Extruder system and additive manufacturing printer, comprising such an extruder
AssigneeAlbico Beheer B.V.
InventorPetrus Adrianus Johannes Maria Kuijpers
Life of this patent
Estimating the term…
Abstract
The extruder system includes a supply configured to receive raw material and comprising a heater configured to melt the raw material into extrudable material, an extruder configured to receive the extrudable material from the supply and comprising a screw conveyor configured to convey the extrudable material towards an extrusion nozzle of the extruder and cause an overpressure inside the extruder to allow selective extrusion via the extrusion nozzle. The extruder further includes a plunger arranged at or near the extrusion nozzle and configured to selectively release at least a part of the overpressure and thereby control a flow of extrudable material out of the extrusion nozzle to reduce oozing of extrudable material after stopping the flow.
Claims20
An extruder system, comprising:
- a supply configured to receive raw material and comprising a heater configured to melt the raw material into extrudable material;
- an extruder configured to receive the extrudable material from the supply and comprising a screw conveyor configured to convey the extrudable material towards an extrusion nozzle of the extruder and cause an overpressure inside the extruder causing selective extrusion via said extrusion nozzle;
- and
- a plunger arranged coaxially with the screw conveyor at or near the extrusion nozzle and configured to move against a spring to selectively release at least a part of the overpressure and thereby control a flow of the extrudable material out of said extrusion nozzle to reduce oozing of the extrudable material after stopping said flow.
Dependencies are inferred from the claim text.