Automatic Tower and Storage Systems for Fiber Laser Cutting Machines

Fiber laser cutting machines have redefined speed and energy efficiency in metal fabrication. However, their rapid cutting cycles—often measured in seconds per part—create a new challenge: material handling must keep pace. Automatic tower and storage systems for fiber laser cutting machines address this challenge directly. Herochu designs and builds vertical tower systems that act as both high-density storage buffers and automated load/unload interfaces specifically optimized for the high acceleration and fast piercing cycles of fiber lasers. Unlike traditional CO2 laser setups where cutting speed was limited by beam delivery, fiber lasers can cut thin sheets at 30–40 meters per minute. Without an automatic tower system, the operator becomes the bottleneck.

A Herochu automatic tower system consists of one or more vertical storage towers, each containing multiple levels of sheet pallets. The tower interfaces with the fiber laser cutting table via a loading shuttle or a dedicated gantry loader. When a cutting job begins, the tower’s internal elevator mechanism selects the correct pallet based on material grade and thickness, brings it to the load height, and transfers the top sheet to a vacuum lifting head. The lifting head pivots or translates to place the sheet exactly on the cutting table’s reference pins. After cutting, a similar process removes finished parts, often onto a roll-out table or conveyor. The entire exchange cycle takes less than two minutes, but because the tower provides a buffer of multiple sheets, the fiber laser never waits for the next raw plate.

Why is a tower specifically beneficial for fiber lasers? Fiber lasers excel at cutting thin to medium gauges (0.5 mm to 12 mm) with exceptional speed. In many shops, a fiber laser can empty a full sheet of 1 mm stainless steel in under three minutes. Without a tower system, the operator would spend almost as much time loading and unloading as the machine spends cutting. Herochu’s automatic tower and storage systems solve this by stacking ten, twenty, or even fifty sheets in the tower. The machine can cut through the entire stack sequentially without any human action. For lights-out night shifts, a single tower can hold enough material to run the fiber laser continuously for eight to twelve hours.

The configuration options for Herochu’s tower systems are extensive. A single tower can be placed inline with one fiber laser cutter. For higher volume, two towers can flank the cutting machine, with a shuttle that travels between them. Alternatively, a turntable arrangement allows the tower to be positioned perpendicular to the laser, saving floor space in long, narrow facilities. Herochu also offers mini-towers—smaller units with six to eight levels—designed for job shops with limited ceiling height or lower production volumes. These mini-towers can be mounted on casters for mobility, though in practice most customers bolt them down for stability.

One particularly valuable feature of Herochu’s automatic tower and storage systems for fiber laser cutting machines is the inline shuttle with mini-storage tower dedicated to part unloading. In a typical cut, the finished parts and the skeleton (remaining sheet) are both removed from the cutting table. The shuttle moves the cut sheet to a separate unload station, where an operator or robot can pick parts without interrupting the laser. The mini-storage tower acts as a buffer for cut parts, allowing accumulation of multiple sheets worth of parts before they need to be sorted. This decoupling of cutting from part handling is essential for achieving true continuous operation. Optional noise and light abatement enclosures can be added around the unload station, reducing shop floor noise by 15–20 decibels and improving working conditions for nearby personnel.

Productivity gains from adding a tower system to a fiber laser cutter are substantial. Herochu’s internal benchmarks show that a standalone fiber laser with manual handling achieves around 35–40% spindle utilization (cutting time as a percentage of total clock time). With a single tower and automatic load/unload, utilization jumps to 65–75%. Adding a second tower and a shuttle pushes utilization beyond 85%. For customers with high-mix, low-volume production, the tower system’s ability to store multiple material types means changeovers that used to take 15 minutes (finding the right sheet, moving it with a crane, aligning it) now take 90 seconds. One Herochu customer producing electrical enclosure components increased their daily output from 320 parts to 620 parts after installing a dual-tower system on their 6 kW fiber laser.

Remnant management is another area where tower systems excel. Unlike manual storage where partial sheets lean against walls or lie on floor racks, Herochu’s tower stores partial plates vertically on dedicated pallets. The system records the exact dimensions of the remaining material and its location. When a new nesting job is programmed, the software checks if any remnant in the tower can accommodate the required parts. This feature is particularly valuable for fiber lasers because they cut thin materials where remnants are common. A fabricator cutting ventilation grilles, for example, might have many partial sheets of various thicknesses. Herochu’s system ensures those remnants are used before fresh sheets, reducing scrap rates by 10–15%.

The engineering behind Herochu’s towers focuses on reliability in harsh industrial environments. The elevator mechanism uses a dual-chain drive with automatic tensioning. Sheet separation sensors detect double picks by measuring vacuum decay or using ultrasonic thickness verification. The control cabinet is NEMA 12 rated (IP54), protecting against dust and coolant mist common around fiber lasers. Herochu provides a five-year warranty on the tower structure and a two-year warranty on moving components. Remote diagnostic access allows Herochu support engineers to troubleshoot software issues without a site visit, typically resolving problems within four hours.

Integration with existing fiber laser machines is straightforward. Herochu’s communication protocol supports all major CNC brands, including Beckhoff, Siemens, FANUC, and Bosch Rexroth. The system receives machine status (cutting, idle, error) and sends commands for sheet exchange. For older fiber lasers without native automation interfaces, Herochu can install a hardware bridge that emulates operator button presses. This non-invasive approach means even legacy machines can benefit from tower automation.

Cost justification for an automatic tower system follows a clear formula. Calculate current labor hours spent on material handling (loading, unloading, searching for sheets, moving remnants). Multiply by hourly wage plus burden. Then calculate current machine idle time due to waiting for sheets—each idle minute is lost revenue. Most Herochu customers find that the combined labor and idle time savings pay for the tower system within 18 months. After that, the tower generates pure profit by enabling additional production hours without adding staff.

In summary, automatic tower and storage systems for fiber laser cutting machines from Herochu deliver a compelling combination of productivity, material efficiency, and operational simplicity. The tower provides a buffer that decouples cutting from handling, the intelligent software manages remnants and schedules sheet retrieval, and the modular design fits shops of any size. Fiber lasers are powerful tools, but their full potential is only realized when they are paired with Herochu’s tower automation. For fabricators ready to move beyond manual loading and embrace high-utilization, lights-out fiber laser cutting, Herochu’s tower systems offer the most direct path.