The utility model relates to a
laser dotting timing trolley which comprises a trolley with idler wheels. The
laser is slidably arranged on the trolley, the sliding direction of the
laser intersects with the moving direction of the trolley, and the laser is provided with a laser head facing the bottom of the trolley; the laser driving
assembly and the pulse
signal generator are respectively arranged on the trolley, and a display screen and an adjusting key are respectively arranged on the pulse
signal generator; the laser driving
assembly is electrically connected with the laser and the pulse
signal generator. The laser dotting structure is integrated on the trolley, so that the
paper tape and the dotting timing trolley are separated, the friction between the
paper tape and the dotting timing trolley and the precision influence caused by the friction are reduced, the dotting error is reduced, and the dotting convenience and precision are improved; the pulse
signal generator can adjust the laser dotting frequency and the dotting width duty ratio of the laser respectively, the dotting position of the laser head in the transverse direction of the
paper tape can be changed by adjusting the sliding position of the laser, the
utilization rate of the paper tape is increased, and contrast experiments are facilitated.