US 4,359,918 A · Die-cutting mechanism

Abstract

A mechanism for die-cutting a laminated strip includes a roll stand having an annular carrier band mounted for rotation about a vertical axis. A plurality of roll mounting assemblies are mounted for discharging strip material onto the carrier band to form a laminated strip. Each roll mounting assembly includes a pivotally mounted roll support which includes a frictional carrier so that the weight of the roll produces frictional forces for pivoting the roll into engagement with the carrier band. A feed assembly transports the laminated strip from the carrier band to a horizontally oriented conveyor belt disposed below a die-cutter driven for vertical reciprocatory movement by a first eccentrically mounted crank arm. The conveyor belt pulleys are disposed on a carrier which is mounted for horizontal reciprocating movement below the die-cutter. The connecting rod is coupled to the carrier reciprocating assembly and to a second eccentric mounted on the first eccentric. By properly proportioning the radius of eccentricity of the eccentrics and their relative rotational velocity, a zero relative velocity between the cutter head and conveyor belt can be achieved for a predetermined time during each operating cycle.

Claims14

Dependent claims

Apparatus for die-cutting a laminated strip including a carrier ring,

drive means for rotating said carrier ring about a first axis,
a plurality of support means for respectively supporting one of a plurality of rolls of strip material adjacent said ring and for rotation about a support axis parallel to the axis of said ring,
each support means being pivotally mounted about an axis spaced from and parallel to said support axis for movement toward and away from the carrier ring,
and restraint means on said support means for restricting the rotation of said rolls as said material is discharged onto said ring to produce a torque on the support for pivoting the roll into engagement with the ring,
cutter means spaced from said carrier ring,
conveying means for receiving strip material from said ring and for transporting said material in a first direction and beneath said cutter means,
first reciprocating means coupled to said cutter means for reciprocating the cutter means in a second direction normal to the first direction and into and out of cutting engagement with the strip material on said conveying means,
second reciprocating means coupled to the first reciprocating means for displacing said conveying means in said first and an opposite direction,
said second reciprocating means being coupled to said first reciprocating means for displacing said conveying means in said opposite direction for predetermined portion of the cutting stroke of said cutter means.

6 more elements

Dependencies are inferred from the claim text.

Die-cutting mechanism

Life of this patent

Die-cutting mechanism

Life of this patent

Abstract

Claims14