Reduzierung von Investitionskosten und Betriebskosten einhergeht.The straightening and the bending presses can be carried out by means of a single system according to the invention. Conventionally, this requires two separate systems, namely one for straightening and one for bending presses. Consequently, conventionally, either in a batch operation of a bending press machine in a plurality of axes is bent or uniaxially directed in a continuous operation of a straightening system. Thus, traditionally for the production of an optimal flatness of flat products at least two different types of plant must be maintained, both of which are not always fully utilized. This leads to high investment costs for the two systems and correspondingly high operating costs. In contrast, according to the invention, only a single system according to the invention must be maintained, which is accompanied by a significant reduction of investment costs and operating costs.

Da herkömmlich wenigstens zwei verschiedene Anlagen zum Beseitigen von Planheitsfehlern von Flachprodukten vorhanden sind, ist es erforderlich, ein Flachprodukt von der einen Anlage zu der anderen Anlage zu bewegen. Die damit verbundenen häufigen Handhabungsvorgänge zum Bewegen der Flachprodukte bergen die zusätzliche Gefahr, dass Planheitsfehler, beispielsweise Oberflächendefekte, auftreten, was bei der Erzeugung von Flachprodukten mit minderwertigerer Qualität einhergeht. Auch dies kann mit der Erfindung zuverlässig verhindert werden, da entsprechende Handhabungsvorgänge zum Bewegen der Flachprodukte zwischen verschiedenen Anlagen nicht erforderlich sind.Since there are conventionally at least two different systems for eliminating flatness flatness defects, it is necessary to move a flat product from one plant to the other plant. The associated frequent handling operations for moving the flat products entail the additional risk that flatness defects, such as surface defects, occur, which is associated with the production of inferior quality flat products. Again, this can be reliably prevented with the invention, since appropriate handling operations for moving the flat products between different systems are not required.

Die erfindungsgemäße Anlage kann auch drei oder mehrere Richtwalzen umfassen, die jeweils wenigstens drei axial benachbart zueinander angeordnete, einzeln anstellbare Teilwalzen aufweisen. Eine solche Richtwalze kann auch vier oder mehrere axial benachbart zueinander angeordnete, einzeln anstellbare Teilwalzen aufweisen.The system according to the invention may also comprise three or more straightening rollers each having at least three axially adjacently arranged, individually engageable part rollers. Such a straightening roller may also have four or more axially adjacent to each other, individually engageable part rollers.

Gemäß einer vorteilhaften Ausgestaltung sind die Teilwalzen jeder Richtwalze jeweils über wenigstens eine eigene Anstelleinheit aktiv anstellbar. Die Anstelleinheiten sind hierzu einzeln, insbesondere individuell, ansteuerbar ausgebildet. Mit einer solchen Anstelleinheit kann die jeweilige Teilwalze insbesondere auch geneigt zur Längsmittelachse der jeweiligen Richtwalze angestellt werden. Hierbei kann eine Kombination aus Kraft- und Positionsregelung eingesetzt werden. Die den Teilwalzen einer Richtwalze zugeordneten Anstelleinheiten können über eine gemeinsame Anstelleinheit gemeinsam angestellt werden, was insbesondere bezüglich des Ansteueraufwands für einen alleinigen Richtvorgang von Vorteil ist.According to an advantageous embodiment, the sub-rollers of each straightening roller can be actively adjusted in each case via at least one own adjusting unit. The hiring units are designed for this purpose individually, in particular individually, controllable. With such a positioning unit, the respective sub-roller can in particular also be inclined relative to the longitudinal central axis of the respective straightening roller. Here, a combination of force and position control can be used. The pitching rollers of a straightening roller associated with adjusting units can be made jointly via a common Anstelleinheit, which is particularly advantageous in terms of Ansteueraufwands for a single straightening process.

Vorteilhafterweise umfasst wenigstens eine Anstelleinheit wenigstens einen mechanischen, elektromechanischen, pneumatischen oder hydraulischen Aktor. Auch kann wenigstens eine Anstelleinheit eine Kombination von wenigstens zwei dieser Aktorvarianten aufweisen.Advantageously, at least one adjusting unit comprises at least one mechanical, electromechanical, pneumatic or hydraulic actuator. Also, at least one adjusting unit may comprise a combination of at least two of these actuator variants.

Nach einer weiteren vorteilhaften Ausgestaltung weisen wenigstens die den axial äußeren Teilwalzen einer der beiden Richtwalzen zugeordneten Anstelleinheiten jeweils wenigstens eine Schwenkeinheit auf, mit der die jeweilige Teilwalze passiv geneigt zur Längsachse dieser Richtwalze anstellbar ist. Hierdurch kann die Neigungsstellung der jeweiligen äußeren Teilwalze passiv an die mit der damit zusammenwirkenden, aktiv anstellbaren Teilwalze auf der gegenüberliegenden Seite des Flachproduktes eingestellten Biegelinie angepasst werden, ohne dass hierzu eine aktive Ansteuerung erforderlich ist. Hierdurch wird der Ansteueraufwand reduziert. Die Schwenkeinheit kann ein Schwenken der jeweiligen Teilwalze um eine in Durchlaufrichtung des Flachproduktes verlaufende Achse ermöglichen. Zusätzlich kann die Schwenkeinheit ein Schwenken der jeweiligen Teilwalze um eine quer zu der Durchlaufrichtung verlaufende Achse ermöglichen. Die Schwenkeinheit kann derart ausgebildet sein, dass bei einer Verschwenkung der jeweiligen Teilwalze von ihr eine Rückstellkraft erzeugt wird, mit der die Teilwalze in Richtung ihrer nicht verschwenkten Stellung mit Kraft beaufschlagbar ist. Mit der Schwenkeinheit können insbesondere ein Kantentragen und Oberflächenbeschädigungen des Flachproduktes durch den Kontakt zwischen dem Endabschnitt der Teilwalze und dem Flachprodukt zuverlässig vermieden werden.In accordance with a further advantageous embodiment, at least the adjusting units associated with the axially outer part rollers of one of the two straightening rollers each have at least one pivoting unit with which the respective part roller can be adjusted passively inclined to the longitudinal axis of this straightening roller. In this way, the inclination position of the respective outer part roller can be passively adapted to the bending line set with the cooperating, actively engageable part roller on the opposite side of the flat product, without the need for an active control. As a result, the driving effort is reduced. The swivel unit can pivot the respective sub-roller to allow a running in the direction of passage of the flat product axis. In addition, the pivot unit can enable pivoting of the respective sub-roller about an axis extending transversely to the direction of passage. The pivoting unit may be designed such that upon a pivoting of the respective sub-roller a restoring force is generated by it, with which the sub-roller can be acted upon with force in the direction of its non-pivoted position. In particular, an edge support and surface damage of the flat product by the contact between the end section of the sub-roller and the flat product can be reliably avoided with the pivoting unit.

