POWDER FILLING DEVICE WITH REDUNDANT POWDER COLLECTION MECHANISM, AND ROTARY COMPRESSION MOLDING MACHINE

摘要

A powdery material filling device provided with a redundant powdery material recovering mechanism which is capable of actively recovering and reusing a redundant powdery material even upon production of multi-layer tablets in which powdery materials for different layers must not be mixed is provided. The device comprising: a powdery material filling unit for filling the dies with powdery material; a redundant powdery material recovering unit located downstream of the powdery material filling unit, for recovering, from the surface of the rotating die table, a powdery material leaked out of the powdery material filling unit and the dies; a redundant powdery material conveying unit capable of conveying the powdery material recovered by the redundant powdery material recovering unit quasi-continuously in a predetermined constant amount of conveyance; a new powdery molding material supplying unit for supplying the device with a new powdery molding material; a pre-mixed powdery material reserving unit connected to the new powdery molding material supplying unit and the redundant powdery material conveying unit, for reserving the new powdery molding material supplied from the new powdery molding material supplying unit and the redundant powdery material conveyed by the redundant powdery material conveying unit; and a powdery material mixing unit for mixing and substantially uniformizing the new powdery molding material and the redundant powdery material transferred from the pre-mixed powdery material reserving unit, wherein the powdery material filling unit fills the dies with the powdery material that is mixed and substantially uniformized in the powdery material mixing unit.