General Kinematics PARA-MOUNT II® feeders use a two mass design utilizing the principles of natural frequency.  The natural frequency of the unit is determined by the amount of weight and the total spring rate of the machine.  It is tuned sub resonantly, so that the motor speed is slightly below the natural frequency. As such, it will respond very positively to material load by lowering natural frequency which will increase slightly the stroke of the machine.  Please note that there are other frequencies on the chart below that are undesirable such as potential rocking frequencies in isolation frequencies.

The total spring system of the vibratory feeder is designed so that the amplitude-frequency response of the two-mass system is such that the greater the material effect, the greater the amplification of the spring-weight system. This results in an automatic increase of the amplified exciter force which automatically compensates for material head load and weight effect. This anti-damping characteristic results in accurate volumetric feed-rate control regardless of material head load variations.

For more information about GK Vibratory Feeders, please visit our feeder portal.

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