APPARATUS FOR APPLYING MULTI-COMPONENT COATING COMPOSITIONS

摘要

The present invention relates to an apparatus for applying multi-component coating compositions comprising at least two dosing devices, an air-assisted spray gun (19), and a controlling device, each dosing device comprising a supply container (3, 14) comprising one component of the multi-component coating composition (A, B), a motoring device (11A, 11B), and a metering device (9, 13), said supply container being connected to said metering device (9, 13), said metering device (9, 13) being connected to said motoring device (11A, 11B) and to said air-assisted spray gun (19), the connecting line (41) between at least one metering device (9) and said air-assisted spray gun (19) being fitted with a pressure transducer (5A) having means for measuring a decrease in pressure in said connecting line (41), said pressure transducer (5A) being connected to said controlling device, and said controlling device being connected to said motoring devices (11A, 11B), said controlling device having means for comparing the decrease in pressure in said connecting line (41) with a set value, means for starting up said motoring devices (11A, 11B), and means to control the power of said motoring devices (11A, 11B) to keep the pressure in said connecting line (41) to the set value.