Scribing machine

The utility model relates to the technical field of concrete prefabricated part processing equipment, in particular to a scribing machine which is characterized by comprising a supporting rod, the topof the supporting rod is connected with a square base plate through bolts, two side edges of the square base plate in the length direction are respectively provided with a sliding rail in parallel, and the sliding rails are provided with sliding blocks. A portal frame is erected between the two sliding rails, a first driving device is arranged on the portal frame, the first driving device is connected with a transmission part, the transmission part is connected with the sliding rails, and the portal frame moves on the sliding rails based on the first driving device; and a scribing device is connected to the portal frame in a sliding manner. The laser marking machine has the advantages of being high in marking precision and high in working efficiency. 本实用新型涉及一种混凝土预制件加工设备技术领域，更具体地说，它涉及一种划线机，其技术方案要点是：包括支撑杆，所述支撑杆顶部通过