EP1107835B1 - Rolling stand with crossing back-up and/or working rolls - Google Patents

Rolling stand with crossing back-up and/or working rolls Download PDF

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Publication number
EP1107835B1
EP1107835B1 EP99919049A EP99919049A EP1107835B1 EP 1107835 B1 EP1107835 B1 EP 1107835B1 EP 99919049 A EP99919049 A EP 99919049A EP 99919049 A EP99919049 A EP 99919049A EP 1107835 B1 EP1107835 B1 EP 1107835B1
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EP
European Patent Office
Prior art keywords
stand
cassette
rolls
rolling
roll
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99919049A
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German (de)
French (fr)
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EP1107835A1 (en
Inventor
Herbert Quambusch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
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SMS Demag AG
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Publication date
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Publication of EP1107835A1 publication Critical patent/EP1107835A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B21B31/185—Adjusting or positioning rolls by moving rolls axially and by crossing rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/025—Quarto, four-high stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/06—Cassettes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting

Definitions

  • the invention relates to a roll stand with support and / or work rolls for rolling of sheets and strips in which the upper and lower work rolls may together with the support rollers assigned to them by pairs in opposite directions horizontal displacement of each roller stored within the stand window Chocks can be moved into positions from the common vertical plane are in which by the roll axes of the work and backup rolls crossing vertical planes.
  • European patent application 0 525 552 A1 suggests the chocks of the work and backup rolls common sliding blocks before, which are arranged between the chocks and the roll stand and have on their sides facing away from the chocks wedge surfaces which with vertically adjustable slide drives with the same wedge surfaces correspond. When adjusting these sliding drives, the on wedge surfaces sliding on each other a horizontal displacement of the Sliding blocks, which adjust the side chocks and the rollers are crossed in pairs.
  • actuators have become known from the same document, such as Hydraulic cylinders or spindles acting mechanically on the chocks, with which each have the chocks for changing the roller positions within the Stand window can be moved horizontally.
  • the object of the present invention is to provide a roll stand simple sliding drives and high system stability to create that with simple constructive means an entanglement of the rollers with conventional Storage allows.
  • the invention is also applicable when a so-called duo rolling mill with only two Work rolls is used.
  • the invention provides that each work roll with its roll chocks in one of two is horizontal in the cassettes on both sides of the stand of the roll stand recorded and guided vertically and / or horizontally adjustable therein that the Cassettes can be pivoted in opposite directions about a common central vertical axis are provided by the upper and on the cross member and the cassette lower centering pin bearings is formed and that each cassette is in the area the stand window over gimbaled gimbal supports at both ends supported vertically against the rolling stand frame.
  • each back-up roller with its roller chocks in one of two horizontally into the double-sided stand window of the roller stand extending cassettes and recorded vertically and / or horizontally is adjustable that the cassettes in opposite directions to a common central vertical axis are pivotable, which are on the column cross member and on the Cassette provided upper and lower centering pin bearings is formed and that each cassette in the area of the stand window over at both ends gimbal-supported pendulum supports supported vertically against the rolling mill frame.
  • the pivoting of the cassettes with the respective rollers accommodated therein or pairs of rollers can be according to an embodiment of the invention by means of essentially horizontally acting power drives, on the one hand grasp the roller stand and the other hand on the respective cassette.
  • Mechanical synchronization means prevent the cassette from tilting in the Roller stand.
  • the cassettes can advantageously between both sides arranged hydraulic cylinders can be clamped so that a backlash-free Cassette guidance is guaranteed.
  • the Cassettes can be hydraulically balanced against the upper and lower pendulum supports are.
  • the lower balance also serves to raise the system to change the roller and to move the step wedges to adjust the Allow pass-line.
  • the Hydraulic cylinder for vertical adjustment in the upper or lower cassette adjustable pair of rollers together with the corresponding ones Servo valves as well as the balancing and bending cylinders for the rollers are installed inside the cassette. It is achieved on the one hand that the Rolling forces are always introduced centrally and on the other hand the installation and removal the rollers are significantly simplified.
  • the cassette solution according to the invention allows the work rolls to be moved in the axial direction as well as a positive and negative work roll bending.
  • the axial displacement of the work rolls can be easily achieved if, according to a further feature of the invention, each work roll is displaceable in the axial direction via a two-armed lever system, the pivot point of which is arranged on the cassette, one lever arm of which is connected to a power drive supported on the cassette and the other Lever arm is non-positively or positively connected to the chock of the work roll.
  • connection of the lever arm to the chock takes place via rollers which are arranged at the end of the lever and are supported on the chock.
  • the lever arms in Area of the chocks transverse to the direction of movement of the work rolls are pivotable away to enable the work rolls to be removed.
  • the system according to the invention thus created enables the positive and negative Bending as well as the axial displaceability of the work rolls in a simple functional device with a very large adjustment range for the profile and Flatness control. Dynamic pair crossing is possible with simple means, without having to use expensive, expensive swivel or eccentric bearings.
  • 1 is the stand of a four-high rolling mill, whose Work rolls 2a, 2b and backup rolls 3a, 3b in pairs 2a, 3a and 2b, 3b in an upper cassette 4a or a lower cassette 4b, vertically displaceable led, arranged.
  • the work rolls 2a, 2b are also by means of double-sided lever 5 axially, i.e. can be moved across the drawing plane.
  • the cassettes 4a, 4b extend transversely to the roller pairs, in part partially Rolling plane from one side of the stand 1 to the other and extend into the two sides of the stand 1 provided stand window 6. Between the cheek 6a each Stand window 6 and the cassettes 4a, 4b is left a distance that one allows lateral adjustment of the cassettes 4a, 4b.
  • the roll stand is shown rotated by 90 °.
  • recesses 7 are provided in which the pendulum supports 8 extend approximately vertically.
  • the pendulum supports are on gimbaled at their ends.
  • dome-shaped support pairs 9 provided an inclined position of the pendulum supports 8 even under rolling load enable.
  • the upper and lower pendulum supports 8 are attached to the cassettes 4a, 4b attacking balancing cylinder 12 between the stand head 1b and the Cassette 4a clamped; the pass-line setting (height adjustment of the system) of the lower pair of rollers is done conventionally via step wedges 15.
  • the pass-line setting (height adjustment of the system) of the lower pair of rollers is done conventionally via step wedges 15.
  • the upper, vertically adjustable pair of rollers are hydraulic cylinders 16 together with the associated servo valves in the upper cassette 4a built inside the same.
  • Each work roll 2a, 2b is in the axial direction via a two-armed lever system 5 displaceable, the pivot point 19 on the respective cassette 4a or 4b is arranged, one lever arm at 18a with one on the cassette 4a or 4b supported power drive 20 is connected and the other lever arm 18b is non-positively or positively connected to the chock of the work roll.
  • the connection of the lever arm 18b with the chock 21 takes place via rollers 22, which are arranged at the end of the lever 5 and mounted on the respective Support chock 21.
  • each lever arm as indicated by dashed lines at 23, in the region of an articulated joint 24 transverse to Chock 21 are pivoted to the roller 22 from the area of To move the chock out.
  • a hydraulic cylinder 25 is between the Lever arms of the lever system 5 arranged on both sides of the chocks arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Rolling Contact Bearings (AREA)
  • Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)

