Coating booth for coating vehicle rims

Patent metadata

Field	Value
Publication number	US-12569872-B2
Application number	US-202117995924-A
Country	US
Kind code	B2
Filing date	Apr 6, 2021
Priority date	Apr 8, 2020
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

A coating cabin for coating vehicle wheel rims has a coating chamber and a conveying device for transporting the workpieces for coating through the coating chamber. An applicator system is furthermore provided for spraying coating material as required in the coating chamber, wherein the applicator system has a first pistol system for spraying coating material as required onto a first region of the workpieces for coating, a second pistol system for spraying coating material as required onto a second region of the workpieces for coating, and a third pistol system for spraying coating material as required onto a third region of the workpieces for coating.

First claim

The invention claimed is:

1 . A coating booth for coating vehicle rims or other rotationally symmetric workpieces with coating material, wherein the coating booth comprises:
a coating chamber having a booth floor, two oppositely positioned side walls, each having a workpiece passageway, two side walls oppositely positioned and adjoining the side walls with the workpiece passageways and a booth roof positioned opposite from the booth floor; a conveyor device for transporting the workpieces to be coated through the coating chamber, wherein the conveyor device is arranged beneath the booth floor and has a workpiece carrier which extends into the coating chamber of the coating booth through a conveyance slot in the booth floor; and an applicator system for spraying coating material within the coating booth as needed, wherein the applicator system comprises a first gun system for spraying coating material as needed onto a first area of the workpieces to be coated, a second gun system for spraying coating material as needed onto a second area of the workpieces to be coated, and a third gun system for spraying coating material as needed onto a third area of the workpieces to be coated, wherein the first gun system is assigned a first axis system for the positioning and/or aligning of the first gun system relative to the workpieces to be coated during a coating procedure, wherein the second gun system is assigned a second axis system for the positioning and/or aligning of the second gun system relative to the workpieces to be coated during a coating procedure, and wherein the third gun system is assigned a third axis system for the positioning and/or aligning of the third gun system relative to the workpieces to be coated during a coating procedure, wherein the first, second and third axis system are configured such that only the first gun system moves asynchronously to the traveling conveyor device whereas the second and third gun system move synchronously with the conveyor movement.

2 . The coating booth according to claim 1 ,
wherein the first gun system is designed to spray coating material as needed onto a visible area of the workpieces to be coated, wherein the second gun system is designed to spray coating material as needed onto a side region of the workpieces to be coated adjacent to the visible area, and wherein the third gun system is designed to spray coating material as needed onto a rear area of the workpieces to be coated opposite from the visible area.

3 . The coating booth according to claim 1 ,
wherein the first, second and third axis system are each designed as a system which travels along with the workpieces to be coated as the workpieces to be coated are transported through the coating chamber, wherein each axis system is movable relative to the coating chamber along the side walls adjoining the side walls with the workpiece passageways, wherein the axis systems are designed so as to move synchronously with a conveying speed of the conveying device.

4 . The coating booth according to claim 1 ,
wherein the second and third axis system are each connected to the respectively assigned gun system via an opening formed in a side wall adjacent to the side walls with the workpiece passageways, and wherein the second and third axis system are connected to the respectively assigned gun system via the same opening in a side wall adjoining the side walls with the workpiece passageways.

5 . The coating booth according to claim 1 ,
wherein the second and third axis system have a common transport device for jointly moving the second and third gun system relative to the coating chamber and synchronously with the workpieces to be coated transported through the coating chamber via the conveyor device.

6 . The coating booth according to claim 5 ,
wherein the first axis system has a transport device independent of the second and third axis system which is designed to move the first gun system relative to the coating chamber and in particular asynchronously to the workpieces to be coated transported through the coating chamber via the conveyor device and independently of the common transport device of the second and third axis system.

7 . The coating booth according to claim 1 ,
wherein the first axis system is assigned a robotic arm system able to be moved together with the first gun system over the conveyor device and over the workpieces to be coated relative to the coating chamber and relative to the workpieces to be coated with the aid of robotic guidance.

8 . The coating booth according to claim 1 ,
wherein the second and third axis system are each assigned a linear positioning system for independent positioning and/or aligning of the second and third gun system relative to the workpieces to be coated.

9 . The coating booth according to claim 1 ,
wherein the first gun system comprises at least one first coating gun and at least one further second coating gun, and wherein the first axis system is assigned a control device designed to control the first axis system such that the at least one first coating gun and the at least one further second coating gun each have a predefined and/or definable position and/or alignment relative to the workpieces to be coated, wherein the predefined and/or definable position and/or alignment depends on the type and/or size of the workpieces to be coated.

10 . The coating booth according to claim 1 ,
wherein the first gun system comprises at least one first coating gun and at least one further second coating gun, wherein the at least one first coating gun is movable and/or alignable relative to the workpieces to be coated independently of the at least one further second coating gun.

11 . The coating booth according to claim 10 ,
wherein the first gun system comprises at least two further coating guns, wherein the at least two further coating guns are movable and/or alignable relative to the workpieces to be coated independently of each other.

12 . The coating booth according to claim 1 ,
wherein the second gun system comprises at least one first coating gun and at least one further second coating gun, wherein the at least one first coating gun is movable and/or alignable relative to the workpieces to be coated independently of the at least one further second coating gun; and/or wherein the third gun system comprises at least one first coating gun and at least one further second coating gun, wherein the at least one first coating gun is movable and/or alignable relative to the workpieces to be coated independently of the at least one further second coating gun.

13 . The coating booth according to claim 1 ,
wherein the coating gun is an electrostatic coating gun designed to electro-statically charge the coating material to be sprayed with the coating gun, wherein the coating gun is assigned a control device for the controlling and/or regulating of currents in the coating material charging process.

14 . The coating booth according to claim 1 ,
wherein at least sections of the booth floor surrounding the conveyance slot are of ramped design, wherein at least one air blowing device is provided for pulsed blowing of a flow of air along the ramped section of the booth floor toward at least one extraction duct provided in the booth floor.

15 . The coating booth according to claim 14 ,
wherein the at least one air blowing device is provided at the conveyance slot, and wherein at least one further air blowing device is provided on or in at least one side wall of the coating booth adjoining the side walls with the workpiece passageways which is des

Assignees

• Gema Switzerland Gmbh

Inventors

• Steiger Peter
• Dos Reis Paulo

Classifications

• B05B13/0235

  the movement of the objects being a combination of rotation and linear displacement (B05B13/0242 takes precedence) · CPC title

• B05B12/18 Primary

  using fluids, e.g. gas streams · CPC title

• B05B16/90

  comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth · CPC title

• B05B15/70

  Arrangements for moving spray heads automatically to or from the working position · CPC title

• B05B16/40

  Construction elements specially adapted therefor, e.g. floors, walls or ceilings (ceiling elements filtering inflow of air into the booth B05B16/60; walls specially adapted for promoting separation of excess material B05B14/44) · CPC title