DE112007002484T5 - Online multi-roll calender and method for calendering a fibrous web in an online multi-roll calender - Google Patents

Abstract

An on-line multiroll calender (10) in which a paper web or board web (W) which is calendered is arranged to be conveyed through calendering nips (N1-N7) defined by an upper deflection compensating roll (11), a lower deflection compensating roll (11). 18) and two or more intermediate rollers (12-17) disposed between the upper and lower rollers (11, 18), the rollers (11-18) being arranged as a stack of rollers, and wherein the intermediate rollers (12-17) are arranged 17) with respect to the calender body (R) carried by means of hydraulic unloading cylinders (29a) and levers (29b) for relieving the nip load caused by the masses of the bearing cups of the intermediate rollers and associated auxiliary devices , in which
- all intermediate rolls with a hard surface of the roll stack forged thermo rolls (T, 12, 15, 17) are made of steel,
- All intermediate rolls with a soft surface of the roll stack with polymer surface provided calender rolls (C, 13, 14, 16) are, for the ...

Description

FIELD OF THE INVENTION

The The present invention relates to an improvement in running performance an online fiber web machine according to the preamble of claim 1. An online multi-roll calender according to present invention is arranged so that a paper web or cardboard web calendered, conveyed through calendering nips is, by an upper deflection compensating roller, a lower Deflection compensation roll and two or more intermediate rollers formed are located between the upper and the lower roller, wherein the rolls are arranged as a roll stack and the intermediate rolls with respect to the calender body are arranged so that by means of hydraulic unloading cylinders and levers for unloading the nip load to be borne by the masses of the bearing cup the intermediate rolls and auxiliary devices in question, which are based on these refer causes. A method according to the present invention for the online Mehrwalzenkalander according to claim 1 is shown in claim 11.

ASSOCIATED STAND OF THE TECHNIQUE

One Calendering is generally performed to properties such as smoothness and gloss of a web-like material such as to improve a paper web or board web. In a calender, there are gaps between one with a smooth surface provided press roll such as a metal roll and a Roller formed, which is coated with a flexible cover is such as a polymer roll. When calendering occurs the web in a gap that is a calendering nip, formed between the rollers pressed against each other be in the gap, the web due to the effect of the temperature, the moisture and the nip pressure is deformed. The roller with a flexible surface adapts to the shapes of the web surface and presses (presses) evenly opposite side of the web against those with the smooth surface provided press roll.

The border between paper and cardboard is flexible and these materials can be divided into two classes according to their basis weight: papers which consist of a single layer and have a basis weight of 25-300 g / m ² ; and cartons made by a multi-layer process with a basis weight of 150-600 g / m ² . As can easily be seen, the border between paper and cardboard is flexible, as their basis weight makes lightweight boxes lighter than the heaviest paper types. Usually, paper is used for printing and cardboard for packaging.

The Descriptions set forth below are examples of current used fiber web values and they can be significant variations of include the given values.

Printing papers, which are made on the basis of mechanical pulp, d. H. wood-containing printing papers, include newsprint, uncoated magazine paper and coated magazine paper.

Newsprint consists either entirely of mechanical pulp or may contain a little bleached softwood pulp (0-15%) and / or recycled fiber may replace some of the mechanical pulp. Ala general values for newsprint may apply: basis weight 40-48.8 g / m ² , ash content 0-20%, PPS-s10 roughness (hand) 3.0-4.5 μm, Bendtsen roughness 100-200 ml / min, density 600-750 kg / m ³ , brightness 57-63% and opacity 90-96%.

Uncoated magazine paper (SC = supercalendered = supercalendered) usually contains mechanical pulp in 50-70%, bleached softwood pulp in 10-25% and fillers in 15-30%. Typical values for calendered SC paper (containing, inter alia, SC-C, SC-B and SC-A / A +) are 40-60 g / m ² basis weight, 0-35% ash, Hunter gloss < 20-50%, PPS-s10 Roughness (Grip) 1.0-2.5 μm, Density 700-1250 kg / m ³ , Brightness 62-70% and Opacity 90-95%.

Coated magazine paper (LWC = light weight coated) contains mechanical pulp in 40-60%, bleached softwood pulp in 25-40% and fillers and coatings (coatings) in 20-35%. The following values can be taken as general values for LWC paper: basis weight 40-70 g / m ² , gloss to Hunter 50-65%, PPS-s10 roughness 0.8-1.5 μm (offset) and 0, 6-1.0 μm (Roto), density 1100-1250 kg / m ³ , brightness 70-75% and opacity 89-94%.

The following values can be assumed as general values for MFC paper (MFC = machine-finished coated): basis weight 50-70 g / m ² , Hunter gloss 25-70%, PPS-s10 roughness 2.2-2 , 8 μm, density 900-950 kg / m ³ , brightness 70-75% and opacity 91-95%.

The following values can be assumed as general values for FCO (FCO = film-coated offset): basis weight 40-70 g / m ² , gloss according to Hunter 45-55%, PPS-s10 roughness 1.5-2.0 μm, density 1000-1050 kg / m ³ , brightness 70-75% and opacity 91-95%.

As general values for MWC paper (MWC = medium weight coated), the following values can be assumed: basis weight 70-90 g / m ² , gloss according to Hunter 65-75%, PPS-s10 roughness 0.6-1 , 0 μm, density 1150-1250 kg / m ³ , brightness 70-75% and opacity 89-94%.

The basis weight of HWC (Heavy Weight Coated) is 100-135 g / m ² and may even be more than double coated.

Out Pulp produced woodfree printing papers d. H. Fine papers are uncoated and coated pulp-based printing papers, in which the proportion of mechanical pulp is less than 10%.

Woodfree non-coated printing papers (WFU) contain bleached birch pulp in 55-80%, bleached softwood pulp in 0-30% and fillers in 10-30%. The values at WFU vary considerably: basis weight 50-90 g / m ² (even 240 g / m ² ), Bendtsen roughness 250-400 ml / min, brightness 86-92% and opacity 83-98%.

In wood-free coated printing papers (WFC), the amounts of coating (brushing) vary greatly according to the requirements and the intended application. The following values are typical of single-coated (single-coat) and double-coated (double-coated) woodfree printing paper: single coated: basis weight 90 g / m ² , Hunter 65-80% gloss, PPS-s10 roughness 0.75-2 , 2 μm, brightness 80-88% and opacity 91-94%, and double-coated: basis weight 130 g / m ² , Hunter 70-80% gloss, PPS-s10 roughness 0.65-0.95 μm, brightness 83-90% and opacity 95-97% The basis weight of release papers varies within the range of 25-150 g / m ² .

