EP3218204B1 - Coating device with roller - Google Patents

Description

The invention relates to a system for coating at least one side of a strip-shaped substrate, comprising at least one arranged above the substrate upper applicator roll, at least one arranged below the substrate lower applicator roll and at least one associated with the upper applicator adjustment, with a position of the upper applicator roll relative to the lower applicator roll is variable.

Equipment for coating a belt-shaped substrate are known in various embodiments. In particular, it is known to apply a coating medium to a belt-shaped substrate by means of such a machine using an application roll method. See also EP2634008 , US 5,385,610 A discloses an apparatus for coating a belt-shaped substrate on both sides, comprising an upper applicator roll located above the substrate, a lower applicator roll located below the substrate, and an adjustment device connected to the upper applicator roll, with the position of the upper applicator roll in the vertical direction and transverse to a longitudinal center axis the upper applicator roll is variable relative to the lower applicator roll. With the adjustment, the upper applicator roll can be moved linearly in the vertical direction. Each side of each applicator roll a metering roller is arranged in each case, whose position is variable to the respective applicator roll in the horizontal direction.

CN 201 785 472 U relates to a system for double-sided coating of a strip-shaped substrate, which comprises an upper applicator roller arranged above the substrate, a lower applicator roller arranged below the substrate and an adjusting device connected to the upper applicator roller, with which a position of the upper applicator roller in the vertical direction and transversely to one Longitudinal axis of the upper applicator roll is variable relative to the lower applicator roll. For this purpose, an upper frame holding the upper applicator roll can be pivoted with the adjusting device about a horizontal axis. The lower applicator roll is arranged on a slide on a slanted path linearly movable on a lower frame. Each side of each applicator roll a metering roller is arranged in each case, whose position is variable to the respective applicator roll in the horizontal direction.

The object of the invention is to improve the function of the aforementioned system.

This object is solved by the independent claim. Advantageous embodiments are specified in particular in the dependent claims, each of which taken alone or in various combinations with each other can represent an aspect of the invention.

The system according to the invention for at least one-sided coating of a strip-shaped substrate comprises at least one upper application roller arranged above the substrate, at least one lower application roller arranged below the substrate and at least one adjustment device connected to the upper application roller, with which a position of the upper application roller relative to the lower application roller is variable, wherein the adjusting device is designed such that with it the position of the upper applicator roller relative to the lower applicator roll in the horizontal direction and transversely to a longitudinal central axis of the upper applicator roll is variable.

In contrast to the above-mentioned prior art, in the inventive system, the upper applicator roll relative to the lower applicator roll, in particular independent of any vertical movements, in the horizontal direction and transverse to the longitudinal center axis of the upper applicator roll. As a result, by a contact of the substrate with the Application rollers resulting line load can be optimally adapted or adjusted to the particular application in order to obtain a desired coating result. Specifically, the upper applicator roll may be moved in a horizontal direction between a position above the lower applicator roll in which the longitudinal central axis of the upper applicator roll is vertically above the longitudinal central axis of the lower applicator roll and there may be a maximum line load and a laterally offset position. The contact force of the upper applicator roll is partially or completely absorbed by the lower applicator roll. In addition, a load resulting from the weight of the substrate resting thereon acts on the lower application roller. The system according to the invention is thus distinguished from conventional systems by a simpler and more robust design, a safer handling of coating media, a greater variability of the process parameters and a simplified setup.

After its coating, the substrate can be fed to a horizontal oven in which the coating medium is dried by a heat treatment and cured by chemical reactions, whereby optionally the cohesive connection between the substrate and the coating medium can be additionally improved. The substrate may be, for example, a metal strip, in particular a steel strip.

The applicator rolls may each comprise a bale of steel with a sheath of elastic hard rubber, for example polyurethane (PU), ethylene-propylene-diene rubber (EPDM) or chlorine-sulphate polyethylene (CSM).

The adjusting device can be designed to be hydraulic, pneumatic, electromechanical or, for a manual operation, mechanically. In particular, the adjusting device may have at least one electric spindle drive.

