Nordson Corporation

David L Moses

Thomas E Hollstein

Jeffrey R Shutic

Gerald W Crum

John F Carlson

Allen R Newman

Robert J Holland

Richard D Burke

Dean A Koch

William S Miller

A twin headed, electrostatic powder coating gun assembly in a lightweight, hollow housing readily mounted on a programmable robot so that the shape of the powder spray pattern can be controlled. The powder coating guns can be mounted in an adjustable housing and/or adjustably mounted in an unadjustable housing. The powder coating guns include an air purge system to clean the nozzles of coating powder.

Robot mounted twin headed adjustable powder coating system with spray

A powder feed hopper includes a housing which mounts a porous plate adapted to support particulate powder material and receive an upwardly directed flow of fluidizing air to form an air-entrained fluidized bed in the housing above the porous plate. In order to improve fluidization, a baffle plate is mounted beneath the porous plate in the path of the pressurized air discharged from one or more air nozzles to create a circulating flow of air-entrained particulate powder material within the fluidized bed in which the flow moves upwardly along the wall of the housing and then inwardly and downwardly toward the center of the porous plate. Additionally, stirrer blades are located immediately above the porous plate to create turbulence and reduce the formation of concentrated channels of air atop the porous plate.

Powder feed hopper

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Amherst, OH, United States of America

David L Moses