Position detection device and method of connector shell

The invention provides a position detection device and method of a connector shell. The device can detect the actual position of the connector shell in high precision and can accurately correct the position. The device comprises a laser sensor (50) and a position control part, wherein a optical axis (51a) of the laser sensor is arranged forwards an orthogonal direction of the moving path direction of the connector shell (80) arranged on a fixed disc (10), the position control part which can detect the one end position and the other end position of the appearance shape of the moving direction of the connector shell (80) based on the signal outputted by the laser sensor when the connector shell (80) moves, the reference position of the connector shell (80) can be determined through calculation based on the detected the above one end position and the other end position. An angle obtained by time points of laser and lightproof switching or not serves as the position information, and the center position of the wid