CN111823576A - Composite 3D printing technology based on fused deposition and photocuring technology - Google Patents
Composite 3D printing technology based on fused deposition and photocuring technology Download PDFInfo
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- CN111823576A CN111823576A CN202010709795.9A CN202010709795A CN111823576A CN 111823576 A CN111823576 A CN 111823576A CN 202010709795 A CN202010709795 A CN 202010709795A CN 111823576 A CN111823576 A CN 111823576A
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- fused deposition
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- 238000005516 engineering process Methods 0.000 title claims abstract description 58
- 230000008021 deposition Effects 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000010146 3D printing Methods 0.000 title claims abstract description 15
- 238000000016 photochemical curing Methods 0.000 title claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000007639 printing Methods 0.000 claims abstract description 10
- 238000001723 curing Methods 0.000 claims abstract description 7
- 238000007711 solidification Methods 0.000 claims abstract description 3
- 230000008023 solidification Effects 0.000 claims abstract description 3
- 239000008358 core component Substances 0.000 claims abstract 2
- 230000003287 optical effect Effects 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 claims description 2
- 229920003051 synthetic elastomer Polymers 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 239000001993 wax Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 3
- 239000000306 component Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
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]
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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
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
- B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
- B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
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- 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
Abstract
A composite 3D printing technology based on fused deposition and photocuring technology belongs to the technical field of additive manufacturing. The composite 3D printing technology is realized by depending on a brand-new composite 3D printer, and a printer nozzle integrates components required by a fused deposition technology and a core component laser generator of a photocuring technology. During working, the raw materials are extruded out through a fused deposition nozzle and are solidified on a working platform; the working platform is arranged in the liquid tank filled with photosensitive resin and is always kept flush with the liquid level of the resin; after the raw material extruded by the nozzle finishes printing one layer thickness on the working platform, the working platform descends one layer thickness height under the control of the stepping motor and is immersed into the photosensitive resin; at the moment, a laser generator fixed on the heating block bracket generates laser, and scans and solidifies the surface of the fused deposition part immersed in the photosensitive resin; after the scanning and solidification are finished, the fused deposition nozzle prints the next layer on the stacked entity; and continuously repeating the process until the whole part is printed. The printed product has the characteristics of high surface precision and good mechanical property, and the invention has wide material selection range, can promote the wide application of fused deposition products, and promotes the further development of fused deposition technology and light curing technology.
Description
Technical Field
The patent relates to a compound 3D printing technology, in particular to a compound 3D printing technology of fused deposition technology and photocuring technology, and belongs to the technical field of additive manufacturing.
Background
Because the fused deposition equipment is low in price and environment-friendly in material, the fused deposition technology is one of the most widely applied rapid forming technologies at present. The fused deposition technology is widely applied to industries such as automobile manufacturing, machining, precision casting, aerospace, medical treatment, artware manufacturing, toys for children and the like, and remarkable economic benefits are obtained. However, the products manufactured by the technology have poor mechanical properties and low surface precision, and further development and application of the technology are limited. The photocuring technology is used as another mature additive manufacturing technology, has the characteristics of high forming speed, high product precision and the like, and is widely applied to industries such as original product development, mold manufacturing and the like.
The low strength of the fused deposition product is mainly limited by the technology itself, except for the raw material itself. Due to the inherent defects of the fused deposition technology, the internal porosity of the product is high, and the bonding strength between adjacent wires is insufficient, so that the strength of the product printed by the technology is insufficient; the low surface precision of the product is mainly caused by the step surface generated in the fused deposition forming process by the technology. The main methods for solving the problems of low strength, poor surface precision and the like of fused deposition products at present are to optimize molding parameters and add reinforcing phases such as fibers and the like into raw materials. However, the method does not substantially solve the problems of low product strength, poor surface precision and the like caused by inherent defects of the fused deposition technology, and a composite 3D printing technology which can combine the fused deposition technology with the light curing technology is rarely available at home and abroad.
In order to overcome the defects of the prior art, the invention aims to provide a hybrid 3D printing technology which combines a fused deposition technology and a light curing technology. The advantages of the two technologies are respectively utilized, so that the internal density of the fused deposition product can be improved, the porosity is reduced, the bonding strength between adjacent layers is improved, and the tensile strength of the product is further improved; but also can improve the surface precision of the product, thereby promoting the further development and application of the fused deposition technology and the light curing technology.
Disclosure of Invention
The invention provides a composite 3D printing technology based on fused deposition and photocuring technology.
The technical scheme of the invention comprises the following steps:
step 1: the composite 3D printing technology is realized by depending on a brand-new composite 3D printer, and the printer comprises a heating block, wherein a heating element and a temperature sensor are arranged in the heating block. The heating element heats the heating block to a temperature required by melting of the fused deposition raw material and is controlled by the temperature sensor.
Step 2: and a raw material inlet and outlet channel is formed in the middle of the heating block, and the raw material enters the heating block through a pneumatic connector and a radiating pipe which are arranged above the heating block, is melted by the heating block, is extruded through a nozzle and is solidified on the working platform.
