| Popis: |
We report on our on-going research to create a volumetric extruder for pellets or granules of recycled plastic to be used in a RepRap FDM 3D printer for rapid prototyping, by combining a rotor made of a Moineau progressing cavity pump coupled with an Auger screw, both contained inside a heated stator. We also introduce an alternative multi-layer Moineau-based pump –easier to build, implement and clean– for pumping a quantity of viscous material in vertical direction. The latter, our screw pump model 131313, consists of a steer Auger portion which increases the pressure inside a layered double-helix stator-like container as a layered helical rotor-like is turned.-we have recently shown (Jan 2017) how our multi-layer Moineau-based pump extrudes a quantity of viscous plastic PLA, which could be used in RepRap 3D printers -see YouTube video: https://www.youtube.com/watch?v=KVAJQfXY_PE |
