EP0429812B1 - Cluster mill with hydraulic adjustment - Google Patents

Cluster mill with hydraulic adjustment Download PDF

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Publication number
EP0429812B1
EP0429812B1 EP90119485A EP90119485A EP0429812B1 EP 0429812 B1 EP0429812 B1 EP 0429812B1 EP 90119485 A EP90119485 A EP 90119485A EP 90119485 A EP90119485 A EP 90119485A EP 0429812 B1 EP0429812 B1 EP 0429812B1
Authority
EP
European Patent Office
Prior art keywords
piston
column
hydraulic
rolling
down system
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
EP90119485A
Other languages
German (de)
French (fr)
Other versions
EP0429812A3 (en
EP0429812A2 (en
Inventor
Bernd Dr.-Ing. Berger
Peter Reinthal
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
Application filed by Sundwiger Eisenhuette Maschinenfabrik GmbH and Co filed Critical Sundwiger Eisenhuette Maschinenfabrik GmbH and Co
Publication of EP0429812A2 publication Critical patent/EP0429812A2/en
Publication of EP0429812A3 publication Critical patent/EP0429812A3/en
Application granted granted Critical
Publication of EP0429812B1 publication Critical patent/EP0429812B1/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
    • 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
    • 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
    • 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
    • B21B2203/36—Spacers
    • 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
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/04—Rolling stand frames or housings; Roll mountings ; Roll chocks with tie rods in frameless stands, e.g. prestressed tie rods

Definitions

  • the invention relates to a multi-roll stand with a lower part receiving the lower roller set, an upper part receiving the upper roller set and four columns arranged between the lower part and the upper part, in particular anchored in the lower part, on which the upper part is guided and on each of which a hydraulic adjustment is supported for the rolling force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Press Drives And Press Lines (AREA)

Description

Die Erfindung bezieht sich auf ein Vielwalzengerüst mit einem den unteren Walzensatz aufnehmenden Unterteil, einem den oberen Walzensatz aufnehmenden Oberteil und vier zwischen dem Unterteil und dem Oberteil angeordneten, insbesondere im Unterteil verankerten Säulen, auf denen das Oberteil geführt ist und an denen jeweils eine hydraulische Anstellung für die Walzkraft abgestützt ist.The invention relates to a multi-roll stand with a lower part receiving the lower roller set, an upper part receiving the upper roller set and four columns arranged between the lower part and the upper part, in particular anchored in the lower part, on which the upper part is guided and on each of which a hydraulic adjustment is supported for the rolling force.

Bei einem bekannten Vielwalzengerüst dieser Art (DE-GM 84 03 103) trägt jede Säule einen auf ihr fixierten doppelseitig beaufschlagbaren Kolben. Durch Beaufschlagung der Kolben ist es zum einen möglich, den Oberteil anzuheben und abzusenken, und zum anderen, die gewünschte Walzkraft aufzubringen. Die Auslegung des maximalen Hubes der Zylinderkolbeneinheiten richtet sich nach dem abzudeckenden Bereich der Dicke des Walzgutes. Das bedeutet, daß bei dickem Walzgut die freie Höhe des Zylinderraums der Zylinderkolbeneinheiten, in dem hydraulischer Druck für die Walzkraft ansteht, klein ist, während sie bei dünnem Walzgut groß ist. Eine große Höhe des Zylinderraums ist aber für das Walzen ungünstig, weil wegen des großen Volumens des Zylinderraums bei großen Walzkräften das Oberteil elastisch nachgibt. Deshalb ist man bestrebt, den Zylinderraum in seiner Höhe möglichst klein zu halten. Kleine Höhen schränken aber nicht nur den Dickenbereich des Walzgutes ein, sondern sind auch nachteilig beim Einführen des Walzgutes in den Walzspalt und anderen Arbeiten, für die eine möglichst große Durchgangsöffnung im Walzengerüst von Vorteil ist.In a known multi-roll stand of this type (DE-GM 84 03 103), each column carries a piston which can be acted upon on both sides. By acting on the pistons, it is possible on the one hand to raise and lower the upper part, and on the other hand to apply the desired rolling force. The design of the maximum stroke of the cylinder-piston units depends on the range of the thickness of the rolling stock to be covered. This means that with thick rolling stock the free height of the cylinder space of the cylinder-piston units, in which hydraulic pressure is applied to the rolling force, is small, whereas it is large with thin rolling stock. A large height of the cylinder space is unfavorable for rolling, because the upper part yields elastically due to the large volume of the cylinder space with large rolling forces. That is why efforts are being made to keep the height of the cylinder space as small as possible. Small heights not only restrict the thickness range of the rolling stock, they are also disadvantageous when introducing the rolling stock into the roll gap and other work for which the largest possible through opening in the roll stand is advantageous.

