Apparatus for forming folded stacks from a web

Details Apparatus for forming folded stacks from a web Apparatus for forming folded stacks from a web

1986-01-22

1987-06-16

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

With cutting, breaking, tearing, or abrading

And with bending

493412, 83 92, 270 39, B65H 4520

Patent

active

046733825

ABSTRACT:
Zig-zag folded layers of paper webs are stacked downstream of a folder on a lifting table. A belt is raised to hold a nearly completed stack from below and a separating rake with leading spear shaped heads is moved into the stack at a division between sheets, and severs the stack along a fold. The lifting table and separating rake are shifted together as the separating rake advances, during which the stack to be removed is supported on the raised belt. A new partial stack accumulates on the separating rake while the old stack is removed, the belt is lowered and the table is raised. The table and rake are then returned to their original position to resume stacking on the table. Shifting of the table and separating means, and movement of the raised belt, are driven from a common drive by means of a controllable freewheel clutch engaging over a part of the cycle.

REFERENCES:
patent: 2675747 (1954-04-01), Greiner et al.
patent: 2761677 (1956-09-01), Rutkus et al.
patent: 3301111 (1967-01-01), Nystrand
patent: 3892168 (1975-07-01), Grobman
patent: 4205836 (1980-06-01), Nystrand
patent: 4405186 (1983-09-01), Sandberg et al.
patent: 4406650 (1983-09-01), Felix
patent: 4508527 (1985-04-01), Uno et al.
patent: 4522094 (1985-06-01), Messe et al.

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