DE102011107604A1 - Coating device used for coating plastic profile strip, has spray nozzle from which coating beam is passed by working arm of freely programmable robot along transport direction of plastic profile strip - Google Patents

Abstract

The coating device (1) has an inlet guide element through which plastic profile strip (2) is inserted towards an outlet guide element used for extracting the plastic profile strip. The coating beam from a spray nozzle (6) is passed by a working arm (8) of a freely programmable robot (7) along transport direction of the plastic profile strip. The transport direction of plastic profile strip component is selected from a group consisting of a counter-flow direction component, a direct current (DC) direction component and a cross-flow direction component.

Description

A coating device for a plastic profile strand is described. The coating device has an inlet guide element which is designed to admit the variably extruded plastic profile strand into the coating device. Furthermore, the coating device has an outlet guide element, which is designed to omit the plastic profile strand from the coating device. At least one spray nozzle is designed to coat the plastic profile strand.

From the publication DE 197 06 804 A1 For this purpose, a method for producing lubricating lacquer-coated profiles for the industry and a bonded coating profile is known. In particular, sealing profiles made of elastomeric material for a variety of applications can be inexpensively and absolutely stable and formed with low coefficient of friction and made when the profiles made of a non-paint repellent material and after leaving an extruder with a on the surface of the profile with a perpendicular in the cross-flow direction coated to a transport direction of the profile bonded coating. This results in a toothing of the profile surface with the bonded coating, so that correspondingly long service life can be achieved. In this case, a uniform air-free, uniform coating is achieved with the known method.

The profiles, which consist of rubber, plastics or corresponding mixtures, are required for a wide variety of areas and used for all-round seals of movable window panes in relation to a profile frame. For this purpose, the profiles are variably extruded and, for example, vulcanized in a molten salt bath or tempered in a tempering device, in order subsequently to be treated further and to be provided with a coating favoring the further processing. Also, this coating can serve in particular in motor vehicle to protect particularly stressed surfaces of the seal from rapid wear.

A conventional coating apparatus, which is to apply such bonded coatings, has for this purpose at least one spray nozzle, which is to be aligned relative to the transport direction in the cross-flow direction perpendicular to the transport direction of the plastic profile strand. However, the reproducibility of the manual alignment of such spray nozzles is limited, so that it comes at least in the start-up phase of coating a plastic profile strand to Einlaufschwierigkeiten and by a non-optimally adjusted spray nozzle, a relatively high waste can be caused during coating.

An object of the invention is to improve the reproducibility of the coating of a plastic profile strand and to allow an increased variance of the orientation of the spray jet of the spray nozzle.

This object is achieved with the subject matter of the independent claim 1. Advantageous further developments emerge with the features of the dependent claims.

An embodiment of the invention relates to a coating device for a plastic profile strand. The coating device has an inlet guide element which is designed to admit the plastic profile strand into the coating device. Furthermore, the coating device has an outlet guide element, which is designed to omit the plastic profile strand from the coating device. At least one spray nozzle is designed to coat the plastic profile strand. A coating jet of the at least one spray nozzle can be aligned by means of a working arm of a freely programmable robot to a transport direction of the plastic profile strand in the coating device. The direction is selectable from a combination of a group consisting of a reverse current direction component, a direct current direction component and a cross current direction component.

In this context, a counterflow direction component is to be understood as meaning a spray direction component which is aligned counter to the transport direction of the plastic profile strand. A DC-direction component is to be understood as meaning a spray-directing component which is aligned in the direction of the transport direction of the plastic profile strand. As a cross-flow direction component, the hitherto conventional orientation of a spray perpendicular or transverse to the transport direction of the plastic profile strand is called, as for example with the DE 197 06 804 A1 known Sprühringen is common.

