EP0326805B1 - Roll stand with a shifting device - Google Patents

Roll stand with a shifting device Download PDF

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Publication number
EP0326805B1
EP0326805B1 EP89100189A EP89100189A EP0326805B1 EP 0326805 B1 EP0326805 B1 EP 0326805B1 EP 89100189 A EP89100189 A EP 89100189A EP 89100189 A EP89100189 A EP 89100189A EP 0326805 B1 EP0326805 B1 EP 0326805B1
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EP
European Patent Office
Prior art keywords
roll stand
displacing
rolls
roll
chock
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
EP89100189A
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German (de)
French (fr)
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EP0326805A2 (en
EP0326805A3 (en
Inventor
Wolfgang Hackenberg
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SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
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Publication date
Application filed by SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT89100189T priority Critical patent/ATE80070T1/en
Publication of EP0326805A2 publication Critical patent/EP0326805A2/en
Publication of EP0326805A3 publication Critical patent/EP0326805A3/en
Application granted granted Critical
Publication of EP0326805B1 publication Critical patent/EP0326805B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16Adjusting or positioning rolls
    • B21B31/18Adjusting or positioning rolls by moving rolls axially

Definitions

  • the invention relates to a roll stand with at least one shifting device for axially shifting the rolls, in particular the work rolls, the rolls being stored and secured in chocks and the chocks in the roll stands being guided in a vertically sliding manner in the direction of the rolling force and thrust blocks leading horizontally in the direction of the roll axis have, on which the stand-supported displacement devices attack from the operator side.
  • a roll stand with two work rolls, two intermediate rolls and two backup rolls and with a device for axially displacing the intermediate rolls is known.
  • the rolls are mounted in chocks, the chocks being slidably guided in the roll stand in the direction of the rolling force.
  • the intermediate rolls, together with their chocks, can be axially displaced by hydraulic piston-cylinder units acting in the direction of the roll axis.
  • Two axially outwardly projecting arms are provided on one of the chocks of each intermediate roller; on each of these arms the extendable part engages a piston-cylinder unit by means of a connecting member.
  • the two piston-cylinder units are arranged in the roll stand on the side next to the respective chock.
  • a device for axially displacing the work rolls of a roll stand is known.
  • the work rolls are equipped with thrust blocks that can be moved horizontally in blocks that are fixed to the stand.
  • the push blocks the upper work roll and the push blocks of the lower work roll are mechanically connected in such a way that a drive pinion engages in a rack which is arranged on the push block of the upper work roll and engages in a further rack which is arranged on the push block of the lower work roll.
  • the drive pinion is actuated by a power drive. In this way it is possible that both the upper work roll and the lower work roll can be adjusted in opposite directions by the same displacement paths by means of a single power drive. The maximum displacement for the work rolls is not too great, however, even with this known displacement device.
  • a device for the axial displacement of the work rolls consisting of a combination of one or more hydraulic cylinders with a mechanical self-locking adjusting device.
  • the adjusting device contains a self-locking threaded ring, which is connected to the push rod of the hydraulic cylinder via further construction elements.
  • the object of the invention is to provide a displacement device for rollers in a roll stand, which allows larger displacement paths for the rollers than before with a compact construction and does not disadvantageously restrict the space on the operator side of the roll stand.
  • the displacement device is connected to the thrust block and the chock via a gear arrangement which translates the adjustment path of the shifting device and acts without slippage, the thrust block and the chock each having at least one toothed rack arranged opposite one another and at least one with between the toothed racks the toothed rack engaging pinion is arranged, the pinion axis of which is connected to the displacement device.
  • This design concept allows the adjustment paths of the displacement device to be reduced several times, while at the same time achieving a large predetermined displacement stroke on the work roll.
  • an extremely compact mechanical construction of the displacement device is possible, so that the space on the operator side of the roll stand can be used to the extent necessary up to now, for example for a quick change of the rolls.
  • toothed racks and pinions for example, halves the adjustment path of the displacement device and halves the adjustment forces. Furthermore, an additional locking of the adjusting device or the thrust block is not required - except when changing the roller - since the toothing of the rack / pinion / rack are always in engagement.
  • the displacement device is connected to the chock receiving the horizontally displaceable thrust block. This ensures that, seen in the vertical, the displacement device cannot move relative to the thrust piece.
  • Pinions and racks therefore always remain in optimally load-bearing tooth engagement, even if the rollers are worn down to a smaller diameter during operation, the adjustment forces exerted by the adjusting devices are designed by the rack / pinion gear on the thrust block and thus on the rollers transfer.
  • the displacement device consists of a double-acting piston-cylinder unit known per se, the reversibly movable piston shaft of which is connected to a thrust sleeve carrying the pinions.
  • the piston is fastened in this way to the displaceable sleeve, which in turn expediently carries a pair of gearwheels on the side, which now meshes on the one hand with the fixed rack fixed on the chock and on the other hand meshes with the rack which is located on the thrust piece. If the hydraulic piston and thus the thrust sleeve moves back and forth, then the pair of gears undergoes a rotational movement and at the same time a horizontal relative movement through the thrust sleeve.
  • the thrust sleeve of the displacement device expediently comprises the piston-cylinder unit in a sliding manner, so that the piston-cylinder unit is at the same time a guide unit for the thrust sleeve, the pinions advantageously being mounted on the outer jacket of the thrust sleeve.
  • the sprockets can fly be mounted, with each pinion sitting on a separate bearing pin arranged on the thrust sleeve.
  • the pinions can also be mounted in a bearing block comprising both pinions, which in turn is connected to the thrust sleeve.
  • FIG. 1 shows section A of a roll stand 1 shown schematically in FIG. 4 with a displacement device 2 for displacing the work roll 3.
  • the work roll 3 is mounted radially in the thrust block 4 by means of the bearing 5 and is axially secured.
  • the thrust block 4 is horizontally conductively connected to the chock 6.
  • the sliding guide between the thrust block 4 and the chock 6 is taken over by two sliding rails 7, 8, each on the opposite side of the thrust block 4 or on the chock 6 are attached (Fig. 3).
  • the vertical load and rolling forces are absorbed by the slide rails 7, 8.
  • the chock 6 has a bending block 11 in which e.g. Pressurized bending punches 12 are arranged for balancing and bending the rolls.
  • On the bending block 11 on the vertical contact surface facing the thrust block 4 further sliding or wear slats 13, 14 e.g. arranged from bronze-containing materials.
  • the bending block 11 is extended and carries the displacement device 2, so that the displacement device forms a fixed unit with the chock receiving the horizontally displaceable push block 4.
  • the displacement device 2 is connected to the thrust block 4 via a gear arrangement 15 which translates the adjustment path of the displacement device, preferably without slippage.
  • the displacement device 2 consists of a double-acting piston-cylinder unit 21 known per se, the piston shaft 22 of which can be reversibly moved as a result of the cylinder spaces 22, 23 acting twice with any pressure medium is and the piston shaft is connected to a thrust sleeve 24.
  • the pinions 18, 19 are overhung on the outer jacket 25 of the thrust sleeve 24.
  • the thrust sleeve 24 comprises the piston-cylinder unit 21 and is secured against rotation by means of a securing bolt 26.
  • a displacement measuring system 27 is arranged on the thrust sleeve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

