Applicator comprising a sealing membrane

    公开(公告)号:US11745194B2

    公开(公告)日:2023-09-05

    申请号:US17530707

    申请日:2021-11-19

    申请人: Dürr Systems AG

    摘要: The disclosure concerns an applicator (e.g. print head) for applying a coating agent (e.g. paint) to a component (e.g. motor vehicle body component), having a nozzle chamber with a plurality of nozzles for dispensing the coating agent in the form of continuous jets or droplets, the coating agent flowing during operation through the nozzle chamber to the nozzles so that the nozzle chamber is filled with the coating agent during operation. The print head further comprises a plurality of slidable valve needles associated with the individual nozzles and selectively opening or closing the respective nozzle depending on the position of the valve needles. Furthermore, the print head according to the disclosure contains an actuator chamber for receiving actuators for displacing the valve needles. In addition, the applicator according to the disclosure has a sealing element which fluidically separates the actuator chamber from the nozzle chamber in order to avoid contamination of the actuator chamber with the coating agent in the nozzle chamber. The disclosure provides that the sealing element is designed such that the individual valve needles can be displaced independently of one another without a displacement of one of the valve needles impairing the opening and closing of the nozzles at the adjacent valve needle.

    CLEANING DEVICE FOR CLEANING A NOZZLE APPLICATOR AND CORRESPONDING CLEANING METHOD

    公开(公告)号:US20230029407A1

    公开(公告)日:2023-01-26

    申请号:US17785937

    申请日:2020-12-01

    申请人: Dürr Systems AG

    IPC分类号: B05B15/555 B05B15/58

    摘要: The disclosure relates to a cleaning device for cleaning a nozzle applicator, which is designed for applying a coating agent to a component and has a plurality of application nozzles in a nozzle region in order to discharge the coating agent through the application nozzles during application in an application direction. The cleaning device comprises a rinsing agent supply for supplying a rinsing agent for cleaning the nozzle applicator, and a docking interface for docking the nozzle applicator to be cleaned to the cleaning device. The disclosure provides that the docking interface is configured to flush the rinsing agent into the nozzle applicator through the application nozzles of the nozzle applicator in a direction opposite to the normal application direction. Furthermore, the disclosure comprises a corresponding cleaning method.