Patent ID: 7690906
Filing Date: 2010-04-06
Classification: B30B

Abstract:
1. A rotary powder compression molding machine, comprising: a turret which is rotatably mounted in a frame via a vertical shaft; dies, each having a die bore, which are mounted on the turret; an upper punch and a lower punch which are vertically slidably held above and below each of the dies, tips of the upper and lower punches being insertable in the die bore, the upper and lower punches being pressable and movable toward each other to compression-mold powder filled in the die bore between a lower end face of the upper punch and an upper end face of the lower punch, and powder lubricant jet means for jetting powder lubricant against the end faces of respective of the upper and lower punches and against the die bore prior to filling of the powder into the die bore, the powder lubricant jet means including wherein the charger device comprises first voltage application means for applying a first voltage to the first electrode, and second voltage application means for applying a second voltage to the second electrode, the second voltage being higher than the first voltage.