Core pulling structure

The utility model discloses a core-pulling structure which comprises a first slide sliding block and a second slide sliding block, the second slide sliding block is connected to the first slide sliding block in a sliding manner, and a barb is arranged on the second slide sliding block; the insert is connected to the second slide sliding block, the second slide sliding block can drive the insert to slide relative to the first slide sliding block, and the insert is used for forming a mold; and the hook part of the hook-shaped shovel base is hooked and buckled on the barb, the hook-shaped shovel base can move in the vertical direction, and the hook-shaped shovel base is used for driving the second slide sliding block to slide. The arranged second slide sliding block serves as a middle transmission part to drive the insert to slide, the arranged hook-shaped shovel base is used for driving the second slide sliding block to slide, and the hook-shaped shovel base is matched with the barb, so that the hook-shaped sho