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US 2015/0147427 A1Published application
Extrusion heads
AssigneeMichael Lundwall
InventorsMichael Lundwall, Jerome Miles
Life of this patent
Estimating the term…
Abstract
In one example, an extrusion head includes a mounting block, a heater block, and a polymer sleeve extending between the heater block and the mounting block. A fastener connector also connects the heater block to the mounting block, wherein the polymer sleeve and the fastener create a fully constrained connection between the heater block to the mounting block.
Claims20
An extrusion head comprising:
- a mounting block;
- a heater block;
- a polymer sleeve extending between the heater block and the mounting block;
- and
- a fastener connecting the heater block to the mounting block;
- wherein the polymer sleeve and the fastener create a fully constrained connection between the heater block and the mounting block.
3 more elements
A system comprising:
- an extruder comprising:
- an extrusion head comprising:
- three connected blocks, each block having a different temperature during operation of the extrusion head;
- a nozzle;
- and
- an insulating sleeve passing through at least the three connected blocks such that all exterior surfaces of the insulating sleeve are in contact with surfaces of the three connected blocks or the nozzle;
- a feed mechanism to accept a filament of printing material;
- an actuator to actuate the feed mechanism and pass the filament through the three connected blocks and the insulating sleeve to the nozzle;
- an active cooling device connected to one of the three connected blocks;
- a build platform;
- and
- at least three controlled axes for moving the extruder relative to the build platform.
9 more elements
A method comprising:
- inserting a polymer sleeve through a thermal isolation block and into a heater block such that one end of the polymer sleeve contacts a nozzle in the heater block and a portion of the polymer sleeve extends outward from the thermal isolation block;
- inserting a mounting screw into through holes in the heater block and the thermal isolation block such that the mounting screw extends from the thermal isolation block;
- and
- placing the polymer sleeve and the mounting screw into a mounting block to secure the thermal isolation block, the heater block, and the nozzle to the mounting block.
1 more element
Dependencies are inferred from the claim text.