EP2152965B1 - Procédé de commande et/ou de réglage de l'entraînement d'un système de cylindres - Google Patents

Procédé de commande et/ou de réglage de l'entraînement d'un système de cylindres Download PDF

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Publication number
EP2152965B1
EP2152965B1 EP08735943A EP08735943A EP2152965B1 EP 2152965 B1 EP2152965 B1 EP 2152965B1 EP 08735943 A EP08735943 A EP 08735943A EP 08735943 A EP08735943 A EP 08735943A EP 2152965 B1 EP2152965 B1 EP 2152965B1
Authority
EP
European Patent Office
Prior art keywords
roll
diameter
operating conditions
rolls
current operating
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.)
Not-in-force
Application number
EP08735943A
Other languages
German (de)
English (en)
Other versions
EP2152965A1 (fr
Inventor
Markus Schoisswohl
Jose-Lima Santos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
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Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2152965A1 publication Critical patent/EP2152965A1/fr
Application granted granted Critical
Publication of EP2152965B1 publication Critical patent/EP2152965B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0045—Paper-making control systems controlling the calendering or finishing
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/0006—Driving arrangements
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/002—Opening or closing mechanisms; Regulating the pressure
    • D21G1/004—Regulating the pressure

Definitions

  • the invention relates to a method for controlling and / or regulating the drives of a roller arrangement with at least two nip forming rollers for producing and / or finishing a material web, in particular paper or board web, in which the peripheral speeds of the two rollers are determined, such as eg virus of not before published writing WO 2008/0285 16 A1 known.
  • the drives of paper machine coating units have been using a fixed diameter for calculating the peripheral speed before and during the closing of the units.
  • This diameter is measured directly physically.
  • the diameter may change due to external influences such as wear or thermal expansion.
  • it may happen that a roller refinished, the diameter of which is not corrected in the system.
  • rollers may rattle as long as they are dry. If the roller speed does not correspond to the paper speed, there will be a torque and paper pull.
  • the invention has for its object to provide an improved method and an improved device of the type mentioned, with which the aforementioned problems are eliminated.
  • this object is achieved in that the peripheral speeds of the two rolls are determined depending on the defined physically measured Wazzen diameter and that used to determine the peripheral velocities of the rollers defined diameter are at least partially adapted online to the respective current operating conditions.
  • the ratio of the defined diameters of the two rolls and then the defined diameters of the rolls are adapted to the respective current operating conditions.
  • the measurement of the roller speeds carried out with the roller arrangement closed can also take place during production in the case of the material web guided through the nip.
  • a first roller can be defined as master and the second roller as slave.
  • the drives or the roller assembly are closed at controlled and / or controlled speed of the roller drives to adapt the diameter ratio to the current operating conditions, the slave drive switched to loadsharing or torque control, the rotational speeds of the rollers measured and off the measured values obtained are determined by the current diameter ratio.
  • the defined diameter of the master roll is adapted during production to the current operating conditions.
  • the defined diameter of the master roll over a measured diameter and a correction factor are advantageously determined and adapted the correction factor during production to the respective current operating conditions.
  • the path and / or drive fluctuations occurring during closing of the roller arrangement are preferably measured, and the correction factor is adapted to the respective current operating conditions on the basis of the result of this measurement.
  • both the maximum deviation and the integral deviation during closing of the roller arrangement are advantageously taken into account.
  • the adjusted diameter of the slaved roll is then determined via the adapted diameter of the master roll and the adapted diameter ratio.
  • the roller arrangement may in particular comprise a top roller and a bottom roller.
  • the upper roll can be defined as a master roll and the lower roll as a slaved roll.
  • a reverse definition is also possible.
  • the adjusted defined roll diameters are preferably fed to a speed control for the rolls comprising at least one feedback loop.
  • the roller arrangement can be assigned for example to a coating unit, a winding device or a calender.
  • the adaptation of the relative diameters of, for example, an upper and a lower roller takes place by measuring the speeds in the closed state of the respective unit or nip. Depending on the application, this measurement can take place either in a defined sequence without material web, for example paper or board web, or during production. It is important that only the diameter ratio is adjusted.
  • the diameter of the master roll can be adapted or adapted to match the speed of the material web or paper web and the roll surface speeds to each other.
  • the correction advantageously depends both on the maximum deviation and on the integral deviation during the closing process.
  • the factors used for the correction can either be adapted manually or defined again by a learning algorithm.
  • the risk of paper breaks during the closing of, for example, coating units or the like can be minimized, which entails a corresponding increase in production and a corresponding minimization of paper broke generation.
  • a permanent calculation of the current effective diameter is possible, which may be required for maintenance.
  • the roller arrangement can be associated, for example, with a coating device.
  • a coating device can be arranged, for example, between different drying groups.
  • a device for a corresponding tension measurement can be provided in the web running direction in front of the coating unit.
  • the invention can also be applied, for example, to spool rolls of a winding device, which are axially driven by a motor or gear. These can have different diameters due to wear or inaccurate manufacture, which leads to problems at this position when transferring to a new drum (Reel Tum-Up). For these, the same algorithm can be used per drum roll, although an identification of the roles by the system is needed. This can either be done automatically or via a manual input of the reels. Moreover, the invention is in u.a. Also applicable calendering.
  • FIG. 1 shows a schematic representation of a between two dryer groups 10, 12 of a paper machine 14 arranged coating unit 16 with associated device for controlling and / or regulating the associated roller assembly 20th
  • the roller arrangement 20 assigned in the present case, for example, to a coating unit 16 comprises at least two rollers forming a nip 22 between them, here for example a top roller 24 and a bottom roller 26.
  • the material web to be produced or treated is, in the present case, a fibrous web, in particular a paper or board web.
