| 摘要 |
PROBLEM TO BE SOLVED: To provide a weft locking pin device having a structural part for buffering the reciprocating motion of a locking pin in which the bound quantity at the both edge positions of the reciprocating motion can be sufficiently reduced, and stability against the change of temperature and a long life and high reliability can be realized. SOLUTION: This device is constituted of a bi-directional plunger having a non-magnetic shaft 40 supported so as to be freely slidable, a magnetic yoke 41 fixed to the outer peripheral part of the central part of the shaft 40, a flange part 42 formed so as to be projected from the outer periphery of the magnetic yoke 41, a first coil 21 for driving the shaft 40 to one direction by an electromagnetic power, and a second coil 22 for driving the shaft 40 to the opposite direction by an electromagnetic power. Also, rubber dampers 51 and 52 whose hardness is ranging from 51 degrees to 85 degrees as an impact absorber made of butyl rubber are arranged at positions faced to the both faces of the flange part 42.
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