Apparatus and method for folding paper boxes

Details Apparatus and method for folding paper boxes Apparatus and method for folding paper boxes

B - Operations, Transporting

31

B

93/54

B31B 3/02 (2006.01) B31B 5/36 (2006.01)

Patent

CA 2014007

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° and the first station produces intermediate folds that are displaced 90° from the panels.

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