EP0785306A2 - Dispositif de guidage d'une bande de matériau - Google Patents

Dispositif de guidage d'une bande de matériau Download PDF

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Publication number
EP0785306A2
EP0785306A2 EP96117463A EP96117463A EP0785306A2 EP 0785306 A2 EP0785306 A2 EP 0785306A2 EP 96117463 A EP96117463 A EP 96117463A EP 96117463 A EP96117463 A EP 96117463A EP 0785306 A2 EP0785306 A2 EP 0785306A2
Authority
EP
European Patent Office
Prior art keywords
web
blow box
stabilizer
conveyor belt
arrangement
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.)
Granted
Application number
EP96117463A
Other languages
German (de)
English (en)
Other versions
EP0785306A3 (fr
EP0785306B1 (fr
Inventor
Wolfgang Mueller
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 Sulzer Papiermaschinen 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
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Application filed by Voith Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0785306A2 publication Critical patent/EP0785306A2/fr
Publication of EP0785306A3 publication Critical patent/EP0785306A3/fr
Application granted granted Critical
Publication of EP0785306B1 publication Critical patent/EP0785306B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices

Definitions

  • the invention relates to an arrangement for guiding a material web, in particular a fibrous web, according to the preamble of claim 1.
  • an arrangement for guiding a material web which has the features mentioned in claim 1. Because the arrangement for guiding a material web has at least one blow box, which is attached in the region of the lateral web edge on the sides of the web stabilizer, an optimal seal can be achieved in that the blow box is exactly aligned independently of the web stabilizer and can be adapted to the course of the material web.
  • the blow box - regardless of the web stabilizer - can be arranged in accordance with the deflection of the conveyor belt guiding the material web through the manufacturing machine, in order to ensure an optimal seal from the surroundings. In this way it is ensured that the web edges are fixed on the conveyor belt in such a way that fluttering can practically be ruled out, which is particularly important at high speeds.
  • An embodiment of the arrangement is particularly preferred, which is characterized in that at least one blow box is constructed in several parts.
  • the individual elements of the blow box can thus be arranged or adjusted independently of one another in order to ensure an optimal seal from the surroundings.
  • the arrangement described below for guiding a material web can be used in general. It is explained on the basis of a paper production machine which has a dryer section, in which the material or paper web is guided in a meandering manner around the drying cylinder and web guide rollers together with a conveyor belt also referred to as a dry felt or wire.
  • Figure 1 shows a section of a dryer section of a paper manufacturing machine with an arrangement 1 for guiding a material web or paper web 3, which is guided together with a conveyor belt 5 from a first drying cylinder 7 via a web guide roller 9 to a second drying cylinder 11, in the area of the drying cylinder 7, 11 the material web rests on the cylinder surface and the conveyor belt 5 in the area of the web guide roller 9.
  • a first free running path 13 is created between the first drying cylinder 7 and the web guide roller 9 and a second free running path 15 between the web guide roller 9 and the second drying cylinder 11.
  • a web stabilizer 17 is provided between the running routes 13 and 15, which is designed, for example, as a suction box and can vacuum the area of the free running routes 13 and 15 and also the web guide roller 9.
  • the web stabilizer 17 stabilizes the paper web 3 on the conveyor belt 5 in the region of the free running paths 13 and 15. If the web guide roller 9 is also vacuumed by the web stabilizer 17, the material web guided over the surface of the web guide roller 9 also becomes sucked on the conveyor belt 5 and thus stabilized.
  • the web stabilizer can also be designed as a transfer foil or air guide box, which is used to transfer the paper web from the first drying cylinder 7 to the web guide roller 9 and / or from the web guide roller 9 to the subsequent drying cylinder 11 and to transfer the paper web with negative and / or positive pressure or blowing air can be acted upon.
  • an air guiding device 19 in the form of a scraper is provided, which removes the air entrained by the conveyor belt 5 so that it does not enter the area of the web stabilizer 7 arrives.
  • the web stabilizer 17 extends essentially over the entire width of the paper web 3.
  • a separate blow box 21 is preferably provided on both sides in the region of the edge of the paper web 3.
  • the blow box 21 shown in Figure 1 is attached to the side wall 23 of the web stabilizer 17.
  • the blow box 21 is mounted so that it can be aligned and adjusted independently of the web stabilizer 17.
  • the blow box 21 shown in this embodiment is the opening nip 25 assigned between the surface of the drying cylinder 7 and the running paper web 3. It is provided with a supply air connection Z and has at least one blowing nozzle which opens in the direction of the conveyor belt 5 and which is explained in more detail with reference to FIG. 4.
