Depowdering device and method for depowdering additively manufactured, powder-containing components
The depowdering device addresses the challenges of fragile components by using a vibration conveying unit with a screen section for automated depowdering, achieving efficient and cost-effective processing with reduced component damage.
Patent Information
- Application Number
- DE102023136274
- Authority / Receiving Office
- DE · DE
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2025-06-26
AI Technical Summary
The depowdering of additively manufactured, powder-comprising components is challenging due to their fragile material properties, leading to costly and time-consuming manual processes with potential for damage and uneven machining quality.
A depowdering device utilizing a vibration conveying unit with a screen section to separate powder from components, allowing for automated and efficient depowdering by conveying components vertically upward and aligning them to ensure thorough powder removal.
The device achieves high-degree automation and fine depowdering, reducing component damage and operational costs while ensuring consistent machining quality and preventing undesired component properties.
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Abstract
Description
[0001] The invention relates to a depowdering device for additively manufactured, powder-containing components, an additive manufacturing system and a method for depowdering additively manufactured, powder-containing components.
[0002] The depowdering of additively manufactured, powder-containing components is generally known. Such components can be produced, for example, using a binder jetting process. In the binder jetting process, a thin layer of powder material is created, which is then selectively coated with a binding liquid. This liquid is or contains a binder that locally bonds the powder material. The steps of applying the powder material and subsequently coating it with the binding liquid are repeated multiple times until a predefined green part geometry has been created. Green parts produced in this way exhibit fragile and unstable material properties comparable to blackboard chalk.
[0003] Due to these material properties, handling, transporting, and depowdering such components is difficult. The components can be particularly damaged in the process. Therefore, depowdering is usually performed manually in industrial practice, which can also cause damage to the components.
[0004] As a result, the binder jetting process is costly and time-consuming. Furthermore, manual depowdering can result in uneven machining quality.
[0005] Inadequate powder removal leads to undesirable properties in the final component. Such components are typically sintered in a sintering furnace. Incomplete powder removal during sintering can lead to undesirable component geometries or deposits. These typically render the final component either unusable or require further post-processing.
[0006] Furthermore, due to the respirable powder, depowdering is a safety-critical step, requiring high safety standards for the operator. Depowdering is usually performed manually, for example, with a brush in a depowdering chamber. Such a depowdering chamber can, for example, be a glove box or include one.
[0007] There are various approaches to automated depowdering, but these are not used on an industrial scale. Typically, such automated depowdering processes only result in rough depowdering, which must be followed by manual depowdering.
[0008] US2021053121A1 discloses various approaches for depowdering components. Among other things, a perforated conveyor belt is disclosed, which is subjected to vibration to depowder the components located on the conveyor belt. However, the described approaches have disadvantages that are difficult to resolve in practice. Among other things, the conveyor belt results in a large construction volume for the depowdering device. Furthermore, such conveyor belts are regularly damaged by the fine powder or require frequent maintenance. Furthermore, the alignment of the components is consistently the same, so that hollow structures are not depowdered or are depowdered only inadequately.
[0009] It is therefore an object of the invention to provide a depowdering device for additively manufactured, powder-containing components, an additive manufacturing system, and a method for depowdering additively manufactured, powder-containing components that reduce or eliminate one or more of the aforementioned disadvantages. In particular, it is an object of the invention to provide a solution that enables fine depowdering of components with a high degree of automation.
[0010] This object is achieved with a depowdering device, an additive manufacturing system, and a method according to the features of the independent patent claims. Further advantageous embodiments of these aspects are specified in the respective dependent patent claims. The features disclosed in the patent claims, the description, and the drawings can be combined individually in any technologically expedient manner, with further embodiments of the invention being demonstrated.
[0011] According to a first aspect, the object mentioned at the outset is achieved by a depowdering device for additively manufactured components containing powder, comprising a receiving unit which is arranged and designed to receive the components, a vibration conveyor unit which is coupled to the receiving unit and which has a conveyor path extending from a conveyor inlet to a conveyor outlet for conveying the components, wherein the vibration conveyor unit is arranged and designed such that the components can be conveyed along the conveyor path by means of vibration, wherein the conveyor path comprises at least one sieve section which is arranged and designed such that a powder separated from the components by the vibration can be removed from the conveyor path in order to depowder the components.
