EP1505202B1 - Dispositif de traitement d'une bande - Google Patents

Dispositif de traitement d'une bande Download PDF

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Publication number
EP1505202B1
EP1505202B1 EP20040018282 EP04018282A EP1505202B1 EP 1505202 B1 EP1505202 B1 EP 1505202B1 EP 20040018282 EP20040018282 EP 20040018282 EP 04018282 A EP04018282 A EP 04018282A EP 1505202 B1 EP1505202 B1 EP 1505202B1
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EP
European Patent Office
Prior art keywords
flexible
running direction
nip
shoe
accordance
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 - Fee Related
Application number
EP20040018282
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German (de)
English (en)
Other versions
EP1505202A1 (fr
Inventor
Jörg Dr. Rheims
Eugen Schnyder
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 Patent GmbH
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Filing date
Publication date
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Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1505202A1 publication Critical patent/EP1505202A1/fr
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Publication of EP1505202B1 publication Critical patent/EP1505202B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/006—Calenders; Smoothing apparatus with extended nips
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses

Definitions

  • the invention relates to a device for treating a material web, in particular for influencing the gloss and / or smoothness of a paper or board web or for dewatering a paper or nonwoven web, with at least one nip formed between a Niptician with at least one extended in the running direction broad nip shoe and a wide flexible shoe guided circulating flexible band and a complementary counter unit is formed, wherein the broad nip shoe on a plurality of transversely consecutive, supported on an axis Anpress units is acted upon and the Breitnip GmbH also arranged at least one between the Breitnipschuh and the circulating flexible band, from flexible and / or elastic material existing plate and a plurality between this and the broad nip shoe provided, in the web running direction successive actuators and the actuators separated and / or group driven sin d.
  • a device of this kind is from the DE-A-196 07 144 known.
  • Calender arrangements with a shoe roll having a peripheral, relatively flexible jacket, which is loadable by means of a one-piece pressure shoe towards a counter-roller are known.
  • These so-called Breitnipkalander serve the finishing of paper or cardboard sheets.
  • the finishing result, i. Gloss and smoothness is dependent on the nip width measured in the web running direction, which is determined by the width of the shoe. Since the shoe is integral with the usual Breitnipkalandern, the nip width can only be changed by replacing the shoe with a wider or narrower shoe. Apart from the fact that for different nip widths according to different shoes must be kept, which is correspondingly expensive, such a shoe exchange is also extremely expensive.
  • the invention has for its object to provide an improved device of the type mentioned, in which the width of the broad nip shoe measured in the web running direction, if necessary, can be changed quickly in the simplest possible way.
  • Known device comprises the Breitnip Anlagen only two in the web running direction successively arranged rows of transversely to the web running direction successive actuators which are for applying the flexible or elastic plate in each case about an axis extending transversely to the web running direction pivotable.
  • the actuators are additionally displaceable in the web running direction.
  • One from the US Pat. No. 6,334,933 known Breitnippresse comprises a roller and a stationary counterpart, over which a press belt is guided, which can be pressed via a flexible plate to the roller, including the flexible plate provided by the stationary counterpart hydrostatic Pressure pockets can be acted upon.
  • hydrostatic Pressure pockets By a corresponding loading of the flexible plate by the hydrostatic pressure pockets only different pressure longitudinal profiles are adjustable again.
  • the Breitnip knew Breitnippresse comprises a broad nip shoe which is pivotally mounted at its inlet end to a transverse to the direction of web travel extending axis and at the other end by a Anpressech so acted upon that guided over the wide nip shoe circulating flexible band by a directly acting on this section of the Breitnipschuhs is pressed against a counter-roller.
  • a cylinder / piston unit actuator which is controlled separately from the Anpressech and the piston member, the circulating flexible band directly again applied.
  • the actuator can also be depressurized in order to shorten the nip width.
  • the actuator is formed by one or more parallel to each other, pressurized with the same pressure hoses. In this case, a flexible plate is again provided between the wide-nip shoe and the circulating flexible band.
  • this flexible plate is supported in the web running direction in front of the actuator in the region of the inlet end of the broad nip and within the same and in the web running direction after the actuator in the region of the outlet end of the broad nip and within the same directly to the broad nip shoe.
