Road composite plate manufacturing method and device

The invention provides a road composite board manufacturing method and device, and relates to the field of road composite boards, the road composite board manufacturing device comprises a supporting base, a transverse frame plate, an expansion piece and a workbench, an opening groove with an upward opening is formed in the supporting base, two movable threaded shafts are rotationally arranged between the two walls in the opening groove, and the positions of the movable threaded shafts on the two sides are symmetrical. According to the scheme, the interval between the stacked supporting plates on the two sides is changed, then the composite plate materials with different widths can be adapted, the manufacturing efficiency of the composite plate is improved, the manufacturing precision of the composite plate is improved by repeatedly pressing different parts of the composite plate downwards, and the composite plate can be manufactured according to the specific requirements of the composite plate before the mate