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Strip Centering on welding machines and stitchers

Perfect positioning of the strip

[Translate to English:] Bandzentrierung

The start and end of a strip are joined together in the inlet area of continuous strip processing lines. This is conducted by means of stitchers or welding machines, depending on the strip material, strip thickness and the type of system used.

Modern stitchers and welding machines include fully automatic centring devices upstream and downstream of the stitcher or welding machine respectively. Mechanical edge centring devices are predominantly used, which always entail the risk of damaging the strip edge. EMG's space-saving solution for aligning the tail end of the strip with the start of the new strip has often proved to be a suitable method, particularly when retrofitting a system.

The sensors installed upstream of the welding machine or stitcher detect the width and position of the new strip. These values and the previously stored width of the terminating strip are used to produce the reference position, and the photocells downstream of the welding machine or stitcher are positioned accordingly. The terminating strip is then centred in relation to the axis and angle of the strip by the centring frame, which guides the strip via a clamping bar or, in the case of thicker strip material, two clamping bars.

The system can also be designed to align the start of the new strip with the end of the terminating strip.
Strip centring systems from EMG are space-saving and easy to retrofit into existing production lines. A special centring frame ensures perfect positioning of the strip without causing any damage to the strip edges.

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