Core sand removal from castings - in large vol. prodn. by electrohydraulic means

Sand, partic. cores, is removed from castings in large vol. prodn. by electro-hydraulic means. Castings, suspended from trolleys running on a conveyor rail, are pushed along by dogs on a moving chain. Above a cleaning tank a detached section of rail is connected to a movable frame, hanging from a supporting structure. When a casting is in position the assembly is disengaged from the chain, and lowered into the tank. Cams contacting the rim of the tank close pivoting clamp arms onto the casting and bring forward electrodes connected to a pulse generator. After cleaning, frame etc. are lifted out, the rail section reengages, and the clamp is released. By this invention, in large vol. prodn. castings do not have to be unhooked from the conveyor, and closing the clamps onto the casting also positions the electrodes. Multi-track installations are also possible. L'INVENTION CONCERNE LA FONDERIE.L'INSTALLATION FAISANT L'OBJET DE L'INVENTION EST CARACTERISEE NOTAMMENT EN CE QUE LE CADRE 9 EST LIE RIGIDEMENT AU TRONCON 10 DU RAIL-TRANSPORTEUR 5 DU CONVOYEUR AERIEN 6 A POUSSOIRS, QUI EST DISPOSE DIRECTEMENT AU-DESSUS DE LA CUVE 1 A BAIN DE LIQUIDE DE NETTOYAGE, LE DISPOSITIF D'AMENEE DES PIECES DE FONDERIE 7 DANS LA CUVE 1 COMPRENANT UN MECANISME DE DEPLACEMENT VERTICAL DU CADRE 9 CONJOINTEMENT AVEC L'ORGANE DE SUSPENSION 11 DU CONVOYEUR 6 ET AVEC LA PIECE DE FONDERIE 7, CE MECANISME PERMETTANT, LORSQUE LE CADRE 9 SE TROUVE EN POSITION HAUTE, DE JOINDRE AU CONVOYEUR 6 LEDIT TRONCON DE RAIL LIE AU CADRE 9.L'INSTALLATION PEUT ETRE UTILISEE POUR LA FABRICATION DE PIECES MOULEES EN GRANDES ET TRES GRANDES SERIES.