Es ist des Weiteren von Vorteil, wenn wenigstens eine Anstelleinheit zumindest eine Keilhubeinheit aufweist. Hierdurch ist die der Anstelleinheit zugeordnete Teilwalze kontinuierlich und sehr exakt anstellbar. Die Keilhubeinheit umfasst zwei Keile mit gegenläufig zueinander angeordneten, aneinander vorbeiführbaren Keilflächen, durch deren Relativbewegungen die Anstellung der Teilwalze erfolgt.It is furthermore advantageous if at least one adjusting unit has at least one wedge-lifting unit. As a result, the sub-roller associated with the adjusting unit is continuously and very accurately adjustable. The wedge-lifting unit comprises two wedges with wedge surfaces arranged opposite one another, which can be guided past one another, by means of whose relative movements the employment of the sub-roller takes place.

Eine weitere vorteilhafte Ausgestaltung sieht vor, dass wenigstens eine Teilwalze an zumindest einem axialen Endabschnitt mit einer Außendurchmesserreduzierung versehen ist. Hierdurch können ein Kantentragen und Oberflächenbeschädigungen des Flachproduktes durch den Kontakt zwischen dem Endabschnitt der Teilwalze und dem Flachprodukt zuverlässig vermieden werden. Zudem wird die Biegefunktion der Teilwalze intensiviert. Die Außendurchmesserreduzierung kann beispielsweise durch ein tangentiales Anschleifen eines umlaufenden Radius an dem Endabschnitt der Teilwalze hergestellt werden.A further advantageous embodiment provides that at least one part roller is provided at least one axial end portion with an outer diameter reduction. As a result, an edge wear and surface damage of the flat product by the contact between the end portion of the sub-roller and the flat product can be reliably avoided. In addition, the bending function of the sub-roller is intensified. The outer diameter reduction can be made, for example, by tangentially grinding a circumferential radius at the end portion of the sub-roll.

Gemäß einer weiteren vorteilhaften Ausgestaltung sind die zusammenwirkenden, die Teilwalzen aufweisenden Richtwalzen bezüglich einer Durchlaufrichtung des Flachproduktes durch die Anlage versetzt oder nicht versetzt zueinander angeordnet. Die zusammenwirkenden, die Teilwalzen aufweisenden Richtwalzen können bezüglich der Durchlaufrichtung des Flachproduktes durch die Anlage zwischen herkömmlichen durchgehenden Richtwalzen angeordnet sein. Alternativ können die zusammenwirkenden, die Teilwalzen aufweisenden Richtwalzen bezüglich der Durchlaufrichtung des Flachproduktes durch die Anlage herkömmlichen Richtwalzen vor- oder nachgeschaltet sein. Sind die zusammenwirkenden, die Teilwalzen aufweisenden Richtwalzen bezüglich einer Durchlaufrichtung des Flachproduktes durch die Anlage nicht versetzt zueinander angeordnet, können über Antriebe dieser Richtwalzen zugdominierte Spannungszustände zu den herkömmlichen Richtwalzen der Anlage aufgebaut werden.According to a further advantageous embodiment, the cooperating, the partial rollers having straightening rollers are offset with respect to a direction of passage of the flat product through the system or not offset from each other. The co-operating, the partial rolls having straightening rollers may be arranged with respect to the direction of passage of the flat product through the system between conventional continuous straightening rollers. Alternatively, the cooperating, the partial rolls having straightening rollers with respect to the direction of passage of the flat product through the plant conventional straightening rollers upstream or downstream. If the cooperating straightening rollers having the partial rollers are not offset relative to one another with respect to a direction of passage of the flat product, tension-induced tension conditions can be established with the conventional straightening rollers of the system via drives of these straightening rollers.

