Press roll elevator in a double facer

Details Press roll elevator in a double facer Press roll elevator in a double facer

1989-09-21

1991-04-09

Hornsby, Harvey C.

Presses

Concurrent pressing and conveying

Endless conveyer type

100151, 100 93RP, 156470, 1565835, B30B 504

Patent

active

050054732

ABSTRACT:
A press roll elevator in a double facer is disclosed including press roll groups each having a plurality of press rolls for a corrugated cardboard sheet traveling in a first direction through the double facer. The press rolls are rotatably supported between tip end portions of respective pairs of arms which swing in the sheet's direction of travel about fulcrum shafts mounted on both side frames of the double facer. The fulcrum shafts are disposed at intervals along the sheet's direction of travel, and the press rolls are elevated and lowered by swing motion of the respective pairs of arms. Common rails reciprocated along the sheet's direction of travel and having protrusions extending therefrom abut against the respective arms causing the swing motion. The protrusions are disposed along the common rails at protrusion intervals and differences between the fulcrum intervals between the respective fulcrum shafts and the protrusion intervals are successively varied in the sheet's direction of travel, thereby facilitating adjustment and other maintenance for the press roll elevator.

REFERENCES:
patent: 2254860 (1941-09-01), Rose
patent: 2508216 (1950-05-01), Bonds et al.
patent: 3459122 (1969-08-01), Pastoors et al.
patent: 3607523 (1971-09-01), McGirr
patent: 3668786 (1972-06-01), Barny
patent: 3676268 (1972-07-01), Brandenburg et al.
patent: 3709650 (1973-01-01), Gutoski et al.
patent: 3753838 (1973-08-01), Brandenburg
patent: 3829338 (1974-08-01), Hayasi et al.
patent: 4042446 (1977-08-01), Lawton
patent: 4202721 (1980-05-01), Roberts

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