Des weiteren ist es bekannt, hydraulische und mechanische Anstellvorrichtungen zu kombinieren, wobei die Kolben auf einer mittels eines Stellgliedes axial verstellbaren Gewindespindel axial fixiert werden können (DE-A 2 726 140, GB-A 1 316 580). Bei diesen bekannten Walzgerüsten wird die für den Walzbetrieb erforderliche Starrheit ausschließlich innerhalb der mechanischen Anstellvorrichtung, also der Verbindung zwischen Gewindespindel und Kolben erreicht. Solche Walzgerüste verlangen einen großen konstruktiven Aufwand.Furthermore, it is known to combine hydraulic and mechanical adjusting devices, the pistons being able to be axially fixed on a threaded spindle which is axially adjustable by means of an actuator (DE-A 2 726 140, GB-A 1 316 580). In these known rolling stands, the rigidity required for the rolling operation is achieved exclusively within the mechanical adjusting device, that is to say the connection between the threaded spindle and the piston. Such rolling stands require a great deal of design effort.

Der Erfindung liegt die Aufgabe zugrunde, ein Vielwalzengerüst mit einfachem Aufbau zu schaffen, dessen Walzensätze einerseits weit auseinandergefahren werden können und dessen hydraulische Anstellung andererseits im Walzbetrieb möglichst starr ist.The invention has for its object to provide a multi-roll stand with a simple structure, the roller sets on the one hand can be moved far apart and the hydraulic adjustment is as rigid as possible on the other hand in rolling operation.

Diese Aufgabe wird erfindungsgemäß bei einem Vielwalzengerüst der eingangs genannten Art dadurch gelöst, daß jeder Säule eine von der hydraulischen Anstellung für die Walzkraft unabhängige, zwischen dem Unterteil und dem Oberteil wirksame Hubvorrichtung zugeordnet ist, daß jede hydraulische Anstellung einen in Hubrichtung verstellbaren doppelseitig beaufschlagbaren Kolben aufweist, der in einer vorgegebenen Position durch Beaufschlagung der für die Anstellung nicht benötigten Seite des Kolbens über einen Ansatz des Kolbens an einem Anschlag der Säule mit dieser axial fixierbar ist, und zwischen dem und dem Boden seines vom Oberteil getragenen Zylindergehäuses der hydraulische Druck für die Walzkraft aufbaubar ist.This object is achieved in a multi-roll stand of the type mentioned in that each column is assigned a lifting device which is independent of the hydraulic adjustment for the rolling force and is effective between the lower part and the upper part, and that each hydraulic adjustment has a piston which can be acted upon on both sides and which is adjustable in the stroke direction , which is axially fixable in a predetermined position by acting on the side of the piston which is not required for the employment via an attachment of the piston to a stop of the column, and between the and the bottom of its cylinder housing carried by the upper part the hydraulic pressure for the rolling force is buildable.

