Device and method for powder distribution and additive manufacturing method using the same

Patent metadata

Field	Value
Publication number	US-9533350-B2
Application number	US-201213460259-A
Country	US
Kind code	B2
Filing date	Apr 30, 2012
Priority date	Jan 20, 2012
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

The present disclosure provides a device and method for powder distribution and an additive manufacturing method, wherein different size or kind of powders could be chosen to be accommodated within a receptacle. The receptacle can uniformly mix the powder by a rotation movement, pour out the powders by the rotation movement and distribute the powders for forming a layer by a translation movement. In another embodiment, the receptacle further comprises a heating element for preheating the powders. Not only can the present disclosure uniformly mix the powders so as to reduce the thermal deformation and distribute the powder layer compactly, but also can the present disclosure distribute different kinds of powder in different layer so as to increase the diversity in additive manufacturing.

First claim

What is claimed is:

1. A powder distribution method, comprising the steps of:
using a translation driver for driving a receptacle to move to a first position;
using a feeder to provide at least one powder to the receptacle at the first position;
using the translation driver for driving the receptacle to move to a second position;
using a rotation driver for driving the receptacle to rotate and thus causing the powder received in the receptacle to be poured out from the receptacle and deposited on the second position;
using the rotation driver for driving the receptacle to rotate to a specific condition in which the receptacle is positioned for allowing a portion of an outer shell of the receptacle to engage with a pile of the at least one powder while the receptacle is being brought along to move in a linear translation movement, wherein the portion of the outer shell of the receptacle includes one of a curved surface or a flat surface; and
causing the receptacle to be driven to move by the translation driver to contact and engage the poured-out powder with the portion of the outer shell of the receptacle while moving the outer shell of the receptacle across the poured-out powder, thus distributing the poured-out powder into a layer on a working area.

2. The powder distribution method of claim 1 , wherein the feeder is further configured with at least one container, and each container is further formed with at least one feeding port.

3. The powder distribution method of claim 1 , wherein the feeder is further configured with at least one container and rotary table in a manner that each said container is disposed on the rotary table for selectively causing one container selected from the at least one container to be rotated to a position corresponding to the receptacle.

4. The powder distribution method of claim 1 , wherein the feeder further comprises:
a frame, formed with an internal space that is being divided into a plurality of accommodating slots to be used for storing different kinds of powder as each accommodating slot is further formed with a feeding port; and
a rotary element, coupled to the frame for providing power to the frame so as to drive the frame to rotate.

5. The powder distribution method of claim 4 , wherein a cross section of the frame is substantially a shape selected from the group consisting of: a circle, a polygon.

6. The powder distribution method of claim 1 , further comprising the step of:
using a heating element to perform a heating process for heating the at least one powder while using a temperature sensor to measure a temperature of the heating process.

7. The powder distribution method of claim 6 , further comprising the step of:
using the rotation driver to drive the receptacle to rotate during the heating process so as to cause the at least one powder to be heated uniformly.

8. The powder distribution method of claim 1 , further comprising the step of:
using the rotation driver to drive the receptacle to rotate so as to cause a plurality of different kinds of powders to be mixed fully and uniformly.

9. A powder distribution method, comprising the steps of:
using a translation driver for driving a receptacle to move to a first position;
using a feeder to provide at least one powder to the receptacle at the first position;
using the translation driver for driving the receptacle to move to a second position;
using a rotation driver for driving the receptacle to rotate and thus causing the powder received in the receptacle to be poured out from the receptacle and deposited on the second position;
using the rotation driver for driving the receptacle rotate to a specific condition in which the receptacle is positioned for allowing a portion of an outer shell of the receptacle to engage with a pile of the at least one powder while the receptacle is being brought along to move in a linear translation movement, wherein the portion of the outer shell of the receptacle includes one of a curved surface or a flat surface,
causing the receptacle to be driven to move by the translation driver to contact and engage the poured-out powder with the portion of the outer shell of the receptacle while moving the receptacle across the poured-out powder, thus distributing the poured-out powder into a layer on a working area; and
using a projection of a processing light that is produced from a light source to perform an optical fabrication process upon the layer of powder distributed on the working area;
changing a positioning of the working area in altitude after each projection of the processing light is completed;
using the translation driver for driving the receptacle to move to the first position;
changing a kind of powder to be received in the receptacle at the first position by using the feeder to provide at least one other kind of powder that is different from a previous powder to the receptacle at the first position;
using the translation driver for driving the receptacle to move to the second position;
using the rotation driver for driving the receptacle to rotate and thus cause the powder received in the receptacle to be poured out from the receptacle and deposited on the second position;
using the translation driver for moving the outer shell of the receptacle across the poured-out powder and thus distributing the poured-out powder into a new layer on top of existing layers of the working area after the working area is lowered by one layer thickness;
using the projection of the processing light to perform an optical fabrication process upon the new layer of powder distributed on the working area; and
repeating the foregoing steps until a part formed from successive layers of different materials is completed.

Assignees

• Zhuang Chuan-Sheng
• Lin Ching-Chih
• Lin Steven
• Tai Wei-Lun
• Tseng Wen-Peng
• Horng Ji-Bin
• Ind Tech Res Inst

Inventors

• Zhuang Chuan-Sheng
• Lin Ching-Chih
• Lin Steven
• Tai Wei-Lun
• Tseng Wen-Peng
• Horng Ji-Bin

Classifications

• B29C64/236

  for motion in a direction within the plane of a layer · CPC title

• B29C64/241

  for rotary motion · CPC title

• B29C64/329

  using hoppers · CPC title

• B22F12/58

  for changing the material composition, e.g. by mixing · CPC title

• B22F1/00

  Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties · CPC title