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.

公开(公告)号：US11827478B2

公开(公告)日：2023-11-28

申请号：US17596117

申请日：2020-06-02

Applicant: BOBST MEX SA

Inventor： Yann Delley ,  Steven Stojanovic-Roth ,  Jean-Claude Rebeaud

IPC: B65H29/68

CPC classification number: B65H29/686 ,  B65H2406/3661 ,  B65H2406/411 ,  B65H2701/1313

Abstract: The invention relates to a suction brake for use with a sheet conveyor configured to convey a succession of flat elements in sheet form along a conveying path between a first location and a second location, the suction brake comprising:



a hollow body having an interior cavity and a face that defines a plurality of suction apertures that communicate with the interior cavity;
an obturator arrangement coupled to the hollow body and moveable with respect to the suction apertures;
the obturator arrangement being moveable between an open position, in which the obturator arrangement exposes the suction apertures to a maximum extent, and a restricted position, in which the obturator arrangement occludes the suction apertures to a maximum extent. The obturator may rotate or be linearly translated in moving between the open and restricted positions.