EP1333121A1 - Calandre et procédé pour le fonctionnement d'une calandre - Google Patents

Calandre et procédé pour le fonctionnement d'une calandre Download PDF

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Publication number
EP1333121A1
EP1333121A1 EP03000903A EP03000903A EP1333121A1 EP 1333121 A1 EP1333121 A1 EP 1333121A1 EP 03000903 A EP03000903 A EP 03000903A EP 03000903 A EP03000903 A EP 03000903A EP 1333121 A1 EP1333121 A1 EP 1333121A1
Authority
EP
European Patent Office
Prior art keywords
jacket
roller
calender
mantle
over
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
EP03000903A
Other languages
German (de)
English (en)
Other versions
EP1333121B1 (fr
Inventor
Rüdiger Dr. Kurtz
Josef Schneid
Thomas Hermsen
Udo Gabbusch
Harald Hess
Rainer Fenske
Alexander Wassermann
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7713605&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1333121(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1333121A1 publication Critical patent/EP1333121A1/fr
Application granted granted Critical
Publication of EP1333121B1 publication Critical patent/EP1333121B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/006—Calenders; Smoothing apparatus with extended nips

Definitions

  • the invention relates to a calender with a heated Roller and a flexible jacket, which under the Effect of a pressure arrangement over a predetermined one Circumferential area bears against the roller, wherein between the Roller and the jacket a wide nip is formed. Further The invention relates to a method for operating a calender with a roller and a flexible one Mantle that you can form a wide nip over a predetermined circumferential section to the circumference of the Roller applies.
  • Such a calender is known from US 6 158 333 A.
  • the circumferential coat is also sometimes called Inscribed "shoe roller”.
  • the problem with such a calender is that Fact that the coat due to its constant deformation is heavily burdened.
  • the Jacket is made of a flexible plastic, possibly reinforced by reinforcing inserts, such as fibers or slivers.
  • the invention has for its object the burden to reduce the coat.
  • This task is performed on a calender of the type mentioned at the beginning Type solved in that the jacket in a work area, the between two axial edge areas is arranged, a greater thickness than in the edge areas has and in the work area radially over the Edge areas protrudes.
  • This configuration ensures that the edge areas can be kept away from the heated roller, without a corresponding deformation of the jacket is required.
  • the jacket lies in the edge areas So not on the hot counter roller, but the Edge areas are at a distance from the hot roller. This distance is defined by the size with which the coat in the work area over the edge areas survives. As it is only required in the work area with the help of the roller jacket to exert the material web between the roller and the jacket, the increased thickness is sufficient here. By the radial projection of the jacket in the work area beyond what can be seen below the deformation necessary for one revolution reduce.
  • each of the edge areas is in which the thickness of the jacket increases steadily. So you don't see a sudden step between the border areas and the work area, but the transition between the edge areas and the work area takes place in cross-section after a ramp or Curved line. This avoids that in the area of the transition defects arise that lead to premature could cause material fatigue.
  • the jacket preferably forms at least in the region of Pressure arrangement on its inside in the axial direction a straight.
  • the jacket is in the axial direction not deformed when placed on the roller. This means that a deformation and thus a load for the coat falls away.
  • the deformation in radial The direction remains the same, of course, because the Jacket in the area where it lies against the roller, must deform somewhat inwards in the radial direction, ie there is a deviation in cross-section from a circular line.
  • the jacket on its inside over the entire circumference in the axial direction is undeformed. So the coat stays with you Circulating its shape. The only deformation that is the radial indentation in the area by resting on the roller. Otherwise can he its shape, which correspond in cross section to a circular shape can maintain.
  • the jacket is preferably in the region of its axial Ends guided on support disks opposite the roller are radially displaceable. Through the radial shift the support disc can open the wide nip, without the need to change the shape of the jacket change if you refrain from opening up of the broad nip may change the shape of the Jacket in the area that forms the wide nip. Here it depends on the flexibility of the jacket whether the jacket remains on the pressure arrangement or tightens slightly.
  • the "backdrop management" has the Advantage that you have something when opening the wide nip is more flexible and above all slightly larger opening widths can achieve.
