EP0972877B1 - Calender for paper webs or similar material - Google Patents

Calender for paper webs or similar material Download PDF

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Publication number
EP0972877B1
EP0972877B1 EP99111771A EP99111771A EP0972877B1 EP 0972877 B1 EP0972877 B1 EP 0972877B1 EP 99111771 A EP99111771 A EP 99111771A EP 99111771 A EP99111771 A EP 99111771A EP 0972877 B1 EP0972877 B1 EP 0972877B1
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EP
European Patent Office
Prior art keywords
roller
roll
rollers
stack
calender
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EP99111771A
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German (de)
French (fr)
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EP0972877A3 (en
EP0972877A2 (en
Inventor
Mathias Dipl.-Ing. Helmus
Joachim Dipl.-Ing. Hinz
Gerhard Dipl.-Ing. Stock
Franz Kayser
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Voith Patent GmbH
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Voith Paper Patent GmbH
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Publication of EP0972877A3 publication Critical patent/EP0972877A3/en
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21GCALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00Calenders; Smoothing apparatus
    • D21G1/02Rolls; Their bearings
    • D21G1/0226Bearings
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21GCALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00Calenders; Smoothing apparatus
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21GCALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00Calenders; Smoothing apparatus
    • D21G1/02Rolls; Their bearings
    • D21G1/0206Controlled deflection rolls
    • D21G1/0213Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member
    • D21G1/022Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member the means using fluid pressure