The coating medium may be applied to the substrate with the upper and / or lower applicator roll. The order is significantly influenced by the respective contact force between the applicator rollers or the respective immersion depth of the applicator rollers in the substrate. For varying the layer thickness of the applied coating, different manipulated variables can be taken into account. These depend on the method used for coloring the respective application roller, on the co-driving or counter-rotating operation of the respective applicator roller relative to the conveying direction of the substrate through the system, on the ratio of the circumferential speed of the respective applicator roller to the conveying speed of the substrate and on the mutual pressure. or squeezing the applicator rollers with each other. Other influencing factors are, for example, the viscosity of the coating medium, the roughnesses of the surfaces involved in the process and the temperature of the coating medium and the substrate.

The system preferably comprises a sensor system for detecting and adjusting the operating state of the system. All drives or manual adjustment options can each be combined with one path measuring system (scales or sensors) in order to be able to detect the relative position of the application rollers relative to one another and of the application rollers to the substrate. Critical positions can also be detected via limit switches. In a contact of the applicator rollers, the contact force between the applicator rollers can be measured directly with force pin or hydraulic adjustment indirectly via a pressure measurement on a hydraulic cylinder. A force measurement can be carried out in particular on the application rollers, between an applicator roller and a metering roller and on the adjusting device.

According to an advantageous embodiment, the adjusting device comprises at least one guide structure, at least one of the guide structure according to the upper applicator roll linearly movable arranged slide on which the upper applicator roll is rotatably mounted about its longitudinal central axis, and at least one adjustment unit connected to the carriage, with which a position of the carriage relative to the guide structure can be varied. The adjusting unit can be manually actuated or have at least one electrically controllable drive. With the adjusting unit, the position of the upper applicator roller relative to the position of the lower applicator roller in the horizontal direction can thus be varied. The guide structure may comprise at least one straight guide rail, on which the carriage is guided longitudinally movable. The carriage may be movably guided on the guide structure via sliding bodies or rollers.

Advantageously, the system comprises at least one metering roller arranged at least partially laterally of the upper applicator roller, at least one further carriage linearly movably arranged on the guide structure corresponding to the upper applicator roller, on which the metering roller is rotatably mounted about its longitudinal central axis, and at least one connected to the further carriage further adjustment unit, with which a position of the further carriage is variable relative to the carriage holding the upper applicator roll, wherein the further adjustment unit connects the two carriages together. The metering roller is connected to a system for coloring the metering roller. The metering roller may have a steel bale with or without a circumferential coating. The coating may be, for example, a ceramic coating or a rubber coating. The metering roller can be designed as an anilox roller. The further adjustment unit can be designed to be mechanical, pneumatic, electromechanical or, for manual actuation. If the upper application roller is moved in the horizontal direction by the adjustment unit, the metering roller simultaneously moves in the horizontal direction. The metering roller is moved by the further adjusting unit, regardless of the upper applicator roll and relative to the upper applicator roll. The upper applicator roll and the metering roll and their respective associated adjustment units are arranged in series, so that a set between these two rolls line contact in the process of upper applicator roll remains unchanged by means of the adjustment. The inking of the upper applicator roll may be accomplished by introducing the coating medium through a tube into a nip between the upper applicator roll and the metering roll, wherein the coating medium may be fed to back-up between the rolls to form a kind of backwater sink in which Nip is and thereby dosed. The coating of the substrate can take place with respect to a conveying direction of the substrate by a cooperative or opposite driving manner of the upper applicator roll. For a change between these modes of operation of the upper application roller, the metering roller must be arranged on the other side of the upper application roller. The guide structure may comprise at least one straight guide rail, on which the further carriage is guided longitudinally movable. The further carriage can be movably guided on the guide structure via sliding bodies or rollers.

According to a further advantageous embodiment, the plant comprises two on opposite sides of the upper applicator roll, each at least partially laterally to the upper applicator roll and at a fixed distance from each other arranged metering rollers which are rotatably mounted about their respective longitudinal central axis on the other carriage. The metering rollers are arranged at such a distance from each other on the other carriage, that only one of the metering rollers is used for inking the upper applicator roll, while the other metering roller is located at a greater distance from the upper applicator roll. When changing between a co-rotating and an opposite operation of the upper applicator roll can be done a quick change between the metering rollers via a control of the other adjustment, so that the upper applicator roll is inked by means of each other metering.

