Apparatus and method for folding blanks

Details Apparatus and method for folding blanks Apparatus and method for folding blanks

1995-01-11

1998-02-10

Lavinder, Jack W.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493446, 493456, B65H 4512

Patent

active

057163138

ABSTRACT:
The present invention relates to a method and apparatus for folding by approximately 180.degree. a first surface portion of a blank on a rotating drum about a score line onto a second surface portion of the blank. A shaping rail comprises a first surface for acting on a first side of the first portion of the blank to initiate folding the first portion about the score line, a second surface for acting on a second side, opposite the first side, of the first portion of the blank to complete the approximately 180.degree. folding of the first portion about the score line, and a spiral edge for transferring the first portion of the blank from the first surface to the second surface. A first inner guide rail comprising a cylindrical outer surface facing the second surface of the shaping rail and a second outer guide rail having a cylindrical inner surface facing the first surface of the shaping rail are provided to further guide the blank during folding.

REFERENCES:
patent: 4132156 (1979-01-01), Glaze, Jr.
patent: 5052993 (1991-10-01), Focke
patent: 5188582 (1993-02-01), Ullman

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