Patent ID: 7036652

Claim:
A vibration type parts feeding method by which welding nuts are put on a parts transportation track arranged spirally along an inner wall of a vibration bowl of a parts feeder to be arranged in turn, and are transported from a parts discharging outlet at a top end of said track to a desired place, comprising: detachably installing a sorting unit, for judging normal position or abnormal position of said welding nuts, adjacent to said parts discharging outlet of said bowl, so that said parts feeder can be adapted for use with different sized welding nuts by only changing said sorting unit; wherein said sorting unit installed detachably adjacent to said parts discharging outlet of said bowl comprises a sorting plate for guiding said welding nuts along a moving direction, a sorting rail provided along said moving direction in which said welding nuts are advanced, and a width limitation plate for limiting a distance of said parts transportation track between said width limitation plate and said sorting rail; and wherein said width limitation plate can move in a direction toward and away from said sorting rail and can be adjusted corresponding to a size of said welding nuts.