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EP0889991B1 - Cylindre de calandrage chauffant - Google Patents

Cylindre de calandrage chauffant Download PDF

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Publication number
EP0889991B1
EP0889991B1 EP97922821A EP97922821A EP0889991B1 EP 0889991 B1 EP0889991 B1 EP 0889991B1 EP 97922821 A EP97922821 A EP 97922821A EP 97922821 A EP97922821 A EP 97922821A EP 0889991 B1 EP0889991 B1 EP 0889991B1
Authority
EP
European Patent Office
Prior art keywords
hose
carrier
heating
roll according
calendering roll
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 - Lifetime
Application number
EP97922821A
Other languages
German (de)
English (en)
Other versions
EP0889991A1 (fr
Inventor
Jost Henning Müller
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.)
Walzen Irle GmbH
Original Assignee
Walzen Irle 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
Application filed by Walzen Irle GmbH filed Critical Walzen Irle GmbH
Publication of EP0889991A1 publication Critical patent/EP0889991A1/fr
Application granted granted Critical
Publication of EP0889991B1 publication Critical patent/EP0889991B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/022—Heating the cylinders
    • D21F5/024—Heating the cylinders using electrical means
    • 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
    • D21G1/0253—Heating or cooling the rolls; Regulating the temperature
    • D21G1/028—Heating or cooling the rolls; Regulating the temperature using electrical means

Definitions

  • the invention relates to a heatable calender roll with several heating channels running in the longitudinal direction of the roller body and with one or more inside the heating channels provided, rotating the heating ducts, in rotating Condition of the roller with a power source directly or inductively connectable heaters.
  • Such electrically heated calender rolls are, for example from the magazine "The electrical equipment” No. 2, 04/20/66, pages 40 to 44 known. In this release Rollers are mentioned in which peripheral bores by means of Cartridges are heated electrically. The temperature control takes place by means of water cooling in a central bore.
  • the heating wires can be made of silicone be poured in.
  • the heat is transferred by means of a fluid heat transfer medium, preferably with the help of a thermal oil heated in a heat exchanger, the introduced into the rotating roller via rotary seals becomes.
  • a uniform heating is when using thermal oil as a heat transfer medium, however, often not to be achieved, since this more or more during the flow through the heating channels cools less and thus the heat transfer at the end a corresponding heating channel is lower. It can therefore to different thermal expansion in different Areas come so that thickness variations of the rolling stock may occur.
  • thermal oil is also problematic because because this is at normal operating temperatures Crack up to around 300 ° C in the course of the operating time can, so that the thermal conductivity decreases.
  • the invention has for its object an electrical heatable calender roll to create a good heat transfer between the heating elements and the inner wall the peripheral bores is given without the rollers at Operation will be affected in its dimensional accuracy.
  • Heaters on or in a hose-like support made of soft elastic Plastic, in particular from a polyorganosiloxane compound, are arranged so that they are under radial Expansion together with the tube-like carrier to the inner peripheral surfaces of the heating channels can be created.
  • the calender roll according to the invention can with the help of the Heating channels pulling electrical heaters or the tubular support for the heaters extraordinary be heated evenly since the electric heating elements become equally warm at every point of the heating duct. Thereby can be an extremely precise roller profile or a corresponding precise nip can be set.
  • the heating elements are applied using a Plastic hose, preferably made of a polyorganosiloxane compound exists and one opposite the heating duct has a smaller cross-section.
  • a hose made of this soft elastic Plastic can easily enter the heating ducts be introduced, so that the retrofitting of previously with Thermal oil heated calender rolling mills is possible.
  • the outer peripheral surface of the Carrier hose by pressurizing the inner Circumferential surface of the heating channels pressed. For example by vulcanizing or gluing the polyorganosiloxane compound done with the metal surface.
  • a pressure relief valve is installed on at least one side is used to operate at too high temperatures Roll an impermissible excess pressure inside the heating channels or to prevent the carrier hose safely.
  • the pressure medium can also be used such as nitrogen.
  • a polyorganosiloxane compound for the production of the carrier hose is preferably a fluorosilicone or a silicone rubber used. These types of silicone are temperature resistant up to approx. 300 ° C, are permanently elastic, resistant to aging and insensitive to chemicals. Besides, is the production of such hoses using an extrusion process comparatively unproblematic, the electrical heating already in the hose production in the Hose wall can be extruded.
  • the electrical is Heating preferably as a radially flexible spiral wire or radially compliant wire mesh, the via a direct electrical connection or inductively heated can be.
  • the heating wire preferably has an insulation coating on so that, for example, at a electric resistance heating, an extended heating section results.
  • the electrical Heating conductor in the hose wall, this can also on the Glued on the inside or outside or otherwise attached his. It is preferably also possible to remove the carrier tube an inner tube of smaller diameter and an outer tube manufacture larger diameter, the electrical Heating is arranged between the two hoses.
  • An adhesive can then also be provided between the two hoses be so that a very good heat transfer is guaranteed is.
  • the heating conductor is designed as an electrical resistance heater this is preferably with slip rings the corresponding power supply.
  • a coil to provide the electrical heating inductively heated, but with this heating method the electrostatic charge of the rolling material is respected must become.
  • the temperature control of the roll surface is in the invention Calender roller comparatively simply because of this possible that thermocouples or thermocouples on the carrier hose are provided, the legs for controlling the heating current can in turn be tapped via sliding contacts.
  • the drawing figure shows a section through the outer Jacket 1 of a heatable calender roll.
  • a heating channel 3 into which a carrier hose 4 is introduced, in the wall 5 a spiral Heating wire 6 is extruded.
  • the carrier tube 4 is pressure-tight closed while its rear end 8 in a pressure sleeve 9 extends through the compressed air into the interior 10 of the carrier hose 4 can be directed so that it inflates and tight against the inner wall 11 of the heating duct 3 creates and glued to it.
  • the pressure sleeve 9 can alternatively pressure-tight with the help of a pressure relief valve, not shown be closed while contacting the heating wire 6 via slip rings, also not shown.

