Powder drying device and manufacturing system

Abstract

Device (1) for continuous drying of powder for an additive manufacturing process, comprising a device wall (2) that delimits a drying chamber (3), a powder inlet (4) for introducing powder into the drying chamber (3), and a powder outlet (5) for dispensing dried powder from the drying chamber (3), at least one heating device (6) for introducing heat into the powder, a conveying device (7) arranged within the drying chamber (3) for conveying the powder through the drying chamber (3) towards the powder outlet (5), and a separating device (8) for separating liquid from the drying chamber (3), wherein the conveying device (7) comprises a conveying tube (14) with a conveying tube wall (19) which is rotatably mounted relative to the device wall (2) for conveying the powder, and wherein the conveying device (7) is designed as a screw conveyor.wherein a conveying screw (18) of the conveying device (7) extends from an inner wall of the conveying device (7) to a conveying axis (12) of the conveying device (7), wherein at least one gas supply (13) for introducing a protective gas into the drying chamber (3) is arranged on the device wall (2).

Description

[0001] The present invention relates to a device for continuous drying of powder and a manufacturing system for producing a component by means of an additive, powder-based manufacturing process, which includes such a device.

[0002] Numerous additive manufacturing processes exist, in which a component is produced on a build platform using a manufacturing station. One common additive manufacturing process is selective laser melting, also known as SLM. In SLM, a layer of powder or granules of a meltable component material is evenly applied to a build platform. Using a high-power laser, at least a defined portion of the layer is heated to such an extent that the component material in that area melts. This portion corresponds to a layer of the component being produced. The powder or granules in this area form a composite material upon melting, which cools and solidifies after being heated by the laser.

[0003] For components that need to be produced from multiple layers, these processes are repeated until the component is complete. In known methods, the build platform is lowered relative to the high-power laser by the thickness of the last layer produced. This ensures that the surface of the produced component layer is optimally aligned with the laser beam for the production of a further layer, depending on the laser's focus. Subsequently, a new layer of powder or granules is applied to the already produced component layer and the build platform, and another component layer is created by selectively melting the component material with the laser beam. In this way, highly complex components, such as those with cavities or undercuts, can be produced.To increase process reliability, in particular to ensure uniform melting and precise edge delineation of the defined areas, such additive manufacturing processes are often carried out within a protective atmosphere, preferably excluding oxygen and moisture.

[0004] To achieve the most uniform layer thicknesses possible and to ensure a consistent melting process, it is essential that the powder used has the lowest possible moisture content. Moisture can cause the powder to clump together, resulting in an irregular powder layer due to aggregation during application. Furthermore, water bound to the powder can evaporate during melting, leading to porosity in the resulting component layer. To provide a largely dry powder, SLM systems utilize drying devices.

[0005] Conventional drying systems for drying powder used in additive manufacturing, such as for SLM production stations, feature a drying chamber with a closable opening. A powder container loaded with powder, such as a powder tray, is inserted into the drying chamber through this opening. After the opening is closed, for example, by a flap, the powder is heated by a heating device, such as a forced-air heater, until any water bound to the powder evaporates. The evaporated water is then removed from the drying chamber via an exhaust system and / or a water separator. After the drying process is complete, the opening can be reopened and the powder container with the dried powder removed from the drying system.

[0006] Known drying devices, especially for SLM manufacturing systems, have the disadvantage that drying the powder is very complex and time-consuming. Furthermore, the drying process is inefficient because heat can only be applied to the surface of a powder layer. Introducing heat into the interior of the powder layer requires a great deal of energy, as outer powder layers act as thermal insulators. Therefore, more energy is required to evaporate the moisture within the powder layer than at the surface. Consequently, conventional drying devices have a low efficiency. Additionally, only a limited amount of powder can be dried at a time, since after each drying cycle the dried powder must be unloaded from the device and the device reloaded with moist powder.This results in long dead times, which lead to a reduction in the drying capacity of the drying device.

[0007] It is therefore an object of the present invention to overcome, or at least partially overcome, the disadvantages described above in a device for the continuous drying of powder, in particular moist powder, and in a manufacturing system for producing a component using an additive, powder-based manufacturing process. In particular, it is an object of the present invention to provide a device for the continuous drying of powder and a manufacturing system for producing a component using an additive, powder-based manufacturing process that enable the provision of a constant or substantially constant flow of dried powder in a simple, efficient, and cost-effective manner.

