EP1972718A2 - Dispositif de guidage ou de transfert d'une bande en papier, carton ou autre matière fibreuse - Google Patents

Dispositif de guidage ou de transfert d'une bande en papier, carton ou autre matière fibreuse Download PDF

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Publication number
EP1972718A2
EP1972718A2 EP08152356A EP08152356A EP1972718A2 EP 1972718 A2 EP1972718 A2 EP 1972718A2 EP 08152356 A EP08152356 A EP 08152356A EP 08152356 A EP08152356 A EP 08152356A EP 1972718 A2 EP1972718 A2 EP 1972718A2
Authority
EP
European Patent Office
Prior art keywords
web
roller
belt conveyor
upstream
belt
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Withdrawn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
EP08152356A
Other languages
German (de)
English (en)
Other versions
EP1972718A3 (fr
Inventor
Wolfgang Drefs
Sylvain Demers
Josef Schneid
Christian Löffler
Dirk Lisner
Mohammad Parva
Helmuth Siess
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 EP1972718A2 publication Critical patent/EP1972718A2/fr
Publication of EP1972718A3 publication Critical patent/EP1972718A3/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Withdrawn legal-status Critical Current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
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/006—Cutting the edges of the paper-web

Definitions

  • the invention relates to a device for guiding or transferring a paper, cardboard or other fibrous web from a web-emitting web guide surface of a first processing or manufacturing station to the next station or to a web-receiving web guide surface along a web travel path within a machine for manufacturing and / or Finishing the fibrous web, comprising at least one edge nozzle for detaching the web or a threading strip separated from the web by the web-dispensing guide surface by means of an air jet ejected from the at least one edge nozzle and comprising a belt conveyor for sucking and further transporting the web or the threading strip to the next web-receiving Web guide surface, wherein the belt conveyor comprises a vacuum box and an air-permeable endless conveyor belt guided over an upstream roller and a downstream roller and wherein the upstream roller is formed as a suction roller and forms an upstream end of the belt conveyor.
  • EP-A2 1 440 926 Such a device is known from EP-A2 1 440 926 known. On the EP-A1 1 424 441 and the EP-B1 1 245 729 should be referenced.
  • the acceleration of the transported threading strip is too low and is thus in sharp contrast to the full machine and web speed during the transfer process. This allows the threading strip to remain in the pick-up area, form a ball, or result in a so-called double-stripe (i.e., double tailed), with the result of snagging and tearing off the pick-up strip in the pick-up area.
  • double-stripe i.e., double tailed
  • this device is more suitable for fibrous webs with a low basis weight.
  • the energy of the edge nozzles used is often insufficient to first guide the web or the threading strip and secondly separate it in the transverse direction for the purpose of achieving a new web or threading strip beginning for the transfer.
  • the object of the invention is therefore to provide a device with which the disadvantages of the cited prior art can be avoided.
  • the upstream roller has a smaller Diameter than the downstream roller, whereby the vacuum belt conveyor can arrange close enough to the web-emitting web guide surface.
  • a transversely acting separating element is associated with the upstream end of the belt conveyor.
  • the separating element is used to separate the web or the threading strip and the formation of a new web start.
  • the device according to the invention is characterized by its compactness and the interaction of the individual elements.
  • the per se known edge nozzles, the separating element, the vacuum conveyor belt conveyor, its suction roll and the endless conveyor belt form a unit with each other, which can be easily retrofitted in existing machines.
  • the separating element is designed as a stationary, toothed knife.
  • the separating element can also be designed as a standing cutting blade with a smooth cutting surface.
  • At least one rotating knife would form the separating element. It could also be several knives arranged side by side.
  • the fibrous web or the EinfädelstMail at even higher tensile force and even faster wrinkle and flutter-free to the next web-receiving web guide surface and / or the next treatment station of the fibrous web can be conducted, it is advantageous to let the belt conveyor even closer to the web-emitting surface.
  • This can be done by assigning a deflecting roller to the upstream roll or suction roll.
  • the suction roller can thereby be further reduced in diameter.
  • the guide roller can also be used in only a small diameter. This makes it possible to bring the belt conveyor with its upstream end again closer to the delivery surface of the threading strip.
