CN117301507A - Multi-material extrusion forming additive manufacturing method and equipment based on in-situ secondary melting - Google Patents
Multi-material extrusion forming additive manufacturing method and equipment based on in-situ secondary melting Download PDFInfo
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- CN117301507A CN117301507A CN202311546908.8A CN202311546908A CN117301507A CN 117301507 A CN117301507 A CN 117301507A CN 202311546908 A CN202311546908 A CN 202311546908A CN 117301507 A CN117301507 A CN 117301507A
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- 239000000463 material Substances 0.000 title claims abstract description 174
- 238000002844 melting Methods 0.000 title claims abstract description 108
- 230000008018 melting Effects 0.000 title claims abstract description 89
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000000654 additive Substances 0.000 title claims abstract description 25
- 230000000996 additive effect Effects 0.000 title claims abstract description 25
- 238000001125 extrusion Methods 0.000 title claims description 21
- 238000011065 in-situ storage Methods 0.000 title claims description 14
- 238000007639 printing Methods 0.000 claims abstract description 47
- 238000010146 3D printing Methods 0.000 claims abstract description 24
- 238000000151 deposition Methods 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 17
- 239000004626 polylactic acid Substances 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 8
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 6
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004677 Nylon Substances 0.000 claims description 2
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 229920000747 poly(lactic acid) Polymers 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 6
- 238000002955 isolation Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 206010035148 Plague Diseases 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012761 high-performance material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive 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
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive 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
- B29C64/10—Processes of additive manufacturing
- B29C64/188—Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive 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
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive 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
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
- B29C64/336—Feeding of two or more materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive 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
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE 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
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE 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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
Abstract
According to the melting temperature of different materials and CAD data of a multi-material model, determining the printing sequence and the printing path of different materials, and respectively depositing and forming corresponding areas on a 3D printing platform according to the CAD data of the multi-material model; depositing and forming the low-melting material with the lowest melting temperature on a 3D printing platform to form a pure material layer; directly depositing and forming a high-melting material with a higher melting temperature on a pure material layer through a first nozzle, wherein the height of the first nozzle from a 3D printing platform is slightly lower than that of the second nozzle when printing a low-melting material, so that a secondary melting area is formed on a path passed by the first nozzle, namely: the contact area of the pure material layer and the first spray head is melted again, so that high-melting material is embedded; high-strength integrated forming for multi-material additive manufacturing is repeatedly realized; the invention has high interface strength, and can not generate defects such as cracking, peeling and the like.
Description
Technical Field
The invention belongs to the technical field of additive manufacturing, and particularly relates to a multi-material extrusion forming additive manufacturing method and equipment based on in-situ secondary melting.
Background
The technology of multi-material extrusion forming additive manufacturing belongs to the construction of three-dimensional models with complex internal structures by alternately extruding and stacking different materials layer by layer. Existing multi-material extrusion additive manufacturing equipment often adopts a multi-nozzle or single-nozzle extrusion system with a plurality of channels, and controls the alternate melt deposition of materials on a forming platform to realize the cooperative manufacturing of a plurality of materials. The multi-material extrusion forming process has stronger material compatibility, and formable materials comprise resin, low-melting-point metal, fiber and the like, so that the layer-by-layer superposition of different materials can be realized in the same construction process, and a composite material structure with multiple functions is created. In addition, the multi-material additive manufacturing technology also provides a new playing space for light-weight design, and the essence of the multi-material additive manufacturing technology is to replace structural complexity with material complexity, so that under the condition that geometric space design is limited or the requirement on the weight of a product is severe, the requirements of mechanical strength and light weight of the product are met by adopting materials with different properties, and the development trend of light-weight high-performance materials is met.
