Multi-piece piston for a cold chamber casting machine

Details Multi-piece piston for a cold chamber casting machine Multi-piece piston for a cold chamber casting machine

B - Operations, Transporting

22

D

B22D 17/20 (2006.01)

Patent

CA 2625099

A multi-piece piston (1) is disclosed, for fixing to the high pressure side end (3) of a piston rod (5) running axially in a casting cylinder (7) of a cold chamber casting machine. The piston comprises a piston crown (9) forming a piston front face (13) on the high pressure side and a piston body (15) in the form of a bush connected to the piston crown (9) on the low pressure side. The piston body (15) can be connected to the piston crown (9) by means of fixing screws (23) to form a module. Complementary bayonet looking means (25, 27) are provided, for axial fixing of the piston (1) to the end (3) of the piston rod (5), on the piston crown (9) and the end (3).

L'invention concerne un piston en plusieurs parties (1) destin à être fixé sur la zone terminale côté haute pression (3) d'une tige de piston (5) axialement mobile dans un cylindre de coulée (7) d'une machine de coulée à chambre froide. Le piston comprend un plateau de piston (9) faisant office de paroi frontale (13) côté haute pression et un corps de piston (15) se présentant sous forme de douille et raccordé côté basse pression au plateau de piston (9). Le corps de piston (15) peut être relié au plateau de piston (9) par une vis de fixation (23) pour former une unité de construction. Le plateau de piston (9) et la zone terminale (3) sont pourvus d'organes de verrouillage à baïonnettes (25, 27) mutuellement associés et permettant de fixer axialement le piston (1) à la zone terminale (3) de la tige de piston (5).

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