MAXSON Dual Position Shaftless Roll Stand
The Dual Position Shaftless Roll Stand includes two unwind positions. Each position is outfitted with an operator control station, a manual side loading roll trolley with track, automatic tension control, “low roll diameter” detection, pneumatic disc brake, independently governed arms that load and raise a roll into position a pair of tapered chucks.
The chucks mount onto over sized stub shafts housed in machined arms. Hydraulic cylinders raise, lower, and clamp the arms. The unwinds can handle roll diameters between 18″ (508 mm) and 84″ (1828 mm) and up to 7,000 pounds (3181 kilograms). using the rugged, heavy duty trolley, the Operator simply positions the roll between the stand’s arms, lowers the arms to the roll core and then drives the tapered chucks on each arm into the roll. The process of removing an expired core and loading a new roll to be run can be accomplished within 3 – 4 minutes. In the mean time, the second unwind position in use.
The tension control system on each roll stand lessens brake pressure automatically as the roll circumference reduces. The “low roll diameter” detector design aids an Operator by automatically slowing the sheeter to a stop when a preset roll diameter is reached at the roll stand. This feature allows the Operator to monitor other aspects of the sheeting process, yet still allows the line to stop before a roll completely expires.