[0008] The aforementioned problem is solved by the claims. Accordingly, the problem is solved by a device for the continuous drying of powder with the features of claim 1 and by a manufacturing system for producing a component using an additive, powder-based manufacturing process with the features of claim 10. Further features and details of the invention will become apparent from the dependent claims, the description, and the drawings. Features and details described in connection with the device for the continuous drying of powder according to the invention naturally also apply in connection with the manufacturing system according to the invention for producing a component using an additive, powder-based manufacturing process, and vice versa, so that the disclosure regarding the individual aspects of the invention always refers, or can refer, to each other.

[0009] According to the first aspect of the invention, the problem is solved by a device for the continuous drying of powder, in particular a device for a production station for the additive, powder-based manufacturing of components. The device has a wall that defines a drying chamber, a powder inlet for introducing powder into the drying chamber, and a powder outlet for dispensing dried powder from the drying chamber. Furthermore, the device has at least one heating device for introducing heat into the powder, a conveying device arranged within the drying chamber for conveying the powder through the drying chamber towards the powder outlet, and a separating device for separating liquid from the drying chamber. The separating device may additionally have at least one moisture-permeable and powder-impermeable retention device.

[0010] Continuous drying, as defined in the invention, means that a drying process can be carried out without interruption, so that powder to be dried can be continuously fed into the device and dried powder can be continuously discharged from the device. Drying can thus be carried out in a flow process using the device. In continuous drying, the powder to be dried that is closer to the powder outlet in the conveying direction has, on average, a lower moisture content than powder that is closer to the powder inlet in the conveying direction. The powder arranged within the device therefore has a graduated moisture content.

[0011] The powder is preferably suitable for an additive manufacturing process, such as SLM, and can therefore be melted using a laser. "Powder" or "moist powder" means that moisture or water is bound to and / or within the powder. This could be, for example, natural moisture that has come into contact with the powder due to ambient air humidity.

[0012] For drying the powder, the device has a wall that defines a drying chamber. The wall surrounds the drying chamber and preferably seals it gas-tight or substantially gas-tight. Thus, a defined atmosphere with a defined atmospheric pressure can be created and maintained in the drying chamber using simple means. The device is preferably designed to create or enable the formation of a protective atmosphere in the drying chamber.

[0013] The device has a powder inlet for introducing the powder into the drying chamber and a powder outlet for dispensing the dried powder from the drying chamber. Preferably, the powder inlet and powder outlet are separate from each other, and more preferably, they are arranged on opposite sides or ends of the device.

[0014] The device is preferably designed such that a protective atmosphere can be established and maintained in the drying chamber. The powder inlet and / or powder outlet are preferably designed for fluid-tight coupling to a production system. This prevents ambient air from entering the drying chamber through the powder inlet or outlet and thus disrupting the protective atmosphere of the drying chamber.

[0015] The device comprises at least one heating device for introducing heat into the powder. The heating device can, for example, be configured for directly heating a part of the device, such as the device wall and / or the conveying device, or for directly heating gas located in the drying chamber, for example by supplying hot gas into the drying chamber. According to the invention, the heating device can be part of a protective gas system for generating a protective gas atmosphere in the drying chamber.

[0016] By introducing heat into the moist powder, the moisture bound to or within the powder can be heated to such an extent that it evaporates and / or vaporizes, thus escaping from the powder. In this way, the moist powder can be dried. The heat input is preferably adjustable to a level that prevents the powder from melting. It can be provided that the heating device can heat the powder to a temperature only slightly below its melting point. This has the advantage that the moisture evaporates or vaporizes particularly quickly.

[0017] The conveying device is arranged within the drying chamber and is designed to convey the powder in a conveying direction through the drying chamber. According to the invention, the conveying direction is understood to be the effective conveying direction in which the powder is conveyed during operation of the device, i.e., a direction pointing from the powder inlet to the powder outlet. The actual movement of the powder between the powder inlet and outlet need not necessarily be direct or in a constant direction of movement, but can also occur indirectly with changing directions of movement, such as along a spiral path, helical path, zigzag path, or the like. The powder can be dried on the conveying device during conveying, with powder arranged on the conveying device exhibiting lower moisture content with increasing distance from the powder inlet during operation.Preferably, the conveying device is designed to move and / or circulate the powder at an angle to the conveying direction during conveying in order to achieve better drying.

