EP1026316A2 - Calender for web materials like paper - Google Patents

Calender for web materials like paper Download PDF

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Publication number
EP1026316A2
EP1026316A2 EP00100896A EP00100896A EP1026316A2 EP 1026316 A2 EP1026316 A2 EP 1026316A2 EP 00100896 A EP00100896 A EP 00100896A EP 00100896 A EP00100896 A EP 00100896A EP 1026316 A2 EP1026316 A2 EP 1026316A2
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EP
European Patent Office
Prior art keywords
roller
center
levers
calender according
rollers
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.)
Granted
Application number
EP00100896A
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German (de)
French (fr)
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EP1026316A3 (en
EP1026316B1 (en
Inventor
Gottfried Hendrix
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
Voith Sulzer Papiertechnik Patent GmbH
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.)
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Application filed by Voith Paper Patent GmbH, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1026316A2 publication Critical patent/EP1026316A2/en
Publication of EP1026316A3 publication Critical patent/EP1026316A3/en
Application granted granted Critical
Publication of EP1026316B1 publication Critical patent/EP1026316B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/002—Opening or closing mechanisms; Regulating the pressure

Definitions

  • the invention relates to a calender for web-shaped Materials, such as paper, with a stand and a roll stack, the one lower roll, one upper roll and at least one intermediate roller arranged between them having.
  • Such a calender is known from DE 30 04 913 C2.
  • the rollers are arranged in a vertical stack.
  • the top and bottom rollers are bending adjustment rollers with jacket lift.
  • the lower roller is on a hydraulic cylinder supported, which together with the jacket stroke of Lower roller has a sufficiently large lowering path for cutting the rolls result from each other. With this lowering movement the stops of the individual rollers come one after the other on adjusting nuts of hanging spindles for support, which means that the individual roll nips in succession and after going through a correspondingly large one Are separated from each other.
  • the invention has for its object a calender of the type described in the introduction, in which the separation of the rollers can be done particularly quickly.
  • At least one middle roller for the purpose of roller separation relative to the neighboring roller in an approximately perpendicular to the stacking plane transverse direction is displaceable.
  • the bottom roller for the purpose of roller separation lowerable in the stacking level and the bottom middle roller is transversely displaceable. Because of this lowering the center roller can make its transverse movement even faster To run.
  • Another advantage is that the lowering movement the bottom roller can be kept very low, whereby the size can be significantly reduced.
  • the stacking plane is horizontal is inclined and the at least one transversely displaceable Center roll obliquely down from the stacking level is movable. Due to the inclination of the stacking level is both the lower roller to be lowered and the at least one transversely displaceable center roll by one Force component in the desired direction of movement loaded so that the opening of the nips takes place even more quickly goes.
  • the at least one Transversely displaceable center roll through hydraulic cylinders is relocatable.
  • the bearings of the least a cross-shiftable center roller of levers are carried, which can be pivoted about pivot axes on the stand are and that the bearings relative to the levers or the levers relative to the pivot axes or the pivot axes relative to the stand by the hydraulic cylinders are adjustable.
  • the bearings relative to the levers or the levers relative to the pivot axes or the pivot axes relative to the stand by the hydraulic cylinders are adjustable.
  • At least one is expediently displaceable transversely Middle roller a hard roller.
  • the soft rollers that have to be changed frequently during operation then slightly from the free side of the stack accessible.
  • top middle roller is stably mounted.
  • the top roller can then pass through Lifting simultaneously with lowering or moving sideways the remaining rollers from the roller underneath be separated.
  • At least a center roller is carried by levers that move around Swivel axes on the stand are pivotable and that the Lever stops are assigned to the lowering movement stop the center roller.
  • the opening width of the Nips is therefore determined by the swivel paths of the levers and - in the case of the cross-shiftable center rollers - through the cross shift.
  • bottom middle roller is transversely displaceable and that the lower roller also is transversely shiftable to a single work nip to form with roller nips open otherwise.
  • Man can therefore use the same calender for calendering (using all roller nips) and for matting (using only the lowest gap).
  • the calender illustrated in Fig. 1 has one Stand 1 on a floor 2 and a raised Podium 3 is supported. Has a roll stack 4 eight rollers 5 to 12, whose center lines in a stacking plane 13 lie at an angle of about 45 ° runs to the horizontal.
  • the top roller 5 is a bending adjustment roller with a rotatably held on the stand 1 support 14, on the a roller jacket with limited stroke via hydraulic Supports.
  • the top middle roller 6 is a hard roller. Your camp 15 is fixedly mounted on the stand 1.
  • center rolls 7 and 8 are soft rolls and attached to levers 18 and 19 with their bearings 16 and 17, about pivot axes 20 and 21 on stand 1 can pivot.
  • the middle roller 9 is a hard roller, the bearing 22nd is supported by a lever 23 which is about a pivot axis 24 is pivotable.
  • the middle roller 10 is a soft roller, the bearing 25 are carried by levers 26 which are about pivot axes 27 are pivotable.
  • the lowest center roll 11 is a hard roll
  • the Bearings 28 are carried by levers 29 which are arranged around a Pivot axis 30 are pivotable.
  • the lower roller 12 is in turn a bending adjustment roller with a jacket with limited stroke.
  • the coat is via hydraulic support elements on a turning test held Supported 31.
  • the construction of such bending adjustment rollers results from DE 30 04 913 C2.
  • the middle rollers 7, 9 and 11 can cross to the stacking level 13 can be moved out.
  • the Hebei are 18, 23 and 29 each with the help of a hydraulic motor 32, 33 and 34 relative to the pivot axis 20, 24 and 30 adjustable on guides not shown.
  • the lower roller 12 is adjustable transversely to the stacking plane 13, for what purpose a hydraulic motor 49 between carrier 31 and stand 1 is provided.
  • Stops 36 to 40 are the individual levers of the center rollers assigned and determine their end position. So the lowest nip 41 is from the stroke of the jacket of the Bottom roller 12, the stop 40 and the way in the direction of arrow D determined.
  • the size of the nip 42 depends on the stops 39 and 40 and the path towards the Arrow D from.
  • the size of the nip 43 results from the Location of the stops 38 and 39 and the size of the Path in the direction of arrow C.
  • the nip 44 results by the location of the stops 37 and 38 and the latter Path.
  • the nip 45 is through the stops 36 and 37 and the path in the direction of arrow B are determined.
  • the nip 46 results from the position of the stop 36 with reference to the fixed center roller 6.
  • nip 47 results from the stroke in the direction of arrow E, which the jacket of the top roller 5 performs. All opening movements can largely done simultaneously.
  • For adjusting the hydraulic cylinders 32 to 34 as well as the coats of the top and bottom roller are relatively small amounts of hydraulic fluid and a relatively low pressure is required. You can therefore all connections with hydraulic Execute standard pipes and connections and required no expensive and very large hydraulic components.
  • FIG. 3 differs from FIG. 2 only in that that the carrier 31 of the lower roller 12 using the hydraulic cylinder 38 around the path according to arrow F approximately is displaced perpendicular to the stack plane 13. Now if the nip 41 is closed, it forms a working nip, while all other nips 42 to 47 are open. You can therefore use a matt treatment instead of a satin finish carry out.
  • the bearing block carrying the bearing 122 is over one Swivel bearing 148 guided on lever 123. 4 is the stretched position is shown for normal operation, 5 the kinked position for the roller cutting operation, where the bearing axis has a smaller distance of the pivot axis 124 than in the stretched state.
  • stops 138 ensure that a defined one End position results.
  • the embodiment shown can be in multiple Terms are deviated without the basic idea to leave the invention.
  • the top middle roller 6 like the other middle rollers a lever can be mounted if one of the end rollers 5 or 12 of the roller jacket moved up to a stop and with the help of the jacket of the other end roller the Nip load is set.
  • the hard rollers 6, 9 and 11 are preferably heated.
  • the center rollers 7, 8 and 10 can have an elastic cover, but also the top and bottom rollers 5 and 12.

