Machine for rolling and curving printing plates

Details Machine for rolling and curving printing plates Machine for rolling and curving printing plates

1975-01-29

1976-02-10

Mehr, Milton S.

Metal deforming

By deflecting successively-presented portions of work during...

By use of deflectors arranged to bend work longitudinally of...

72DIG14, B21D 514

Patent

active

039370526

ABSTRACT:
A machine for rolling and curving a metal backed rubber printing plate to conform it to the circumference of a printing cylinder. The machine includes a deflection bar having a longitudinal groove therein which accommodates and partly recesses a forming roller of small diameter. The bar is supported between a pair of clamping blocks which are pivotally mounted, means being provided to simultaneously swing the blocks to a predetermined degree to bow the bar and the roller held thereby. Cooperating with the forming roller is a large diameter driven roller of elastomeric material whose position relative to the forming roller is adjustable to define a nip for receiving the plate to be curved and for pressing the plate against the forming roller as it is conveyed through the nip to impart a desired curvature thereto, the bow formation of the forming roller producing a radius of curvature in the plate which gradually increases as one goes from the center to the outer edge thereof.

REFERENCES:
patent: 2394019 (1946-02-01), Socke
patent: 2454282 (1948-11-01), Johnson
patent: 3205689 (1965-09-01), Joseph
patent: 3371513 (1968-03-01), Achler et al.
patent: 3442109 (1969-05-01), Drolot

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