
• ENERGY SAVING Due to the recirculation of the air flows, aimed to optimize heat recovery, and to the ventilation that is controlled and channeled in a highly efficient way, the heat exposure of the pieces to be dried is increased making the best use of the heat and air in the system. • SPACE SAVING Thanks to the vertical movement of the trays in the dryer, the machine footprint is reduced to a minimum, even in case of very long drying times. • DRYING ENVIRONMENT WITH FILTERED AIR AND CONTROLLED VENTILATION It is designed to guarantee the final quality of the cured work-pieces. Air temperature and air speed in various zones are set according to the parameters of drying required. The air flows are channeled appropriately to create ventilation tangent to the surface of the pieces. The air in the system is pre-filtered. LOADING AND UNLOADING, COMPLETE BATCHES, CYCLE BY CYCLE. The machine’s operating sequence: The conveyor belt is set in motion as soon as a belt pallet coming up from below has reached the loading and unloading level and a batch of freshly lacquered work-pieces has been identified by the photocell. After the loading of a new batch and the unloading of the dried work-pieces have been completed, the following movements are carried out simultaneously in the Convert: • the belt tray which has just been loaded moves up by one cycle in only 2,5 seconds (1 cycle=1 rack stage) • the next belt tray starts moving up and reaches the loading and unloading position • the belt tray on the top starts moving in the next cabin • the belt tray at the bottom starts moving in the previous cabin DRYING SYSTEM WITH BELT TRAYS The Contivert Dryer with belt trays has all the advantages of a linear dryer, while requiring only a minimum of space and energy. Belt trays arranged one on top of the other ensure controlled air flow, with both its speed and temperature adapted to the drying cycle and the finishing material used. THE NECESSARY NUMBER OF BELT TRAYS The model of the Contivert, the number of the belt trays and the overall height of the dryer are determined by: • the output of the upstream lacquering unit (coating and automatic spraying machine) • the drying cycle specified by the lacquer manufacturer THE MAXIMUM WORK-PIECE THICKNESS IN THE CONTIVERT DEPENDS ON THE DISTANCE BETWEEN TRAYS. The thickness of the work pieces to be dried determines the distance between the belt pallets (rack clearance) and therefore as a consequence the number of the belt pallets possible in the relevant Contivert model of a certain height. A sufficient distance between the belt pallets is essential to ensure correct air circulation over the work pieces, and therefore effective drying.