Vertical spraying process for electrostatic spraying gun

Abstract

The invention discloses a vertical spraying process for an electrostatic spraying gun, which comprises the following steps of: loading a workpiece, spraying primer on the workpiece by using a matrix-arrayed electrostatic spraying gun set or a DISK rotating spraying disk, and leveling after the spraying is finished; spraying finish paint on the workpiece by using the matrix-arrayed electrostatic spraying gun set, and leveling after the spraying is finished; and spraying finish varnish on the workpiece by using the matrix-arrayed electrostatic spraying gun set, leveling after the spraying is finished, drying and cooling to room temperature, unloading the workpiece and packaging. The vertical spraying process has the advantages of high production efficiency, flat paint film and uniform sprayed paint without W-shaped sprayed paint; and in a process of spraying, the workpiece can not swing, a concave part of the workpiece needs not to be repaired with the paint, and a convex part of the workpiece does not sag, therefore, the production efficiency is high, and the labor cost is saved without paint repair.

Description

technical field [0001] The invention relates to a spraying process, in particular to a vertical spraying process with an electrostatic spray gun. Background technique [0002] Spraying is a coating method in which spray guns or disc atomizers are dispersed into uniform and fine droplets by means of pressure or centrifugal force and applied to the surface of the object to be coated. [0003] The current conventional spraying methods mainly include horizontal spraying method and Disk vertical spraying method (or called Ω vertical disc spraying) method, and the horizontal spraying method has the following disadvantages: 1. Low production efficiency; 2. Respraying is required , it is easy to cause "W" phenomenon in spraying, that is, uneven spraying; 3. The painting rate is low; 4. 12-13 paint repair workers are needed on a spraying production line, which increases labor costs. The spray guns are arranged in a line to spray the workpiece at the same time, which has a greater im...

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Problems solved by technology

[0003] The current conventional spraying methods mainly include horizontal spraying method and Disk vertical spraying method (or called Ω vertical disc spraying) method, and the horizontal spraying method has the following disadvantages: 1. Low production efficiency; 2. Respraying is required , it is easy to cause "W" phenomenon in spraying, that is, uneven spraying; 3. The painting rate is low; 4. 12-13 paint repair workers are needed on a spraying production line, which increases labor costs. The spray guns are arranged in a line to spray the workpiece at the same time, the impact on the workpiece is relatively large, and the workpiece is easy to swing, resulting in uneven spraying

[0004] Compared with horizontal spraying, the production efficiency of Disk vertical spraying is higher. DISK spraying uses the centrifugal force generated by the high-speed rotation of the spraying disc to throw out the atomized paint droplets, and because there is a voltage between the spraying disc and the workpiece, the throwing The small droplets of paint that go out are adsorbed on the workpiece, but its disadvantages are: 1. After spraying, it is easy to cause blackening of the metal and affect the overall appearance of the workpiece; 2. The concave part of the workpiece needs to be repaired due to insufficient spray paint. Spraying, and because the height of the automatic lift is 8.5m, the hanging workpiece is as high as 6-7 meters, it is very difficult to manually respray; Some parts will absorb more paint, which will cause the paint to hang and affect the appearance of the workpiece

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