EP0726355A2 - Procédé et dispositif de transfert d'une bande en papier d'une première à une deuxième station de traitement d'une machine à papier - Google Patents

Procédé et dispositif de transfert d'une bande en papier d'une première à une deuxième station de traitement d'une machine à papier Download PDF

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Publication number
EP0726355A2
EP0726355A2 EP96101393A EP96101393A EP0726355A2 EP 0726355 A2 EP0726355 A2 EP 0726355A2 EP 96101393 A EP96101393 A EP 96101393A EP 96101393 A EP96101393 A EP 96101393A EP 0726355 A2 EP0726355 A2 EP 0726355A2
Authority
EP
European Patent Office
Prior art keywords
paper web
drying
drying cylinder
web
paper
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
EP96101393A
Other languages
German (de)
English (en)
Other versions
EP0726355A3 (fr
EP0726355B1 (fr
Inventor
Erlfried Atzinger
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
Application filed by Voith Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0726355A2 publication Critical patent/EP0726355A2/fr
Publication of EP0726355A3 publication Critical patent/EP0726355A3/xx
Application granted granted Critical
Publication of EP0726355B1 publication Critical patent/EP0726355B1/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
    • 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

  • Reference (1) shows and describes a dryer section of a paper machine.
  • this dryer section has a single-row cylinder group with a single felt.
  • the felt with the web resting on it runs alternately over drying cylinders and deflection suction rolls.
  • the dryer section has two rows of drying cylinders with two felts.
  • the web runs alternately over the lower and upper cylinders.
  • blower nozzles are used to transfer the web from one drying cylinder to another.
  • the fan nozzles generate air jets which run essentially in the transfer direction of the edge strip.
  • the air jets thus drive the edge strip in the desired direction, namely from a first (upstream) drying cylinder to a second (downstream) drying cylinder in order to transfer the edge strip from the first drying cylinder to the second drying cylinder.
  • Reference (2) also shows and describes the transfer of a narrow edge strip in the dryer section of a paper machine. An air jet is generated here, which is opposite to the direction of travel of the paper web.
  • this reference does not describe a free, i.e. open-chain transfer of the paper strip, but the paper strip adheres to the outer surface of a cylinder and is scraped off by a scraper, the fan air assisting the detachment.
  • the object of the present invention is to provide a method and a device for transferring a paper strip from a first treatment station to a second treatment station, and in particular from a first drying cylinder to a second drying cylinder, in order to permit the transfer with higher reliability and higher speed.
  • FIG. 1 shows a dryer section with one-felt cylinder groups 11-16 and a two-felt cylinder group 17.
  • Fig. 2 is an enlargement of the web transfer area between groups of cylinders.
  • each of these one-felt cylinder groups 11-16 has a single endless felt F.
  • the felt for example, runs alternately together with the web 9 over drying cylinders 51 and deflection rollers 51 ', which are preferably designed as suction rollers.
  • the underside of the web comes into contact with the cylinders. Accordingly, the drying cylinders 51, 52, 54, 56 lie above the associated deflection suction rolls 51 ', 52', 54 'and 56'; the cylinders are "felted on top".
  • the situation is different in the third cylinder group 13 and in the fifth cylinder group 15.
  • the cylinders 53, 55 come into contact with the top of the web; they are therefore "felted below” and lie below the associated deflection suction rolls 53 ', 55'. Consequently, the separating points between the cylinder groups 12 to 16 are designed as so-called reversing separating points. Details of these reversing separation points are described in European patent application P 43 11 351. From Figure 1 it can be seen that the paper web forms a short open path, ie an open train, at each of these turning separation points; ie it is temporarily not supported by a felt. It runs in the area of a small suction zone of a transfer roller 58 onto the next felt in each case. In Fig.
  • these transfer rollers 58 are the only suction rollers with an internal stationary suction box.
  • the deflection suction rolls 51 'to 56' are free of internal stationary installations and of direct suction connections. Instead, an external suction box 59 is provided on each of these deflection suction rolls. This is located in the so-called pocket between two adjacent drying cylinders and has a strip at the point where felt F and web 9 together leave the first of these two cylinders, which strips and deflects the air boundary layer transported by the felt.
  • the last one-felt cylinder group 16 is followed by a two-felt cylinder group 17 with several lower cylinders 57 and several upper cylinders 57 'as well as with a lower felt UF and an upper felt OF.
  • the web 9 runs in a meandering pattern alternately over the lower and upper cylinders.
  • FIG. 2 the transfer area between the last one-felt cylinder group and the first two-felt cylinder group is shown for another dryer section.
  • the last two drying cylinders 73 of the last one-felt cylinder group 23 and the first three cylinders 74, 74 'of the two-felt cylinder group 24 can be seen here.
  • a deflection suction roll 73 'with an internal suction box and in front of the first lower drying cylinder 74 a transverse deflection suction roll 58, which also has a stationary internal suction box, can be seen.
  • An automatic, rope-less deflection device for an edge strip is formed in the one-felt cylinder group 23, for example in such a way that each deflection suction roll 73 has a known edge suction area at one of its two ends. Furthermore, blower air devices, which are symbolically indicated by arrows, and a blower air nozzle 79 are provided on a scraper support body 76. At the point where the web 9 and the felt F together leave the last cylinder 73, an edge suction box R (which is only active in the area of the edge strip), a web stabilization device or the like can be arranged. Or a short "edge strip deflection scraper" 88, which only covers the area of the edge strip and which can also have a blower air nozzle, is arranged on the last cylinder 73.
  • blower nozzles 101, 102, 103, 104 shown in FIG. 2 are absolutely decisive. They serve to transfer an edge strip from the first lower drying cylinder 74 of the two-felt cylinder group 24 to the first upper drying cylinder 74 'thereof.
  • blower nozzles 101, 103 the air jets of which are oriented upwards, ie in the transfer direction
  • blower nozzles 102, 104 whose air jets are oriented downwards and thus in the opposite direction in the transfer direction. It has been found that extremely stable guidance of the edge strip is possible in this way.
  • the air jets of the nozzles 101, 102 produce a conveying effect, by quickly bringing the edge strip up to the drying cylinder 74 '.
  • the air jets from the two blower nozzles 102, 104 ensure that the edge strip assumes a stable position and takes the correct direction to the first upper drying cylinder 74 'immediately after leaving the first lower drying cylinder 74 of the cylinder group 24.
  • the two blower nozzles 101, 102 and the two blower nozzles 103, 104 can be combined in terms of construction and can therefore be carried by a single holder.
  • FIG. 3 shows the transfer area again on a larger scale.
  • the blower nozzles 102, 104 can be seen again.
  • the fan nozzles 101, 103 have been omitted for the sake of an overview of the drawing.
  • the air jet 102.1 from the blower nozzle 102 has a component 102.2 which runs perpendicular to the direction of the edge strip 9 and a component 102.3 which is exactly opposite to the direction of the edge strip 9. Exactly the same applies to the air jets 104.1 from the blower nozzle 104 with the components 104.2 and 104.3.

