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WO2006062852A1 - Noyau d'enroulement a raideur elevee - Google Patents

Noyau d'enroulement a raideur elevee Download PDF

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Publication number
WO2006062852A1
WO2006062852A1 PCT/US2005/043784 US2005043784W WO2006062852A1 WO 2006062852 A1 WO2006062852 A1 WO 2006062852A1 US 2005043784 W US2005043784 W US 2005043784W WO 2006062852 A1 WO2006062852 A1 WO 2006062852A1
Authority
WO
WIPO (PCT)
Prior art keywords
shell
winding core
core
end fittings
winding
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.)
Ceased
Application number
PCT/US2005/043784
Other languages
English (en)
Inventor
Wim Van De Camp
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.)
Sonoco Development Inc
Original Assignee
Sonoco Development Inc
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 Sonoco Development Inc filed Critical Sonoco Development Inc
Priority to MX2007006697A priority Critical patent/MX2007006697A/es
Priority to CA002589262A priority patent/CA2589262A1/fr
Priority to AU2005314293A priority patent/AU2005314293A1/en
Priority to BRPI0518435-5A priority patent/BRPI0518435A2/pt
Priority to EP05852869A priority patent/EP1819621A1/fr
Publication of WO2006062852A1 publication Critical patent/WO2006062852A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B65H75/18—Constructional details
    • 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
    • B65H75/18—Constructional details
    • B65H75/30—Arrangements to facilitate driving or braking
    • 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
    • B65H75/18—Constructional details
    • B65H75/185—End caps, plugs or adapters

