Lens hot-pressing demolding device

The utility model relates to the technical field of lens forming, and discloses a lens hot-pressing demolding device which comprises a lower mold box, a top cavity and a bottom groove are formed in the top and the bottom of the lower mold box respectively, and a lower mold cavity, a bottom cavity and a through hole are formed in the lower mold box respectively. As the hot press moves upwards, the discharging frame is pushed, the movable plate is driven to be sleeved along the sliding groove and seal the top cavity, and the electric push rod is started, the electric push rod drives the connecting plate and the control rod to move downwards, slides out of the through hole along with the control rod and moves to the position below the side hole along the sleeve. As the filled clear water enters the sleeve through the side hole and pushes the lens in the lower mold cavity upwards, the lens is pushed away to complete demolding, the pumped water flow is matched with the impact force of the water flow, when the cont