B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 75/22 (2006.01) B65H 75/18 (2006.01)
Patent
CA 2121277
A tubular core assembly for winding or unwinding of sheet material, such as newsprint or Rotogravure Print, is provided wherein the opposed ends of an elongate cylindrical core are provided with inside diameter-reducing annular end members. The inside diameter-reducing annular end members are mechanically interlocked with a central core body which is preferably formed by multiple wraps of a paperboard material. Mechanical interlocking is accomplished by a plurality of axial grooves in the bodywall of the central core body member and a plurality of axially extending tongue members on the annular end members which are received in the grooves of the central core body member in interlocking relationship therewith. Because of the mechanical interlocking relationship between the inside diameter-reducing annular end members and the central core body member, the inside diameter-reducing annular end members are secured to the central core body member in positive circumferential and axial locking relationship.
Tube-mandrin pour le bobinage ou le débobinage d'un matériau en bande, tel du papier journal ou du papier à rotogravure; les extrémités opposées du cylindre de forme allongée sont dotées d'éléments annulaires utilisés pour réduire le diamètre du tube-mandrin. Les éléments annulaires sont en liaison mécanique avec le noyau central du tube-mandrin; le noyau, de préférence, est formé de multiples couches de carton enroulé. La liaison mécanique est assurée par une pluralité de rainures axiales pratiquées dans la paroi du noyau central en correspondance avec une pluralité de languettes radiales formées sur les éléments annulaires pour un assemblage par embouvetage. La liaison mécanique par embouvetage des éléments annulaires et du noyau du tube-mandrin assure un verrouillage circonférentiel et axial des composants.
Sim & Mcburney
Sonoco Products Company
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