| 摘要 |
PROBLEM TO BE SOLVED: To provide a moving-in/out device capable of preventing deformation of movable frames. SOLUTION: Linear motion bearings 5 each of which comprises a rail 51 and blocks 52 are interposed between the three movable frames 2, 3, 4 vertically slidably superposed with each other, so as to make the movable frames 2, 3, 4 at each stage move in/out. Movable frame support rollers 8 are arranged at both end parts of the movable frame in the lower side. COPYRIGHT: (C)2008,JPO&INPIT
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