Patent Publication Number: US-2023158537-A1

Title: Treatment station, treatment unit and method for treating workpieces

Description:
RELATED APPLICATION 
     This application is a national phase of international application no. PCT/DE2021/100554 filed on Jun. 30, 2021, and claims the benefit of German application no. 10 2020 208 248.0 filed on Jul. 1, 2020, which are incorporated herein by reference in their entirety and for all purposes. 
    
    
     FIELD OF DISCLOSURE 
     The present invention relates to the field of workpiece treatment, and in particular to cleaning and coating workpieces—for example, vehicle bodies or vehicle parts. 
     BACKGROUND 
     For the treatment of workpieces, these can be dipped into dip tanks, for example. In this case, the workpieces are lowered into a dip tank, for example, and are removed from the dip tank after a treatment step. In doing so, a rotation of the workpiece for optimal treatment of the same even at locations that are difficult to access may also be provided. 
     In such dip treatment plants, it may be disadvantageous if workpieces of different sizes and/or shapes are to be treated and/or if different treatment durations are provided for various workpieces. 
     SUMMARY OF THE INVENTION 
     The object of the present invention is therefore to provide devices and methods which allow optimized workpiece treatment by using cost-efficient components. 
     This object is achieved by the device and the method according to the independent claims. 
     The device is in particular a treatment station or a treatment plant for treating workpieces. 
     A treatment station preferably comprises a treatment container which surrounds a treatment chamber for receiving the workpieces. 
     Furthermore, it may be provided that a treatment station comprise several such treatment containers. 
     It is preferably provided that the treatment chamber be able to be flooded with a fluid. 
     The fluid is in particular a treatment fluid, e.g., a cleaning fluid—in particular, for degreasing the workpieces. Furthermore, it may be provided that the fluid be a coating fluid—for example, for phosphating or painting the workpieces. 
     It may be provided that the treatment container comprise at least one access opening for introducing the workpieces into the treatment chamber and/or for discharging the workpieces from the treatment chamber. 
     The treatment container preferably comprises a closing device for selectively closing and opening the at least one access opening. 
     It may be provided that the treatment container comprise a single access opening for introducing the workpieces into the treatment chamber and for discharging the workpieces from the treatment chamber. 
     Alternatively, it may be provided that the treatment container comprise an access opening for introducing the workpieces into the treatment chamber and a further access opening for discharging the workpieces from the treatment chamber, wherein the access openings are then arranged in particular on opposite sides or ends or front walls of the treatment container. 
     It may be advantageous if at least one access opening is arranged and/or formed in one or more side walls of the treatment container, and in particular in one or more front walls of the treatment container. 
     The treatment container is in particular substantially cuboid and preferably comprises a ceiling wall which is, for example, closed, a bottom wall, two or three closed side walls, and two further or one further side wall, which is provided with at least one access opening, wherein the at least one access opening is preferably completely closable by means of the closing device. 
     It may be favorable if the closing device serves for fluid-tight closing of the at least one access opening. 
     For this purpose, the closing device comprises in particular a closing element which, for example, is self-locking and/or is provided with a self-locking mechanism and/or with a self-locking seal. 
     Furthermore, it may be provided that, in order to ensure the sealing effect of the closing device, at least one toggle lever be or be able to be inserted—in particular, in order to press a closing element onto a sealing device. 
     It may be advantageous if the closing device comprises a lifting device for raising and lowering a closing element of the closing device, and in particular for raising the closing element in order to bring it into an open position and/or for lowering the closing element in order to bring it into a closed position. 
     Furthermore, it may be provided that, by means of the lifting device, the closing element be able to be lowered in order to bring it into an open position and/or be able to be raised in order to bring it into a closed position. 
     Such a closing element may, for example, be a gate, and in particular a lock gate. 
     The closing element may, for example, be formed in one piece and may be movable as a whole. Alternatively, it may be provided that the closing element be formed of several parts, wherein the parts of the closing element are preferably movable independently of one another or perform movements different from one another in order to close or open the access opening. 
     Alternatively or additionally, it may be provided that the closing device comprise a pushing device for, for example, lateral displacement of the closing element in order to selectively bring it into an open position or into a closed position. 
     Furthermore, it may be provided that the closing device comprise a pivoting device for pivoting a closing element of the closing device, wherein the closing element can be pivoted in particular about an at least approximately horizontal pivot axis. Alternatively, it may be provided that the closing element be able to be pivoted about an at least approximately vertical pivot axis. 
     It may be advantageous if one or more closing elements, and in particular at least one folding element, comprise or form one or more conveying elements of a conveying device, and in particular one or more guiding elements of a guiding device of a conveying device. In particular, it may be provided that one or more roller elements of a conveying device designed as a roller conveyor be arranged on one or more closing elements. 
     It may be advantageous if one or more closing elements of the closing device form part of the conveying device or carry or accommodate part of the conveying device. 
     The closing device preferably comprises a closing drive for automatically moving a closing element of the closing device—in particular, in order to automatically bring the closing element into the open position and/or into the closed position. 
     The closing drive can, for example, act electrically or pneumatically or hydraulically on the closing element in order to selectively bring it into an open position or into a closed position. In this case, one or more electric motors and/or spindle gears and/or thrust chains and/or rope winches may, for example, be provided for moving the closing element. 
     Furthermore, it may be provided that gravity be used to move the closing element, e.g., by mechanical coupling of two closing elements, wherein one closing element is lowered, and a further closing element is thereby raised, or at least its raising is thereby simplified. 
     It may be favorable if the treatment station comprises a fluid tank for accommodating a fluid, and in particular a treatment fluid. 
     For flooding the treatment chamber, the fluid can preferably be introduced from the fluid tank into the treatment chamber by means of a fluid guide. 
     For emptying the treatment chamber, the fluid can preferably be guided, by means of the fluid guide, from the treatment chamber back into the fluid tank. 
     A direct connection between the treatment chamber and the fluid tank may be provided both for flooding and for emptying. Alternatively, one or more intermediate stations or other devices to be flowed through may be provided. 
     The treatment station preferably comprises a conveying device for conveying the workpieces, and in particular for introducing the workpieces into the treatment chamber and/or for discharging the workpieces from the treatment chamber and/or for conveying the workpieces from one treatment station to the next. 
     It may be favorable if the conveying device comprises one or more roller conveyors, lifting conveyors, push conveyors, and/or storage and retrieval devices for conveying and/or moving the workpieces, and in particular for introducing the workpieces into the treatment chamber and/or for discharging the workpieces from the treatment chamber and/or for conveying the workpieces from one treatment station to the next. 
     Alternatively or additionally, it may be provided that the conveying device comprise one or more driverless transport systems for conveying and/or moving the workpieces, and in particular for introducing the workpieces into the treatment chamber and/or for discharging the workpieces from the treatment chamber and/or for conveying the workpieces from one treatment station to the next. 
     In one embodiment of the invention, it may be provided that the conveying device comprise several conveying device sections with conveyor technology different from one another with regard to a drive device and/or with regard to an accommodation and guidance of the workpieces, wherein the workpieces can preferably be conveyed by means of a first conveying device section into a region in front of a treatment container of a treatment station, and wherein the workpieces can be introduced into the treatment chamber of the treatment station by means of a second conveying device section different therefrom. 
     For example, it may be provided that one or more roller conveyors for conveying the workpieces be provided outside the treatment chambers, and that the workpieces be able to be pushed into and/or pulled out of the treatment chambers by means of one or more push conveyors. 
     It may be favorable if one or more work pieces are arranged on a workpiece carrier. A workpiece carrier is in particular a skid—preferably for receiving a workpiece designed as a vehicle body. 
     The conveyance and/or movement of the workpieces then preferably takes place together with the workpiece carrier, so that the wording, “conveyance of the workpieces” or “movement of the workpieces,” can also be understood to mean a conveyance or movement of at least one workpiece carrier together with at least one workpiece arranged thereon. 
     In one embodiment of the invention, it may be provided that the workpieces be arranged on, and in particular fixed to, the workpiece carrier through an entire treatment unit of the treatment plant. 
     Alternatively, it may be provided that the workpieces be conveyed through an entire treatment unit of the treatment plant without a workpiece carrier. The workpieces can then be transferred—in particular, in the treatment chambers—to stationary workpieces provided for this purpose or can be deposited thereon and/or can be fixed thereto. 
     The workpieces can preferably be moved along a horizontal plane by means of the conveying device, and in particular can be introduced into the treatment chamber and/or can be discharged from the treatment chamber. 
     In particular, it may be provided that the workpieces be able to be moved by means of the conveying device, and in particular be able to be introduced into the treatment chamber and/or be able to be discharged from the treatment chamber. 
     It may be favorable if the conveying device comprises one or more drive units for moving the workpieces, wherein the drive units, and in particular all the drive units of the conveying device, are preferably arranged outside the treatment chamber, at least during the performance of a treatment step (workpiece treatment). 
     It may be advantageous if the conveying device comprises a guiding device for the load-bearing accommodation of the workpieces, wherein the guiding device extends from outside the treatment chamber into the treatment chamber, and in particular through at least one access opening. 
     In this case, the guiding device is preferably arranged at least in sections within the treatment chamber, even if a treatment step (workpiece treatment) is performed. 
     Furthermore, it may be provided that the conveying device comprise a guiding device for the load-bearing accommodation of the workpieces, wherein the guiding device comprises both at least one guide path section arranged outside the treatment chamber and at least one guide path section arranged within the treatment chamber, wherein the workpieces can be transferred through the access opening from a guide path section arranged outside the treatment chamber to a guide path section arranged within the treatment chamber—in particular, by driving the workpieces by means of one or more drive units. 
     A drive unit may, for example, be a pushing device or a gripping device or a roller device. 
     Preferably, the workpieces can be discharged (removed) from the treatment chamber by means of the same drive unit or a different drive unit after a treatment step has been performed. 
     In one embodiment of the invention, it may be provided that the conveying device comprise one or more drive units which act on a guide path section of the conveying device from outside the treatment chamber. A drive unit may, for example, be an electric motor or comprise an electric motor. 
     The one or more drive units are preferably coupled purely mechanically to the guide path section. In particular, it may be provided that a coupling device produce a mechanical connection between the one or more drive units on the one hand and the guide path section of the conveying device on the other. By means of the one or more drive units arranged outside the treatment chamber, a workpiece guided within the treatment chamber on the guide path section can then in particular be driven, and, preferably, linearly moved. 
     It may be favorable if the one or more drive units are arranged above a maximum filling-level or above a maximum filling-height of the treatment chamber and/or on an outer side of a side wall of a treatment container surrounding the treatment chamber. 
     Preferably, one or more drive units are arranged on an end region of the treatment container facing away from an access opening of the treatment container and/or in a region, close to the ceiling, of a side wall of the treatment container. 
     The coupling device is preferably guided through the side wall, and preferably at the height of the one or more drive units. A through-opening for guiding the coupling device is preferably arranged and/or formed above a maximum filling-level or a maximum filling-height of the treatment chamber. A coupling element, guided through the side wall, of the coupling device is preferably a rotating shaft or coupling shaft. 
     The rotating shaft or coupling shaft is preferably connected by means of a pulling element, and in particular by means of a belt and/or a chain, e.g., a duplex chain, to a further rotating shaft or coupling shaft which is arranged in the region of the guide path section and ultimately acts directly or indirectly on the workpiece in order to move the same. 
     Alternatively or additionally, it may be provided in one embodiment of the invention that the treatment station comprise one or more sensor devices which enable a state and/or position detection within the treatment chamber from outside the treatment chamber. For example, a correct positioning of a workpiece within the treatment chamber can be determined or monitored by means of a sensor device. 
     The one or more sensor devices preferably respectively comprise one or more sensor elements which are arranged outside the treatment chamber and preferably coupled purely mechanically to one or more transducer elements within the treatment chamber. In particular, it may be provided that a coupling device produce a mechanical connection between the one or more sensor elements on the one hand and the one or more transducer elements on the other. By means of the one or more sensor elements arranged outside the treatment chamber, a workpiece arranged within the treatment chamber can then in particular be detected, and, preferably, its position determined or monitored. 
     It may be favorable if the one or more sensor elements are arranged above a maximum filling-level or above a maximum filling-height of the treatment chamber and/or on an outer side of a side wall of a treatment container surrounding the treatment chamber. 
     Preferably, one or more sensor elements are arranged in a region, close to the ceiling, of a side wall of the treatment container. 
     The coupling device is preferably guided through the side wall, and preferably at the height of the one or more sensor elements. A through-opening for guiding the coupling device is preferably arranged and/or formed above a maximum filling-level or a maximum filling-height of the treatment chamber. A coupling element, guided through the side wall, of the coupling device is preferably a rotating shaft or coupling shaft. 
     The rotating shaft or coupling shaft is preferably connected by means of a pulling element or pressure element, and in particular by means of a coupling rod, to a further rotating shaft or coupling shaft, which is arranged, for example, in a bottom region and/or in the region of a guide path section and is connected to a transducer element. By actuating the transducer element, e.g., by rotating the transducer element, a rotation of the further rotating shaft or coupling shaft, and thereby a—for example—vertical displacement of the coupling rod, and thereby a rotation of the (upper) rotating shaft or coupling shaft, can preferably be brought about, wherein the (upper) rotating shaft or coupling shaft guided out of the treatment chamber finally carries out or brings about a movement which can be detected by means of the at least one sensor element. By purely mechanical actuation of the coupling device, a change in the orientation or another movement of the transducer element can thus be detected by means of the one or more sensor elements. 
     It may be favorable if all bearing points coming into contact with fluid, and in particular treatment fluid, during the operation of the treatment station are designed as lubrication-free and/or graphite-free components, or comprise lubrication-free and/or graphite-free components. In particular, all plain bearings and/or rolling bearings are preferably designed to be lubrication-free and/or graphite-free. 
     In one embodiment of the invention, it may be provided that all bearing points coming into contact with fluid, and in particular treatment fluid, during the operation of the treatment station be designed as sintered bronze bushings and/or as plastic elements, or comprise sintered bronze bushings and/or plastic elements. 
     Preferably, all components coming into contact with fluid, and in particular treatment fluid, during the operation of the treatment station are designed to permanently remain with and/or contact the fluid—for example, by the choice of stainless steel as a material, and in particular V4A. 
     Preferably, no electrical components are arranged within the treatment chamber, and in particular within an interior of the treatment container. 
     It may be advantageous if the conveying device for conveying workpieces is designed to be open, and/or cover elements for at least partially covering components of the conveying device are dispensed with, at least within the treatment chamber. As a result, simple flow through and/or flushing of the conveying device can be made possible. Moreover, the accessibility is preferably optimized thereby. 
     The conveying device preferably comprises a locking device for locking the workpieces in a treatment position within the treatment chamber. 
     By means of the locking device, a movement of the workpiece counter to the direction of gravity, in particular, can be blocked. 
     By using such a locking device, it can preferably be avoided that the workpieces float or otherwise move or be otherwise raised during the flooding of the treatment chamber. 
     The locking device can, for example, comprise one or more locking elements or folding elements or holding elements which engage directly in one or more workpieces or in one or more workpiece carriers for accommodating one or more workpieces. 
     The one or more workpieces can preferably be fixed to one or more workpiece carriers, and in particular can be secured against displacement and/or raising, outside the treatment chamber and/or before being introduced into the treatment chamber. Alternatively or additionally, it may be provided that the one or more workpieces be fixed, and in particular fixed relative to one another and/or relative to the treatment chamber, within the treatment chamber and/or together with one or more workpiece carriers. 
     Alternatively or additionally, it may be provided that locking take place in that the at least one workpiece or a workpiece carrier for accommodating the at least one workpiece is conveyed into a locking receptacle, which is designed to be complementary thereto at least in sections, and in particular when the at least one workpiece and, where applicable, the workpiece carrier are introduced into the treatment chamber. 
