Additive manufacturing in gel-supported environment

Patent metadata

Field	Value
Publication number	US-12042999-B2
Application number	US-202117148668-A
Country	US
Kind code	B2
Filing date	Jan 14, 2021
Priority date	Apr 4, 2017
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

Described are methods for making three dimensional objects. A nozzle is positioned within a gel inside a container of gel. The position of the nozzle within the gel is changed while depositing solidifying material through the nozzle. The gel supports the solidifying material at the position at which the solidifying material is deposited. The solidifying material is solidified to form a solid material, which is a three-dimensional object.

First claim

What is claimed is:

1. A method of making a three-dimensional object, the method comprising:
a) positioning a nozzle within a carbomer gel inside a container of carbomer gel, wherein the nozzle further comprises a mixing portion that mixes at least two compounds as they are deposited through the nozzle;
b) mixing the at least two compounds as they are deposited through the nozzle;
c) pneumatically or electrically controlling a flow of the mixed at least two compounds from the nozzle in accordance with defined functionality of software preprogrammed with a design of the three-dimensional object and how to render the three-dimensional object using the nozzle, where the flow includes parameters that increase or decrease pressure within the mixing portion;
d) changing the position of the nozzle within the carbomer gel while depositing solidifying material which becomes part of the three-dimensional object, through the nozzle, whereby the carbomer gel supports the solidifying material at the position at which the solidifying material is deposited, which is suspended within the carbomer gel, wherein changing a speed of non-stationary changing position of the nozzle comprises changing the volume of the material extruded per unit distance traveled as interrelated process variables; and
e) solidifying the solidifying material in the carbomer gel to form a solid material, the solid material being a three-dimensional object, wherein the carbomer gel does not scar, and wherein the carbomer gel is a water-based gel.

2. The method of claim 1 , wherein the nozzle is affixed to a multi-axis machine, and wherein changing the position of the nozzle through the carbomer gel comprises moving one or more axes of the multi-axis machine to which the nozzle is affixed.

3. The method of claim 1 , wherein depositing the solidifying material through the nozzle further comprises varying a rate at which the solidifying material is deposited.

4. The method of claim 1 , wherein changing the position of the nozzle within the carbomer gel further comprises changing the position of the nozzle at varying speeds.

5. The method of claim 1 , wherein changing the position of the nozzle within the carbomer gel comprises changing a position of the container of carbomer gel.

6. The method of claim 1 , wherein solidifying the solidifying material comprises exposing the solidifying material to light or heat.

7. The method of claim 1 , wherein solidifying the solidifying material comprises allowing the solidifying material to cool.

8. The method of claim 1 , wherein solidifying the solidifying material comprises exposing the solidifying material to light while depositing the solidifying material through the nozzle.

9. The method of claim 1 , wherein the solidifying material is a polymer, a rubber, a pulp, a foam, a metal, a concrete, or an epoxy resin.

10. The method of claim 9 , wherein the rubber is a silicone rubber.

11. The method of claim 1 , wherein the solidifying material has a hardness between about Shore 00 - 10 and about Shore 90 D when solidified.

12. The method of claim 1 , wherein the solidifying material is a foam.

13. The method of claim 12 , wherein the solidified foam has a density of about 3 lb/ft 3 to about 30 lb/ft 3 .

14. The method of claim 1 , wherein the carbomer gel is a suspension.

15. The method of claim 1 , wherein the carbomer gel has a viscosity between about 20000 centipoise and about 50000 centipoise.

16. The method of claim 1 , wherein the nozzle has a circular-shaped, rectangular-shaped, square-shaped, diamond-shaped, V-shaped, U-shaped, or C-shaped tip through which the solidifying material is deposited.

17. The method of claim 1 , wherein the solidifying material comprises two compounds that co-polymerize, and wherein solidifying the solidifying material comprises allowing the two compounds to co-polymerize.

18. The method of claim 17 , wherein the nozzle further comprises a mixing portion that mixes the two compounds as they are deposited through the nozzle.

19. The method of claim 1 , wherein changing the position of the nozzle comprises changing the position of the nozzle within the carbomer gel in three through eight axes simultaneously, for at least a portion of time.

20. The method of claim 1 , wherein changing the position of the nozzle comprises changing the position of the nozzle within the carbomer gel in five through eight axes simultaneously, for at least a portion of time.

21. The method of claim 1 , wherein changing the position of the nozzle comprises changing the position of the nozzle within the carbomer gel in three through six axes simultaneously, for at least a portion of time.

22. The method of claim 1 , wherein changing the position of the nozzle comprises changing the position of the nozzle within the carbomer gel in six axes simultaneously, for at least a portion of time.

23. The method of claim 1 , wherein changing the position of the nozzle comprises changing the position of the nozzle to deposit solidifying material onto, around, or within another object within the carbomer gel.

Assignees

• Massachusetts Inst Technology
• Steelcase Incorporated

Inventors

• Tibbits Skylar JE
• Guberan Christophe
• Laucks Jared S
• Kernizan Schendy Guiders
• Hajash Kathleen S
• Sparrman Bjorn
• Noll Paul

Classifications

• B29C64/106

  using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material · CPC title

• B33Y30/00

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

• B29K2995/007

  Hardness · CPC title

• B29K2083/00

  Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material · CPC title

• B33Y70/00

  Materials specially adapted for additive manufacturing · CPC title