Apparatus for folding paper boxes

Details Apparatus for folding paper boxes Apparatus for folding paper boxes

1991-04-05

1992-05-19

Terrell, William E.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493423, 493479, B31B 358, B31B 558

Patent

active

051143925

ABSTRACT:
Apparatus and a method for folding flaps onto panels formed in folded box blanks, particularly those constructed from corrugated cardboard. As a blank advances along a paper line, a first station engages leading edges of the flaps and forces the flaps into an intermediate plane representing a partial folding operation. Then a second station controls the relative velocities of the flaps along the paper line with respect to the panels to compensate for skew that can occur in other stations. A final station completes the folding operation. The resulting fold is made about an axis, or fold line. if the flap is to be folded about a prestamped score line, the fold and score lines are coextensive. Typically the flaps are folded 180.degree. and the first station produces intermediate folds that are displaced 90.degree. from the panels.

REFERENCES:
patent: 2931277 (1960-04-01), LaBombard
patent: 3118479 (1971-11-01), Shields
patent: 3122069 (1964-02-01), Lopez
patent: 3127165 (1964-03-01), Denny et al.
patent: 4776831 (1988-10-01), Morisod
patent: 4795416 (1989-01-01), Cogswell et al.
patent: 4979932 (1990-12-01), Burnside

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