Method and apparatus for folding cartons to consistently square

Details Method and apparatus for folding cartons to consistently square Method and apparatus for folding cartons to consistently square

1992-10-05

1994-06-21

Culver, Horace M.

Package making

Methods

Closing package or filled receptacle

533764, B65B 720, B65B 726

Patent

active

053219368

ABSTRACT:
A method and apparatus for folding the major flaps of cartons uses a folding rail having entry, transitional and exit sections which include vertical, curvilinear and horizontal surfaces, respectively, such that the transitional and exit sections are machined from a solid block of metal to have a curvilinear surface of a particular curvature developed from three-dimensional modelling on a computer aided design system in order to consistently square the cartons in a folding operation. The folding rails are positioned in a flap closure station such that a leading folding rail is mounted on a stationary mounting block and a trailing folding rail is mounted on a translatable folding rail in order for the folding rails to be moved closer together or farther apart to fold cartons of different widths. The folding rails have guide rails mounted to them to guide the folded cartons into a compression finger assembly where an arrangement of easily replaceable teflon rails is used to compress the flaps of the cartons to spread the glue. The compression finger assembly is followed by a transport rail assembly of teflon rails which provide a smooth, nonabrasive surface for the cartons to slide along in order for the cartons to set.

REFERENCES:
patent: 2768492 (1956-10-01), Kay et al.
patent: 3726061 (1973-04-01), Pagdin et al.
patent: 3959950 (1976-06-01), Fukuda
patent: 4196563 (1980-04-01), Gabrielson et al.
patent: 4218862 (1980-08-01), Marchetti

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