EP0839745A2 - Dispositif pour guider une bande de papier sur un ruban - Google Patents

Dispositif pour guider une bande de papier sur un ruban Download PDF

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Publication number
EP0839745A2
EP0839745A2 EP97115572A EP97115572A EP0839745A2 EP 0839745 A2 EP0839745 A2 EP 0839745A2 EP 97115572 A EP97115572 A EP 97115572A EP 97115572 A EP97115572 A EP 97115572A EP 0839745 A2 EP0839745 A2 EP 0839745A2
Authority
EP
European Patent Office
Prior art keywords
paper web
air
web
belt
guiding surfaces
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
EP97115572A
Other languages
German (de)
English (en)
Other versions
EP0839745A3 (fr
EP0839745B1 (fr
Inventor
Hans Loser
Karl Dr. Steiner
Joachim Henssler
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
Voith Sulzer Papiertechnik 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 Sulzer Papiermaschinen GmbH, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0839745A2 publication Critical patent/EP0839745A2/fr
Publication of EP0839745A3 publication Critical patent/EP0839745A3/fr
Application granted granted Critical
Publication of EP0839745B1 publication Critical patent/EP0839745B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/10—Advancing webs by a feed band against which web is held by fluid pressure, e.g. suction or air blast

Definitions

  • the invention relates to a device for guiding a paper web on a belt, in particular on a felt belt.
  • the paper web is guided on a variety of belts during paper production, starting on a wire in the wire section, later on felt or smooth belts in the press section and finally on a drying wire in the dryer section.
  • the invention is therefore based on the object of providing a device for guiding a paper web on a belt, by means of which the tendency to flutter at the edge regions is reduced.
  • This object is achieved by arranging first air guiding surfaces which are arranged on the side of the paper web in such a way that the air entrained by the paper web between the air guiding surfaces and the paper web creates a dynamic pressure for pressing the paper web onto the belt.
  • the air entrained by the paper web is used in this way to press the paper web against the belt, so that the tendency to flutter is reduced.
  • the device according to the invention is particularly simple and does not require any additional energy. Wherever edge flutter must be expected in the paper machine, air guiding surfaces can be provided in a suitable manner in order to reduce the tendency to flutter.
  • the air guide surfaces extend obliquely towards the paper web as seen in the direction of web travel and obliquely outwards towards the edges of the belt.
  • the air guiding surfaces preferably cover the edges of the paper web.
  • second air guiding surfaces are arranged on the side of the belt facing away from the paper web for deflecting air entrained by the belt to the outside in such a way that a vacuum is created for sucking the paper web onto the belt.
  • the second air guiding surfaces viewed in the direction of web travel, can extend obliquely outwards from the belt and preferably obliquely towards the edges of the belt.
  • third air guiding surfaces are arranged on the paper web side, which extend outwards from the paper web in the direction of web travel.
  • a suction is directed outwards from the paper web, by which the transfer of a transfer strip to the downstream unit is supported or by which the edges of the paper web are supported during the transfer to the downstream unit.
  • the air guiding surfaces are designed as curved surfaces.
  • the band 12 can be designed as a felt band.
  • a device 10 which comprises air guiding surfaces 16, 18.
  • the air guiding surfaces 16, 18 are designed as approximately square sheets, which are arranged above the paper web 14 in such a way that the surfaces are inclined towards the paper web 14 and at the same time are rotated obliquely outwards in the direction of the edges 17 of the band 12, so that overall, an air flow directed towards the paper web 14 over the edge of the paper web 14 in the direction of the edge 17 of the band 12 results, which is indicated in FIGS. 1 and 2 by the arrows 20, 22.
  • This dynamic pressure significantly reduces the tendency of the paper web 14 to flutter in its edge regions, since the paper web 14 is pressed against the belt 12 by the dynamic pressure and at the same time the air is deflected obliquely outwards at the edges 15 of the paper web.
  • the right air guide surface 16 is drawn larger in FIG. 1 than the left air guide surface 18 and is arranged such that the air guide surface 16 covers both the edge of the paper web 15 and the edge 17 of the band 12.
  • a modification of the device according to the invention is designated by the number 10a.
  • the air guiding surfaces 18a are not designed as flat, but as curved surfaces, the curvature being designed such that, in turn, a dynamic pressure directed towards the paper web 14 results, which is shown in FIG the arrows 20a is indicated.
  • the air guiding surfaces 18a are slanted outwards, as was explained previously with reference to FIGS. 1 and 2.
  • the curvatures of the air-guiding surfaces 18a can be optimally adjusted in terms of flow technology, so that overall there is a higher dynamic pressure than in the previously described embodiment, so that overall the tendency of the paper web 14 to flutter at its edges 15 is reduced even more.
  • the device 10b according to the invention here comprises second air guiding surfaces 26 on the side of the belt 12, which are oriented in such a way that an air flow directed obliquely outwards from the belt 12 results in the web running direction 24 behind the second air guiding surfaces 26 there is a suction effect, through which the paper web 14 is additionally sucked onto the belt 12.
  • the air guiding surfaces 26 can in turn be slanted outwards so that the entrained air flow is again deflected outwards.
  • FIG. 5 Another variant of the device according to the invention is shown in FIG. 5 and is designated overall by the number 10c.
  • first air guide surfaces 18 and the second air guide surfaces 26 which are arranged alternately in FIG. 5, while according to FIG. 4 the first air guide surfaces 18 and the second air guide surfaces 26 are arranged opposite one another on the paper web side and on the felt side are.
  • FIG. 6 A further modification of the device according to the invention is shown in FIG. 6 and is designated overall by the number 10d.
  • third air guiding surfaces 28 are arranged on the paper web side, which deflect the air entrained by the paper web 14 diagonally away from the paper web 14, so that a suction effect occurs which increases the tendency of the paper web 14 to lift off the belt 12.
  • This arrangement is used to support the transfer of a transfer strip to a downstream unit, which is shown schematically in FIG. 6 as a suction roll 30, over which a belt 32 is guided.
  • FIG. 6 is of a purely schematic nature and that the suction roller 30 can generally be moved up to the paper web 14 so that the transfer strip can then be transferred, which is additionally caused by the third air guide surfaces 28 generated suction is supported.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Advancing Webs (AREA)
  • Paper (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Replacement Of Web Rolls (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
EP97115572A 1996-10-30 1997-09-09 Dispositif pour guider une bande de papier sur un ruban Expired - Lifetime EP0839745B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19643814 1996-10-30
DE19643814A DE19643814A1 (de) 1996-10-30 1996-10-30 Vorrichtung zur Führung einer Papierbahn auf einem Band

