Gap-adjustable automatic calendering device for graphite heat-dissipation film

Abstract

The invention discloses a gap-adjustable automatic calendering device for a graphite heat-dissipation film. The device comprises a base, an upper press roller, a lower press roller, a first unwinding roller, a second unwinding roller, a third unwinding roller, a first winding roller and a second winding roller, wherein the upper press roller and the lower press roller are arranged on the base; a gap between the upper press roller and the lower press roller is adjusted by a position adjusting assembly; a stripping mechanism is arranged at the front end of the second winding roller. According to the calendering device, smooth and clean surfaces of the press rollers are guaranteed, raw materials are saved, equipment can operate stably for a long time, and product quality is improved; production flexibility of the equipment is improved, and the relative position of the upper press roller and the lower press roller can be adjusted in time to meet the required calendering standard; the stripping position is adjusted by the stripping mechanism according to speed difference of the first winding roller and the second winding roller, so that an assisting film and a composite film can be conveyed under better tensile force, quality of the graphite heat-dissipation film is better, and overall tensile strength and color distribution are more uniform.

Description

technical field [0001] The invention relates to the field of preparation of graphite heat dissipation film, in particular to an automatic calendering device for graphite heat dissipation film with adjustable gap. Background technique [0002] Graphite heat dissipation film is a very thin comprehensive heat-conducting material, also known as heat-conducting graphite film, heat-conducting graphite sheet, graphite heat sink, etc. Graphite heat-dissipating film provides the possibility for the thinning development of electronic products. Graphite heat dissipation film has good reworkability, and can be laminated or glued with PET and other film base paper films according to the application. This material is elastic, can be cut and punched into any shape, and can be bent many times; suitable for The rapid heat conduction that converts point heat sources into surface heat sources has high thermal conductivity, so graphite heat dissipation films are often used to shield heat source...

AI Technical Summary

Problems solved by technology

[0003] Graphite heat dissipation film is compounded with other film materials. The existing technology generally adopts the method of direct calendering to form the finished product; for example, when producing graphite heat dissipation film, it is usually necessary to use PET release film as the base layer of graphite heat dissipation film and use The two are calendered to facilitate subsequent cutting according to requirements; during the calendering process, the surface of the pressing roller is required to be smooth and clean to ensure the quality of the subsequent finished graphite heat dissipation film. However, due to the rough surface of the graphite heat dissipation film, it is easy to drop particles and absorb the pressure roller On the other hand, the smoothness and cleanliness of the surface of the pressing roller is not enough, which will affect the subsequent calendering products. Although the surface of the PET release film is relatively smooth, it can only protect one side of the graphite heat dissipation film during the calendering process and will not affect the pressing roller. The heat dissipation film and the PET release film may have relative friction before they are combined, which further increases the possibility of falling particles from the graphite heat dissipation film. Without the protection of the PET release film, the surface of the side pressure roller is more likely to absorb particles, which will affect the follow-up. Product quality; during the calendering process, due to the different types of backing paper films and graphite heat dissipation films, the distance between the required rollers is different. Therefore, it is necessary to design a method that can effectively ensure the calendering process. The roller surface is smooth and the automatic calendering device for adjusting the gap between the rollers is easy. The automatic calendering device for the graphite heat dissipation film

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