  • the blow box 21 is supplied with air by means of the supply air connection Z, which is sucked off by the web stabilizer 17, for example in the form of a suction box, and / or delivered by a separate compressed air supply device, for example a compressor.
  • a separate compressed air supply device for example a compressor.
  • An exemplary embodiment of the arrangement is preferred in which the blow box 21 is supplied exclusively with the air drawn off by the web stabilizer 17, which simplifies the construction of the drying section and ensures reliable transfer of the paper web 5, even at high production speeds.
  • FIG. 2 shows a modified embodiment of an arrangement 1 for guiding a material web or paper web 3.
  • the cylinders around which the paper web 3 is guided together with a conveyor belt 5 have the same diameter here. They can both be designed as drying cylinders 7 and 7 '.
  • the free running path 13 between the two drying cylinders 7 and 7 ' is here also assigned a web stabilizer 17, which, however, does not act on the free running path which runs from the drying cylinder 7'.
  • a blow box 21 is attached to its side wall 23 'and is arranged in the region of the edge of the paper web 3. Unlike the one shown in FIG. 1, the blow box 21 here has two supply air connections Z 1 and Z 2.
  • the two blow boxes shown in FIGS. 1 and 2 have in common that they are arranged on the side of the conveyor belt 5 and through this stabilize the paper web 3 on the conveyor belt 5.
  • FIG. 3 again shows a section of a machine for producing a material web or a paper production machine, within which a paper web 3 is guided over two rollers.
  • the paper web 3 can be guided by a deflecting roller 27 onto a drying cylinder 7, the diameter of which is substantially larger than that of the deflecting roller 27.
  • the deflecting roller 27 can serve as a web guide roller. It is also conceivable to heat them.
  • the free running path 13 interacts with a blow box 21, which here is of multi-part design and has a first partial blow box 21 'and a second partial blow box 21' '. It is also conceivable to use several small web stabilizers to guide the paper web in the area of the free running path 13.
  • Each of the blow boxes 21 'and 21'' has a supply air connection Z.
  • the blow box 21 is also arranged in the region of the edge of the paper web 3.
  • the blow box shown in Figure 3 is characterized by the fact that it extends over the entire length of the free running path 13 and can thus act both on the running nip 26 and on the running nip 25, in which the material web on the surface of the drying cylinder 7 accumulates. The air entrained by the drying cylinder 7 and the material web creates an overpressure in the nip 25.
  • one of the partial blow boxes 21 'and 21' ' can be dispensed with, so that only the running nip 26 or the running nip 25 is subjected to stabilization or guidance of the material web.
  • FIG. 4 finally shows a cross section through a blow box 21.
  • this has a housing 29 which is suitably connected to an air supply device, so that an overpressure prevails within the housing 29.
  • the air exits through an outlet slot 31 that opens near a curved housing portion 33.
  • the outlet slot 31 is designed such that the air flows along the curved housing section 33 and exits from a gap 35 located between the housing 29 and the conveyor belt 5.
  • the air is directed in such a way that a negative pressure builds up in the space 37 between web stabilizer 17 and conveyor belt 5, or the pressure still present by web stabilizer 17 is increased.
  • the blow box 21 is in the region of the edge 39 of the material web or paper web 3 arranged and thus causes in particular a safe guidance of the web edge, so that fluttering and thus the risk of a web break can be practically avoided entirely.
  • the conveyor belt 5 is shown in two positions: the rest position of the conveyor belt 5 is shown with solid lines, its working position with dashed lines.
  • FIG. 4 clearly shows that the blow box 21, which is attached to a side wall 23 of the web stabilizer 17, can be adjusted and adjusted independently of the latter relative to the conveyor belt 5 and the paper web 3.
  • the arrangement of the outlet slot 31 can also be chosen so that the outflowing air optimally abuts the curved housing section 33 and reliably delimits the intermediate space 37 from the environment outside the paper-making machine in such a way that a negative pressure is built up there.
  • blow boxes are preferably attached to both sides of the web stabilizer, as shown in the figures. Since the blow boxes are formed separately from the web stabilizer, the blow boxes can be aligned independently of this with respect to the conveyor belt 5 or the paper web 3, so that reliable vacuum generation on the sides the paper web 3 is guaranteed. If the blow box is formed in several parts or several small blow boxes are arranged one behind the other in the area of a free running path, these can be adjusted independently of one another and thus optimally adapted to the course of the conveyor belt 5 and paper web 3.
  • blow boxes interact with practically arbitrarily designed web stabilizers and can therefore be used universally.

