Behr Industrieanlagen Gmbh & Co.

Behr Systems, Inc.

Durr Systems Gmbh

Other

Daimler-benz Ag

Hermann Behr & Sohn Gmbh & Co.

Behr Industrieanlangen Gmbh & Co.

Kurt Vetter

Rolf Schneider

Andreas Fischer

Robert F Heldt

Hans Behr

Fred Luderer

Michael Baumann

Harry Krumma

Eberhard Medler

Siefried Phillipi

Ludwig Freudenreich

Othmar Lippuner

Frank Rupertus

Thomas Hezel

Werner Schweiker

A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.

Rotary atomizer for particulate paints

A rotary bell cup for atomizing particulate material such as paint includes a generally conical overflow surface having a generally constant flow angle defining a radially inward central axial opening and a radially outward atomizing edge with a bevel. A central flat portion is disposed between the conical overflow surface and the radially inward central axial opening. A deflector having a deflection surface of generally rotational symmetry is disposed in front of the central opening having a rear flat surface generally parallel to the central portion and a rear conical surface generally parallel to the conical overflow surface.

The rotary atomizer described has a multiple-piece channel body, which is arranged coaxial to the rotational axis, for supplying coating material and flushing fluid to the bell plate and has three axial holes uniformly distributed eccentrically about the rotational axis. The first hole leads to a central nozzle and is connected to the second hole in the channel body, while the third hole is part of a channel that leads to an eccentric outlet flowing in the vicinity of the nozzle opening. A separate control valve is provided for each of the three channels.

Rotary atomizer for a coating arrangement

For a rapid and simple assembly, the rotary atomizer of the coating arrangement described has a fastening pin (34) arranged on a valve unit (12). The fastening pin is inserted into a matching opening of a mounting flange (70) and is retained therein by a clamping device that exerts a force pressing the valve unit (12) against the flange (70). The atomizer is composed of individual modules (2,4,6,10,12) connected by screw connections and additionally comprises a rigid light guide rod for the transmission of optical rpm measuring signals, which remains in the valve unit (12) during disassembly of the atomizer.

Coating arrangement with a rotary atomizer

A method and apparatus for controlling the sequential coating of motor-vehicle bodies using a preprogrammed painter-robot is provided. As a result of wear, the signal/response delay times of valves and other control elements deviate from the information stored in the program. According to the subject invention, the actual signal/response delay time is measured and compared with the stored information stored in the program. In the event of unacceptable deviations in the actual verses stored signal/response delay times, the actuating times controlled by the program are changed in response thereto, and signals warning of excessive actual delay time are given.

Method for automatic sequential coating of workpieces

Particles of conductive coating material, such as the water-enamel type paint, are sprayed from a grounded bell-atomizer (2) and are electrostatically charged in the corona-discharge area by outer electrodes (10) which are inserted into a holding-arrangement (11, 12, 15) made of an insulating material. Potential-control means in the form of suitably selected materials for the holding-arrangement (11, 12, 15) and/or an atomizer-housing (4) are provided. The radial-potential pattern between the atomizer-housing (4, 6) and the outer electrodes (10) is approximated to the radial-potential distribution of the material sprayed. The insulating material of at least a portion of the apparatus consists of a fluorocarbon such as PTFE (polytetrafluorethylene). The subject invention reduces the danger of the apparatus coating itself.

Apparatus for coating workpieces electrostatically

The subject invention (1) provides a method and apparatus for cleaning the exterior of a sprayer in the area of its spray nozzle (2) and any existing air nozzles. The appropriate part (2) of the sprayer is inserted through an opening (4) in a container (3). All of the areas of the sprayer to be cleaned are directly charged with a cleaning fluid by a bow-shaped array of nozzles moving in a hemispherical path around the part (2) to be cleaned. The invention is particularly suited for the fully automatic cleaning of a spray gun mounted on a painting robot.

Process and device for cleaning a sprayer

Particles of conductive coating material, such as the water-enamel type paint, are sprayed from a grounded bell-atomizer (2) and are electrostatically charged in the corona-discharge area by outer electrodes (10) which are inserted into a holding-arrangement (11, 12, 15) made of an insulating material. Potential-controls in the form of suitably selected materials for the holding-arrangement (11, 12, 15) and/or an atomizer-housing (4) are provided. The radial-potential pattern between the atomizer-housing (4, 6) and the outer electrodes (10) is approximated to the radial-potential distribution of the material sprayed. The insulating material of at least a portion of the apparatus consists of a fluorocarbon such as PTFE (polytetrafluorethylene). The subject invention reduces the danger of the apparatus coating itself.

In an apparatus for electrostatically coating workpieces with an electrically conductive coating material, an intermediate isolation tank (V) is conencted by electrically insulating conduit lines (LVA, LVB, LZA, LZB) between an electrically grounded coating material supply and a high voltage spraying device atomizer (Z). When the apparatus is in operation, the conduit lines (LVA, LVB, LZA, LZB) are alternately filled and emptied, such that the grounded supply and the high voltage atomizer (Z) are continuously insulated from each other. One embodiment utilizes an isolation tank V' which includes a metering cylinder (DZ) having a displaceable piston (2) for adjusting the coating material capacity of the tank (V') to the amount required to coat a single workpiece.

Method and apparatus for electrostatic coating with conductive material

In an apparatus for the use of so-called water enamels or some other similarly conductive coating material, the electrical field for charging the sprayed particles is produced between the grounded spraying edge (6) of a bell-shaped atomizer (10) and a large number of external electrodes (10) inserted into an annular element (20) made of an insulating material.

Growing community of inventors

Remseck, Germany

Kurt Vetter