Other Fine papers include, but are not limited to, sack kraft paper, tissue paper and paper Wallpapers.

• – Wellkarton mit einer Oberflächenlage (Liner) und einem Fluting
• – Schachtelkarton zum Herstellen von unter anderem Schachteln und Behältnissen, Flüssigkeitsverpackungskartons (FBB, WLC, SBS)
• – Grafische Kartons zum Herstellen von unter anderem Karten, Ordnern, Mappen, Behältnissen, Abdeckungen und dergleichen
• – Tapetenrohpapiere

Cardboard manufacturing uses chemical pulp, mechanical pulp and / or recycled pulp. Cardboards may, among other things, be divided into the following main groups according to their intended uses:

• - Corrugated cardboard with a surface layer (liner) and a fluting
• - Boxboard for the production of, among other things, boxes and containers, liquid packaging boxes (FBB, WLC, SBS)
• - Graphical cartons for making, among other things, cards, folders, folders, containers, covers and the like
• - Wallpaper raw papers

One Multi-slot online calendering is an online (ie on-line calendering in a calendering unit, in the gap between one with a smooth surface Press roll, such as a metal roll, and a roll are formed, which is covered with a flexible coating, such as a polymer roller, which alternately follow each other. A multi-roll calender usually has five to eleven column, that is six to twelve rolls, of which two to five are thermo rolls and four to seven coated (coated) with polymer rolls are. A multi-slit online calender unit For example, it may have eight rollers and seven columns. One Mehrspaltkalander is in the manufacture of, for example, fiber web grades, which are more demanding in terms of their weight characteristics, and extremely glossy paper, such as Magazine paper (magazine paper) required.

Of the Calender can be an integral part of the fiber web machine or Coating machine, making it an on-line calender. The fibrous web of the dryer section becomes the online calender the fiber web machine or coating machine out. If the calender is a separate entity, it becomes an offline calender to which the fibrous web is conveyed by a retractor becomes.

The linear load increases in a multi-nip calender from the upper nip to the lower nip due to gravity. In multi-nip calenders, which are currently in use, roll unloading, which balances gravity and is performed by a cylinder and lever mechanism, is used to eliminate this downwardly increasing linear load to monitor the line of deflection of the roll and also around the roll Roll stack to open quickly. Such a roller unloading system is present in Optiload ^™ quay lands and Twinline ^™ calenders.

The Optiload ^TM Multi-Roll Calender is capable of producing nearly all types of paper. It is particularly suitable for calendering glossy and smooth paper grades. The opto-wheel has six to twelve rollers. It may be arranged in conjunction with the fiber web machine as an on-line calender, or it may form a separate unit.

The chosen calendering process is increasingly an on-line calendering, since higher running speeds for the fiber web machines neces are derlich. At the same time, the on-line calender of the fiber web machine is required to exhibit conforming properties for producing various different types of paper webs with the same roll stack of the calender, thereby enhancing (emphasizing) the role of online runnability diagnostics in the multi-roll calender. In such an on-line run situation of the calender running at high speeds, if the on-line fiber web machine can optionally produce many different types of fiber webs, controlling the geometry of the column of the on-line calender roll stack, that is, the split profile and geometry, must each Fiber web calendered to be optimized fiber web-specific (a sort-optimized type of calender stack operation).

The Object of the present invention is the running behavior of the Online multi-roll calender to improve, the online multi-roll calender for example as an online multi-roll calender for some aforementioned fiber web types and fiber web types can be used.

SUMMARY OF THE INVENTION

• – sämtliche Zwischenwalzen mit einer harten Oberfläche des Walzenstapels geschmiedete Thermowalzen, die aus Stahl hergestellt sind,
• – sämtliche Zwischenwalzen mit einer weichen Oberfläche des Walzenstapels in vorteilhafter Weise als Verbundstruktur ausgebildete mit Polymer an der Oberfläche beschichtete Kalandrierwalzen, für die ein System zum Ausgleichen ihrer Temperatur eingerichtet ist,
• – Fly-Walzen (Führungswalzen) vorhanden, um die Bahn im Inneren des Spaltes und aus diesem heraus zu führen, wobei zumindest eine von ihnen mit einem flexiblen in einem Stück ausgebildeten Verbundmantel versehen ist,
• – Bahnreißerfassungseinrichtungen vorhanden, die optische Bahnreißbeobachtungseinrichtungen, Einrichtungen zum Schneiden der Bahn in Stücke und Einrichtungen zum Verhindern, dass die Bahn in dem Walzenstapel gewickelt wird, umfassen,
• – wobei die Bahn, die kalandriert wird, besonders breit derart eingerichtet ist, dass während des Laufens die Bahn breiter als der Endbereich des Mantels der heißen Thermowalze ist, von der eine beträchtliche Menge an Wärme in die Beschichtung der benachbarten Polymerwalze geleitet oder abgegeben werden kann,
• – erste Aktuatoren vorhanden sind, die einen Versatz der mit Polymer an der Oberfläche beschichteten Kalandrierwalze vorsehen, und erste Mechanismen vorhanden sind zum Befördern der mit Polymer an der Oberfläche versehenen Kalandrierwalze während des Laufs in seitlicher Richtung in Bezug auf die Pressebene des Walzenstapels, und
• – zweite Aktuatoren vorhanden sind, die eine Änderung des Abstandes der Fly-Walze mit dem Verbundmantel von der benachbarten Thermowalze vorsehen, und zweite Mechanismen vorhanden sind zum Vergrößern oder Verringern des Abstandes der Fly-Walze mit dem Verbundmantel von der benachbarten Thermowalze während des Laufes in derartiger Weise, dass die Länge der Bahn in dem Walzenstapel sich dementsprechend ändert.

In accordance with the present invention, in an on-line multi-roll calender

• All intermediate rolls with a hard surface of the roll stack forged thermo rolls, which are made of steel,
• All intermediate rolls with a soft surface of the roll stack advantageously formed as a composite structure coated with polymer surface calendering rolls, for which a system is set up to equalize their temperature,
• - fly rollers (guide rollers) provided to guide the web inside the gap and out therefrom, at least one of which is provided with a flexible integrally formed composite shell,
• Web tear detection means are provided which comprise optical web tear observing means, means for cutting the web into pieces and means for preventing the web from being wound in the roll stack,
• Wherein the web being calendered is particularly broadly arranged so that during travel the web is wider than the end region of the jacket of the hot thermo roll from which a considerable amount of heat can be conducted or delivered into the coating of the adjacent polymer roll .
• There are first actuators providing an offset of the polymer surface-coated calender roll, and first mechanisms are provided for conveying the polymer-surface-provided calender roll during the lateral run with respect to the press plane of the roll stack, and
• Second actuators are provided which provide a change in the distance of the fly roller with the composite shell from the adjacent thermo roll, and second mechanisms are provided for increasing or decreasing the distance of the fly roller with the composite shell from the adjacent thermo roll during the run in such that the length of the web in the roll stack changes accordingly.

