公开(公告)号：US11603276B2

公开(公告)日：2023-03-14

申请号：US17255390

申请日：2019-07-04

Applicant: BOBST MEX SA

Inventor： Stephane Chesaux ,  Jean-Claude Rebeaud

IPC: B65H5/14

Abstract: The invention relates to a gripper bar body for a gripper bar in a gripper carriage arrangement in a machine for treating sheet material, the gripper bar body being configured to carry gripper brackets for movement between sheet gripping and sheet releasing positions. The gripper bar body is formed as a hollow structure comprising at least two different materials, the two different materials comprising at least a metal material and a composite material and the at least two different materials being at least partly arranged in a superposed manner. The resulting bar has a better resistance to wear than the ones of the state-of-the-art.