Abb Research Ltd.

Abb Patent Gmbh

Gunter B&ouml;rner

Dietmar Eickmeyer

Josef Wittmann

Johann Christoph Nienburg

Hidetoshi Yamabe

J&ouml;rg Sopka

Horst D&ouml;rlich

Steffen Georgi

A method for determining a layer thickness distribution in a paint layer produced during paint spraying after inputting specific spraying parameters into an electrostatically based paint spraying device. A data processing device sets up and uses a phenomenological mathematical model of a quasi-stationary three-dimensional spray pattern. Specific parameters, such as an angle of rotation of electrodes and a rate of movement of the spraying device are input into the phenomenological model as fixed input parameters. In addition, real physical input parameters such as paint volume, directing air data and a voltage value, whose influence on the spraying result is not accurately known, are fed to an artificial neural network. The neural network having been previously trained using real input data such as a configuration of the spraying device, a paint type, operating parameters, and measured values of the layer thickness distribution. The neural network carries out a conversion of the input parameters into model input parameters which are fed to the phenomenological model. Spray patterns formed by the phenomenological model are integrated in a further functional unit as a function of movement data of the spraying device which are contained in the input parameters to form the overall paint layer which is output.

Method and device for determining the layer thickness distribution in a paint layer

An insulation piece for a pipeline conveys electrically conductive liquids from a point that is at a ground potential to a point connected to a high voltage. The liquid is conveyed discontinuously by portion-by-portion transport by the carriage flow of the liquid being interrupted. The insulation piece is periodically free of liquid, corresponding to the interruptions in the carriage flow. The insulation piece is a hollow body, and its unobstructed width is equal to or greater than that of the pipeline. Connecting pieces for connecting to the pipeline are provided on the end faces of the insulation piece, which are closed in places by terminating elements, and which connecting pieces are of the same diameter as the adjacent pipeline. The connecting pieces pass through the terminating elements, rest against them to form a seal, and each have a toroidal-form attachment on the outside at their inner end.

Insulation piece for a pipeline

A rotary atomizer with external charging which can be used for applying conductive paints, in particular water-based paint, to a surface of a body to be coated. The rotary atomizer has a directing air ring at a high-voltage potential and an earthed spraying bell. To reduce the risk of discharges, it is proposed to connect the ring to an earth potential via a high-impedance resistance, so that the ring assumes a potential which lies between the high-voltage potential of electrodes for the external charging and the earth potential of the bell.

High speed rotary atomizer with directing air ring

A method for determining spraying parameters that are suitable as input values for a paint spraying unit that can electrostatically charge a liquid paint. In this case, at least one artificial neural network is used to determine the spraying parameters, an output of such a neural network being available for each spraying parameter. A suitable number of real measured values are fed to the one neural network or a plurality of neural networks as input values, initially in a learning phase. The measured values further contain associated real spraying parameters in addition to a paint thickness distribution in the form of discrete values. Input values are fed to the one neural network or a plurality of neural networks in the application phase. The input values being the result of an analysis of the paint thickness distribution of a targeted, that is to say prescribed, spraying result.

Method for determining spraying parameters for a paint spraying unit

A rotary spray atomizer for applying electrically conductive paint, in particular water-based paint, to surfaces, includes a housing. A spray head is fitted on front of the housing for receiving a supply of paint and discharging the supply of paint in a spray mist as a result of rotation. A motor is disposed in the housing for rotary actuation of the spray head. At least two electrode holders are disposed along a concentric circle and extend towards the front parallel to a longitudinal axis of the housing. Electrodes are each accommodated in and protrude from an end of a respective one of the electrode holders. High-voltage sources constructed as a cascade are each plugged into a respective one of the electrode holders for receiving a low-voltage current, feeding one of the electrodes and causing the electrode to generate an electric field applying the spray mist discharged by the spray head to an application surface.

Rotary spray atomizer

A powder-spraying apparatus having simultaneous internal and external charging, which is suitable for electrostatic powder coating. In order to achieve improved constancy of the deposition efficiency, largely independent of the distance between the powder-spraying apparatus and the work piece, it is proposed to connect both internal high-voltage electrodes and external high-voltage electrodes to a high-voltage source via high-resistance components.

Growing community of inventors

Mühlhausen, Germany

Gunter Börner

Growing community of inventors

Mühlhausen, Germany

Gunter B&ouml;rner

Gunter Börner