Publications (3)

Publication Number Publication Date
EP0839745A2 true EP0839745A2 (fr) 1998-05-06
EP0839745A3 EP0839745A3 (fr) 1998-12-09
EP0839745B1 EP0839745B1 (fr) 2000-04-05

Family

ID=7809608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97115572A Expired - Lifetime EP0839745B1 (fr) 1996-10-30 1997-09-09 Dispositif pour guider une bande de papier sur un ruban

Country Status (4)

Country Link
US (1) US6010128A (fr)
EP (1) EP0839745B1 (fr)
AT (1) ATE191427T1 (fr)
DE (2) DE19643814A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6290817B1 (en) 1998-09-29 2001-09-18 Valmet Corporation Device for conveying and guiding a lead-in strip of a web in a paper machine
DE10050848A1 (de) * 2000-10-13 2002-04-18 Voith Paper Patent Gmbh Bahnstabilisierung

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19601256C1 (de) * 1996-01-16 1997-04-10 Aeg Electrocom Gmbh Vorrichtung zum Führen bewegter Sendungen
US6286655B1 (en) * 1999-04-29 2001-09-11 Advanced Sorting Technologies, Llc Inclined conveyor
US20030131943A1 (en) * 2002-01-17 2003-07-17 Frederisy Douglas R. Apparatus and method for assembling absorbent garments
FI116229B (fi) * 2004-04-29 2005-10-14 Metso Paper Inc Sivuohjauksella varustettu alipainehihnakuljetin rainanmuodostuskonetta varten
US7080962B1 (en) * 2005-05-31 2006-07-25 Kimberly-Clark Worldwide, Inc. Air conveyance apparatus
SE537870C2 (sv) * 2013-04-29 2015-11-03 Stora Enso Oyj Anordning för att hindra en pappersbana från att lyfta frånen vira

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2602606A1 (de) * 1976-01-24 1977-07-28 Schloemann Siemag Ag Vorrichtung zum fuehren eines bandanfangs von einem auf einem haspel aufgenommenen bandwickel bis zu den einlaufrollen eines walzwerks
DE3524006A1 (de) * 1984-07-05 1986-02-06 Valmet Oy, Helsinki Vorrichtung in einer papiermaschine zum transport und zur fuehrung des bahnendauffuehrungsbandes
WO1997038163A1 (fr) * 1996-04-06 1997-10-16 Voith Sulzer Papiermaschinen Gesellschaft Mbh Procede et dispositif pour stabiliser une bande de papier dans une machine a papier, dans la zone d'un rouleau

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI65461C (fi) * 1982-11-03 1984-05-10 Valmet Oy Foerfarande och anordning i torkpartiet i en pappersmaskin foer stabilisering av pappersbanans foerlopp
US4551203A (en) * 1984-04-02 1985-11-05 Valmet Oy Method and arrangement for guiding a paper web from the press section to the drying section
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
US5183251A (en) * 1988-10-13 1993-02-02 Sardella Louis M Conveyor system and feeding sheets
US5022166A (en) * 1990-06-07 1991-06-11 Union Camp Corporation Flutter suppression air foils
US5046712A (en) * 1990-09-10 1991-09-10 Ark, Inc. Apparatus for handling workpieces of limp sheet material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2602606A1 (de) * 1976-01-24 1977-07-28 Schloemann Siemag Ag Vorrichtung zum fuehren eines bandanfangs von einem auf einem haspel aufgenommenen bandwickel bis zu den einlaufrollen eines walzwerks
DE3524006A1 (de) * 1984-07-05 1986-02-06 Valmet Oy, Helsinki Vorrichtung in einer papiermaschine zum transport und zur fuehrung des bahnendauffuehrungsbandes
WO1997038163A1 (fr) * 1996-04-06 1997-10-16 Voith Sulzer Papiermaschinen Gesellschaft Mbh Procede et dispositif pour stabiliser une bande de papier dans une machine a papier, dans la zone d'un rouleau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6290817B1 (en) 1998-09-29 2001-09-18 Valmet Corporation Device for conveying and guiding a lead-in strip of a web in a paper machine
DE10050848A1 (de) * 2000-10-13 2002-04-18 Voith Paper Patent Gmbh Bahnstabilisierung

Also Published As

Publication number Publication date
EP0839745A3 (fr) 1998-12-09
DE19643814A1 (de) 1998-05-07
EP0839745B1 (fr) 2000-04-05
US6010128A (en) 2000-01-04
ATE191427T1 (de) 2000-04-15
DE59701395D1 (de) 2000-05-11

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