Rotamat R 60

Inside the rotating barrel, the workpieces roll over one another, mix thoroughly and enter the spray nozzle area with varying orientations. This results in a uniform coating thickness.

The special barrel shape and the adjustable rotational speed ensure optimum rolling and mixing of the parts. The angle of inclination of the barrel can be continuously adjusted to suit different workpiece geometries. The optimum parameters are determined in preliminary tests and stored in the machine.

Bars of different sizes can be easily swapped, allowing the Rotamat to be flexibly adapted to different batch sizes and processes. A 3S coating for the barrel and non-stick coatings for the inside of the hood and the barrel housing are available as options. Once the coating process is complete, the barrel is tilted by a motor and the workpieces are discharged.

An automatic spray machine applies the paint evenly to the workpieces. Optionally, two spray systems can be used, for example for base and top coats or primer and top coat. The HVLP spray units produce low mist and minimal overspray. The coating process can be monitored at any time via a viewing window and explosion-proof LED lighting.

During the coating process, filtered, preheated air is fed into the Barrel to bring the workpieces up to the optimum processing temperature. An IR sensor continuously measures the component temperature and regulates the supply air accordingly. This results in a uniformly coated surface that bonds strongly with the substrate and dries during the coating process itself. No post-drying in an oven is required.

An industrial PC controls and monitors the entire process. The integrated recipe management system stores all relevant process parameters, such as supply air volume and temperature, drum speed, spray rate and spray pattern. Touchscreen operation, process visualisation and monitoring routines ensure simple operation and reproducible results.

The Rotamat is equipped with a four-stage exhaust air system, consisting of a cardboard labyrinth filter, a filter mat and bag filters. During the coating process, a slight, adjustable negative pressure is maintained inside the Barrel, ensuring that harmful gases do not escape into the environment.