The multi-material extrusion forming additive manufacturing technology (publication number: CN116198111A, name: a high-temperature melt extrusion continuous fiber/resin double-nozzle quick-change 3D printing head) can integrally form a more complex and fine structure, meets the requirement of high-degree customization of the engineering application field on the performance and appearance of the product, and is particularly suitable for the fields of medical treatment, aerospace, automobiles and the like; however, the interfacial bonding strength is always an important problem which plagues the multi-material extrusion molding additive manufacturing technology, and the interfacial bonding strength is weakened, and defects such as cracking, peeling and the like are generated due to the fact that the forming process parameters and physical properties of different materials are different, so that the material transition region is difficult to form in the printing process.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a multi-material extrusion forming additive manufacturing method and equipment based on in-situ secondary melting, which have high interface strength and can not generate the defects of cracking, stripping and the like.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
according to the multi-material extrusion forming additive manufacturing method based on in-situ secondary melting, materials are sequentially alternated and deposited according to melting temperature differences of different materials, and mutual embedding forming of the different materials in a transition area is achieved through secondary melting of the deposited material layers.
An in-situ secondary melting-based multi-material extrusion forming additive manufacturing method comprises the following steps:
1) Determining the printing sequence and the printing path of different materials according to the melting temperature and the forming area of different forming materials and combining CAD data of a multi-material model;
2) The high melting material 1 is extruded through a first nozzle 3; the low melting material 2 is extruded through the second nozzle 4; respectively depositing and forming corresponding areas on the 3D printing platform 7 according to CAD data of the multi-material model in the printing process;
3) The low melting material 2 with the lowest melting temperature is deposited and formed on the 3D printing platform 7 first to form a pure material layer 5;
4) The high-melting material 1 with the higher melting temperature is then deposited directly onto the pure material layer 5 for forming, wherein the height of the first jet 3 from the 3D printing table 7 is slightly lower than the height of the second jet 4 when printing the low-melting material 2, so that a secondary melting zone 6 is formed in the path followed by the first jet 3, namely: the contact area of the pure material layer 5 with the first nozzle 3 will be melted again, thereby embedding the high melting material 1;
5) Repeating the steps 3) -4), sequentially alternating and depositing materials according to the melting temperature difference of different materials, and realizing the mutual embedded forming of different materials in a transition area by secondarily melting the deposited material layers, thereby realizing the high-strength integrated forming of multi-material additive manufacturing.
The high melting material 1 comprises a non-metallic material with high printing temperature and metal wires or fiber materials which are used as reinforcing phases and are added into a non-melting material of a printing substrate; the nonmetallic materials with high printing temperature are polyether ether ketone (PEEK), nylon (PA), acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC) and the like, and the metal wires are copper wires, stainless steel wires and the like; the fiber material is carbon fiber, glass fiber, aramid fiber, etc.
The low melting material 2 includes materials with low printing temperature, including polylactic acid (PLA), thermoplastic polyurethane elastomer (TPU), polyvinyl alcohol (PVA) and the like.
The multi-material extrusion forming additive manufacturing equipment based on in-situ secondary melting comprises a first spray head 3 for printing high-melting materials 1 and a second spray head 4 for printing low-melting materials 2, wherein each printing material is correspondingly provided with one spray head, and all spray heads form printing pieces on a 3D printing platform 7.
Compared with the existing multi-material additive manufacturing technology, the method has the following beneficial effects:
according to the invention, the deposition sequence of different materials on a 3D printing platform is determined according to the 3D printing forming temperature of the different materials, a pure material layer is formed on the 3D printing platform by firstly forming the low melting material, then a secondary melting region is directly formed on the pure material layer through a spray head with a higher temperature according to CAD model data, so that the high melting material with the higher melting temperature is embedded into the low melting material, the interface mutual melting of the different materials is realized, a transition layer is formed at the interface of the prepared multiple materials, and compared with the existing method (the alternative parallel forming of the different materials), the method has higher interface strength, thereby effectively avoiding the problem that the interface region of the different materials is easy to peel.
Drawings
FIG. 1 is a schematic view of the whole multi-material extrusion molding additive manufacturing apparatus based on in-situ secondary melting in accordance with example 1 of the present invention.
FIG. 2 is a partial schematic view of the secondary molten zone where PLA has been formed by the first nozzle in example 1 of the invention.
Fig. 3 is a partial schematic view of the high melting temperature copper wire material of example 1 of the present invention embedded in a low melting temperature PLA material.
Fig. 4 is a diagram of a sample of a copper wire/PLA bi-material thermal flow control board made in accordance with example 1 of the present invention.
Fig. 5 is a partial photomicrograph of a sample of a copper wire/PLA bi-material thermal flow control plate made in accordance with example 1 of the present invention.
