EP0669172B1 - Rolling stand - Google Patents

Rolling stand Download PDF

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Publication number
EP0669172B1
EP0669172B1 EP95100645A EP95100645A EP0669172B1 EP 0669172 B1 EP0669172 B1 EP 0669172B1 EP 95100645 A EP95100645 A EP 95100645A EP 95100645 A EP95100645 A EP 95100645A EP 0669172 B1 EP0669172 B1 EP 0669172B1
Authority
EP
European Patent Office
Prior art keywords
rolling stand
rolls
protective plates
stand
working
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
EP95100645A
Other languages
German (de)
French (fr)
Other versions
EP0669172A1 (en
Inventor
Bernd Dr. Berger
Peter Reinthal
Manfred Benfer
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.)
Sundwiger Eisenhuette Maschinenfabrik GmbH and Co
Original Assignee
Sundwiger Eisenhuette Maschinenfabrik GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP0669172A1 publication Critical patent/EP0669172A1/en
Application granted granted Critical
Publication of EP0669172B1 publication Critical patent/EP0669172B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the invention relates to a roll stand, in particular multi-roll roll stand, with mudguards, which are arranged in pairs opposite one another above and below the strip processed in the roll stand in the entry and exit area of the roll stand and approximately up to the respective supported by support rollers and / or rollers Work rolls of the roll stand extend into the latter, the lower protective plates in each case being pivotably connected to the lower stand part about an axis arranged parallel to the work rolls.
  • the mudguards used in the roll stands serve to protect the support rolls against damage, which can be caused, for example, by tearing of the strip processed in the roll stand if the strip ends suddenly swing in the direction of the rolls.
  • the lower mudguard also serves as an aid for threading a new strip to be machined or for threading out a finished strip, the mudguards simultaneously ensuring that the work rolls of the roll stand are not damaged.
  • the mudguards in the known roll stand have channels and nozzles via which coolant is applied to the sheets processed in the roll stand.
  • the fenders make it necessary for the fenders to come as close as possible to the work rolls both during threading and unthreading and in the working position of the roll stand. This in turn makes it necessary to make the position of the mudguards relative to the work rolls variable depending on their size.
  • the respective upper fenders are horizontally displaceable, so that they can be pushed into the inlet or outlet area of the mill stand depending on the size of the work rolls.
  • the advantage of this design of the mudguards is that they can safely intercept the vertically deflecting band ends in the event of a band break due to their large-area support.
  • a disadvantage of the known device is that the upper fenders have an unequal distance from the belt when using differently sized work rolls, with large work rolls the distance of the upper fenders to the belt being so great that their protective effect is reduced.
  • Another disadvantage of the known roll stand is that it requires complex lifting means to raise the upper work roll, which is not supported in the rolling operation, when the upper part of the stand is being opened, for example for changing the strip to be processed.
  • the object of the invention is to improve the protective effect of the fenders used in a roll stand of the type mentioned and at the same time to reduce the outlay for the lifting means required for lifting the work roll.
  • the respective upper fenders are pivotally connected to the upper part of the scaffold about an axis which is also arranged parallel to the work rolls, and each have support means on their tip assigned to the work rolls, which support the upper work roll when the upper fenders are pivoted in the direction of the upper part of the frame take.
  • the pivotability of the respective upper fender makes it possible in the roll stand according to the invention to align the respective lower and upper fenders in their pivoting angle so that they have the same distance from the strip at their ends assigned to the work rolls. This setting of the distance between the fenders is independent of the size of the work rolls used in the roll stand.
  • the pivotability of the upper mudguards does not limit the effectiveness of the mudguards, since, for example, in the case of the end of the belt that breaks open, the affected mudguard is brought into contact with the rollers arranged above it and is additionally supported in this way.
  • a high degree of operational safety is always guaranteed regardless of the size of the work rolls used in it.
  • the mudguards are also equipped with support means at their tips assigned to the work rolls, it is possible to use the drives required for pivoting the mudguards at the same time to lift the work roll when the roll stand is open.
  • the additional lifting means for lifting the work roll required in the prior art can be dispensed with.
  • the versatility of the device according to the invention can be further increased in that the mudguards are each divided into an inner part assigned to the work rolls and an outer part, the inner part being pivotable and the outer part being fixed to the respective upper or lower part of the frame connected is.
