| 摘要 |
PROBLEM TO BE SOLVED: To provide a screw tightening inspection system for a game board by which an abnormality in screw tightening can efficiently be inspected at a low cost. SOLUTION: A first detecting sensor 26 for detecting an abnormality in screw tightening is provided on screw tightening devices 20, 21, 22, 23 and 24, and at the same time, a first counting means 28 for counting the number of the game boards 12 in which screws are tightened by the screw tightening devices 20, 21, 22, 23 and 24 is provided at the screw tightening position of a transferring means 10. Also, storage means connected with the first detecting sensor 26 and the first counting means 28 is provided, and when the first detecting sensor 26 detects an abnormality in screw tightening, the storage means is constituted in a manner to store the number counted by the first counting means 28. In addition, a second counting means 32 which counts the number of the game boards 12 is provided at a judging position of the transferring means 10, and when the number counted by the second counting means 32 agrees with the number stored in the storage means, an alarm means 40 gives an alarm on the abnormality in screw tightening. COPYRIGHT: (C)2006,JPO&NCIPI
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