Landscapes

  • Paper (AREA)
  • Unwinding Webs (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The calender assembly to process web materials, such as of paper, has at least one center roller (7,9,11) for a roller separation in relation to an adjacent roller, which can be moved laterally and at right angles to the plane (13) of the roller stack (4). The lower roller (12) can be lowered in the stack (4) along the roller plane (13), for roller separation, and the lowest center roller (11) can be moved laterally. The bottom roller (12) has a controlled bending action, and the lowering movement is restricted to the mantle stroke limit. The plane (13) of the calender rollers is pitched at an angle to the horizontal, and at least one of the center rollers (7,9,11) with a lateral movement is shifted at a downwards angle out of the roller plane (13), through the action of a hydrocylinder (32-34). The bearing mountings (16,22,28) of at least one center roller (7,9,11) with a lateral shift movement are carried by levers (18,23,29), on pivot axes (20,24,30) at the columns (1). The hydrocylinders (32-34) move the bearing mountings in relation to the levers or the levers in relation to the pivot axes (20,24,30) or the pivot axes in relation to the columns. The bearing mountings are moved through swivel joints at the levers. At least one movable center roller (9,11) is a hard roller. The upper roller (5) is a controlled bending roller with a mantle stroke movement and a carrier (14) fixed to the columns. The uppermost center roller (6) is in a fixed mounting at the columns. At least one center roller (7-11) is carried by levers (18,23,26,29), which pivot on axes (20,21,24,27,30) at the columns (1), with limit stops to prevent a lowering movement of the center rollers (7-11). The bottom center roller (11) and the lower roller (12) have a lateral shifting movement to form a single working nip where the other roller nips are open.

Description

Die Erfindung bezieht sich auf einen Kalander für bahnförmige Materialien, wie Papier, mit einem Ständer und einem Walzenstapel, der eine Unterwalze, eine Oberwalze und mindestens eine dazwischen angeordnete Mittelwalze aufweist.The invention relates to a calender for web-shaped Materials, such as paper, with a stand and a roll stack, the one lower roll, one upper roll and at least one intermediate roller arranged between them having.

Ein solcher Kalander ist aus DE 30 04 913 C2 bekannt. Die Walzen sind in einem vertikalen Stapel angeordnet. Ober- und Unterwalze sind Biegeeinstellwalzen mit Mantelhub. Die Unterwalze ist auf einem hydraulischen Zylinder abgestützt, der zusammen mit dem Mantelhub der Unterwalze einen ausreichend großen Absenkweg zum Trennen der Walzen voneinander ergibt. Bei dieser Absenkbewegung kommen die Anschläge der einzelnen Walzen nacheinander auf Stellmuttern von Hängespindeln zur Auflage, was bedeutet, daß die einzelnen Walzennips nacheinander und nach Durchlaufen eines entsprechend großen Weges voneinander getrennt sind. Such a calender is known from DE 30 04 913 C2. The rollers are arranged in a vertical stack. The top and bottom rollers are bending adjustment rollers with jacket lift. The lower roller is on a hydraulic cylinder supported, which together with the jacket stroke of Lower roller has a sufficiently large lowering path for cutting the rolls result from each other. With this lowering movement the stops of the individual rollers come one after the other on adjusting nuts of hanging spindles for support, which means that the individual roll nips in succession and after going through a correspondingly large one Are separated from each other.

