EP0227302A1 - Moyens de contrôle de la déflexion d'un rouleau - Google Patents

Moyens de contrôle de la déflexion d'un rouleau Download PDF

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Publication number
EP0227302A1
EP0227302A1 EP86309081A EP86309081A EP0227302A1 EP 0227302 A1 EP0227302 A1 EP 0227302A1 EP 86309081 A EP86309081 A EP 86309081A EP 86309081 A EP86309081 A EP 86309081A EP 0227302 A1 EP0227302 A1 EP 0227302A1
Authority
EP
European Patent Office
Prior art keywords
calender
mangle
roll
shell
bearings
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Withdrawn
Application number
EP86309081A
Other languages
German (de)
English (en)
Inventor
David Edward Pepler Sir J.F. Norton & Co. Norton
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.)
Sir James Farmer Norton & Co (international) Ltd
Sir James Farmer Norton and Co Ltd
Original Assignee
Sir James Farmer Norton & Co (international) Ltd
Sir James Farmer Norton and Co Ltd
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
Application filed by Sir James Farmer Norton & Co (international) Ltd, Sir James Farmer Norton and Co Ltd filed Critical Sir James Farmer Norton & Co (international) Ltd
Publication of EP0227302A1 publication Critical patent/EP0227302A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D21F3/06—Means for regulating the pressure
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/002—Opening or closing mechanisms; Regulating the pressure
    • D21G1/0026—Arrangements for maintaining uniform nip conditions
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0206—Controlled deflection rolls

Definitions

  • This invention relates to a means for controlling and/or preventing the deflection of a roll or series of rolls as used, for example, in calenders or mangles in the processing of textiles or paper.
  • the rolls are constructed of a tubular shell rotating around a non-rotating fixed centre or beam which runs through the centre of the rotating shell and in such systems the pressure is applied to the internal surface of the tubular shell by a particular means using the stationary centre or beam as a support for the pressure applying means.
  • the pressure is applied to the outer shell in the direction in which the roll is required to press on to the fabric or paper.
  • the pressure is applied by hydraulic fluid under pressure with the fluid being restrained from passing to the unloaded side of the stationary centre or beam by longitudinal seals.
  • a series of hydraulically loaded pistons are fitted in the stationary centre or beam to apply pressure through bearing shoes in contact with the internal circumference of the rotating shell.
  • a calender or mangle means for controlling and/or preventing deflection of at least one roll of the calender or mangle, which roll comprises a centre or beam, preferably stationary, and a rotatable tubular shell, the means being characterised by comprising four bearings whereof two are mounted, axially-spaced, on the stationary centre or beam between the latter and the rotating tubular shell within the working width of the latter, while the other two are located between the ends of the rotating shell and the calender or mangle supporting frame.
  • the two inner bearings are each disposed at a location which is one third of the total shell width in from the respective shell end.
  • the end bearings are preferably mounted on hollow journals bolted to, or forming part of, the shell ends.
  • the roll shells of the calender are constructed alternately of steel and polyamide or other thermoplastics material, and when the steel shells are heated. Deliberately cambering the roll in this way is useful when a narrow fabric is to be processed on a wide calender and damage to the polyamide roll due to the temperature of the steel roll outside the working width of the cloth is to be avoided.
  • the present invention as a substantial proportion of the pressure is applied through the roll centres or beams, it is convenient to apply the load by pulling the ends of adjacent stationary centres or beams together by hydraulic or other means and, if the pressure is applied in this manner, the total load on the support framework of the calender or mangle is substantially reduced.
  • a modification of the present invention which is convenient on calenders which have to rotate at a slow speed and which also require the rolls heating to such a temperature that the internal bearings cannot easily be lubricated, is to arrange for the centre or beam, which passes through the tubular shell, to be mounted on spherical seatings inside the shell, which seatings are fitted with locating means which cause the centre to rotate with the shell. At slow speeds, the flexure of the centre is permissible without excessive fatigue loading.
  • a calender or mangle l0 comprises a framework generally indicated at ll supporting two rolls l2 forming a nip therebetween.
  • Each roll l2 comprises a stationary centre or beam l3 extending through a rotatable tubular steel shell l4.
  • the shell l4 is supported by four bearings, two indicated at l5 within the working width of the shell l4 and two indicated at l6 at the ends of the shell l4.
  • Each bearing l5 is positioned in from its respective end of the shell l4, a distance which is ideally but not essentially, one third of the total width of the shell l4 with the advantages obtained as hereinbefore mentioned.
  • the end bearings l6 of the lower roll l2 are loaded by hydraulic cylinders l8.
  • Each stationary centre or beam l3 is supported at each of its ends outboard of the framework ll in a spherical plain bearing l9, and these bearings l9 of the adjacent rolls l2 are interconnected at each end by a hydraulic camber control cylinder 20 which applies load by pulling the ends of the centres or beams l3 together with the consequent advantage mentioned above.
  • hydraulic camber control means i.e. cylinder 20
  • the hydraulic camber control means may, on occasion, be applied to the ends of a centre l3 of only one roll l2.
  • the calender or mangle driving gear is indicated at 2l and is keyed onto one of the hollow journals l7.
  • the centres or beams l3A are rotatable
  • the inner bearings 22 are spherical plain bearings
  • the bearings 23 for the ends of the rotatable centres or beams l3A are spherical roller bearings
  • a flexible coupling 24 is provided between the hollow journal l7A mounting the driving gear 2lA and the associated rotatable centre or beam l3A.
  • the means for controlling and/or preventing deflection of a calender roll according to this invention is applicable both to rolls manufactured with a parallel face and to rolls which have been preformed. In the latter case, negative loading of the inner bearings l5 or 22 is applied to correct the roll shape at low total loads while positive loading of the inner bearings l5 or 22 is applied for high total loads. As a result, the range of loads permissible is a given calender design is extended, and greater flexibility in deflection control and/or prevention is achieved.

