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What is a Vertical Lift Module?

Published in Automated Storage Systems 3 mins read

A Vertical Lift Module (VLM) is an automated, enclosed storage and retrieval system that significantly optimizes warehouse space and operational efficiency. It functions as a sophisticated shelf-based storage unit, designed to increase storage capacity within a compact footprint. By operating on the "goods-to-person" principle, a VLM boosts productivity by delivering items directly to an operator, eliminating the need for manual searching and walking through aisles.

How a Vertical Lift Module Works

At its core, a VLM consists of two columns of trays with an automated extractor/inserter device located in the center. Here’s a breakdown of its operation:

  • Goods-to-Person Principle: Instead of an operator traveling to pick items from shelves, the VLM brings the required items to the operator's ergonomic retrieval bay.
  • Automated Storage and Retrieval: When an item is requested (via a user interface or WMS integration), the extractor automatically locates the correct tray, pulls it from its stored position, and delivers it to the access opening at the user's level.
  • Dynamic Tray Height: The VLM automatically measures the height of items on each tray and stores them in the most space-efficient location possible within the unit. This dynamic shelving maximizes the vertical space utilization.

Key Benefits of Vertical Lift Modules

Implementing a VLM offers numerous advantages for businesses looking to enhance their material handling and storage capabilities:

  • Space Optimization: VLMs leverage vertical space, allowing companies to store a large volume of inventory in a fraction of the floor space typically required by traditional shelving. This can free up valuable floor area for other operations.
  • Increased Productivity: By bringing items directly to the operator, VLMs drastically reduce travel time and search time, leading to faster picking rates and increased throughput. This direct delivery system contributes to higher overall operational efficiency.
  • Improved Accuracy: Integration with inventory management systems and features like pick-to-light indicators help operators identify the correct item and quantity, significantly reducing picking errors.
  • Enhanced Security and Protection: Items stored within the enclosed system are protected from dust, damage, and unauthorized access, ensuring product integrity and loss prevention.
  • Better Ergonomics and Safety: Operators work at a comfortable, ergonomic height, minimizing bending, reaching, and climbing associated with manual storage, thus reducing fatigue and potential injuries.
  • Precise Inventory Control: VLMs provide real-time inventory tracking, enabling accurate stock levels, easier cycle counting, and better management of inventory turns.

Common Applications

Vertical Lift Modules are versatile and can be found across various industries and applications, including:

  • Manufacturing: Storing components, tools, and spare parts at the point of use.
  • E-commerce and Retail: Efficient order fulfillment for a wide range of products.
  • Warehousing and Distribution Centers: Optimizing storage for slow-moving or high-value items.
  • Healthcare: Managing medical supplies, instruments, and pharmaceuticals.
  • Automotive: Organizing parts for assembly lines or service centers.
  • Aerospace: Storing specialized parts and tooling.

Why Invest in a VLM?

Choosing a Vertical Lift Module is a strategic decision for businesses aiming to modernize their storage and retrieval processes. It provides a robust solution for challenges like limited floor space, labor shortages, and the need for faster, more accurate order fulfillment. By automating the storage and retrieval of goods, VLMs enable businesses to achieve higher levels of operational efficiency and better leverage their existing facilities.