Apparatus for continuously cutting and removing thin trim strips

Details Apparatus for continuously cutting and removing thin trim strips Apparatus for continuously cutting and removing thin trim strips

1983-02-04

1984-06-05

Schran, Donald R.

Cutting

With means to convey work relative to tool station

Cut made parallel to direction of and during work movement

83 98, 83345, B26F 138

Patent

active

044521146

ABSTRACT:
An apparatus for continuously cutting thin trim strips from a moving printed web so as to form uniform web products and removing the trim strips from the cutting area is provided, for in-line operation with a web press. The gapping of the web is effected by a cutting cylinder with a hollow bore, which carries at least two pairs of spaced cutting knives that act against a stationary shear blade. The space between each pair of blades connects with the cylinder bore, which in turn is connected to a low-pressure source. As a printed web is fed to the cutting cylinder, the spaced knives cut trim strips in the web and these strips are removed through the space and the cylinder bore by air flow caused by the low-pressure source. The circumferential speed of the knives acting on the web is greater than the speed of the web itself, this reducing any bubbling of the web, and the width of the space between knives is greater than the width of the trim strip. This system enables removal of trim strips down to a width in the range of 1/16".

REFERENCES:
patent: 3060775 (1962-10-01), Dreher
patent: 3847045 (1974-11-01), Willhite et al.
patent: 4037501 (1977-07-01), Gladow

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