DEVICE FOR TREATING A MOLDING SURFACE, USE OF THE DEVICE AND PROCEDURE FOR TREATING A MOLDING SURFACE.

Abstract

The invention relates to a device for treating a molding surface (12) that limits a molding cavity of a mold or that is an outer surface of a mold core for producing a mold, the device comprising: a treatment carriage (22) having at least one treatment drum (32A, 32B) and / or at least one liquid application and / or demolding means; a guide arrangement (24, 52) connected to the treatment carriage (22) and serving to move the treatment carriage (22) over the molding surface (12); and a control unit (80) connected to the treatment carriage (22) and to the guide arrangement (24, 52).

Description

DEVICE FOR TREATING A MOLDING SURFACE, USE OF THE DEVICE AND PROCEDURE FOR TREATING A MOLDING SURFACE JQRQ ίη / ΖΖΠΖ / Β / ΥΙΛΙ The invention relates to a device for treating a molding surface that limits a molding cavity of a mold or that is a surface of a mold core, to the use of such a device, and to a method for treating a molding surface of a mold for producing a wind turbine blade or a molding surface of a mold core for producing a mold. It is well known in practice that wind turbine blades are manufactured as composite components produced in a mold of corresponding dimensions. Since wind turbine blades can be 50 to 100 meters long or even longer, and have a diameter exceeding 3 meters, the mold required for their production must be of a corresponding size. It has been demonstrated that the surface quality of the resulting wind turbine blades, which is exposed to the wind, has a significant impact on the electrical energy produced. The surface quality of the wind turbine blades can be influenced by the appropriate post-treatment after molding. Furthermore, the surface quality can be predetermined by the quality of the molding surface, which defines the mold cavity in which the wind turbine blade is produced.Therefore, it may be important to treat the mold surface before introducing the material that forms the wind turbine blade. However, the treatment procedure has been time-consuming due to the large dimensions of the mold. The object of the invention is to provide an optimized device for treating a molding surface. Furthermore, the object of the invention is to provide a time-saving procedure for treating a molding surface. According to the invention, these objects are achieved by means of the device having the characteristics of claim 1 and by means of the procedure having the characteristics of claim 16. Thus, according to the invention, a device is proposed for the treatment of a molding surface that limits a molding cavity of a mold or that is a surface of a mold core, the device comprising a treatment carriage having at least one liquid application and / or demolding means and / or at least one treatment drum, preferably two treatment drums, and a guide arrangement connected to the treatment carriage and serving to move the treatment carriage over the molding surface. Thus, the treatment carriage can have at least one treatment drum, enabling large-scale treatment of the molding surface, which is particularly convex or concave. For example, the treatment drum has a length of between 0.5 m and 1.5 m and a diameter of between 0.25 m and 0.75 m. The treatment carriage can be moved across the molding surface, particularly in an automated manner, by means of a guide system. Preferably, both the treatment carriage and the guide system are electrically connected to a control unit that manages the treatment process performed by the device. This allows the molding surface to be treated efficiently and quickly, even if the mold is large, as is the case with a mold used for the production of a wind turbine blade.Of course, it is also conceivable that the device according to the invention is used for the treatment of a molding surface of a mold core that predetermines the geometry or shape of the molding cavity when a mold is produced and whose outer surface essentially corresponds to a geometry of the workpiece that can be produced using the mold and that is a wind turbine blade, for example. Through the control device, which may have a user interface, a treatment procedure can be carried out automatically or semi-automatically based on parameters provided by a user through the user interface. In a preferred embodiment of the device according to the invention, the treatment carriage is a sanding carriage, meaning that the treatment drum is configured as a sanding drum. The molding surface can be sanded and thus treated by the rotation of the sanding drum. For example, the effective surface of the sanding drum is formed by abrasive fins oriented parallel to the axis of rotation of the sanding drum and defining its circumferential surface. The treatment cart may also be designed to additionally or alternatively serve to apply release agents, cleaning agents, sealing agents, or similar substances. Such liquid application is carried out with the aid of liquid application means, which may comprise a nozzle or an assembly of JQRQ I η / ΖΖΠΖ / Β / ΥΙΛΙ nozzles for the respective liquid. As already mentioned, the