Gema Volstatic Ag

Ransburg-gema Ag

Daniel Seiler

Guido Rutz

Jakob Bischof

Heinz Hofler

An electrostatic powder spray coating system for car bodies is disclosed. Above the car bodies (14) are moved through the cabin and from which the spray organs (94) are supplied with powder. The powder container (92) is supplied with fresh powder and recycled powder from a supply container (36). Short paths between the powder container and spray organs allow precise metering and therefore a good coating quality. The spray coating is applied within an arrangement of inner and outer cabins which allows pressurizing of space between the cabins to prevent ingress of atmospheric air into and egress of powder out of the system.

Electrostatic powder spray coating system for car bodies

A pipe arrangement (40) consists of two nested pipes (60, 62) and a nozzle head (68, 76) on their bottom ends. This nozzle head is located within the diameter of the pipe arrangement (40) and does not protrude radially beyond its diameter. The pipe arrangement can thus be slipped through a guide opening (7) of a guide device (1) into a container holding powder or can be pulled out completely of the guide opening (7), without a need for disassembly of parts of the device. The guide device (1) contains preferably a container lid (3) that can be set on the container (6). Provided on the pipe arrangement (40) is a stop (44) that can be fastened on said arrangement at various heights and through the adjustment of which the immersion depth of the pipe arrangement (40) in the container can be adjusted.

Device for pneumatically feeding powder from a container

A spray disk (4) rotating at high speed and connected to high voltage surrounds a guide rod (30) and can be reciprocated up and down along said guide rod, the latter being of a stationary arrangement. This permits the use of drive means (34, 50) which extend along the guide rod (30) so that for the up and down motion of the spray disk (4) there are no carrier rods required which protrude beyond the stroke of the spray disk beyond the device.

Growing community of inventors

Jona, Switzerland

Daniel Seiler