EP2325386A1 - Cylindre de réglage d'inclinaison - Google Patents

Cylindre de réglage d'inclinaison Download PDF

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Publication number
EP2325386A1
EP2325386A1 EP10176505A EP10176505A EP2325386A1 EP 2325386 A1 EP2325386 A1 EP 2325386A1 EP 10176505 A EP10176505 A EP 10176505A EP 10176505 A EP10176505 A EP 10176505A EP 2325386 A1 EP2325386 A1 EP 2325386A1
Authority
EP
European Patent Office
Prior art keywords
biegeeinstellwalze
clamping
roller
jacket
interior
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.)
Withdrawn
Application number
EP10176505A
Other languages
German (de)
English (en)
Inventor
Jochen Niemann
Lars KRÜGER
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
Original Assignee
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 EP2325386A1 publication Critical patent/EP2325386A1/fr
Withdrawn legal-status Critical Current

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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
    • D21G1/006—Calenders; Smoothing apparatus with extended nips
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • 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
    • D21G1/0013—Driving arrangements for controlled deflection rolls

Definitions

  • the invention relates to a Biegeeinstellwalze for a web treatment apparatus, in particular a calender, with a circumferential flexible jacket whose outer surface is used for smoothing a fibrous web, wherein the jacket is secured at its ends to a respective clamping disk and the length of one, a distance to Inner surface of the shell leaving axis is interspersed, on which the clamping discs are rotatably supported by means of at least one rolling bearing, so that the Biegeeinstellwalze a limited by the shell and the clamping discs roller interior, which is at least partially filled with oil or a comparable lubricant.
  • the invention is based on an earlier patent application DE 102008000998 A1 in which an agent, for example an inert gas, is provided for the explosion protection in a named treatment device.
  • an agent for example an inert gas
  • the bending adjustment roll of a treatment device described in this publication characterizes the prior art and is assumed to be known in this application. Consequently, it is precisely the bending adjusting rolls in which an oil volume is located that are particularly problematical.
  • This oil is used in relation to the jacket for the lubrication of arranged in the roll in a known manner, acting on the jacket support members or for direct pressure build-up in a pressure chamber. Since the oil usually does not completely fill the interior of the roller or is sucked out, a gas mixture of air with an oil mist develops in addition to the hydraulic oil residues.
  • WO 2004/048686 A1 shows a roller according to the preamble, which illustrates how the two clamping disks are synchronized via drive shafts which are mounted within the roller.
  • Such a shaft mounted in the roller can also cause high friction and correspondingly high heats in the roller in the case of defective bearings. Above a temperature of about 180 ° C but is no longer ensured that the existing oil mist does not ignite.
  • EP 1600554 B1 discloses a shoe roll, which has lying inside a rotary drive for the clamping disks, which comprises at least two electric drive motors, the drive shafts are connected to each other torque-locking. These drive shafts are stored in the roller interior and cause the same problem as described above.
  • each clamping disc is driven separately in the Biegeeinstellwalze.
  • Such a drive for each clamping disc can be done from outside.
  • direct, gear, Reibrad- or belt drives are suitable.
  • a higher capital expenditure through the use of at least two drives must be taken into account, but in this way all rolling bearings in the interior of the roller can be omitted. This completely eliminates the risk of igniting an existing oil mist due to a faulty rolling bearing.
  • the drives of both clamping disks are synchronized and adapted to the speed of the fibrous web.
  • a torsion in the roll shell is avoided and by both measures together the paper web is not affected in its course during the treatment in contact with the Biegeeinstellwalze.
  • the flexural balance roller can be operated in an on-line calender whose nip can be closed while the web is running.
  • the web speed is preferably scanned by at least one suitable, calibrated setpoint generator contact.
  • the drive of each clamping disc comprises at least one synchronous motor.
  • these drives can be precisely tuned to each other in their speed.
  • Synchronous motors can be built today with the required torques.
  • the treatment device has with the synchronous motor according to the invention less mechanically loaded parts and thus a longer service life. The maintenance is lower.
  • the drive precision can be increased.
  • a common control is available for the drives of both clamping disks.
  • a common control that monitors, among other things, the actual values of the speeds and the web speed and controls the drives accordingly or preferably permanently controls.
  • the synchronous motor is flanged on the clamping disks.
