Cutting – Rotatable disc tool pair or tool and carrier – Means to separate elements of tool pair
Patent
1989-09-29
1991-06-25
Yost, Frank T.
Cutting
Rotatable disc tool pair or tool and carrier
Means to separate elements of tool pair
83499, 83504, 83699, B23D 1902, B26D 114
Patent
active
050256939
ABSTRACT:
A web slitting machine for cutting a web or roll of material includes an upper carriage assembly joined to a lower blade holder assembly by a selectively removable guide key which is milled to provide a predetermined cant angle for the blade. The blade is lowered into position by a piston which is rectangular and includes a torsion-resisting sleeve to prevent rotation of the piston about its vertical axis. A pneumatic control provides a plurality of control modes whereby the blade may be raised and lowered with or without locking the upper carriage assembly to its transverse bar and vice-versa. A unique side shift adjustment is provided whereby the blade may be shifted to a half-stroke position and the upper carriage locked when the blade is positioned against a lower knife. This ensures that the pressure of the blade against the knife is the pressure exerted at the mid point of the stroke. A parallelogram linkage biased by a spring provides a shock absorber for maintaining blade/knife contact in the presence of webs moving at high speed.
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"System Helios," Manufacturer Catalogue (Tidland Corporation, Camas, Wash., 8/86).
Biswas Borendra K.
Miller William R.
Schable Reinhold A.
Tidland John W.
Vander Bom Casey M.
Rada Rinaldi
Tidland Corporation, a Washington Corp.
Yost Frank T.
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