Definitions

  • the invention relates to a calender for webs made of paper or similar material, with two stacks of rollers, each with a deflection roll at at least one end have, whose coat over a Deflection adjustment device on a non-rotatable Carrier is supported.
  • a known calender of this type (DE 196 33 671 A1) are two roll stacks of five rolls in one vertical level one above the other on a stand appropriate.
  • the top roller and the bottom roller one each stack is designed as a deflection adjustment roller.
  • the top roller is on the stand fixed, while the lower roller on one relocatable and resilient by means of a hydraulic cylinder Sled is attached.
  • the roller shells are therefore stored at their ends on the associated carrier.
  • the carrier is on the stand or on the slide attached.
  • rollers of the jacket stroke type as known from DE 30 04 913 C2 are.
  • the roller jacket is not on the carrier stored, but slidable relative to it, so that the deflection adjustment device simultaneously as Can serve loading device.
  • the invention has for its object a calender of the type described in the introduction, that it offers another way of treating the web.
  • This object is achieved in that a deflection adjustment roller of the one roller stack and a deflection adjustment roller of the other roller stack of the jacket stroke type and are adjacent to each other and a closable using the coat stroke Can form additional nip, and that the direction of action of Deflection adjustment device optionally to the associated Roll stack or to the other deflection adjustment roller of the other stack of rollers.
  • Deflection adjusters are in a wide variety Known forms. They mostly work with hydrostatic support devices, particularly in the Form of rows of support elements determining the direction of action.
  • the deflection adjustment device consists of a row of support elements and means an actuator can be moved by an angle is.
  • the advantage here is that the structural Effort for the support device is kept small.
  • a recommended for the directional jacket stroke Guide offset with the row of support elements become.
  • Deflection adjustment device made of two against each other staggered rows of support elements, which is optional are effective.
  • the bearings for the carrier at least of a deflection roller eccentric with which the distance between the neighboring Deflection adjustment rollers can be reduced. This means that the new principle can also be used if the jacket stroke alone for closing the additional nip is not sufficient.
  • eccentric together with the bracket through the adjusting device at an angle are rotatable.
  • An adjusting device is therefore sufficient for the adjustment of carrier and eccentric.
  • the two roll stacks preferably have a common one Midplane. This is often constructively desirable because a joint tour is provided on the stand can be.
  • the common central plane runs obliquely to the horizontal. Due to the inclined position, there is a calender, the height of which is less than that of a 10-roll calender with a vertical roll stack and its Length is less than two arranged side by side 5-roll calender with vertical roll stack.
  • the roll stack is odd Have number of rollers and each nip through a hard and an elastic roller is limited and that the deflection adjusting rollers limiting the additional nip wear an elastic cover.
  • both roller stacks result in a glossy satin finish of the Paper, first one and then the other Web side abuts the hard, smooth rollers. at however, only using the additional nip results a satin satin.
  • a calender 1 made for the treatment of webs Paper and similar material, such as cardboard has an upper 5-roll stack 2 and a lower one 5-reel stack 3 on.
  • the upper roll stack 2 consists of the top roller 4, three intermediate rollers 5, 6 and 7 and the lower roller 8.
  • the lower roller stack 3 consists of the top roller 9, three intermediate rollers 10, 11 and 12 and the lower roller 13.
  • the top and bottom rollers 4, 8, 9 and 13 are deflection adjustment rollers of the jacket lift type, which are among themselves can have the same structure, so that with one reserve roller for all four end rollers.
  • a deflection adjustment roller has 4 a jacket 14, which has a Deflection adjustment device 15 on one in operation Supported rotatably supported on the stand 6 support 17 is.
  • the deflection adjustment device 15 exists in the present example from a series of hydrostatic Support elements 18 in a known manner via a pressure chamber 19 each with pressure medium be supplied that the deflection adjustment 15 also serves as a loading device.
  • To the The ends of the roller jacket 15 are on a bearing ring 20 mounted in the stroke direction on a stroke guide 21 is movable.
  • roller jacket 14 is therefore over its entire length is movable in the stroke direction. Moreover is still provided for the deflection adjustment rollers, that the carrier 17 with the help of an actuator 22 can be offset by an angle of 180 ° (cf. the arrow 23 in Fig. 2), so that the direction of action of Deflection adjuster 15 in the opposite Direction points as this by the dash-dotted line arranged row of support elements 18 'illustrated is.
  • the top intermediate rollers 5 and 10 are fixed to the stand 16 stored. If the associated top rollers 4 and 9, the deflection adjuster 15 shown in FIG Fig. 2 has illustrated position, the paper web 24 in the first nips 25 and 26 in the direction of passage the upper roll stack 2 or the lower roll stack 3 with a very high line load and therefore high Compressive stress are treated.
  • the intermediate rollers 6, 7, 11 and 12 are each on a lever 27 stored, about a fixed pivot axis swings. If the deflection adjusters 15 of the lower rollers 8 and 13 the dashed in Fig. 2 Have the nips 28, 29 and 30 of the top Roll stack 2 and the nips 31, 32 and 33 of the lower Roll stack 3 loaded accordingly.
  • the amount of the burden is independent of that in the first Nip 25 or 26. There are therefore four sections, in which the paper web 24 is different can be treated so that a variety of different Can produce paper qualities.
  • the upper and lower rollers 4, 8, 9 and 13 and the middle intermediate rolls 7 and 11 are elastic rolls, while the remaining intermediate rolls 5, 7, 10 and 12 are heated hard rollers. But it also comes other combinations, for example with hard tops Bottom rolls, into consideration.
  • the distance between the two deflection adjustment rollers 9 and 10 is so small that the additional nip 34 under Utilization of the roll stroke from, for example, 30 to 40 mm can be closed.
  • the additional nip 34 under Utilization of the roll stroke from, for example, 30 to 40 mm can be closed.
  • deflection adjusters 15 of the two end rollers 8 and 9 with the help of the adjusting device 22 towards each other and then that Supply pressure medium with the appropriate pressure.
  • Supply pressure medium with the appropriate pressure.
  • With this additional nip 34 can then be satinized be since the two bending adjustment rollers 8 and 9 wear an elastic cover. Without significant additional There is therefore another possibility paper handling.
  • the carrier 91 of the top roller 9 is mounted in a spherical cap 92 be in turn by an eccentric 93 will be carried.
  • the latter is together with the carrier 91 by the adjusting device 22 through 180 ° in the bearing 94.
  • the open additional nip 34 can be opened For example, 80 mm can be held, which is also an opening the nips 28 and 29 relieved.
  • the axes of the rollers 4 to 13 lie approximately in a common one Level E, which is opposite to the horizontal Is inclined 45 °. Accordingly, the stand has 16 an oblique course. It can therefore be in two places are supported, namely with a lower support surface 35 on a fixed bearing surface 36 and with an upper bearing surface 37 on an upper building-fixed Storage area 38.
  • the storage area 37 is located itself on a foot 39, the stand 16 near it upper end is attached.
  • the bearing surfaces 36 and 38 run horizontally and are each on a concrete foundation or base 40 or 41 formed. This is the stand 16 largely insensitive to vibrations.
  • the stand 16 can be less stable than so far and therefore cheaper to manufacture.
  • the calender 1 can work online. He is between the last drying roller 42 of the Drying section of a paper machine and a winding device 43, for example a slitter and Winder. Drying roller and winding device are at about the same height and above one Working level 44, which is penetrated by the calender 1. Therefore, the paper web 24 has between the drying roller 42 and the entrance of the calender 1 and between the Exit of the calender 1 and the winding device 43 a relatively weakly increasing course. This makes it easier to insert the paper web in online mode. The same advantage arises when the paper web from the drying roller 42 down into the Calender 1 is inserted and the top of the winding device 43 exits.
  • An only indicated web feed device 45 the works with rope clamping, for example Start of path through all nips 25 to 33 of the two Roll stack 2 and 3 and the additional nip 34. It is sufficient hence an insertion process for both roll stacks.
  • the Introductory movement is supported by the fact that all Rolling the calender and also the associated guide rolls each have their own drive 46.
  • the paper treatment then results depending on which one of the nips mentioned are closed.
  • Drawn in dashed lines is a second web insertion device 47, with which only the additional gap 34 is supplied. at
  • the matt satinage of a web introduced in this way exists Possibility of repairs on the other rollers or a To make a replacement. Semimatt operation results for example, if only the top one Nip 25 is used.
  • the inclination with the roller stacks arranged at the top has the further advantage that the rollers Substitution are more accessible and for example removed with a crane 48 and corresponding crane control and can be used.
  • the bearings of the roller to be replaced by means of a hydraulic actuator 49 along a guide be pulled out perpendicular to plane E, as this is shown in dashed lines in Fig. 1.
  • an actuator 49 comes primarily the piston of one along the lever 27 extending hydraulic cylinder in Consideration.
  • the crane 48 can Hold the roller ends immediately and the roller vertically dissipate.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Paper (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Abstract

The calender assembly, to process webs of paper and similar materials, has a roller (8) with an adjustable bending action in one roller stack (2) and a similar roller (9) in the other roller stack (3). They are of a lifting roller mantle type, and are next to each other to give an additional roller nip (34). The roller bend adjustment mechanism acts selectively at the associated roller stack (2,3) or to the other adjustable bend roller (8,9). The roller bend adjustment system has a support which is moved by an angle through a setting unit (22). The bearing mounting for the carrier of at least one adjustable bending roller (9) has an eccentric, which can reduce the gap between it and the neighboring adjustable bend roller (8). The eccentric is rotated together with the carrier by the setting unit (22). The two stacks of rollers (2,3) have a common center plane, at an angle to the horizontal. The roller stacks (2,3) have an uneven number of rollers and preferably five rollers in each, where each nip (25-33) is formed by a hard and a soft roller. The adjustable bend rollers (8,9) forming an additional nip (34) both have elastic mantle claddings.