treatment cart preferably comprises two treatment drums. According to a preferred embodiment of the device according to the invention, the treatment cart comprises a support on which the treatment drums are mounted for rotation, in order to provide sufficient stability to the treatment cart. Wheels may also be mounted on the support, allowing the treatment cart to rest on the molding surface. It may be advantageous for the treatment cart to allow predetermined changes in movement, as determined by the device's guide arrangement according to the invention. This can be achieved, for example, if the treatment cart support comprises a joint through which two support units, each of which mounts one of the treatment drums, are movably connected, allowing the two treatment drums to pivot relative to each other. When the direction changes during the movement of the treatment cart, the treatment drums pivot relative to each other about the joint, the axis of which is preferably oriented at a right angle to the base plane of the treatment cart. In order to control the two treatment drums of the treatment cart separately and operate them at different rotational speeds, for example, it is advantageous for each of the two treatment drums to be equipped with a separate drive motor. The drive motors power the treatment drums via a belt drive, for example, or via another type of gear mechanism, such as a spur gear. To optimize the treatment force exerted on the molding surface by at least one treatment drum, it may be advantageous for the treatment carriage to include means for shifting its center of gravity. In particular, if the molding surface is curved and has a convex or concave shape, the center of gravity of the treatment carriage can be changed depending on its position on the molding surface, thus enabling the achievement of ideal treatment results. For example, the means for shifting the center of gravity comprise a movable weight. The movable weight may be arranged on a pivoting post mounted, in particular, on the support of the treatment cart, and whose pivoted position relative to the support may preferably be locked. In a particular embodiment of the device according to the invention, the JQRQ I η / ZZΖΠZ / Β / YILI guide arrangement for moving the treatment carriage over the molding surface comprises a cable system attached to the treatment carriage. The tensile forces exerted on the cable system move the treatment carriage over the molding surface. The cable system preferably comprises at least two cables, each attached to opposite sides of the treatment carriage by means of respective fastening elements and each capable of being wound onto a winch. The combined action of the two winches on the two cables allows the treatment carriage to be moved across the molding surface in a defined manner. The winches may be arranged on the treatment carriage itself and be part of the respective cable fastening elements, or they may be connected to the ends of the cables that are oriented away from the treatment carriage. In the case at hand, the term “cable” should be interpreted in its broadest sense and includes both classic cables or ropes, which can be made of metal or other material, as well as straps, chains, wires, tendons and other cable-like means that can be wound up. The fastening elements that secure the cable system cables to the treatment carriage can be configured with adjustable height. Adjusting the height of these fastening elements allows for the control of the forces exerted on the molding surface by the treatment drums. In order to move the guide arrangement on the mold, it comprises, for example, a gantry straddling the mold to which the cables of the cable system can be attached. To enable the treatment carriage to cover the entire molding surface, the gantry is preferably movable along the longitudinal direction of the mold or half of the mold. In an alternative embodiment of the device according to the invention, the guide arrangement comprises an actuator that can be positioned on and moved along a guide surface of the mold. For example, the actuators can be moved freely along the guide surfaces of the mold, which are adjacent to the molding surface to be treated, or by means of a rail or similar arrangement. In another particular embodiment of the device according to the invention, the guiding arrangement may comprise a rail system that is disposed on the molding surface to be treated and along which the treatment carriage itself is guided. The rail system is fixed to the molding surface by vacuum, for example. In order JQRQ I η / ZZΖΠZΖ / Β / YΙΛΙ to avoid leaving traces of the rail system on the molding surface, the rail system is removed during the treatment procedure that takes place by means of the treatment carriage. It is also conceivable to use a robot arm as part of the guidance arrangement. Of course, it is also conceivable that the different realizations of the guide arrangement can be combined appropriately with each other. In order to be able to test the surface quality before or after treatment using the treatment carriage, the device according to the invention may be