EP1557490A1 - Verfahren zum Betreiben eines Mehrwalzenkalanders und Kalander - Google Patents
Verfahren zum Betreiben eines Mehrwalzenkalanders und Kalander Download PDFInfo
- Publication number
- EP1557490A1 EP1557490A1 EP05100085A EP05100085A EP1557490A1 EP 1557490 A1 EP1557490 A1 EP 1557490A1 EP 05100085 A EP05100085 A EP 05100085A EP 05100085 A EP05100085 A EP 05100085A EP 1557490 A1 EP1557490 A1 EP 1557490A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- roll
- soft
- hard
- calender
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0253—Heating or cooling the rolls; Regulating the temperature
- D21G1/0266—Heating or cooling the rolls; Regulating the temperature using a heat-transfer fluid
-
- 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 method for operating a Mehrwalzenkalanders, in which one train in dependence of a desired surface quality either by several nips of the calender or only passes through at least one end nip. Further concerns the invention provides a calender with a roll stack multiple rolls and formed between adjacent rolls Nips in which one of an end roll and a Intermediate roll limited Endnip by a hard roller and a soft roll is formed, and with means for Retention of the end nip limiting intermediate roll.
- Such a method and calender are known for example from DE 202 00 584 U1.
- One Such calender is mainly used to a paper web to satin. In this calendering is the Paper web compressed on the one hand, but receives on the other hand also certain surface properties. Especially you want by treating the paper web in such a calender, the smoothness of the paper web can influence.
- the invention is based on the object, the treatment options to expand in a Mehrwalzenkalander.
- This object is achieved in a method of the aforementioned Sorted by solving that by exclusive Use of at least one endnip the endnip either by a hard roller and a soft roller limited or the hard roller against a soft roller exchanges and limits the end nip with two soft rollers, taking the replaced roller to a tempering device connects and the temperature control operates with a temperature control, the type the replaced roller depends.
- one with the exchange of Roller switches the operation of the tempering.
- the tempering device automatically switch over during installation.
- Switching means are also identifiers to understand arranged on the roller and that of a detection device can be detected automatically, with the detection device then the operation of the tempering controls.
- the operating parameters of the scraper device for example, blade angle and Kingenbelastung, will then be on the surface of the to be cleaned Roller adapted.
- the tempering device is operated with oil.
- Oil is capable of both larger amounts of heat to transport it into the roller when it is around a hard, heated roller acts as well as heat remove the roller, if it is a soft Roller acts.
- a soft replacement roller which is a connection arrangement for a tempering device, that of the connection arrangement the end nip limiting hard roll geometrically corresponds, and the temperature control for the heating of a hard roller and the heat dissipation is designed from a soft roll.
- the replacement roller and the interchangeable hard roller switching means on which the tempering device on the operation of each Change roller suitable operation That's it possible to change the operating mode automatically. It So there is no risk that the tempering accidentally heated the soft roller or the hard roller cools. This will increase the risk of interference kept small, resulting from an inaccurate Tempering of the respective rollers result.
- the intermediate nip defining the end nip is designed as a hard roller. So you use as end roll a soft roll, which also serves as a deflection roll is trained. The replacement roller can then be carried out more cheaply.
- a scraper assembly is in position arranged the exchange roller, their operating parameters depending on the type of in the position the exchange roller arranged roller are adjustable.
- their operating parameters depending on the type of in the position the exchange roller arranged roller are adjustable.
- the operating parameters such as blade load and blade angle, depending on the installed roller type are adjustable, is a changeover between different modes of operation in a simple way possible.
- a trajectory through both Endnips provided and both the endnips limiting hard Intermediate rolls are interchangeable with a soft roll.
- Both interchangeable Intermediate rolls can be connected to the tempering device connect to when using a hard roller to supply heat and in use dissipate heat from a soft roller.
- the trajectory runs through all nips of the calender, with all nips open to the endnips are.
- Fig. 1 shows a calender 1 with ten rollers 2-11. From the rollers 2-11 are arranged at the end of the roll stack Rolls 2, 11 as deflection adjustment rollers formed, with only schematically illustrated Support elements 12, 13 are provided.
- the rollers 2, 4, 6, 7, 9, 11 are formed as soft rolls, i. they have an elastic, not shown Surface on its surface.
