Pipe fitting groove pressing machining device

A pipe fitting groove pressing machining device comprises a base, a portal frame, a mounting table, a lower pressing roller, a pipe fitting body, a supporting plate, an upper pressing roller, a sliding plate, a sliding rod, a spring, a groove pressing mechanism and a telescopic rod. The portal frame and the mounting table are mounted on the base; the lower end of the portal frame is connected with the telescopic rod; the other end of the telescopic rod is connected with the supporting plate; the upper compression roller is rotationally mounted at the lower end of the supporting plate; two groups of mounting grooves are formed in the upper end surface of the mounting table; the two groups of sliding plates are mounted in the two groups of mounting grooves respectively, and are in sliding connection with the mounting table; one end of the sliding rod penetrates through the sliding plate, extends into the mounting groove and is connected with the bottom end face of the mounting groove. One end of the spring is c