Aus DE 27 52 034 A1 ist es bekannt, die Walzen eines Kalanders nicht in einem Stapel, sondern zickzackförmig versetzt zueinander anzuordnen. Dies ermöglicht es, durch seitliches Herausfahren der Walzen so große Trennspalte zu bilden, daß die Bahn geradlinig eingezogen werden kann. Es entfällt aber die gemeinsame Belastung aller im Stapel befindlichen Walzen. Vielmehr muß jede Walze einzeln belastet werden, um die gewünschte Streckenlast aufzubringen.From DE 27 52 034 A1 it is known to roll one Calenders not in a stack, but zigzag to be staggered. This enables by pulling the rollers out sideways so big Separation gaps to form that the web is drawn straight can be. However, there is no shared burden of all rollers in the stack. Rather, it must each roller can be individually loaded to the desired Apply line load.

Der Erfindung liegt die Aufgabe zugrunde, einen Kalander der eingangs beschriebenen Art anzugeben, bei dem die Trennung der Walzen besonders rasch erfolgen kann.The invention has for its object a calender of the type described in the introduction, in which the separation of the rollers can be done particularly quickly.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß mindestens eine Mittelwalze zwecks Walzentrennung relativ zur Nachbarwalze in einer etwa senkrecht zur Stapelebene verlaufenden Querrichtung verlagerbar ist.This object is achieved in that at least one middle roller for the purpose of roller separation relative to the neighboring roller in an approximately perpendicular to the stacking plane transverse direction is displaceable.

Bei dieser Konstruktion kann die Querbewegung der genannten Mittelwalze(n) unmittelbar nach der Druckabsenkung mi Walzenstapel beginnen. Das Öffnen der einzelnen Spalte geschieht daher weitgehend gleichzeitig. Schon wenn nur ein Teil der Walzennips durch die Querbewegung geöffnet wird, ergibt sich eine erhebliche Verkürzung des Trennzeit.With this construction, the transverse movement of the above Middle roller (s) immediately after the pressure drop start with the stack of rollers. Opening the individual Gap therefore happens largely simultaneously. Nice if only part of the roll nips due to the transverse movement is opened, there is a considerable shortening the separation time.

Günstig ist es, daß die Unterwalze zwecks Walzentrennung in der Stapelebene absenkbar und die unterste Mittelwalze quer verlagerbar ist. Wegen dieser Absenkung kann die Mittelwalze ihre Querbewegung noch rascher ausführen. It is favorable that the bottom roller for the purpose of roller separation lowerable in the stacking level and the bottom middle roller is transversely displaceable. Because of this lowering the center roller can make its transverse movement even faster To run.

Ein weiterer Vorteil besteht darin, daß die Absenkbewegung der Unterwalze sehr gering gehalten werden kann, wodurch sich die Baugröße erheblich vermindern läßt. Dies wird insbesondere dadurch erreicht, daß die Unterwalze durch eine Biegeeinstellwalze mit Mantelhub gebildet und der Absenkweg auf den Mantelhub beschränkt ist. Das bedeutet, daß auf die unteren Hubzylinder völlig verzichtet werden kann. Gerade sie forderten ja hohe Drücke und große Abmessungen. Demgegenüber brauchen nunmehr nur die längs der Biegeeinstellwalze angeordneten Stützelemente mit Druck beaufschlagt zu werden, wofür wesentlich geringere Drücke ausreichen. Auch die für eine rasche Absenkbewegung erforderlichen großen Querschnitte der Rohrleitungen können entfallen.Another advantage is that the lowering movement the bottom roller can be kept very low, whereby the size can be significantly reduced. This is achieved in particular in that the lower roller formed by a bending adjustment roller with a jacket stroke and the lowering path is limited to the jacket stroke is. This means that the lower lifting cylinders completely can be dispensed with. They were demanding high ones Pressures and large dimensions. In contrast, need now only those arranged along the bending adjustment roller Support elements to be pressurized for what much lower pressures are sufficient. Also the necessary for a quick lowering movement Cross sections of the pipelines can be omitted.

Sehr günstig ist es, daß die Stapelebene zur Horizontalen geneigt ist und die mindestens eine quer verlagerbare Mittelwalze schräg nach unten aus der Stapelebene bewegbar ist. Durch die Schrägneigung der Stapelebene ist sowohl die abzusenkende Unterwalze als auch die mindestens eine quer verlagerbare Mittelwalze durch eine Kraftkomponente in der gewünschten Bewegungsrichtung belastet, so daß das Öffnen der Nips noch rascher vonstatten geht.It is very favorable that the stacking plane is horizontal is inclined and the at least one transversely displaceable Center roll obliquely down from the stacking level is movable. Due to the inclination of the stacking level is both the lower roller to be lowered and the at least one transversely displaceable center roll by one Force component in the desired direction of movement loaded so that the opening of the nips takes place even more quickly goes.

Insgesamt ist es empfehlenswert, daß die mindestens eine quer verlagerbare Mittelwalze durch Hydrozylinder verlagerbar ist. Mit solchen Hydrozylindern, die hinsichtlich Größe und Druckbelastung keine hohen Ansprüche stellen, kann die Querbewegung auf einfache Weise gesteuert werden. Overall, it is recommended that the at least one Transversely displaceable center roll through hydraulic cylinders is relocatable. With such hydraulic cylinders, as regards Size and pressure load no high demands can make the transverse movement in a simple manner to be controlled.