  • the peripheral speeds of the two rollers 24, 26 are determined as a function of defined roll diameters.
  • control and / or regulating device 18 comprises means for at least partially adapting the defined, ie effective diameter used for determining the circumferential speeds of the rollers 24, 26 to the current operating conditions.
  • the control and / or regulating device 18 Preferably, by means of the control and / or regulating device 18, first the ratio of the defined diameters of the two rollers 24, 26 and then the defined diameters of the rollers are adapted to the respective current operating conditions.
  • a measuring device 28 is provided in order to measure the speeds, preferably rotational speeds of the rollers 24, 26 when the roller arrangement 20 or the closed nip 22 is closed.
  • the control and / or regulating device 18 comprising a corresponding evaluation device, the diameter ratio is then adapted to the respective current operating conditions via such a measurement of the roller speeds.
  • the measurement of the roll speeds for example, with a closed roll arrangement without paper web or, in particular, also with a closed roll arrangement, can take place during production in the case of the paper web guided through the nip.
  • the upper roll 24 can be defined as master and the lower roll 26 as slave. In principle, however, a reverse definition is also conceivable.
  • the control and / or regulating device 18 may in particular comprise means for closing the drives or the roller arrangement at controlled and / or controlled speed of the roller drives for adjusting the diameter ratio to the respective current operating conditions, to switch the slave drive to loadsharing or torque control, to cause the measurement of the rotational speeds of the rollers by the measuring device 28 and to determine the current diameter ratio from the measured values obtained.
  • the defined diameter of the master roll in this case, for example, the top roll 24, is adapted to the respective current operating conditions during production.
  • the defined diameter of the master roller 24 can be determined via a measured diameter and a correction factor.
  • this correction factor can be preferably adjusted during production to the current operating conditions.
  • a device 30 for measuring the occurring during closing of the roller assembly 20 web and / or drive fluctuations may be provided.
  • the correction factor can then be adapted to the respective current operating conditions on the basis of the result of this measurement.
  • the adaptation of the correction factor preferably takes place both as a function of the maximum deviation and as a function of the integral deviation during the closing of the roller arrangement 20 or of the coating unit 16.
  • the adjusted diameter of the master roll 24 and the adjusted diameter ratio can then be determined by means of the control and / or regulating device 18, the adjusted diameter of the slaving roll.
  • the defined roll diameters are preferably permanently adapted to the respective current operating conditions by means of the control and / or regulating device 18.
  • the adapted defined roll diameters may in particular be fed to a speed control for the rolls 24, 26 comprising at least one feedback loop.
  • FIG. 2 shows a diagram from which a typical closing operation of the coating unit 16 (see. FIG. 1 ) results in strong paper distortion.
  • FIG. 3 shows a schematic representation of a winding device 40 of a paper machine 14 with associated device for controlling and / or regulating the associated roller assembly 42.
  • the roll arrangement 42 assigned in the present case, for example, to the winding device 40 comprises two rolls forming a nip 44 between them, here, for example, a carrying drum 46 and a winding roll 48.
  • the material web to be produced or treated is, in the present case, a fibrous web, in particular a paper or board web.
  • the peripheral speeds of the two rollers 46, 48 are determined as a function of defined roll diameters.
  • control and / or regulating device 50 comprises means for at least partially adapting the defined, that is effective diameter used for determining the circumferential speeds of the rollers 46, 48, to the current operating conditions.
  • control and / or regulating device 50 Preferably, by means of the control and / or regulating device 50, first the ratio of the defined diameters of the two rollers 46, 48 and then the defined diameter of the rollers adapted to the current operating conditions.
  • a measuring device 52 is provided in order to measure the speeds, preferably rotational speeds of the rollers 24, 26 when the roller arrangement 20 or closed nip 22 is closed.
  • the control and / or regulating device 50 comprising a corresponding evaluation device, the diameter ratio is then adapted to the respective current operating conditions via such a measurement of the roller speeds.
  • the measuring device 52 By means of the measuring device 52, the measurement of the roll speeds, for example, with a closed roll assembly without paper web or, in particular, also with a closed roll arrangement during production in the guided through the nip paper web.
  • the carrier drum 46 can be defined as a master and the winding roller 48 as a slave. In principle, however, a reverse definition is also conceivable.
  • the control and / or regulating device 50 may in particular comprise means for closing the drives or the roller arrangement at controlled and / or controlled speed of the roller drives to adjust the diameter ratio to the respective current operating conditions, to switch the slave drive to loadsharing or torque control, to cause the measurement of the rotational speeds of the rollers by the measuring device 52 and to determine the current diameter ratio from the measured values obtained.
  • the defined diameter of the master roll in this case, for example, the carrier drum 46, is adapted to the respective current operating conditions during production.
  • the defined diameter of the master roller 46 can be determined via a measured diameter and a correction factor.
  • this correction factor can be preferably adjusted during production to the current operating conditions.
  • a device 54 for measuring the occurring during closing of the roller assembly 42 web and / or drive fluctuations may be provided.
  • the correction factor can then be adapted to the respective current operating conditions on the basis of the result of this measurement.
  • the adjustment of the correction factor preferably takes place both as a function of the maximum deviation and as a function of the integral deviation during the closing of the roller arrangement 42 or the winding device 40.
  • the adapted diameter of the slave roller can then be determined by means of the control and / or regulating device 50.
  • the defined roll diameters are preferably permanently adapted to the respective current operating conditions by means of the control and / or regulating device 50.
  • the adapted defined roll diameters may in particular be fed to a speed control for the rolls 46, 48 comprising at least one feedback loop.
  • FIG. 4 shows a diagram of an exemplary Tambour pizza in the FIG. 3 shown winding device 40 results in an embodiment of the method according to the invention.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Paper (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (15)

