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US 3,981,213 AGranted
Rotary sheet material cutter and creaser
OwnerAlbert Lopmaninventor
Life of this patent
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OwnerAlbert Lopmaninventor
Estimating the term…
This is a rotary sheet material cutter and creaser, particularly intended for cutting and creasing cartons out of rolls of sheet cardboard. It includes a rotary cutting and creasing die geared together with a rotary anvil and particularly provided as an attachment for or end part of a carton-printing printing press, which printing press is conventional, and which may be multi-color. The cutter and creaser of this device is synchronized with the printing press by having its gearing geared to the printing press gearing in a conventional manner, and may be provided in gangs for operation on a wide roll of material, thus providing a multiplicity of cut-out cartons simultaneously. The sheet material is fed through the conventional printing press in a conventional manner from a roll, then through this device to cut out and crease the folds of the carton blank. As thus completed, the blanks are deposited in a collecting station, and the waste from which the blanks are cut is then collected in a waste roll for disposal.
A rotary cutting and creasing apparatus for the continuous cutting and creasing of forms (34) from rolls (70) of sheet material (68) of paper, cardboard, corrugated paper or like rolls comprising a die sleeve (10), a die sleeve supporting base cylinder (52), an anvil sleeve (66), an anvil sleeve supporting base cylinder (64), each base cylinder (52, 64) having a bearing shaft (54, 62) extending axially therethrough and through a bearing framework (56), means (58, 60) gearing said shafts (54, 62) together for simultaneous rotation, said anvil sleeve (66) being of ductile material, said die sleeve (10) being of comparatively harder material, said die sleeve (10) having cutting and creasing rule means (12) delineated thereon in desired patterns, said rule means (12) being substantially triangular in cross-section, and spaced opposed fingers (16) struck up from said die sleeve embracing opposite lateral sides (14) of said rule means (12) securing said rule means (12) to said die sleeve (10).
A rotary cutting and creasing apparatus for the cutting and creasing of forms from sheet material (68) comprising an elongated rule means (12) of substantially triangular cross-section, said rule means (12) having a cutting edge (18) and creasing (20) edge means extending in the longitudinal direction of said rule, a somewhat concave back-surface (26) extending opposite to said cutting and creasing edge means (18, 20) and lateral surfaces (14) extending between said cutting and creasing edge means (18, 20) and both outer edges (28) of said base back-surface (26), said base back-surface having outer edges (28) extending parallel with respect to said cutting and creasing edge means (18, 20) and defining the width of said base back-surface (26), a die sleeve (10), a cutting and creasing pattern delineated on said die sleeve (10) by a plurality of oppositely and longitudinally spaced apart fingers (16) struck up from said die sleeve (10), said struck-up fingers (16) securing said rule means (12) to said die sleeve (10) by pressing against said opposite lateral sides (14) with said base back-surface (26) in contact with the die sleeve surface, said rule means (12) being thereby secured between the oppositely spaced struck-up fingers (16).
Dependencies are inferred from the claim text.