Definitions

  • the invention relates to winding cores for web materials such as paper.
  • Web converters such as printers or the like continually strive to increase productivity of converting processes by increasing the total amount of web throughput per unit time.
  • rotogravure printer designers are currently developing 4.32 meter wide printing presses for high-speed printing. Paper supply rolls for such presses would weigh in excess of 7 tons. Applications such as this place extreme demands on the stability of current winding cores.
  • a chief difficulty with conventional paperboard winding cores is that in the increased 4.32 meter length, the core generally is not stiff enough to avoid the core encountering its natural frequency when the unwinding roll reaches the end of the paper and the rotational speed of the core is at a maximum. This can lead to extreme vibration and catastrophic failure of the core.
  • a potential solution to the problem is to increase core stiffness by increasing core diameter, but this would be undesirable if it meant that the cores would not be compatible with existing winding and unwinding machinery, as would be the case if the inside diameter of the core were increased.
  • a core is typically mounted on a rotating expandable chuck that is inserted into each end of the core and expanded to grip the inside of the core so that the core does not slip relative to the chuck as torque is applied therebetween.
  • the rotation of the core is achieved by means of a drive coupled to one or both of the chucks, and the core is rotated to achieve web speeds of, for example, 15 to 16 m/s.
  • the rolls of material are often subjected to substantial circumferential acceleration and deceleration by the winding machines. This, in turn, subjects the engaged ends of the paperboard roll to substantial torque forces. This often leads to some slippage of the chuck on the inside of the core. In an extreme situation, the slippage can lead to "chew-out" wherein the core is essentially destroyed by the chuck.
  • the winding core comprises a tubular shell of FRP, which is substantially stiffer than a paperboard tube of the same dimensions.
  • FRP fiber-reinforced plastic
  • the winding core also includes a pair of generally tubular end fittings bonded to the inner surface of the shell at the opposite ends, the end fittings comprising a material having a durometer hardness substantially lower than that of the shell and being positioned to be engaged by winding or unwinding chucks.
  • Each end fitting has an axial length that is a relatively small fraction of the length of the shell.
  • the winding core in one embodiment has a length sufficient to accommodate 4.32-meter wide paper as required in the new rotogravure printing presses.
  • the end fittings comprise a coating of the material having a relatively low durometer hardness in comparison with the FRP shell.
  • the material can comprise a rubbery or elastomeric material such a polyurethane or the like.
  • the coating can be provided by depositing the material in fluid form onto the inner surface of the shell while the shell is rotated about its axis so that the material is slung radially outward by centrifugal force and therefore flows to form a coating of substantially uniform thickness about the circumference of the shell.
  • the end fittings could be separately manufactured as tubular articles and inserted into the shell and bonded thereto in suitable fashion.
  • Winding cores in accordance with the invention can have nominal inside diameters ranging from about 76 mm (3 inches) to about 560 mm (22 inches), and wall thicknesses ranging from about 9 mm (0.34 inch) to about 18 mm (0.710 inch).
  • the winding cores can have lengths exceeding 1 meter, up to a length sufficient to accommodate 4.32-meter wide paper used in the new rotogravure printing presses.
  • the end fittings can each have an axial length of about 50 to 300 mm and a radial thickness of about 1 to 6 mm.
  • FIG. 1 is a perspective view of a winding core in accordance with one embodiment of the invention, with a chuck to be inserted into the core;
  • FIG. 2 is a cross-sectional view along line 2-2 in FIG. 1, after insertion of the chuck; and FIG. 3 is a cross-sectional view along line 3-3 in FIG. 2.
  • FIGS. 1-3 illustrate a tubular article or winding core 10 in accordance with one embodiment of the invention.
  • the winding core 10 comprises a tubular shell 12 of fiber-reinforced plastic (FRP), which can be formed, for example, by a pultrusion process in which resin-impregnated fiber tows are pulled linearly through an annular die about a center cylindrical mandrel or support.
  • FRP fiber-reinforced plastic
  • the particular manner in which the shell 12 is formed is not critical to the invention, and other processes for forming the shell can be used if desired.
  • the FRP material can comprise various fiber materials and resin matrix materials.
  • the fibers can be, for example, glass, carbon, aramid, polyester, and the like.
  • the resin matrix can comprise any known suitable materials such as epoxy, polyester, nylon, vinyl ester, and the like.
  • the winding core also includes a pair of tubular end fittings 14 (only one shown) respectively mounted within the opposite ends of the shell 12 and bonded to the inner surface of the shell.
  • Each end fitting has an axial length substantially less than the length of the shell 12, and need be only long enough to be engaged by the chucks 20 (only one shown) that are inserted into the ends of the core to grip and support the core during winding or unwinding of a roll of material wound about the core.
  • each end fitting has an axial length ranging from about 100 mm to about 300 mm, whereas the winding core's length generally exceeds 1 meter and may be up to about 4.3 meters.
  • the end fittings 14 are constructed to have a durometer hardness substantially lower than that of the FRP shell 12.
  • the FRP shell has a hardness too great to enable the chucks to grip the shell with enough frictional resistance to prevent slippage between the core and the chucks during certain operations when there is acceleration or deceleration of the core or chucks.
  • the end fittings provide a surface that the chucks can more readily “dig into” and frictionally grip so that slippage is prevented.
  • the end fittings are preferably constructed of a deformable material such as an elastomeric or rubbery type of material. Polyurethane is a particularly suitable material for the end fittings, but other materials can be used instead, including paperboard or other relatively soft material.
  • the end fittings 14 can be formed and bonded to the shell 12 in various ways.
  • An in situ method of forming the end fittings comprises rotating the shell 12 about its axis and applying the end fitting material in fluid form to the inner surface of the shell at its opposite ends. Centrifugal force slings the material outwardly and causes it to flow along the inner surface of the shell so that a coating of substantially uniform thickness is formed on the inner surface at the ends of the shell. The material then cures to form a coating at each end of the shell.
  • the end fittings could be formed separately and then bonded to the shell with a suitable adhesive.
  • the end fittings could be formed as thin-walled paperboard tubes and then adhered to the inner surface of the shell.
  • the end fittings 14 provide their intended function in part by being deformed in the radial direction by the inserted chucks, which in some cases have leaves or lugs that are expandable radially outwardly to engage the inner surface of a core. Accordingly, the end fittings desirably should have a radial thickness sufficient to allow some degree of radial deformation.
  • the radial thickness can be about 1 mm to 6 mm.
  • the durometer hardness of the end fittings 14 preferably should be less than about 20 Rockwell C.
  • Winding cores in accordance with the invention can be formed in a wide range of sizes. Winding cores tend to be somewhat standardized in terms of their inside diameters, but multiple standards exists. For example, commonly used cores have nominal inside diameters of about 76 mm (3 inches), 127 mm (5 inches), 152 mm (6 inches), 203 mm (8 inches), 254 mm (10 inches), 305 mm (12 inches), 406 mm (16 inches), and 559 mm (22 inches). There are several commonly used wall thicknesses for cores, including 8.6 mm (0.34 inch), 12.7 mm (0.5 inch), 13.7 mm (0.54 inch), 15 mm (0.59 inch), 15.2 mm (0.60 inch), and 18 mm (0.71 inch). Of course, while the invention can be applied to cores having these dimensions, the invention is not limited to any particular inside diameter and wall thickness dimensions.
  • the winding cores in accordance with the invention generally exceed 1 meter in length, and can be long enough to accommodate 4.32- meter wide paper used in the new rotogravure printing presses that have recently been developed.
  • the high stiffness provided by the FRP shell 12 of the winding core leads to an increase in the natural frequency of the core relative to a conventional paperboard core, so that the core can be rotated at a higher speed before encountering its first natural frequency.
  • suitable design of the core i.e., material selection, wall thickness, etc.
  • it can be assured that the natural frequency is higher than the highest rotational speed expected to be encountered by the core during use.
  • the invention enables the advantages of high-stiffness FRP material to be enjoyed in winding cores, while still retaining sufficient frictional gripping of the cores by winding/unwinding chucks.

