CPC B05C 19/04 (2013.01) [B22F 10/28 (2021.01); B22F 12/52 (2021.01); B22F 12/55 (2021.01); B23K 15/0026 (2013.01); B23K 15/0086 (2013.01); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12); B22F 10/14 (2021.01); B22F 10/73 (2021.01); B22F 12/44 (2021.01); B22F 12/49 (2021.01)] | 19 Claims |
1. A powder supply device comprising:
a hopper accommodating powder;
a cylindrical roller provided below the hopper and rotatable around a rotational axis; and
a wall surface facing a peripheral surface of the roller and storing the powder in a space between the roller and the wall surface, wherein
the powder stored between the roller and the wall surface is moved in a rotation direction of the roller and dropped by the roller rotating,
a plurality of groove portions extending in an axial direction are formed in the peripheral surface of the roller,
at least one of the plurality of groove portions is formed such that a capacity allowing the powder to be accommodated changes in the axial direction; and
stuffing material selectively fitted into the at least one of the plurality of grooves that reduces the capacity thereof, wherein the stuffing material is configured to be fixed at any axial position in the at least one of the plurality of grooves.
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