Coating apparatus – With means to apply electrical and/or radiant energy to work... – Electrostatic and/or electromagnetic attraction or...
Patent
1977-02-22
1978-07-04
Mackey, Robert R.
Coating apparatus
With means to apply electrical and/or radiant energy to work...
Electrostatic and/or electromagnetic attraction or...
118317, 118624, 118630, 239 15, 239500, B05B 502
Patent
active
040982262
ABSTRACT:
Apparatus for powder coating the inside of can bodies, either along a strip or completely, comprises a spray head having an inlet opening fed through a gun with a powder-air mixture and an exit opening located so as to deliver the powder-air stream transversely to the gun axis onto the can body. The exit opening is either a slot-type nozzle for applying a strip, or an annular opening for a complete coating of the can. So as to apply the coating in a precisely limited form without rebound, insert baffles in the form of rods are fixed in the spray head passage which expands between the entry and exit openings to slow down, distribute and orient the powder-air stream towards the exit opening. A deflector wall is located at the end of the passage to deflect the powder-air stream towards the exit opening. Where the slot-type nozzle is used, the powder-air stream may enter an antichamber having an outlet slot parallel to the nozzle and a further slot opening into the passage beyond the antichamber to be deflected into the portion of the nozzle beyond the antichamber by a series of inclined deflector walls. A separate stream of air, separate from the powder-air stream, may be fed into the passage beneath these deflector walls.
REFERENCES:
patent: 1674480 (1928-06-01), Nelson
patent: 1745297 (1930-01-01), Harry
patent: 3045921 (1962-07-01), Heuschkel
patent: 3590318 (1971-06-01), Probst et al.
patent: 3633544 (1972-01-01), Weiler
patent: 3782636 (1974-01-01), Donnelly
Hero Conserven Lenzburg
Mackey Robert R.
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