  • This configuration makes it possible to increase the swivel range and thus the adaptability of the essential parts of the mudguards without reducing operational reliability.
  • the mudguards in the case of the invention can also be designed as cooling plates which have channels and outlet nozzles for a cooling medium to be applied to the strip.
  • the rollers and rollers arranged above the upper mudguards support these mudguards in the event of a malfunction due to a tape tear, it makes sense for the mudguards in question to have cushion pieces on their sides assigned to the supporting rollers and rollers in the area of the rollers or rollers which are directly adjacent to them in such a case, damage to the rollers or rollers is excluded.
  • These upholstery pieces can be designed as bronze inlays.
  • the support means for the upper work roll can be designed as bronze pieces. Damage to the surface of the work rolls coming into contact with the belt by the support means can also be excluded by arranging the support means for the upper work roll on the outer lateral edge of the mudguards.
  • the lower pivotable fenders should rest on the stops which are resiliently resilient in the event of an overload in the working position of the roll stand.
  • the lower mudguards like the corresponding upper mudguards, should be provided with cushion inserts that prevent damage to the support rollers in question in the event of a malfunction.
  • a constant distance between the tips of the mudguards associated with the work rolls and the strip can be achieved in a simple manner in that the respective upper mudguard is in the working position of the roll stand a stop of the associated lower mudguard or the lower part of the scaffold.
  • an upper work roll 1 is supported by intermediate rolls 2,2a, 3,3a, 4 and support rolls 5,5a, 6,6a.
  • the intermediate rolls 2,2a, 3,3a, 4 and the support rolls 5,5a, 6,6a are mounted in an upper part 7 of the stand and are adjustable in height together with the latter.
  • a lower work roll 8 is supported via intermediate rolls 9, 9a, 10, 11, 11a and backup rolls 12, 12a, 13, 13a.
  • the intermediate rolls 9, 9a, 10, 11, 11a and the support rolls 12, 12a, 13, 13a are supported in a lower frame part 14.
  • the height of the intermediate rolls 9, 9a, 10, 11, 11a and the support rolls 12, 12a, 13, 13a can be adjusted within the lower frame part 14 in order to be able to use pairs of work rolls 1.8 of different diameters in the roll stand. In this way it is ensured that the strip B to be processed is always guided in a straight line through the roll stand regardless of the diameter of the work rolls 1.8.
  • a of the roll stand is an upper protective plate 15 designed as a cooling plate, which is divided into an immovable outer part 15 'and a second part 15' 'which can be pivoted by means of hydraulic drives (not shown).
  • the first part 15 'of the fender 15 is firmly attached to the upper frame part 7.
  • a pivot joint 16 is formed for the pivotable part 15 ′′ of the upper fender.
  • Both parts 15 ', 15' 'of the mudguard 15 have channels 17 and nozzles 18, via which a cooling medium can be applied to the strip B processed in the roll stand.
  • support means 19 made of bronze are fastened, via which the work roll 1 is held in the raised position in the open position of the roll stand shown in FIG. 1 .
  • cushion pieces 20, which are also made of bronze are inserted opposite the support roller 5 or intermediate roller 3 in the side of the pivotable mudguard part 15 ′′ assigned to the support rollers.
  • the pivot axis 22 for the inner part 21 "of lower fender 21 is in turn formed on the front edge of the first part 21 ′ assigned to the support roller 12.
  • the pivotable part 21 ′′ of the lower mudguard 21 rests on a stop of the stand lower part 14 which is resiliently resilient in the event of overload, so that its distance from the strip B processed in the roll stand is fixed .
  • the pivotable part 15 ′′ of the mudguard 15 rests on a stop, also not shown, formed on the pivotable part 21 ′′ of the lower mudguard 21 or on the lower frame part 14. In this way, its distance from belt B is also fixed during processing. There is no contact between any of the rolls of the roll stand and the respective pivotable part 15 ′′, 21 ′′ of the mudguards 15, 21.
  • the work rolls 1, 2 are relieved of pressure.
  • the pivotable part 15 ′′ of the upper fender is then pivoted up until the support means 19 attached to it abut the upper work roll 1.
  • the upper mudguard not shown, in the outlet area of the roll stand.
  • the upper frame part 7 is raised, the work roll 1 now resting on the support means 19 of the mudguard 15 ′′ being carried along.
  • the pivotable part 21 '' of the lower fender 21 assigned to the inlet area E is pivoted upwards (position indicated by dashed lines in FIG. 3), so that the lower working shaft 2 is not damaged when the finished strip is threaded out and the new strip to be processed is threaded in becomes.
  • the movable part 21 '' of the lower mudguard 21 is pivoted down until it is on the lower stop of the Scaffold lower part 14 rests.
  • the roll gap which was previously open between the work rolls 1, 2 is then closed.
  • the pivotable part 15 ′′ of the upper fender 15 bears against the stop of the lower fender 21 or the lower frame part 14 assigned to it, so that the upper work roll 1 can again be freely rotated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Body Structure For Vehicles (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Metal Rolling (AREA)

