EP1387000A1 - Bahnübergabevorrichtung - Google Patents
Bahnübergabevorrichtung Download PDFInfo
- Publication number
- EP1387000A1 EP1387000A1 EP03101493A EP03101493A EP1387000A1 EP 1387000 A1 EP1387000 A1 EP 1387000A1 EP 03101493 A EP03101493 A EP 03101493A EP 03101493 A EP03101493 A EP 03101493A EP 1387000 A1 EP1387000 A1 EP 1387000A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- transfer device
- suction element
- fibrous web
- air
- 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.)
- Withdrawn
Links
- 238000007664 blowing Methods 0.000 claims abstract description 12
- 239000000835 fiber Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F2/00—Transferring continuous webs from wet ends to press sections
Definitions
- the invention relates to a web transfer device to support the transfer a paper, cardboard, tissue or other fibrous web between two endless revolving bands, at least the receiving band is permeable to air in a machine for producing and / or refining the Fibrous web.
- suction rollers are usually used, which are wrapped in the receiving belt.
- the negative pressure emanating from the suction rolls supports the takeover of the fibrous web by the belt.
- these suction rolls are relatively expensive and noisy.
- the object of the invention is therefore to have a simple structure To create web transfer device with reduced noise.
- the object was achieved in that the receiving tape in the area of the transfer of the fibrous web at one opposite the fibrous web arranged, stationary suction element is passed.
- the fixed suction element can be designed much easier than one rotating. In addition, there is no need for ventilation of the perforation of the Noise is generated by the roller jacket of suction rollers.
- Suction element transverse to the web running direction over at least a substantial part of the preferably extend over the entire width of the fibrous web.
- Suction element at least transversely to the web running direction has several sectors, wherein the level of the negative pressure of the sectors can be adjusted separately. Because of the danger of Tearing the edges of the fibrous web must often be much stronger leading band can be fixed as the middle area. Therefore, the suction element have at least one, preferably two edge sections. This allows it in addition, the transfer of an edge band when transferring the fibrous web support separately during the start-up of the machine.
- the suction element in Web direction has several separately controllable sectors. So that the height of the negative pressure of the individual stages during the takeover of the fibrous web be adjusted.
- the suction element with a vacuum source is connected.
- the vacuum can then only or in certain Sections for generating the suction or to support the Blowing air can be used.
- the transferring tape should be able to bring the transferring tape in front of and after the suction element are guided over a guide roller.
- the Machine speed or the type of fibrous web should be at least one of the Guide rolls of the strips in a changing the distance between the strips Way adjustable.
- the transfer of the The fibrous web is still supported by the fact that the transferring belt in Area of transfer of the fibrous web at one opposite the fibrous web arranged blowing element is passed, the blowing air of which essentially Fibrous web is directed.
- the blown air therefore flows through the transfer belt and thus leads to the detachment of the fibrous web.
- the transferring belt should a web detachment device can be assigned.
- This web separation device reduces the risk of running along the fibrous web or parts thereof passing band significantly, which is because of the resulting Damage to the machine is essential. It is advantageous if the Web release device comprises at least one scraper and / or an air knife.
- the fibrous web 1 is here of an air-permeable, endlessly rotating Volume 2 in the form of a forming wire or a press felt of a paper machine Web transfer device guided. There, the fibrous web 1 is also a hand over endless, air-permeable belt 3 in the form of a press felt.
- the transfer belt 2 After the delivery of the fibrous web 1, the transfer belt 2 over a Guide roller 4 guided away from the area of transfer of the fibrous web 1.
- This Guide roller 4 is 2,3 to change the distance between the two belts positionally adjustable. So that the distance can correspond to the mode of operation of the Paper machine, the type of fibrous web 1 and / or Machine speed can be set.
- the transferring belt 2 In front of the guide roller 4, the transferring belt 2 is in the area of the transfer of the Fibrous web 1 on one extending transversely to the web running direction 12 Blowing element 10 in the form of a blow pipe.
