Coating machine head used for coating compound machine and with variable gap

Abstract

The invention discloses a variable gap coating head for a coating compound machine, which comprises a coating frame and a coating cylinder, the coating cylinder is fixed on a base close to the coating roller, the The base is slidingly set above the coating frame, and the left end of the coating frame is equipped with an adjustment motor, which is driven and connected to the base through a screw drive mechanism, and the bottom right side of the coating cylinder is passed through a tube The body support is provided with a coating pipe body extending along the length direction of the coating roller, and a distance sensor facing the substrate on the coating roller is installed on the pipe body support; A plurality of liquid outlet holes are arranged in distribution, and the coating pipe body communicates with the bottom of the coating cylinder body through a hose, and a support platform is fixed on the base. The temperature of the system drops rapidly, the coating is evenly applied, and the quality of the finished product is good.

Description

technical field [0001] The invention relates to the technical field of coating, in particular to a variable gap coating head for a coating compound machine. Background technique [0002] In recent years, a large number of superhydrophobic polypropylene (PP) films with different microstructures have been prepared using the polymer / (solvent-non-solvent) phase separation process. Due to the non-isothermal crystallization characteristics of polypropylene, the solution is required to be coated in a hot-melt state. At present, the casting method, dip coating method, or fixed coating device is basically used, and the substrate to be coated is preheated (flexible substrate, plate substrate) material), through the process of shearing, cooling, phase separation and / or crystallization and solidification, and finally drying to form a film. When the air-flow conveying spraying method is used, due to the rapid volatilization of the solvent during the spraying process by the compressed ai...

AI Technical Summary

Problems solved by technology

When the air-flow conveying spraying method is used, due to the rapid volatilization of the solvent during the spraying process by the compressed air, it is easy to cause the temperature of the solution system to drop, which is not conducive to the uniform film formation of the solution system and easily causes pollution to the environment; when the roller coating method is used for coating , during the roller coating process, the contact area between the solution system and the environment is large and the heat dissipation is fast, and the temperature of the solution system is also lowered, which is not conducive to uniform film formation; When resetting, the "coating gap" changes greatly, and the accuracy is difficult to guarantee, which makes the thickness of the coating on the substrate uneven, which seriously affects the quality of the finished product

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