| 摘要 |
The invention relates to a coating device, in particular for painting motor vehicle bodies, comprising a sprayer (1) for applying a coating material by means of an application element and an internal color-changer valve assembly (3), said assembly having several color inlets (4-7) for selecting coating materials of different colors. The internal color-changer valve assembly (3) is integrated into the sprayer (1) and is connected by its outlet to the application element (2), in order to feed the selected coating material to the application element (2). The invention also comprises an external color-changer valve assembly (14) with several color inlets for selecting coating materials of different colors, said external color-changer assembly (14) having a separate structure from the sprayer (1) and being connected by its outlet to the application element (2), in order to feed the selected coating material to the application element (2). The invention also relates to a corresponding operating method. |
| 主权项 |
1. A coating device, for painting motor vehicle bodies, comprising:
an atomiser for applying a coating agent by means of an application element, and an internal color-changer valve assembly with several paint inlets for selecting coating agents of different colors, where the internal color-changer valve assembly is structurally integrated into the atomiser and connected to the application element at the outlet end, to supply the application element with the selected coating agent, and an external color-changer valve assembly with several paint inlets for selecting coating agents of different colors, where the external color-changer valve assembly is structurally separate from the atomiser and connected to the application element at the outlet end, to supply the application element with the selected coating agent, wherein: the external color-changer valve assembly has at least two separate paint outlets; the atomiser has at least two additional paint inlets, to which the paint outlets of the external color-changer valve assembly are connected, in addition to the paint inlets of the internal color-changer valve assembly; two recirculation valves are provided, which facilitate recirculation for each paint outlet of the external color-changer valve assembly; a first metering device and a second metering device in the form of a geared pump; the geared pump has a plurality of pumping chambers, each containing a pair of gearwheels configured to rotate within their respective chambers, the individual pumping chambers each supply one of the paint inlets of the atomiser; the geared pump has a common driveshaft to drive the individual pairs of gearwheels; and the driveshaft includes a key disposed within the driveshaft, the key configured to move axially along the driveshaft to selectively engage each of the gearwheels. |
