SLIDE CORE DEVICE

PROBLEM TO BE SOLVED: To provide a slide core device which is compact and with a simply structured slide core.SOLUTION: The slide core device comprises as follows. When the slide core 1 which is movable between an open position and a close position is positioned at the close position, if a cam member 4 is moved from a predefined upper position to a lower position, a swing member 43 of the cam member 4 which gets over a level difference part 14 of the slide core 1 and a cam surface 42 above the swing member 43 faces a slope 12 provided to the level difference part 14, and then when the cam member 4 is moved from the lower position to the upper position, the cam surface 42 acts on the slope 12 and the slide core 1 moves from the close position to the open position.