The Dual Arm Un-Coiler Retention System is intended to retain the outside diameter on heavier gauge strip or high temper material coils up to 11 gauge or .125" thickness. This new development in pallet decoiling improves production efficiency by decreasing coil changeover time and eliminating the hazardous lifting of individual coils. Thicker gauge coils have a tendency to clock spring outward after the strapping bands are removed, making the uncoiling process difficult to accomplish. By utilizing this retention system, the outer wrap of the coil is captured in place during the payoff operation.

The system is applicable to any 52" model UnCoiler and consists of two hydraulically actuated retention arms to contain the coil clock spring. Each arm has a pivoting dual wheel roller assembly to apply counter force pressure on the coil outer wrap. A three position, manual valve enables the operator to select the system modes of operation. The arms can be closed, thereby applying a retention force on the coil; opened to permit the loading of a skid of material; or locked into any neutral position to maintain a constant diameter. Each arm assembly pivots on the support base thereby allowing it to move in and out, compensating for an off center coil stack while it rotates during payoff. The retention force is easily adjustable by setting the system pressure regulator valve. The only input power requirement is 70-90 PSI air pressure.

The complete retention assembly is modular and installs into the Un-Coiler base frame leg. Also required is an Extra Tension Pneumatic Regenerative Control Head to provide the increased guide drum tension required to payoff thicker material. A ratcheting coil lock is available to secure the upper coil core to the coil stack or skid during the payoff operation.

• Installs into base leg, opposite the Extra Tension Pneumatic Regenerative Control Head
• 60" O.D. coil capacity with additional clearance to load coil skid
• Hydraulically actuated arms follow outside surface to a 20" minimum diameter
• Hydraulically adjustable arm retention force for various material thicknesses or tempers
• Quick adjustable vertical arm positioning, facilitates short coil changeover time
• Arms slide to a position below table top to enable easy material loading