Abstract: The disclosure relates to an apparatus for the arrangement and preparation of cores (13) intended for use as reel cores in papermaking in a number of stations with tools for carrying out a number of working operations in and/or on each one of the ends of the cores (13), the stations being disposed in side-by-side relationship and having opening and closing grippers (16) for fixedly retaining the core (13) which is to be arranged and prepared, in each respective station during the execution of one or more working operations therein, the opening and closing grippers (16) being disposed on the one, free end of an arm (17) which is located at each end of the core (13) and which, at the opposite end in relation to the opening and closing grippers (16), is pivotal about a shaft (18) located beside the station.