Filament spool auto-change in a modeling machine

Details Filament spool auto-change in a modeling machine Filament spool auto-change in a modeling machine

2007-02-06

2007-02-06

Davis, Robert B. (Department: 1722)

Plastic and nonmetallic article shaping or treating: processes

With step of cleaning, polishing, or preconditioning...

C264S040100, C264S308000

Reexamination Certificate

active

10858122

ABSTRACT:
A filament cassette and a filament loading assembly supply modeling filament to a liquifier in a three-dimensional deposition modeling machine. Two or more cassettes containing spooled filament are inserted into the machine. A strand of filament from a first one of the cassettes is fed to the liquifier for extrusion. Without operator intervention, the filament strand from the first cassette is withdrawn from the liquifier, and a filament strand from a second one of the cassettes is fed to the liquifier. The switching of filament feed sources is triggered by an event, such as an identification that the filament from the first cassette has reached a predetermined minimum length. In this manner, a used primary filament cassette is automatically replaced with a standby filament cassette, so that the machine need not experience downtime waiting for an operator to change the cassettes.

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Paper entitled “High Temperature Fused Deposition Modelling: An Experimental Study Focusing on Modelling Materials”, by F.K. Feenstra, from Time-Compression Technologies '98 Conferenct (Oct. 13-14, 1998, Nottingham, U.K.).

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