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1. WO2020068066 - METHOD AND APPARATUS FOR DETERMINING EXTRUDATE FLOW IN THREE-DIMENSIONAL (3D) PRINTING

Publication Number WO/2020/068066
Publication Date 02.04.2020
International Application No. PCT/US2018/052914
International Filing Date 26.09.2018
IPC
B29C 64/209 2017.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
20Apparatus for additive manufacturing; Details thereof or accessories therefor
205Means for applying layers
209Heads; Nozzles
B29C 64/393 2017.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
30Auxiliary operations or equipment
386Data acquisition or data processing for additive manufacturing
393for controlling or regulating additive manufacturing processes
B29C 64/118 2017.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
10Processes of additive manufacturing
106using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
118using filamentary material being melted, e.g. fused deposition modelling
B33Y 10/00 2015.01
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
10Processes of additive manufacturing
B33Y 30/00 2015.01
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
30Apparatus for additive manufacturing; Details thereof or accessories therefor
B33Y 50/02 2015.01
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
02for controlling or regulating additive manufacturing processes
CPC
B29C 64/118
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
10Processes of additive manufacturing
106using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
118using filamentary material being melted, e.g. fused deposition modelling [FDM]
B29C 64/209
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
20Apparatus for additive manufacturing; Details thereof or accessories therefor
205Means for applying layers
209Heads; Nozzles
B29C 64/393
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
30Auxiliary operations or equipment
386Data acquisition or data processing for additive manufacturing
393for controlling or regulating additive manufacturing processes
B33Y 10/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
10Processes of additive manufacturing
B33Y 30/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
30Apparatus for additive manufacturing; Details thereof or accessories therefor
B33Y 50/02
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
02for controlling or regulating additive manufacturing processes
Applicants
  • DESKTOP METAL, INC. [US]/[US]
Inventors
  • BARBATI, Alexander, C.
  • MYERBERG, Jonah, Samuel
Agents
  • SHAH, Elizabeth
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR DETERMINING EXTRUDATE FLOW IN THREE-DIMENSIONAL (3D) PRINTING
(FR) PROCÉDÉ ET APPAREIL PERMETTANT DE DÉTERMINER UN ÉCOULEMENT D'EXTRUDAT DANS UNE IMPRESSION TRIDIMENSIONNELLE (3D)
Abstract
(EN)
An additive manufacturing apparatus (100), and corresponding method, determine a mass (or volume) output flow rate (120) of extrudate (112) used in three-dimensional (3D) printing, and such determination is insensitive to rheological properties of a material of the extrudate (112) being printed. A thermal energy balance on a liquefying extrusion head (104) enables a load on a heater (106), used to heat the extrusion head (104), to be related to the output flow rate (120) of extrudate (112). Based on the thermal energy balance (350), the output flow rate (120) may be determined based on a duty cycle (116) of the heater (106). The output flow rate (120) may be employed to affect the 3D printing to prevent over-or under-extrusion of the extrudate(112) and to identify a fault condition.
(FR)
La présente invention concerne un appareil de fabrication additive (100), et un procédé correspondant, qui déterminent un débit de sortie massique (ou volumique) (120) d'extrudat (112) utilisé dans une impression tridimensionnelle (3D), et une telle détermination est insensible aux propriétés rhéologiques d'un matériau de l'extrudat (112) en cours d'impression. Un équilibre d'énergie thermique sur une tête de liquéfaction-extrusion (104) permet à une charge sur un dispositif de chauffage (106), utilisé pour chauffer la tête d'extrusion (104), d'être liée au débit de sortie (120) de l'extrudat (112). Sur la base de l'équilibre d'énergie thermique (350), le débit de sortie (120) peut être déterminé sur la base d'un cycle de service (116) du dispositif de chauffage (106). Le débit de sortie (120) peut être utilisé pour avoir une influence sur l'impression 3D afin d'empêcher une sur-extrusion ou une sous-extrusion de l'extrudat (112) et d'identifier une condition de défaillance.
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