     It may furthermore be advantageous if the conveying device comprises a movement device for tilting and/or turning the workpieces, and in particular for temporarily changing the position relative to an at least approximately horizontal normal position. 
     The horizontal normal position is in particular a standard orientation of the workpieces during the conveying and/or treatment of the same. By means of the movement device, a tilting process and/or a turning process can preferably be performed, whereby, in particular, a more efficient drainage of fluid off the workpieces can be achieved. 
     The treatment station may in particular be part of a treatment plant—for example, a painting plant. 
     In particular, a method for treating workpieces can be carried out by means of the treatment station. The method preferably comprises the following steps: 
     Introducing a workpiece through an access opening of a treatment container into a treatment chamber of the treatment container; 
     Closing the access opening of the treatment container by means of a closing device; 
     Flooding the treatment chamber with a fluid for performing a workpiece treatment. 
     After the workpiece treatment (treatment step) has been performed, the fluid is preferably removed, and in particular drained, from the treatment chamber. 
     Furthermore, the workpiece is then preferably removed from the treatment chamber through the one access opening or a further access opening. 
     In one embodiment of the invention, it may be provided that the treatment station comprise one or more installation elements which are arranged or can be arranged in the treatment chamber for supporting a flooding process. 
     Such installation elements are, in particular, components different from a conveying device for conveying the workpieces. 
     Preferably, these installation elements do not have any further technical effect or do not serve any further purpose apart from supporting the flooding process. However, alternatively, it may also be provided that one or more installation elements serve to accommodate functional components of the treatment station—for example, devices for the fluid distribution in the treatment chamber, measuring devices or other sensor units, etc. 
     By means of the installation elements, the flooding process can preferably be supported with regard to the time sequence and/or the optimization of a treatment step for treating the workpieces. 
     It may be favorable if a flow within the treatment chamber is generated and/or optimized, e.g., by means of one or more installation elements and/or by means of one or more feed lines and/or by means of one or more discharge lines and/or by means of one or more pump devices. 
     It may be favorable if one or more nozzles for feeding and/or circulating fluid are arranged in the treatment chamber, wherein the fluid is directed in particular to regions of the workpiece or the workpieces which require additional treatment and/or in which gas accumulations, e.g., air bubbles, can form during the flooding. By means of the one or more nozzles, the fluid can preferably be applied in such a way that gas accumulations, e.g., air bubbles, are expelled. 
     Alternatively or additionally thereto, it may be provided that a lifting and/or lowering movement and/or tilting movement and/or rotational movement of the at least one workpiece to be treated be able to be performed by means of the conveying device and/or by means of movement components provided additionally or alternatively to the conveying device, and in particular in order to expel gas accumulations—for example, air bubbles. 
     In one embodiment of the invention, it may be provided that one or more installation elements be designed as displacement elements, by means of which free spaces within the treatment chamber can in particular be filled which remain free during the flooding process without the respective installation element and would therefore need to be filled with fluid. 
     By means of one or more installation elements designed as displacement elements, the fluid volume required for performing the flooding process can thus in particular be reduced, and in particular by at least approximately 5%, and preferably at least approximately 10%, e.g., at least approximately 20%, of a fluid volume required overall for performing a flooding process. Furthermore, a total duration for performing the flooding process can preferably be reduced thereby. 
     It may be advantageous if one or more installation elements are adapted or can be adapted with regard to their position and/or with regard to their function and/or with regard to their shape to the workpieces to be treated. 
     For example, it may be provided that one or more displacement elements be adapted or be able to be adapted at least in sections or in regions to a shape of the workpiece to be treated. In particular, it may be provided that one or more displacement elements be formed at least in sections and/or to be at least approximately complementary to a workpiece shape so that the free spaces within the treatment chamber can preferably be minimized. 
     For example, it may be provided that one or more displacement elements be designed to be adapted to side walls and/or bottom regions and/or a front hood region and/or a rear hood region of workpieces designed as vehicle bodies. 
     Furthermore, it may be provided that one or more installation elements be arranged and/or able to be moved in such a way that, during the treatment of a workpiece, they project into an interior of the same or are at least partially arranged therein—in particular, without touching the workpiece. For example, in the case of workpieces which are designed as vehicle bodies of vans or (small) buses, etc., one or more installation elements can be introduced into the interior of the respective workpiece through a tailgate in order to reduce a free interior volume and thus the fluid volume required for a flooding process. 
     It may be provided that one or more displacement elements have a hollow body which can preferably be filled and/or kept filled and/or emptied independently of the flooding process. 
     In particular, one or more displacement elements are designed as hollow bodies and have one or more closable filling openings and/or one or more drainage openings. 
     Such displacement elements can, in particular, be formed very easily on their own and thus be easily arranged in the treatment chamber. An undesired floating or other movement of the displacement elements during a flooding process is preferably prevented by suitably fixing the displacement elements within the treatment container and/or by weighting down the same—for example, by filling the hollow body. For filling the one or more displacement elements, a fluid different from the fluid for performing the workpiece treatment or the same fluid can be used, for example. Furthermore, water may be provided as filling fluid for the one or more displacement elements. 
     It may be advantageous if an inner and an outer geometry of one or more displacement elements differ from one another so that, e.g., for filling and emptying, optimized cavities are formed within one or more displacement elements. 
     In one embodiment of the invention, it may be provided that the treatment container comprise one or more receptacles for fixing one or more installation elements—in particular, displacement elements. 
     One or more installation elements, e.g., displacement elements, and in particular displacement elements with different shapes and/or dimensions, preferably have fixing sections formed to be complementary to the receptacles so that they can preferably be easily fixed and/or exchanged. 
     It may be provided that one or more displacement elements be designed to be rigid. 
     One or more installation elements, and in particular displacement elements, are preferably fixed or fixable in a positive-locking and/or force-locking and/or releasable manner on and/or in the treatment container. 
     It may be favorable if one or more displacement elements are designed to be flexible and/or reshapeable and/or resizable—for example, inflatable. 
     As a result, the one or more displacement elements can be adapted in particular to different workpiece types in order to optimize the respective treatment step and/or flooding process. 
     The treatment station preferably comprises a variation device for varying the shape and/or size of the one or more displacement elements—in particular, for reducing a free space, within the treatment chamber, to be flooded for a treatment process. 
     A variation device may, for example, be a pump device by means of which filling fluid can be fed to a cavity within the one or more displacement elements in order to optimize the flooding process, wherein a control and/or regulation is in particular provided in such a way that a quantity of the fed filling fluid is selected depending upon the workpiece to be treated in each case, and in particular, automatically, by means of a suitably designed and configured control device. 
     It may be provided that one or more displacement elements fill one or more free spaces in the region of a conveying device of the treatment station. 
     Alternatively or additionally, it may be provided that one or more displacement elements fill a free space above a workpiece designed as a vehicle body, and in particular above a vehicle front and/or above a vehicle rear of the vehicle body. 
     In a further supplementary or alternative embodiment, it may be provided that one or more installation elements be designed as support elements for supporting a workpiece to be treated during the flooding process. 
     The one or more support elements thus preferably abut against the workpiece during the flooding process and preferably prevent bulging or buckling or another deformation of the respective workpiece. For this purpose, the one or more support elements are preferably movable and/or reshapeable and/or resizable. 
     In particular, one or more installation elements designed as displacement elements may simultaneously serve as support elements. 
     In order to perform a treatment step and/or after the treatment chamber has been flooded, the one or more support elements are preferably removed from the workpiece—in particular, in order to ensure complete wetting of the workpiece with the fluid, and in particular the treatment fluid. For this purpose, the one or more support elements can in particular be moved away from the workpiece. Alternatively or additionally, the removal can be realized by changing the shape and/or size of the support element. 
     It may be favorable if one or more of the support elements respectively have a support section which serves for the direct abutment on the workpiece for supporting the same. 
     A support section is, in particular, provided with a material that prevents damage to the workpiece and/or is elastically resilient. For example, a textile surface of the support section may be provided. 
     In a development of the invention, it may be provided that one or more installation elements be designed as temperature-control elements for controlling the temperature of the treatment container and/or of the fluid. 
     For this purpose, the one or more installation elements are in particular filled or fillable with—and in particular can be flowed through by—a heating medium or cooling medium. 
     It may be favorable if the one or more installation elements which are designed as temperature-control elements have one or more ribs or other surface enlargements in order to optimize heat transfer. 
     It may be favorable if the fluid flows over one or more installation elements designed as temperature-control elements during the flooding of the treatment chamber. This may also preferably optimize heat transfer. 
     Particularly for the variable adaptation of the treatment station to differently dimensioned workpieces, it may be provided that one or more installation elements be arranged or be able to be arranged temporarily, for one or more treatment processes and/or flooding processes, or else permanently in the treatment chamber. 
     In particular, it may be provided that the treatment station comprise a set of differently dimensioned installation elements, wherein, as required, individual installation elements, and in particular installation elements adapted to particular workpiece types, are introduced into the treatment chamber and fixed therein. When changing the workpiece type, the installation elements are then preferably replaced with differently dimensioned or functionally different installation elements. 
     It may be provided that one or more installation elements be fixed immovably in the treatment chamber during the flooding process, during the treatment process, and/or during the emptying of the treatment chamber. 
     Alternatively, for this purpose, it may be provided that one or more installation elements be movable within the treatment chamber, e.g., be able to be introduced during the flooding process into a free space of the treatment chamber that is to be flooded and/or can, after the flooding process and/or the treatment process (treatment step) has been performed, be removed—in particular, automatically—from the free space to be flooded. 
     It may be provided that one or more installation elements be arranged or be able to be arranged on a closing element for closing an access opening of the treatment container. 
     The one or more installation elements can then be moved—in particular, be brought into a position in which they support the flooding process—in particular, by moving the closing element itself. 
     The one or more installation elements can preferably be brought into a displacement position or support position by means of the closing element. 
     It may be favorable if the one or more installation elements can be moved—in particular, linearly moved—and/or pivoted, together with the closing element. 
     The workpieces can be treated by means of the treatment station; in particular, vehicle bodies can be cleaned and/or coated. 
     For this purpose, the workpieces are introduced into a treatment chamber of the treatment container. Subsequently, the treatment chamber is flooded with a fluid for performing a workpiece treatment, wherein the flooding is preferably supported by means of one or more installation elements that are arranged or can be arranged in the treatment chamber. 
     In an advantageous embodiment of the invention, it may be provided that the treatment station comprise a fluid tank for accommodating a fluid. Furthermore, the treatment station preferably comprises a fluid guide by means of which the fluid can be guided from the fluid tank into the treatment container in order to flood the treatment chamber and/or from the treatment container into the fluid tank in order to empty the treatment chamber. 
     For this purpose, the fluid guide preferably comprises one or more fluid lines, wherein preferably one fluid line for feeding the fluid from the fluid tank to the treatment container and a further fluid line—in particular, a separate fluid line—for feeding the fluid from the treatment container to the fluid tank are provided. 
     It may be favorable if the fluid tank is arranged above the treatment container with respect to the direction of gravity. 
     As a result, gravity can in particular be used for feeding the fluid to the treatment container, wherein a separate pump device can preferably be unnecessary. 
     In contrast, a pump device may be advantageous in order to pump the fluid from the treatment chamber back into the fluid tank. 
     Alternatively, for this purpose, it may be provided that the treatment container be arranged above the fluid tank with respect to the direction of gravity. As a result, the fluid can then be guided from the treatment container into the fluid tank without using a pump device, while a pump device is preferably provided in order to guide the fluid from the fluid tank into the treatment container. 
     It may be provided that the fluid guide comprise a fluid line, designed as a feed line, by means of which the fluid can be fed to the treatment chamber, wherein the feed line preferably opens into the treatment container in a bottom region of the same. In particular, undesired foam formation during the feeding of the fluid into the treatment container can thereby be reduced or completely avoided. 
     A bottom region of the treatment container is in particular a lower third, and preferably lower fifth, of the treatment chamber with respect to the maximum filling-height of the treatment chamber and/or with respect to a maximum filling-height. 
     The treatment container preferably comprises an inflow region which is arranged in particular below an access opening of the treatment container. The inflow region is preferably also filled with fluid in an emptied state, provided for replacing a workpiece, of the treatment container. 
     A minimum filling-height between two flooding processes and/or between the treatments of two workpieces is preferably selected or selectable such that the conveying device and/or other functional components or tank fittings always remain below the filling-level within the treatment chamber. This can prevent drying of contaminants—particularly when sticky or other adhering treatment fluids are used. 
     Furthermore, alternatively or additionally to avoiding contaminations as a result of sticky media or media that tend to coagulate as well as dry, it may be provided that—particularly after a flooding process, and in particular after emptying of the treatment container—wetting be maintained or cleaning take place in the treatment container, on installation elements and other components in the treatment chamber, and in particular on tank fittings, such as jet blocks, anodes, and a conveying device, as well as on the pipes, for filling and for emptying, necessary for operating the treatment station. For this purpose, liquids and/or filtrates may be used for cleaning, which provide the cleaning performance via suitable measures, such as the use of rigidly attached jet blocks or variably movable tank-cleaning nozzles. Self-cleaning methods, such as a submersible seal with preferably defined outlets, may optionally also be used for components that are difficult to reach, such as a seal between the treatment container and the closing device. 
     Furthermore, it may be provided that the treatment container and components arranged therein be protected against drying by hermetic sealing. In addition, the air humidity in the sealed unit may be monitored and re-wetted if necessary. This may optionally also be provided in the case of non-hermetically-sealed units. 
     Optionally, adhesive bonding may also be counteracted by permanent wetting with the medium used—in particular, treatment fluid. This is conceivable in particular in the case of conveying fittings, but also in the case of pipes for filling and for emptying. 
     The feed line preferably opens into the inflow region, and in particular below a fluid line of the inflow region, in order to enable an optimized fluid feed into the treatment chamber. 
     Furthermore, it may be provided that the inflow region be arranged and/or formed within the treatment chamber in one or more inflow containers—in particular, displacement elements—wherein the feed line in particular opens into the inflow container. On its upper side, for example, the inflow container in particular comprises outflow openings through which the fluid can flow into the treatment chamber for flooding the same. 
     In order to avoid sedimentation, it may be provided that the fluid in the inflow region be permanently or regularly circulated and/or treated, and in particular cleaned. 
     It may be favorable if the fluid guide comprises several feed lines, wherein one or more of these feed lines open into the treatment container in a bottom region of the same and/or wherein one or more feed lines end in or on one or more nozzles or other feed openings, by means of which the fluid can be directed and/or applied, e.g., as a jet or stream, onto the workpieces. 
     An emptied state of the treatment container is preferably a state of the treatment container in which the one or more access openings can be opened without effecting or risking fluid leakage through the access openings. An empty state thus in particular does not have to be a state of the treatment container in which any residual fluid has been removed from the treatment container. 
     A medium, and in particular a gas, e.g., air, displaced from the treatment chamber during the flooding of the same, may, for example, be discharged to the environment or treated and/or conducted to an exhaust air cleaning plant, for example, and/or into a dryer for drying the workpieces. 
     Furthermore, it may be provided that the displaced medium be introduced into the fluid tank. 
     In particular, when foam formation during a flooding process or filling cycle is to be expected or would be expected due to the type of feeding and/or due to the selected fluid, it may be advantageous if the treatment station comprises a compensation device for minimizing or preventing foam formation. The compensation device comprises in particular a nozzle device, e.g., a jet block, for injecting liquid—in particular, filtrate. The nozzle device is in particular arranged in a ceiling region of the treatment chamber. Alternatively or additionally, it may be provided that the compensation device comprise a vacuum device for evacuating air from the treatment chamber. Furthermore, alternatively or additionally, a chemical medium, and in particular a defoaming medium, may be fed to the fluid. 
