Vertical Lift Module
Definition: What are Vertical Lift Modules?
A storage system that consists of two parallel columns each of which is divided into fixed shelf locations that can hold a single storage module such as a tray or tote is known as a Vertical Lift Module (VLM for short). These modules store items on trays and deliver them to an ergonomically positioned work counter with the touch of a button on a control device.
Inventory within the VLM is stored on front and rear tray locations or rails. By entering a tray number in the built-in control pad or by requesting a part through software, the operator triggers the movement of an extractor. The extractor travels vertically between the two columns of trays and pulls the one that is required from its location. It brings it to an access point, and the operator either picks or replenishes stock. The tray returns to its home upon confirmation.
In order to match the available overhead space in a facility, VLMs can be built quite high. When more units form “pods,” their operators are able to retrieve items from one unit while the other units are moving.
VLMs are used most often for order picking, consolidation, kitting, parts handling, buffering, inventory storage, buffer storage, and numerous other similar operations. These systems help provide floor space savings, increase labor productivity, improve worker ergonomics, and help control ongoing processes.