By a combination of a group consisting of a reverse current direction component, a direct current direction component, and a cross current direction component, regions of a contour of a cross section of a higher wear profile over adjacent areas of reduced wear can advantageously be preprogrammed with a higher coating thickness by merely adjusting the spray beam orientation ,

By using at least one robot for aligning and fixing the spray nozzle, not only the reproducibility of such complex distributions of the coating thickness is significantly increased, but it is possible to reproducibly the variation possibilities, both in the layer thickness and in layer thickness distribution on the contour of the profile not in the quality and variance are possible. By using a programmable robot for holding and aligning the at least one spray nozzle, a sufficient layer thickness and a uniformity of the layer thickness distribution can be achieved.

Even if different profiles are driven in an extruder line if necessary, so that it comes to increased set-up times, which can result in a conventional manual alignment of the nozzle rings to reject productions, since such a process depends on the adjustment by appropriate personnel, now such Coating process can be standardized and improved by using the pre-programmable robot. Process variations, which are otherwise obvious and have to be compensated for by a considerable overspray for the lubricating varnish, are now minimized by the use of the robot in such a way that not only uniformity and reproducibility are improved, but also the consumption of coating varnish can be minimized. Through the use of relatively small painting robot of a few 10 cm in height in a corresponding coating chamber, an exact position of the respective spray nozzle can be set and programmed repeatable.

If it comes to retooling by changing the cross section of a plastic profile strand, only the program for this cross-section needs to be called up and fed to the robot. The risk of retrofitting is reduced, which also reduces the set-up time and the start-up committee. If the profile fluctuates, the programmable robot can also respond to such fluctuations and perform layer-oriented coating. The robot can be positionally independent standing, hanging or arranged obliquely. Such programmable robots can also be explosion-proof, so that it is possible to apply lacquers containing solvents.

In one embodiment, the coating chamber has an inlet opening, an outlet opening, the inlet guide element and the outlet guide element and the coating station with at least one robot and the at least one spray nozzle. In this case, the inlet opening and the outlet opening are adapted to the cross section of the plastic profile strand and have at least twice the cross-sectional area of the plastic profile strand as the opening area to ensure that the inlet and the outlet at a high throughput of, for example, 20 meters per minute without obstruction at the inlet opening and / or the outlet opening can be ensured.

Further, the chamber of the coater may be located downstream relative to an extruder device of a plastic extrusion line, which has the advantage that the relatively high extruder temperature of up to 200 ° C may be utilized to allow the lubricating lacquer to dry. For this purpose, the chamber of the coating device is arranged in a region of the extruded plastic profile strand in which the plastic profile strand has a temperature T _ST of T _ST ≥ 100 ° C, so that an aqueous liquid can evaporate.

Furthermore, it is provided that the working arm is designed to on the one hand align the holding device with the at least one spray nozzle preprogrammed on the plastic profile strand and on the other hand to be able to pivot away the holding device of the plastic profile strand. The spray nozzle is also designed to be able to turn on and off a spray jet preprogrammed. The pivoting away from a working or coating position in a shutdown or rest position is now possible by the programmable robot.

This has the advantage that, depending on the length of the plastic profile strand transported through the coating station, the layer thickness and coating with the lubricating varnish can be provided in sections, without the transition regions which otherwise impair the switching off and on of the transition areas in a spray jet reducing the quality of the coating. Thus, it is advantageous to make the switching on and off of the spray nozzle only in weggeschwenkten state and set the program of the robot so that different paint thicknesses are varied by pivoting the spray nozzle over the length of the plastic profile strand.

The coating station is designed to coat the plastic profile strand of a vehicle sealing profile with a bonded coating layer. In order to produce such a bonded coating on a vehicle sealing profile, in a further embodiment of the invention, the spray nozzle has a first supply line for an aqueous liquid and a second supply line for a coating liquid emulsifying in aqueous liquid. The two liquids are then intimately mixed in one volume of the spray nozzle and sprayed onto the over 100 ° C hot plastic profile strand. During this process, the aqueous liquid evaporates, while the emulsified lubricating varnish fluid forms a drying, permanently resistant lubricious coating.

