Shinko Electric Company, Ltd.

Shuuichi Narukawa

Tetsuyuki Kimura

Shinji Nakashima

A moving table supports a parts conveying member. A fixed table is disposed below the moving table and supports the moving table so as to freely vibrate the moving table through a vibration generator. The vibration generator includes a first elastic member and a piezoelectric element mounted to the first elastic member. One end of the first elastic member is fixed to the moving table and the other end is fixed to the fixed table. A support member includes a second elastic member. One of the second elastic member is fixed to the moving table and the other end member is fixed to the fixed table. Accordingly, the piezo-driven parts feeder can be reduced in height, the stress that acts on the vibration generator can be restricted, sufficient amplitude can be ensured and the stress on the vibration generator can be restricted even during high-frequency driving, and the replacement of the vibration generator and the change and control of the resonance frequency can easily be performed.

Piezo-driven parts feeder

Provided is a part carriage device which can smoothly convey a part. A base part, a piezoelectric vibration part, a weight part, a vibration transmission part, a carriage way are arranged from a lowest side of a piezo-driven parts feeder in this order. In addition, a straight line Lfor connecting a barycentric position of the piezoelectric vibration part, a barycentric position of the vibration transmission part, and a barycentric position of the weight part is approximately in parallel to a carriage angle &#x3b1;

Part carriage device

Piezoelectricity-driven part feeder

In a circulating vibratory linear parts-feeder including: a main trough for transporting parts in one direction; and a return trough for transporting the parts in the opposite direction to the one direction, arranged closely to the main trough, and spaced with a small gap from the main trough, in which the parts are transferred from the downstream end of the return trough into the upstream end of the main trough. The parts are orientated in the main trough by orientating means and discharged from a discharge end to the outside and the other parts are returned from the downstream end of the main trough into the upstream end of the return trough. Thus the parts are being continuously circulated in the main trough and return trough. The main trough has a transport surface for orientating the parts, and an inward circulating surface which is lower than the transport surface. The return trough includes a circulating surface. The main trough and the return trough are vibrated by drives of different frequencies, respectively; and the parts are transferred from the downstream side of the return trough to the upstream end of the transport surface. The orientated parts are discharged from a discharge guide connected to the end of the main trough; and the parts being led into the inward circulating surface are transferred into the circulating surface of the return trough.

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Toyohashi, Japan

Shuuichi Narukawa