EP2138632A1 - Dispositif et procédé destinés au transfert d'une bande de matériau - Google Patents

Dispositif et procédé destinés au transfert d'une bande de matériau Download PDF

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Publication number
EP2138632A1
EP2138632A1 EP09007522A EP09007522A EP2138632A1 EP 2138632 A1 EP2138632 A1 EP 2138632A1 EP 09007522 A EP09007522 A EP 09007522A EP 09007522 A EP09007522 A EP 09007522A EP 2138632 A1 EP2138632 A1 EP 2138632A1
Authority
EP
European Patent Office
Prior art keywords
zone
material web
sub
negative pressure
web
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
EP09007522A
Other languages
German (de)
English (en)
Other versions
EP2138632B1 (fr
Inventor
Klaus Gissing
Roland Schick
Michael Janosch
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.)
Andritz AG
Original Assignee
Andritz AG
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 Andritz AG filed Critical Andritz AG
Publication of EP2138632A1 publication Critical patent/EP2138632A1/fr
Application granted granted Critical
Publication of EP2138632B1 publication Critical patent/EP2138632B1/fr
Active 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
    • 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
    • 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

Definitions

  • the subject of this invention is a device for transferring a material web, in particular paper, cardboard, tissue or another fibrous web.
  • a removal zone for removing the material web from the first support surface and a stabilization zone for stabilizing the material web are arranged in front of the subsequent support surface, wherein the acceptance zone is limited by sealing means and the stabilization zone is bounded by a seal device and a seal and the subsequent support surface.
  • the removal zone and the stabilization zone can be acted upon by a vacuum source of their own in each case.
  • the subject of this invention also forms a method for transferring a material web, which is carried out with the device according to the invention.
  • Such web transfer devices are used, for example, in the dryer section of paper machines. These drying sections usually consist of a number of drying cylinders and suction rolls, which are each arranged in a row.
  • the web to be dried runs meandering supported by an air-permeable support belt from a first drying cylinder to a suction roll and then back to another drying cylinder.
  • the web must be transferred in the areas between the drying cylinders and the suction rolls. This transfer is done with special railway transfer facilities. That's how it describes EP 1 788 153 A2 a railroad transfer box having a take-off zone and a stabilization zone.
  • the web and the support belt are removed by means of vacuum from the drying cylinder and in the directly following stabilization zone, the web and the support belt are stabilized by means of negative pressure before they are passed to the suction roll.
  • the two negative pressures in the decay zone and the stabilization zone are separately adjustable and adjustable. It is among other things from the above EP 1 788 153 A2 known that in the stabilization zone a marginal strip transfer area by an air knife can be demarcated. This has the advantage that in the case of a strip transfer, the transfer vacuum in the strip transfer area can be raised. However, this subdivision concerns only the stabilization zone.
  • the DE 43 14 475 A1 discloses a suction box for transferring a fibrous web to be dried, wherein the deflecting roller and the suction box have at one end a portion which can be separately evacuated to transfer a threading strip.
  • the DE 10 2006 014 469 A1 discloses a method and apparatus for transferring a fibrous web by means of a suction box. This sow box can also have a high vacuum zone, which supports the detachment of the fibrous web from the lateral surface.
  • the invention is therefore based on the object to provide a web transfer device and a transfer method, by which an improved overpass during threading of a transfer strip and the spreading is possible.
  • the take-off zone is subdivided transversely to the material web running direction into at least two take-off sub-zones, wherein the negative pressure can be switched on separately in at least one take-off sub-zone.
  • the removal zone is preferably subdivided into 3 to 8 or into 4 to 6 removal sub-zones.
  • a flap for negative pressure connection is provided in at least one connecting channel, which connects a removal sub-zone with a vacuum source.
  • a flap allows a quick connection of the respective acceptance sub-zone.
  • the setting of the individual negative pressure can be done via an adjustment flap, which is also arranged in a connecting channel.
  • adjustment flaps have a simple and inexpensive construction and can be easily replaced in case of disturbances.
  • the arrangement in the connecting channel simplifies the accessibility of the adjustment flap and its control.
  • the individual removal sub-zones are connected to the same vacuum source, as this is less expensive.
  • the negative pressures of the individual take-off sub-zones with a plurality of vacuum sources, which can be dimensioned smaller thereby, are applied.
  • the invention also provides a corresponding method for transferring a material web in which transverse to the web direction of travel arranged Abdgingteilzonen in the take-off zone are separated from each other subjected to negative pressure.
  • the acceptance zone can be optimally adapted to the current material web width.
  • the underpressures in the take-off zones can be adjusted or regulated separately from one another. This can be achieved that the material web is removed at the tangent point of a first support surface.
  • the removal sub-zones are separated from each other subjected to negative pressure during broad travel of the material web.
  • a pressure adjustment of the individual removal sub-zones during spreading for a sufficient vacuum level is advantageous.
