Single web sheet cutter and stacker
AssigneeWestvaco Corporation
InventorRobert O. Wilt
Life of this patent
Estimating the term…
Abstract
A machine for continuously cutting a web of paper or the like into sheets of different length and then sorting and stacking the sheets includes an improved tape-type delivery means for receiving and conveying the different length sheets from the cutting zone of the machine to the sorting and stacking zones of the machine in equally spaced relation and at tape speed. The sheet receiving and conveying means comprises a plurality of pairs of equally spaced nip rolls, each of which includes a nip opening and closing mechanism, which are mounted on the machine for fore and aft movement in the direction of web travel for receiving and conveying sheets in the range of from about 20 to 80 inches in length.
Claims11
A sheet cutting, conveying and stacking machine comprising in combination, means for advancing a web of material to a sheet cutting device where the web is cut into sheets, a sheet receiving and conveying means for conveying the cut sheets from the cutting device to a sheet collecting station and a sheet slow down means for delivering the cut sheets to a stacking station, the improvement comprising means associated with the sheet receiving and conveying means for receiving and conveying cut sheets of different lengths said means comprising:
- a. a roller assembly comprising at least one pair of nip rolls mounted on the machine for fore and aft movement in the direction of web travel;
- b. means for selectively opening and closing the nip between said nip rolls;
- and,
- c. means for moving the nip rolls linearly toward and away from said cutting device in response to the sheet length cut.
A tape-type sheet conveying means comprising a plurality of upper and lower tapes arranged across a machine frame and between which sheets of paper or the like are conveyed, the improvement comprising means for conveying cut sheets of different lengths between said tapes, said means comprising a roller assembly including at least three pairs of nip rolls mounted on the machine frame for fore and aft movement, each pair of said nip rolls including an upper nip roll located inside the upper tapes and a lower nip roll located inside the lower tapes, means for rotatably mounting the ends of said nip rolls in mounting plates located outboard of said upper and lower tapes, means for attaching said mounting plates on said machine frame for linear fore and aft movement, means for selectively opening and closing the nips between said pairs of nip rolls in response to the sheet length conveyed and means for moving the paired nip rolls linearly fore and aft along said machine frame.
Dependencies are inferred from the claim text.