| 摘要 |
PURPOSE:To reliably control a tray group so that it stops at a fix, by drive-controlling a means for preventing dropping of a tray, which controls a tray so that it stops at a fix, in a manner that the means is always brought to a state reverse to that of a drive motor serving as a tray elevating means in a sorter. CONSTITUTION:A sorter is constituted such that plural trays 4 (4-1-4-10), disposed in a multistage, are secured to an elevating member 6 which is adapted to elevate along a stay 7 through the medium of a chain 10 through operation of a drive motor 12. In which case, the elevating member 6 is formed in a ?- shape in cross section, notched recesses for detecting the position of the tray 4 are formed in one side wall and a position detecting sensor 16-1 for detecting the notched recess is located in place to the stay 7. Further, position detecting sensors 16-2 and 16-3 for specifying the upper and lower limit positions of the elevating member 6 are installed to the stay 7. Said drive motor 12 is provided at one end of a motor shaft 12-2 with an electromagnetic brake 12-3 which is controlled into a state reverse to that of a motor body 12-1. |
