EP1764327B1 - Dispositif d'enroulement - Google Patents

Dispositif d'enroulement Download PDF

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Publication number
EP1764327B1
EP1764327B1 EP05108639A EP05108639A EP1764327B1 EP 1764327 B1 EP1764327 B1 EP 1764327B1 EP 05108639 A EP05108639 A EP 05108639A EP 05108639 A EP05108639 A EP 05108639A EP 1764327 B1 EP1764327 B1 EP 1764327B1
Authority
EP
European Patent Office
Prior art keywords
roll
winding device
roll winding
bearing
natural frequency
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.)
Active
Application number
EP05108639A
Other languages
German (de)
English (en)
Other versions
EP1764327A1 (fr
Inventor
Uwe Dr. Gnauert
Hubertus Siebald
Roger Wimmel
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
ERAS Entwicklung and Realisation adaptiver Systeme GmbH
Original Assignee
Voith Patent GmbH
ERAS Entwicklung and Realisation adaptiver Systeme 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, ERAS Entwicklung and Realisation adaptiver Systeme GmbH filed Critical Voith Patent GmbH
Priority to EP05108639A priority Critical patent/EP1764327B1/fr
Priority to DE502005006079T priority patent/DE502005006079D1/de
Priority to AT05108639T priority patent/ATE415369T1/de
Publication of EP1764327A1 publication Critical patent/EP1764327A1/fr
Application granted granted Critical
Publication of EP1764327B1 publication Critical patent/EP1764327B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/40—Shafts, cylinders, drums, spindles
    • B65H2404/43—Rider roll construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/10—Ensuring correct operation
    • B65H2601/12—Compensating; Taking-up
    • B65H2601/125—Vibration

