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WO2007093781A1 - noyaux - Google Patents

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Publication number
WO2007093781A1
WO2007093781A1 PCT/GB2007/000499 GB2007000499W WO2007093781A1 WO 2007093781 A1 WO2007093781 A1 WO 2007093781A1 GB 2007000499 W GB2007000499 W GB 2007000499W WO 2007093781 A1 WO2007093781 A1 WO 2007093781A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
core
chuck
core according
moulding
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/GB2007/000499
Other languages
English (en)
Inventor
Steven John Morgan
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.)
ULTRA-CORE Ltd
Original Assignee
ULTRA-CORE 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 ULTRA-CORE Ltd filed Critical ULTRA-CORE Ltd
Priority to CA002642839A priority Critical patent/CA2642839A1/fr
Priority to EP07712726A priority patent/EP1991486A1/fr
Priority to AU2007216364A priority patent/AU2007216364A1/en
Publication of WO2007093781A1 publication Critical patent/WO2007093781A1/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
    • B65H75/185—End caps, plugs or adapters
    • 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
    • B65H2553/00—Sensing or detecting means
    • B65H2553/52—RFID sensor

Definitions

  • This invention relates to cores for use in forming wound rolls of elongate web material, and, more specifically, to inserts for transferring drive torque to a web-winding core formed from composite material.
  • Web material including newsprint, fabric, metal foil amongst many others, is often formed, after manufacture, into wound rolls, which are suitable for mechanical handling. Such rolls are formed by winding the web material onto a core. Each roll may contain many hundreds of meters of wound web, and may be several meters in width. Traditionally, cores have been made of paper-based material.
  • the web is wound onto or drawn from the roll at high speed, in the order of tens of meters per second. If the feed of material is at a constant linear speed, the rotational speed of the roll increases is an inverse function of its outer diameter. Therefore, during withdrawal of web from the roll, assuming that the linear speed of removal remains constant, the rotational speed of the roll will increase over time. Moreover, as the amount of web within the roll decreases, the contribution made by the web material to the structural stiffness of the roll entire decreases, structural integrity of the roll becoming more dependent upon the strength of the core.
  • the composite cores must be compatible with the chucks that are used to grip the traditional cardboard cores and transmit drive torque to them.
  • Such chucks typically have several expanding jaws. Therefore, inserts are provided at each end of the roll that can be gripped by a chuck. These have proven to be successful in use.
  • ends of the jaws penetrate the material of the core to provide a solid engagement with it that is capable of transmitting the required torque between the chuck and the core.
  • the insert were formed from polymeric compounds of low hardness, a sufficient frictional grip to the a chuck can be generally achieved. This is so because, as the jaws of the chuck are expanded to grip the material, the chuck jaws embed themselves into the polymer and deform it. By suitable selection of the polymer, this deformation can be almost entirely elastic so that the insert would quickly self heal and revert to its initial undeflected and unstressed profile and dimensions when the expanding forces are relaxed.
  • the material has advantageously low deflection 'memory' and hysterisis advantageously allowing the core to be reused many times
  • An aim of this invention is to provide an improvement that can be applied to a core to enable self healing and reduce or avoid such damage and increase grip.
  • this invention provides an insert for a core, the insert having an outer surface that can be inserted within a core body, an inner surface (within a bore of the insert) that can be engaged to be driven by a chuck, the core including a restraining structure that can contain forces applied by the chuck to the insert to a core body.
  • the insert serves to isolate the composite material from the gripping forces of the chuck. This allows a user of the core to treat it in much the same way as a conventional core, without causing damage to the composite material of the core body.
  • Most typical embodiments of the insert are formed as mouldings of polymeric material. Such embodiments may be co-mouldings or multi-shot mouldings of two or more polymeric material. In the latter case, the moulding may be formed, in the region of the inner surface, of a relatively soft material of low elastic modulus, and the restraining structure is constituted by a region of relatively hard material of high elastic modulus.
  • reinforcing elements may comprise fibres of high elastic modulus embedded within the moulding or surrounding the moulding. Alternatively or additionally they may include a sleeve or bands of solid material such as metal embedded within the moulding.
