Abstract: An electrostatic coating machine comprises a coating machine main body having a rotary atomizing head and a cleaning shroud, a plurality of color change valve mechanisms for feeding paints and cleaning fluids to the rotary atomizing head, a first change-over valve provided at a position close to the rotary atomizing head, paint feed passages respectively connected to each of the color change valve mechanisms and selectively communicating with the rotary atomizing head by way of the first change-over valve, a drain passage for recovering the drainage from the cleaning shroud and the first change-over valve, a discharging section for forcively discharging the drainage from the drain passage, and a second change-over valve provided in the midway of the drain passage communicating from the cleaning shroud to the discharging section.

Abstract: An electrostatically charged rotary paint atomizing device used in electrostatically coating an article with a smooth homogeneous film of paint and without the generation of foam or other surface irregularities on the article being coated, wherein an electrostatic field is established between the peripheral edge of the rotating atomizing device and the article to be coated and the liquid paint flows toward the edge of the atomizing device as a continuous thin film, which film is formed into a circumferential series of branch flows of narrow width flowing in the peripheral direction of the atomizing edge, and the liquid paint is atomized from the series of branch flows as they are projected beyond the edge of the atomizing device. The rotary atomizing device may be in the form of a bell or disk and includes a plurality of shallow grooves near its periphery preferably extending radially and of increasing depth in the direction of paint flow and terminating at the discharge edge.

Abstract: An electrostatic coating machine comprises a coating machine main body having a rotary atomizing head and a cleaning shroud, a plurality of color change valve mechanisms for feeding paints and cleaning fluids to the rotary atomizing head, a first change-over valve provided at a position close to the rotary atomizing head, paint feed passages respectively connected to each of the color change valve mechanisms and selectively communicating with the rotary atomizing head by way of the first change-over valve, a drain passage for recovering the drainage from the cleaning shroud and the first change-over valve, a discharging section for forcively discharging the drainage from the drain passage, and a second change-over valve provided in the midway of the drain passage communicating from the cleaning shroud to the discharging section.

Abstract: A method of atomizing liquid paint using a rotating atomizing device and electrostatically coating an article with a smooth homogeneous film of paint and without the generation of foam or other surface irregularities on the article being coated, wherein an electrostatic field is established between the peripheral edge of the rotating atomizing device and the article to be coated and the liquid paint flows toward the edge of the atomizing device as a continuous thin film, which film is formed into a circumferential series of branch flows of narrow width flowing in the peripheral direction of the atomizing edge, and the liquid paint is atomized from the series of branch flows as they are projected beyond the edge of the atomizing device. The rotary atomizing device may be in the form of a bell or disk and includes a plurality of shallow grooves near its periphery preferably extending radially and of increasing depth in the direction of paint flow and terminating at the discharge edge.

Abstract: A method of atomizing liquid paint using a rotating atomizing device and electrostatically coating an article with a smooth homogeneous film of paint and without the generation of foam or other surface irregularities on the article being coated, wherein an electrostatic field is established between the peripheral edge of the rotating atomizing device and the article to be coated and the liquid paint flows toward the edge of the atomizing device as a continuous thin film, which film is formed into a circumferential series of branch flows of narrow width flowing in the peripheral direction of the atomizing edge, and the liquid paint is atomized from the series of branch flows as they are projected beyond the edge of the atomizing device. The rotary atomizing device may be in the form of a bell or disk and includes a plurality of shallow grooves near its periphery preferably extending radially and of increasing depth in the direction of paint flow and terminating at the discharge edge.