  1. Procédé de commande et/ou de réglage des entraînements d'un système de cylindres (20 ; 42) équipé d'au moins deux cylindres (24, 26 ; 46, 48) formant entre eux un pincement (22 ; 44) servant à fabriquer et/ou enrichir une bande de matière, notamment une bande de papier ou de carton, dans lequel les vitesses périphériques des deux cylindres (24, 26 ; 46, 48) sont calculées en fonction des diamètres de cylindre définis, mesurés physiquement, les diamètres définis utilisés pour calculer les vitesses périphériques des cylindres (24, 26 ; 46, 48) étant adaptés au moins en partie en ligne aux conditions de fonctionnement actuelles respectives.
  2. Procédé selon la revendication 1, caractérisé en ce que le rapport des diamètres définis des deux cylindres (24, 26 ; 46, 48) d'abord puis les diamètres définis des cylindres (24, 26 ; 46, 48) ensuite sont adaptés aux conditions de fonctionnement actuelles respectives.
  3. Procédé selon la revendication 2, caractérisé en ce que les vitesses, de préférence les vitesses de rotation des cylindres (24, 26 ; 46, 48), sont mesurées lorsque le système de cylindres (20 ; 42) est fermé et/ou qu'un pincement (22 ; 44) est fermé, et que l'adaptation du rapport des diamètres aux conditions de fonctionnement actuelles respectives se produit par le biais d'une telle mesure des vitesses de cylindres.
  4. Procédé selon la revendication 3, caractérisé en ce que la mesure des vitesses de cylindres effectuée lorsque le système de cylindres (20 ; 42) est fermé est réalisée sans bande de matière.
  5. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la mesure des vitesses de cylindres effectuée lorsque le système de cylindres (20 ; 42) est fermé se produit pendant la production, lorsque la bande de matière est guidée par le pincement (22 ; 44).
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un premier cylindre (24 ; 46) est défini comme maître et que le deuxième cylindre (26 ; 48) est défini comme esclave lorsque l'on considère les deux cylindres (24, 26 ; 46, 48) formant entre eux un pincement (22 ; 44).
  7. Procédé selon la revendication 6, caractérisé en ce que les entraînements et/ou le système de cylindres (20 ; 42) sont fermés lorsque la vitesse des entraînements de cylindre est commandée et/ou réglée en vue de réaliser l'adaptation du rapport des diamètres aux conditions de fonctionnement actuelles respectives, l'entraînement du cylindre esclave étant commuté en mode partage de charge ou réglage de couple, les vitesses de rotation des cylindres (24, 26 ; 46, 48) étant mesurées et le rapport actuel des diamètres étant déterminé à partir des valeurs de mesure obtenues.
  8. Procédé selon l'une quelconque des revendications 6 ou 7, caractérisé en ce que le diamètre défini du cylindre maître (24 ; 46) est adapté aux conditions de fonctionnement actuelles respectives pendant la production.
  9. Procédé selon la revendication 8, caractérisé en ce que le diamètre défini du cylindre maître (24 ; 46) est déterminé par le biais d'un diamètre mesuré et d'un facteur de correction et que le facteur de correction est adapté aux conditions de fonctionnement actuelles respectives pendant la production.
  10. Procédé selon la revendication 9, caractérisé en ce que les variations de bande ou d'entraînement survenant à la fermeture du système de cylindres (20 ; 42) sont mesurées et que le facteur de correction est adapté aux conditions de fonctionnement actuelles respectives à l'aide du résultat de cette mesure.
  11. Procédé selon la revendication 10, caractérisé en ce que tant l'écart maximal que l'écart intégral sont pris en compte lors de la fermeture du système de cylindres (20 ; 42) pour réaliser l'adaptation du facteur de correction.
  12. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le diamètre adapté du cylindre esclave (26 ; 48) est déterminé par le biais du diamètre adapté du cylindre maître (24 ; 46) et du rapport adapté des diamètres.
  13. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le système de cylindres (20 ; 42) comprend un cylindre supérieur (24) et/ou un tambour porteur (46) et un cylindre inférieur (26) et/ou un rouleau d'enroulement (48).
  14. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les diamètres de cylindre définis sont adaptés en permanence aux conditions de fonctionnement actuelles respectives.
  15. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les diamètres de cylindre définis adaptés sont transmis à au moins un système de réglage de vitesse des cylindres (24, 26 ; 46, 48) comprenant une boucle de rétroaction.
EP08735943A 2007-05-09 2008-04-08 Procédé de commande et/ou de réglage de l'entraînement d'un système de cylindres Not-in-force EP2152965B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710022239 DE102007022239A1 (de) 2007-05-09 2007-05-09 Verfahren und Vorrichtung zur Steuerung und/oder Regelung der Antriebe einer Walzenanordnung
PCT/EP2008/054215 WO2008138691A1 (fr) 2007-05-09 2008-04-08 Procédé et dispositif de commande et/ou de réglage de l'entraînement d'un système de cylindres

