CN113059792A - Online variable-component photocuring 3D printing device and method - Google Patents
Online variable-component photocuring 3D printing device and method Download PDFInfo
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- CN113059792A CN113059792A CN202110332874.7A CN202110332874A CN113059792A CN 113059792 A CN113059792 A CN 113059792A CN 202110332874 A CN202110332874 A CN 202110332874A CN 113059792 A CN113059792 A CN 113059792A
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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
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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
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/214—Doctor blades
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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
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/314—Preparation
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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
- B29C64/30—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
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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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/10—Pre-treatment
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- Optics & Photonics (AREA)
Abstract
The invention relates to the technical field of 3D printing, in particular to an online variable-component photocuring 3D printing device and a method, which comprises a base and a laser generation module, an injection pump, more than two injectors, a mixing and feeding mechanism, an X-axis moving module, a scraper, a Y-axis moving module, a printing platform and a Z-axis moving module which are arranged on the base, wherein the injection pump drives the injectors to realize material conveying, a discharge port of the injectors is communicated with a mixing cavity in the mixing and feeding mechanism through a pipe body, the X-axis moving module drives the mixing and feeding mechanism to move so that the discharge port of the mixing and feeding mechanism moves to the upper part of the printing platform, the Y-axis moving module drives the scraper to move to scrape materials on the printing platform, the Z-axis moving module drives the printing platform to move up and down, and a laser printing port of the laser generation module is arranged above the printing platform, and printing of different proportions of multiple materials can be carried out.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to an online variable-component photocuring 3D printing device.
Background
3D printing, also called additive manufacturing, is a manufacturing method based on discrete accumulation thought and through material accumulation forming, the technology is designed as support with the help of computer assistance, and the manufacturing of real objects is carried out by means of digital model files, software and numerical control. As a mature 3D printing technology, the Stereo Lithography Application (SLA) has the advantages of high forming efficiency, good effect, and the like, and is rapidly developed, and has a great number of applications and potential applications in the fields of aerospace, biomedicine, mold manufacturing, automobile parts, and the like.
The photocuring forming technology is based on the liquid material forming technology, utilizes the self-leveling property of the material, and is cured layer by layer through a point line surface under the action of laser, and the curing is accumulated layer by layer until the whole printing is completed. High viscosity materials, typically liquid silicone, hydrogels, ceramic pastes, high solids resins with viscosities greater than 3000cP, have developed functionality while significantly improving the performance of the formed part, limiting the printing material and more potential applications based on traditional SLA forming.
In order to explore more possibilities of SLA, widen the use range of SLA and meet the requirements of different fields and industries, researchers at home and abroad aim to improve and innovate the traditional light curing technology so as to explore more functions of SLA.
In addition, because the traditional SLA adopts a material box for feeding, the forming technology can only realize the printing of single proportioning material, namely, the proportioning of the material can not be changed in the forming process, and the multi-material printing of partial parts is limited. The multi-material mixing technology is more suitable for industrial development due to the performance advantages, and more meets the requirements of current development and production performance, at present, multi-material photocuring forming mostly adopts a multi-material box type feeding mode, for example, the invention patent CN202010611819.7 adopts a multi-resin groove for conversion, so that the forming of various low-viscosity materials is realized, the material proportion is difficult to change in real time in the forming process, and the forming of high-viscosity multi-materials is difficult to realize. Direct Ink Writing (DIW) is a new manufacturing technology, which can control quantitative extrusion molding of slurry and transport high-viscosity materials, and has the advantages of various material types, high production flexibility, low requirements on processing environment and the like, but the molding precision is limited by the diameter of a spray head and materials, and rapid and high-precision part molding is difficult to realize.
Disclosure of Invention
The applicant aims at the defects in the prior art and provides an online variable-component photocuring 3D printing device which can print high-viscosity materials and can also print multiple materials in different proportions.
The technical scheme adopted by the invention is as follows:
the utility model provides an online become component photocuring 3D printing device, the laser generation module of installation on base and base, the injection pump, the syringe more than two, compounding feeding mechanism, X axle removes the module, the scraper, Y axle removes the module, print platform and Z axle removal module, the material transport is realized to injection pump drive syringe, the syringe discharge gate passes through body and the inside compounding chamber intercommunication of compounding feeding mechanism, X axle removes the module and drives compounding feeding mechanism and remove the discharge gate that makes compounding feeding mechanism and remove to the top of printing the platform, Y axle removes the module and drives the scraper and remove and strickle the material on the print platform, Z axle removes the module and drives print platform and reciprocate, the laser printing mouth of laser generation module is arranged in the top of printing the platform, the last mesa at manual displacement platform is installed to the laser generation module.