Description

Die Erfindung bezieht sich auf einen Kalander für Bahnen aus Papier oder ähnlichem Material, mit zwei Walzenstapeln, die je an mindestens einem Ende eine Durchbiegungseinstellwalze aufweisen, deren Mantel über eine Durchbiegungseinstelleinrichtung auf einem drehfest gehaltenen Träger abgestützt ist.The invention relates to a calender for webs made of paper or similar material, with two stacks of rollers, each with a deflection roll at at least one end have, whose coat over a Deflection adjustment device on a non-rotatable Carrier is supported.

Bei einem bekannten Kalander dieser Art (DE 196 33 671 A1) sind zwei Walzenstapel zu je fünf Walzen in einer gemeinsamen vertikalen Ebene übereinander an einem Ständer angebracht. Die Oberwalze und die Unterwalze eines jeden Stapels sind als Durchbiegungseinstellwalze ausgeführt. Hierbei ist jeweils die Oberwalze am Ständer ortsfest befestigt, während die Unterwalze an einem mittels eines Hydraulikzylinders versetz- und belastbaren Schlitten befestigt ist. Die Walzenmäntel sind daher an ihren Enden auf dem zugehörigen Träger gelagert. Der Träger ist am Ständer beziehungsweise am Schlitten befestigt.In a known calender of this type (DE 196 33 671 A1) are two roll stacks of five rolls in one vertical level one above the other on a stand appropriate. The top roller and the bottom roller one each stack is designed as a deflection adjustment roller. The top roller is on the stand fixed, while the lower roller on one relocatable and resilient by means of a hydraulic cylinder Sled is attached. The roller shells are therefore stored at their ends on the associated carrier. The carrier is on the stand or on the slide attached.

Im Gegensatz hierzu stehen Durchbiegungseinstellwalzen vom Mantelhub-Typ, wie sie aus DE 30 04 913 C2 bekannt sind. Hier ist der Walzenmantel nicht auf dem Träger gelagert, sondern relativ zu ihm verschiebbar, so daß die Durchbiegungseinstelleinrichtung gleichzeitig als Belastungsvorrichtung dienen kann.In contrast, there are deflection adjustment rollers of the jacket stroke type, as known from DE 30 04 913 C2 are. Here the roller jacket is not on the carrier stored, but slidable relative to it, so that the deflection adjustment device simultaneously as Can serve loading device.

Der Erfindung liegt die Aufgabe zugrunde, einen Kalander der eingangs beschriebenen Art so weiterzubilden, daß er eine weitere Möglichkeit der Bahnbehandlung bietet.The invention has for its object a calender of the type described in the introduction, that it offers another way of treating the web.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine Durchbiegungseinstellwalze des einen Walzenstapels und eine Durchbiegungseinstellwalze des anderen Walzenstapels vom Mantelhub-Typ und einander benachbart sind und einen unter Ausnutzung des Mantelhubs schließbaren Zusatznip bilden können, und daß die Wirkrichtung der Durchbiegungseinstelleinrichtung wahlweise zum zugehörigen Walzenstapel oder zur anderen Durchbiegungs-einstellwalze des anderen Walzenstapels weist.This object is achieved in that a deflection adjustment roller of the one roller stack and a deflection adjustment roller of the other roller stack of the jacket stroke type and are adjacent to each other and a closable using the coat stroke Can form additional nip, and that the direction of action of Deflection adjustment device optionally to the associated Roll stack or to the other deflection adjustment roller of the other stack of rollers.

Geht die Wirkrichtung zum zugehörigen Walzenstapel, ergibt sich der normale Betrieb des Kalanders. Geht dagegen die Wirkrichtung zur anderen Durchbiegungseinstellwalze, erhält man einen Zusatznip, der für sich allein genutzt werden kann. Wenn die beiden benachbarten Durchbiegungseinstellwalzen einen elastischen Bezug tragen, ergibt sich eine oftmals erwünschte Mattsatinage. Ein weiterer Vorteil liegt darin, daß während des Betriebs mit Zusatznip die anderen Walzen der beiden Walzenstapel ungenutzt sind und daher ausgetauscht oder repariert werden können. Das bedeutet, daß bei einer Reparatur-Notwendigkeit an einer der Zwischenwalzen der Kalander unter Erzeugung einer anderen Papierqualität weiterbetrieben werden kann, was insbesondere für den Online-Betrieb von Vorteil ist. If the direction of action goes to the associated roll stack, the result is the normal operation of the calender. Go against it the direction of action to the other deflection adjustment roller, you get an additional nip that works for itself can be used. If the two neighboring Deflection adjustment rollers have an elastic cover wear, there is often a desired satin finish. Another advantage is that during the Operating the other rollers of the two with additional nip Roll stacks are unused and therefore replaced or can be repaired. That means that with one Need for repair on one of the intermediate rolls of the Calender producing a different paper quality can continue to be operated, especially for the Online operation is an advantage.

Durchbiegungseinstelleinrichtungen sind in den verschiedensten Formen bekannt. Zumeist arbeiten sie mit hydrostatischen Stützvorrichtungen, insbesondere in der Form von die Wirkrichtung bestimmenden Stützelementreihen.Deflection adjusters are in a wide variety Known forms. They mostly work with hydrostatic support devices, particularly in the Form of rows of support elements determining the direction of action.