- the rollers 3, 5, 8, 10 are designed as hard, heated rollers. This is indicated by a hatching.
- the hard, heated ones Rollers stand with one shown in Fig. 5 Tempering device (not shown in FIGS. 1 to 4) in connection. The tempering leads the hard, heated rollers 3, 5, 8, 10 heat to, so that their surface temperature is raised. you strives for surface temperatures in the range of 60 to 120 ° C on.
- nips 14-22 are formed, through which a paper web 23 is guided.
- the nips 14-17 and 19-22 are designed as "soft" nips, between a hard, heated roller 3, 5, 8, 10 and a soft roll 2, 4, 6, 7, 9, 11 with an elastic Surface cover are formed.
- the paper web 23 is smoothed.
- One Alternating tip 18, which is formed by two soft rollers 6, 7 is provided to both sides of the paper web to rest on hard rollers 3, 5 and 8, 10.
- the calender 1 is therefore a "classic” supercalender formed in the mode of operation of FIG. 1 "normal” is operated. In this normal mode of operation the paper web 23 is passed through all the nips 14-22 and smoothed everywhere (except for the alternate 18).
- the last intermediate roller 10 be set or detained.
- This is a adjustable stop 26 is provided, for example as a hydraulically operated piston-cylinder arrangement is formed and on one end 27 of a two-armed Levers 28 acts at the other end 29 of the last intermediate roll 10 is arranged.
- the last intermediate roller 10 are held so that a pressurization the web 23 in the nip 22 by the lower end roll 11 possible is without the other rollers 2-9 for support the last intermediate roll 10 are used have to. Accordingly, the remaining nips 14-21 remain open, as shown in Fig. 2.
- the soft roll 30 also passes through the scraper assembly 24 cleaned, it being provided that the Operating parameters of the scraper assembly 24 changed and adapts to the surface of the soft roll 30. Especially one will the contact pressure of the doctor blade 25th reduce and possibly also the angle of attack to change.
- the soft roller 30 is through the stop 26th held, so that on the roller 11, a pressurization the paper web 23 in the last nip 22 possible is, without the other rollers must rotate.
- FIG. 4 now shows a fourth mode of operation in which the Paper web 23 through the calender in exactly the same Way is performed, as shown in Fig. 1 is. However, here are only the first nip 14 and the last nip 22 closed. The remaining nips 15-21 are opened. The rolls involved in these nips 4-9 can rotate, but are not burdened by pressure.
- the soft Roller 30 installed at the position of the last intermediate roll 10 (FIG. 1) is also in the mode of operation of FIG. 4, the soft Roller 30 installed. Also at the position of the upper heated hard intermediate roll 3 is a soft roll 31 used. The soft roller 31 forms together with the upper soft end roll 2 also a soft-soft nip.
- the upper soft intermediate roller 31 is provided with a Scraper assembly 32 provided, the surface of the soft intermediate roll 31 cleans during operation.
- thermoelectric device 32 connected, which is a heating device 33 and a cooling device 34.
- a pump 35 is provided to a heat transfer fluid, in the present Case of oil, from one connected to port 43 Return line 36 of the heater 33rd and the cooling device 34 supply.
- the heater 33 and the cooling device 34 are like this is known, designed as a heat exchanger.
- a valve 37 is provided to a flow port 38 of the roller 10, which is connected to the terminal 44, either with the heater 33 or with the cooling device 34 to connect.
- the connection takes place in Dependence on the type of roller attached to the position the lower intermediate roll 10 is installed. If it thereby, as shown in Fig. 5, a hard Roller 10 is, the roller 10 is with the heater 33 connected, so that the roller 10 a predetermined Amount of heat is supplied, leading to a temperature increase the surface leads.
- the roller 10 is provided with a sensor 39, the of a sensor of a control device 40 are scanned can.
- the controller 40 controls the valve 37 on the one hand and the scraper arrangement 24 on the other hand, i.e. the control device 40 sets the contact pressure and the angle of attack of the doctor blade 25 in dependence on the type of roller.
- Fig. 5 also shows that the soft roll 30 with the elastic covering 41 held on the surface is to be replaced with the roller 10.