[0018] A separation device is designed to remove moisture or water, e.g., in the form of liquid water and / or water vapor. For this purpose, the separation device may additionally include a retention device designed to allow moisture to pass through and to retain the powder in the drying chamber. Preferably, the retention device is designed to allow liquid water, water vapor, and moist air or moist protective gas to pass through. Preferably, the separation device includes a water pump for pumping out the moisture or liquid. Such a separation device ensures that moisture can be removed from the drying chamber without powder loss.

[0019] Preferably, the device can be coupled to a manufacturing station for the additive manufacturing of a component in such a way that the protective atmosphere of the drying chamber and the protective atmosphere of the manufacturing station form a common protective atmosphere. Gas exchange at a coupling point between the manufacturing device and the device according to the invention can be prevented by means of a sealing arrangement, which is preferably arranged on the device.

[0020] An apparatus according to the invention has the advantage that a constant or substantially constant mass flow of dried powder can be provided in a continuous process in a simple, efficient, and cost-effective manner. Using this apparatus, powder, especially moist powder, can be dried continuously, so that powder can be dried even during the introduction of the powder into the drying chamber and the discharge of the dried powder from the drying chamber. Dead times, as with conventional drying devices for drying powder, are therefore not required. In this way, the efficiency of a continuous SLM production system can be significantly improved.

[0021] According to a preferred embodiment of the invention, a device may be provided with a retention device comprising a semipermeable membrane. The semipermeable membrane is designed to retain the powder while allowing moisture, such as water vapor and / or humid air and / or water, to pass through. This has the advantage of ensuring reliable, powder-loss-free moisture removal using simple and cost-effective means.

[0022] Furthermore, the separating device can be arranged at an opening in the device wall and / or an opening in the conveying device in such a way that the retaining device closes the opening. The opening is, for example, formed in a wall of the conveying device. By closing the opening with the separating device, the passage of powder through the opening is prevented, while the opening remains permeable to moisture. Such an arrangement has the advantage that the powder is retained in a defined area of ​​the drying chamber, while moisture can be extracted from this area through the opening.

[0023] Preferably, the drying chamber has a longitudinal axis, a circular cross-section, and a rectangular or trapezoidal longitudinal section. Such a drying chamber is, for example, cylindrical, conical, or obtuse-conical with respect to its longitudinal axis. This type of drying chamber has the advantage of a compact design. Furthermore, a conveying device, particularly a screw conveyor, can be easily arranged within the drying chamber, preferably coaxial with its longitudinal axis.

[0024] It is preferred that at least one gas supply for introducing a gas, in particular a protective gas, into the drying chamber is arranged on the apparatus wall. The gas supply is preferably located on a cross-sectional area of ​​the apparatus above the conveying device on the apparatus wall to prevent impairment of the gas supply by the powder, such as contamination or clogging. Preferably, the gas supply is arranged in the middle or substantially in the middle between the powder inlet and the powder outlet. According to the invention, several gas supplies may also be provided. Alternatively or additionally, a gas supply may also be arranged at the powder inlet and / or powder outlet. A gas supply has the advantage that a defined atmosphere in the drying chamber can be created and maintained using simple means.

[0025] In an advantageous embodiment of the invention, the conveying device comprises a conveying tube that is rotatably mounted relative to the device wall for conveying the powder. The conveying tube is preferably rotatably mounted on the device wall about its conveying tube axis. Preferably, the conveying tube has at least one conveying element inside, such as a conveying wall arranged at an angle to the conveying direction, to improve the conveying of the powder. More preferably, the separating device is arranged at an opening in a conveying tube wall, so that the powder is kept spaced apart inside the conveying tube and from the device wall. The conveying tube has a compact design and is particularly advantageously rotatably mounted within the device.

[0026] Preferably, the conveying device is designed to transport powder from the powder inlet to the powder outlet. Powder introduced into the device through the powder inlet can thus be conveyed directly from the powder inlet to the powder outlet by means of the conveying device. Furthermore, the conveying device can extend over the powder inlet and / or the powder outlet. Such a conveying device has the advantage that the conveying of the powder or the powder flow through the drying chamber is improved and / or can be controlled with particular precision.

[0027] Preferably, the conveying device is designed as a screw conveyor or incorporates a screw conveyor. The screw conveyor is specifically designed in the shape of a screw and has a conveying wall shaped like a screw thread, extending outwards from a central conveying axis. Alternatively, the conveying wall extends from an inner wall of a cylindrical conveying device towards the conveying axis. A conveying device designed as a screw conveyor has the advantage that the powder flow rate can be easily controlled by adjusting the rotational speed of the conveying device. Furthermore, the powder is thoroughly mixed by the screw conveyor, resulting in improved and more uniform drying. In addition, a screw conveyor has a relatively large contact area with the powder, making it particularly efficient for introducing heat into the powder for drying purposes.

