3D Systems Sinterstation Pro, User Manual, Page: 185 / 280

SLS p r o c e s s 1 8 5 S L S S Y S T E M
u s e r ’ s g u i d e S L S s y s t e m d e s c r i p t i o n
Lower Process Chamber (LPC)
The LPC, or lower portion of the process chamber,
contains devices that heat powder on the process
chamber floor, then spread it across the part bed.
These include:
`
Counter-rotating powder bed roller with
cover.
`
Stepper motor to drive roller transverse
motion and roller rotation.
`
Two thermally isolated channels housing
roller drive components. These components
enable roller transverse motion with counter-
rotation. They include:
Two roller driveshafts; one for transverse motion
and the other for rotation; one shaft in each
channel
Two roller guide rods mechanically coupled to
the roller; one rod in each channel
Two sets of pulleys, belts, and belt tensioners for
the roller; one set in each channel
Flexible thermal curtains on the inner side of
each channel provide the isolation for the pulleys
and belts. They also enable the mechanical
coupling of the roller to the guide rods.
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Two pairs of powder heaters; one on the right
side of the chamber and one on the left. Each
pair has a top and bottom heater. The top
“radiant” heater is mounted above the
chamber floor. The bottom “conduction”
heater is below the chamber floor. These
preheat powder from above and below after
it is wiped off the roller cover onto the
process chamber floor—and before it is
spread across the part bed.
`
Square part bed hole in the middle of the
chamber floor, directly below the laser
window. The RCM cylinder rises up and seals
against the gasket around the bottom edges
of this opening.