Vertical Lift Module (VLM) is an automated vertical storage system designed to store and retrieve small to medium-sized items using trays that move automatically within an enclosed structure. 

By utilizing building height and eliminating manual searching, VLMs can increase storage density, picking accuracy, and operator productivity.

This solution is ideal for warehouses, spare parts storage, production support areas, and distribution centers handling high SKU counts with frequent picking activity. 

How Does Vertical Lift Module Work?

A Vertical Lift Module consists of two columns of trays stored vertically inside an enclosed unit, with an extractor mechanism that automatically retrieves the required tray.

When an item is requested, the system calculates the optimal tray location and delivers it to an access opening at the operator station. Items are picked or replenished, and the tray is returned automatically to its storage position.

Tray height is dynamically managed based on item dimensions, ensuring optimal space utilization. The system can be configured to support different picking strategies, access controls, and integration with WMS or ERP systems. 

This operation enables high-density storage, fast access, and consistent accuracy with minimal manual handling. 

System Structure 

Vertical Lift Modules are built from integrated mechanical and software components, including: 

• Vertical enclosure – housing trays and protecting stored items 

• Storage trays – configurable for different item sizes and weights 

• Extractor system – automatically retrieves and stores trays 

• Operator access opening – ergonomic interface for picking and replenishment 

• Control software – managing storage logic, tray movement, and user access 

Optional features and enhancements include: 

• Pick-to-light or laser pointer systems 

• Access control by user or role 

• Integration with WMS or ERP systems 

• Fire protection and safety systems 

• Multi-user access or dual tray delivery configurations