Interlaced three-dimensional printed composites and method for fabricating the same

Patent metadata

Field	Value
Publication number	US-9809926-B2
Application number	US-201514821502-A
Country	US
Kind code	B2
Filing date	Aug 7, 2015
Priority date	Aug 8, 2014
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A machine and method are presented for producing interlaced composite components. The method includes: depositing a first one or more warp filaments onto a deposition surface in a first linear direction, inserting, on top of the first one or more warp filaments, a first one or more weft filaments in a second linear direction, where the second direction is in the same plane as the first one or more warp filaments but is not parallel to the direction of the first one or more warp filaments, depositing, on top of the one or more first weft filaments, one or more second warp filaments in first linear direction, where the second one or more warp filaments are not collinear with the first one of more warp filaments, and inserting, on top of the second one or more warp filaments, a second one or more weft filaments in the second direction.

First claim

The invention claimed is:

1. A method of producing an interlaced composite comprising:
depositing onto a deposition surface a first set of one or more warp filaments in a first linear direction;
inserting, on top of the first set of warp filaments, a first set of one or more weft filaments in a second linear direction, where the second direction is in the same plane as the first set of warp filaments but is not parallel to the direction of the first set of warp filaments;
depositing, on top of the first set of weft filaments, a second set of one or more warp filaments in the first linear direction, where the second set of warp filaments are not collinear with the first set of warp filaments; and
inserting, on top of the second set of warp filaments, a second set of one or more weft filaments in the second direction;
wherein the interlaced composite is formed when at least one of said warp filaments passes over at least one of said weft filaments and passes under at least another of said weft filaments.

2. The method of claim 1 further comprising:
lowering the deposition surface after producing a first layer of the interlaced composite; and
repeating the steps of claim 1 to create a multi-layer interlaced composite.

3. The method of claim 1 further comprising heating at least a portion of the filaments during deposition.

4. The method of claim 1 , wherein the warp and weft filaments comprise reinforcing fibers pre-impregnated with thermoplastic resin.

5. The method of claim 3 , wherein the heating is resistive.

6. The method of claim 3 , wherein the heating is laser derived.

7. The method of claim 1 , wherein at least one of the filaments is supplied by pulling it from a supply reel by a tensioning roller proximate to the deposition surface.

8. The method of claim 1 , wherein at least one of the filaments is supplied by driving it to the deposition surface by an apparatus proximate to a filament supply reel.

9. The method of claim 1 , wherein at least one of the filaments is propelled by air.

10. The method of claim 1 , wherein the temperature of the deposition surface is controlled.

11. The method of claim 2 further comprising compressing each produced layer of the interlaced composite before repeating the process of claim 1 to produce a subsequent layer of the interlaced composite.

12. The method of claim 1 , wherein at least one of the filaments is cut by extendable scissors.

13. The method of claim 1 , wherein the warp and weft filaments comprise comingled reinforcing fibers and thermoplastic fibers; and
wherein the thermoplastic fibers of the warp and weft filaments are melted during deposition.

14. The method of claim 1 , wherein the warp and weft filaments comprise metallic fibers.

15. The method of claim 1 further comprising:
depositing a third set of one or more warp filaments in the first linear direction on top of the second set of warp filaments and extending onto the deposition surface;
inserting, on top of the third set of warp filaments extending onto the deposition surface, a third set of one or more weft filaments in the second linear direction; and
depositing an extension of the first set of warp filaments on top of the third set of weft filaments.

16. A method of producing a layered interlaced composite comprising:
forming a layer of the interlaced composition on a deposition surface in a first orientation comprising:
locating onto the deposition surface a plurality of first warp fibers in a first direction;
locating on top of the first warp fibers, a plurality of first weft fibers in a second direction;
locating on top of the first weft fibers, a plurality of second warp fibers in a third direction; and
locating on top of the second warp fibers, a plurality of second weft fibers in a fourth direction;
wherein the layer of the interlaced composition is formed when at least one of said warp fibers passes over at least one of said weft fibers and passes under at least another of said weft fibers;

placing the deposition surface into a second orientation being different than the first orientation; and
forming another layer of the interlaced composition on the deposition surface in the second orientation comprising:
locating onto the deposition surface a plurality of first warp fibers in a fifth direction;
locating on top of the first warp fibers, a plurality of first weft fibers in a sixth direction;
locating on top of the first weft fibers, a plurality of second warp fibers in a seventh direction; and
locating on top of the second warp fibers, a plurality of second weft fibers in an eighth direction;
wherein the another layer of the interlaced composition is formed when at least one of said warp fibers passes over at least one of said weft fibers and passes under at least another of said weft fibers.

17. The method of claim 16 , wherein the first and third directions are the same and in a warp direction; and
wherein the second and fourth directions are the same and in a weft direction.

18. The method of claim 17 , wherein the warp direction is orthogonal to the weft direction.

19. The method of claim 16 , wherein placing the deposition surface into a second orientation comprises rotating the deposition surface.

20. The method of claim 16 , wherein in each step of forming a layer of the interlaced composition, locating the warp and weft fibers in directions comprises rotating the deposition surface.

21. The method of claim 16 , wherein in each step of forming a layer of the interlaced composition, locating the warp and weft fibers in directions comprises rotating the deposition surface prior to at least two of the locating steps.

22. The method of claim 16 , wherein each of the first warp fibers, first weft fibers, second warp fibers, and second weft fibers comprise fibers impregnated with a thermoplastic resin.

23. The method of claim 16 further comprising, prior to the step of locating fibers selected from the group consisting of first warp fibers, first weft fibers, second warp fibers, and second weft fibers, passing fibers selected from the group consisting of first warp fibers, first weft fibers, second warp fibers, and second weft fibers through a molten bath of thermoplastic resin to form fibers impregnated with the thermoplastic resin.

Assignees

• Georgia Tech Res Inst

Inventors

• Oberste Christopher Marc
• Wang Ben
• Wang Kan

Classifications

• B29C70/24 Primary

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