Coating device and associated operating method

摘要

A coating device, e.g., for painting motor vehicle bodies, comprises a sprayer for applying a coating material by means of an application element and an internal color-changer valve assembly, said assembly having several color inlets for selecting coating materials of different colors. The internal color-changer valve assembly is integrated into the sprayer and is connected by its outlet to the application element, in order to feed the selected coating material to the application element. Further, an external color-changer valve assembly has several color inlets for selecting coating materials of different colors, said external color-changer assembly having a separate structure from the sprayer and being connected by its outlet to the application element, in order to feed the selected coating material to the application element. An operating method corresponds to the device.

主权项

1. A coating device, for painting motor vehicle bodies, comprising:
an atomiser for applying a coating agent by an application element; an internal color-changer valve assembly to supply high runner paints with a plurality of paint inlets for selecting coating agents of different colors and a high runner paint outlet, where the internal color-changer valve assembly is structurally integrated into the atomiser and directly connected to a main needle valve at the high runner paint outlet end, to supply the application element with the selected coating agent wherein the internal color changer is proximate the main needle valve such that no recirculation valve is positioned downstream from the internal color changer; and an external color-changer valve assembly to supply low runner paints with a plurality of paint inlets for selecting coating agents of different colors and a low runner paint outlet, where the external color-changer valve assembly is structurally separate from the atomiser and the low runner paint outlet is connected to the main needle valve through a first separately actuatable valve, to supply the application element with the selected coating agent; wherein a first recirculation valve is provided, which facilitate recirculation for the lower runner paint outlet of the external color-changer valve assembly.