Dust core forming apparatus

A dust core forming apparatus for forming E-shaped or U-shaped dust cores, comprising:

• a die;
• an upper punch arranged to be insertable and removable along an axial direction of the die into and from the inner side of the die;
• a lower punch arranged so as to face the upper punch and to be insertable and removable along the axial direction of the die into and from the inner side of the die;
• and
• a core rod arranged to be insertable and removable along the axial direction of the die into and from the inner side of the upper punch and the lower punch, wherein
• the upper punch and the lower punch each has a horizontal cross-sectional shape corresponding to the horizontal cross-sectional shape of two dust cores that are arranged distant from each other with their respective magnetic pole surfaces facing each other, and
• the core rod has a horizontal cross-sectional shape corresponding to the horizontal cross-sectional shape of a hollow part formed between the two dust cores that are arranged distant from each other with their respective magnetic pole surfaces facing each other.