Günstig ist es daher, daß die Durchbiegungseinstelleinrichtung aus einer Stützelementreihe besteht und mittels einer Stellvorrichtung um einen Winkel versetzbar ist. Hier ergibt sich der Vorteil, daß der bauliche Aufwand für die Stützvorrichtung klein gehalten wird. Außerdem kann eine für den gerichteten Mantelhub empfehlenswerte Führung mit der Stützelementreihe versetzt werden.It is therefore favorable that the deflection adjustment device consists of a row of support elements and means an actuator can be moved by an angle is. The advantage here is that the structural Effort for the support device is kept small. In addition, a recommended for the directional jacket stroke Guide offset with the row of support elements become.

Eine Alternative besteht beispielsweise darin, daß die Durchbiegungseinstelleinrichtung aus zwei gegeneinander versetzten Stützelementreihen besteht, die wahlweise wirksam zu machen sind.An alternative is, for example, that the Deflection adjustment device made of two against each other staggered rows of support elements, which is optional are effective.

Empfehlenswert ist es, daß die Lager für den Träger zumindest der einen Durchbiegungseinstellwalze Exzenter aufweisen, mit denen der Abstand zwischen den benachbarten Durchbiegungseinstellwalzen verkleinerbar ist. Damit ist das neue Prinzip auch dann anwendbar, wenn der Mantelhub allein zum Schließen des Zusatznips nicht ausreicht.It is recommended that the bearings for the carrier at least of a deflection roller eccentric with which the distance between the neighboring Deflection adjustment rollers can be reduced. This means that the new principle can also be used if the jacket stroke alone for closing the additional nip is not sufficient.

Vorteilhaft ist es auch, daß die Exzenter zusammen mit dem Träger durch die Stellvorrichtung um einen Winkel verdrehbar sind. Es genügt daher eine Stellvorrichtung für die Verstellung von Träger und Exzenter. It is also advantageous that the eccentric together with the bracket through the adjusting device at an angle are rotatable. An adjusting device is therefore sufficient for the adjustment of carrier and eccentric.

Die beiden Walzenstapel haben vorzugsweise eine gemeinsame Mittelebene. Dies ist häufig konstruktiv erwünscht, weil am Ständer eine gemeinsame Führung vorgesehen werden kann.The two roll stacks preferably have a common one Midplane. This is often constructively desirable because a joint tour is provided on the stand can be.

In diesem Zusammenhang ist es empfehlenswert, daß die gemeinsame Mittelebene schräg zur Horizontalen verläuft. Durch die Schräglage ergibt sich ein Kalander, dessen Höhe geringer ist als bei einem 10-Walzen-Kalander mit einem vertikalen Walzenstapel und dessen Länge geringer ist als zwei nebeneinander angeordnete 5-Walzen-Kalander mit vertikalem Walzenstapel.In this context it is recommended that the common central plane runs obliquely to the horizontal. Due to the inclined position, there is a calender, the height of which is less than that of a 10-roll calender with a vertical roll stack and its Length is less than two arranged side by side 5-roll calender with vertical roll stack.

Eine Alternative besteht darin, daß die Mittelebenen der beiden Walzenstapel einen Winkel, insbesondere einen spitzen Winkel, miteinander bilden.An alternative is that the middle planes of the two roll stacks an angle, in particular one acute angle, form together.

Von Vorteil ist es auch, daß die Walzenstapel eine ungerade Anzahl von Walzen aufweisen und jeder Nip durch eine harte und eine elastische Walze begrenzt ist und daß die den Zusatznip begrenzenden Durchbiegungseinstellwalzen einen elastischen Bezug tragen. Bei Nutzung beider Walzenstapel ergibt sich eine Glanzsatinage des Papiers, wobei zunächst die eine und dann die andere Bahnseite an den harten, glatten Walzen anliegt. Bei alleiniger Nutzung des Zusatznips dagegen ergibt sich eine Mattsatinage.It is also advantageous that the roll stack is odd Have number of rollers and each nip through a hard and an elastic roller is limited and that the deflection adjusting rollers limiting the additional nip wear an elastic cover. When using both roller stacks result in a glossy satin finish of the Paper, first one and then the other Web side abuts the hard, smooth rollers. at however, only using the additional nip results a satin satin.

Diesen Effekt erreicht man insbesondere mit Kombinationen von Walzenstapeln mit 3, 5 oder 7 Walzen. Hierbei ist es besonders empfehlenswert, wenn beide Walzenstapel je 5 Walzen aufweisen, weil dies eine hohe Gleichmäßigkeit der Papierbahnbehandlung ermöglicht. This effect is achieved in particular with combinations of roller stacks with 3, 5 or 7 rollers. in this connection it is particularly recommended if both roll stacks 5 rollers each, because this is very uniform the paper web treatment enables.

Die Erfindung wird im folgenden anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung näher beschrieben. Hierin zeigen:

Fig. 1
eine schematische Seitenansicht eines erfindungsgemäß Kalanders,
Fig. 2
einen Schnitt durch den Mittelbereich einer Durchbiegungseinstellwalze,
Fig. 3
einen Schnitt durch den Endbereich einer Durchbiegungseinstellwalze und
Fig. 4
eine schematische Darstellung der Lagerung des Trägers einer Durchbiegungseinstellwalze.
The invention is described below with reference to a preferred embodiment in connection with the drawing. Show here:
Fig. 1
2 shows a schematic side view of a calender according to the invention,
Fig. 2
2 shows a section through the central region of a deflection adjustment roller,
Fig. 3
a section through the end portion of a deflection roller and
Fig. 4
is a schematic representation of the storage of the support of a deflection roll.

