Mechanism for changing a web feed from intermittent to constant

Details Mechanism for changing a web feed from intermittent to constant Mechanism for changing a web feed from intermittent to constant

1996-11-06

1998-06-09

Stryjewski, William

Advancing material of indeterminate length

Plural material-moving means

And intermediate storage

226172, B65H 2024, G11B 1556

Patent

active

057622540

ABSTRACT:
A mechanism is provided for receiving a web with intermittent motion and converting it to uniform motion, particularly for severed carton items. A reciprocating carriage has first and second adjacent idler rollers and a third idler roller spaced away from the first two. A driven roller has a fixed axis and is located with respect to the third idler roller such that the web when strung between the first and second rollers and thence around the third roller and thence around the driven roller, assumes a quasi-boustrophedonic configuration such that the portion of the web between the third idler roller and the driven roller decreases when the carriage moves in the direction which decreases the distance between them. Upper an lower endless belts pass partially around the first and second rollers, thence around the third idler roller, thence around the driven roller, thence along different respective return paths. The driven roller is rotated at substantially constant speed, and the carriage is moved in said first mentioned direction when the web movement has been arrested, and in a second direction opposite the first direction when web movement resumes.

REFERENCES:
patent: 2399155 (1946-04-01), Reed et al.
patent: 4188110 (1980-02-01), Stange
patent: 4569285 (1986-02-01), Forno et al.
patent: 4984728 (1991-01-01), Brinkmeier et al.

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