US 12,403,624 B2
Additive manufacturing apparatus and method of manufacturing three-dimensionally shaped object
Koji Kitani, Tokyo (JP); and Tsutomu Miki, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 21, 2021, as Appl. No. 17/557,278.
Application 17/557,278 is a continuation of application No. PCT/JP2020/025065, filed on Jun. 25, 2020.
Claims priority of application No. 2019-123160 (JP), filed on Jul. 1, 2019; and application No. 2019-123161 (JP), filed on Jul. 1, 2019.
Prior Publication US 2022/0111553 A1, Apr. 14, 2022
Int. Cl. B28B 1/00 (2006.01); B22F 10/28 (2021.01); B22F 10/73 (2021.01); B22F 12/60 (2021.01); B29C 64/153 (2017.01); B29C 64/20 (2017.01); B29C 64/214 (2017.01); B29C 64/35 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01)
CPC B28B 1/001 (2013.01) [B22F 10/28 (2021.01); B22F 10/73 (2021.01); B22F 12/60 (2021.01); B29C 64/153 (2017.08); B29C 64/20 (2017.08); B29C 64/214 (2017.08); B29C 64/35 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12)] 21 Claims
OG exemplary drawing
 
1. An additive manufacturing apparatus comprising:
a powder-layer forming portion configured to form a powder layer;
an energy beam source configured to irradiate the powder layer with an energy beam; and
a shielding portion configured to reduce powder reaching the powder-layer forming portion, the powder being scattered from the powder layer when the powder layer is irradiated with the energy beam by the energy beam source, and the shielding portion being capable of changing a position or a posture,
wherein the shielding portion is configured to take a straight posture when the powder layer is irradiated with the energy beam by the energy beam source,
wherein the shielding portion is configured to take a bent posture when the powder-layer forming portion forms the powder layer,
wherein the shielding portion is configured to change from the straight posture to the bent posture without interfering with the powder-layer forming portion, wherein the shielding portion includes a joint portion that is located higher than a top of the powder-layer forming portion, and the joint portion is configured to rotate to change the shielding portion from the straight posture to the bent posture, and
wherein the additive manufacturing apparatus is configured such that, when the shielding portion takes the bent posture, the shielding portion is located between the powder attached to the shielding portion and the powder-layer forming portion.