Description

Die Erfindung betrifft ein Walzgerüst, insbesondere Vielwalzen-Walzgerüst, mit Schutzblechen, welche paarweise gegenüberliegend ober- und unterhalb des in dem Walzgerüst verarbeiteten Bandes im Ein- und Auslaufbereich des Walzgerüstes angeordnet sind und annähernd bis zu den jeweils von Stützwalzen und/oder -rollen gestützten Arbeitswalzen des Walzgerüstes in diesen hineinreichen, wobei die jeweils unteren Schutzbleche um eine achsparallel zu den Arbeitswalzen angeordnete Achse verschwenkbar mit dem Gerüstunterteil verbunden sind.The invention relates to a roll stand, in particular multi-roll roll stand, with mudguards, which are arranged in pairs opposite one another above and below the strip processed in the roll stand in the entry and exit area of the roll stand and approximately up to the respective supported by support rollers and / or rollers Work rolls of the roll stand extend into the latter, the lower protective plates in each case being pivotably connected to the lower stand part about an axis arranged parallel to the work rolls.

Die in Walzgerüsten eingesetzten Schutzbleche dienen zum Schutz der Stützwalzen gegen Beschädigungen, die beispielsweise durch Bandriß des in dem Walzgerüst verarbeiteten Bandes verursacht werden können, wenn die Bandenden plötzlich in Richtung der Walzen ausschlagen. Zusätzlich dient das untere Schutzbleche auch als Hilfsmittel zum Einfädeln eines neu zu bearbeitenden Bandes bzw. zum Ausfädeln eines fertig bearbeiteten Bandes, wobei gleichzeitig durch die Schutzbleche sichergestellt wird, daß die Arbeitswalzen des Walzgerüstes nicht beschädigt werden. Darüber hinaus weisen die Schutzbleche bei dem bekannten Walzgerüst Kanäle und Düsen auf, über die Kühlmittel auf das in dem Walzgerüst bearbeitete Bleche aufgebracht wird.The mudguards used in the roll stands serve to protect the support rolls against damage, which can be caused, for example, by tearing of the strip processed in the roll stand if the strip ends suddenly swing in the direction of the rolls. In addition, the lower mudguard also serves as an aid for threading a new strip to be machined or for threading out a finished strip, the mudguards simultaneously ensuring that the work rolls of the roll stand are not damaged. In addition, the mudguards in the known roll stand have channels and nozzles via which coolant is applied to the sheets processed in the roll stand.

Die vorstehend genannten Anforderungen machen es erforderlich, daß die Schutzbleche sowohl während des Ein- und Ausfädelns als auch in Arbeitsstellung des Walzgerüstes so nah wie möglich an die Arbeitswalzen heranreichen. Dies macht es wiederum erforderlich, die Stellung der Schutzbleche zu den Arbeitswalzen in Abhängigkeit von deren Größe veränderbar zu gestalten. Zu diesem Zweck sind bei einem aus der Praxis bekannten Vielwalzen-Walzgerüst (siehe EP-A 0513613) die jeweils oberen Schutzbleche horizontal verschiebbar ausgebildet, so daß sie je nach Größe der Arbeitswalzen in den Ein- bzw. Auslaufbereich des Walzgerüstes hineingeschoben werden können.The above requirements make it necessary for the fenders to come as close as possible to the work rolls both during threading and unthreading and in the working position of the roll stand. This in turn makes it necessary to make the position of the mudguards relative to the work rolls variable depending on their size. For this purpose, at a multi-roll mill stand known from practice (see EP-A 0513613), the respective upper fenders are horizontally displaceable, so that they can be pushed into the inlet or outlet area of the mill stand depending on the size of the work rolls.

Der Vorteil dieser Ausgestaltung der Schutzbleche besteht darin, daß diese im Falle eines Bandrisses wegen ihrer großflächigen Abstützung die vertikal ausschlagenden Bandenden sicher abfangen können. Ein Nachteil der bekannten Vorrichtung besteht jedoch darin, daß die oberen Schutzbleche bei Verwendung verschieden großer Arbeitswalzen einen ungleich großen Abstand zum Band haben, wobei bei großen Arbeitswalzen der Abstand der oberen Schutzbleche zu dem Band so groß werden kann, daß ihre Schutzwirkung vermindert wird. Ein weiterer Nachteil des bekannten Walzgerüstes besteht darin, daß bei ihm aufwendige Hubmittel erforderlich sind, um bei auffahrendem Gerüstoberteil, beispielsweise zum Wechseln des zu verarbeitenden Bandes, die obere, im Walzbetrieb ungehalterte Arbeitswalze mit anzuheben.The advantage of this design of the mudguards is that they can safely intercept the vertically deflecting band ends in the event of a band break due to their large-area support. A disadvantage of the known device, however, is that the upper fenders have an unequal distance from the belt when using differently sized work rolls, with large work rolls the distance of the upper fenders to the belt being so great that their protective effect is reduced. Another disadvantage of the known roll stand is that it requires complex lifting means to raise the upper work roll, which is not supported in the rolling operation, when the upper part of the stand is being opened, for example for changing the strip to be processed.

Die Aufgabe der Erfindung besteht darin, die Schutzwirkung der bei einem Walzgerüst der eingangs genannten Art eingesetzten Schutzbleche zu verbessern und gleichzeitig den Aufwand für die zum Anheben der Arbeitswalze benötigten Hubmittel zu vermindern.The object of the invention is to improve the protective effect of the fenders used in a roll stand of the type mentioned and at the same time to reduce the outlay for the lifting means required for lifting the work roll.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die jeweils oberen Schutzbleche um eine ebenfalls achsparallel zu den Arbeitswalzen angeordnete Achse verschwenkbar mit dem Gerüstoberteil verbunden sind und an ihrer den Arbeitswalzen zugeordneten Spitze jeweils Stützmittel aufweisen, die die obere Arbeitswalze bei in Richtung des Gerüstoberteils verschwenkten oberen Schutzblechen mitnehmen.This object is achieved in that the respective upper fenders are pivotally connected to the upper part of the scaffold about an axis which is also arranged parallel to the work rolls, and each have support means on their tip assigned to the work rolls, which support the upper work roll when the upper fenders are pivoted in the direction of the upper part of the frame take.

