New vibration hopper feeder using cylindrical UDCRR spring

The parts feeder of a bowl type which has been widely utilized in the automatic assembly line of the factory is constituted by the bowl, the spring and driving mechanism. The usual feeder has the inclined leaf springs to give the bowl the vibration with the components of vertical and rotary directions. By using such a vibration. the parts can be conveyed along the passage provided on the bowl. In the new feeder stated in this paper, the FRR (fiber reinforced rubber) cylinder is used instead of the leaf springs. Because of the anisotropic elasticity of the FRB material, the bowl of the feeder vibrates in the same manner as that of the feeder with the leaf springs, and also has the parts feeding ability. Here, the experimental results obtaind in the new feeder of the howl type are described and the vibration of the feeder by the electromagnetic drive and conveying velocity are analyzed theoretically.