Pipe fitting riveting machine

The invention discloses a pipe fitting riveting machine, comprising a rack, a clamping mold for fixing the pipe fitting and a riveting mold corresponding to the clamping mold; the riveting mold comprises a hollow mold case, the mold case is provided with a mold hole corresponding to one side surface of the pipe fitting riveting position, a sliding block and a riveting block which moves by coordinating with the sliding block are arranged in the mold case, one side of the rack is provided with a first propelling mechanism which pushes the mold case to move in the clamping mold and a second propelling mechanism which pushes the sliding block to move in the mold case, the movement of the sliding block drives the riveting block to lead the upper end of the riveting block to eject out the mold hole; a fixed mold plate and a sliding mold plate are arranged on the rack, and the fixed mold plate and the sliding mold plate are provided with the clamping mold, the riveting mold, the first propelling mechanism and the se