Nozzle and layered object manufacturing apparatus

Patent metadata

Field	Value
Publication number	US-10543644-B2
Application number	US-201415114334-A
Country	US
Kind code	B2
Filing date	Sep 17, 2014
Priority date	Mar 18, 2014
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

A layered object manufacturing apparatus includes a nozzle that is provided with a body having an opening from which a laser beam is output and powder of a material is ejected.

First claim

The invention claimed is:

1. A nozzle for a layered object manufacturing apparatus, the nozzle comprising a body, wherein
the body includes a first recess that opens to outside of the body, an internal bottom surface and an internal circumferential surface of the first recess, an output port from which an energy beam is output, and an ejection port from which powder of a material is ejected,
the output port is provided on the internal bottom surface and opens to the first recess through which the energy beam passes,
the ejection port is formed around the output port and opens to the first recess through which the powder passes, and
an internal diameter of the internal circumferential surface becomes gradually smaller in a direction in which the energy beam is output from the output port to outside of the body through the first recess.

2. The nozzle according to claim 1 , wherein
the body includes a gas inlet from which gas is supplied to outside of the body and a gas outlet from which gas is suctioned from outside of the body,
the gas inlet has an annular shape surrounding the first recess, and
the gas outlet has an annular shape and is located between the first recess and the gas inlet.

3. The nozzle according to claim 2 , wherein,
the body includes an annular second recess that opens to outside of the body and surrounds the first recess, and
the gas inlet and the gas outlet open to the second recess.

4. The nozzle according to claim 1 , wherein the ejection port is provided outside of the output port.

5. The nozzle according to claim 1 , wherein the ejection port is provided in a manner surrounding the output port.

6. The nozzle according to claim 1 , wherein the ejection port is provided in plurality.

7. The nozzle according to claim 1 , wherein the ejection port opens in contact with the internal circumferential surface.

8. The nozzle according to claim 1 , wherein the internal circumferential surface is provided with a guide for guiding the powder in a swirling manner along the internal circumferential surface.

9. A layered object manufacturing apparatus comprising:
a light source that generates an energy beam;
the nozzle according to claim 1 ;
a supplying unit that supplies the material to the nozzle; and
a moving mechanism that moves a manufactured object and the nozzle relatively to each other.

Assignees

• Toshiba Kk

Inventors

• Shimoyama Sadao

Classifications

• B05B7/10 Primary

  producing a swirling discharge · CPC title

• B29C64/393

  for controlling or regulating additive manufacturing processes · CPC title

• B05B7/16

  incorporating means for heating {or cooling} the material to be sprayed {(spraying by means of explosions B05B7/0006)} · CPC title

• B05B14/10

  the excess material being particulate (for spray booths B05B14/48) · CPC title

• B05B7/1646

  the material to be sprayed and the atomising fluid being heated by the same source of heat, without transfer of heat between atomising fluid and material to be sprayed · CPC title