Abstract: A system and method for partially or completely inverting (rotating) a die and subsequently returning the die to its normal operating position. Systems of the invention include a roll-over unit that engages a roll frame or similar structure to which a die of interest is temporarily secured. The roll-over unit includes a drive motor that is used to rotate the roll frame and the die that is releasably coupled thereto. A deceleration assembly is provided to bring rotation of the die to a slow and controlled stop in one or both rotational directions. When the drive motor is a hydraulic motor, the deceleration assembly may include deceleration valves that are actuated by a rack gear that is caused to move linearly during rotation of the drive motor.

Abstract: A system and method for partially or completely inverting (rotating) a die and subsequently returning the die to its normal operating position. Systems of the invention include a roll-over unit that engages a roll frame or similar structure to which a die of interest is temporarily secured. The roll-over unit includes a drive motor that is used to rotate the roll frame and the die that is releasably coupled thereto. A deceleration assembly is provided to bring rotation of the die to a slow and controlled stop in one or both rotational directions. When the drive motor is a hydraulic motor, the deceleration assembly may include deceleration valves that are actuated by a rack gear that is caused to move linearly during rotation of the drive motor.