[0012] The invention is based on the finding that components have such sensitive material properties that they cannot be depowdered either manually or with existing automated depowdering processes to a level that is sufficient for industrial applications. Furthermore, the invention is based on the finding that powder-containing components can be conveyed and depowdered using vibration, thus creating an integrated approach for separating components from a powder cake and simultaneously depowdering them.
[0013] Furthermore, the relative movement of the components to the vibratory conveyor unit allows for additional functionalities. In particular, the alignment devices, explained in more detail below, can be arranged along the conveyor line to tilt and turn the components along the conveyor line, allowing cavities on different sides of the components to be depowdered.
[0014] The depowdering device is designed for depowdering additively manufactured components that still contain powder. These components can, in particular, be green parts. A green part is understood to be a part that contains or consists of bonded, in particular glued, powder. Such a component can be produced using a wide variety of processes, including the binder jetting process. The powder is, in particular, a metal powder. Such powders typically have a grain size in the range of a few micrometers, for example, less than 50 µm.
[0015] The depowdering device comprises the receiving unit. The receiving unit is arranged and configured to receive the components. In particular, the receiving unit is arranged and configured to receive components and powder and / or multiple components embedded in a powder. The components are often removed from an additive manufacturing system with the powder, the so-called powder cake.
[0016] This removal generally takes place using a so-called modular system. Within the modular system, the components are manufactured using the additive manufacturing system. It is particularly preferred that the receiving unit is arranged and configured to receive a modular system, wherein the modular system comprises powder and components during normal operation. Furthermore, the receiving unit is preferably arranged and configured to receive the modular system in such a way that the components arranged within the modular system can be fed to the vibration conveyor unit, particularly in an automated manner.It is further preferred that the receiving unit comprises a countersunk section which is arranged and designed such that the construction kit, preferably a housing and / or a wall of the construction kit, can be at least partially, in particular completely, countersunk so that the contents of the construction kit, namely the components and the powder, are distributed on the receiving unit and can be fed to the vibration conveyor unit.
[0017] The receiving unit can, for example, represent a central receiving surface of the depowdering device, around which the vibratory conveyor unit, in particular as a vibratory spiral conveyor unit, is arranged. Furthermore, the receiving unit can also be an inlet area or an inlet section adjacent to the conveyor inlet. In particular, it is preferred that the receiving unit is an area or comprises an area adjacent to the conveyor inlet.
[0018] The depowdering device further comprises the vibration conveyor unit coupled to the receiving unit. The vibration conveyor unit is coupled to the receiving unit in such a way that components picked up by the receiving unit can reach the vibration conveyor unit. The coupling of the vibration conveyor unit to the receiving unit is further preferably configured such that the components can be transferred from the receiving unit to the vibration conveyor unit.
[0019] The vibration conveyor unit extends, in particular, from a conveyor inlet to a conveyor outlet. The inlet is, in particular, arranged and configured such that the components can pass from the receiving unit through the conveyor inlet to the conveyor line. The conveyor line is arranged and configured to convey components by means of vibration.
[0020] It is preferred that the conveying inlet is coupled to the receiving unit in such a way that the components can be conveyed to the conveying inlet by vibration. For this purpose, the receiving unit can, for example, have an inclination such that the components are moved toward the conveying inlet by the inclination and / or the vibration.
[0021] The vibration conveyor unit is arranged and configured to convey the parts along the conveyor path by means of vibration. It is particularly preferred that the vibration conveyor unit is arranged and configured to provide vibrations such that the components can be conveyed along the conveyor path using the micro-throw principle. The micro-throw principle provides that the movement pattern of the vibration conveyor unit forces the components into a micro-throw motion.
