-
公开(公告)号：US11413684B2
公开(公告)日：2022-08-16
申请号：US16561628
申请日：2019-09-05
申请人： Desktop Metal, Inc.
IPC分类号： B22F3/10 , B33Y40/00 , B29C64/165 , B29C64/35 , B22F10/20 , B33Y50/00 , B33Y80/00 , B29C64/386 , B29C64/40 , G05B19/4099 , B29C64/357 , B08B3/08 , B29C64/393 , B29C71/00 , B33Y50/02 , B33Y10/00 , B22F5/10 , B22F10/30 , B22F1/10 , B33Y30/00 , G01B21/08
摘要： 3D-printed parts may include binding agents to be removed following an additive manufacturing process. A debinding process removes the binding agents by immersing the part in a solvent bath causing chemical dissolution of the binding agents. The time of exposure of the 3D-printed part to the solvent is determined based on the geometry of the part, wherein the geometry is applied to predict the diffusion of the solvent through the 3D-printed part. The 3D-printed part is then immersed in the solvent bath to remove the binding agent, and is removed from the solvent bath after the time of exposure.
-
公开(公告)号：US11241836B2
公开(公告)日：2022-02-08
申请号：US15949499
申请日：2018-04-10
申请人： Desktop Metal, Inc.
IPC分类号： B29C64/393 , B29C64/118 , B29C64/209 , B33Y50/02 , B29C64/295 , B33Y10/00 , B33Y30/00 , B29C64/227 , B29C64/343 , B29C64/106
摘要： An additive manufacturing apparatus, and corresponding method, determine a mass (or volume) output flow rate of extrudate used in three-dimensional (3D) printing, and such determination is insensitive to rheological properties of a material of the extrudate being printed. A thermal energy balance on a liquefying extrusion head enables a load on a heater, used to heat the extrusion head, to be related to the output flow rate of extrudate. Based on the thermal energy balance, the output flow rate may be determined based on a duty cycle of the heater. The output flow rate may be employed to affect the 3D printing to prevent over- or under-extrusion of the extrudate and to identify a fault condition.
-
公开(公告)号：US20190337053A1
公开(公告)日：2019-11-07
申请号：US16403286
申请日：2019-05-03
申请人： ADDLEAP AB , Desktop Metal, Inc.
IPC分类号： B22F3/00 , B33Y10/00 , B33Y30/00 , B33Y70/00 , B28B1/00 , B28B11/24 , B29C64/165 , B29C64/209
摘要： This invention relates to three-dimensional printing. This invention in particularly relates to a system for drying a paste-based crafting medium during three-dimensional printing and a method thereof. The system can comprise a dual printhead comprising a first dispensing nozzle for depositing the filament material for a mold layer in a flowable fluid form and a second dispensing nozzle for depositing the crafting medium, which is in a paste form. The system also includes a drying means which can be a heating system or a drying apparatus, that in some embodiments can be attached to the printhead. The three-dimensional imaging process for making objects, preferably metal objects or ceramic objects, on a layer-by-layer basis under the control of a data processing system is disclosed. The drying of the object or mold is crucial in the three-dimensional imaging process because it can affect the overall quality of the object. A solution to this problem is achieved in the present invention by using a drying step after finishing each layer of the object (both mold and paste). This is achieved in some embodiments by using a drying apparatus comprising a radiating heater and air circulation fan mounted on to the moving print head. The print head can repeatedly scan the printed layer and apply heat and air circulation to improve drying in a controlled manner. This system and method provides improved evenness in the drying and reduces the risk of cracks developing in the deposited object, and also reduces the risk of further problems during the subsequent processing steps to provide the finished object.
-
4.发明申请公开(公告)号：US20190091933A1
公开(公告)日：2019-03-28
申请号：US15713383
申请日：2017-09-22
申请人： Desktop Metal, Inc.
