EP1209116A2 - Tube pour l'enroulement de bandes relaminées qui sont d'habitude en matériau métallique - Google Patents

Tube pour l'enroulement de bandes relaminées qui sont d'habitude en matériau métallique Download PDF

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Publication number
EP1209116A2
EP1209116A2 EP01118234A EP01118234A EP1209116A2 EP 1209116 A2 EP1209116 A2 EP 1209116A2 EP 01118234 A EP01118234 A EP 01118234A EP 01118234 A EP01118234 A EP 01118234A EP 1209116 A2 EP1209116 A2 EP 1209116A2
Authority
EP
European Patent Office
Prior art keywords
cores
strips
core
coil
slit
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Withdrawn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
EP01118234A
Other languages
German (de)
English (en)
Other versions
EP1209116A3 (fr
Inventor
Sergio Ing. Innocenti
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.)
Arinox SpA
Original Assignee
Arinox SpA
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 Arinox SpA filed Critical Arinox SpA
Publication of EP1209116A2 publication Critical patent/EP1209116A2/fr
Publication of EP1209116A3 publication Critical patent/EP1209116A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/51—Cores or reels characterised by the material
    • B65H2701/512—Cores or reels characterised by the material moulded
    • B65H2701/5122—Plastics

Definitions

  • supporting cores are used for winding up, storage and transport of rolled strips, especially of metal strips, to form the so-called "coils".
  • This invention particularly refers to the cores of metal strips that have been coiled up a second time, i.e. cores suitable to support rewinding of gauged thickness strips, cut or sheared to the width required by the user and forming coils of a prefixed weight.
  • the originally rolled coils are once more drawn to the required thickness (to a minimum value ranging between 0,05 and 0,1 mm,) and are then positioned on a decoiler or uncoiler for subsequent slitting of the strip by multiple shears; the strips, cut to the required width, are rewound on several coiling cores that are usually mounted on one single motor driven shaft.
  • the cores of these coils are obtained from cross-cut tubular glued cardboard or bakelized paper shapes.
  • the tubular glued cardboard cores are obtained from axial or spiral wound cardboard on a cylindrical matrix and this cardboard is impregnated with glue. After setting of the glue, the tubular shape is ready to be cross-cut so as to form the cores on which the strip is coiled.
  • the first drawback is due to the fact that the outer core surface may have blisters caused by imperfect sizing and always features a tiny transverse step at the end of the cardboard winding. This non-uniformity of the outer core surface may cause, especially on thin strips, damage and deformation due to the so called “contraction” of the material.
  • a further drawback is caused by the fact that cardboard is significantly affected by climatic conditions, especially by moisture which will cause swelling and contraction resulting in core detachment from the first coil wap and a "loose core", which may cause trouble, especially during transportation and storage in the warehouse, also in view of the fact that the end section of the strip is simply secured to the core by adhesive tape. It follows that it is necessary to fabricate tubular cores with perfectly smooth and homogeneous outer surfaces, in material which is not affected by climatic conditions.
  • bakelized paper cores which are obtained from tubular shapes consisting of superimposed resin (preferably bakelite) impregnated and oven dried paper wraps.
  • These bakelized cores have substantially the same drawbacks as the above mentioned glued cardboard cores, although the bakelized cores are less subject to deformation caused by climatic conditions, have a more uniform outer surface and may be re-used.
  • the preparation of the bakelite cores is much more expensive than that of the glued cardboard cores and cutting the bakelite produces much dust.
  • This invention has the aim to fabricate supporting cores, on which to coil up mill strips, usually in metal material, so as to obtain guaranteed uniform and stable dimensions of the outer core surface on which the strip is fastened and coiled, ready for storage and delivery. In this way it is possible to eliminate "contraction" of the material, loose or ovalized cores and differentiated up-coiling of the strips on the variously sized cores, also in order to eliminate or at least reduce the dimensions and especially the depth of the "looping pit".
  • the coil 1 obtained from a coil originally produced in the steel mill and rerolled according to need is placed on a downcoiler 2, from which it is unwound and conveyed to a multi-blade slitter 3 by which the initial strip 1 is lengthwise slit into numerous strips of the required length.
  • the strips 4 are rewound into coils 5, each having its own core 6 and usually keyed onto one single shaft or motor driven coiler 7.
  • the cores 6 obtained from tubular, glued cardboard 9 or bakelized paper elements have a non uniform outer surface, caused by blisters and by the small step 10 at the end of the tubular glued or bakelized wrapping and this defect is exemplified in Fig. 2.
  • Glued cardboard cores are most prone to ovalization and deformation caused by the variation of climatic conditions.
  • these defects of the cores now being used are favouring “contraction” of the "loose” and “ovalised "core.
  • the cores 6' of the rewound coils 5 derived by slitting the single strip drawn to size as required by the market are obtained from one single drawn tube 11 in rigid plastic material, preferably rigid PVC, so that these cylinders, when cut into variously sized cores, will provide perfectly smooth and cylindrical coil cores 6', virtually indeformable and easily recyclable, while cross cutting of these original drawn tubes 11 will not produce dust, according to the aims of this invention.
  • the drawn tube 11 from which the various cores 6' are obtained may also be obtained from other drawn plastic material or from properly processed materials so as to achieve cores 6' with a perfectly smooth and homogeneous outer surface on which the strips 4 are coiled, as mentioned above.
  • This invention refers to rewound metal coils and in particular to stainless steel strips. Nevertheless, cores obtained from drawn tubes may also be used for coiling metal strips of other nature.