Fig. 6 is a schematic view of a vibration isolation superstructure according to embodiment 2 of the present invention.
Detailed Description
The invention is described in detail below with reference to the drawings and examples.
Embodiment 1, a multi-material extrusion molding additive manufacturing device based on in-situ secondary melting, includes a first nozzle 3 for printing a high-melting material 1, and a second nozzle 4 for printing a low-melting material 2, wherein the first nozzle 3 and the second nozzle 4 form a printing piece on a 3D printing platform 7.
The hot flow control plate for preparing the copper wire embedded PLA material is a multi-material extrusion forming additive manufacturing method based on in-situ secondary melting, and comprises the following steps:
1) Determining the printing sequence and the printing path of different materials according to the melting temperature and the forming area of different forming materials and combining CAD data of a multi-material model;
referring to fig. 1, in the present embodiment, the high melting material 1 is a metal wire copper wire, the low melting material 2 is PLA, and the printing paths of the high melting material 1 and the low melting material 2 can be generated according to the structural design of the heat flow control board and stored in the 3D printing code file;
2) The high melting material 1 is extruded through a first nozzle 3; the low melting material 2 is extruded through the second nozzle 4; respectively depositing and forming corresponding areas on the 3D printing platform 7 according to CAD data of the multi-material model in the printing process;
the melting temperature of the low melting material 2 is 175 ℃, the low melting material is extruded through the second nozzle 4, and the 3D printing temperature is generally set between 190 ℃ and 220 ℃; the melting point of the high melting material 1 is 1083 ℃, the high melting material is extruded through the first nozzle 3, the temperature of the first nozzle 3 can be set to 240 ℃ in the printing process, and the formed PLA layer passing through the first nozzle 3 can be melted for the second time;
3) Printing a layer of low-melting material 2 on a 3D printing platform 7 through a second spray head 4 according to the structural design of a heat flow control plate to form a pure material layer 5;
4) Then according to the printing path of the high melting material 1 in the thermal flow control plate model file, embedding and depositing the high melting material 1 in the corresponding area of the pure material layer 5 through the first nozzle 3 to form a secondary melting area 6, as shown in fig. 2 and 3;
5) Repeating the steps 3) -4), sequentially alternating and depositing materials according to the melting temperature difference of different materials, and realizing the mutual embedding formation of different materials in a transition area by secondarily melting the deposited material layers, thereby realizing the high-strength integrated formation of the copper wire/PLA dual-material heat flow control plate.
The beneficial effects of this embodiment are: the sample of the copper wire/PLA bi-material heat flow control plate printed in the embodiment is shown in fig. 4, and the partial light-mirror photograph of the sample is shown in fig. 5, so that the copper wire is embedded into the PLA layer in the printing process, and the interface strength of the bi-material is effectively enhanced.
Embodiment 2, a multi-material extrusion molding additive manufacturing device based on in-situ secondary melting is the same as embodiment 1, and the dual-material vibration isolation superstructure is prepared in this embodiment, and a multi-material extrusion molding additive manufacturing method based on in-situ secondary melting comprises the following steps:
1) Determining the printing sequence and the printing path of different materials according to the melting temperature and the forming area of different forming materials and combining CAD data of a multi-material model;
referring to fig. 1, the high melting material 1 of the present embodiment is TPU material, the low melting material 2 is PLA, and the printing paths of the high melting material 1 and the low melting material 2 can be generated according to the design of the vibration isolation superstructure (as shown in fig. 6) and stored in the 3D printing code file;
2) The high melting material 1 is extruded through a first nozzle 3; the low melting material 2 is extruded through the second nozzle 4; respectively depositing and forming corresponding areas on the 3D printing platform 7 according to CAD data of the multi-material model in the printing process;
the melting temperature of the low melting material 2 is 175 ℃, the low melting material is extruded through the second nozzle 4, and the 3D printing temperature is generally set between 190 ℃ and 220 ℃; the melting point of the high melting material 1 is 190 ℃, the high melting material is extruded through the first nozzle 3, the temperature of the first nozzle 3 can be set to 210 ℃ in the printing process, and the formed PLA layer passing through the first nozzle 3 can be melted for the second time;
3) Printing a layer of low-melting material 2 on a 3D printing platform 7 through a second spray head 4 according to the structural design of the vibration isolation unit to form a pure material layer 5;
4) Then according to the printing path of the high melting material 1 in the model file of the vibration isolation superstructure, embedding and depositing the high melting material 1 in the corresponding area of the pure material layer 5 through the first spray head 3 to form a secondary melting area 6;
5) Repeating the steps 3) -4), sequentially alternating and depositing materials according to the melting temperature difference of different materials, and realizing the mutual embedded forming of different materials in a transition area by secondarily melting the deposited material layers, thereby realizing the high-strength integrated forming of the TPU/PLA dual-material vibration isolation super-structure unit.
