Automated Steel Sheet Storage System ASRS – Intelligent Vertical Plate Tower

A vertical plate tower changes how a sheet metal shop thinks about storage. Instead of spreading plate across the floor, it stacks storage upward and lets a machine do the reaching. Herochu’s Intelligent Vertical Plate Tower is an automated ASRS that combines a rigid steel frame, multi-layer drawers, an elevator, and PLC supervision in one system — built for plants that store heavy sheet and need it fast.

How the vertical plate tower works

The tower stands as a single structure, with storage layers stacked from floor to top. Each layer holds a tray, and an elevator rides alongside the tower carrying the material cart. When a specific plate is requested, the elevator positions the cart at the correct layer, the tray exchanges at the inlet or outlet, and the plate moves out to the operator or the next machine. The same cycle runs in reverse for storage. Because the system knows where every sheet is, retrieval follows the shortest possible path — no aisle driving, no forks, no guesswork. The elevator also serves as the carrier that brings the material cart into and out of the warehouse, so the whole movement sequence stays under one control system.

A frame built for rigidity

The warehouse body consists of the frame body and the motor body, both made from large-section high-strength thick-walled steel, which gives the structure good rigidity and strength under continuous operation. The three-dimensional warehouse adopts an integral bilateral frame combined with triangular oblique span beams. Main load-bearing components are manufactured from cold-rolled steel pipes, selected for high strength and good pressure resistance. This combination keeps the tower stable while trays loaded with tons of plate move at speed, and it keeps positioning accuracy consistent over years of use — a structure that flexes under load will not hold a ±2 mm tolerance for long.

Multi-layer drawers for separated storage

The drawers are designed with multiple layers, and boards are stored separately rather than stacked on top of one another. Separated storage has two practical effects: plates no longer scratch each other when dragged out, and any single sheet can be accessed without unloading everything above it. For a shop that works with many gauges and grades, that changes picking from a chore into a quick, two-minute operation. It also simplifies inventory control, because each layer holds one known plate specification instead of an unidentified stack.

Tray engineering that survives real work

The tray is the component that meets the load every day, and Herochu builds it accordingly. Trays use Q345 steel with a surface that is sandblasted, oxidized, and finished with electrostatic powder coating. In real-world testing, a single tray supports 5 tons. Roller tracks at both ends let the loaded tray move easily, and an additional positioning safety device keeps it locked in place during travel. The traveling wheels and axles undergo blackening treatment to prevent rust and corrosion, which matters in shops where cutting fluids and humidity are part of daily life.

Elevator and vertical motion

The lift is made of high-strength thick-walled steel with good rigidity and strength. It serves as the carrier for the material cart, moving it into and out of the warehouse on demand. Both the conveyor and the vertical drive use variable frequency motors, which are safe, reliable, and position accurately. The design deliberately combines machine precision with operator workflow, so people and machines work together instead of competing for the same aisle. Rational design choices here — motor sizing, acceleration ramps, and travel limits — are what let the system deliver its rated 5–15 m/min exchange and lift speeds without stressing the structure.

Control, monitoring, and guarding

A PLC supervises the entire tower. Real-time monitoring covers pallet positioning, plate weight measurement, overheight plate detection, and empty slot verification in storage areas. Fault detection and alerting run on sensor data analysis, so problems are reported before they become downtime. The control interface is a 15-inch touchscreen, with Chinese and English as default languages and region-specific customization available. Safety equipment includes a guardrail at the front and safety light curtains that halt movement on misoperation, while the guard plates use a modern, simple design that keeps the machine looking clean on the shop floor.

Floor space: the quiet advantage

Horizontal racking stores plate in one plane: the bigger the inventory, the more aisles and the more square meters. The vertical tower stores in the third dimension, stacking layers above each other inside a compact footprint. A shop that moves from racks to a Herochu tower often reclaims enough floor area to install another machine or widen its material flow lanes. Adding a layer adds height, not floor area, so inventory can grow without reshuffling the shop layout — an advantage in buildings where wall and column positions were never designed for automated equipment. For facilities quoted on rent per square meter, that reclaimed space carries a monthly value that shows up on the profit statement long after the tower is installed.

Frequently asked questions

What plate sizes fit the tower? Maximum storage dimension is 6,000 × 2,500 mm, and the clearance space is 240 mm. Both are customizable to the plant’s actual plate sizes.

How fast does the system move? Storage in/out exchange speed is 5–15 m/min, and lift speed is 5–15 m/min, with repetitive positioning accuracy of ±2 mm.

Can the number of layers change? Yes. Layer count is customizable, with configurations up to 15 layers per tower, and multiple towers can be arranged side by side for larger volumes.

For plants that handle sheet every day, the question is not whether to automate storage — it is how quickly the change can pay for itself. Herochu’s Intelligent Vertical Plate Tower delivers automated steel sheet storage with the structure, speed, and safety features a busy shop can rely on.