In this case, the first supply line and the second supply line are formed, preprogrammed to forward a predetermined mixing ratio of an aqueous liquid to a lubricating liquid emulsifying in aqueous liquid of the spray nozzle. This has the additional advantage that the mixing ratio can be adapted to different requirements of the layer thickness during the painting process. For example, by increasing the proportion of aqueous liquid, the thickness of the lubricating paint layer can be reduced, while by increasing the proportion of the emulsifying lubricating paint component, the coating thickness for the lubricating paint can be increased.

A coating chamber, as mentioned above, advantageously has four side walls, a bottom wall and a top wall, wherein the robot has a mounting base and can be fixed in the coating station to one of the six walls of the chamber by means of its mounting base. Thus, the use of the robot gains a high flexibility compared to conventional and known in the art spray nozzle rings on which the spray nozzles are manually fixed and aligned with the center of the ring aligned.

In a further embodiment, a plurality of coating stations are arranged between the inlet guide element and the outlet guide element in the transport direction one behind the other, each with at least one robot. As a result, the layer thickness can be doubled, tripled or arbitrarily multiplied depending on the number of coating stations arranged one behind the other in a simple manner. If only one spray nozzle of a coating station is switched on, a primer can be achieved. If two spray nozzles are driven at the same time one behind the other, the result is a double anti-friction coating thickness. If all successively connected spray nozzles of the coating stations arranged one behind the other are switched on, then a multiple layer thickness can be achieved.

In a further embodiment, it is provided that a single robot is arranged in the coating station and the holding device holds three spray nozzles at the free end of the working arm such that a first spray nozzle of the holding device perpendicular to an upper surface of the plastic profile strand, a second spray nozzle of the holding device a right side surface of the plastic profile strand and a third spray nozzle of the holding device are aligned with a left side surface of the plastic profile strand. Such a holding device, which is held by a working arm of a programmable robot, has the advantage that on the one hand all three spray nozzles can be swiveled in and out simultaneously, on the other hand, only the holder for all three spray nozzles can change the spray jet orientation relative to the transport direction, so that an individual control of the orientation angle of the individual spray nozzles is not provided.

In a further embodiment of the invention, three robots are arranged in the coating station, each holding a holding device for a single spray nozzle at the free end of the working arm such that a first spray nozzle of a first robot perpendicular to a top surface of the plastic profile strand, a second spray nozzle of a second Robot are aligned on a right side surface of the plastic profile strand and a third spray nozzle of a third robot on a left side surface of the plastic profile strand. Although this increases the number of programmable robots to be used, significantly more variants can be provided for coating a plastic profile strand with appropriately stored coating programs.

A contribution to the reproducibility are also the embodiments of the inlet guide elements and the Auslassführungselemente, the friction-free record at high speed of up to 20 m / min transported plastic profile strand and should lead. Through the inlet guide element and the outlet guide element ensures that the distance between the plastic profile strand and the spray nozzles is hewn and that no warping, for example, by friction effects on the inlet or outlet guide elements occur. For this purpose, the inlet guide element and the outlet guide element each have a roller bearing mounted support roller, which define the distance to the spray nozzles and carry the plastic profile strand.

Furthermore, it is provided that at least the inlet guide element has a support roller and transversely to the transport direction of the plastic profile strand adjustable right and left bearings mounted side rollers. The side rollers ensure that the plastic profile strand can be guided centrally through the coating station or the coating stations.

For this purpose, it is provided that the roller bearings mounted side rollers and the support roller are arranged such that they form an upwardly open trapezoid in cross-section, which is to the support role rejuvenated. This can be achieved that the profile is stored and guided by the lateral guide rollers centered on the support rollers.

An embodiment of the invention will now be explained in more detail with reference to the accompanying figures.

1 shows a schematic view of a coating station of a coating apparatus according to an embodiment of the invention;

2 shows a schematic diagram of an embodiment of the invention with two successively arranged coating stations and a cross-flow direction component of the spray nozzles;

3 shows a schematic diagram of an embodiment of the invention with two successively arranged coating stations and a Gegenstromrichtungskomponente the spray nozzles;

4 shows a schematic diagram of an embodiment of the invention with two successively arranged coating stations and an increased countercurrent component of the spray nozzles;

5 shows a schematic diagram of an embodiment of the invention with two successively arranged coating stations and a DC direction component of the spray nozzles;

6 shows a schematic diagram of an embodiment of the invention with two successively arranged coating stations and an enlarged DC direction component of the spray nozzles;

7 shows a schematic view of a coating device according to 1 in cooperation with a plastics extruder plant.