Nach einer weiteren vorteilhaften Ausgestaltung umfasst die Anlage wenigstens eine signaltechnisch mit den Anstelleinheiten verbindbare Steuer- und/oder Regelelektronik, die eingerichtet ist, die Anstelleinheiten in Abhängigkeit der jeweiligen Qualität und Position der Planheitsfehler des Flachproduktes derart anzusteuern, dass mit der Anlage wahlweise ein Richten, ein Biegepressen oder ein kombiniertes Richten und Biegepressen durchführbar ist. Die jeweilige Qualität und Position der Planheitsfehler kann vorab ermittelt werden. Dies kann im Zuge einer automatisierten Messwerterfassung oder einer manuellen Messwerterfassung oder einfach durch ein erfahrenes Auge eines Bedienpersonals erfolgen. Es können auch Qualitätsinformationen aus einem Produktionsplanungs- und -steuerungssystem berücksichtigt werden. Die Steuer- und/oder Regelelektronik kann die jeweilige Betriebsweise der Anlage unter Berücksichtigung von Informationen bzw. Vorgaben sowie Bewertungskriterien über die jeweilige Fehlerart auswählen. Die Auswahl kann alternativ durch das Bedienpersonal erfolgen. Bei der Betriebsweise "Richten" sind die Teilwalzen einer Richtwalze gleichgeschaltet und agieren als durchgehende Richtwalze. Alternativ kann in der Betriebsweise "Richten" auf den Einsatz der Teilwalzen bzw. der entsprechend ausgestalteten Richtwalzen verzichtet werden. Durch die Betriebsweise "Richten" wird die Planheit des Flachproduktes lediglich in einachsiger Richtung, wie bei einer herkömmlichen Rollenrichtmaschine, verbessert. Bei der Betriebsweise "Biegepressen" erfolgt ein isolierter Betrieb der die Teilwalzen aufweisenden Richtwalzen entsprechend einer herkömmlichen Biegepresse. Es werden dabei lokale, mehrachsige Planheitsfehler des Flachguts korrigiert. Bei der Betriebsweise "kombiniertes Richten und Biegepressen" erfolgt ein mehrachsiges Richten in einem einzelnen Fertigungsschritt. Die die Teilwalzen aufweisenden Richtwalzen und die herkömmlichen Richtwalzen arbeiten dabei zeitgleich an der Beseitigung der Planheitsfehler des Flachproduktes. Wenn es die Qualität der lokalen Planheitsfehler des Flachguts erfordert, kann während eines ersten Durchlaufs des Flachproduktes durch die Anlage die Betriebsweise "Biegepressen" gewählt werden. Anschließend bzw. nach weitestgehender Beseitigung dieser lokalen Planheitsfehler kann während eines weiteren Durchlaufs des Flachproduktes durch die Anlage die Betriebsweise "Richten" oder "kombiniertes Richten und Biegepressen" gewählt werden. Für das Erreichen eines optimalen Planheitsergebnisses steht sowohl für die die Teilwalzen aufweisenden Richtwalzen, als auch für die durchgehenden Richtwalzen eine Anzahl an Anstelleinheiten zur Verfügung, die durch Sollwerte einer Regelung angesteuert werden können. Die Wahl der jeweiligen Betriebsweise der Anlage entscheidet, welche Anstelleinheiten angesteuert werden müssen. Die Verteilung einzelner ermittelter Planheitsfehler des Flachproduktes auf die einzelnen Anstelleinheiten kann unter Verwendung eines Richtmodells erfolgen.According to a further advantageous embodiment, the system comprises at least one signal technically connectable to the Anstelleinheiten control and / or control electronics, which is set up to control the Anstelleinheiten depending on the quality and position of the flatness of the flat product such that the plant optionally a straightening, a bending press or a combined straightening and bending presses is feasible. The respective quality and position of the flatness errors can be determined in advance. This can be done in the course of an automated data logging or a manual data logging or simply by an experienced eye of an operator. Quality information from a production planning and control system can also be considered. The control and / or regulating electronics can select the respective mode of operation of the system taking into account information or specifications as well as evaluation criteria on the respective type of error. The selection can alternatively be made by the operating personnel. In the "straightening" mode, the sub-rollers of a straightening roller are synchronized and act as a continuous straightening roller. Alternatively, in the operating mode "straightening", it is possible to dispense with the use of the partial rollers or the correspondingly designed straightening rollers. By the method of "straightening" the flatness of the flat product is only in uniaxial direction, as in a conventional roller straightening machine, improved. In the operation "bending presses" is an isolated operation of the part rolls having straightening rolls according to a conventional bending press. Local, multiaxial flatness errors of the slab are corrected. In the "combined straightening and bending presses" mode, multi-axis straightening takes place in a single production step. The straightening rollers having the partial rollers and the conventional straightening rollers work simultaneously to eliminate the flatness error of the flat product. If the quality of the local flatness defects of the slab requires it, the operation of "bending presses" can be selected during a first pass of the flat product through the plant. Subsequently, or after largely eliminating these local flatness errors, the operating mode "straightening" or "combined straightening and bending presses" can be selected during a further passage of the flat product through the system. For the achievement of an optimum flatness result, there is a number of pitching units available both for the straightening rollers having the partial rollers and for the continuous straightening rollers which can be controlled by reference values of a control. The choice of the respective mode of operation of the plant decides which hiring units have to be controlled. The distribution of individual determined flatness errors of the flat product on the individual adjusting units can be carried out using a straightening model.

Vorteilhafterweise umfasst die Anlage wenigstens eine signaltechnisch mit der Steuer- und/oder Regelelektronik verbindbare Erfassungseinrichtung zum Erfassen einer Qualität und Position der Planheitsfehler des mit der Anlage zu behandelnden oder des mit der Anlage behandelten Flachproduktes. Hierdurch kann eine subjektive Planheitsbewertung durch eine objektive Planheitsbewertung durch die Steuer- und/oder Regelelektronik ersetzt werden. Die einlaufseitige Erfassung der Qualität und Position der Planheitsfehler des mit der Anlage zu behandelnden Flachproduktes, die ebenfalls für die Wahl der jeweiligen Betriebsweise der Anlage erforderlich ist, dient einem Preset der Anlage (Feed-Forward-Regelung). Über die auslaufseitige Erfassung der Qualität und Position der Planheitsfehler des mit der Anlage behandelten Flachproduktes können eventuell erforderliche Folgerichtstiche mit einem modifizierten Setup versehen werden (Feed-Backward-Regelung).Advantageously, the system comprises at least one detectable device which can be connected to the control and / or regulating electronics in order to detect a quality and position of the flatness error of the flat product to be treated with the system or of the system treated with the system. As a result, a subjective flatness evaluation can be replaced by an objective flatness evaluation by the control and / or regulating electronics. The inlet-side detection of the quality and position of the flatness error of the flat product to be treated with the system, which is also required for the choice of the respective operating mode of the system, serves for a preset of the system (feed-forward control). About the outlet detection of quality and position the flatness error of the flat product treated with the system may be provided with a modified setup (feed backward control).

Nach einem erfindungsgemäßen Verfahren zum Beseitigen von Planheitsfehlern eines metallischen Flachproduktes, insbesondere eines Blechs oder eines Bands, unter Verwendung einer Richtanlage, wird mit der Richtanlage ein Biegepressen oder ein kombiniertes Richten und Biegepressen durchgeführt.According to a method according to the invention for eliminating flatness defects of a metallic flat product, in particular a sheet or a strip, using a straightening system, a bending press or a combined straightening and bending presses is performed with the straightening system.

Mit dem Verfahren sind die oben mit Bezug auf die Anlage genannten Vorteile entsprechend verbunden. Insbesondere kann als Richtanlage eine Anlage nach einer der vorgenannten Ausgestaltungen oder einer beliebigen Kombination derselben verwendet werden.With the method, the advantages mentioned above with respect to the system are connected accordingly. In particular, can be used as straightening a plant according to one of the aforementioned embodiments or any combination thereof.

Im Folgenden wird die Erfindung unter Bezugnahme auf die anliegenden Figuren anhand von bevorzugten Ausführungsformen beispielhaft erläutert.

