Magnetic coupling assembly for accumulating power roll conveyor

Details Magnetic coupling assembly for accumulating power roll conveyor Magnetic coupling assembly for accumulating power roll conveyor

1981-12-16

1984-09-04

Valenza, Joseph E.

Conveyors: power-driven

Conveyor section

Live roll

464 29, 464 30, B65G 1306

Patent

active

044692200

ABSTRACT:
A magnetic coupling assembly for driving a conveyor roll from a power drive while automatically disengaging the conveyor roll from the power drive when an accumulation occurs of the parts being transported by the conveyor. In one embodiment, a drive sprocket and conveyor roll are mounted on a fixed axle between a pair of spaced conveyor side rails. The conveyor roll includes a tube portion having a permanent magnet mounted therein and the drive sprocket includes a sprocket hub having a field face member secured to one of its ends in opposing relationship to the permanent magnet. By varying the air gap between the permanent magnet and field face member, the torque capacity is varied, thereby permitting slippage between the drive sprocket and conveyor roll at different torque levels. The sprocket hub is slidable on a bearing cartridge assembly and the field face member is slidable on a thrust tube in response to operation of an adjustment member for varying the air gap between the permanent magnet and field face member. Long service life is possible with minimum maintenance because of the total bearing construction. In another form of the invention, the drive sprocket is mounted outboard of the conveyor side rails. In this embodiment, the drive sprocket and conveyor roll are mounted on a rotatable axle with the basic components for the magnetic coupling assembly being the same as for the first embodiment.

REFERENCES:
patent: 2712377 (1955-07-01), Eggleston
patent: 3327837 (1967-06-01), Covell
patent: 3610406 (1971-10-01), Fleischauer
patent: 4103516 (1978-08-01), Marcin
patent: 4406360 (1983-09-01), Smith et al.

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