Device for manufacturing three-dimensional shaped object and method for manufacturing three-dimensional shaped object

Patent metadata

Field	Value
Publication number	US-2020122356-A1
Application number	US-201916658212-A
Country	US
Kind code	A1
Filing date	Oct 21, 2019
Priority date	Oct 22, 2018
Publication date	Apr 23, 2020
Grant date	—

Abstract

A device for manufacturing a three-dimensional shaped object includes a table on which a layer of granulated powder is stacked, a layer formation portion that forms the granulated powder on the table into a layer having a predetermined thickness, a compression unit configured to compress a first region in the layer, a processing unit that processes the formation region of the three-dimensional shaped object in the layer, and a control unit that controls the compression unit to form the first region in which the granulated powder are crushed, and the second region in which the granulated powder are not crushed.

First claim

What is claimed is:

1 . A device for manufacturing a three-dimensional shaped object comprising:
a table on which a layer of granulated powder is stacked; a layer formation portion that forms the granulated powder on the table into a layer having a predetermined thickness; a compression unit configured to compress the layer below the predetermined thickness; a processing unit that processes a formation region of a three-dimensional shaped object in the layer; and a control unit that controls the compression unit so as to form a first region in which the granulated powder is crushed, and a second region in which the granulated powder is not crushed, and the formation region is formed in the first region.

2 . The device for manufacturing a three-dimensional shaped object according to claim 1 , further comprising:
a recovery unit that recovers the granulated powder in the second region.

3 . The device for manufacturing a three-dimensional shaped object according to claim 2 ,
wherein the recovery unit includes a sieve that divides the granulated powder which is crushed and the granulated powder which is not crushed.

4 . The device for manufacturing a three-dimensional shaped object according to claim 1 ,
wherein the processing unit is a binder applying unit that forms a shape of the three-dimensional shaped object by applying a binder to the formation region.

5 . The device for manufacturing a three-dimensional shaped object according to claim 1 ,
wherein the processing unit is a laser irradiation unit that forms a shape of the three-dimensional shaped object by irradiating the formation region with a laser.

6 . A method for manufacturing a three-dimensional shaped object comprising:
a layer formation step of forming granulated powder into a layer having a predetermined thickness on a table on which a layer of the granulated powder is stacked; a compression step of compressing a first region in the layer; and a processing step of processing the formation region in the first region, wherein in the compression step, control is performed so as to crush the granulated powder in the first region, and so as not to crush the granulated powder in a second region in which the three-dimensional shaped object is not formed in the layer.

7 . The method for manufacturing a three-dimensional shaped object according to claim 6 , further comprising:
a recovery step of recovering the granulated powder in the second region in a recovery unit.

8 . The method for manufacturing a three-dimensional shaped object according to claim 7 ,
wherein, in the layer formation step, the layer having a thickness of a first distance is formed by lowering the table interposed between wall portions facing each other, of which positions of top portions have the same height, to a first position below by the first distance from the position of the top portion, and moving a roller, which is movable in parallel with the table, at least from one of the top portions to the other, in the compression step, the first region is compressed by lowering the roller from the position of the top portion by a second distance and moving the roller over a range of the first region in parallel with the table or by raising the table to a second position above by the second distance from the first position and moving the roller over the range of the first region in parallel with the table, and in the recovery step, the granulated powder in the second region is recovered by disposing the table on the second position, and moving the roller at least from one of the top portions to the other.

9 . The method for manufacturing a three-dimensional shaped object according to claim 6 ,
wherein the processing step is a binder application step of forming a shape of the three-dimensional shaped object by applying a binder to the formation region.

10 . The method for manufacturing a three-dimensional shaped object according to claim 6 ,
wherein the processing step is a laser irradiation step of forming a shape of the three-dimensional shaped object by irradiating the formation region with a laser.

11 . The method for manufacturing a three-dimensional shaped object according to claim 6 ,
wherein in the processing step, a wall is formed between the first region and the second region in the layer.

Assignees

• Seiko Epson Corp

Inventors

• Hideshima Yasutoshi
• Nakamura Hidefumi

Classifications

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B23K35/0244 Primary

  Powders, particles or spheres; Preforms made therefrom · CPC title

• C04B35/63488

  Polyethers, e.g. alkylphenol polyglycolether, polyethylene glycol [PEG], polyethylene oxide [PEO] · CPC title

• B22F2304/10

  Micron size particles, i.e. above 1 micrometer up to 500 micrometer · CPC title