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US 10,207,281 B2Granted
Electrostatic painting method and electrostatic painting apparatus
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsIsamu Yamasaki, Kengo Honma, Nobuo Kodaka
Life of this patent
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Abstract
An electrostatic painting method includes supplying, via a pure water supply passage, pure water to a paint tank within which paint is stored, applying a voltage to paint that is pushed out from the paint tank by the supplied pure water, and spraying the paint to which the voltage has been applied, at an object to be painted. Pure water remaining in the pure water supply passage is replaced to increase an electrical resistance value of the pure water before starting to paint the object to be painted.
Claims10
An electrostatic painting method comprising:
- supplying, via a water supply passage, water to a paint tank within which paint is stored;
- applying a voltage to paint that is pushed out from the paint tank by the supplied water;
- and
- spraying the paint to which the voltage has been applied, at an object to be painted, wherein
- before starting to paint the object to be painted, water remaining in the water supply passage is replaced such that the water in the water supply passage has an increased electrical resistance value compared to the water in the water supply passage prior to the replacement,
- the water remaining in the water supply passage is circulated to a water supply device that supplies the water, or the water remaining in the water supply passage is discharged outside, before starting to paint the object to be painted,
- the electrostatic painting method further comprises detecting the electrical resistance value of the water in the water supply passage, and
- when the detected electrical resistance value of the water in the water supply passage becomes a predetermined value, circulation of the water remaining in the water supply passage to the water supply device, or discharge of the water remaining in the water supply passage, is stopped.
5 more elements
An electrostatic painting method comprising:
- supplying, via a water supply passage, water to a paint tank within which paint is stored;
- applying a voltage to paint that is pushed out from the paint tank by the supplied water;
- and
- spraying the paint to which the voltage has been applied, at an object to be painted, wherein
- before starting to paint the object to be painted, water remaining in the water supply passage is replaced such that the water in the water supply passage has an increased electrical resistance value compared to the water in the water supply passage prior to the replacement,
- the water remaining in the water supply passage is circulated to a water supply device that supplies the water, or the water remaining in the water supply passage is discharged outside, before starting to paint the object to be painted,
- the electrostatic painting method further comprises detecting a leakage current value that leaks from the water in the water supply passage, and
- when the detected leakage current value of the water in the water supply passage becomes a predetermined value, circulation of the water remaining in the water supply passage to the water supply device, or discharge of the water remaining in the water supply passage, is stopped.
5 more elements
Dependencies are inferred from the claim text.