The invention discloses a split sliding block structure under stroke limitation, which belongs to the technical field of injection molds. Including slider head, slider, inclined head, slider connecting seat, front mold slider seat, driving connecting rod, first driving member, inclined ejector rod, inclined ejector seat, wedging block and second driving member, the The slider head and the slider are slidably connected through the second dovetail groove, the slider head and the slider are slidably connected to the inclined head through the first dovetail groove, one end of the slider connection seat is fixedly connected with the slider, and the slider The other end of the connecting seat is fixedly connected with one end of the front mold slider seat, the other end of the front mold slider seat is fixedly connected with one end of the driving connecting rod, and the other end of the driving connecting rod is fixedly connected with the first driving member. Aiming at the problem that the core-pulling space in the prior art is too small to complete manual core-pulling, it can realize automatic core-pulling in a limited mold space, which solves the dilemma of manually taking out and placing sliders, and also avoids manual operation. The coming slider is vulnerable to risk.