Figur 1:
eine schematische Darstellung eines Ausführungsbeispiels für eine erfindungsgemäße Anlage in einem ersten Anlagenzustand;
Figur 2:
eine schematische Darstellung der in Figur 1 gezeigten Anlage in einem weiteren Anlagenzustand;
Figur 3:
eine schematische Darstellung eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Anlage;
Figur 4:
eine schematische Darstellung eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Anlage;
Figur 5:
eine schematische Darstellung eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Anlage;
Figur 6:
eine schematische Darstellung einer Teilwalze eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Anlage;
Figur 7:
eine schematische Darstellung eines Ausführungsbeispiels für ein erfindungsgemäßes Verfahren; und
Figur 8:
eine schematische Detaildarstellung eines Ausführungsbeispiels für ein Regelungskonzept für eine erfindungsgemäße Anlage.
In the following the invention will be explained by way of example with reference to the attached figures by means of preferred embodiments.
FIG. 1:
a schematic representation of an embodiment of an inventive system in a first state of the system;
FIG. 2:
a schematic representation of in FIG. 1 shown installation in another state of the system;
FIG. 3:
a schematic representation of another embodiment of an inventive system;
FIG. 4:
a schematic representation of another embodiment of an inventive system;
FIG. 5:
a schematic representation of another embodiment of an inventive system;
FIG. 6:
a schematic representation of a sub-roll of another embodiment of an inventive system;
FIG. 7:
a schematic representation of an embodiment of a method according to the invention; and
FIG. 8:
a schematic detail of an embodiment of a control concept for a system according to the invention.

In den Figuren sind gleiche bzw. funktionsgleiche Bauteile mit denselben Bezugszeichen versehen.In the figures, identical or functionally identical components are provided with the same reference numerals.

Figuren 1 und 2 zeigen schematisch mögliche konvexe bzw. konkave Richtspaltgeometrien zum Beseitigen von Planheitsfehlern eines unplanen, metallischen Flachproduktes 2, insbesondere eines Bleches oder eines Bandes. Figures 1 and 2 schematically show possible convex or concave Richtspaltgeometrien to eliminate flatness errors of an unplanned, metallic flat product 2, in particular a sheet or a strip.

Die Anlage 1 umfasst mehrere auf gegenüberliegenden Seiten des Flachproduktes 2 angeordnete Richtwalzen 3 und 4, von denen in Figur 1 nur zwei gezeigt sind. Die gezeigten, zusammenwirkenden Richtwalzen 3 und 4 weisen jeweils drei axial benachbart zueinander angeordnete, einzeln anstellbare Teilwalzen 5 bzw. 6 auf. Die Teilwalzen 5 bzw. 6 jeder Richtwalze 3 bzw. 4 sind jeweils über wenigstens eine eigene Anstelleinheit 7 entsprechend den Doppelpfeilen 8 aktiv anstellbar. In Figur 1 sind lediglich die Anstelleinheiten 7 zum Anstellen der Teilwalzen 6 gezeigt. Wenigstens eine Anstelleinheit 7 kann zumindest einen mechanischen, elektromechanischen, pneumatischen oder hydraulischen, nicht gezeigten Aktor aufweisen. Die Teilwalzen 6 sind als Volllinie in einem Zustand gezeigt, in dem die Aktoren nicht wirken. Wenigstens eine Teilwalze 5 bzw. 6 kann an zumindest einem axialen Endabschnitt mit einer nicht gezeigten Außendurchmesserreduzierung versehen sein. Die zusammenwirkenden, die Teilwalzen 5 bzw. 6 aufweisenden Richtwalzen 3 bzw. 4 können bezüglich einer Durchlaufrichtung x des Flachproduktes 2 durch die Anlage 1 versetzt oder nicht versetzt zueinander angeordnet sein.The plant 1 comprises a plurality of straightening rollers 3 and 4 arranged on opposite sides of the flat product 2, of which in FIG. 1 only two are shown. The cooperating straightening rollers 3 and 4 shown each have three axially adjacently arranged, individually engageable part rollers 5 and 6, respectively. The sub-rollers 5 and 6 of each straightening roller 3 and 4 are each active on at least one own Anstelleinheit 7 corresponding to the double arrows 8. In FIG. 1 Only the Anstelleinheiten 7 for hiring the sub-rollers 6 are shown. At least one adjusting unit 7 may have at least one mechanical, electromechanical, pneumatic or hydraulic actuator, not shown. The sub-rollers 6 are shown as a solid line in a state in which the actuators do not work. At least one sub-roller 5 or 6 may be provided on at least one axial end portion with an outer diameter reduction, not shown. The cooperating, the sub-rollers 5 and 6 having straightening rollers 3 and 4 may be with respect to a passage direction x of the flat product 2 offset by the system 1 or not offset from each other.

Die den axial äußeren Teilwalzen 6 der Richtwalze 4 zugeordneten Anstelleinheiten 7 weisen jeweils eine Schwenkeinheit 9 auf, mit der die jeweilige Teilwalze 6, wie in Figur 1 gezeigt, passiv geneigt zur Längsmittelachse 10 der Richtwalze 4 anstellbar ist. Jede Schwenkeinheit 7 umfasst eine Wippe 11, die um eine parallel zur Durchlaufrichtung x des Flachproduktes 2 durch die Anlage 1 ausgerichtete Achse 12 schwenkbar gelagert ist. Des Weiteren umfasst jede Schwenkeinheit 7 zwei Druckfedern 13, die bei Verschwenkung der Wippe 11 aus der gezeigten Stellung jeweils eine Rückstellkraft erzeugen, mit der die Wippe 11 in Richtung der gezeigten Stellung mit Kraft beaufschlagt wird.The adjusting units 7 assigned to the axially outer part rollers 6 of the straightening roller 4 each have a pivoting unit 9 with which the respective part rollers 6, as in FIG FIG. 1 shown, passively inclined to the longitudinal central axis 10 of the straightening roller 4 is adjustable. Each pivoting unit 7 comprises a rocker 11 which is pivotally mounted about an axis 12 aligned parallel to the passage direction x of the flat product 2 through the system 1. Furthermore, each pivoting unit 7 comprises two compression springs 13, which each generate a restoring force upon pivoting of the rocker 11 from the position shown, with which the rocker 11 is acted upon in the direction of the position shown with force.

Die den axial äußeren Teilwalzen 6 zugeordneten Anstelleinheiten 7 weisen jeweils eine Keilhubeinheit 14 mit zwei Keilen 15 und 16 auf, durch deren Relativstellung die jeweilige Anstellung der jeweiligen Teilwalze 6 definiert ist. Die Anstelleinheiten 7 sind über eine gemeinsame Anstelleinheit 17 gemeinsam anstellbar, die ein durch die Keile 18 und 19 gebildetes Keilhubsystem aufweist.The adjusting units 7 assigned to the axially outer sub-rollers 6 each have a wedge-lifting unit 14 with two wedges 15 and 16, by the relative position of which the respective setting of the respective sub-roller 6 is defined. The adjusting units 7 are jointly employable via a common adjusting unit 17, which has a wedge-lifting system formed by the wedges 18 and 19.