     If the fluids used are media that tend towards air inclusions that make degassing necessary, devices for the removal thereof can additionally be provided for this purpose in the treatment containers. In addition to the possibility of evacuation, the generation of ultrasonic waves in the treatment container for coalescence of the gas bubbles in a batch process and in the continuous flow may, alternatively or additionally, also be provided, wherein the devices necessary for this purpose are integrated or can be integrated into an additionally or already existing circuit, for example. Alternatively, chemical modifications of the formulation and/or an addition of additives to the fluid to be introduced may be provided. 
     It may be advantageous if the fluid guide comprises a cleaning device for cleaning the fluid. 
     The cleaning device is preferably arranged outside the treatment container and/or outside the fluid tank. 
     Preferably, the cleaning device is arranged in a return line for returning the fluid into the fluid tank. As a result, the fluid can preferably be cleaned and/or treated in one or more treatment containers when it is returned and/or before each start of a cycle, and in particular before a new flooding process. 
     The treatment station preferably comprises a control device by means of which a flooding process in the treatment chamber can be controlled and/or regulated—in particular, by controlling and/or regulating a valve device for opening and closing a feed line for feeding fluid to the treatment chamber. 
     One or more workpiece parameters, and in particular a geometry and/or size and/or position of the respective workpiece within the treatment chamber, are preferably taken into account in the control and/or regulation of the flooding process. 
     The one or more workpiece parameters are transferred to the control device in particular via a machine control and/or through CAD data, barcode recognition, RFID information, or other workpiece-specific data sets. 
     The flooding process is preferably controlled by means of the control device in such a way that a filling speed and/or a rate of change of the fill-level of the fluid in the treatment chamber during the flooding is varied, and in particular adapted to local stability differences of the workpieces and/or adapted to a surface of the water surface which varies along the direction of gravity. 
     For example, it may be provided that the flooding process be able to be controlled by means of the control device in such a way that a fluid level in the treatment chamber rises at least approximately constantly. 
     Alternatively, it may be provided that the flooding process be able to be controlled by means of the control device in such a way that the volume flow of the fed fluid is increased if the fluid level sweeps over more stable regions of the workpieces, and that the volume flow of the fed fluid is reduced if the fluid level of the fluid sweeps over less stable regions of the workpieces. 
     The treatment station may, for example, comprise one or more measuring devices by means of which, for example, a volume flow of the fluid flowing into the treatment chamber and/or a fill-level or filling-level within the treatment chamber and/or a fill-level or filling-level in the fluid tank can be determined. 
     One or more measured values of the one or more measuring devices are preferably taken into account in the control and/or regulation of the flooding process. 
     Preferably, a maximum filling-height (maximum filling-level) during a flooding process is selected according to the workpiece geometry and/or position. For example, in the case of a workpiece designed as a vehicle body, it may be provided that the treatment chamber be always filled with fluid to such an extent that the filling-level is just above a roof of the vehicle body, e.g., at most approximately 10 cm, and preferably at most approximately 5 cm, e.g., at most approximately 3 cm, above the roof. 
     Furthermore, it may be provided that one or more leakages be determined by means of one or more measuring devices, e.g., by means of fill-level or filling-level or volume-flow monitoring by means of one or more measuring devices. Preferably, a leak-tightness of one or more closing devices can be deduced therefrom. 
     In one embodiment, the treatment station may have a counter tank which is in particular arranged below the treatment chamber with respect to the direction of gravity and to which the fluid to be discharged from the treatment chamber can be fed. 
     In this case, the fluid can preferably be guided from the fluid tank into the treatment chamber and/or from the treatment chamber into the counter tank using only gravity. 
     By means of a pump device, for example, the fluid can preferably be guided from the counter tank back into the fluid tank. 
     The fluid tank is thus in particular a storage tank for providing the fluid—in particular, in a state of the fluid that is ready for performing a treatment process. For this purpose, the fluid can be cleaned or treated—in particular, by means of a cleaning device—in particular, on the conveying path between the counter tank and the fluid tank. 
     It may be advantageous if the treatment station comprises two or more than two treatment chambers, and in particular two or more than two treatment containers with one treatment chamber each. 
     In this case, a common fluid tank for feeding the fluid to the two or more than two treatment chambers may be provided. 
     Alternatively, several fluid tanks may be provided, and in particular for several fluids in the same treatment chamber. 
     For example, it may be provided that a treatment chamber of a treatment station be able to be flooded selectively, and in particular alternately, with different fluids—in particular, in order to perform different treatment steps on one or more workpieces located in the treatment chamber. 
     Furthermore, it may be provided for this purpose that several counter tanks be provided for the several fluids. 
     Moreover, a common counter tank for more than two treatment chambers may be provided. 
     In this description and the appended claims, a tank is in particular a general receptacle for a fluid; for example, this may be individual containers, or several containers coupled to one another. 
     It may be provided that the treatment station comprise a flushing device for flushing and/or cleaning the treatment chamber, wherein a flushing medium can be introduced, and in particular sprayed, into the treatment chamber and can be removed from the same, and in particular discharged, by means of the flushing device—in particular, independently of the fluid, independently of the fluid tank, and/or independently of a counter tank. 
     The flushing device may comprise spray nozzles which are in particular arranged in the treatment chamber and/or are directed into the treatment chamber and which serve, in particular, for rinsing walls and/or a conveying device arranged in the treatment chamber. 
     In order to treat the workpieces, it may in particular be provided in the treatment station described that the workpieces be introduced into the treatment chamber of the treatment container and that the treatment chamber be flooded with a fluid in order to perform a workpiece treatment, wherein the fluid is guided from the fluid tank into the treatment container in order to flood the treatment chamber and/or from the treatment container into the fluid tank in order to empty the treatment chamber. 
     The treatment station can in particular be used in a treatment plant. 
     A treatment plant in particular serves for treating workpieces. 
     The treatment plant preferably comprises several treatment stations for treating the workpieces, and in particular for cleaning and/or coating vehicle bodies. 
     Each treatment station preferably comprises at least one treatment container, which surrounds a treatment chamber for accommodating the workpieces, wherein each treatment station separately, or several treatment stations jointly, comprise a fluid tank for accommodating a fluid, and wherein the treatment stations preferably comprise a fluid guide, by means of which the fluid can be guided from the fluid tank into the respective treatment container in order to flood one or more treatment chambers and/or from the respective treatment container into the fluid tank in order to empty the treatment chambers. 
     During flooding of one or more treatment chambers, a fluid level inside the treatment chamber is preferably increased by a factor of at least 10, and preferably at least 50, e.g., at least 100. 
     Furthermore, when flooding one or more treatment chambers, the liquid level is preferably raised from a minimum level to at least approximately 50%, and preferably at least approximately 70%, e.g., at least approximately 90%, of an overall interior height of the treatment chamber. 
     For emptying one or more treatment chambers, preferably at least approximately 50%, and in particular at least approximately 80%, e.g., at least approximately 90%, of the fluid—in particular, the treatment fluid—located therein is removed from the treatment chamber. 
     A flooding process and an emptying process are preferably performed for each workpiece or each group of workpieces that is or are introduced separately into the treatment chamber. 
     In one embodiment of the invention, it is provided that the treatment plant comprise several first treatment stations for performing a first step and several second treatment stations for performing a second treatment step, wherein one or more first treatment stations and one or more second treatment stations respectively are preferably part of or form a treatment unit of the treatment plant that is passed through by the workpieces in order to perform the treatment steps. 
     A treatment unit in particular comprises several successive treatment stations along a main conveying direction of a conveying device for conveying the workpieces. All treatment steps that can be successively performed for the workpiece treatment can preferably be performed by means of a treatment unit. 
     It may be provided that the treatment plant comprise several treatment units which, in particular, respectively comprise one or more first treatment stations and one or more second treatment stations, and/or which, in particular, form distinct treatment lines of the treatment plant. 
     One or more first treatment stations of distinct treatment units preferably have a common fluid guide and/or a common fluid tank. Alternatively or additionally, it may be provided that one or more second treatment stations of distinct treatment units have a common fluid guide and/or a common fluid tank. 
     Furthermore, it may alternatively or additionally be provided that one or more first treatment stations of distinct treatment units have a common counter tank and/or a common cleaning device. Moreover, it may alternatively or additionally be provided that one or more second treatment stations of distinct treatment units have a common counter tank and/or a common cleaning device. 
     It may be favorable if a fluid, and in particular a first treatment fluid, can be fed, by means of the fluid guide, first 
     a) to one or more treatment chambers of one or more treatment stations, and in particular first treatment stations, of a first treatment unit, and thereafter 
     b) to one or more treatment chambers of one or more treatment stations, and in particular first treatment stations, of a second treatment unit. One or more interim storage tanks may be arranged between the first treatment unit and the second treatment unit and/or between two treatment stations of the same treatment unit or of distinct treatment units. 
     It may be favorable if a fluid, and in particular a second treatment fluid, can be fed, by means of the fluid guide, first 
     a) to one or more treatment chambers of one or more treatment stations, and in particular second treatment stations, of a first treatment unit, and thereafter 
     b) to one or more treatment chambers of one or more treatment stations, and in particular second treatment stations, of a second treatment unit. One or more interim storage tanks may be arranged between the first treatment unit and the second treatment unit and/or between two treatment stations of the same treatment unit or of distinct treatment units. 
     It may be favorable if the fluid can alternately be fed, by means of the fluid guide, to treatment chambers of distinct treatment units. 
     Alternatively or additionally, it may be provided that the fluid be able to alternately be fed, by means of the fluid guide, to treatment chambers of the same treatment unit. 
     The fluid guide is preferably connected to a cleaning device or comprises such a cleaning device so that the fluid can in particular be cleaned after removal from one of the treatment chambers and/or before a new feeding to a further one of the treatment chambers. 
     The cleaning of the fluid preferably takes place during the emptying of a treatment chamber and/or after a single or multiple use of the same in a flooding process and/or treatment step. 
     A total quantity of a fluid contained overall in a fluid guide is preferably at most approximately twice, and in particular at most approximately three times, a quantity of the fluid required for performing a single flooding process in a treatment chamber. 
     The fluid guide preferably comprises all the components conducting and accommodating the fluid, and in particular one or more fluid tanks, one or more treatment chambers, one or more interim storage tanks, and/or one or more counter tanks, as well as, optionally, one or more cleaning devices. 
     The quantity of fluid is in particular a mass of the fluid and/or a volume of the fluid—in particular, under normal conditions. 
     In order to perform cleaning work, the fluid can preferably be selectively brought, and in particular pumped, into individual or multiple components of the fluid guide and stored therein. For example, it may be provided that, for cleaning at least one fluid tank, the fluid be able to be accommodated completely in one or more treatment containers and/or in one or more counter tanks. Furthermore, for cleaning the one or more treatment containers, it may, for example, be provided that the fluid be able to be accommodated completely in one or more fluid tanks and/or in one or more counter tanks. Moreover, it may optionally be provided that, for cleaning the one or more counter tanks, for example, the fluid be able to be accommodated completely in one or more fluid tanks and/or in one or more treatment containers. 
     It may be advantageous if several, and in particular all, of the treatment stations of a treatment unit, and in particular one or more or all of the first treatment stations and one or more or all of the second treatment stations of a treatment unit, are arranged on a common level of the treatment plant. This is to be understood in particular as meaning that the treatment chambers of the treatment stations are accessible to the workpieces exclusively through a horizontal movement of the same, and in particular without a height change or level change. 
     It may be advantageous if several treatment units of the treatment plant are arranged on distinct levels of the treatment plant. 
     It may be provided that several treatment stations be arranged one above the other along the direction of gravity. The treatment stations may in this case be arranged, and in particular supported, on different sections or levels of a supporting structure, and in particular a steel construction, of the treatment plant. Furthermore, it may be provided that one or more treatment stations respectively accommodate in a load-bearing manner one or more further treatment stations arranged thereabove. An additional supporting structure may here be unnecessary. For this purpose, the treatment containers are preferably dimensioned and/or designed in such a way that they can accommodate the weight forces of one or more treatment stations arranged thereabove. 
     It may be advantageous if one or more fluid tanks or counter tanks are arranged above one or more treatment containers or between two treatment containers, and in particular are held in a load-bearing manner by the one or more treatment containers. An additional supporting structure for the one or more fluid tanks or counter tanks is then, preferably, unnecessary. 
     Furthermore, it may be provided that one or more treatment containers be arranged directly on one or more fluid tanks and/or counter tanks, and that the one or more fluid tanks and/or counter tanks accommodate the one or more treatment containers in a load-bearing manner. 
     One or more treatment stations of distinct treatment units of the treatment plant, which have a common fluid guide and/or which serve to perform the same treatment step, are preferably arranged one above the other along the direction of gravity. 
     The several treatment units arranged on different levels of the treatment plant are preferably functionally identical so that, in particular with each treatment unit, the same treatment steps can be performed, in order to be able to ultimately provide a greater treatment capacity of the treatment plant in comparison to a single treatment unit. 
     In this case, the workpieces are preferably respectively assigned separately to a single one of the several treatment units and pass through only this single treatment unit. In contrast, one or more fluid guides are preferably designed to spread across several treatment units and are in particular assigned to several treatment units for performing the same treatment steps. 
     It may be favorable if treatment stations arranged one above the other along the direction of gravity are connected by means of a common fluid guide, so that in particular a fluid can be fed in succession to the individual treatment stations and can be used for performing flooding processes, wherein the fluid can be guided from a treatment station to a further treatment station located below the direction of gravity in particular by using gravity. 
     It may be favorable if a common counter tank is arranged under all treatment stations and/or if a common fluid tank is arranged above all treatment stations. 
     The fluid can then be guided in particular from the fluid tank to an upper treatment station, then to a lower treatment station (where applicable, in-between to a central treatment station), and finally to the counter tank. The fluid can preferably be pumped from the counter tank back into the fluid tank by means of a pump device. 
     It may be advantageous if the treatment plant comprises several fluid guides for guiding distinct treatment fluids, wherein the fluid guides are assigned to distinct treatment stations for performing different treatment steps. 
     Alternatively or additionally, it may be provided that the treatment plant comprise several fluid guides for guiding distinct treatment fluids, wherein the fluid guides are assigned to the same treatment stations so that one of the treatment fluids can selectively be fed to the treatment stations in order to selectively perform different treatment steps. 
     In order to treat workpieces, a method is in particular carried out in which the following method steps are performed: 
     Introducing one or more workpieces into one or more treatment chambers of one or more treatment stations; 
     Flooding the one or more treatment chambers with a fluid for performing the treatment, 
     wherein, by means of a fluid guide, the fluid is guided from the fluid tank into the respective treatment chamber in order to flood one or more treatment chambers and/or from the respective treatment chamber into the fluid tank in order to empty the treatment chambers. 
     It may be favorable if the fluid is removed from the fluid tank successively, and in particular completely staggered in time, and fed to one or more treatment chambers. 
     In particular, thereafter, e.g., subsequently or at a later point in time, the fluid is preferably guided back into the fluid tank—optionally, after a cleaning of the fluid in a cleaning device. The fluid tank and/or the one or more treatment chambers are thus preferably alternately filled and emptied. 
     Furthermore, it may be provided that the fluid be fed successively, and in particular completely staggered in time, to one or more treatment chambers in a treatment station of a first treatment unit, and thereafter, and in particular subsequently or at a later point in time, e.g., after interim storage in an interim storage tank, be fed to one or more treatment chambers of a treatment station of a second treatment unit. 
     It may be advantageous if a treatment plant comprises several treatment stations for treating the workpieces, and in particular for cleaning and/or coating vehicle bodies, wherein one or more treatment stations, preferably, respectively comprise at least one treatment container which surrounds a treatment chamber for accommodating the workpieces. 
