Reel mandrel with mandrel body free from recesses at its...

B - Operations – Transporting – 21 – C

Patent

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Details

B21C 47/30 (2006.01) B65H 18/04 (2006.01) B65H 75/24 (2006.01)

Patent

CA 2656076

The invention relates to a coiler mandrel (1) for coiling sheet metal, especially hot-rolled strips. Said mandrel comprises a mandrel base (2), an expansion bar (3) that can be adjusted relative to the mandrel base (2) in an axial direction (a) and a plurality of segments (4) which can be radially adjusted when the expansion bar (3) is axially displaced relative to the mandrel base (2). A plurality of brackets (5) are arranged between the expansion bar (3) and the segments (4) and are hinged to the expansion bar (3) and to the segments (4). The aim of the invention is to allow high-strength and ultra-strength materials to be coiled on such a coiler mandrel. For this purpose, at least one plurality of brackets (5) extend, when the coiler mandrel (1) is mounted, through recesses (6) in the mandrel base (2), said recesses being introduced into the mandrel base (2) in such a manner that the latter, at least on one of its axial ends (7) is free from recesses (6).

L'invention concerne un mandrin de bobinage (1) pour bobiner des tôles, notamment un feuillard laminé à chaud, comprenant un corps de mandrin (2), une tige extensible (3) déplaçable dans le sens axial (a) par rapport au corps de mandrin (2) et un nombre de segments (4), déplaçables dans le sens radial par rapport au corps de mandrin (2), par mouvement axial de la tige extensible (3). Un nombre de languettes (5) disposées de manière articulées sur la tige extensible (3) et sur les segments (4) sont montées entre la tige extensible (3) et les segments (4). L'invention vise à rendre un mandrin de ce type apte à bobiner des matériaux à résistance élevée et très élevée. A cet effet, il est prévu selon l'invention qu'au moins un nombre de languettes (5) passent à travers des cavités (6) pratiquées dans le corps du mandrin (2), lorsque le mandrin de bobinage (1) est monté, lesdites cavités étant aménagées dans le corps du mandrin (2), de sorte que ce dernier soit exempt de cavités (6), au moins au niveau de ses extrémités axiales (7).

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