Architecture, methods, and apparatus for additive manufacturing and assembly of sparse structures, multifunctional structures, and components for space and terrestrial systems
View Patent ↗A truss-formation apparatus comprising two truss makers and a lateral stage, wherein the truss makers create trusses and each truss maker comprises thermal dies, heaters with temperature sensors, and mandrels; wherein the truss makers form trusses that comprise parallel truss elements and battens; wherein a pultrusion actuator pulls parallel truss elements down along a mandrel; wherein a batten actuator causes a thermal die to rotate around a mandrel forming battens that connect parallel truss elements to one another; and wherein the lateral stage comprises a thermal die and traverses the gap between the parallel trusses forming cross members that connect the trusses.
1. A truss-formation device comprising:
a thermal die, wherein said thermal die comprises a melt section and a consolidation section, wherein said melt section is wrapped with heater wire to heat up and melt continuous fiber reinforced thermoplastic yarn wherein said consolidation section is positioned adjacent to said melt section so that said melted continuous fiber reinforced thermoplastic yarn from said melt section enters the consolidation section where said consolidation section is configured to squeeze and extrude said continuous fiber reinforced thermoplastic yarn as a continuous fiber reinforced thermoplastic solid element;
a second thermal die and a mandrel that connects said thermal die to said second thermal die wherein said thermal die and said second thermal die are parallel to one another such that said thermal die and said second thermal die are oriented to extrude parallel continuous fiber reinforced thermoplastic solid elements; and
a third thermal die and a batten actuator, wherein said batten actuator is rotatably connected to said mandrel and said third thermal die is mounted on said batten actuator such that as said batten actuator rotates said third thermal die orbits around said thermal die and said second thermal die.
2. The truss-formation device of claim 1 wherein said third thermal die is oriented at an angle relative to thermal die and said second thermal die.
3. The truss-formation device of claim 1 wherein said third thermal die is oriented to extrude a continuous fiber reinforced thermoplastic solid element that connects said extruded parallel continuous fiber reinforced thermoplastic solid elements to one another as said batten actuator causes said third thermal die to orbit around said thermal die and said second thermal die.