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公开(公告)号：WO2020153941A1
公开(公告)日：2020-07-30
申请号：PCT/US2019/014553
申请日：2019-01-22
发明人： JOWKAR, Mohammad , CHIRON, Adrien , MANSELL, Rhys
IPC分类号： B29C64/165 , B29C64/20 , B29C64/393 , B33Y10/00 , B33Y30/00 , B33Y50/02
摘要： An example of an additive manufacturing apparatus is disclosed. The apparatus comprises a process module to selectively treat a layer of build material from a build chamber formed from at least one sidewall and comprising a build platform moveable within the build chamber. The apparatus also comprises a powder distribution module to form a layer of build material in the build chamber. The apparatus further comprises a controller to receive data corresponding to an object to be generated and control the powder distribution module to form successive layers of build material on the build platform. The controller is further to control the process module to selectively treat portions of the formed layers to generate the object based on the received data and to generate the barrier based on the defined data.
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公开(公告)号：WO2020081059A1
公开(公告)日：2020-04-23
申请号：PCT/US2018/056036
申请日：2018-10-16
IPC分类号： B29C64/35 , B29C64/379 , B33Y40/00 , B08B3/12
摘要： In certain examples, a build volume post-processing system comprises a container, a fluid delivery system, and an agitation system. The container may comprise a cavity, the cavity to receive a build volume comprising build material and at least one three-dimensional object. The fluid delivery system may deliver a fluid into the cavity. The agitation system may, in use, cause agitation of the fluid to separate the build material from the at least one printed three-dimensional object window.
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公开(公告)号：WO2020081058A1
公开(公告)日：2020-04-23
申请号：PCT/US2018/056029
申请日：2018-10-16
IPC分类号： B29C64/205 , B29C64/343 , B29C64/329 , B33Y30/00 , B33Y40/00
摘要： In one example, a material dispensing apparatus comprises a plurality of material containers, wherein the plurality of material containers comprises a first set of material containers arranged to contain a first material and a second set of material containers arranged to contain a second, different, material, and each material container of the second set is located relative to a respective material container of the first set to form a pair of material containers. In use, the material dispensing apparatus is controllable to move across a build platform of an additive manufacturing system. Each of the plurality of material containers comprises an outlet mechanism that is independently controllable, relative to outlet mechanisms of others of the plurality of material containers, such that each pair of material containers selectively dispenses at least a portion of a respective amount of material onto a respective portion of the build platform as the material dispensing apparatus moves across the build platform, such that, collectively, the plurality of material containers forms a complete layer of material on the build platform as the material dispensing apparatus performs a single pass across the build platform.
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公开(公告)号：WO2021061167A1
公开(公告)日：2021-04-01
申请号：PCT/US2019/053761
申请日：2019-09-30
摘要： According to one aspect, there is provided a method of cleaning a 3D object on a platform. The method comprises generating with a cleaning module a cleaning airflow to remove powder particles from a 3D object and an extraction airflow to extract any removed powder particles, determining a quantity of powder particles in the extraction airflow, and moving the cleaning module relative to the platform based on the determined quantity of powder particles.
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公开(公告)号：WO2021010954A1
公开(公告)日：2021-01-21
申请号：PCT/US2019/041775
申请日：2019-07-15
摘要： An example of a self-cleaning apparatus for a 3D system is disclosed. The apparatus comprises a surface on which build material accumulates during a 3D printing operation. The surface has a profile that slopes generally down towards a collection point. The apparatus also comprises the collection point located in the surface to drain build material from the surface. The apparatus further comprises a vibrating source to cause the surface to vibrate. The apparatus also comprises a controller to control the vibrating source to vibrate, upon determining that a cleaning operation is to be performed, to drive build material accumulated on the surface towards the collection point.
