Sliding annular water pipe crimping tool

The utility model provides a sliding annular water pipe crimping tool which comprises three outer dies, and the two sides of the middle outer die are rotationally connected with the two outer dies respectively. Two inner molds are arranged on each outer mold, after the six inner molds are matched with one another, a closed clamping cavity is formed in the inner side faces of the six inner molds, and water pipe crimping models are arranged on the inner side faces of the inner molds; an annular sliding groove is formed in the inner side face of the outer mold, and a sliding block matched with the sliding groove is arranged on the outer side face of the inner mold. Three plug pin holes intersecting with the sliding grooves are formed in the top face of the outer mold in a penetrating mode, a first plug pin is inserted into the plug pin hole in the middle of the top face of the outer mold, and a second plug pin and a third plug pin are inserted into the two plug pin holes in the two sides correspondingly. The two