Coating method and system for forming protective layer

Abstract

A coating system for forming a protective layer, comprising: first to fourth robots (16a-16d), which are controlled by a controller (18) and arranged close to a conveying line (12); and an injector mechanism (42 ), which are provided on the ends of the arms (40) of the first to fourth robots (16a-16d). The actions of the first to fourth robots (16a-16d) are taught. A liquid material comprising an acrylic copolymer is sprayed onto an object such as a vehicle body (14) and dried to form a peelable protective layer on said object. A liquid material is sprayed from first to fifth injectors (44a-44e) of the injector mechanism (42) after the vehicle body (14) is painted. At this point, the liquid material from the first injector (44a) is locally distributed in the smallest area. The area where the liquid material is sprayed becomes gradually wider in the order of the third injector (44c), the fourth injector (44d), the fifth injector (44e) and the second injector (44b). These injectors (44a-44e) are also located in this order from the edge of the body (14).

Description

technical field [0001] The present invention relates to a coating method and a coating system for applying a liquid material on an object to form a protective layer on the object, and more particularly to such a coating method and coating system for applying a liquid material to a painted area of ​​a vehicle body on, thereby forming a peelable protective layer on the vehicle body after the liquid material dries. Background technique [0002] Vehicles (eg, automobiles) are typically stored in outdoor parking lots after manufacture, and transported by trailers, ships, etc., before delivery to users. During this long period of storage and transport, the quality of the surface layer of the multi-layer paint layer on the exterior of the vehicle can be damaged due to dust, metal powder, salt, oil, acids, direct exposure to sunlight, and the like. [0003] In order to prevent the deterioration of the quality of the surface layer, a method has been disclosed in Japanese Laid-Open P...

AI Technical Summary

Problems solved by technology

However, if the distribution width of the protective layer forming material is large when sprayed (if the protective layer forming material is widely sprayed in a wide area), it may occur that small islands of the protective layer forming material are generated in the dispersion. )The problem

On the other hand, if the distribution width is reduced in order to avoid such dispersion (if the protective layer forming material is sprayed locally in a small area), there is a problem that the protective layer forming material cannot be effectively applied to the vehicle body.

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