EP0887462A2 - Machine pour la fabrication d'une bande de matériau - Google Patents

Machine pour la fabrication d'une bande de matériau Download PDF

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Publication number
EP0887462A2
EP0887462A2 EP98108842A EP98108842A EP0887462A2 EP 0887462 A2 EP0887462 A2 EP 0887462A2 EP 98108842 A EP98108842 A EP 98108842A EP 98108842 A EP98108842 A EP 98108842A EP 0887462 A2 EP0887462 A2 EP 0887462A2
Authority
EP
European Patent Office
Prior art keywords
material web
web
scraper
drying cylinder
drying
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
EP98108842A
Other languages
German (de)
English (en)
Other versions
EP0887462B1 (fr
EP0887462A3 (fr
Inventor
Werner Goebel
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 Paper 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 Paper Patent GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0887462A2 publication Critical patent/EP0887462A2/fr
Publication of EP0887462A3 publication Critical patent/EP0887462A3/fr
Application granted granted Critical
Publication of EP0887462B1 publication Critical patent/EP0887462B1/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
    • 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
    • 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 a machine for manufacturing a material web, especially paper or Cardboard web, according to the preamble of claim 1.
  • Machines of the type mentioned here are known (EP 0 479 748 B1). They include a dryer section, which has a two-tier dryer group.
  • the Drying group includes several, on top and one a lower row of drying cylinders, around the one material web, together with one Conveyor belt is guided. In the area between the The material web becomes a drying cylinder row in one led free train, that is, the material web is not supported by a conveyor belt.
  • a known machine also includes one of the flyover a threading strip, also known as a ribbon serving nozzle device, the Gas flow against the direction of travel of the material web passed.
  • a nozzle device in the known machine used in the area of the opening nip a drying cylinder, that is, arranged in the outlet area and is the web of material from the drying cylinder decreases, so that this at the -in the direction seen the material web- following Drying cylinders of the other row are transferred can. It turned out to be disadvantageous that the transfer of the threading strip is not in in all cases safely, so that a threading process frequently canceled and cleaning the Drying section must be carried out, resulting in a Machine can come to a standstill.
  • a machine is proposed the features mentioned in claim 1 having. This is indicated by an that opposite the first nozzle device Guide device arranged on the material web side, which comprises at least one second nozzle device, whose gas flow essentially in the direction of Material web runs. The opposite of the running direction the material flow directed gas stream the first Nozzle device prevents the material web sticks to a drying cylinder and is wound on this.
  • the leadership facility guides and stabilizes the threading strip, being by in the direction of the web of material directed gas flow of the second nozzle device the threading strip is worn and therefore securely on those following in the direction of travel of the material web Drying cylinder of the other drying cylinder series can be transferred. Through the exclusively directed in the direction of travel of the material web Gas flow of the second nozzle device can continue to twist the threading strip can be prevented safely.
  • An embodiment of the machine is preferred, which is characterized in that the first Nozzle device is attached to a scraper, and that the surface facing the material web of the scraper and that facing the material web Surface of the guide device essentially run parallel to each other.
  • the scraper and the Management facility limit an even Gap through which the web of material passes becomes. The material web is therefore on both sides performed so that this in the desired manner on the subsequent drying cylinders are placed can.
  • an embodiment of the machine preferred in which a cutting device is provided is for tearing off a threading strip from the web of material. It is provided that the cutting device on at least one essentially across the width of the material web extending crossbar is arranged.
  • the functional reliability the cutting device can in particular can be increased in that the traverse -in Direction of travel of the material web seen - aligned is arranged behind the scraper. This covers the Traverse in such a way that a deposit of material web scraps that when transferring the material web fall off from this, can be safely prevented. It also ensures that the cutting device concealed behind the traverse when threading is arranged so that it is a threading process not prevented. By arranging the Cutting device immediately behind the scraper can finally be a particularly compact design of the machine.
  • the machine described below is general can be used for the production of material webs.
  • it is assumed that it is a machine for producing a Paper web, i.e. around a paper manufacturing machine, acts.
  • FIG 1 shows schematically a section of a Dryer section 1 of the paper making machine, namely part of a two-tier dryer group 3, which has several drying cylinders, one of which here only the drying cylinders 5 to 15 are shown are.
  • the axes of rotation of the drying cylinders 5, 7, 9 lie in an imaginary first level E1 and that of the drying cylinder 11, 13, 15 in an imaginary second level E2.