[0028] According to a preferred embodiment of the invention, a device may be provided with at least one mixing element for mixing the powder. This mixing element is, for example, scoop-shaped and / or wall-shaped and arranged such that, as the powder is conveyed in the conveying direction, it engages with the powder and moves through it. This ensures that the powder is thoroughly mixed and / or circulated. This has the advantage that heat can be introduced into the powder more uniformly than with unmixed powder. The powder can therefore be dried more quickly and uniformly with less energy. This improves the efficiency of the device and increases its drying capacity, i.e., the amount of powder that can be dried per unit of time.

[0029] Preferably, the conveying device is designed to be arranged at an angle on a production device such that the powder can be conveyed towards the powder outlet by gravity or with gravity assistance. The powder inlet is thus at a higher potential energy level than the powder outlet. This has the advantage that conveying the powder, especially when simultaneously mixing it, is cost-effective and can be achieved with simple means.

[0030] It is preferred that the at least one heating device is arranged on the conveying device and is designed for variable and / or uniform heating of the conveying device. The heating device is, for example, arranged in a conveying tube and / or a screw conveyor and / or a conveying device wall and / or a mixing element of the conveying device. Such an arrangement of the heating device has the advantage that the conveying device has a relatively large contact area with the powder and thus a relatively large heat transfer area. Therefore, the heat provided for heating the powder can be transferred to the powder particularly efficiently. This advantageously and reliably improves the efficiency and drying capacity of the device using simple means.

[0031] Alternatively or additionally, according to the invention, the heating device can also be formed on the device wall. Alternatively or additionally, according to the invention, the heating device can also be designed as a heating fan or include a heating fan. By means of such a heating device, heated gas, in particular protective gas, can be introduced into the drying chamber. Alternatively or additionally, according to the invention, the heating device can also be designed as a radiant heater, such as an infrared heater, or include such a radiant heater.

[0032] The separation device preferably comprises a hygroscopic material for attracting and absorbing moisture, especially liquid water. A hygroscopic material has the property of attracting moisture or water. Moisture extracted from the powder is thus attracted to the hygroscopic material and can therefore be removed from the drying chamber more easily, simply, and advantageously.

[0033] It is preferred that the hygroscopic material is arranged on a side of the retention device facing away from the conveying device. In the context of the invention, the side of the retention device facing away from the conveying device is the side of the retention device, or of a membrane of the retention device, that does not come into contact with the powder during operation of the device. Moisture located on a side of the retention device facing the conveying device is attracted to the hygroscopic material by the retention device. This has the advantage that the removal of moisture from the drying chamber is reliably improved using simple and cost-effective means.

[0034] According to a second aspect of the invention, the problem is solved according to the invention by a manufacturing system for producing a component using an additive powder-based manufacturing process. The manufacturing system comprises at least one manufacturing station for producing a component using an additive, powder-based manufacturing process and a device according to the invention for continuous drying of powder according to the first aspect of the invention.

[0035] For the purposes of the invention, a manufacturing system is a system designed for producing the component using an additive, powder-based manufacturing process. The manufacturing system comprises at least one manufacturing station for the additive manufacturing of the component.

[0036] The manufacturing station includes at least one melting station with a melting medium, such as a laser, for the defined melting of specific areas of a powder layer. The manufacturing station may also include a staging station for arranging the powder or granulate layer of component material onto a build platform. This allows, for example, a build platform to be positioned simultaneously at the staging station and another at the melting station. Thus, the staging and melting of the component material can be performed simultaneously on different build platforms. After the defined melting of the powder, the build platform can be removed from the manufacturing station, the build platform can be moved from the staging station to the melting station, and, if necessary, another build platform can be moved to the staging station.The manufacturing system preferably includes a transport system for moving the construction platforms.

[0037] The manufacturing system preferably features an encapsulation that provides a protective atmosphere. This is particularly advantageous during the melting of the component material, as it reduces the likelihood of producing a damaged or defective component layer. The device is preferably coupled, or can be coupled, to the manufacturing station in such a way that the drying chamber of the device and a working chamber of the manufacturing station form a common interior space with a shared protective atmosphere, the common interior space preferably being sealed to the outside.

[0038] The described manufacturing system offers all the advantages that have already been described for a device for the continuous drying of powder according to the first aspect of the invention.

