Quick color changing and spraying device and method

Abstract

The invention discloses a quick color changing and spraying device and method. The quick color changing and spraying device comprises a spray head, a connecting pipeline, color changing equipment and multiple feeding pipelines, wherein one end of the color changing equipment is connected with the feeding pipelines containing coatings of different colors, and the other end of the color changing equipment is connected with the connecting pipeline to switch the communication modes of the feeding pipelines and the connecting pipelines and feed the coating of which the color is changed to the connecting pipeline; one end of the connecting pipeline is connected with the color changing equipment, and the other end of the connecting pipeline is connected with the spray head to deliver the received coating to the spray head; the spray head conducts spraying operation through the coating delivered by the connecting pipeline. According to the quick color changing and spraying device, quick automatic color changing and high-pressure airless spraying can be achieved in a high-pressure state, the color changing pipeline does not need to be cleaned, the colors are not mixed, the coatings and cleaning solvents are saved, the quality is guaranteed, the efficiency is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of painting, in particular to a rapid color-changing spraying device and method. Background technique [0002] The color-changing technology of the existing domestic coating equipment is mainly realized by using the color-changing valve. The multi-channel paint is transported to the color-changing valve through the power equipment for color-changing, and then sent to the spray gun by the long-distance color-changing pipeline for spraying. The long-distance color change pipeline must be cleaned during the first color change. This technique has the following disadvantages: [0003] 1. Due to the long pipeline distance between the color change valve and the spray gun, the paint of the previous color in the pipeline must be cleaned before each color change, so the color change time is relatively long, usually 120s , including 60s for cleaning and 60s for new paint after cleaning; [0004] 2. There is a dead angle in th...

AI Technical Summary

Problems solved by technology

[0004] 2. There is a dead angle in the joint between the color change valve and the spray gun, so there is a phenomenon that the cleaning is not clean;

[0005] 3. The conventional color change system only returns material on the color change valve, but there is no return material at the back end of the spray gun, and there is a hidden danger of paint precipitation when the spraying is temporarily stopped;

[0006] 4. Because there is no return material at the back end of the spray gun, the cleaning solvent needs to be sprayed directly from the spray gun to complete the cleaning, which will cause waste of cleaning solvent and paint and environmental pollution

Images