Approach
A vision system at the start of the installation handles both quality control and position detection for each tub. The collected data is translated—via a specially developed interface—into a code that enables the two pick-and-place robots to accurately pick up approved tubs at the correct location. The robots are equipped with conveyor tracking, allowing them to precisely follow the tubs on the moving belt. Additionally, they feature a multimove function: both robots are aware of each other’s actions, ensuring smooth coordination and preventing collisions. The grippers used to pick up the tubs are custom-designed and 3D-printed by Devion.
One of the installations is equipped with a cardboard tray placer. This system consists of a separate, interchangeable buffer cassette and a robotic applicator with a vacuum gripper. Operators can refill the cassette with cardboard trays without interrupting the operation of the installation. The cassette is easy to disassemble and swap out, allowing for future use of different types of tray liners. The robotic applicator places the tray onto a conveyor belt running parallel to the tub infeed. Using conveyor tracking, the robot knows exactly where each tray should be positioned. The belt automatically adjusts its speed to match the placement needs of the flex pickers, ensuring consistently complete stacks. To detect any loss of cardboard, a vacuum detection system is integrated.
Result
Two state-of-the-art installations, equipped with the latest technologies, offering a capacity of 170 to 200 picks per minute and the flexibility to handle new types of tubs and trays in the future.
