Stránka
6
z
39
3
General device description
(basic device description)
DLP 3D DWARF printer uses Stereolithography printing technology, thus gradual hardening
of photo-reactive resin, so called photopolymer.
As a light source serves UV lamp with DLP chip. In this case a DLP projector manufactured
by ACER, this device has enclosed Confirmation of Conformity in writing.
Print platform moves on console, which is driven on vertical Z-axis by trapezial bolt.
Accurate movement is secured by linear leading. Movement is provided by stepping motor.
Second stepper moves via eccentric lead of tank holder. Both these stepping motors are
powered by voltage in amount of 12V. Voltage 12V is provided by power supply hs-60-12
(http://wifi.aspa.cz/prumyslovy-zdroj-12v-60w-spinany-hs-60-12-carspa-z104207), for
Confirmation of Conformity please use the link.
Body of device is made of laser-cut and welded parts. Device is covered by black acrylic
glass. Lid of device is made of transparent acrylic glass, which serves two purposes: 1.
Prevents sunbeams and other UV light from entering the device, which protects photo-
reactive resin from degradation 2. Prevents UV light leakage from inside of device. This
case should however not occur in usual operation, because the light cannot go thru the
tank filled with resin. This would occur only in case someone starts device and executes
printing without inserted resin and with unfastened print platform.
Device is controlled by electronics developed by us in combination with electronics arduino
and raspberry, electronics are cooled by one ventilator. By projector heated air off-take is
secured by second separate vent.
Light beam is refracted by two mirrors. Stainless sheet covers inner space of device.
Bottom part of device is covered by zinc-plated sheet with leakers for air in-take.
3.1 Technical specification:
Print space dimension: 100x150x200mm
Printing accuracy in Z-axis: 0,015mm
Standard layer height: 0,025mm
Exposure period of one layer: 2-6s (depends on layer thickness)
Large touchscreen
Printer outside dimensions : 345x350x480mm
Data inputs: USB flash disk, WIFI - cloud
Control via mobile phone or web browser.
Weight: 19kg