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公开(公告)号：WO2022010466A1
公开(公告)日：2022-01-13
申请号：PCT/US2020/041130
申请日：2020-07-08
IPC分类号： B41J29/38 , B41J29/393 , B29C64/30 , B33Y40/00 , B22F10/00 , B29C64/209 , B29C64/393 , B33Y50/02
摘要： According to one aspect, there is provided a method of detecting printhead issues in a printer. The method comprises obtaining an image to be printed, generating a first sub-pattern and a second sub-pattern, wherein the first sub-pattern in a pattern to be printed in a first pass comprising a pattern suitable to enable the detection of a printhead issue and wherein the second sub-pattern is the complementary pattern that completes the first sub-pattern such that printing the first and second sub-patterns is equivalent to printing the obtained image, printing the first sub-pattern on a print target, obtaining an image of the printed first sub-pattern, analysing the image of the printed first sub-pattern to determine the presence of a printhead issue and, where appropriate, performing a printhead maintenance operation, and printing the second sub-pattern on the print target.
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公开(公告)号：WO2021061164A1
公开(公告)日：2021-04-01
申请号：PCT/US2019/053649
申请日：2019-09-27
发明人： JOWKAR, Mohammad , MANSELL, Rhys , CHIRON, Adrien
IPC分类号： B29C64/255 , B29C64/329 , B29C64/343 , B33Y30/00 , B33Y40/00
摘要： Utilising overflow build material by providing build material on a material platform, spreading the build material from the material platform across a build platform and to an overflow build material platform, such that, overflow build material is collected in an overflow build material store, providing additional build material on a further material platform, and utilising the additional build material and the overflow material collected in the overflow build material store by spreading the additional build material and the overflow build material across the build platform.
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公开(公告)号：WO2020081056A1
公开(公告)日：2020-04-23
申请号：PCT/US2018/056022
申请日：2018-10-16
IPC分类号： B29C64/205 , B29C64/255 , B33Y30/00 , B29C64/393 , B33Y50/02
摘要： In an example, a method comprises controlling material dispensing by a material dispensing apparatus to output a layer of material onto a build platform. The material dispensing apparatus comprises a plurality of pairs of material containers, each pair of material containers movable along a path across the build platform, and comprising a first material container to dispense a first material and a second material container to dispense a second material, to output a band of material along the path, each pair of material containers being arranged with respect to each other pair of material containers to move along respective paths across the build platform to output respective bands of material forming a complete layer of material on the build platform. The controlling comprises controlling each pair of material containers to move along its respective path and deposit, selectively, first material, along one or more regions of the respective band along the respective path that coincide with a portion of a part to be printed, and deposit, selectively, second material, along other regions of the respective band along the respective path.
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公开(公告)号：WO2023069090A1
公开(公告)日：2023-04-27
申请号：PCT/US2021/055821
申请日：2021-10-20
IPC分类号： B29C64/364 , B29C64/205 , B33Y40/00 , B33Y30/00 , B22F10/32 , B22F12/50
摘要： According to an example, a three-dimensional printer comprises a process chamber defining a process volume, a carriage to reciprocate laterally within the process volume and divining the process volume into a first sub-volume and a second sub-volume, a first pressurizing member in fluidic communication with one of the first sub-volume and the second sub-volume, and a controller to control the first pressurizing member to modify the pressure of one of the first sub-volume and the second sub-volume as the carriage moves through the process volume to reduce an airflow through a gap formed between the carriage and a base of the process volume.
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公开(公告)号：WO2021221599A1
公开(公告)日：2021-11-04
申请号：PCT/US2020/030030
申请日：2020-04-27
IPC分类号： B29C64/371 , B33Y10/00 , B33Y40/00
摘要： A 3D printing apparatus to dehumidify and recycle a gas from a 3D printer is disclosed herein. The apparatus comprises: a gas inlet to receive a gas flow from a 3D printer, the gas flow comprising gas with evaporated solvents to be cleaned; a heat exchanger to dehumidify the gas flow from the evaporated solvents, the heat exchanger to cool the gas flow by heat transfer to a cold liquid stream from a chiller to saturate and condensate the solvents from the gas flow; a gas outlet to output the dehumidified gas flow back to the 3D printer; and a controller. The controller is to receive a humidity and temperature measurements from a sensor located downstream from the heat exchanger; compare the humidity and temperature measurements with a target humidity and a target temperature respectively; and control a chiller valve from the chiller based on the comparison to adjust the temperature of the gas flow to set an absolute humidity of the gas flow to a predeterminable value.
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