     The treatment plant preferably comprises a fluid guide by means of which one or more of the treatment chambers can be selectively flooded or emptied. 
     It may be favorable if the treatment plant comprises a conveying device for conveying the workpieces, by means of which the workpieces can be introduced into the one or more treatment chambers or discharged from the same in an emptied state of the same. It may be provided that the workpieces be able to be moved along a horizontal plane by means of the conveying device, and in particular be able to be introduced into the treatment chamber and/or be able to be discharged from the treatment chamber. 
     In particular, the workpieces can be introduced into the treatment chamber through an access opening or can be discharged from the treatment chamber through a further or the same access opening. 
     The treatment plant preferably comprises a main conveying path which extends in a main conveying direction and along which the workpieces can be conveyed by means of the conveying device from a treatment station to a further treatment station, wherein distinct treatment steps are preferably performed or can be performed at the treatment stations. 
     The workpieces can preferably be conveyed in a transverse orientation of the same along the main conveying direction or along the main conveying path. 
     A transverse orientation of the workpieces is in particular an orientation of the workpieces in such a way that a main longitudinal axis of the workpieces, and in particular a main longitudinal axis of the vehicle bodies, is oriented transversely, and preferably at least approximately perpendicularly, to the movement direction, and in particular the main conveying direction, when the workpieces are conveyed along the movement direction, and in particular the main conveying direction. 
     A longitudinal orientation of the workpieces is in particular an orientation of the workpieces in such a way that a main longitudinal axis of the workpieces, and in particular a main longitudinal axis of the vehicle bodies, is oriented at least approximately in parallel to the movement direction, and in particular the main conveying direction, when the workpieces are conveyed along the movement direction, and in particular the main conveying direction. 
     It may be provided that the workpieces be able, in a longitudinal orientation of the same, to be introduced into or discharged from one or more treatment chambers. 
     A movement direction of the workpieces during the introduction into the treatment chambers and/or during the discharge of the same from the treatment chambers is preferably transverse, and in particular at least approximately perpendicular, to the main conveying direction. 
     In particular, it may be provided that the workpieces be able to be introduced into the treatment chambers in an introduction direction, wherein the introduction direction is transverse, and in particular at least approximately perpendicular, to a main conveying direction of the conveying device. 
     The treatment plant preferably comprises several treatment stations for performing identical treatment steps, wherein two or more such treatment stations are preferably arranged on opposite sides of a main conveying path of the conveying device. 
     By means of the conveying device, the conveyed workpieces can preferably be alternately distributed to the treatment stations. 
     Furthermore, it may be provided that the treatment plant comprise several treatment stations for performing identical treatment steps, wherein two or more such treatment stations are arranged along a main conveying direction of the conveying device in succession and/or next to one another and/or on the same side with respect to the main conveying path. By means of the conveying device, the workpieces may preferably also be allocated to these treatment stations—in particular, in order to enable optimized utilization of the treatment plant. 
     It may be provided that several treatment stations form one treatment unit, wherein several, and in particular all, treatment stations of a treatment unit, and in particular one or more or all of the first treatment stations and one or more or all second treatment stations of a treatment unit, are arranged on a common level of the treatment plant. 
     In one embodiment of the invention, it may be provided that the treatment plant include a main conveying path which extends in a main conveying direction and along which the workpieces can be conveyed by means of the conveying device from a treatment station to a further treatment station, wherein the main conveying path comprises one or more tunnel sections for housing the main conveying path. 
     Preferably, one or more tunnel sections, and in particular one or more tunnel sections arranged along the main conveying direction between two treatment stations, have a cleaning station and/or flushing station and/or spraying station, e.g., for applying a cleaning fluid, e.g., a degreasing fluid. The applied fluid can in particular be sprayed onto the workpieces or delivered to the workpieces in a stream-like manner. 
     It may happen that fluid drips off the workpieces during the conveyance of the same. The conveying device, and in particular a main conveying path, therefore preferably comprises one or more collecting elements which are designed, for example, as collecting troughs and serve to accommodate the fluid that drips down from the workpieces. 
     For sealing in a transition region between a treatment container and one or more collecting elements, and/or between a treatment container and a tunnel section, a flush termination and/or one or more sealing elements, e.g., sealing plates, sealing brushes, sealing hoods, and/or one or more suction devices, may be provided, for example. 
     It may be advantageous if the treatment station and/or the treatment plant comprises a blower device for blowing fluid from the workpieces. Such a blower device may be arranged, for example, within a treatment container and/or in a tunnel section and/or at a transition between them. For example, a blower device may be arranged and/or formed outside the treatment container in the region of the closing device. 
     A blower device comprises in particular one or more air-curtain devices for generating an air curtain for the global inflow of the workpieces and/or one or more nozzle devices, e.g., jet nozzles, for generating individual flow jets for local inflow of the workpieces, and in particular for directed blowing out of fluid accumulations. 
     The treatment plant preferably comprises two treatment units which are arranged on a common level of the treatment plant, wherein main conveying paths of the conveying devices of the two treatment units are oriented in antiparallel to one another and/or are arranged linearly in succession. 
     In particular, it may be provided that the two treatment units have feeding stations, arranged facing away from one another, for feeding the workpieces and/or removal stations, arranged facing one another, for removing the workpieces, and/or a common removal station for removing the workpieces, which is arranged in particular centrally between the main conveying paths. 
     Alternatively, it may be provided that the two treatment units have removal stations, arranged facing away from one another, for removing the workpieces and/or feeding stations, arranged facing one another, for feeding the workpieces, and/or a common feeding station for feeding the workpieces, which is arranged in particular centrally between the main conveying paths. 
     It may be advantageous if the conveying device comprises one or more branching conveyors by means of which the workpieces can be removed from a main conveying path and can be introduced into one or more treatment chambers, and/or by means of which the workpieces can be discharged from one or more treatment chambers and can be brought back onto the main conveying path. 
     In particular, in the case of such treatment plants, it may be provided, for the treatment of workpieces, and in particular for cleaning and/or coating vehicle bodies, that the following method steps be performed: 
     Conveying one or more workpieces by means of a conveying device; 
     Introducing the one or more workpieces into a treatment chamber of a treatment station for performing a treatment step; 
     Flooding the treatment chamber with a fluid; 
     Removing the fluid and discharging the workpieces from the treatment chamber by means of the conveying device, wherein the workpieces are in particular introduced into the treatment chamber and discharged from the same in an at least approximately horizontal direction. 
     It is preferably further provided that the workpieces be conveyed along a main conveying direction from one treatment station to the next and be introduced into the treatment chambers of the treatment stations in an introduction direction extending transversely, and in particular perpendicularly, to the main conveying direction. 
     In a further embodiment of a treatment plant, it may be provided that the treatment plant comprise several treatment stations for treating the workpieces, and in particular for cleaning and/or coating vehicle bodies, wherein one or more treatment stations respectively comprise at least one treatment container which surrounds a treatment chamber for accommodating the workpieces, wherein the treatment plant comprises a fluid guide by means of which one or more of the treatment chambers can be selectively flooded or emptied. 
     The treatment plant preferably comprises a conveying device for conveying the workpieces, by means of which, in an emptied state of the respective treatment chamber, the workpieces can be introduced into the same through an access opening designed as an introduction opening, and by means of which, in an emptied state of the respective treatment chamber, the workpieces can be discharged from the same through an access opening designed as a discharge opening. 
     The introduction opening and the discharge opening are preferably distinct access openings, and in particular in opposite side walls of a treatment station. 
     It may be advantageous if the workpieces can be moved, and in particular can be introduced into the treatment chamber and/or can be discharged from the treatment chamber, along a horizontal plane by means of the conveying device. 
     Preferably, a height position of the workpieces remains at least approximately unchanged during the introduction of the same into the treatment chamber and/or during the discharge of the same from the treatment chamber. 
     It may be favorable if the treatment plant comprises a main conveying path which extends in a main conveying direction and along which the workpieces can be conveyed by means of the conveying device from a treatment station to a further treatment station. 
     Furthermore, it may be provided that the workpieces be able to be conveyed, in a longitudinal orientation of the same, along the main conveying direction and/or along the main conveying path. 
     The workpieces can preferably be conveyed, in a longitudinal orientation of the same, through one or more treatment chambers. 
     It may be provided that the conveying device comprise one or more transfer stations, at which or by means of which the workpieces can selectively be transferred from a treatment station to a further treatment station, which follows along a main conveying direction, of the same treatment unit and/or of a treatment unit different therefrom of the treatment plant. By means of such a transfer station, a transfer of workpieces from a treatment unit to a further treatment unit, in particular, can take place, e.g., in order to be able to temporarily bypass a treatment station, which is defective or to be maintained or to be cleaned, of a treatment unit without having to completely take the relevant treatment unit out of operation. 
     It may be favorable if the treatment plant comprises several treatment stations for performing identical treatment steps, wherein two or more such treatment stations are preferably arranged adjacently to one another and/or are parts of treatment units, extending in parallel to one another, or their treatment lines of the treatment plant. 
     A treatment line is in particular a treatment unit in which the treatment stations of the treatment unit are arranged in succession along a treatment direction, and in particular a main conveying direction. 
     In one embodiment of the invention, it may be provided that the treatment plant comprise a main conveying path which extends in a main conveying direction and along which the workpieces can be conveyed by means of the conveying device from a treatment station to a further treatment station, wherein the main conveying path comprises one or more tunnel sections for housing the main conveying path, wherein one or more tunnel sections, and in particular one or more tunnel sections arranged along the main conveying direction between two treatment stations, have a cleaning station and/or flushing station and/or spraying station. 
     One or more cleaning stations and/or flushing stations and/or spraying stations are preferably arranged and/or formed on one or more transfer stations. 
     In order to separate individual tunnel sections and/or one or more cleaning stations and/or flushing stations and/or spraying stations, a mechanical gate, e.g., a rolling gate or a high-speed gate, may be provided. 
     The treatment plant preferably comprises at least two treatment stations for performing the same treatment process, wherein a distributor device or a combining device are arranged in front of and/or after these treatment stations with respect to a main conveying direction of the workpieces. 
     By means of a distributor device, the workpieces fed via a conveying device can preferably be allocated or distributed to the at least two treatment stations. As a result, a common feeding of the workpieces may be provided in order to optimize the conveying outlay. 
     By means of a combining device, the workpieces discharged from the at least two treatment stations can preferably be combined and conveyed further together, so that a conveying outlay can preferably likewise be minimized. 
     The distributor device and/or the combining device are preferably respectively designed as a transverse displacement device. 
     In the case of such a transverse displacement device, it is in particular provided that the workpieces be displaced in a direction transverse, and in particular perpendicular, to a main conveying direction, in order to subsequently enable further conveying offset in parallel to the main conveying direction, and in particular a further conveying offset in parallel to the main conveying path. 
     The treatment plant preferably comprises one or more treatment stations for performing flooding processes and one or more treatment stations for performing dipping processes. 
     In treatment stations for performing flooding processes, the workpiece is preferably kept stationary while the fluid is introduced into the treatment chamber and a flooding process is thus performed. 
     In contrast, in treatment stations for performing dipping processes, the fluid is preferably substantially stationary so that the workpiece is introduced into the fluid in particular from above and is moved upwards out of the fluid after the treatment process has been performed, e.g., by turning in and turning out or lowering and raising the respective workpiece. 
     The one or more treatment stations for performing flooding processes are respectively used for pretreating, and in particular cleaning, degreasing, and/or phosphating, the workpieces. 
     The one or more treatment stations for performing dipping processes are preferably used for coating, and in particular for painting, the workpieces; for example, a cathodic dip-painting plant in the form of treatment stations for performing dipping processes maybe provided subsequent to one or more treatment stations for performing flooding processes. 
     In order to treat the workpieces, a method is in particular carried out which comprises the following: 
     Conveying one or more workpieces by means of a conveying device; 
     Introducing the one or more workpieces into a treatment chamber of a treatment station for performing the treatment step; 
     Flooding the treatment chamber with a fluid; 
     Removing the fluid and discharging the workpieces from the treatment chamber by means of the conveying device, 
     wherein, in an empty state of the respective treatment chamber, the workpieces are introduced into the same by means of the conveying device through an access opening designed as an introduction opening and by means of which, in an empty state of the respective treatment chamber, the workpieces are discharged from the same through an access opening designed as a discharge opening, wherein the introduction opening and the discharge opening are preferably distinct access openings. 
     The workpieces are preferably conveyed, in a longitudinal orientation of the same, along a main conveying direction from one treatment station to the next and are conveyed in the same longitudinal orientation through the treatment chambers of the treatment stations. 
     It may be favorable if one or more treatment stations, and in particular one or more treatment containers and/or fluid tanks, are designed and/or arranged to be transported modularly and/or separately as a whole. In particular, it may be provided that one or more treatment stations, and in particular one or more treatment containers and/or fluid tanks, be arranged as required on a main conveying path or remotely therefrom and accordingly be able to optionally be populated with workpieces or be able to be bypassed in the treatment sequence. 
     Further preferred features and/or advantages of the invention are the subject matter of the following description and the drawings illustrating exemplary embodiments. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    shows a schematic perspectival illustration of a first embodiment of a treatment plant in which two treatment units arranged one above the other are provided with in each case several treatment stations, wherein the workpieces can be conveyed by means of a conveying device in a transverse orientation along a main conveying direction; 
         FIG.  2    shows a schematic vertical sectional view through the treatment plant of  FIG.  1   ; 
         FIG.  3    shows a schematic plan view from above of the treatment plant of  FIG.  1   ; 
         FIG.  4    shows a schematic vertical cross-section through the treatment plant of  FIG.  1   ; 
         FIG.  5    shows a schematic perspectival illustration of a treatment station of the treatment plant of  FIG.  1   ; 
         FIG.  6    shows a further schematic perspectival illustration of the treatment station of  FIG.  5   , wherein a side wall of a treatment container of the treatment station is hidden; 
         FIG.  7    shows a schematic perspectival illustration, corresponding to  FIG.  1   , of a second embodiment of a treatment plant in which the workpieces can be conveyed, in a longitudinal orientation of the same, along a main conveying direction; 
         FIG.  8    shows a schematic side view of the treatment plant of  FIG.  7   ; 
         FIG.  9    shows a schematic plan view from above of the treatment plant of  FIG.  7   ; 
         FIG.  10    shows a schematic vertical cross-section through the treatment plant of  FIG.  7   ; 
         FIG.  11    shows a schematic perspectival illustration, corresponding to  FIG.  5   , of a treatment station of the treatment plant of  FIG.  7   ; 
         FIG.  12    shows a schematic perspectival illustration, corresponding to  FIG.  11   , of the treatment station of the treatment plant of  FIG.  7   , wherein a side wall of a treatment container of the treatment station is hidden; 
         FIG.  13    shows a schematic plan view of a third embodiment of a treatment plant in which treatment stations are provided on both sides of a main conveying path; 
         FIG.  14    shows a schematic plan view of a fourth embodiment of a treatment plant in which two ends, facing away from one another, of a common main conveying path or two main conveying paths are adjacent to feeding stations for feeding the workpieces, wherein a common removal station for removing the workpieces is provided essentially centrally; 
         FIG.  15    shows a schematic plan view of a fifth embodiment of a treatment plant in which distributor devices and combining devices of a conveying device are provided so that the workpieces can be distributed to different treatment stations and can be combined to minimize the conveying outlay; 
         FIG.  16    shows a schematic plan view of an upper side of a sixth embodiment of a treatment plant in which a combination of treatment stations for performing flooding processes and treatment stations for performing dipping processes is provided; 
         FIG.  17    shows an enlarged illustration of the region XVII in  FIG.  16    in the form of a vertical, longitudinal, sectional illustration; 
         FIG.  18    shows an enlarged illustration of the region XVIII in  FIG.  17   ; 
         FIG.  19    shows an alternative configuration of the treatment station shown in  FIG.  18   ; 
         FIG.  20    shows a schematic vertical cross-section through the treatment station according to  FIG.  19   , wherein a different workpiece to be treated is arranged within a treatment chamber of the treatment station; 
         FIG.  21    shows a schematic perspectival illustration of a treatment station in which an external drive unit of a conveying device and two external sensor elements of a sensor device are provided; 
         FIG.  22    shows a schematic perspectival isolated illustration of the conveying device and the sensor device of  FIG.  21   ; 
         FIG.  23    shows an enlarged illustration of the region XXIII in  FIG.  22   , with a view of an inner side, facing the treatment chamber, of the drive unit and an upper part of a coupling device; 
         FIG.  24    shows an enlarged illustration of the region XXIV in  FIG.  22   ; 
         FIG.  25    shows an enlarged illustration of the region XXV in  FIG.  22   ; 
         FIG.  26    shows an enlarged illustration of the region XXVI in  FIG.  22   ; and 
         FIG.  27    shows an enlarged illustration of the region XXVI in  FIG.  22   , with a different viewing direction. 
