EP0866167B1 - Calendar for paper and similar material in band - Google Patents
Calendar for paper and similar material in band Download PDFInfo
- Publication number
- EP0866167B1 EP0866167B1 EP98103708A EP98103708A EP0866167B1 EP 0866167 B1 EP0866167 B1 EP 0866167B1 EP 98103708 A EP98103708 A EP 98103708A EP 98103708 A EP98103708 A EP 98103708A EP 0866167 B1 EP0866167 B1 EP 0866167B1
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- EP
- European Patent Office
- Prior art keywords
- tension
- frame
- roll
- calender according
- rods
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
Definitions
- the invention relates to a calender for paper and similar web material, with a roll stack, of the at least four rollers with associated bearing blocks has, with a stand on the bearing blocks held or guided approximately vertically, as well as with a a load device having a support block, from above onto the bearing blocks of the top roller and / or from below onto the bearing blocks of the lower roller acts.
- Multi-roll calenders of this type are, for example, out DE 28 23 738 C2 and EP 0 732 443 A1 are known.
- the roll stack includes a variety of rollers, for example 14 pieces.
- the roll stack is replaced by a lower one Load device brought into the working position and by an upper load device with forces which, together with the weight of the rollers, weighed down Determine the compressive stress in the nips.
- the lower one Load device is supported at the foot of the stand, the top loading device on its head from.
- a support block of the lower load device supports itself at the foot of the stand, a support block of the upper loading device on its head.
- Calenders have recently become known (DE-U-295 04 034), in which the number of rolls is reduced to five to eight, but in order to achieve the same satin result, the roll temperatures are increased and the roll gaps are subjected to greater loads, for example with a medium one Compressive stress in the lowest working gap of more than 42 N / mm 2 . Because of the greater load forces, these calenders require stands with a larger dimension.
- the invention has for its object a multi-roll calender of the type described in the introduction, which is also suitable for high loads.
- this object is achieved by tie rods, at both ends of the roll along the roll stack run and their exciting one hand with a bearing block the top roller or - if available - with the Support block from its loading device and on the other hand with a bearing block of the lower roller or - if available - with the support block from its loading device are connected, to enable an expansion of the tie rods with one Exciting blocks connected to the tie rods on the stand are led.
- the stand is relieved by the tie rods.
- the of forces applied to the loading device essentially absorbed by an expansion of the tie rods.
- the stand that is still necessary to The main thing is keeping the reels in the stack due to the weights of the rollers and other components loaded.
- the tie rods can also be easily retrofitted Attach. You can therefore use existing stands also use for modern calenders where one higher stress occurs. With such a modification using the existing stand Keep conversion time and conversion costs low.
- tie rods between the roll stack and stand run. At this point is in everything Usually there is still space for the tie rods.
- tie rods with a section their length are attached to the stand, which is in Area of a bearing block attached to the stand. This is the position of the tie rod on the stand fixed without interfering with the operation becomes. At least one end of the tie rod is required for the Stretch free.
- tie rods in the area of upper exciting attached to the stand and the lower Exciting formed on a hanging part of the tie rod are. Because the tie rods are based on their own weight Maintain their vertical course are sufficient simple measures to this course of tie rods secure on the stand.
- the bearing blocks of the top roller and the upper clamping ends are arranged fixed to the stand and the lower tensioners a support block for the Wear the load device located below.
- This Load device generates the desired one hand Line load and on the other hand enables quick lowering to open the nip.
- the bearing blocks of the top roller are attached to the stand and have a holder, which is penetrated by a tie rod and a support for its upper, exciting shape shaped as a head forms.
- the tie rods therefore do not need Stand to be attached, but can also be from be held in a fixed bearing block.
- top Ends of the tie rods are attached to the stand and the bearing blocks on the side opposite the stand the top roller.
- the tie rods on the stand attached they can in turn be used as carriers fixed bearing blocks.
- the tie rods are at least partially threaded rods and at least some exciting people trained as mothers. This is useful if the effective length of the tie rod discontinued for the first time or as a result of a roller exchange or a roll reduction a change in length must be made.
- the tie rods are formed as plates that have an essential Part of the height and width of the side panels of the stand.
- Such a plate can be tight can be arranged next to the stand and takes hardly any additional Space, which is cheap for a conversion.
- You can also use thin plates because of the Width of the stator side parts is relatively large Reach cross sections so that the tension in the Plates does not exceed the permissible limit values.
