EP0887462B1 - Machine pour la fabrication d'une bande de matériau - Google Patents
Machine pour la fabrication d'une bande de matériau Download PDFInfo
- Publication number
- EP0887462B1 EP0887462B1 EP98108842A EP98108842A EP0887462B1 EP 0887462 B1 EP0887462 B1 EP 0887462B1 EP 98108842 A EP98108842 A EP 98108842A EP 98108842 A EP98108842 A EP 98108842A EP 0887462 B1 EP0887462 B1 EP 0887462B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- material web
- drying cylinder
- nozzle device
- drying
- row
- 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.)
- Expired - Lifetime
Links
Images
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 producing a material web, in particular paper or cardboard web, according to the preamble of the claim 1.
- a machine of this type is, for example, in EP-A-0 726 355.
- Machines of the type mentioned here include a dryer section, the has a two-tier dryer group (see, for example, EP 0 479 748 B1).
- the drying group includes several, on an upper one and a lower row arranged drying cylinders, around which a material web is guided together with a conveyor belt. In the area between the rows of drying cylinders, the material web becomes free Train led, i.e. the material web is not from a conveyor belt supported.
- a known machine also includes one of the flyovers a nozzle device also known as a threading strip, whose gas flow against the direction of travel of a material web runs.
- a machine of the type mentioned in the opening paragraph is in EP-A-0 726 355 described.
- this known machine is only the first drying cylinder a lower one in the lower row of the two-tier dryer group Assigned nozzle device.
- the invention has for its object a machine of the beginning to create the type mentioned, in which the security related the threading of the material web or the threading strip further increased becomes.
- a machine is proposed that the in Features mentioned claim 1. It is characterized by that a respective second nozzle device one on top of the first Arranged opposite material web side nozzle device Guide device is assigned that each drying cylinder lower row of the two-tier dryer group each a first nozzle device is assigned and that on the respective first nozzle device opposite material web side each have a guide device arranged with at least one second nozzle device is.
- a respective first nozzle device prevents the material web sticks to and on the drying cylinder in question is wound up.
- a respective guide device leads and stabilizes the threading strip, whereby through the in the running direction of the material web directed gas flow of a respective second nozzle device of the Threading strips worn and therefore secure to the respective - in the direction of travel seen the material web - subsequent drying cylinder of the another drying cylinder row can be transferred.
- the exclusively gas flow directed in the direction of travel of the material web respective second nozzle device can continue to twist the Threading strip can be prevented safely.
- the first nozzle device is preferably attached to a scraper, through which the material web or the threading strip on the side the first nozzle device is guided.
- the machine In a preferred embodiment of the machine according to the invention run the surface of the scraper facing the material web and the surface of the guide device facing the material web in Essentially parallel to each other.
- the scraper and the guide device therefore limit a uniform gap through which the Material web is passed through.
- the material web is therefore on both Pages led so that these in the desired manner on the following Drying cylinder can be placed.
- Another preferred embodiment is characterized by a Cutting device for separating a threading strip from the material web. It is envisaged that the cutting device on one extending at least substantially across the width of the material web Traverse is arranged.
- the functional reliability of the cutting device can be increased in particular by the fact that the traverse - seen in the direction of the material web - aligned behind the scraper is arranged. This covers the traverse in such a way that it deposits of scraps of material that occur when transferring the material from this fall off, can be safely prevented. It also ensures that the cutting device is hidden behind the traverse when threading is so that it does not prevent threading. Through the Arrangement of the cutting device directly behind the scraper can finally realized a particularly compact design of the machine become.
- 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. a paper making machine, is.
- 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 dashed 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 drain 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 material web 31 when starting the paper making machine 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, preferably on the leader's side Machine lies.
- the first Nozzle device 37 comprises a blow pipe from which a gas stream 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.
- each Guide device 45 On the opposite side of the web with the drying cylinders 11, 13, 15 of the lower ones Row interacting scraper 35 is one each Guide device 45 arranged.
- 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 one 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 designed as 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 blow pipes 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.