• – der Echtzeitzustand des Online-Mehrwalzenkalanders während des Laufs durch Messeinrichtungen und Diagnoseeinrichtungen wird überwacht,
• – die Messeinrichtungen messen zumindest die Schwingung des Kalanderkörpers oder zumindest die Schwingung einer Walze,
• – die Messdaten werden durch eine erste Diagnoseeinrichtung analysiert,
• – vorbehandelte Daten werden zu einem Ober-Level-Automationssystem übermittelt, das als eine zweite Diagnoseeinrichtung in Echtzeit eine Laufverhaltensdiagnoseanalyse zumindest in bezug auf eine Vorbehandlungsschwingungsmessung ausführt, und
• – nachdem die Schwingung bis zu einer zuvor festgelegten Reaktionsgrenze zugenommen hat, wird/werden einer der folgenden zwei Schritte oder die beiden folgenden Schritte ausgeführt:
• – Steuern der ersten Aktuatoren, die den Versatz der mit Polymeroberfläche versehenen Kalandrierwalze vorsehen, während des Onlinekalandrierens derart, dass die mit Polymeroberfläche versehene Kalandrierwalze in seitlicher Richtung in Bezug auf die Pressebene des Walzenstapels versetzt wird,
• – nachdem die Schwingung bis zu der zuvor eingestellten Reaktionsgrenze erhöht worden ist, erfolgt ein Steuern der zweiten Aktuatoren, die eine Änderung des Abstandes der Fly-Walze mit einem Verbundmantel von der benachbarten Thermowalze während des Online-Kalandrierens vorsehen, so, dass der Abstand der Fly-Walze mit einem Verbundmantel von der benachbarten Thermowalze zunimmt oder abnimmt, wodurch die Länge der Bahn in dem Walzenstapel sich demgemäß ändert.

In the method of on-line calendering of a fiber web in the on-line multi-roll calender, by means of which it is possible to optionally calender different fiber web grades online, the following steps are carried out:

• The real-time state of the on-line multi-roll calender is monitored during the run by measuring devices and diagnostic devices,
• The measuring devices measure at least the vibration of the calender body or at least the vibration of a roller,
• The measured data are analyzed by a first diagnostic device,
• Pretreated data is transmitted to a high-level automation system which, as a second diagnostic device, performs real-time diagnostic analysis at least with respect to a pretreatment vibration measurement, and
• - after the vibration has increased to a predetermined reaction limit, one of the following two steps or both of the following steps will be performed:
• Controlling the first actuators providing the offset of the polymerized calendering roll during on-line calendering such that the polymerized calendering roll is offset laterally with respect to the press plane of the roll stack.
• - After the vibration has been increased to the previously set reaction limit, controlling the second actuators, which provide a change in the distance of the fly roller with a composite shell from the adjacent thermo roll during online calendering, such that the distance of the Fly roller with a composite shell from the adjacent thermo roll increases or decreases, whereby the length of the web in the roll stack changes accordingly.

The structure according to the present invention is suitable for the running behavior problems of on-line fiber web machines such as On minimize and eliminate line multi-roll calenders. By means of the present invention, it is possible to optimize the geometry of the nips, that is, the nip profiles of the on-line multi-roll calender roll stack, and the geometry of each fibrous web which is calendered fiber-fiber-specifically. In this context, online refers in particular also to the control of the running behavior that results during a running situation so that no tearing in the web is effected, but the fiber web continuously without stopping the fiber web machine or slowing down the speed, for example up to a crawl speed can be produced.

The Other characterizing features and advantages of the present invention will be apparent from the description given below and Claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The The present invention will now be described in more detail by way of example Embodiments with reference to the attached schematic drawings described.

1 Fig. 12 schematically shows an example of an on-line multi-roll calender and the advantageous positions of forged steel thermo rolls T having a hard surface, advantageously provided with a composite structure provided with a polymer surface calendering rolls C having a soft surface and of a composite structure provided with fly rollers F, which are arranged in this.

2 Fig. 12 schematically shows active running components and built-in running features adapted to improve the running performance of the on-line multi-roll calender.

3A shows a bearing and a connection that allow rotation of the thermo roll T, and lubrication and cooling arrangements that are carried out in them.

3B shows a thermal insulation structure of a wave at the end of the thermo roll.

4 shows the structure of a polymer roll advantageously provided with a composite structure and a diagram of a temperature compensation system of such a calendering roll.

5 shows a fly roller F, which is provided with a center supported flexible one-piece composite jacket.

6 shows a chamfer of the polymer roller, a particularly wide track and an insulation tube for the thermo roll.

7 shows a structure that is suitable for a real-time offset of the roller.

DESCRIPTION OF BENEFICIARIES EMBODIMENTS

In Online multi-roll calenders become calendering nips between formed adjacently positioned calender rolls, wherein the Stack of rolls, that is, the roll stack, the through the adjacent calender rolls is formed in a vertical Position or in an oblique position with respect to a vertical position can be arranged. The train calendering is going online through twists and turns the above-mentioned gaps so as to enter the roll stack for example, transported from the beginning of the roll stack and leaves the roll stack at its end.

1 schematically shows an online fiber web machine 10 , at the eight nip rolls 11 - 18 and seven columns N1-N7 are present. The online multi-roll calender 10 out 1 is used in the description given below as an example of an on-line fiber web machine in which a paper web or board web W which is calendered passes through calendering nips N1-N7 passing through an upper deflection compensating roll 11 , a lower deflection compensating roll 18 and two or more intermediate rolls 12 - 17 are formed between the upper and lower rollers 11 . 18 are arranged, the rollers 11 - 18 are arranged as a roll stack and wherein the intermediate rolls 12 - 17 with respect to the calender body R by means of hydraulic unloading cylinders 29a and a support and loading arm 29b supported to relieve the nip load caused by the masses of the bearing cups of the intermediate rolls in question and the auxiliary devices relating to them, the roll stack acting as an intermediate roll having a hard surface, one or more forged thermo rolls T, 12 . 15 . 17 made of steel and, as an intermediate roll having a soft coating, one or more polymer-coated calender rolls C, 13 . 14 . 16 This roll is advantageously provided with a composite structure.

