EP1440926A2 - Transporteur à courroie aspirante et machine comportant un tel convoyeur pour la fabrication ou la finition d'une bande de papier - Google Patents

Transporteur à courroie aspirante et machine comportant un tel convoyeur pour la fabrication ou la finition d'une bande de papier Download PDF

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Publication number
EP1440926A2
EP1440926A2 EP04007361A EP04007361A EP1440926A2 EP 1440926 A2 EP1440926 A2 EP 1440926A2 EP 04007361 A EP04007361 A EP 04007361A EP 04007361 A EP04007361 A EP 04007361A EP 1440926 A2 EP1440926 A2 EP 1440926A2
Authority
EP
European Patent Office
Prior art keywords
vacuum
conveyor
belt
roller
paper web
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
EP04007361A
Other languages
German (de)
English (en)
Other versions
EP1440926B1 (fr
EP1440926A3 (fr
Inventor
Sylvain Demers
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 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
Priority claimed from DE20019346U external-priority patent/DE20019346U1/de
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1440926A2 publication Critical patent/EP1440926A2/fr
Publication of EP1440926A3 publication Critical patent/EP1440926A3/fr
Application granted granted Critical
Publication of EP1440926B1 publication Critical patent/EP1440926B1/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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/52—Auxiliary process performed during handling process for starting
    • B65H2301/522—Threading web into machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B65H2406/322—Suction distributing means
    • B65H2406/3221—Suction distributing means for variable distribution in the direction of transport
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines

Definitions

  • the invention relates to a vacuum belt conveyor device comprising: an air permeable endless conveyor belt; a first roller located at the upstream end of the vacuum belt conveyor and a second roller located at the downstream end of the vacuum belt conveyor, the rollers guiding the conveyor belt as the conveyor belt rotates; the endless conveyor belt has a transporting run that runs from the first to the second roll, and also a returning run that runs from the second to the first roll; the transporting run runs over a vacuum box, in which a vacuum can be generated, which propagates through the transporting run, in order to suck in the paper web or a band thereof, which / should be guided by means of the conveyor belt.
  • the invention further relates to a machine for producing or finishing a paper web, with such a vacuum belt conveyor.
  • Vacuum belt conveyors are used to thread one To facilitate paper web, in a machine for manufacturing or Refinement or further processing of such a web.
  • a narrow "ribbon" or insertion strip from separated from the running web. This band is made using the vacuum belt conveyor for example from the end of a machine section to Infeed area transferred to a subsequent machine section.
  • German utility model 299 10 850 there is a vacuum belt conveyor described which is an air permeable endless band comprises, which runs over two rollers and a vacuum box.
  • the Vacuum of the vacuum box is planted by the transporting Trumm of the tape through to a web or a ribbon, which means of the conveyor belt to be sucked.
  • One of the roles is slidable to tension the tape.
  • the ribbon cutter cuts the ribbon and thus forms a new beginning of the ribbon, which now becomes a calender is transported. If there was no ribbon cutter, then it would the belt conveyor a "double ribbon" from the Pull the waste bin up; this would occur during the Threading cause problems. On the brochure mentioned above "Double-tail elimination" is pointed out.
  • a machine for the production or finishing of a paper web after the Preamble of claim 1 or 2, with a vacuum belt conveyor as mentioned at the beginning, is known from WO 00/19013.
  • the vacuum is generated in Vacuum box by means of and on so-called foils arranged blow nozzles.
  • An improved conveyor device is to be created, which works reliably with different types of paper, even with paper types high tensile strength and especially in modern paper manufacturing or Finishing machines with extremely high working speed (for example over 2000 m / min.) works reliably.
  • the conventionally on the roller or the paper web delivering belt scraper provided on the cylinder delivering the paper web be made redundant.
  • the use of a Ribbon cutter and a feed plate can be dispensed with.
  • the aim of the invention is in particular an improved construction that it allowed the closer upstream end of the vacuum belt conveyor than previously on the surface giving off the paper web (for example Surface of a roller or cylinder) to be arranged.
  • the first Roll close to a path of the paper web or to the paper web emitting surface of the machine is placed, and that to form a Pickup suction zone, the first roller is designed as a suction roller and on one Vacuum source is connected so that from the vacuum source generated negative pressure through the conveyor belt running over the first roller propagates around the paper web or a ribbon thereof, which / which should be guided by means of the belt (Claim 1).
  • the vacuum belt conveyor device is also provided for this connection according to claim 13.
  • the upstream end of the conveyor close to a walkway of the Paper web or on a surface of the paper web emitting Machine is placed, and that to form a pickup suction zone Conveyor belt in the area of the upstream end of the conveyor via a curved and perforated guide surface of a vacuum box runs in which a negative pressure can be generated, which is characterized by the Guide surface running conveyor belt propagates through to the paper web or a ribbon of the same which is guided by means of the ribbon should suck in (claim 2).
  • the vacuum belt conveyor device according to claim 14 is also provided.
  • the belt conveyor device has a first roller designed as a suction roller or a curved and perforated guide surface for the air-permeable endless conveyor belt; this suction roller or the guide surface is arranged at the upstream end of the vacuum belt conveyor.
  • the perforation of the guide surface and, accordingly, perforations of a jacket of the first roll are open to the outside against the endless conveyor belt, and open inwards towards a negative pressure source.
  • the suction roller or the curved and perforated one works Guide surface as a pickup suction zone, which according to the invention is very close to
  • the path of the paper web can be placed, especially close to the web emitting surface (sieve or felt or roller or cylinder).
  • the paper web or the ribbon, in particular a new ribbon start, in a much shorter time than before on the conveyor belt of the vacuum belt conveyor transferred.
  • the pickup suction zone of the vacuum belt conveyor touch the path of the web directly so that the ribbon, especially a new beginning of the belt, directly on the conveyor belt the vacuum belt conveyor can be transferred.
  • the ribbon preferably a new one Beginning of the ribbon, by means of at least one edge blowing nozzle of this Detached surface.
  • the ribbon is removed from the ribbon of the Conveying device detected, in the area of the suction roll or curved and perforated guide surface. The best results can be expected when the new beginning of the ribbon at a short distance is formed upstream of the (preferably two) edge blowing nozzles, for example according to DE 199 00 986.
  • an improved threading curtain in paper machines achieved without the roller delivering the paper web or the ribbon or on the cylinder delivering the paper web or the ribbon Ribbon scraper is required.
  • the vacuum belt conveyor do not need an insertion plate.
  • a ribbon cutter can also be superfluous.
  • the curved and perforated guide surface can be used as the circumferential one Sheath of the first role or formed as a curved, stationary plate his.
  • the vacuum box within the Loop of the band is arranged and that the vacuum box for perforated rotatable jacket of the first roll is open and Sealing elements which supports the outer surface of the rotatable Can touch the coat.
  • the vacuum box can advantageously be divided into at least two sections be arranged one behind the other along the belt path.
  • a practical embodiment is characterized in that the perforated jacket of the first roll open upstream section of the Vacuum box can be acted upon with a higher vacuum than that downstream section.