For the axial shifting of the rolls in a roll stand, in particular the work rolls, by means of shifting devices, it is proposed to shift the rolls, which are mounted and secured in thrust blocks held in a manner which allows horizontal shifting, from the operator side using shifting devices of particularly compact construction. For the purpose of shifting, a gear arrangement acting without slip is arranged between the shifting device and the thrust block. <IMAGE>

Description

Die Erfindung betrifft ein Walzgerüst mit wenigstens einer Verschiebeeinrichtung zum axialen Verschieben der Walzen, insbesondere der Arbeitswalzen, wobei die Walzen in Einbaustücken gelagert und gesichert sind und die Einbaustücke in den Walzgerüständern in Richtung der Walzkraft vertikal gleitend geführt sind und in Richtung der Walzenachse horizontal führende Schubblöcke aufweisen, an denen die ständerabgestützten Verschiebeeinrichtungen von der Bedienerseite angreifen.The invention relates to a roll stand with at least one shifting device for axially shifting the rolls, in particular the work rolls, the rolls being stored and secured in chocks and the chocks in the roll stands being guided in a vertically sliding manner in the direction of the rolling force and thrust blocks leading horizontally in the direction of the roll axis have, on which the stand-supported displacement devices attack from the operator side.

Es ist bekannt, daß zur Verbesserung der Ebenheit des Walzgutes und zur besseren Dickenkonstanz der Walzgutbreite die Walzen im Walzgerüst verschieblich gehalten werden, wozu Stelleinrichtungen an der sogenannten Bedienerseite des Walzgerüstes angeordnet sind, mit deren Hilfe die Walzen horizontal verschoben werden. In jüngster Zeit tendieren die Anforderungen an die Qualität des Walzgutes immer mehr zu großen Verschiebewegen.It is known that in order to improve the flatness of the rolling stock and for better thickness constancy of the rolling stock width, the rolls in the roll stand are kept displaceable, for which purpose adjusting devices are arranged on the so-called operator side of the roll stand, with the aid of which the rolls are moved horizontally. In recent times, the demands placed on the quality of the rolling stock have increasingly tended to be large displacement paths.