[0022] For example, the vibratory conveyor unit moves at a throw angle to the horizontal with an operating frequency and a amplitude. The throw angle therefore results in a vertical acceleration component. If the downward vertical acceleration component of the vibratory conveyor unit exceeds the acceleration due to gravity, the components lift off, and a throw occurs. Due to their mass inertia, the components retain their original direction of movement and continue to move along a micro-throw parabola in the conveying direction, then briefly come into contact with the vibratory conveyor unit again and are subsequently accelerated again. This allows the components to be moved upwards even on a vertically inclined conveyor line.
[0023] It is further provided that the conveyor line comprises at least one sieve section. The sieve section is arranged and configured such that powder separated from the components by the vibration can be removed from the conveyor line.
[0024] In addition to the movement of the components along the conveyor line, the vibration also leads to powder removal. This depowder removal through vibration is achieved, on the one hand, by causing individual powder grains or powder agglomerations to fall off the component. On the other hand, the vibration also leads to the breakup of powder agglomerations, particularly in the component's cavities, so that they can be separated by the vibration.
[0025] The powder separated from the components is removed from the conveyor line by the sieve section. The sieve section features perforations, for example, allowing the powder to trickle vertically downward.
[0026] For example, the vibratory conveyor unit may be or include a perforated V-shaped trough through which the screening section is formed.
[0027] A preferred embodiment of the depowdering device provides that the conveyor outlet is arranged at a vertically higher level than the conveyor inlet during normal operation, so that the components are conveyed vertically upwards by means of vibration.
[0028] With a depowdering device designed in this way, the components can be moved away from the receiving unit and depowdered. Thus, the powder can be collected or removed in a lower region of the depowdering device, and the components are spatially separated from the powder. Alternatively, the conveyor outlet can be arranged at a vertically lower level or at the same level.
[0029] In a further preferred embodiment of the depowdering device, it is provided that the conveyor line has at least one alignment means which is arranged and designed to change an alignment of the components, in particular by 90°.
[0030] The alignment means is particularly arranged and configured to tilt and / or turn the components, or each individual component. Since components may have cavities, it is advantageous to turn and / or tilt the components so that the opening of the cavities is oriented downwards, at least in sections along the conveying path. This allows even such cavities to be freed of powder.
[0031] In a further preferred embodiment of the depowdering device, it is provided that the at least one alignment means is arranged and designed to turn the components about a conveying axis in the conveying direction and / or to tilt them about a horizontal axis orthogonal to the conveying axis.
[0032] The conveying direction is, in particular, the direction in which the components are conveyed by vibration during normal operation of the depowdering device. Turning and tilting the components ensures that several sides of the components face downward, allowing for depowder removal from cavities.
[0033] A preferred development of the depowdering device is further characterized in that it comprises a plurality of alignment means which are arranged and designed to align the components in such a way that each side of the components is aligned vertically downwards within a section of the conveyor line.
[0034] The fact that each side of the components within a section of the conveyor line is oriented vertically downwards can be achieved in particular by the alignment means turning the components so often that at least six sides of the components point downwards. The alignment means can be designed, for example, as steps and / or as spiral sections. Furthermore, the alignment means can be designed as geometric obstacles, for example as an obstacle element protruding into the conveyor line. In the case of components with sides that cannot be clearly identified, for example round sections, the alignment means should preferably also be designed such that cavities along the conveyor lines are depowdered. The fact that a side points downwards can also mean that it points downwards at an angle, so that a surface orthogonal to this side has a vertical component.In particular, it is preferred that the alignment means are arranged and designed such that the components can be gravitationally depowdered by means of the vibration.
[0035] It is preferred that the screening section extends along the entire conveying path or along a section of the conveying path within which the components are turned and tilted.
[0036] In a further preferred embodiment of the depowdering device, it is provided that the vibration conveyor unit is designed as a vibration spiral conveyor unit, the conveyor path of which is designed in a spiral shape.
[0037] A helical conveyor path is understood to mean, in particular, that the conveyor path extends in a helical shape. The helical conveyor path preferably has a constant gradient. It may be preferred that the helical conveyor path extends over 180° to 540°, in particular 360°.
[0038] A vibratory screw conveyor unit has the advantage that the depowder removal device can be designed compactly. The vibratory screw conveyor unit enables a long conveying path in a comparatively small space and a small footprint, allowing for better component distribution. Furthermore, the compact design allows for better creation of a protective gas atmosphere, described in more detail below. Furthermore, such a depowder removal device can be advantageously integrated into an additive manufacturing system.