Abstract

A roll stand with backup rolls and work rolls for rolling sheet and strip in which the upper and lower work rolls, together with the backup rolls associated therewith, can be displaced from the common vertical plane into positions in which the vertical planes passing through the roll axes of the work rolls and backup rolls intersect in that chocks supporting each roll within the housing window are displaced in pairs horizontally in opposite directions. Each pair of rolls formed of the upper and lower backup rolls and work rolls is received by its roll chocks in one of two cassettes extending horizontally into the housing windows located on either side of the roll housing and is guided therein such that it can be vertically and/or horizontally adjusted. The cassettes can be swiveled in opposite directions about a common central vertical axis formed by upper and lower centering pin bearings provided at the housing crosspiece and at the cassette, and each cassette is vertically supported in the area of the housing windows against the roll stand frame by articulated supports mounted on cardan joints at both ends.

Description

Die Erfindung betrifft ein Walzgerüst mit Stütz- und/oder Arbeitswalzen zum Walzen von Blechen und Bändern, bei dem die oberen und unteren Arbeitswalzen ggf. zusammen mit den ihnen zugeordneten Stützwalzen durch paarweises gegensinniges horizontales Verschieben der jede Walze innerhalb der Ständerfenster lagernden Einbaustücke aus der gemeinsamen Vertikalebene heraus in Stellungen verschiebbar sind, in der sich die durch die Walzenachsen der Arbeits- und Stützwalzen verlaufenden Vertikalebenen kreuzen.The invention relates to a roll stand with support and / or work rolls for rolling of sheets and strips in which the upper and lower work rolls may together with the support rollers assigned to them by pairs in opposite directions horizontal displacement of each roller stored within the stand window Chocks can be moved into positions from the common vertical plane are in which by the roll axes of the work and backup rolls crossing vertical planes.

Systeme, bei denen eine paarweise und gegensinnige Verschwenkung von Ober- und Unterwalzen eines Quarto-Walzgerüstes vorgenommen wird, sind auch als Pair-Cross-Rolling-Systeme bekannt. Durch Verschränkung der Walzen und das Kreuzen der Walzenachsen kann das Profil des Walzgutes eingestellt werden, ohne wie sonst erforderlich, hohe Arbeitswalzen-Biegekräfte aufbringen zu müssen. Ein daraus sich ergebender Vorteil ist die Erhöhung der Lagerstandzeiten.Systems in which a paired and opposite pivoting of top and Bottom rolling of a four-high mill stand is also called pair-cross-rolling systems known. By crossing the rollers and crossing them the profile of the rolling stock can be adjusted without any other adjustment necessary to have to apply high work roll bending forces. One out of yourself the resulting advantage is the increase in the service life.

Gleichsam sind Systeme bekannt, bei denen entweder nur die Arbeitswalzen oder nur die Stützwalzen gekreuzt werden, um damit das geforderte Profil am Walzgut einzustellen oder zu beeinflussen.At the same time, systems are known in which either only the work rolls or only the back-up rolls are crossed in order to achieve the required profile on the rolling stock adjust or influence.

Zum Verstellen (Crossing) der Walzen sind die verschiedensten Lösungen vorgeschlagen worden. Die europäische Patentanmeldung 0 525 552 A1 schlägt für die Einbaustücke der Arbeits- und der Stützwalzen gemeinsame Verschiebeblöcke vor, die zwischen den Einbaustücken und dem Walzenständer angeordnet sind und an ihren den Einbaustücken abgewandten Seiten Keilflächen aufweisen, welche mit vertikal verstellbaren Verschiebeantrieben mit ebensolchen Keilflächen korrespondieren. Beim Verstellen dieser Verschiebeantriebe bewirken die aufeinandergleitenden Keilflächen eine Horizontalverschiebung der Verschiebeblöcke, wodurch diese die seitlich anliegenden Einbaustücke verstellen und die Walzen paarweise gekreuzt werden.There are a wide variety of solutions for crossing the rollers been proposed. European patent application 0 525 552 A1 suggests the chocks of the work and backup rolls common sliding blocks before, which are arranged between the chocks and the roll stand and have on their sides facing away from the chocks wedge surfaces which with vertically adjustable slide drives with the same wedge surfaces correspond. When adjusting these sliding drives, the on wedge surfaces sliding on each other a horizontal displacement of the Sliding blocks, which adjust the side chocks and the rollers are crossed in pairs.

