Semi-automatic locking zipper

The utility model relates to the technical field of zippers, and discloses a semi-automatic locking zipper which comprises a zipper body, a zipper head is slidably connected to the periphery of the zipper body, a pressing mechanism is fixedly connected to the top of the zipper head, a limiting mechanism is fixedly connected to the bottom of the pressing mechanism, the pressing mechanism comprises a supporting frame, and the supporting frame is fixedly connected to the top of the zipper head. The front face of the supporting frame is fixedly connected with a fixing plate. When two zippers need to be meshed, a pull ring is pulled, so that the pull ring can drive a moving plate to move through a rotating ring and a short rod, the moving plate can drive a pressing plate to move, when the moving plate slides on the periphery of a fixed rod, a first spring can be extruded, and when the pressing plate moves, an arc-shaped plate cannot be extruded; and when the pull ring is not subjected to external force, the first