Sealing application device with multi-element pressure roller

Abstract

The present invention relates to an application device (1) for applying a sealing profile (2) to a body component used to close a body opening, comprising a rolling head (3) for applying the sealing profile (2) to a receiving surface of the body component and a cleaning unit (5) positioned upstream of the rolling head (3) with respect to the receiving surface of the body component for mechanically cleaning the receiving surface, wherein the cleaning unit (5) comprises a pressure roller (6). The pressure roller (6) comprises a roller base element made of a first material, which extends across the width of the pressure roller (6). Furthermore, the pressure roller (6) comprises a roller center element made of a second material, which is arranged centrally on the roller base element and has a smaller width than the roller base element.In addition, the pressure roller (6) comprises an outer roller element made of a third material, wherein the outer roller element is arranged on the roller base element and on the roller center element, surrounding the roller center element. The third material has a lower hardness than the second material and the first material.

Description

[0001] The invention relates to an application device for applying a sealing profile to a body component used to close a body opening, comprising a rolling head for applying the sealing profile to a receiving surface of the body component and a cleaning unit positioned upstream of the rolling head with respect to the receiving surface of the body component for mechanically cleaning the receiving surface. The cleaning unit comprises a pressure roller, which is particularly designed to press a cleaning element against the receiving surface. A generic application device is described in detail in DE 10 2017 221 018 B3. Another generic application device is disclosed in DE 10 2022 206 369 B4.

[0002] The sealing profiles applied to the body component are intended in particular to create a sealed connection between a body opening and the closing element inserted into it. Such a closing element can in particular be a door, a trunk lid, or a sunroof element. The following will look at a vehicle door as an example, although the stage in which the sealing profile is applied to the vehicle door can also be referred to as a door assembly. For example, a method known as "direct rolling" for applying a sealing profile to a door assembly is known. Here, the sealing profile is conveyed from an endless roller by means of a conveyor device and applied via a rolling head. The advance of the sealing profile onto the door assembly is controlled accordingly.The door assembly itself is movably mounted in a movable mounting device, for example, via an industrial robot, and is guided past the stationary rolling head, which applies the sealing profile to the door assembly. Once the sealing profile has been applied around the door assembly, a cutting knife cuts the sealing profile to cut it to length from the endless roll. After this, both butt ends must be brought closer together to create a virtually seamless, continuous sealing profile, if possible. Such application is also possible with a mobile application head, such as that disclosed in DE 10 2022 206 369 B4, wherein the application head is guided along the fixed body component to apply the sealing profile.

[0003] Sealant applications are typically performed within normal production environments, where dust-free conditions cannot be guaranteed. Furthermore, the buildup of a lubricating film on the body component during handling processes cannot be ruled out. To ensure good bonding quality, at least the receiving surface of the body component must be free of dust, moisture, and lubricant residues. These contaminants can be removed using a cleaning unit included in the application device, in particular as described in DE 10 2017 221 018 B3. The leading pressure roller of the cleaning unit is adjusted to the required Y-coordinate and pressed against the body component by a spring mechanism, which can be pneumatically configured, in particular, with a mechanical cleaning element, in particular a cleaning fleece.

[0004] A disadvantage here has been shown to be that unsatisfactory cleaning results are achieved with complex component geometries, particularly in the area of ​​so-called S-bends or in the area of ​​corners, in particular because angular deviations of a component flange cannot be compensated for or can only be compensated for insufficiently.

[0005] Against this background, it is an object of the present invention to provide an application device with an improved cleaning unit with which better cleaning results can be achieved with complex component geometries, in particular in the area of ​​S-bends or in the area of ​​corners.

[0006] To achieve this object, an application device according to claim 1 is proposed. Further advantageous embodiments of the invention are described in the dependent claims and the description and illustrated in the figures.

