Support structure removal system

• US 9,283,716 B2
• Filed: 05/17/2013
• Issued: 03/15/2016
• Est. Priority Date: 09/23/2011
• Status: Active Grant

• Current Assignee: Stratasys Incorporated
• Original Assignee: Statasys Incorporated
• Inventors: Swanson, William J., Mannella, Dominic F., Schloesser, Ronald G.
• Primary Examiner(s): GOLIGHTLY, ERIC WAYNE
• Application Number:
  US13/896,404
• Publication Number:
  US 20130248491A1
• Time in Patent Office: 1,033 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B08B 3/104 using propellers
• CPC Class Codes: B29C 64/35 Cleaning
• CPC Class Codes: B29C 64/40 Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
• CPC Class Codes: B29C 71/0009 using liquids, e.g. solvents, swelling agents spectacle cases, e.g. for cleaning contact lenses A45C11/04; disinfecting or sterilising contact lenses A61L12/00, using liquid substances A61L2/20; cleaning involving the use of liquid in general B08B3/00; for hydrating contact lenses B29D11/00067
• CPC Class Codes: B33Y 40/20 Post-treatment, e.g. curing, coating or polishing

Abstract

A three-dimensional printing farm comprising: a plurality of additive manufacturing systems each configured to print three- dimensional parts from part materials and associated support structures from support materials; a plurality of vessels configured to receive the printed three-dimensional parts and the associated support structures from the plurality of additive manufacturing systems; a support removal tank configured to retain an aqueous support removal fluid; one or more agitation mechanisms configured to agitate the aqueous support removal fluid in the support removal tank; a rinsing tank configured to retain an aqueous rinsing fluid; one or more robotic mechanisms; and a controller configured to direct the one or more robotic mechanisms.

Claims

1. A three-dimensional printing farm comprising:

a plurality of additive manufacturing systems each configured to print three-dimensional parts from part materials and associated support structures from support materials;

a plurality of vessels configured to receive the printed three-dimensional parts and the associated support structures from the plurality of additive manufacturing systems;

a support removal tank configured to retain an aqueous support removal fluid;

one or more agitation mechanisms configured to agitate the aqueous support removal fluid in the support removal tank;

a rinsing tank configured to retain an aqueous rinsing fluid;

one or more robotic mechanisms; and

a controller configured to direct the one or more robotic mechanisms to;

individually insert each of the plurality of vessels containing the printed three-dimensional parts and the associated support structures into the support removal tank such that the aqueous support removal fluid at least partially fills the vessels inserted into the support removal tank; and

individually remove each of the plurality of vessels from the removal tank and individually insert the removed vessels into the rinsing tank such that the aqueous rinsing fluid at least partially fills the vessels inserted into the rinsing tank.

2. The three-dimensional printing farm of claim 1, wherein the support removal tank comprises a tank floor, and wherein the one or more agitation mechanisms comprise a plurality of magnet assemblies located below the tank floor.

3. The three-dimensional printing farm of claim 2, wherein the one or more agitation mechanisms further comprise a plurality of impellers located above the tank floor, wherein the plurality of magnet assemblies are configured to rotate the plurality of impellers with magnetic fields.

4. The three-dimensional printing farm of claim 2, wherein each of the plurality of vessels comprises a porous floor, wherein the one or more agitation mechanisms further comprise an impeller retained by each vessel below the porous floor, and wherein the plurality of magnet assemblies are configured to individually rotate the impellers of the vessels with magnetic fields when the vessels are individually inserted into the support removal tank.

5. The three-dimensional printing farm of claim 1, wherein the controller is further configured to direct the one or more robotic mechanisms to individually move each of the plurality of vessels containing the printed three-dimensional parts and the associated support structures from the plurality of additive manufacturing systems to the support removal tank.

6. The three-dimensional printing farm of claim 1, and further comprising:

one or more additional support removal tanks; and

one or more additional rinsing tanks.

7. The three-dimensional printing farm of claim 1, wherein the support removal tank comprises one or more heating elements configured to heat the aqueous support removal fluid in the support removal tank.

8. The three-dimensional printing farm of claim 1, and further comprising a reclamation unit in fluid connection with the support removal tank, wherein the reclamation unit is configured to reclaim at least a portion of the support materials of the associated support structures removed from the three-dimensional parts by the aqueous support removal fluid.

9. The three-dimensional printing farm of claim 1, wherein the controller is configured to individually insert each of the plurality of vessels into the support removal tank at preset locations within the support removal tank.

10. The three-dimensional printing farm of claim 1 and wherein the controller is further configured to:

move each of the plurality of vessels from one of additive manufacturing systems to the removal tank;

move each of plurality of vessels from the removal tank to the rinsing tank; and

insert each of the plurality of vessels into the rinsing tank such that the inserted vessel is at least partially filled with the aqueous rinsing fluid.

11. The three-dimensional printing farm of claim 10, and further comprising a drying location, and wherein the steps performed by the one or more robotic mechanisms further comprise:

removing each of the plurality of vessels from the rinsing tank; and

moving each of the plurality of vessels removed from the rinsing tank to the drying location.

12. The three-dimensional printing farm of claim 10, wherein the support removal tank comprises a tank floor, and wherein the one or more agitation mechanisms comprise a plurality of magnet assemblies located below the tank floor.

13. The three-dimensional printing farm of claim 12, wherein the one or more agitation mechanisms further comprise a plurality of impellers located above the tank floor, and wherein the plurality of magnet assemblies are configured to rotate the plurality of impellers with magnetic fields.

14. The three-dimensional printing farm of claim 12, wherein each of the plurality of vessels comprises a porous floor, wherein the one or more agitation mechanisms further comprise an impeller retained by each vessels below the porous floor, and wherein the plurality of magnet assemblies are configured to individually rotate the impellers of the vessels with magnetic fields when the vessels are individually inserted in the support removal tank.