Anti-condensation system for winding type vacuum coating machine

Abstract

The invention discloses an anti-condensation system for a winding type vacuum coating machine. The anti-condensation system is applied to the winding type vacuum coating machine for manufacturing new energy power batteries. The anti-condensation system mainly comprises a banister brush, a capillary tube group, a water storage tank and a gas-liquid separation channel; the banister brush has high hydrophilicity and can continuously absorb tiny water drops from the surface of a main roller, and the root of the banister brush is connected with the capillary tube group; the capillary tube group is composed of more than two capillary tubes, the other end of the capillary tube group is connected with the gas-liquid separation channel, the inner diameter of a pipeline of the gas-liquid separation channel is suddenly increased from the inner diameter of the capillary tubes, the water storage tank is arranged at the tail end of the gas-liquid separation channel, and the capillary tube group continuously conveys water absorbed by the banister brush to the gas-liquid separation channel through the capillary action; and water vapor is subjected to gas-liquid separation in the gas-liquid separation channel, and water is collected into the water storage tank. When the anti-condensation system is used for carrying out evaporation coating on a base film, water vapor removal treatment is continuously carried out on the surface of the main roller in a physical manner.

Description

technical field [0001] The invention belongs to the advanced manufacturing technology field of new energy power batteries, and in particular relates to an anti-condensation system applied to a winding vacuum coating machine used in the manufacture of new energy power batteries. Background technique [0002] With the development of optical thin film technology and semiconductor technology, the application of vacuum coating technology in production is becoming more and more extensive and important, and vacuum evaporation coating is the earliest, most common and most widely used vacuum coating process. There are many types and types of vacuum evaporation coating machines. Among them, the intermittent vacuum evaporation coating machine has the longest history. However, due to its shortcomings such as inability to perform continuous coating, small coating area, and low production efficiency, it is difficult to meet the requirements of large-area flexible film coating. Compared wi...

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Problems solved by technology

Most of the general winding vacuum evaporation coating machines use water-cooled main rolls to cool the flexible base film in the evaporation coating. Since there is a temperature difference between the side of the evaporation device and the side facing away from the evaporation device, the side facing away from the evaporation device The surface of the main roll on one side is very easy to condense to form small droplets. If the droplets accumulate for a long time, it will cause slippage between the base film and the main roll. If it is light, it will damage the quality of the base film, and if it is serious, it will cause mechanical failure and processing interruption.

At present, a small number of equipment in the existing technology suppresses the condensation of water vapor on the surface of the roll body by adding a special oxide coating on the surface of the cooling roll, but this method has certain defects: the coating machine often needs to last for a long time during the processing and production process. When the processing time is too long, the protective effect of the oxide layer protective film will be saturated, and the condensation of water vapor on the surface of the cooling roller body cannot be continuously and effectively suppressed or removed.

In addition, the protective film of the special oxide layer will wear out with use, and the satisfactory effect will not be achieved after a long time, and the technical problem of water vapor condensation cannot be completely solved.

[0004] Especially in a double-sided multi-station winding vacuum coating machine used in the manufacture of new energy power batteries involved in the present invention, it is necessary to prepare a multilayer film by evaporation coating on an ultra-thin flexible base film with a thickness less than 20 microns The conventional water-cooled main roll cannot provide a satisfactory cooling effect, which may easily lead to serious thermal deformation of the ultra-thin film, and even cause the base film of the film to break due to excessive deformation, seriously affecting production efficiency and product quality

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