  • the upstream roller i. the suction roll has a smaller diameter than the downstream roll, i. having the drive roller.
  • FIG. 1 a device 1 for guiding or transferring a fibrous web 2 is shown.
  • the fibrous web 2 is intended to be conveyed from a web-issuing web guiding surface or processing station 3 to the next station 4 or to an intermediate, web-receiving web guiding surface 5 along a web Web run L within a machine for the production and / or finishing of the fibrous web 6 when starting the machine at production start or after a web break are guided or threaded.
  • the device has for this purpose at least one edge nozzle 7 or blowpipes. These edge nozzles serve to detach the web 2 from the web-dispensing guide surface 3, which, as shown in the arrow direction, runs after pulping into a pulper (dissolver) 8 arranged below the guide surface 3.
  • a separating element 11 or 11 ' ( FIG. 1 intended to represent with 11 and 11 'different arrangements) for St Shapeab heating in the transverse direction and to form the new web or Einfädelstsammlungterrorismes 2b provided.
  • the threading strip 2b as I said, transversely severed while at the same time a new beginning or free end of the threading 2b created.
  • This can now fed to the web-receiving web guide surface 5 and thus the threading into the manufacturing machine 6 are completed and then the web are driven ever wider, until the full web width of the fibrous web 2 is reached.
  • the said belt conveyor 10 with its web-receiving web guide surface 5 has a vacuum box 12 and an air-permeable endless conveyor belt 13.
  • the conveyor belt 13 forms with its top the already mentioned web-receiving web guide surface 5 and runs with its inside over an upstream arranged roll 14 and a downstream arranged roll 15th
  • the upstream roller 14 is formed as a suction roller and forms an upstream end 16 of the belt conveyor 10, whereas the downstream roller is a drive roller 15.
  • the upstream roller or the suction roller 14 is made in a very small diameter, namely in a smaller diameter than the drive roller 15.
  • the upstream end 16 can reach as close as possible to the web-dispensing web guiding surface 3, which enables the belt conveyor 10 to be able to remove the web or the transfer strip immediately and safely from the web-dispensing surface 3.
  • a trouble-free transfer can be ensured even in fibrous webs with higher basis weight in g / m 2 .
  • the belt conveyor 19 is constructed substantially like the belt conveyor 10 and also has a respective conveyor belt 22 running via rollers 20 and 21 and an upstream end 23 and a downstream end 24.
  • the downstream end 17 of the belt conveyor 10 is located immediately adjacent, approximately above the upstream end 23 of the belt conveyor 19. This is a fluent and flutter-free transfer or continuation of the strip 2b and the fibrous web 2 is continued up to the next treatment station 4th
  • the web-dispensing surface 3 in the example to represent the surface of a drying cylinder, against which a scraper 18 is employed.
  • both the belt conveyor 10 and the belt conveyor 19 can be varied in their length by special designs of their respective housings, by stretching or compressing them, if desired.
  • these devices can be adapted to the particular local conditions in the machine 6 without much effort and are therefore extremely flexible.
  • said length adjustment is not shown in the figures.
  • FIG. 2 the belt conveyor 10 according to the invention is shown with its endless conveyor belt 13 in perspective.
  • the separating element 11 (out of Fig.1 ) is formed here in the form of a toothed continuous blade 11.1.
  • the pivotable separating element 11 and also the edge nozzles 7 are arranged at the upstream end 16 and fastened by means of holding devices 25 directly to the housing 26 of the belt conveyor 10.
  • This is a very compact, but easy to implement, effective device for immediate suction and to guide or transfer a fibrous web created.
  • a not shown, standing cutting blade 11.2 with a smooth cutting surface or at least one rotating blade 11.3 can also be provided as separating element 11. Their selection depends on the thickness or the weight per unit area in g / cm 2 of the fibrous web 2 to be guided or transferred.
  • FIG. 3 finally shows a section of the FIG. 1 with a modified variant of the upstream end 16 of the belt conveyor 10.
  • the upstream roller or the suction roller 14 is associated with a guide roller 30, so that the endless conveyor belt 13 to three rollers, so suction roller 14, guide roller 30 and drive roller 15 runs.
  • the suction roller 14 can thereby be in even smaller diameter than in FIG. 1 form training, why the belt conveyor can be brought closer to the web-emitting surface 3 and why it is possible, the fibrous web 2 and the EinfädelstMail 2b at even higher tensile force and even faster wrinkle and flutter-free to the next web-receiving web guide surface 4 and 19 to conduct.