  • this flexible plate is supported in the web running direction in front of the actuator in the region of the inlet end of the broad nip and within the same and in the web running direction after the actuator in the region of the outlet end of the broad nip and within the same directly to the broad nip shoe.
  • the material to be treated web which may be, for example, a paper web, pressed by a steel strip against a rotating drum, to which the steel strip is stretched around this drum.
  • a yoke spanned by a roller belt is provided on which a plurality of cylinder / piston units are arranged, which act on the roller belt via a laminated core and press it against the steel belt.
  • the support yoke is stationary.
  • the laminated core consists of several, one-sided interconnected sheets, so it is flexible in the formation of its uniform radius of curvature.
  • the material web to be treated is again pressed by means of a steel strip against a rotating drum, to which the steel strip is stretched around this drum.
  • the steel strip is acted upon by a pressing plate by a pressing mechanism having a plurality of pressing members on a sheet-like support coaxial with the drum to apply a uniform pressure to the pressing plate.
  • the carrier is arranged at a constant distance from the drum and thus stationary again in the pressing direction.
  • the press plate has a curved, coaxial to the drum shape and is provided with a mesh-like medium passage for a heating fluid.
  • This object is achieved in that the viewed in the web running direction both at the inlet side and outlet end of the wide nip shoe and in the central region of the broad nip shoe actuators provided in the web running direction nip width is variably adjustable by a corresponding application of the flexible or elastic plate.
  • At one of the DE 195 44 979 A1 known device for compressing, smoothing and / or dewatering a fibrous web at least one support element is used, which is divided into a plurality, in the direction of passage of the fibrous web one behind the other support element sections.
  • the subdivision of the support element only serves here to produce in the web running direction a pressure profile with at least two successive pressure maxima.
  • the region between the flexible or elastic plate and the circulating flexible band is in particular hydrodynamically and / or hydrostatically lubricated so that the circulating flexible band can slide optimally over the plate.
  • mechanical, hydraulic, pneumatic, electromechanical, electromagnetic and / or thermal actuators may be provided.
  • the actuators are at least partially formed by a respective cylinder / piston unit.
  • These actuators may be formed, for example, at least partially by a respective hydraulic cylinder / piston unit.
  • these actuators are at least partially formed by a respective double-acting cylinder / piston unit.
  • the flexible or elastic plate is provided on its side facing the broad nip with successive in the web running direction, each extending in the transverse direction sealing strips which enter provided in Breitnipschuh slots to between the Breitnipschuh and the bendable or elastic plate by the sealing strips to form limited pressure chambers that are variable Adjustment of the resulting nip width in the web running direction can be acted upon accordingly by pressurized fluid.
  • the pressure chambers are expediently acted upon by pressurized fluid via feed channels provided in the wide nip shoe.
  • correspondingly controllable hoses can advantageously be provided in the chambers formed by the slots and in these engaging strips, whereby any sealing between moving parts is eliminated. If the flexible or elastic plate is formed in this case without webs and supported directly over the hoses, resulting in a more mobile and easy tilting arrangement.
  • an elastomer profile is arranged between the wide nip shoe and the flexible or elastic plate having a plurality in the web running direction consecutive pressure chambers, which are acted upon for variable adjustment of the resulting nip width in the web running direction accordingly with pressurized fluid.
  • such an embodiment is also advantageous in which a plurality of adjusting cams following one another in the web running direction are arranged between the wide-nip shoe and the flexible or elastic plate, in which case the nip width resulting in the web running direction can be variably adjusted via these adjusting cams.
  • a plurality of successive in the web running direction thermal actuators are arranged between the wide nip shoe and the flexible or elastic plate, wherein the resulting nip width in the web running direction in the present case on these thermal actuators is variably adjustable.
  • the thermal actuators each consist of thermally conductive material, wherein each of them is traversed by a heat medium and the nip width resulting in the web running direction is variably adjustable by a corresponding variation of the temperature of the heat medium.
  • the pressing units acting on the broad nip shoe are preferably separable and / or group-wise controllable. This makes it possible, in particular, to compensate the axis bending occurring under load.
  • the wide nip unit may in particular be formed by a wide nip roll with a flexible roll shell guided over the flexible or elastic plate.