And step 3: the heating block is externally connected with a support, the support is connected with an optical axis, and the optical axis is controlled by a stepping motor, so that planar motion of the spray head X, Y can be realized.
And 4, step 4: the working platform is arranged in a liquid tank filled with photosensitive resin and is controlled by a lead screw to move up and down, and the initial position of the working platform is flush with the liquid level of the photosensitive resin in the liquid tank.
And 5: after the raw material extruded from the nozzle is printed one layer thick on the work platform, the work platform is lowered one layer thick under the control of the stepping motor and is immersed into the photosensitive resin.
Step 6: the laser generator fixed to the heating block holder generates laser light and scans and solidifies the surface of the fused deposition part immersed in the photosensitive resin.
And 7: after the scanning solidification is completed, the fused deposition nozzle prints the next layer on the stacked entity. And continuously repeating the process until the whole part is printed.
The invention has the advantages that:
(1) the forming precision is high. The composite 3D printer technology utilizes the photocuring technology to print the outer surface of a product, and the photocuring technology has the characteristic of high forming precision, so that the surface precision of a fused deposition product can be obviously improved.
(2) The product performance is good. The composite printing technology adopts a forming method of stacking and scanning, on one hand, the density inside a fused deposition product can be improved, the porosity is reduced, on the other hand, the bonding strength between adjacent layers can be improved, so that the integral mechanical performance of the fused deposition product is improved, and the wider application of the fused deposition technology and the light curing technology is promoted.
(3) The material selection range is wide. The forming material can be selected from low-melting point materials such as paraffin, ABS, PLA, PP, artificial rubber, cast wax, polyester thermoplastic and the like, wires such as low-melting point metal, ceramics and the like, and also can be a mixture of a high polymer material, short fibers and continuous fibers, and has small material selection limitation and various applicable materials.
Drawings
Fig. 1(a) and 1(b) are schematic diagrams of a composite 3D printing technique based on fused deposition and photocuring techniques according to the present invention.
In the figure, 1, a screw rod, 2, a liquid groove, 3, a fastening screw, 4, an X-direction laser generator, 4-1X-direction laser generators, 5, a heating element, 6, a heating block, 7, a throat pipe, 8, raw materials, 9, a pneumatic connector, 10, a radiating pipe, 11, a temperature sensor, 12, a Y-direction laser generator, 12-1, a Y-direction laser generator, 13, a connecting frame, 13-1, a fixing frame, 14, a laser fixing frame, 15, a bolt, 16, a heating block support, 17, an optical axis, 18, a nozzle and 19 are working platforms.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention is a compound 3D printing technology based on fused deposition and photocuring technology, the schematic diagram of the technology is shown in figure 1, the technology comprises a heating block 6, a heating element 5 and a temperature sensor 11 are arranged in the heating block, the heating element 5 is fixed in the heating block 6 through a fastening screw 3, and the temperature sensor is fixed with the heating block 6 through interference fit; establish raw and other materials passageway in heating block 6, run through to the bottom by the top, top passage mouth passes through threaded connection with choke 7, and the choke 7 other end passes through the screw thread to be connected with cooling tube 10, and the cooling tube then passes through threaded connection with pneumatic connector 9. The heating block 6 is fixed on the connecting frame 13 through a heating block support 16 by bolts, the connecting frame 13 is integrated with the fixed frame 13-1, the optical axis 17 passes through the fixed frame 13-1 and drives the nozzle to move in the X direction, and the other end of the optical axis is driven by the stepping motor to move in the Y direction. The laser fixing bracket 14 is fixed with the fixing bracket 13 by bolts 15, and the laser generators 4 and 4-1 in the X direction and the laser generators 12 and 12-1 in the Y direction are respectively fixed in the X, Y direction of the laser bracket 14. The nozzle 18 is screwed to the bottom of the channel in the heating block 6.
When the device works, the material 8 enters the channel arranged in the heating block 6 through the pneumatic connector 9, the radiating pipe 10 and the throat pipe 7, is heated and melted by the heating element 5 on the heating block 6, is extruded by the nozzle 18 and is solidified on the working platform 19. The working platform is arranged in the liquid tank 2 filled with photosensitive resin and is controlled by the lead screw 1 to move up and down, and the working platform 19 is flush with the liquid level of the photosensitive resin in the liquid tank 2. When the nozzle 18 is driven by the heating block 6, the connecting frame 13, the fixing frame 13-1 and the optical axis 17 to complete printing in the X, Y plane on the working platform 19, the working platform 19 is driven by the screw rod 1 to descend by a layer thickness, the part of the working platform 19 which is just piled up is just immersed in the photosensitive resin in the liquid tank 2, and the upper surface of the piled part is just level with the liquid level of the photosensitive resin in the liquid tank 2. At this time, the X-direction laser generators 4 and 4-1 and the Y-direction laser generators 12 and 12-1 are simultaneously operated to scan and cure the solid surface immersed in the photosensitive resin. After the completion of the scan curing, the nozzle 18 continues printing the next layer on the upper surface of the build-up solid. And continuously repeating the process until the printing of the whole product is finished.
