US 5,868,071 A · Variable cutoff printing press

In a printing press having a pair of plate cylinders with each having a cylindrical body and a central axis of rotation, means for mounting the plate cylinders from at least one side frame such that the axes of the plate cylinders are in spaced parallel relation, the printing press also having a pair of blanket cylinders with each having a cylindrical body and a central axis of rotation, the improvement comprising:

means for mounting the blanket cylinders to the at least one side frame such that the axes of the blanket cylinders are in spaced parallel relation, the mounting means accommodating linear adjustable positioning of the blanket cylinders along spaced parallel adjustment axes, the spaced parallel adjustment axes for the blanket cylinders lying in a plane generally transverse to the axes of the blanket cylinders.

In a printing press having a pair of plate cylinders with each having a cylindrical body and a central axis of rotation, means for mounting the plate cylinders from a pair of spaced parallel side frame such that the axes of the plate cylinders are in spaced parallel relation, the printing press also having a pair of blanket cylinders with each having a cylindrical body and a central axis of rotation, the improvement comprising:

means for mounting the blanket cylinders to the side frames such that the axes of the blanket cylinders are maintained in spaced parallel relation, the mounting means accommodating linear adjustable positioning of each of the blanket cylinders along respective pairs of spaced parallel adjustment axes in each of the side frames, the spaced parallel adjustment axes for the blanket cylinders being linear adjustment axes lying generally in the planes of the side frames, the mounting means including a respective pair of linear slide assemblies in each of the side frames each of which is carried in a linear slideway so as to be axially movable, the linear slide assemblies being axially movable along the corresponding ones of the linear adjustment axes for the blanket cylinders.

In a printing press having a pair of plate cylinders with each having a cylindrical body and a central axis of rotation, means for mounting the plate cylinders from a pair of spaced parallel side frame such that the axes of the plate cylinders are in spaced parallel relation, the printing press also having a pair of blanket cylinders with each having a cylindrical body and a central axis of rotation, the improvement comprising:

a pair of linear slide assemblies in each of the side frames for mounting the blanket cylinders to the side frames such that the axes of the blanket cylinders are maintained in spaced parallel relation, the linear slide assemblies each being carried in a linear slideway to accommodate linear adjustable positioning of the blanket cylinders along respective pairs of spaced parallel adjustment axes, and at least one stop for each of the linear slide assemblies to define a preselected range of linear adjustable positioning of the blanket cylinders to vary spacing between the blanket cylinders.

In a printing press having a pair of plate cylinders with each having a cylindrical body and a central axis of rotation, means for mounting the plate cylinders from a pair of spaced parallel side frame such that the axes of the plate cylinders are in spaced parallel relation, the printing press also having a pair of blanket cylinders with each having a cylindrical body and a central axis of rotation, the improvement comprising:

a pair of linear slide assemblies in each of the side frames for mounting the blanket cylinders to the side frames such that the axes of the blanket cylinders are maintained in spaced parallel relation, the linear slide assemblies each including a blanket cylinder mounting block and a pair of linear arms extending in opposite directions from the mounting block and carried in opposed sets of linear bearings in a linear slideway, the linear slide assemblies also each including a crank mounted for pivotal movement in spaced relation to each of the linear arms extending from each of the mounting blocks on the corresponding one of the side frames, the linear slide assemblies also each including a connecting rod joining each of the cranks to the corresponding one of the linear arms to accommodate linear adjustable positioning of the blanket cylinders, and a stop for each of the cranks to define a preselected range of linear adjustable positioning of the blanket cylinders along respective pairs of spaced parallel adjustment axes whereby spacing between the blanket cylinders can be varied to permit use of blanket sleeves of different thicknesses to provide a blanket sleeve outer diameter creating a desired printing cutoff point.

Variable cutoff printing press

Life of this patent

Variable cutoff printing press

Life of this patent

Abstract

Claims26