1results about How to "Improve cost competitiveness" patented technology

The application discloses a flange-free pipe expanding machine and method for heat exchangers, which comprises a stamping mechanism and a supporting tool, the supporting tool comprises a fixed seat, the upper side of the fixed seat is connected with a sliding plate through a slide rail, the upper side of the sliding plate is connected with a bottom plate, the upper side of the bottom plate is connected with a plurality of longitudinally arranged floating blocks, and the upper side of the bottom plate is also provided with supporting blocks; the stamping mechanism comprises a supporting frame, the supporting frame is connected with a stamping driving device, the driving end of the stamping driving device is connected with a lifting positioning plate, the lower side of the lifting positioning plate is connected with a plurality of stamping rods, and the lower end of the stamping rod is connected with a pipe expanding end; the floating blocks arranged on the bottom plate offset the downward pressure of the stamping rods on the cooling pipe during pipe expanding, so that the length of the upper end of the cooling pipe extending out of the tube plate after pipe expanding is sufficient and in a uniform alignment state, and the sealing property and corrosion resistance of the tube plate are ensured.