An apparatus for driving a pair of nip rollers at a variable rotational speed

• Main Authors: KINSON, JARED DAVID, EBERT, DIETER THEODOR, ST. OURS, JOSEPH ADRIAN, SPOSATO, JOHN JAMES, JR
• Format: Patent
• Language: English; French; German
• Published: 03.06.2015
• Subjects: BLASTING; CONVEYING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; HEATING; LIGHTING; MECHANICAL ENGINEERING; PACKING; PERFORMING OPERATIONS; STORING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

An apparatus for driving a pair of nip rollers at a rotational velocity that varies within each revolution is provided. A first nip roller (30) and a second nip roller (31) form a nip therebetween for moving a sheet or signature. A drive configured and arranged to drive a drive shaft at a constant rotational speed. A pair of variable rotational speed couplings (1) each have an input coupled to the drive, and an output connected to a respective one of the first and second nip rollers. Each coupling rotates its respective nip roller at a rotational speed that varies within each revolution.