Aus der DE-A-2 440 495 ist ein Walzgerüst mit zwei Arbeitswalzen, zwei Zwischenwalzen und zwei Stützwalzen sowie mit einer Einrichtung zum axialen Verschieben der Zwischenwalzen bekannt. Bei diesem Walzgerüst sind die Walzen in Einbaustücken gelagert, wobei die Einbaustücke in den Walzgerüstständern in Richtung der Walzkraft gleitend geführt sind. Die Zwischenwalzen sind zusammen mit ihren Einbaustücken durch in Richtung der Walzenachse wirkende hydraulische Kolben-Zylinder-Einheiten axial verschiebbar. An einem der Einbaustücke jeder Zwischenwalze sind zwei axial nach außen vorstehende Arme vorgesehen; an jedem dieser Arme greift der ausfahrbare Teil je einer Kolben-Zylinder-Einheit mittels eines Verbindungsgliedes an. Die beiden Kolben-Zylinder-Einheiten sind in den Walzgerüstständern seitlich neben dem jeweiligen Einbaustück angeordnet. Mit dieser bekannten Konstruktion einer Verschiebeeinrichtung für die Walzen können allenfalls kleine Stellwege gefahren werden, da bei größeren Verschiebungen der Walzen entsprechend große Hübe der hydraulisch wirkenden Kolben-Zylinder-Einheit vorgesehen werden müssen. Dies hat u.a. den Nachteil, daß entsprechend lange Stellzylinder in die Bedienerseite am Walzgerüst hineinragen und den erforderlichen Raum für den notwendigen Wechsel und die Wartung der Walzen einengen. Hieraus resultierend müßte bei einem Walzenwechsel der Walzensatz weiter herausgezogen werden, z.B. beim side shifting. Das hätte längere Walzenausfahrzylinder zur Folge oder sogar den Einsatz von teuren, kompliziert arbeitenden Teleskopzylindern.From DE-A-2 440 495 a roll stand with two work rolls, two intermediate rolls and two backup rolls and with a device for axially displacing the intermediate rolls is known. In this roll stand, the rolls are mounted in chocks, the chocks being slidably guided in the roll stand in the direction of the rolling force. The intermediate rolls, together with their chocks, can be axially displaced by hydraulic piston-cylinder units acting in the direction of the roll axis. Two axially outwardly projecting arms are provided on one of the chocks of each intermediate roller; on each of these arms the extendable part engages a piston-cylinder unit by means of a connecting member. The two piston-cylinder units are arranged in the roll stand on the side next to the respective chock. With this known construction of a displacement device for the rollers, at most small adjustment paths can be traveled, since correspondingly large strokes of the hydraulically acting piston-cylinder unit must be provided for larger displacements of the rollers. This has among other things the disadvantage that correspondingly long actuating cylinders protrude into the operator's side on the roll stand and restrict the space required for the necessary change and maintenance of the rolls. As a result, the roll set would have to be pulled out further when changing the rolls, e.g. with side shifting. This would result in longer roller extension cylinders or even the use of expensive, complicated telescopic cylinders.

Aus der EP-A-0 231 875 ist eine Einrichtung zum axialen Verschieben der Arbeitswalzen eines Walzgerüsts bekannt. Die Arbeitswalzen sind mit Schubblöcken versehen, die jeweils in ständerfesten Blöcken horizontal verschiebbar sind. Die Schubblöcke der oberen Arbeitswalze und die Schubblöcke der unteren Arbeitswalze sind mechanisch in der Weise zwangsverbunden, daß ein Antriebsritzel in eine Zahnstange eingreift, die an dem Schubblock der oberen Arbeitswalze angeordnet ist und in eine weitere Zahnstange eingreift, die am Schubblock der unteren Arbeitswalze angeordnet ist. Das Antriebsritzel wird von einem Kraftantrieb betätigt. Auf diese Weise wird ermöglicht, daß mittels eines einzigen Kraftantriebs sowohl die obere Arbeitswalze als auch die untere Arbeitswalze gegensinnig um gleiche Verschiebewege verstellbar sind. Der maximale Verschiebeweg für die Arbeitswalzen ist allerdings auch bei dieser bekannten Verschiebeeinrichtung nicht allzu groß.From EP-A-0 231 875 a device for axially displacing the work rolls of a roll stand is known. The work rolls are equipped with thrust blocks that can be moved horizontally in blocks that are fixed to the stand. The push blocks the upper work roll and the push blocks of the lower work roll are mechanically connected in such a way that a drive pinion engages in a rack which is arranged on the push block of the upper work roll and engages in a further rack which is arranged on the push block of the lower work roll. The drive pinion is actuated by a power drive. In this way it is possible that both the upper work roll and the lower work roll can be adjusted in opposite directions by the same displacement paths by means of a single power drive. The maximum displacement for the work rolls is not too great, however, even with this known displacement device.

