Alternate traction supporting type laser cutting machine

The utility model discloses an alternate traction supporting type laser cutting machine which comprises a platform and supporting plates, the supporting plates are installed on the front side and the rear side of the platform, a sliding table is fixedly installed in the middle of the top end of each supporting plate, a first sliding block is slidably connected to the top end of each sliding table, and a bearing bottom block is fixedly installed in the middle of the top end of each first sliding block. A laser cutting machine body is mounted at the top end of the bearing bottom block through a dismounting and mounting mechanism, laser emitting heads are fixedly mounted in the middle of the outer wall of the laser cutting machine body, the top ends of the two sides of the supporting plate are fixedly mounted at the bottom ends of the outer walls of the inner sides of the side mounting plates, and telescopic rods are movably connected to the middles of the outer walls of the inner sides of the first sliding bloc