Ein Kalander 1, der für die Behandlung von Bahnen aus Papier und ähnlichem Material, wie Karton, bestimmt ist, weist einen oberen 5-Walzen-Stapel 2 und einen unteren 5-Walzen-Stapel 3 auf. Der obere Walzenstapel 2 besteht aus der Oberwalze 4, drei Zwischenwalzen 5, 6 und 7 sowie der Unterwalze 8. Der untere Walzenstapel 3 besteht aus der Oberwalze 9, drei Zwischenwalzen 10, 11 und 12 sowie der Unterwalze 13.A calender 1 made for the treatment of webs Paper and similar material, such as cardboard has an upper 5-roll stack 2 and a lower one 5-reel stack 3 on. The upper roll stack 2 consists of the top roller 4, three intermediate rollers 5, 6 and 7 and the lower roller 8. The lower roller stack 3 consists of the top roller 9, three intermediate rollers 10, 11 and 12 and the lower roller 13.

Die Ober- und Unterwalzen 4, 8, 9 und 13 sind Durchbiegungseinstellwalzen vom Mantelhub-Typ, die untereinander den gleichen Aufbau haben können, so daß man mit einer Reservewalze für alle vier Endwalzen auskommt. Wie die Fig. 2 und 3 zeigen, besitzt eine solche Durchbiegungseinstellwalze 4 einen Mantel 14, der über eine Durchbiegungseinstelleinrichtung 15 auf einem im Betrieb drehfest am Ständer 6 gehaltenen Träger 17 abgestützt ist. Die Durchbiegungseinstelleinrichtung 15 besteht in vorliegendem Beispiel aus einer Reihe von hydrostatischen Stützelementen 18, die in bekannter Weise über je eine Druckkammer 19 derartig mit Druckmittel versorgt werden, daß die Durchbiegungseinstelleinrichtung 15 auch als Belastungsvorrichtung dient. An den Enden ist der Walzenmantel 15 auf einem Lagerring 20 gelagert, der in Hubrichtung auf einer Hubführung 21 verschiebbar ist. Der Walzenmantel 14 ist daher über seine gesamte Länge in Hubrichtung beweglich. Außerdem ist bei den Durchbiegungseinstellwalzen noch vorgesehen, daß der Träger 17 mit Hilfe einer Stellvorrichtung 22 um einen Winkel von 180° versetzt werden kann (vgl. den Pfeil 23 in Fig. 2), so daß die Wirkrichtung der Durchbiegungseinstelleinrichtung 15 in die entgegengesetzte Richtung weist, wie dies durch die strichpunktiert angeordnete Stützelementreihe 18' veranschaulicht ist.The top and bottom rollers 4, 8, 9 and 13 are deflection adjustment rollers of the jacket lift type, which are among themselves can have the same structure, so that with one reserve roller for all four end rollers. As FIGS. 2 and 3 show, such a deflection adjustment roller has 4 a jacket 14, which has a Deflection adjustment device 15 on one in operation Supported rotatably supported on the stand 6 support 17 is. The deflection adjustment device 15 exists in the present example from a series of hydrostatic Support elements 18 in a known manner via a pressure chamber 19 each with pressure medium be supplied that the deflection adjustment 15 also serves as a loading device. To the The ends of the roller jacket 15 are on a bearing ring 20 mounted in the stroke direction on a stroke guide 21 is movable. The roller jacket 14 is therefore over its entire length is movable in the stroke direction. Moreover is still provided for the deflection adjustment rollers, that the carrier 17 with the help of an actuator 22 can be offset by an angle of 180 ° (cf. the arrow 23 in Fig. 2), so that the direction of action of Deflection adjuster 15 in the opposite Direction points as this by the dash-dotted line arranged row of support elements 18 'illustrated is.

Die obersten Zwischenwalzen 5 und 10 sind fest am Ständer 16 gelagert. Wenn bei den zugehörigen Oberwalzen 4 und 9 die Durchbiegungseinstelleinrichtung 15 die in Fig. 2 veranschaulichte Lage hat, kann die Papierbahn 24 in den in Durchlaufrichtung ersten Nips 25 und 26 des oberen Walzenstapels 2 bzw. des unteren Walzenstapels 3 mit sehr hoher Streckenlast und damit hoher Druckspannung behandelt werden.The top intermediate rollers 5 and 10 are fixed to the stand 16 stored. If the associated top rollers 4 and 9, the deflection adjuster 15 shown in FIG Fig. 2 has illustrated position, the paper web 24 in the first nips 25 and 26 in the direction of passage the upper roll stack 2 or the lower roll stack 3 with a very high line load and therefore high Compressive stress are treated.