Aus der DE-A-2 646 898 ist eine Vorrichtung zur axialen Verschiebung der Arbeitswalzen bekannt, bestehend aus einer Kombination eines oder mehrerer Hydraulikzylinder mit einer mechanischen selbsthemmenden Verstelleinrichtung. Die Verstelleinrichtung enthält einen selbsthemmenden Gewindering, der über weitere Konstruktionselemente mit der Schubstange des Hydraulikzylinders verbunden ist. Durch Kombination der hydraulischen mit der mechanischen Verstellung soll die trägheitslose Anstellung der Walzen während des laufenden Walzbetriebes ermöglicht bleiben und mit der Selbsthemmung der Verstellmechanik soll ein selbsttätiges axiales Verstellen der Walzen während des Betriebes ausgeschaltet werden; auch sollen axiale Kräfte mechanisch abgefangen werden, so daß die hydraulischen Anstellzylinder nicht ständig mit Druck beaufschlagt sein müssen.From DE-A-2 646 898 a device for the axial displacement of the work rolls is known, consisting of a combination of one or more hydraulic cylinders with a mechanical self-locking adjusting device. The adjusting device contains a self-locking threaded ring, which is connected to the push rod of the hydraulic cylinder via further construction elements. By combining the hydraulic with the mechanical adjustment, the inertia-free adjustment of the rollers should remain possible during the rolling operation and with the self-locking of the adjustment mechanism, an automatic axial adjustment of the rollers should be switched off during operation; axial forces should also be intercepted mechanically, so that the hydraulic jacks do not have to be constantly pressurized.

Aufgabe der Erfindung ist es, eine Verschiebeeinrichtung für Walzen in einem Walzgerüst zu schaffen, die bei kompakter Konstruktion größere Verschiebewege für die Walzen als bisher zuläßt und den Raum an der Bedienerseite des Walzgerüstes nicht nachteilig einengt.The object of the invention is to provide a displacement device for rollers in a roll stand, which allows larger displacement paths for the rollers than before with a compact construction and does not disadvantageously restrict the space on the operator side of the roll stand.

Diese Aufgabe wird dadurch gelöst, daß die Verschiebeeinrichtung über eine den Verstellweg der Verschiebeeinrichtung übersetzende und schlupflos wirkende Getriebeanordnung mit dem Schubblock und dem Einbaustück verbunden ist, wobei der Schubblock und das Einbaustück jeweils mindestens eine gegenüber angeordnete Zahnstange aufweisen, und zwischen den Zahnstangen mindestens ein mit den Zahnstangen in Eingriff stehendes Ritzel angeordnet ist, dessen Ritzelachse mit der Verschiebeeinrichtung in Verbindung steht. Dieses konstruktive Konzept erlaubt die gegebenenfalls mehrfache Reduzierung der Verstellwege der Verschiebeeinrichtung bei gleichzeitiger Erzielung eines großen vorgegebenen Verschiebehubes an der Arbeitswalze. Hierdurch ist eine äußerst kompakt bauende Mechanik der Verschiebeeinrichtung möglich, so daß der Raum an der Bedienerseite des Walzgerüstes in dem bisher notwendigen Umfang genutzt werden kann, bspw. zu einem schnellen Wechsel der Walzen. Durch die vorgeschlagene Anordnung von Zahnstangen und Ritzel wird bspw. eine Halbierung des Verstellweges der Verschiebeeinrichtung und eine Halbierung der Verstellkräfte erreicht. Ferner ist eine zusätzliche Verriegelung der Verstelleinrichtung oder des Schubblocks nicht erforderlich - außer beim Walzenwechsel - da die Verzahnungen von Zahnstange/Ritzel/Zahn stange stets im Eingriff sind. Zweckmäßig ist hierbei, daß die Verschiebeeinrichtung mit dem, den horizontal verschieblichen Schubblock aufnehmenden Einbaustück verbunden ist. Hierdurch ist sichergestellt, daß die Verschiebeinrichtung in der Vertikalen gesehen keine Relativbewegung zum Schubstück einnehmen kann. Ritzel und Zahnstangen bleiben also immer im optimal tragenden Zahneingriff, auch wenn die Walzen im Laufe des Betriebs auf einen kleineren Durchmesser abgetragen sein sollten, werden die von der Verstelleinrichtungen ausgeübten Verstellkräfte von dem Zahnstangen / Ritzel-Getriebe auslegungsgemäß auf den Schubblock und damit auf die Walzen übertragen.This object is achieved in that the displacement device is connected to the thrust block and the chock via a gear arrangement which translates the adjustment path of the shifting device and acts without slippage, the thrust block and the chock each having at least one toothed rack arranged opposite one another and at least one with between the toothed racks the toothed rack engaging pinion is arranged, the pinion axis of which is connected to the displacement device. This design concept allows the adjustment paths of the displacement device to be reduced several times, while at the same time achieving a large predetermined displacement stroke on the work roll. As a result, an extremely compact mechanical construction of the displacement device is possible, so that the space on the operator side of the roll stand can be used to the extent necessary up to now, for example for a quick change of the rolls. The proposed arrangement of toothed racks and pinions, for example, halves the adjustment path of the displacement device and halves the adjustment forces. Furthermore, an additional locking of the adjusting device or the thrust block is not required - except when changing the roller - since the toothing of the rack / pinion / rack are always in engagement. Is expedient here that the displacement device is connected to the chock receiving the horizontally displaceable thrust block. This ensures that, seen in the vertical, the displacement device cannot move relative to the thrust piece. Pinions and racks therefore always remain in optimally load-bearing tooth engagement, even if the rollers are worn down to a smaller diameter during operation, the adjustment forces exerted by the adjusting devices are designed by the rack / pinion gear on the thrust block and thus on the rollers transfer.