According to a further advantageous embodiment, the system comprises at least one roller unit arranged on the inlet side with at least one below the Substrate arranged support roller, which is connected upstream of the plant of the lower applicator roll with respect to a conveying direction of the substrate. The support roller is permanently in contact with the substrate and defines a chain line, that is, the tape running of the substrate through the system. The support roller can also define a height at which the substrate enters a downstream horizontal furnace. In a chemical coater plant, drying of the aqueous coating medium and support or initiation of chemical reactions in the coating medium and between the substrate and the coating medium occur in the furnace. The upper applicator roll can be moved between a center position located centrally between the lower applicator roll and the support roll and the position vertically above the lower applicator roll in a horizontal direction. A minimal line load on the lower applicator roll results when the upper applicator roll is in the center position. In this position, the contact force of the upper application roller is distributed in half on the lower application roller and the other support roller.

It is furthermore advantageous if the roller unit has at least one pressure roller arranged above the substrate, wherein a roller gap is formed between the carrier roller and the pressure roller, through which the substrate can be conveyed. The pressure roller can be pressed against the resting on the support roller substrate. With the pressure roller, a possibly present transverse arc of the substrate can be elastically pressed out of the substrate in the inlet of the system, whereby the line contact of the substrate with the application rollers is improved, which in turn is accompanied by an improved coating result. By the pressure roller or the roller unit, the system thus receives a greater tolerance to unwanted or with respect to a desired coating result unfavorable substrate geometries.

Advantageously, the roller unit comprises a fixed base unit, on which the carrier roller is rotatably arranged about its longitudinal center axis, at least one holding unit arranged above the substrate and movable on the base unit, on which the pressure roller is rotatably arranged about its longitudinal central axis, and at least one on the base unit and the holding unit attacking drive unit for moving the holding unit, wherein the holding unit is arranged pivotable about a horizontal axis or linearly movable in the vertical direction on the base unit. As a result, the contact pressure of the pressure roller can be varied.

According to a further advantageous embodiment, the system comprises at least one further adjusting device connected to the lower applicator roll, with which a position of the lower applicator roll relative to the upper applicator roll in the vertical direction and transversely to a longitudinal central axis of the lower applicator roll is variable. This allows the lower applicator roll to be turned against the belt (pass line). The immersion depth and the wrap angle of the lower applicator roll can be defined by a vertical stroke of the upper applicator roll.

It is furthermore advantageous if the further adjustment device has at least one vertical guide structure, at least one vertical slide arranged linearly on the vertical guide structure corresponding to the lower application roller, on which the lower application roller is rotatably mounted about its longitudinal center axis, and at least one connected to the vertical slide vertical adjusting unit, with which a position of the vertical slide is variable relative to the guide structure comprises. The vertical adjustment unit can be manually actuated or have at least one electrically controllable drive. With the vertical adjustment unit, the position of the lower application roller relative to the position of the upper application roller in the vertical direction can thus be varied. The vertical guide structure can have at least one straight guide rail which the vertical slide is guided longitudinally movable. The vertical slide can be movably guided on the vertical guide structure via sliding bodies or rollers.

Advantageously, the system comprises at least one scoop roller arranged at least partially below the lower applicator roller, at least one tray for accommodating a coating medium into which the scoop roller partially dives, at least one further arranged linearly movably on the vertical guide structure corresponding to the lower applicator roller Vertical slide, on which the scoop roller is rotatably mounted about its longitudinal central axis, and at least one further vertical slide connected to the further vertical adjustment unit, with which a position of the other vertical slide relative to the lower applicator roller holding vertical slide is variable, wherein the further vertical adjustment unit connects the two vertical slides together. After that, the substrate can be coated on both sides with the system. The scoop roller can be made of stainless steel or normal steel. It can have a ceramic coating. Furthermore, it can be designed as an anilox roller. In particular, the scoop roller can be designed in accordance with the above-mentioned metering roller. In addition, the surface of the scoop roller can be chromated. With the vertical adjustment unit immersion depth of the lower application roller can be adjusted in the substrate. With the further vertical adjustment unit, the contact force between the lower application roller and the scoop roller can be adjusted. The lower applicator roll and the scoop roll and their respective associated vertical Verstellinheiten are arranged in series, so that a set between these two rolls line contact during vertical movement of the lower applicator roll remains unchanged. When scooping the coating medium by means of the scoop roller from the tub, only the directions of rotation of the lower applicator roll and the scoop roller must be reversed for a change from the co-rotating to counter-rotating mode of the lower applicator roll become. The further vertical adjustment unit can be manually actuated or have at least one electrically controllable drive. The vertical guide structure may comprise at least one straight guide rail, on which the further vertical slide is longitudinally movably guided. The further vertical slide can be guided via sliding bodies or rollers movable on the vertical guide structure.