  • the device according to the invention comprises at least one wide-nip calender.
  • FIG. 1 shows a schematic representation of a formed between a Breitniptician 10 and a backing roll 12 12 wide nip a device 16 for influencing gloss and / or smoothness of a web, which may be in particular a paper or board web.
  • the Breitnip knew 10 comprises at least one extended in the web running direction L broad nip shoe 18 and guided over the Breitnipschuh 18 circulating flexible belt 20.
  • This Breitniptician 10 in particular by a Breitnipwalze with a wide nip shoe 18 and a this associated, further below even closer descriptive flexible or elastic plate guided flexible roll shell 20 may be formed.
  • the device 16 in question may be in particular a Breitnipkalander.
  • the Breitniptician 10 moreover comprises at least one arranged between the broad nip shoe 18 and the rotating flexible band 20 plate 22 made of flexible and / or elastic material and more flexible between this or elastic plate 22 and the Breitnipschuh 18 provided, in the web running direction L successive actuators 24 i , over which the resulting in web direction L nip width B i by a corresponding application of the flexible or ealstica plate 22 is variably adjustable.
  • the actuators 24 i are preferably separately and / or group-controlled.
  • the area between the flexible or elastic plate 22 and the circulating flexible band 20 is in particular hydrodynamically and / or hydrostatically lubricated.
  • mechanical, hydraulic, pneumatic, electromechanical, electromagnetic and / or thermal actuators 24 i may be provided.
  • the wide-nip shoe 18 can be acted upon by a plurality of laterally following, on an axis supported Anpressticianen 26.
  • These pressing units 26 are expediently separated and / or controlled in groups, so that a respective occurring under load axle deflection can be compensated.
  • FIG. 1 shows a schematic representation of an exemplary embodiment in which between the wide nip shoe 18 and the flexible or elastic plate 22 as actuators double-acting hydraulic cylinder / piston units 24 1 are provided.
  • the broad nip shoe 18 is thus equipped on its side facing the counter roll 12 with actuators 24 1 , which act on a flexible or elastic plate 22 whose top is hydrodynamically or hydrostatically lubricated, so that the circumferential flexible band 20 optimally slide over the plate 22 can.
  • actuators 24 1 By an appropriate control of the Actuators 24 1 can be changed in the web direction L resulting nip width in the desired manner.
  • the flexible or elastic plate 22 on its side facing the broad nip shoe 18 with a plurality of successive web direction L, each provided in the transverse direction sealing strips 28.
  • the sealing strips 28 are guided in slots 30 provided in the wide-nip shoe 18.
  • laterally limited pressure chambers 24 2 are formed between the wide-nip shoe 18 and the flexible or elastic plate 22 by the sealing strips 28, which can be acted upon correspondingly with pressure fluid for the variable adjustment of the nip width resulting in the web running direction L.
  • the actuators in question thus include the pressure chambers 24 2 provided between the broad nip shoe 18 and the flexible or elastic plate 22 and bounded by the sealing strips 28.
  • an elastomeric profile 36 is disposed between the broad nip shoe 18 and the flexible or elastic plate 22, which has a plurality of successive web in the direction of pressure chambers 24 2 , the variable adjustment of the resulting webbing L nip width B i accordingly with pressurized fluid, eg pressure oil , are acted upon.
  • the relevant actuators thus include the pressure chambers 24 2 provided in the elastomer profile 36.
  • thermal actuators 24 5 are arranged.
  • the nip width resulting in the web running direction L can be set variably via these thermal actuators 24 5 .
  • the thermal actuators 24 5 each consist of thermally conductive material, wherein they are traversed by a heat medium.
  • the nip width resulting in the web running direction L is thus variably adjustable by a corresponding variation of the temperature of the heat medium.
  • the embodiment according to FIG. 8 corresponds in its basic structure of the embodiment according to FIG. 2 , but instead of the pressure chambers provided therein receiving chambers for individually controllable flexible tubes 37 are provided.
  • the use of such druckbeaufschlagbarer Tubing leads to the advantage that no seals are required between moving parts. If in this case the flexible or elastic plate is formed without webs and the guided in corresponding recesses of Breitnipschuhs 18 or content Erten pressure hoses 37 directly to the plate 22, the result is a comparison with that in the FIG. 8 illustrated embodiment more mobile and easier tilting arrangement.
  • the compressive stress in the nip can be changed quickly and very sensitively in a simple manner.
  • the invention can be used to particular advantage for influencing gloss and / or smoothness of a paper or board web, its scope is not limited thereto.
  • the invention can also be used in press sections which serve for dewatering webs, in which case appropriate application-specific advantages can be achieved by targeted activation of the actuators.