provided with at least one corresponding sensor that measures the roughness, gloss, or other properties of the molding surface, for example. The sensor may be provided on the treatment carriage and / or in any other location, for example, in the guide arrangement or on an edge of the mold. The sensor may be a 3D scanner or any other suitable sensor capable of detecting the surface properties in question. Furthermore, the device according to the invention may comprise a suction device for material extracted from the molding surface by the treatment carriage. The suction device may be integrated into the treatment carriage or implemented as a separate device. If the device according to the invention is intended for wet sanding, a liquid storage and filtration system can be integrated into the treatment carriage or arranged in a separate device that can also be moved parallel to the treatment carriage during operation by means of a guide arrangement, for example. Such a system can operate with minimal water, as the filtration system allows for water reuse and enables a water cycle. This could eliminate the need for a drying process and reduce waste products generated during sanding. The hose conduits of the storage and filtration system are preferably attached to the treatment carriage. These can be used to apply water directly to the molding surface and also to collect the water and store it as wastewater, if necessary. The invention also relates to the use of the above-described device for treating a molding surface that limits a molding cavity of a mold for producing a wind turbine blade or that is an outer surface of a JQRQ I η / ZZΖΠZΖ / Β / YΙΛΙ mold core to form a molding cavity of a mold. The process according to the invention for treating a molding surface of a mold core for producing a mold or for treating a mold for producing a wind turbine blade comprises the following steps: place a treatment cart on the molding surface; activate the treatment cart; move the treatment carriage over the molding surface in the transverse direction of the mold; and move the treatment carriage over the molding surface in the longitudinal direction of the mold, so that the entire molding surface is treated by means of at least one treatment carriage according to a treatment pattern. According to a preferred embodiment of the process according to the invention, the treatment pattern, which is preferably predetermined, comprises treatment lanes along which the treatment carriage moves across the molding surface. The treatment pattern can be set by means of a control unit based on molding parameters. In the procedure according to the invention, the treatment carriage is preferably moved across the molding surface along parallel treatment lanes. It is preferred that, for the treatment of the molding surface, the rotation speed of at least one treatment drum of the treatment carriage and / or the center of gravity of the treatment carriage and / or the treatment pressure of at least one treatment drum of the treatment carriage are set and can be changed during the treatment procedure. In the procedure according to the invention, the parameters that define the molding surface are preferably provided in the control unit, in particular through a user interface, so that the treatment procedure carried out by the treatment carriage can be performed automatically or semi-automatically by control of the control unit. In the process according to the invention, the molding surface is preferably sanded by means of the treatment carriage. However, it is also conceivable that the treatment carriage is designed such that, additionally or alternatively, JQRQ ίη / ZZΖΠZ / E / YΙΛΙ is applied a release agent, a sealing agent, a cleaning agent and / or the like and that the molding surface is subjected to such treatment in the procedure according to the invention. Preferably, the method according to the invention uses a guide arrangement by which the treatment carriage can be moved in the transverse and longitudinal directions of the mold, i.e., moving the treatment carriage on the molding surface in accordance with the treatment pattern. For example, the guide arrangement comprises cables or cords by which the treatment carriage moves or travels on the molding surface and which move in a coordinated manner relative to each other. The drive of the guide arrangement is preferably controlled based on predetermined parameters of the molding surface, in particular by means of the control unit. In order to perform the displacement in the longitudinal direction of the mold, it is advantageous that the guide arrangement itself is displaced in the longitudinal direction of the mold, which can be done by means of a corresponding actuator, a rail system, a gantry and / or similar. In order to be able to apply ideal effective forces to the molding surface to be treated at all times, the center of gravity of the treatment carriage is changed according to the position of the treatment carriage on the molding surface in a specific embodiment of the procedure according to the invention. The procedure according to the invention may be an integral part of a