  • the dotted lines Levels E1 and E2 run parallel at a distance to each other.
  • the drying cylinders 5, 7, 9 of the top row is also called a dryer or -felt designated conveyor belt 17 assigned to the the drying cylinders 5, 7, 9 of the top row and these associated deflection rollers 19, 21, 23 meandering circulates.
  • Another conveyor belt 25 rotates the drying cylinders 11, 13, 15 of the lower ones Row and associated guide rollers, of which in Figure 1 only the deflection rollers 27 and 29 are shown meandering.
  • Paper web passes through dryer group 3 from left to right (see arrow 33) and will alternately around a drying cylinder of the lower one Row and around a drying cylinder of the top Row led.
  • the Drying cylinders of drying group 3 is in each case a scraper 35 assigned in the discharge area of the Drying cylinder is arranged, that is in the area in which the material web 31 from the drying cylinder expires.
  • the scrapers 35 are identical trained so that in the following only the drying cylinder 11 assigned scraper 35 described becomes.
  • the scraper 35 lies on the surface of the Drying cylinder 11 and prevents a web break committee around the drying cylinder 11 wraps. It also serves as one Ribbon designated threading strip, the edge area the web of material 31 when the papermaking machine starts up from the material web 31 is separated, to the drying cylinder 5 of the upper Convict row.
  • the scraper 35 runs So - depending on its function - over the entire Width of the drying cylinder 11 or only a partial area, who is preferably on the leader's side Machine lies.
  • Nozzle devices 37 and 39 attached.
  • the first Nozzle device 37 comprises a blow pipe from which a gas flow 41 emerges that is essentially counter the running direction of the material web 31 directed is.
  • the nozzle device 39 also has a blowpipe from which a substantially in Direction of the material web 31 directed gas flow 43 exits.
  • the leadership facility 45 is designed as a baffle, the Material web 31 facing and preferably one acute angle with this or the web running direction enclosing surface 53 substantially parallel to that facing the material web 31 Surface 55 of the scraper 35 runs. This makes a more uniform, that is, -in Direction of travel of the material web 31 seen the same wide gap between the scraper 35 and the guide device 45 formed by the web of material 31 with the aid of the nozzle devices 37, 39, 47, 49 is performed safely.
  • the threading strip is between the conveyor belt 17 and the drying cylinder 5 around this led around. This also applies to the drying cylinders 5, 7, 9 the top row is the conveyor belt 17 each lifted from a drying cylinder and onto the transferred to the next drying cylinder in the same row, So here first from the drying cylinder 5 the drying cylinder 7.
  • the deflecting rollers 19, 21, 23, 27, 29 of the drying group 3 are arranged symmetrically, that is, the axes of rotation of the deflection rollers 27, 29 of the lower Dryer cylinder rows are each in an imaginary arranged vertically in the plane also an axis of rotation of a drying cylinder the top row, here the drying cylinder 5 or drying cylinder 7. Furthermore the axes of rotation assigned to the top row Deflection rollers 19, 21, 23 each in an imaginary, arranged vertically, in the same plane an axis of rotation of a drying cylinder of the lower one Row lies.
  • the scraper 35 and the guide device 45 also within a dryer group are used, the deflection rollers have an asymmetrical arrangement, which are offset to the drying cylinders.
  • a scraper 35 is assigned to dryer group 3, the both as a known cleaning scraper or can be designed as a transfer scraper.
  • the scraper 35 is preferably as transfer scraper because it is a more compact Has construction as a cleaning scraper and in particular is shorter.
  • blowpipes of the nozzle devices 37, 39, 47, 49 can by means of a control unit, not shown are activated and deactivated individually, what is referred to as driving in the following becomes. It is also possible to use a scraper To control 35 arranged blowpipes together, several blowpipes, for example two to twenty blowguns, or all blowguns inside to control dryer group 3 together.
  • the Blowpipes can also each have a separate air volume adjuster have and / or about each a separate solenoid valve can be controlled. Farther the blowguns can be delayed, so activated and deactivated in succession, preferably depending on the position of the free End of the threading strip within the dryer section, so that to guide and stabilize the amount of air required relative to the threading strip is low.
  • Figure 2 shows schematically a side view of a Part of an embodiment of the drying group 3.
  • the same parts have the same reference numerals provided so that in this respect to the description of Figure 1 is referenced.
  • the deflecting rollers 21 and 29 the upper and the lower row of drying cylinders are arranged asymmetrically here That is, the axis of rotation of the deflecting roller 21 is relative the one in an imaginary, vertical Plane axis of rotation of the drying cylinder 13 offset to the left, as well as the axis of rotation of the Deflection roller 29 compared to that shown in Figure 1 Position is shifted to the left.
  • a limited space 57 also known as a pocket, one for severing a threading strip from the material web 31 serving cutting device 59 and the scraper 35 are arranged.
  • the cutting device 59 is at a cross across the Width of the material web 31 extending traverse 61 arranged and can be moved on this.
