Patent ID: 6354359
Filing Date: 2002-03-12
Classification: B22D

Abstract:
A method of cleaning and lubricating an injection sleeve and plunger tip during a fill and injection cycle of a cold chamber die casting machine, the plunger tip having an annular generally arcuate recess, lubricating nozzles, lubricating conduits and scrap exhaust conduits,comprising releasing pressurized air into the annular generally arcuate recess in the plunger tip upon completion of the injection cycle, releasing a mixture of pressurized air and lubricant through the annular generally arcuate recess in the plunger tip onto the injection sleeve during a withdrawal cycle, terminating release of the mixture of pressurized air and lubricant into the annular generally arcuate recess in the plunger tip at the termination of the withdrawal cycle.