- the exciting features of the plate can also be easily realized. So the upper exciting between Stator and bearing blocks of the top roller arranged and be firmly connected to both. Furthermore, the lower tensioning firmly with the lower loading device supporting support block connected his.
- a vertical longitudinal groove of the support block receives the plate and a wedge partially a transverse groove in the support block and partly one Cross groove penetrated in the plate.
- brackets are guided on the stand. These brackets need to be on the one hand a movement of the tie rods for the purpose of stretching allow, but on the other hand should buckle or the like. prevent the tie rod.
- brackets through in existing guides of the stand gripping rear grip strips attached to the tie rod educated. But there are also other design features considered, such as stands and tie rods encompassing parentheses.
- the roll stack is hard and having soft rollers and that the soft rollers wear a cover made of elastic plastic. Because such Plastic covers only require minimal grinding, can use tie rods without length adjustment be, for example, the mentioned plates.
- the multi-roll calender 1 of FIGS. 1 and 2 has one Stand 2, one side part in the drawing is visible.
- a roll stack 3 has an upper roll 4, a lower roller 5 and in between eight intermediate rollers 6 on. The number of rollers in the stack can also be larger and preferably less than ten.
- the roller of the stack 103 has an elastic cover. The rollers are supported by a bearing block at each end held.
- the bearing blocks 7 of the top roller 4 are attached to the upper end of the stand 2, for example by screws and terminal strips.
- the bearing blocks 9 of the Bottom roller 5 are held vertically slidably on the stand 2.
- the bearing blocks 10 of the intermediate rollers 6 are each via a lever 11 with a fixed on the stand Pivotal point 12 connected. There is at both roller ends a loading device 13 with a support block 14. It consists of hydraulic piston-cylinder units, with which the lower roller 5 and the intermediate rollers 6 in the roller stack pressed up against the upper roller 4 and opening the nips quickly can be lowered.
- a tie rod 15 in shape a threaded rod at the ends, the at the upper end 16 a trained as a mother Head 17 and a nut 19 at the lower end 18 wearing.
- the rod-shaped tie rod 15 penetrates one Bracket 20 on the bearing block 7 of the top roller 4, the Top of the bracket 20 a support surface 21 for the mother 17 forms.
- the upper end of the tie rod 15 is therefore fixed on stand 2. All of the rest Tie rod 15 hangs down freely and can therefore when up by the loading device 13 directed pressure is exerted on the roll stack, stretch down.
- the support block 14 is at the usual Guide 22 of the stand 2 guided vertically. The Tie rod 15 maintains its vertical position in all operating conditions at.
- the tie rods 115 have the shape of a plate that extends over one substantial part of the height of the stand 102 and above a substantial part of the width of its side parts extend.
- the upper clamping end 116 is by means of Screws 123 attached to the upper end 108 of the stand 102, while the rest of the tie rod 115 is free hangs down.
- On the opposite of the stand 102 Side is the bearing block 107 of the top roller 104 attached to tie rod 115 by means of screws 124.
- the lower clamping end 118 is by means of a wedge 125 connected to the support block 114.
- the tie rod 115 extends through a longitudinal groove 126 of the support block 114.
- the wedge 125 extends partially through a Cross groove 127 in the tie rod 115 and partly through a Cross groove 128 in the support block 114.
- a bracket 129 is formed by grip strips, which on protrusions 130 of the support block 114 are screwed and the overlap the usual guide 122 of the stand 102.
- the Brackets 129 leave the tie rod 115 as much Play so that he can stretch freely when he is straining is.
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- Treatment Of Fiber Materials (AREA)
Description
Die Erfindung bezieht sich auf einen Kalander für Papier und ähnliches Bahnmaterial, mit einem Walzenstapel, der mindestens vier Walzen mit zugehörigen Lagerblöcken aufweist, mit einem Ständer, an dem Lagerblöcke gehalten oder etwa vertikal geführt sind, sowie mit einer einen Stützblock aufweisenden Belastungsvorrichtung, die von oben auf die Lagerblöcke der Oberwalze und/oder von unten auf die Lagerblöcke der Unterwalze wirkt.The invention relates to a calender for paper and similar web material, with a roll stack, of the at least four rollers with associated bearing blocks has, with a stand on the bearing blocks held or guided approximately vertically, as well as with a a load device having a support block, from above onto the bearing blocks of the top roller and / or from below onto the bearing blocks of the lower roller acts.
