In this paper, we are trying to examine the role of robots in the Industry 4.0 Era. After a brief chronology and an updated literature review on the field, we are trying to examine one of the biggest problems in today's industrial automation, namely in Robotic bin-picking. Its objective is to manage to control a robot with multiple sensory motors attached and be able to collect identified objects with random poses out of a bin, containing a collection of those objects, using any kind of robot-end effector and place it in a predetermined location in the working area. As we observe, the Robotic bin-picking task is divided into three main subcategories: i) perception of the environment, ii) the tooling and iii) the processing architecture. These subcategories are observed thoroughly in the paper and the state-of-the-art techniques used are presented.