Diecasting machine and plunger lubricating method

Details Diecasting machine and plunger lubricating method Diecasting machine and plunger lubricating method

2006-05-09

2006-05-09

Kerns, Kevin (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S149000, C164S312000, C164S158000, C164S267000

Reexamination Certificate

active

07040375

ABSTRACT:
A diecasting machine comprising a movable and a stationary die half which, when closed, define a die cavity. The diecasting machine further comprises a filling chamber for receiving liquid metal, plunger, a slidingly displaceable inside the filling chamber and mounted on a plunger rod, for ejecting the liquid metal from the filling chamber and for injecting it into the die cavity, and a device for supplying lubricants for the plunger in the filling chamber. At least one pipe or one nozzle having an opening directed towards the plunger is fastened on the plunger rod. The pipe or the nozzle is linked with a reservoir for the lubricant via a supply line. A water-based releasing agent is sprayed into the intermediate space between the plunger rod and the cylindrical inner wall of the filling chamber in the direction of the plunger during a period in which the plunger is at its final lift position after the liquid metal has been injected into the die cavity.

REFERENCES:
patent: 2683060 (1954-07-01), Wise et al.
patent: 4257902 (1981-03-01), Singer
patent: 5028366 (1991-07-01), Harakal et al.
patent: 5601774 (1997-02-01), Kohama et al.
patent: 6354359 (2002-03-01), Perrella et al.

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