| 摘要 |
<p>PURPOSE:To stop a blank transfer roller at the time of the occurrence of blank jam for preventing the blank from being crammed in the blank jam irrespective of the blank transfer time depending on the length of the blank by providing two shutter parts for screening a photo-sensor in a position at a certain angle to a support shaft of a blank detecting actuator. CONSTITUTION:While a passing blank 2 is jammed at a part of a blank detecting actuator 3, the blank detecting actuator 3 is pushed upper than that under the normal blank travelling condition by the choking blank, so that the blank jam detecting shutter part 7 of the blank detecting actuator 3 screens the photo-sensor 4 of a photo-sensor detecting part 6 to detect the blank jam and stop the rotation of transfer rollers 1a, 1b.</p> |