Aus der gleichen Schrift sind auch andere Verstellantriebe bekannt geworden, wie Hydraulikzylinder oder mechanisch auf die Einbaustücke wirkende Spindeln, mit denen jeweils die Einbaustücke zur Veränderung der Walzenpositionen innerhalb des Ständerfensters horizontal verschoben werden.Other actuators have become known from the same document, such as Hydraulic cylinders or spindles acting mechanically on the chocks, with which each have the chocks for changing the roller positions within the Stand window can be moved horizontally.

Eine weitere bekannte Lösung (DE 195 10 694.6) zum Kreuzen von Walzen sieht vor, die Verstellung der Walzenpaare mittels als U-förmige Druckstücke ausgebildeter Verschiebeblöcke vorzunehmen, deren Stege mit kalottenförmigen Außenseiten an den Einbaustücken anliegen und deren Schenkel die Ständersäule des Walzenständers beidseitig umgreifen. Zum Verschieben der Druckstücke in deren beiden die Ständersäule des Walzenständers umgreifenden Schenkeln sind Querbohrungen vorgesehen, in denen am Walzenständer angeordnete zu den Achsen der Querbohrungen parallele Achsen verdrehbare Exzenter gelagert sind.Another known solution (DE 195 10 694.6) for crossing rollers provides the adjustment of the roller pairs by means of U-shaped pressure pieces Make sliding blocks, whose webs with dome-shaped outer sides fit the chocks and their legs the column of the Grip the roller stand on both sides. To move the pressure pieces in their are both legs around the column of the roll stand Cross holes are provided, in which arranged on the roll stand Axes of the cross holes parallel axes are rotatable eccentric.

Alle diese bekannten Cross-Rolling- und Pair-Cross-Rolling-Systeme sind sehr aufwendig, sie erfordern gewöhnlich spezielle Arbeitswalzen-Lager; die Walzen bzw. die Walzensätze müssen mit Axialverriegelungen versehen sein, um die durch die systembedingte Schrägstellung der Walzen auftretenden Axialkräfte aufnehmen zu können. Ein weiterer Nachteil ist darin zu sehen, daß Verstellbauteile im Bereich der Gerüstführungen angeordnet sind, die den Walzenwechsel behindern. Exzenter und Führungen bedeuten besonders aufwendige Herstellungsmethoden.All of these known cross rolling and pair cross rolling systems are very expensive, they usually require special work roll bearings; the rollers or the roller sets must be provided with axial locks in order to be able to move through the system-related inclination of the rollers occurring axial forces increase can. Another disadvantage is the fact that adjustment components in the area of Scaffold guides are arranged that hinder the roll change. Eccentric and Guides mean particularly complex manufacturing methods.

Ausgehend von einem Stand der Technik, wie er durch die DE 195 10 694.6 bekannt ist, besteht die Aufgabe der vorliegenden Erfindung darin, ein Walzgerüst mit einfachen Verschiebeantrieben und hoher Systemstabilität zu schaffen, das mit einfachen konstruktiven Mitteln ein Verschränken der Walzen mit herkömmlichen Lagern ermöglicht.Starting from a prior art, as known from DE 195 10 694.6 is, the object of the present invention is to provide a roll stand simple sliding drives and high system stability to create that with simple constructive means an entanglement of the rollers with conventional Storage allows.

Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß jedes aus oberer bzw. unterer Stütz- und Arbeitswalze gebildete Walzenpaar mit seinen Walzeneinbaustücken in einer von zwei sich horizontal in die beidseitigen Ständerfenster des Walzenständers hinein erstreckenden Kassetten aufgenommen und darin vertikal und/oder horizontal verstellbar geführt ist, daß die Kassetten gegensinnig um eine gemeinsame zentrale vertikale Achse verschwenkbar sind, die durch am Ständerquerholm und an der Kassette vorgesehene obere und untere Zentrierzapfenlagerungen gebildet ist und daß sich jede Kassette im Bereich der Ständerfenster über an ihren beiden Enden kardanisch gelagerte Pendelstützen vertikal gegen den Walzgerüstrahmen abstützt.To solve the problem it is proposed according to the invention that each of the upper or lower support and work roll pair formed with his Roller chocks in one of two horizontally into the two sides Stand window of the roller stand into the cassettes extending and is vertically and / or horizontally adjustable in that the cassettes are pivotable in opposite directions about a common central vertical axis, the by means of upper and lower provided on the cross member and on the cassette Centering pin bearings is formed and that each cassette in the area of Column window over gimbaled gimbal supports at both ends supported vertically against the rolling stand frame.

