Veneer clipper

Details Veneer clipper Veneer clipper

1974-11-11

1977-08-16

Schran, Donald R.

Cutting

Cutter with timed stroke relative to moving work

Uniform periodic tool actuation

83659, 83582, 83563, 83561, B27L 508

Patent

active

040418200

ABSTRACT:
An anvil roll has a steel core and an outer portion of polyurethane. The roll is slightly rotated after a number of veneer clipping operations by a clutch which drives the roll after the roll is pushed by a knife down away from arcuate braking surfaces. An airbag normally urges the roll into engagement with the braking surfaces and is collapsed during adjustment of the roll. Operation of the clutch is prevented during the clipping operation. A double-acting cylinder drives the knife through a toggle joint linkage, and cushioning cylinder means aid in overcoming inertia of the knife at the start of a clipping cycle and also cushion the return of the knife. The cylinder has poppet check valves to rapidly admit air thereto.

REFERENCES:
patent: 2405598 (1946-08-01), Miller
patent: 3837250 (1974-09-01), Lumm
patent: 3850066 (1974-11-01), Shaughnessy

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