  • a carrier preferably penetrates the jacket in the axial direction and the support disks are in the press direction relocatable on the carrier.
  • the carrier thus supports the Discs on the one hand and guides them on the other. This can be achieved, for example, that the Beams in the area of the support washers has parallel to the direction of the press run. This is a relatively simple constructive one Solution to the overall coat when opening the wide nip to relocate.
  • a counter-shoe arrangement preferably acts on the Sheath, the direction of action of the direction of action of the pressure arrangement is opposite.
  • the counter shoe arrangement can be used, for example, to to shift the coat.
  • By the counter shoe arrangement can open a speed when opening the wide nip reach that goes beyond speed, that would be easily achieved by gravity.
  • the jacket can then also be positioned insert where an opening of the wide nip would not be possible with gravity alone, for example in an overhead position.
  • the pressure arrangement and the Counter shoe arrangement synchronized with each other. If the counter shoe arrangement extends, the pressure arrangement moves on. Inadmissible tensions on the jacket are thus avoided.
  • the task is in a method of the aforementioned Kind of solved by putting on the coat, without changing its shape in the axial direction.
  • the change in shape depends on the flexibility of the jacket. Overall, however, the shape of the jacket remains essentially received, i.e. it remains, apart from the zone of the broad nip, essentially circular in cross-section.
  • a calender 1 has a roller 2 which is not detailed, but generally known means is heated.
  • the roller 2 forms together with a flexible jacket 3 a shoe roller 4 a wide nip 5.
  • a pressure arrangement 6 the roller 2 pressed or pressed.
  • the pressure arrangement has a pressure shoe 7, the opposite a carrier 8 passing through the shoe roller 4 hydraulic cylinder 9 is supported, with the help the required contact pressure on the shoe 7 on the Coat 3 can be exercised.
  • a material web for example a paper or cardboard, satined, with the on the roller 2 adjacent side is smoothed.
  • the web of material is not shown here.
  • the pressure shoe 7 has a pressure surface 10, the Curvature of the curvature of the roller 2 is adapted.
  • the Pressure surface 10 are lubrication devices, not shown provided, for example in the form of a hydrostatic lubrication so that the jacket 3 be guided with low friction over the pressure shoe 7 can.
  • the jacket 3 has a working area A, which with the roller 2 cooperates, and in the area of its axial Ends two edge areas R, being between the work area A and the edge areas R transition areas U are arranged.
  • the jacket 3 points in the work area A has a greater thickness than in the edge areas R.
  • the border areas R are here for clarification shown exaggeratedly large.
  • work area A stands the jacket in the radial direction over the edge areas R about. This makes it possible that also in the area of Wide nips 5 the inside of the jacket 3 on a straight Can keep line in the axial direction. You can even the coat 3 practically over the entire circulation leave unchanged form, i.e. it's not necessary, the jacket 3 in the area of the wide nip 5 in the area flaring its axial ends like this from is known in the art.
  • the jacket 3 is in the region of its axial ends Support discs 11 stored.
  • Fig. 3 shows an end view such a support disc 11.
  • the support disc 11 has an elongated opening 12 with parallel Guide walls 13 on a corresponding Flattening 14 are guided on the carrier 8. Accordingly it is possible to support 11 in the direction of Double arrow 15 to move. With such a movement the jacket 3 is removed from the roller 2 in total or approximated to it, i.e. all areas of the Sheath 3 are in relation to the same distance the roller 2 shifted. Even if the Wide nips 5 is therefore a change in shape of the jacket 3 not mandatory. It depends on the flexibility of the jacket 3 possible that the jacket 3 when opening the wide nip 5 a little of the printing area 10 takes off. Otherwise, its shape remains unchanged.
  • the pressure arrangement 6 To accelerate the opening of the wide nip 5 is on the side of the pressure arrangement 6 opposite the Carrier 8 provided a counter shoe arrangement 16, the also has hydraulic cylinders 17 with which a counter shoe 18 can be pressed against the jacket 3 can, i.e. radially outwards.
  • the cylinders 9 of the pressure arrangement 6 and the cylinders 17 of the counter-shoe arrangement 16 are synchronized with one another, i.e. when the cylinders 9 retract, drive the cylinders 17 and vice versa. This will make it illegal Tensions on the jacket 3 avoided.
  • the counter shoe assembly 16 comes with fewer cylinders 17 as the pressure arrangement 6.
  • the counter shoe arrangement is not primarily intended to be higher Exerting pressure, but mainly serves to to support a shifting movement of the casing 3.

