to fig3 a to fig3 l in sequence as shown in fig3 a a first die 30 with a cavity 300 in the center thereof is provided a coil positioning die 31 is disposed in the first die 30 via a first end i e the bottom end in fig3 a of the cavity 300 and is movable therein when the coil positioning die 31 moves to a fixed position as shown in fig3 a the coil positioning die 31 is temporarily fixed to receive the coil 1 a first positioning block 310 and a second positioning block 311 are disposed at the top surface of the coil positioning die 31 the first positioning block 310 is conical or cylindrical and the second positioning block 311 is rectangular with a curved recess the first die 30 has a first terminal supporting base 301 and a second terminal supporting base 302 on a side near the cavity 300 the first terminal supporting base 301 and the second terminal supporting base 302 are different in height fig3 b is a top view of the first die in fig3 a the curved recess of the second positioning block 311 corresponds to a side of the coil 1 shape and position of the.