B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 75/18 (2006.01)
Patent
CA 2121273
The invention provides tubular core assemblies for winding or unwinding of sheet material, such as newsprint, wherein the opposed ends of an elongate cylindrical core are provided with core insert members securely attached by adhesive bonding to the inside and surfaces of the cylindrical core for reducing the inside diameter of the ends of the cylindrical core. The annular core insert members each include a substantially frustoconical exterior surface for joining to the inside periphery of the ends of the cylindrical core and the opposed ends of the cylindrical core have substantially frustoconical interior surfaces which match the substantially frustoconical exterior surfaces of the annular core insert members. The annular core insert members can readily be bonded to the ends of the main core body by axial insertion into the core because surface-to-surface contact of the bonding surfaces is improved and because adhesive bonding material is not scraped off during the insertion process. In addition, the core insert members have improved axial load capabilities.
Cette invention concerne un mandrin pour le bobinage ou le dévidage de matériaux en bande, par exemple du papier journal, lequel mandrin est constitué d'un long cylindre creux dont les extrémités sont pourvues d'éléments rapportés fixés à demeure par collage à la paroi interne du cylindre afin d'en réduire le diamètre intérieur aux extrémités. Ces éléments rapportés comportent une partie de forme essentiellement tronconique s'insérant dans une partie de forme correspondante aux extrémités du cylindre. Ils peuvent aisément être insérés axialement dans les extrémités du cylindre et collés, en raison des formes qui améliorent le contact entre les surfaces correspondantes et du procédé d'insertion qui n'enlève pas la colle des surfaces de contact. Les éléments d'extrémité rapportés possèdent une capacité de charge axiale améliorée.
Sim & Mcburney
Sonoco Products Company
LandOfFree
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