The application discloses a method and equipment for producing multipurpose
thermoplastic composite materials in one step, and the method comprises the following steps: vertically conveying continuous reinforced
fiber bundles and stitching felt downward, so that the continuous reinforced
fiber bundles and the stitching felt pass through a preheating and pressurizing cavity filled with a
molten metal medium and a
resin infiltration cavity filled with a
thermoplastic resin melt in sequence, and the two cavities are isolated by a U-shaped or S-shaped return bending structure; and shaping in a forming and cooling mold, pulling out by a traction device and
cutting by a
cutting device. The application utilizes a
liquid column of the
molten metal medium to improve static pressure and preheat, and solves the problems of insufficient
fiber infiltration and process limitations in the prior art; the application can realize
continuous manufacturing of high-fiber-content
thermoplastic composite materials, and the obtained composite materials have the characteristics of sufficient infiltration, low
porosity and excellent mechanical properties; and the produced thermoplastic composite materials are widely applied in the fields of
aerospace, automobile manufacturing, building, furniture production and the like, and can replace aluminum profiles, wood, steel and the like.