Patent ID: 11858743
Assignee: TGW LOGISTICS GROUP GMBH
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method for order picking of items at a picking station (2), comprising the steps:
acquisition of orders, each having one or more order lines, wherein each order line specifies at least one item by an item type and a quantity ordered,
retrieval of source containers (5) from a warehouse (1), and transport of the source containers (5) from the warehouse (1) to the picking station (2) having a single retrieval position (33),
detection of a sequence of the source containers (5) in which at least some of the source containers (5) are delivered to the retrieval position (33),
sequentially providing of the source containers (5) at the retrieval position (33),
providing of target containers (27) for orders, each having one or more order lines, in a sorting buffer (36) with a plurality of buffer positions (39) ahead of a single loading position (35),
sorting of the target containers (27) by the sorting buffer (36) into a sequence that is determined as a function of the sequence in which the source containers (5) are provided at the retrieval position (33),
transport of the target containers (27) in the sorted sequence and one after the other from the sorting buffer (36) to the loading position (35), wherein transport of the source containers (5) from the warehouse (1) to the retrieval position (33) and transport of the target containers (27) from the sorting buffer (36) to the loading position (35) are coordinated with one another such that one source container (5) and one target container (27) for one order arrive at the retrieval position (33) and the loading position (35) approximately simultaneously,
removing of an item from the source container (5) that is provided at the retrieval position (33), and placing of the item in the target container (27) that is provided at the loading position (35), in accordance with an order,
return transport of a target container (27) from the loading position (35) into the sorting buffer (36) if the order assigned to this target container (27) still contains an unprocessed order line,, wherein
a first target container (27) for processing of different order lines for at least one order is transported back into the sorting buffer (36) after placing of an item for a first order line, and is temporarily buffered at a first sorting position (42) at least until a source container (5) with an item for a second order line is conveyed into a buffer track section (23) provided upstream of the retrieval position (33), and said first target container (27) is moved from the first sorting position (42) to one of the buffer positions (39) and subsequently to the loading position (35) once the source container (5) having an item for a second order line has been transported into the buffer track section (23), and
a second target container (27) for processing of different order lines for at least one order is transported back into the sorting buffer (36) after placing of an item for a first order line, and is moved over a second sorting position (42) to one of the buffer positions (39) and subsequently to the loading position (35) if a source container (5) with an item for a second order line has already been transported into a buffer track section (23) provided upstream of the retrieval position (33).