Protective device used in metal plate processing and curing process

The utility model discloses a protective device used in a metal plate processing and curing process, which comprises a metal plate curing box, two ends of the metal plate curing box are fixedly provided with baffle plates, a rotation space with a 10 mm interval is formed between the baffle plates and the metal plate curing box, and a shielding assembly is rotatably arranged in the rotation space in a damping mode. A rotating groove is formed in one side of the metal plate curing box, and the other side of the shielding assembly rotates in the rotating groove. Through the design of the shielding assembly, after the injection opening of the metal plate curing box is shielded, normal heat dissipation of a metal plate can be achieved, meanwhile, impurities can be prevented from flying, meanwhile, through cooperation with a blocking plate and an extending baffle arranged on the outer surface of the metal plate curing box, temperature transfer can be reduced, and the heat dissipation efficiency is improved. And whe