Claims (5)
1. The multi-material extrusion forming additive manufacturing method based on in-situ secondary melting is characterized by comprising the following steps of: according to the difference of melting temperatures of different materials, the materials are sequentially alternated and deposited, and the mutual embedding formation of the different materials in the transition area is realized through secondary melting of the deposited material layers.
2. The multi-material extrusion forming additive manufacturing method based on in-situ secondary melting is characterized by comprising the following steps of:
1) Determining the printing sequence and the printing path of different materials according to the melting temperature and the forming area of different forming materials and combining CAD data of a multi-material model;
2) Extruding the high-melting material (1) through a first nozzle (3); extruding the low-melting material (2) through a second nozzle (4); depositing and forming corresponding areas on a 3D printing platform (7) according to CAD data of the multi-material model in the printing process;
3) The low-melting material (2) with the lowest melting temperature is deposited and formed on the 3D printing platform (7) firstly to form a pure material layer (5);
4) The high-melting material (1) with higher melting temperature is then deposited directly onto the pure material layer (5) for forming, wherein the height of the first nozzle (3) from the 3D printing platform (7) is slightly lower than the height of the second nozzle (4) when printing the low-melting material (2), so that a secondary melting area (6) is formed in the path followed by the first nozzle (3), namely: the contact area of the pure material layer (5) and the first spray head (3) is melted again, so that the high melting material (1) is embedded;
5) Repeating the steps 3) -4), sequentially alternating and depositing materials according to the melting temperature difference of different materials, and realizing the mutual embedded forming of different materials in a transition area by secondarily melting the deposited material layers, thereby realizing the high-strength integrated forming of multi-material additive manufacturing.
3. The method according to claim 2, characterized in that: the high melting material (1) is a non-metal material with high printing temperature and a metal wire or a fiber material which is used as a reinforcing phase and is added into a non-melting material of a printing substrate; the nonmetallic materials with high printing temperature are polyether ether ketone (PEEK), nylon (PA), acrylonitrile-butadiene-styrene copolymer (ABS) and Polycarbonate (PC), and the metal wires are copper wires and stainless steel wires; the fiber material is carbon fiber, glass fiber and aramid fiber.
4. The method according to claim 2, characterized in that: the low melting material (2) is a material with low printing temperature and comprises polylactic acid (PLA), thermoplastic polyurethane elastomer (TPU) and polyvinyl alcohol (PVA).
5. Manufacturing equipment for implementing the method of claim 2, characterized in that: the printing device comprises a first spray head (3) for printing high-melting materials (1) and a second spray head (4) for printing low-melting materials (2), wherein each printing material is correspondingly provided with one spray head, and all spray heads form printing pieces on a 3D printing platform (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311546908.8A CN117301507A (en) | 2023-11-20 | 2023-11-20 | Multi-material extrusion forming additive manufacturing method and equipment based on in-situ secondary melting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311546908.8A CN117301507A (en) | 2023-11-20 | 2023-11-20 | Multi-material extrusion forming additive manufacturing method and equipment based on in-situ secondary melting |
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| Publication Number | Publication Date |
|---|---|
| CN117301507A true CN117301507A (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311546908.8A Pending CN117301507A (en) | 2023-11-20 | 2023-11-20 | Multi-material extrusion forming additive manufacturing method and equipment based on in-situ secondary melting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117301507A (en) |
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- 2023-11-20 CN CN202311546908.8A patent/CN117301507A/en active Pending
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