Patent ID: 6428300
Filing Date: 2002-08-06
Classification: B29C,B29L,H01L

Abstract:
A mold for encapsulating a workpiece comprising:a pair of opposed cavity plates, the cavity plates having corresponding inner mold surfaces on opposite sides of a mold cavity having a first volume, each cavity plate having an inclined ramp outer surface; a pair of opposed drive plates, each drive plate having an inclined ramp inner surface, the inclined ramp inner surfaces on the opposed drive plates defining a tapered clamp cavity bearing against the inclined ramp outer surfaces on the opposed drive plates; and the cavity plates and drive plates being slidingly mounted relative to each other to reduce the volume of the mold cavity to a second volume, less than the first volume, by moving the cavity plates into the tapered clamp cavity to reduce the distance between the opposed mold surfaces of the mold cavity.