Mehrwalzen-Kalander dieser Art sind beispielsweise aus DE 28 23 738 C2 und EP 0 732 443 A1 bekannt. Der Walzenstapel umfaßt eine Vielzahl von Walzen, beispielsweise 14 Stück. Der Walzenstapel wird durch eine untere Belastungsvorrichtung in die Arbeitsposition gebracht und durch eine obere Belastungsvorrichtung mit Kräften belastet, die zusammen mit dem Gewicht der Walzen die Druckspannung in den Walzenspalten bestimmen. Die untere Belastungsvorrichtung stützt sich am Fuß des Ständers, die obere Belastungsvorrichtung an dessen Kopf ab. Ein Stützblock der unteren Belastungsvorrichtung stützt sich am Fuß des Ständers, ein Stützblock der oberen Belastungsvorrichtung an dessen Kopf ab.Multi-roll calenders of this type are, for example, out DE 28 23 738 C2 and EP 0 732 443 A1 are known. The roll stack includes a variety of rollers, for example 14 pieces. The roll stack is replaced by a lower one Load device brought into the working position and by an upper load device with forces which, together with the weight of the rollers, weighed down Determine the compressive stress in the nips. The lower one Load device is supported at the foot of the stand, the top loading device on its head from. A support block of the lower load device supports itself at the foot of the stand, a support block of the upper loading device on its head.
In neuerer Zeit sind Kalander bekannt geworden (DE-U-295 04 034), bei denen die Zahl der Walzen auf fünf bis acht vermindert, zur Erzielung des gleichen Satinageresultats aber die Walzentemperaturen erhöht sind und die Walzenspalte stärker belastet werden, beispielsweise mit einer mittleren Druckspannung im untersten Arbeitsspalt von mehr als 42 N/mm2. Diese Kalander benötigen wegen der größeren Belastungskräfte stärker dimensionierte Ständer.Calenders have recently become known (DE-U-295 04 034), in which the number of rolls is reduced to five to eight, but in order to achieve the same satin result, the roll temperatures are increased and the roll gaps are subjected to greater loads, for example with a medium one Compressive stress in the lowest working gap of more than 42 N / mm 2 . Because of the greater load forces, these calenders require stands with a larger dimension.
Bei Zwei-Walzen-Walzenpressen (DE 42 31 472 A1 und US-A-3 921 514) ist es bekannt, die Lagerblöcke der beiden Walzen unter Einschluß der Belastungsvorrichtung durch Zuganker zu verbinden. Hierbei kann ein Ständer entfallen.In two-roll presses (DE 42 31 472 A1 and US-A-3 921 514) it is known the bearing blocks of the two Rolling including the loading device to connect by tie rods. This can be a stand omitted.
Der Erfindung liegt die Aufgabe zugrunde, einen Mehrwalzen-Kalander der eingangs beschriebenen Art anzugeben, der auch für hohe Belastungen geeignet ist.The invention has for its object a multi-roll calender of the type described in the introduction, which is also suitable for high loads.
Diese Aufgabe wird erfindungsgemäß gelöst durch Zuganker, die an beiden Walzenenden längs des Walzenstapels verlaufen und deren Spannenden einerseits mit einem Lagerblock der Oberwalze oder - wenn vorhanden - mit dem Stützblock von dessen Belastungsvorrichtung und andererseits mit einem Lagerblock der Unterwalze oder - wenn vorhanden - mit dem Stützblock von dessen Belastungsvorrichtung verbunden sind, wobei zur Ermöglichung einer Dehnung der Zuganker die mit dem einen Spannende der Zuganker verbundenen Blöcke am Ständer geführt sind.According to the invention, this object is achieved by tie rods, at both ends of the roll along the roll stack run and their exciting one hand with a bearing block the top roller or - if available - with the Support block from its loading device and on the other hand with a bearing block of the lower roller or - if available - with the support block from its loading device are connected, to enable an expansion of the tie rods with one Exciting blocks connected to the tie rods on the stand are led.