Die Anlage 1 umfasst eine signaltechnisch mit den Anstelleinheiten 7 verbindbare, nicht gezeigte Steuer- und/oder Regelelektronik, die eingerichtet ist, die Anstelleinheiten 7 in Abhängigkeit der jeweiligen Qualität und Position der Planheitsfehler des metallischen Flachproduktes 2 derart anzusteuern, dass mit der Anlage 1 wahlweise ein Richten, ein Biegepressen oder ein kombiniertes Richten und Biegepressen durchführbar ist.The system 1 comprises a signaling technology with the Anstelleinheiten 7 connectable, not shown control and / or control electronics, which is adapted to control the Anstelleinheiten 7 depending on the respective quality and position of the flatness error of the metallic flat product 2 such that with the system 1 optional a straightening, a bending presses or a combined straightening and bending presses is feasible.

Die Anlage 1 kann des Weiteren wenigstens eine signaltechnisch mit der Steuer- und/oder Regelelektronik verbindbare, nicht gezeigte Erfassungseinrichtung zum Erfassen einer Qualität und Position der Planheitsfehler des mit der Anlage 1 zu behandelnden oder des mit der Anlage 1 behandelten metallischen Flachproduktes 2 aufweisen.The system 1 can furthermore have at least one detection device (not shown) connectable to the control and / or regulating electronics for detecting a quality and position of the flatness error of the metallic flat product 2 to be treated with the system 1 or treated with the system 1.

Figuren 3 bis 5 zeigen mögliche Einbindungen der geteilten Richtwalzen (Biegepressfunktion) in bzw. an einer konventionellen Rollenrichtmaschine (Richtfunktion). Die Anlage 1 umfasst mehrere auf gegenüberliegenden Seiten des Flachproduktes angeordnete Richtwalzen 3, 4 und 20. FIGS. 3 to 5 show possible integrations of the split straightening rolls (bending press function) in or on a conventional roll straightening machine (Directional function). The plant 1 comprises a plurality of straightening rolls 3, 4 and 20 arranged on opposite sides of the flat product.

Zwei auf gegenüberliegenden Seiten des metallischen Flachproduktes angeordnete, zusammenwirkende Richtwalzen 3 und 4 weisen jeweils wenigstens drei axial benachbart zueinander angeordnete, einzeln anstellbare, nicht gezeigte Teilwalzen auf. Die Teilwalzen jeder Richtwalze 3 und 4 sind jeweils über wenigstens eine nicht gezeigte eigene Anstelleinheit aktiv anstellbar. Wenigstens eine Anstelleinheit umfasst zumindest einen mechanischen, elektromechanischen, pneumatischen oder hydraulischen Aktor. Wenigstens die den axial äußeren Teilwalzen einer der beiden Richtwalzen 3 bzw. 4 zugeordneten Anstelleinheiten können jeweils wenigstens eine nicht gezeigte Schwenkeinheit aufweisen, mit der die jeweilige Teilwalze passiv geneigt zur Längsmittelachse 10 dieser Richtwalze 3 bzw. 4 anstellbar ist. Wenigstens eine Anstelleinheit kann zumindest eine nicht gezeigte Keilhubeinheit aufweisen. Wenigstens eine Teilwalze kann an zumindest einem axialen Endabschnitt mit einer nicht gezeigten Außendurchmesserreduzierung versehen sein. Diese Komponenten der Anlage 1 können beispielsweise entsprechend den Figuren 1 und 2 ausgebildet sein, weshalb hier auf die obige Beschreibung zu den Figuren 1 und 2 verwiesen wird.Two arranged on opposite sides of the metallic flat product, co-operating straightening rollers 3 and 4 each have at least three axially adjacent to each other, individually engageable, not shown sub-rollers. The sub-rollers of each straightening roller 3 and 4 are each active on at least one not shown own Anstelleinheit. At least one adjusting unit comprises at least one mechanical, electromechanical, pneumatic or hydraulic actuator. At least the adjusting units associated with the axially outer part rollers of one of the two straightening rollers 3 and 4 can each have at least one pivot unit, not shown, with which the respective part roller is passively inclined to the longitudinal center axis 10 of this straightening roller 3 and 4, respectively. At least one adjusting unit may have at least one wedge lifting unit, not shown. At least one sub-roller may be provided on at least one axial end portion with an outer diameter reduction, not shown. These components of Appendix 1, for example, according to the Figures 1 and 2 be trained, so here on the above description to the Figures 1 and 2 is referenced.

Die zusammenwirkenden, die Teilwalzen aufweisenden Richtwalzen 3 und 4 sind bezüglich einer Durchlaufrichtung x des Flachproduktes durch die Anlage 1 versetzt zueinander angeordnet. Auch die übrigen Richtwalzen 20 sind entsprechend versetzt zueinander und zu den Richtwalzen 3 und 4 angeordnet.The cooperating, the partial rolls having straightening rolls 3 and 4 are offset with respect to a passage direction x of the flat product through the system 1 to each other. The other straightening rollers 20 are correspondingly offset from each other and arranged to the straightening rollers 3 and 4.

Die Anlage 1 umfasst eine signaltechnisch mit den Anstelleinheiten verbindbare, nicht gezeigte Steuer- und/oder Regelelektronik, die eingerichtet ist, die Anstelleinheiten in Abhängigkeit der jeweiligen Qualität und Position der Planheitsfehler des metallischen Flachproduktes derart anzusteuern, dass mit der Anlage 1 wahlweise ein Richten, ein Biegepressen oder ein kombiniertes Richten und Biegepressen durchführbar ist.The system 1 includes a signal technically connectable to the Anstelleinheiten, not shown control and / or control electronics, which is set up to control the Anstelleinheiten depending on the respective quality and position of the flatness error of the metallic flat product such that with the Appendix 1 optionally straightening, a bending press or a combined straightening and bending presses is feasible.

