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US 5,634,323 AGranted
Carton end panel folding mechanism
AssigneeElopak Systems AG
InventorJames E. Podsiadlo
Life of this patent
Estimating the term…
Abstract
A carton end panel folding mechanism for forcing both the leading and trailing panels of a gable top carton inwardly prior to the sealing of same. The folding mechanism includes four equally spaced blades, wherein each blade is shaped along its leading and trailing edges so as to be engaged at its trailing edge by a leading panel, forcing the leading panel inwardly and the blade forward, causing the leading edge of the next blade to engage the trailing panel and urge same inwardly.
Claims18
In combination,
- a folding station whereas leading and trailing panels of end closures of cartons are folded inwardly,
- conveying means for conveying said cartons in turn past said folding station,
- arm means at said station and insertable between first and second adjacent cartons proceeding the first before the second through said station, and
- rotary means from which said arm means protrudes and which advances said arm means as a unit in an endless path in such manner that said arm means is inserted between said first and second adjacent cartons and folds inwardly the trailing panel of the end closure of the first carton and the leading panel of the end closure of the second carton.
1 more element
A method comprising conveying cartons in turn through a folding station;
- and folding inwardly leading and trailing panels of end closures of said cartons at said folding station by advancing arm means as a unit in an endless path, inserting said arm means at said station between first and second adjacent cartons proceeding the first before the second through said station, and bringing said arm means to bear upon the trailing panel of the end closure of the first carton and upon the leading panel of the end closure of the second carton.
Dependencies are inferred from the claim text.