EP1693509B1 - Surveillance d'un rouleau de presse - Google Patents

Surveillance d'un rouleau de presse Download PDF

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Publication number
EP1693509B1
EP1693509B1 EP05111361A EP05111361A EP1693509B1 EP 1693509 B1 EP1693509 B1 EP 1693509B1 EP 05111361 A EP05111361 A EP 05111361A EP 05111361 A EP05111361 A EP 05111361A EP 1693509 B1 EP1693509 B1 EP 1693509B1
Authority
EP
European Patent Office
Prior art keywords
monitoring
fibrous web
lubricant
roll
press
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.)
Expired - Fee Related
Application number
EP05111361A
Other languages
German (de)
English (en)
Other versions
EP1693509A1 (fr
Inventor
Josef Schneid
Jörg Dr. Rheims
Thomas Wöhner
Thomas Hermsen
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 EP1693509A1 publication Critical patent/EP1693509A1/fr
Application granted granted Critical
Publication of EP1693509B1 publication Critical patent/EP1693509B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0088—Lubricating means
    • 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
    • D21G9/0036—Paper-making control systems controlling the press or drying section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
    • B30B3/04—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones

Definitions

  • the invention relates to a method for monitoring a press roll for treating a paper, cardboard, tissue or another fibrous web in a machine for producing and / or finishing the same, which has a rotatable roll shell made of plastic, which is supported on a stationary pressing element wherein the gap between the roll shell and the pressing surface of the pressing member is lubricated with a liquid lubricant, at least one spaced apart from the roll shell, optical and possibly also at least one thermographic monitoring unit monitors the condition of the roll shell and supplies an interference signal to the machine control upon leakage of the lubricant.
  • the smoothing rollers are previously placed under the heated counter-rollers. If, however, the underside of the fibrous web is to come into contact with the heated counter-roller, it is guided around the upper counter-roller in the opposite direction through the calendering nip.
  • the object of the invention is to enable the simplest possible and reliable monitoring of the state of the roll shell with respect to lubricant outlet.
  • the object has been achieved in that the or at least one of the optical monitoring unit (s) monitors a surface of the fibrous web for discoloration.
  • the distance to the press roller, the risk of damage or contamination of the monitoring unit can be greatly reduced.
  • the accessibility of the press assembly is not affected by the monitoring arrangement.
  • the machine controller receives an interference signal that indicates a leak or the risk of leakage, so the press nip, which forms the press roll with a counter roll, should be opened immediately.
  • the supply of lubricant to the press roll and the rotation of the roll mantle should be reduced or preferably stopped.
  • the monitoring unit can detect the entire width of the press roll or the fibrous web or only a part thereof. In a partial detection, the monitoring unit should traverse axially along the press roll or several monitoring units are arranged axially next to one another.
  • a monitoring system becomes possible in that the monitoring unit preferably monitors the surface of the fibrous web facing the press roller.
  • the monitoring unit should send an interference signal to the machine unit in strip-like discoloration of the surface of the fibrous web.
  • the optical recognition of leaking lubricant can be substantially improved if the lubricant is added to signal substances which are visually easily recognizable.
  • the press arrangement serves to smooth a fibrous web 1 and is formed by a press roll 4 and a cylindrical and heated counter roll 5 arranged underneath.
  • the press roll 4 has a rotating, flexible roll shell 2 made of plastic, which is pressed by a pressing element 3 to the counter roll 5 out.
  • the pressing element 3 has a concave pressing surface to form an extended press nip, the gap between this pressing surface and the inside of the roll shell 2 being lubricated with a liquid lubricant. Hydraulic oil, which is supplied to the pressing element 3 via a supply line 11, is often used as the lubricant.
  • the state of the roll mantle 2 is hereby monitored, for example, directly or indirectly by three independent monitoring systems.
  • the monitoring units 6, 7, 8 of these monitoring systems send an interference signal to the machine control 10.
  • the machine control 10 stops in case of failure via a valve 12 in the supply line 11, the further supply of lubricant and thus limits the possible damage.
  • the machine control 10 opens the press nip and brakes the roll shell 2 of the press roll 4.
  • a first monitoring unit 6 detects temperature changes on the surface of the roll mantle 2 by means of thermographic monitoring methods. If local temperature increases are detected, this indicates overloading of the roll shell 2 and thus the risk of cracking or hole formation. Therefore, this leads to generation of a noise signal.
  • a local temperature reduction leads to the transmission of an interference signal. Since the temperature of the supplied lubricant is usually about 20 to 30 ° C lower than the temperature of the surface of the roll shell 2, a leakage of lubricant usually has a lowering of the surface temperature in the leak area result.
  • the monitoring unit 7 is formed by a digital video camera. This optical monitoring unit 7 observes the surface of the roll mantle 2. To make leaking lubricant more visible to the video camera, a fluorescent substance is added to the lubricant.
  • the surface of the roll shell 2 is irradiated with ultraviolet light, resulting in the luminescent substance in the licking lubricant.
  • the third monitoring system is also formed by an optical monitoring unit 8 which monitors the surface of the fibrous web 1 facing the press roller 4.
  • this monitoring unit 8 can also detect local discoloration of the fibrous web 1 as a result of leakage of lubricant.
  • strip-like discoloration indicates a contamination with leaking lubricant and lead to the transmission of a noise signal.
  • the monitoring units 6, 7, 8 can be traversed transversely to the fibrous web 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Control Of Presses (AREA)
  • Press Drives And Press Lines (AREA)
  • Saccharide Compounds (AREA)

