# US 12,594,723 B2 · Powder distribution device and 3D printing device including same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,594,723 B2 - Document ID: US12594723B2 - Status: Granted - Kind: B2 - Application number: 17/758,292 - Filed: 2020-12-30 - Published: 2023-02-09 - Granted: 2026-04-07 - Earliest claimed: 2019-12-30 - Assignees: Samyoung Machinery Co., Ltd. - Applicants: Samyoung Machinery Co., Ltd. - Inventors: Kuk Hyun Han; Yong Sun Choi - Web page: https://patentgrep.com/patent/US12594723B2 ## CPC - B29C 64/329: using hoppers - B22F 12/50: Means for feeding of material, e.g. heads - B22F 12/52: Hoppers - B22F 12/67: Blades - B29C 64/205: Means for applying layers - B29C 64/321: Feeding - B33Y 40/00: Auxiliary operations or equipment, e.g. for material handling - B22F 10/28: Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] - B22F 10/37: of powder bed aspects, e.g. density - B33Y 30/00: Apparatus for additive manufacturing; Details thereof or accessories therefor - Y02P 10/25: Process efficiency - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract The present invention relates to a powder distribution device that can uniformly distribute powder using powder flow due to the weight of the powder itself, and a 3D printing device including the same. The powder distribution device of the present invention comprises a powder distribution unit that includes: an outer frame having an empty powder material inlet port; and at least one distribution plate disposed inside the outer frame to disperse introduced powder, wherein the powder can be broken down using the powder flow without additional power from a feed screw, a motor, or the like. ## Claims ### Claim 1 A powder distribution device for supplying powder to a powder-based 3D printing device, the powder distribution device comprising: a powder distribution unit including an outer frame having a powder material inlet port and a plurality of distribution plates disposed in the outer frame and distributing introduced powder, wherein the plurality of distribution plates include a first distribution plate disposed below the powder material inlet port, and a pair of second distribution plates respectively disposed below both ends of the first distribution plate, wherein each of the first distribution plate and the pair of second distribution plates are spaced apart by a predetermined interval from a powder discharge surface from which powder is discharged, and wherein each of the first distribution plate and the pair of second distribution plates has two inclined side surfaces that guide powder discharged from the powder discharge surface to fall to lower sides of the respective first distribution plate and pair of second distribution plates, wherein each inclined side surface of the first distribution plate and the pair of second distribution plates includes a plurality of through-holes formed so that the powder can fall through each of the first distribution plate and the pair of second distribution plates to a lower side, and a diameter of the plurality of through-holes gradually increases in a downward direction along the length of each of the inclined side surfaces, and wherein center portions of the pair of second distribution plates are spaced apart horizontally by a predetermined interval from the opposite ends of the first distribution plate, and wherein the center portions are positioned to distribute the powder falling from the first distribution plate. ### Claim 2 (depends on 1) The powder distribution device of claim 1, wherein a center line of each of the plurality of through-holes formed through the inclined surfaces of the first distribution plate and the pair of second distribution plates is disposed to be perpendicular to the respective inclined surface or disposed to be parallel to a center line of the powder material inlet port. ### Claim 3 (depends on 1) The powder distribution device of claim 1, wherein a falling position of powder is adjusted by adjusting an angle between a central line of the plurality of through-holes formed in the inclined surfaces of the first distribution plate and the pair of second distribution plates and a center line of the powder material inlet port. ### Claim 4 (depends on 1) The powder distribution device of claim 1, wherein the plurality of through-holes formed in the inclined surfaces of the first distribution plate and the pair of second distribution plates has a circular, elliptical, or polygonal shape. ### Claim 5 (depends on 1) The powder distribution device of claim 1, wherein the first distribution plate and the pair of second distribution plates are detachably coupled to the outer frame. ### Claim 6 (depends on 1) The powder distribution device of claim 1, wherein at least one surface of the outer frame is formed of a transparent material, so that a distribution form of powder may be checked from outside.