Electromechanical brake in a slitter
AssigneeMetso Paper, Inc.
InventorsLawrence J. Fuchs, Michael J. Daul
Life of this patent
Estimating the term…
Abstract
An idler roll brake in a paper handing machine wherein the roll brake employs a brake shoe mounted to the roll end bearing. The brake shoe slides forward to bring the brake shoe against the interior surface of the roll. An electromagnet positioned external to and mounted closely spaced from the cylindrical shell the roll attracts a ferromagnetic armature or permanent magnet mounted to the brake to pull the brake shoe into engagement with the inner surface of the roll.
Claims20
A paper handling machine and idler roll assembly, comprising:
- a paper web, passing through the paper handling machine;
- at least one idler roll mounted to the paper handling machine, the at least one idler roll having a cylindrical shell positioned so that the paper web contacts the cylindrical shell of the at least one idler roll, the idler roll mounted to the paper handling machine so that the shell is rotated about an axis by the paper web traveling in contact with the cylindrical shell of the idler roll;
- and
- a brake shoe mounted within the cylindrical shell, and biased by a resilient member away from engagement with an inside surface defined by the cylindrical shell;
- and
- an electromagnet positioned external to and closely spaced from the cylindrical shell, the electromagnet being operable to cause the brake shoe to engage the cylindrical shell inside surface.
A slitter and idler roll assembly, comprising:
- a plurality of slitter blades;
- a plurality of bottom bands, wherein the slitter blades are positionable with respect to the bottom bands to slit a web of paper;
- at least one idler roll, having a cylindrical shell positioned upstream of the slitter blades, the cylindrical shell mounted to be rotated about an axis by a web of paper traveling in contact with the cylindrical shell of the idler roll;
- a brake shoe mounted within the cylindrical shell;
- and
- an electromagnet positioned external to and mounted closely spaced from the cylindrical shell, the electromagnet being operable to cause the brake shoe to engage the cylindrical shell on an inside surface defined by the cylindrical shell.
An idler roll in a paper handling machine, comprising:
- a paper web, passing through the paper handling machine;
- at least one idler roll mounted to the paper handling machine, having a cylindrical shell positioned so that the paper web contacts the cylindrical shell of the roll, the cylindrical shell mounted for rotation to the paper handling machine about an axis, the cylindrical shell being caused to rotate, by the paper web traveling in contact with the cylindrical shell of the idler roll;
- a brake shoe mounted within the cylindrical shell;
- and
- an electromagnet positioned external to and mounted closely spaced from the cylindrical shell, the electromagnet being operable to cause the brake shoe to engage the cylindrical shell on an inside surface defined by the cylindrical shell.
Dependencies are inferred from the claim text.