[0039] In a further preferred embodiment of the depowdering device, the receiving unit is arranged vertically below the vibration conveyor unit during normal operation. It is preferred that the receiving unit and the vibration conveyor unit are arranged and configured such that a construction kit containing powder and components can be arranged within a cavity surrounded by the vibration conveyor unit, and the powder and components are conveyed by gravity from the receiving unit to the vibration conveyor unit.
[0040] It is preferred that the receiving unit be designed at an incline so that the components can migrate to the conveyor inlet, particularly through vibration. The receiving unit can, for example, have an inclined plane. Furthermore, the depowdering device itself can be arranged at an incline.
[0041] A further preferred development of the depowdering device provides that the receiving unit is perforated so that the powder can be sieved and / or removed through the receiving unit.
[0042] A perforated receiving unit allows the introduced powder and / or the separated powder to be advantageously removed. This, in particular, increases the degree of automation of the depowdering device. Furthermore, sieving allows an additional process step to be integrated into the depowdering device, eliminating the need for an additional sieving device for the powder.
[0043] In a further preferred embodiment of the depowdering device, it is provided that the receiving unit has a stamp aligned in the direction of the vibration conveyor unit, which stamp is arranged and designed to displace a vertically movable base of a construction kit, in particular vertically, and the receiving unit has a countersinking area into which a housing of the construction kit can be countersunk.
[0044] A powder removal device designed in this way advantageously enables the use of a construction kit without having to empty the contents of the kit into the powder removal device. This further prevents damage to the components.
[0045] In a further preferred embodiment of the depowdering device, it comprises a sieve unit arranged vertically below the receiving unit for sieving the separated powder.
[0046] The perforated receiving unit can enable a first screening. Furthermore, the perforated receiving unit allows the powder to be removed downwards, but the components are not moved vertically downwards, but rather can be fed to the vibratory conveyor unit. The screening unit can enable a second screening.
[0047] In a further preferred embodiment of the depowdering device, it comprises a heating unit arranged and configured to apply heat to the powder screened by the screening unit, in particular to dry it. The dried powder can advantageously be fed to a further process step, in particular an additive manufacturing system, without requiring further treatment steps for the powder.
[0048] In a further preferred embodiment of the depowdering device, it comprises a cooling unit arranged and configured to cool the powder sieved by the sieving unit. The heating unit and the cooling unit can be integrally formed.
[0049] A further preferred development of the depowdering device comprises a powder container for collecting the separated, in particular sieved, powder. It is particularly preferred that the powder container is arranged vertically below the receiving unit, preferably below the sieving unit. With such a powder container, the powder can advantageously be collected directly and fed to a further process step.
[0050] A preferred development of the depowdering device comprises a cavity in which the vibration conveyor unit and / or the receiving unit is / are arranged. A further preferred embodiment of the depowdering device comprises a closure element arranged and configured to seal one or the cavity in a fluid-tight manner, and a protective gas inlet arranged and configured to introduce a protective gas into the cavity.
[0051] Depowdering under a protective gas is particularly advantageous for reactive powders, such as those made of or containing titanium. The sealing element seals the cavity fluid-tight, allowing the protective gas to be introduced into the cavity through the protective gas inlet, allowing depowdering to take place under a protective gas.
[0052] A further preferred embodiment of the depowdering device provides that the vibration conveyor unit comprises an extension section adjacent to the conveyor outlet, which is arranged and designed to further depowder the components, in particular by means of vibration.
[0053] For example, the extension section can have a perforated groove that is subjected to vibration. For example, the components can be endlessly movable in the extension section, so that particularly advantageous depowdering can take place depending on the duration of the movement in the extension section. The extension section is preferably circular. Furthermore, it is preferred that the depowdering device is arranged and designed to additionally apply fluid to the components, for example compressed air and / or protective gas, in order to further depowder the components. The depowdering device can, for example, have a fluid curtain through which the components can be moved. Alternatively or additionally, the depowdering device can have individual nozzles for applying fluid to the components.It is preferred that the nozzles are arranged in a ring shape such that the components can be conveyed through the ring-shaped nozzles. Furthermore, it may be preferred that the extension section and / or the conveying outlet is or can be coupled to a removal unit, with which the components can be removed for downstream processing. The downstream processing can take place, for example, in a continuous furnace.
