| 摘要 |
PURPOSE:To easily alter the direction of a jet pattern, by such a simple structure that plural sets of air jet orifices each consisting of two ones are provided around a paint jet orifice at 180 deg.-intervals and air is supplied to a desired one set by changing over a change-over valve. CONSTITUTION:For example, four introducing orifices 28 are provided to the outer peripheral part of a nozzle holder 30 from the end surface of said holder 30 at 90 deg.-intervals by drilling and four jet orifices 33 directed to one point on the axial line in front of the jet orifice 21 of a nozzle 16 are formed to said holder 30 at 90 deg.-intervals so as to be communicated with the introducing orifices 28. When air is supplied to a first air supply orifice 37 by changing over a direction change-over valve 41, air is injected along the conical surface 34 provided to the leading end of the holder from the upper and lower jet orifices 33 of the nozzle holder 30 forming a set at an 180 deg. interval to each other and, when air is supplied to a second air supply orifice 38, air is similarly injected from left and right jet orifices 33 to make it possible to form a flat fan shaped jet pattern in a desired direction.
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