Clamping arrangement for gripping and carrying web material

Details Clamping arrangement for gripping and carrying web material Clamping arrangement for gripping and carrying web material

1988-10-06

1990-04-10

Watkins, Donald

Advancing material of indeterminate length

By orbitally traveling material-engaging surface

On endless belt or chain

1988037, B65H 2904, B65H 7016

Patent

active

049152831

ABSTRACT:
A clamping arrangement is disclosed for gripping and carrying web material about a die turret of a packaging machine for molding the web and for carrying the web through and off the packing machine as product is loaded and the package is sealed. The clamping arrangement includes a pair of aligned drive chains and a plurality of facing clamps mounted on each chain. Each clamp includes a lower jaw and an upper jaw pivotally mounted to the lower jaw and actuable between an opened and a closed position. A spring is connected between the upper and lower jaws which biases the upper jaw to the closed position. The lower and upper jaws each define complemental gripping teeth along an edge thereof, the respective teeth being disposed intermediate and adjacent one another when the upper jaw is in the closed position. The teeth of the lower jaw are horizontally aligned with the pitch line of the drive chain when assembled to the chain.

REFERENCES:
patent: 4520613 (1985-06-01), Claudio
patent: 4624726 (1986-11-01), Harper
patent: 4693362 (1987-09-01), Kemmerer et al.
patent: 4826065 (1989-05-01), Natterer et al.
patent: 4846064 (1989-07-01), Hoshi

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