IPC分类号： B29C64/393 , B29C64/118 , B29C64/364 , B33Y10/00 , B33Y30/00 , B33Y50/02
摘要： In a three-dimensional (3D) printing system and method for printing a 3D object, a material in solid form is elevated in temperature to a point at which the material melts or partially melts and begins to flow from a nozzle as a result of an actuating force or displacement resulting in a force. Since the transfer of heat to the material is central to melting and flow of the material, and the printing process ultimately, it is useful that the material be elevated to the appropriate temperature. By anticipating large fluxes of material through the nozzle and adjusting a heating rate in advance of an increased deposition rate, the material remains melted, and extrusion of the material via the nozzle is not limited by heating.
-
公开(公告)号：US20210260654A1
公开(公告)日：2021-08-26
申请号：US17158673
申请日：2021-01-26
申请人： Desktop Metal, Inc.
发明人： John Reidy , Nihan Tuncer , Animesh Bose , Christopher Craven , Alexander C. Barbati , Ricardo Fulop , Karl-Heinz Schofalvi
摘要： Techniques for debinding additively fabricated parts are described that do not require solvent debinding or catalytic debinding, and that may be performed using only thermal debinding in a furnace. As a result, in at least some cases debinding and sintering may take place sequentially within a single furnace. In some embodiments, the techniques may utilize particular materials as binders that allow for a thermal debinding process that does not negatively affect the parts.
-
公开(公告)号：US10654102B2
公开(公告)日：2020-05-19
申请号：US16561568
申请日：2019-09-05
申请人： Desktop Metal, Inc.
IPC分类号： B22F3/10 , B33Y40/00 , B29C64/165 , B29C64/35 , B22F3/105 , B33Y50/00 , B33Y80/00 , B29C64/386 , B22F3/00 , B29C64/40 , B22F1/00 , G05B19/4099 , B29C64/357 , B08B3/08 , B29C64/393 , B29C71/00 , B33Y50/02 , B33Y10/00 , B22F5/10 , B33Y30/00 , G01B21/08
摘要： 3D-printed parts may include binding agents to be removed following an additive manufacturing process. A debinding process removes the binding agents by immersing the part in a solvent bath causing chemical dissolution of the binding agents. The time of exposure of the 3D-printed part to the solvent is determined based on the geometry of the part, wherein the geometry is applied to predict the diffusion of the solvent through the 3D-printed part. The 3D-printed part is then immersed in the solvent bath to remove the binding agent, and is removed from the solvent bath after the time of exposure.
-
7.发明申请公开(公告)号：US20180297289A1
公开(公告)日：2018-10-18
申请号：US15949499
申请日：2018-04-10
申请人： Desktop Metal, Inc.
IPC分类号： B29C64/393 , B29C64/118 , B29C64/209 , B29C64/227 , B29C64/295 , B33Y10/00 , B33Y30/00 , B33Y50/02
摘要： An additive manufacturing apparatus, and corresponding method, determine a mass (or volume) output flow rate of extrudate used in three-dimensional (3D) printing, and such determination is insensitive to rheological properties of a material of the extrudate being printed. A thermal energy balance on a liquefying extrusion head enables a load on a heater, used to heat the extrusion head, to be related to the output flow rate of extrudate. Based on the thermal energy balance, the output flow rate may be determined based on a duty cycle of the heater. The output flow rate may be employed to affect the 3D printing to prevent over- or under-extrusion of the extrudate and to identify a fault condition.
-
公开(公告)号：US20180297272A1
公开(公告)日：2018-10-18
申请号：US15953380
申请日：2018-04-13
申请人： Desktop Metal, Inc.
发明人： Aaron Preston , Nicholas Mykulowycz , Alexander C. Barbati , Michael A. Gibson , Charles John Haider , Jay Tobia
IPC分类号： B29C64/118 , B29C64/209 , B29C64/393 , B33Y10/00 , B33Y50/02
摘要： Methods of printing an object via a 3-dimensional printer include provide for printed objects having a higher density. A printer head is operated to deposit build material in lines under controlled parameters including lateral position, height, extrustion rate, extrusion temperature, and/or extrusion material. The printer may print first lines forming channels at a given layer, and then second lines to fill those channels. The printer may operate with other approaches to fill gaps between printed lines, such as offset and/or smaller lines aligned with those gaps. The resulting object has greater density while maintaining an accurate object shape.