[0039] An inventive device for the continuous drying of powder and an inventive manufacturing system are explained in more detail below with reference to the drawings. The drawings schematically show:

[0040] Fig. 1 in a side view a preferred first embodiment of a device according to the invention;

[0041] Fig. 2 in a side view a preferred second embodiment of a device according to the invention;

[0042] Fig. 3 in a top view a third preferred embodiment of a device according to the invention; and

[0043] Fig. 4 in a top view a section of a preferred embodiment of a manufacturing system according to the invention.

[0044] Elements with the same function and mode of operation are in the Fig. 1 to Fig. 4 each with the same reference numerals.

[0045] In Fig. 1 is a preferred first embodiment of a device according to the invention. 1 A schematic representation of a continuous drying process, particularly of moist powder, is shown in a sectional view and a side view.

[0046] The device 1 has a hollow cylindrical or tubular device wall 2 up, which has a drying room 3 with a spatial longitudinal axis 12 forms or surrounds in a radial direction. In the device wall 2 is a powder inlet 4 for feeding powder into the drying room 3 and a powder outlet 5 for removing dry or dried powder from the drying room 3 trained.

[0047] The device wall 2 has at least two openings 11 open. The breakthroughs 11 can each pass through a membrane 10 a restraint device9 It must be sealed to retain powder and allow moisture to pass through. On a drying room 3 far side of the membrane 10 are a hygroscopic material 16 for removing moisture from the drying room 3 , in particular by the restraint device 9 , as well as a derivative 17 arranged to drain moisture. The retention device 9 , the membrane 10 , the hygroscopic material 16 as well as the derivative 17 are elements of a separation device 8 for removing moisture from the drying room 3 .

[0048] Furthermore, on the device wall 2 at least one gas supply 13 arranged, for example, as a gas supply nozzle. Via the gas supply 13 Gas, especially a protective gas, is introduced into the drying room. 3injectable to create a protective gas atmosphere in the drying room 3 to generate or maintain.

[0049] In the drying room 3 is a conveying device 7 arranged. The conveying device 7 features a hollow cylindrical conveying pipe 14 up, which is coaxial to the drying room 3 is arranged between the device wall. 2 and the conveying pipe 14 A hollow cylindrical gap is formed to allow free rotation of the conveying pipe. 14 relative to the fixture wall 2 around the longitudinal axis of space 12 not to be obstructed. Inside the conveying pipe 14 is a plurality of mixing elements 15 arranged to mix or stir the powder, e.g. when rotating the conveying tube 14 around the longitudinal axis of space 12 , are trained. The conveying pipe 14The conveying pipe wall, in this embodiment, is permeable to both moisture and powder. Alternatively, the conveying pipe wall is designed to be permeable to moisture and to retain powder, or at least substantially retain powder.

[0050] A heating device 6 In this embodiment, it is attached to the conveying pipe wall. 19 of the conveying pipe 14 arranged. Thus, it is located inside the conveying pipe. 14 The arranged powders can be heated well and the moisture bound in the powder can be easily evaporated or vaporized.

[0051] The device 1 is angled so that the powder inlet 4 at a higher potential energy level than the powder outlet 5 is arranged. The conveying pipe 14 It is therefore also arranged at an angle. This allows for gravity-assisted conveying of the powder.

[0052] The in Fig. 2 second embodiment of a device according to the invention 1 differs from the device Fig. 1 essentially in the design of the conveying device 7 as well as the heating device 6 The conveying device 7 According to the second embodiment, a conveying pipe has 14 with a conveying pipe wall 19 up. Inside the conveying pipe 7 is on the conveying pipe wall 19 a feed screw 18 arranged for conveying the powder. The conveying screw 18 It is formed from a conveying wall. On or in the conveying screw. 18 is the heating device 6 arranged. Thus, the conveying screw 18 heated and the powder that comes from the conveying screw 18 The fluid is circulated and conveyed, thus becoming heatable and therefore dryable.

[0053] The in Fig. 3 further embodiment of a device according to the invention 1 differs from the device Fig. 1 essentially in the arrangement of the separating devices 8 In alternative embodiments of the device 1 According to the invention, it can be provided, for example, that in particular the membrane 10 the restraint device 9 the separating device 8 directly up to the wall of the conveying pipe 14 That is sufficient. Alternatively or additionally, it can be provided that the hygroscopic material 16 It is located directly on the wall of the conveying pipe. Naturally, these arrangements of the separating devices are 8 The first embodiment and the second embodiment of the device according to the invention can also be combined.

