Methods for composite filament fabrication in three dimensional printing
AssigneeMarkforged, Inc.
InventorsGregory Thomas Mark, Antoni S. Gozdz
Life of this patent
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Abstract
Various embodiments related to three dimensional printers, and reinforced filaments, and their methods of use are described. In one embodiment, a void free reinforced filament is fed into an conduit nozzle. The reinforced filament includes a core, which may be continuous or semi-continuous, and a matrix material surrounding the core. The reinforced filament is heated to a temperature greater than a melting temperature of the matrix material and less than a melting temperature of the core prior to drag the filament from the conduit nozzle.
Claims30
A method for manufacturing a part, the method comprising:
- supplying a core reinforced filament having a solidified matrix material impregnating reinforcing strands aligned along the core reinforced filament;
- receiving the core reinforced filament in a cutter;
- cutting the core reinforced filament at a temperature in which the matrix material is unmelted;
- receiving the cut core reinforced filament in a nozzle;
- heating the core reinforced filament in the nozzle as the core reinforced filament is displaced out of the nozzle;
- dragging forward the core reinforced filament through the nozzle by applying a dragging force at least via the reinforcing strands;
- applying pressure with the nozzle to continuously compact the core reinforced filament as the core reinforced filament is fused into the part;
- and
- fusing the compacted core reinforced filament into the part.
A method for manufacturing a part, the method comprising:
- supplying a core reinforced filament having a solidified matrix material impregnating reinforcing strands aligned along the core reinforced filament;
- feeding forward the core reinforced filament into a nozzle;
- receiving the fed forward core reinforced filament in a cutter;
- cutting the core reinforced filament at a temperature in which the matrix material is unmelted;
- receiving the cut core reinforced filament in a nozzle;
- heating the core reinforced filament in a heated zone of the nozzle as the core reinforced filament is displaced out of the nozzle;
- dragging forward the core reinforced filament through the nozzle by applying a force at least via the reinforcing strands;
- and
- fusing the core reinforced filament into the part.
A method for manufacturing a part, the method comprising:
- supplying a core reinforced filament having a solidified matrix material impregnating reinforcing strands aligned along the core reinforced filament;
- feeding forward the core reinforced filament into a nozzle;
- heating the core reinforced filament in the nozzle as the core reinforced filament is displaced out of the nozzle;
- applying pressure with the nozzle to continuously compact the core reinforced filament before the reinforced filament has fused into the part;
- and
- dragging forward the core reinforced filament through the nozzle by applying a force at least via the reinforcing strands;
- and
- fusing the compacted core reinforced filament into the part.
A method for manufacturing a part, the method comprising:
- supplying a core reinforced filament having a solidified matrix material impregnating reinforcing strands aligned along the core reinforced filament;
- feeding forward the core reinforced filament into a nozzle;
- receiving the fed forward core reinforced filament in a cutter;
- cutting the core reinforced filament at a temperature in which the matrix material is unmelted;
- receiving the cut core reinforced filament in a nozzle;
- heating the core reinforced filament in a heated zone of the nozzle as the core reinforced filament is displaced out of the nozzle;
- applying pressure with the nozzle to continuously compact the core reinforced filament as the core reinforced filament is fused into the part;
- and
- fusing the compacted core reinforced filament into the part.
Dependencies are inferred from the claim text.