Definitions

  • the invention relates to a reel winding device with at least one roller to which a winding roll is applied during winding.
  • a paper web is produced in a relatively large width of currently up to 12 m and virtually endless. In order to be usable for a later consumer, the paper web must be divided into narrower webs. These narrower webs must then be wound into rolls. For this purpose, a roll winding device is used.
  • reel winders which are also referred to as "slitter” occur in operation problems due to strong vibrations, the result of poor windings, heavy use of Machine and the foundations, reduction in production speed or roller swings to roll ejection are.
  • reel winders sought for imbalances in rollers or reels, after vibrations in the drive and control system, etc. Changes, which are usually associated with much effort, have not been able to completely resolve the difficulties.
  • Occurring vibrations with concomitant out of roundness of the winding roll may be associated with the processing of certain types of paper.
  • the friction behavior or the paper thickness represent relevant quantities.
  • contact vibration between the winding roll and the roll or rollers is the cause of the out-of-roundness of the winding roll, the roll or rolls and the winding roll or parts thereof, e.g. the outer shell of a limited number of paper layers, swing against each other.
  • This can lead to a non-uniform structure of the winding roll (density, stiffness, thickness variation, air pockets, shifting paper layers), which in turn can increase the contact vibrations.
  • the bobbins are decelerated to a standstill. If the rotational frequency of the winding roll passes through the natural frequency of the oscillation of the entire system, then a roll swings can occur. The winding roll vibrates, which can lead to a role ejection.
  • Vibrations occurring during the winding process are classified into two problem areas, namely roll hum and roll swings.
  • the roller humming is a contact vibration between the winding roller and the roller or the rollers, wherein when using several rollers, on which the winding roller is applied, the rollers can oscillate against each other. Roller rumbling may occur when a harmonic of the rotational frequency of the winding roll or winding rolls (when several winding rolls are wound simultaneously) is in the range of the natural frequency of the contact vibration.
  • the invention has for its object to avoid critical conditions when winding.
  • the contact vibration occurs at a harmonic of the rotational frequency of the winding roll in conjunction with a system natural frequency.
  • a change device is provided, with which the system own frequency can be selectively changed.
  • the system frequency is suitably changed in operation in such a way that the amplitude of the contact vibration occurring in the approach is reduced in the associated harmonic, so that as a result of no further uneven Wi-ckelimposed can train more. If, due to the changed system natural frequency, a contact oscillation occurs at another harmonic, the system natural frequency can be shifted again.
  • the system natural frequency can be switched between at least two values. This is a particularly simple solution. Two discrete values of the system eigenfrequency can be realized with little effort. If a vibration results in a system natural frequency, you can switch the reel winder to another system's own frequency and there continue to wind until, for example, there is a critical state. In this case, it is switched back again.
  • the system natural frequency is continuously variable. In this case one can avoid a critical condition continuously.
  • the natural frequency of the system can be changed by changing the roller or roller bearing.
  • the roller or roller bearings are elements of the reel winder which do not change during operation without external intervention. They are therefore available in defined states, so that this state can be changed from the outside.
  • the winding roll is mounted and the system natural frequency is variable via a change in the bobbin storage.
  • the winding roll is part of the oscillating system. While in a Doppeltragwalzenwickler, so a roll winding device in which the winding roller rests on two support rollers, a bobbin storage is usually not present, it is in a back-up roller or contact roller given. About the bobbin storage can now influence the winding roll and thus take on a component of the oscillating system.
  • the stiffness of the roller bearing is changeable. This is a relatively simple measure to change the system natural frequency of the reel winder with winding roll.
  • roller is either rigid or soft storable.
  • system natural frequency can be changed.
  • roller is mounted with a bearing which can be coupled either to a foundation or a stoma or stored on a suspension spring.
  • suspension spring is to be understood here functionally.
  • the spring can therefore also be formed by a gas spring or a hydraulic spring.
  • the soft bearing is combined with a damper.
  • a damper such as a friction damper, effectively removes energy from any possible vibration.
  • the damper has a variable damping. You can then adjust the system's own frequency also via the change in damping.
  • the damper is designed as a locking device. This can be realized for example by the fact that the damper gets such a high coefficient of friction that it no longer allows movement.
  • the damper is designed as a hydraulic damper.
  • a hydraulic damper the oscillation energy is converted into heat by flowing a hydraulic fluid back and forth. Now, if you stop this liquid flowing back and forth, the damper locks the bearing. You can now change the damping properties. This can be done, for example, by changing the flow resistance of the throttle. Another possibility is to change the viscosity of the hydraulic fluid, for example in an electrorheological oil.
  • the soft storage has a position tracking. This can hold the position of the roller despite increasing mass of the winding roll, so that a simple transition to the rigid state of the bearing is possible.
  • the position tracking can also be used to maintain the correct bias of the suspension spring according to the mass of the winding roll, so that no lowering or lifting of the roller takes place during the transition from stiff to soft.
  • the system natural frequency changing means comprises a vibration sensor.
  • the vibration sensor determines whether a vibration occurs and, if so, how big it is. If a vibration occurs or the vibration exceeds a predetermined amplitude, then the system natural frequency varying means may be actuated to change the system natural frequency.
  • the system natural frequency changing means comprises a control device in which a relationship between roll diameters and switching states is stored.
  • states ie which roll diameter and at which speed, set critical states. Now you can make the switching of the system's own frequency on reaching a corresponding time in the winding process.
  • the roller bearing has a bearing which is supported by a hydraulic cylinder, wherein the hydraulic cylinder is in communication with a pressure supply device whose pressure is variable. About the variable pressure can then change the way in which the bearing is supported by the hydraulic cylinder. At high pressure, the rigidity of the bearing is correspondingly high. At a low pressure it is correspondingly lower. This is especially true when in addition a gas volume is connected to the hydraulic fluid.
  • the pressure supply device has a pressure regulating valve.
  • a pressure control valve With a pressure control valve, the desired pressure can be easily adjusted.
