Changing Device for Coating Media and Coating System for Coating Objects

A changeover apparatus for coating media comprising:

• a) a plurality of supply units, each of which has at least one inlet connection, which can be connected to a reservoir for a medium, and an outlet connection, a flow channel extending between said connections;
• b) at least one coupling unit, which has an entry connection and an exit connection, which can be connected to an application device, a through-channel extending between said connections;
• c) a positioning device, by means of which the at least one coupling unit can be moved relative to the plurality of supply units,
• wherein
• d) the entry connection of the at least one coupling unit can be coupled in a fluid-tight manner to the outlet connection of a supply unit and can be separated therefrom again;
• e) a valve device is present, in the case of which each supply unit comprises a valve unit which, in a release configuration, releases the flow channel and, in a closed configuration, closes said channel and which can be moved into the release configuration by means of a control signal,
• further wherein
• f) the valve device comprises a control system which
• fa) has a switching device for each supply unit, said switching device, in a switching configuration, allowing the control signal through to the valve unit and, in a blocking configuration, blocking the control signal to the valve unit;
• fb) has a triggering device, which is carried along by the at least one coupling unit and which triggers at least one switching operation of the switching device from the blocking configuration into the switching configuration when the entry connection of the coupling unit is, or has been, coupled in a fluid-tight manner to the outlet connection of a supply unit.