Landscapes

  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
EP96101393A 1995-02-09 1996-02-01 Procédé de transfert d'une bande en papier d'une première à une deuxième station de traitement d'une machine à papier Expired - Lifetime EP0726355B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38600795A 1995-02-09 1995-02-09
US386007 1995-02-09

Publications (3)

Publication Number Publication Date
EP0726355A2 true EP0726355A2 (fr) 1996-08-14
EP0726355A3 EP0726355A3 (fr) 1996-08-21
EP0726355B1 EP0726355B1 (fr) 2002-06-05

Family

ID=23523767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101393A Expired - Lifetime EP0726355B1 (fr) 1995-02-09 1996-02-01 Procédé de transfert d'une bande en papier d'une première à une deuxième station de traitement d'une machine à papier

Country Status (5)

Country Link
US (1) US5718058A (fr)
EP (1) EP0726355B1 (fr)
CA (1) CA2169208A1 (fr)
DE (1) DE59609272D1 (fr)
FI (1) FI114491B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887462A2 (fr) * 1997-06-25 1998-12-30 Voith Sulzer Papiermaschinen GmbH Machine pour la fabrication d'une bande de matériau

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548303B4 (de) * 1995-12-22 2006-08-31 Voith Paper Patent Gmbh Trockenpartie
FI102197B1 (fi) * 1997-05-27 1998-10-30 Valmet Corp Menetelmä ja laite paperirainan päänviennissä
FI113883B (fi) 1999-08-12 2004-06-30 Runtech Systems Oy Menetelmä ja laitteisto materiaalirainan käsittelemiseksi ja materiaalirainan käyttäytymisen hallitsemiseksi
DE10016492A1 (de) 2000-04-01 2001-10-11 Voith Paper Patent Gmbh Abführvorrichtung
US6513263B2 (en) 2000-10-06 2003-02-04 Enerquin Air Inc. Ventilator for offset pocket and method of ventilating the same
FI20060757L (fi) * 2006-08-25 2008-02-26 Runtech Systems Oy Menetelmä ja laite paperirainan tai vastaavan ohjaamiseksi
DE102015001008A1 (de) * 2015-01-28 2016-07-28 Andritz Küsters Gmbh Verfahren und Vorrichtung zur Herstellung von nassgelegten Vliesstoffen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB137061A (en) * 1917-01-31 1920-06-17 Great Northern Paper Co Improvements in Paper Making Machines.
FR1572200A (fr) * 1968-01-05 1969-06-27
DE4328554A1 (de) * 1993-08-25 1994-03-31 Voith Gmbh J M Trockenpartie
EP0479748B1 (fr) * 1990-10-01 1996-05-29 Valmet Corporation Procédure et disposition dans une section de séchage de machine à papier dans un introducteur de bande de papier