  • a check valve is arranged between the pressure supply device and the hydraulic cylinder. If the hydraulic cylinder has been moved to a certain position and the check valve is closed, then the hydraulic fluid from the hydraulic cylinder can no longer escape. The bearing is then rigidly mounted, so to speak. If, however, the check valve is opened, then the hydraulic fluid in the hydraulic cylinder can be influenced by the pressure supply device, so that the bearing stiffness is lowered accordingly.
  • the hydraulic cylinder is connected via the check valve with a hydraulic accumulator.
  • the hydraulic accumulator then forms a spring, for example by means of an enclosed gas volume. So if the check valve has opened, then forms the hydraulic cylinder with the hydraulic accumulator, the above-mentioned suspension spring. When the shut-off valve is closed, the hydraulic accumulator is blocked.
  • the hydraulic cylinder is a rigid connection between the bearing and the foundation or the strangulation.
  • a throttle is arranged between the hydraulic cylinder and the hydraulic accumulator.
  • the throttle removes energy from the reciprocating hydraulic fluid and thus contributes to the damping. If you make the throttle resistance changeable, possibly also from the outside, then it is easy to change the damping.
  • a pressure control device is provided which equalizes the pressures on both sides of the check valve to each other. When switching from hard to soft then it is ensured that the storage position does not change. Overall, this can be a small working range of storage of, for example ⁇ 2 mm guaranteed.
  • the bearing has at least one movement stop. In operation, only relatively small vibrations are allowed. Larger deflections of the bearing can be avoided by the movement stop. A change of the drive shaft can thus be avoided under certain circumstances. Also on a hinged connection of the drive shaft, which allow larger movements, can be dispensed with.
  • the bearing is guided in a direction of movement. This guidance takes place in the direction of low rigidity or free movement.
  • the bearing is connected by leaf springs to a chair.
  • leaf springs have a relatively low stiffness perpendicular to their planar extent. In its planar extent, however, results in a high rigidity. Leaf springs are virtually wear-free, especially when the load is swinging.
  • the bearing is rotatably supported by a lever.
  • a small rotation about the pivot point of the lever is allowed.
  • a lever additionally allows moving apart of the rollers in a Doppeltragwalzenwickler, which is favorable, for example, with increasing winding diameter.
  • the bearing can be guided linearly. Again, it is possible to change the distance between two support rollers.
  • the rigidity of the roller can also be changed.
  • the stiffness can be changed, for example, by increasing its internal pressure or by activating or deactivating internal stiffeners.
  • a roll winding device 1 according to Fig. 1 is designed as Doppeltragwalzenwickler.
  • the roll winding device 1 has two support rollers 2, 3, which form a winding bed 4, in which a winding roller 5 is located.
  • the winding roll has a winding tube 6, on which a paper web 7 is wound.
  • the paper web 7 is unwound from a spool 8, which is rotatably mounted in a development not shown.
  • Only schematically illustrated is a guide roller 9. Depending on the desired web guide, of course, several guide rollers 9 may be present.
  • such a reel winding device is also provided with a longitudinal cutting device 10, which divides the paper web 7 into a plurality of mutually parallel partial webs.
  • the partial webs may have a width in the range of about 0.3 to 4.8 m.
  • a support roller 11 which is also referred to as a rider or load roller, presses the winding roller 5 with a predetermined force in the W i ckelbett 4.
  • the support roller 11 is used at the beginning of a winding operation to the paper web 7 as hard as possible to the winding tube 6 wrap. For this purpose, a higher force is applied. In a later section of the winding process it serves to hold the winding roll 5 in the winding bed 4, so to prevent jumping out.
  • the two support rollers 2, 3, of which at least one is driven, are mounted in bearings 12, 13.
  • the bearings 12, 13 are shown here only schematically. At least one of the two bearings 12, 13 has a variable rigidity, which is based on Fig. 2 will be explained in more detail.
  • Fig. 2 shows the bearing 12, which is not supported directly on a foundation 14, such as a hall floor, or in a chair, but via a hydraulic cylinder 15.
  • the hydraulic cylinder 15 has a piston 16 which defines a pressure chamber 17.
  • a biasing spring 18 pushes the piston 16 in a direction in which the pressure chamber 17 is minimized.
  • a movement stop 19 is arranged, which limits the movement of the piston 16 and thus the movement of the bearing 12, which is connected to the piston 16 via a rod 20.
  • a movement stop may be provided at a distance of a few millimeters, a movement stop.
  • the bearing 12 is associated with a position sensor 21, which may also be referred to as a "displacement sensor".
  • the position sensor 21 continuously detects the position of the bearing 12 and therefore is able to detect vibrations that the bearing 12 performs. If the bearing 12 vibrates, then also wears the support roller 2 carried by him.
  • the pressure chamber 17 is connected to a supply line 22.
  • a first pressure sensor 23 is arranged in a section of the supply line 22, the pressure chamber 17 with a pressure supply device 24 connects, a check valve 25 is arranged in the in Fig. 2 shown blocking position, which is effected by a spring 26, a connection between the pressure chamber 17 and the pressure supply device 24 interrupts.
  • the check valve opens, for example by means of an electromagnetic drive 27, then a connection between the pressure supply device 24 and the pressure chamber 17 is given.
  • the pressure supply device 24 has a pressure source 28, for example a pressure connection or a pump, and a pressure regulating valve 29. At the output of the pressure regulating valve 29, a second pressure sensor 30 is arranged.
  • the supply line 22 is connected on the side facing away from the pressure chamber 17 of the check valve 25 via a throttle 31 with a hydraulic accumulator 32.
  • the hydraulic accumulator acts as a hydraulic spring. It usually has a gas volume or other compressible volume.
  • the check valve 25 When the check valve 25 is open, the pressure is controlled with increasing mass of the winding roller 5 so that the position of the bearing 12 remains stationary. In this case, the position sensor 21 located on the bearing 12 is used as the error sensor.
  • the bearing 12 is guided. Possible embodiments of the bearing guides are in Fig. 3 shown.
  • Fig. 3a shows a first embodiment in which the bearing 12 is secured by leaf springs 33 to the frame 34.
  • the bearing 12 is displaced in the direction of a double arrow 35.
  • the rigidity of the leaf springs 33 is low. Accordingly, a movement is possible. Perpendicular to this results in a high stiffness.
  • the storage with leaf springs 33 is wear-free in particular with a vibrating load.
  • Fig. 3b the bearing 12 is mounted on a lever 36 which is rotatable about a pivot point 37 in the frame 34. A rotational movement about the pivot point 37 of the lever 36 is permitted. Since these are relatively small movements, see the above-mentioned ⁇ 2 mm, the movement of the bearing 12 is almost linear with respect to the stiffening.
  • Fig. 3c shows a third embodiment, in which the bearing 12 is supported by rollers 38 on the frame 34. Accordingly, the bearing 12 is also movable in the direction of a double arrow 39 relative to the frame 34. It is therefore a linear guide.
  • the switching between soft and hard storage, so switching the check valve 25, can be done either via a controller or via a control.
  • a controller can be used when it is known from a winding process, when for which switching state uncritical diameter of the winding roll 5 are present, so that can be switched according to controlled.