Die Erfindung ist auch anwendbar, wenn ein sogenanntes Duo-Walzwerk mit nur zwei Arbeitswalzen eingesetzt wird. In diesem Fall wird erfindungsgemäß vorgesehen, daß jede Arbeitswalze mit ihren Walzeneinbaustücken in einer von zwei sich horizontal in die beidseitigen Ständerfenster des Walzenständers hinein erstreckenden Kassetten aufgenommen und darin vertikal und/oder horizontal verstellbar geführt ist, daß die Kassetten gegensinnig um eine gemeinsame zentrale vertikale Achse verschwenkbar sind, die durch am Ständerquerholm und an der Kassette vorgesehene obere und untere Zentrierzapfenlagerungen gebildet ist und daß sich jede Kassette im Bereich der Ständerfenster über an ihren beiden Enden kardanisch gelagerte Pendelstützen vertikal gegen den Walzgerüstrahmen abstützt.The invention is also applicable when a so-called duo rolling mill with only two Work rolls is used. In this case, the invention provides that each work roll with its roll chocks in one of two is horizontal in the cassettes on both sides of the stand of the roll stand recorded and guided vertically and / or horizontally adjustable therein that the Cassettes can be pivoted in opposite directions about a common central vertical axis are provided by the upper and on the cross member and the cassette lower centering pin bearings is formed and that each cassette is in the area the stand window over gimbaled gimbal supports at both ends supported vertically against the rolling stand frame.

Darüber hinaus ist es auch denkbar, die Erfindung an Walzgerüsten anzuwenden, bei denen die Arbeitswalzen unverschwenkbar festgelegt und die Stützwalzen gekreuzt werden können. Bei einem solchen Walzwerk ist erfindungsgemäß vorgesehen, daß jede Stützwalze jeweils mit ihren Walzeneinbaustücken in einer von zwei sich horizontal in die beidseitigen Ständerfenster des Walzenständers hinein erstreckenden Kassetten aufgenommen und darin vertikal und/oder horizontal verstellbar geführt ist, daß die Kassetten gegensinnig um eine gemeinsame zentrale vertikale Achse verschwenkbar sind, die durch am Ständerquerholm und an der Kassette vorgesehene obere und untere Zentrierzapfenlagerungen gebildet ist und daß sich jede Kassette im Bereich der Ständerfenster über an ihren beiden Enden kardanisch gelagerte Pendelstützen vertikal gegen den Walzgerüstrahmen abstützt.In addition, it is also conceivable to apply the invention to roll stands at which the work rolls fixed and crossed the backup rolls can be. In such a rolling mill, the invention provides that each back-up roller with its roller chocks in one of two horizontally into the double-sided stand window of the roller stand extending cassettes and recorded vertically and / or horizontally is adjustable that the cassettes in opposite directions to a common central vertical axis are pivotable, which are on the column cross member and on the Cassette provided upper and lower centering pin bearings is formed and that each cassette in the area of the stand window over at both ends gimbal-supported pendulum supports supported vertically against the rolling mill frame.

Mit der vorgeschlagenen Konstruktion wird mit sehr einfachen mechanischen Mitteln eine hochwirksame Lösung geschaffen. Komplizierte Verstellkonstruktionen mit teuren Axiallagereinheiten entfallen dadurch, daß die zentrische Zentrierzapfenlagerung die aus dem Kreuzen der Walzen in den Kassetten entstehenden großen Axialkräfte sicher aufnimmt; denn der mittig angeordnete Zentrierzapfen läßt keine axiale Verschiebung der Kassette beim Verschwenken zu. Die vertikale Abstützung der Kassetten auf beweglichen Pendelstützen ermöglicht sowohl die Schwenkbewegung als auch eine thermische Dehnung der Kassette, ohne daß es zu Verspannungen im System kommt.With the proposed design, mechanical means are very simple created a highly effective solution. Complicated adjustment structures with expensive axial bearing units are dispensed with because the centric Centering pin bearing from the crossing of the rollers in the cassettes absorbs the large axial forces that arise; because the one in the middle Centering pin does not allow any axial displacement of the cassette when pivoting. The vertical support of the cassettes on movable pendulum supports enables both the pivoting movement and thermal expansion of the cassette without that there is tension in the system.

Durch die Einleitung des Walzdruckes über die Pendelstützen in die Querhäupter der Walzenständer entstehen auch keine Einschnürungen an der Kassetten, wie sie beim herkömmlichen Walzwerk an den Walzenständern bekannt sind. Daraus resultiert, daß ein engeres Spiel zwischen Einbaustück und Führung gewählt werden kann, was eine bessere und sicherere Führung der Walzen bedeutet.By introducing the rolling pressure over the pendulum supports into the crossheads of the Roller stands also do not constrict the cassettes, as is the case with conventional rolling mill on the roll stands are known. This results, that a closer game can be chosen between chock and guide what better and safer guidance of the rollers means.

Die Verschwenkung der Kassetten mit den darin aufgenommenen jeweiligen Walzen bzw. Walzenpaaren läßt sich nach einem ausgestalteten Merkmal der Erfindung mittels im wesentlichen horizontal wirkender Kraftantriebe vornehmen, die einerseits am Walzenständer und andererseits an der jeweiligen Kassette angreifen. Mechanische Synchronisationsmittel verhindern ein Verkanten der Kassette im Walzenständer. Die Kassetten können dabei vorteilhafterweise zwischen beidseitig angeordneten Hydraulikzylindern eingespannt sein, so daß eine spielfreie Kassettenführung gewährleistet ist.The pivoting of the cassettes with the respective rollers accommodated therein or pairs of rollers can be according to an embodiment of the invention by means of essentially horizontally acting power drives, on the one hand grasp the roller stand and the other hand on the respective cassette. Mechanical synchronization means prevent the cassette from tilting in the Roller stand. The cassettes can advantageously between both sides arranged hydraulic cylinders can be clamped so that a backlash-free Cassette guidance is guaranteed.

