Handheld steel seal marking machine

The utility model relates to the technical field of marking machines, in particular to a handheld steel seal marking machine, which comprises an external support, a driving device and an operation button which are in communication connection are arranged at the upper end of the external support, a rotatable steel belt is arranged in the middle of the external support, a plurality of concave-convex characters are arranged on the steel belt, and the steel belt is connected with the external support. Slideways are arranged on the external bracket on the two sides of the steel belt; the sliding support is installed in the sliding way in a sliding mode, one end of the sliding support is connected with a steel belt, and the other end of the sliding support is connected with the output end of the driving device through a pull rope; and the telescopic mechanism is located above the sliding support and extends along the sliding way, and the outer side of the telescopic mechanism is sleeved with an elastic body. Integr