| 摘要 |
PROBLEM TO BE SOLVED: To provide a plate-shaped work carrier which can prevent the erroneous detection of a work detection sensor in the stop position of a stopper. SOLUTION: In the board carrier which carries a board and positions it in a specified position, a stopper unit 4 is arranged in the specified position of a shifting course, and a stopper block 4a is raised up or brought down around a pin 4b, whereby the abutment face 4c is abutted against the front end of the board 3, thereby stopping the shifting of the board 3. The stopper block 4a is provided with a board detection sensor 7 consisting of a projector 7a and a light receiver 7b, and it detects the existence of the board 3 in a position right close to the abutment part with the tip of the board 3. As a result, even if it is a board 3 which has irregular form such as an opening or the like, it can prevent the erroneous detection. |
