Apparatus and method for reverse roll feed of shingled blanks

Details Apparatus and method for reverse roll feed of shingled blanks Apparatus and method for reverse roll feed of shingled blanks

1984-10-01

1987-05-19

Schacher, Richard A.

Sheet feeding or delivering

Feeding

Separators

271122, 271151, B65H 304

Patent

active

046661417

ABSTRACT:
An elongated, cylindrical roll, having a surface machined to a predetermined microfinish, is mounted in place of the conventional chromium plated fixed gate in a known type of blank feeder. In such feeders, the upper stretch of the conveyor advances blanks from a high stack, in a bottom feed magazine, along a path, in shingled formation to continuously resupply a low stack in the hopper of a folder-gluer. The elongated roll is reversely rotated, at a surface speed equal to the speed of the upper stretch. The leading edges of the lower most blanks in the high stack are barred by leaf springs from contacting the rear surface of the reversely rotating roll except for an arcuate area, in the lower rear quadrant, defined by an angle of 30.degree. rearwardly from the bottom longitudinal center line of the roll.

REFERENCES:
patent: 2635874 (1953-04-01), LaBore
patent: 2922643 (1960-01-01), Lopez
patent: 4046369 (1977-09-01), Kluge
Xerox Disclosure Journal, vol. 4, No. 5, Sep./Oct. 1979, pg. 629, 630, "Spring Gate . . . ", Danchak et al.

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