procedure for the production of a wind turbine whose wind blades are manufactured in a mold according to a vacuum process. Other advantages and advantageous embodiments of the object of the invention are apparent from the description, the drawing, and the claims. Examples of embodiments of the object of the invention are illustrated in the drawing in a simplified schematic manner and will be explained in more detail in the following description. Figures 1a and 1af show the steps for producing a wind turbine blade using a mold. Figure 2 is a perspective view of a mold half during its surface treatment. Figure 3 is an enlarged illustration of area III of Figure 2. JQRQ ίη / ΖΖΠΖ / Β / ΥΙΛΙ Figures 4a and 4ac each show a section of the mold half of Figure 2 during surface treatment by means of a treatment trolley. Figure 5 shows a mold half of the type illustrated in Figure 2 with an alternative device for treating a molding surface. Figure 6 is an enlarged illustration of area VI in Figure 5. Figure 7 also shows a mold half of the type illustrated in Figure 2, but with another alternative embodiment of a device for treating a molding surface. Figure 8 is an enlarged illustration of area VIII of Figure 7. Figure 9 is a top perspective view of a treatment cart of the device illustrated in Figures 2 to 8 for the treatment of a molding surface. Figure 10 is a perspective bottom view of the treatment cart in Figure 9. Figure 11 is a top view of the treatment cart. Figure 12 is a bottom view of the treatment cart. Figure 13 is a side view of the treatment cart. Figure 14 is a front view of the treatment cart. Figure 15 is a schematic illustration of a vertically oriented treatment cart support; and Figure 16 is a view of the treatment cart support corresponding to Figure 15, but with two support units in a pivoted position. The production of a wind turbine blade 18 is illustrated in general terms by Figures 1a to 1f. For this purpose, mold cores (not shown) are used to first produce a mold 10 (Figure 1a). The mold cores have a shape that corresponds to the shape of the wind turbine blade to be produced and define the geometry of the molding surfaces 12 that bound a molding cavity 14 in which the wind turbine blade is molded. The molding surfaces 12 are molded into mold halves 16A and 16B, which, as shown in Figure 1c, are joined to form the wind turbine blade 18. During the production of mold halves 16A and 16B, the molding surfaces 12 undergo post-treatment by sanding after the mold cores have been demolded. This optimizes the surface quality of the molding surfaces 12, resulting in an optimized surface quality for the wind turbine blade 18 to be produced. JQRQ I η / ΖΖΠΖ / Β / ΥΙΛΙ Once mold halves 16A and 16B are prepared for the molding process, films, mats, reinforcing elements, and the like are placed on mold halves 16A and 16B. In addition, a vacuum film is placed over them, allowing the materials placed to form wind turbine blade 18 to undergo a vacuum molding process (Figure 1b). Subsequently, as shown in Figure 1c, mold halves 16A and 16B are joined to perform the vacuum molding process and connect the mold halves arranged in mold halves 16A and 16B. Subsequently, after curing and cooling, the mold halves 16A and 16B can be separated again (Figure 1d), allowing the molded wind turbine blade 18 to be demolded, as shown in Figure 1e. The wind turbine blade 18 can then undergo further treatment (Figure 1f). This includes removing any material projections that may have formed in the parting line area between the mold halves 16A and 16B during molding, using a suitable cutting tool. The treatment of the molding surfaces 12 of the mold halves 16A and 16B before the placement of the materials forming the wind turbine blade 18 is carried out by means of a treatment device 20, which is illustrated schematically in relation to the mold half 16A in Figures 2 to 4 and which is a sanding machine. The treatment device 20 comprises a treatment cart 22, which is illustrated in detail in Figures 9 to 16, and a guide arrangement 24 comprising a cable system having two cables 26A and 26B that are fixed to opposite sides of the treatment cart 22 and whose ends facing outwards from the treatment cart 22 are connected to winches (not shown) mounted on respective actuators 28A and 28B. Actuators 28A and 28B are arranged on respective guide surfaces 30A and 30B of mold half 16A of mold 10. Guide surfaces 30A and 30B limit the molding surface 12 of mold half 16A on the sides and extend in the longitudinal Y direction of mold 10. Actuators 28A and 28B can be moved on guide surfaces 30A and 30B in the longitudinal Y direction of mold 10.For this purpose, a rail or similar arrangement may be provided, or a sensor arrangement may be provided that allows the actuators 28A and 28B to be guided over the guide surfaces 30A and 30B freely, but in a guided manner. The molding surface 12 of mold half 16A is sanded by means of the treatment carriage 22, which comprises two treatment drums 32A and 32B in the shape of JQRQ ίη / ΖΖΠΖ / Ε / ΥΙΛΙ sanding drums. The treatment carriage 22 moves over the molding surface 12 in the transverse X direction