Vehicle powder coating system
AssigneeNordson Corporation
InventorJeffrey R. Shutic
Life of this patent
Estimating the term…
Abstract
An apparatus for applying powder coating material onto large objects such as automotive, truck or other vehicle bodies includes a powder spray booth defining a controlled area within which to apply powder coating material onto the vehicle bodies, a powder kitchen located at a remote position from the powder spray booth, and, a number of feed hoppers located proximate the booth which receive powder coating material from the powder kitchen and supply it to automatically or manually manipulated powder spray guns associated with the booth. Oversprayed powder coating material is removed from the booth interior by a powder collection and recovery system which transmits the oversprayed powder back to the powder kitchen for recirculation to the powder spray guns.
Claims24
Apparatus for supplying powder coating material, comprising:
- a source of virgin powder coating material, a primary hopper and a feed hopper;
- a first transfer device, connected between said source and said primary hopper, which transmits powder coating material under the application of negative pressure from said source to said primary hopper;
- a second transfer device, connected between said primary hopper and said feed hopper, which transmits powder coating material under the application of negative pressure from said primary hopper to said feed hopper, said feed hopper being adapted to connect to coating dispensers which apply powder coating material onto objects passing through a powder spray booth:
- each of said first and second transfer devices including:
- (i) a powder receiver unit having a powder collection chamber;
- (ii) a clean air chamber separated from said powder collection chamber;
- (iii) at least one cartridge filter located within said powder collection chamber and in communication with said clean air chamber;
- and
- (iv) a device for dislodging powder coating material collected on said cartridge filter.
Apparatus for supplying powder coating material to at least one coating dispenser for deposition onto objects transmitted through a powder spray booth within which a portion of the powder coating material fails to adhere to the objects and forms oversprayed powder coating material, comprising:
- a powder kitchen which houses at least one primary hopper containing virgin powder coating material, and at least one secondary hopper;
- a first feed hopper adapted to be located proximate to the powder spray booth, said first feed hopper being adapted to supply powder coating material to powder spray guns associated with the powder spray booth;
- a transfer device, operating under the application of negative pressure, which transfers oversprayed powder coating material from the powder spray booth to one of said primary hopper and said at least one secondary hopper, and which transfers powder coating material from one of said primary hopper and said at least one secondary hopper to said first feed hopper.
Apparatus for supplying powder coating material to at least one dispenser for deposition onto objects transmitted through a powder spray booth, comprising:
- a primary hopper for receiving powder coating material,
- a first transfer device, connected to said primary hopper, which transmits powder coating material to said primary hopper;
- a first sensor which is effective to sense the quantity of powder coating material within said primary hopper, and to cause said first transfer device to transmit powder coating material into said primary hopper when said quantity of powder coating material falls below a predetermined amount;
- a feed hopper;
- a second transfer device, connected between said primary hopper and said feed hopper, which transmits powder coating material under the application of negative pressure from said primary hopper to said feed hopper;
- and
- a second sensor which is effective to sense the quantity of powder coating material within said feed hopper, and to operate said second transfer device when said quantity of powder coating material falls below a predetermined amount.
Dependencies are inferred from the claim text.