Die Zwischenwalzen 6, 7, 11 und 12 sind je an einem Hebel 27 gelagert, der um eine ständerfeste Schwenkachse schwenkt. Wenn die Durchbiegungseinstelleinrichtungen 15 der Unterwalzen 8 und 13 die in Fig. 2 gestrichelte Lage haben, werden die Nips 28, 29 und 30 des oberen Walzenstapels 2 und die Nips 31, 32 und 33 des unteren Walzenstapels 3 entsprechend belastet. Die Höhe der Belastung ist unabhängig von derjenigen im jeweils ersten Walzenspalt 25 oder 26. Es ergeben sich daher vier Abschnitte, in denen die Papierbahn 24 unterschiedlich behandelt werden kann, so daß sich eine Vielzahl unterschiedlicher Papierqualitäten herstellen läßt.The intermediate rollers 6, 7, 11 and 12 are each on a lever 27 stored, about a fixed pivot axis swings. If the deflection adjusters 15 of the lower rollers 8 and 13 the dashed in Fig. 2 Have the nips 28, 29 and 30 of the top Roll stack 2 and the nips 31, 32 and 33 of the lower Roll stack 3 loaded accordingly. The amount of the burden is independent of that in the first Nip 25 or 26. There are therefore four sections, in which the paper web 24 is different can be treated so that a variety of different Can produce paper qualities.

Zwischen den beiden Walzenstapeln 2 und 3 bleibt im Normalbetrieb ein offener Zusatznip 34, durch den die Papierbahn 24 ungehindert hindurchläuft mit der Folge, daß im oberen Walzenstapel 2 bevorzugt die eine und im unteren Walzenstapel 3 bevorzugt die andere Bahnseite satiniert wird.Between the two roll stacks 2 and 3 remains in the Normal operation an open additional nip 34 through which the Paper web 24 runs through unhindered, with the result that in the upper roll stack 2 preferably one and lower roll stack 3 preferably the other side of the web is satined.

Die Ober- und Unterwalzen 4, 8, 9 und 13 sowie die mittleren Zwischenwalzen 7 und 11 sind elastische Walzen, während die verbliebenen Zwischenwalzen 5, 7, 10 und 12 beheizte harte Walzen sind. Es kommen aber auch andere Kombinationen, beispielsweise mit harten Oberund Unterwalzen, in Betracht.The upper and lower rollers 4, 8, 9 and 13 and the middle intermediate rolls 7 and 11 are elastic rolls, while the remaining intermediate rolls 5, 7, 10 and 12 are heated hard rollers. But it also comes other combinations, for example with hard tops Bottom rolls, into consideration.

Der Abstand zwischen den beiden Durchbiegungseinstellwalzen 9 und 10 ist so gering, daß der Zusatznip 34 unter Ausnutzung des Walzenhubs von beispielsweise 30 bis 40 mm geschlossen werden kann. Hierzu ist es lediglich erforderlich, die Durchbiegungseinstelleinrichtungen 15 der beiden Endwalzen 8 und 9 mit Hilfe der Stellvorrichtung 22 aufeinander zu zu drehen und dann das Druckmittel mit entsprechendem Druck zuzuführen. Mit diesem Zusatznip 34 kann dann eine Mattsatinage durchgeführt werden, da die beiden Biegeeinstellwalzen 8 und 9 einen elastischen Bezug tragen. Ohne wesentlichen zusätzlichen Aufwand ergibt sich daher eine weitere Möglichkeit der Papierbehandlung.The distance between the two deflection adjustment rollers 9 and 10 is so small that the additional nip 34 under Utilization of the roll stroke from, for example, 30 to 40 mm can be closed. For this it is only deflection adjusters 15 of the two end rollers 8 and 9 with the help of the adjusting device 22 towards each other and then that Supply pressure medium with the appropriate pressure. With this additional nip 34 can then be satinized be since the two bending adjustment rollers 8 and 9 wear an elastic cover. Without significant additional There is therefore another possibility paper handling.

Wenn der geöffnete Zusatznip 34 größer ist und der Mantelhub nicht zum Schließen ausreicht, kann gemäß Fig. 4 der Träger 91 der Oberwalze 9 in einer Kalotte 92 gelagert sein, die ihrerseits von einer Exzenterscheibe 93 getragen wird. Letztere ist zusammen mit dem Träger 91 durch die Stellvorrichtung 22 um 180° im Lager 94 drehbar. Auf diese Weise kann der offene Zusatznip 34 auf beispielsweise 80 mm gehalten werden, was auch ein Öffnen der Nips 28 und 29 erleichtert.If the opened additional nip 34 is larger and the jacket stroke 4 is not sufficient for closing, according to FIG the carrier 91 of the top roller 9 is mounted in a spherical cap 92 be in turn by an eccentric 93 will be carried. The latter is together with the carrier 91 by the adjusting device 22 through 180 ° in the bearing 94. In this way, the open additional nip 34 can be opened For example, 80 mm can be held, which is also an opening the nips 28 and 29 relieved.

Die Achsen der Walzen 4 bis 13 liegen etwa in einer gemeinsamen Ebene E, die gegenüber der Horizontalen um 45° geneigt ist. Dementsprechend hat auch der Ständer 16 einen schrägen Verlauf. Er kann daher an zwei Stellen abgestützt werden, nämlich mit einer unteren Stützfläche 35 auf einer gebäudefesten Lagerfläche 36 und mit einer oberen Lagerfläche 37 auf einer oberen gebäudefesten Lagerfläche 38. Die Lagerfläche 37 befindet sich an einem Fuß 39, der am Ständer 16 nahe dessen oberen Ende angebracht ist. Die Lagerflächen 36 und 38 verlaufen horizontal und sind je an einem Betonfundament oder -sockel 40 bzw. 41 ausgebildet. Hierdurch ist der Ständer 16 gegen Schwingungen weitgehend unempfindlich. Der Ständer 16 kann mit geringerer Stabilität als bisher und daher billiger hergestellt werden.The axes of the rollers 4 to 13 lie approximately in a common one Level E, which is opposite to the horizontal Is inclined 45 °. Accordingly, the stand has 16 an oblique course. It can therefore be in two places are supported, namely with a lower support surface 35 on a fixed bearing surface 36 and with an upper bearing surface 37 on an upper building-fixed Storage area 38. The storage area 37 is located itself on a foot 39, the stand 16 near it upper end is attached. The bearing surfaces 36 and 38 run horizontally and are each on a concrete foundation or base 40 or 41 formed. This is the stand 16 largely insensitive to vibrations. The stand 16 can be less stable than so far and therefore cheaper to manufacture.

