NOZZLE, AND ADDITIVE FABRICATION DEVICE

WIPO Patent Application WO/2021/020011

A1

A nozzle according to an embodiment of the present invention is provided with a nozzle member, a first inner surface, and a second inner surface. The nozzle member has an end portion in a first direction, and is provided with: a first passage; a second passage which encloses the first passage, and which discharges powder and fluid from the end portion; a diffusion chamber which is separated from the end portion, and which supplies the powder and the fluid into the second passage; and a feed passage for feeding the powder and the fluid into the diffusion chamber. The first inner surface includes a conical first curved surface which is provided in the nozzle member and which has a diameter that decreases toward the end portion. The second inner surface includes a conical second curved surface which is provided in the nozzle member, faces the first inner surface across a gap, and has a diameter that decreases toward the end portion, wherein the second passage is formed between the first curved surface and the second curved surface, and the diffusion chamber is formed between the second inner surface and the first inner surface.

FUJIMAKI SHIMPEI (JP)
FUKASE YASUSHI (JP)

PCT/JP2020/025866

February 04, 2021

July 01, 2020

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TECH RES ASSOCIATION FUTURE ADDITIVE MANUFACTURING (JP)
SHIBAURA MACHINE CO LTD (JP)

B33Y10/00; B29C64/141; B29C64/209; B33Y30/00

WO2016151781A1

2016-09-29

JP2019059114A	2019-04-18
JP2015196249A	2015-11-09
JPH10501463A	1998-02-10

SAKAI INTERNATIONAL PATENT OFFICE (JP)

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