Durch die Zuganker wird der Ständer entlastet. Die von der Belastungsvorrichtung aufgebrachten Kräfte werden im wesentlichen durch eine Dehnung der Zuganker aufgenommen. Der Ständer, der nach wie vor notwendig ist, um die Walzen im Stapel zu halten, wird hauptsächlich durch die Gewichte der Walzen und weiterer Bauteile belastet. Die Zuganker lassen sich auch leicht nachträglich anbringen. Man kann daher vorhandene Ständer auch für moderne Kalander verwenden, bei denen eine höhere Belastung auftritt. Durch einen solchen Umbau unter Verwendung des vorhandenen Ständers lassen sich Umbauzeit und Umbaukosten niedrig halten.The stand is relieved by the tie rods. The of forces applied to the loading device essentially absorbed by an expansion of the tie rods. The stand that is still necessary to The main thing is keeping the reels in the stack due to the weights of the rollers and other components loaded. The tie rods can also be easily retrofitted Attach. You can therefore use existing stands also use for modern calenders where one higher stress occurs. With such a modification using the existing stand Keep conversion time and conversion costs low.
Vorteilhaft ist, daß die Zuganker zwischen Walzenstapel und Ständer verlaufen. An dieser Stelle ist in aller Regel noch Platz für die Zuganker.It is advantageous that the tie rods between the roll stack and stand run. At this point is in everything Usually there is still space for the tie rods.
Günstig ist es, daß die Zuganker mit einem Abschnitt ihrer Länge am Ständer angebracht sind, der sich im Bereich eines am Ständer befestigten Lagerblocks befindet. Hierdurch ist die Lage des Zugankers am Ständer fixiert, ohne daß dabei die Funktionsweise behindert wird. Mindestens ein Ende der Zuganker ist für die erforderliche Dehnung frei.It is favorable that the tie rods with a section their length are attached to the stand, which is in Area of a bearing block attached to the stand. This is the position of the tie rod on the stand fixed without interfering with the operation becomes. At least one end of the tie rod is required for the Stretch free.
Empfehlenswert ist es, daß die Zuganker im Bereich der oberen Spannenden am Ständer angebracht und die unteren Spannenden an einem hängenden Teil der Zuganker ausgebildet sind. Da die Zuganker schon aufgrund ihres Eigengewichts ihren senkrechten Verlauf beibehalten, genügen einfache Maßnahmen, um diesen Verlauf der Zuganker am Ständer zu sichern.It is recommended that the tie rods in the area of upper exciting attached to the stand and the lower Exciting formed on a hanging part of the tie rod are. Because the tie rods are based on their own weight Maintain their vertical course are sufficient simple measures to this course of tie rods secure on the stand.
Von Vorteil ist es, daß die Lagerblöcke der Oberwalze und die oberen Spannenden ständerfest angeordnet sind und die unteren Spannenden einen Stützblock für die unten angeordnete Belastungsvorrichtung tragen. Diese Belastungsvorrichtung erzeugt einerseits die gewünschte Streckenlast und ermöglicht andererseits eine Schnellabsenkung zum Öffnen der Walzenspalte.It is advantageous that the bearing blocks of the top roller and the upper clamping ends are arranged fixed to the stand and the lower tensioners a support block for the Wear the load device located below. This Load device generates the desired one hand Line load and on the other hand enables quick lowering to open the nip.
Zu empfehlen ist es, daß die Lagerblöcke der Oberwalze am Ständer befestigt sind und eine Halterung aufweisen, die von je einem Zuganker durchsetzt ist und eine Auflage für dessen als Kopf geformtes oberes Spannende bildet. Die Zuganker brauchen daher nicht direkt am Ständer befestigt zu werden, sondern können auch von einem ständerfesten Lagerblock gehalten sein.It is recommended that the bearing blocks of the top roller are attached to the stand and have a holder, which is penetrated by a tie rod and a support for its upper, exciting shape shaped as a head forms. The tie rods therefore do not need Stand to be attached, but can also be from be held in a fixed bearing block.
Eine bevorzugte Alternative besteht darin, daß die oberen Enden der Zuganker am Ständer befestigt sind und auf der dem Ständer gegenüberliegenden Seite die Lagerblöcke der Oberwalze tragen. Wenn die Zuganker am Ständer befestigt sind, können sie ihrerseits als Träger ständerfester Lagerblöcke dienen.A preferred alternative is that the top Ends of the tie rods are attached to the stand and the bearing blocks on the side opposite the stand the top roller. When the tie rods on the stand attached, they can in turn be used as carriers fixed bearing blocks.
