Independent injection/pressure preserving mechanism for blank injector

The utility model relates to the mechanical technique field of injection mold, belonging to an independent injection/pressure dwelling structure for injection embryo machine, comprising an injector machine barrel and a plasticizing barrel. The utility model is characterized in that: a switchover seat is connected with the injection barrel with the plasticizing machine as well as the injection tube, a plurality of ''reversed T'' shaped channels are arranged on the switchover seat to make the injection tube, the injection machine barrel and the injection machine barrel communicate with each other, a controllable gate valve core is arranged inside the switchover seat which can make the ''reversed T'' shaped channels close or make the injection tube communicate with the injection machine barrel or makes the injection machine barrel communicate with the plasticizing machine barrel. As a modification, the plasticizing machine barrel is connected with the switchover seat through a tube element. Compared with the pri