Safety device for a roll space of a calender or similar roll machine

US5439366A · kind A · utility

Assignee

• Kleinewefers GmbH · DE

Inventors

• Hans-Rolf Conrad · Dormagen, DE
• Jochen Autrata · Neukirchen-Vluyn, DE
• Albert Hille · Aachen, DE

Key dates

• Filing date: Oct 21, 1993
• Grant date: Aug 8, 1995
• Expiry date: Oct 21, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2191
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A safety device for the roll space within a calender or other roll machine is disclosed. The rolls when rotating, excite oscillations in the beam at the resonant frequency of the beam. This can occur during start-up or during normal operation. The safety device of the present invention comprises a beam and additional mass that is oscillatorily suspended from the beam in order to reduce the amplitude of the beam oscillations at the beam resonant frequency. In addition, a damping element between additional mass and the beam is used to reduce any undesired oscillations due to newly created resonant frequencies introduced into the system.