Head - Stratasys FORTUS 360mc Service Manual

Head

Purpose
Extrudes model and support material for modeling as directed by the system. Functions
include:
Components
1.
Head Board:
• Provides direct control of heater blocks and support liquefier switching.
• Onboard processor communicates (PIC) with system.
• Monitors thermocouple temperatures - model and support.
• Provides encoder feedback from the filament drive motors through the
2.
Filament Present Sensors:
• Detect when filament has been loaded to the head.
• Electrically connected to the head board.
3.
Heater blocks:
• Responsible for heating the filament in the tip.
• There are two heater block assemblies - one for model, one for support.
• The liquefier block is a two-part assembly with a center channel for the tip
4.
Heater and temperature control:
• The heaters are controlled by Pulse Width Modulation on the head board
• There are two heater packs - one installed in each half of the liquefier
• The heaters are electrically connected to the head board.
• Heat control is provided through a thermocouple installed in the back half
FORTUS 360mc/400mc Service Manual
MIO board to the computer PMD1.
(solid surface contact between the two block halves and the tip is critical to
successful heat transfer).
using 120 volts DC supplied by the AC board.
block.
of each heater block and electrically connected to the head board.
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