Patent ID: 6206180
Filing Date: 2001-03-27
Classification: B65G

Abstract:
In a vibratory parts-feeder comprising:(A) a feeder bowl in which a spiral track is formed,(B) a vertical exciter with a first electromagnetic coil for exciting said feeder bowl in the vertical direction,(C) a horizontal exciter with a second electro-magnetic coil for exciting said feeder bowl in the horizontal direction,(D) first spring means for supporting said feeder bowl so as to be vibratile in the vertical direction, and(E) second spring means for supporting said feeder bowl so as to be vibratile in the horizontal direction, wherein there is a phase difference between the currents flowing through said first and second electro-magnetic coils and said feeder bowl is elliptically vibrated, the improvements in which phase adjusting means is connected to said first or second electro-magnetic coil, and the ratio of the longer to the shorter axis of the elliptical vibration or the inclination of the long axis of the elliptical vibration is varied with the adjustment of said phase adjusting means, so as to obtain an optimum condition with respect to a shape or size of a part to be fed, or with respect to orientation of a part to be fed.