Konstruktiv ist es von Vorteil, daß die Lager der mindestens einen quer verlagerbaren Mittelwalze von Hebeln getragen sind, die um Schwenkachsen am Ständer schwenkbar sind und daß die Lager relativ zu den Hebeln oder die Hebel relativ zu den Schwenkachsen oder die Schwenkachsen relativ zum Ständer durch die Hydrozylinder verstellbar sind. Es gibt zahlreiche Möglichkeiten, dies zu verwirklichen, beispielsweise mit Hilfe eines Schlittens und einer Schlittenführung.In terms of design, it is advantageous that the bearings of the least a cross-shiftable center roller of levers are carried, which can be pivoted about pivot axes on the stand are and that the bearings relative to the levers or the levers relative to the pivot axes or the pivot axes relative to the stand by the hydraulic cylinders are adjustable. There are numerous ways to achieve this, for example with the help of a Sled and a sled guide.

Eine andere einfache Lösung sieht vor, daß die Lager mittels eines Schwenkgelenks an den Hebeln geführt sind.Another simple solution is that the bearings guided by means of a swivel joint on the levers are.

Zweckmäßigerweise ist mindestens eine quer verlagerbare Mittelwalze eine harte Walze. Die weichen Walzen, die im Betrieb des öfteren gewechselt werden müssen, bleiben dann von der freien Seite des Stapels her leicht zugänglich.At least one is expediently displaceable transversely Middle roller a hard roller. The soft rollers that have to be changed frequently during operation then slightly from the free side of the stack accessible.

Eine vorteilhafte Weiterbildung sieht vor, daß die Oberwalze durch eine Biegeeinstellwalze mit Mantelhub und ständerfestem Träger gebildet ist. Bei gegebener Walzenzahl im Stapel ergibt sich hierbei die geringste Bauhöhe.An advantageous further development provides that the Top roller through a bending adjustment roller with jacket stroke and stand-fixed carrier is formed. Given The lowest number of rolls in the stack results here Overall height.

Empfehlenswert ist es, daß die oberste Mittelwalze ständerfest gelagert ist. Die Oberwalze kann dann durch Anheben gleichzeitig mit dem Absenken oder Querbewegen der übrigen Walzen von der darunter befindlichen Walze getrennt werden.It is recommended that the top middle roller is stably mounted. The top roller can then pass through Lifting simultaneously with lowering or moving sideways the remaining rollers from the roller underneath be separated.

Von besonderem Interesse ist es hierbei, daß mindestens eine Mittelwalze von Hebeln getragen ist, die um Schwenkachsen am Ständer schwenkbar sind und daß den Hebeln Anschläge zugeordnet sind, die die Absenkbewegung der Mittelwalze stoppen. Die Öffnungsweite des Nips bestimmt sich daher durch die Schwenkwege der Hebel und - bei den querverlagerbaren Mittelwalzen - durch die Querverlagerung.It is of particular interest here that at least a center roller is carried by levers that move around Swivel axes on the stand are pivotable and that the Lever stops are assigned to the lowering movement stop the center roller. The opening width of the Nips is therefore determined by the swivel paths of the levers and - in the case of the cross-shiftable center rollers - through the cross shift.

Empfehlenswert ist es auch, daß die unterste Mittelwalze quer verlagerbar ist und daß die Unterwalze ebenfalls quer verlagerbar ist, um einen einzigen Arbeitsnip bei im übrigen geöffneten Walzennips zu bilden. Man kann daher ein und denselben Kalander zum Satinieren (unter Verwendung aller Walzennips) und zum Mattieren (unter Verwendung nur des untersten Spalts) betreiben.It is also recommended that the bottom middle roller is transversely displaceable and that the lower roller also is transversely shiftable to a single work nip to form with roller nips open otherwise. Man can therefore use the same calender for calendering (using all roller nips) and for matting (using only the lowest gap).

Die Erfindung wird nachstehend anhand in der Zeichnung dargestellter bevorzugter Ausführungsbeispiele näher beschrieben. Hierin zeigen:

Fig. 1
einen Kalander gemäß der Erfindung mit geschlossenen Walzennips,
Fig. 2
den Kalander der Fig. 1 mit geöffneten Walzennips,
Fig. 3
den Kalander der Fig. 1 in der Betriebsetellung mit nur einem Arbeitsspalt,
Fig. 4
eine Ausführungsform eines Hebels mit angelenktem Walzenlager und
Fig. 5
die Anordnung der Fig. 4 in abgesenktem Zustand.
The invention is described below with reference to preferred embodiments shown in the drawing. Show here:
Fig. 1
a calender according to the invention with closed roll nips,
Fig. 2
1 with the roller nips open,
Fig. 3
1 in the operating position with only one working gap,
Fig. 4
an embodiment of a lever with articulated roller bearing and
Fig. 5
the arrangement of Fig. 4 in the lowered state.

Der in Fig. 1 veranschaulichte Kalander weist einen Ständer 1 auf, der auf einem Boden 2 und einem erhöhten Podest 3 abgestützt ist. Ein Walzenstapel 4 besitzt acht Walzen 5 bis 12, deren Mittellinien in einer Stapelebene 13 liegen, die in einem Winkel von etwa 45° zur Horizontalen verläuft.The calender illustrated in Fig. 1 has one Stand 1 on a floor 2 and a raised Podium 3 is supported. Has a roll stack 4 eight rollers 5 to 12, whose center lines in a stacking plane 13 lie at an angle of about 45 ° runs to the horizontal.

Die Oberwalze 5 ist eine Biegeeinstellwalze mit einem drehfest am Ständer 1 gehaltenen Träger 14, auf dem sich ein Walzenmantel mit begrenztem Hub über hydraulische Stützelemente abstützt.The top roller 5 is a bending adjustment roller with a rotatably held on the stand 1 support 14, on the a roller jacket with limited stroke via hydraulic Supports.

