Scribing device with laser positioning structure

The utility model provides a scribing device with a laser positioning structure, which comprises a laser ray emitting head for emitting laser rays and an upper cross rod, the upper cross rod is arranged above the laser ray emitting head, a rotary adjusting rod is arranged below the left side of the upper cross rod, a vertical cylinder is arranged below the rotary adjusting rod, and threads are arranged on the outer wall of the rotary adjusting rod. Compared with the prior art, the laser ray emission device has the advantages that the use position of the laser ray emission head can be transversely moved and adjusted through the arrangement of the upper cross rod, the movable pulley, the inner bearing, the inner sliding groove and the connecting rod, the use height of the upper cross rod can be conveniently adjusted through the arrangement of the vertical cylinder and the rotary adjusting rod, and the laser ray emission head can be conveniently adjusted. And by arranging the movable outer ring, the connecting r