Treatment system and method for treating workpieces

Patent metadata

Field	Value
Publication number	US-2025043457-A1
Application number	US-202218720406-A
Country	US
Kind code	A1
Filing date	Dec 13, 2022
Priority date	Dec 21, 2021
Publication date	Feb 6, 2025
Grant date	—

Abstract

In order to provide a treatment system which has a simple design and can be easily expanded and efficiently operated, the treatment system according to the invention comprises a plurality of fluid tanks, a conveying system, and a fluid connecting device for establishing a fluid connection between a plurality of fluid tanks.

First claim

1 . Treatment system for treating workpieces optionally for treating vehicle bodies, the treatment system comprising:
a plurality of fluid tanks which are fillable or filled with a treatment fluid and into which the workpieces can be introduced for carrying out a treatment process; a conveying system for supplying the workpieces to the fluid tanks and/or for removing the workpieces from the fluid tanks; and a fluid connection device for establishing a fluid connection between a plurality of the fluid tanks.

2 . Treatment system according to claim 1 , wherein a plurality of the fluid tanks is contained in self-contained individual containers for receiving the treatment fluid and in each case a single workpiece.

3 . Treatment system according to claim 1 , wherein a plurality of the fluid tanks is adjacent portions of a single container for receiving the treatment fluid, such that a single workpiece is to be received in each of the fluid tanks.

4 . Treatment system according to claim 1 , wherein the fluid connection device includes one or more overflow units which are connected to a plurality of the fluid tanks in each case and serve to receive treatment fluid which overflows from this fluid tank.

5 . Treatment system according to claim 1 , wherein the fluid connection device includes one or more flow devices optionally one or more pump devices and/or one or more nozzle devices, by which a treatment fluid can be supplied from one of the fluid tanks to another of the fluid tanks.

6 . Treatment system according to claim 1 , wherein the fluid tanks each include one or more mixing devices for mixing treatment fluid already present therein with supplied treatment fluid.

7 . Treatment system according to claim 6 , wherein one or more of the mixing devices each include one or more nozzle devices.

8 . Treatment system according to claim 1 , wherein the fluid connection device includes one or more pipe elements for establishing a fluid connection between two or more of the fluid tanks.

9 . Treatment system according to claim 1 , wherein a plurality of the fluid tanks adjoin one another directly, and in that side walls, facing one another, of the fluid tanks are formed by a common container wall or a common partition wall.

10 . Treatment system according to claim 9 , wherein the container wall or the partition wall includes one or more passage openings, so that a fluid connection is formed between the fluid tanks.

11 . Treatment system according to claim 9 , wherein the container wall or the partition wall is designed to be movable, optionally, liftable and/or lowerable—at least in portions.

12 . Treatment system according to claim 1 , wherein electrodes for generating an electrical field are arranged in two or more than two fluid tanks connected to one another by the fluid connection device, the electrical fields generated in the fluid tanks being decoupled from one another and/or shielded from one another.

13 . Treatment system according to claim 1 , wherein a common container wall of two containers which each form a fluid tank and/or treatment regions of a container which form a partition wall between two fluid tanks is to be electromagnetically shielding.

14 . Treatment system according to claim 1 , wherein a partition wall of the treatment system, the partition wall separating two treatment regions of a container, the two treatment regions forming two fluid tanks from one another
a) is designed as a grid or mesh; and/or b) includes an additional support structure; and/or c) receives one or more electrodes.

15 . Treatment system according to claim 1 , wherein a plurality of the fluid tanks is arranged next to one another in a horizontal direction, and/or wherein a plurality of the fluid tanks are arranged one above the other in a vertical direction.

16 . Treatment system according to claim 1 , wherein a plurality of fluid tanks are arranged offset relative to one another in the vertical direction, and wherein, by the fluid connection device, a fluid connection can be produced between these fluid tanks in such a way that treatment fluid of a fluid tank which is higher in a vertical direction flows automatically into a fluid tank which is lower in the vertical direction.

17 . Treatment system according to claim 16 , wherein the treatment system includes a preparation device for preparing the treatment fluid which is arranged in particular in a return path of the fluid connection device, the return path connecting the fluid tank which is lower in the vertical direction to the fluid tank which is higher in the vertical direction and serving to return the treatment fluid from the fluid tank which is lower in the vertical direction into the fluid tank which is higher in the vertical direction.

18 . Treatment system according to claim 16 , wherein the treatment system includes a sensor device by which a filling height of the fluid tank which is lower in the vertical direction can be determined and by which, when a predetermined maximum filling height is exceeded, a further supply of treatment fluid into this fluid tank can be stopped.

19 . Treatment system according to claim 1 , wherein the fluid tanks are exclusively dip tanks which are accessible from above, and/or wherein the treatment system is a dip coating system—optionally, a system for cathodic dip coating.

20 . Method for treating workpieces—optionally vehicle bodies, the method comprising:
supplying treatment fluid to a plurality of fluid tanks of a treatment system, in particular, a treatment system according to claim 1 —wherein the treatment fluid is fed successively to the plurality of fluid tanks and/or is circulated between the plurality of fluid tanks.

Assignees

• Duerr Systems Ag

Inventors

• Jäger Tobias
• Wieland Dietmar
• Downar Marek
• Seyboth Oliver
• Lauer Michael

Classifications

• B05B13/0221

  characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts (B05B13/0207 takes precedence; conveyors in general B65G) · CPC title

• B65G49/04

  the workpieces being immersed and withdrawn by movement in a vertical direction · CPC title

• B05C11/1039

  Recovery of excess liquid or other fluent material; Controlling means therefor · CPC title

• B05C3/10

  the articles being moved through the liquid or other fluent material (conveying articles through baths B65G, e.g. B65G49/02) · CPC title

• C25D13/12 Primary

  characterised by the article coated · CPC title