Strip Guidance on the coiler
The strip guiding system on the coiler ensures coils with straight lateral surfaces, which prevents damage to strip edges during further transport and handling. A strip edge guiding system is generally used for this purpose. A strip centre guiding system is recommended when a strip is coiled with natural edges and needs to be fed centrally to further processing stages. As the strip does not always leave the processing area at the same point, the recoiler follows the lateral migration of the strip to ensure that the coil is wound with a straight edge.
Strip edge measuring systems for coilers must be installed in the immediate vicinity of the deflector roll and connected to the movable part of the coiler. This connection may be mechanical or, as shown in this example, separate synchronous run control may be used. In addition, it is of utmost importance that the strip clings to the deflector roll and does not slip or incline. An adequate wrap angle on the deflector roll and sufficient strip tension must ensure that the strip closely follows the roll contour - large roll diameters are recommended.
For coiling strip material with slightly thickened edges, which is likely to occur when applying a surface coating, the system and the equipment are extended to cater for staggered winding. A constant pattern of the serrated coil edge is achieved by taking account of coiler speed and sheet thickness.
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