Landscapes

  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

La présente invention a trait à un noyau d'enroulement (10) présentant une raideur élevée en étant constituée majoritairement d'une matière plastique renforcée telle qu'un matériau en fibre de verre ou analogue. En particulier, le noyau d'enroulement (10) comporte une enveloppe tubulaire (12) en matière plastique renforcée, et une paire de pièces de fixation d'extrémité de forme globalement tubulaire (10) collées à la surface interne de l'enveloppe (12) à des extrémités opposées, les pièces de fixation d'extrémité (14) comportant un matériau présentant une dureté au duromètre sensiblement inférieure à celle de l'enveloppe (12) et étant positionnées pour être engagées par des mandrins d'enroulement/de déroulement (20). Chaque pièce de fixation d'extrémité présente une longueur axiale qui est une fraction relativement faible de la longueur de l'enveloppe (12).
PCT/US2005/043784 2004-12-06 2005-12-05 Noyau d'enroulement a raideur elevee Ceased WO2006062852A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
MX2007006697A MX2007006697A (es) 2004-12-06 2005-12-05 Nucleo de enrollamiento de alta rigidez.
CA002589262A CA2589262A1 (fr) 2004-12-06 2005-12-05 Noyau d'enroulement a raideur elevee
AU2005314293A AU2005314293A1 (en) 2004-12-06 2005-12-05 High-stiffness winding core
BRPI0518435-5A BRPI0518435A2 (pt) 2004-12-06 2005-12-05 nécleo de enrolamento de alta rigidez
EP05852869A EP1819621A1 (fr) 2004-12-06 2005-12-05 Noyau d'enroulement a raideur elevee

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/005,090 US20060163420A1 (en) 2004-12-06 2004-12-06 High-stiffness winding core
US11/005,090 2004-12-06

Publications (1)

Publication Number Publication Date
WO2006062852A1 true WO2006062852A1 (fr) 2006-06-15

Family

ID=36097045

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/043784 Ceased WO2006062852A1 (fr) 2004-12-06 2005-12-05 Noyau d'enroulement a raideur elevee

Country Status (9)

Country Link
US (1) US20060163420A1 (fr)
EP (1) EP1819621A1 (fr)
KR (1) KR20070086368A (fr)
CN (1) CN101072722A (fr)
AU (1) AU2005314293A1 (fr)
BR (1) BRPI0518435A2 (fr)
CA (1) CA2589262A1 (fr)
MX (1) MX2007006697A (fr)
WO (1) WO2006062852A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008041268A1 (de) 2008-08-14 2010-02-18 Voith Patent Gmbh Walze für Auftragseinrichtung und Verfahren zum Auswuchten einer Walze

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8770509B2 (en) * 2011-02-04 2014-07-08 Tama Plastic Industry Bobbin for roll stock
CN104495523A (zh) * 2014-11-29 2015-04-08 东电化日东（上海）电能源有限公司 分切机用管芯结构及其转接器
ES3026227T3 (en) * 2018-03-02 2025-06-10 Sonoco Dev Inc Core with improved chuck interaction
CN110980433A (zh) * 2019-12-26 2020-04-10 江苏一澜智能科技有限公司 一种加弹纸管用卡盘组件与加弹机
US11518645B2 (en) 2021-03-15 2022-12-06 Sonoco Development, Inc. Lightweight paper tube structure capable of high loading

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* Cited by examiner, † Cited by third party
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US5857643A (en) * 1995-06-07 1999-01-12 Eastman Kodak Company Core for winding a web of deformable material
US20030141403A1 (en) * 2000-06-28 2003-07-31 Metso Paper Karlstad Ab Reel shaft and reel-up for reeling a paper web
EP1479634A1 (fr) * 2003-05-23 2004-11-24 EHA Spezialmaschinenbau GmbH Arbre, en particulier un arbre d'enroulement, avec des supports d'extrémité spéciaux
US20040232274A1 (en) * 2003-05-22 2004-11-25 Gardner William H. Fiber reinforced hybrid composite winding core
WO2005082760A1 (fr) * 2004-02-25 2005-09-09 Sonoco Development, Inc. Noyau d'enroulement et procede associe

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Publication number Priority date Publication date Assignee Title
US5857643A (en) * 1995-06-07 1999-01-12 Eastman Kodak Company Core for winding a web of deformable material
US20030141403A1 (en) * 2000-06-28 2003-07-31 Metso Paper Karlstad Ab Reel shaft and reel-up for reeling a paper web
US20040232274A1 (en) * 2003-05-22 2004-11-25 Gardner William H. Fiber reinforced hybrid composite winding core
EP1479634A1 (fr) * 2003-05-23 2004-11-24 EHA Spezialmaschinenbau GmbH Arbre, en particulier un arbre d'enroulement, avec des supports d'extrémité spéciaux
WO2005082760A1 (fr) * 2004-02-25 2005-09-09 Sonoco Development, Inc. Noyau d'enroulement et procede associe

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Title
See also references of EP1819621A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008041268A1 (de) 2008-08-14 2010-02-18 Voith Patent Gmbh Walze für Auftragseinrichtung und Verfahren zum Auswuchten einer Walze

Also Published As

Publication number Publication date
AU2005314293A1 (en) 2006-06-15
CN101072722A (zh) 2007-11-14
KR20070086368A (ko) 2007-08-27
MX2007006697A (es) 2007-08-14
BRPI0518435A2 (pt) 2008-11-18
CA2589262A1 (fr) 2006-06-15
US20060163420A1 (en) 2006-07-27
EP1819621A1 (fr) 2007-08-22

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