  • One of the rollers for tensioning the belt can advantageously be displaceable.
  • the second roller can be relative to the vacuum box mentioned be movable.
  • the first role is from Vacuum box is worn, both the first role as appropriate also the vacuum box relative to a stationary component, for example a frame that can be moved.
  • said stationary component as a second (downstream) section of the Vacuum box is formed.
  • At the upstream end of the vacuum belt conveyor at least one edge blowing nozzle can be provided for ejecting a Air jet between a roller or cylinder delivering the web and the web or ribbon, further around the web or ribbon on the to drive upstream end of the conveyor.
  • the at least one Edge blowing nozzle is preferably suitable to start the new Web or ribbon on the upstream end of the conveyor to drive.
  • the invention also relates to an advantageous use of a vacuum belt conveyor.
  • the vacuum belt conveyor device 8 shown in FIGS. 1 and 2 comprises a first roller 11 at the upstream end of the conveyor is arranged.
  • An air permeable endless band and the downstream one End of conveyor (including a second roll) are not shown.
  • the first roll 11 has a perforated jacket 13 and is made of two Support shields 14, which is rigid with the upstream section 15a a vacuum box 15 are connected.
  • This vacuum box 15 is divided into said upstream section 15a and one downstream section 15b.
  • the roller 11 rotates during operation, for example clockwise according to arrow A; then runs accordingly the endless ribbon.
  • the upstream section 15a of the vacuum box 15 is perforated Coat 13 of the first role open. Seals 16 and 17 are between the Jacket 13 and section 15a provided.
  • During operation creates a negative pressure within the upstream section 15a (For example, by connecting section 15a to a vacuum inlet vacuum source, not shown, is connected).
  • the negative pressure will then through those perforations of the jacket 13 that are not currently covered by the tape, propagate into the interior of the roller 11 and from there through the other perforations of the jacket 13 and through the breathable tape.
  • the tape becomes a web (due to suction) or capture a ribbon 9 (to be transported) earlier than one conventional vacuum belt conveyor that only closed rollers having.
  • the upstream section 15a is also provided with a cover plate 22 (made of ceramic or other low-friction material), wherein suction slots 23 are provided which are (preferably) parallel to Extend the tape running direction.
  • a cover plate 22 made of ceramic or other low-friction material
  • suction slots 23 are provided which are (preferably) parallel to Extend the tape running direction.
  • runner 24 a thin perforated film connected, made for example of stainless steel; runner 24 will slide on cover plate 20 when the belt is tensioned will be.
  • the negative pressure prevailing in the upstream section 15a should preferably be higher than that in the downstream section 15b prevailing negative pressure.
  • Various external or internal vacuum sources can be used; such are in the not yet published Patent application DE 100 09 188 described.
  • the vacuum belt conveyor device shown in Fig. 3 includes a air permeable endless belt 10, a first roller 11, a second roller 12 and a vacuum box 25.
  • a web or ribbon that transports is designated 9.
  • the first roll is 11 as one Suction roll formed with a perforated rotatable jacket 13.
  • the vacuum box 25 is a integrally formed stationary component that a cover plate 20 with the usual suction openings 21.
  • the vacuum box 25 carries both first roller 11 as well as the second roller 12. The latter is for tensioning the Belt 10 slidable, the first roller is relative to the vacuum box 25 not movable.
  • the vacuum box 25 is open towards the rotatable jacket 13. Again seals 16, 17 are provided.
  • the one inside the box 25 generated negative pressure is planted in and through the first roller 11 Volume 10 continues, so that the volume 9 earlier than before, namely on Scope of the suction roller 11, is forced by suction to adhere to the To nestle volume 10.
  • the interior of the Vacuum box 25 can be divided by an intermediate wall 26, so that you provide a higher vacuum in the area of the suction roller 11 can.
  • Fig. 4 shows a further modification of the vacuum belt conveyor device described above. Similar to the conventional conveyors the belt 10 over two normal closed rollers 11a and 12, which by an integral vacuum box 35 are worn. In the area of upstream end of the conveyor is for the belt 10 a stationary, convexly curved and perforated guide surface 32. This curved guide surface 32 forms a curved suction zone that the serves the same purpose as the suction roller 11 of FIGS. 1 to 3.
  • the curved guide surface 32 is, for example, perforated curved plate 33 formed. This can be an integral part of the levels Cover plate 20a of the box 35 or it can be separate from this Cover plate 20a, which in any case is somewhat oblique relative to the back running run of the tape is arranged.
  • the vacuum box 35 can comprise or carry a box section 35, which box section a part of the first roll 11 a wrapped and said curved perforated Plate 33 carries.
  • Fig. 5 shows some details of a paper making machine, namely a last drying cylinder 40, a drying felt 41, a felt guide roller 42, a paper guide roller 43 and a scraper 44.
  • the normal running distance of the Paper web is designated 9A.
  • the Orbit down at 9B; a ribbon 9 (at arrow 45) is removed from the web 9B separated from the cylinder 40 by means of one or two edge blowing nozzles 46 (see Fig. 2) detached and immediately by a first vacuum belt conveyor 8 recorded.
  • This conveyor transports the Bands 9 to a second belt conveyor 8 '; at least the first Conveyor is designed in accordance with the present invention.
  • Fig. 6 shows a vacuum belt conveyor 8A, which in turn according to the invention is formed.
  • the upstream end touches the Conveyor a felt or screen 49, the one running Paper web 9D carries. This web is made immediately by contact on the tape transferred to the conveyor 8A. In this case, the lower band run the transporting dream.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Advancing Webs (AREA)
  • Paper (AREA)
EP04007361A 2000-11-14 2001-11-09 Transporteur a courroie aspirante et machine comportant un tel convoyeur pour la fabrication ou la finition d'une bande de papier Expired - Lifetime EP1440926B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20019346U 2000-11-14
DE20019346U DE20019346U1 (de) 2000-11-14 2000-11-14 Vacuum-Bandfördervorrichtung
EP01126746A EP1205415A3 (fr) 2000-11-14 2001-11-09 Transporteur à courroie aspirante