In 1 indicates the roll stack of the multi-roll calender 10 the upper roller 11 and the bottom roller 18 and six intermediate rolls 12 - 17 placed between the upper and lower rolls, whereby the upper roll, the lower roll and the intermediate rolls form the nip rolls 11 - 18 form the roll stack. The intermediate roll 12 - 17 are on the body of the multi-roll calender, for example, by means of pivoting about a pivot support and load arms 29b mounted on stock. The body R is shown by a dashed line, the pivots and arms being shown only schematically in connection with an intermediate roll. In the multi-roll calender shown in the drawing 10 it is a vertical stack of rolls, however, the stack of rolls or part of the roll stack may also be a set of rolls other than a vertical stack to practice the present invention.

The thermo rolls with a hard surface used in the online multiroll calender of 1 are all forged thermo rolls T, made of steel, which also makes it possible to carry out the highest temperatures designed in online calendering. The forged thermo rolls have excellent dynamic properties in a calendering situation, since even as a base material steel can be obtained so that its structure is homogeneous. The surface of the thermo rolls T has advantageously been induction hardened or made hard by some other heat treatment or coating, whereby the surface wears evenly without roughening its surface quality. Actual grinding is required if a change in the profile of the thermo roll T is desired. For multiple sanding, it is advantageous to set up a hard surface layer whose thickness is 5-8 mm.

It is beneficial to use the thermo rolls, which are used at high temperatures if they are hot, balance (temperature compensation), to their dynamic operation in the running situation in the best possible Way to monitor.

The soft calender rolls used in the on-line multi-roll calender of 1 are all polymer rolls C, which may be advantageously provided with a composite structure. This allows the use of rollers whose dimensions are smaller, which reduces the mass of the rollers for its part.

The Reducing the mass of rolls leads to a possibility an application of smaller bearings and otherwise improves the Life of the bearings, being the cheaper price of course, the components and the structure also an advantage is.

In the schematic side view of the example of 1 becomes the fiber web W in the roll stack of the on-line multi-roll calender 10 calendered in all the gaps between the calender rolls, the web pull being directed from top to bottom. It is not absolutely necessary to calender the web in all the columns, but in some running situations it may be advantageous to pass the web through an open nip without calendering the web, and in some running situations it may be advantageous to use the web Train the train partially set up outside the roll stack, which, for example, a partial gap run is made possible. Thus, it is possible to set up the web so that it completely bypasses one or more gaps, for example by means of a fly roller (guide roller) (bypass). In 1 is the web W via a fly-roller 21 , F which is advantageously provided with a flexible composite jacket, into the upper gap N1 and further out through the other column N2-N6 and finally out of the lower gap N7 out. Between the nips N1-N7, the web W becomes from the surface of the rolls by means of the fly rolls 22 . 23 . 24 . 25 . 26 and 27 taken away.

In the online multi-roll calender 10 For example, all fly rollers are those fly rollers F which are provided with a one-piece composite sheath supported from the center, one of them in 5 shown in more detail. For reasons of clarity, the supporting devices of the fly rollers F are not shown in connection with the bearing cups of the rollers or in conjunction with the calender body R. After the roll stack, the fibrous web W according to the requirements, for example, with the roller 28 be continued.

1 shows a solution for preventing a so-called bar ring by a roll offset RO, thus, thus one / more rolls in the roll stack from a line passing through the central axis of the rolls of the roll stack, away conveyed / are. Such an offset is usually on the order of tens of millimeters. The lateral displacement, that is, the offset of the polymer surface calender roll C, 13 , which is advantageously the third in the upper position in the roll stack with respect to the press plane of the roll stack, is in more detail in connection with 7 described.

1 shows another solution for preventing a so-called barring by changing the distance WS of the fly roller F with a composite shell from the adjacent thermo roll T. This change of the distance is by second actuators and second mechanisms for increasing or decreasing the distance of the fly roller F with a composite shell of the adjacent thermo roll in real time during the run provided so that the length of the web W in the roll stack changes accordingly. The distance of the fly roller F, 22 with a composite jacket to the adjacent thermo roll T, 12 that in advantageous The second is in the upper position of the roll stack, at a different distance WS to the thermo roll.

The online multi-roll calender 10 has a scraper that is set up for at least one calendering roller.

The online multi-roll calender 10 has an on-line roll cleaning apparatus adapted for at least one calender roll, which enables the cleaning of coating, adhesive or dirt accumulated on the surface of the roll. The roller cleaning device for the surface or the coating of the roller results in cost savings when there is no need for a stop of the calender and also the hot rolls need not be cooled at the time of cleaning. Thus, there is no need for a run interruption due to the stoppage of the calender, which sums up savings especially in the on-line running of the fiber web machine. Further savings result from extending the life of the rolls in the calender because the cleaning of the roll can be done online and thus there is no need to remove the rolls from the calender at the time of cleaning.

The online multi-roll calender 10 exploits the rapid opening of the roll stack to prevent damage to the coatings of the rolls in a situation where web breaks occur. Due to the tearing, bundles of paper that can mark soft roll coatings are accumulated in the nip between the rolls. Due to the tearing, no fibrous web enters the nip between the rolls, which would carry heat, and excessive heating of the roll nip of the roll adjacent to the hot roll is prevented. Typically, in calenders, thermo rolls, the surface of which may even be hot up to, for example, 250 ° C, may be present, as well as polymer coated rolls whose transient temperature resistance may be, for example, about 150 ° C. In a web tear situation, it is important to be able to perform threading as soon as possible and to allow the web to pass again through closed gaps once the roll stack has been cleaned of debris.

The online multi-roll calender 10 has a web break detecting device comprising an optical tearing observation device, means for cutting the web into pieces, and means for preventing the web from being wound in the roll stack. The optical tearing observation device has a pair of photocells in front of the roll stack and a pair of photocells after the roll stack and two pairs of photocells in the roll stack. The device for cutting the web, preferably into several short pieces, has at least one cutting device, such as a cutting knife 230 on, which is advantageously arranged in front of the first nip N1 of the roll stack. The means for preventing the winding of the web has at least one separating fan 231 in the roll stack. The detection of web breakage is an important feature from the point of view of the running behavior of the on-line multi-roll calender, because as the web emerges from the hot gaps, the soft roll coatings can be damaged due to the effect of the heat of the thermo rolls. The cutoff fan 231 is used to prevent the winding of the web around the calender roll, in particular since a web wrapped around a polymer-coated roll can prevent the leakage of additional heat from the coating (cover) and lead to damage to the cover ,

By means of the web tear detection system, it is possible to overcome a situation after tearing in the web, whereby it is of course possible to prevent unnecessary work steps, and the number of damaged components can be reduced. The same goal is with quick-release cylinders 29a aimed at simultaneously opening the column of the roll stack of the online multi-roll calender at the same time 10 in about 0.5 seconds, with the cylinders having hydraulic damping for soft landing (coating) of the intermediate rolls. Fast-opening cylinders of this kind are, for example, from the description of the patent EP 0 842 324 B1 known.