Nach einer weiteren bevorzugten Lösung der Erfindung ist vorgesehen, daß die Kassetten hydraulisch gegen die oberen und unteren Pendelstützen ausbalancierbar sind. Die untere Ausbalancierung dient dabei gleichzeitig zum Anheben des Systems zum Walzenwechsel sowie um das Verschieben der Stufenkeile zum Einstellen der Pass-line zu ermöglichen.According to a further preferred solution of the invention it is provided that the Cassettes can be hydraulically balanced against the upper and lower pendulum supports are. The lower balance also serves to raise the system to change the roller and to move the step wedges to adjust the Allow pass-line.

In einer weiteren erfindungsgemäßen Ausgestaltung ist vorgesehen, daß die Hydraulikzylinder zur Anstellung des in der oberen oder der unteren Kassette vertikal verstellbar gelagerten Walzenpaares gemeinsam mit den dazugehörenden Servoventilen sowie die Ausbalancierungs- und Biegezylinder für die Walzen innerhalb der Kassette eingebaut sind. Dadurch wird einerseits erreicht, daß die Walzkräfte immer zentrisch eingeleitet werden und andererseits der Ein- und Ausbau der Walzen deutlich vereinfacht wird. In a further embodiment according to the invention it is provided that the Hydraulic cylinder for vertical adjustment in the upper or lower cassette adjustable pair of rollers together with the corresponding ones Servo valves as well as the balancing and bending cylinders for the rollers are installed inside the cassette. It is achieved on the one hand that the Rolling forces are always introduced centrally and on the other hand the installation and removal the rollers are significantly simplified.

Die erfindungsgemäße Kassettenlösung läßt ein Verschieben der Arbeitswalzen in Axialrichtung ebenso zu wie eine positive und negative Arbeitswalzenbiegung. Die Axialverschiebung der Arbeitswalzen läßt sich einfach erreichen, wenn nach einem weiteren Merkmal der Erfindung jede Arbeitswalze in Axialrichtung über ein zweiarmiges Hebelsystem verschiebbar ist, dessen Schwenkpunkt an der Kassette angeordnet ist, dessen einer Hebelarm mit einem an der Kassette abgestützten Kraftmittelantrieb verbunden ist und dessen anderer Hebelarm mit dem Einbaustück der Arbeitswalze kraft- oder formschlüssig verbunden ist.
Um die Verschiebung zu erleichtern und die Verschiebekräfte momentfrei in die Einbaustücke einleiten zu können ist nach einem anderen Merkmal der Erfindung vorgesehen, daß die Verbindung des Hebelarmes mit dem Einbaustück über Rollen erfolgt, die am Ende des Hebels drehgelagert angeordnet sind und sich am Einbaustück abstützen.The cassette solution according to the invention allows the work rolls to be moved in the axial direction as well as a positive and negative work roll bending. The axial displacement of the work rolls can be easily achieved if, according to a further feature of the invention, each work roll is displaceable in the axial direction via a two-armed lever system, the pivot point of which is arranged on the cassette, one lever arm of which is connected to a power drive supported on the cassette and the other Lever arm is non-positively or positively connected to the chock of the work roll.
In order to facilitate the displacement and to be able to introduce the displacement forces momentarily into the chocks, according to another feature of the invention it is provided that the connection of the lever arm to the chock takes place via rollers which are arranged at the end of the lever and are supported on the chock.

Als besonders günstig wird angesehen, wenn erfindungsgemäß die Hebelarme im Bereich der Einbaustücke quer zur Verschieberichtung der Arbeitswalzen wegschwenkbar sind, um den Ausbau der Arbeitswalzen zu ermöglichen.It is considered particularly favorable if, according to the invention, the lever arms in Area of the chocks transverse to the direction of movement of the work rolls are pivotable away to enable the work rolls to be removed.

Das so geschaffene erfindungsgemäße System ermöglicht die positive und negative Biegung sowie die axiale Verschiebbarkeit der Arbeitswalzen in einer einfachen funktionellen Vorrichtung mit einem sehr großen Stellbereich für die Profil- und Planheitsregelung. Dynamisches Pair-Crossing wird mit einfachen Mitteln möglich, ohne daß aufwendige teure Schwenk- oder Exzenterlager eingesetzt werden müssen.The system according to the invention thus created enables the positive and negative Bending as well as the axial displaceability of the work rolls in a simple functional device with a very large adjustment range for the profile and Flatness control. Dynamic pair crossing is possible with simple means, without having to use expensive, expensive swivel or eccentric bearings.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben. Es zeigt:

Figur 1
die Seitenansicht eines erfindungsgemäßen Quarto-Walzgerüstes,
Figur 2
eine um 90° gedrehte Ansicht des Walzgerüstes nach Figur 1.
An embodiment of the invention is shown in the drawing and is described below. It shows:
Figure 1
the side view of a four-high mill stand according to the invention,
Figure 2
a view rotated by 90 ° of the rolling stand according to FIG. 1.

In Figur 1 ist mit 1 der Ständer eines Quarto-Walzgerüstes bezeichnet, dessen Arbeitswalzen 2a, 2b und Stützwalzen 3a, 3b jeweils paarweise 2a, 3a bzw. 2b, 3b in einer oberen Kassette 4a bzw. einer unteren Kassette 4b, vertikal verschiebbar geführt, angeordnet sind. Die Arbeitswalzen 2a, 2b sind darüber hinaus mittels der doppelseitigen Hebel 5 axial, d.h. quer zur Zeichnungsebene, verschiebbar.In Figure 1, 1 is the stand of a four-high rolling mill, whose Work rolls 2a, 2b and backup rolls 3a, 3b in pairs 2a, 3a and 2b, 3b in an upper cassette 4a or a lower cassette 4b, vertically displaceable led, arranged. The work rolls 2a, 2b are also by means of double-sided lever 5 axially, i.e. can be moved across the drawing plane.

