Camera device which can be lifted and lowered automatically

The utility model provides a camera device which can be lifted and lowered automatically. The camera device comprises a body, a stepping motor, a synchronous belt, two synchronous pulleys, a slide support, a slide platform, a camera, a lens, a light source, a photoelectric sensing sheet, two photoelectric sensors, two linear guide rails, and two slide blocks. The automatic lifting and lowering device of the camera is used to change the focal distance between the lens and an inspected product surface. The precise linear guide rails are arranged in the device for ensuring that the verticality between the camera lens and the inspected screen is unchanged in the lifting and lowering process. In the lifting and lowering process, the synchronous belt is driven by the stepping motor, and the slide support which is fixedly connected with the synchronous belt is slid up and down on the two linear guide rails through the slide block so as to drive the up-and-down movement of the camera device. The photoelectric sensing