3A shows a warehouse 32 . 33 and a connection 34 which allow rotation of one end of the thermo roll T, and lubricating and cooling means embodied therein. In the jacket section 30 the thermo roll T is a shaft end 31 fastened, for that a bearing 33 is arranged, which is inside the bearing cup 32 located. Lubrication and cooling of the bearing 33 is carried out with a first circulation lubricating oil flow whose inlet channel into the bearing cup 32 With 3.1 _in designated, and an outflow channel is with 3.1 _out designated. The inflow channel 3.1 _in consists of a flow channel, which is formed in the bearing cup, the first lubricating oil flow into the rolling elements of the bearing 33 leads. The first lubricating oil flow leaving the roller elements of the bearing due to the flow by gravity and the centrifugal force passes through channels formed in the bearing cup into the discharge channel 3.1 _out out. Heating the jacket 30 the thermo roll T is carried out with a second circulation oil flow, whose inflow channel with 3.2 _in is designated and whose outflow channel with 3.2 _out in the rotary joint 34 is designated. The rotary joint 34 is at the end of the shaft end 31 fastened, and the flow channels of the second heating oil flow are in the interior of the shaft end, for example in the in 3B shown manner. Cooling and lubricating the rotary joint 34 itself is carried out with a third circulation oil flow whose temperature can be adjusted, and the inflow of this third oil flow is with 3.3 _in designated and the outflow channel is with 3.3 _out designated. The circulation flow media are preferably oils which are suitable for heat transfer in conjunction with the high temperatures of the jacket of the thermoroll, but of course other media besides oil-based heat transfer media may be used.

3B shows a heat insulating structure of the shaft 31 at the end of the shell section 30 the thermo roll T, whose function is to reduce the increase in the temperature of the bearing, which is arranged on the shaft, and thus to reduce the amount of heat that is transferred from the thermo roll in the structure surrounding the calender. The inflowing oil of the second heating oil flow 3.2b _in that are centric inside the shaft 31 flows, and the outflowing oil of the second heating oil flow 3.2b _out are separated from each other by a wall 35 separated, the inner tube in the enlarged detail of 3B is shown. The thermal insulation of the heating oil flow channels 3.2b _in and 3.2b _out in the radial direction to the outside are by a surrounding vacuum insulation 36 outside the fuel oil flow 3.2b _out is arranged, and by an ambient air insulation 37 formed, which is arranged outside the negative pressure. By means of in 3B As shown, it is possible to extend the life of the bearing of the thermo roll and to improve the usability of the calender, for example due to the reduced number of bearing exchanges. 3B further shows an insulation tube 38 whose second heating oil flow is arranged at the end of the roll mantle in the flow channel for the heating oil. The isolation tube 38 is in connection with 6 shown and described in more detail.

4 Figure 11 shows a structure of a polymer roll C advantageously formed in composite structure and a diagram of a system for real time balancing of temperature of all the polymer rolls of the on-line multi-roll calender 10 , A coat section 40 the polymer roller has a steel body 41 , and around the body there is a polymer cover (coating) 42 , The polymer cover 42 advantageously consists of several layers, such as a base layer, an intermediate layer and a cover layer around the steel body around. The total thickness of an advantageous embodiment of the polymer cover 42 whose trade name is CalTiger 92 is about 25 mm, wherein the thickness of the cover layer is about 14 mm. The usable nominal thickness of the cover is 7-10 mm, which can be ground due to maintenance operations or profiling. The hardness of the indicated cover is 92 ShD +/- 1 ShD, the maximum surface temperature is continuously 130 ° C and the surface roughness is less than 0.2 microns during the process. The cover shown can be repaired locally as well as zone-specifically like a belt. The steel body 41 and the tails 43 The roller enclose a volume of water 44 into which the water of the temperature compensation system of the roll C at one end of the roll C through the shaft of the tail 43 flows in, and being out of the volume of water 44 the water from the other end of the roller C flows out through the shaft of the end piece.

In addition to a tube system 45 representing each polymer roll C of the on-line multi-roll calender 10 connects to the system, the temperature compensation system of the polymer roller C of 4 a circulation water pump 46 for circulating the water in the tube system 45 and the volumes of water 44 of the system, a heat exchanger 47 for increasing or decreasing the temperature of the water, that is, for achieving the water circulation in the polymer rolls C up to a suitable application temperature, an expansion tank 48 for accommodating the thermal expansion of the water, a filling valve 49 and a sieve 50 on. The temperature of each polymer roller C is monitored by the temperature monitor and diagnosed in the upper-level control to control in real time the temperature-compensating system of the polymer-surface calendering rollers C, thereby increasing the speed of the circulation pump 46 can be changed and the heat exchanger 47 can be controlled to hotter or colder water in the tube system 45 to generate, or where the flow in the volume of water 44 each polymer roller C can be limited with an adjustable valve or throttle device connected to a tube leading to that particular volume of water.

In the 5 illustrated fly-roller F has a shaft consisting of a cylindrical central part 52 and roll neck 51 at the ends of the middle part 52 consists. The shaft is through their shaft journal to repositories 53 rotatably supported, which are arranged outside the web, which is the risk of exit minimizes the lubricant on the web. At the top of the middle part 52 The shaft is a cylindrical flexible composite shell 54 arranged, which rotates together with the shaft, wherein the jacket from the center to the cylindrical central part 52 the shaft is supported. On the outer surface of the coat 54 there is a cover 55 which has excellent wear resistance, heat resistance, chemical resistance, and coverage 55 can be antistatic. The hardness of a favorable covering of the shell is 0 + 2 P & J, the maximum temperature is 160 ° C and the typical thickness is 2 mm. The trade name of such a cover is Ultima.

The amount and direction of the deflection of the fly roller F can be adjusted according to the requirements set by each fly roller position. The flexible end supports of the shell allow the composite shell to accommodate the small changes in tension profile during the run, allowing for uniform tensioning of the web in varying operating conditions and minimizing the time required to adjust the fly rollers. In certain positions, the fly rollers F can be used as combined spreader and tension measuring rollers. The flexible and continuously bending composite jacket 54 the fly roller F keeps the web tensioned in both the CD and MD MD directions, and the contact of the shell is good even in the peripheral areas of the web which are often difficult to control by conventional three-piece fly rollers. The application of the fly-roller F, with the one-piece composite jacket 54 is advantageous in terms of improving the running performance because of its lightness (light weight), its small residual imbalance due to the accurate manufacturing and because of its properties which dampen the vibrations of the materials and the structure. Benefits include better web tension control, consistent paper quality, low on-the-run adjustment, and effortless maintenance. In addition, the outer diameter of the fly roller F can be dimensioned smaller than in the conventional fly rollers, which is advantageous when the fly rollers F in the same online Mehrwalzenkalander 10 used, the polymer rolls C uses, which are provided with a smaller diameter.