[0007] The proposed solution provides an application device for applying a sealing profile to a body component used to close a body opening. The application device has a rolling head for applying the sealing profile to a receiving surface of the body component and a cleaning unit positioned upstream of the rolling head with respect to the receiving surface of the body component for mechanically cleaning the receiving surface. The cleaning unit comprises a pressure roller, which comprises a roller base element made of a first material and is rotationally symmetrical with respect to a rotational axis of the pressure roller, a roller center element made of a second material and is rotationally symmetrical with respect to the rotational axis of the pressure roller, and an outer roller element made of a third material and is rotationally symmetrical with respect to the rotational axis of the pressure roller.The third material has a lower hardness, in particular a lower hardness value, further in particular a lower Shore hardness, than the second material and than the first material. Furthermore, it is particularly provided that the roller base element extends across the width of the pressure roller, that the roller center element is arranged centrally with respect to the roller base element and has a smaller width than the roller base element at least in a region of a largest diameter of the roller center element, and that the roller outer element is arranged on the roller base element and on the roller center element, surrounding the roller center element.Advantageously, this pressure roller with materials of different hardness or elasticity ensures that angular deviations of a component flange of a receiving surface of the body component can be compensated for by "rebounding" the pressure roller, wherein the material of the outer roller element is advantageously significantly softer than that of the central roller element.

[0008] Furthermore, it is particularly provided that the cleaning unit further comprises a mechanical cleaning element and is advantageously designed to subject the cleaning element to a circular movement along the receiving surface independently of the application movement of the roller head, wherein the pressure roller is advantageously designed to press the cleaning element against the receiving surface. The mechanical cleaning element is, in particular, a cleaning fleece that is guided over the pressure roller. The term "mechanical cleaning element" refers to the physical operating principle according to which contaminants are removed through physical contact between the cleaning element and the surface to be cleaned.Advantageously, the cleaning unit is designed so that the cleaning element can perform an independently controlled orbital movement, which can be superimposed on the actual application movement and is not completely dependent on it.

[0009] This makes it advantageous to adapt the rotational speed and hence the intensity of the cleaning to suit the degree of contamination. In particular, it can be provided that the cleaning element itself does not perform any rotational movement of its own during the application process, but merely moves at the application speed along the surface to be cleaned. Alternatively, however, it can also be provided that the cleaning element itself performs its own rotational movement. If the rotational speed of the cleaning element is rather low, the superposition of the application movement results in a speed of the cleaning element relative to the receiving surface that is only insignificantly higher than the application speed. However, the rotational speed of the cleaning element can also be set relatively high, particularly if the degree of contamination of the receiving surface is high.However, this can lead to increased wear and / or a shortened replacement interval for the cleaning element. The term "pre-positioned" specifically refers to the cleaning unit being positioned relative to the rolling head in such a way that—viewed in the direction of application—the cleaning unit contacts a point on the receiving surface of the body component before the rolling head passes over this same point to apply the sealing profile.

[0010] The application device itself can be designed as a stationary application device or as a mobile application device, which is arranged in particular on a robot arm.

[0011] Furthermore, it is particularly provided that the cleaning device comprises a roller arrangement, wherein the pressure roller is in turn comprised by the roller arrangement. Advantageously, the roller arrangement can be driven in order to set the cleaning element in a circular movement. A roller arrangement has the advantage that a cleaning element can be guided thereon in a flexible configuration. Furthermore, a low-friction drive of the cleaning element can be achieved via a roller arrangement. The pressure roller acts on the cleaning element against the receiving surface, wherein the pressure roller can advantageously be used to specifically influence the pressing behavior of the cleaning element against the receiving surface. In this case, it can also be provided in particular that the roller arrangement has a movement, in particular a rotary or linear movement, via which the pressure roller can be advanced relative to the receiving surface.The feed movement can advantageously also deform the pressure roller, in particular the outer roller element of the pressure roller, in a targeted manner.

[0012] In particular, one embodiment of the application device provides that the roller base element is formed integrally with the roller center element. In this case, the first material naturally corresponds to the second material. In particular, the roller base element and the roller center element together form a roller base center element. The roller base element is defined in particular by the region with the smallest diameter of the roller base center element on the outer sides of the pressure roller. The roller center element is defined in particular by the region with the largest diameter of the roller base center element. Preferably, the roller base center element is made of metal, and the roller outer element is preferably made of polyurethane.

[0013] An advantageous design variant, which has particular manufacturing advantages, provides that the roller base element is not formed integrally with the roller center element. The roller base element and the roller center element are in particular different, separate elements that are connected to one another. This design advantageously enables the use of a roller base element with a cylindrical shape. The roller center element is advantageously arranged centrally on the roller base element. The first material of the roller base element and the second material of the roller center element are in particular different, wherein the second material advantageously has a lower hardness than the first material and the third material advantageously has a lower hardness than the second material.Advantageously, the second material and the third material are elastically deformable, with the third material advantageously exhibiting greater elasticity than the second material. The use of different materials for the roller base element and the roller center element also advantageously results in manufacturing advantages. However, in this embodiment, the first material and the second material can also be the same or at least have the same hardness or essentially the same hardness.