Landscapes

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

Claims (25)

  1. Dispositif d'enroulement comprenant au moins un cylindre pouvant être supporté de manière rigide ou souple, sur lequel s'applique une bobine lors de l'enroulement, un dispositif de variation de la fréquence propre du système (100) étant prévu pour modifier une fréquence propre d'un système formé d'un dispositif d'enroulement (1) et d'une bobine (5), le support souple étant combiné avec un amortisseur (15, 31),
    caractérisé en ce que
    l'amortisseur (15, 31) est réalisé sous forme de dispositif de verrouillage.
  2. Dispositif d'enroulement selon la revendication 1, caractérisé en ce que la fréquence propre du système peut être commutée entre au moins deux valeurs.
  3. Dispositif d'enroulement selon la revendication 1, caractérisé en ce que la fréquence propre du système peut être modifiée de manière continue.
  4. Dispositif d'enroulement selon l'une quelconque des revendications précédentes, caractérisé en ce que la fréquence propre du système peut être modifiée par le biais d'une modification du cylindre (2, 3) ou du support de cylindre (12, 13).
  5. Dispositif d'enroulement selon l'une quelconque des revendications précédentes, caractérisé en ce que la bobine (5) est supportée et la fréquence propre du système peut être modifiée par une modification du support de bobine.
  6. Dispositif d'enroulement selon l'une quelconque des revendications 4 ou 5, caractérisé en ce que la rigidité du support de cylindre (12, 13) peut être modifiée.
  7. Dispositif d'enroulement selon la revendication 6, caractérisé en ce que le cylindre est supporté avec un palier qui peut être accouplé de manière sélective à une base (14) ou un bâti ou qui peut être supporté sur un ressort de support.
  8. Dispositif d'enroulement selon l'une quelconque des revendications précédentes, caractérisé en ce que l'amortisseur (15, 31) présente un amortissement variable.
  9. Dispositif d'enroulement selon l'une quelconque des revendications précédentes, caractérisé en ce que l'amortisseur (15, 31) est réalisé sous forme d'amortisseur hydraulique.
  10. Dispositif d'enroulement selon l'une quelconque des revendications précédentes, caractérisé en ce que le support souple présente un guidage d'axe de palier.
  11. Dispositif d'enroulement selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de variation de fréquence propre du système (100) présente un capteur d'oscillations (21).
  12. Dispositif d'enroulement selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de variation de la fréquence propre du système (100) présente une unité de commande dans laquelle une corrélation entre les diamètres des rouleaux et les états de commutation est enregistrée.
  13. Dispositif d'enroulement selon l'une quelconque des revendications précédentes, caractérisé en ce que le palier du support de cylindre est supporté par un vérin hydraulique (15), le vérin hydraulique (15) étant en liaison avec un dispositif d'alimentation en pression (24) dont la pression peut être modifiée.
  14. Dispositif d'enroulement selon la revendication 13, caractérisé en ce que le dispositif d'alimentation en pression (24) présente une soupape de régulation de la pression (29).
  15. Dispositif d'enroulement selon la revendication 13 ou 14, caractérisé en ce que l'on dispose une soupape d'arrêt (25) entre le dispositif d'alimentation en pression (24) et le vérin hydraulique (15).
  16. Dispositif d'enroulement selon la revendication 15, caractérisé en ce que le vérin hydraulique (15) est connecté par le biais de la soupape d'arrêt (25) à un accumulateur hydraulique (32).
  17. Dispositif d'enroulement selon la revendication 16, caractérisé en ce que l'on dispose entre le vérin hydraulique (15) et l'accumulateur hydraulique (32) un étranglement (31).
  18. Dispositif d'enroulement selon l'une quelconque des revendications 15 à 17, caractérisé en ce que l'on prévoit un dispositif de commande de pression (23, 30) qui ajuste l'une à l'autre les pressions des deux côtés de la soupape d'arrêt (25).
  19. Dispositif d'enroulement selon l'une quelconque des revendications 4 à 18, caractérisé en ce que le palier (12, 13) présente au moins une butée de mouvement (19).
  20. Dispositif d'enroulement selon l'une quelconque des revendications 4 à 19, caractérisé en ce que le palier (12, 13) est guidé dans une direction de mouvement.
  21. Dispositif d'enroulement selon l'une quelconque des revendications 4 à 20, caractérisé en ce que le palier (12, 13) est relié à un bâti (34) par le biais de ressorts à lame (33).
  22. Dispositif d'enroulement selon l'une quelconque des revendications 4 à 20, caractérisé en ce que le palier (12, 13) est supporté à rotation par le biais d'un levier (36).
  23. Dispositif d'enroulement selon l'une quelconque des revendications 4 à 20, caractérisé en ce que le palier (12, 13) est guidé linéairement.
  24. Dispositif d'enroulement selon l'une quelconque des revendications précédentes, caractérisé en ce que la rigidité du cylindre (2, 3) est variable.
  25. Dispositif d'enroulement selon l'une quelconque des revendications précédentes, caractérisé en ce que la masse du cylindre (2, 3) est variable.
EP05108639A 2005-09-20 2005-09-20 Dispositif d'enroulement Active EP1764327B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP05108639A EP1764327B1 (fr) 2005-09-20 2005-09-20 Dispositif d'enroulement
DE502005006079T DE502005006079D1 (de) 2005-09-20 2005-09-20 Rollenwickeleinrichtung
AT05108639T ATE415369T1 (de) 2005-09-20 2005-09-20 Rollenwickeleinrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05108639A EP1764327B1 (fr) 2005-09-20 2005-09-20 Dispositif d'enroulement