     
    
    
     The same or functionally equivalent elements are provided with the same reference signs in all figures. 
     DETAILED DESCRIPTION OF THE DRAWINGS 
     A treatment plant shown in  FIGS.  1  through  6    and denoted as a whole by  100  serves for treating workpieces  102 , e.g., vehicle bodies  104 . 
     The treatment plant  100  comprises one or more treatment units  106 , e.g., two treatment units  106 , which are selectively passed through by the workpieces  102  in order to perform several treatment steps. 
     In the first embodiment of the treatment plant  100  shown in  FIGS.  1  through  6   , a feeding station  108  for feeding to the treatment units  106  is provided. 
     The feeding station  108  is part of a conveying device  110  of the treatment plant  100 . 
     Preferably, the feeding station  108  forms a distributor device  112  for distributing the workpieces  102  to the treatment units  106 . 
     The feeding station  108  is designed, for example, as a lift and serves to feed the workpieces  102  to treatment units  106  arranged on different levels of the treatment plant  100 . 
     The treatment plant  100 , and in particular each treatment unit  106 , comprises one or more treatment stations  114  for treating the workpieces  102 , and in particular for performing flooding processes to be described in greater detail. 
     The treatment stations  114  are arranged in succession along a main conveying direction  116  of the conveying device  110 . 
     In the first embodiment of the treatment plant  100  shown in  FIGS.  1  through  6   , a main conveying path  118  of the conveying device  110  is provided, which extends along all treatment stations  114  and from which the workpieces  102  can be fed to the individual treatment stations  114 . 
     The main conveying path  118  comprises in particular one or more tunnel sections  120  for housing at least individual sections of the main conveying path  118 . 
     Furthermore, the main conveying path  118  preferably comprises one or more cleaning stations  122  and/or spraying stations  124  and/or flushing stations  126 . 
     The cleaning station  122 , the spraying station  124 , and/or the flushing station  126  are arranged and/or formed—in particular, with respect to the main conveying direction  116 —in front of one or more treatment stations  114 , between several treatment stations  114 , and/or after one or more treatment stations  114 . 
     After the treatment of the workpieces  102 , the same can be conveyed further by means of a removal station  128 . 
     The removal station  128  in particular forms a combining device  130  for combining the workpieces  102  treated on the different treatment units  106  and for the joint further conveying of the same. 
     In the first embodiment of the treatment plant  100  shown in  FIGS.  1  through  6   , the workpieces  102  can be conveyed in particular in a transverse orientation  132 , and in particular can be conveyed along the main conveying direction  116  in a transverse orientation  132 . 
     Into the treatment stations  114 , which in particular laterally adjoin the main conveying path  118 , the vehicle bodies  104  are preferably introduced along a longitudinal axis of the same. 
     As can be seen in particular in  FIG.  3   , a first treatment station  114   a , a second treatment station  114   b , a third treatment station  114   c , and a fourth treatment station  114   d  are provided in each treatment unit  106 , for example. 
     A fluid tank  134  is preferably assigned to each treatment station  114   a ,  114   b ,  114   c ,  114   d.    
     Moreover, each treatment station  114   a ,  114   b ,  114   c ,  114   d  comprises one or more treatment containers  136  for performing a workpiece treatment. 
     The workpieces  102  can be treated in particular with one or more fluids formed as liquids. 
     During the conveying of the workpieces  102 , it is thus possible in particular for liquid to drip off the same. 
     The conveying device  110 , and in particular the main conveying path  118 , therefore preferably comprises one or more collecting elements  138 , which are designed, for example, as collecting troughs and serve to accommodate liquid dripping down from the workpieces  102 . 
     The collecting elements  138  are in particular integrated into a fluid guide, to be described, of the treatment plant  100  in order to be able to reuse or discharge the liquid collected therewith. 
     As is apparent in particular in  FIG.  6   , each treatment station  114  comprises a fluid tank  134 , which is arranged, for example, above a treatment container  136  and is, for example, a liquid tank. 
     The fluid tank  134  and the treatment container  136  are connected to one another by means of a fluid guide  140  or form a part of a fluid guide  140 . 
     The fluid guide  140  in particular comprises a fluid line, e.g., a feed line  142 , by means of which the fluid from the fluid tank  134  can be introduced into the treatment container  136 . 
     By means of a valve device  144 , the feeding can in particular be controlled and/or regulated with regard to the volume flow. 
     The feed line  142  in particular opens in a bottom region  146  into a treatment chamber  148  within the treatment container  136 . 
     The treatment container  136  in particular comprises a closed bottom wall  150 , a closed top wall  152 , two closed sides walls  154 , and a closed front wall (further side wall)  156 . 
     The further front wall  156 , i.e., the further and thus fourth side wall  154 , is preferably provided with an access opening  158 . 
     The access opening  158  preferably extends over at least approximately 60%, preferably at least approximately 80%, and in particular at least approximately 95%, of a total area of the front wall  156 . 
     The access opening  158  in particular serves to introduce the workpieces  102  and/or to discharge the workpieces  102 . 
     The access opening  158  is thus in particular an introduction opening  160  and/or a discharge opening  162 . 
     The access opening  158  can preferably be closed by means of a closing device  164  of the treatment station  114 . 
     The closing device  164  in particular comprises a closing element  166  which can be selectively brought into an open position or into a closed position by means of a closing drive  168 . 
     The closing drive  168  is or comprises, for example, a lifting device  170 . 
     In particular, the closing drive  168  comprises an electric motor and a spindle drive for driving, and in particular raising and lowering, the closing element  166 . 
     The closing element  166  can thereby preferably be moved in front of the access opening  158  or raised above the same. 
     The closing element  166  in particular forms a lock gate  172  of the closing device  164 . 
     For guiding the closing element  166  and/or for supporting a fluid pressure acting on the closing element  166  during a flooding process in the treatment container  136 , a guiding device  174  is preferably, on the treatment container  136 , provided for the displaceable accommodation and guidance of the closing element  166 . 
     The closing device  164  is preferably designed to be self-locking and/or self-sealing in order to ensure fluid tightness of the treatment container  136 . 
     A conveying device  110  or at least a section of a conveying device  110  is in particular arranged and/or formed in the bottom region  146  of the treatment container  136 . 
     In particular, a guiding device  176  of the conveying device  110  for the load-bearing accommodation of the workpieces  102  is arranged and/or formed in the bottom region  146 . 
     By means of this guiding device  176 , accommodation devices  178 , e.g., skids  180  for accommodating workpieces  102  designed as vehicle bodies  104 , can in particular be accommodated and can be introduced into the treatment chamber  148  and/or discharged from the same in an introduction direction  182 , and in particular in a horizontal direction  184 . The conveying device  110  preferably has only the guiding device  176  within the treatment container  136 . Drive components of the conveying device  110  are preferably arranged and/or formed outside the treatment container  136 . 
     In order to perform a flooding process in the treatment container  136 , the fluid can be fed via the feed line  142 . By means of a discharge line  186 , the fluid can preferably be discharged from the treatment container  136 . 
     In order to be able to have fluid flow completely around the workpiece  102  or to let the workpiece  102  completely sink into the fluid, the interior (treatment chamber  148 ) of the treatment container  136  must be filled with fluid to a certain filling-height. 
     In order to minimize the quantity of fluid required for this purpose, one or more installation elements  188 , and in particular installation elements  188  designed as displacement elements  190 , are preferably provided. 
     A displacement element  190  serves in particular to minimize the free space in the treatment chamber  148 , which would unnecessarily have to be filled with fluid. 
     In this case, the displacement elements  190  are in particular adapted at least in sections to a shape of the workpiece  102  to be treated; for example, a shape, facing the workpiece  102 , at least approximately follows a shape of a front region of the workpiece  102  (see  FIG.  6   ). 
     Moreover, in the region of the conveying device  110 , at least one installation element  188  designed as a displacement element  190  may be provided in order to minimize the free spaces in the bottom region  146 . 
     For example, one or more support elements  192  may be provided as further installation elements  188 . 
     A support element  192  may, for example, support the workpiece  102  at least in regions in order to secure it, and in particular to support it, against a movement and/or deformation during the flooding process. As a result, an accelerated flooding of the treatment chamber  148  can preferably be realized. 
     After flooding has taken place, the respective support element  192  is preferably removed from the workpiece  102  in order to ensure complete wetting of and/or flow around the workpiece  102  with fluid. 
     Furthermore, one or more displacement elements  190  may be moved before, during, and/or after the flooding process in order to enhance the flooding process. 
     In particular when the fluid tends towards foam formation during inflow of the same, it may be provided that it flow into the treatment chamber  148  in an inflow region  194  below a permanent and/or minimum fluid level. This inflow region  194  is in particular arranged below the access opening  158  in order to avoid undesired outflow of fluid when the closing device  164  is opened. 
     As can be seen in particular in  FIG.  4   , the treatment stations  114  of distinct treatment units  106  can be connected to one another by means of one or more common fluid guides  140 . 
     It may in particular be provided that, by means of the fluid guide  140 , fluid from a fluid tank  134  of an upper—with respect to the direction of gravity g—treatment unit  106  first be guided into a treatment container  136  of this upper treatment unit  106 , subsequently be introduced from the treatment container  136  into a fluid tank  134  of a lower—with respect to the direction of gravity g—treatment unit  106 , and thus be available for use for a flooding process in a treatment container  136  of the lower treatment unit  106 . 
     Subsequently, the fluid can be guided, for example, into a counter tank  196 , arranged below the lower treatment unit  106 , from where the fluid is guided, for example, by means of a pump device  198  and/or after cleaning thereof by means of a cleaning device  200  back into the fluid tank  134  of the upper treatment unit  106 . 
     Such fluid guides  140  can in principle be provided for any type of treatment station  114  of in each case several treatment units  106 . 
     A second embodiment of a treatment plant  100  shown in  FIGS.  7  through  12    differs from the first embodiment shown in  FIGS.  1  through  6    essentially in that the workpieces  102  are conveyed in a longitudinal orientation  202  along the main conveying direction  116  through the treatment containers  136  of the treatment stations  114 . 
     As can be seen in particular in  FIGS.  11  and  12   , the treatment containers  136  of the treatment stations  114  are provided for this purpose on both sides with access openings  158 , wherein an access opening  158  forms the introduction opening  160 , and the further access opening  158  forms the discharge opening  162 . 
     In this case, the workpieces  102  can be conveyed through the treatment chambers  148  in particular in the introduction direction  182 . 
     Both access openings  158  are to be closed for performing a flooding process in the treatment chambers  148 . For this purpose, a separate closing device  164  is assigned to each access opening  158 . 
     In the embodiment shown in  FIGS.  7  through  12   , the treatment stations  114  arranged one behind the other form treatment lines, for example. 
     Each treatment line may be a treatment unit  106 , so that, for example, two treatment units  106 , respectively, can be arranged on the same level. 
     The fluid guides  140  may be assigned to the treatment stations  114  on the same level or on different levels (see in particular  FIG.  10   ) in order to enable optimized fluid guidance and/or fluid utilization. 
     Otherwise, the second embodiment of the treatment plant  100  shown in  FIGS.  7  through  12    corresponds with regard to structure and function to the first embodiment shown in  FIGS.  1  through  6   , so that reference is made, in this respect, to the above description thereof. 
     A third embodiment of a treatment plant  100  shown in  FIG.  13    differs from the first embodiment shown in  FIGS.  1  through  6    essentially in that the treatment stations  114  are arranged on both sides of the main conveying path  118 . 
     By means of the conveying device  110 , the workpieces  102  can thus be introduced selectively to the right or left of the main conveying path  118  into the treatment chambers  148  of the treatment stations  114  in order to perform the workpiece treatment. As a result, the main conveying path  118  can be particularly short and compact. 
     By means of a turntable  204 , an orientation of the workpieces  102  can be changed in particular in front of or at the feeding station  108  in order to enable an optimized feeding to the main conveying path  118 . 
     A fluid guide  140  (not shown in  FIG.  13   ) is, for example, provided in the third embodiment shown in  FIG.  13    in such a way that the treatment stations  114  arranged opposite one another with respect to the main conveying path  118  always have a common fluid guide  114 , and thus serve to perform the same treatment step. 
     The third embodiment of the treatment plant  100  shown in  FIG.  13    can form a treatment unit  106 , which can of course be provided several times, and in particular one above the other. 
     Otherwise, the third embodiment of the treatment plant  100  shown in  FIG.  13    corresponds with regard to structure and function to the first embodiment shown in  FIGS.  1  through  6   , so that reference is made, in this respect, to the above description thereof. 
     A fourth embodiment of a treatment plant  100  shown in  FIG.  14    differs from the first embodiment shown in  FIGS.  1  through  6    essentially in that a removal station  128  which is arranged centrally with respect to the main conveying path  118  or with respect to two main conveying paths  118  is provided. The workpieces  102  are thus removed centrally from the treatment unit  106  and are accordingly fed to the main conveying path  118  at ends  206  facing away from one another. For this purpose, a feeding station  108  is provided at each of the ends  206 . 
     The workpieces  102  are thus conveyed towards one another by the two feeding stations  108  and are discharged and conveyed further by means of the common removal station  128 . 
     Otherwise, the fourth embodiment of the treatment plant  100  shown in  FIG.  14    corresponds with regard to structure and function to the first embodiment shown in  FIGS.  1  through  6   , so that reference is made, in this respect, to the above description thereof. 
     A fifth embodiment of a treatment plant  100  shown in  FIG.  15    differs from the second embodiment shown in  FIGS.  7  through  12    essentially in that a treatment unit  106  forming a treatment line comprises several treatment stations  114  that can be populated in parallel to one another. 
     A main conveying path  118  of the conveying device  110  of the treatment plant  100  preferably comprises for this purpose one or more distributor devices  112  in order to distribute the workpieces  102 , fed via a feeding station  108 , to treatment stations  114  arranged in parallel to one another. 
     The distributor device  112  is in particular a transverse displacement device  208 . 
     A further transverse displacement device  208  preferably forms a combining device  130 , which is arranged after the treatment stations  114  and serves to combine the workpieces  102  and further convey them together. In particular, the workpieces  102  can then be fed to a flushing station  126  or spraying station  124 . 
     One or more further distributor devices  112 , treatment stations  114  arranged in parallel to one another, and/or combining devices  130  can then be provided for further treatment steps of the treatment plant  100 . 
     In the fifth embodiment of the treatment plant shown in  FIG.  15   , two such treatment steps are provided with treatment stations  114  each arranged in parallel with one another. 
