A plastic injection/ pressurized gate valve typed switching mechanism of a lid making system

The utility model relates to the field of injection molding machinery technology, particularly relating to a plastic injection/ pressurized mechanism of an embryo injection machine; a plastic injection/ pressurized gate valve typed switching mechanism of a lid making system is proposed, which comprises an injection machine barrel and an injection tube installed on a terminal part of the injection machine barrel, and is characterized in that: a valve port is arranged on the injection tube; a switching valve plug is installed on the valve port of the injection tube and divides an injection channel in the interior of the injection tube into two segments; one end of the switching valve plug is inserted into the valve port and can slide in the valve port, and the other end is movably joined with a driving cylinder which is functioned for driving the switching valve plug to communicate/ cut off the two injection channels in the injection tube. The plastic injection/ pressurized gate valve typed switching mechanism