Coating machine and rotary atomizing head thereof

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 3/10 (2006.01)

Patent

CA 2567143

A coating machine enabling the inside of a paint chamber to be washed clean with less amount of use of thinner by increasing washing efficiency and capable of forming a coating with uniform coating thickness by always uniformly jetting a paint over 360~ about a rotary atomizing head and the rotary atomizing head of the coating machine. The coating machine comprises the rotary atomizing head in which the paint chamber is formed in the clearance between an outer bell fitted to the tip of a tubular rotating shaft and an inner bell fitted to the front side of the outer bell. Fins agitating, in the paint chamber, a washing fluid supplied from a thin tubular nozzle inserted into the tubular rotating shaft are radially formed on the rear surface side of the inner bell. An annular paint groove temporarily accumulating the paint is formed in the inner surface of the rim part of the outer bell on which the paint jetted from paint jetting holes formed at the peripheral surface part of the paint chamber is extended.

Machine à revêtement permettant de laver l~intérieur d~une enceinte à peinture en utilisant moins de diluant en augmentant l~efficacité de lavage, et capable de former un revêtement d~épaisseur uniforme en projetant uniformément en permanence une peinture sur 360· autour de la tête pulvérisatrice rotative de la machine à revêtement. La machine à revêtement comprend la tête pulvérisatrice rotative dans laquelle est formée l~enceinte à peinture dans l~espace entre la cloche extérieure montée sur l~extrémité d~un arbre tubulaire rotatif et une cloche intérieure montée sur le côté avant de la cloche extérieure. Des ailettes agitant, dans l~enceinte à peinture, un fluide de lavage fourni par une buse tubulaire mince insérée dans l~arbre tubulaire rotatif sont formées radialement sur le côté de surface arrière de la cloche intérieure. Une rainure à peinture annulaire accumulant temporairement la peinture est formée dans la surface intérieure de la partie de rebord de la cloche extérieure sur laquelle s~étend la peinture projetée par des trous de projection de peinture au niveau de la partie de surface périphérique de l~enceinte à peinture.

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