Meet the Dobot Magician Robotic Arm Conveyor Belt Kit: a complete kit with everything you need to try drawing, writing, 3D printing, and even simulating a complete production line with robots. The conveyor belt features adjustable speed. You get color and distance sensors too.
This robot is capable of detecting, gripping, and picking/placing colored cubes. The conveyor belt has a max speed of 120 mm/s and max payload of 500 g.