Die Verschwenkbarkeit auch des jeweils oberen Schutzbleches macht es bei dem erfindungsgemäßen Walzgerüst möglich, die jeweils unteren und oberen Schutzbleche in ihrem Schwenkwinkel so auszurichten, daß sie an ihren den Arbeitswalzen zugeordneten Enden den gleichen Abstand zu dem Band aufweisen. Dabei ist diese Einstellung des Abstandes der Schutzbleche unabhängig von der Größe der in dem Walzgerüst eingesetzten Arbeitswalzen.The pivotability of the respective upper fender makes it possible in the roll stand according to the invention to align the respective lower and upper fenders in their pivoting angle so that they have the same distance from the strip at their ends assigned to the work rolls. This setting of the distance between the fenders is independent of the size of the work rolls used in the roll stand.

Gleichzeitig schränkt die Verschwenkbarkeit der oberen Schutzbleche die Wirksamkeit der Schutzbleche nicht ein, da beispielsweise im Fall des bei Bandriss aufspringenden Bandendes das betroffene Schutzblech zur Anlage an den oberhalb von ihm angeordneten Walzen gebracht wird und auf diese Weise zusätzlich abgestützt wird. So ist bei einem erfindungsgemäß ausgestalteten Walzgerüst unabhängig von der Größe der in ihm eingesetzten Arbeitswalzen stets ein hohes Maß an Betriebssicherheit gewährleistet.At the same time, the pivotability of the upper mudguards does not limit the effectiveness of the mudguards, since, for example, in the case of the end of the belt that breaks open, the affected mudguard is brought into contact with the rollers arranged above it and is additionally supported in this way. In a roll stand designed according to the invention, a high degree of operational safety is always guaranteed regardless of the size of the work rolls used in it.

Da die Schutzbleche zudem an ihren den Arbeitswalzen zugeordneten Spitzen mit Stützmitteln ausgestattet sind, ist es möglich, die für das Verschwenken der Schutzbleche benötigten Antriebe gleichzeitig zum Anheben der Arbeitswalze bei geöffnetem Walzgerüst zu nutzen. Somit kann bei dem erfindungsgemäßen Walzgerüst auf die beim Stand der Technik benötigten zusätzlichen Hubmittel für das Anheben der Arbeitswalze verzichtet werden.Since the mudguards are also equipped with support means at their tips assigned to the work rolls, it is possible to use the drives required for pivoting the mudguards at the same time to lift the work roll when the roll stand is open. Thus, in the roll stand according to the invention, the additional lifting means for lifting the work roll required in the prior art can be dispensed with.

Die Vielseitigkeit der erfindungsgemäßen Vorrichtung kann dadurch noch gesteigert werden, daß die Schutzbleche jeweils in einen inneren, den Arbeitswalzen zugeordneten ersten Teil und einen äußeren Teil geteilt sind, wobei jeweils der innere Teil verschwenkbar und der äußere Teil fest mit dem jeweiligen Gerüstober- oder -unterteil verbunden ist. Durch diese Ausgestaltung ist es möglich, ohne eine Verminderung der Betriebssicherheit den Schwenkbereich und damit die Anpassungsfähigkeit der wesentlichen Teile der Schutzbleche zu vergrößern.The versatility of the device according to the invention can be further increased in that the mudguards are each divided into an inner part assigned to the work rolls and an outer part, the inner part being pivotable and the outer part being fixed to the respective upper or lower part of the frame connected is. This configuration makes it possible to increase the swivel range and thus the adaptability of the essential parts of the mudguards without reducing operational reliability.

Wie bei dem eingangs erörterten bekannten Walzgerüst können auch bei dem erfindungsgemäßen die Schutzbleche als Kühlbleche ausgebildet sein, welche Kanäle und Austrittsdüsen für ein auf das Band aufzubringendes Kühlmedium aufweisen.As with the known roll stand discussed at the outset, the mudguards in the case of the invention can also be designed as cooling plates which have channels and outlet nozzles for a cooling medium to be applied to the strip.

Da die oberhalb der oberen Schutzbleche angeordneten Walzen und Rollen im Falle einer Betriebsstörung durch Bandriss diese Schutzbleche abstützen, ist es sinnvoll, wenn die betreffenden Schutzbleche auf ihren den Stützwalzen und Rollen zugeordneten Seiten jeweils im Bereich der ihnen unmittelbar benachbarten Walzen oder Rollen Polsterstücke aufweisen, um in einem solchen Fall eine Beschädigung der Rollen oder Walzen auszuschließen. Dabei können diese Polsterstücke als Bronzeeinlagen ausgebildet sein.Since the rollers and rollers arranged above the upper mudguards support these mudguards in the event of a malfunction due to a tape tear, it makes sense for the mudguards in question to have cushion pieces on their sides assigned to the supporting rollers and rollers in the area of the rollers or rollers which are directly adjacent to them in such a case, damage to the rollers or rollers is excluded. These upholstery pieces can be designed as bronze inlays.

