Integrated charge ring
First Claim
Patent Images
1. An atomizer for the electrostatic series coating of workpieces, comprising:
- an outer housing formed of an insulating material including a longitudinal axis, an end portion and an axial tube extending through said end portion receiving conductive coating material;
a cone-shaped spray head rotatably supported by said housing in said longitudinal axis opposite said tube;
a ring part formed of an insulating material surrounding said housing in engagement with said housing preventing overspray of coating material from being received between said ring part and said housing having a generally radial end portion spaced rearwardly from said end portion of said housing; and
an electrode arrangement embedded in said ring part conneted to a high voltage supply having an end extending through said generally radial end of said ring part concentric with said spray head and spaced rearwardly from said end portion of said housing and said spray head externally charging conductive coating sprayed by said spay head through ionization of air surrounding said spray heed.
2 Assignments
0 Petitions
Accused Products
Abstract
For improving external charging in electrostatic atomizers for conductive coating material and for reducing the structural size of the atomizer, particularly for robot applications, the charging electrodes are embedded in a ring part made of insulating material, which is set directly on the outside of the outer housing or forms a part of the outer housing.
-
Citations
13 Claims
-
1. An atomizer for the electrostatic series coating of workpieces, comprising:
-
an outer housing formed of an insulating material including a longitudinal axis, an end portion and an axial tube extending through said end portion receiving conductive coating material;
a cone-shaped spray head rotatably supported by said housing in said longitudinal axis opposite said tube;
a ring part formed of an insulating material surrounding said housing in engagement with said housing preventing overspray of coating material from being received between said ring part and said housing having a generally radial end portion spaced rearwardly from said end portion of said housing; and
an electrode arrangement embedded in said ring part conneted to a high voltage supply having an end extending through said generally radial end of said ring part concentric with said spray head and spaced rearwardly from said end portion of said housing and said spray head externally charging conductive coating sprayed by said spay head through ionization of air surrounding said spray heed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An atomizer for the electrostatic series coating of workpieces, comprising:
-
an outer housing formed of an insulating material including a longitudinal axis, an end portion and an axial tube extending through said end portion receiving conductive coating material;
a cone-shaped spray head rotatably supported by said housing in said longitudinal axis opposite said spray head;
a ring part formed of an insulating material surrounding said housing in engagement with said housing preventing overspray of coating material from being received between said ring part and said housing having a generally radial end portion spaced rearwardly from said end portion of said housing; and
a plurality of equally circumferentially spaced needle-shaped electrodes embedded in said ring part each having a tip portion extending through said generally radial end portion of said ring part concentric with said spray head and spaced rearwardly from said end portion of said housing and said spray head connected to a high voltage supply externally charging coating materials sprayed by said spray head by ionization of air surrounding said housing. - View Dependent Claims (9, 10, 11, 12, 13)
-
Specification