Abstract: In a feeding device comprising turret arms having spindle shafts for supporting a web roll, an air brake for applying a braking force in a rotating direction to the spindle shafts, and an accelerating motor for applying a drive force in the rotating direction to the spindle shafts and a braking force in the rotating direction to the spindle shafts, a braking force control device has a tension control device which exercises control such that if a braking force required for the spindle shafts is lower than a constant value, only the braking force from the accelerating motor is supplied to the spindle shafts, and that if the braking force required for the spindle shafts is higher than the constant value, the braking force from the accelerating motor is supplied to the spindle shafts, and the braking force of the air brake is supplied to the spindle shafts.

Abstract: A feeding apparatus comprises a rotatably supported turret arm for supporting a new web roll and an old web roll, and a turret arm turning motor for rotating the turret arm, and splices a web of the new web roll to a web of the old web roll, thereby continuously supplying a web. The feeding apparatus further comprises a web roll diameter measuring distance meter, provided at a position opposed to the circumferential surface of the new web roll when the new web roll stops at a diameter measuring position, for measuring the distance to the new web roll; and a control device for determining the diameter of the new web roll in accordance with an output from the distance meter, and driving the turret arm turning motor in accordance with the determined diameter of the new web roll to move the new web roll to a splicing standby position.

Abstract: In a feeding device comprising turret arms having spindle shafts for supporting a web roll, an air brake for applying a braking force in a rotating direction to the spindle shafts, and an accelerating motor for applying a drive force in the rotating direction to the spindle shafts and a braking force in the rotating direction to the spindle shafts, a braking force control device has a tension control device which exercises control such that if a braking force required for the spindle shafts is lower than a constant value, only the braking force from the accelerating motor is supplied to the spindle shafts, and that if the braking force required for the spindle shafts is higher than the constant value, the braking force from the accelerating motor is supplied to the spindle shafts, and the braking force of the air brake is supplied to the spindle shafts.

Abstract: A feeding apparatus comprises a rotatably supported turret arm for supporting a new web roll and an old web roll, and a turret arm turning motor for rotating the turret arm, and splices a web of the new web roll to a web of the old web roll, thereby continuously supplying a web. The feeding apparatus further comprises a web roll diameter measuring distance meter, provided at a position opposed to the circumferential surface of the new web roll when the new web roll stops at a diameter measuring position, for measuring the distance to the new web roll; and a control device for determining the diameter of the new web roll in accordance with an output from the distance meter, and driving the turret arm turning motor in accordance with the determined diameter of the new web roll to move the new web roll to a splicing standby position.