Claims (5)

  1. Dispositif pour la surveillance d'un rouleau de presse (4) pour le traitement d'une bande de papier, de carton, d'essuie-tout ou d'une autre matière fibreuse (1) dans une machine de fabrication et/ou de traitement de celle-ci, qui comporte une enveloppe de rouleau rotative (2) en matière plastique, qui s'appuie sur un élément de presse stationnaire (3), dans lequel l'espace entre l'enveloppe de rouleau (2) et la surface de pressage de l'élément de presse (3) est lubrifié avec un lubrifiant liquide, dans lequel au moins une unité de surveillance optique et éventuellement aussi au moins une unité de surveillance thermographique (6, 7, 8), espacées de l'enveloppe de rouleau (2), surveillent l'état de l'enveloppe de rouleau (2) et fournissent un signal de panne à la commande de la machine (10) en cas de fuite du lubrifiant, caractérisé en ce que ladite au moins une unité de surveillance optique (8) surveille une surface de la bande de matière fibreuse (1) afin de détecter une décoloration.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on ajoute au lubrifiant des substances de signalisation, qui améliorent la reconnaissance optique du lubrifiant en fuite.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la commande de la machine (10) réduit ou de préférence arrête la rotation de l'enveloppe de rouleau (2) après réception d'un signal de panne.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de surveillance (8) surveillant la surface de la bande de matière fibreuse surveille la surface de la bande de matière fibreuse (1) tournée vers le rouleau de presse (4).
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de surveillance (8) surveillant la surface de la bande de matière fibreuse envoie un signal de panne à la commande de la machine (10) en cas de décolorations en forme de rubans de la surface de la bande de matière fibreuse (1).
EP05111361A 2005-02-21 2005-11-28 Surveillance d'un rouleau de presse Expired - Fee Related EP1693509B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005007835A DE102005007835A1 (de) 2005-02-21 2005-02-21 Presswalzenüberwachung

Publications (2)

Publication Number Publication Date
EP1693509A1 EP1693509A1 (fr) 2006-08-23
EP1693509B1 true EP1693509B1 (fr) 2011-03-23

Family

ID=36293557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05111361A Expired - Fee Related EP1693509B1 (fr) 2005-02-21 2005-11-28 Surveillance d'un rouleau de presse

Country Status (3)

Country Link
EP (1) EP1693509B1 (fr)
AT (1) ATE503055T1 (fr)
DE (2) DE102005007835A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109311106A (zh) * 2016-06-14 2019-02-05 意玛克股份公司 切削刀具

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007045895A1 (de) 2007-09-26 2009-04-09 Voith Patent Gmbh Bandkalandervorrichtung und Verfahren zum Betrieb einer Bandkalandervorrichtung
DE102008002658A1 (de) * 2008-06-26 2009-12-31 Voith Patent Gmbh Verfahren und Vorrichtung zur Erkennung des Zustandes eines Bandes
CN107322987A (zh) * 2017-07-26 2017-11-07 安庆奥迪斯丹包装有限公司 一种瓦楞纸箱压平装置
DE102018122780A1 (de) * 2018-09-18 2020-03-19 Voith Patent Gmbh Pressmantel, dessen Verwendung sowie Presswalze und Schuhpresse
DE102018010014A1 (de) * 2018-12-31 2020-07-02 Siempelkamp Maschinen- Und Anlagenbau Gmbh Vorrichtung und Verfahren zur Überwachung eines Schmierzustandes eines umlaufenden Bandes zum Transport von Pressgut, sowie kontinuierlich betreibbare Presse
DE102019126075A1 (de) * 2019-09-27 2021-04-01 Voith Patent Gmbh Pressmantel, dessen Verwendung sowie Schuhpresse und Maschine
DE102022108709A1 (de) * 2022-04-11 2023-10-12 Voith Patent Gmbh Verfahren zum Einstellen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111283B (fi) * 1997-10-20 2003-06-30 Metso Paper Inc Paperikoneen tai paperin jälkikäsittelykoneen nipin läpi kulkevan pinnan likaantumisen ja/tai vaurioitumisen havaitsemismenetelmä
AU2001285973A1 (en) * 2000-09-06 2002-03-22 Metso Paper Inc. Method and equipment for cleaning and maintaining rolls
DE10101467A1 (de) * 2001-01-12 2002-07-18 Zander Birgitt Leckage-Suche
FI114741B (fi) * 2001-05-11 2004-12-15 Metso Automation Oy Lämpökuvaukseen perustuva laadun- ja kunnonvalvontamenetelmä
DE10325947C5 (de) * 2003-06-07 2009-11-26 Voith Patent Gmbh Verfahren zum Behandeln einer Bahn, insbesondere einer Papierbahn

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109311106A (zh) * 2016-06-14 2019-02-05 意玛克股份公司 切削刀具
CN109311106B (zh) * 2016-06-14 2021-04-20 意玛克股份公司 切削刀具

Also Published As

Publication number Publication date
DE502005011155D1 (de) 2011-05-05
EP1693509A1 (fr) 2006-08-23
ATE503055T1 (de) 2011-04-15
DE102005007835A1 (de) 2006-08-31

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