  • the traverse 61 becomes - in the running direction of the material web 31 seen - aligned behind the scraper 35 arranged. This completely covers the traverse 61 from, thereby advantageously depositing prevented from material scraps on the crossmember 61 becomes.
  • the cutting device 59 shown here serves to a threading strip when starting the machine for threading the material web into one of the dryer groups subordinate assembly of the manufacturing machine provide. It is therefore preferred arranged at the end of dryer group 3.
  • the dryer group 3 is after commissioning the paper making machine or after one Web break the complete material web 31 in the Drying group 3 to the drying cylinder 13 of the lower one Row led.
  • the material web 31 runs together with the conveyor belt 25 from the drying cylinder 13 from.
  • This places on the scraper 35 attached nozzle device 37 or their Gas flow 41 ensures that the web of material is not adhere to the outer surface of the drying cylinder 13 remains, but together with the conveyor belt 25 expires.
  • the deflecting roller 29 over which the conveyor belt 25 is carried out in the in FIG illustrated embodiment positioned such that the conveyor belt 25 only in the transfer area between the lower and the upper Row of drying cylinders separated from the material web 31 becomes. This shortens the free move, so that overall improved leadership is achieved becomes.
  • the Cutting device 59 In the area of free movement, the Cutting device 59 a threading strip from the Material web 31 cut off around the drying cylinder 7 and on through the rest of the dryer section led and then the subsequent assembly is fed. On the cutting device 59 opposite side of the web here is one Guide device 45 arranged, the first Material web 31 and then the separated one Entry strips and the remaining web securely to the Drying cylinder 7 transferred and stabilized in the process.
  • the Cutting device 59 - seen directly in the direction of web travel another assembly of the manufacturing machine for example a treatment facility downstream, that is, the cutting device 59 is arranged at the end of the dryer section, so that the threading strip respectively the material web after passing the cutting device 59 led out of the dryer section and is transferred to the subsequent assembly.
  • FIG. 3 shows a on a greatly enlarged scale Part of a dryer section 1, namely a drying cylinder 13 and a deflecting roller 29 of a drying group 3 '.
  • Parts that correspond to those in FIGS and 2 match, have the same reference numerals provided so that in this respect on their description with reference to Figures 1 and 2.
  • a scraper 35 'explained in more detail This lies on the scope of the drying cylinder 13 and serves on the one hand one at the start of the paper making machine around the drying cylinder 13 threading strips on the guide roller 29 and on Direction of a drying cylinder, not shown respectively.
  • the scraper 35 ' a winding of material scraps and scrap after a train ride.
  • the first nozzle device 37 '- seen in the direction of travel of the material web 31 - is the foremost nozzle device and comprises one blow pipe having at least one single nozzle, from which a gas flow indicated by an arrow 41 exits.
  • a wedge-shaped cover can be assigned to the individual nozzle that shields the gas stream 41 or conducts, so that this exactly at the desired location on the drying cylinder.
  • the gas flow 41 is opposite to the running direction the material web 31 directed and includes the surface 55 facing the material web 31 of the scraper 35 'an angle ⁇ in the range from -10 ° to 30 °, but preferably in the range of -5 ° to 15 °. With a negative angle denotes a direction of the gas flow 41 which is against the surface 55 of the scraper 35 'directed is.
  • the gas flow 41 hits the surface of the Drying cylinder 13 and peels the threading strip when this is on the surface of the drying cylinder 13 sticks.
  • the subsequent nozzle device viewed in the direction of web travel 63 has a slot nozzle Blower pipe from which a gas stream 65 emerges.
  • the gas stream 65 closes with the surface 55 of the scraper 35 'an angle ⁇ which is in the range is from 140 ° to 180 °, preferably in the range from 155 ° to 175 ° is selected.
  • the gas flow 65 is therefore essentially in the running direction of the material web 31 directed.
  • Through the slot nozzle generates a preferably even gas curtain, so that twisting the web of material, respectively of the threading strip can be safely avoided can.
  • the two nozzle devices 37 'and 63 are preferred arranged next to each other at a very short distance and are in the area of the front, edge of the scraper resting on the drying cylinder 13 35 '.
  • the drying cylinder 13 facing away edge of the scraper 35 ' the nozzle device 39 'is arranged which is a blowpipe from which a gas stream 43 emerges.
  • the Gas stream 43 serves to thread the streak of the lower row of drying cylinders to the upper row of drying cylinders to be transferred and is aligned in such a way that he was at an acute angle the material web 31 strikes.
  • the gas stream 43 closes with an upper side 67 of the scraper 35 ' an angle ⁇ in the range of 90 ° to 150 ° can be and which is preferably an angular range from 100 ° to 130 °.
  • the top 67 of the scraper 35 ' closes here with that of the material web 31 facing surface 55 of the scraper 35 'an angle ⁇ , which is approximately 75 °.
  • the orientation or setting of the Gas flows from the nozzle devices 37, 39, 47, 49, 63 takes place via a blow gun, not shown the clamping device fixing the nozzle devices. This enables a stepless angle adjustment the blowguns.

