Concentric paint atomizer shaping air rings
DCFirst Claim
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1. An atomizer for the series coating of workpieces, comprising:
- a bell dish having a generally conical outer surface and a longitudinal rotational axis; and
a steering gas ring adjacent to and opposite said generally conical outer surface of said bell dish, including a first plurality of equally circumferentially spaced inner gas shaping holes defined around a first circle directing shaping gas against said generally conical outer surface of said bell dish during application of paint by said atomizer, and a second plurality of equally circumferentially spaced outer gas shaping holes defined around a second circle having a radius greater than said first circle during application of paint by said atomizer to generate a narrower paint spray pattern than a paint spray pattern generally by directing shaping gas through said first plurality of equally circumferentially spaced inner gas shaping holes.
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Abstract
Two steering air currents that can be controlled independently of one another are directed onto the atomizing cone from the steering air ring of an atomizer for the series coating of workpieces, e.g., car bodies, wherein said steering air currents emerge at different radial distances from the atomizer axis and serve to adjust the width of the spray jet in different regions, such that the spray jet of one and the same atomizer can be optimally adapted to the respective workpiece region to be coated.
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Citations
13 Claims
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1. An atomizer for the series coating of workpieces, comprising:
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a bell dish having a generally conical outer surface and a longitudinal rotational axis; and a steering gas ring adjacent to and opposite said generally conical outer surface of said bell dish, including a first plurality of equally circumferentially spaced inner gas shaping holes defined around a first circle directing shaping gas against said generally conical outer surface of said bell dish during application of paint by said atomizer, and a second plurality of equally circumferentially spaced outer gas shaping holes defined around a second circle having a radius greater than said first circle during application of paint by said atomizer to generate a narrower paint spray pattern than a paint spray pattern generally by directing shaping gas through said first plurality of equally circumferentially spaced inner gas shaping holes. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An atomizer for the series coating of workpieces, comprising:
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a bell dish having a generally conical outer surface and a longitudinal rotational axis; and a steering gas shaping ring adjacent to and opposite said generally conical outer surface of said bell dish, including a first plurality of circumferentially spaced inner gas shaping holes defined around a first circle directing shaping gas against said generally conical outer surface of said bell dish during application of paint by said atomizer, and a second plurality of equally spaced outer gas shaping holes defined around a second circle having a radius greater than said first circle but less than a radius of said conical outer surface of said bell dish directing shaping gas against said conical outer surface of said bell dish at a radius greater than a radius of said first plurality of circumferentially spaced inner gas shaping holes during application of paint by said atomizer to generate a narrower paint spray pattern than a paint spray pattern generated by directing shaping gas through said first plurality of circumferentially spaced inner gas shaping holes and said first and second plurality of circumferentially spaced inner and outer gas shaping holes connected to a source of gas under pressure having a control permitting independent direction of shaping gas through either of said first and second circumferentially spaced inner and outer gas shaping boles. - View Dependent Claims (8, 9, 10)
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11. A method of series coating of workpieces, comprising to following steps:
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positioning a bell dish baying a generally conical outer surface and a longitudinal axis in a rotary atomizer; locating a gas shaping ring opposite said generally conical outer surface of said bell dish including a plurality of circumferentially spaced inner gas shaping holes and a second plurality of circumferentially spaced outer gas shaping holes surrounding said first plurality of circumferentially spaced inner gas shaping holes; directing paint under pressure against said bell dish to apply paint to a substrate and simultaneously directing shaping gas trough said first plurality of circumferentially spaced inner gas shaping holes to generate a first paint spray pattern; and directing paint under pressure against said bell dish and simultaneously directing shaping gas through said second plurality of circumferentially spaced outer gas shaping holes to generate a second paint spray pattern different from said first spray pattern. - View Dependent Claims (12, 13)
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Specification