Die Anlage 1 kann des Weiteren wenigstens eine signaltechnisch mit der Steuer- und/oder Regelelektronik verbindbare, nicht gezeigte Erfassungseinrichtung zum Erfassen einer Qualität und Position der Planheitsfehler des mit der Anlage 1 zu behandelnden oder des mit der Anlage 1 behandelten metallischen Flachproduktes aufweisen.The system 1 may further include at least one signal technically connectable to the control and / or regulating electronics, not shown detecting means for detecting a quality and position of the flatness of the treated with the system 1 or treated with the system 1 metallic flat product.

Figur 4 zeigt eine schematische Darstellung eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Anlage 1 zum Beseitigen von Planheitsfehlern eines nicht gezeigten metallischen Flachproduktes, insbesondere eines Blechs oder eines Bands. Diese Anlage 1 unterscheidet sich dadurch von dem in Figur 3 gezeigten Ausführungsbeispiel, dass vier Richtwalzen 3 und 4 vorhanden sind, die jeweils wenigstens drei axial benachbart zueinander angeordnete, einzeln anstellbare, nicht gezeigte Teilwalzen aufweisen, und dass diese Richtwalzen 3 und 4 einer durch die Richtwalzen 20 gebildeten herkömmlichen Rollenrichteinheit bezüglich der Durchlaufrichtung x des metallischen Flachproduktes durch die Anlage 1 vor- oder nachgeschaltet sind. Im Übrigen entspricht die Anlage 1 dem in Figur 3 gezeigten Ausführungsbeispiel, weshalb hier zur Vermeidung von Wiederholungen auf die obige Beschreibung von Figur 3 verwiesen wird. FIG. 4 shows a schematic representation of another embodiment of an inventive system 1 for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt. This Appendix 1 differs from the in FIG. 3 shown embodiment, that four straightening rollers 3 and 4 are present, each having at least three axially adjacent to each other, individually engageable, not shown sub-rollers, and that these straightening rollers 3 and 4 formed by the straightening rollers 20 conventional roller straightening unit with respect to the passage direction x of the metallic Flat product through the system 1 upstream or downstream. Incidentally, the Appendix 1 corresponds to the in FIG. 3 shown embodiment, which is why here to avoid repetition of the above description of FIG. 3 is referenced.

Figur 5 zeigt eine schematische Darstellung eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Anlage 1 zum Beseitigen von Planheitsfehlern eines nicht gezeigten metallischen Flachproduktes, insbesondere eines Blechs oder eines Bands. Diese Anlage 1 unterscheidet sich dadurch von dem in Figur 4 gezeigten Ausführungsbeispiel, dass lediglich zwei zusammenwirkende Richtwalzen 3 und 4 vorhanden sind, die jeweils wenigstens drei axial benachbart zueinander angeordnete, einzeln anstellbare, nicht gezeigte Teilwalzen aufweisen und bezüglich der Durchlaufrichtung x des metallischen Flachproduktes durch die Anlage 1 den Richtwalzen 20 vor- bzw. nachgeschaltet sind, und dass die Richtwalzen 3 und 4 bezüglich der Durchlaufrichtung x des metallischen Flachproduktes durch die Anlage 1 nicht versetzt zueinander angeordnet sind. Im Übrigen entspricht die Anlage 1 dem in Figur 3 gezeigten Ausführungsbeispiel, weshalb hier zur Vermeidung von Wiederholungen auf die obige Beschreibung von Figur 3 verwiesen wird. FIG. 5 shows a schematic representation of another embodiment of an inventive system 1 for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt. This Appendix 1 differs from the in FIG. 4 shown embodiment, that only two cooperating straightening rollers 3 and 4 are present, each having at least three axially adjacent to each other, individually engageable, not shown sub-rollers and with respect to the direction of passage x of the metallic flat product through the system 1 the straightening rollers 20 upstream or downstream are, and that the straightening rollers 3 and 4 with respect to the passage direction x of the metallic flat product through the system 1 are not offset from one another. in the Otherwise, Annex 1 corresponds to the one in FIG. 3 shown embodiment, which is why here to avoid repetition of the above description of FIG. 3 is referenced.

Figur 6 zeigt eine schematische Darstellung einer Teilwalze 5 bzw. 6 eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Anlage zum Beseitigen von Planheitsfehlern eines nicht gezeigten metallischen Flachproduktes, insbesondere eines Blechs oder eines Bands. Die Teilwalze 5 bzw. 6 kann bei einer der in den Figuren 1 bis 5 gezeigten Anlagen eingesetzt werden. Die Teilwalze 5 bzw. 6 ist an beiden axialen Endabschnitten jeweils mit einer Außendurchmesserreduzierung 21 in Form eines Radius versehen zur Minimierung von Blechoberflächenfehlern durch Kantentragen. FIG. 6 shows a schematic representation of a part roller 5 and 6 of a further embodiment of an inventive system for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt. The sub-roller 5 and 6 can in one of the FIGS. 1 to 5 used plants are used. The sub-roller 5 or 6 is provided at both axial end portions each with an outer diameter reduction 21 in the form of a radius for minimizing sheet metal surface defects by edge support.

Figur 7 zeigt eine schematische Darstellung eines Ausführungsbeispiels für ein erfindungsgemäßes Verfahren zum Beseitigen von Planheitsfehlern eines nicht gezeigten metallischen Flachproduktes, insbesondere eines Blechs oder eines Bands, unter Verwendung einer nicht gezeigten Richtanlage, mit der wahlweise ein Richten, ein Biegepressen oder ein kombiniertes Richten und Biegepressen durchgeführt werden kann. Die Richtanlage kann gemäß einem der in den Figuren 1 bis 6 gezeigten Ausführungsbeispiele ausgebildet sein. FIG. 7 shows a schematic representation of an embodiment of an inventive method for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt, using a straightening unit, not shown, with the optional straightening, a bending presses or a combined straightening and bending presses are performed can. The straightening system can according to one of the in the FIGS. 1 to 6 be shown embodiments.