[0014] According to an advantageous embodiment, the roller base element of the pressure roller has a constant diameter along its longitudinal direction. In particular, the roller base element can be designed as a bushing, which can be mounted on an axle or a bearing, in particular to enable the cleaning element to rotate. Furthermore, the constant diameter results in manufacturing advantages, especially when the roller base element is a separate component.

[0015] Furthermore, the roller base element is advantageously made at least partially of metal, in particular entirely of metal. The metal used is preferably aluminum, more particularly a hardenable aluminum alloy, which has proven particularly suitable. This allows the pressure roller to move in a stable manner, thus achieving good durability.

[0016] Furthermore, the roller center element of the pressure roller advantageously has a constant diameter along its longitudinal direction, particularly when the roller center element is not formed integrally with the roller base element. This results in further manufacturing advantages. In addition, the roller center element is designed in this way particularly well so that the cleaning element can be pressed with sufficient force onto the receiving surface to be cleaned. In this respect, a certain stability of the roller center element is also advantageous. In particular, one embodiment provides that the roller center element is at least partially made of foam rubber, in particular entirely made of foam rubber. A further advantageous embodiment provides that the roller center element is at least partially made of polyurethane, in particular entirely made of polyurethane.Advantageously, the material of the roller center element has the following or similar material properties, whereby similar material properties are in particular material properties that have values ​​that differ by up to 15%: rebound resilience of 60%; compression hardness of 1.05 N / mm. 2 (N: Newton; mm: millimeter) at 10% compression in the third loading cycle; static elastic modulus of 9.5 N / mm 2 at a pressure of 1.2 N / mm 2 ; dynamic elastic modulus of 16 N / mm 2 at a pressure of 1.2 N / mm 2 and 10 Hz (Hz: Hertz).

[0017] The outer roller element can also have a constant diameter along its longitudinal direction. Advantageously, however, the pressure roller, especially the outer roller element of the pressure roller, has "excess" soft material on the outer edges, which advantageously allows for a stronger "rebound" effect.

[0018] According to a further advantageous embodiment, the outer roller element of the pressure roller therefore has a diameter that decreases from its outer sides to the center along its longitudinal direction. The outer surface of the outer roller element can therefore have a substantially concave shape. Various designs can be provided for the specific contour of the outer surface of the outer roller element. One design that has proven particularly advantageous provides that the diameter of the outer roller element decreases linearly from the outer sides of the outer roller element to the center of the outer roller element. The pressure roller therefore has the shape of two truncated cones arranged next to one another, which are connected to one another by the truncated cones.Particularly good cleaning results, even on difficult component geometries, in particular in the area of ​​S-bends and in the area of ​​corners, were achieved with advantageous designs in which a pitch angle of the linear course of the diameter of the outer roller element from outside to inside, i.e. from a respective outer side of the outer roller element to the middle between the two outer sides of the outer roller element, is in particular between -10° and -30°, further in particular between -15° and -25°, further in particular -20°.

[0019] Furthermore, it is particularly provided that the outer roller element has the same width as the base roller element. However, a design is also provided in which the outer roller element is formed in two parts, and the outer roller element encloses the center roller element with one part each on the right and left, with the outer roller element projecting beyond the center roller element. The outer roller element can in particular be formed in two parts.

[0020] According to a further advantageous embodiment, the ratio of the outer diameter of the roller outer element, i.e. the diameter on the outer sides of the roller outer element, in particular the maximum diameter of the roller outer element, to the largest diameter, i.e. the maximum diameter, of the roller center element is between 1 and 2, more particularly between 1.3 and 1.7, more particularly 1.5. The ratio of the inner diameter of the roller outer element, i.e. the diameter in the middle region of the roller outer element, in particular the minimum diameter of the roller outer element, is advantageously greater than 1 and is in particular between 1 and 1.3, more particularly 1.1. In this way, the pressure roller advantageously has a particularly suitable amount of "excess" soft material, whereby a particularly good "rebound" effect is achieved.

[0021] In particular, it is provided that the outer roller element is at least partially made of foam rubber, in particular entirely of foam rubber. If both the roller center element and the outer roller element are made of foam rubber, the foam rubber of the outer roller element is preferably more elastically flexible than the foam rubber of the roller center element.

