Positioning mechanism for man-made ear

1. A positioning mechanism for man-made ear comprising:

a shaft;

a driving device slidably secured to the shaft by a first fastener, the driving device also having a rotational wheel;

a rotational arm with an end secured to the rotational wheel;

a first sliding member having a first elongated sliding groove adjustably secured to the rotational arm by a second fastener inserted through the first elongated sliding groove; and

a second sliding member with one or more second elongated sliding grooves being perpendicular to the first elongated sliding groove, the second sliding member being adjustably secured to the first sliding member by one or more third fasteners inserted through the one or more second elongated sliding grooves, the second sliding member configured for securing a man-made ear, wherein the driving device drives the rotational wheel to rotate the arm with the man-made ear up and down ear.

2. The positioning mechanism as claimed in claim 1 , wherein the second fastener is a screw.

3. The positioning mechanism as claimed in claim 1 , wherein the third fastener is a screw.

4. The positioning mechanism as claimed in claim 1 , wherein the number of one or more second elongated sliding grooves is more than one, and the second sliding member is secured to the first sliding member by two third fasteners inserted through two of the second elongated sliding grooves.

5. The positioning mechanism as claimed in claim 1 , wherein the rotational arm has one or more protruding posts received in the first elongated sliding groove.

6. The positioning mechanism as claimed in claim 1 , wherein the driving device is a motor.