Injection mechanism of injection molding machine

The utility model relates to a field of moulding plastics especially indicates an injection mechanism of injection molding machine, including piston, hopper, fixed plate, the chamber of moulding plastics, feed cylinder, extrusion device, nozzle, feed cylinder one end is equipped with the nozzle, be equipped with on the nozzle the extrusion device, the extrusion device includes lead screw, connecting piece, dead lever, stripper plate, the stripper plate passes through threely with the connecting piece dead lever fixed connection, the connecting piece passes through threely with the fixed platethe lead screw is connected, the feed cylinder passes the fixed plate is fixed with it, the feed cylinder other end is equipped with the hopper, be equipped with in the feed cylinder the piston, the hinge joint lead screw, piston left end part does the chamber of moulding plastics. Compared with the prior art, the beneficial effects of the utility model are that: the full shaping of the interior die cavity of mould has be