Injection device of plastic-wood forming injection molding machine

The utility model discloses an injection device of a plastic-wood forming injection molding machine. The injection device comprises a glue melting device, an extrusion ejection device and an ejection nozzle, wherein a glue melting motor base of the glue melting device and a connecting headstock are connected by adopting a deep groove ball bearing, a thrust self-aligning roller bearing and a tapered roller bearing; an extrusion material barrel and a glue melting material barrel are in parallel arranged; an extrusion ejection piston rod and a front- propelling piston rod are connected by a flange; the ejection nozzle is designed into an independent switching device with a connecting rod mechanism, so that closing of the ejection nozzle can be controlled by a handle. The injection device provided by the utility model is positioned and rotatably supported by three bearings of the connecting headstock, so that coaxiality of a blanking motor and a screw rod can be ensured; even a little deviation exists in processi