- the blowguns can be delayed, so activated and deactivated in succession, preferably depending on the position of the free End of the threading strip inside 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 or the lower row of drying cylinders are arranged asymmetrically here That is, the axis of rotation of the deflection 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.
- From the in a free train from the drying cylinder 5 to the Drying cylinder 13 and from this to the drying cylinder 7 guided material web 31 and the over Deflection roller 21 guided conveyor belt 17 is a also limited as a pocket 57, 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 on 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 transfer process is not with special needs.
- 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 guided 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 thereby stabilized.
- 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 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. in the The following is just the construction of a scraper 35 'explained in more detail. This is on the scope of the drying cylinder 13 and serves on the one hand one when starting up 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. On the other hand, the scraper 35 'prevents a winding up of material scraps and scrap after a web break.
- the scraper 35 ' There are several on the scraper 35 ' here a total of three nozzle devices 37 ', 39 'and 63 attached.
- the first nozzle device 37 ' is seen in the direction of travel of the material web 31.
- the foremost nozzle device and includes a 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 flow 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 Blow 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 'arranged a blow pipe from which a gas stream 43 emerges.
- the Gas flow 43 serves to thread the threading strip from 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 alignment or setting of the Gas flows of 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 stepless angle adjustment the blowguns.
Landscapes
- Drying Of Solid Materials (AREA)
- Paper (AREA)
Claims (9)
- Machine pour la fabrication d'une bande de matériau (31), notamment une bande de papier ou de carton, comprenant une section sèche, qui présente au moins un groupe de séchage à deux rangées (3), qui comprend une rangée supérieure et une rangée inférieure de cylindres de séchage chauffables (5, 7, 9, 11, 13, 15), auxquelles est à chaque fois associée une bande de transport (17, 25), qui tourne en forme de méandres autour des cylindres de séchage (5, 7, 9, 11, 13, 15) d'une rangée et des cylindres de déflection (19, 21, 23, 27, 29) associés aux cylindres de séchage (5, 7, 9, 11, 13, 15), la bande de matériau (31) étant guidée en alternance autour d'un cylindre de séchage (5, 7, 9) de la rangée supérieure et autour d'un cylindre de séchage (11, 13, 15) de la rangée inférieure, et entre les rangées de cylindres de séchage dans une traction libre, avec au moins un premier dispositif de buse (37 ; 37') servant au transport d'un ruban d'enfilage de la bande de matériau (31) d'un cylindre de séchage (11, 13, 15) de la rangée inférieure à un cylindre de séchage (5, 7, 9) de la rangée supérieure, dont le courant gazeux s'étend essentiellement à l'encontre de la direction d'avance de la bande de matériau (31) en vue de décoller le ruban d'enfilage adhérant sur le cylindre de séchage (11, 13, 15) de la rangée inférieure, et avec au moins un deuxième dispositif de buse (47, 49) prévu sur le côté de la bande de matériau opposé au premier dispositif de buse (37 ; 37'), dont le courant gazeux (51) s'étend essentiellement dans la direction d'avance de la bande de matériau (31),
caractérisée en ce qu'
un deuxième dispositif de buse respectif (47, 49) est associé à un dispositif de guidage (45) disposé sur le côté de la bande de matériau opposé au premier dispositif de buse (37 ; 37'), en ce qu'à chaque cylindre de séchage (11, 13, 15) de la rangée inférieure du groupe de séchage à deux rangées (3) est associé à chaque fois un premier dispositif de buse (37 ; 37') et en ce qu'un dispositif de guidage (45) avec au moins un deuxième dispositif de buse (47, 49) est disposé du côté de la bande de matériau opposé à un premier dispositif de buse respectif (37 ; 37'). - Machine selon la revendication 1,