     Otherwise, the fifth embodiment of the treatment plant  100  shown in  FIG.  15    corresponds with regard to structure and function to the second embodiment shown in  FIGS.  7  through  12   , so that reference is made, in this respect, to the above description thereof. 
     A sixth embodiment of a treatment plant  100  shown in  FIGS.  16  through  18    differs from the second embodiment shown in  FIGS.  7  through  12    essentially in that a workpiece exchange  102  is possible between two treatment units  106  arranged on one level. 
     For this purpose, the conveying devices  110  of the treatment units  106  comprise one or more transfer stations  210 , by means of which the workpieces  102  can be transferred from the conveying device  110  of the one treatment unit  106  to the conveying device  110  of the further treatment unit  106 . 
     In particular, the workpieces  102  can be transferred from a main conveying path  118  of the one treatment unit  106  to the main conveying path  118  of the further treatment unit  106  by means of a transfer station  210 . 
     As a result, treatment stations  114  to be maintained and/or cleaned and/or repaired can be bypassed in an isolated manner, without having to temporarily stop the entire treatment unit  106 . 
     As can also be seen in particular in  FIG.  17   , in the sixth embodiment of the treatment plant  100  shown in  FIGS.  16  through  18   , a workpiece treatment by dipping the workpieces is further provided in addition to the workpiece treatment by flooding. 
     For this purpose, one or more treatment containers  136  designed as dip tanks  212  are provided, wherein the associated treatment stations  114  serve to perform dipping processes. 
     Such dip tanks  212  serve, in particular, to coat the workpieces  102 , e.g., the painting of the same in the context of a cathodic dip coating. 
     In particular, several such dip tanks  212  can be arranged in succession along the main conveying direction  116 , e.g., after one or more treatment stations  114  for performing flooding processes for the workpiece pretreatment. 
     As can be seen in particular in  FIG.  17   , it may be provided that several fluid tanks  134  and/or several counter tanks  196  be assigned to a treatment station  114  in order to be able to perform different treatment steps in the same treatment chamber  148 . 
     The treatment chamber  148  can then in particular be alternately or successively flooded with different fluids, and in particular treatment liquids. 
     As can be seen in particular in  FIG.  18   , folding elements  214  could also be provided as closing elements  166 , instead of closing elements  166  designed as lock gates  172 . 
     The folding elements  214  are in particular arranged so as to be pivotable about a substantially horizontal axis and can be brought into a vertical orientation in order to close the respective access opening  158 , and into a horizontal orientation in order to open the access opening  158  (both states are shown in  FIG.  18   ). 
     The closing elements  166  may, for example, bring about only a partial coverage of the access opening  158 , or else a complete coverage of the access opening  158 . In the embodiment shown in  FIG.  18   , only a partial coverage of the access opening  158  is provided, so that the treatment station  114  according to  FIG.  18    is suitable only for a partial flooding process. 
     The dimensioning of the closing element  166  can be selected according to the required filling-level for performing the workpiece treatment. 
     At least one closing element  166 , and in particular at least one folding element  214 , can comprise or form, for example, one or more conveying elements of a conveying device  110 , and in particular one or more guiding elements of a guiding device  176  of a conveying device  110  (not shown in the figures). The closing element  166  then in particular serves to guide the one or more workpieces  102 , during the introduction of the same, in a load-bearing manner across the closing element  166  into the treatment chamber  148 . 
     Otherwise, the embodiment of the treatment plant  100  shown in  FIGS.  16  through  18    corresponds with regard to structure and function to the second embodiment shown in  FIGS.  7  through  12   , so that reference is made, in this respect, to the above description thereof. 
       FIGS.  19  and  20    show a further alternative embodiment of a treatment station  114 , which substantially corresponds to the embodiment of a treatment station  114  shown in  FIG.  18   , but comprises, below the treatment chamber  148 , a collecting container  218 , which is designed, for example, as a collecting funnel  216  by means of which the fluid to be discharged from the treatment chamber  148  can be collected. 
     The collecting container  218  thus in particular forms a counter tank  196  of a fluid guide  140 . 
     Otherwise, the embodiment of a treatment station  114  shown in  FIGS.  19  and  20    corresponds with regard to structure and function to the embodiment shown in  FIG.  18   , so that reference is made, in this respect, to the above description thereof. 
       FIGS.  21  through  27    show an optional development of the treatment station  114 . Here, it is provided that the conveying device  110  comprise one or more drive units  220  which act on a guide path section  222  of the conveying device  110  from outside the treatment chamber  148 . A drive unit  220  may, for example, be an electric motor or comprise an electric motor. 
     The one or more drive units  220  are preferably coupled purely mechanically to the guide path section  222 . In particular, it may be provided that a coupling device  224  produce a mechanical connection between the one or more drive units  220 , on the one hand, and the guide path section  222  of the conveying device  110  on the other. By means of the one or more drive units  220  arranged outside the treatment chamber  148 , a workpiece  102  guided within the treatment chamber  148  on the guide path section  222  can then in particular be driven, and, preferably, linearly moved, e.g., introduced into the treatment chamber  148  or discharged from the same. 
     It may be favorable if the one or more drive units  220  are arranged above a maximum filling-level or above a maximum filling-height of the treatment chamber  148 , and/or on an outer side  226  of a side wall  228  of a treatment container  136  surrounding the treatment chamber  148 . 
     Preferably, one or more drive units  220  are arranged on an end region of the treatment container  136 , which end region faces away from an access opening  158  of the treatment container  136 , and/or in a region, close to the ceiling, of a side wall  228  of the treatment container  136 . 
     The coupling device  224  is preferably guided through the side wall  228 , and preferably at the height of the one or more drive units  220 . A through-opening  230  for guiding the coupling device  224  is preferably arranged and/or formed above a maximum filling-level or above a maximum filling-height of the treatment chamber  148 . A coupling element  232 , guided through the side wall  228 , of the coupling device  224  is preferably a rotating shaft or coupling shaft. 
     The rotating shaft or coupling shaft is preferably connected by means of a pulling element  234 , and in particular by means of a belt and/or a chain, e.g., a duplex chain, to a further rotating shaft or coupling shaft which is arranged in the region of the guide path section  222  and ultimately acts directly or indirectly on the workpiece  102  in order to drive the same. The pulling element  234  can in particular be tensioned by means of one or two tensioning elements  236 , and in particular tensioning rollers. 
     Furthermore, it is provided in the embodiment shown in  FIGS.  21  through  27    that the treatment station  114  comprise one or more sensor devices  238  which enable a state and/or position detection within the treatment chamber  148  from outside the treatment chamber  148 . For example, a correct positioning of a workpiece  102  within the treatment chamber  148  can be determined or monitored by means of a sensor device  238 . 
     The one or more sensor devices  238  preferably each comprise one or more sensor elements  240  which are arranged outside the treatment chamber  148  and preferably coupled purely mechanically to one or more transducer elements  242  within the treatment chamber  148  (see in particular  FIGS.  25  through  27   ). In particular, it may be provided that a coupling device  224  produce a mechanical connection between the one or more sensor elements  240 , on the one hand, and the one or more transducer elements  242  on the other. By means of the one or more sensor elements  240  arranged outside the treatment chamber  148 , a workpiece  102  arranged within the treatment chamber  148  can then in particular be detected, and preferably its position determined or monitored. 
     It may be favorable if the one or more sensor elements  240  are arranged above a maximum filling-level or above a maximum filling-height of the treatment chamber  148 , and/or on an outer side  226  of a side wall  228  of the treatment container  136  surrounding the treatment chamber  148 . 
     Preferably, one or more sensor elements  240  are arranged in a region, close to the ceiling, of a side wall  228  of the treatment container  136 . 
     The coupling device  224  of the sensor device  238  is preferably guided through the side wall  228 , and preferably at the height of the one or more sensor elements  240 . A through-opening  230  for guiding the coupling device  224  is preferably arranged and/or formed above a maximum filling-level or a maximum filling-height of the treatment chamber  148 . A coupling element  232 , guided through the side wall  228 , of the coupling device  224  is preferably a rotating shaft or coupling shaft. 
     The rotating shaft or coupling shaft is preferably connected by means of a pulling element or pressure element, and in particular by means of a coupling rod  244 , to a further rotating shaft or coupling shaft, which is arranged, for example, in a bottom region and/or in the region of a guide path section  222  and is connected to a transducer element  242 . By actuating the transducer element  242 , e.g., by rotating the transducer element  242 , a rotation of the further rotating shaft or coupling shaft, and thereby a—for example—vertical displacement of the coupling rod  244 , and thereby a rotation of the (upper) rotating shaft or coupling shaft, can preferably be brought about, wherein the (upper) rotating shaft or coupling shaft guided out of the treatment chamber  148  finally carries out or brings about a movement which can be detected by means of the at least one sensor element  240 . By purely mechanical actuation of the coupling device  224 , a change in the orientation or another movement of the transducer element  242  can thus be detected by means of the one or more sensor elements  240 . 
     Preferred embodiments are as follows: 
     1. Treatment station ( 114 ) for treating workpieces ( 102 ), and in particular for cleaning and/or coating vehicle bodies ( 104 ), wherein the treatment station ( 114 ) comprises a treatment container ( 136 ) surrounding a treatment chamber ( 148 ) for accommodating the workpieces ( 102 ). 
     2. Treatment station ( 114 ) according to embodiment 1, characterized in that the treatment chamber ( 148 ) can be flooded with a fluid, wherein the treatment container ( 136 ) comprises at least one access opening ( 158 ) for introducing the workpieces ( 102 ) into the treatment chamber ( 148 ) and/or for discharging the workpieces ( 102 ) from the treatment chamber ( 148 ), wherein the treatment container ( 136 ) comprises a closing device ( 164 ) for selectively closing and opening the at least one access opening ( 158 ). 
     3. Treatment station ( 114 ) according to embodiment 2, characterized in that the at least one access opening ( 158 ) is arranged and/or formed in one or more side walls ( 154 ) of the treatment container ( 136 ), and in particular in one or more front walls ( 156 ) of the treatment container ( 136 ). 
     4. Treatment station ( 114 ) according to one of embodiments 2 or 3, characterized in that the closing device ( 164 ) serves for the fluid-tight closing of the at least one access opening ( 158 ). 
     5. Treatment station ( 114 ) according to one of embodiments 2 through 4, characterized in that the closing device ( 164 ) comprises a lifting device ( 170 ) for raising and lowering a closing element ( 166 ) of the closing device ( 164 ), and in particular for raising the closing element ( 166 ) in order to bring it into an open position, and for lowering the closing element ( 166 ) in order to bring it into a closed position. 
     6. Treatment station ( 114 ) according to one of embodiments 2 through 5, characterized in that the closing device ( 164 ) comprises a pivoting device for pivoting a closing element ( 166 ) of the closing device ( 164 ), wherein the closing element ( 166 ) can in particular be pivoted about an at least approximately horizontal pivot axis. 
     7. Treatment station ( 114 ) according to one of embodiments 2 through 6, characterized in that the closing device ( 164 ) comprises a closing drive ( 168 ) for automatically moving a closing element ( 166 ) of the closing device ( 164 ). 
     8. Treatment station ( 114 ) according to one of embodiments 2 through 7, characterized in that the treatment station ( 114 ) comprises a fluid tank ( 134 ) for accommodating a fluid, and in particular a treatment fluid, wherein the fluid can be introduced from the fluid tank ( 134 ) into the treatment chamber ( 148 ) by means of a fluid guide ( 140 ) in order to flood the treatment chamber ( 148 ) and/or wherein the fluid can be guided from the treatment chamber ( 148 ) back into the fluid tank ( 134 ) by means of the fluid guide ( 140 ) in order to empty the treatment chamber ( 148 ). 
     9. Treatment station ( 114 ) according to one of embodiments 2 through 8, characterized in that the treatment station ( 114 ) comprises a conveying device ( 110 ) for conveying the workpieces ( 102 ), and in particular for introducing the workpieces ( 102 ) into the treatment chamber ( 148 ) and/or for discharging the workpieces ( 102 ) from the treatment chamber ( 148 ). 
     10. Treatment station ( 114 ) according to embodiment 9, characterized in that the workpieces ( 102 ) can be moved, and in particular introduced into the treatment chamber ( 148 ) and/or discharged from the treatment chamber ( 148 ), by means of the conveying device ( 110 ) along a horizontal plane. 
     11. Treatment station ( 114 ) according to one of embodiments 9 or 10, characterized in that the conveying device ( 110 ) comprises one or more drive units for moving the workpieces ( 102 ), wherein the drive units, and in particular all drive units of the conveying device ( 110 ), are arranged outside the treatment chamber ( 148 ), at least during the performance of a workpiece treatment. 
     12. Treatment station ( 114 ) according to one of embodiments 9 through 11, characterized in that the conveying device ( 110 ) comprises a guiding device ( 176 ) for the load-bearing accommodation of the workpieces ( 102 ), wherein the guiding device ( 176 ) extends from outside the treatment chamber ( 148 ) into the treatment chamber ( 148 ), and in particular through at least one access opening ( 158 ). 
     13. Treatment station ( 114 ) according to one of embodiments 9 through 12, characterized in that the conveying device ( 110 ) comprises a guiding device ( 176 ) for the load-bearing accommodation of the workpieces ( 102 ), wherein the guiding device ( 176 ) comprises both at least one guide path section arranged outside the treatment chamber ( 148 ) and at least one guide path section arranged within the treatment chamber ( 148 ), wherein the workpieces ( 102 ) can be transferred through the access opening ( 158 ) from a guide path section arranged outside the treatment chamber ( 148 ) to a guide path section arranged within the treatment chamber ( 148 ), and in particular by driving the workpieces ( 102 ) by means of one or more drive units. 
     14. Treatment station ( 114 ) according to one of embodiments 9 through 13, characterized in that the conveying device ( 110 ) comprises a locking device for locking the workpieces ( 102 ) in a treatment position within the treatment chamber ( 148 ), wherein a movement of the workpiece ( 102 ) counter to the direction of gravity (g) can in particular be blocked by means of the locking device. 
     15. Treatment station ( 114 ) according to one of embodiments 9 through 14, characterized in that the conveying device ( 110 ) comprises a movement device for tilting and/or turning the workpieces ( 102 ), and in particular for temporarily changing the position relative to an at least approximately horizontal normal position. 
     16. Treatment station ( 114 ) according to one of embodiments 1 through 15, wherein the treatment chamber ( 148 ) can be flooded with a fluid, wherein the treatment station ( 114 ) comprises one or more installation elements ( 188 ) which are arranged or can be arranged in the treatment chamber ( 148 ) for supporting a flooding process. 
     17. Treatment station ( 114 ) according to embodiment 16, characterized in that one or more installation elements ( 188 ) are adapted or can be adapted with regard to their position and/or with regard to their function and/or with regard to their shape to the workpieces ( 102 ) to be treated. 
     18. Treatment station ( 114 ) according to one of embodiments 16 or 17, characterized in that one or more installation elements ( 188 ) are designed as displacement elements ( 190 ), by means of which free spaces within the treatment chamber ( 148 ) can in particular be filled which remain free during the flooding process without the respective installation element ( 188 ) and would therefore need to be filled with fluid. 
     19. Treatment station ( 114 ) according to embodiment 18, characterized in that one or more displacement elements ( 190 ) are adapted or can be adapted at least in sections or in regions to a shape of the workpiece ( 102 ) to be treated. 
     20. Treatment station ( 114 ) according to one of embodiments 18 or 19, characterized in that one or more displacement elements ( 190 ) have a hollow body which can be filled and/or kept filled and/or emptied independently of the flooding process. 