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Claims (11)

  1. Cylindre de calandre pouvant être chauffé présentant plusieurs canaux de chauffage, s'étendant dans le sens longitudinal du corps du cylindre, et un ou plusieurs chauffages (6) prévus à l'intérieur des canaux de chauffage, traversant les canaux de chauffage (3) et pouvant être reliés, lorsque le cylindre tourne, directement ou par induction à une source de courant, caractérisé en ce que les chauffages (6) sont disposés sur ou dans un support (4) en forme de flexible en matière synthétique souple, en particulier constitué par un composé polyorganosiloxane, de telle manière qu'ils peuvent être placés, sous l'effet d'un élargissement radial, avec le support (4) en forme de flexible, contre les surfaces périphériques (11) intérieures des canaux de chauffage.
  2. Cylindre de calandre selon la revendication 1, caractérisé en ce que la surface périphérique extérieure du flexible support (4) est reliée à la surface périphérique intérieure (11) des canaux de chauffage (3) par vulcanisation sur celle-ci ou par collage.
  3. Cylindre de calandre selon la revendication 1 ou 2, caractérisé en ce que le flexible support (4) peut être alimenté en gaz sous pression, en particulier en air comprimé.
  4. Cylindre de calandre selon une quelconque des revendications 1 à 3, caractérisé en ce qu'on utilise un fluorosilicone ou un caoutchouc de silicone comme polyorganosiloxane.
  5. Cylindre de calandre selon une quelconque des revendications 1 à 4, caractérisé en ce que le chauffage électrique (6) est exécuté sous forme d'un fil spiralé radialement élastique ou une tresse de fils, qui est extrudé dans la paroi (5) du flexible support (4).
  6. Cylindre de calandre selon une quelconque des revendications 1 à 5, caractérisé en ce que le fil chauffant (6) présente un revêtement isolant.
  7. Cylindre de calandre selon une quelconque des revendications 1 à 6, caractérisé en ce qu'on a prévu deux flexibles support (4) s'étendant environ jusqu'au milieu du cylindre.
  8. Cylindre de calandre selon une quelconque des revendications 1 à 7, caractérisé en ce que le flexible support (4) est constitué par un flexible intérieur d'un petit diamètre et par un flexible extérieur d'un diamètre plus grand, le chauffage électrique (6) étant disposé entre le flexible intérieur et le flexible extérieur.
  9. Cylindre de calandre selon la revendication 8, caractérisé en ce que les flexibles sont collés l'un à l'autre.
  10. Cylindre de calandre selon une quelconque des revendications 1 à 9, caractérisé en ce que le chauffage est exécuté sous forme d'un chauffage par induction.
  11. Cylindre de calandre selon une quelconque des revendications 1 à 10, caractérisé en ce qu'on a prévu, sur la face extérieure du flexible support, des capteurs thermiques pour la commande du courant de chauffage du chauffage électrique.
EP97922821A 1996-03-28 1997-03-27 Cylindre de calandrage chauffant Expired - Lifetime EP0889991B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19612324A DE19612324C1 (de) 1996-03-28 1996-03-28 Beheizbare Kalanderwalze
DE19612324 1996-03-28
PCT/DE1997/000633 WO1997037077A1 (fr) 1996-03-28 1997-03-27 Cylindre de calandrage chauffant

Publications (2)

Publication Number Publication Date
EP0889991A1 EP0889991A1 (fr) 1999-01-13
EP0889991B1 true EP0889991B1 (fr) 2000-02-09

Family

ID=7789717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97922821A Expired - Lifetime EP0889991B1 (fr) 1996-03-28 1997-03-27 Cylindre de calandrage chauffant

Country Status (3)

Country Link
EP (1) EP0889991B1 (fr)
DE (2) DE19612324C1 (fr)
WO (1) WO1997037077A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104342801A (zh) * 2013-08-05 2015-02-11 T-马克有限公司 用于纱线热处理的封闭式接触加热器组件

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9907150D0 (en) * 1999-03-29 1999-05-19 Racster Nicholas A method of making a body having a temperature controllable outer surface
DE102008019720A1 (de) * 2008-04-18 2009-10-22 Leonhard Kurz Stiftung & Co. Kg Beheizte Prägewalze
CN114951286B (zh) * 2022-06-30 2024-08-27 马鞍山欧凯新材料科技有限公司 一种电子铝箔用花纹轧辊

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185816A (en) * 1963-08-30 1965-05-25 Du Pont Temperature controlled device
DE3033689A1 (de) * 1980-09-08 1982-04-22 Maschinenfabrik Ludwig Rümmer, 8602 Bischberg Elektrisch beheizbare walze
DE59300659D1 (de) * 1992-06-22 1995-11-02 Walzen Irle Gmbh Elektrisch beheizbare Kalanderwalze.
DE29615219U1 (de) * 1996-08-31 1996-11-14 Walzen Irle GmbH, 57250 Netphen Elektrisch beheizbare Kalanderwalze

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104342801A (zh) * 2013-08-05 2015-02-11 T-马克有限公司 用于纱线热处理的封闭式接触加热器组件

Also Published As

Publication number Publication date
DE19612324C1 (de) 1997-06-05
WO1997037077A1 (fr) 1997-10-09
DE59701114D1 (de) 2000-03-16
EP0889991A1 (fr) 1999-01-13

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