In ähnlicher Weise können auch die Stützmittel für die obere Arbeitswalze als Bronzestücke ausgebildet sein. Eine Verletzung der mit dem Band in Kontakt kommenden Oberfläche der Arbeitswalzen durch die Stützmittel kann zudem dadurch ausgeschlossen werden, daß die Stützmittel für die obere Arbeitswalze am äußeren seitlichen Rand der Schutzbleche angeordnet sind.Similarly, the support means for the upper work roll can be designed as bronze pieces. Injury to the surface of the work rolls coming into contact with the belt by the support means can also be excluded by arranging the support means for the upper work roll on the outer lateral edge of the mudguards.

Um auch bei den unteren Schutzblechen die Stützwirkung der unterhalb von diesen angeordneten Rollen oder Walzen ausnutzen zu können, sollten die unteren verschwenkbaren Schutzbleche in Arbeitsstellung des Walzgerüstes auf bei Überlast federnd nachgiebig gelagerten Anschlägen aufliegen. In diesem Fall sollten die unteren Schutzbleche wie die entsprechenden oberen Schutzbleche mit Polstereinlagen versehen sein, die im Störungsfall eine Beschädigung der betreffenden Stützwalzen verhindern.In order to be able to utilize the supporting effect of the rollers or rollers arranged underneath them, the lower pivotable fenders should rest on the stops which are resiliently resilient in the event of an overload in the working position of the roll stand. In this case, the lower mudguards, like the corresponding upper mudguards, should be provided with cushion inserts that prevent damage to the support rollers in question in the event of a malfunction.

Ein stets gleicher Abstand der den Arbeitswalzen zugeordneten Spitzen der Schutzbleche zum Band kann auf einfache Weise dadurch erreicht werden, daß das jeweils obere Schutzblech in Arbeitsstellung des Walzgerüstes auf einem Anschlag des ihm zugeordneten unteren Schutzbleches oder des Gerüstunterteils aufliegt.A constant distance between the tips of the mudguards associated with the work rolls and the strip can be achieved in a simple manner in that the respective upper mudguard is in the working position of the roll stand a stop of the associated lower mudguard or the lower part of the scaffold.

Nachfolgend wird die Erfindung anhand einer ein Ausführungsbeispiel zeigenden Zeichnung näher erläutert. Es zeigen ausschnittsweise

Fig. 1
einen Schnitt des Ein- und Auslaufbereichs eines Vielwalzen-Walzgerüstes in geöffneter Stellung mit großen Arbeitswalzen;
Fig. 2
das Walzgerüst gemäß Fig. 1 in geschlossener Stellung mit Arbeitswalzen, die einen gegenüber den Arbeitswalzen nach Fig. 1 kleineren Durchmesser aufweisen;
Fig. 3
das Walzgerüst nach Fig. 2 während des Einfädelns eines neuzubearbeitenden Bandes.
The invention is explained in more detail below with the aid of a drawing showing an exemplary embodiment. It shows sections
Fig. 1
a section of the inlet and outlet area of a multi-roll mill stand in the open position with large work rolls;
Fig. 2
1 in the closed position with work rolls which have a smaller diameter than the work rolls according to FIG. 1;
Fig. 3
2 during the threading of a new strip to be machined.

Bei dem in den Figuren gezeigten Vielwalzen-Walzgerüst ist eine obere Arbeitswalze 1 über Zwischenwalzen 2,2a,3,3a,4 und Stützwalzen 5,5a,6,6a abgestützt. Die Zwischenwalzen 2,2a,3,3a,4 und die Stützwalzen 5,5a,6,6a sind in einem Gerüstoberteil 7 und gemeinsam mit diesem höhenverstellbar gelagert. Dementsprechend ist eine untere Arbeitswalze 8 über Zwischenwalzen 9,9a,10,11,11a und Stützwalzen 12,12a,13,13a abgestützt. Die Zwischenwalzen 9,9a,10,11,11a und die Stützwalzen 12,12a,13,13a sind in einem Gerüstunterteil 14 gelagert. Innerhalb des Gerüstunterteils 14 sind die Zwischenwalzen 9,9a,10,11,11a und die Stützwalzen 12,12a,13,13a höhenverstellbar, um Arbeitswalzenpaare 1,8 unterschiedlichen Durchmessers in dem Walzgerüst einsetzen zu können. Auf diese Weise ist sichergestellt, daß das zu bearbeitende Band B stets unabhängig davon geradlinig durch das Walzgerüst geführt wird, welchen Durchmesser die Arbeitswalzen 1,8 aufweisen.In the multi-roll mill stand shown in the figures, an upper work roll 1 is supported by intermediate rolls 2,2a, 3,3a, 4 and support rolls 5,5a, 6,6a. The intermediate rolls 2,2a, 3,3a, 4 and the support rolls 5,5a, 6,6a are mounted in an upper part 7 of the stand and are adjustable in height together with the latter. Accordingly, a lower work roll 8 is supported via intermediate rolls 9, 9a, 10, 11, 11a and backup rolls 12, 12a, 13, 13a. The intermediate rolls 9, 9a, 10, 11, 11a and the support rolls 12, 12a, 13, 13a are supported in a lower frame part 14. The height of the intermediate rolls 9, 9a, 10, 11, 11a and the support rolls 12, 12a, 13, 13a can be adjusted within the lower frame part 14 in order to be able to use pairs of work rolls 1.8 of different diameters in the roll stand. In this way it is ensured that the strip B to be processed is always guided in a straight line through the roll stand regardless of the diameter of the work rolls 1.8.