6 shows the advantageous location of a bevel 60 the polymer roller C, a portion of a particularly wide web W which is cut, and an insulation tube 38 the thermo roll T with respect to each other, if desired, in the on-line multi-roll calender 10 to the load of the edge of the polymer covering 42 to reduce the polymer roll C and to reduce the heat transfer of the thermal roll T in the polymer roll C. The web W, which is calendered, is particularly wide so that during the run the web is wider than the end region of the mantle 30 The hot thermoroll T is from which a considerable amount of heat is in the cover 42 the polymer roller C can be passed or discharged. The web W is in the online multi-roll calender 10 intended to be wider than the hot area of the thermo roll T, which significantly affects the coverage of the polymer roll C during the run, by means of the extra wide web W and especially its portion 63 which is cut out and which is not exactly in contact with the hard and also not the soft calendering surface, the edge area of the covering 42 the polymer roll C to protect against the heat that can be passed or discharged from the hot region of the thermoroll T.

The polymer roller C has the body 41 , the cover 42 and the tail 43 on. In the cover is the beveled area 60 that a rough bevel 61 and a micro bevel 62 having. The purpose of the bevels is to increase the load on the edge of the polymer cover 42 to reduce. The thermo roll T has the shell part 30 which serves the purpose of insulating tubes in the heating medium flow channels 64 in this at the end of the thermo roll is to reduce the thermal expansion of the thermo roll T in the radial direction. The transfer of heat from the thermo roll to the polymer roll may be through the insulation tubes 38 and the extra wide web W can be reduced. By means of the extra wide web W, it is possible the purity of the edge of the soft roll cover 42 to guarantee. The section 63 The web that is cut out is advantageously at least 15 mm wide - measured from the inner edge of the insulating tube 38 the thermo roll T to the outside, that is in 6 from the right edge of the insulation tube 38 outward. The micro bevel 62 starts advantageously at one point 65 about 10 mm from the inner edge of the insulation tube 38 the thermo roll T inside, and settle in the direction of the edge of the cover 42 advantageously about 20 mm, whereby the center of the micro bevel 62 at the inner edge of the insulation tube 38 the thermo roll T is.

In addition, the temperature of the edge of the soft covering 42 the polymer roll C can be measured by advantageously using non-contact measuring such as infrared temperature measuring. Then can the temperature monitoring of the two edges of the roll cover comprises a high temperature warning and an automatic opening of the gap. For monitoring, two fixed measuring heads are arranged at each position of the polymer roll C at both roll ends.

Optionally, the temperature of the edge of the soft cover can 42 be further cooled in each polymer roll position by cooling shoes on the edge regions of the soft cover 42 the polymer rolls C are arranged at both roll ends, wherein in the shoes compressed air in the edge region of the roll cover 42 which is cooled, blown. The cooling effect can be adjusted in the axial direction by adjusting the number of segments arranged in the cooling shoe in the axial direction of the roller. The infrared temperature measuring heads are advantageously integrated in connection with the cooling shoes.

7 shows an advantageous structure, which is suitable for the real-time roll offset, by means of which the bearing cup of the roller to be offset, are supported in the calender body. The structure shown is for example in the document FI 2005 5407 described. The online multi-roll calender 10 has the calendering roll C provided with polymer surface, 13 , first actuators 100 that provide the offset RO, and first mechanisms 101 for conveying the polymerized calendering roll C, 13 during the run in the lateral direction RO with respect to the press plane of the roll stack.

The construction of 7 uses a motor and a lifting device as the actuator 100 , by means of which a transmission mechanism 101 is moved to execute the offset RO. The transmission mechanism 101 has a lever mechanism 102 on, which has an upper lever and a lower lever, which are coupled together with a connecting lever. Both the upper lever and the lower lever are on eccentric connections 103 attached, which is rotatable and backlash on the upper and lower portion of a mounting frame 104 of the bearing cup are attached. If the actuators 100 the displacement devices at both ends of the roller to be displaced, the levers of the lever mechanisms 102 move, turn the eccentric connections 103 working in support and loading arms 29b are arranged, whereby the offset of the mounting racks 104 of the bearing cup in the direction of offset RO is effected. The transmission mechanism 101 becomes in the body R of the online multi-roll calender 10 in terms of a hole 29c of the support and loading arm 29b turned, and the relief cylinder 29a is in relation to a hole 29d at the end of the lever of the lever-like supporting and loading arm 29b turned.

• – der Echtzeitzustand des Online-Mehrwalzenkalanders während des Laufs durch Messeinrichtungen und Diagnoseeinrichtungen überwacht,
• – misst die Messeinrichtung zumindest die Schwingung des Kalanderkörpers R oder zumindest die Schwingung einer Walze,
• – werden Messdaten durch eine erste Diagnoseeinrichtung (beispielsweise Sensodec S6) analysiert,
• – werden vorbehandelte Daten (beispielsweise TCT/IP) zu einem Oberlevelautomatiksystem (beispielsweise DNA = Dynamic Network of Applications) übermittelt, das als eine zweite Diagnoseeinrichtung in Echtzeit eine Laufverhaltensdiagnoseanalyse in bezug auf eine Vorbehandlungsschwingungsmessung ausführt; und
• – nachdem die Schwingung auf eine zuvor festgelegte Reaktionsgrenze (Barring) erhöht worden ist, wird/werden einer der folgenden zwei Schritte oder beide folgende Schritte ausgeführt:
• – Steuern der ersten Aktuatoren, die den Versatz RO der mit Polymeroberfläche versehenen Kalandrierwalze C, 13 vorsehen, während des Online-Kalandrierens derart, dass die mit Polymeroberfläche versehene Kalandrierwalze C, 13, die in vorteilhafter Weise die dritte in der oberen Position des Walzenstapels (1) ist, seitlich in Bezug auf die Pressebene des Walzenstapels versetzt wird,
• – nachdem die Schwingung bis zu einer zuvor festgelegten Reaktionsgrenze (Barring) erhöht worden ist, Steuern der zweiten Aktuatoren, die eine Änderung des Abstandes WS der Fly-Walze F mit einem Verbundmantel von der benachbarten Thermowalze T vorsehen, während des Online-Kalandrierens so, dass der Abstand der Fly-Walze F mit einem Verbundmantel von der benachbarten Thermowalze zunimmt oder abnimmt, wodurch sich die Länge der Bahn W in dem Walzenstapel dementsprechend ändert.