1 shows a schematic view of a coating station 3 a coating device 1 in a chamber 10 is arranged. In this case, the chamber 10 a bottom wall 23 and a top wall 24 as well as side walls 21 and 22 on. The coating station shown here 3 is transverse to the transport direction of the plastic profile strand 2 shown, so that the outlines of a vehicle sealing profile 16 as plastic profile strand 2 are visible. On through this coating station 3 transported plastic profile strand 2 are in the chamber 10 three sprays 15 directed.

The three sprays 15 be from three spray nozzles 6 . 26 and 27 educated. Here are the spray nozzles 6 . 26 and 27 each in a holding device 8th fixed at the free end 28 each from a working arm 9 a programmable robot 7 . 20 respectively. 35 are arranged. The robot 7 is via a mounting base 25 on the top wall 24 the chamber 10 fixed and can the spray nozzle 6 , above the plastic profile strand 2 is arranged, with respect to a transport direction of the plastic profile strand 2 by means of appropriate changes of direction both on the mounting base 25 around the axis 39 as well as at the free end 28 around the axis 38 of the working arm 9 of the preprogrammed robot 7 to adjust. It can by a rotational movement about the axis 39 of the mounting base 25 the spray nozzle 6 be pivoted from the working position shown here into a shutdown position. By a corresponding rotation about the axis 38 at the free end 28 of the working arm 9 can the nozzle 6 from the shown here vertical upper beam direction S _O in any angle to the transport direction of the plastic profile strand 2 be aligned.

The top first spray nozzle 6 is from two supply lines 18 and 19 supplied, with a first supply line 18 an aqueous liquid of the spray nozzle 6 feeds and a second supply line 19 the spray nozzle 6 a liquid emulsifying in the aqueous liquid a Gleitlacks consisting essentially of a plastic polymer, supplies. By appropriate turbulence, the two liquids in the nozzle volume 29 mixed intensely and on an upper surface 31 the plastic profile strand 2 sprayed.

The plastic profile strand 2 It has a temperature of over 100 ° C, so that the aqueous liquid evaporates and a Gleitlackschicht 17 forms, wherein the thickness of the Gleitlackschicht 17 here for illustrative reasons exaggerated. By a not visible here, but in 7 shown, sequentially arranging a plurality of upper first nozzles 6 may be a doubling or tripling of the layer thickness of the Gleitlackschicht 17 like it 1 already shows on the upper surface 31 the plastic profile strand 2 towards the left and right side coatings can be achieved.

Both on the right side wall 22 the chamber 10 as well as on the left sidewall 21 is each another robot 20 respectively. 35 arranged, which in this embodiment the same construction as the first robot 7 and thus can perform the same pan and rotate functions as discussed above. The right robot 20 holding with his working arm 9 a holding device 8th , where the free end 28 of the support arm about an axis 38 can be rotated or pivoted, so that the right beam direction S _R can be adjusted preprogrammed with respect to the transport direction of the plastic profile strand. It can also be done by pivoting around the axis 38 the right second spray nozzle 26 be pivoted from the working position shown here into a shutdown position. The same possibility exists for the left spray nozzle 27 , so that the beam direction S _L can be set preprogrammed and can be additionally pivoted by turning from the working position shown here in a rest or shutdown.

