| 摘要 |
Apparatus is provided for rotating the spray head or cap of a spray gun to manipulate a noncircular spray emitted therefrom relative to a workpiece to be coated. The apparatus includes a translator located adjacent the spray gun cap and having a drive gear meshing with a driven gear on the cap. The translator includes a twist drill and carrier block moveable longitudinally and having pins extending into helical grooves of the drill. The translator forms a noncircular passage and the block is noncircular so as to be held in the passage for longitudinal but nonrotatable movement. When the block and pins move longitudinally they cause the drill and the drive gear which is affixed thereto to rotate. A flexible, tubular plastic shaft and a flexible plastic tubular sheath extend from the translator to a remote position where a suitable drive moves the shaft longitudinally to move the block. The sheath and shaft are highly flexible and light in weight.
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