Der Kalander 1 kann im Online-Betrieb arbeiten. Er befindet sich zwischen der letzten Trockenwalze 42 der Trockenpartie einer Papiermaschine und einer Wickelvorrichtung 43, beispielsweise einer Rollenschneide- und Wickelvorrichtung. Trockenwalze und Wickelvorrichtung befinden sich etwa in gleicher Höhe und oberhalb einer Arbeitsebene 44, die vom Kalander 1 durchsetzt wird. Daher hat die Papierbahn 24 zwischen der Trockenwalze 42 und dem Eingang des Kalanders 1 sowie zwischen dem Ausgang des Kalanders 1 und der Wickelvorrichtung 43 einen verhältnismäßig schwach ansteigenden Verlauf. Dies erleichtert das Einführen der Papierbahn im Online-Betrieb. Der gleiche Vorteil ergibt sich auch, wenn die Papierbahn von der Trockenwalze 42 her unten in den Kalander 1 eingeführt wird und oben zur Wickelvorrichtung 43 hin austritt.The calender 1 can work online. He is between the last drying roller 42 of the Drying section of a paper machine and a winding device 43, for example a slitter and Winder. Drying roller and winding device are at about the same height and above one Working level 44, which is penetrated by the calender 1. Therefore, the paper web 24 has between the drying roller 42 and the entrance of the calender 1 and between the Exit of the calender 1 and the winding device 43 a relatively weakly increasing course. This makes it easier to insert the paper web in online mode. The same advantage arises when the paper web from the drying roller 42 down into the Calender 1 is inserted and the top of the winding device 43 exits.

Eine nur angedeutete Bahneinzugsvorrichtung 45, die beispielsweise mit Seilklemmung arbeitet, führt den Bahnanfang durch sämtliche Nips 25 bis 33 der beiden Walzenstapel 2 und 3 sowie den Zusatznip 34. Es genügt daher ein Einführvorgang für beide Walzenstapel. Die Einführbewegung wird dadurch unterstützt, daß sämtliche Walzen des Kalanders und auch die zugehörigen Leitwalzen je einen eigenen Antrieb 46 besitzen. Die Papierbehandlung ergibt sich dann in Abhängigkeit davon, welche der genannten Nips geschlossen werden. Gestrichelt gezeichnet ist eine zweite Bahneinführungsvorrichtung 47, mit der lediglich der Zusatzspalt 34 versorgt wird. Bei der Mattsatinage einer so eingeführten Bahn besteht die Möglichkeit, an den übrigen Walzen Reparaturen oder eine Auswechslung vorzunehmen. Ein Semimatt-Betrieb ergibt sich beispielsweise, wenn lediglich der oberste Nip 25 benutzt wird.An only indicated web feed device 45, the works with rope clamping, for example Start of path through all nips 25 to 33 of the two Roll stack 2 and 3 and the additional nip 34. It is sufficient hence an insertion process for both roll stacks. The Introductory movement is supported by the fact that all Rolling the calender and also the associated guide rolls each have their own drive 46. The paper treatment then results depending on which one of the nips mentioned are closed. Drawn in dashed lines is a second web insertion device 47, with which only the additional gap 34 is supplied. at The matt satinage of a web introduced in this way exists Possibility of repairs on the other rollers or a To make a replacement. Semimatt operation results for example, if only the top one Nip 25 is used.

Die genaue Neigung des Ständers 16 richtet sich nach den örtlichen Gegebenheiten. Werte, die von 45° nach oben oder unten um etwa 10° abweichen, gehören noch in den bevorzugten Bereich.The exact inclination of the stand 16 depends on the local conditions. Values ranging from 45 ° deviate by about 10 ° above or below still belong in the preferred range.

Die Schrägneigung mit den oben angeordneten Walzenstapeln hat den weiteren Vorteil, daß die Walzen zwecks Auswechslung besser zugänglich sind und beispielsweise mit einem Kran 48 und entsprechender Kransteuerung herausgenommen und eingesetzt werden können. Insbesondere können die Lager der auszuwechselnden Walze mittels einer hydraulischen Stellvorrichtung 49 längs einer Führung senkrecht zur Ebene E herausgefahren werden, wie dies gestrichelt in Fig. 1 gezeigt ist. Als Stellvorrichtung 49 kommt in erster Linie der Kolben eines sich längs des Hebels 27 erstreckenden Hydraulikzylinders in Betracht. In der Außenstellung kann der Kran 48 die Walzenenden unmittelbar fassen und die Walze vertikal abführen.The inclination with the roller stacks arranged at the top has the further advantage that the rollers Substitution are more accessible and for example removed with a crane 48 and corresponding crane control and can be used. In particular can the bearings of the roller to be replaced by means of a hydraulic actuator 49 along a guide be pulled out perpendicular to plane E, as this is shown in dashed lines in Fig. 1. As an actuator 49 comes primarily the piston of one along the lever 27 extending hydraulic cylinder in Consideration. In the outer position, the crane 48 can Hold the roller ends immediately and the roller vertically dissipate.

