Connecting structure of waterproof roll

The utility model discloses a connecting structure of waterproof rolls, which relates to the technical field of waterproof roll production and processing and comprises a frame. The two sides of the frame body are communicated, a plurality of sliding rails are fixedly installed in the frame body, L-shaped grooves are fixedly formed in the two corners in the frame body, bottom plates are installed on the L-shaped grooves and the sliding rails in a sliding mode, limiting grooves are formed in the bottom plates, elastic pipes are fixedly connected to one ends of the bottom plates, and the elastic pipes appear in pairs and are symmetrically distributed on the bottom plates. A fixing plate is fixedly mounted on the elastic pipe; a spring is wound on the outer side of the elastic pipe, one end of the spring is fixedly connected with the bottom plate, the other end of the spring is fixedly connected with the fixing plate, a sliding groove is formed in the bottom of the bottom plate, a middle groove is formed in the m