Bei einer Ausführungsform sind die Zuganker als zumindest stellenweise mit Gewinde versehene Stangen und zumindest einige Spannenden als Mutter ausgebildet. Dies ist zweckmäßig, wenn die wirksame Länge der Zuganker erstmals eingestellt oder in Folge eines Walzenaustauschs oder einer Walzenreduzierung eine Längenänderung vorgenommen werden muß.In one embodiment, the tie rods are at least partially threaded rods and at least some exciting people trained as mothers. This is useful if the effective length of the tie rod discontinued for the first time or as a result of a roller exchange or a roll reduction a change in length must be made.
Gemäß einer bevorzugten Ausführungsform sind die Zuganker als Platten ausgebildet, die sich über einen wesentlichen Teil der Höhe und der Breite der Seitenteile des Ständers erstrecken. Eine solche Platte kann dicht neben dem Ständer angeordnet werden und nimmt kaum zusätzlichen Raum ein, was für einen Umbau günstig ist. Außerdem lassen sich auch mit dünnen Platten wegen der Breite der Ständerseitenteile verhältnismäßig große Querschnitte erreichen, so daß die Zugspannung in den Platten die zulässigen Grenzwerte nicht überschreitet. Auch lassen sich die Spannenden der Platte leicht verwirklichen. So können die oberen Spannenden zwischen Ständer und Lagerblöcken der Oberwalze angeordnet und mit beiden fest verbunden sein. Desweiteren können die unteren Spannenden fest mit einem die untere Belastungsvorrichtung abstützenden Stützblock verbunden sein. According to a preferred embodiment, the tie rods are formed as plates that have an essential Part of the height and width of the side panels of the stand. Such a plate can be tight can be arranged next to the stand and takes hardly any additional Space, which is cheap for a conversion. You can also use thin plates because of the Width of the stator side parts is relatively large Reach cross sections so that the tension in the Plates does not exceed the permissible limit values. The exciting features of the plate can also be easily realized. So the upper exciting between Stator and bearing blocks of the top roller arranged and be firmly connected to both. Furthermore, the lower tensioning firmly with the lower loading device supporting support block connected his.
Von Vorteil ist es auch, daß eine vertikale Längsnut des Stützblocks die Platte aufnimmt und ein Keil teilweise eine Quernut im Stützblock und teilweise eine Quernut in der Platte durchsetzt. Hierbei bedarf es nur geringfügiger Änderungen und Ergänzungen der vorhandenen Bauteile, um einen Kalander nachträglich mit Zugankern zu versehen.It is also advantageous that a vertical longitudinal groove of the support block receives the plate and a wedge partially a transverse groove in the support block and partly one Cross groove penetrated in the plate. This is only necessary minor changes and additions to the existing ones Components for retrofitting a calender with tie rods to provide.
Günstig ist es ferner, daß die Zuganker durch Halterungen am Ständer geführt sind. Diese Halterungen müssen einerseits eine Bewegung der Zuganker zwecks Dehnung zulassen, sollen aber andererseits ein Ausknicken o.dgl. der Zuganker verhindern.It is also favorable that the tie rods by brackets are guided on the stand. These brackets need to be on the one hand a movement of the tie rods for the purpose of stretching allow, but on the other hand should buckle or the like. prevent the tie rod.
Bei einer bevorzugten Ausführungsform sind die Halterungen durch in vorhandene Führungen des Ständers greifende, am Zuganker angebrachte Hintergriffleisten gebildet. Es kommen aber auch andere Konstruktionsmerkmale in Betracht, beispielsweise Ständer und Zuganker umgreifende Klammern.In a preferred embodiment, the brackets through in existing guides of the stand gripping rear grip strips attached to the tie rod educated. But there are also other design features considered, such as stands and tie rods encompassing parentheses.
Empfehlenswert ist es auch, daß der Walzenstapel harte und weiche Walzen aufweist und daß die weichen Walzen einen Bezug aus elastischem Kunststoff tragen. Da solche Kunststoffbezüge nur minimales Abschleifen erfordern, können Zuganker ohne Längenverstellung verwendet werden, beispielsweise die erwähnten Platten.It is also recommended that the roll stack is hard and having soft rollers and that the soft rollers wear a cover made of elastic plastic. Because such Plastic covers only require minimal grinding, can use tie rods without length adjustment be, for example, the mentioned plates.