According to a further advantageous embodiment, the adjusting device is designed such that with it the position of the upper applicator roll relative to the lower applicator roll in the vertical direction and transversely to a longitudinal central axis of the upper applicator roll is variable. As a result, the contact force of the upper applicator roll can be adjusted against the substrate. For this purpose, the adjusting device may have at least one manually operable or electrically controllable drive unit.

According to a further advantageous embodiment, the system comprises at least one fixed base structure, on which at least one upper support structure arranged above the substrate, which carries the upper application roller, and at least one lower support structure arranged below the substrate, which carries the lower application roller, are movably arranged, wherein the upper support structure and / or the lower support structure by means of at least one common drive means or by means of their own drive means are each arranged to pivot about a horizontal axis or linearly movable on the base structure in the vertical direction. As a result of this mobility of the support structure or support structures, the upper application roller and / or the lower application roller can be vertically immersed in the substrate. The adjusting device is arranged on the upper supporting structure and the further adjusting device is arranged on the lower supporting structure.

According to a further advantageous embodiment, the system comprises at least one mobile roller conveyor wagon, the at least one receptacle for the upper applicator roll and at least one receptacle for the lower applicator roll, wherein the upper applicator roll and the lower applicator roll can be deposited by movements of the upper support structure and the lower support structure in the respective receptacles of the roller conveyor car. As a result, a simplified roll change and a simplified maintenance of the application rollers outside the plant can be done. By means of the producible with the common drive unit or the respective own drive units stroke of the upper support structure and the lower support structure, the applicator rollers can be raised and stored in the respective recordings of the roller conveyor wagon. For this purpose, no crane or the like is required. This is accompanied by improved handling of the system and improved accessibility of components of the system for maintenance purposes and a faster change of applicator rollers. If the applicator rollers are stored in the respective receptacles of the roller transport vehicle, the roller conveyor carriage can be moved out of the system.

Figur 1:

eine schematische Darstellung eines Ausführungsbeispiels für eine erfindungsgemäße Anlage in einem ersten Anlagenzustand;

Figur 2:

eine schematische Darstellung der in Figur 1 gezeigten Anlage in einem weiteren Anlagenzustand;

Figur 3:

eine schematische Detaildarstellung der in den Figuren 1 und 2 gezeigten Anlage;

Figur 4:

eine schematische Detaildarstellung eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Anlage;

Figur 5:

eine schematische Detaildarstellung der in Figur 4 gezeigten Anlage bei mitläufiger Fahrweise der oberen Auftragswalze;

Figur 6:

eine schematische Detaildarstellung der in Figur 4 gezeigten Anlage bei gegenläufiger Fahrweise der oberen Auftragswalze;

Figur 7:

eine schematische Detaildarstellung der in Figur 4 gezeigten Anlage bei mitläufiger Fahrweise der unteren Auftragswalze;

Figur 8:

eine schematische Detaildarstellung der in Figur 4 gezeigten Anlage bei gegenläufiger Fahrweise der unteren Auftragswalze;

Figur 9:

eine schematische Darstellung eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Anlage; und

Figur 10:

eine schematische Darstellung eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Anlage.

In the following, the invention will be explained by way of example with reference to the attached figures, by way of preferred embodiments, wherein the features illustrated below may represent an aspect of the invention both individually and in various combinations with each other. Show it:

FIG. 1:

a schematic representation of an embodiment of an inventive system in a first state of the system;

FIG. 2:

a schematic representation of in FIG. 1 shown installation in another state of the system;

FIG. 3:

a schematic detail of the in the FIGS. 1 and 2 shown plant;

FIG. 4:

a schematic detail of a further embodiment of an inventive system;

FIG. 5:

a schematic detail of the in FIG. 4 shown plant in mitläufiger driving the upper applicator roll;

FIG. 6:

a schematic detail of the in FIG. 4 shown system with opposite driving the upper applicator roll;

FIG. 7:

a schematic detail of the in FIG. 4 shown plant in mitläufiger driving the lower applicator roll;

FIG. 8:

a schematic detail of the in FIG. 4 shown plant with opposite driving style of the lower applicator roll;

FIG. 9:

a schematic representation of another embodiment of an inventive system; and

FIG. 10:

a schematic representation of another embodiment of an inventive system.

