Automated Long Stock Storage Systems for Bar and Sheet Storage

Dual-Purpose Automation: Herochu Long Stock Storage for Bars and Sheets

While many automated storage solutions focus exclusively on either elongated profiles or flat materials, real-world warehouses often handle both. Bars—whether round, hexagonal, or square—share handling characteristics with pipes, but sheet materials introduce different geometry and stacking requirements. Herochu has developed automated long stock storage systems for bar and sheet storage that bridge this gap, offering a unified platform for both material categories. This approach reduces equipment duplication, simplifies warehouse layout, and improves overall material flow.

The Herochu system’s versatility begins with its modular bin design. For bar storage, the bins feature V-shaped supports or adjustable dividers that prevent rolling and maintain separation between different diameters. Bars up to 12 meters in length can be stored either loose or in bundles, with each grid accommodating a per-layer load of 3 tons. The linear guide rail and chain drive transmission ensure smooth horizontal and vertical movement, preventing bar deflection or binding during retrieval. For sheet storage, the same system can be reconfigured with flat-bottom trays or pallet-sized carriers. Sheet stacks are stored horizontally, and the gantry retrieval unit uses suction cups or fork attachments (depending on configuration) to extract individual sheets or partial stacks without disturbing adjacent inventory.

Space efficiency is a standout feature of the Herochu long stock storage system. Traditional bar storage often uses cantilever racks that occupy wide aisles, while sheet storage typically relies on floor stacking or adjustable pallet racks with significant lost vertical space. Herochu’s zero-aisle, high-density design compresses both types into a single footprint. By maximizing vertical headroom—often achieving 80% warehouse space savings—the system reclaims floor area for production, assembly, or additional value-added operations. Customizable shelf architecture allows different levels to be dedicated to bars, sheets, or mixed materials. For example, lower levels might store frequently accessed bars, while upper levels hold sheet stacks that are retrieved less often. This flexibility supports smart scalability: as inventory grows, additional tiers or adjacent modules can be added without overhauling the existing layout.

The system operates fully autonomously with a high-speed precision gantry. Unmanned storage and retrieval run 24/7, slashing labor costs and eliminating handling errors such as mixing bar grades or damaging sheet edges. The vertical lifting speed of 9 m/min and inlet/outlet speed of 12 m/min ensure that both bars and sheets are moved quickly but gently. Fail-safe protection is integral: intelligent laser sensors scan each retrieval path, and real-time load monitoring prevents overloading or tipping. For sheet storage, load monitoring is especially critical because unevenly stacked sheets can shift during transport; the Herochu system detects such anomalies and adjusts gripping force or halts movement accordingly.

Industry 4.0 intelligence ties the entire operation together. The advanced PLC and touchscreen control provide real-time digital inventory tracking for both bar and sheet SKUs. Users can query remaining length of a specific bar diameter, or the number of sheets left in a stack. Seamless ERP and MES data integration means that material consumption automatically updates production planning. For bar storage, the system can enforce FIFO (first-in, first-out) to prevent surface rust or age-related degradation. For sheet storage, FIFO ensures that older material grades are used before newer lots, reducing obsolete inventory. Data visualization tools within the control interface highlight trends such as turnover rates, peak retrieval times, and storage density metrics, enabling continuous improvement.

From a technical parameters perspective, the Herochu system offers a standard specification of 6000 mm length per storage position (customizable to longer lengths). The number of floors is fully customizable, with each grid sized at 600×500 mm as standard. Movement is achieved through linear guide rails and chain drive transmission. The system supports integration with bar processing equipment such as cold saws, straightening machines, and CNC lathes, as well as sheet processing equipment like laser cutters and press brakes. When a production order is released, the Herochu system automatically retrieves the required bar or sheet and delivers it to the appropriate outfeed station, creating a seamless just-in-time material supply.

In summary, Herochu automated long stock storage systems for bar and sheet storage provide a unified, scalable, and intelligent solution for mixed-material warehouses. By combining high-density vertical design, autonomous gantry handling, and real-time inventory intelligence, the system eliminates the inefficiencies of separate storage methods. Facilities that process both long bars and flat sheets will find that Herochu delivers significant improvements in space utilization, labor productivity, and material traceability—all within a single, cohesive platform.