Landscapes

  • Paper (AREA)
  • Advancing Webs (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP96117463A 1996-01-20 1996-10-31 Dispositif de guidage d'une bande de matériau Expired - Lifetime EP0785306B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19601989 1996-01-20
DE19601989A DE19601989C2 (de) 1996-01-20 1996-01-20 Anordnung zum Führen einer Materialbahn

Publications (3)

Publication Number Publication Date
EP0785306A2 true EP0785306A2 (fr) 1997-07-23
EP0785306A3 EP0785306A3 (fr) 1998-09-09
EP0785306B1 EP0785306B1 (fr) 2002-05-02

Family

ID=7783253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117463A Expired - Lifetime EP0785306B1 (fr) 1996-01-20 1996-10-31 Dispositif de guidage d'une bande de matériau

Country Status (5)

Country Link
US (1) US5893505A (fr)
EP (1) EP0785306B1 (fr)
CN (1) CN1158816A (fr)
CA (1) CA2195142A1 (fr)
DE (2) DE19601989C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017123189A1 (de) 2017-10-06 2019-04-11 Voith Patent Gmbh Bahnführungsvorrichtung zum Stabilisieren einer flächigen Materialbahn, Trockenpartie einer Bahnführungsvorrichtung und Verfahren zum Betreiben einer Bahnführungsvorrichtung zum Stabilisieren einer flächigen Materialbahn in einer Trockenpartie

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH693304A5 (de) * 1997-08-01 2003-05-30 Roland Man Druckmasch Wendestange und Wendestangenanordnung für eine Rollenrotationsdruckmaschine.
US6325896B1 (en) * 1999-09-23 2001-12-04 Valmet-Karlstad Ab Apparatus for transferring a fast running fibrous web from a first location to a second location
ATE315125T1 (de) * 2000-02-26 2006-02-15 Voith Paper Patent Gmbh Unterdruck-bandförderer
US6513263B2 (en) * 2000-10-06 2003-02-04 Enerquin Air Inc. Ventilator for offset pocket and method of ventilating the same
DE102005057426A1 (de) * 2005-11-30 2007-05-31 Andritz Küsters GmbH & Co. KG Unterdruck-Bandfördervorrichtung zum Führen einer laufenden Bahn
US8042807B2 (en) * 2006-12-21 2011-10-25 Palo Alto Research Center Incorporated Transport for printing systems
DE102009056625B9 (de) * 2009-12-02 2011-05-12 Paprima Industries Inc., Dorval Verlängerungseinrichtung für einen Luftleitkasten
DE102010056576B8 (de) 2010-12-30 2015-05-07 Paprima Industries Inc. Papierherstellungsmaschine und Verfahren zum Herstellen von Papier
DE102015001008A1 (de) * 2015-01-28 2016-07-28 Andritz Küsters Gmbh Verfahren und Vorrichtung zur Herstellung von nassgelegten Vliesstoffen
DE102022123265A1 (de) * 2022-09-13 2024-03-14 Voith Patent Gmbh Anlage zur Herstellung einer Faserstoffbahn

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504820A1 (de) 1984-03-02 1985-09-12 Valmet Oy, Helsinki Vorrichtung in der trockenpartie einer papiermaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI76142C (fi) * 1985-11-14 1988-09-09 Valmet Oy Fickventilationsfoerfarande och -anordning i en pappersmaskins maongcylindertork.
US4698919A (en) * 1986-04-08 1987-10-13 Beloit Corp. Apparatus for assisting the transfer of a web to a drying section
EP0302051B1 (fr) * 1986-04-08 1990-02-07 Beloit Corporation Boite de soufflage pour un secheur
US5507104A (en) * 1987-02-13 1996-04-16 Beloit Technologies, Inc. Web drying apparatus
DE3706541A1 (de) * 1987-02-28 1988-09-08 Voith Gmbh J M Vorrichtung zum stabilisieren des laufes einer warenbahn, insbesondere zum stabilisieren einer papierbahn in der trockenpartie einer papiermaschine
DE3739338C2 (de) * 1987-11-20 1995-09-07 Voith Gmbh J M Luftleitkasten zum Stabilisieren des Laufs einer Warenbahn, insbesondere einer Papierbahn
FI82502C (fi) * 1989-05-02 1991-03-11 Valmet Paper Machinery Inc Foerfarande och anordning i torkpartiet av en pappersmaskin foer att effektivera spetsdragningen av banan.
FI95732C (fi) * 1992-01-13 1996-03-11 Valmet Paperikoneet Oy Laite paperikoneen kuivatusosassa

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504820A1 (de) 1984-03-02 1985-09-12 Valmet Oy, Helsinki Vorrichtung in der trockenpartie einer papiermaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017123189A1 (de) 2017-10-06 2019-04-11 Voith Patent Gmbh Bahnführungsvorrichtung zum Stabilisieren einer flächigen Materialbahn, Trockenpartie einer Bahnführungsvorrichtung und Verfahren zum Betreiben einer Bahnführungsvorrichtung zum Stabilisieren einer flächigen Materialbahn in einer Trockenpartie

Also Published As

Publication number Publication date
US5893505A (en) 1999-04-13
CA2195142A1 (fr) 1997-07-21
CN1158816A (zh) 1997-09-10
DE19601989C2 (de) 2002-01-31
DE19601989A1 (de) 1997-07-24
EP0785306A3 (fr) 1998-09-09
EP0785306B1 (fr) 2002-05-02
DE59609152D1 (de) 2002-06-06

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