FILAMENT DRIVE MECHANISM FOR USE IN ADDITIVE MANUFACTURING SYSTEM AND METHOD OF PRINTING 3D PART

A filament drive mechanism (100) for use with an additive manufacturing system (10) includes at least first and second drives (160, 170). Each drive includes a first rotatable shaft (110, 161) and a second rotatable shaft (172, 180) engaged with the first rotatable shaft (161, 172) in a counter rota...

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Bibliographische Detailangaben
Hauptverfasser:	PEKARNA, Matt, SCHULLER, Peter, ALVIG, David, NADEAU, Jordan, KOOP, Shawn
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A filament drive mechanism (100) for use with an additive manufacturing system (10) includes at least first and second drives (160, 170). Each drive includes a first rotatable shaft (110, 161) and a second rotatable shaft (172, 180) engaged with the first rotatable shaft (161, 172) in a counter rotational configuration. Each drive (160, 170) includes a pair of filament engagement elements (126, 166 and 178, 186), one on each rotatable shaft, and positioned on opposing sides of the filament path (218) with a gap therebetween so as to engage a filament provided in the filament path (218). The drive mechanism (100) includes a bridge follower (190) configured to rotatably couple the first drive (160) to the second drive (170) wherein one of the shafts (110, 172, 190) is a drive shaft configured to be driven by a motor at a rotational rate selected to advance the filament at a desired feed rate and to cause the other shafts to rotate at the same rotational rate, such that each pair of filament engagement teeth (126, 166 and 178, 186) will engage a filament in the filament path (218) and will coordinate to advance the filament while counter-rotating at the same rotational rate to drive the filament into a liquefier.