METHOD FOR POSITIONING HOLDER

摘要

PURPOSE:To provide a method for positioning a holder capable of shortening the time for positioning the holder to its origin position and lessening the variation in this time. CONSTITUTION:This method for positioning the holder comprises rotating the holder at a stationary rotating speed until a proximity sensor turns on and thereafter the specified time T2 elapses after receiving an injection completion signal for commanding the rotation stop of the holder, then once stopping the holder by turning off the rotational driving of the holder. The specified time T2 is preset in such a manner that the stop position of this time is near the point just before the on position of the proximity sensor. The holder is further rotated and is positioned at its origin position at the origin resetting speed and creep speed lower than the stationary rotating speed after the holder is once stopped in the manner described above.