- the soft roller 30 has the same connection geometry the terminals 43, 44 and the pin 45, as the hard 10, but another donor 42, also from the Sensor of the control device 40 can be detected.
- the controller 40 detects that a soft Roller is used, then the valve 37 is switched, around the roller 30 with the cooling device 34 too connect.
- the cooling device is heat transfer fluid pumped through the roller 30 to heat, in the Operation arises to transport. The heat arises for example, by the flexing of the elastic Lining 41.
- FIG. 5 The representation of FIG. 5 is highly schematic. Naturally it is also possible with the cooling device 34th to cool the hard roller 10, for example should be required before a removal.
Landscapes
- Paper (AREA)
Abstract
Description
- Fig. 1
- einen Kalander in einer ersten Betriebsweise,
- Fig. 2
- den Kalander in einer zweiten Betriebsweise,
- Fig. 3
- den Kalander in einer dritten Betriebsweise,
- Fig. 4
- den Kalander in einer vierten Betriebsweise und
- Fig. 5
- eine Darstellung austauschbarer Walzen.
Claims (10)
- Verfahren zum Betreiben eines Mehrwalzenkalanders, bei dem man eine Bahn in Abhängigkeit von einer gewünschten Oberflächenqualität entweder durch mehrere Nips des Kalanders oder nur durch mindestens einen Endnip leitet, dadurch gekennzeichnet, daß man bei ausschließlicher Verwendung von mindestens einem Endnip den Endnip entweder durch eine harte Walze und eine weiche Walze begrenzt oder die harte Walze gegen eine weiche Walze austauscht und den Endnip durch zwei weiche Walzen begrenzt, wobei man die ausgetauschte Walze an eine Temperiereinrichtung anschließt und die Temperiereinrichtung mit einer Temperierleistung betreibt, die vom Typ der ausgetauschten Walze abhängt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man mit dem Austausch der Walze die Betriebsweise der Temperiereinrichtung umschaltet.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß man an der ausgetauschten Walze eine Schabereinrichtung in Abhängigkeit vom Typ der ausgetauschten Walze einstellt.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß man die Temperiereinrichtung mit Öl betreibt.
- Kalander mit einem Walzenstapel aus mehreren Walzen und zwischen benachbarten Walzen gebildete Nips, bei dem ein von einer Endwalze und einer Zwischenwalze begrenzter Endnip durch eine harte Walze und eine weiche Walze gebildet ist, und mit Mitteln zum Festhalten der den Endnip begrenzenden Zwischenwalze, dadurch gekennzeichnet, daß eine weiche Austauschwalze (30) vorgesehen ist, die eine Anschlußanordnung (43, 44) für eine Temperiereinrichtung (32) aufweist, die der Anschlußanordnung der den Endnip begrenzenden harten Walze (10) geometrisch entspricht und die Temperiereinrichtung (32) für die Beheizung einer harten Walze (10) und die Wärmeabfuhr aus einer weichen Walze (30) ausgelegt ist.
- Kalander nach Anspruch 5, dadurch gekennzeichnet, daß die Austauschwalze (30) und die austauschbare harte Walze (10) Umschaltmittel (39, 42) aufweisen, die die Temperiereinrichtung (32) auf die zum Betrieb der jeweiligen Walze (10, 30) geeignete Betriebsweise umstellen.
- Kalander nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die den Endnip (22) begrenzende Zwischenwalze (10) als harte Walze ausgebildet ist.
- Kalander nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß eine Schaberanordnung (25) an der Position der Austauschwalze (10, 30) angeordnet ist, deren Betriebsparameter in Abhängigkeit von der Art der in der Position der Austauschwalze (10, 30) angeordneten Walze einstellbar sind.
- Kalander nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, daß ein Bahnverlauf durch beide Endnips (14, 22) vorgesehen ist und beide die Endnips (14, 22) begrenzenden harten Zwischenwalzen (3, 10) gegen eine weiche Walze (30, 31) austauschbar sind.
