Rotary atomizing painting device

Abstract

The rotary atomizing painting device is provided with a bell cup (3) disposed at the most front part in the paint spray direction X and axially supported by a rotating shaft (2b) and a shaping air ring (4) disposed rearward of this bell cup (3) in the paint spray direction and in which a plurality of discharge openings (4a) is formed on the periphery centered on the rotating shaft (2b). The plurality of discharge openings (4a) is formed such that the axial direction of the plurality of discharge openings (4a) is in a direction and a slant to the rotating shaft (2b). The axial direction of the plurality of discharge openings (4a) is formed to aim at a back surface part (3b), which is a part on the back surface side of the bell cup (3) from the paint spray direction.

Description

technical field [0001] The present invention relates to a technique of a rotary atomization type coating device used in electrostatic coating. Background technique [0002] Conventionally, a so-called rotary atomization coating device is known as a coating device for electrostatically coating a body of an automobile or the like. [0003] In recent years, in the rotary atomization coating apparatus, there is a need to further shorten the coating time, but the shortening of the coating time by operating the coating robot at a higher speed is approaching the limit. Therefore, research is underway to shorten the painting time by enlarging the paint application pattern while making the operation speed of the painting robot comparable to conventional ones. If the paint application pattern can be expanded, the amount of overlap can be increased compared to the past, so the moving distance of the painting robot is shorter than before, and the coating time can be shortened. [0004...

AI Technical Summary

Problems solved by technology

[0004] However, in the conventional rotary atomization coating device, there are the following problems: if the coating pattern of the paint is given priority, it is difficult to realize the micronization of the paint;

[0009] However, the rotary atomization coating device described in Patent Document 1 is a rotary atomization coating device for metal coating. The coating pattern is expanded, but the coating pattern is still narrow compared with the rotary atomization coating equipment used in general electrostatic coating, so the shortening of the coating time cannot be fully realized

In addition, in such a rotary atomization coating device, even if the flow rate of the molding gas is further increased, the expansion of the coating pattern cannot be effectively achieved.

[0010] Therefore, can be used in general electrostatic coating and can realize the atomization of coating while the rotary atomization coating device of expanding the coating pattern of coating remains to be developed.

Images