With 2 a schematic diagram of an embodiment of the invention is shown in the two successively arranged coating stations 3 and 30 in each case at least one spray nozzle 6 and 26 exhibit. The spray nozzles are vertical or transverse to the transport direction R of the plastic profile strand 2 aligned. To the effect of the two spray nozzles 6 and 26 , which in the cross-flow direction a spray 15 to the in the transport direction R at about 20 m / min moving extruded vehicle gasket profile 16 Spray on, increase, is essentially on a top surface 31 of the profile a Gleitlackschicht 17 applied. To illustrate this is the uncoated extruded vehicle gasket profile 16 before coating through the two cross-flow aligned spray nozzles 6 and 26 the coating stations 3 and 30 shown and after coating forming vehicle sealing profile 16 with a Gleitlackschicht 17 , Here, the thickness d is shown to be excessively large, to show that the upper surface 31 the vehicle sealing profile 16 through the cross-flow direction 55 aligned spray nozzles 6 and 26 stronger than the side surfaces 32 and 33 is coated.

While here the coating is relatively symmetrical to the top surface 31 due to the cross-flow directed spray nozzles 6 and 26 can be formed with the following 3 to 6 be shown that different spray angle and thus different coating direction components shift the maximum of the layer thickness d _max . Also, in the following 3 to 6 to see that the full thickness of the sliding layer, as in 2 is not comparable with the applied at an angle α sliding layer thicknesses.

Components with the same functions in the following 3 to 6 are marked with the same reference numerals and not explained in detail.

3 shows a schematic diagram of an embodiment of the invention with two successively arranged coating stations 3 and 30 as in 2 but the spray nozzles are 6 and 26 in a countercurrent direction component 45 aligned. On the one hand, this can no longer make up the full layer thickness, as in 2 is shown on the upper surface 31 On the other hand, the maximum of the maximum thickness d _max shifts to the contra-flow-side contour region of the vehicle sealing profile 16 ,

4 shows a schematic diagram of an embodiment of the invention with two successively arranged coating stations 3 and 30 and an enlarged countercurrent component 45 the spray nozzles 6 and 26 , As a result of the distribution of the spray over a larger profile surface, the maximum coating thickness d _max will now decrease due to a further increase in the countercurrent component while the orientation angle α to the transport direction R is reduced and the maximum will continue to shift in the direction of the contour region which is arranged in the countercurrent direction ,

5 and 6 show the effect due to a change of the angle α to the transport direction R to form a DC-direction component 50 the spray jet 15 ,

It shows 5 a schematic diagram of an embodiment of the invention with two successively arranged coating stations 3 and 30 and a direct current direction component 50 the spray nozzles 6 and 26 , The maximum d _{max of} the coating thickness shifts from the left side surface shown in the preceding figures 33 the vehicle sealing profile 16 on the right side surface 32 the sealing profile, wherein at the same time now also a sealing profile extension 42 co-coated with an extreme reverse current arrangement, such as 4 shows, practically no longer was coated.

6 shows a schematic diagram of an embodiment of the invention with two successively arranged coating stations 3 and 30 and an enlarged DC-direction component 50 the spray nozzles 6 and 26 , wherein the angle α to the transport direction R is further reduced. This also shifts the maximum thickness d _max in the direction of the right side surface 32 the vehicle sealing profile 16 , Thus, by the holder of the nozzles 6 and 26 by means of a programmable robot, the maximum thickness d _{max of} the bonded coating 17 moved to where the greatest wear for the vehicle sealing profile 16 is expected.

With 7 is a schematic view of the coating device 1 according to 1 in cooperation with a plastics extruder plant 14 shown. The plastic extruder plant 14 has an extruder device 13 and a tempering device 41 on, in which the extruded plastic profile strand 2 from the extruder device 13 vulcanized or annealed to correspondingly improved elastomeric properties for the plastic profile strand 2 to reach. The plastic profile strand passes through 2 in the transport direction R at the same speed both the tempering device 41 as well as the subsequent coating device 1 ,

The coating device 1 has a chamber 10 on with an inlet opening 11 for the extruded plastic profile strand 2 , The plastic profile strand 2 is from an inlet guide element 4 taken and an outlet guide element 5 an outlet opening 12 the chamber 10 fed. In this case, the input element 4 , like it 7A shows a roller bearing bearing roller 34 and side rolls 36 and 37 having the plastic profile strand 2 lead laterally. These are the side rolls 36 and 37 with the carrying roller 34 a to the carrier role 34 tapered trapezoid, leaving the plastic profile strand 2 on the carrying role 34 led out.

