Variable cutoff alignment apparatus and method of aligning printing cylinders during a cutoff change

摘要

A variable cutoff cylinder alignment apparatus is provided. The variable cutoff cylinder alignment apparatus includes a plate cylinder support box for supporting an exchangeable variable cutoff plate cylinder, a blanket cylinder support box for supporting an exchangeable variable cutoff blanket cylinder and an alignment stop adapted to align the blanket cylinder support box and the plate cylinder support box. The plate cylinder support box supports an exchangeable plate cam and the blanket cylinder support box includes a blanket cam. The exchangeable plate cam is capable of contacting the stop and the exchangeable blanket cam is capable of contacting the plate support box to align the blanket cylinder support box and the plate cylinder support box. The plate cylinder support box and the blanket cylinder support box are capable of aligning cylinders of different sized cutoffs. A variable cutoff offset printing press and a method of aligning printing cylinders during a cutoff change are also provided.

主权项

1. A variable cutoff cylinder alignment apparatus comprising:
a plate cylinder support box for supporting an exchangeable variable cutoff plate cylinder, the plate cylinder support box including an exchangeable plate cam; a blanket cylinder support box for supporting an exchangeable variable cutoff blanket cylinder, the blanket cylinder support box including an exchangeable blanket cam; and an alignment stop for aligning the variable cutoff blanket cylinder and the variable cutoff plate cylinder, the exchangeable plate cam capable of contacting the stop and the exchangeable blanket cam capable of contacting the plate support box to align the variable cutoff blanket cylinder and the variable cutoff plate cylinder for different sized cutoffs.