Lower mold core insert

A lower mold core insert relates to the technical field of a mold and comprises a lower mold core insert main body (1), ejector pins (2), a first water channel (3), a second water channel (4), a third water channel (5) and ejector sleeve pins (6), the first water channel (3), the second water channel (4) and the third water channel (5) run through the lower mold core insert main body (1), the lower mold core insert main body (1) is uniformly provided with a plurality of ejector pins (2), and a plurality of ejector sleeve pins (6) are arranged on the junction of every two ribbed positions of the lower mold core insert main body (1). Due to adopting the lower mold core insert, the junction position of the ribbed positions of the lower mold insert can be improved, partial ejector pins can be changed to the ejector sleeve pins, and the lower mold is additionally provided with water channels, so that the mold injection molding period can be reduced when the mold is in injection molding, the rejection ratio is good