Die Kassetten 4a, 4b erstrecken sich, die Walzenpaare teilweise umfassend, quer zur Walzebene von einer Seite des Ständers 1 zur anderen und reichen in die beidseitig des Ständers 1 vorgesehenen Ständerfenster 6 hinein. Zwischen der Wange 6a jedes Ständerfensters 6 und den Kassetten 4a, 4b ist ein Abstand belassen, der eine seitliche Verstellung der Kassetten 4a, 4b ermöglicht.The cassettes 4a, 4b extend transversely to the roller pairs, in part partially Rolling plane from one side of the stand 1 to the other and extend into the two sides of the stand 1 provided stand window 6. Between the cheek 6a each Stand window 6 and the cassettes 4a, 4b is left a distance that one allows lateral adjustment of the cassettes 4a, 4b.

In Figur 2 ist der Walzenständer um 90° gedreht dargestellt. Im Bereich der Ständerquerhäupter 1a, 1b des Ständers 1 sind Ausnehmungen 7 vorgesehen, in denen sich die Pendelstützen 8 etwa senkrecht erstrecken. Die Pendelstützen sind an ihren Enden kardanisch gelagert. Dazu sind kalottenförmige Stützpaarungen 9 vorgesehen, die eine Schrägstellung der Pendelstützen 8 auch unter Walzlast ermöglichen.In Figure 2, the roll stand is shown rotated by 90 °. In the field of Stand crosshead 1a, 1b of the stand 1, recesses 7 are provided in which the pendulum supports 8 extend approximately vertically. The pendulum supports are on gimbaled at their ends. There are dome-shaped support pairs 9 provided an inclined position of the pendulum supports 8 even under rolling load enable.

Um die aus den Walzkräften resultierenden Axialkräfte, die beim Verschwenken der Walzenpaare 2a, 3a; 3b, 2b entstehen, sicher und in einer einfachen Konstruktion aufnehmen zu können, ist in der Mitte der Kassette 4a auf der der Stützwalze 3a abgewandten Seiten ein sich in vertikale Richtung erstreckender Zapfen 10 vorgesehen, der in das Zapfenlager 11 eingreift, welches an der oberen Quertraverse des Walzgerüstes angebracht ist. Ein gleicher Zapfen 10 ist an der unteren Kassette 4b senkrecht nach unten gerichtet angebracht, der in die Zapfenlagerung 11 an der unteren Quertraversen 1c des Walzgerüstes 1 bzw. an der Sohlplatte eingreift. Die beiden Zapfen 10 sind in einer gemeinsamen vertikalen Achse fluchtend angeordnet und bilden die Schwenkachse S für die Kassetten 4a, 4b beim gegensinnigen Verstellen der Kassetten.To the axial forces resulting from the rolling forces when pivoting the Roller pairs 2a, 3a; 3b, 2b arise, safely and in a simple construction To be able to record is in the middle of the cassette 4a on that of the support roller 3a a pin 10 extending in the vertical direction provided, which engages in the journal bearing 11, which on the upper crossbar of the roll stand is attached. An identical pin 10 is on the lower cassette 4b attached vertically downward, which in the pin bearing 11 on the engages the lower crossbeams 1c of the rolling stand 1 or on the base plate. The two pins 10 are arranged in alignment in a common vertical axis and form the pivot axis S for the cassettes 4a, 4b in the opposite direction Adjusting the cassettes.

Die oberen und unteren Pendelstützen 8 werden mit Hilfe der an den Kassetten 4a, 4b angreifenden Ausbalancierzylinder 12 zwischen dem Ständerguerhaupt 1b und der Kassette 4a eingespannt; die Pass-line-Einstellung (Höheneinstellung des Systems) des unteren Walzenpaares erfolgt konventionell über Stufenkeile 15. Zur Anstellung des oberen vertikal verstellbar gelagerten Walzenpaares sind Hydraulikzylinder 16 gemeinsam mit den dazugehörenden Servoventilen in der oberen Kassette 4a innerhalb derselben eingebaut. The upper and lower pendulum supports 8 are attached to the cassettes 4a, 4b attacking balancing cylinder 12 between the stand head 1b and the Cassette 4a clamped; the pass-line setting (height adjustment of the system) of the lower pair of rollers is done conventionally via step wedges 15. For employment of the upper, vertically adjustable pair of rollers are hydraulic cylinders 16 together with the associated servo valves in the upper cassette 4a built inside the same.

Zum Verschwenken der Kassetten 4a, 4b um die Zapfen 10 sind mechanisch (bei 13) synchronisierte, horizontal verstellbare Hydraulikzylinder 17 vorgesehen, die zwischen Ständer 1 und Kassetten 4a bzw. 4b wirken. Über mit geringem Druck vorspannbare Hydraulikzylinder 14 läßt sich das System spielfrei halten, wodurch die Walzgenauigkeit weiter verbessert wird.To pivot the cassettes 4a, 4b around the pins 10 are mechanically (at 13) Synchronized, horizontally adjustable hydraulic cylinder 17 provided between Stand 1 and cassettes 4a and 4b act. About preloadable with low pressure Hydraulic cylinder 14 can keep the system free of play, which the Rolling accuracy is further improved.

