Cutting – Rotatable disc tool pair or tool and carrier – Means to separate elements of tool pair
Patent
1991-09-25
1992-09-15
Watts, Douglas D.
Cutting
Rotatable disc tool pair or tool and carrier
Means to separate elements of tool pair
83501, 83564, 83676, B26D 124, B26D 506
Patent
active
051468271
ABSTRACT:
A slitter moving mechanism includes an upper and a lower blade unit with an upper and lower blade respectively, the upper blade being movable between a slitting position to slit a web in a feed direction and a retracted position wherein the web can pass between the blades without being slit; a supporting member vertically and laterally movable within predetermined ranges and rotatably supporting the upper blade, a biasing member for upwardly biasing the supporting member and generating a coupling force for laterally moving the upper blade in a separating direction away from the lower blade; and guide member for restraining lateral movement of the upper blade in the separating direction beyond a predetermined distance and for guiding the vertical movement of the supporting member between the slitting and retracted position; the upper blade unit including a lowering device for lowering the supporting member and for generating another coupling force to swing the upper blade into contact with the lower blade, the lowering device including a vertical slot in the support member and a stationing pin for guiding vertical movement of the support member to a lower-most position in which the pin contacts an upper edge of the slot and whereupon the supporting member is swingable about the pin for allowing the lateral movement of the upper blade into contact with the lower blade.
REFERENCES:
patent: 2212457 (1940-08-01), Schrier
patent: 2664950 (1954-01-01), Morgan et al.
patent: 3080784 (1963-03-01), Schneider
patent: 3185010 (1965-05-01), Printz et al.
patent: 3511123 (1970-05-01), Smith
patent: 3892156 (1975-07-01), Johnstone
patent: 4474096 (1984-10-01), Muller
patent: 4506577 (1985-03-01), Shinomiya et al.
patent: 4905554 (1990-03-01), Cavagna
Komatsu Fumito
Shimokawa Hiroyasu
Dexter Clark F.
Nippon Steel Corporation
Watts Douglas D.
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