[0022] A further advantageous embodiment provides that the outer roller element is at least partially made of polyurethane, in particular entirely of polyurethane. Advantageously, the material of the outer roller element has the following or similar material properties, with similar material properties being, in particular, material properties that differ by up to 15%: rebound resilience of 55%; compression hardness of 0.05 N / mm 2 at 10% compression in the third loading cycle; static elastic modulus of 0.2 N / mm 2 at a pressure of 0.042 N / mm2 ; dynamic elastic modulus of 0.65 N / mm 2 at a pressure of 0.042 N / mm 2 and 10 Hz. With such a material, angular deviations of a component flange to be cleaned can be particularly well compensated by a "rebound" of the pressure roller.

[0023] According to a further advantageous embodiment, the ratio of the width of the roller center element in the region of the largest diameter of the roller center element to the width of the roller base element is between 0.18 and 0.35, in particular between 0.2 and 0.25. If the diameter of the roller center element is constant, the ratio of the width of the roller center element to the width of the roller base element is advantageously between 0.18 and 0.35, in particular between 0.2 and 0.25. This ratio advantageously ensures, on the one hand, that sufficient force can be exerted by the pressure roller during cleaning and, on the other hand, that the desired "rebound" effect is achieved.

[0024] The ratio of the maximum diameter of the roller center element to the diameter of the roller base element, in particular to the diameter of the roller base element on the outer sides of the pressure roller, is advantageously between 1.5 and 2.5, in particular between 1.8 and 2.2, more particularly 2. Such a ratio has proven advantageous in tests with regard to the cleaning result to be achieved with more complicated component geometries.

[0025] A further advantageous embodiment provides for the roller center element and the roller outer element to be applied as coatings to the roller base element. Advantageously, a pressure roller can be manufactured cost-effectively in this way. Furthermore, such a design achieves good durability.

[0026] Further advantageous details, features, and design details of the invention are explained in more detail in connection with the exemplary embodiments shown in the figures (hereinafter referred to as Figure). Fig. 1 shows a perspective view of an embodiment of an application device designed according to the invention; Fig. 2 shows a perspective view of a section of a further embodiment of an application device designed according to the invention; Fig. 3 shows an embodiment of a pressure roller designed according to the invention for the cleaning unit of an application device in a sectional view along a longitudinal direction of the pressure roller; Fig. 4a each shows a sectional view of the pressure roller according to Fig. 3 when applied to a receiving surface, which in the various representations differs in relation to Fig. 4c the pressure roller is aligned; and Fig. 5 shows a further embodiment of a pressure roller designed according to the invention for the cleaning unit of an application device in a sectional view along a longitudinal direction of the pressure roller.

[0027] In the various figures, identical parts are generally provided with the same reference symbols and are therefore sometimes explained only in connection with one of the figures.

[0028] In Fig. Figure 1 shows an exemplary embodiment of a mobile application device 1 arranged on a robot arm 9 for applying a sealing profile 2 to a body component used to close a body opening. The application device 1 has a rolling head 3 for applying the sealing profile 2 to a receiving surface of the body component and a cleaning unit 5 positioned in front of the rolling head 3 with respect to the receiving surface of the body component for mechanically cleaning the receiving surface. The cleaning unit 5 comprises a pressure roller 6 and a mechanical cleaning element 11, which in this exemplary embodiment is designed as a belt-like cleaning fleece.In this embodiment, the cleaning unit 5 comprises a drivable roller arrangement 51, wherein the cleaning unit 5 with the roller arrangement 51 is designed to guide the cleaning element 11 along the receiving surface with a circular movement independent of the application movement of the rolling head 3, wherein the pressure roller 6 presses the cleaning element 11 against the receiving surface to be cleaned.

[0029] The pressure roller 6 comprises a roller base element, which is rotationally symmetrical with respect to a rotational axis of the pressure roller 6 and is made of a first material with a first hardness value, wherein the roller base element extends across the width of the pressure roller 6. Furthermore, in this exemplary embodiment, the pressure roller 6 comprises a roller center element, which is rotationally symmetrical with respect to the rotational axis of the pressure roller 6 and is made of a second material with a second hardness value. The roller center element is arranged centrally on the roller base element and has a smaller width than the roller base element in the region of the maximum diameter of the roller center element.Furthermore, the pressure roller 6 comprises a roller outer element formed rotationally symmetrically with respect to the rotational axis of the pressure roller 6, made of a third material with a third hardness value. The roller outer element is arranged on the roller base element and on the roller center element, completely surrounding the roller center element. In this exemplary embodiment, the first hardness value is greater than the second hardness value, and the second hardness value is greater than the third hardness value. Thus, the roller outer element is softer than the roller center element, and the roller center element is softer than the roller base element.