Durch die Trennung zwischen den für die Anstellung der Walzkraft benötigten Teilen und den für das Auseinanderfahren der Walzensätze benötigten Teile ist es möglich, zum einen das Walzengerüst weit zu öffnen, damit problemlos ein Bandanfang eingefädelt werden oder bei Bandrissen Schrott leicht entfernt werden kann oder ein Walzenwechsel leicht durchgeführt werden kann, und zum anderen für einen großen Einstellbereich des erforderlichen Walzenspaltes eine kleine Höhe des für die hydraulische Anstellung vorgesehenen wirksamen Zylinderraums zu erhalten.Due to the separation between the parts required for the adjustment of the rolling force and the parts required for moving the roller sets apart, it is possible, on the one hand, to open the roll stand widely easily start a belt or scrap can easily be removed if the belt breaks or a roll change can be carried out easily, and on the other hand to maintain a small height of the effective cylinder space provided for the hydraulic adjustment for a large adjustment range of the required roll gap.

Für die Anstellung auf verschiedene Walzenspalte können zwischen dem Anschlag und dem Kolben Distanz- bzw. Verstellelemente eingesetzt werden.For the adjustment to different roll gaps, spacer or adjustment elements can be used between the stop and the piston.

Im folgenden wird die Erfindung anhand einer ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Im einzelnen zeigen:

Figur 1
ein Vielwalzengerüst mit auseinandergefahrenen Walzensätzen in Seitenansicht mit einem axialen Teilschnitt u n d
Figur 2
das Vielwalzengerüst gemäß Figur 1 mit zusammengefahrenen Walzensätzen während des Walzbetriebes.
The invention is explained in more detail below with the aid of a drawing representing an exemplary embodiment. In detail show:
Figure 1
a multi-roll stand with extended roller sets in side view with an axial partial section and
Figure 2
the multi-roll stand according to FIG. 1 with the roller sets moved together during the rolling operation.

Das Vielwalzengerüst besteht aus einem Unterteil 1 und einem Oberteil 2, die jeweils einen Walzensatz 3,4 aufnehmen, und aus zwei Paar Säulen 5,6 zu beiden Seiten des Gerüstes. Jeder Säule 5,6 ist eine hydraulische Anstellung 10 zugeordnet. Zwischen dem Unterteil 1 und dem Oberteil 2 ist jeder Säule 5,6 eine hydraulische oder mechanisch wirkende Hubvorrichtung 11,12 zugeordnet. Mittels dieser Hubvorrichtung 11,12 lassen sich durch Anhebung des Oberteils 2 die Walzensätze 3,4 auseinanderfahren, wie in Figur 1 dargestellt ist.The multi-roll stand consists of a lower part 1 and an upper part 2, each receiving a set of rolls 3, 4, and two pairs of columns 5, 6 on either side of the stand. A hydraulic adjustment 10 is assigned to each column 5, 6. A hydraulic or mechanical lifting device 11, 12 is assigned to each column 5, 6 between the lower part 1 and the upper part 2. By means of this lifting device 11, 12, the roller sets 3, 4 can be moved apart by lifting the upper part 2, as shown in FIG.

Die Säule 6 trägt eine auf ihr fixierte kleinere Säule 6', die ihrerseits einen auf ihr fixierten Kolben 19 trägt. Auf der kleineren Säule 6' ist außerdem ein doppelseitig beaufschlagbarer Kolben 20 axial verschiebbar angeordnet. Die Säule 6' mit ihren beiden Kolben 19,20 befindet sich in einem Zylindergehäuse 21, das vom Oberteil 2 getragen ist. Der Kolben 20 weist auf seiner Unterseite einen hülsenförmigen Ansatz 22 auf, mit dem er aus dem Zylindergehäuse 21 herausragt.The column 6 carries a smaller column 6 'fixed on it, which in turn carries a piston 19 fixed on it. On the smaller column 6 ', a piston 20 which can be acted on from both sides is also arranged to be axially displaceable. The column 6 'with its two pistons 19, 20 is located in a cylinder housing 21 which is carried by the upper part 2. The piston 20 has on its underside a sleeve-shaped extension 22 with which it protrudes from the cylinder housing 21.

