公开(公告)号：US20200215756A1

公开(公告)日：2020-07-09

申请号：US16823161

申请日：2020-03-18

Applicant: Aspect Inc.

Inventor： Masashi HAGIWARA

IPC: B29C64/295 ,  B33Y30/00 ,  B29C64/255

Abstract: Provided is a powder bed fusion apparatus that further reduces the difference in temperature between a powder material at a peripheral region in a fabrication container and a powder material at a center region in the fabrication container during preheating. The powder bed fusion apparatus comprises: a container that has a quadrangular shape as viewed from above and has an opening in an upper surface; a table which is disposed in the opening of the container and onto which a powder material is supplied through the upper surface; and a plurality of heaters that are attached to each of corner portions of sides of the container to heat the powder material on the table through the corner portions.

公开(公告)号：US20220219389A1

公开(公告)日：2022-07-14

申请号：US17603786

申请日：2020-04-14

Applicant: Konica Minolta, Inc. ,  ASPECT, INC.

Inventor： Masaharu SHIRAISHI ,  Kenji GOTO ,  Masashi HAGIWARA ,  Yusei KIMURA

IPC: B29C64/153 ,  B29C64/268 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C08J3/12

Abstract: A resin powder for three-dimensional molding includes ethylene-propylene copolymer particles. The volume average particle size of the ethylene-propylene copolymer particles is within a range of 5 to 200 μm. The ethylene content molar ratio (ethylene/(ethylene+propylene)) in the ethylene-propylene copolymer particles is within a range of 0.001 to 0.04. The melt flow rate (MFR) is within a range of 3 to 40 g/10 min at 230° C.

公开(公告)号：US20210008795A1

公开(公告)日：2021-01-14

申请号：US17037257

申请日：2020-09-29

Applicant: Aspect Inc.

Inventor： Masashi HAGIWARA ,  Yusei KIMURA

IPC: B29C64/153 ,  B29C64/314 ,  B29C64/268 ,  B33Y10/00

Abstract: Provided are a powder bed fusion model having improved model strength and a method of fabricating the same. Applying a laser beam to a layer of a resin powder (8) includes: applying the laser beam with a first energy to a modeling area (ma1) in the first layer of the resin powder from the bottom among n layers of the resin powder, in the modeling area (ma2, ma3, man−2, man−1) in each of the second to (n−1)-th layers of the resin powder, applying the laser beam with the first energy to a projecting portion (PA2, PA3, PAn−1) projecting outward from at least one of the modeling areas in the vertically adjacent layers of the resin powder and to an overlapping portion (OA2, OA3, OAn−1) overlapping the modeling areas in the adjacent layers of the resin powder, lying on the inner side of the projecting portion, and having at least a width equal to the thickness of a layer of the resin powder, and applying the laser beam with a second energy lower than the first energy to a center portion on the inner side of the projecting portion and the overlapping portion; and applying the laser beam with the first energy to the modeling area (man) in the n-th layer of the resin powder.

公开(公告)号：US20150050463A1

公开(公告)日：2015-02-19

申请号：US14265794

申请日：2014-04-30

Applicant: Aspect Inc.

Inventor： Shizuka NAKANO ,  Toru SHIMIZU ,  Masashi HAGIWARA ,  Masahiro SASSA

IPC: B28B17/00 ,  B23K26/34 ,  B23K26/00 ,  B28B1/00 ,  B22F3/105

CPC classification number: B28B17/0081 ,  B22F3/1055 ,  B22F2003/1056 ,  B23K26/082 ,  B23K26/342 ,  B23K26/354 ,  B28B1/001 ,  B28B17/0063 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y80/00 ,  C04B35/04 ,  C04B35/10 ,  C04B35/14 ,  C04B35/48 ,  C04B35/565 ,  C04B35/581 ,  C04B35/584 ,  C04B2235/6026 ,  C04B2235/665 ,  Y02P10/295 ,  Y10T428/24777

Abstract: A powder rapid prototyping method includes steps of forming a thin layer 35a of a powder material, irradiating a heating energy beam to a specific region of the thin layer 35a of the powder material to thereby form a preliminary heating layer 35c whose temperature is elevated, and irradiating the heating energy beam to an inside region of the preliminary heating layer 35c whose temperature is elevated to melt and then solidify the thin layer 35a of the powder material to thereby form a solidified layer, wherein the respective steps are repeatedly implemented to fabricate a rapid prototyping model 51, 52.

Abstract translation: 粉末快速成型方法包括以下步骤：形成粉末材料的薄层35a，将加热能量束照射到粉末材料的薄层35a的特定区域，从而形成温度升高的预热层35c， 将加热能量束照射到温度升高的预热层35c的内部区域熔融，然后固化粉末材料的薄层35a，从而形成固化层，其中各个步骤被重复地实施以制造快速 原型模型51,52。

公开(公告)号：US20140035205A1

公开(公告)日：2014-02-06

申请号：US13721482

申请日：2012-12-20

Applicant: ASPECT INC.

Inventor： Masashi HAGIWARA ,  Masahiro SASSA

IPC: B29C67/00

CPC classification number: B29C67/0077 ,  B22F3/105 ,  B23K26/14 ,  B23K26/34 ,  B29C35/00 ,  B29C35/08 ,  B29C64/00 ,  B29C64/153 ,  B29C67/0051 ,  B29C2035/0283 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A powder rapid prototyping apparatus includes a decompressable chamber, a thin layer forming section which supplies powder material from a powder material housing container provided in the chamber to form a thin layer of the powder material, an energy beam source for heating which outputs energy beam for heating which sinters or melts and models the thin layer of the powder material, and a control section which controls the modeling, wherein the control section exposes the powder material to the decompressed atmosphere before starting modeling, and houses the powder material in the powder material housing containers in a divided manner.

Abstract translation: 粉末快速成型装置包括减压室，薄层形成部分，其从设置在室中的粉末材料容纳容器供应粉末材料以形成粉末材料的薄层，用于加热的能量束源，其将能量束输出 对粉末材料的薄层进行烧结或熔融成型的加热装置和控制成型的控制部，其中控制部在开始建模之前将粉末材料暴露于减压气氛中，并将粉末材料容纳在粉末材料壳体 容器分开。