Plastic-wood sectional bar co-extrusion die

The utility model discloses a plastic-wood sectional bar co-extrusion die. The co-extrusion die comprises a head co-extrusion die section and a shaping main die section connected with the head co-extrusion die section, wherein the head co-extrusion die section comprises a transition section, a pre-forming section and a forming section which are connected in sequence; the transition section is provided with a feeding column cavity; the pre-forming section and the forming section are respectively provided with a product forming cavity. The surface of the pre-forming section is provided with a co-extrusion runner; and the co-extrusion runner is communicated with the product forming cavity. By the design of the transition section, the pre-forming section and the forming section, the flow smoothness in the runner is ensured, dead angle and stagnant areas are prevented, the surface quality of extruded products is improved, the probability of die trimming is reduced, the service life of the die is prolonged and mate