Die oberste Mittelwalze 6 ist eine harte Walze. Ihr Lager 15 ist fest am Ständer 1 montiert.The top middle roller 6 is a hard roller. Your camp 15 is fixedly mounted on the stand 1.

Die folgende Mittelwalzen 7 und 8 sind weiche Walzen und mit ihren Lagern 16 und 17 an Hebeln 18 bzw. 19 befestigt, die um Schwenkachsen 20 bzw. 21 am Ständer 1 schwenken können.The following center rolls 7 and 8 are soft rolls and attached to levers 18 and 19 with their bearings 16 and 17, about pivot axes 20 and 21 on stand 1 can pivot.

Die Mittelwalze 9 ist eine harte Walze, deren Lager 22 von einem Hebel 23 getragen ist, der um eine Schwenkachse 24 schwenkbar ist.The middle roller 9 is a hard roller, the bearing 22nd is supported by a lever 23 which is about a pivot axis 24 is pivotable.

Die Mittelwalze 10 ist eine weiche Walze, deren Lager 25 von Hebeln 26 getragen sind, die um Schwenkachsen 27 schwenkbar sind.The middle roller 10 is a soft roller, the bearing 25 are carried by levers 26 which are about pivot axes 27 are pivotable.

Die unterste Mittelwalze 11 ist eine harte Walze, deren Lager 28 von Hebeln 29 getragen sind, die um eine Schwenkachse 30 schwenkbar sind. The lowest center roll 11 is a hard roll, the Bearings 28 are carried by levers 29 which are arranged around a Pivot axis 30 are pivotable.

Die Unterwalze 12 ist wiederum eine Biegeeinstellwalze mit einem Mantel mit begrenztem Hub. Der Mantel ist über hydraulische Stützelemente auf einem drehtest gehaltenen Träger 31 abgestützt. Der Aufbau solcher Biegeeinstellwalzen ergibt sich aus DE 30 04 913 C2.The lower roller 12 is in turn a bending adjustment roller with a jacket with limited stroke. The coat is via hydraulic support elements on a turning test held Supported 31. The construction of such bending adjustment rollers results from DE 30 04 913 C2.

Die Mittelwalzen 7, 9 und 11 können quer zur Stapelebene 13 herausbewegt werden. Zu diesem Zweck sind die Hebei 18, 23 und 29 jeweils mit Hilfe eines Hydromotors 32, 33 bzw. 34 relativ zur Schwenkachse 20, 24 bzw. 30 auf nicht veranschaulichten Führungen verstellbar. Auch die Unterwalze 12 ist quer zur Stapelebene 13 verstellbar, zu welchem Zweck ein Hydromotor 49 zwischen Träger 31 und Ständer 1 vorgesehen ist.The middle rollers 7, 9 and 11 can cross to the stacking level 13 can be moved out. For this purpose the Hebei are 18, 23 and 29 each with the help of a hydraulic motor 32, 33 and 34 relative to the pivot axis 20, 24 and 30 adjustable on guides not shown. Also the lower roller 12 is adjustable transversely to the stacking plane 13, for what purpose a hydraulic motor 49 between carrier 31 and stand 1 is provided.

Zahlreiche Einzelheiten, wie Leitwalzen, Antriebe u.dgl. sind der besseren Übersichtlichkeit halber nicht dargestellt.Numerous details, such as guide rollers, drives and the like are not for the sake of clarity shown.

In der Betriebsstellung der Fig. 1 wird der oberste Nip durch die am Mantel der Oberwalze 5 angreifenden Stützelemente belastet. Alle übrigen Nips werden durch die am Mantel der Unterwalze 12 angreifenden Stützelemente belastet.In the operating position of Fig. 1, the top nip by the supporting elements acting on the jacket of the top roller 5 charged. All other nips are made by the on the jacket of the lower roller 12 engaging support elements charged.

Wenn es nun notwendig wird, eine rasche Walzentrennung vorzunehmen, wird Druckflüssigkeit aus den Druckkammern der Stützelemente der Unterwalze 12 abgelassen, so daß der Walzenmantel nach unten sinkt, wie dies der Pfeil A in Fig. 2 zeigt. Gleichzeitig werden die Mittelwalzen 7, 9 und 11 quer zur Stapelebene 13 schräg nach unten bewegt, wie dies die Pfeile B, C und D andeuten. Die bei der Querbewegung zu erreichende Endlage der Mittelwalze 11 und in ähnlicher Weise der Mittelwalze 9 ist durch einen Anschlag 35 vorgegeben. Außerdem wird der Mantel der Oberwalze 5 durch entsprechende Stützelemente in Richtung der Stapelebene 13 nach oben angehoben, wie dies der Pfeil E zeigt. Die Bewegung der Walzen sowohl in Richtung der Stapelebene 13 als auch quer dazu wird durch das jeweilige Walzengewicht, von dem jeweils eine Komponente in Richtung der Stapelebene 13 und in Richtung quer dazu wirksam ist, unterstützt.If it becomes necessary now, a quick separation of the rollers pressure fluid from the pressure chambers of the support elements of the lower roller 12 so that the roller shell sinks down, as arrow A in Fig. 2 shows. At the same time, the center rollers 7, 9 and 11 transversely to the stacking level 13 obliquely downwards moves, as indicated by arrows B, C and D. The end position of the center roller to be reached during the transverse movement 11 and similarly to the center roll 9 predetermined by a stop 35. In addition, the Jacket of the top roller 5 by appropriate support elements raised towards the stacking level 13, as the arrow E shows. The movement of the rollers both in the direction of the stack plane 13 as well as transversely to it is determined by the respective roller weight, of which each a component in the direction of the stacking level 13 and in Direction across it is supported.