Die Erfindung wird nachstehend anhand in der Zeichnung dargestellter bevorzugter Ausführungsbeispiele näher erläutert. Es zeigen:
- Fig. 1
- eine schematische Seitenansicht eines erfindungsgemäßen Mehrwalzen-Kalanders,
- Fig. 2
- eine Teildraufsicht auf den Kalander der Fig. 1,
- Fig. 3
- eine schematische Seitenansicht einer zweiten Ausführungsform,
- Fig. 4
- einen Schnitt längs der Linie A-A in Fig. 3 und
- Fig. 5
- das untere Spannende eines plattenförmigen Zugankers in perspektivischer Darstellung.
- Fig. 1
- 2 shows a schematic side view of a multi-roll calender according to the invention,
- Fig. 2
- 2 shows a partial top view of the calender of FIG. 1,
- Fig. 3
- 2 shows a schematic side view of a second embodiment,
- Fig. 4
- a section along the line AA in Fig. 3 and
- Fig. 5
- the lower clamping end of a plate-shaped tie rod in a perspective view.
Der Mehrwalzen-Kalander 1 der Fig. 1 und 2 besitzt einen
Ständer 2, dessen eines Seitenteil in der Zeichnung
sichtbar ist. Ein Walzenstapel 3 weist eine Oberwalze
4, eine Unterwalze 5 und dazwischen acht Zwischenwalzen
6 auf. Die Zahl der Walzen im Stapel kann auch größer
und vorzugsweise kleiner als zehn sein. Ein Teil der
Zwischenwalzen 6, beispielsweise die 3., 5., 6. und
8. Walze des Stapels 103 trägt einen elastischen Bezug.
Die Walzen werden an beiden Enden von je einem Lagerblock
gehalten. Die Lagerblöcke 7 der Oberwalze 4 sind
am oberen Ende des Ständers 2 befestigt, beispielsweise
durch Schrauben und Klemmleisten. Die Lagerblöcke 9 der
Unterwalze 5 sind vertikal gleitbar am Ständer 2 gehalten.
Die Lagerblöcke 10 der Zwischenwalzen 6 sind je
über einen Hebel 11 mit einem am Ständer festgelegten
Drehpunkt 12 verbunden. An beiden Walzenenden gibt es
eine Belastungsvorrichtung 13 mit einem Stützblock 14.
Sie besteht aus hydraulischen Kolben-Zylinder-Einheiten,
mit denen die Unterwalze 5 und die Zwischenwalzen
6 im Walzenstapel nach oben gegen die Oberwalze 4 gedrückt
werden und zum Öffnen der Walzenspalte rasch
abgesenkt werden können.The multi-roll calender 1 of FIGS. 1 and 2 has one
An beiden Walzenenden befindet sich zwischen dem Walzenstapel
3 und dem Ständer 1 ein Zuganker 15 in Gestalt
einer an den Enden mit Gewinde versehenen Stange,die
am oberen Spannende 16 einen als Mutter ausgebildeten
Kopf 17 und am unteren Spannende 18 eine Mutter 19
trägt. Der stangenförmige Zuganker 15 durchsetzt eine
Halterung 20 am Lagerblock 7 der Oberwalze 4, wobei die
Oberseite der Halterung 20 eine Auflagefläche 21 für
die Mutter 17 bildet. Das obere Ende des Zugankers 15
ist daher am Ständer 2 festgelegt. Der gesamte übrige
Zuganker 15 hängt frei nach unten und kann sich daher,
wenn durch die Belastungsvorrichtung 13 ein nach oben
gerichteter Druck auf den Walzenstapel ausgeübt wird,
nach unten dehnen. Der Stützblock 14 ist an der üblichen
Führung 22 des Ständers 2 vertikal geführt. Der
Zuganker 15 behält seine vertikale Lage bei allen Betriebszuständen
bei.At both ends of the roller is between the
Auf diese Weise werden die gesamten Belastungskräfte
vom Zuganker 15 aufgenommen. Der Ständer 2 merkt von
dieser Belastung nichts. Er hat lediglich das gesamte
Gewicht des Walzenstapels 3, der Belastungsvorrichtung
13 und des Zugankers 15 aufzunehmen. Daher lassen sich
sehr hohe Streckenlasten erzielen, ohne daß der Ständer
2 übermäßig belastet wird.This way the total load forces
taken up by the
Bei der Ausführungsform nach den Fig. 3 bis 5 werden für entsprechende Teile um 100 erhöhte Bezugszeichen verwendet.In the embodiment according to FIGS. 3 to 5 for corresponding parts, reference numbers increased by 100 used.
