The invention discloses a fully-automatic dust-free painting line of a plastic component. The painting line comprises a preheating furnace, a first dust-removing cabinet, a second dust-removing cabinet, a spraying room, a leveling device, an IR (
infrared) furnace, a UV (
ultraviolet)
light curing machine, a PU (
polyurethane) curing oven, a cooling device and a component loading and unloading area, wherein the preheating furnace, the first dust-removing cabinet, the second dust-removing cabinet, the spraying room, the leveling device, the IR furnace and the UV
light curing machine are sequentially and transversely connected and are positioned on the front side of the PU curing oven. Operation procedures, such as continuous dust removal, paint spraying, baking,
drying and cooling, are sequentially finished by matching and using each device, the
automation degree is high, labor consumption is reduced, the production efficiency is effectively improved, and meanwhile, the painting quality is improved;
intelligent control is realized, and the aims of
energy conservation, emission reduction, waste removal, production cost reduction and the like are fulfilled by arranging each electric sensor; the painting line is reasonable in structural
layout, can be used for painting a UV paint and a PU paint to a workpiece, and is strong in function and wide in application range.