PURPOSE: In all parts arranger/feeder provided in a shoot to be coupled with a parts feeder, to release biting of parts efficiently by reciprocating a rotary member if the part doesn't pass said rotary member for changing the parts position within predetermined time.

CONSTITUTION: The position of parts to be discharged while being arranged onto a shoot 21 from a vibration parts feeder 20 is decided by a parts position decider 23 the output of which is used for controlling a horizontal rotary section 24 and vertical rotary section 26 to arrange the parts position in predetermined state. Here the parts passed through each rotary section 24, 26 are detected the passing by parts pass detectors 25, 27 then carried to next process. If said detectors 25, 27 will not detect passage of parts within predetermined time, it is decided to be biting thus to control each rotary section 24, 26 to reciprocate.