Package making – Progressively seamed cover web or web folds – With closing of web between package units
Patent
1989-07-31
1990-11-06
Culver, Horace M.
Package making
Progressively seamed cover web or web folds
With closing of web between package units
53553, 53259, 1984771, 198732, 198734, 198735, 198562, B65B 906, B65B 920, B65B 3524, B65B 3526
Patent
active
049675419
ABSTRACT:
An inverted horizontal wrapping machine is provided with an article infeed system which includes a horizontal feed trough with an open exit end positioned closely adjacent the inlet end of the wrapping material tube being continuously formed by the machine's forming box. Offset to one side of the trough is a looped drive chain structure which is rotated in an essentially horizontal plane. A spaced series of flag-type pusher members are pivotally secured to the chain structure for movement therewith, the flag portions of the pusher members along the inner side of the chain structure being swept through the trough to slide articles therein sequentially into the tube inlet. As each pusher flag reaches the exit end of the trough, a first cam element upwardly and rearwardly pivots the flag to disengage it from its associated article, and the pivoted flag is then moved horizontally away from the trough. A second cam element repivots each flag to its downwardly extending article-engaging position prior to its re-entry into the trough. The outer ends of the flags may be provided with projections receivable in corresponding slots in the bottom trough surface to facilitate the feeding of otherwise difficult articles such as plastic forks.
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