Claims (2)
1. A composite 3D printing technology based on fused deposition and photocuring technology is characterized by comprising the following steps:
step 1: the composite 3D printing technology is realized by depending on a brand-new composite 3D printer, and the printer comprises a heating block, wherein a heating element and a temperature sensor are arranged in the heating block. The heating element heats the heating block to a temperature required by melting of the fused deposition raw material and is controlled by the temperature sensor.
Step 2: and a raw material inlet and outlet channel is formed in the middle of the heating block, and the raw material enters the heating block through a pneumatic connector and a radiating pipe which are arranged above the heating block, is melted by the heating block, is extruded through a nozzle and is solidified on the working platform.
And step 3: the heating block is externally connected with a support, the support is connected with an optical axis, and the optical axis is controlled by a stepping motor, so that planar motion of the spray head X, Y can be realized.
And 4, step 4: the working platform is arranged in a liquid tank filled with photosensitive resin and is controlled by a lead screw to move up and down, and the initial position of the working platform is flush with the liquid level of the photosensitive resin in the liquid tank.
And 5: after the raw material extruded from the nozzle is printed one layer thick on the work platform, the work platform is lowered one layer thick under the control of the stepping motor and is immersed into the photosensitive resin.
Step 6: the laser generator fixed to the heating block holder generates laser light and scans and solidifies the surface of the fused deposition part immersed in the photosensitive resin.
And 7: after the scanning solidification is completed, the fused deposition nozzle prints the next layer on the stacked entity. And continuously repeating the process until the whole part is printed.
2. A composite 3D printing technique based on fused deposition and photocuring techniques as described in claim 1, wherein:
(1) a laser generator of a core component of a photocuring technology is fixed on a spray head of a fused deposition printer, so that the alternating and composite work of two printing technologies is realized.
(2) The working platform required by the fused deposition printing process is embedded in the resin liquid tank required by the photocuring printing process, and the surface of the working platform is always kept flush with the liquid level of the photosensitive resin in the liquid tank.
(3) The fused deposition technology and the light curing technology are combined, and the combined printing of the two technologies is realized on the same printer.
(4) The fused deposition raw materials required by the composite printing technology not only comprise low-melting-point materials such as paraffin, ABS, PLA, PP, artificial rubber, cast wax, polyester thermoplastic and the like, and wires such as low-melting-point metal, ceramic and the like, but also comprise a mixture of a high polymer material, short fibers and continuous fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010709795.9A CN111823576A (en) | 2020-07-22 | 2020-07-22 | Composite 3D printing technology based on fused deposition and photocuring technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010709795.9A CN111823576A (en) | 2020-07-22 | 2020-07-22 | Composite 3D printing technology based on fused deposition and photocuring technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111823576A true CN111823576A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010709795.9A Pending CN111823576A (en) | 2020-07-22 | 2020-07-22 | Composite 3D printing technology based on fused deposition and photocuring technology |
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| Country | Link |
|---|---|
| CN (1) | CN111823576A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112500143A (en) * | 2020-11-25 | 2021-03-16 | 西安国宏中天增材技术有限公司 | Silicon-based ceramic core slurry and application thereof |
| CN115157657A (en) * | 2021-04-06 | 2022-10-11 | 清锋（北京）科技有限公司 | 3D printing device based on photocuring and using method thereof |
| WO2022222184A1 (en) * | 2021-04-21 | 2022-10-27 | 南京航空航天大学 | Dlp and fdm-based composite multi-material additive manufacturing apparatus and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107471632A (en) * | 2017-08-22 | 2017-12-15 | 北京梦之墨科技有限公司 | A kind of metal and the nonmetallic compound manufacturing equipment and manufacture method for increasing material |
| CN107627602A (en) * | 2017-09-30 | 2018-01-26 | 宁波华狮智能科技有限公司 | A kind of composite 3D printer and Method of printing |
-
2020
- 2020-07-22 CN CN202010709795.9A patent/CN111823576A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107471632A (en) * | 2017-08-22 | 2017-12-15 | 北京梦之墨科技有限公司 | A kind of metal and the nonmetallic compound manufacturing equipment and manufacture method for increasing material |
| CN107627602A (en) * | 2017-09-30 | 2018-01-26 | 宁波华狮智能科技有限公司 | A kind of composite 3D printer and Method of printing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112500143A (en) * | 2020-11-25 | 2021-03-16 | 西安国宏中天增材技术有限公司 | Silicon-based ceramic core slurry and application thereof |
| CN115157657A (en) * | 2021-04-06 | 2022-10-11 | 清锋（北京）科技有限公司 | 3D printing device based on photocuring and using method thereof |
| CN115157657B (en) * | 2021-04-06 | 2024-03-19 | 清锋（北京）科技有限公司 | 3D printing device based on photo-curing and application method thereof |
| WO2022222184A1 (en) * | 2021-04-21 | 2022-10-27 | 南京航空航天大学 | Dlp and fdm-based composite multi-material additive manufacturing apparatus and method |
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Application publication date: 20201027 |
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| RJ01 | Rejection of invention patent application after publication |