- Kalander nach Anspruch 9, dadurch gekennzeichnet, daß der Bahnverlauf durch alle Nips (14-22) des Kalanders verläuft, wobei alle Nips (15-21) bis auf die Endnips (14, 22) geöffnet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004003715 | 2004-01-24 | ||
DE102004003715A DE102004003715B3 (de) | 2004-01-24 | 2004-01-24 | Verfahren zum Betreiben eines Mehrwalzenkalanders und Kalander |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1557490A1 true EP1557490A1 (de) | 2005-07-27 |
EP1557490B1 EP1557490B1 (de) | 2010-05-19 |
Family
ID=34625796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05100085A Expired - Fee Related EP1557490B1 (de) | 2004-01-24 | 2005-01-10 | Verfahren zum Betreiben eines Mehrwalzenkalanders und Kalander |
Country Status (3)
Country | Link |
---|---|
US (1) | US7340999B2 (de) |
EP (1) | EP1557490B1 (de) |
DE (2) | DE102004003715B3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1621668A1 (de) * | 2004-07-31 | 2006-02-01 | Voith Paper Patent GmbH | Kalander |
EP2325387A3 (de) * | 2009-11-20 | 2011-06-01 | Voith Patent GmbH | Mehrwalzenkalander und Umbauverfahren eines Mehrwalzenkalanders |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2634307B1 (de) * | 2012-03-02 | 2016-05-11 | Valmet Technologies, Inc. | Verfahren zur Modernisierung eines Superkalenders und eines modernisierten Superkalenders |
DE102019124253A1 (de) * | 2019-09-10 | 2021-03-11 | Andritz Küsters Gmbh | Walze, Kalander und Verfahren zum Konfigurieren einer Steuerungs- und/oder Regelungseinheit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4960046A (en) * | 1988-06-22 | 1990-10-02 | Eduard Kusters Maschinenfabrik Gmbh & Co Kg | Calender arrangement |
EP0822289A2 (de) * | 1996-08-01 | 1998-02-04 | Voith Sulzer Finishing GmbH | Kalander |
EP0890676A1 (de) * | 1997-07-10 | 1999-01-13 | Voith Sulzer Finishing GmbH | Kalander |
DE20200584U1 (de) * | 2002-01-16 | 2002-03-28 | Voith Paper Patent GmbH, 89522 Heidenheim | Kalander |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI62874C (fi) * | 1979-10-15 | 1983-03-10 | Valmet Oy | Pappers kalander |
FI65106C (fi) * | 1980-06-10 | 1984-03-12 | Valmet Oy | On-machine superkalander foer en pappersmaskin |
DE3107709A1 (de) * | 1981-01-24 | 1982-08-05 | Escher Wyss AG, Zürich | Kalander mit mindestens einer beheizten walze |
-
2004
- 2004-01-24 DE DE102004003715A patent/DE102004003715B3/de not_active Expired - Fee Related
-
2005
- 2005-01-10 DE DE502005009578T patent/DE502005009578D1/de active Active
- 2005-01-10 EP EP05100085A patent/EP1557490B1/de not_active Expired - Fee Related
- 2005-01-21 US US11/038,082 patent/US7340999B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4960046A (en) * | 1988-06-22 | 1990-10-02 | Eduard Kusters Maschinenfabrik Gmbh & Co Kg | Calender arrangement |
EP0822289A2 (de) * | 1996-08-01 | 1998-02-04 | Voith Sulzer Finishing GmbH | Kalander |
EP0890676A1 (de) * | 1997-07-10 | 1999-01-13 | Voith Sulzer Finishing GmbH | Kalander |
DE20200584U1 (de) * | 2002-01-16 | 2002-03-28 | Voith Paper Patent GmbH, 89522 Heidenheim | Kalander |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1621668A1 (de) * | 2004-07-31 | 2006-02-01 | Voith Paper Patent GmbH | Kalander |
EP2325387A3 (de) * | 2009-11-20 | 2011-06-01 | Voith Patent GmbH | Mehrwalzenkalander und Umbauverfahren eines Mehrwalzenkalanders |
EP2385172A1 (de) | 2009-11-20 | 2011-11-09 | Voith Patent GmbH | Umbauverfahren eines Mehrwalzenkalanders |
Also Published As
Publication number | Publication date |
---|---|
US7340999B2 (en) | 2008-03-11 |
DE102004003715B3 (de) | 2005-08-18 |
EP1557490B1 (de) | 2010-05-19 |
US20050178278A1 (en) | 2005-08-18 |
DE502005009578D1 (de) | 2010-07-01 |
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