In weiterer Ausgestaltung der Erfindung wird vorgeschlagen, daß die Verschiebeeinrichtung aus einer an sich bekannten doppeltwirkenden Kolben-Zylinder-Einheit besteht, dessen reversierbar beweglicher Kolbenschaft mit einer die Ritzel tragenden Schubhülse verbunden ist. Der Kolben ist auf diese Weise an der verschieblichen Hülse befestigt, die ihrerseits zweckmäßigerweise seitlich ein Zahnräderpaar trägt, welches nun einerseits mit der ortsfesten am Einbaustück befestigten Zahnstange kämmt und andererseits mit der Zahnstange kämmt, die sich am Schubstück befindet. Bewegt sich nun der Hydraulikkolben und damit die Schubhülse vor bzw. zurück, dann erfährt das Zahnräderpaar eine Drehbewegung und gleichzeitig eine horizontale Relativbewegung durch die Schubhülse. Hieraus folgt ein doppelt so großer Hub für das Schubstück gemessen an dem Verstellweg des Hydraulikkolbens. Zweckmäßigerweise umfaßt die Schubhülse der Verschiebeeinrichtung die Kolben-Zylinder-Einheit gleitend, so daß die Kolben-Zylinder-Einheit zugleich Führungseinheit für die Schubhülse ist wobei vorteilhafterweise die Ritzel am Außenmantel der Schubhülse gelagert sind. Die Ritzel können fliegend gelagert sein, wobei jedes Ritzel auf einem separaten an der Schubhülse angeordneten Lagerzapfen sitzt. Die Ritzel können auch in einem beide Ritzel umfassenden Lagerbock gelagert sein, der seinerseits mit der Schubhülse verbunden ist.In a further embodiment of the invention it is proposed that the displacement device consists of a double-acting piston-cylinder unit known per se, the reversibly movable piston shaft of which is connected to a thrust sleeve carrying the pinions. The piston is fastened in this way to the displaceable sleeve, which in turn expediently carries a pair of gearwheels on the side, which now meshes on the one hand with the fixed rack fixed on the chock and on the other hand meshes with the rack which is located on the thrust piece. If the hydraulic piston and thus the thrust sleeve moves back and forth, then the pair of gears undergoes a rotational movement and at the same time a horizontal relative movement through the thrust sleeve. This results in a stroke twice as large for the thrust piece measured on the adjustment path of the hydraulic piston. The thrust sleeve of the displacement device expediently comprises the piston-cylinder unit in a sliding manner, so that the piston-cylinder unit is at the same time a guide unit for the thrust sleeve, the pinions advantageously being mounted on the outer jacket of the thrust sleeve. The sprockets can fly be mounted, with each pinion sitting on a separate bearing pin arranged on the thrust sleeve. The pinions can also be mounted in a bearing block comprising both pinions, which in turn is connected to the thrust sleeve.