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP01126746A Division EP1205415A3 (fr) 2000-11-14 2001-11-09 Transporteur à courroie aspirante

Publications (3)

Publication Number Publication Date
EP1440926A2 true EP1440926A2 (fr) 2004-07-28
EP1440926A3 EP1440926A3 (fr) 2004-09-29
EP1440926B1 EP1440926B1 (fr) 2007-09-26

Family

ID=38565134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04007361A Expired - Lifetime EP1440926B1 (fr) 2000-11-14 2001-11-09 Transporteur a courroie aspirante et machine comportant un tel convoyeur pour la fabrication ou la finition d'une bande de papier

Country Status (3)

Country Link
EP (1) EP1440926B1 (fr)
AT (1) ATE374155T1 (fr)
DE (1) DE50113072D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1972718A2 (fr) 2007-03-23 2008-09-24 Voith Patent GmbH Dispositif de guidage ou de transfert d'une bande en papier, carton ou autre matière fibreuse
DE102008002260A1 (de) 2008-06-06 2009-12-10 Voith Patent Gmbh Vorrichtung zum Führen bzw. Überführen einer Faserstoffbahn
DE102008044226A1 (de) 2008-12-01 2010-06-02 Voith Patent Gmbh Vorrichtung zum Führen bzw. Überführen einer Faserstoffbahn
EP3250750B1 (fr) 2015-01-28 2019-11-13 Andritz Küsters GmbH Procédé et dispositif servant à produire des non-tissés par voie humide
EP3088603B1 (fr) 2015-04-28 2020-10-21 Andritz Küsters GmbH Procede et dispositif de production de non-tisses par voie humide

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009001743A1 (de) 2009-03-23 2010-09-30 Voith Patent Gmbh Vorrichtung zum Führen eines Materialbahnstreifens

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254666A1 (fr) * 1986-07-18 1988-01-27 Beloit Corporation Dispositif pour le transfert d'une bande à une section de séchage
DE4040485A1 (de) * 1990-12-18 1992-07-02 Mabeg Maschinenbau Gmbh Nachf Vorrichtung zum foerdern eines insbesondere geschuppten stroms von bogen
US5355593A (en) * 1992-06-24 1994-10-18 J.M. Voith Gmbh Device for transferring a fiber web

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254666A1 (fr) * 1986-07-18 1988-01-27 Beloit Corporation Dispositif pour le transfert d'une bande à une section de séchage
DE4040485A1 (de) * 1990-12-18 1992-07-02 Mabeg Maschinenbau Gmbh Nachf Vorrichtung zum foerdern eines insbesondere geschuppten stroms von bogen
US5355593A (en) * 1992-06-24 1994-10-18 J.M. Voith Gmbh Device for transferring a fiber web

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1972718A2 (fr) 2007-03-23 2008-09-24 Voith Patent GmbH Dispositif de guidage ou de transfert d'une bande en papier, carton ou autre matière fibreuse
DE102007014118A1 (de) 2007-03-23 2008-09-25 Voith Patent Gmbh Vorrichtung zum Führen bzw. Überführen einer Papier-, Karton- oder anderen Faserstoffbahn
EP1972718A3 (fr) * 2007-03-23 2009-08-05 Voith Patent GmbH Dispositif de guidage ou de transfert d'une bande en papier, carton ou autre matière fibreuse
DE102008002260A1 (de) 2008-06-06 2009-12-10 Voith Patent Gmbh Vorrichtung zum Führen bzw. Überführen einer Faserstoffbahn
DE102008044226A1 (de) 2008-12-01 2010-06-02 Voith Patent Gmbh Vorrichtung zum Führen bzw. Überführen einer Faserstoffbahn
EP2192227A2 (fr) 2008-12-01 2010-06-02 Voith Patent GmbH Dispositif de guidage ou de transfert d'une bande de matière fibreuse
EP3250750B1 (fr) 2015-01-28 2019-11-13 Andritz Küsters GmbH Procédé et dispositif servant à produire des non-tissés par voie humide
EP3088603B1 (fr) 2015-04-28 2020-10-21 Andritz Küsters GmbH Procede et dispositif de production de non-tisses par voie humide

Also Published As

Publication number Publication date
DE50113072D1 (de) 2007-11-08
ATE374155T1 (de) 2007-10-15
EP1440926B1 (fr) 2007-09-26
EP1440926A3 (fr) 2004-09-29

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