Pick Modules
What is a pick module?
Typically pick modules are multi-level rack structures to store inventory and pick items for order fulfillment but it is also possible to have a single level pick module. The main component of a pick module is rack. Modules may be made up of various rack types including pallet, carton flow, or shelving. The number of storage locations and SKUs stored in pick modules varies greatly from hundreds to thousands. Large distribution centers often have several multiple level pick modules with levels or entire modules set up to handle a type of product or configured for a specific type of rack. In other situations the desire is to start with a smaller, pilot pick module concept to gain confidence and proof of the productivity and efficiency benefits.
Picking technologies used in pick modules
As orders are released for picking, they may be picked to carts, totes, conveyor, pallet jacks or other equipment for movement from the pick module to a packing or shipping area. Picking within a pick module can be done through various methods. Some systems are designed for operators to use paper pick lists, RF or Pick To Voice (PTV) and pick to a cart or pallet jack. Other more automated solutions involve a conveyor line through the pick module where operators scan a bar coded license plate for an order and using Pick To Light (PTL) or Pick to Display (PTD) locations are lit for operators to pick items from into a tote or shipping carton that is then placed onto the conveyor and routed as necessary.
Benefits of pick modules
- Allow for dense storage of product by taking advantage of vertical cubic space
- Reduce the amount of floor space required for pick faces
- Increased picking rates
- FIFO (first in first out) rotation of product
- Reduces amount of walking for increased picker efficiency
- Ability to replenish locations from behind while picking occurs from the front
