EP0672606B1 - Bobine de feuille de métal, procédé pour sa production et dispositif de mise en oeuvre du procédé - Google Patents

Bobine de feuille de métal, procédé pour sa production et dispositif de mise en oeuvre du procédé Download PDF

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Publication number
EP0672606B1
EP0672606B1 EP95102123A EP95102123A EP0672606B1 EP 0672606 B1 EP0672606 B1 EP 0672606B1 EP 95102123 A EP95102123 A EP 95102123A EP 95102123 A EP95102123 A EP 95102123A EP 0672606 B1 EP0672606 B1 EP 0672606B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
metal foil
wall
winding
chambers
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
EP95102123A
Other languages
German (de)
English (en)
Other versions
EP0672606A1 (fr
Inventor
Stefan Dr. Kästner
Ulrich Hampel
Josef Pakula
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.)
Vereinigte Aluminium Werke AG
Vaw Aluminium AG
Original Assignee
Vereinigte Aluminium Werke AG
Vaw Aluminium AG
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Filing date
Publication date
Application filed by Vereinigte Aluminium Werke AG, Vaw Aluminium AG filed Critical Vereinigte Aluminium Werke AG
Publication of EP0672606A1 publication Critical patent/EP0672606A1/fr
Application granted granted Critical
Publication of EP0672606B1 publication Critical patent/EP0672606B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/28—Drums or other coil-holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes

Definitions

  • the invention relates to a metal foil bundle, consisting of a winding sleeve, the inside diameter of which corresponds to the outside diameter of a sleeve receiver, the winding sleeve being designed as a hollow chamber shaft with at least two chambers arranged between the outer and inner walls of the sleeve, and the outer wall or the inner wall of the hollow chamber shaft in the central region has an increased wall thickness with a wall thickness transition zone, and further consists of a metal foil wound into a bundle.
  • a metal foil bundle of the type mentioned at the outset is known from EP-A-500515.
  • Conical surfaces are arranged in the wall thickness transition zone.
  • So-called linkage elements are positioned above it, which consist of two rings and an intermediate connecting element made of elastic material.
  • Tubes in particular steel tubes with an inner diameter of 150 mm and a wall thickness of 6 mm, are usually used for winding aluminum foils. Small quantities under 1000 kg can only be obtained from the film manufacturer in exceptional cases, since film production is a rationalized production.
  • the cold-rolled strips After the cold-rolled strips have been processed into aluminum foils, they are wound up and subjected to an annealing treatment.
  • the metal foil bundles are transported with corresponding sleeve receivers via various transport devices between scissors, annealing furnaces and the shipping point.
  • the risk of tearing is particularly critical in the case of aluminum foils made of pure aluminum with purity Al 99 to Al 99.5, since these are processed in the "soft" state. It is known that films of this composition have very low tensile strength and elongation values.
  • the object of the present invention is to increase the stability of a metal foil bundle, so that foil tearing can be avoided even at high winding and unwinding speeds and with an increased number of linear meters. Furthermore, the winding tube should remain dimensionally stable even when subjected to changes in temperature (400 ° C / 10 t load).
  • the vibration-damping effect of the hollow chamber shaft according to the invention is further enhanced by the fact that the chamber volume contains no internals in the radial direction and has support disks distributed only over the length of the winding tube. It has been shown that at very high speeds the tendency to imbalance or bulge of the outer sleeve in the central region is particularly pronounced, so that a correspondingly dimensioned counterforce must be applied here. It is envisaged that the outer chamber volumes are larger than the volume of the inner chamber seen over the longitudinal axis of the winding tube.
  • the outer wall of the hollow chamber shaft has an increased wall thickness in the central region.
  • step-shaped shoulders are worked in to accommodate appropriately dimensioned support disks.
  • the heels are designed as shrink fit, so that the support disks are inserted in excess after heating the outer sleeve and then shrunk when the outer wall cools down.
  • the winding tube has, for example, an outer core diameter of 30 cm and an inner core diameter of 15 cm with a total length of 180 cm. A film with a thickness of 6 ⁇ m and a width of 160 cm can be wound onto this sleeve.
  • the winding tube according to the invention enables a film length of 64 km to be wound up, which leads to a winding diameter of the wound film of approximately 80 to 90 cm.
  • the wound foil is subjected to an annealing process in which the metal foil bundle is brought from room temperature to a temperature of 360 ° C. within a few hours and is held there for several days. This temperature treatment serves to thermally temper the film material.
  • the thermal treatment creates a high thermal load on the winding tube, which is held at both ends under a weight load of approx. 10 t.
  • deformations can occur on the winding tube during the annealing process. These not only result from the load on the film winding, but also from the thermal expansion, stresses occur inside the winding tube.
  • the inner wall should be brought to a smaller diameter by cooling so that the support disks can be pushed on and then shrunk on with a slow increase in temperature.
  • the inner diameter of the winding tube lies in a range between 100 and 200 mm and the metal foil wound on the outer diameter has a thickness of 0.0045 to 0.06 mm corresponding to 4.5 to 60 ⁇ m.
  • the outside diameter of the bundle is between 500 and 1000 mm with a bundle width of 800 to 2020 mm, which results in a total weight of approx. 10,000 kg when fully wound.
  • a metal foil bundle consists of a hollow chamber shaft with at least one hollow chamber arranged between the outer and inner walls. This increases the rigidity of the winding tube, and the formation of 3 chambers has proven to be particularly favorable.
  • the two outer chambers are designed with a smaller wall thickness than the middle chamber.
  • the aluminum foil 7 is wound up in such a way that the side edges protrude beyond the transverse walls of the middle chamber. With this arrangement there is a favorable compromise between the stability of the hollow chamber shaft, low weight of the winding tube and favorable vibration behavior.
  • the winding tube according to the invention is shown as a hollow shaft. Between the outer tube 1 and the inner tube 2 there is the hollow chamber 3, which is divided by a plurality of transverse walls 4a, b. Annular flange surfaces 5, 6 are arranged at the front ends.
  • the winding tube according to the invention is shown enlarged as a partial cross section.
  • a transverse wall 4b and the annular flange part 6 can be seen between the outer tube 1 and the inner tube 2.
  • the outer tube 1 can be formed with a graduated wall thickness, the thin end being arranged towards the end face and the thicker middle part between the transverse walls 4a, 4b.
  • the stepped outer wall 1 in the central region I is approximately 2 times thicker than the thickness of the inner tube 2. This has the advantage that the deflection of the outer shaft is reduced due to the weight of the metal foil bundle. In addition, the dynamic rigidity when winding and unwinding the film is improved.
  • the transverse wall 4b shrunk in the outer wall 1 is additionally provided with a weld seam secured.
  • T the tolerance compensation
  • the metal foil bundle according to the invention consisting of a winding tube with outer tube 1 and inner tube 2 is shown.
  • the aluminum foil 7 is arranged on the outer tube 1 in a multiplicity of thin layers.
  • sleeve spacings H 75 - 120 mm are selected. At a given peripheral speed, the speeds can be halved compared to an outer diameter of 150 mm.
  • the hollow chamber shaft should not contain any internals in the radial direction.
  • Each chamber is delimited by the outer cylinder which is formed by the outer wall 1 and by an inner cylinder which is formed by the inner wall 2. This enables the thermal expansion of the material to take place unhindered in the radial direction when it is heated to approximately 360 ° without local deformations occurring.
  • the surface pressure exerted on the winding tube from the wound film is particularly critical. With a thickness of 6 ⁇ m, unbalance or vibrations of the winding tube create tension in the film web, which can exceed the maximum strength. Then cracks or other partially invisible damage occur, which are later recognized when the foil is unwound and then lead to a rejection of the entire metal foil bundle.
  • the change in the metal foil bundle can be improved by increasing the sleeve diameter.
  • the inventive dimensioning of the outer diameter to 1.5 to 2.5 times the inner diameter of the sleeve ensures that the surface pressure when starting the film bundle can be kept low and thus damage to the film, which can later lead to a crack , be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Laminated Bodies (AREA)
  • Press Drives And Press Lines (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Claims (3)

