Europe Premiere: Otto Group Deploys Unloading Robot "Stretch"
Seven o'clock in the morning at the Haldensleben shipping center. At this time, the incoming goods area is bustling. Numerous swap bodies and sea freight containers arrive daily, loaded with T-shirts, sweaters, blouses, shirts, pants, shoes – basically everything that can be ordered in fashion from bonprix and OTTO. On peak days, up to 40,000 cartons of new goods are delivered, unloaded, and stored – a demanding job that requires a lot of muscle power and full concentration. Since early August, employees in the incoming goods area have had a new "colleague" who actively supports them: "Stretch" is his name, weighing 1,300 kilograms and being an AI-supported robot. His task: to grasp cartons, place them on the conveyor belt, and relieve the employees.
Last year, the Otto Group formed a strategic partnership with Boston Dynamics, one of the world's leading robotics providers. This includes deploying Stretch at several logistics locations within the group. In this context, the Otto Group is now integrating the first Stretch in Europe into its logistics processes. The choice fell on Haldensleben in Saxony-Anhalt because the shipping center there has been the heart of logistics for the Otto Group for 30 years. The site specializes in the logistical handling of small-volume assortments, primarily clothing and shoes.
The Hub for Otto Group's E-Commerce
With state-of-the-art technology, Hermes Fulfilment, the logistics service provider belonging to the group, handles warehousing, packs parcels and bags with items ordered online, manages Europe-wide shipping, and restocks goods returned due to dissatisfaction. Up to 300,000 shipments leave the site daily. The shipping center is one of the largest in Europe and has become the hub for Otto Group's e-commerce.
To maintain this status, significant investments have recently been made in digitization and the use of AI-supported technologies. Stretch is a mobile, autonomous robot. It can handle cartons of various sizes weighing up to 23 kilograms. The unloading rate is around 500 packages per hour, referred to as "Kolli" in logistics.
Sophisticated Interaction of Cameras and Sensors
Simply put, Stretch consists of a robotic arm with a gripping tool and a swiveling "perception mast." Both elements are mounted on a mobile platform about one square meter in size. The "perception mast" houses various cameras and sensors. They enable the robot to have a 360-degree view of its surroundings, orient itself, and precisely recognize objects. "The special thing is the sophisticated interaction of cameras and sensors," explains Tomek Pauer. The project manager in the Supply Chain Management of the Otto Group has been leading the strategic partnership for two years and is responsible for the introduction of the new technology as the program manager. The differentiated system for environmental perception works closely with the robotic arm. It has seven axes and a reach of up to 3.2 meters vertically and nearly two meters horizontally. At its end is a swiveling vacuum gripper with 50 rectangularly arranged suction cups.
With the help of pneumatic control and sensors, Stretch can recognize a wide range of carton types and sizes and grasp them from various angles thanks to the tool's mobility. Even cartons that slip or fall during unloading pose no problem: "Depending on the position of the carton, the robot autonomously decides whether to pick up the fallen package first or continue the unloading process in the container," reports Tomek. If cartons block the way, Stretch navigates around them. Extensive programming before use is not required. "The robot needs to be configured once, for example, by familiarizing it with the gates and the installed equipment. The rest is handled by the trained algorithm that the robot relies on during unloading," explains Tomek.
Stretch will initially be deployed in the pilot phase at a gate in the incoming goods area of the Haldensleben shipping center. Structural changes were necessary for this. To enable the 1.3-ton robot to enter the container to unload the cartons, the loading ramp had to be hydraulically reinforced. Additionally, extra scanners were installed in the incoming goods conveyor system. They check the cartons placed by Stretch for damages from six sides. If a package is torn or dented, it is automatically ejected in the incoming goods area before being transported to the high-bay warehouse via conveyor belts. The high-bay warehouse is the heart of the shipping center: it stores up to 1.2 million cartons of goods. If all the packages were laid out end to end, they would span a length of about 600 kilometers, which corresponds to the direct distance between Hamburg and Munich.
Innovative Approaches in Daily Work
Because the packages are heavy, unloading is one of the toughest jobs in the shipping center. Additionally, containers and swap bodies can heat up in the sun during summer, while it can be very cold inside the boxes in winter. Stretch is intended to relieve employees in the incoming goods area from now on. The robot will improve working conditions by taking on part of the heavy physical work. In the future, they can assume more complex, value-adding tasks in the shipping center. With the investment in AI-based robotic solutions, it becomes clear once again that the Otto Group is actively preparing for the future.
To meet the growing demands of online commerce and continuously improve service, the Otto Group relies on a strong interplay between people and technology. There are hardly any fears among the staff. On the contrary: the curiosity and anticipation of employees for relief from the new "colleague" are high. "The combination of human expertise and technological innovations is an important building block to meet the growing market demands and further improve service for our customers," emphasizes Kay Schiebur, the Otto Group's Executive Board member responsible for Services.
For Stretch not only relieves employees and optimizes the working environment, but also improves the efficiency of logistical processes. The robot's reliable performance over a long period enhances planning, especially during high order volumes – such as on Black Friday or during the Christmas season – and increases the availability of goods in the shipping center. Thus, the deployment of robots also contributes to an improved shopping experience.
After successfully completing the pilot phase at the Haldensleben shipping center with initially one Stretch robot and four more in the coming months, the Otto Group plans to roll out the robotic solution to other locations in its logistics network. Additionally, further applications such as palletizing or loading containers are being developed through joint research and development.
Long-term, Scalable Technology Solutions
Stretch and its first deployment in a shipping center in Europe is an example of how the Otto Group continuously shapes the future of logistics. "The Otto Group is actively shaping the future of logistics. With the introduction of AI robotics, the openings of the innovative shuttle warehouse in Altenkunstadt, and the new European flagship in fulfillment, the logistics center in Ilowa, we maintain a high pace and invest a medium three-digit million amount in improving the customer experience," emphasizes Kay Schiebur. "Investments in technology are not a short-term trend, but part of a long-term strategy to create scalable processes that go far beyond individual applications."