In Schritt 100 werden Daten zur Planheit des mit der Richtanlage zu behandelnden metallischen Flachproduktes erfasst. In Schritt 200 wird ermittelt, ob zur Beseitigung von Planheitsfehlern des metallischen Flachproduktes ein Biegepressen erforderlich ist. Hierbei werden Informationen 300 in Form von Vorgaben bzw. Bewertungskriterien von Planheitsfehlern berücksichtigt, insbesondere ob es sich um Randwellen, Mittenwellen, Schüsseln oder dergleichen handelt. Diese Informationen 300 können aus Tabellen, Prozessmodellen oder einer visuellen Erfassung durch ein Bedienpersonal stammen. Ergibt sich in Schritt 200, dass kein Biegepressen (-) erforderlich ist, wird in Schritt 400 die Betriebsweise "Richten" eingeleitet, in der ein einachsiges Richten des metallischen Flachproduktes mittels der Richtanlage erfolgt. Hierbei können Teilwalzen aufweisende Richtwalzen als durchgehende Richtwalzen betrieben oder nicht an dem Richtprozess beteiligt werden. Ergibt sich in Schritt 200, dass ein Biegepressen (+) erforderlich ist, wird in Schritt 500 der erforderliche Verformungsaufwand berechnet. Anschließend wird in Schritt 600 ermittelt, ob die Qualität der Planheitsfehler derart ist, dass die Planheitsfehler in einem einzigen Durchlauf des metallischen Flachproduktes durch die Richtanlage korrigierbar sind oder nicht. Ergibt sich in Schritt 600, dass die Planheitsfehler in einem einzigen Durchlauf des metallischen Flachproduktes durch die Richtanlage (+) korrigierbar sind, wird in Schritt 700 die Betriebsweise "kombiniertes Richten und Biegepressen" eingeleitet. Hierbei werden die die Teilwalzen aufweisenden Richtwalzen zum Korrigieren von mehrachsigen Planheitsfehlern, beispielsweise Schüsseln, und die durchgängigen Richtwalzen ohne Teilwalzen zum Korrigieren von Wellen verwendet. Die die Teilwalzen aufweisenden Richtwalzen können überlagert angesteuert werden und hierdurch gleichzeitig zum Korrigieren von Wellen verwendet werden. Ergibt sich in Schritt 600, dass die Planheitsfehler nicht in einem einzigen Durchlauf des metallischen Flachproduktes durch die Richtanlage (-) korrigierbar sind, wird in Schritt 800 die Betriebsweise "Biegepressen" eingeleitet. Hierbei werden mittels der die Teilwalzen aufweisenden Richtwalzen mehrachsige Planheitsfehler korrigiert. Anschließend wird in Schritt 900 ermittelt, ob eine weitere Behandlung des metallischen Flachproduktes zur Beseitigung von Planheitsfehlern erforderlich ist. Ist dies der Fall, wird zu Schritt 100 übergegangen.In step 100, data on the flatness of the metallic flat product to be treated with the straightening system are recorded. In step 200 it is determined whether a bending press is required to eliminate flatness defects of the metallic flat product. In this case, information 300 in the form of specifications or evaluation criteria of flatness errors is taken into account, in particular whether they are edge waves, center waves, bowls or the like. This information 300 may come from tables, process models, or visual capture by an operator. If it is determined in step 200 that no bending press (-) is required, in step 400 the operating mode "straightening" is initiated, in which a single-axis Aligning the metallic flat product by means of the straightening system takes place. Here, part rolls having straightening rollers operated as a continuous straightening rollers or not involved in the straightening process. If, in step 200, a bending press (+) is required, then in step 500 the required amount of deformation is calculated. Subsequently, it is determined in step 600 whether the quality of the flatness error is such that the flatness errors can be corrected in a single pass of the metallic flat product by the straightening system or not. If, in step 600, the flatness errors can be corrected in a single pass of the metallic flat product by the straightening system (+), the method "combined straightening and bending presses" is initiated in step 700. Here, the straightening rollers having the part rollers for correcting multi-axial flatness errors, for example, bowls, and the continuous straightening rollers without partial rollers for correcting waves are used. The straightening rollers having the partial rollers can be controlled superimposed and thereby simultaneously used for correcting waves. If, in step 600, the flatness errors can not be corrected by the straightening system (-) in a single pass of the metallic flat product, the "bending presses" operating mode is initiated in step 800. In this case, multiaxial flatness errors are corrected by means of the straightening rollers having the partial rollers. Subsequently, in step 900, it is determined whether further treatment of the metallic flat product to eliminate flatness defects is required. If so, move to step 100.

Figur 8 zeigt eine schematische Detaildarstellung eines Ausführungsbeispiels für ein Regelungskonzept für eine erfindungsgemäße Anlage zum Beseitigen von Planheitsfehlern eines nicht gezeigten metallischen Flachproduktes, insbesondere eines Blechs oder eines Bands, bei gegebener Betriebsweise der Anlage. FIG. 8 shows a schematic detail of an embodiment of a control concept for a system according to the invention for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt, given operation of the system.

In Schritt 110 erfolgt eine einlaufseitige Erfassung von Planheitsfehlern des metallischen Flachproduktes. Dem Schritt 110 können Daten 210 aus einem Warmwalzwerk, einer visuellen Prüfung oder Messungen der Planheit des metallischen Flachproduktes zugeführt werden. In Schritt 310 werden Planheitsdaten erzeugt. Die Planheitsdaten werden in Schritt 410 einer Planheitsfehleranalyse unterzogen. Hierbei werden die Position des jeweiligen Planheitsfehlers in Breitenrichtung und Längenrichtung des metallischen Flachproduktes sowie die Tiefe des jeweiligen Planheitsfehlers ermittelt. Die Daten aus Schritt 410, oder wahlweise, im Rahmen einer Feed-Forward-Regelung, die Daten aus Schritt 310, werden einer Anlagensteuerung- und/oder -regelung 510 zugeführt, um ein Anlagensetup festzulegen. Die Anlagensteuerung- und/oder - regelung 510 erzeugt daraufhin Steuersignale 610 zur Ansteuerung der Anstelleinheiten der Richtwalzen 3, 4 oder 20 der Anlage.In step 110, an inlet-side detection of flatness errors of the metallic flat product takes place. The step 110 may include data 210 from a Hot rolling mill, a visual inspection or measurements of the flatness of the metallic flat product to be supplied. Planarity data is generated in step 310. The flatness data is subjected to a flatness error analysis in step 410. Here, the position of the respective flatness error in the width direction and length direction of the metallic flat product and the depth of the respective flatness error are determined. The data from step 410, or optionally, feed-forward control, the data from step 310, is provided to a plant controller and / or controller 510 to set a plant setup. The plant control and / or - regulation 510 then generates control signals 610 for controlling the adjusting units of the straightening rollers 3, 4 or 20 of the system.