In the figures, identical or functionally identical components are provided with the same reference numerals.

FIG. 1 1 shows a schematic representation of an exemplary embodiment of a system 1 according to the invention for coating a strip-shaped substrate 2 on both sides. The system 1 comprises an upper application roller 3 arranged above the substrate 2 and a lower application roller 4 arranged below the substrate 2. Furthermore, the system 1 comprises a with the upper applicator roller 3 associated adjusting device 5, with a position of the upper applicator roller 3 according to the double arrows 6 and 7 shown relative to the lower applicator roll 4 in both vertical and independent in the horizontal direction and transverse to a longitudinal central axis 8 of the upper applicator roll 3 is variable. In addition, the plant 1 comprises a further adjusting device 9 connected to the lower applicator roll 4, with which a position of the lower applicator roll 4 relative to the upper applicator roll 3 in accordance with the double arrow 10 shown in the vertical direction and transversely to a longitudinal central axis 11 of the lower applicator roll 4 is variable ,

The adjusting device 5 comprises a guide structure 12, a slide 13 arranged to be linearly movable on the guide structure 12 corresponding to the upper applicator roll 3, on which the upper applicator roll 3 is rotatably mounted about its longitudinal central axis 8, and an in FIG. 3 shown, associated with the carriage 13 adjusting unit, with which a position of the carriage 13 according to the double arrow 7 relative to the guide structure 12 in the horizontal direction is variable.

The further adjusting device 9 comprises a vertical guide structure 14, a vertically slidably disposed on the vertical guide structure 14 corresponding to the lower applicator roller 4 vertical slide 15 on which the lower applicator roll 4 is rotatably mounted about its longitudinal central axis 11, and one connected to the vertical slide 15, not shown vertical adjustment unit, with a position of the vertical slide 15 is variable according to the double arrow 10 shown relative to the guide structure 14 in the vertical direction.

The system 1 further comprises two on opposite sides of the upper applicator roll 3, each at least partially laterally and offset in height to the upper applicator roll 3 and at a fixed distance from each other arranged metering rollers 16 and 17, one on the guide structure 12 corresponding to the upper applicator roll 3 linearly movable arranged further carriage 18, on which the metering rollers 16 and 17 about their respective longitudinal central axis 19 and 20th are rotatably mounted, and one connected to the other carriage 18, in FIG. 3 shown further adjustment unit with which a position of the other carriage 18 relative to the upper applicator roll 3 holding carriage 13 is variable in the horizontal direction. The further adjustment unit connects the two carriages 13 and 18 with each other. In FIG. 1 the metering roller 16 shown on the left is used for coloring the upper applicator roller 3, while the metering roller 17 shown on the right is located at a greater distance from the upper applicator roller 3. In a present between the metering roller 16 and the upper applicator roll 3 nip a coating medium 21 has been introduced with a feed system not shown.

The system 1 also comprises a scoop roller 22 arranged at least partially below the lower application roller 4, a tray 23 at least partially below the scoop roller 22 for receiving a coating medium 24 into which the scoop roller 22 is partially immersed, one at the vertical guide structure 14 corresponding to the lower one Application roller 4 arranged linearly movable further vertical slide 25, on which the scoop roller 22 is rotatably mounted about its longitudinal central axis 26, and connected to the further vertical slide 25, not shown further vertical adjustment, with a position of the other vertical slide 25 relative to the lower Application roller 4 holding vertical slide 15 is variable. The further vertical adjustment unit connects the two vertical slides 15 and 25 with each other.

The vertical guide structure 14 forms a fixed base structure 55, on which the guide structure 12, which forms an upper support structure 56 arranged above the substrate 2 and carrying the upper applicator roll 3, is arranged to be linearly movable in the vertical direction in accordance with the double arrow 27. The vertical slide 15 forms a arranged below the substrate 2 lower support structure 57, which carries the lower applicator roll 4. The upper support structure 56 and the lower support structure 57 are thus by means of at least one Not shown common drive means or by means of a respective not shown own drive means in the vertical direction linearly movable on the base structure 55 and vertical guide structure 14 is arranged.