[0030] In the Fig. In the embodiment shown in Figure 1, the application device 1 further comprises other different functional modules, such as a drilling unit 10, which will not be discussed further here.

[0031] A section of a further embodiment of an application device 1 designed according to the invention is shown in Fig. 2. The application device 1 according to Fig. 2 comprises essentially the same features as those described with reference to Fig. 1 explained application device 1, wherein in Fig. 2 the cleaning unit 5 with the roller assembly 51, the mechanical cleaning element 11 and the pressure roller 6 is shown in more detail. In addition, Fig. 2 shows an example of a section for a receiving surface 4 of a body component, to which a sealing profile 2 is applied using the rolling head 3 after cleaning the receiving surface 4 by means of the cleaning unit 5.

[0032] An advantageous embodiment for a pressure roller 6, in particular for the pressure roller 6 of the application device 1 according to Fig. 1 or according to Fig. 2, is a sectional view in the longitudinal direction L of the pressure roller 6 in Fig. 3. In this exemplary embodiment, the pressure roller 6 comprises a roller base element 61 made of a first material and designed to be rotationally symmetrical with respect to a rotation axis 7 of the pressure roller 6, the roller base element 61 extending over the entire width B1 of the pressure roller 6. The width B1 of the pressure roller in this exemplary embodiment is 18 mm. The roller base element 61 of the pressure roller 6 has a constant diameter D1 along its longitudinal direction L, which diameter is 8 mm in this exemplary embodiment. The wall thickness of the roller base element 61 in this exemplary embodiment is 1.2 mm. The material from which the roller base element 61 is made is an aluminum-zinc alloy in this exemplary embodiment.

[0033] The pressure roller 6 further comprises a roller center element 62 made of a second material, which in this exemplary embodiment is a polyurethane material, which is rotationally symmetrical with respect to the rotation axis 7 of the pressure roller 6. The second material therefore has greater elasticity than the first material. The roller center element 62 is arranged centrally on the roller base element 61 and has a width B2 that is less than the width B1 of the roller base element 61. In this exemplary embodiment, the width B2 of the roller center element 62 is 4 mm. The ratio of the width B2 of the roller center element 62 to the width B1 of the roller base element 61 is thus approximately 0.22 in this exemplary embodiment. The roller center element 62 of the pressure roller 6 has a constant diameter D2 along its longitudinal direction L. This diameter D2 is 16 mm in this exemplary embodiment.The ratio of the diameter D2 of the roller center element 62 to the diameter D1 of the roller base element 61 is therefore 2 in this embodiment.

[0034] Furthermore, the pressure roller 6 comprises a roller outer element 63 made of a third material, which is rotationally symmetrical with respect to the rotational axis 7 of the pressure roller 6. In this exemplary embodiment, a further polyurethane material is provided as the third material, which has a higher elastic resilience than the polyurethane material from which the roller center element 62 is made. In particular, the polyurethane material of the roller center element 62 is designed such that it essentially does not deform during use of the pressure roller 6, whereas the polyurethane material of the roller outer element 63 is designed such that it can deform elastically during use of the pressure roller 6, as shown in particular in Fig. 4a to Fig. 4c. The outer roller element 63 is, as shown in Fig. 3, the roller center element 62 is arranged surrounding the roller base element 61 and on the roller center element 62. The roller outer element 63 has the same width B1 as the roller base element 61, thus in this embodiment also a width B1 of 18 mm.

[0035] In this exemplary embodiment, the outer roller element 63 of the pressure roller 6 also has a diameter D3 that decreases from its outer sides 8 to the center M along its longitudinal direction L. The diameter D3 of the outer roller element 63 decreases linearly from the outer sides 8 of the outer roller element 63 to the center M of the outer roller element 63. At the outer sides 8, the diameter D3A of the outer roller element 63 in this exemplary embodiment is 24 mm and decreases to the diameter D3l towards the center M. The pitch angle β of the linear progression of the diameter D3 of the outer roller element 63 in this exemplary embodiment is -20° from the respective outer side 8 to the center M, wherein the ratio of the diameter D3A of the outer roller element 63 at the outer sides 8 to the diameter D2 of the central roller element 62 is 1.5.

