A system with a novel configuration that gives a large-scale 3D printing additive manufacturing machine the capability of printing parts components at high deposition rates with fused filament deposition (FFD) and direct fused deposition (DFDM) with either polymer pellets, small-size particles or flakes.
University of Alberta researchers invented a hybrid system with a 3D printing head extruder design, which has a nozzle configuration to print parts at a larger scale size and with high deposition rates within the same carriage, a Filament Fused Deposition (FFD) head extruder and Direct Fused Deposition (DFD) polymers of pellets or flakes particles by a screw-extruding system. The attachment leads to higher throughputs with faster printing speeds and thicker printing layers. Additionally, it selectively uses filament fused deposition polymer to print zones of the plastic parts where higher resolutions based on the part performance are required. The system’s capabilities employ raw materials from 3D-printed wasted parts and other conventional plastic manufacturing processes. The main advantages of this system are the versatility of product design with a higher production rate and final cost reduction. Furthermore, in terms of the environmental problems generated by plastic waste, the system promotes the “Circular Economy” strategy for part production where material after life-use can be easily reincorporated into the supply chain to avoid plastic accumulation.
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