Ein Vergleich der Figuren 1 und 3 macht dies deutlich, wobei in dem Walzgerüst nach Fig. 1 Arbeitswalzen 1,8 mit großem Durchmesser und bei dem Walzgerüst nach Fig. 3 Arbeitswalzen 1,8 mit kleinem Durchmesser eingesetzt sind.This is made clear by a comparison of FIGS. 1 and 3, work rolls 1.8 with a large diameter being used in the roll stand according to FIG. 1 and work rolls 1.8 with a small diameter being used in the roll stand according to FIG.

Im Ein- und Auslaufbereich E,A des Walzgerüstes ist ein als Kühlblech ausgebildetes oberes Schutzblech 15 angeordnet, das in einen unbeweglichen äußeren Teil 15' und einen mittels nicht gezeigter Hydraulikantriebe verschwenkbaren zweiten Teil 15'' geteilt ist. Der erste Teil 15' des Schutzblechs 15 ist dabei fest an dem Gerüstoberteil 7 befestigt. An seinem der Stützwalze 5 zugeordneten Ende ist ein Schwenkgelenk 16 für den verschwenkbaren Teil 15'' des oberen Schutzblechs ausgebildet. Beide Teile 15',15'' des Schutzbleches 15 weisen Kanäle 17 und Düsen 18 auf, über die ein Kühlmedium auf das in dem Walzgerüst verarbeitete Band B aufgebracht werden kann.Arranged in the inlet and outlet area E, A of the roll stand is an upper protective plate 15 designed as a cooling plate, which is divided into an immovable outer part 15 'and a second part 15' 'which can be pivoted by means of hydraulic drives (not shown). The first part 15 'of the fender 15 is firmly attached to the upper frame part 7. At its end assigned to the support roller 5, a pivot joint 16 is formed for the pivotable part 15 ″ of the upper fender. Both parts 15 ', 15' 'of the mudguard 15 have channels 17 and nozzles 18, via which a cooling medium can be applied to the strip B processed in the roll stand.

Beidseitig an den äußeren Seiten im Bereich der der oberen Arbeitswalze 1 zugeordneten Spitze des verschwenkbaren Schutzblechteils 15'' sind aus Bronze gefertigte Stützmittel 19 befestigt, über die die Arbeitswalze 1 bei der in Fig. 1 gezeigten geöffneten Stellung des Walzgerüstes in der angehobenen Stellung gehalten ist. Zudem sind jeweils gegenüberliegend zu der nächst benachbarten Stützwalze 5 bzw. Zwischenwalze 3 in die den Stützwalzen zugeordnete Seite des verschwenkbaren Schutzblechteiles 15'' Polsterstücke 20 eingelegt, die ebenfalls aus Bronze gefertigt sind.On both sides on the outer sides in the area of the tip of the pivotable mudguard part 15 '' assigned to the upper work roll 1, support means 19 made of bronze are fastened, via which the work roll 1 is held in the raised position in the open position of the roll stand shown in FIG. 1 . In addition, cushion pieces 20, which are also made of bronze, are inserted opposite the support roller 5 or intermediate roller 3 in the side of the pivotable mudguard part 15 ″ assigned to the support rollers.

Gegenüberliegend zu dem oberen Schutzblech 15 ist in dem Ein- und Auslaufbereich E,A des Walzgerüstes ein ebenfalls als Kühlblech ausgebildetes unteres Schutzblech 21 angeordnet, welches in einen feststehenden, mit dem Gerüstunterteil 14 fest verbundenen ersten Teil 21' und einen mittels eines ebenfalls nicht gezeigten Hydraulikantriebs verschwenkbaren zweiten Teil 21'' geteilt ist. Die Schwenkachse 22 für den inneren Teil 21'' des unteren Schutzbleches 21 ist wiederum an der der Stützrolle 12 zugeordneten vorderen Kante des ersten Teils 21' ausgebildet.Opposite to the upper fender 15, a lower fender 21, which is likewise designed as a cooling plate, is arranged in the inlet and outlet region E, A of the rolling stand, said lower fender 21 comprising a first part 21 'which is fixedly connected to the lower part 14 of the stand and a part which is also not shown Hydraulic drive pivotable second part 21 '' is divided. The pivot axis 22 for the inner part 21 "of lower fender 21 is in turn formed on the front edge of the first part 21 ′ assigned to the support roller 12.