Unterschiedlich ist im wesentlichen, daß die Zuganker
115 die Form einer Platte haben, die sich über einen
wesentlichen Teil der Höhe des Ständers 102 und über
einen wesentlichen Teil der Breite seiner Seitenteile
erstrecken. Das obere Spannende 116 ist mit Hilfe von
Schrauben 123 am oberen Ende 108 des Ständers 102 befestigt,
während der übrige Teil des Zugankers 115 frei
nach unten hängt. Auf der dem Ständer 102 gegenüberliegenden
Seite ist der Lagerblock 107 der Oberwalze 104
mit Hilfe von Schrauben 124 am Zuganker 115 befestigt.
Das untere Spannende 118 ist mit Hilfe eines Keils 125
mit dem Stützblock 114 verbunden. Der Zuganker 115 erstreckt
sich durch eine Längsnut 126 des Stützblocks
114. Der Keil 125 erstreckt sich teilweise durch eine
Quernut 127 im Zuganker 115 und teilweise durch eine
Quernut 128 im Stützblock 114. Eine Halterung 129 wird
durch Hintergriffsleisten gebildet, die an Vorsprüngen
130 des Stützblocks 114 angeschraubt werden und die
übliche Führung 122 des Ständers 102 übergreifen. Die
Halterungen 129 belassen dem Zuganker 115 so viel
Spiel, daß er sich frei dehnen kann, wenn er belastet
ist.The main difference is that the
In den Fig. 1 und 3 ist noch angedeutet, daß an den
Hebeln 11 bzw. 111 Kompensationsvorrichtungen 30 bzw.
130 angreifen können, mit denen die überhängenden Gewichte
der Walzen kompensiert werden. Hierdurch werden
Gewichtskräfte aus dem Stapel auf den Ständer übertragen.1 and 3 is also indicated that at the
Claims (13)
- Calender for paper and similar web material, comprising a roll stack (3; 103) having at least four rolls (4, 5, 6; 104; 105, 106) with associated bearing blocks (7, 9, 10; 107, 109, 110), a frame (2; 202) on which the bearing blocks are held or approximately vertically guided, and a loading device (13; 113) which has a support block (14; 114) and acts from above on the bearing blocks (7; 107) of the top roll (4; 104) and/or from below on the bearing blocks (9; 109) of the bottom roll (5, 105), characterised by tension rods (15; 115) which extend along the roll stack (3; 103) at both roll ends and the tension ends (16, 18; 116, 118) of which are connected, on the one hand, to a bearing block (7; 107) of the top roll (4; 104) or, if present, to the support block of its loading device and, on the other hand, to a bearing block (9; 109) of the bottom roll (5; 105) or, if present, to the support block (14; 114) of its loading device (13; 113), the support blocks (14; 114) connected to one tension end of the tension rods (15; 115) being guided on the frame (2; 102) in order to allow for elongation of the tension rods.
- Calender according to claim 1, characterised in that the tension rods (15; 115) extend between the roll stack (3; 103) and the frame (2; 102).
- Calender according to claim 1 or claim 2, characterised in that the tension rods (15; 115) are mounted on the frame (2; 102) via part of their length situated in the region of a bearing block (7; 107) fixed to the frame.
- Calender according to one of claims 1 to 3, characterised in that the tension rods (15; 115) are mounted on the frame (2; 102) in the region of the upper tension ends (16; 116) and the lower tension ends (18; 118) are formed on a suspended part of the tension rods.
- Calender according to one of claims 1 to 4, characterised in that the bearing blocks (7; 107) of the top roll (4; 104) and the upper tension ends (16; 116) are fixedly arranged on the frame and the lower tension ends (18; 118) bear a support block (14; 114) for the loading device (13; 113) arranged at the bottom.
- Calender according to one of claims 1 to 5, characterised in that the bearing blocks (7) of the top roll (4) are fixed to the frame (2) and have a holder (20) which is traversed by a respective tension rod (15) and forms a support (21) for its upper tension end (16) in the form of a head.
- Calender according to one of claims 1 to 5, characterised in that the upper tension ends (118) of the tension rods (115) are fixed to the frame (102) and bear the bearing blocks (107) of the top roll (104) on the side opposite the frame.
- Calender according to one of claims 1 to 7, characterised in that the tension rods (15) are in the form of rods provided at least in places with threads and at least some of the tension ends (16, 18) are in the form of nuts.
- Calender according to one of claims 1 to 7, characterised in that the tension rods (115) are in the form of plates extending over a substantial part of the height and width of the side parts of the frame (102).
