| 摘要 |
<p>PURPOSE:To accurately position a hand toward a housing room by advancing or retreating the hand until it is positioned where a photo sensor detects a light beam reflected by a reference plane formed in parallel with the front of a partition plate and larger in size in the direction of moving the hand than the amt. of a positional discrepancy between the hand and the housing room. CONSTITUTION:The reference plane is provided as formed in parallel with the front of the partition 2 in a housing space and larger in size in the direction of moving the hand 4 than the amt. of a positional discrepancy between the hand 4 and the housing room 3. Then, a moving device 5 is controlled by a distance setting means 22, so as to advance or retreat the hand 4 until it is positioned where the photo sensor 6 detects a light beam reflected by this reference plane. Consequently, the hand 4 disposed in its position facing the reference plane by the moving device 5 is hence disposed with a prescribed gap against the reference plane, so that the distance between the reference plane and the photo sensor is kept to be a prescribed distance, thus enabling the photo sensor 6 to detect securely the position of the partition plate 2. By this method, the hand can securely be positioned in the corresponding position to the housing room.</p> |