     21. Treatment station ( 114 ) according to one of embodiments 18 through 20, characterized in that one or more displacement elements ( 190 ) are designed to be reshapeable and/or resizable, e.g., inflatable, and that the treatment station ( 114 ) comprises a variation device for varying the shape and/or size of the one or more displacement elements ( 190 ), and in particular for reducing a free space, within the treatment chamber ( 148 ), to be flooded for a treatment process. 
     22. Treatment station ( 114 ) according to one of embodiments 18 through 21, characterized in that one or more displacement elements ( 190 ) fill one or more free spaces in the region of a conveying device ( 110 ) of the treatment station ( 114 ). 
     23. Treatment station ( 114 ) according to one of embodiments 18 through 22, characterized in that one or more displacement elements ( 190 ) fill a free space above a workpiece ( 102 ) designed as a vehicle body ( 104 ), and in particular above a vehicle front and/or above a vehicle rear of the vehicle body ( 104 ). 
     24. Treatment station ( 114 ) according to one of embodiments 16 through 23, characterized in that one or more installation elements ( 188 ) are designed as support elements ( 192 ) for supporting a workpiece ( 102 ) to be treated during the flooding process. 
     25. Treatment station ( 114 ) according to embodiment 24, characterized in that one or more of the support elements ( 192 ) respectively have a support section which serves for the direct abutment on the workpiece ( 102 ) for supporting the same. 
     26. Treatment station ( 114 ) according to one of embodiments 16 through 25, characterized in that one or more installation elements ( 188 ) are designed as temperature-control elements for controlling the temperature of the treatment container ( 136 ) and/or of the fluid. 
     27. Treatment station ( 114 ) according to one of embodiments 16 through 26, characterized in that one or more installation elements ( 188 ) are arranged or can be arranged temporarily, for one or more treatment processes and/or flooding processes, or permanently in the treatment chamber ( 148 ). 
     28. Treatment station ( 114 ) according to one of embodiments 16 through 27, characterized in that one or more installation elements ( 188 ) for performing a flooding process can automatically be introduced into a free space of the treatment chamber ( 148 ) that is to be flooded and, after the flooding process has been performed, can be automatically removed from the free space to be flooded. 
     29. Treatment station ( 114 ) according to embodiment 28, characterized in that one or more installation elements ( 188 ) are arranged or can be arranged on a closing element ( 166 ) for closing an access opening ( 158 ) of the treatment container ( 136 ), and that, by moving the closing element ( 166 ) into a closed position, the one or more installation elements ( 188 ) can be brought into a position in which they support the flooding process. 
     30. Treatment station ( 114 ) according to one of embodiments 1 through 29, characterized in that the treatment station ( 114 ) comprises a fluid tank ( 134 ) for accommodating a fluid, and that the treatment station ( 114 ) comprises a fluid guide, by means of which the fluid can be guided 
     a) from the fluid tank ( 134 ) into the treatment container ( 136 ) in order to flood the treatment chamber ( 148 ); and/or 
     b) from the treatment container ( 136 ) into the fluid tank ( 134 ) in order to empty the treatment chamber ( 148 ). 
     31. Treatment station ( 114 ) according to embodiment 30, characterized in that the fluid tank ( 134 ) is arranged above the treatment container ( 136 ) with respect to the direction of gravity (g). 
     32. Treatment station ( 114 ) according to one of embodiments 30 or 31, characterized in that the fluid guide ( 140 ) comprises a pump device ( 198 ) by means of which the fluid can be pumped from the treatment chamber ( 148 ) into the fluid tank ( 134 ). 
     33. Treatment station ( 114 ) according to one of embodiments 30 through 32, characterized in that the fluid guide ( 140 ) comprises a fluid line, designed as a feed line ( 142 ), by means of which the fluid can be fed to the treatment chamber ( 148 ), wherein the feed line ( 142 ) opens into the treatment container ( 136 ) in a bottom region ( 146 ) of the same. 
     34. Treatment station ( 114 ) according to embodiment 33, characterized in that the treatment container ( 136 ) comprises an inflow region ( 194 ), which is in particular located below an access opening ( 158 ) of the treatment container ( 136 ) and is filled with fluid even in an emptied state of the treatment container ( 136 ) provided for exchanging a workpiece ( 102 ), wherein the feed line ( 142 ) opens into the inflow region ( 194 ). 
     35. Treatment station ( 114 ) according to one of embodiments 30 through 34, characterized in that the fluid guide ( 140 ) comprises a cleaning device ( 200 ) for cleaning the fluid, wherein the cleaning device ( 200 ) is in particular arranged in a return line of the fluid guide ( 140 ) for returning the fluid into the fluid tank ( 134 ). 
     36. Treatment station ( 114 ) according to one of embodiments 30 through 35, characterized in that the treatment station ( 114 ) comprises a control device, by means of which a flooding process in the treatment chamber ( 148 ) can be controlled and/or regulated—in particular, by controlling and/or regulating a valve device ( 144 ) for opening and closing a feed line ( 142 ) for feeding fluid to the treatment chamber ( 148 ). 
     37. Treatment station ( 114 ) according to embodiment 36, characterized in that one or more workpiece parameters, and in particular a geometry and/or size and/or position of the respective workpiece ( 102 ) within the treatment chamber ( 148 ), are taken into account in the control and/or regulation of the flooding process. 
     38. Treatment station ( 114 ) according to one of embodiments 36 or 37, characterized in that the flooding process can be controlled by means of the control device in such a way that a filling speed and/or a rate of change of the fill-level of the fluid in the treatment chamber ( 148 ) during the flooding is varied, and in particular adapted to local stability differences of the workpieces ( 102 ). 
     39. Treatment station ( 114 ) according to one of embodiments 36 through 38, characterized in that the treatment station ( 114 ) comprises one or more measuring devices by means of which a volume flow of the fluid flowing into the treatment chamber ( 148 ) and/or a fill-level or filling-level within the treatment chamber ( 148 ) and/or a fill-level or filling-level in the fluid tank ( 134 ) can be determined, wherein one or more measured values of the one or more measuring devices are taken into account in the control and/or regulation of the flooding process. 
     40. Treatment station ( 114 ) according to one of embodiments 30 through 39, characterized in that the treatment station ( 114 ) has a counter tank ( 196 ) which is in particular arranged below the treatment chamber ( 148 ) with respect to the direction of gravity (g) and to which the fluid to be discharged from the treatment chamber ( 148 ) can be fed. 
     41. Treatment station ( 114 ) according to embodiment 40, characterized in that the fluid flows from the fluid tank ( 134 ) into the treatment chamber ( 148 ) and/or from the treatment chamber ( 148 ) into the counter tank ( 196 ) by using only gravity (g). 
     42. Treatment station ( 114 ) according to one of embodiments 30 through 41, characterized in that the treatment station ( 114 ) comprises two or more than two treatment chambers ( 148 ), and in particular two or more than two treatment containers ( 136 ) with one treatment chamber ( 148 ) each, wherein a common fluid tank ( 134 ) is provided for feeding the fluid to the two or more than two treatment chambers ( 148 ). 
     43. Treatment station ( 114 ) according to one of embodiments 30 through 42, characterized in that the treatment station ( 114 ) comprises a flushing device for flushing and/or cleaning the treatment chamber ( 148 ), wherein a flushing medium can be introduced, and in particular sprayed, into the treatment chamber ( 148 ) and removed from the same by means of the flushing device—in particular, independently of the fluid, independently of the fluid tank ( 134 ), and/or independently of a counter tank ( 196 ). 
     44. Treatment plant ( 100 ) comprising one or more treatment stations ( 114 )—in particular, according to one of embodiments 1 through 43—characterized in that each treatment station ( 114 ) comprises at least one treatment container ( 136 ) which surrounds a treatment chamber ( 148 ) for accommodating workpieces ( 102 ), wherein each treatment station ( 114 ) separately, or one or more treatment stations ( 114 ) jointly, comprise a fluid tank ( 134 ) for accommodating a fluid, and wherein the treatment stations ( 114 ) comprise a fluid guide ( 140 ), by means of which the fluid can be guided 
     a) from the fluid tank ( 134 ) into the respective treatment container ( 136 ) in order to flood one or more treatment chambers ( 148 ); and/or 
     b) from the respective treatment container ( 136 ) into the fluid tank ( 134 ) in order to empty the treatment chambers ( 148 ). 
     45. Treatment plant ( 100 ) according to embodiment 44, characterized in that the treatment plant ( 100 ) comprises several first treatment stations ( 114 ) for performing a first treatment step and several second treatment stations ( 114 ) for performing a second treatment step, wherein one or more first treatment stations ( 114 ) and one or more second treatment stations ( 114 ) respectively are part of or form a treatment unit ( 106 ) of the treatment plant ( 100 ) that is passed through by the workpieces ( 102 ) in order to perform the treatment steps. 
     46. Treatment plant ( 100 ) according to embodiment 45, characterized in that the treatment plant ( 100 ) comprises several treatment units ( 106 ), each of which comprises one or more first treatment stations ( 114 ) and one or more second treatment stations ( 114 ) and which, in particular, form distinct treatment lines of the treatment plant ( 100 ), a) wherein one or more first treatment stations ( 114 ) of distinct treatment units ( 106 ) have a common fluid guide ( 140 ) and/or a common fluid tank ( 134 ); and/or b) wherein one or more second treatment stations ( 114 ) of distinct treatment units ( 106 ) have a common fluid guide ( 140 ) and/or a common fluid tank ( 134 ). 
     47. Treatment plant ( 100 ) according to one of embodiments 44 through 46, characterized in that a fluid, and in particular a first treatment fluid, can be fed, by means of the fluid guide, first a) to one or more treatment chambers ( 148 ) of one or more treatment stations ( 114 ), and in particular first treatment stations ( 114 ), of a first treatment unit ( 106 ), and thereafter b) to one or more treatment chambers ( 148 ) of one or more treatment stations ( 114 ), and in particular first treatment stations ( 114 ), of a second treatment unit ( 106 ). 
     48. Treatment plant ( 100 ) according to one of embodiments 44 through 47, characterized in that a fluid, and in particular a second treatment fluid, can be fed, by means of the fluid guide ( 140 ), first a) to one or more treatment chambers ( 148 ) of one or more treatment stations ( 114 ), and in particular second treatment stations ( 114 ), of a first treatment unit ( 106 ), and thereafter b) to one or more treatment chambers ( 148 ) of one or more treatment stations ( 114 ), and in particular second treatment stations ( 114 ), of a second treatment unit ( 106 ). 
     49. Treatment plant ( 100 ) according to one of embodiments 44 through 48, characterized in that the fluid can alternately be fed, by means of the fluid guide ( 140 ), to treatment chambers ( 148 ) of distinct treatment units ( 106 ). 
     50. Treatment plant ( 100 ) according to one of embodiments 44 through 49, characterized in that the fluid guide ( 140 ) is connected to a cleaning device ( 200 ) so that the fluid can in particular be cleaned after removal from one of the treatment chambers ( 148 ) and/or before a new feeding to a further one of the treatment chambers ( 148 ). 
     51. Treatment plant ( 100 ) according to one of embodiments 44 through 50, characterized in that a total quantity of a fluid contained overall in a fluid guide ( 140 ) is at most approximately twice, and in particular at most approximately three times, a quantity of the fluid required for performing a single flooding process in a treatment chamber ( 148 ). 
     52. Treatment plant ( 100 ) according to one of embodiments 44 through 51, characterized in that several, and in particular all, treatment stations ( 114 ) of a treatment unit ( 106 ), and in particular one or more or all first treatment stations ( 114 ) and one or more or all second treatment stations ( 114 ) of a treatment unit ( 106 ), are arranged on a common level of the treatment plant ( 100 ). 
     53. Treatment plant ( 100 ) according to one of embodiments 44 through 52, characterized in that several treatment units ( 106 ) of the treatment plant ( 100 ) are arranged on distinct levels of the treatment plant ( 100 ). 
     54. Treatment plant ( 100 ) according to one of embodiments 44 through 53, characterized in that one or more treatment stations ( 114 ) of distinct treatment units ( 106 ) of the treatment plant ( 100 ), which have a common fluid guide ( 140 ) and/or which serve to perform the same treatment step, are arranged one above the other along the direction of gravity (g). 
     55. Treatment plant ( 100 ) according to one of embodiments 44 through 54, characterized in that the treatment plant ( 100 ) comprises several fluid guides ( 140 ) for guiding distinct treatment fluids, wherein the fluid guides ( 140 ) are assigned to distinct treatment stations ( 114 ) for performing different treatment steps. 
     56. Treatment plant ( 100 )—in particular, according to one of embodiments 44 through 55—comprising: 
     several treatment stations ( 114 ) for treating the workpieces ( 102 ), and in particular for cleaning and/or coating vehicle bodies ( 104 ), 
     wherein one or more treatment stations ( 114 ) respectively comprise at least one treatment container ( 136 ) which surrounds a treatment chamber ( 148 ) for accommodating the workpieces ( 102 ), 
     wherein the treatment plant ( 100 ) comprises a fluid guide ( 140 ) by means of which one or more of the treatment chambers ( 148 ) can selectively be flooded or emptied, 
     wherein the treatment plant ( 100 ) comprises a conveying device ( 110 ) for conveying the workpieces ( 102 ), by means of which, in an emptied state of the one or more treatment chambers ( 148 ), the workpieces ( 102 ) can be introduced into and/or discharged from the same. 
     57. Treatment plant ( 100 ) according to embodiment 56, characterized in that the workpieces ( 102 ) can be moved, and in particular introduced into the treatment chamber ( 148 ) and/or discharged from the treatment chamber ( 148 ), by means of the conveying device ( 110 ) along a horizontal plane. 
     58. Treatment plant ( 100 ) according to one of embodiments 56 or 57, characterized in that the treatment plant ( 100 ) comprises a main conveying path ( 118 ) which extends in a main conveying direction ( 116 ) and along which the workpieces ( 102 ) can be conveyed by means of the conveying device ( 110 ) from a treatment station ( 114 ) to a further treatment station ( 114 ). 
     59. Treatment plant ( 100 ) according to one of embodiments 56 through 58, characterized in that the workpieces ( 102 ) can be conveyed in a transverse orientation ( 132 ) of the same along the main conveying direction ( 116 ) and/or along the main conveying path ( 118 ). 
     60. Treatment plant ( 100 ) according to one of embodiments 56 through 59, characterized in that the workpieces ( 102 ), in a longitudinal orientation ( 202 ) of the same, can be introduced into and/or discharged from one or more treatment chambers ( 148 ). 
     61. Treatment plant ( 100 ) according to one of embodiments 56 through 60, characterized in that the workpieces ( 102 ) can be introduced into the treatment chambers ( 148 ) in an introduction direction ( 182 ), wherein the introduction direction ( 182 ) is transverse, and in particular perpendicular, to a main conveying direction ( 116 ) of the conveying device ( 110 ). 
     62. Treatment plant ( 100 ) according to one of embodiments 56 through 61, characterized in that the treatment plant ( 100 ) comprises several treatment stations ( 114 ) for performing identical treatment steps, wherein two or more such treatment stations ( 114 ) are arranged on opposite sides of a main conveying path ( 118 ) of the conveying device ( 110 ). 
     63. Treatment plant ( 100 ) according to one of embodiments 56 through 62, characterized in that the treatment plant ( 100 ) comprises several treatment stations ( 114 ) for performing identical treatment steps, wherein two or more such treatment stations ( 114 ) are arranged in succession and/or next to one another along a main conveying direction ( 116 ) of the conveying device ( 110 ). 
     64. Treatment plant ( 100 ) according to one of embodiments 56 through 63, characterized in that several treatment stations ( 114 ) form a treatment unit ( 106 ), wherein several, and in particular all, treatment stations ( 114 ) of a treatment unit ( 106 ), and in particular one or more or all first treatment stations ( 114 ) and one or more or all second treatment stations ( 114 ) of a treatment unit ( 106 ), are arranged on a common level of the treatment plant ( 100 ). 
