Coiling reel

Details Coiling reel Coiling reel

1989-08-14

1990-09-11

Jillions, John M.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 721, B65H 7524

Patent

active

049555537

ABSTRACT:
A reel for coiling and uncoiling metal strips includes an expanding mandrel which is actuated by a spreader cylinder. The expanding mandrel is driven by a drive motor with a control and computing unit for determining the outer diameter of the coil at any given time. The outer diameter is introduced into a microprocessor which determines the initial spreading pressure and the winding pull to be maintained. The winding pull to be maintained is introduced into the control and computing unit. The microprocessor further determines, in dependence on the outer diameter of the coil, the required spreading pressure which is generated in the spreading cyclinder. As a result, the expanding mandrel always operates with a spreading force which is dependent upon the outer diameter of the coil at any given time, so that overloading is eliminated and wear is substantially reduced.

REFERENCES:
patent: 4352470 (1982-10-01), Blakeslee
patent: 4421283 (1983-12-01), Rippin
patent: 4447016 (1984-05-01), Enberg et al.

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