of the mold 10 in parallel treatment strips or lanes by means of the guide arrangement 24 and the corresponding operation of the cable winches 26A and 26B, enabling the treatment carriage 22 to sand almost the entire molding surface 12. Once one treatment lane has been completely sanded by the treatment carriage 22, the guide arrangement 24 moves in the longitudinal Y direction of the mold 10 by means of the actuators 28A and 28B, after which a subsequent treatment lane can be sanded by moving the treatment carriage 22 in the transverse X direction of the mold 10. In this way, at least almost the entire molding surface 12 of mold half 16A can be sanded successively in an automated manner by means of the treatment device 20. The sanding quality can be controlled by adjusting the rotational speed of the two sanding drums on the treatment carriage 22. The movement speed on the molding surface 12, which is predetermined by the guide arrangement 24, also affects the sanding quality. Furthermore, the type of abrasive supplied to the treatment drums 32A and 32B can influence the sanding quality. Optionally, the pressure can be adjusted by changing the height of the sanding drums relative to the wheels 66 of the treatment trolley 22. The sanding pressure can be adjusted depending on the desired sanding result. In principle, however, the sanding pressure should remain constant throughout the sanding process. In order to be able to regulate the sanding pressure, the treatment carriage 22 is further provided with means 34 for displacing its center of gravity, said means 34 being displaced according to the position of the treatment carriage 22 on the molding surface 12. This can take place in an automated manner according to the principle illustrated in Figures 4a to 4c, in which the means 34, comprising a post 36 having a weight 38, is tilted on the treatment carriage 22 in such a way that the post 36 is always oriented vertically or, in vertical sections of the molding surface 12, almost vertically. Furthermore, the center of gravity of the treatment cart 22 can be set by changing the fixing points of cables 26A and 26B on the treatment cart 22. Other means of changing the center of gravity of the treatment cart 22 are conceivable, such as additional movable weights integrated into the superstructure of the treatment cart 22. The treatment cart 22 and the guide arrangement 24 are connected to a JQRQ iη / ZZΖΠZ / E / YILI control unit 80 provided with a graphical user interface 82. The control unit 80 operates on the basis of the parameters provided in the user interface 82 and can control the operation of the treatment carriage 22, i.e., sanding drums 32A and 32B, and the adjustment of the center of gravity by means of a tilting post 36, displacement of the weight 38 and / or displacement of the fixing points of the cables 26A and 26B. In addition, the control unit 80 controls the actuators 28A and 28B and the cable winches 26A and 26B of the guide arrangement 24. Figures 5 and 6 show an alternative embodiment of a device 40 for treating the molding surfaces 12 of mold halves 16A and 16B of mold 10. The device 40 differs from the device illustrated in Figures 2 to 4 in that it comprises a gantry 42 straddling mold half 16A or 16B and provided with rollers 44, enabling it to move in the longitudinal Y direction of mold half 16A or 16B. Cables 26A and 26B are fixed to the gantry 42. Winches by which the movement of the treatment carriage 22 in the transverse X direction of mold 10 on the molding surface 12 can be controlled via cables 26A and 26B are arranged directly on the treatment carriage 22 or on the gantry 42. The molding surface 12 is sanded in parallel strips or rails in the transverse X direction of the mold 10 by means of the treatment device 40 illustrated in Figures 5 and 6, for which the treatment carriage 22 is moved in the transverse X direction of the mold 10 over the molding surface 12 by means of cables 26A and 26B and, once the treatment of one rail is completed, the gantry 42 is moved in the longitudinal Y direction of the mold 10, after which a subsequent treatment rail of the molding surface 12 can be sanded by the treatment carriage 22, all under the control of the control unit 80. Furthermore, device 40 corresponds to the device shown in Figures 2 and 3, so reference is made to the related description. Figures 7 and 8 illustrate a device 50, which is another embodiment of a device for treating a molding surface 12 of a mold half 16A or 16B of a mold 10 for producing a wind turbine blade 18. The device 50 also comprises a treatment carriage 22 of the type described with reference to Figures 2 to 6. However, the treatment carriage 22 is coupled with a guide arrangement 52 comprising a rail system 54 instead of a cable system, the rail system 54 being arranged directly on the surface of JQRQ ίη / ZZΖΠZ / E / YΙΛΙ molding 12 of the mold half 16A or 16B. By means of the rail system 54, the treatment carriage 22 can be moved both in the transverse X direction of the mold 10 and in the longitudinal Y direction of the mold 10. The rail system 54 can be fixed by means of a vacuum system comprising