System information

Function

Lateral displacement roller systems ELPLACER position moving webs via the axial movement of the positioning roller. Here, if the positioning roller reaches the end position, the material is lifted by a device, the positioning roller is centered and the web is set back down. As the lateral displacement roller is only used in production systems with cycled operation, the process of lifting the web must always take place during stop times.

Area of use

The area of use extends primarily to tire building machines, because the webs such as the ply and the inner liner are fed in from the loop in cycled operation.

Application

Infeed is always from the loop from the bottom upward and should be kept as short as possible. The sensor should be positioned behind the positioning roller, as near to it as possible. The infeed path should be the equivalent of half to a full web width.

Guiding geometry and longitudinal tension distribution

Legend

A-A = Web tension distribution at infeed | B-B = Web tension distribution at exit | K = Web correction | a = Correction angle | σ1 = Basic web tension | AB = Operating width | 1 = Pivot point | 2 = Infeed roller | 3 = Lateral displacement roller | 4 = Sensor | 5 = Locking roller | L1 = Infeed path | L2 = Exit path

Function sequence – lateral displacement roller

Web guiding systems

Lateral displacement roller system SVB13

Compact lateral displacement roller system with lift-off device for roller centering

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Lateral displacement roller system SVB23

Compact lateral displacement roller system for two webs with lift-off device for roller centering

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Lateral displacement roller system SVB43

Compact lateral displacement roller system for fabric webs with a large bending radius, incl. lift-off device for roller centering

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System components

Infrared edge sensor PoE FR 54

Infrared edge sensor based on the principle of retroreflection with a measuring range of ±10 mm and a resolution of 0.02 mm

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Infrared wide band sensor PoE FR 61

Infrared wide band sensor with large measuring range of 160 mm, 320 mm or 480 mm

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Infrared wide band sensor FE 46

Digital infrared wide band sensor for web center detection, web edge detection, and width measurement with a tube distance (clear width) of 160 mm

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Command station DO 42

Visualization and operation of web guiding systems with multiple operation of up to 255 web guiding control loops

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Data network center DN 40

Data network center for central connection of all components in a control system

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