Ransburg Industrial Finishing K.k.

Toyota Jidosha Kabushiki Kaisha

Carlisle Fluid Technologies, Inc.

Masatoshi Iwase

Kenji Okamoto

Naoki Ota

Michio Mitsui

Hisanori Nakamura

Masahito Sakakibara

Youichi Hanai

Hideki Saitou

A charge remaining in an electrostatic coater when power supply to the electrostatic coater is stopped is neutralized at an early stage. A rotary atomizing headreceives a high voltage of negative polarity from a cascade. An electrostatic coaterfurther includes a second high-voltage generatorthat generates a high voltage of positive polarity. The second high-voltage generatoris composed of a Cockcroft-Walton circuit. The Cockcroft-Walton circuit is composed of diodes and capacitors. A high voltage of the electrostatic coateris controlled by a controller. Immediately after running of the electrostatic coateris stopped by stopping power supply to the cascade, power is supplied to the second high-voltage generator. The high voltage of positive polarity generated by the second high-voltage generatoris supplied to the rotary atomizing headfor a predetermined time period.

Electrostatic coater and electrostatic coating method

The stain preventing cover is formed from a composite sheethaving a three layer structure as a raw material which is produced by laminating a first sheet materialhaving a low dielectric constant and having insulation performance, a second sheet materialhaving a dielectric constant higher than that of the first sheet materialor having semiconductivity and a third sheet materialhaving a dielectric constant lower than that of the second sheet materialand having insulation performance, in which an end of the second sheet materialis positioned together with an end of the first and third sheet materialsandadjacent to a electrostatic high voltage partof a coating machine and another end thereof is positioned distant from an earth partof the coating machine to be electrically insulated. The influence of the disturbance of the electric potential distribution on the surface of a coating machine main bodyis alleviated by the first and second sheet materialsandto cause the electric potential distribution on the surface of the third sheet materialto be homogeneous to thereby preventing the attaching of atomized coating particles to the surface.

Stain preventing cover for coating machine

Growing community of inventors

Yokohama, Japan

Masatoshi Iwase