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
  • B65H75/22—Constructional details collapsible; with removable parts
  • B65H75/2245—Constructional details collapsible; with removable parts connecting flange to hub
• • 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
  • B65H75/22—Constructional details collapsible; with removable parts
  • B65H75/2254—Constructional details collapsible; with removable parts with particular joining means for releasably connecting parts
  • B65H75/2281—Snap-fit connections
• • 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
  • B65H2701/513—Cores or reels characterised by the material assembled mainly from rigid elements of the same kind
  • B65H2701/5136—Moulded plastic elements

Definitions

• the present invention relates to a spool of a plastics material for reception thereon of a strand-like material, such as e.g. tape, cable, wire and the like, comprising two preferably disc-like end members held together in spaced-apart relationship by a tubular core extending between said end discs.
• a strand-like material such as e.g. tape, cable, wire and the like
• Spools of this kind usually are manufactured by moulding the end discs separately and then gluing them to the core.
• numerous different end-disc diameter sizes could be used together with a core of a specific length just like numerous different core lengths could be used together with an end disc of a specific diameter size.
• glue is used as the bonding agent to fasten the end discs to the core it is very difficult to find a glue that is suitable from an environmental point of view.
• factory-finished spools are very bulky to store as well as to transport and handle.
• the main object of the invention is to provide a spool obviating the necessity of using environmentally harmful bonding agents while at the same time the number of pieces necessary to supply the desired spool volumes and spool dimensions is considerably reduced.
• a further object of the invention is to provide a reliably operating spool structure that requires but a minimum storage and transportation space. This object is achieved by means of a spool in accordance with the subject invention which is essentially characterised in that the end discs and the core are formed with portions of complementary configuration, said complementary portions arranged to be fitted into one another upon assembly of said spool while making use of the resiliency of the plastic material.
• the end discs are provided with protruding supports formed with grip lugs, said protruding supports projecting axially from the facing sides of said discs, and in the area of its ends the core is provided with grip portions comprising grip edges, said edges arranged, in the interfitted position of the core and the end discs, to be engaged by the end-disc grip lugs after the latter having been forced past the core grip portions upon interfitting of the end discs and the core.
• This arrangement gives a very strong construction with minimum risks for the components separating when handled roughly.
• the grip lugs of the end discs are configured as hook-like tongues comprising a wedge-shaped face turned away from the associated end disc and a grip edge facing the associated end disc for snap engagement with the grip portion in the core. Accordingly, the assembly may be performed conveniently by merely pressing the end discs and the core together axially.
• the grip tongues are directed radially outwards, and the grip edges formed in the core are recesses made in the core wall, preferably in the shape of apertures extending through the core wall.
• the grip lugs on the end discs preferably are spaced apart along a circular arc, second protruding supports preferably being arranged between the first protruding supports, said second supports having wedge- shaped sloping ramps to be ridden on by the core.
• the grip lugs on the end discs are non- resilient, i.e. stiff, whereby passage of said lugs by means of the grip portions of the core is allowable by extension of the core in the circumferential direction thereof, a very reliable, durable joint is achieved once the components have been pressed together, a joint which an unauthorised person may disconnect only with considerable difficulty.
• the arrangement prevents the joint from being disconnected and the components again be fitted together in a manner jeopardising the strength of the spool .
• Fig. 1 is a perspective view of a spool designed in accordance with the invention
• Fig. 2 is an exploded view of one end portion of the core and the inner face of an end disc of the spool in accordance with the invention, shown in an exploded view in a non-mounted condition
• Fig. 3 is an axial cross-sectional view through the central part of the end disc and the end portion of the core intended for the same spool as in the preceding drawing figures, and
• Figs 4-6 are fragmentary axial views as seen from the inner face of one end disc and showing the sequential deformation of the core as it is being fitted onto the end disc.
• the spool illustrated in the drawing figures consists of two end discs 1 which are held together in spaced apart relationship by a tubular core 2.
• the end discs 1 preferably are identical but could equally well differ in shape as well as in configuration, should this be desired.
• the outwardly directed face of the end discs are formed with a number of stiffening ribs 3, 4 and 5. It is of course equally possible to provide the end discs with stiffening ribs on their inner face or to design them with a smooth outer face or both faces smooth, or to form them with stiffening ribs having a different appearance and exten- sion.
• the spool may be used to receive any windable material, such as tape, cable, wire and the like.
• Numeral reference 6 designates protruding supports generally, said supports projecting from the inner face of the end disc and in accordance with the shown embodiment they consist of an annular, axially protruding flange 7 and of grip lugs 8 distributed along the flange periphery and projecting radially beyond the outer face of the flange.
• the grip lugs 8 form hook-shaped grip tongues comprising a wedge-shaped face 8a turned away from the inner face 9 of the end disc, and a grip edge 8b turned towards the inner face of the end disc.
• the grip tongues are stiffened by a stiffening web 10 extending radially towards the disc centre, the grip portions consequently being non- resilient (non-flexible) .
• Numeral reference 11 designates a stiffening web which like stiffening web 10 extends radially and is formed with a wedge-like sloping edge face 12.
• the parts of the annular flange 7 extending between the grip tongues 8 have an obliquely bevelled face 13 on its edge turned away from the end disc.
• the oblique bevel 13 forms a continuation of the wedge-shaped edge face 12 of the stiffening web 11.
• the stiffening web 10 has a wedge-shaped face 14 which forms a continuation of the wedge-shaped face 8a of the engagement tongue 8.
• Numeral reference 15 designates a centre hole formed in the end disc by means of which the spool may be rotatably mounted on e.g. a shaft.
• Numeral reference 16 designates apertures formed adjacent the ends of the core 2, the aperture edges 18 closest to the core end 17 forming grip edges which cooperate with the grip edges 8b on the grip tongues. The spool is assembled by the core being pressed against the end disc 9.
• the grip tongues 8 are provided in a number of four as are also the projecting supports formed by the stiffening webs and positioned between the tongues. Within the scope of the invention, this number could, of course, be higher or lower. It is not either necessary that the number of projecting supports having grip tongues formed thereon is identical with the number of projecting supports posi- tioned therebetween.
• the annular flange 6 need not be continuous along the entire periphery. Instead, it could be divided into a number of sections spaced somewhat apart.
• the flange-shaped annular member 7 could, however, be omitted altogether.
• the stiff arrangement of the grip lugs is preferable in order to achieve a stable and durable joint it is within the scope of the invention to make the grip lugs somewhat resilient. This feature may be relevant, should it be desired to make the joint releasable in order to purposefully make it possible to dismantle the spool. In this case, the dismantling may be effected by forcing the grip tongues through the grip apertures.

Applications Claiming Priority (3)

Publications (2)

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ID=20404495

Family Applications (1)

Country Status (6)

Cited By (1)

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• 1996
  • 1996-11-04 SE SE9604038A patent/SE507320C2/sv not_active IP Right Cessation
• 1997
  • 1997-11-04 AU AU49729/97A patent/AU4972997A/en not_active Abandoned
  • 1997-11-04 WO PCT/SE1997/001834 patent/WO1998019953A1/en active IP Right Grant
  • 1997-11-04 EP EP97912604A patent/EP0935579B1/de not_active Expired - Lifetime
  • 1997-11-04 DE DE69722232T patent/DE69722232T2/de not_active Expired - Fee Related
• 1999
  • 1999-05-03 NO NO19992133A patent/NO313379B1/no unknown

Non-Patent Citations (1)

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