Anschläge 36 bis 40 sind den einzelnen Hebeln der Mittelwalzen zugeordnet und bestimmen deren Endlage. So wird der unterste Nip 41 von dem Hub des Mantels der Unterwalze 12, dem Anschlag 40 und dem Weg in Richtung des Pfeiles D bestimmt. Die Größe des Nips 42 hängt von den Anschlägen 39 und 40 sowie dem Weg in Richtung des Pfeiles D ab. Die Größe des Nips 43 ergibt sich aus der Lage der Anschläge 38 und 39 sowie aus der Größe des Weges in Richtung des Pfeiles C. Der Nip 44 ergibt sich durch die Lage der Anschläge 37 und 38 sowie dem letztgenannten Weg. Der Nip 45 ist durch die Anschläge 36 und 37 sowie dem Weg in Richtung des Pfeiles B bestimmt. Der Nip 46 ergibt sich aus der Lage des Anschlags 36 mit Bezug auf die fest gelagerte Mittelwalze 6. Und der Nip 47 ergibt sich durch den Hub in Richtung des Pfeiles E, den der Mantel der Oberwalze 5 vollführt. Alle Öffnungsbewegungen können weitgehend gleichzeitig erfolgen. Zur Verstellung der Hydrozylinder 32 bis 34 sowie der Mäntel der Ober- und Unterwalze sind verhältnismäßig geringe Druckflüssigkeitsmengen und ein verhältnismäßig geringer Druck erforderlich. Man kann daher sämtliche Anschlüsse mit hydraulischen Norm-Rohren und Verbindungen ausführen und benötigt keine teueren und sehr groß dimensionierten Hydraulikkomponenten. Stops 36 to 40 are the individual levers of the center rollers assigned and determine their end position. So the lowest nip 41 is from the stroke of the jacket of the Bottom roller 12, the stop 40 and the way in the direction of arrow D determined. The size of the nip 42 depends on the stops 39 and 40 and the path towards the Arrow D from. The size of the nip 43 results from the Location of the stops 38 and 39 and the size of the Path in the direction of arrow C. The nip 44 results by the location of the stops 37 and 38 and the latter Path. The nip 45 is through the stops 36 and 37 and the path in the direction of arrow B are determined. The nip 46 results from the position of the stop 36 with reference to the fixed center roller 6. And the nip 47 results from the stroke in the direction of arrow E, which the jacket of the top roller 5 performs. All opening movements can largely done simultaneously. For adjusting the hydraulic cylinders 32 to 34 as well as the coats of the top and bottom roller are relatively small amounts of hydraulic fluid and a relatively low pressure is required. You can therefore all connections with hydraulic Execute standard pipes and connections and required no expensive and very large hydraulic components.

Zum Wiederherstellen des geschlossenen Stapels 4 brauchen lediglich die Wege entsprechend den Pfeilen A bis E rückgängig gemacht zu werden, um den Walzenstapel erneut in Betrieb zu nehmen können.To restore the closed stack 4 need only the paths according to arrows A to E to be undone to the roll stack again can be put into operation.

Fig.3 unterscheidet sich von Fig. 2 lediglich dadurch, daß der Träger 31 der Unterwalze 12 mit Hilfe des Hydrozylinders 38 um den Weg entsprechend dem Pfeil F etwa senkrecht zur Stapelebene 13 verlagert wird. Nunmehr ist der Nip 41 geschlossen, bildet also einen Arbeitsnip, während alle übrigen Nips 42 bis 47 geöffnet sind. Man kann daher statt der Satinierung eine Mattbehandlung durchführen.3 differs from FIG. 2 only in that that the carrier 31 of the lower roller 12 using the hydraulic cylinder 38 around the path according to arrow F approximately is displaced perpendicular to the stack plane 13. Now if the nip 41 is closed, it forms a working nip, while all other nips 42 to 47 are open. You can therefore use a matt treatment instead of a satin finish carry out.

Bei der Ausführungsform nach den Fig. 4 und 5 erfolgt die Querbewegung durch eine Relativverstellung zwischen den Lagern der Mittelwalzen und den zugehörigen Hebeln. Daher werden für entsprechende Teile um 100 erhöhte Bezugszeichen verwendet.In the embodiment according to FIGS. 4 and 5 the transverse movement by a relative adjustment between the bearings of the center rollers and the associated levers. For this reason, reference numerals are increased by 100 for corresponding parts used.

Der das Lager 122 tragende Lagerblock ist über ein Schwenklager 148 am Hebel 123 geführt. In Fig. 4 ist die gestreckte Lage für den Normalbetrieb dargestellt, in Fig. 5 die geknickte Lage für den Walzentrennbetrieb, bei dem die Lagerachse einen geringeren Abstand von der Schwenkachse 124 hat als im gestreckten Zustand. Auch bei dieser Lösung wirkt das Gewicht der Walze in dem Sinne, daß eine rasche Absenkung erfolgt. Wiederum sorgen Anschläge 138 dafür, daß sich eine definierte Endlage ergibt.The bearing block carrying the bearing 122 is over one Swivel bearing 148 guided on lever 123. 4 is the stretched position is shown for normal operation, 5 the kinked position for the roller cutting operation, where the bearing axis has a smaller distance of the pivot axis 124 than in the stretched state. With this solution, too, the weight of the Roller in the sense that there is a rapid lowering. Again, stops 138 ensure that a defined one End position results.