Landscapes

  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Processing Of Solid Wastes (AREA)
EP01118234A 2000-11-20 2001-07-30 Tube pour l'enroulement de bandes relaminées qui sont d'habitude en matériau métallique Withdrawn EP1209116A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITGE20000187 2000-11-20
ITGE000187 2000-11-20

Publications (2)

Publication Number Publication Date
EP1209116A2 true EP1209116A2 (fr) 2002-05-29
EP1209116A3 EP1209116A3 (fr) 2003-03-26

Family

ID=11442707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01118234A Withdrawn EP1209116A3 (fr) 2000-11-20 2001-07-30 Tube pour l'enroulement de bandes relaminées qui sont d'habitude en matériau métallique

Country Status (1)

Country Link
EP (1) EP1209116A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7905443B2 (en) 2007-10-26 2011-03-15 Papania James F Adjustable vertical accumulator for slitting operation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1104477B (de) * 1957-03-15 1961-04-13 Fritz Ungerer Dipl Ing Haspel mit mehreren durch Reibung mitgenommenen Wickelringen
DE1602284A1 (de) * 1967-03-16 1970-04-30 Kabel Metallwerke Ghh Verfahren zum Aufhaspeln von mehreren durch Zerschneiden eines Metallbandes gebildeten Teilbaendern
US3628367A (en) * 1969-12-12 1971-12-21 Littell Machine Co F J Scroll cutting and slitting machine with tension control means
US4754537A (en) * 1984-04-23 1988-07-05 Burlington Industries, Inc. Process of making a cloth takeup mandrel
DE4301625A1 (de) * 1993-01-22 1994-07-28 Bat Cigarettenfab Gmbh Bobinenkern
IT1260683B (it) * 1993-09-29 1996-04-22 Europa Metalli Lmi Metodo per la produzione e l'avvio al confezionamento di rotoli di un materiale in nastro, in particolare di una lamiera metallica, e dispositivo di taglio utilizzabile in tale metodo.
JP3609170B2 (ja) * 1995-10-05 2005-01-12 富士写真フイルム株式会社 ウェブ巻取装置
DE19816494C2 (de) * 1998-04-14 2000-06-29 M K F Uk Limited Newry Verfahren zur Herstellung von Wickelhülsen und Wickelhülse aus Kunststoff
IT1305928B1 (it) * 1998-10-16 2001-05-21 Fausto Sartini Anima di supporto per materiali nastriformi in rotolo,specialmenteper l'industria cartaria

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7905443B2 (en) 2007-10-26 2011-03-15 Papania James F Adjustable vertical accumulator for slitting operation

Also Published As

Publication number Publication date
EP1209116A3 (fr) 2003-03-26

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