ASSEMBLY FOR AND METHOD OF GRIPPING SHEETS OF MATERIAL IN ANINTERFOLDER

摘要

A folding machine includes a first folding roll with a series of the gripp er assemblies and a series of tucker assemblies uniformly and alternately space d to interact with a series of gripper and tucker assemblies of an adjacent second folding roll . The series of alternately spaced gripper and tucker assemblies interact to grip, carry, an d release material in a manner so as to generate a folded stack of material, such as sheet material. Each of the gripper assemblies generally includes a rotatable blade, a shaft configured to rotate the blade, a spacer disposed between the blade and the shaft, and a bolt coupling the blade and the spacer to the shaft. A housing is configured with seals to retain lubricated bearings to provide rotation of the shaft of the gripper assembly and to prevent contamination of the bearings.