- Calender according to claims 5 and 9, characterised in that a vertical longitudinal groove (126) in the support block (114) receives the plate and a wedge (125) partially traverses a transverse groove (127) in the support block (114) and partially traverses a transverse groove (128) in the plate.
- Calender according to one of claims 1 to 9, characterised in that the tension rods (115) are guided on the frame (102) by holders (126, 127).
- Calender according to claim 11, characterised in that the holders (126) are formed by rear grip strips mounted on the tension rod (115) and engaging in guides (122) present on the frame (102).
- Calender according to one of claims 1 to 12, characterised in that the roll stack (3; 103) has hard rolls and soft rolls and that the soft rolls (110') bear a coating (129) of flexible plastic.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19711241 | 1997-03-18 | ||
| DE19711241A DE19711241C2 (en) | 1997-03-18 | 1997-03-18 | Calender for paper and similar web material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0866167A1 EP0866167A1 (en) | 1998-09-23 |
| EP0866167B1 true EP0866167B1 (en) | 2002-06-12 |
Family
ID=7823769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98103708A Expired - Lifetime EP0866167B1 (en) | 1997-03-18 | 1998-03-03 | Calendar for paper and similar material in band |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5988055A (en) |
| EP (1) | EP0866167B1 (en) |
| DE (2) | DE19711241C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19820087B4 (en) * | 1998-05-06 | 2005-06-23 | Eduard Küsters Maschinenfabrik GmbH & Co. KG | Calender for the treatment of a web |
| FI114405B (en) * | 1999-09-24 | 2004-10-15 | Metso Paper Inc | Calender and method for calendering a paper or board web |
| US6578473B1 (en) * | 2001-12-20 | 2003-06-17 | Metso Paper, Inc. | Calender with adjustable roll supports |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3921514A (en) * | 1973-02-08 | 1975-11-25 | Escher Wyss Ltd | Rolling mill |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US509930A (en) * | 1893-12-05 | Machine | ||
| DE16963C (en) * | W. R. SCHÜRMANN in Düsseldorf | Innovations to roll and bow calenders | ||
| US3369483A (en) * | 1965-04-14 | 1968-02-20 | Kleinewefers Soehne J | Adjusting device for fast venting and roller fine adjustment, especially for paper satining calenders |
| DE2823738C2 (en) * | 1978-05-31 | 1985-11-07 | Kleinewefers Gmbh, 4150 Krefeld | Method for leveling (smoothing) a paper web |
| US4501197A (en) * | 1983-10-19 | 1985-02-26 | Beloit Corporation | Supercalender edge nip relieving |
| US4510859A (en) * | 1984-01-23 | 1985-04-16 | Beloit Corporation | Supercalender NIP relieving arrangement |
| JPS6290394A (en) * | 1985-10-14 | 1987-04-24 | 石川島播磨重工業株式会社 | Paper passing method in multistage supercalender |
| DE3711334A1 (en) * | 1987-04-03 | 1988-10-13 | Escher Wyss Gmbh | DEVICE FOR GUIDING THE ROLLS OF AN ESSENTIAL VERTICAL CALANDER |
| DE4231472C2 (en) * | 1991-10-10 | 1996-10-31 | Voith Gmbh J M | Roller press for pressing a running web, in particular a paper web |
| DE29504034U1 (en) * | 1995-03-09 | 1995-05-04 | Voith Sulzer Finishing GmbH, 47803 Krefeld | Calender for the two-sided treatment of a paper web |
| DE19508352B4 (en) * | 1995-03-09 | 2005-07-21 | Voith Paper Patent Gmbh | Calender for the treatment of a paper web |
-
1997
- 1997-03-18 DE DE19711241A patent/DE19711241C2/en not_active Expired - Fee Related
-
1998
- 1998-03-03 EP EP98103708A patent/EP0866167B1/en not_active Expired - Lifetime
- 1998-03-03 DE DE59804381T patent/DE59804381D1/en not_active Expired - Lifetime
- 1998-03-13 US US09/041,971 patent/US5988055A/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3921514A (en) * | 1973-02-08 | 1975-11-25 | Escher Wyss Ltd | Rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19711241A1 (en) | 1998-09-24 |
| US5988055A (en) | 1999-11-23 |
| DE19711241C2 (en) | 2002-08-29 |
| EP0866167A1 (en) | 1998-09-23 |
| DE59804381D1 (en) | 2002-07-18 |
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