In Schritt 710 kann eine auslaufseitige Erfassung von Planheitsfehlern des metallischen Flachproduktes erfolgen. Die daraus folgenden Messwerte 810 werden in Schritt 910 einer Planheitsfehleranalyse unterzogen. Hierbei werden die Position des jeweiligen Planheitsfehlers in Breitenrichtung und Längenrichtung des metallischen Flachproduktes sowie die Tiefe des jeweiligen Planheitsfehlers ermittelt. In Schritt 920 wird wenigstens ein Korrekturwert ermittelt, welcher der Anlagensteuerung- und/oder -regelung 510 zugeführt wird.In step 710, an outflow-side detection of flatness errors of the metallic flat product can take place. The resulting measurements 810 are subjected to a flatness error analysis in step 910. Here, the position of the respective flatness error in the width direction and length direction of the metallic flat product and the depth of the respective flatness error are determined. In step 920, at least one correction value is determined, which is supplied to the plant control and / or regulation 510.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Anlageinvestment
22
Flachproduktflat product
33
Richtwalzestraightening roll
44
Richtwalzestraightening roll
55
Teilwalzepartial roll
66
Teilwalzepartial roll
77
Anstelleinheitadjusting unit
88th
Anstellrichtungsetting direction
99
Schwenkeinheitswivel unit
1010
LängsmittelachseLongitudinal central axis
1111
Wippeseesaw
1212
Achseaxis
1313
Druckfedercompression spring
1414
KeilhubeinheitWedge lifting unit
1515
Keilwedge
1616
Keilwedge
1717
gemeinsame Anstelleinheitcommon hiring unit
1818
Keilwedge
1919
Keilwedge
2020
Richtwalzestraightening roll
2121
AußendurchmesserreduzierungOutside diameter reduction
100100
Schrittstep
110110
Schrittstep
200200
Schrittstep
210210
Datendates
300300
Informationeninformation
310310
Schrittstep
400400
Schrittstep
410410
Schrittstep
500500
Schrittstep
510510
Anlagensteuerung- und/oder -regelungPlant control and / or regulation
600600
Schrittstep
610610
Steuersignalecontrol signals
700700
Schrittstep
710710
Schrittstep
800800
Schrittstep
810810
Messwertereadings
900900
Schrittstep
910910
Schrittstep
920920
Schrittstep
xx
DurchlaufrichtungThroughput direction

Claims (10)

  1. Installation (1) for eliminating planarity faults of a metallic flat product (2), particularly a metal sheet or a strip, comprising a plurality of straightening rollers (3, 4, 20) arranged on opposite sides of the flat product (2), characterised in that at least two cooperating straightening rollers (3, 4) arranged on opposite sides of the flat product (2) each have at least three individually adjustable part rollers (5, 6) arranged axially adjacent to one another.
  2. Installation (1) according to claim 1, characterised in that the part rollers (5, 6) of each straightening roller (3, 4) are respectively actively adjustable by way of at least one individual adjusting unit (7).
  3. Installation (1) according to claim 2, characterised in that at least one adjusting unit (7) comprises at least one mechanical, electromechanical, pneumatic or hydraulic actuator.
  4. Installation (1) according to claim 2 or 3, characterised in that at least the adjusting units (7) associated with the axially outer part rollers (5, 6) of one of the two straightening rollers (3, 4) each comprise at least one pivot unit (9) by which the respective part roller (5, 6) is passively adjustable to be inclined relative to the longitudinal centre axis (10) of this straightening roller (3, 4).
  5. Installation (1) according to any one of claims 2 to 4, characterised in that at least one adjusting unit (7) comprises at least wedge lifting unit (14).
  6. Installation (1) according to any one of claims 1 to 5, characterised in that at least one part roller (5, 6) is provided at at least one axial end section with an outer diameter reduction (21).
  7. Installation (1) according to any one of claims 1 to 6, characterised in that the cooperating straightening rollers (3, 4) comprising the part rollers (5, 6) are arranged to be offset or not offset relative to one another with respect to a transit direction (x) of the flat product (2) through the installation (1).
  8. Installation (1) according to any one of claims 1 to 7, characterised by at least one electronic control and/or regulating system which is connectible in terms of signalling with the adjusting units (7) and which is arranged to so control the adjusting units (7) in dependence on the respective quality and position of the planarity faults of the flat product (2) that straightening, bending-pressing or combined straightening and bending-pressing can be selectably carried out by the installation (1).
  9. Installation (1) according to claim 8, characterised by at least one detecting device, which is connectible with the electronic control and/or regulating system in terms of signalling, for detecting a quality and position of the planarity errors of the flat product (2) which is to be treated by the installation (1) or which is treated by the installation (1).
  10. Method for eliminating planarity faults of a metallic flat product (2), particularly a metal sheet or a strip, with use of a straightening installation (1), characterised in that bending-pressing or combined straightening and bending-pressing is performed by the straightening installation (1).
EP16741297.2A 2015-07-22 2016-07-19 System and method for removing flatness faults from a metal flat product Active EP3325186B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015213788.0A DE102015213788A1 (en) 2015-07-22 2015-07-22 Plant and method for eliminating flatness defects of a metallic flat product
PCT/EP2016/067142 WO2017013099A1 (en) 2015-07-22 2016-07-19 System and method for removing flatness faults from a metal flat product

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EP3325186A1 EP3325186A1 (en) 2018-05-30
EP3325186B1 true EP3325186B1 (en) 2019-04-17

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EP (1) EP3325186B1 (en)
JP (1) JP6694502B2 (en)
KR (1) KR102094764B1 (en)
CN (1) CN107921501B (en)
DE (1) DE102015213788A1 (en)
RU (1) RU2703743C2 (en)
WO (1) WO2017013099A1 (en)

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CN113500113B (en) * 2021-07-29 2022-12-27 山东龙口三元铝材有限公司 Aluminum coiled material cutting and winding integrated machine

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Publication number Publication date
CN107921501B (en) 2020-10-20
KR20180048562A (en) 2018-05-10
RU2017142734A (en) 2019-08-22
WO2017013099A1 (en) 2017-01-26
KR102094764B1 (en) 2020-03-31
US11179759B2 (en) 2021-11-23
US20180185897A1 (en) 2018-07-05
EP3325186A1 (en) 2018-05-30
RU2017142734A3 (en) 2019-08-22
CN107921501A (en) 2018-04-17
JP2018527188A (en) 2018-09-20
RU2703743C2 (en) 2019-10-22
DE102015213788A1 (en) 2017-01-26
JP6694502B2 (en) 2020-05-13

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