In the in 7 shown chamber 10 are three coating stations 3 . 30 and 40 one behind the other in the transport direction R of the plastic profile strand 2 arranged. In each of these coating stations 3 . 30 and 40 can, like 1 shows several spray nozzles over the circumference of the plastic profile strand 2 be arranged distributed. To simplify the illustration here are only vertically arranged spray nozzles 6 . 26 and 27 in the coating stations 3 . 30 and 40 shown, each spray nozzle by a corresponding robot 7 . 20 and 35 on the plastic profile strand 2 at about 20 m / min in the direction of transport R the three coating stations shown 3 . 30 and 40 happens to be aligned.

If only one of these three consecutive coating stations 3 . 30 or 40 is in operation, so a relatively thin first layer thickness is achieved. By switching on two coating stations simultaneously, for example 3 and 30 . 3 and 40 or 30 and 40 If the layer thickness is doubled and by adding the third coating station shown here, a threefold increase in the thickness of the applied anti-friction coating layer can be achieved, as described, for example, in US Pat 1 already shown. Components with the same functions as in 1 are denoted by like reference numerals and are not discussed separately, so that to avoid repetition, another discussion of the 7 unnecessary.

LIST OF REFERENCE NUMBERS

1

coater

2

Plastic profile extrusion

3

coating station

4

Inlet guide element

5

outlet guide

6

first spray nozzle

7

robot

8th

holder

9

working arm

10

chamber

11

inlet port

12

outlet

13

extruder means

14

Plastic extrusion line

15

spray

16

Vehicle sealing profile

17

bonded coating

18

first supply line for aqueous liquid

19

second supply line for emulsifying bonded coating

20

robot

21

Side wall

22

Side wall

23

bottom wall

24

top wall

25

mounting base

26

spray nozzle

27

spray nozzle

28

free end of the working arm

29

nozzle volume

30

coating station

31

upper surface

32

side surface

33

side surface

34

supporting role

35

robot

36

side roll

37

side roll

38

axis

39

axis

40

coating station

41

Tempering unit

42

Sealing profile extension

45

Countercurrent direction component

50

DC directional component

55

Cross-flow direction component

d _max

maximum thickness of the bonded coating

R

transport direction

S

spray direction

T _ST

Temperature of the plastic profile strand

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19706804 A1 [0002, 0008]

Claims (15)