[0054] According to a further aspect, the object mentioned at the outset is achieved by an additive manufacturing system, in particular for binder jetting, comprising a depowdering device according to one of the embodiments described above.
[0055] According to a further aspect, the object mentioned at the outset is achieved by a method for depowdering additively manufactured components comprising powder, comprising the steps of: conveying the components along a conveyor path extending from a conveyor inlet to a conveyor outlet by means of vibration, removing the powder separated from the components by the vibration from the conveyor path in order to depowder the components.
[0056] It is preferred that the components be conveyed vertically upwards by means of vibration. Furthermore, it can be provided that the components are conveyed in a spiral shape along the conveying path.
[0057] In a preferred embodiment of the method, it comprises the step of arranging a kit containing powder and the components, and lowering a housing of the kit such that the powder and the components are fed to the conveying inlet. Furthermore, the method can preferably comprise the step of introducing a protective gas so that the components are conveyed and depowdered under a protective gas atmosphere.
[0058] In a preferred embodiment of the method, this comprises the step of sieving the separated powder. The sieving takes place, in particular, vertically beneath the conveyor line.
[0059] In a further preferred embodiment of the method, it comprises the step of drying the separated powder. The drying of the separated powder can take place before and / or after sieving.
[0060] In a further preferred embodiment of the method, it is provided that it comprises the step of aligning the components along the conveyor line, wherein the components are preferably tilted, rotated, and / or turned. It is particularly preferred that two or more, in particular each, preferably six sides, of the components are aligned vertically downward over a section of the conveyor line and / or over a period of time.
[0061] For further advantages, design variants and details of the individual aspects and their possible further training, please refer to the description of the other aspects, the corresponding features and further training.
[0062] Preferred embodiments are explained using the accompanying figures. They show: Fig. 1-4: schematic, two-dimensional sectional views of an exemplary embodiment of a depowdering device; Fig. 5: a schematic, two-dimensional plan view of the Fig. Depowdering device shown in 1-4; Fig. 6: a schematic, two-dimensional side view of a conveyor line with components; Fig. 7: a schematic view of a process.
[0063] In the figures, identical or essentially functionally identical or similar elements are designated by the same reference numerals.
[0064] The exemplary embodiments explained below are preferred embodiments of the invention. In the exemplary embodiments, the described components of the embodiments each represent individual, independently considered features of the invention, which also further develop the invention independently of one another or can be considered as components of the invention individually or in a combination other than that shown. Furthermore, the described embodiments can also be supplemented by further features of the invention already described.
[0065] In the Fig. 1-4 shows a depowdering device 100 for depowdering additively manufactured components 102 comprising powder 104. The components 102 are provided together with the powder 104 within a kit 106. In the kit 106, the components 102 were produced using an additive manufacturing system. The kit 106 has the kit wall 108 and the kit base 110. The kit base 110 is arranged to be vertically movable relative to the kit wall 108 such that it can be pushed out upwards. The kit 106 can be inserted into the depowdering device 100 with the powder 104 and the components 102.
[0066] The depowdering device 100 comprises a receiving unit 120, which is arranged and configured to receive the components 102. For this purpose, the receiving unit 120 has a receiving surface 122, which is designed as a perforated plate. Furthermore, the receiving unit 120 has a punch 124, which can also be referred to as a pedestal. Fig. 1 and Fig. 2 shows that the kit 106 can be fed to the receiving unit 120.
[0067] The modular base 110 is displaceable relative to the modular wall 108 by means of the stamp 124. By placing the modular base 110 on the stamp 124, the modular base 110 is pushed upward relative to the modular wall 108.
[0068] Through the opening 126, the modular wall 108 is lowered into a gap 123 formed beneath the receiving unit 120. Thus, the powder 104 and the components 102 are provided to the receiving unit 120. In this process, the first powder is removed by falling through the perforated plate of the receiving unit 120.