  • FIG. 1 the railway transfer device according to the invention is shown. It may include a take-off box 5 and a stabilization box 7, but it is also conceivable that this is a single track transfer box.
  • the material web 1 coming from the right is supported by a support belt 2 and guided over a first support surface 3, which is a rotating and heated drying cylinder in the present example. Thereafter, the web 1 and the support band 2 is removed in the acceptance zone 6 of the first support surface 3.
  • the removal zone 6 is subjected to negative pressure, thereby the material web 1 and the support band 2 is sucked away from the first support surface 3.
  • the take-off zone 6 is sealed by sealing means 10 and 10 'which are transverse to the machine direction.
  • the removal zone 6 is followed by a stabilization zone 8.
  • this stabilization zone 8 the material web 1 and the support band 2 are stabilized by means of a negative pressure.
  • the stabilization zone 8 is separated from the take-off zone by the seal 10 '.
  • a further zone 9 is located between the removal zone 6 and the stabilization zone 8. In this case, this further zone 9 is limited by the sealing device 10 'and the seal 14 transversely to the material web running direction 19.
  • This additional zone 9 does not necessarily have to be subjected to negative pressure, it may also be in communication with the machine environment and indicate ambient pressure. In the presence of the other zone 9, the stabilization zone is sealed by the seal 14 transversely to the machine direction 19.
  • FIG. 2 shows the web transfer device in a schematic view from above.
  • the same reference numerals of all figures indicate the same components.
  • the take-off zone 6 is divided into three removal sub-zones 11, 12, 13, the first removal sub-zone 11 is made narrower than the second removal sub-zone 12.
  • the third acceptance sub-zone 13 is wider than the second acceptance sub-zone 12.
  • the subdivision into 3 acceptance sub-zones is only an example representation, it is also a subdivision of the acceptance zone in 2, 4 or more sub-zones conceivable.
  • the removal sub-zones 11, 12, 13 can either be all the same width or, as shown in the example, have different widths.
  • the removal zone 6 and thus also the removal sub-zones 11, 12 and 13 can be aspirated via a vacuum source 17.
  • the flow direction of the extracted air is schematically represented by the flow direction arrows 20.
  • the removal sub-zones are each connected via a connecting channel 18 with a suction tube 24 through which a vacuum is applied via the vacuum source 17 and through which the air is sucked out of the individual removal sub-zones 11, 12 and 13.
  • the negative pressure in the individual removal sub-zones 11, 12 and 13 can be switched on via the flap 16 and can be adjusted or regulated via adjustment flaps 15.
  • the flaps 16 and the adjustment flaps 15 are arranged in the connecting channel 18.
  • FIG. 3 the web transfer device according to the invention during the threading of a transfer strip or during the spreading of the web 1 is shown.
  • a narrow strip (transfer strip) of the material web 1 is first transferred through the web transfer device.
  • This narrow strip of material web 1 is limited by the material web edges a and b.
  • the flaps 16 of the second removal sub-zone 12 and the third removal sub-zone 13 are closed.
  • the first removal sub-zone 11 is acted upon by the vacuum source 17 with negative pressure.
  • the web 1 can be driven wide.
  • the web width continuously increases until it reaches the final width, this is represented by the web edges a and d.
  • the Materialbahrirand c shows the material web 1 during the Breitfahrens.
  • the removal sub-zones (12, 13) are subjected to negative pressure, which are swept by the web 1. Accordingly, when starting the spreading, the flap 16 of the second removal sub-zone 12 is opened, whereby this zone is subjected to negative pressure. This can ensure that the part of the material web 1, which passes over the second removal sub-zone 12, is reliably removed from the first support surface 3. As long as the material web 1 only passes over the first and second removal sub-zones 11 and 12, the flap 16 of the third removal sub-zone 13 remains closed. Only when the material web is wide enough and thus also sweeps over the third removal sub-zone 13, this zone is subjected to negative pressure. Thus, only those take-off sub-zones 11, 12, 13 are always subjected to negative pressure, in which a negative pressure for material web removal is actually required.
  • the flaps 16 can be provided with an automatic control that opens or closes the flaps depending on the material web width.
  • FIG. 4 is a schematic view of another web transfer device according to the invention shown.
  • the stabilization zone 8 is subdivided into a plurality of stabilization sub-zones 21, 22 and 23. These stabilization sub-zones are adjustable via adjustment flaps 15 ', preferably separately controllable.
  • the second stabilization zone 22 and the third stabilization zone 23 can be acted upon by the flaps 16 'with negative pressure from the further vacuum source 17'.
  • the connection of the stabilization sub-zones 22, 23 via the flaps 16 ' works analogously during broad travel as the connection of the flaps 16 of the acceptance sub-zones 12 and 13.
  • the removal zone 6 and the stabilization zone 8 are separated by a further zone 9. This further zone 9 is separated by the sealing device 10 'and by the seal 14 from the removal zone 6 and from the stabilization zone 8, respectively.
  • the removal zone 6 and the stabilization zone 8 can also adjoin one another directly.
  • the embodiments illustrated in the drawings represent only a preferred embodiment of the invention.
  • the invention also includes other embodiments in which, for example, the removal zone 6 or the stabilization zone 8 is subdivided into more than three subregions. It is also conceivable that the stabilization zone 8 is subdivided into other stabilization sub-zones 21, 22, 23 than the take-off zone. As well as the acceptance sub-zones and the stabilization sub-zones can be switched separately or regulated separately.