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  • Paper (AREA)
EP20030000903 2002-02-02 2003-01-16 Calandre et procédé pour le fonctionnement d'une calandre Expired - Fee Related EP1333121B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10204286 2002-02-02
DE2002104286 DE10204286B4 (de) 2002-02-02 2002-02-02 Kalander und Verfahren zum Betreiben eines Kalanders

Publications (2)

Publication Number Publication Date
EP1333121A1 true EP1333121A1 (fr) 2003-08-06
EP1333121B1 EP1333121B1 (fr) 2006-06-21

Family

ID=7713605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030000903 Expired - Fee Related EP1333121B1 (fr) 2002-02-02 2003-01-16 Calandre et procédé pour le fonctionnement d'une calandre

Country Status (2)

Country Link
EP (1) EP1333121B1 (fr)
DE (2) DE10204286B4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1609907A1 (fr) * 2004-06-22 2005-12-28 Voith Paper Patent GmbH Calandre à pincage prolongée et procédé de satinage d' une bande de matériau
EP1634994A1 (fr) * 2004-09-14 2006-03-15 Voith Paper Patent GmbH Calandre
EP2420617A1 (fr) * 2010-08-17 2012-02-22 Voith Patent GmbH Calendre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19607476C1 (de) * 1996-02-28 1997-04-10 Voith Sulzer Finishing Gmbh Verfahren zum Satinieren von Papier und Kalander zur Durchführung des Verfahrens
EP0978588A2 (fr) * 1998-08-06 2000-02-09 Ichikawa Co.,Ltd. Bande pour la fabrication du papier
US6158333A (en) * 1998-12-16 2000-12-12 Valmet Corporation Method and apparatus for calendering paper
WO2001075225A1 (fr) * 2000-04-05 2001-10-11 Metso Paper, Inc. Procede de prevention d'endommagements d'une courroie a revetement de polymere dans une calandre, et calandre y relative

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4401580A1 (de) * 1994-01-20 1994-06-01 Voith Gmbh J M Langspaltpresse zum Auspressen einer laufenden Bahn, insbesondere einer Papierbahn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19607476C1 (de) * 1996-02-28 1997-04-10 Voith Sulzer Finishing Gmbh Verfahren zum Satinieren von Papier und Kalander zur Durchführung des Verfahrens
EP0978588A2 (fr) * 1998-08-06 2000-02-09 Ichikawa Co.,Ltd. Bande pour la fabrication du papier
US6158333A (en) * 1998-12-16 2000-12-12 Valmet Corporation Method and apparatus for calendering paper
WO2001075225A1 (fr) * 2000-04-05 2001-10-11 Metso Paper, Inc. Procede de prevention d'endommagements d'une courroie a revetement de polymere dans une calandre, et calandre y relative

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1609907A1 (fr) * 2004-06-22 2005-12-28 Voith Paper Patent GmbH Calandre à pincage prolongée et procédé de satinage d' une bande de matériau
EP1634994A1 (fr) * 2004-09-14 2006-03-15 Voith Paper Patent GmbH Calandre
US7287974B2 (en) 2004-09-14 2007-10-30 Voith Paper Patent Gmbh Calender arrangement
EP2420617A1 (fr) * 2010-08-17 2012-02-22 Voith Patent GmbH Calendre

Also Published As

Publication number Publication date
DE50303891D1 (de) 2006-08-03
EP1333121B1 (fr) 2006-06-21
DE10204286A1 (de) 2003-08-14
DE10204286B4 (de) 2006-02-02

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