Patent ID: 9061845
Filing Date: 2015-06-23
Classification: B65G,B65H

Abstract:
1. A machine for processing elements in sheet form, comprising: a plurality of workstations; a conveyor device for conveying each sheet in turn to various workstations, said conveyor device comprising a plurality of transverse gripper bars able to grasp each sheet by its frontal edge, each gripper bar having ends; two lateral chainsets connected to the ends of the gripper bars; at least one chain guide device per chainset; and at least one tensioner device for generating a tension force in the chainsets; wherein each of the at least one tensioner device comprises at least one drive member configured for generating a variable force of an intensity dependent on an instantaneous production rate of the machine, the variable force being applied to each of the at least one chain guide device per chainset, at least a portion of each of the at least one chain guide device being configured to move when the variable force is applied, each of the at least one chain guide device being a curved member extending between a first end of the curved member and a second end of the curved member.