B - Operations – Transporting – 25 – J
Patent
B - Operations, Transporting
25
J
B25J 17/02 (2006.01) B25J 19/00 (2006.01)
Patent
CA 2078937
A wrist mechanism mounted on an arm of a robot has a wrist flange to which a spray gun is mounted. Coaxially with the arm are provided concentric and relatively rotatable cylinders. From the outermost cylinder extends forward a housing in which gears and shafts are enclosed and operate as follows. Rotations of second and third inner cylinders are transmitted via spur gear trains to respective power transmission shafts extending in parallel to the axis of the cylinders. Bevel gears fixed to respective far ends of the transmission shafts mesh with other bevel gears which have a second axis transverse to the axis of the cylinders. A cylindrical member fixed to one of the other bevel gears is therefore swingable about the second axis. Rotation of the other bevel gear is transmitted to a further gear to rotate the spray gun. A cover besides the housing has an opening through which a flexible paint-supply hose is led into the mechanism to be connected to the spray gun. This serves to reduce the length of the hose from a paint color changeover valve and hence shorten the rinsing time of the hose. The second axis enables the spray gun to swing therearound, thereby eliminating a dead space to which the spray gun cannot have access.
Kawasaki Jukogyo Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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