Low friction roll

Abstract

The machine has a reinforcement member formed from fiber composite. The reinforcement member is located between two rotational bearings (2a, 2b). The reinforcement member comprises a fiber composite material pipe (3) that is located against an inside surface of a roll (1). The reinforcement member comprises fiber composite material strips that run parallel to roll axis, and are arranged inside the roll to extend radially outward from the roll. A stationary shaft (8) extends along entire length of the roll. An independent claim is also included for a printing press comprising a roll body.

Description

technical field [0001] The present invention relates to roll assemblies for use in printing presses, particularly rotary printing presses. Background technique [0002] Rotary printing presses use a large number of deflection rolls, which cannot be actively driven and cannot be actively stopped. In the event of a failure (for example, if the paper breaks), the rotary press must be stopped. Because rotary machines typically work at relatively high paper travel speeds (eg, 1000 m / min or 18 m / sec), the stopping process takes a relatively long time and wastes considerable paper (sometimes over 100 m of paper). [0003] Various designs of roller assemblies are known from the prior art to have been used in printing presses, in particular rotary printing presses. Contents of the invention [0004] The roller assembly represents a roller and two swivel bearings. The invention provides a roll to exhibit a reinforcement with a fiber composite located inside the roll. The reinfor...

AI Technical Summary

Problems solved by technology

The rotary press must be stopped in the event of a failure (for example, if the paper breaks)

Because rotary machines usually work at relatively high paper running speeds (eg, 1000m / min or 18m / sec), the stopping process takes relatively long time and wastes considerable paper (sometimes more than 100m of paper)

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