Abstract: A robot system for encasing conical articles, having along a moving path of a robot a conical article arraying and feeding device, an empty case for enclosing therein said conical articles and an inverting device for carrying and inverting a plurality of said conical articles, the robot having two kinds of grippers, one functioning to grip and convey the conical articles arranged on the arraying and feeding device and the other functioning to grip and convey the conical articles inverted on the inverting device.