  1. Bobine de feuille métallique constituée d'une douille d'enroulement, dont le diamètre intérieur correspond au diamètre extérieur d'un support à douille, la douille d'enroulement étant réalisée sous forme d'arbre à chambres creuses, comportant au moins deux chambres (3) disposées entre la paroi extérieure et la paroi intérieure (1, 2) de la douille et la paroi extérieure (1) ou la paroi intérieure (2) de l'arbre à chambres creuses présentant, dans la zone médiane, une épaisseur de paroi augmentée, avec une zone de transition d'épaisseur de paroi, et étant en outre constituée d'une feuille métallique enroulée pour former une bobine,
    caractérisée en ce que
    dans la zone de transition d'épaisseur de paroi est creusé un décrochement avec un siège de retrait dans lequel est respectivement fretté par rétraction un disque annulaire (4a, b), ces disques obturant une chambre intérieure, entre la paroi extérieure et la paroi intérieure (1, 2), et en ce que, à chaque extrémité frontale de l'arbre à chambres creuses, est respectivement disposée une partie de bride (5, 6) à forme annulaire, reliée rigidement à la paroi extérieure et à la paroi intérieure (1, 2), et constituant alors deux chambres extérieures.
  2. Bobine de feuille métallique selon la revendication 1,
    caractérisée en ce que
    les volumes de chambre extérieurs, constitués entre les parties de bride (5, 6) à forme annulaire extérieures et les disques annulaires (4a, b) intérieurs, sont supérieurs au volume de la chambre intérieure, vue dans l'axe longitudinal de la douille d'enroulement.
  3. Bobine de feuille métallique selon l'une des revendications précédentes,
    caractérisée en ce que
    la douille d'enroulement est réalisée sous forme d'arbre à chambres creuses avec des chambres disposées entre la paroi extérieure et la paroi intérieure (1, 2) de la douille, le diamètre extérieur Da de la douille étant de 1,5 à 2,5 fois le diamètre intérieur Di de la douille,
    en ce que l'espacement A entre la paroi intérieure et la paroi extérieure de la douille d'enroulement est proportionnel au diamètre intérieur de la douille d'enroulement, le rapport valant A = (0,3 à 1,5) x Di
    Figure imgb0005
    ,
    en ce que les chambres sont délimitées dans l'axe longitudinal de la douille par plusieurs disques annulaires subdivisant l'arbre de chambre creuse en une pluralité de chambres annulaires, et
    en ce que les parties de bride (5, 6) à forme annulaire situées extérieurement assurent une étanchéité complète des faces latérales de la bobine de feuille métallique.
EP95102123A 1994-03-19 1995-02-16 Bobine de feuille de métal, procédé pour sa production et dispositif de mise en oeuvre du procédé Expired - Lifetime EP0672606B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9404689U DE9404689U1 (de) 1994-03-19 1994-03-19 Metallfolienbund und Aufwickelhülse hierfür
DE9404689U 1994-03-19

Publications (2)

Publication Number Publication Date
EP0672606A1 EP0672606A1 (fr) 1995-09-20
EP0672606B1 true EP0672606B1 (fr) 1997-01-22

Family

ID=6906238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95102123A Expired - Lifetime EP0672606B1 (fr) 1994-03-19 1995-02-16 Bobine de feuille de métal, procédé pour sa production et dispositif de mise en oeuvre du procédé

Country Status (4)

Country Link
EP (1) EP0672606B1 (fr)
AT (1) ATE148072T1 (fr)
DE (2) DE9404689U1 (fr)
ES (1) ES2099632T3 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE513197C (de) * 1928-03-08 1930-11-24 Johannes Schmidt Scheibenspule aus Metall zur Aufnahme insbesondere von Draehten, deren Seitenscheiben aus zwei zu Hohlkoerpern verbundenen gekrempten Blechplatten bestehen
US3447674A (en) * 1967-07-14 1969-06-03 William T Fraser Winding core
DE7312632U (de) * 1973-04-04 1973-07-05 Reckwitz & Co Kg Hohlkern aus kunststoff als tragelement fuer kunststoff-folienrollen
DE7422407U (de) * 1974-10-03 Hago Plast Hagemann B Zylindrische Garnspule mit Innen- und Außenzylinder
EP0562757A1 (fr) * 1992-03-20 1993-09-29 GLOSSOP THERMOPLASTICS Ltd Tuyau de canette à fil

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1145558A (en) * 1915-01-19 1915-07-06 Benjamin Denver Coppage Non-deflecting roll.
DE2704610C2 (de) * 1977-02-04 1984-03-15 Hoechst Ag, 6230 Frankfurt Regelanordnung mit einem Regler zur Steuerung der Drehzahl eines angeschlossenen Motors
FI102825B (fi) * 1991-02-20 1999-02-26 Valmet Corp Rullausydin

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7422407U (de) * 1974-10-03 Hago Plast Hagemann B Zylindrische Garnspule mit Innen- und Außenzylinder
DE513197C (de) * 1928-03-08 1930-11-24 Johannes Schmidt Scheibenspule aus Metall zur Aufnahme insbesondere von Draehten, deren Seitenscheiben aus zwei zu Hohlkoerpern verbundenen gekrempten Blechplatten bestehen
US3447674A (en) * 1967-07-14 1969-06-03 William T Fraser Winding core
DE7312632U (de) * 1973-04-04 1973-07-05 Reckwitz & Co Kg Hohlkern aus kunststoff als tragelement fuer kunststoff-folienrollen
EP0562757A1 (fr) * 1992-03-20 1993-09-29 GLOSSOP THERMOPLASTICS Ltd Tuyau de canette à fil

Also Published As

Publication number Publication date
DE9404689U1 (de) 1994-05-26
ATE148072T1 (de) 1997-02-15
DE59500095D1 (de) 1997-03-06
EP0672606A1 (fr) 1995-09-20
ES2099632T3 (es) 1997-05-16

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