[0036] In this exemplary embodiment, the roller center element 62 and the roller outer element 63 are applied as coatings to the roller base element 61 and thus form the pressure roller 6 as a non-destructively detachable unit, which can be applied with the roller base element 61 to an axle or to a bearing, in particular to a rolling bearing.

[0037] In Fig. 4a to Fig. 4c is an example of a schematic representation of how the pressure roller 6 is moved according to Fig. 3, with the same alignment, adapts to angular deviations with respect to the receiving surface 4 to be cleaned by the "rebound" of the elastic material of the outer roller element 63. Due to the diameter D3 of the outer roller element 63, which decreases from the outer sides 8 to the center M, a stronger "rebound" effect can also be advantageously achieved due to the "excess" soft material in the outer areas.

[0038] A further embodiment for a pressure roller 6, which is also provided in particular with a Fig. 1 or Fig. 2 shown application device 1 can be used, is shown in a sectional view in the longitudinal direction L of the pressure roller 6 in Fig. 5. In this exemplary embodiment, the pressure roller 6 comprises a roller base element 61 that is rotationally symmetrical with respect to a rotational axis 7 of the pressure roller 6 and a roller center element 62 that is rotationally symmetrical with respect to the rotational axis 7 of the pressure roller 6. The roller base element 61 and the roller center element 62 are integrally formed and thus together form a roller base center element 612. In this exemplary embodiment, this roller base center element 612 is made of metal, in particular of an aluminum alloy.

[0039] Furthermore, the pressure roller 6 comprises a roller outer element 63 made of polyurethane, which is rotationally symmetrical with respect to the rotational axis 7 of the pressure roller 6 and which is elastically flexible and in particular elastically compressible, in particular as shown in Fig. 4a to Fig. 4c. The outer roller element 63 has a significantly lower hardness than the roller base center element 612.

[0040] The roller base element 61, which in this exemplary embodiment merges seamlessly into the roller center element 62, extends over the entire width B1 of the pressure roller 6. The roller center element 62, in particular the region BE62 of the roller center element 62 with the maximum diameter D2, is arranged centrally with respect to the roller base element 61 and has a smaller width B2 than the roller base element 61 in the region BE62 of the largest diameter D2 of the roller center element 62.

[0041] The outer roller element 63 is arranged on the roller base center element 612, surrounding the roller base center element 612, in particular applied as a coating to the roller base center element 612. The ratio of the maximum diameter D3A of the outer roller element 63 on the outer sides 8 of the pressure roller 6 to the largest diameter D2 of the roller center element 62 is between 1 and 2; in Fig. 5 approximately 1.5.

[0042] As in Fig. 5, in this exemplary embodiment, the roller center element 62 of the pressure roller 6 has a constant diameter D2 only in the region BE62 along its longitudinal extension direction L. The diameter of the roller base center element 612 increases from the outer sides 8, starting from the minimum diameter D1 to the maximum diameter D2, as shown in Fig. 5, in particular according to a quadratic function.

[0043] As in the embodiment according to Fig. 3, the outer roller element 63 of the pressure roller 6 has a maximum diameter D3A on its outer sides 8 along its longitudinal direction L, which decreases to the minimum diameter D3l toward the center M. The outer roller element 63 has the same width B1 as the base roller element 61.

[0044] The ratio of the width B2 of the roller center element 62 in the region BE62 of the largest diameter D2 to the width B1 of the roller base element 61 is between 0.18 and 0.35. The ratio of the maximum diameter D2 of the roller center element 62 to the minimum diameter D1 of the roller base element 61 is between 1.5 and 2.5; in Fig. 5 approximately 2.

[0045] The exemplary embodiments shown in the figures and explained in connection with them serve to explain the invention and are not limiting thereof. List of reference symbols 1 application device 2 sealing profile 3 rolling head 4 Mounting surface of the body component 5 Cleaning unit 51 Roller arrangement 6 pressure roller 61 Roller base element 62 roller center element 612 Roller base center element 63 Roller outer element 7 Rotation axis 8 Outside of the roller outer element (63) 9 Robot arm 10 drilling unit 11 mechanical cleaning element B1 Width of the pressure roller (6) B2 width of the roll center element (62) D1 Diameter of the roller base element (61) D2 Diameter of the roller center element (62) D3 Diameter of the roller outer element (63) D3A Diameter of the roller outer element (63) on the outer sides (8) D3l Diameter of the roller outer element (63) in the center (M) M Center of the roller outer element (63) BE62 Area of ​​the roller center element (62) with maximum diameter (D2) L Longitudinal direction β pitch angle

