FILAMENT DRIVE ASSEMBLY FOR ADDITIVE MANUFACTURING DEVICE

WIPO Patent Application WO/2017/088754

A1

A filament drive assembly (100) for an additive manufacturing extrusion device, comprising a drive wheel (110) for engagement with and advancement of an elongate filament (150), and having an axis of rotation about which the drive wheel (110) is rotatable and said drive wheel (110) being driven by a drive mechanism; a bearing wheel (130) having an elastically deformable peripheral portion (131) extending about at least the circumference thereof, said bearing wheel (130) having an axis of rotation parallel to that of the drive wheel (110) and being offset from the drive wheel (110); and one or more idle bearings (120) disposed between the drive wheel (110) and the bearing wheel (130) and being rotatable about an axis parallel to that of the drive wheel (110) and that of the bearing wheel (130), said one or more idle bearings (120) being offset from the drive wheel (110) to allow for passage and advancement of an elongate filament (150) therebetween, and said one or more idle bearings (120) being moveable in at least a radial direction with respect to the bearing wheel (110) and being rotatably engageable with the bearing wheel (130); wherein the one or more idle bearings (120) and the bearing wheel (130) are offset from the drive wheel (110) such that upon an elongate filament (150) being urged between the drive wheel (110) and the one or more idle bearings (120), the one or more idle bearings (120) is urged against the bearing wheel (130); and wherein the elastically deformable peripheral portion (131) of the bearing wheel (130) urges the one or more idle bearings (120) towards the drive wheel (110) so as to maintain the elongate filament (150) engaged with the drive wheel (110) such that upon the drive wheel (110) being rotated by a drive mechanism the elongate filament (150) is advanced between the drive wheel (110) and the one or more idle bearings (120).

JPS52126485	TIRE MEMBER FOR BICYCLE AND LOW SPEED LIGHT DUTY VEHICLE AND METHOD OF MAKING
JPS6022618	[Title of the Invention] A manufacturing method of a reinforced plastic bend pipe
WO/2013/174361	DEVICE FOR PRODUCING THREE-DIMENSIONAL MODELS WITH SPECIAL BUILDING PLATFORMS AND DRIVE SYSTEMS

BUFORD JONATHAN LOUIS (CN)

PCT/CN2016/106901

June 01, 2017

November 23, 2016

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HUMMINGBIRD INNOVATIONS LTD (CN)

B29C67/00

CN203485449U	2014-03-19
CN204622624U	2015-09-09
CN204309267U	2015-05-06
CN103231517A	2013-08-07
CN204054668U	2014-12-31
CN203496156U	2014-03-26
US20150037446A1	2015-02-05
US20120189729A1	2012-07-26

CHINA SINDA INTELLECTUAL PROPERTY LTD. (CN)

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