The system 1 further comprises a roller unit 28 arranged on the inlet side with a support roller 29 arranged below the substrate 2, which is connected upstream of the lower application roller 4 by the installation 1 with respect to a conveying direction of the substrate 2. In addition, the roller unit 28 comprises a contact roller 30 arranged above the substrate 2, wherein a roller gap is formed between the carrier roller 29 and the pressure roller 30, through which the substrate 2 can be conveyed. Furthermore, the roller unit 28 comprises a fixed base unit 31, on which the support roller 29 is rotatably arranged about its longitudinal center axis 32, a holding unit 34 arranged above the substrate 2 and corresponding to the double arrow 33 in a vertical direction linearly movable on the base unit 31, to which the pressure roller 30 is rotatably disposed about its longitudinal central axis 35, and on the base unit 31 and the holding unit 34 engaging, not shown drive unit for moving the holding unit 34th

In the in FIG. 1 As shown, the upper applicator roll 3 is vertically above the lower applicator roll 4, creating a maximum line load.

FIG. 2 shows a schematic representation of the in FIG. 1 shown Appendix 1 in a further state of the plant. This plant state goes from in FIG. 1 shown system state in that the carriage 13 has been moved horizontally according to the double arrow 7 in a lying between the lower application roller 4 and the support roller 29 center position. This creates a minimum line load.

FIG. 3 shows a schematic detail of the in the FIGS. 1 and 2 shown plant 1. It is the guide structure 12 to see the one Guide rail 36 has, on which the carriage 13 is arranged according to the double arrow 7 in the horizontal direction linearly movable. The adjusting device 5 comprises an adjustment unit 37 connected to the carriage 13, with which the position of the carriage 13 in accordance with the double arrow 7 relative to the guide rail 36 or the guide structure 12 in the horizontal direction can be varied. The adjusting unit 37 is designed as a double-acting hydraulic cylinder, which acts on the one hand on the guide rail 36 and on the other hand on the carriage 13. Furthermore, a further adjusting unit 38 can be seen, via which the carriage 13 is connected to the further carriage 18 in order to be able to vary the position of the further carriage 18 in the horizontal direction relative to the carriage 13. For this purpose, the further carriage 18 is arranged to be linearly movable on a further guide rail 39 of the guide structure 12. The further adjustment unit 38 is designed as a double-acting hydraulic cylinder.

FIG. 4 shows a schematic detail of another embodiment of an inventive system 1. This Appendix 1 differs from that in the FIGS. 1 to 3 shown embodiment that only one metering roller 16 is present and that the further carriage 18 is formed reduced accordingly. Incidentally, Appendix 1 is in accordance with FIGS. 1 to 3 formed, so reference is made here to avoid repetition of the above description.

FIG. 5 shows a schematic detail of the in FIG. 4 shown Appendix 1 in mitläufiger driving the upper applicator roll 3. The conveying direction of the substrate 2 is indicated by the arrow 40. The directions of rotation of the upper applicator roll 3 and the metering roller 16 are indicated by the arrows 41 and 42, respectively.

FIG. 6 shows a schematic detail of the in FIG. 4 shown Appendix 1 with opposite driving style of the upper applicator roll 3 Dosing roller 16 may be arranged on the opposite side of the upper applicator roll 3, as it is in FIG. 6 is shown. Such a change of the arrangement of the metering roller 16 is in the in the FIGS. 1 to 3 shown embodiment is not required, so that can be switched faster between a mitläufigen driving and an opposite driving style of the upper applicator roll 3.

FIG. 7 shows a schematic detail of the in FIG. 4 shown Appendix 1 in mitläufiger driving the lower applicator roll 4. The conveying direction of the substrate 2 is indicated by the arrow 40. The directions of rotation of the lower application roller 4 and the scoop roller 22 are indicated by the arrows 43 and 44, respectively.

FIG. 8 shows a schematic detail of the in FIG. 4 shown arrangement 1 in the opposite mode of operation of the lower applicator roll 4. The arrangement of the scoop roller 22 to the lower applicator roll 4 does not have this according to the in the Figures 5 and 6 can be changed shown dosing.