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1595477A (en) * 1920-05-25 1926-08-10 Minton Ogden Method and apparatus for drying sheet material
US1595480A (en) * 1922-01-20 1926-08-10 Minton Ogden Method and apparatus for drying sheet material
US3514372A (en) * 1966-11-29 1970-05-26 Beloit Corp Headbox method and means for blending of multiple jets
AT305754B (de) * 1970-02-18 1973-03-12 Voith Gmbh J M Stoffauflauf für Papiermaschinen
US3843470A (en) * 1970-08-31 1974-10-22 Beloit Corp Flexible trailing elements in a paper-making machine headbox having projections thereon extending into the slurry flow
FI53333C (fi) * 1972-11-13 1978-04-10 Valmet Oy Torkningscylindergrupp i en flercylindertork foer en materialbana i synnerhet foer papper
FI78750B (fi) * 1982-07-20 1989-05-31 Escher Wyss Gmbh Flerskiktsinloppslaoda foer matande av pappersmassa till en vira.
US4945655A (en) * 1987-02-13 1990-08-07 Beloit Corporation Apparatus for cutting a tail from a web
US5101577A (en) * 1987-02-13 1992-04-07 Beloit Corporation Web transfer apparatus
DE3941242A1 (de) * 1989-12-14 1991-06-20 Voith Gmbh J M Fuehrungsplatte zum einfaedeln einer bahn
DE4037661C1 (fr) * 1990-11-27 1991-12-19 J.M. Voith Gmbh, 7920 Heidenheim, De
FI91900C (fi) * 1990-12-17 1994-08-25 Valmet Paper Machinery Inc Menetelmä paperikoneen kuivatusosalla paperin käyristymistaipumuksen vähentämiseksi ja menetelmän toteuttamiseen tarkoitettu kuivatusosa
US5321899A (en) * 1992-04-13 1994-06-21 J. M. Voith Gmbh Dry end
US5269074A (en) * 1992-04-24 1993-12-14 Beloit Technologies, Inc. Single tier dryer section for curl control
DE4321697C2 (de) * 1993-06-30 2002-05-23 Voith Paper Patent Gmbh Turbulenzeinsatz einer Papiermaschine
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
FI103820B (fi) * 1993-11-30 1999-09-30 Valmet Paper Machinery Inc Menetelmät paperirainan kuivatuksessa sekä paperikoneen kuivatusosat
FI100898B (fi) * 1994-03-02 1998-03-13 Valmet Paper Machinery Inc Paperikoneen kuivatusosan yksiviiraviennillä varustettu sylinteriryhmä ja näitä sisältävä paperikoneen kuivatusosa

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB137061A (en) * 1917-01-31 1920-06-17 Great Northern Paper Co Improvements in Paper Making Machines.
FR1572200A (fr) * 1968-01-05 1969-06-27
EP0479748B1 (fr) * 1990-10-01 1996-05-29 Valmet Corporation Procédure et disposition dans une section de séchage de machine à papier dans un introducteur de bande de papier
DE4328554A1 (de) * 1993-08-25 1994-03-31 Voith Gmbh J M Trockenpartie

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887462A2 (fr) * 1997-06-25 1998-12-30 Voith Sulzer Papiermaschinen GmbH Machine pour la fabrication d'une bande de matériau
DE19726895A1 (de) * 1997-06-25 1999-01-07 Voith Sulzer Papiermasch Gmbh Maschine zur Herstellung einer Materialbahn
EP0887462A3 (fr) * 1997-06-25 1999-05-19 Voith Sulzer Papiermaschinen GmbH Machine pour la fabrication d'une bande de matériau

Also Published As

Publication number Publication date
FI114491B (fi) 2004-10-29
FI960559A (fi) 1996-08-10
CA2169208A1 (fr) 1996-08-10
DE59609272D1 (de) 2002-07-11
EP0726355A3 (fr) 1996-08-21
EP0726355B1 (fr) 2002-06-05
US5718058A (en) 1998-02-17
FI960559A0 (fi) 1996-02-07

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