Bullet cabinet with alarm function

The bullet cabinet with the alarm function comprises an upper cover and a lower plate, the upper cover and the lower plate are jointly and fixedly connected with an arc-shaped cabinet body, a sliding groove is formed in the upper wall of the lower plate, an arc-shaped door plate is slidably connected into the sliding groove, a cabinet head is fixedly connected to the upper portion of the upper cover, and the upper portion of the cabinet head is fixedly connected with the lower wall of the lower plate. A servo motor is fixedly connected to the interior of the cabinet head and the interior of the upper cover together, a control groove is formed in the upper cover, an arc-shaped groove is formed in the inner wall of the control groove, a swing rod is slidably connected to the interior of the arc-shaped groove, the swing rod is connected with an output shaft of the servo motor, a clamping rod is slidably connected to the door plate in a penetrating mode, and the clamping rod is connected with the swing rod. The b