Die Erfindung wird anhand eines Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1
eine Draufsicht auf einen Ausschnitt eines Walzgerüstes mit einer in einem Einbaustück gelagerten Walze und mit auf der Bedienerseite angeordneter Verstelleinrichtung, teilweise im Schnitt,
Figur 2
eine Ausicht eines Ausschnitts der Ritzelanordnung zwischen Einbaustück und Schubstück.
Figur 3
eine Ansicht der Verstelleinrichtung auf der Bedienerseite des Walzgerüstes, in Wechselstellung der Arbeitswalzen.
Figur 4
ein Walzgerüst mit ausgefahrenen Arbeitswalzen in schematischer Darstellung.
The invention is explained in more detail using an exemplary embodiment. Show it:
Figure 1
1 shows a plan view of a section of a roll stand with a roller mounted in a chock and with an adjusting device arranged on the operator side, partly in section,
Figure 2
a view of a section of the pinion arrangement between the chock and thrust piece.
Figure 3
a view of the adjustment device on the operator side of the roll stand, in the changing position of the work rolls.
Figure 4
a roll stand with extended work rolls in a schematic representation.

Fig. 1 zeigt den Ausschnitt A eines in Fig. 4 schematisch dargestellten Walzgerüstes 1 mit einer Verschiebeeinrichtung 2 zum Verschieben der Arbeitswalze 3. Die Arbeitswalze 3 ist in dem Schubblock 4 mittels des lagers 5 radial gelagert und axial gesichert. Der Schubblock 4 ist mit dem Einbaustück 6 horizontal leitend verbunden. Die Gleitführung zwischen Schubblock 4 und Einbaustück 6 wird von zwei Gleitschienen 7, 8 übernommen, die jeweils gegenüberliegend am Schubblock 4 bzw. am Einbaustück 6 angebracht sind (Fig. 3). Von den Gleitschienen 7, 8 werden die in der Vertikalen wirkenden Last- und Walzkräfte aufgenommen.1 shows section A of a roll stand 1 shown schematically in FIG. 4 with a displacement device 2 for displacing the work roll 3. The work roll 3 is mounted radially in the thrust block 4 by means of the bearing 5 and is axially secured. The thrust block 4 is horizontally conductively connected to the chock 6. The sliding guide between the thrust block 4 and the chock 6 is taken over by two sliding rails 7, 8, each on the opposite side of the thrust block 4 or on the chock 6 are attached (Fig. 3). The vertical load and rolling forces are absorbed by the slide rails 7, 8.

Das Einbaustück 6 ist gemäß Fig. 1 in dem Walzgerüstständer 9 in Richtung der Walzkraft vertikal geführt und horizontal gesichert durch den Führungsblock 10, der Walzgerüstständer 9 und Einbaustück 6 formschlüssig verbindet. Das Einbaustück 6 weist einen Biegeblock 11 auf, in dem z.B. Druckmittel beaufschlagte Biegestempel 12 zum Ausbalancieren und Biegen der Walzen angeordnet sind. Am Biegeblock 11 sind auf der zum Schubblock 4 gewandten vertikalen Berührungsfläche weitere Gleit- bzw. Verschleißlatten 13, 14 z.B. aus bronzehaltigen Materialien angeordnet. Zur Bedienerseite des Walzgerüstes 1 ist der Biegeblock 11 verlängert und trägt die Verschiebeeinrichtung 2, so daß die Verschiebeeinrichtung mit dem den horizontal verschieblichen Schubblock 4 aufnehmenden Einbaustück eine feste Einheit bildet. Die Verschiebeeinrichtung 2 ist über eine den Verstellweg der Verschiebeeinrichtung übersetzende, vorzugsweise schlupflos wirkende Getriebeanordnung 15 mit dem Schubblock 4 verbunden.1 is vertically guided in the roll stand 9 in the direction of the rolling force and secured horizontally by the guide block 10 which connects the roll stand 9 and the insert 6 in a form-fitting manner. The chock 6 has a bending block 11 in which e.g. Pressurized bending punches 12 are arranged for balancing and bending the rolls. On the bending block 11 on the vertical contact surface facing the thrust block 4 further sliding or wear slats 13, 14 e.g. arranged from bronze-containing materials. To the operator side of the roll stand 1, the bending block 11 is extended and carries the displacement device 2, so that the displacement device forms a fixed unit with the chock receiving the horizontally displaceable push block 4. The displacement device 2 is connected to the thrust block 4 via a gear arrangement 15 which translates the adjustment path of the displacement device, preferably without slippage.