Bei dem in Fig.2 gezeigten geschlossenen Zustand des Walzgerüstes liegt der schwenkbare Teil 21'' des unteren Schutzbleches 21 auf einem nicht gezeigten bei Überlast federnd nachgiebigen Anschlag des Gerüstunterteils 14 auf, so daß sein Abstand zu dem in dem Walzgerüst verarbeiteten Band B festgelegt ist. Gleichzeitig liegt der verschwenkbare Teil 15'' des Schutzblechs 15 auf einem ebenfalls nicht gezeigten, an dem verschwenkbaren Teil 21'' des unteren Schutzblechs 21 oder am Gerüstunterteil 14 angeformten Anschlag auf. Auf diese Weise ist auch sein Abstand zu dem Band B während der Bearbeitung festgelegt. Dabei besteht zwischen keiner der Walzen des Walzgerüstes und dem jeweiligen verschwenkbaren Teil 15'',21'' der Schutzbleche 15,21 ein Kontakt.In the closed state of the roll stand shown in FIG. 2, the pivotable part 21 ″ of the lower mudguard 21 rests on a stop of the stand lower part 14 which is resiliently resilient in the event of overload, so that its distance from the strip B processed in the roll stand is fixed . At the same time, the pivotable part 15 ″ of the mudguard 15 rests on a stop, also not shown, formed on the pivotable part 21 ″ of the lower mudguard 21 or on the lower frame part 14. In this way, its distance from belt B is also fixed during processing. There is no contact between any of the rolls of the roll stand and the respective pivotable part 15 ″, 21 ″ of the mudguards 15, 21.

Nach dem Walzende werden die Arbeitswalzen 1,2 druckentlastet. Anschließend wird der schwenkbare Teil 15'' des oberen Schutzbleches hochgeschwenkt, bis die an ihm befestigten Stütztmittel 19 an der oberen Arbeitswalze 1 anliegen. Gleiches geschieht mit dem nicht gezeigten oberen Schutzblech im Auslaufbereich des Walzgerüstes. Dann wird das Gerüstoberteil 7 angehoben, wobei die nun auf den Stützmitteln 19 des Schutzbleches 15'' aufliegende Arbeitswalze 1 mitgenommen wird. Anschließend wird das verschwenkbare Teil 21'' des unteren, dem Einlaufbereich E zugeordneten Schutzblechs 21 nach oben geschwenkt (gestrichelt angedeutete Stellung in Fig.3), damit beim Ausfädeln des fertig bearbeiteten und beim Einfädeln des neu zu bearbeitenden Bandes nicht die untere Arbeitswelle 2 beschädigt wird.After the end of the roll, the work rolls 1, 2 are relieved of pressure. The pivotable part 15 ″ of the upper fender is then pivoted up until the support means 19 attached to it abut the upper work roll 1. The same happens with the upper mudguard, not shown, in the outlet area of the roll stand. Then the upper frame part 7 is raised, the work roll 1 now resting on the support means 19 of the mudguard 15 ″ being carried along. Subsequently, the pivotable part 21 '' of the lower fender 21 assigned to the inlet area E is pivoted upwards (position indicated by dashed lines in FIG. 3), so that the lower working shaft 2 is not damaged when the finished strip is threaded out and the new strip to be processed is threaded in becomes.

Nach dem Einfädeln des neu zu bearbeitenden Bandes B wird das bewegliche Teil 21'' des unteren Schutzbleches 21 nach unten geschwenkt bis es auf dem unteren Anschlag des Gerüstunterteiles 14 aufliegt. Durch Absenken des Gerüstoberteiles 7 wird dann der zwischen den Arbeitswalzen 1,2 zuvor noch geöffnete Walzspalt geschlossen. Dabei legt sich der verschwenkbare Teil 15'' des oberen Schutzblechs 15 gegen den ihm zugeordneten Anschlag des unteren Schutzblechs 21 oder des Gerüstunterteils 14 an, so daß die obere Arbeitswalze 1 wieder frei drehbar ist.After threading the new band B to be machined, the movable part 21 '' of the lower mudguard 21 is pivoted down until it is on the lower stop of the Scaffold lower part 14 rests. By lowering the upper frame part 7, the roll gap which was previously open between the work rolls 1, 2 is then closed. The pivotable part 15 ″ of the upper fender 15 bears against the stop of the lower fender 21 or the lower frame part 14 assigned to it, so that the upper work roll 1 can again be freely rotated.

Claims (9)