Claims (8)

  1. Calender (1) for webs of paper or similar material, having two roll stacks (2,3) which each have a controlled deflection roll (4, 8, 9, 13) at at least one end, of which the cover (14) is supported via a deflection control device (15) on a support (17) which is held firmly against rotation, characterized in that a controlled deflection roll (8) of one roll stack (2) and a controlled deflection roll (9) of the other roll stack (3) are of the displaceable cover type and adjacent to each other and can form an additional nip (34) that can be closed by using the cover displacement, and in that the active direction of the deflection control device (15) points as desired towards the associated roll stack (2, 3) or towards the controlled deflection roll (8, 9) of the other roll stack (2, 3).
  2. Calender according to Claim 1, characterized in that the deflection control device (15) has a series of supporting elements (18) which can be offset by an angle by means of an actuating device (22).
  3. Calender according to Claim 1 or 2, characterized in that the bearings (94) for the support (91) of at least the one controlled deflection roll (9) have eccentrics (93) with which the distance between the adjacent controlled deflection rolls (8, 9) can be reduced.
  4. Calender according to Claim 3, characterized in that the eccentric (93), together with the support (91), can be rotated through an angle by the actuating device (22).
  5. Calender according to one of Claims 1 to 4, characterized in that the two roll stacks (2, 3) have a common central plane (E).
  6. Calender according to Claim 5, characterized in that the common central plane (E) runs obliquely with respect to the horizontal.
  7. Calender according to one of Claims 1 to 6, characterized in that the roll stacks (2,3) have an uneven number of rolls, and each nip (25 to 33) is bounded by a hard and a resilient roll, and in that the controlled deflection rolls (8, 9) bounding the additional nip (34) bear a resilient cover.
  8. Calender according to one of Claims 1 to 7, characterized in that the two roll stacks (2, 3) each have 5 rolls.
EP99111771A 1998-07-16 1999-06-18 Calender for paper webs or similar material Expired - Lifetime EP0972877B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19832066A DE19832066C2 (en) 1998-07-16 1998-07-16 Calender for webs of paper or similar material
DE19832066 1998-07-16

Publications (3)

Publication Number Publication Date
EP0972877A2 EP0972877A2 (en) 2000-01-19
EP0972877A3 EP0972877A3 (en) 2000-05-17
EP0972877B1 true EP0972877B1 (en) 2003-08-27

Family

ID=7874335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99111771A Expired - Lifetime EP0972877B1 (en) 1998-07-16 1999-06-18 Calender for paper webs or similar material

Country Status (5)

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US (1) US6336398B1 (en)
EP (1) EP0972877B1 (en)
AT (1) ATE248250T1 (en)
CA (1) CA2277428A1 (en)
DE (2) DE19832066C2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI113071B (en) * 2000-02-21 2004-02-27 Metso Paper Inc Calender
DE10000543A1 (en) * 2000-01-08 2001-07-19 Voith Paper Patent Gmbh calender
DE10041651A1 (en) * 2000-08-24 2002-03-14 Voith Paper Patent Gmbh calender
DE10201349B4 (en) * 2002-01-16 2005-12-22 Voith Paper Patent Gmbh calender
DE102005030760A1 (en) * 2005-07-01 2007-01-04 Voith Patent Gmbh calender
DE102005044956A1 (en) * 2005-09-20 2007-03-22 Voith Patent Gmbh Spreader roll
DE102005044957A1 (en) 2005-09-20 2007-03-22 Voith Patent Gmbh Spreader roll
FI117903B (en) * 2005-11-14 2007-04-13 Metso Paper Inc Load of bearings in a calender roll in a multivalue calendar
DE102006037112B4 (en) * 2006-08-07 2018-05-30 Andritz Küsters Gmbh Method and device for treating a leading web in a machining nip under the action of low line forces
DE102006040683A1 (en) * 2006-08-30 2008-03-06 Voith Patent Gmbh calender

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DE2230139B2 (en) * 1971-06-28 1980-01-31 Escher Wyss Ag, Zuerich (Schweiz) Roller with deflection compensation for the pressure treatment of web-shaped materials
CH587690A5 (en) * 1975-01-29 1977-05-13 Escher Wyss Ag
US4194446A (en) * 1976-08-20 1980-03-25 Valmet 04 Rolls, such as filled calender rolls, having deflection compensation
CH627243A5 (en) * 1978-03-01 1981-12-31 Escher Wyss Ag
AT369063B (en) * 1979-05-10 1982-12-10 Escher Wyss Ag ROLLING DEVICE FOR ROLLING SHEET-SHAPED MATERIALS
DE3004913C2 (en) * 1980-02-09 1982-07-15 Kleinewefers Gmbh, 4150 Krefeld calender
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DE3216182C2 (en) * 1982-04-30 1994-02-24 Kleinewefers Gmbh, 4150 Krefeld Calenders for paper and other material webs
DE3325385A1 (en) * 1983-07-14 1985-01-31 Kleinewefers Gmbh, 4150 Krefeld PRESSURE TREATMENT ROLLER
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DE4314653C2 (en) * 1993-05-04 1997-01-30 Troester Maschf Paul Multi-purpose calender
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Also Published As

Publication number Publication date
DE19832066A1 (en) 2000-02-17
US6336398B1 (en) 2002-01-08
DE59906745D1 (en) 2003-10-02
ATE248250T1 (en) 2003-09-15
EP0972877A3 (en) 2000-05-17
CA2277428A1 (en) 2000-01-16
EP0972877A2 (en) 2000-01-19
DE19832066C2 (en) 2000-06-08

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