Landscapes

  • Paper (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP86309081A 1985-11-21 1986-11-20 Moyens de contrôle de la déflexion d'un rouleau Withdrawn EP0227302A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8528658 1985-11-21
GB858528658A GB8528658D0 (en) 1985-11-21 1985-11-21 Roll deflection control means

Publications (1)

Publication Number Publication Date
EP0227302A1 true EP0227302A1 (fr) 1987-07-01

Family

ID=10588550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86309081A Withdrawn EP0227302A1 (fr) 1985-11-21 1986-11-20 Moyens de contrôle de la déflexion d'un rouleau

Country Status (2)

Country Link
EP (1) EP0227302A1 (fr)
GB (1) GB8528658D0 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999059787A1 (fr) * 1998-05-20 1999-11-25 Eduard Küsters Maschinenfabrik GmbH & Co. KG Procede et installation pour ameliorer les caracteristiques d'utilisation de materiaux sous forme de panneaux
AT411450B (de) * 1997-10-21 2004-01-26 Berndorf Band Ges M B H Vorrichtung zum kontinuierlichen herstellen von flächigen materialbahnen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161125A (en) * 1961-02-15 1964-12-15 Beloit Iron Works Adjustable crown roll
FR2367851A1 (fr) * 1976-10-18 1978-05-12 Artos Meier Windhorst Kg Dispositif pour la regulation de la force de pressage dans les systemes de rouleaux exprimeurs
DE2832457A1 (de) * 1978-07-24 1980-02-14 Koller Rudolf Walzenpaar zum auswalzen plastischer werkstoffe und zum bearbeiten von bahnfoermigen produkten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161125A (en) * 1961-02-15 1964-12-15 Beloit Iron Works Adjustable crown roll
FR2367851A1 (fr) * 1976-10-18 1978-05-12 Artos Meier Windhorst Kg Dispositif pour la regulation de la force de pressage dans les systemes de rouleaux exprimeurs
DE2832457A1 (de) * 1978-07-24 1980-02-14 Koller Rudolf Walzenpaar zum auswalzen plastischer werkstoffe und zum bearbeiten von bahnfoermigen produkten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT411450B (de) * 1997-10-21 2004-01-26 Berndorf Band Ges M B H Vorrichtung zum kontinuierlichen herstellen von flächigen materialbahnen
WO1999059787A1 (fr) * 1998-05-20 1999-11-25 Eduard Küsters Maschinenfabrik GmbH & Co. KG Procede et installation pour ameliorer les caracteristiques d'utilisation de materiaux sous forme de panneaux

Also Published As

Publication number Publication date
GB8528658D0 (en) 1985-12-24

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Designated state(s): CH DE ES FR GB IT LI NL

17P Request for examination filed

Effective date: 19871230

17Q First examination report despatched

Effective date: 19890531

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19891210

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NORTON, DAVID EDWARD PEPLERSIR J.F. NORTON & CO.