Um das Oberteil aus der in Figur 1 dargestellten Position, in der der hülsenförmige Ansatz 22 mit seiner dem Kolben 20 abgewandten Stirnseite von der Stufe der Säule 6 abgehoben hat, in die Position der Figur 2 zu überführen, werden die Hubvorrichtungen 11,12 betätigt. Zur Einstellung des Walzdruckes wird der oberhalb des Kolbens 20 liegende Zylinderraum mit einem vergleichsweise hohen Druck beaufschlagt. Der Kolben 20 mit seinem hülsenförmigen Ansatz 22 stößt dabei an dem Anschlag der Säule 6 an und wird auf diese Weise axial fixiert. In der anderen Richtung ist er durch das im muß unter Berücksichtigung der aufzubringen Walzkraft so sein, daß die Säule 18 mit dem Kolben 19 und der Kolben 20 praktisch eine starre Einheit bilden. Um die Anstellung der Walzkraft vorzunehmen, wird in den Zylinderraum an der Unterseite des Kolbens 20 Druckmittel eingelassen. Der Druck dieses Druckmittels ist im Vergleich zu dem Druck des im darüberliegenden Zylinderraum anstehenden Druckmittels gering. Trotz dieses geringeren Druckes ist die Anstellung starr, weil die Höhe des Zylinderraums unterhalb des Kolbens 20 klein ist.In order to transfer the upper part from the position shown in FIG. 1, in which the sleeve-shaped extension 22, with its end face remote from the piston 20, has lifted off the step of the column 6, into the position in FIG. 2, the lifting devices 11, 12 are actuated. In order to adjust the rolling pressure, the cylinder space above the piston 20 is subjected to a comparatively high pressure. The piston 20 with its sleeve-shaped extension 22 abuts the stop of the column 6 and is axially fixed in this way. In the other direction, it has to be such that, taking into account the rolling force to be applied, the column 18 with the piston 19 and the piston 20 practically form a rigid unit. In order to adjust the rolling force, 20 pressure medium is let into the cylinder space on the underside of the piston. The pressure of this pressure medium is low in comparison to the pressure of the pressure medium present in the cylinder chamber above. Despite this lower pressure, the adjustment is rigid because the height of the cylinder space below the piston 20 is small.

Um den Walzspalt auf unterschiedliche Höhen einzustellen, können zwischen dem hülsenförmigen Ansatz 22 des Kolbens 20 und dem Anschlag der Säule 6 Distanzelemente, zum Beispiel in Form von Ringen eingesetzt werden.In order to adjust the roll gap to different heights, 6 spacer elements, for example in the form of rings, can be used between the sleeve-shaped extension 22 of the piston 20 and the stop of the column 6.

Claims (2)

  1. A cluster mill having a lower part (1) receiving the lower set of rolls (3), an upper part (2) receiving the upper set of rolls (4), and four columns (5,6) which are disposed between the lower part (1) and the upper part (2) and are anchored more particularly in the lower part (1) and on which the upper part (2) is guided and against each of which a hydraulic screw-down system (20,21) for the roll force bears, characterized in that associated with each column (5,6) is a lifting device (11,12) independent of the hydraulic screw-down system (20,21) and operative between the lower part (1) and the upper part (2), each hydraulic screw-down system (20,21) having a piston (20) acted upon on both sides which can be axially fixed to the column (6) in a given position by acting upon the side of the piston (20) not required for the screw-down system by an attachment (22) of the piston (20) on a stop of the column (5,6) and between which and the bottom of its cylinder casing (21) borne via the upper part (2) the hydraulic pressure for the roll force can be built up.
  2. A cluster mill according to claim 1, characterized in that spacing and adjusting elements can be inserted between the stop of the column (6) and the attachment (22) of the piston (20).
EP90119485A 1989-11-25 1990-10-11 Cluster mill with hydraulic adjustment Expired - Lifetime EP0429812B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3939124A DE3939124A1 (en) 1989-11-25 1989-11-25 MULTI-ROLLER ROD WITH HYDRAULIC EMPLOYMENT
DE3939124 1989-11-25

