Patent ID: 7980277

Claim:
A powder filling device comprising: a measuring tank having a powder discharge port; a filling amount control unit disposed near the powder discharge port; and an auxiliary container having an opening disposed on an underside of the powder discharge port of the measuring tank which faces downward, wherein a powder externally delivered into the measuring tank is discharged from the powder discharge port into a powder filling container disposed on an underside of the auxiliary container while a filling amount of the powder is controlled by the filling amount control unit, and the powder is temporarily dropped to the auxiliary container, and further dropped to the powder filling container so that the powder filling container is filled up with the powder, wherein the filling amount control unit includes a filter material which passes a gas and does not pass the powder, the powder being drawn to the filter material via a gas suction unit communicating with the filling amount control unit, so that the filling amount of the powder is controlled according to a degree of suction of the powder by the gas suction unit, wherein the filter material is fixed to close a through hole formed in a tubular body part of the auxiliary container, and wherein a wall, which does not have a gas leakage, is disposed around an outside of the filter material so that a space part is formed.