[0069] The depowdering device 100 further comprises a vibratory spiral conveyor unit 130, which is coupled to the receiving unit 120 such that the components 102 reach a conveyor inlet 132 of the vibratory spiral conveyor unit 130. The vibratory spiral conveyor unit 130 extends helically from the conveyor inlet 132 to the conveyor outlet 134. Between the conveyor inlet 132 and the conveyor outlet 134, the vibratory spiral conveyor unit 130 forms the conveyor path 136.
[0070] The conveyor line 136 is further formed by the perforated plate trough 138. The perforated plate trough 138 has perforations 140 so that, as shown in the Fig. 3 and Fig. 4, the components 102 are conveyed along the conveyor path 136 by means of a vibration 144. This is achieved by the vibration 144 of the vibration conveyor unit 130 and, for example, by a micro-throwing principle. The conveyor path 136 completely comprises a sieve section, which also extends from the conveyor inlet 132 to the conveyor outlet 134 and is formed by the perforations 140.
[0071] The perforated sheet metal channel 138 also has the Fig. 6, with which the components 102 are turned and / or tilted along the conveyor line so that each side of the components 102 has pointed vertically downwards once in order to also depowder cavities of the components 102. In the Fig. 3 and Fig. 4 also shows a closure element 142 designed as a cover, with which a protective gas atmosphere can be formed in the interior of the depowdering device.
[0072] Located vertically below the receiving unit 120 is a sieve unit 150, which can be configured as a sieve mesh. Also shown vertically below the sieve unit 150 is a heating unit 152, which is arranged and configured to dry the separated powder. The cavity below the sieve unit 150 tapers conically, so that a connection is established via a connector and a coupling element 154 to a powder container 156, in which the sieved powder 105 can be collected.
[0073] In Fig. Figure 5 shows a top view of the depowdering device 100. In particular, it is shown that the vibratory spiral conveyor unit 130 is helically formed with round spirals. The receiving unit 120, on which the modular system 106 can be arranged, is provided in the center of the vibratory spiral conveyor unit 130.
[0074] Fig. 6 shows a schematic view of the vibratory spiral conveyor unit 130 and the perforated plate trough 138. In particular, it is shown that the perforated plate trough 138 has the alignment means 145-148, which are designed here as steps. The components 102 move from the left side to the right side in the image. The steps 145-148 tilt the components 102 along the conveyor line 136. Thus, four sides of the components 102 are already tilted vertically downward once, so that cavities can be depowdered. It is preferred, but not shown, that the present conveyor line 136 has further alignment means with which the components 102 are turned about an axis aligned in the conveying direction, so that the sides that were not yet tilted downward are also tilted downward.
[0075] Fig.7 shows a schematic method for depowdering additively manufactured components 102 comprising powder 104. In step 200, the components 102 are conveyed along a conveying path 136 extending from a conveying inlet 132 to a conveying outlet 134 by means of vibration 144.
[0076] In step 202, the powder 104 separated from the components 102 by the vibration 144 is removed from the conveyor line 136 to depowder the components 102. In step 204, the separated powder 104 is sieved, dried, and collected in a powder container 156. Furthermore, the method 200-206 may include the step of aligning the components 102 about various axes.