Landscapes

  • Drying Of Solid Materials (AREA)
  • Paper (AREA)
EP98108842A 1997-06-25 1998-05-15 Machine pour la fabrication d'une bande de matériau Expired - Lifetime EP0887462B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19726895 1997-06-25
DE19726895A DE19726895A1 (de) 1997-06-25 1997-06-25 Maschine zur Herstellung einer Materialbahn

Publications (3)

Publication Number Publication Date
EP0887462A2 true EP0887462A2 (fr) 1998-12-30
EP0887462A3 EP0887462A3 (fr) 1999-05-19
EP0887462B1 EP0887462B1 (fr) 2004-07-28

Family

ID=7833561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98108842A Expired - Lifetime EP0887462B1 (fr) 1997-06-25 1998-05-15 Machine pour la fabrication d'une bande de matériau

Country Status (3)

Country Link
US (1) US6145217A (fr)
EP (1) EP0887462B1 (fr)
DE (2) DE19726895A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1057932A2 (fr) * 1999-05-26 2000-12-06 Voith Sulzer Papiertechnik Patent GmbH Système d'engagement de la pointe du papier avec des sarbacanes pour machines à papier
US6485610B1 (en) 1999-08-12 2002-11-26 Runtech Systems Oy Method and apparatus for the treatment of a material web and for control of the behavior of a material web
EP2508672A1 (fr) * 2011-04-08 2012-10-10 Andritz Küsters GmbH Dispositif destiné au transfert d'un bande dans une station d'une machine de fabrication de bandes ou de traitement
EP2209942B1 (fr) 2007-11-14 2016-05-04 Valmet Technologies, Inc. Porte-lame permettant de détacher une pointe d'engagement de bande d'une surface mobile d'une machine à bande fibreuse

