Rolling type rebar plate surface line drawing tool

The utility model discloses a rolling type steel bar plate surface line drawing tool which comprises a connecting plate and a roller, L-shaped installation plates are connected to the two ends of theconnecting plate in a sliding mode, installation holes are formed in the bottoms of the two L-shaped installation plates, connecting shafts are fixedly arranged at the two ends of the roller, and thetwo connecting shafts are connected with the two installation holes in a penetrating mode respectively. The steel bar marking machine has the advantages that by means of the marking pen embedded in one side of the roller, when the roller rotates by a circle, traces can be left on the surface of a steel bar plate, and therefore a plurality of evenly-spaced lines can be marked on the surface of thesteel bar plate by directly pushing the roller to rotate through the handle; the scribing is accurate, and the working efficiency is improved; the length of the whole tool can be conveniently adjustedthrough the arranged suppor