caractérisée en ce que
le premier dispositif de buse (37 ; 37') est monté à chaque fois sur un racloir (35 ; 35'), par lequel la bande de matériau (31) ou le ruban d'enfilage est guidé du côté du premier dispositif de buse (37 ; 37'). - Machine selon la revendication 2,
caractérisée en ce que
la surface (55) du racloir (35 ; 35') tournée vers la bande de matériau (31) et la surface (53) du dispositif de guidage (45) tournée vers la bande de matériau (31) s'étendent essentiellement parallèlement l'une à l'autre. - Machine selon la revendication 2 ou 3,
caractérisée en ce que
le dispositif de guidage (45) est réalisé en tant que tôle directrice. - Machine selon l'une quelconque des revendications 2 à 4,
caractérisée en ce que
la surface (55) du racloir (35 ; 35') tournée vers la bande de matériau (31) s'étend suivant un certain angle par rapport à la direction d'avance de la bande. - Machine selon l'une quelconque des revendications précédentes,
caractérisée par
un dispositif de coupe (59) pour la séparation d'un ruban d'enfilage de la bande de matériau (31). - Machine selon la revendication 6,
caractérisée en ce que
le dispositif de coupe (59) est prévu pour séparer le ruban d'enfilage en une traction libre. - Machine selon la revendication 6 ou 7,
caractérisée en ce que
le dispositif de coupe (59) est disposé sur une traverse (61) s'étendant au moins essentiellement transversalement sur la largeur de la bande de matériau (31). - Machine selon la revendication 8,
caractérisée en ce que
la traverse (61) - vue dans la direction d'avance de la bande de matériau (31) - est disposée en affleurement derrière le racloir (35 ; 35').
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 EP0887462A2 (fr) | 1998-12-30 |
EP0887462A3 EP0887462A3 (fr) | 1999-05-19 |
EP0887462B1 true 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) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6193845B1 (en) * | 1999-05-26 | 2001-02-27 | Voith Sulzer Paper Technology North America Inc. | Blow pipe tail threading system for paper-making machines |
FI113883B (fi) | 1999-08-12 | 2004-06-30 | Runtech Systems Oy | Menetelmä ja laitteisto materiaalirainan käsittelemiseksi ja materiaalirainan käyttäytymisen hallitsemiseksi |
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 |
FI124219B (fi) * | 2007-11-14 | 2014-05-15 | Valmet Technologies Inc | Kaavinlaitteisto päänvientinauhan irrottamiseksi liikkuvasta pinnasta kuiturainakoneella |
DE102011016587A1 (de) * | 2011-04-08 | 2012-10-11 | Andritz Küsters Gmbh | Vorrichtung zum Überführen einer Bahn in einer Station einer Bahn-Herstellungs- oder Verabeitungsmaschine |
Family Cites Families (10)
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 |
US5158648A (en) * | 1988-09-26 | 1992-10-27 | Weldon Scott B | Apparatus for forming a movable threading tail |
FI86900C (fi) * | 1990-10-01 | 1992-10-26 | Valmet Paper Machinery Inc | Foerfarande och anordning vid spetsdragning av en pappersbana i maongcylindertorken av en pappersmaskin |
US5560123A (en) * | 1993-02-19 | 1996-10-01 | Valmet Paper Machinery Inc. | Method and device for ensuring the run of the web in the multi-cylinder dryer of a papermachine |
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 |
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 |
EP0726355B1 (fr) * | 1995-02-09 | 2002-06-05 | Voith Paper Patent GmbH | Procédé de transfert d'une bande en papier d'une première à une deuxième station de traitement d'une machine à papier |
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 |
-
1997
- 1997-06-25 DE DE19726895A patent/DE19726895A1/de not_active Ceased
-
1998
- 1998-05-15 EP EP98108842A patent/EP0887462B1/fr not_active Expired - Lifetime
- 1998-05-15 DE DE59811701T patent/DE59811701D1/de not_active Expired - Lifetime
- 1998-06-25 US US09/104,181 patent/US6145217A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0887462A2 (fr) | 1998-12-30 |
DE19726895A1 (de) | 1999-01-07 |
US6145217A (en) | 2000-11-14 |
DE59811701D1 (de) | 2004-09-02 |
EP0887462A3 (fr) | 1999-05-19 |
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