Die for prefabricated part with reserved hole

The utility model discloses a die for a prefabricated part with a reserved hole. Support platform, a rail is arranged above the supporting platform; a mold body is arranged on one side of the rail; afirst threaded hole is formed in one side of the mold body; the threaded holes are distributed along a straight line; a first sliding block matched with the rail is arranged above the rail; a plurality of circular grooves are formed in the upper portion of the first sliding block. A rotary disc can be fixed in the circular groove, a stand column is inserted in the rotary disc, a cantilever extendsoutwards from one side of the stand column, a first fixing column is arranged at the cantilever end of the cantilever, a sliding groove is formed in the cantilever, a second sliding block is arrangedin the sliding groove, a second threaded hole is formed in the second sliding block, and a second fixing column penetrates through the second threaded hole. The rotary disc and the circular groove are innovatively arranged to