  • Alternative moulded embodiments may be formed of a single polymeric material of high elastic modulus. Such an embodiment is inherently capable of resisting the forces applied to it by the chuck.
  • the inner surface may have a cross-sectional shape that is a polygon, preferably a convex polygon, components of the chuck engaging with vertices of the polygon.
  • the vertices extending axially along the length of the insert.
  • the polygon advantageously has vertices that are, in number, an integral multiple of the number of components of a chuck that will engage with it. This ensures that each component of the chuck can occupy a respective vertex and that the insert will be properly centred on the chuck.
  • an embodiment in which the restraining structure includes a metal hoop may be formed as a co-moulding in order to place high- modulus material in the region of the insert that will engage with the core body.
  • this invention provides a core having a tubular core body, and a respective insert according to the first aspect of the invention disposed towards opposite ends of the core body.
  • the core body is formed as a composite material.
  • it may be formed from fibre-reinforced resin.
  • Figures 1, 2 and 3 are side, end and end views of a core insert being a first embodiment of the invention
  • Figure 4 is a perspective view of a core insert being a second embodiment of the invention.
  • Figure 5 is a perspective view of part of a core being suitable for use with an insert embodying the invention.
  • the embodiment comprises a cylindrical core body 10 of fibre reinforced composite material and two inserts 12, just one being shown.
  • the inserts are disposed at opposite ends of the body 10.
  • the core includes reinforcing fibres disposed substantially perpendicular to the longitudinal axis of the core and further reinforcing fibres disposed at at least one angle other than 90° to the longitudinal axis of the core.
  • the fibres may comprise glass, carbon, aromatic polyamide such as Aramid and/or metallic fibres.
  • the wall of the core body may comprise layers including respective different types of fibre.
  • the construction of one example of a suitable core body has already been described in UK patent application No. 0516073.4 and will not be described further here.
  • the invention also has application to cores that include bodies of other construction where there is a potential problem arising from the interaction between the core and a chuck.
  • the core body 10 comprises a generally cylindrical hollow body that has cylindrical inner and outer surfaces. Within the core body 10, longitudinal ribs 14 are formed, in this embodiment, projecting into the hollow within the core and extending longitudinally from each end of the core. An axial bore extends through the core body 10.
  • the insert 12 is formed as a rotationally symmetrical body of self-healing polymeric material.
  • the insert has a head portion 16 and a tail portion 18 disposed coaxially.
  • the head portion 16 has a cylindrical outer surface that is substantially the same diameter as the outer surface of the core 10 body, and extends longitudinally beyond the ends of the body 10. The head portion 16 thus protects the ends of the core body from damage that might arise, for example, by dropping the core, since the insert 12 is more resilient than the body 10.
  • the tail portion 18 has an outer diameter that is substantially the same as the inner diameter of the core 10 body, and has a plurality of axial grooves 20.
  • the diameter of the tail portion 18 and the size and position of the grooves 20 are such that the tail portion 18 is a close sliding fit within the core body 10, with each rib 14 entering a corresponding groove 20. Additional grooves are provided in some embodiments to accommodate other items, such as RFID antennas or other items.
  • the core body 10 and insert 12 are constrained to rotate together.
  • a fastener[s] (not shown) may be passed radially through the core body 10 to enter the material of the insert 12 to secure the insert axially in place. Alternatively or additionally, the insert 12 may be secured by adhesive.
  • the head portion 16 being of the same diameter as the core body 10, has an outer surface that forms a substantially continuous surface with the outer surface of the core body 10. This ensures compatibility of the core with existing apparatus that is intended for use with a conventional core of continuous diameter. Since the head portion 16 abuts an end surface of the core body 10, it serves to protect that end surface.
  • the end surface of the core as a whole is formed by an end surface 22 of the head portion 16, which can be moulded or machined to a suitable shape and finish.
  • the insert can be formed by one or more of machining and moulding, including co-moulding or two-shot moulding, as required.
