Manufacturing device for three-dimensional laminate shaped object

Patent metadata

Field	Value
Publication number	US-9486961-B2
Application number	US-201514712934-A
Country	US
Kind code	B2
Filing date	May 15, 2015
Priority date	May 15, 2014
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

The manufacturing device manufactures a laminate shaped object by supplying material powder to a molding chamber to form a powder layer and irradiating a surface of the powder layer with a beam to sinter the powder layer. The molding chamber has a molding space where the material powder is irradiated with the beam and the laminate shaped object is formed, and a non-molding space which is outside the molding space and in which the laminate shaped object is not formed. An elastic member is disposed in the non-molding space, and the elastic member extends or contracts to change volume along with change of a relative position of the table in a vertical direction.

First claim

What is claimed is:

1. A manufacturing device of a three-dimensional laminate shaped object, manufacturing a laminate shaped object by supplying material powder to a molding chamber to form a powder layer and irradiating a surface of the powder layer with a beam to sinter the powder layer, wherein the molding chamber comprises a table that is vertically movable and a peripheral wall that is disposed to surround the table, and the molding chamber is configured such that a relative positional relation between the table and the peripheral wall in a height direction is changeable,
wherein the molding chamber comprises a molding space, in which the material powder is irradiated with the beam and the laminate shaped object is formed, and a non-molding space, which is outside the molding space and in which the laminate shaped object is not formed, and
wherein an elastic member is disposed on an upper surface of the table in the non-molding space, and the elastic member extends or contracts to change volume along with change of a relative position of the table in a vertical direction.

2. The manufacturing device of the three-dimensional laminate shaped object according to claim 1 , wherein the elastic member comprises a mountain fold portion and a valley fold portion that are alternately arranged to form a bellows shape.

3. The manufacturing device of the three-dimensional laminate shaped object according to claim 2 , wherein the elastic member is disposed along at least two corners of the peripheral wall.

4. The manufacturing device of the three-dimensional laminate shaped object according to claim 2 , wherein when the elastic member is viewed from above, an area of the valley fold portion is 0.35 times or less an area of the mountain fold portion.

5. The manufacturing device of the three-dimensional laminate shaped object according to claim 1 , wherein an upper end of the elastic member is disposed on an upper end portion of the molding chamber.

6. The manufacturing device of the three-dimensional laminate shaped object according to claim 1 , wherein the elastic member is removably attached.

Assignees

• Sodick Co Ltd

Inventors

• Okazaki Shuji

Classifications

• B29C64/153 Primary

  using layers of powder being selectively joined, e.g. by selective laser sintering or melting · CPC title

• B33Y30/00 Primary

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

• B29C64/245

  Platforms or substrates (support structures intended to be sacrificed after manufacture B29C64/40) · CPC title

• B22F12/222

  for motion along a direction orthogonal to the plane of a layer · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title