Unitary, high-load capacity plastic reel

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 75/18 (2006.01) B29C 45/26 (2006.01) B65H 75/14 (2006.01) B65H 75/50 (2006.01)

Patent

CA 2272358

A unitary, high-load capacity plastic reel (50) of lightweight design comprises first (55a) and second (55b) substantially circular flanged side portions, a drum portion (60) formed between the flanged side portions, a central shaft hole (75) extending linearly along a central axis of the reel between each flange portion, and a plurality of holes (80) extending from each flange portion to partially within the drum portion parallel to the central shaft hole, the plurality of holes contributing to the lightweight design. A unitary reel forming mold (100) for manufacturing the unitary reel consists of a gate opening (110) enabling a plastics extrusion device to fill the mold. A centrally located mold-pin (229) of tapered design is provided in the mold having an upper surface proximate the gate opening to facilitate even distribution of the plastics from the extrusion device to all parts within the mold.

Cette invention concerne une bobine de plastique (50) unitaire, à grande capacité de chargement et d'un faible poids. Cette bobine comprend les éléments suivants: une première (55a) et une seconde (55b) parties latérales comportant des flancs et globalement circulaires; une partie tambour (60) formée entre les parties latérales comportant des flancs; un trou d'arbre central (75) linéaire qui suit l'axe central de la bobine entre les deux parties comportant des flancs; et enfin, plusieurs trous (80) qui partent de chaque partie comportant des flancs, qui s'étendent partiellement jusque dans la partie tambour et qui sont parallèles au trou d'arbre central. Ces trous contribuent à l'obtention d'une structure de faible poids. Cette invention concerne également un moule (100) permettant de former une bobine unitaire, lequel comprend une ouverture d'entrée (110) permettant à un dispositif d'extrusion de matières plastiques de le remplir. Une goupille de moulage (229) centrale et conique est disposée dans le moule et possède une surface supérieure proche de l'ouverture d'entrée, ceci de manière à faciliter la répartition uniforme des matières plastiques provenant du dispositif d'extrusion dans toutes les parties dudit moule.

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