[0054] Fig. Figure 4 schematically shows a section of a manufacturing system according to the invention. 20in a top view. The manufacturing system 20 indicates a production station 21 on, which are used to create a powder- or granular-shaped powder layer of component material on a build platform 23 is trained. Furthermore, the production station is 21 The system is designed for the defined or targeted melting of areas within the powder layer. In this way, a component layer can be produced using a powder-based additive manufacturing process. A component can thus be produced by repeatedly creating superimposed component layers. Preferably, the manufacturing station is 21Designed for continuous operation, this is achieved by parallelizing processes, such as the simultaneous production of a first powder layer and the selective melting of parts of a second powder layer. This allows for particularly high utilization of individual production resources, such as a laser for melting the powder layer, thereby reducing manufacturing costs.

[0055] At the production station 21 is a device according to the invention 1 arranged in such a way that a powder outlet 5 the device into the production station 21 leads to the production station. 21 and device 1 are preferably coupled to each other in such a way that an atmosphere of a workspace of the manufacturing device is created. 21 with a drying room atmosphere 3 the device 1are formed as a shared atmosphere. By means of the device 1 Is the powder continuously dryable and therefore dried powder continuously available at the production station? 21 via the powder outlet 5 feedable.

[0056] The manufacturing system includes a transport system. 22 to move the construction platforms 23 in transport direction T. By means of the transport system 22 are the construction platforms 23 to the production station 21 movable and in transport direction T from the production station 21 movable. Reference symbol list 1 Device 2 Device wall 3 Drying room 4 Powder inlet 5 Powder outlet 6 Heating device 7 Conveyor device 8 Separation device 9 Restraint device 10 Membran 11 Breakthrough 12 Longitudinal axis of space 13 Gas supply 14 Conveyor pipe 15 Mixing element 16 hygroscopic material 17 Derivative 18 Conveyor screw 19 Conveyor pipe wall 20 manufacturing system 21 production station 22 Transport system 23 Construction platform F Conveyor direction T Transport direction

Claims

[1] Device ( 1 ) for continuous drying of powder, comprising a device wall ( 2 ), which includes a drying room ( 3 ) limited, a powder inlet ( 4 ) for introducing powder into the drying room ( 3 ) as well as a powder outlet ( 5 ) for dispensing dried powder from the drying room ( 3 ), at least one heating device ( 6 ) to introduce heat into the powder, one within the drying room ( 3 ) arranged conveying device ( 7 ) to convey the powder through the drying room ( 3 ) in the direction of the powder outlet ( 5 ) and a separation device ( 8 ) for separating liquid from the drying room ( 3 ). [2] Device ( 1 ) according to one of the preceding claims, characterized by that the drying room ( 3 ) a longitudinal axis of space ( 12) and has a circular cross-section and a rectangular or trapezoidal longitudinal section. [3] Device ( 1 ) according to one of the preceding claims, characterized by that the conveying device ( 7 ) a conveying pipe ( 14 ) exhibits, which is used to convey the powder relative to the device wall ( 2 ) is mounted in a rotatable manner. [4] Device ( 1 ) according to one of the preceding claims, characterized by that the conveying device ( 7 ) for conveying powder from the powder inlet ( 4 ) to the powder outlet ( 5 ) is trained. [5] Device ( 1 ) according to one of the preceding claims, characterized by that the conveying device ( 7 ) is designed as a screw conveyor. [6] Device ( 1 ) according to one of the preceding claims, characterized by that the conveying device ( 7 ) at least one mixing element ( 15) for mixing the powder. [7] Device ( 1 ) according to one of the preceding claims, characterized by that the device ( 1 ) is designed to be arranged at such an angle on a manufacturing device that the powder is drawn towards the powder outlet by gravity ( 5 ) is eligible for funding. [8] Device ( 1 ) according to one of the preceding claims, characterized by that the at least one heating device ( 6 ) on the conveying device ( 7 ) arranged and for variable and / or uniform heating of the conveying device ( 7 ) is trained. [9] Device ( 1 ) according to one of the preceding claims, characterized by that the separation device ( 8 ) a hygroscopic material ( 16 ) exhibits the ability to attract and absorb moisture. [10] Manufacturing system ( 20) for manufacturing a component using an additive, powder-based manufacturing process, comprising a manufacturing station ( 21 ) for producing a component using an additive, powder-based manufacturing process, characterized by that the manufacturing system ( 20 ) a device ( 1 ) for a continuous drying of powder according to any one of claims 1 to 9.

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