Publications (2)

Publication Number Publication Date
EP2152965A1 EP2152965A1 (fr) 2010-02-17
EP2152965B1 true EP2152965B1 (fr) 2012-09-26

Family

ID=39642884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08735943A Not-in-force EP2152965B1 (fr) 2007-05-09 2008-04-08 Procédé de commande et/ou de réglage de l'entraînement d'un système de cylindres

Country Status (4)

Country Link
EP (1) EP2152965B1 (fr)
CN (1) CN101688369B (fr)
DE (1) DE102007022239A1 (fr)
WO (1) WO2008138691A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010041615A1 (de) * 2010-09-29 2012-03-29 Voith Patent Gmbh Verfahren zum Betreiben eines Kalanders

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4343173A1 (de) * 1993-12-17 1995-06-22 Kleinewefers Gmbh Kalander und nachgeschaltete Wickelvorrichtung
DE102005013628A1 (de) * 2005-03-24 2006-09-28 Voith Paper Patent Gmbh Antriebssteuerung
US7524400B2 (en) * 2006-06-13 2009-04-28 The Procter & Gamble Company Process for controlling torque in a calendering system
WO2008028516A1 (fr) * 2006-09-05 2008-03-13 Metso Paper, Inc. Procédé et dispositif pour mesure de condition de ligne de contact

Also Published As

Publication number Publication date
CN101688369A (zh) 2010-03-31
WO2008138691A1 (fr) 2008-11-20
DE102007022239A1 (de) 2008-11-27
CN101688369B (zh) 2012-09-05
EP2152965A1 (fr) 2010-02-17

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