Preparation device and method of carbon fiber composite material tensile sample

The invention provides a preparation device of a carbon fiber composite material tensile sample. The preparation device comprises a winding core mold, a bottom plate, a cover plate and a winding clamping shaft, and the winding core mold is provided with two processing surfaces and two cut-off surfaces; each processing surface comprises a plurality of mold forming areas and a mounting area; each mold forming area is provided with at least one winding grooves which are distributed at intervals and are suitable for preparing the carbon fiber composite material tensile sample; the cut-off surfacesare cambered surfaces, and a processsing groove is formed along the vertex of the cambered surface of each cut-off surface; the bottom plate is positioned on one side of the winding core mold and isdetachably connected with the mounting areas; the cover plate is positioned on the other side of the winding core mold and is detachably connected with the mounting areas; and one end of the winding clamping shaft is connected