Telescopic shaping mold for water stop type reserved hole of cast-in-place slab

The utility model discloses a telescopic shaping die for a water stop type reserved hole of a cast-in-place slab. Mould comprising a mould body, a fixing rod fixedly connected with a cast-in-place slab bottom die is arranged in the center of a reserved hole in the middle of the die body. The die body is composed of four combined modules which are connected end to end around a fixing rod, every twoadjacent combined modules are connected in a sliding mode, one set of opposite sides of the die body are each provided with an angle steel telescopic device, an angle steel lifting beam is arranged between every two angle steel telescopic devices, and the middle portions of the angle steel lifting beams are fixed to the fixing rod. A shaping mold with a tongue-and-groove type water stop structureis adopted; the anti-seepage performance of the reserved hole is effectively improved; the size of the reserved hole can be freely adjusted through a telescopic structure of the mold according to thedesigned diameter of the p