  • the drive motor is best placed on the axis of the Biegeeinstellwalze and coupled with the clamping disc. Understandably, there must be an anti-twist device for the motor on the stand of the treatment device which carries the bending adjustment roller.
  • a speed feedback for the controller which is integrated in the drive motor.
  • the roller together with its drive thus builds much more compact than, for example, when using asynchronous motors.
  • the motor can be stored together with the clamping disc on the axle, which saves storage, which in turn would form the said risk potential.
  • the roller interior is gas-tight against each rolling bearing by at least one seal. In this way Prevents oil mist from reaching hot-inflated bearings and igniting them.
  • a heat-insulating material with a maximum heat conductivity of less than 3 W / mK is arranged between the roller bearing and the roller interior. This prevents that the heat flow, which emanates from the high temperature of bearings, can be forwarded to the roller interior.
  • the invention also offers the advantage that the jacket has a metallic portion that can be heated by an external heater.
  • the Biegeeinstellwalze usually works against a heated mating roll. Such heating is very beneficial for the smoothing of the fibrous web. While it was feared prior to the invention to increase the risk by heating the jacket of the Biegeeinstellwalze that ignite the oil mist therein, now that the heating is the only possible source of heat for these oil mist, the risk is now precisely calculable and preventable.
  • the metallic component in the jacket is good heat conductive and uniform. It is easily heated by an induction heater or a hot air blower.
  • the jacket is a maximum of 10 mm thick.
  • a thin metal sheath or a plastic sheath with metal coating is favored.
  • Such a jacket is on the one hand very flexible and adaptable to the counter roll, on the other hand ideally with exactly the same amount of heat can be heated, as the fibrous web decreases again.
  • the jacket is fastened radially deformable on the clamping disk. This facilitates the adaptation to the contour of the counter roll or a support shoe.
  • Such radial deformability is, for example, by a device according to the DE 196 45 407 A1 realizable.
  • the roller interior and / or the roller bearings are preferably connected to a temperature monitoring system. This warns if the temperature is too high and there is a risk of ignition of the oil mist.
  • roller bearings are connected to a vibration monitoring system.
  • bearing damage which can lead to high heats, can already be detected by a vibration analysis.
  • FIG. 1 shows the bending roll according to the invention 1.
  • An axle 2 is rotatably mounted in a frame in a manner not shown but known manner in a frame.
  • a circumferential casing 3 surrounds the axis 2. This is fixed in a right and a left clamping disk 4, 5, which in turn by means of rolling bearings 6, 7 are rotatably mounted on the axis 2 or a ring pushed onto it.
  • an annular roller interior 8 This is at least partially filled with oil. In the unfilled cavities, an air-oil mist can form, which is an explosive gas mixture.
  • both clamping disks 4, 5 have a separate drive 9, 10.
  • These drives 9, 10 are attached at each end to the axis 2 in the form of a synchronous motor 26, 27 and flanged to the clamping disks 4, 5.
  • Both synchronous motors 26, 27 are permanently controlled by a controller 11 with suitable frequency converters to the same speed and adapted to the fiber web speed.
  • FIG. 2 The jacket 3 is pressed by means of a concave-shaped shoe 19 against a counter-roller 16 via at least one support member 17 which is hydraulically supported in a known manner in a cylinder 18 of the axle 2.
  • the shoe 19 generally extends across the width of the fibrous web 20 to be treated. If a plurality of support members 17 are arranged in the axial direction of the flexure adjustment cradles 1, which are independently pressurizable, a transverse deflection profile and thus a smoothness transverse profile of the fibrous web 20 can be adjusted become.
  • the jacket as in this embodiment, consists of a thin steel sheet, it can also be warmed up conveniently by means of an induction heater 21, which can likewise operate in zones with different energy discharges.
  • an induction heater 21 With a heated counter roll, it is possible to heat the fibrous web 20 on both sides and smooth.
  • the jacket 3 outside should have an equally smooth surface as the counter roll, at least maintain a Ra value below 0.2 microns.
  • the metal layer may also be on a plastic jacket, preferably of a composite material, be applied. To ensure the necessary flexibility, the sheath 3 should not be thicker than 10 mm.
  • FIG. 3 shows the connection of the shell 3 to the clamping disk 4.
  • a cross-fastening element 22 which is fixable via a screw connection to the clamping plate 4
  • the jacket 3 is held.
  • the jacket is supported on an elastic ring 23. This offers the possibility of the jacket when passing through the nip 24 with the counter-roller 16 (see FIG. 2 ), to allow an evasive movement, so that the allowable stresses in the jacket 3 are not exceeded.
  • the roll can also be used in Mehrwalzenkalandern or in the press section of a paper machine.

