The ring will jump up the core and, if it does not fly clear of the core, will bounce up and down in a swing-like manner, finally coming to rest at a point some distance up the core from the coil.

Under the action of variation magnetic field, the permanent magnet moving-coil drives the plunger pump to move up and down and lift oil up to ground.

The utility model relates to an industrial forming mold for motor coil down lead lug, which belongs to the motor production, in particular to an universal elbow mold for motor coil down lead lug.