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Claims (17)

  1. Appareil (13) pour le traitement d'une nappe de matériau, en particulier pour influencer la luisance et/ou le lissage d'une nappe de papier ou de carton, ou pour la déshumidification d'une nappe de papier ou de fibres non tissées, comprenant au moins une zone de pinçage prolongé (14), définie entre une unité à pinçage prolongé (10) comprenant au moins une semelle à pinçage prolongé (18), prolongée en direction de circulation (L) de la nappe, ainsi qu'une bande flexible (20) en recirculation, guidée sur la semelle à pinçage prolongé (18) et une unité antagoniste complémentaire (12), ladite semelle à pinçage prolongé (18) pouvant être sollicitée par plusieurs unités de pressage (26) qui se suivent en direction transversale et qui sont soutenues sur un axe, et ladite unité à pinçage prolongé (10) comprend en outre une plaque (22), en un matériau souple et/ou élastique, agencée entre la semelle à pinçage prolongé (18) et la bande flexible en recirculation (20), ainsi que plusieurs actionneurs (24i) prévus entre ladite plaque et la semelle à pinçage prolongé (18) et qui se suivent mutuellement dans la direction de circulation (L) de la nappe, lesdits actionneurs (24i) pouvant être pilotés séparément et/ou par groupes,
    caractérisé en ce qu'au moyen des actionneurs (24i) qui sont prévus, considérés dans la direction de circulation (L) de la nappe, aussi bien à l'extrémité d'entrée qu'à l'extrémité de sortie de la semelle à pinçage prolongé (18), de même que dans la zone médiane de la semelle à pinçage prolongé (18), la largeur de pinçage (Bi) qui en résulte dans la direction de circulation (L) de la nappe est réglable de façon variable par une sollicitation correspondante de la plaque souple ou élastique (22).
  2. Appareil selon la revendication 1,
    caractérisé en ce que la zone entre la plaque souple ou élastique (22) et la bande flexible en recirculation (20) est lubrifiée par voie hydrodynamique et/ou hydrostatique.
  3. Appareil selon la revendication 1 ou 2, caractérisé en ce qu'il est prévu des actionneurs (24i) mécaniques, hydrauliques, pneumatiques, électromécaniques, électromagnétiques et/ou thermiques.
  4. Appareil selon l'une des revendications précédentes,
    caractérisé en ce que les actionneurs (24i) sont formés au moins partiellement par des unités à piston-et-cylindre respectives (241).
  5. Appareil selon la revendication 4,
    caractérisé en ce que les actionneurs (24i) sont formés au moins partiellement par des unités à piston-et-cylindre hydrauliques respectives (241).
  6. Appareil selon la revendication 4 ou 5,
    caractérisé en ce que les actionneurs (24i) sont formés au moins partiellement par des unités à piston-et-cylindre à double effet respectives (211).
  7. Appareil selon l'une des revendications 1 à 3,
    caractérisé en ce que, sur son côté tourné vers la semelle à pinçage prolongé (18), la plaque souple ou élastique (22) est pourvue de plusieurs barrettes d'étanchéité (28) qui se suivent dans la direction de circulation (L) de la nappe et qui s'étendent respectivement en direction transversale, lesdites barrettes d'étanchéité pénétrant dans des fentes (30) prévues dans la semelle à pinçage prolongé (18) afin de former, entre la semelle à pinçage prolongé (18) et la plaque souple ou élastique, des chambres à pression (242) délimitées par les barrettes d'étanchéité et susceptibles d'être alimentées avec un fluide sous pression de façon correspondante en vue d'un réglage variable de la largeur de pinçage (Bi) qui s'établit dans la direction de circulation (L) de la nappe.
  8. Appareil selon la revendication 7,
    caractérisé en ce que les chambres à pression (242) sont susceptibles d'être alimentées avec un fluide sous pression via des canaux d'alimentation (34) prévus dans la semelle à pinçage prolongé (18).
