US 11,865,558 B2
Nozzle for a spray gun, nozzle set for a spray gun, spray guns and methods for producing a nozzle for a spray gun
Eva Volk, Ludwigsburg (DE); Dietrich Wolter, Bietigheim-Bissingen (DE); Stefan Gehret, Tuebingen (DE); Michael Pantle, Gemmrigheim (DE); and Norbert Maier, Allmersbach i.T. (DE)
Assigned to SATA GmbH & Co. KG, Kornwestheim (DE)
Filed by SATA GmbH & Co. KG, Kornwestheim (DE)
Filed on Jul. 29, 2019, as Appl. No. 16/524,838.
Claims priority of application No. 10 2018 118 737.8 (DE), filed on Aug. 1, 2018.
Prior Publication US 2020/0038889 A1, Feb. 6, 2020
Int. Cl. B05B 1/34 (2006.01); B05B 11/06 (2006.01); B05B 11/00 (2023.01); B05B 7/08 (2006.01)
CPC B05B 1/34 (2013.01) [B05B 7/08 (2013.01); B05B 11/0005 (2013.01); B05B 11/06 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A spray gun including:
a main body; and
a nozzle set including:
a nozzle, the nozzle comprising a material nozzle having a hollow portion for the passage of material to be sprayed and a material outlet opening in a front end region of the material nozzle; and
an air cap with a central opening and at least one diametrically opposite horn-air bore, the air cap being separate from the nozzle,
wherein the material nozzle includes:
a disk element extending radially from the material nozzle and having a plurality of passage openings for the passage of air; and
a first baffle disk which is arranged on the disk element and has an inner and an outer circumference,
wherein the first baffle disk is arranged on the disk element directly, without a sealing element arranged inbetween,
wherein the first baffle disk has a greater outer circumference than the disk element,
wherein the first baffle disk is configured from continuous material in a region between the inner circumference and the outer circumference without any passage openings between the inner circumference and the outer circumference, such that air that impinges on the region between the inner circumference and the outer circumference of the first baffle disk cannot penetrate or flow through the first baffle disk,
wherein the disk element is located in a middle area between the front end region of the material nozzle and a rear end region of the material nozzle, which faces away from the material outlet opening,
wherein the disk element and the first baffle disk are not part of the air cap,
wherein the main body includes at least one radially outer air outlet opening, at least one radially inner air outlet opening, and a middle wall lying inbetween,
wherein the spray gun includes at least one first air flow path which runs from the at least one radially inner air outlet opening, past the inner circumference of the first baffle disk, through the plurality of passage openings of the disk element, into an air cap chamber formed by the air cap and the nozzle, and through a gap which is formed by the front end region of the material nozzle and the central opening in the air cap, and
wherein the spray gun further includes at least one second air flow path which is separated from the first air flow path and which runs from the at least one radially outer air outlet opening, past the outer circumference of the first baffle disk, past an outer circumference of the disk element, into at least one horn-air supply duct in the air cap and through the at least one horn-air bore.