Landscapes

  • Advancing Webs (AREA)
  • Replacement Of Web Rolls (AREA)
EP08152356A 2007-03-23 2008-03-06 Dispositif de guidage ou de transfert d'une bande en papier, carton ou autre matière fibreuse Withdrawn EP1972718A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710014118 DE102007014118A1 (de) 2007-03-23 2007-03-23 Vorrichtung zum Führen bzw. Überführen einer Papier-, Karton- oder anderen Faserstoffbahn

Publications (2)

Publication Number Publication Date
EP1972718A2 true EP1972718A2 (fr) 2008-09-24
EP1972718A3 EP1972718A3 (fr) 2009-08-05

Family

ID=39535247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08152356A Withdrawn EP1972718A3 (fr) 2007-03-23 2008-03-06 Dispositif de guidage ou de transfert d'une bande en papier, carton ou autre matière fibreuse

Country Status (2)

Country Link
EP (1) EP1972718A3 (fr)
DE (1) DE102007014118A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011036341A1 (fr) * 2009-09-23 2011-03-31 Metso Paper, Inc. Agencement d'engagement de la pointe d'une machine de formation de bande continue de fibre, appareil pour l'agencement et machine de formation de bande continue de fibre
EP2192227A3 (fr) * 2008-12-01 2013-09-11 Voith Patent GmbH Dispositif de guidage ou de transfert d'une bande de matière fibreuse

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008002260A1 (de) 2008-06-06 2009-12-10 Voith Patent Gmbh Vorrichtung zum Führen bzw. Überführen einer Faserstoffbahn
DE102015224280A1 (de) * 2015-12-04 2017-06-08 Voith Patent Gmbh Vorrichtung und Verfahren zur Übergabe einer Bahn innerhalb einer Papiermaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1424441A1 (fr) 2002-11-28 2004-06-02 Voith Paper Patent GmbH Procédé et dispositif pour enfiler une bande de papier
EP1440926A2 (fr) 2000-11-14 2004-07-28 Voith Paper Patent GmbH Transporteur à courroie aspirante et machine comportant un tel convoyeur pour la fabrication ou la finition d'une bande de papier
EP1245729B1 (fr) 2001-03-26 2006-10-11 Voith Patent GmbH Dispositif de transfert d'une bande de papier

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3355349A (en) * 1964-12-14 1967-11-28 Andrew G Devlin Apparatus for conveying lead strip from driers to calenders in paper-making
FI112678B (fi) * 2001-08-22 2003-12-31 Metso Paper Inc Menetelmä ja laitteisto päänvientinauhan viemiseksi vapaavälin yli
CA2028443C (fr) * 1990-10-24 1996-04-30 Stanley Hui Mah Dispositif de mise en route de l'amorce du papier par rotation inversee des couteaux
US5355593A (en) * 1992-06-24 1994-10-18 J.M. Voith Gmbh Device for transferring a fiber web

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1440926A2 (fr) 2000-11-14 2004-07-28 Voith Paper Patent GmbH Transporteur à courroie aspirante et machine comportant un tel convoyeur pour la fabrication ou la finition d'une bande de papier
EP1245729B1 (fr) 2001-03-26 2006-10-11 Voith Patent GmbH Dispositif de transfert d'une bande de papier
EP1424441A1 (fr) 2002-11-28 2004-06-02 Voith Paper Patent GmbH Procédé et dispositif pour enfiler une bande de papier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2192227A3 (fr) * 2008-12-01 2013-09-11 Voith Patent GmbH Dispositif de guidage ou de transfert d'une bande de matière fibreuse
WO2011036341A1 (fr) * 2009-09-23 2011-03-31 Metso Paper, Inc. Agencement d'engagement de la pointe d'une machine de formation de bande continue de fibre, appareil pour l'agencement et machine de formation de bande continue de fibre

Also Published As

Publication number Publication date
DE102007014118A1 (de) 2008-09-25
EP1972718A3 (fr) 2009-08-05

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