[0077] The depowdering device 100 described above and the corresponding method have the advantage that components 102 can be advantageously depowdered. This takes place in a particularly compact depowdering device 100, which is also robustly designed. The components 102 are moved by means of vibration 144, on the one hand, and depowdered, on the other hand. This results in better depowdering, with the components 102 also being only slightly mechanically influenced, so that the fragile components 102 exhibit no or only minor damage. REFERENCE SYMBOL 100 Depowdering device 102 component 104 powder 105 sieved and dried powder 106 construction kit 108 modular wall 110 modular floor 120 recording unit 122 recording area 123 space 124 stamps 126 Opening 130 vibratory screw conveyor unit 132 conveyor inlet 134 Conveyor outlet 136 conveyor line 138 perforated sheet gutter 140 perforations 142 End element 144 Vibration 145 alignment agents 146 alignment tools 147 alignment tools 148 alignment tools 150 sieve unit 152 Heating unit 154 coupling element 156 powder containers QUOTES CONTAINED IN THE DESCRIPTION
[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature
[0000] US 2021053121A1
[0008]
Claims
[1] Depowdering device (100) for additively manufactured components (102) comprising powder (104), comprising - a receiving unit (120) arranged and designed to receive the components (102), - a vibration conveyor unit (130) coupled to the receiving unit (120) and having a conveyor path (136) extending from a conveyor inlet (132) to a conveyor outlet (134) for conveying the components (102), - wherein the vibration conveyor unit (130) is arranged and designed such that the components (102) can be conveyed along the conveyor path (136) by means of vibration (144), - wherein the conveyor line (136) comprises at least one sieve section (138) which is arranged and designed such that a powder separated from the components (102) by the vibration (144) can be removed from the conveyor line (136) in order to depowder the components (102). [2] Depowdering device (100) according to claim 1, wherein - the conveying outlet (134) is arranged, during normal operation, at a vertically higher level than the conveying inlet (132), so that the components (102) are conveyed vertically upwards by means of the vibration (144). [3] Depowdering device (100) according to one of the preceding claims, wherein - the conveyor line (136) has at least one alignment means (145-148) which is arranged and designed to change an alignment of the components (102), in particular by 90°. [4] Depowdering device (100) according to the preceding claim 3, wherein - the at least one alignment means (145-148) is arranged and designed to turn the components (102) about a conveying axis in the conveying direction and / or to tilt them about a horizontal axis orthogonal to the conveying axis. [5] Depowdering device (100) according to one of the preceding claims 3-4, comprising - a plurality of alignment means (145-148) arranged and configured to align the components (102) such that each side of the components (102) is oriented vertically downwards within a portion of the conveyor path (136). [6] Depowdering device (100) according to one of the preceding claims, wherein - the vibration conveyor unit (130) is designed as a vibration spiral conveyor unit, the conveyor path (136) of which is spiral-shaped. [7] Depowdering device (100) according to one of the preceding claims, wherein - the receiving unit (120) is arranged vertically below the vibration conveyor unit (130) during normal operation. [8] Depowdering device (100) according to one of the preceding claims, wherein - the receiving unit (120) is perforated so that the powder can be sieved and / or removed through the receiving unit (120). [9] Depowdering device (100) according to one of the preceding claims, wherein - the receiving unit (120) has a stamp (124) aligned in the direction of the vibration conveyor unit (130), which is arranged and designed to displace a vertically movable base (110) of a construction kit (106), and - the receiving unit (120) has a countersunk area into which a housing (108) of the modular system (106) can be countersunk. [10] Depowdering device (100) according to one of the preceding claims, comprising - a sieving unit (150) arranged vertically below the receiving unit (120) for sieving the separated powder. [11] Depowdering device (100) according to one of the preceding claims, comprising - a heating unit (152) which is arranged and designed to apply heat to the powder sieved by the sieving unit, in particular to dry it. [12] Depowdering device (100) according to one of the preceding claims, comprising - a closure element (142) arranged and designed to close the cavity in a fluid-tight manner, and - a protective gas inlet arranged and designed to introduce a protective gas into the cavity. [13] Depowdering device (100) according to one of the preceding claims, wherein - the vibration conveyor unit (130) comprises an extension section adjacent to the conveyor outlet (134), which is arranged and designed to further depowder the components (102), in particular by means of vibration (144). [14] Manufacturing system, preferably additive manufacturing system, in particular for binder jetting, comprising a depowdering device (100) according to one of the preceding claims 1-13. [15] Method for depowdering additively manufactured components (102) comprising powder, in particular with a depowdering device according to one of the preceding claims 1-13, comprising the steps: - conveying the components (102) along a conveying path (136) extending from a conveying inlet (132) to a conveying outlet (134) by means of vibration (144), - Removing the powder separated from the components (102) by the vibration (144) from the conveyor line (136) in order to depowder the components (102).
Citation Information
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