  • the core insert is principally formed from a self healing polymeric material to allow multiple reuse and high grip.
  • the core insert is principally formed from a soft polymeric material and localised reinforcement is introduced to resist expansive deformation under the action of the jaws of the chuck.
  • a sleeve 30 of high-modulus material is introduced into the insert during manufacture.
  • the sleeve is coaxial with the bore of the insert 12.
  • the bore can be formed to have substantially the same diameter as that of a conventional core, and the jaws of the chuck can penetrate into the material to provide the required grip.
  • Material radially inwardly of the sleeve can be deflected by the chuck as required to achieve adequate frictional coupling between the sleeve 12 and the chuck.
  • the sleeve 30 substantially prevents deflection of material radially outwardly of the sleeve 30, so that radial loads are substantially prevented from being transmitted to the core 10.
  • the sleeve 30 can be formed in a variety of ways. For example, it may be a simple metal tube moulded into the insert 12. This is a low-cost approach, but can, under conditions, cause weakness within the moulding of the insert 12. This disadvantage can be mitigated by use of a perforated sleeve 30, which allows the material of the insert 12 to flow through the perforations during moulding so promoting the integrity of the moulding as a whole. Likewise, this could be achieved by use of several coaxial, axially-spaced rings.
  • the reinforcement may be formed from many high modulus materials, such as reinforcement using inorganic, organic or metallic fibres or high-modulus polymers. The reinforcement could be either integrally inserted within the insert profile during manufacture or subsequently fitted externally to the insert 12, for example, as a band surrounding it.
  • the embodiment of Figures 3 includes materials of different properties at different locations.
  • a soft polymeric material forms that part of the body which surrounds the bore.
  • the bore can be formed to have substantially the same diameter as that of a conventional core, and the jaws of the chuck can penetrate into the material to provide the required grip whilst advantageously self healing to allow multiple reuse.
  • This soft material is surrounded by material that is substantially harder and therefore more resistant to deflection. This serves to resist the forces exerted by the chuck and ensures that the outer diameter of the insert remains substantially unchanged, so preventing damage to the core.
  • Such an insert can be fo ⁇ ned as a co-moulding or a two-shot moulding.
  • the layers may be either discrete or progressively blended in properties.
  • the tail portion 18 in the region of the grooves 20 may also be formed by a hard material so as to be more effective in transmission of torque between the insert 12 and the core body 10.
  • An alternative means for increasing the amount of grip that the chuck can achieve upon the core is to provide an insert that is shaped to accommodate the jaws of the chuck such that it can provide a sufficiently secure interaction with the chuck while undergoing deflection that is limited to such an extent that no damage to the core 10 will occur.
  • This embodiment has the advantage that the insert can be formed as a simple moulding of a single polymeric material.
  • Most chucks are of 2, 3, 4, or 6 jaw configuration, with the jaws circumferentially disposed at equal intervals for radial expansion.
  • the bore of the insert 10 has a polygonal cross section.
  • the number of faces of the polygon is an integer multiple of the number of jaws of the chuck with which it is to be used.
  • This embodiment has twelve faces, twelve being a multiple of all of the above numbers of jaws.
  • Alternative embodiments may have, for example, twenty-four faces, and would also be suitable for use with chucks having the numbers of jaws listed above.
  • each jaw When the core is mounted and the jaws of the chuck are expanded, each jaw will typically make contact with one of the faces of the polygonal bore. As the jaws continue to expand, they tend to slide towards the vertices of the bore, causing the chuck and/or the core to rotate. Eventually, each jaw locates itself at one of the vertices of the bore, so enabling torque to be transmitted in both rotational directions between the insert and the core. This has an effect that is mechanically equivalent to the mechanical interaction that occurs as a result of indentation of a paper-based core by the chuck jaws.
  • a polygonal bore with 15, 20 or 25 sides may be appropriate.
  • ribs or grooves may be formed in the bore with which the jaws of the chuck can interact.
  • a suitable soft self healing polymeric material may be polyurethane with a Shore hardness of 4OD. This material has been found to have the advantageous self-healing, low deflection memory and hysteresis properties to provide the level of grip that is sought after.
  • ARAMID is a registered trade mark of E. I. du Pont de Nemours and Company.

