▎ 摘　　要

NOVELTY - The utility model claims an outer film reel-changing device for producing graphene electrothermal film, comprising a working bracket, the inner wall of two sides of the working bracket is hinged with an upper bearing seat and a lower bearing seat; the lower end of the upper bearing seat is hinged with an output end of the stretching hydraulic cylinder, the other end of the stretching hydraulic cylinder is hinged on the working bracket; the lower end of the lower bearing seat is hinged with the output end of the second stretching hydraulic cylinder; the upper bearing seat and the lower bearing seat are respectively rotatably provided with an upper film roller and a lower film roller; the inner wall of the working bracket is fixed with an upper bearing plate; the lower bearing plate and the cylinder one fixing plate; the lower end of the cylinder one fixing plate is fixedly installed with a cylinder one; the output end of the cylinder one is fixedly installed with an upper film heat sealing plate; the lower end of the lower bearing plate is fixed with a cylinder two; the output end of the cylinder two is fixedly installed with a lower film heat sealing plate; the inner wall of the working bracket is provided with a scraping plate one; the lower bearing plate is provided with a scraping plate two. The beneficial effect of the utility model is to realize the seamless combination of replacing new and old roller and new and old film, which greatly improves the production efficiency.