-
公开(公告)号：US20180237648A1
公开(公告)日：2018-08-23
申请号：US15901818
申请日：2018-02-21
申请人： Desktop Metal, Inc.
IPC分类号： C09D11/34 , C09D11/102 , C09D11/106 , C09D11/023 , B22F7/02 , B22F1/00 , C08G81/02
CPC分类号： B22F3/008 , B22F1/0014 , B22F1/0018 , B22F1/0022 , B22F1/0025 , B22F1/0062 , B22F1/02 , B22F3/10 , B22F7/02 , B22F2301/00 , B22F2301/052 , B22F2301/10 , B22F2301/15 , B22F2301/20 , B22F2301/255 , B22F2301/35 , B22F2302/10 , B22F2302/20 , B22F2302/25 , B22F2302/45 , B22F2304/054 , B22F2304/056 , B22F2304/10 , B33Y10/00 , B33Y50/02 , B33Y70/00 , B33Y80/00 , B82Y30/00 , C08G81/025 , C09D11/023 , C09D11/102 , C09D11/106 , C09D11/34
摘要： Devices, systems, and methods are directed to the use of nanoparticles for improving fabrication of three-dimensional objects formed through layer-by-layer delivery of an ink onto a powder of metal particles in a powder bed. More specifically, the ink may include a carrier, supramolecular assemblies of molecules, and nanoparticles of an inorganic material. The supramolecular assemblies may sequester the nanoparticles of the inorganic material from the carrier to facilitate maintaining the nanoparticles in a stable form, providing a shelf-life suitable for transportation and storage of the ink in large-scale commercial operations. The supramolecular assemblies of the molecules may be disrupted during a fabrication process to release the nanoparticles. The nanoparticles may improve strength of the three-dimensional objects being fabricated and, also or instead, may reduce the likelihood of defects associated with subsequent processing of the three-dimensional objects (e.g., slumping and shrinking and/or inadequate densification of the final part).
-
公开(公告)号：US20180162044A1
公开(公告)日：2018-06-14
申请号：US15842792
申请日：2017-12-14
申请人： Desktop Metal, Inc.
IPC分类号： B29C64/141 , B33Y10/00 , B33Y70/00 , B29C47/00 , B29C47/12 , C09D125/06 , C09D129/04 , C09D171/02 , C09D133/12 , C09D129/14 , C09D123/12 , C09D123/06 , C09D7/61
CPC分类号： B29C64/141 , B22F3/008 , B22F3/1025 , B22F3/1055 , B22F2998/10 , B29B11/10 , B29B11/16 , B29C48/001 , B29C48/02 , B29C48/022 , B29C48/30 , B29C48/301 , B29C48/92 , B29C64/118 , B29C64/165 , B29C64/35 , B29C64/40 , B29K2025/06 , B29K2105/253 , B29K2995/0088 , B33Y10/00 , B33Y40/00 , B33Y70/00 , B33Y80/00 , C08L29/04 , C08L29/14 , C08L2205/02 , C09D7/61 , C09D123/06 , C09D123/12 , C09D125/06 , C09D129/04 , C09D129/14 , C09D133/12 , C09D171/02 , C08L71/02 , C08L23/04 , C08L23/10 , B22F2001/0066 , B22F2003/244 , B22F3/26
摘要： Techniques and compositions are disclosed for feedstocks with powder/binder systems for three-dimensional printing, such as fused filament fabrication. For example, a feedstock may include a first high polymer and a second polymer for supporting a shape of a three-dimensional object through various processing stages. The first polymer may be a moderate or high molecular weight polymer, and the second polymer may be a high molecular weight polymer. The first polymer may provide improved print quality and strength, as compared to a low molecular weight polymer, in initial processing. In a solvent, the first polymer may be preferentially dissolved over the second polymer such that the second polymer may remain to support a net shape of the three-dimensional object in subsequent processing. Accordingly, the combination of the first polymer and the second polymer may be useful for rapid three-dimensional manufacturing of high quality parts.
-
-
-
-
-
-
-
-
-
搜索结果
34 条记录 (耗时 0.023 秒)
