Wrapping apparatus

Details Wrapping apparatus Wrapping apparatus

1992-09-09

1994-02-01

Coan, James F.

Package making

Wrapping machines

Annular package

53588, B65B 1130, B65B 1140, B65B 1128

Patent

active

052823474

ABSTRACT:
A wrapping apparatus applies a wrapping medium to an annular article such as a coil of a metal strip, to cover the inner surface as well as the outer surfaces thereof. The apparatus includes a rigid loop structure defining an endless T-sectioned track, and extends as a cantilever extending from a free standing columnar support. The support includes an elevator device for raising and lowering the loop structure. The loop structure includes a hinged gate portion that may be moved to an open position to enable the track to be linked with the annular article, and then reclosed. A self-propelled shuttle moves around the track and carries a dispensing device and a prestretching device that hold wrapping medium and enable the medium to be removed from the coil. A trolley with two power driven rollers continuously reorients the article as wrapping proceeds. A take-up accumulator device is disposed on the shuttle, and includes a plurality of fixedly positioned training rollers, a plurality of yieldably positioned training rollers, and a pneumatic loading device which resiliently loads the yieldably positioned rollers away from the fixedly positioned rollers, so as to maintain tension in the wrapping media.

REFERENCES:
patent: 3116032 (1963-12-01), Roberts
patent: 3348787 (1967-10-01), Giles
patent: 3486293 (1969-12-01), van de Bilt
patent: 4761934 (1988-08-01), Lancaster
patent: 4829753 (1989-05-01), Bricmont
Derwent Abstract Accession No. 91-049006/07, class Q31, SU, A, 1570944 (Kaun Poly) Jun. 15, 1990.
Derwent Abstract Accession No. J4161Y/41, class Q31, SU, A, 545524 (Tbilisi Prodmash) Apr. 6, 1977.

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