Von der dargestellten Ausführungsform kann in vielfacher Hinsicht abgewichen werden, ohne den Grundgedanken der Erfindung zu verlassen. Beispielsweise kann die oberste Mittelwalze 6 wie die anderen Mittelwalzen an einem Hebel gelagert sein, wenn bei einer der Endwalzen 5 oder 12 der Walzenmantel bis zu einem Anschlag gefahren und mit Hilfe des Mantels der anderen Endwalze die Nipbelastung eingestellt wird. Die harten Walzen 6, 9 und 11 sind vorzugsweise beheizt. Nicht nur die Mittelwalzen 7, 8 und 10 können einen elastischen Bezug tragen, sondern auch die Ober- und Unterwalze 5 und 12.The embodiment shown can be in multiple Terms are deviated without the basic idea to leave the invention. For example, the top middle roller 6 like the other middle rollers a lever can be mounted if one of the end rollers 5 or 12 of the roller jacket moved up to a stop and with the help of the jacket of the other end roller the Nip load is set. The hard rollers 6, 9 and 11 are preferably heated. Not just the center rollers 7, 8 and 10 can have an elastic cover, but also the top and bottom rollers 5 and 12.

Es besteht auch die Möglichkeit, lediglich im unteren Stapelteil befindliche Walzen quer zu verlagern und weiter oben befindliche Mittelwalzen in üblicher Weise absenken zu lassen. Eine weitere Möglichkeit der Querverstellung besteht auch darin, die Schwenkachse der Hebel relativ zum Ständer zu verlagern.There is also the option of just the bottom To shift the part of the rolls located across and middle rollers located above in the usual way to lower. Another possibility of cross adjustment is also the pivot axis of the Shift lever relative to the stand.

Claims (12)

Kalander für bahnförmige Materialien, wie Papier, mit einem Ständer und einem Walzenstapel, der eine Unterwalze, eine Oberwalze und mindestens eine dazwischen angeordnete Mittelwalze aufweist, dadurch gekennzeichnet, daß mindestens eine Mittelwalze (7, 9, 11; 109) zwecks Walzentrennung relativ zur Nachbarwalze in einer etwa senkrecht zur Stapelebene (13) verlaufenden Querrichtung verlagerbar ist.Calender for sheet-like materials, such as paper, with a stand and a stack of rollers, the one Bottom roller, one top roller and at least one in between arranged arranged middle roller, thereby characterized in that at least one center roll (7, 9, 11; 109) for the purpose of roller separation relative to Neighboring roller in an approximately perpendicular to the stacking plane (13) extending transverse direction is. Kalander nach Anspruch 1, dadurch gekennzeichnet, daß die Unterwalze (12) zwecks Walzentrennung in der Stapelebene (13) absenkbar und die unterste Mittelwalze (11) quer verlagerbar ist.Calender according to claim 1, characterized in that the lower roller (12) in order to separate the rollers the stacking level (13) can be lowered and the lowest Center roller (11) is displaceable transversely. Kalander nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Unterwalze (12) durch eine Biegeeinstellwalze mit Mantelhub gebildet und der Absenkweg auf den Mantelhub beschränkt ist. Calender according to claim 1 or 2, characterized in that the lower roller (12) by a bending adjustment roller formed with jacket stroke and the lowering path is limited to the jacket stroke. Kalander nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Stapelebene (13) zur Horizontalen geneigt ist und die mindestens eine quer verlagerbare Mittelwalze (7, 9, 11) schräg nach unten aus der Stapelebene (13) bewegbar ist.Calender according to one of claims 1 to 3, characterized characterized in that the stacking plane (13) to the horizontal is inclined and the at least one is transverse displaceable center roller (7, 9, 11) at an angle can be moved down out of the stacking plane (13). Kalander nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die mindestens eine quer verlagerbare Mittelwalze (7, 9, 11; 109) durch Hydrozylinder (32, 33, 34; 133) verlagerbar ist.Calender according to one of claims 1 to 4, characterized characterized in that the at least one transversely displaceable Middle roller (7, 9, 11; 109) by hydraulic cylinder (32, 33, 34; 133) is relocatable. Kalander nach Anspruch 5, dadurch gekennzeichnet, daß die Lager (16, 22, 28; 122) der mindestens einen quer verlagerbaren Mittelwalze (7, 9, 11; 109) von Hebeln (18, 23, 29; 123) getragen sind, die um Schwenkachsen (20, 24, 30) am Ständer (1) schwenkbar sind und daß die Lager (122) relativ zu den Hebeln (123) oder die Hebel (18, 23, 29) relativ zu den Schwenkachsen (20, 24, 30) oder die Schwenkachsen relativ zum Ständer durch die Hydrozylinder (32, 33, 34) verstellbar sind.Calender according to claim 5, characterized in that the bearings (16, 22, 28; 122) of the at least one transversely displaceable center roll (7, 9, 11; 109) are carried by levers (18, 23, 29; 123) which move around Swivel axes (20, 24, 30) on the stand (1) can be swiveled and that the bearings (122) are relative to the Lever (123) or the lever (18, 23, 29) relative to the swivel axes (20, 24, 30) or the swivel axes relative to the stand by the hydraulic cylinders (32, 33, 34) are adjustable. Kalander nach Anspruch 6, dadurch gekennzeichnet, daß die Lager (122) mittels eines Schwenkgelenks (148) an den Hebeln (123) geführt sind.Calender according to claim 6, characterized in that the bearing (122) by means of a swivel joint (148) are guided on the levers (123). Kalander nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß mindestens eine quer verlagerbare Mittelwalze (9, 11) eine harte Walze ist.Calender according to one of claims 1 to 7, characterized characterized in that at least one transversely displaceable Middle roller (9, 11) is a hard roller. Kalander nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Oberwalze (5) durch eine Biegeeinstellwalze mit Mantelhub und ständerfestem Träger (14) gebildet ist. Calender according to one of claims 1 to 8, characterized characterized in that the top roller (5) by a Bending adjustment roller with jacket stroke and stand-fixed Carrier (14) is formed. Kalander nach Anspruch 9, dadurch gekennzeichnet, daß die oberste Mittelwalze (6) ständerfest gelagert ist.Calender according to claim 9, characterized in that the top middle roller (6) is mounted on the stand is. Kalander nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß mindestens eine Mittelwalze (7 bis 11) von Hebeln (18, 29, 23, 26, 29) getragen ist, die um Schwenkachsen (20, 21, 24, 27, 29) am Ständer (1) schwenkbar sind und daß den Hebeln Anschläge (36 bis 40) zugeordnet sind, die die Absenkbewegung der Mittelwalze (7 bis 11) stoppen.Calender according to one of claims 1 to 10, characterized characterized in that at least one center roll (7 to 11) of levers (18, 29, 23, 26, 29) carried around swivel axes (20, 21, 24, 27, 29) on the stand (1) are pivotable and that Lever stops (36 to 40) are assigned to the the lowering movement of the center roller (7 to 11) to stop. Kalander nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die unterste Mittelwalze (11) quer verlagerbar ist und daß die Unterwalze (12) ebenfalls quer verlagerbar ist, um einen einzigen Arbeitsnip (41) bei im übrigen geöffneten Walzennips (42 bis 47) zu bilden.Calender according to one of claims 1 to 11, characterized characterized that the lowest center roll (11) is transversely displaceable and that the lower roller (12) is also transversely displaceable to a single one Working nip (41) with the rest open Roll nips (42 to 47) to form.
EP00100896A 1999-02-04 2000-01-18 Calender for web materials like paper Expired - Lifetime EP1026316B1 (en)

