9/13/2016 | 1 MINUTE READ

Viridis3D Robotic 3D Printing System Enables Continuous Production

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The robot-driven 3D printing system accommodates variable part sizes for sand molds and cores.

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Viridis3D’s RAM123 enables 3D printing for sand molds and cores. The system consists of a Palmer 400-lb hopper and P-12 feeder, an ABB Robotics robot with a 28"-wide sand printing head, and conveyors that serve as the build surface. It is said to have a short setup time and lower operating costs while enabling continuous part production. 

The video above illustrates how the system works. The print head collects bulk sand from a feeder and then spreads it evenly across the build area. The head moves with a windshield wiper-like motion, depositing sand and then leveling it on the reverse stroke while a binder is metered onto the struck surface to build the part.

After the build is complete, a conveyor carries the finished part out of the way and the next job can be started immediately. According to the company, building parts on the conveyor enables a steady flow of different parts from one production line, with no hard tooling to change. The system is controlled via ViriPrint desktop software.

The RAM123 system can build parts as large as 24" × 36" × 12" with no need for a build box, enabling variable part sizes. Print resolution is 100 dpi and layer thickness ranges between 200 and 500 microns.

The printer is compatible with standard foundry sands and resins, and only handles the amount of sand necessary for each build, speeding up the process and minimizing material consumption. Excess material is recycled back into the printer for re-use. Optional upgrades include a bulk sand refilling system and a sand-sifting station, both from Palmer. 

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