Fig. 2 und 3 zeigen, daß der Schubblock 4 und das Einbaustück 6 mit Biegeblock 11 jeweils eine Zahnstange 16 , 17 aufweisen, und daß zwischen den Zahnstangen zwei mit den Zahnstangen im Eingriff stehende Ritzel 18, 19 angeordnet sind, deren zugeordnete Ritzelachse 20 mit der Verschiebeeinrichtung 2 in Verbindung stehen. Die Verschiebeeinrichtung 2 besteht gemäß Fig. 1 aus einer an sich bekannten doppelt wirkenden Kolben-Zylinder-Einheit 21, deren Kolbenschaft 22 infolge der mit beliebigen Druckmitteln doppelt beaufschlagten Zylinderräume 22, 23 reversierbar beweglich ist und dessen Kolbenschaft mit einer Schubhülse 24 verbunden ist. Am Außenmantel 25 der Schubhülse 24 sind die Ritzel 18, 19 fliegend gelagert. Zum Zweck der gleitenden Führung umfaßt die Schubhülse 24 die Kolben-Zylinder-Einheit 21 und ist mit einem Sicherungsbolzen 26 gegen Verdrehen gesichert. Ferner ist an der Schubhülse ein Wegmeßsystem 27 angeordnet.2 and 3 show that the thrust block 4 and the chock 6 with bending block 11 each have a toothed rack 16, 17, and that between the toothed racks two pinions 18, 19 which are in engagement with the toothed racks are arranged, the associated pinion axis 20 of which the displacement device 2 are connected. 1, the displacement device 2 consists of a double-acting piston-cylinder unit 21 known per se, the piston shaft 22 of which can be reversibly moved as a result of the cylinder spaces 22, 23 acting twice with any pressure medium is and the piston shaft is connected to a thrust sleeve 24. The pinions 18, 19 are overhung on the outer jacket 25 of the thrust sleeve 24. For the purpose of sliding guidance, the thrust sleeve 24 comprises the piston-cylinder unit 21 and is secured against rotation by means of a securing bolt 26. Furthermore, a displacement measuring system 27 is arranged on the thrust sleeve.

Wird nun der Zylinderraum 22 der Kolben-Zylinder-Einheit 21 mit einem Druckmittel beaufschlagt, so wird der Kolbenschaft 20 und damit die Schubhülse 24 zur Bedienerseite hin bewegt. Die Ritzel 18, 19 stützen sich während des Verstellvorganges der Schubhülse an der an dem Biegeblock 11 bzw. dem Einbaustück 6 fest angeordneten Zahnstange 17 ab und drehen gleichzeitig um die von der Schubhülse 24 horizontal bewegten Ritzelachsen 20. Infolge des Zahneingriffs der Ritzel 18, 19 mit der an dem horizontal beweglichen Schubblock 4 angeordneten Zahnstange 16 erfährt der Schubblock einen Verschiebeweg, der doppelt so groß ist wie der von der Verschiebeeinrichtung 2 bewirkte Verstellweg. Der permanente Eingriff der Zahnstangen 16, 17 mit den Ritzeln 18, 19 sichert den Schubblock gegen jede weitere unbeabsichtigte Horizontalverschiebung. Die schlupflos wirkende aus Ritzeln und Zahnstangen bestehende Getriebeanordnung zwischen der Verschiebeeinrichtung und dem Schubblock bewirkt also einerseits eine Übersetzung des Verstellweges der Verschiebeeinrichtung und sichert gleichzeitig die jeweilig vorbestimmte Position der in dem Schubblock gelagerten Arbeitswalze.If a pressure medium is now applied to the cylinder space 22 of the piston-cylinder unit 21, the piston shaft 20 and thus the thrust sleeve 24 are moved toward the operator side. The pinions 18, 19 are supported during the adjustment process of the thrust sleeve on the rack 17 fixedly arranged on the bending block 11 or the chock 6 and simultaneously rotate about the pinion axes 20 horizontally moved by the thrust sleeve 24. As a result of the tooth engagement of the pinions 18, 19 with the rack 16 arranged on the horizontally movable push block 4, the push block experiences a displacement path that is twice as large as the adjustment path caused by the displacement device 2. The permanent engagement of the racks 16, 17 with the pinions 18, 19 secures the thrust block against any further unintentional horizontal displacement. The slip-free gear arrangement consisting of pinions and racks between the displacement device and the thrust block thus on the one hand effects a translation of the displacement path of the displacement device and at the same time secures the respectively predetermined position of the work roll mounted in the thrust block.

Claims (4)

