| 摘要 |
PROBLEM TO BE SOLVED: To increase a degree of freedom at the time of installing a member on a side of a movement path where a can body moves.SOLUTION: An upper exciting coil R1 and a lower exciting coil R7 function as electromagnets, a magnetic field is formed around a mandrel 7 by controlling electric conduction to the upper exciting coil R1 and the lower exciting coil R7, and thereby the mandrel 7 provided with a permanent magnet moves downward. Concretely, the mandrel 7 formed into the cylindrical shape moves downward along a movement path R51 with one end in the axial direction as a top, and a can body 5 also moves downward along the movement path R51 with one end as the top following the movement of the mandrel.SELECTED DRAWING: Figure 4 |
