ROTARY ATOMIZING HEAD FOR ELECTROSTATIC COATING MACHINE

WIPO Patent Application WO/2018/163343

A1

Provided is a rotary atomizing head for an electrostatic coating machine capable of improving the coating efficiency of a coating material by increasing the amount of charge of the coating material emitted. In an edge region (26) of a rotary atomizing head (14) for an electrostatic coating machine positioned on an outer periphery (21b) of a front surface (21), coating guide grooves (31) are disposed radially and adjacent to each other across the entire circumference. Thus, coating material P1 supplied from a coating discharge hole opened on the front surface (21) side is charged as the material passes through the coating guide grooves (31) and is emitted in a liquid thread form. Furthermore, the coating guide grooves (31) each have a groove end part (33) that is formed into a sharpened shape which has a narrower width nearer to the end edge of the edge region (26). The end edge of the edge region (26) is formed in a serrated shape having teeth (40). The tops E1 of the teeth (40) are disposed in accordance with the position of the groove end parts (33) of the coating guide grooves (31).

ISHIKAWA KATSUHIRO (JP)
TAKEUCHI SHOBU (JP)

PCT/JP2017/009407

September 13, 2018

March 09, 2017

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TRINITY IND CORP (JP)

B05B5/04; B05B3/10

JPS6115052U	1986-01-28
JPS6115758A	1986-01-23
JPS5870852A	1983-04-27
JPS63171659A	1988-07-15
JPS60251947A	1985-12-12
JPH11221498A	1999-08-17
JP2006181556A	2006-07-13

TACHI, KAZUYUKI ET AL.: "Effect of rotating cup shapes and spray conditions on paint atomization", JOURNAL OF THE JAPAN SOCIETY OF COLOUR MATERIAL, vol. 58, no. 7, 1985, pages 390 - 401, XP055605323

ATSUMI, Hisahiko (JP)

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