suction cups or the like. In order to prevent the rail system or the vacuum system from leaving marks on the molding surface 12 after the sanding process carried out by means of the treatment carriage 22, the rail system 54 is withdrawn from the molding surface 12 step by step during the process, all under the control of the control unit 80. The treatment carriage 22, illustrated only in Figures 9 to 16, comprises a support 60 made up of two support units 64A and 64B connected to each other by a joint 62. Two wheels 66 are mounted on the carriage, through which the treatment carriage 22 rests on the molding surface 12 and which roll on the molding surface 12 when the treatment carriage 22 is moved to rotate on each of the support units 64A and 64B. One of the treatment drums 32A and 32B is mounted between the wheels 66 on each of the support units 64A and 64B. Each of the treatment drums 32A and 32B has a circumferential surface formed by abrasive fins 68 extending parallel to the axis of rotation of the respective wheels 66 and the respective treatment drums 32A and 32B. The 32A and 32B treatment drums are height adjustable. To operate the treatment drums 32A and 32B, the treatment cart 22 has separate drive motors 70A and 70B for the treatment of drums 32A and 32B, respectively. The drive motors 70A and 70B are implemented as electric motors and drive the respective treatment drums 32A and 32B via belt drives 72A and 32B. The drive motors 70A and 70B are connected to the control unit 80. The fastening elements 74A and 74B, to which the respective cables 26A and 26B of the cable system can be attached, are arranged on support units 64A and 64B, respectively. The fastening elements 74A and 74B are height-adjustable perpendicular to the main plane of the treatment carriage 22 and are mounted movably on respective guide bars 76 for this purpose. In addition, respective electric motors 78A and 78B are provided, which can adjust the height of the respective fastening elements 74A and 74B on their respective guide bars 76 via a spindle and are connected to the control unit 80. To shift the center of gravity, the treatment cart 22 has means 34 JQRQ I η / ZZΖΠZ / Β / YILI comprising a post 36 that is tiltably mounted in the joint area 62 between the support units 64A and 64B and on which a height-adjustable weight 38 is arranged. The means 34 are also connected to the control unit 80 for moving and adjusting the center of gravity of the treatment cart. When the treatment carriage 22 is used to sand the respective molding surfaces 12 of the mold halves 16A and 16B by means of the treatment device 20 illustrated in Figures 2 to 4, the treatment carriage 22 is positioned over the molding surface 12 in question. The parameters defining the molding surface are entered into the user interface 82 of the control unit 80. Based on these parameters, the control unit 80 defines a treatment pattern according to which the treatment carriage 22 should move over the molding surface 12. The treatment of the molding surface 12 is then initiated by the control unit 80. For this purpose, the drive motors 70A and 70B are activated, causing the treatment drums 32A and 32B to rotate at a defined speed and the abrasive blades 68 to treat the molding surface 12.By means of the corresponding coordinated operation of the guide arrangement 24, i.e., the cable winches 26A and 26B, by means of the control unit 80, the treatment carriage 22 is moved in a treatment rail in the transverse X direction of the mold 10 from one edge of the molding surface 12, which is limited by guide surface 30A, to the other edge of the molding surface 12, which is limited by guide surface 30B. Then, controlled by the control unit 80, the actuators 28A and 28B move on the guide surfaces 30A and 30B to move the guide arrangement 24 and the treatment carriage 22 in the longitudinal Y direction of the mold 10, the support units 64A and 64B pivoting against each other about the joint 62 (see Figures 15 and 16) in the process.Then, the next treatment lane of the molding surface 12, adjacent to the first treatment lane, can be sanded by means of treatment drums 32A and 32B, with the treatment carriage 22 being moved again by the corresponding control of the cable winches 26A and 26B. Once the other edge of the molding surface 12, which is limited by the guide surface 30A, is reached again, actuator 28B—and therefore the treatment carriage 22—is moved again in the longitudinal Y direction of the mold 10, allowing the next treatment lane to be sanded by treating the carriage 22 by the corresponding control of cables 26A and 26B in the opposite direction. These treatment cycles are repeated until the molding surface 12 has been sanded at least almost completely. JQRQ ίΠ / ΖΖηΖ / Ε / ΥΙΛΙ complete by means of treatment cart 22. When the treatment carriage 22 moves over the treatment rails of the molding surface 12, the center of gravity is displaced by means of the tilting post 36 of the means 34, as illustrated schematically in Figures 4a, by c. At least almost the entire treatment / sanding procedure is carried out with computer assistance by means of control unit 80.

