Electromagnetic roller for preparing composite material

An electromagnetic roller for preparing a composite material comprises a supporting shaft, supporting bearings are arranged on the two sides of the supporting shaft, flange plates are arranged on the outer sides of the supporting bearings, annular roller bodies are arranged on the inner sides of the flange plates respectively, an outer roller body is arranged between the annular roller bodies, and an inner heat preservation layer is arranged on the inner side of the outer roller body. A winding ring is arranged on the inner side of the inner heat preservation layer, a heating coil is arranged on the outer side of the winding ring, and a plurality of temperature probes are arranged in the annular roller body. The multiple circles of induction heating coils are arranged on the winding ring, the heating coils are located between the winding ring and the heat preservation layer, and the temperature probe is arranged on the circumference of the annular roller body so that the accuracy of temperature measurement an