  9. Appareil selon l'une des revendications 1 à 3,
    caractérisé en ce que, sur son côté tourné vers la semelle à pinçage prolongé (18), la plaque souple ou élastique (22) est pourvue de plusieurs barrettes (28) qui se suivent mutuellement dans la direction de circulation (L) dans la nappe et qui s'étendent respectivement en direction transversale, lesdites barrettes (28) pénétrant dans des fentes prévues dans la semelle à pinçage prolongé (18), dans lesquelles sont respectivement prévus des tuyaux gonflables (37) susceptibles d'être pilotés individuellement, pour un réglage variable de la largeur de pinçage (Bi) qui s'établit dans la direction de circulation (L) de la nappe et/ou pour imposer un profil de chargement librement choisi dans la direction de circulation (L) de la nappe.
  10. Appareil selon la revendication 9,
    caractérisé en ce que les tuyaux gonflables (37) sont agencés dans des évidements de guidage et de maintien de la semelle à pinçage prolongé (18), et la plaque souple ou élastique (22) est soutenue directement sur les tuyaux (37).
  11. Appareil selon l'une des revendications 1 à 3,
    caractérisé en ce que, entre la semelle à pinçage prolongé (18) et la plaque souple ou élastique (22), est agencé un profilé en élastomère (36) qui comporte plusieurs chambres à pression (243) qui se suivent mutuellement dans la direction de circulation (L) de la nappe et qui sont susceptibles d'être alimentées en fluide sous pression de façon correspondante en vue d'un réglage variable de la largeur de pinçage (Bi) qui s'établit dans la direction de circulation (L) de la nappe.
  12. Appareil selon l'une des revendications 1 à 3,
    caractérisé en ce que, entre la semelle à pinçage prolongé (18) et la plaque souple ou élastique (22), sont agencées plusieurs cames de réglage (244) qui se suivent mutuellement dans la direction de circulation (L) de la nappe, et en ce que la largeur de pinçage (Bi) qui s'établit dans la direction de circulation (L) de la nappe est réglable de façon variable via ces cames de réglage (244).
  13. Appareil selon l'une des revendications 1 à 3,
    caractérisé en ce que, entre la semelle à pinçage prolongé (18) et la plaque souple ou élastique (22), sont agencés plusieurs actionneurs (245) thermiques qui se suivent mutuellement dans la direction de circulation (L) de la nappe, et en ce que la largeur de pinçage (Bi) qui s'établit dans la direction de circulation (L) de la nappe est réglable de façon variable via ces actionneurs thermiques (245).
  14. Appareil selon la revendication 13,
    caractérisé en ce que les actionneurs thermiques (245) sont respectivement en un matériau thermoconducteur, et sont traversés par un fluide caloporteur, et en ce que la largeur de pinçage (Bi) qui s'établit dans la direction de circulation (L) de la nappe est réglable de façon variable par une variation correspondante de la température du fluide caloporteur.
  15. Appareil selon l'une des revendications précédentes,
    caractérisé en ce que les unités de pressage (26) peuvent être pilotées séparément et/ou par groupes.
  16. Appareil selon l'une des revendications précédentes,
    caractérisé en ce que l'unité à pinçage prolongé (10) est formée par un cylindre à pinçage prolongé avec une enveloppe de cylindre flexible (20) guidée au moyen de la plaque souple ou élastique (22).
  17. Appareil selon l'une des revendications précédentes,
    caractérisé en ce qu'il comprend au moins une calandre à pinçage prolongé.
EP20040018282 2003-08-07 2004-08-02 Dispositif de traitement d'une bande Expired - Fee Related EP1505202B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003136230 DE10336230A1 (de) 2003-08-07 2003-08-07 Vorrichtung zur Behandlung einer Materialbahn
DE10336230 2003-08-07

