Method and apparatus for shaping a rectangular carton blank

Details Method and apparatus for shaping a rectangular carton blank Method and apparatus for shaping a rectangular carton blank

1982-05-11

1984-08-28

Spruill, Robert L.

Manufacturing container or tube from paper; or other manufacturi

Container or tube erecting, opening, or collapsing

Including overfolding or reverse bending

493181, 493182, 493319, B31B 178, B31B 526

Patent

active

044682140

ABSTRACT:
In folding boxes forming a conveyor chain, rectangular, tubular carton blanks are introduced stepwise into two juxtaposed mirror-image designed folding stations. In the folding stations, the carton blanks are defomed by means of fingers and clamps so that their base surface is pulled into a parallelogram. The two edges forming the longer diagonal are pressed by means of stamping dies and by means of a counterholder and a stamping plate, respectively. After pressing, the carton blanks are pulled back into the folding boxes and are returned to their rectangular shape.

REFERENCES:
patent: 3504596 (1970-04-01), Hirasuna
patent: 4197790 (1980-04-01), Dietrich et al.
patent: 4232591 (1980-11-01), Karpinsky

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