One-piece inner nozzle and clamping device for holding such...

B - Operations – Transporting – 22 – D

Patent

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Details

B22D 41/56 (2006.01)

Patent

CA 2411170

The present invention relates to a clamping device including at least two assemblies each composed of a clamp (10) pivoting about a horizontal axis (11) and fitted with a groove (12) receiving a shoe (13) generally cylindrical in shape incorporating a flat surface (14) parallel to the axis of said cylinder, said shoe being capable of pivoting in the groove. The present invention also relates to a one-piece inner nozzle (2) particularly adapted for use with this clamping device. The one-piece inner nozzle according to the invention is thus composed of a tubular part (6) defining a pouring channel (4) and a flat part or plate (7) providing contact with the downstream component (8) of the pouring channel. The characteristic of the nozzle according to the invention is that the plate (7) is generally shaped as a prism which can be defined by its polygon-shaped bases and the prismatic surface which they intersect perpendicularly, the said polygonal bases comprising an upper base (22), whose displacement within the prismatic surface defines the interface with the tubular part (6) and a lower base (21) parallel to the upper base and, on either side of the upper base, two sides (23, 23') forming an obtuse angle (.alpha.) with the upper base (22).

L'invention concerne un dispositif de serrage qui comprend au moins deux ensembles composés chacun d'une bride (10) pivotant autour d'un axe horizontal (11) et pourvue d'une rainure (12) recevant un sabot (13) généralement de forme cylindrique, présentant une surface plate (14) parallèle à l'axe de ce cylindre, ce sabot pouvant pivoter dans la rainure. Cette invention concerne également une buse de coulée en une pièce (2) particulièrement adaptée pour être utilisée avec ce dispositif de serrage. Cette buse de coulée en une pièce est composée d'une partie tubulaire (6) qui définit un canal de coulée (4) et une partie plate ou plaque (7) qui permet le contact avec un composant en aval (8) du canal de coulée. Cette buse est caractérisée en ce que la plaque (7) est généralement en forme de prisme qui peut être défini par ses bases polygonales et sa surface prismatique qu'elles coupent perpendiculairement, ces bases polygonales comprenant une base supérieure (22), dont le déplacement dans la surface prismatique définit l'interface avec la partie tubulaire (6), et une base inférieure (21) parallèle à la base supérieure et, sur chaque côté de la base supérieure, deux côtés (23, 23') formant un angle obtus (.alpha.) avec cette base supérieure (22).

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