Rotary atomizing coating device and spray head

Patent metadata

Field	Value
Publication number	US-2016339459-A1
Application number	US-201415114029-A
Country	US
Kind code	A1
Filing date	Nov 26, 2014
Priority date	Jan 29, 2014
Publication date	Nov 24, 2016
Grant date	—

Abstract

The rotary atomizing coating device ( 1 ) is provided with a spray head ( 2 ) formed of a tube body having a circular truncated conical shape and constituted to spray, from an opening end on the large diameter side, a coating introduced from an opening end on the small diameter side thereof, and a coating supply machine ( 3 ) engaged with the spray head ( 2 ) for supplying the coating while rotating the spray head ( 2 ) around an axial line (O). The spray head ( 2 ) has a first coating diffusion part ( 28 ) having a curved surface with a convex shape towards the axial line (O) on the inner peripheral surface, and a second coating diffusion part ( 29 ) extending to an outer edge ( 26 ) of the opening end on the large diameter side having a curved surface with a concave shape towards the axial line (O) with grooves ( 4 ) on the outer edge ( 26 ).

First claim

1 . A rotary atomizing coating device comprising a spray head formed of a tube body having a circular truncated conical shape and configured so as to spray, from an opening end on a large diameter side, a coating introduced from an opening end on a small diameter side thereof, and a coating supply machine engaged with the opening end on the small diameter side of the spray head for supplying the coating to inside of the spray head while rotating the spray head around an axial line of the tube body,
wherein the spray head includes a first coating diffusion part configured by a curved surface with a convex shape towards the axial line of the tube body on an inner peripheral surface, a second coating diffusion part extending from the first coating diffusion part to an outer edge of the opening end on the large diameter side of the tube body and configured by a curved surface with a concave shape towards the axial line, and a tapered part provided at the small diameter side of the tube body relative to the first coating diffusion part, and wherein the second coating diffusion part has grooves provided at the outer edge.

2 . The rotary atomizing coating device according to claim 1 , wherein an angle between the tapered part and the axial line is 45° or less.

3 . (canceled)

4 . The rotary atomizing coating device according to claim 1 , wherein a hub part is provided inside the spray head at the small diameter side, and an outer periphery of the hub part is extended along the tapered part.

5 . The rotary atomizing coating device according to claim 4 , wherein an angle between the tapered part and the axial line is 45° or less.

Assignees

• Honda Motor Co Ltd

Inventors

• Kishimoto Naoki
• Ueki Takayuki
• Ikeda Koji
• Takebe Masashi
• Fukuno Junichi

Classifications

• B05B5/0407

  with a spraying edge, e.g. like a cup or a bell · CPC title

• B05B3/1064

  the liquid or other fluent material to be sprayed being axially supplied to the rotating member through a hollow rotating shaft · CPC title

• B05B3/1042

  Means for connecting, e.g. reversibly, the rotating spray member to its driving shaft · CPC title

• B05B3/1035

  Driving means; Parts thereof, e.g. turbine, shaft, bearings · CPC title

• B05B3/1014 Primary

  with a spraying edge, e.g. like a cup or a bell · CPC title