In the method, to improve the running performance of the on-line multi-roll calender 10 :

• The real-time state of the on-line multi-roll calender is monitored during running by measuring devices and diagnostic devices,
• The measuring device measures at least the vibration of the calender body R or at least the vibration of a roller,
• - measured data are analyzed by a first diagnostic device (eg Sensodec S6),
• Pretreated data (for example TCT / IP) is transmitted to an upper level automatic system (for example DNA = Dynamic Network of Applications) which, as a second diagnostic device, carries out a runtime diagnostic analysis in relation to a pretreatment vibration measurement in real time; and
• - after the vibration has been increased to a previously defined reaction limit (barring), one of the following two steps or both of the following steps will be carried out:
• Controlling the first actuators, the offset RO of the polymer-provided calender roll C, 13 during on-line calendering such that the polymerized calendering roll C, 13 that advantageously the third in the upper position of the roll stack ( 1 ) is displaced laterally with respect to the press plane of the roll stack,
• After the vibration has been increased to a predetermined reaction limit (barring), controlling the second actuators, which provide for a change in the distance WS of the fly roller F with a composite jacket from the adjacent thermo roll T, during on-line calendering thus, that the distance of the fly roller F increases or decreases with a composite shell of the adjacent thermal roll, whereby the length of the web W in the roll stack changes accordingly.

Advantageously, the distance of the fly roller F with a composite shell adjacent to the thermoroll T, 12 , which is advantageously the second in the upper position of the roll stack, changed to a distance WS with respect to the thermo roll (see 1 ).

The Real-time setting of the length of the web, that is the web setting WS by changing the distance of the Fly-roller F from the thermo-roll T and in the lateral direction rolling roll offset RO of the polymer roll C causes a decrease the vibration during the run up to a level in the running behavior of the web is better.

According to an embodiment of this method, the profile of the web W in the machine direction MD and in the cross-machine direction CD is monitored and diagnosed in real time for setting the profiles in the roll stack of the calender. This is in the roll stack of the online multi-roll calender 10 suitable measuring devices (Bahnbeberührung) arranged.

Such a measuring device is a roller 70 For example, it is suitable for a voltage measurement performed by a deformation-based or pressure-sensing method or an electromagnetic-film (EMFi) method. An EMFi roller is known by the trade name iRoll from Metso Paper Inc. Corporation. Below the roller cover, which advantageously has a plurality of layers, the body of the tension measuring roller 70 protect and act as a spring, a film-like sensor is arranged which measures the force caused by the web or nip in the form of an oblique spiral. Part of the sensor is under the effect of each measured force, whereby the sensor measures a cross profile (pressure profile) as the coil twists. The cover above the pressure sensor or the EMFi sensor generates a deformation due to the force caused on its surface, which deformation presses the sensor, which responds to deformation by generating an electrical signal. The sensor rotates creating a voltage profile from which the CD-directional stress can be calculated in real time based on the angular position of the roller. From the rotating tension measuring roller, a measured signal is transmitted using wireless data transmission, and the electrical energy for the measuring electronics in the tension measuring roller is wirelessly transmitted, for example, by induction. By means of a tension measuring position, it is possible to provide a feedforward profile measurement for the on-line multi-roll calender for the profile settings of the calender.

Thus, for example, before the first nip of the on-line multi-roll calender a tension measuring roll 70 (please refer 1 ) whose measuring profile can be formed as a profile diagram in the direction MD and in the CD direction. As the web W travels on the calender, a feed forward is made in each instantaneous situation with respect to the profile settings of thickness, etc., at the calender, whereby at each instant the real time CD profile and the expected situation of the web, which runs to the calender, are known. The measurement data is used so that the profile settings of the calender are revised as a prediction or online because the profile of the web W is previously known.

According to one Embodiment of the method is the temperature each thermo roll T and each polymer roll C is monitored and diagnosed in real time in the roll stack of the calender.

According to one Embodiment of the method are all Quality defects (for example, coating strips, Felt marks and water points) of the web W in real time by means of a train inspection system (WIS), which in an advantageous manner is arranged in the roll stack of the calender, checked at each speed. The analysis of the railway inspection system WIS is on an optical capture (video photography), Voreinteilung and Incorporation was established, creating a documentation about the time, the kind, the size and the location of mistakes (For example, a hole), which may be a machine control signal or cause a warning in real time at an online event Roll up is usable.

above are only some advantageous embodiments of the present invention, and it is for Experts obvious that several modifications compared within the scope of the appended claims can be.

SUMMARY

An online multiroll calender ( 10 ) comprises: steel thermoforming rolls (T) forged as intermediate rolls with a hard surface; as intermediate rolls with a soft surface polymer rolls (C) for which there is a system for balancing their temperature; for guiding the web (W) into and out of each nip (N1 ... N7) and at least one fly roller (F) provided with a flexible one-piece composite shell (N) 54 ) is provided; a web tear detection device; a track which is extra wide so that, during the run, the track is wider than an end portion of the jacket of the hot thermo roll (T) from which a considerable amount of heat is transferred to a cover ( 42 ) of the adjacent polymer roll (C) can be passed or discharged; first actuators ( 100 ) and first mechanisms ( 101 ) for displacing the polymer roll (C, 13 during running in the lateral direction (RO) with respect to the press plane of the roll stack; and second actuators and second mechanisms for increasing or decreasing the distance of a fly roller (F) with a composite shell from the adjacent thermo roll during the run so that the length of the web (W) in the roll stack changes accordingly. In addition, a method for calendering a fibrous web in an on-line multi-roll calender is described.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 0842324 B1 [0052]
• - FI 20055407 [0063]

Claims (18)

