Meet Cocktail Bot 4.0: a robotic system that relies on 5 robots to prepare custom drinks for you. It has two conveyor belts and a camera in addition to a 3D printed gripper to grasp the glasses and add ingredients. The robots are synced and controlled by the the FZI MotionPipeline. Users will be able to order using a web-based interface on a tablet. There are more than 20 different drinks that can be ordered.
These robots are controlled and synced using an ROS based framework. This video shows the Cocktail Bot in action. FZI has shared more info about the system here.