FIG. 9 shows a schematic representation of another embodiment of an inventive system 1. This Appendix 1 differs from that in the FIGS. 1 to 3 shown embodiment, that formed by guide structure 12 upper support structure 56 and disposed below the substrate 2 lower support structure 45 which carries the lower applicator roll 4, each pivotable about a horizontal axis 46 and 47 corresponding to the double arrows 48 and 49 at the through the vertical guide structure 14 formed base structure 55 are arranged. In addition, the holding unit 34 is arranged according to the double arrow 50 about a horizontal axis 51 pivotally mounted on the stationary base unit 31.

FIG. 10 shows a schematic representation of another embodiment of an inventive system 1. The system 1 differs from the in FIG. 9 shown embodiment, that it has a movable roller conveyor carriage 52 having a receptacle 53 for the upper applicator roll 3 and a receptacle 54 for the lower applicator roll 4. The upper application roller 3 and the lower application roller 4 can be deposited by movements of the upper support structure 56 and the lower support structure 45 formed by the guide structure 12 in the respective receptacles 53 and 54 of the roller conveyor 52, as in FIG. 10 is shown. The roller conveyor 52 may include a plurality of rollers, not shown, for moving. Otherwise, Annex 1 corresponds to the one in FIG. 9 shown embodiment, which is why here to avoid repetition of the above description FIG. 9 is referenced.

Annex 1 according to FIGS. 1 to 10 may have an electronic control and / or regulating unit, not shown, which is signal-technically connectable to the adjusting devices, adjusting units, drive units or drive means to control them electrically. For this purpose, the control and / or regulating unit can be connected by signal technology to a system of sensors, not shown, with which a current state of the system or instantaneous contact forces and positions of system components can be detected. The signals generated by the system sensors can be taken into account by the control and / or regulating unit in the control of the active system components.

LIST OF REFERENCE NUMBERS

1

investment

2

substratum

3

upper applicator roll

4

lower applicator roll

5

adjustment

6

double arrow

7

double arrow

8th

Longitudinal central axis

9

further adjustment

10

double arrow

11

Longitudinal central axis

12

management structure

13

carriage

14

vertical management structure

15

vertical slide

16

metering

17

metering

18

another sled

19

Longitudinal central axis

20

Longitudinal central axis

21

coating medium

22

scoop roller

23

tub

24

coating medium

25

another vertical slide

26

Longitudinal central axis

27

double arrow

28

rolling unit

29

king roll

30

pressure roller

31

base unit

32

Longitudinal central axis

33

double arrow

34

holding unit

35

Longitudinal central axis

36

guide rail

37

adjustment

38

further adjustment unit

39

guide rail

40

arrow

41

arrow

42

arrow

43

arrow

44

arrow

45

lower support structure

46

axis

47

axis

48

double arrow

49

double arrow

50

double arrow

51

axis

52

Rolling trolley

53

admission

54

admission

55

base structure

56

upper support structure

57

lower support structure

Claims (13)