Publications (2)

Publication Number Publication Date
EP1764327A1 EP1764327A1 (fr) 2007-03-21
EP1764327B1 true EP1764327B1 (fr) 2008-11-26

Family

ID=35276682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05108639A Active EP1764327B1 (fr) 2005-09-20 2005-09-20 Dispositif d'enroulement

Country Status (3)

Country Link
EP (1) EP1764327B1 (fr)
AT (1) ATE415369T1 (fr)
DE (1) DE502005006079D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI118961B (fi) * 2006-04-06 2008-05-30 Metso Paper Inc Menetelmä värähtelyn vaimennuksessa rullaimilla
DE102009055353A1 (de) * 2009-12-29 2011-06-30 Voith Patent GmbH, 89522 Rollenwickelvorrichtung und Verfahren zum Aufwickeln einer Materialbahn
DE102009055352A1 (de) * 2009-12-29 2011-06-30 Voith Patent GmbH, 89522 Rollenwickelvorrichtung und Verfahren zum Aufwickeln einer Materialbahn

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7121923U (de) * 1971-06-05 1972-11-30 J Voith Gmbh Trageinrichtung fuer aus bahnen aufgewickelte rollen
DE2128097C3 (de) * 1971-06-05 1974-05-30 Voith Gmbh J M Trageinrichtung für aus Bahnen aufgewickelte Rollen
DE7305837U (de) * 1973-02-16 1974-10-10 Voith J Gmbh Trageinrichtung fuer aus bahnen aufgewickelte rollen
DE2318351C2 (de) * 1973-04-12 1975-03-20 J.M. Voith Gmbh, 7920 Heidenheim Trageinrichtung für eine Wickelrolle
US5961899A (en) * 1997-07-15 1999-10-05 Lord Corporation Vibration control apparatus and method for calender rolls and the like
DE10125192A1 (de) * 2001-05-23 2002-11-28 Voith Paper Patent Gmbh Verfahren und Vorrichtung zur aktiven Schwingungsdämpfung bei Wickelmaschinen

Also Published As

Publication number Publication date
ATE415369T1 (de) 2008-12-15
EP1764327A1 (fr) 2007-03-21
DE502005006079D1 (de) 2009-01-08

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