When wave picking applies

November 18, 2019

Wave picking is one way of organizing in-house pick tasks. Broadly speaking, it consists of:

1.Grouping ordersaccording to logistical criteria like delivery routes or shipping priority.

2.Assigning each wave to an operatorwho will pick up all these productsin the same routein a given period (each wave usually lasts between 1 and 4 hours, but this will depend a lot on the flows handled in each warehouse).

3.Finish preparing ordersin a dedicated zone where they are packaged, consolidated and sorted fordispatch

時間的年代lots can also be reserved within the wave picking organization to replenish yourpicking shelves

How does wave picking work?

Wave picking is one of the most efficient picking methodsif it is executed with the help of awarehouse management software (WMS)。On the one hand, wave picking is usually a combination of the following methodologies and their core principles:

  • Batch picking:groups of ordersare collated according to the shipping priority, the transport route and/or the customer, the number of orders, their composition and theworkload of each operator
  • Picking by zones: groups of orders are distributed by location, to optimize routes and avoid congestion or excessive traffic in the warehouse aisles.

Depending on the in-house handling equipment, you can choose to operate:

  • Hand carts, roll containers ororder picking machines, where the products are initially set. Later, they are moved to another area where they are organized.
  • Hand carts divided into slots where products are classified on the spot, reducing post-picking consolidation.

After a wave is done, the grouped products are taken to anorder processing area where they are sorted (unless this was already done in the cart) and packed。The following diagram shows a graphical breakdown between order groups and wave picking zones:

Standard wave picking process
Standard wave picking process

On the other hand,when using a WMS, each wave lasts a planned amount of time set by the system automatically。係統計算時間範圍to perform each task and reserves time for other operations like kit or pallet assembly, goods packaging, restocking of shelves... Don't forget that the warehouse management system has a digital snapshot of the warehouselayout, which it works from.

Waves tend to be “static” in wave picking (i.e. no changes are allowed once the wave has started, and marking the big difference with waveless picking).Waves are also ordered at the beginning of the day or shift。For example, if looking at some simple wave picking, it would look like this:

The diagram shows the distribution of work waves with the wave picking method.
The diagram shows the distribution of work waves with the wave picking method.

When to surf the pick wave…

Apply wave picking when:

  • Your warehouse has a WMS or warehouse management system. Sorting requested lines and distributing them among operators is a highly complex process. Doing so manually would be almost impossible. And, you would definitely have your work cut out for you. The WMS ensures that no errors are made either in task organization or whenexecuting each pick phase
  • The picking method isman to product, your warehouse is huge and the products are easily accessible.
  • Your warehouse containsmany SKUsand, above all, if these arelightweight; obviously, this is where overall improved productivity takes place.
  • For some warehouses, this method may not cut it in terms of keeping pace (i.e. operations). So, before taking the plunge, study thenature of the demand. See if the wave formula can respond effectivelyor if you should opt for more flexible alternatives such as waveless picking.

Advantages of wave picking + a WMS:

A warehouse management system handles these wave picking tasks:

  • It sorts each order line optimally (i.e. sets of orders to prepare during a wave) considering anenormous variety of logistic criteria
  • It allocates waves in a balanced way among your operatorsto make sure tasks are completed on time (taking individual workloads into account).
  • It improves your response capability: the WMS monitors all processes and detects complications, keeping the warehouse manager informed so they can make quick decisions and easily reassign work.
  • Itmonitors the progress of all your operations in real timeto make sure the day’s schedule is being met.

As this is a very fluidmethod of preparing orders, it is important to adjust the WMS to the times, equipment and logistical variables of each specific warehouse.Software personalization is vital to smooth sailing during this process。If you want to know how our warehouse management system Easy WMS works,contact usand we'll explain its functionalities in detail.

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