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DE19904451A DE19904451B4 (en) 1999-02-04 1999-02-04 Calender for sheet-like materials such as paper
DE19904451 1999-02-04

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1199404A3 (en) * 2000-10-20 2003-04-02 Voith Paper Patent GmbH Method and device for calendering a web
US6705216B2 (en) * 2001-06-16 2004-03-16 Voith Paper Patent Gmbh Calender
WO2004081282A1 (en) * 2003-03-13 2004-09-23 Metso Paper Inc. Calender and method of calendering
EP1621668A1 (en) * 2004-07-31 2006-02-01 Voith Paper Patent GmbH Calender
WO2006051169A2 (en) * 2004-11-12 2006-05-18 Metso Paper, Inc. Method in a multiroll calender, a multiroll calender and a method for loading a calender roll of a multiroll calender and a multiroll calender
EP1876292A1 (en) 2006-07-05 2008-01-09 Voith Patent GmbH Calender

Families Citing this family (3)

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DE10041651A1 (en) * 2000-08-24 2002-03-14 Voith Paper Patent Gmbh calender
DE10102094C1 (en) * 2001-01-18 2002-03-07 Voith Paper Patent Gmbh Operating stacked calender with heated- and soft rollers to prevent barring on gloss papers, considerably reduces thermal coupling between them during stoppages
DE102005016781B3 (en) * 2005-04-12 2006-03-30 Eduard Küsters Maschinenfabrik GmbH & Co. KG Calender, for finishing a paper web, has an angled roller stack on a column with intermediate rollers on levers suspended freely from the column as weights when in the open setting

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US3154008A (en) * 1963-02-09 1964-10-27 Dominion Eng Works Ltd Calender stack
US3331313A (en) * 1965-09-24 1967-07-18 Black Clawson Co Calender stacks having transverse pressure sensing and adjustment means

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DE2752034C2 (en) * 1977-11-22 1984-03-08 Kleinewefers Gmbh, 4150 Krefeld Device for pressure treatment of a material web in a calender or a smoothing unit
DE3004913C2 (en) * 1980-02-09 1982-07-15 Kleinewefers Gmbh, 4150 Krefeld calender
FI87590C (en) * 1990-10-11 1998-02-17 Valmet Corp Kalander i pappers- eller kartonmaskin

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GB825873A (en) * 1955-06-28 1959-12-23 Verdier Andre L Improvements in and relating to roller mills, calenders and the like machines
US3154008A (en) * 1963-02-09 1964-10-27 Dominion Eng Works Ltd Calender stack
US3331313A (en) * 1965-09-24 1967-07-18 Black Clawson Co Calender stacks having transverse pressure sensing and adjustment means

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1199404A3 (en) * 2000-10-20 2003-04-02 Voith Paper Patent GmbH Method and device for calendering a web
US6705216B2 (en) * 2001-06-16 2004-03-16 Voith Paper Patent Gmbh Calender
WO2004081282A1 (en) * 2003-03-13 2004-09-23 Metso Paper Inc. Calender and method of calendering
EP1621668A1 (en) * 2004-07-31 2006-02-01 Voith Paper Patent GmbH Calender
WO2006051169A2 (en) * 2004-11-12 2006-05-18 Metso Paper, Inc. Method in a multiroll calender, a multiroll calender and a method for loading a calender roll of a multiroll calender and a multiroll calender
WO2006051169A3 (en) * 2004-11-12 2006-06-15 Metso Paper Inc Method in a multiroll calender, a multiroll calender and a method for loading a calender roll of a multiroll calender and a multiroll calender
CN101408011B (en) * 2004-11-12 2012-06-27 美卓造纸机械公司 Method in a multiroll calender, a multiroll calender and a method for loading a calender roll of a multiroll calender and a multiroll calender
EP1876292A1 (en) 2006-07-05 2008-01-09 Voith Patent GmbH Calender

Also Published As

Publication number Publication date
EP1026316A3 (en) 2001-08-16
EP1026316B1 (en) 2004-03-31
DE50005835D1 (en) 2004-05-06
DE19904451A1 (en) 2000-08-17
DE19904451B4 (en) 2005-06-30

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