Landscapes

  • Rolls And Other Rotary Bodies (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
EP10176505A 2009-11-20 2010-09-14 Cylindre de réglage d'inclinaison Withdrawn EP2325386A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910046924 DE102009046924A1 (de) 2009-11-20 2009-11-20 Biegeeinstellwalze

Publications (1)

Publication Number Publication Date
EP2325386A1 true EP2325386A1 (fr) 2011-05-25

Family

ID=43216972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10176505A Withdrawn EP2325386A1 (fr) 2009-11-20 2010-09-14 Cylindre de réglage d'inclinaison

Country Status (3)

Country Link
EP (1) EP2325386A1 (fr)
CN (1) CN202116939U (fr)
DE (1) DE102009046924A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013014025A1 (fr) * 2011-07-26 2013-01-31 Voith Patent Gmbh Cylindre à sabot, procédé de remplacement d'une enveloppe sur un cylindre à sabot et bague élastique pour un cylindre à sabot
DE102012205187A1 (de) 2012-03-30 2013-10-02 Voith Patent Gmbh Presswalze für eine Maschine zur Herstellung einer Faserstoffbahn
CN104340647A (zh) * 2014-10-11 2015-02-11 枣庄学院 一种胶辊运行状态监测装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645407A1 (de) 1996-11-04 1998-05-07 Voith Sulzer Papiermasch Gmbh Schuhpresse
DE29902451U1 (de) * 1998-12-16 1999-05-27 Valmet Corp., Helsinki Vorrichtung zum Kalandrieren von Papier
WO2004048686A1 (fr) 2002-11-27 2004-06-10 Metso Paper, Inc. Carton et procede de fabrication dudit carton
EP1600554B1 (fr) 2004-05-26 2009-06-03 Voith Patent GmbH Rouleau à sabot
EP2107160A1 (fr) * 2008-04-04 2009-10-07 Voith Patent GmbH Dispositif de traitement de bande

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645407A1 (de) 1996-11-04 1998-05-07 Voith Sulzer Papiermasch Gmbh Schuhpresse
DE29902451U1 (de) * 1998-12-16 1999-05-27 Valmet Corp., Helsinki Vorrichtung zum Kalandrieren von Papier
WO2004048686A1 (fr) 2002-11-27 2004-06-10 Metso Paper, Inc. Carton et procede de fabrication dudit carton
EP1600554B1 (fr) 2004-05-26 2009-06-03 Voith Patent GmbH Rouleau à sabot
EP2107160A1 (fr) * 2008-04-04 2009-10-07 Voith Patent GmbH Dispositif de traitement de bande
DE102008000998A1 (de) 2008-04-04 2009-10-08 Voith Patent Gmbh Bahnbehandlungsvorrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013014025A1 (fr) * 2011-07-26 2013-01-31 Voith Patent Gmbh Cylindre à sabot, procédé de remplacement d'une enveloppe sur un cylindre à sabot et bague élastique pour un cylindre à sabot
DE102012205187A1 (de) 2012-03-30 2013-10-02 Voith Patent Gmbh Presswalze für eine Maschine zur Herstellung einer Faserstoffbahn
CN104340647A (zh) * 2014-10-11 2015-02-11 枣庄学院 一种胶辊运行状态监测装置
CN104340647B (zh) * 2014-10-11 2017-01-18 滕州力华米泰克斯胶辊有限公司 一种胶辊运行状态监测装置

Also Published As

Publication number Publication date
DE102009046924A1 (de) 2011-05-26
CN202116939U (zh) 2012-01-18

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