Plastic melting device for blow molding of packaging barrel

The utility model discloses a plastic melting device for blow molding of a packing barrel, which comprises a device body, the device body comprises a supporting sleeve, the supporting sleeve is rotatably connected with a feeding pipe, the feeding pipe is fixedly connected with a melting cylinder, the right end of the supporting sleeve is sleeved with a sealing sleeve and a heat preservation sleeve, and the right end of the supporting sleeve is fixedly connected with the heat preservation sleeve. The sealing sleeve and the heat preservation sleeve are both in close contact with the outer wall of the feeding pipe. Plastic particles fall into the material opening and roll into the melting cylinder through the inclined plate to be fed into the melting cylinder, when the feeding pipe and the melting cylinder rotate and roll the plastic particles, the material opening moves to be separated from the lower end of the hopper, at the moment, the outer wall of the feeding pipe makes contact with the lower end of the hop