Sorting operations

Order assignment, rack composition and release sequence were evaluated together to balance work on both sides of a sorting conveyor.

Industry: Logistics / Sorting
Decision family: Scheduling
Evaluation scope: Historical-order simulation

Customer identity and identifying operational details are withheld.

The operating decision

Uneven assignment or an unsuitable release order leaves one worker waiting while the other is busy and increases walking between work positions.

Inputs: Order item types and quantities · Sorting positions · Left and right zones · Rack slots · Release conditions
Decision: Order-to-zone assignment · Rack composition · Rack release order
Constraints: Equipment layout · Rack and zone capacity · Shared work positions · Release assumptions

How it is approached

Balance left and right work
Assign orders using both item types and quantities to increase the time the two sides can work together.
Bundle by work position
Place items for the same work position together while balancing the bundle between the two sides.
Sequence racks by work flow
Compare release orders with the rack composition to reduce unnecessary movement, then inspect the modeled completion time of the finished plan.

The decision structure

Representative rack composition, conveyor positions and sorting zones. This schematic does not reproduce a customer floor plan.

Historical-order simulation

Validation & scope

The evaluation replays the same historical orders. A plan-only comparison and a separate hypothetical easing of the release bottleneck must remain distinct and non-additive. Breaks and side tasks were excluded; these are modeled sorting times rather than on-site reductions.