PISTON UNIT FOR DIE CASTING MACHINE Russian patent published in 2004 - IPC

FIELD: casting.

SUBSTANCE: piston unit has piston, rod, and pipeline for supplying coolant. The pipeline is mounted with a spaced relation in the longitudinal passage of the rod and connected with the hollow shank of the disk fitted between the faces of the piston and rod. The disk is provided with lateral ports at an angle of ≤90⁰ to its longitudinal axis. The ports are in communication with the shank space and side ring space between the disk and piston. The back and front parts of the rod are provided with lateral ports which are in communication with its longitudinal passage. The sides of the piston, rod, and back face of the disk form a ring groove which is connected with the ring space between the disk and piston and longitudinal passage of the rod through the front ports. The ring groove receives the sealing member.

EFFECT: enhanced reliability.

2 cl, 3 dwg