Jede Arbeitswalze 2a, 2b ist in Axialrichtung über ein zweiarmiges Hebelsystem 5 verschiebbar, dessen Schwenkpunkt 19 an der jeweiligen Kassette 4a bzw. 4b angeordnet ist, dessen einer Hebelarm bei 18a mit einen an der Kassette 4a bzw. 4b abgestützten Kraftmittelantrieb 20 verbunden ist und dessen anderer Hebelarm bei 18b mit dem Einbaustück der Arbeitswalze kraft- oder formschlüssig verbunden ist. Die Verbindung des Hebelarmes 18b mit dem Einbaustück 21 erfolgt über Rollen 22, die am Ende des Hebels 5 drehgelagert angeordnet sind und sich am jeweiligen Einbaustück 21 abstützen. Beim Betätigen des Kraftmittelantriebes 20 in der einen oder anderen Richtung läßt sich die jeweilige Arbeitswalze 2a oder 2b in ihrer Axialrichtung verstellen. Zum Ausbau der Arbeitswalzen 2a, 2b kann jeder Hebelarm, wie bei 23 gestrichelt angedeutet, im Bereich eines Knickgelenkes 24 quer zum Einbaustück 21 ausgeschwenkt werden, um die Rolle 22 aus dem Bereich des Einbaustückes herauszubewegen. Dazu ist ein Hydraulikzylinder 25 zwischen den beidseitig der Einbaustücke angeordneten Hebelarmen des Hebelsystems 5 angeordnet.Each work roll 2a, 2b is in the axial direction via a two-armed lever system 5 displaceable, the pivot point 19 on the respective cassette 4a or 4b is arranged, one lever arm at 18a with one on the cassette 4a or 4b supported power drive 20 is connected and the other lever arm 18b is non-positively or positively connected to the chock of the work roll. The connection of the lever arm 18b with the chock 21 takes place via rollers 22, which are arranged at the end of the lever 5 and mounted on the respective Support chock 21. When actuating the power drive 20 in one or other direction can the respective work roll 2a or 2b in their Adjust the axial direction. To remove the work rolls 2a, 2b, each lever arm, as indicated by dashed lines at 23, in the region of an articulated joint 24 transverse to Chock 21 are pivoted to the roller 22 from the area of To move the chock out. For this purpose, a hydraulic cylinder 25 is between the Lever arms of the lever system 5 arranged on both sides of the chocks arranged.

Claims (9)

  1. Rolling stand with back-up and working rolls (3a, 3b, 2a, 2b) for rolling sheet metal and metal rings, in which the upper and lower working rolls (2a, 2b), together with the back-up rolls (3a, 3b) assigned to them, may be shifted by paired horizontal displacement in the opposite direction of the chocks (21) mounting each roll within the stand windows (6), out of the common vertical plane into positions in which the vertical planes running through the roller axes of the working and back-up rolls (2a, 2b, 3a, 3b) intersect,
    characterised in that
    each roller pair (2a, 3a and 2b, 3b) formed from an upper and lower back-up and working roll is taken up with its roller chocks (21) in one of two cassettes (4a, 4b) extending horizontally into the stand windows (6) on both sides of the roller stand (1), and guided adjustably thereinto vertically and/or horizontally, that the cassettes (4a, 4b) may be horizontally swung in the opposite direction around a common central vertical axis (S) formed by upper and lower centering trunnion mountings (10, 11) provided for at the stand cross-member and at the cassette (4a and 4b), and that each cassette (4a, 4b) is supported vertically against the rolling-stand frame (1) in the region of the stand windows (6) via articulated supports (8) cardanically mounted (near 9) at both of its ends.
  2. Rolling stand for rolling sheet metal and metal rings, in which the working rolls (2a, 2b) may be shifted by horizontal displacement in the opposite direction of the chocks (21) mounting each roll within the stand windows (6), out of the common vertical plane into positions in which the vertical planes running through the roller axes of the working rolls (2a, 2b) intersect,
    characterised in that
    each working roll (2a, 2b) is taken up with its roller chocks (21) in one of two cassettes (4a, 4b) extending horizontally into the stand windows (6) on both sides of the roller stand (1), and guided adjustably thereinto vertically and/or horizontally, that the cassettes (4a, 4b) may be horizontally swung in the opposite direction around a common central vertical axis (S) formed by upper and lower centering trunnion mountings (10, 11) provided for at the stand cross-member and at the cassette (4a and 4b), and that each cassette (4a, 4b) is supported vertically against the rolling-stand frame (1) in the region of the stand windows (6) via articulated supports (8) cardanically mounted (near 9) at both ends of the cassette.
  3. Rolling stand with a pair of back-up rolls (3a, 3b) and a pair of working rolls (2a, 2b) supported by the latter, for rolling sheet metal and metal rings, in which the rolls of a pair of rolls may be shifted by paired horizontal displacement in the opposite direction of the chocks (21) mounting each roll within the stand windows (6), out of the common vertical plane into positions in which the vertical planes running through the roller axes of the rolls of this pair of rolls intersect,
    characterised in that
    each back-up roll (3a, 3b) is taken up with its respective roller chocks in one of two cassettes (4a, 4b) extending horizontally into the stand windows (6) on both sides of the rolling stand (1), and guided adjustably thereinto vertically and/or horizontally, that the cassettes (4a, 4b) may be horizontally swung in the opposite direction around a common central vertical axis (S) formed by upper and lower centering trunnion mountings (10, 11) provided for at the stand cross-member and at the cassette (4a and 4b), and that each cassette (4a, 4b) is supported vertically against the rolling-stand frame (1) in the region of the stand windows (6) via articulated supports (8) cardanically mounted (near 9) at both ends of the cassette.
  4. Rolling stand according to claims 1, 2 and 3,
    characterised in that
    mechanical forces (17) acting substantially horizontally, which are applied on the one hand at the rolling stand (1) and on the other hand at the cassette in question (4a or 4b), are provided to swing the cassettes (4a, 4b) horizontally.
  5. Rolling stand according to claims 1 to 4,
    characterised in that
    the cassettes (4a, 4b) may be hydraulically balanced (12) against the upper and lower articulated supports (8).
  6. Rolling stand according to claims 1 to 5,
    characterised in that
    the hydraulic cylinders (16) for adjusting the roller pair (2a, 3a or 2b, 3b) mounted vertically adjustably in the upper (4a) or lower cassette (4b) together with the necessary servo valves and the balance and bending cylinders for the rollers within the cassette (4a or 4b) are built-in.
  7. Rolling stand according to claims 1 to 6,
    characterised in that
    each working roll (2a, 2b) is displaceable in an axial direction via a two-armed lever system (5) whose pivoting point (19) is disposed on the cassette (4a or 4b), one of whose lever arms is connected with a mechanical drive (20) supported on the cassette, and the other of whose lever arms is connected non-positively or positively with the chock (21) of the working roll (2a or 2b).
  8. Rolling stand according to claim 7,
    characterised in that
    the connection of the lever arm with the chock (21) is effected via rollers (22) disposed at the end of the lever in a rotatably mounted fashion and supported at the chock (21).
  9. Rolling stand according to claims 7 and 8,
    characterised in that
    the lever arms in the region of the chocks (21) may be swung away crossways to the direction of displacement of the working rolls (4a, 4b) in order to allow for removal of the working rolls (2a, 2b).
EP99919049A 1998-08-28 1999-03-02 Rolling stand with crossing back-up and/or working rolls Expired - Lifetime EP1107835B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19840538 1998-08-28
DE19840538A DE19840538A1 (en) 1998-08-28 1998-08-28 Roll stand with crossed support and / or work rolls
PCT/DE1999/000628 WO2000012236A1 (en) 1998-08-28 1999-03-02 Rolling stand with crossing back-up and/or working rolls