Claims

1. A device for treating a molding surface (12) that limits a molding cavity of a mold or that is a surface of a mold core for producing a mold, the device comprising: a treatment carriage (22) having at least one treatment drum (32A, 32B) and / or at least one liquid application and / or demolding means; a guide arrangement (24, 52) connected to the treatment carriage (22) and serving to move the treatment carriage (22) over the molding surface (12); and a control unit (80) connected to the treatment carriage (22) and to the guide arrangement (24, 52).

2. The device according to claim 1, characterized in that the treatment drum (32A, 32B) is made as a sanding drum whose effective outer surface is preferably defined, at least in part, by abrasive fins (68).

3. The device according to claim 1 or 2, characterized in that the treatment cart comprises at least two treatment drums (32A, 32B), the treatment cart (22) preferably comprising a support (60) on which the treatment drums (32A, 32B) are mounted to rotate.

4. The device according to claim 3, characterized in that the support (60) comprises a joint (62) that allows the two treatment drums (32A, 32B) to pivot relative to each other.

5. The device according to any one of claims 1 to 4, characterized in that a drive motor (70A, 70B) is assigned to each treatment drum (32A, 32B).

6. The device according to any one of claims 1 to 5, characterized in that the treatment cart (22) comprises means (34) for displacing its center of gravity, the means (34) for displacing the center of gravity being preferably connected to the control unit (80) and in that it preferably comprises a movable weight (38), the movable weight (38) being preferably arranged on a pivotable post (36).

7. The device according to any one of claims 1 to 6, characterized in that the guide arrangement (24) comprises a cadles system fixed to the treatment carriage (22), the cadles system preferably comprising two cables (26A, 26B) each being fixed via a fastening element (74A, 74B) on opposite sides of the treatment carriage (22) and in that each can be wound onto a winch, the fastening elements (74A, 74B) being preferably height-adjustable on the treatment carriage (22).

8. The device according to any one of claims 1 to 7, characterized in that the guide arrangement (24) comprises a gantry (42) configured to be straddled on the mold (10).

9. The device according to any one of claims 1 to 8, characterized in that the guide arrangement (24) comprises an actuator (28A, 28B) that can be placed on and moved over a guide surface of the mold (10).

10. The device according to any one of claims 1 to 9, characterized in that the guide arrangement comprises a rail system (54).

11. The device according to any one of claims 1 to 10, characterized in that the control unit (80) comprises a user interface (82), preferably a graphical user interface.

12. The device according to any one of claims 1 to 11, characterized in that the control unit (80) is configured to automatically control the treatment carriage (22) and / or the guide arrangement (24, 52) based on pre-set molding parameters, so that the treatment carriage (22) moves over the molding surface according to a defined treatment pattern.

13. The device according to any one of claims 1 to 12, characterized in that the liquid application and / or demolding means comprises at least one nozzle and / or at least one hose for applying liquid to the molding surface or for supplying liquid to liquid distribution means of the treatment cart, the liquid being preferably a demolding agent, a sealing agent and / or a cleaning agent.

14. The device according to any one of claims 1 to 13, characterized by a sensor system for determining the quality of the molding surface before and / or after treatment.

15. A use of the device according to any one of claims 1 to 14 for the treatment of a molding surface (12) that limits a molding cavity (14) of a mold (10) for producing a wind turbine blade (18) or that is an outer surface of a mold core for forming a molding cavity of a mold.

16. A method for treating a molding surface (12) of a mold (10) for producing a wind turbine blade (18) or for treating a molding surface of a mold core for producing a mold, the method comprising the following steps: placing at least one treatment carriage (22) on the molding surface (12); activating the treatment carriage (22); moving the treatment carriage (22) on the molding surface (12) in the transverse direction of the mold; and moving the treatment carriage (22) on the molding surface (12) in the longitudinal direction of the mold, so that the molding surface (12) is treated by means of the at least one treatment carriage (22) according to a treatment pattern.

17. The method according to claim 16, characterized in that the treatment pattern on the molding surface (12) comprises treatment lanes, in particular parallel treatment lanes, along which the treatment carriage (22) moves on the molding surface.

18. The process according to claim 16 or 17, characterized in that the treatment pattern is established on the basis of molding parameters.

19. The method according to any one of claims 16 to 18, characterized in that the molding surface (12) is sanded by means of the treatment carriage (22) and / or a liquid is applied to the molding surface (12) by means of the treatment carriage (22), the liquid being preferably a demolding agent that supports demolding, a sealing agent and / or a cleaning agent.

20. The method according to any one of claims 16 or 19, characterized in that the treatment carriage (22) is moved in the transverse direction of the mold and in the longitudinal direction of the mold by means of a guide arrangement (24, 52), the guide arrangement (24) being preferably moved in the longitudinal direction of the mold.

21. The method according to any one of claims 16 to 20, characterized in that the center of gravity of the treatment carriage (22) is changed depending on the position of the treatment carriage (22) on the molding surface (12).

22. A method for treating a wind turbine blade of a JQRQ ίη / ZZΖΠZ / E / YΙΛΙ wind turbine, the method comprising the method according to any one of claims 16 to 21.

Images