Two-step calendering device for graphite and calendering method

Abstract

The invention belongs to the technical field of material preparation, and particularly relates to a two-step calendering device for graphite and a calendering method. The calendering device comprisesa main calendering structure, the main calendering structure comprises a graphite unwinding shaft, a cover film unwinding shaft, a main calendering upper roller, a cover film winding shaft, a first release film unwinding shaft and a main calendering lower roller; the calendering device further comprises an additionally-arranged secondary laminating calendering mechanism; the secondary laminating calendering mechanism comprises a secondary laminating calendering upper roller, a graphite winding shaft, a first release film winding shaft, a secondary laminating calendering lower roller, a secondrelease film unwinding shaft and a second servo motor; and the secondary laminating calendering upper roller is installed at the material outlet end of the main calendering structure, the main calendering structure is installed on an installation frame, a gap between the secondary laminating calendering upper roller and the secondary laminating calendering lower roller is controlled by a passing roller and the second servo motor, and the second release film unwinding shaft and the first release film winding shaft are fixedly installed at a material receiving end. The device provided by the invention solves the problems that graphite easily remains on a release film, calendering is insufficient, and the thickness of the graphite does not reach the standard, has a simple structure, and is convenient to use.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a two-step graphite calendering device and a calendering method. Background technique [0002] With the rapid development of the synthetic graphite industry, the types of graphite used are continuously derived. The requirements for synthetic graphite are also getting higher and higher. However, in the graphite firing process, there are many uncontrollable unknown factors, which lead to many defects in the appearance or thickness of the fired graphite. These defects will be directly reflected in the graphite calendering process. The chromatic aberration of fired graphite and the excessive thickness of foaming will directly affect the calendering of graphite. The traditional method of calendering with release film and cover film cannot completely solve such problems, and has an irreversible impact on the downstream die-cutting industry of graphite. [00...

AI Technical Summary

Problems solved by technology

[0004] In the actual production process of the heat-dissipating graphite film, due to the fluctuation of the thickness of the foamed graphite and the fluctuation of the surface quality, the peeling force of the graphite to the release film will exceed the standard (such as greater than 6.0gf / in), and the graphite film will be peeled off in severe cases Issues such as graphite debris remaining on the release film during the release film will reduce the yield of graphite calendered products and cause troubles to the production of downstream customers

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