     65. Treatment plant ( 100 ) according to one of embodiments 56 through 64, characterized in that the treatment plant ( 100 ) comprises a main conveying path ( 118 ) which extends in a main conveying direction ( 116 ) and along which the workpieces ( 102 ) can be conveyed by means of the conveying device ( 110 ) from a treatment station ( 114 ) to a further treatment station ( 114 ), wherein the main conveying path ( 118 ) comprises one or more tunnel sections ( 120 ) for housing the main conveying path ( 118 ), wherein one or more tunnel sections ( 120 ), and in particular one or more tunnel sections ( 120 ) arranged along the main conveying direction ( 116 ) between two treatment stations ( 114 ), have a cleaning station ( 122 ) and/or flushing station ( 126 ) and/or spraying station ( 124 ). 
     66. Treatment plant ( 100 ) of one of embodiments 56 through 65, characterized in that the treatment plant ( 100 ) comprises two treatment units ( 106 ) which are arranged on a common level of the treatment plant ( 100 ), wherein main conveying paths ( 118 ) of the conveying devices ( 110 ) of the two treatment units ( 106 ) are oriented in antiparallel to one another and/or are arranged linearly in succession. 
     67. Treatment plant ( 100 ) according to embodiment 66, characterized in that the two treatment units ( 106 ) have a) feeding stations ( 108 ), arranged facing away from one another, for feeding the workpieces ( 102 ), and/or b) removal stations ( 128 ), arranged facing one another, for removing the workpieces ( 102 ), and/or c) a common removal station ( 128 ) for removing the workpieces ( 102 ). 
     68. Treatment plant ( 100 ) according to one of embodiments 56 through 67, characterized in that the conveying device ( 110 ) comprises one or more branching conveyors by means of which the workpieces ( 102 ) 
     a) can be removed from a main conveying path ( 116 ) and can be introduced into one or more treatment chambers ( 148 ); and/or 
     b) can be discharged from one or more treatment chambers ( 148 ) and can be brought back onto the main conveying path ( 116 ). 
     69. Treatment plant ( 100 )—in particular, according to one of embodiments 44 through 68—comprising: 
     several treatment stations ( 114 ) for treating the workpieces ( 102 ), and in particular for cleaning and/or coating vehicle bodies ( 114 ), 
     wherein one or more treatment stations ( 114 ) respectively comprise at least one treatment container ( 136 ) which surrounds a treatment chamber ( 148 ) for accommodating the workpieces ( 102 ), 
     wherein the treatment plant ( 100 ) comprises a fluid guide ( 140 ) by means of which one or more of the treatment chambers ( 148 ) can selectively be flooded or emptied, 
     wherein the treatment plant ( 100 ) comprises a conveying device ( 110 ) for conveying the workpieces ( 102 ), by means of which, in an emptied state of the respective treatment chamber ( 148 ), the workpieces ( 102 ) can be introduced into the same through an access opening ( 158 ) designed as an introduction opening ( 160 ) and by means of which, in an emptied state of the respective treatment chamber ( 148 ), the workpieces ( 102 ) can be discharged from the same through an access opening ( 158 ) designed as a discharge opening ( 162 ), wherein the introduction opening ( 160 ) and the discharge opening ( 162 ) are distinct access openings ( 158 ). 
     70. Treatment plant ( 100 ) according to embodiment 69, characterized in that the workpieces ( 102 ) can be moved, and in particular introduced into the treatment chamber ( 148 ) and/or discharged from the treatment chamber ( 148 ), by means of the conveying device ( 110 ) along a horizontal plane. 
     71. Treatment plant ( 100 ) according to one of embodiments 69 or 70, characterized in that the treatment plant ( 100 ) comprises a main conveying path ( 118 ) which extends in a main conveying direction ( 116 ) and along which the workpieces ( 102 ) can be conveyed by means of the conveying device ( 110 ) from a treatment station ( 114 ) to a further treatment station ( 114 ). 
     72. Treatment plant ( 100 ) according to one of embodiments 69 through 71, characterized in that the workpieces ( 102 ) can be conveyed, in a longitudinal orientation ( 202 ) of the same, along the main conveying direction ( 116 ) and/or along the main conveying path ( 118 ). 
     73. Treatment plant ( 100 ) according to one of embodiments 69 through 72, characterized in that the workpieces ( 102 ), in a longitudinal orientation ( 202 ) of the same, can be conveyed through one or more treatment chambers ( 148 ). 
     74. Treatment plant ( 100 ) according to one of embodiments 69 through 73, characterized in that the conveying device ( 110 ) comprises one or more transfer stations ( 210 ), on which or by means of which the workpieces ( 102 ) can selectively be transferred from a treatment station ( 114 ) to a further treatment station ( 114 ), which follows along a main conveying direction ( 116 ), of the same treatment unit ( 106 ) and/or of a treatment unit ( 106 ) different therefrom of the treatment plant ( 100 ). 
     75. Treatment plant ( 100 ) according to one of embodiments 69 through 74, characterized in that the treatment plant ( 100 ) comprises several treatment stations ( 114 ) for performing identical treatment steps, wherein two or more such treatment stations ( 114 ) are arranged adjacently to one another and/or are parts of treatment units ( 106 ), extending in parallel to one another, or treatment lines of the treatment plant ( 100 ). 
     76. Treatment plant ( 100 ) according to one of embodiments 69 through 75, characterized in that the treatment plant ( 100 ) comprises a main conveying path ( 118 ) which extends in a main conveying direction ( 116 ) and along which the workpieces ( 102 ) can be conveyed by means of the conveying device ( 110 ) from a treatment station ( 114 ) to a further treatment station ( 114 ), wherein the main conveying path ( 118 ) comprises one or more tunnel sections ( 120 ) for housing the main conveying path ( 118 ), wherein one or more tunnel sections ( 120 ), and in particular one or more tunnel sections ( 120 ) arranged along the main conveying direction ( 116 ) between two treatment stations ( 114 ), have a cleaning station ( 122 ) and/or flushing station ( 126 ) and/or spraying station ( 124 ). 
     77. Treatment plant ( 100 ) according to one of embodiments 69 through 76, characterized in that one or more cleaning stations ( 122 ) and/or flushing stations ( 126 ) and/or spraying stations ( 124 ) are arranged or formed on one or more transfer stations ( 210 ). 
     78. Treatment plant ( 100 ) according to one of embodiments 69 through 77, characterized in that the treatment plant ( 100 ) comprises at least two treatment stations ( 114 ) for performing the same treatment process, and in that a distributor device ( 112 ) or a combining device ( 130 ) are arranged in front of and/or after these treatment stations ( 114 ) with respect to a main conveying direction ( 116 ) of the workpieces ( 102 ). 
     79. Treatment plant ( 100 ) according to embodiment 78, characterized in that the distributor device ( 112 ) and/or the combining device ( 130 ) are respectively designed as a transverse displacement device ( 208 ). 
     80. Treatment plant ( 100 ) according to one of embodiments 69 through 79, characterized in that the treatment plant ( 100 ) comprises one or more treatment stations ( 114 ) for performing flooding processes and one or more treatment stations ( 114 ) for performing dipping processes. 
     81. Treatment plant ( 100 ) according to embodiment 80, characterized in that 
     a) the one or more treatment stations ( 114 ) for performing flooding processes are used for pretreating, and in particular cleaning, degreasing, and/or phosphating, the workpieces ( 102 ); and/or 
     b) the one or more treatment stations ( 114 ) for performing dipping processes are used for coating, and in particular painting, the workpieces ( 102 ). 
     82. Method for treating workpieces ( 102 ), and in particular for cleaning and/or coating vehicle bodies ( 104 ), wherein in particular one or more treatment stations ( 114 ) according to one of embodiments 1 through 43 and/or one or more treatment plants ( 100 ) according to one of embodiments 44 through 81 are used. 
     83. Method—in particular, according to embodiment 82—wherein the method comprises the following:
         introducing a workpiece ( 102 ) into a treatment chamber ( 148 ) of a treatment container ( 136 );   flooding the treatment chamber ( 148 ) with a fluid for performing a workpiece treatment, wherein the fluid is guided       

     a) from the fluid tank ( 134 ) into the treatment container ( 136 ) in order to flood the treatment chamber ( 148 ); and/or 
     b) from the treatment container ( 136 ) into the fluid tank ( 134 ) in order to empty the treatment chamber ( 148 ). 
     84. Method—in particular, according to one of embodiments 82 or 83—wherein the method comprises the following:
         introducing one or more workpieces ( 102 ) into one or more treatment chambers ( 148 ) of one or more treatment stations ( 114 );   flooding the one or more treatment chambers ( 148 ) with a fluid for performing the treatment,       

     wherein, by means of a fluid guide ( 140 ), the fluid is guided 
     a) from the fluid tank ( 134 ) into the respective treatment chamber ( 148 ) in order to flood one or more treatment chambers ( 148 ); and/or 
     b) from the respective treatment chamber ( 148 ) into the fluid tank ( 134 ) in order to empty the treatment chambers ( 148 ). 
     85. Method according to one of embodiments 82 through 84, characterized in that the fluid is successively, and in particular completely staggered in time, 
     a) removed from the fluid tank ( 134 ) and fed to one or more treatment chambers ( 148 ), and
         b) thereafter, and in particular subsequently or at a later time, e.g., after a cleaning of the fluid in a cleaning device ( 200 ), is guided back into the fluid tank ( 134 ),       

     wherein the fluid tank ( 134 ) and/or the one or more treatment chambers ( 148 ) are thereby preferably alternately filled and emptied. 
     86. Method according to one of embodiments 82 through 85, characterized in that the fluid is successively, and in particular completely staggered in time, 
     a) fed to one or more treatment chambers ( 148 ) of a treatment station ( 114 ) of a first treatment unit ( 106 ), and 
     b) thereafter, and in particular subsequently or at a later time, e.g., after an interim storage in an interim storage tank, is fed to one or more treatment chambers ( 148 ) of a treatment station ( 114 ) of a second treatment unit ( 106 ). 
     87. Method—in particular, according to one of embodiments 82 through 86—for treating workpieces ( 102 ), and in particular for cleaning and/or coating vehicle bodies ( 104 ), wherein the method comprises the following:
         introducing a workpiece ( 102 ) through an access opening ( 158 ) of a treatment container ( 136 ) into a treatment chamber ( 148 ) of the treatment container ( 136 );   closing the access opening ( 158 ) of the treatment container ( 136 ) by means of a closing device ( 164 );   flooding the treatment chamber ( 148 ) with a fluid for performing a workpiece treatment.       

     88. Method—in particular, according to one of embodiments 82 through 87—for treating workpieces ( 102 ), and in particular for cleaning and/or coating vehicle bodies ( 104 ), wherein the method comprises the following: 
     conveying one or more workpieces ( 102 ) by means of a conveying device ( 110 ); 
     introducing the one or more workpieces ( 102 ) into a treatment chamber ( 148 ) of a treatment station ( 114 ) for performing a treatment step; 
     flooding the treatment chamber ( 148 ) with a fluid; 
     removing the fluid and discharging the workpieces ( 102 ) from the treatment chamber ( 148 ) by means of the conveying device ( 110 ), 
     wherein the workpieces ( 102 ) are introduced into the treatment chamber ( 148 ) and discharged from the same in particular in an at least approximately horizontal direction. 
     89. Method—in particular, according to one of embodiments 82 through 88—for treating workpieces ( 102 ), characterized in that the workpieces ( 102 ) are conveyed along a main conveying direction ( 116 ) from one treatment station ( 114 ) to the next and are introduced into the treatment chambers ( 148 ) of the treatment stations ( 114 ) in an introduction direction ( 182 ) extending transversely, and in particular perpendicularly, to the main conveying direction ( 116 ). 
     90. Method—in particular, according to one of embodiments 82 through 89—for treating workpieces ( 102 ), and in particular for cleaning and/or coating vehicle bodies ( 104 ), wherein the method comprises the following:
         introducing a workpiece ( 102 ) into a treatment chamber ( 148 ) of a treatment container ( 136 );   flooding the treatment chamber ( 148 ) with a fluid for performing a workpiece treatment, wherein the flooding is supported by means of one or more installation elements ( 188 ) that are arranged or can be arranged in the treatment chamber ( 148 ).       

     91. Method—in particular, according to one of embodiments 82 through 90—for treating workpieces ( 102 ), and in particular for cleaning and/or coating vehicle bodies ( 104 ), wherein the method comprises the following: 
     conveying one or more workpieces ( 102 ) by means of a conveying device ( 110 ); 
     introducing the one or more workpieces ( 102 ) into a treatment chamber ( 148 ) of a treatment station ( 114 ) for performing a treatment step; 
     flooding the treatment chamber ( 148 ) with a fluid; 
     removing the fluid and discharging the workpieces ( 102 ) from the treatment chamber ( 148 ) by means of the conveying device ( 110 ), 
     wherein, by means of the conveying device ( 110 ), in an emptied state of the respective treatment chamber ( 148 ), the workpieces ( 102 ) are introduced into the same through an access opening ( 158 ) designed as an introduction opening ( 160 ) and by means of which, in an emptied state of the respective treatment chamber ( 148 ), the workpieces ( 102 ) are discharged from the same through an access opening ( 158 ) designed as a discharge opening ( 162 ), wherein the introduction opening ( 160 ) and the discharge opening ( 162 ) are distinct access openings ( 158 ). 
     92. Method according to embodiment 91, characterized in that the workpieces ( 102 ) are conveyed, in a longitudinal orientation ( 202 ) of the same, along a main conveying direction ( 116 ) from one treatment station ( 114 ) to the next and are conveyed through the treatment chambers ( 148 ) of the treatment stations ( 114 ) in the same longitudinal orientation ( 202 ). 
     LIST OF REFERENCE SIGNS 
     
         
         
           
               100  Treatment plant 
               102  Workpiece 
               104  Vehicle body 
               106  Treatment unit 
               108  Feeding station 
               110  Conveying device 
               112  Distributor device 
               114  Treatment station 
               116  Main conveying direction 
               118  Main conveying path 
               120  Tunnel section 
               122  Cleaning station 
               124  Spraying station 
               126  Flushing station 
               128  Removal station 
               130  Combining device 
               132  Transverse orientation 
               134  Fluid tank 
               136  Treatment container 
               138  Collecting element 
               140  Fluid guide 
               142  Feed line 
               144  Valve device 
               146  Bottom region 
               148  Treatment chamber 
               150  Bottom wall 
               152  Ceiling wall 
               154  Side wall 
               156  Front wall 
               158  Access opening 
               160  Introduction opening 
               162  Discharge opening 
               164  Closing device 
               166  Closing element 
               168  Closing drive 
               170  Lifting device 
               172  Lock gate 
               174  Guiding device 
               176  Guiding device 
               178  Accommodation device 
               180  Skid 
               182  Introduction direction 
               184  Horizontal direction 
               186  Discharge line 
               188  Installation element 
               190  Displacement element 
               192  Support element 
               194  Inflow region 
               196  Counter tank 
               198  Pump device 
               200  Cleaning device 
               202  Longitudinal orientation 
               204  Turntable 
               206  End 
               208  Transverse displacement device 
               210  Transfer station 
               212  Dip tank 
               214  Folding element 
               216  Collecting funnel 
               218  Collecting container 
               220  Drive unit 
               222  Guide path section 
               224  Coupling device 
               226  Outer side 
               228  Side wall 
               230  Through-opening 
               232  Coupling element 
               234  Pulling element 
               236  Tensioning element 
               238  Sensor device 
               240  Sensor element 
               242  Transducer element 
               244  Coupling rod 
             g Direction of gravity