1. Plant (1) for coating a strip-shaped substrate (2) on at least one side, comprising at least one upper application roller (3) arranged above the substrate (1), at least one lower application roller (4) arranged below the substrate (2) and at least one adjusting device (5) which is connected with the upper application roller (3) and by which a setting of the upper application roller (3) relative to the lower application roller (4) is variable, characterised in that the adjusting device (5) is so constructed that the setting of the upper application roller (3) relative to the lower application roller (4) is variable in horizontal direction and transversely to a longitudinal centre axis (8) of the upper application roller (3) by the adjusting device.
2. Plant (1) according to claim 1, characterised in that the adjusting device (5) comprises at least one guide structure (12), at least one carriage (13), which is arranged at the guide structure (12) to be linearly movable in correspondence with the upper application roller (3) and on which the upper application roller (3) is mounted to be rotatable about the longitudinal centre axis (8) thereof, and at least one adjusting unit (37) which is connected with the carriage (13) and by which a setting of the carriage (13) relative to the guide structure (12) is variable.
3. Plant (1) according to claim 2, characterised by at least one metering roller (16, 17) arranged at least in part laterally with respect to the upper application roller (3), at least one further carriage (18), which is arranged at the guide structure (12) to be linearly movable in correspondence with the upper application roller (3) and on which the metering roller (16, 17) is mounted to be rotatable about the longitudinal centre axis (19, 20) thereof, and at least one further adjusting unit (38) which is connected with the further carriage (18) and by which a setting of the further carriage (18) relative to the carriage (13) holding the upper application roller (3) is variable, wherein the further adjusting unit (38) connects the two carriages (13, 18) together.
4. Plant (1) according to claim 3, characterised by two metering rollers (16, 17), which are arranged at least in part laterally with respect to the upper application roller (3) and at a fixed mutual spacing and which are mounted on the further carriage (18) to be rotatable about the respective longitudinal centre axis (19, 20) thereof.
5. Plant (1) according to any one of claims 1 to 4, characterised by at least one roller unit (28), which is arranged at the entry side, with at least one support roller (29), which is arranged below the substrate (2) and which is upstream of the lower application roller (4) with respect to a direction of conveying of the substrate (2) through the plant (1).
6. Plant (1) according to claim 5, characterised in that the roller unit (28) comprises at least one pressing roll (30) arranged above the substrate (2), wherein a roller gap through which the substrate (2) can be conveyed is formed between the support roller (29) and the pressing roller (30).
7. Plant (1) according to claim 6, characterised in that the roller unit (28) comprises a stationary base unit (31) at which the support roller (29) is arranged to be rotatable about the longitudinal centre axis (32) thereof, at least one holding unit (34), which is arranged above the substrate (2) and movably at the base unit (31) and at which the pressing roller (30) is arranged to be rotatable about the longitudinal centre axis (35) thereof, and at least one drive unit, which acts on the base unit (31) and the holding unit (34), for movement of the holding unit (34), wherein the holding unit (34) is arranged at the base unit (31) to be pivotable about a horizontal axis (51) or linearly movable in vertical direction.
8. Plant (1) according to any one of claims 1 to 7, characterised by at least one further adjusting device (9) which is connected with the lower application roller (4) and by which a setting of the lower application roller (4) relative to the upper application roller (3) is variable in vertical direction and transversely to a longitudinal centre axis (11) of the lower application roller (4).
9. Plant (1) according to claim 8, characterised that the further adjusting device (9) comprises at least one vertical guide structure (14), at least one vertical carriage (15), which is arranged at the vertical guide structure (14) to be linearly movable in correspondence with the lower application roller (4) and on which the lower application roller (4) is mounted to be rotatable about the longitudinal centre axis (11) thereof, and at least one vertical adjusting unit which is connected with the vertical carriage (15) and by which a setting of the vertical carriage (15) relative to the guide structure (14) is variable.
10. Plant (1) according to claim 9, characterised by at least one scoop roller (22) arranged at least in part below the lower application roller (4), at least one trough (23), which is arranged at least in part below the scoop roller (22), for reception of a coating medium (24), into which the scoop roller (22) partly dips, at least one further vertical carriage (25), which is arranged at the vertical guide structure (14) to be linearly movable in correspondence with a lower application roller (4) and on which the scoop roller (22) is mounted to be rotatable about the longitudinal centre axis (26) thereof, and at least one further vertical adjusting unit which is connected with a further vertical carriage (25) and by which a setting of the further vertical carriage (25) relative to the vertical carriage (15) holding the lower application roller (4) is variable, wherein the further vertical adjusting unit connects the two vertical carriages (15, 25) together.
11. Plant (1) according to any one of claims 1 to 10, characterised in that the adjusting device (5) is so constructed that the setting of the upper application roller (3) relative to the lower application roller (4) is variable in vertical direction and transversely to a longitudinal centre axis (8) of the upper application roller (3) by the adjusting device (5).
12. Plant (1) according to any one of claims 1 to 11, characterised by at least one stationary base structure (55) at which are movably arranged at least one upper support structure (56), which is arranged above the substrate (2) and carries the upper application roller (3), and at least one lower support structure (45, 57), which is arranged below the substrate (2) and carries the lower application roller (4), wherein the upper support structure (56) and/or the lower support structure (45, 57) is or are arranged at the base structure (55) to each be pivotably movable about a horizontal axis (46, 47) or linearly movable in vertical direction by means of at least one common drive device or by means of a respective individual drive device.
13. Plant (1) according to claim 12, characterised by at least one movable roller transport car (52) which comprises at least one receiver (53) for the upper application roller (3) and at least one receiver (54) for the lower application roller (4), wherein the upper application roller (3) and the lower application roller (4) can be deposited in the respective receivers (53, 54) of the roller transport car (52) by movements of the upper support structure (56) or the lower support structure (45, 57).

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