Online multi-roll calender ( 10 in which a paper web or paperboard web (W) which is calendered is set up to be conveyed through calendering nips (N1-N7) passing through an upper deflection compensating roll (N1-N7). 11 ), a lower deflection compensating roller ( 18 ) and two or more intermediate rolls ( 12 - 17 ) formed between the upper and lower rollers ( 11 . 18 ) are arranged, wherein the rollers ( 11 - 18 ) are arranged as a roll stack and wherein the intermediate rolls ( 12 - 17 ) with respect to the calender body (R) are arranged by means of hydraulic unloading cylinder (R) ( 29a ) and levers ( 29b ) is carried to relieve the nip load caused by the masses of the bearing cups of the intermediate rolls in question and related auxiliary devices, wherein: - all the intermediate rolls are provided with thermo rolls (T, 1) forged with a hard surface of the roll stack; 12 . 15 . 17 ), which are made of steel, - all intermediate rolls with a soft surface of the roll stack have polymer-coated calendering rolls (C, 13 . 14 . 16 ), for which a system for balancing their temperature is set up, - the online multiroll calender ( 10 ) Fly rollers (F, 21 - 27 ) for guiding the web (W) into and out of the nip (N1 ... N7), at least one of which is provided with a flexible one-piece composite shell ( 54 ), - the online multiroll calender ( 10 ) Has web tear detection means comprising an optical web tear monitoring means, means for cutting the web (W) into pieces and means for preventing the web from being wound in the roll stack, the web (W) being calendered being made particularly wide is that during the run the web is wider than the end region of the jacket of the hot thermo roll (T) from which a considerable amount of heat is added to the cover ( 42 ) the adjacent polymer roller (C) can be passed or discharged, - the online Mehrwalzenkalander ( 10 ) first actuators ( 100 ) containing an offset (RO) of the polymerized calendering roll (C, 13 ), and first mechanisms ( 101 ) for conveying the polymerized calendering roll (C, 13 ) during the run in the lateral direction with respect to the press plane of the roll stack, and - the online multi-roll calender ( 10 ) second actuators, which provide a change in the distance (WS) of the fly roller (F) with a composite shell of the adjacent thermal roll (T), and second mechanisms for increasing or decreasing the distance of the fly roller (F) with a Composite jacket from the adjacent thermo roll during the run such that the length of the web (W) in the roll stack changes accordingly. Online Mehrwalzenkalander according to claim 1, characterized in that the system for the real-time temperature compensation of the polymer-provided calender rolls (C, 13 . 14 . 16 ) has at least the following parts: a volume of water ( 44 ) of each polymer roll, a circulation water pump ( 46 ), a heat exchanger ( 47 ), an expansion tank ( 48 ), a filling valve ( 49 ), a sieve ( 50 ) and a tube system ( 45 ) connecting the aforementioned parts of the system. Online Mehrwalzenkalander according to claim 1, characterized in that the relief cylinder ( 29a ) of intermediate rolls ( 12 - 17 ) are fast-opening cylinders. Online multi-roll calender according to claim 1, characterized in that the optical path monitoring device a pair of photocells in front of the roll stack and a pair of photocells after the roll stack and two pairs of photocells in the roll stack having. An on-line multi-roll calender according to claim 1, characterized in that the means for cutting the web into pieces comprises at least one cutting device, such as a severing knife ( 230 ), which is advantageously arranged in front of the first nip (N1) of the roll stack. An online multi-roll calender according to claim 1, characterized in that the means for preventing the winding of the web at least one separation fan ( 231 ) in the roll stack. Online Mehrwalzenkalander according to claim 1, characterized in that before the first gap (N1) a tension measuring roll ( 70 ), on the mantle of which a pressure sensor or an EMFi sensor measuring the force caused by the web is arranged in the form of an oblique spiral such that when the spiral twists, the sensor measures a transverse profile which can be obtained as a profile chart in the MD direction and CD direction. Online multi-roll calender according to claim 1, characterized in that it comprises an optical device, those for optically capturing for real-time mapping the quality defect of the web (W) is suitable, such as Coating strips, felt marks and water dots. Online Mehrwalzenkalander according to claim 1, characterized in that it comprises a scraper which is arranged for at least one calendering roller. Online Mehrwalzenkalander according to claim 1, characterized in that it is an online roll cleaning device which arranged for at least one calendering roller is. Method for on-line calendering of a fiber web (W) on an online multiroll calender ( 10 ) according to claim 1, wherein by means of this method it is possible to optionally calender several types of fiber webs, characterized in that - the real-time state of the on-line multi-roll calender ( 10 ) is monitored during the run by measuring devices and diagnostic devices, - the measuring devices measure at least the vibration of the calender body (R) or at least the vibration of a roller, - the measured data are analyzed by a first diagnostic device, - pretreated data to a top-level automation system transmitting, as a second diagnostic device, real-time running diagnostic analysis at least with respect to a pretreatment vibration measurement, and after the vibration has increased to a predetermined reaction limit, one of the following two steps or the two following steps are performed: Controlling the first actuators ( 100 ) which determines the offset (RO) of the polymer-surface calendering roll (C, 13 ), during on-line calendering such that the polymerized calendering roll (C, 13 ) in the lateral direction with respect to the press plane of the roll stack, - controlling the second actuators, which provide a change in the distance (WS) of the fly roller (F) with a composite shell of the adjacent thermal roll (T), during online -Calandering such that the distance of the fly roller (F) increases or decreases with a composite shell of the adjacent thermal roll, whereby the length of the web (W) in the roll stack changes accordingly. Process according to claim 11, characterized characterized in that the profile in the machine direction (ND) and monitored in the cross machine direction (CD) of the web (W) is diagnosed and diagnosed in real time for a setting the profiles in the roll stack or outside the roll stack of the calender. A method according to claim 11 or 12, characterized in that before the first gap (N1) a tension measuring roll ( 70 ), in which a pressure sensor or an EMFi sensor measuring the force caused by the web is arranged in the form of an oblique spiral so that when the spiral twists along the roller, the sensor enters Measures transverse profile from which a profile diagram in the MD direction and in the CD direction can be formed. Method according to claim 11, thereby marked that - the temperature of each thermo roll (T) is monitored and diagnosed for realizing the temperature of the thermo rolls in real time (T), - the temperature of each thermo roll (C) is monitored and being diagnosed for a real-time Balancing the temperature of the polymer surface provided Calender rolls (C). Process according to claim 11, characterized characterized in that the quality defects of the web (W) in Real-time in the roll stack of the calender through an analysis checked the basis of optical detection and error distribution be, making the documentation of the errors in a online rolling up is applicable. Process according to Claim 11, characterized in that the calendering roll provided with polymer surface (C, 13 ) offset from above in the third position of the roll stack is offset laterally with respect to the press plane of the roll stack. A method according to claim 11, characterized in that the distance of the fly roller (F) with a composite shell adjacent to the thermo roll (T, 12 ), which is in the second position of the roll stack from above, is changed to a distance (WS) with respect to the thermo roll. A method according to any one of claims 11-17, characterized in that on the on-line multi-roll calender several fiber web types are calendered having at least two of the following characteristics: - single-ply paper whose basis weight is 25-300 g / m ² , - printing paper, the mechanical pulp such as newsprint, uncoated magazine paper, and coated magazine paper, printing paper made from chemical pulp, such as uncoated and coated pulp-based printing paper, release paper, sack kraft paper, tissue paper and wallpaper, paperboard produced by the multi-layer technique and whose basis weight is 150-600 g / m ² , such as corrugated board and fluting board, box board, graphic board and wallpapers base paper.