Cutting – Cutting motion of tool has component in direction of moving... – With means to render cutter pass ineffective
Patent
1992-07-22
1994-03-29
Jones, Eugenia
Cutting
Cutting motion of tool has component in direction of moving...
With means to render cutter pass ineffective
83332, 83345, 835081, 83563, 83678, 493370, 493471, 493475, B26D 112, B31B 114
Patent
active
052974626
ABSTRACT:
An improved slotter wheel mechanism designed for use in the formation of box blanks is provided which includes a rotatable wheel assembly supporting one or more slotter blades; the blades are coupled to the wheel by means permitting shifting of the blades during rotation of the wheel assembly between an extended slotting position and a retracted blank-clearing position. In one embodiment, the blades are supported on respective blade holders each having a cam secured thereto. A stationary yoke plate adjacent the wheel assembly supports a pair of inner and outer cam grooves adapted to receive the blade holder cams. A shiftable, grooved cam switch is operatively interposed in the cam arrangement for selectively directing the blade holder cams into one or the other of the cam grooves, thereby camming the associated blade holders and blades between their respective positions. If desired, use can be made of a sectionalized slotting blade assembly having blade sections interconnected by means of a pivotal, intermediate blade section. In another embodiment, a cam assembly presents a shiftable cam portion which can be shifted to select a blade extended or retracted position and further includes a locking link assembly for locking the blade holder and thereby the blades in the selected position during rotation through the portion of the arc of travel.
REFERENCES:
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patent: 3855890 (1974-12-01), Lynch et al.
patent: 4712461 (1987-12-01), Rasmussen
patent: 4742741 (1988-05-01), Hallberg et al.
patent: 4805502 (1989-02-01), Ishigure
Jones Eugenia
The Lawrence Paper Company
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