Landscapes

  • Advancing Webs (AREA)
  • Replacement Of Web Rolls (AREA)
EP09007522.7A 2008-06-17 2009-06-08 Dispositif et procédé destinés au transfert d'une bande de matériau Active EP2138632B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0096208A AT506408B1 (de) 2008-06-17 2008-06-17 Vorrichtung und verfahren zur überführung einer materialbahn

Publications (2)

Publication Number Publication Date
EP2138632A1 true EP2138632A1 (fr) 2009-12-30
EP2138632B1 EP2138632B1 (fr) 2015-04-01

Family

ID=41037673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09007522.7A Active EP2138632B1 (fr) 2008-06-17 2009-06-08 Dispositif et procédé destinés au transfert d'une bande de matériau

Country Status (5)

Country Link
US (1) US20090308556A1 (fr)
EP (1) EP2138632B1 (fr)
CN (1) CN101607646A (fr)
AT (1) AT506408B1 (fr)
RU (1) RU2496704C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3702164B1 (fr) * 2019-03-01 2022-02-23 Ricoh Company, Ltd. Appareil, unité d'entrée d'air et appareil de sortie de liquide

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314475A1 (de) 1993-05-03 1993-12-23 Voith Gmbh J M Anordnung zum Führen einer zu trocknenden Bahn
EP1193343A2 (fr) 1996-01-30 2002-04-03 Voith Paper Patent GmbH Dispositif pour guider une bande fibreuse dans une section de séchage à une rangée
EP1788153A2 (fr) 2005-11-19 2007-05-23 Voith Patent GmbH Dispositif pour le traitement d'une bande de matériau
DE102006014469A1 (de) 2006-03-29 2007-10-04 Voith Patent Gmbh Überführverfahren

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU827664A1 (ru) * 1979-06-14 1981-05-07 Центральный Научно-Исследовательскийи Проектно-Конструкторский Институтпо Проектированию Оборудования Дляцеллюлозно-Бумажной Промышленности Устройство дл сушки рулонныхМАТЕРиАлОВ
US4359828A (en) * 1979-11-05 1982-11-23 Weyerhaeuser Company Vacuum box for use in high speed papermaking
FI59637C (fi) * 1979-11-20 1981-09-10 Valmet Oy Anordning i torkpartiet av en pappersmaskin
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.
DE4141296A1 (de) * 1991-12-14 1993-06-17 Voith Gmbh J M Vorrichtung zur abnahme einer bahn von einem trockenzylinder
US5600897A (en) * 1993-08-06 1997-02-11 J.M. Voith Gmbh Mixed dryer section including single-tier and double-tier drying groups with automatic ropeless threading
US5515619A (en) * 1993-08-06 1996-05-14 J.M. Voith Gmbh Flexibly mounted sealing strips of a vacuum roll for a web dryer
DE29506620U1 (de) * 1995-04-19 1995-06-08 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Saugwalze
US6192597B1 (en) * 1997-04-17 2001-02-27 Voith Sulzer Papiermaschinen Gmbh Device for treating a fibrous pulp web as well as a sealing device for a device of this kind
FI110625B (fi) * 1999-02-22 2003-02-28 Metso Paper Inc Puhalluslaite paperikoneessa tai vastaavassa
DE10140800A1 (de) * 2001-08-20 2003-03-06 Voith Paper Patent Gmbh Vorrichtung zur Behandlung einer Faserstoffbahn
JP3723158B2 (ja) * 2002-05-30 2005-12-07 三菱重工業株式会社 ドライヤ真空ボックス

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314475A1 (de) 1993-05-03 1993-12-23 Voith Gmbh J M Anordnung zum Führen einer zu trocknenden Bahn
EP1193343A2 (fr) 1996-01-30 2002-04-03 Voith Paper Patent GmbH Dispositif pour guider une bande fibreuse dans une section de séchage à une rangée
EP1788153A2 (fr) 2005-11-19 2007-05-23 Voith Patent GmbH Dispositif pour le traitement d'une bande de matériau
DE102006014469A1 (de) 2006-03-29 2007-10-04 Voith Patent Gmbh Überführverfahren

Also Published As

Publication number Publication date
US20090308556A1 (en) 2009-12-17
AT506408A4 (de) 2009-09-15
EP2138632B1 (fr) 2015-04-01
RU2496704C2 (ru) 2013-10-27
AT506408B1 (de) 2009-09-15
CN101607646A (zh) 2009-12-23
RU2009122358A (ru) 2010-12-20

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