Pipe end cutting device for heat exchange pipes

The invention relates to the field of chemical engineering, in particular to a pipe end cutting device for heat exchange pipes. The pipe end cutting device comprises a pipe plate 1, the heat exchange pipes 3 penetrating through the pipe plate 1, a grinding machine 5 and a diamond cutting disc 14 arranged on the grinding machine 5, the device further comprises a locating column 9, the locating column 9 is arranged on the pipe plate 1 through a welding bolt 4 welded to the pipe plate 1, the locating column 9 is sleeved with a sliding seat 6, two clamping sleeves 7 are arranged on the locating column 9 at the two ends of the sliding seat 6, a through hole 16 penetrating through the sliding seat 6 is formed in the sliding seat 6, a guide rod 11 is inserted into the through hole 16, the guide rod 11 is matched with the through hole, a locking block 15 fixing the guide rod 11 is arranged on the sliding seat 6, and the other end of the guide rod 11 is fixedly connected with a connecting seat 13 of the grinding machi