PURPOSE: To combine simply a winding core and its holder and to take easily the holder out and in the winding core, by boring plural small-holes through the winding core holder around the projection protruding out of the holder, and by embedding magnets into the small-holes to attract the winding core around the hole being bored through the winding core, when a coil winding head is constructed by inserting the projection into the hole.

CONSTITUTION: A hole 2 is bored through the end face of a winding core 1 and a head cap 6 is fitted around the end face. The projection 4 protruding out of a winding core holder 3 is then inserted in the hole 2 to integrate the winding core 1 with the holder 3 to construct a coil winding head. Plural small-holes are bored through portions of the holder 3 around the projection 4 which do not oppose the cap 6, and each of small magnets 5 is embedded in the small-holes respectively. In this way, the magnets 5 attract the end face of the winding core 1 around the hole 2 to integrate the winding core 1 with the holder 3. Accordingly, the winding core 1 and the holder 3 can be combined simply, and the holder 3 can be easily taken out and in the winding core.