Publications (2)

Publication Number Publication Date
EP1107835A1 EP1107835A1 (en) 2001-06-20
EP1107835B1 true EP1107835B1 (en) 2002-05-15

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Application Number Title Priority Date Filing Date
EP99919049A Expired - Lifetime EP1107835B1 (en) 1998-08-28 1999-03-02 Rolling stand with crossing back-up and/or working rolls

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US (1) US6519994B1 (en)
EP (1) EP1107835B1 (en)
JP (1) JP2002523242A (en)
KR (1) KR20010072202A (en)
CN (1) CN1139440C (en)
AT (1) ATE217549T1 (en)
AU (1) AU3698399A (en)
BR (1) BR9913297A (en)
CA (1) CA2341380A1 (en)
DE (2) DE19840538A1 (en)
ES (1) ES2173737T3 (en)
WO (1) WO2000012236A1 (en)

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JP3692319B2 (en) * 2001-07-30 2005-09-07 三菱重工業株式会社 Rolling mill and rolling method
US8250895B2 (en) * 2007-08-06 2012-08-28 H.C. Starck Inc. Methods and apparatus for controlling texture of plates and sheets by tilt rolling
US9095885B2 (en) 2007-08-06 2015-08-04 H.C. Starck Inc. Refractory metal plates with improved uniformity of texture
DE102008049179A1 (en) * 2008-09-26 2010-04-01 Sms Siemag Aktiengesellschaft rolling device
AT511463B1 (en) * 2011-06-22 2012-12-15 Siemens Vai Metals Tech Gmbh BAND TREATMENT DEVICE
CN103920711B (en) * 2014-04-22 2016-03-30 中冶南方工程技术有限公司 A kind of roll-shifting device of intermediate roller driven
DE102015223516A1 (en) * 2015-09-23 2017-03-23 Sms Group Gmbh Roll stand, rolling mill and method for actively damping vibrations in a rolling stand
CN106224390B (en) * 2016-07-21 2018-12-07 中冶陕压重工设备有限公司 A kind of application method of polishing machine bearing block structure
CN109590331B (en) * 2019-01-22 2024-02-27 江苏东顺新能源科技有限公司 Roller mechanism and lead strip continuous rolling equipment

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JPS638844A (en) * 1986-06-27 1988-01-14 Fuji Photo Film Co Ltd Data compressor/expander in picture filing device
JP2596958B2 (en) * 1988-01-12 1997-04-02 三菱重工業株式会社 Roll oscillation equipment for rolling mill
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IT1293773B1 (en) * 1997-07-24 1999-03-10 Demag Italimpianti Spa LAMINATION CAGE WITH CROSSED ROLLERS, WITH VARIABLE STRUCTURE.

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BR9913297A (en) 2001-05-15
DE19840538A1 (en) 2000-03-09
CN1313795A (en) 2001-09-19
EP1107835A1 (en) 2001-06-20
US6519994B1 (en) 2003-02-18
AU3698399A (en) 2000-03-21
WO2000012236A1 (en) 2000-03-09
DE59901469D1 (en) 2002-06-20
KR20010072202A (en) 2001-07-31
CA2341380A1 (en) 2000-03-09
JP2002523242A (en) 2002-07-30
ES2173737T3 (en) 2002-10-16
CN1139440C (en) 2004-02-25
ATE217549T1 (en) 2002-06-15

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