Publications (2)

Publication Number Publication Date
EP1505202A1 EP1505202A1 (fr) 2005-02-09
EP1505202B1 true EP1505202B1 (fr) 2009-01-28

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ID=33547131

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Application Number Title Priority Date Filing Date
EP04102679A Withdrawn EP1505204A1 (fr) 2003-08-07 2004-06-14 Dispositif de traitement d'une bande
EP20040018282 Expired - Fee Related EP1505202B1 (fr) 2003-08-07 2004-08-02 Dispositif de traitement d'une bande

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Application Number Title Priority Date Filing Date
EP04102679A Withdrawn EP1505204A1 (fr) 2003-08-07 2004-06-14 Dispositif de traitement d'une bande

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007060400B3 (de) * 2007-12-14 2009-05-28 Andritz Küsters Gmbh Vorrichtung zum Bilden eines Langspalts
DE102010030327A1 (de) * 2010-06-22 2011-12-22 Voith Patent Gmbh Bahnbehandlungsvorrichtung zum Glätten einer Faserstoffbahn
PL2808442T3 (pl) * 2013-05-29 2016-05-31 Andritz Kuesters Gmbh Urządzenie do tworzenia długiej szczeliny

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1704767C3 (de) * 1967-09-15 1978-06-22 Kabushiki Kaisha Ashihara Tekkosho, Kobe (Japan) Vorrichtung zum kontinuierlichen Pressen eines Bandes aus Kunststoff oder vulkanisierbarem Kautschuk
DD218918A1 (de) * 1982-12-14 1985-02-20 Freiberg Papier Maschwerke Vorrichtung zum anpressen eines umlaufenden bandes
FI71369C (fi) * 1983-03-23 1986-12-19 Valmet Oy Laongnyppress foer pappersmaskin
DE4103343A1 (de) * 1991-02-05 1992-08-06 Berstorff Gmbh Masch Hermann Vorrichtung zum kontinuierlichen pressen eines endlosen materialbandes
DE4425915A1 (de) * 1994-07-21 1996-02-01 Voith Sulzer Papiermasch Gmbh Langspalt-Presse
DE19544979B4 (de) * 1995-12-01 2006-08-03 Voith Paper Patent Gmbh Vorrichtung zum Komprimieren, Glätten und/oder Entwässern einer Faserstoffbahn
DE19607144A1 (de) * 1996-02-26 1997-08-28 Voith Sulzer Papiermasch Gmbh Preßvorrichtung
FI113788B (fi) * 1999-04-14 2004-06-15 Metso Paper Pori Oy Puristin

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Publication number Publication date
DE10336230A1 (de) 2005-03-03
EP1505204A1 (fr) 2005-02-09
DE502004008938D1 (de) 2009-03-19
EP1505202A1 (fr) 2005-02-09

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