  1. A rolling stand, more particularly a cluster rolling stand, having protective plates (15, 21) which are disposed oppositely in pairs in the entry zone (E) and the outlet zone (A) of the rolling stand above and below the strip (B) processed therein and extend as far as substantially into the stand working rolls (1, 8), which are each supported by support rolls (2-6a, 9-13a), each of the lower protective plates (21) being connected pivotably around a pivot (22) disposed axis-parallel with the working rolls (1, 8) to the lower part (14) of the stand, characterized in that the upper protective plates (15) are connected pivotably around a pivot (16) also disposed axis-parallel with the working rolls (1, 8) to the vertically adjustable upper part (7) of the stand and have at their tip associated with the working rolls (1, 8) supporting means (19) which entrain the upper working roll (1) when the upper protective plates (15) are pivoted in the direction of the upper part (7) of the stand.
  2. A rolling stand according to claim 1, characterized in that the protective plates (15, 21) are divided into an inner part (15'', 21'') associated with the working rolls (1, 8) and an outer part (15', 21'), the inner part (15'', 21'') being connected pivotably and the outer part (15', 21') rigidly to the upper part (7) or the lower part (14) of the stand respectively.
  3. A rolling stand according to claims 1 or 2, characterized in that the protective plates (15, 21) take the form of cooling plates which have channels (17) and discharge nozzles (18) for a cooling medium to be applied to the strip (B).
  4. A rolling stand according to one of claims 1 to 3, characterized in that the protective plates (15'', 21'') have cushioning members (20) on their sides associated with the support rolls (2-6, 9-13) in the zone of the rolls (3, 3a, 5, 5a, 11, 11a, 12, 12a) disposed immediately adjacent thereto.
  5. A rolling stand according to claim 4, characterized in that the cushioning members (20) take the form of bronze inserts.
  6. A rolling stand according to one of the preceding claims, characterized in that the supporting means (19) for the upper working roll (1) are disposed at the outer lateral edge of the protective plates (15).
  7. A rolling stand according to one of the preceding claims, characterized in that the supporting means (19) for the upper working roll (1) are disposed at the outer lateral edge of the protective plates (15).
  8. A rolling stand according to one of the preceding claims, characterized in that in the working position of the rolling stand the lower pivotable protective plates (21) are borne on stops which yield under overloading.
  9. A rolling stand according to one of the preceding claims, characterized in that in the working position of the rolling stand the upper protective plate (15) bears against a stop of the lower protective plate (21) associated therewith or a stop of the lower part (14) of the stand.
EP95100645A 1994-02-28 1995-01-19 Rolling stand Expired - Lifetime EP0669172B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4406454A DE4406454C1 (en) 1994-02-28 1994-02-28 Roll stand with loosely mounted work rolls
DE4406454 1994-02-28

Publications (2)

Publication Number Publication Date
EP0669172A1 EP0669172A1 (en) 1995-08-30
EP0669172B1 true EP0669172B1 (en) 1997-10-22

Family

ID=6511386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100645A Expired - Lifetime EP0669172B1 (en) 1994-02-28 1995-01-19 Rolling stand

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US (1) US5558017A (en)
EP (1) EP0669172B1 (en)
JP (1) JP3792744B2 (en)
DE (2) DE4406454C1 (en)
ES (1) ES2107867T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013009695A1 (en) * 2013-06-03 2014-12-04 Sms Siemag Ag Spray bar adjustment for a multi-roll mill

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Publication number Priority date Publication date Assignee Title
DE19752524C2 (en) 1997-11-27 2000-05-18 Adolf Seide Smoothing unit for a web of thermoplastic material
DE10027866B4 (en) * 2000-06-06 2005-03-24 Keiper Gmbh & Co. Kg Seat height adjuster drive for a vehicle seat
EP2676744A1 (en) 2012-06-22 2013-12-25 Siemens VAI Metals Technologies GmbH Device for sprinkling a rolling plant and method for extracting/inserting said system from/in said rolling cage

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US2353288A (en) * 1940-08-03 1944-07-11 Crucible Steel Co America Apparatus for rolling strip metal
DE811831C (en) * 1948-10-02 1951-08-23 Sack Gmbh Maschf Spray device on rolling mills
GB948165A (en) * 1959-12-03 1964-01-29 Davy & United Eng Co Ltd Improvements in or relating to rolling mills
BE634026A (en) * 1962-06-26
US4039107A (en) * 1975-11-12 1977-08-02 Boley Robert E Roller entry guide having improved guide insert and roller adjustment means
SU576131A1 (en) * 1976-05-19 1977-10-15 Предприятие П/Я А-7697 Stock-guiding device for multi-roll mill
JPS58125310A (en) * 1982-01-18 1983-07-26 Kobe Steel Ltd Guiding device of strip in multiple rolling mill
JPS58125311A (en) * 1982-01-18 1983-07-26 Kobe Steel Ltd Guiding device of strip in multiple rolling mill
JPS60221114A (en) * 1984-03-30 1985-11-05 Kobe Steel Ltd Strip guide in multi-stage rolling mill
JPS6142407A (en) * 1984-08-02 1986-02-28 Hitachi Ltd Roll changer for multi-stage rolling mill
DE3934087C1 (en) * 1989-10-12 1991-02-07 Nordischer Maschinenbau Rud. Baader Gmbh + Co Kg, 2400 Luebeck, De
DE3939124A1 (en) * 1989-11-25 1991-05-29 Sundwiger Eisen Maschinen MULTI-ROLLER ROD WITH HYDRAULIC EMPLOYMENT
DE4116019C2 (en) * 1991-05-16 1997-01-23 Sundwiger Eisen Maschinen Method and device for cooling a flat material, in particular a metal strip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013009695A1 (en) * 2013-06-03 2014-12-04 Sms Siemag Ag Spray bar adjustment for a multi-roll mill

Also Published As

Publication number Publication date
JP3792744B2 (en) 2006-07-05
DE4406454C1 (en) 1995-08-24
DE59500820D1 (en) 1997-11-27
ES2107867T3 (en) 1997-12-01
EP0669172A1 (en) 1995-08-30
JPH0833903A (en) 1996-02-06
US5558017A (en) 1996-09-24

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