Publications (3)

Publication Number Publication Date
EP0429812A2 EP0429812A2 (en) 1991-06-05
EP0429812A3 EP0429812A3 (en) 1991-12-11
EP0429812B1 true EP0429812B1 (en) 1993-12-15

Family

ID=6394242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90119485A Expired - Lifetime EP0429812B1 (en) 1989-11-25 1990-10-11 Cluster mill with hydraulic adjustment

Country Status (6)

Country Link
US (1) US5142896A (en)
EP (1) EP0429812B1 (en)
JP (1) JPH03169406A (en)
DE (2) DE3939124A1 (en)
ES (1) ES2049387T3 (en)
RU (1) RU1809788C (en)

Families Citing this family (17)

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Publication number Priority date Publication date Assignee Title
JP2966187B2 (en) * 1991-08-14 1999-10-25 株式会社神戸製鋼所 Rolling mill
DE4218138A1 (en) * 1992-06-02 1993-12-09 Schloemann Siemag Ag Roller adjustment device
DE4406454C1 (en) * 1994-02-28 1995-08-24 Sundwiger Eisen Maschinen Roll stand with loosely mounted work rolls
US5596899A (en) * 1994-07-22 1997-01-28 T. Sendzimir, Inc. Mill housings for cluster mills
KR100207067B1 (en) * 1996-05-18 1999-07-01 지원국 Electro-heating type metal strip roller
US5857372A (en) * 1997-02-06 1999-01-12 T. Sendzimir, Inc. Housing for cluster mills
GB9820787D0 (en) * 1998-09-25 1998-11-18 Kvaerner Metals Davy Ltd Roll position control in cluster mills
AT407614B (en) * 1999-03-01 2001-05-25 Voest Alpine Ind Anlagen METHOD FOR CONTROLLING A LONG-LIFTED, HYDRAULIC ACTUATING CYLINDER
DE19946561C1 (en) * 1999-09-29 2001-04-26 Sundwig Gmbh Roll stand for rolling strips
US6209377B1 (en) 2000-02-16 2001-04-03 Morgan Construction Company Housingless roll stand
US20040055351A1 (en) * 2002-09-18 2004-03-25 Lonero Vincent J. Multi roll and alignment system for deep rolling
US7765844B2 (en) * 2007-12-20 2010-08-03 Intergrated Industrial Systems, Inc. Prestressed rolling mill housing assembly with improved operational features
DE102009060640A1 (en) * 2009-07-07 2011-01-13 Sms Siemag Ag Cluster arm arrangement for the intermediate roll sets of 18 HS rolling stands
JP5613399B2 (en) * 2009-11-05 2014-10-22 三菱日立製鉄機械株式会社 Cluster type multi-high rolling mill
US9003854B2 (en) 2011-06-16 2015-04-14 I2S, Llc Split housing cluster mill designed for temper and cold rolling
CN109500092B (en) * 2018-12-06 2020-05-08 中冶南方工程技术有限公司 Eighteen-roller mill working roller lifting device
EP3950161B8 (en) * 2019-04-04 2024-02-21 Sendzimir Japan, Ltd. Multistage rolling mill and method for replacing divisional backing bearing assembly shaft in multistage rolling mill

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GB948165A (en) * 1959-12-03 1964-01-29 Davy & United Eng Co Ltd Improvements in or relating to rolling mills
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DE1902555A1 (en) * 1969-01-20 1970-08-13 Siemag Siegener Maschb Gmbh Rolling mill stand with hydraulically loaded - mechanical roll space adjuster
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Also Published As

Publication number Publication date
DE3939124C2 (en) 1992-04-23
DE59003882D1 (en) 1994-01-27
US5142896A (en) 1992-09-01
ES2049387T3 (en) 1994-04-16
EP0429812A3 (en) 1991-12-11
EP0429812A2 (en) 1991-06-05
DE3939124A1 (en) 1991-05-29
RU1809788C (en) 1993-04-15
JPH03169406A (en) 1991-07-23

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