Landscapes

  • Winding Of Webs (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne une insertion (12) qui a une utilisation particulière dans la construction d'un noyau d'enroulement de bandes avec un corps composite (10). L'insertion (12) a une surface externe qui peut être insérée dans un corps de noyau, et une surface interne qui peut être mise en contact pour être entraînée par un mandrin. Le noyau comprend une structure de rétention qui peut résister à la transmission des forces appliquées par un mandrin à l'insertion sur un corps de noyau. L'insertion est de préférence formée à partir d'un polymère résistant, autorégénérant qui peut être serré sans cesse par un mandrin d'entraînement qui est très résistant à l'usure et la détérioration.
PCT/GB2007/000499 2006-02-14 2007-02-13 noyaux Ceased WO2007093781A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002642839A CA2642839A1 (fr) 2006-02-14 2007-02-13 Noyaux
EP07712726A EP1991486A1 (fr) 2006-02-14 2007-02-13 Noyaux
AU2007216364A AU2007216364A1 (en) 2006-02-14 2007-02-13 Cores

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0603112.4 2006-02-14
GB0603112A GB2435028B (en) 2006-02-14 2006-02-14 Inserts for transferring drive torque to a core

Publications (1)

Publication Number Publication Date
WO2007093781A1 true WO2007093781A1 (fr) 2007-08-23

Family

ID=36141941

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/000499 Ceased WO2007093781A1 (fr) 2006-02-14 2007-02-13 noyaux

Country Status (5)

Country Link
EP (1) EP1991486A1 (fr)
AU (1) AU2007216364A1 (fr)
CA (1) CA2642839A1 (fr)
GB (1) GB2435028B (fr)
WO (1) WO2007093781A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12077407B2 (en) 2020-09-30 2024-09-03 Ppc Broadband, Inc. Reusable reel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8070088B2 (en) * 2007-11-16 2011-12-06 Cott Technologies, Inc. Permeate tube and related methods
NL2008946C2 (nl) * 2012-06-06 2013-12-09 Berend Breman Cilindervormig product, opneeminrichting, voertuig en werkwijze.

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1113676A (en) * 1966-04-04 1968-05-15 Wallwork Gears Ltd Improvements relating to bobbins
US4373685A (en) * 1980-12-18 1983-02-15 Lhp Corporation Strand carrier
US5340050A (en) * 1993-04-20 1994-08-23 Sonoco Products Company Tubular core assembly having inside-diameter reducing end members secured by mechanical interlocking member
DE4435761A1 (de) * 1993-10-16 1995-04-20 Gmp Co Vorrichtung zum Fixieren einer Laminatorfilmrolle
US6123285A (en) * 1996-09-23 2000-09-26 R. R. Donnelley & Sons Company Expandable fiber core insert
EP1211214A2 (fr) * 2000-12-01 2002-06-05 Sonoco Development, Inc. Noyau composite
FR2848272A1 (fr) * 2002-12-09 2004-06-11 Roll & Concept Mandrin d'enroulement pour le bobinage de produits
US20040245368A1 (en) * 2003-05-29 2004-12-09 Kewin Daniel D. Tubular core assemblies for rolls of paper or other sheet material
WO2005092758A1 (fr) * 2004-03-01 2005-10-06 Core Control Limited Mandrin pour rouleau de papier d'impression
WO2006043021A1 (fr) * 2004-10-21 2006-04-27 Core Control International Limited Mandrin pour rouleau de materiau

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713601A (en) * 1970-04-13 1973-01-30 Columbia Great Lakes Corp Core assembly
US5615845A (en) * 1996-04-03 1997-04-01 Kewin; Daniel D. Tubular core assembilies for rolls of paper or other sheet material
US7204451B2 (en) * 2004-02-25 2007-04-17 Sonoco Development, Inc. Winding core and associated method

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1113676A (en) * 1966-04-04 1968-05-15 Wallwork Gears Ltd Improvements relating to bobbins
US4373685A (en) * 1980-12-18 1983-02-15 Lhp Corporation Strand carrier
US5340050A (en) * 1993-04-20 1994-08-23 Sonoco Products Company Tubular core assembly having inside-diameter reducing end members secured by mechanical interlocking member
DE4435761A1 (de) * 1993-10-16 1995-04-20 Gmp Co Vorrichtung zum Fixieren einer Laminatorfilmrolle
US6123285A (en) * 1996-09-23 2000-09-26 R. R. Donnelley & Sons Company Expandable fiber core insert
EP1211214A2 (fr) * 2000-12-01 2002-06-05 Sonoco Development, Inc. Noyau composite
FR2848272A1 (fr) * 2002-12-09 2004-06-11 Roll & Concept Mandrin d'enroulement pour le bobinage de produits
US20040245368A1 (en) * 2003-05-29 2004-12-09 Kewin Daniel D. Tubular core assemblies for rolls of paper or other sheet material
WO2005092758A1 (fr) * 2004-03-01 2005-10-06 Core Control Limited Mandrin pour rouleau de papier d'impression
WO2006043021A1 (fr) * 2004-10-21 2006-04-27 Core Control International Limited Mandrin pour rouleau de materiau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12077407B2 (en) 2020-09-30 2024-09-03 Ppc Broadband, Inc. Reusable reel
US20250178858A1 (en) * 2020-09-30 2025-06-05 Ppc Broadband, Inc. Reusable reel

Also Published As

Publication number Publication date
AU2007216364A1 (en) 2007-08-23
GB2435028A (en) 2007-08-15
EP1991486A1 (fr) 2008-11-19
GB2435028B (en) 2008-07-02
CA2642839A1 (fr) 2007-08-23
GB0603112D0 (en) 2006-03-29

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