Coating device for a plastic profile strand ( 2 ) comprising: - an inlet guide element ( 4 ), which is formed, the plastic profile strand ( 2 ) in the coating device ( 1 ) to admit; An outlet guide element ( 5 ), which is formed, the plastic profile strand ( 2 ) from the coating device ( 1 ) omit - at least one spray nozzle ( 6 ), which is designed, the plastic profile strand ( 2 ), wherein a coating jet ( 15 ) of the at least one spray nozzle ( 6 ) by means of a working arm ( 8th ) of a freely programmable robot ( 7 ) to a transport direction (R) of the plastic profile strand ( 2 ) in the coating device ( 1 ), the direction being selected from a combination of a group consisting of a countercurrent direction component ( 45 ), a direct current direction component ( 50 ) and a cross-flow direction component ( 55 ). Coating device according to claim 1, wherein a chamber ( 10 ) with an inlet opening ( 11 ) and an outlet opening ( 12 ) the inlet guide element ( 4 ) and the outlet guide element ( 5 ) and the coating station ( 3 ) with at least one robot ( 7 ) and the at least one spray nozzle ( 6 ) having. Coating device according to claim 2, wherein the chamber ( 10 ) of the coating device ( 1 ) downstream with respect to an extruder device ( 13 ) of a plastics extruder plant ( 14 ) is arranged. Coating device according to claim 2 or claim 3, wherein the chamber ( 10 ) of the coating device ( 1 ) in a region of the extruded plastic profile strand ( 2 ) is arranged, in which the plastic profile strand ( 2 ) has a temperature T _ST of T _ST ≥ 100 ° C. Coating device according to one of the preceding claims, wherein the working arm ( 9 ) is formed, the holding device ( 8th ) with the at least one spray nozzle ( 6 ) preprogrammed on the plastic profile strand ( 2 ) under a spray angle (α) and the holding device ( 8th ) of the plastic profile strand ( 2 ), and wherein the spray nozzle ( 6 ), pre-programmed a spray jet ( 15 ) on and off. Coating device according to one of the preceding claims, wherein the coating station ( 3 ) is formed, for coating the plastic profile strand ( 2 ) of a vehicle sealing profile ( 16 ) with a Gleitlackschicht ( 17 ). Coating device according to one of the preceding claims, wherein the spray nozzle ( 6 ) a first supply line ( 18 ) for an aqueous liquid and a second supply line ( 19 ) for a lubricating liquid emulsifying in aqueous liquid. Coating device according to claim 7, wherein the first supply line ( 18 ) and the second supply line ( 19 ), preprogrammed a predetermined mixing ratio of an aqueous liquid and an aqueous liquid emulsifying lubricating paint of the spray nozzle ( 6 ). Coating device according to one of claims 2 to 8, wherein the chamber ( 10 ) four side walls ( 21 . 22 ), a bottom wall ( 23 ) and a ceiling wall ( 24 ), and wherein the robot ( 7 ) a mounting base ( 25 ) and in the coating station ( 3 ) on one of the walls ( 21 to 24 ) the chamber ( 10 ) by means of its mounting base ( 25 ) is fixed. Coating device according to one of the preceding claims, wherein several coating stations ( 3 . 30 . 40 ) between the inlet guide element ( 4 ) and the outlet guide element ( 5 ) in the transport direction (R) in succession, each with at least one robot ( 7 . 20 . 35 ) are arranged. Coating device according to one of the preceding claims, wherein a single robot ( 7 ) in the coating station ( 3 . 30 . 40 ) is arranged and the holding device ( 8th ) three spray nozzles ( 6 . 26 . 27 ) at the free end ( 28 ) of the working arm ( 9 ) holds such that a first spray nozzle ( 6 ) of the holding device ( 8th ) perpendicular to an upper surface ( 31 ) of the plastic profile strand ( 2 ), a second spray nozzle ( 26 ) of the holding device ( 8th ) on a right side surface ( 32 ) of the plastic profile strand ( 2 ) and a third spray nozzle ( 27 ) of the holding device ( 8th ) on a left side surface ( 33 ) of the plastic profile strand ( 2 ) is aligned. Coating device according to one of claims 1 to 10, wherein three robots ( 7 . 20 . 35 ) in the coating station ( 3 ) are arranged and in each case a holding device ( 8th ) for a single spray nozzle ( 6 . 26 . 27 ) at the free end ( 28 ) of the working arm ( 9 ) such that a first spray nozzle ( 6 ) of a first robot ( 7 ) perpendicular to an upper surface ( 31 ) of the plastic profile strand ( 2 ), a second spray nozzle ( 26 ) of a second robot ( 20 ) on a right side surface ( 32 ) of the plastic profile strand ( 2 ) and a third spray nozzle ( 27 ) of a third robot ( 35 ) on a left side surface ( 33 ) of the plastic profile strand ( 2 ) is aligned. Coating device according to one of the preceding claims, wherein the inlet guide element ( 4 ) and the outlet guide element ( 5 ) each bearing mounted roller bearing ( 34 ) having. Coating device according to one of the preceding claims, wherein at least the inlet guide element ( 4 ) a carrying role ( 34 ) and transversely to the transport direction (R) of the plastic profile strand ( 2 ) adjustable right and left roller bearings mounted side rollers ( 36 . 37 ) having. Coating device according to claim 13 or claim 14, wherein the roller bearings are mounted side rollers ( 36 . 37 ) and the carrying roller ( 34 ) are arranged such that they form in cross-section an upwardly open trapezoidal to the support roller ( 34 ) tapers.

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