  1. Roll stand with at least one displacing equipment (2) for the axial displacing of the rolls, in particular of the work rolls (3), wherein the rolls are mounted and secured in chocks (6), which in a given case have bending blocks (11), and the chocks are guided in the roll stand stands (9) to be vertically slidable in direction of the rolling force and have drive blocks (4), which are horizontally guided in direction of the roll axis and at which displacing equipments engage from the operator side (A), characterised thereby, that the displacing equipment (2) is connected with the drive block (4) and the chock (6), each with a respective roll, by way of a steplessly acting gear arrangement (15) translating the displacement travel of the displacing equipment, wherein the drive block (4) and the chock (6) each have at least one oppositely arranged rack (16, 17), and arranged between the racks is at least one pinion (18, 19), which stands in engagement with the racks and the pinion axis (20) of which stands in connection with the displacing equipment (2).
  2. Roll stand according to claim 1 or 2, characterised thereby, that the displacing equipment (2) is fixedly connected with the chock (6) receiving the horizontally displaceable drive block (4).
  3. Roll stand according to at least one of the claims 1 to 3, characterised thereby, that the displacing equipment (2) consists of an in itself known double-acting piston-cylinder unit (21), the reversibly movable piston rod (2) of which is connected with a drive sleeve (24) carrying the pinion (18, 19).
  4. Roll stand according to at least one of the claims 1 to 4, characterised thereby, that the drive sleeve (24) of the displacing equipment (2) slidingly surrounds the piston-cylinder unit (21) and that the pinions (18, 19) are mounted at the outer casing (25) of the drive sleeve.
EP89100189A 1988-01-30 1989-01-07 Roll stand with a shifting device Expired - Lifetime EP0326805B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89100189T ATE80070T1 (en) 1988-01-30 1989-01-07 ROLLING DEVICE WITH SHIFT DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3802813A DE3802813A1 (en) 1988-01-30 1988-01-30 ROLLING MILLS WITH SLIDING DEVICE
DE3802813 1988-01-30

Publications (3)

Publication Number Publication Date
EP0326805A2 EP0326805A2 (en) 1989-08-09
EP0326805A3 EP0326805A3 (en) 1990-05-02
EP0326805B1 true EP0326805B1 (en) 1992-09-02

Family

ID=6346338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100189A Expired - Lifetime EP0326805B1 (en) 1988-01-30 1989-01-07 Roll stand with a shifting device

Country Status (4)

Country Link
US (1) US4959987A (en)
EP (1) EP0326805B1 (en)
AT (1) ATE80070T1 (en)
DE (2) DE3802813A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007042896A1 (en) 2007-03-15 2008-09-18 Sms Demag Ag rolling device
DE202014010279U1 (en) 2014-12-17 2015-04-08 Achenbach Buschhütten GmbH & Co. KG Roll stand with displacement device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2279023B (en) * 1993-04-27 1996-06-05 Ward Building Systems Ltd Rolling mill

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Publication number Priority date Publication date Assignee Title
US3943742A (en) * 1973-08-24 1976-03-16 Hitachi, Ltd. Rolling mill
DD122484A1 (en) * 1975-11-06 1976-10-12
US4154074A (en) * 1978-02-27 1979-05-15 Morgan Construction Company Roll stand for a rod or bar rolling mill
US4191042A (en) * 1978-08-03 1980-03-04 Morgan Construction Company Heavy duty axial adjustment mechanism for rolling mill rolls
US4248074A (en) * 1979-04-20 1981-02-03 Schloemann-Siemag, Inc. Axial roll adjustment for a rolling mill
FR2547216A1 (en) * 1983-06-10 1984-12-14 Sacilor IMPROVED MANUFACTURING AND AXIAL ADJUSTMENT DEVICE FOR HORIZONTAL CYLINDERS OF ROLLER CAGE WITH PROFILES
DE3601239A1 (en) * 1986-01-17 1987-07-23 Schloemann Siemag Ag Bending device for the axially displaceable working rolls of a four-high stand
DE3603693A1 (en) * 1986-02-06 1987-08-13 Schloemann Siemag Ag DEVICE FOR AXIAL SLIDING OF THE WORK ROLLS OF A ROLLING DEVICE FOR ROLLING FLAT MATERIAL
JPH063516A (en) * 1992-06-18 1994-01-14 Toppan Printing Co Ltd Production of color filter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007042896A1 (en) 2007-03-15 2008-09-18 Sms Demag Ag rolling device
DE202014010279U1 (en) 2014-12-17 2015-04-08 Achenbach Buschhütten GmbH & Co. KG Roll stand with displacement device
EP3034187A1 (en) 2014-12-17 2016-06-22 Achenbach Buschhütten GmbH & Co. KG Rolling mill stand with shifting device
DE102014226326A1 (en) 2014-12-17 2016-06-23 Achenbach Buschhütten GmbH & Co. KG Roll stand with displacement device
DE102014226326B4 (en) * 2014-12-17 2017-06-08 Achenbach Buschhütten GmbH & Co. KG Roll stand with displacement device

Also Published As

Publication number Publication date
ATE80070T1 (en) 1992-09-15
DE58902167D1 (en) 1992-10-08
DE3802813A1 (en) 1989-08-03
US4959987A (en) 1990-10-02
EP0326805A2 (en) 1989-08-09
EP0326805A3 (en) 1990-05-02

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