Sheet-fed printing machine with means for cutting sheets longitu

Details Sheet-fed printing machine with means for cutting sheets longitu Sheet-fed printing machine with means for cutting sheets longitu

1984-05-18

1986-04-22

Pearson, Charles

Printing

Rolling contact machines

Rotary

101227, 4006211, B41F 1358

Patent

active

045834598

ABSTRACT:
A cutting assembly for a sheet fed printing machine having a feed drum for supporting individual sheets and feeding them one after another to the impression cylinder for printing by the blanket cylinder, including a knife blade having a cutting edge, a knife blade support, an arm for mounting the support adjacent the feed drum, the arm being pivoted about an axis parallel to the axis of the feed drum for limited rocking movement toward and away from the feed drum, a stop and a clamp for establishing a reference cutting position for the arm, the feed drum having an anvil extending around its periphery cooperating with the edge of the knife blade for cutting of the sheet as the feed drum rotates, way surfaces between the knife blade support and the arm for guiding the knife blade support for movement in the plane perpendicular to the feed drum and along a path of adjustment which bears a shallow angle to a line of tangency to the feed drum, and a manually operated adjusting screw effectively interposed between the arm and the knife blade support for adjusting the knife blade support along its path of adjustment thereby to vary the degree of engagement of the knife blade with respect to the anvil surface.

REFERENCES:
patent: 1351751 (1920-09-01), Hoff
patent: 2360653 (1944-10-01), Davidson
patent: 3091146 (1963-05-01), Bulk
patent: 3200685 (1965-08-01), Heilbrunn
patent: 3543625 (1970-12-01), Rowland
patent: 3818827 (1974-06-01), Johne et al.

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