- the blowing air of this Blow pipe is directed at least with one component to the fibrous web 1 and thus causes the fibrous web 1 to detach from the transferring belt 2.
- the blowing air of this air knife 11 is with a Component directed to the transferring belt 2 and should thus follow the Counteract fibrous web 1 or residues thereof. Since the air knife 11 here in Area of the guide roller 4 is arranged, the blowing air of the air knife 11th also be used to transfer the fibrous web 1 to the receiving belt 3 to push.
- the receiving belt 3 is before and after the transfer area over one each Guide roller 8.9 out.
- a suction element is located between these guide rollers 8, 9 5, on which the receiving band 3 in the area of the transfer of the Fibrous web 1 passes.
- the vacuum generated by the suction element 5 is said Pull fibrous web 1 towards the receiving belt 3 and therefore extends over the entire width of the fibrous web 1.
- the suction element 5 is designed here as a stationary box, with the negative pressure is generated according to the injector principle via blown air 6.
- the blown air 6 is about directed parallel to the receiving belt 3 in the web running direction 12.
- the exhaust air 7 is back in the box recycled. This discharge can still be done by connecting to a Vacuum source are supported.
- the box in terms of The strength of the vacuum can be divided into separately controllable sectors.
Landscapes
- Advancing Webs (AREA)
Abstract
Description
Diese Saugwalzen sind jedoch relativ teuer und laut.
Claims (12)
- Bahnübergabevorrichtung zur Unterstützung der Übergabe einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn (1) zwischen zwei endlos umlaufenden Bändern (2,3), von denen zumindest das übernehmende Band (3) luftdurchlässig ist, in einer Maschine zur Herstellung und/oder Veredlung der Faserstoffbahn (1), dadurch gekennzeichnet, dass
das übernehmende Band (3) im Bereich der Übergabe der Faserstoffbahn (1) an einem gegenüber der Faserstoffbahn (1) angeordneten, stationären Saugelement (5) vorbeigeführt wird. - Bahnübergabevorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sich das Saugelement (5) quer zur Bahnlaufrichtung (12) erstreckt.
- Bahnübergabevorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass sich das Saugelement (5) über zumindest einen wesentlichen Teil der, vorzugsweise über die gesamte Breite der Faserstoffbahn (1) erstreckt.
- Bahnübergabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
das Saugelement (5) wenigstens quer zur Bahnlaufrichtung (12) mehrere Sektoren besitzt, wobei die Höhe des Unterdrucks der Sektoren separat einstellbar ist. - Bahnübergabevorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass das Saugelement (5) zumindest eine, vorzugsweise zwei Rand-Sektionen besitzt.
- Bahnübergabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
der Unterdruck des Saugelementes (5) über etwa entlang des übernehmenden Bandes (3) gerichtete Blasluft (6) erzeugt wird. - Bahnübergabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
das Saugelement (5) mit einer Unterdruckquelle verbunden ist. - Bahnübergabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
das übernehmende Band (3) vor und nach dem Saugelement (5) über je eine Leitwalze (8,9) geführt wird. - Bahnübergabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
wenigstens eine der Leitwalzen (4,8,9) der Bänder (2,3) in einer den Abstand zwischen den Bändern (2,3) verändernden Weise verstellbar ist. - Bahnübergabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
das übergebende Band (2) luftdurchlässig ist und im Bereich der Übergabe der Faserstoffbahn (1) an einem gegenüber der Faserstoffbahn (1) angeordneten Blaselement (10) vorbeigeführt wird, dessen Blasluft im wesentlichen zur Faserstoffbahn (1) gerichtet ist. - Bahnübergabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
dem übergebenden Band (2) nach dem Bereich der Übergabe der Faserstoffbahn (1) eine Bahnablösevorrichtung zugeordnet wird. - Bahnübergabevorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass die Bahnablösevorrichtung zumindest einen Schaber und/oder ein Luftmesser (11) umfasst.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002127757 DE10227757A1 (de) | 2002-06-21 | 2002-06-21 | Bahnübergabevorrichtung |
| DE10227757 | 2002-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1387000A1 true EP1387000A1 (de) | 2004-02-04 |
Family
ID=29719331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03101493A Withdrawn EP1387000A1 (de) | 2002-06-21 | 2003-05-23 | Bahnübergabevorrichtung |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1387000A1 (de) |
| DE (1) | DE10227757A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI122309B (fi) * | 2008-03-28 | 2011-11-30 | Metso Paper Inc | Menetelmä ja laitteisto kuiturainaradan siirtämiseksi tukikudokselta toiselle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1117992B (de) * | 1957-04-05 | 1961-11-23 | Voith Ag J M | Vorrichtung zum selbsttaetigen UEberfuehren der nassen Papierbahn in der Papiermaschine von der Siebsaugwalze auf das Abnahmetuch |
| US4113557A (en) * | 1976-04-14 | 1978-09-12 | Valmet Oy | Paper manufacturing structure particularly for detaching a web from a wire |
| US4698919A (en) * | 1986-04-08 | 1987-10-13 | Beloit Corp. | Apparatus for assisting the transfer of a web to a drying section |
| US5031338A (en) * | 1987-02-13 | 1991-07-16 | Beloit Corporation | Vacuum roll transfer apparatus |
| US5232555A (en) * | 1988-09-29 | 1993-08-03 | Pulp And Paper Research Institute Of Canada | Wet cellulosic web transfer method using air doctor blade |
| US5830321A (en) * | 1997-01-29 | 1998-11-03 | Kimberly-Clark Worldwide, Inc. | Method for improved rush transfer to produce high bulk without macrofolds |
| US6306257B1 (en) * | 1998-06-17 | 2001-10-23 | Kimberly-Clark Worldwide, Inc. | Air press for dewatering a wet web |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3293139B2 (ja) * | 1996-09-03 | 2002-06-17 | ザ、 プロクター、 エンド、 ギャンブル、 カンパニー | 通気乾燥抄紙工程において真空付加率を制御することのできる真空装置 |
-
2002
- 2002-06-21 DE DE2002127757 patent/DE10227757A1/de not_active Withdrawn
-
2003
- 2003-05-23 EP EP03101493A patent/EP1387000A1/de not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1117992B (de) * | 1957-04-05 | 1961-11-23 | Voith Ag J M | Vorrichtung zum selbsttaetigen UEberfuehren der nassen Papierbahn in der Papiermaschine von der Siebsaugwalze auf das Abnahmetuch |
| US4113557A (en) * | 1976-04-14 | 1978-09-12 | Valmet Oy | Paper manufacturing structure particularly for detaching a web from a wire |
| US4698919A (en) * | 1986-04-08 | 1987-10-13 | Beloit Corp. | Apparatus for assisting the transfer of a web to a drying section |
| US5031338A (en) * | 1987-02-13 | 1991-07-16 | Beloit Corporation | Vacuum roll transfer apparatus |
| US5232555A (en) * | 1988-09-29 | 1993-08-03 | Pulp And Paper Research Institute Of Canada | Wet cellulosic web transfer method using air doctor blade |
| US5830321A (en) * | 1997-01-29 | 1998-11-03 | Kimberly-Clark Worldwide, Inc. | Method for improved rush transfer to produce high bulk without macrofolds |
| US6306257B1 (en) * | 1998-06-17 | 2001-10-23 | Kimberly-Clark Worldwide, Inc. | Air press for dewatering a wet web |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10227757A1 (de) | 2004-01-08 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
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| AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
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| 17P | Request for examination filed |
Effective date: 20040804 |
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| AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VOITH PATENT GMBH |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20060524 |