Claims

[1] Application device (1) for applying a sealing profile (2) to a body component used to close a body opening, comprising a rolling head (3) for applying the sealing profile (2) to a receiving surface (4) of the body component and a cleaning unit (5) positioned in front of the rolling head (3) with respect to the receiving surface (4) of the body component for mechanically cleaning the receiving surface (4), wherein the cleaning unit (5) comprises a pressure roller (6), characterized by , that the pressure roller (6) comprises a roller base element (61) made of a first material and designed to be rotationally symmetrical with respect to a rotation axis (7) of the pressure roller (6), wherein the roller base element (61) extends over the width (B1) of the pressure roller (6), that the pressure roller (6) comprises a roller center element (62) made of a second material and is rotationally symmetrical with respect to the rotation axis (7) of the pressure roller (6), wherein the roller center element (62) is arranged centrally with respect to the roller base element (61) and has a smaller width (B2) than the roller base element (61) at least in a region of a largest diameter (D2) of the roller center element (62), and that the pressure roller (6) comprises a roller outer element (63) made of a third material and designed to be rotationally symmetrical with respect to the rotation axis (7) of the pressure roller (6), wherein the outer roller element (63) is arranged surrounding the central roller element (62) on the roller base element (61) and on the central roller element (62), wherein the third material has a lower hardness than the second material and than the first material. [2] Application device (1) according to claim 1, characterized by that the roller base element (61) is formed integrally with the roller center element (62), wherein the first material corresponds to the second material. [3] Application device (1) according to claim 1, characterized by that the roller center element (62) is arranged on the roller base element (61). [4] Application device (1) according to claim 3, characterized by that the second material is a different material from the first material, and the second material has a lower hardness than the first material. [5] Application device (1) according to one of the preceding claims, characterized by that the roller base element (61) of the pressure roller (6) has a constant diameter (D1) over its longitudinal direction (L). [6] Application device (1) according to one of the preceding claims, characterized by that the roller center element (62) of the pressure roller (6) has a constant diameter (D2) over its longitudinal direction (L). [7] Application device (1) according to one of the preceding claims, characterized by that the outer roller element (63) of the pressure roller (6) has a diameter (D3A, D3l) which decreases from its outer sides (8) to the center (M) over its longitudinal direction (L). [8] Application device (1) according to claim 7, characterized by that the diameter (D3A, D3l) of the outer roller element (63) decreases linearly from the outer sides (8) of the outer roller element (63) towards the center (M) of the outer roller element (63). [9] Application device (1) according to claim 8, characterized bythat the pitch angle (β) of the linear progression of the diameter (D3) of the outer roller element (63) from a respective outer side (8) to the center (M) is between -10° and -30°. [10] Application device (1) according to one of the preceding claims, characterized by that the outer roller element (63) has the same width (B1) as the base roller element (61). [11] Application device (1) according to one of the preceding claims, characterized by that the ratio of the width (B2) of the roller center element (62) in the region of the largest diameter (D2) to the width (B1) of the roller base element (61) is between 0.18 and 0.

35. [12] Application device (1) according to one of the preceding claims, characterized by that the ratio of the maximum diameter (D2) of the roller center element (62) to the diameter (D1) of the roller base element (61) is between 1.5 and 2.

5. [13] Application device (1) according to one of the preceding claims, characterized by that the ratio of the diameter (D3A) of the outer roller element (63) on the outer sides (8) to the largest diameter (D2) of the central roller element (62) is between 1 and 2. [14] Application device (1) according to one of the preceding claims, characterized by that the roller base element (61) is at least partially made of metal. [15] Application device (1) according to one of the preceding claims, characterized by that the roller center element (62) is at least partially made of foam rubber, and / or that the roller outer element (63) is at least partially made of foam rubber. [16] Application device (1) according to one of the preceding claims, characterized by that the roller center element (62) is at least partially made of polyurethane; and / or that the roller outer element (63) is at least partially made of polyurethane. [17] Application device (1) according to one of the preceding claims, characterized by that the roller center element (62) and the roller outer element (63) are applied as coatings to the roller base element (61); or that the roller outer element (63) is applied as a coating to the roller base element (61) and the roller center element (62).

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