Robotic Coil De-banding / Destrapping Systems

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Radian Robotics designs and integrates robotic coil debanding systems for steel and aluminum mills. Also known as robotic destrappers or automatic coil strap-removal systems, these cells locate, secure, cut and remove bands before transferring the scrap strap to a winder for controlled disposal.

The system reduces operator exposure to tensioned steel bands and repetitive manual cutting while maintaining the material flow required at pickling lines, cold-strip mills, galvanizing lines, tandem mills and coil-processing facilities. Each system is engineered around the customer’s coil range, band configuration, line controls, operating environment and production requirements.

Radian can also configure automatic de-banding systems for plates, profiles, tube stacks and other banded products.

Radian robots arrive on-site fully programmed and ready to integrate into your mill. The robot begins by confirming the size and location of the product and then locates the bands with a built-in laser system. Once all the band locations have been found, the robot cuts and removes them one at a time, using a gripper to keep the band under control. After each band is removed, the robot carries it to an accompanying winder that compresses it into a small, easily disposable package.

De-banding systems fit perfectly at the entrance of pickling lines, slitting lines, cold strip mills, galvanizing lines, tandem mills, and other locations.

What is a robotic coil debanding system?

A robotic coil debanding system automatically detects, cuts, removes and collects the straps securing a steel or aluminum coil. It replaces manual band cutting at the entry point of a processing line and can be integrated with coil conveyors, transfer cars, walking beams and mill control systems.

How automatic coil debanding works?

• Coil arrival and line communication – The debanding cell receives the coil and confirms that it is secured in the operating position.

• Coil and band detection – Sensors or vision locate the coil surface, band positions and applicable ID, OD or circumferential straps.

• Band engagement – The robotic tool positions itself around the selected strap and secures it before cutting.

• Controlled cutting and removal – The strap is cut and lifted away from the coil to reduce uncontrolled movement.

• Strap winding or collection – Removed steel banding is transferred to the strap winder and compressed for disposal.

• Completion confirmation – The cell confirms the sequence is complete and communicates with the production line.

Products and band configurations

• Hot-rolled and cold-rolled coils

• Steel and aluminum coils

• ID or through-eye straps

• OD or circumferential straps

• Steel and PET strapping

• Variable band counts and positions

• Oxidized, dirty or inconsistently placed bands

• Plates, profiles and tube stacks

Technical specifications

• Product types: Steel coils, aluminum coils, plates, profiles, tube stacks

• Strap size: Up to 50mm

• Band orientation: OD and ID

• Strap compaction options: Winder or chopper

• Strap disposal options: Chute or conveyor to scrap box

Custom engineered examples

• 7th Axis destrapper, cutting straps on 2 coil lines: https://youtu.be/q3bCFUVrsMU

• Galv line destrapper with strap guide arm: https://youtu.be/p4QaBE7Gy3U