Air differential mandrel and method of differentially winding an

Details Air differential mandrel and method of differentially winding an Air differential mandrel and method of differentially winding an

1981-02-23

1982-08-03

McCarthy, Edward J.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 569, B65H 7524, B65H 1904

Patent

active

043424333

ABSTRACT:
An air-controlled differential rewind mandrel for simultaneously winding multiples of web material (slit strips) mounted onto cores in rewind machines having two or more rewind mandrels, means for providing constant torque to each rewind roll formed by the individual slit strips, core engaging shoes formed in arcuate segments positioned around the mandrel, the segments being formed with elongated arcuate outer surfaces having extended purchase contact with the tape winding cores for a substantial part, such as 180 degrees, per rotation of the mandrel, with the inner surfaces of the cores, each shoe being differentially movable relatively to the others as required by tension conditions encountered, and in any desired numerical groupings, and adjustable positional means engageable with the shoes, obviating the necessity for complex adjustment and down time heretofore required to conform to the positions of cores of different widths on the mandrel, and various torque requirements encountered in practise.

REFERENCES:
patent: 3853280 (1974-12-01), Pennisi
patent: 3878999 (1975-04-01), Daves
patent: 4209138 (1980-06-01), Cecchi
patent: 4220291 (1980-09-01), Papa
patent: 4266737 (1981-05-01), Mastriani

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