Coiler device for rolled strip

#The invention concerns a coiler for rolled strip, which comprises at least one driven troughed roller for turning a coil during coiling or uncoiling of a rolled strip and a roller table upstream or downstream of the coiler.

#Coilers with troughed rollers are generally used in the exit section of a hot wide strip or in hot strip conveyance. The function of the troughed roller is to turn the coil with its drive and to drive the rolled strip to a shear, which is arranged perpendicularly next to the coil conveyance system. The coil is cropped at the shear, and samples are cut from the rolled strip.

#Prior-art troughed rollers are designed with fixed diametral dimensions and are designed for an approximate radius adaptation with a concave contact surface for the coil. During the turning of cambered coils, this leads to marks on the circumference of the coil due to line contact rolling effects. The previously known designs of troughed rollers are also very stiff due to their dimensions and do not allow flexure of the roller.

#Additional details, features and advantages of the invention are disclosed in the following explanation of the specific embodiment of the invention which is schematically illustrated in the drawings.

#FIG. 1 shows a sectional view of the troughed roller in a plane perpendicular to the axis of rotation.

#FIG. 1a shows a front view of two spaced troughed rollers holding a load in the form of two unequally large coils.

#Taken together, the drawings of FIGS. 1, 1a, 1b, and FIG. 2 show that the bearing surface 3 of the troughed roller 1 is designed with a series of adjacent outer collars 4 of different diameters, which surround the core 5 of the troughed roller 1. The bearing surface 3 is uniformly supported by spring-tensioned support members 6 that project from this core 5 against the outer collars 4 from the inside. In this regard, the contact line 7 of the troughed roller 1 is acted on with uniform contact pressure along its entire longitudinal extent L.

#The surfaces of the support members 6 in contact with the outer collars are curved to adapt them to the inner circumference of the outer collars 4. The back of each of these support members is lined with a set of disk springs 8 with predeterminable pretensioning. To achieve this, the support members 6 are mounted in the outer collars 4 with pretensionable spring force.

#In addition, to compensate a load-related flexure of the troughed roller 1, which can be calculated or empirically determined, it is provided that the outside diameters of the outer collars 4 increase towards the middle of the troughed roller 1.