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Sorted by robot, washed and returned to the field |
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 | | Sorted by robot, washed and returned to the field |  |
These containers are available in various sizes, are highly practical and are common, everyday objects. However, they are barely noticed, even though we all take our vegetables out of them during our weekly shopping. No-one spares a thought for IFCO reusable plastic containers (RPCs), in which fruit and vegetables are transported to supermarket shelves. And yet there is one company that devotes itself exclusively to working with these objects. Its sole business is sorting and cleaning them. The task of palletizing them is carried out by a KUKA robot. Brüel international GmbH is market leader in the field of crate handling and washing systems.
The task was to plan a state-of-the-art logistics center. Speed was to be of the essence at GLC AG’s 12,000 m² plant, as the RPCs delivered by truck today must already be on their way back to the producers, sorted by type and washed, tomorrow. The main requirements on the KUKA robots concerned the stack height and the necessary intelligent handling. |
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| Implementation / Solution |
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The crates are brought to the logistics center by truck. Unsorted and collapsed, they are transported by fork lift truck on pallets to the first station in the sorting and washing system. Once the RPCs have been separated, they must be sorted. Each of the five conveyors is equipped with an electronic recognition system. This uses laser lines and a camera to determine the type of the delivered articles. The RPCs are then arranged by type in small stacks which can be gripped by the KUKA robots. The two KR 140 L100 comp robots are each mounted on a 900 millimeter pedestal which, in turn, is mounted on a linear unit. In this way, by making use of the linear traversing unit, the robots can reach all 12 lines. They reliably lift the packages out of the sorting destinations and set them down on a prepared Euro pallet. Once four by three packages have been stacked here, the pallet is full and is carried away by a fully automatic transverse shuttle. It is currently the only system for RPCs of this kind with an integrated robotic solution. To enable the KUKA robots to stack cleanly to a specific height, they are fitted with a 400 millimeter arm extension and intelligent grippers, specially developed by moveline AG for this particular automation solution. At the end of the sorting system, a fork lift truck whisks the pallets away. The sorting system ends here. The pallets are now transported to the washing system. |
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| Results / Success |
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The automation of the RPC cleaning was primarily a response to cost pressure and high quality requirements within the industry. The system was also immediately ISO-certified on completion, thus documenting its high quality and hygiene standards. The sorting accuracy has also been significantly increased as a result of the automation. The system runs 24 hours a day, 6 days a week, in three-shift operation. The seventh day is set aside for servicing. The number of crates in circulation is increasing significantly every year. For this reason, the system is already designed to cope with a higher workload in the future. |
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| Industry |
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Food and beverages Agriculture |
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| Application |
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Handling, loading and unloading Palletizing Packaging and order picking Other handling operations |
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| Customer |
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| GLC AG, Switzerland |
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