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI121715B (fi) * 2002-07-01 2011-03-15 Metso Paper Inc Menetelmä ja laite rainan päänviennissä paperikoneen tai vastaavan kuivatusosassa
FI115310B (fi) * 2002-12-20 2005-04-15 Metso Paper Inc Paperi- tai kartonkikoneen kaavari
US7748392B2 (en) * 2004-02-17 2010-07-06 Appleton Papers Inc. Edge cleaner device for coating process
FI20060757L (fi) * 2006-08-25 2008-02-26 Runtech Systems Oy Menetelmä ja laite paperirainan tai vastaavan ohjaamiseksi

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5234549A (en) * 1988-09-26 1993-08-10 Weldon Scott B Apparatus for forming a movable threading tail
EP0639668A2 (fr) * 1993-08-06 1995-02-22 J.M. Voith GmbH Section de séchage
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
EP0726355A2 (fr) * 1995-02-09 1996-08-14 Voith Sulzer Papiermaschinen GmbH Procédé et dispositif de transfert d'une bande en papier d'une première à une deuxième station de traitement d'une machine à papier

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5158648A (en) * 1988-09-26 1992-10-27 Weldon Scott B Apparatus for forming a movable threading tail
CA2118307C (fr) * 1993-02-19 1997-03-25 Pekka Eskelinen Methode et dispositif pour assurer le passage de la bande dans le sechoir a tambours multiples d'une machine a papier
SE9400728L (sv) * 1993-03-11 1994-09-12 Voith Gmbh J M Cylindertorkmaskin med två viror
US5515619A (en) * 1993-08-06 1996-05-14 J.M. Voith Gmbh Flexibly mounted sealing strips of a vacuum roll for a web dryer
US5557863A (en) * 1995-04-12 1996-09-24 Valmet Corporation Blow device for a dryer section of a paper machine
DE29601543U1 (de) * 1996-01-30 1996-03-28 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zum Führen einer Faserstoffbahn in einer einreihigen Trockenpartie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5234549A (en) * 1988-09-26 1993-08-10 Weldon Scott B Apparatus for forming a movable threading tail
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
EP0639668A2 (fr) * 1993-08-06 1995-02-22 J.M. Voith GmbH Section de séchage
EP0726355A2 (fr) * 1995-02-09 1996-08-14 Voith Sulzer Papiermaschinen GmbH Procédé et dispositif de transfert d'une bande en papier d'une première à une deuxième station de traitement d'une machine à papier

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1057932A2 (fr) * 1999-05-26 2000-12-06 Voith Sulzer Papiertechnik Patent GmbH Système d'engagement de la pointe du papier avec des sarbacanes pour machines à papier
EP1057932A3 (fr) * 1999-05-26 2001-04-04 Voith Paper Patent GmbH Système d'engagement de la pointe du papier avec des sarbacanes pour machines à papier
US6485610B1 (en) 1999-08-12 2002-11-26 Runtech Systems Oy Method and apparatus for the treatment of a material web and for control of the behavior of a material web
EP2209942B1 (fr) 2007-11-14 2016-05-04 Valmet Technologies, Inc. Porte-lame permettant de détacher une pointe d'engagement de bande d'une surface mobile d'une machine à bande fibreuse
EP2209942B2 (fr) † 2007-11-14 2019-05-22 Valmet Technologies, Inc. Porte-lame permettant de détacher une pointe d'engagement de bande d'une surface mobile d' une machine à bande fibreuse
EP2508672A1 (fr) * 2011-04-08 2012-10-10 Andritz Küsters GmbH Dispositif destiné au transfert d'un bande dans une station d'une machine de fabrication de bandes ou de traitement

Also Published As

Publication number Publication date
US6145217A (en) 2000-11-14
DE59811701D1 (de) 2004-09-02
EP0887462B1 (fr) 2004-07-28
EP0887462A3 (fr) 1999-05-19
DE19726895A1 (de) 1999-01-07

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