Pipe extrusion limiting water injection device and internal high-pressure forming die

The utility model provides an internal high-pressure forming die comprising a pipe fitting extrusion limiting water injection device. The pipe fitting extrusion limiting water injection device comprises a water injection rod, a limiting block and an ejector block. The water injection rod is sequentially sleeved with the limiting block and the ejection block; the outer diameter of the end, close to the pipe fitting, of the ejector block is smaller than that of the end, away from the pipe fitting, of the ejector block. The water injection rod, the limiting block and the ejector block are arranged in the pipe extrusion limiting water injection device, so that the device can limit the total length of a pipe and can also cancel secondary cutting of a port of the pipe. 本实用新型提供一种包括管件挤压限位注水装置的内高压成型模具，管件挤压限位注水装置包括注水杆、限位块、顶块；限位块、顶块依次套在注水杆上；限位块、顶块上靠近管件一端的外径小于远离管件一端的外径。本实用新型在管件挤压限位注水装置中设置有注水杆、限位块、顶块，使得该装置既能限定管件总长，又能取消管件端口的二次切割。