As a further improvement of the above technical solution:
the laser generation module comprises a laser generator, a beam expander, a vibration mirror and a field lens, one end of the beam expander is connected with a light outlet of the laser generator, the other end of the beam expander is connected with the vibration mirror, the field lens is connected with the vibration mirror, the center of the light outlet of the laser generator is coaxial with the center of the beam expander, the light inlet of the vibration mirror is coaxial with the light outlet of the beam expander, and the light outlet of the field lens faces a printing platform.
The material mixing and feeding mechanism comprises a motor I, a material mixing cavity shell, a nozzle and a material feeding screw rod, the material feeding screw rod is vertically arranged in the material mixing cavity shell, the material feeding screw rod is driven by the motor I, the lower end of the material mixing cavity shell is communicated with the nozzle, a discharge hole of the nozzle is downwards arranged, a plurality of feed inlets are formed in the side wall of the material mixing cavity shell, the number of the feed inlets of the material mixing cavity shell is the same as that of the injectors, the discharge hole of each injector is communicated with one of the feed inlets of the material mixing cavity shell through a pipe body, and an X-axis moving module drives the motor I to.
The top of base is fixed with the horizontally benchmark board through the support column, and the last face at the benchmark board is fixed to the Y axle removal module, and the Y axle removes the module and passes through horizontal installation board drive scraper and remove, and the lower face at the mounting panel is installed to the scraper, installs a plurality of fine setting screw rods on the mounting panel, and fine setting screw rod and scraper link to each other and realize the upper and lower fine setting of scraper.
The upper plate surface of the reference plate is provided with a square groove, the upper surface and the lower surface of the middle of the square groove are respectively fixed with a first limiting block and a second limiting block, the middle of the square groove is provided with a limiting hole which runs through the first limiting block and the second limiting block, and the printing platform performs limiting movement in the vertical direction along the limiting hole.
Printing platform passes through the supporting seat to be installed on manual sloping platform, and manual sloping platform passes through the mounting bracket to be installed on Z axle removes the module, and Z axle removes the module and drives manual sloping platform and reciprocate.
The bottom of the square groove is provided with a square hole, a roller is installed in the square hole and driven by a motor II, a brush used for cleaning a scraper is covered on the outer surface of the roller, the roller is arranged on one side of a limiting block I, the central line of the roller is parallel to the length direction of a cutting edge of the scraper, and the central line of the roller is perpendicular to the moving direction of the scraper.
The laser generator is installed on the upper table surface of the manual displacement table, and the manual displacement table is installed above the base through the supporting frame.
The applicant aims at the defects in the prior art and provides an online variable-component photocuring 3D printing method, which can realize printing of high-viscosity materials and can also perform printing of various materials in different proportions.
The technical scheme adopted by the invention is as follows: an online variable-component photocuring 3D printing method comprises the following steps:
presetting the parameter proportion of two or more materials required by each layer of printing according to the manufacturing requirement;
adjusting the height of the printing platform, leveling the printing platform, adjusting the height of the scraper, and leveling the scraper;
different materials are conveyed through the feeding device and enter a material mixing cavity of the material mixing and feeding mechanism through the feeding hole, and the material mixing and feeding mechanism utilizes a first motor to drive a feeding screw rod to realize uniform mixing and conveying of the materials;
the material mixing and feeding mechanism conveys materials in an ink direct writing mode, the material mixing and feeding mechanism is driven to move above the printing platform through the X-axis moving module, and the mixed materials are extruded to the printing platform through a discharge port of a nozzle in the material mixing and feeding mechanism;
the Y-axis moving module drives the scraper to move to spread the material on the printing platform in a flow casting manner, so that the material is fully paved in the whole printing area;
the laser generation module carries out laser scanning to solidify the material in the printing area and simultaneously carries out cleaning treatment on the scraper;
the printing platform descends by the thickness of the single-layer slice, and the scraper resets;
and repeating the operation until the whole part is completely processed, lifting the printing platform, and taking out the printed part.
As a further improvement of the above technical solution:
the viscosity range of the mixed different materials in the mixing cavity is 500-10000cps, the thickness range of a single-layer slice of the printing platform descending is 50-200 μm, the light intensity range of the laser generation module is 0-800mW, and the moving speed range of the scraper is 0.5-5 mm/s.
The invention has the following beneficial effects: according to the invention, a DIW mode is adopted to convey high-viscosity materials, the Y-axis moving module is used for driving the scraper to move to spread the materials, the printing of the high-viscosity materials can be realized, the usable material range is widened, the injection pump is used for controlling a plurality of injectors to feed materials, different materials can be stored in each injector, the plurality of injectors feed materials into the mixing cavity of the mixing and feeding mechanism, the mixing of two or more different materials can be realized, the mixing proportion is controlled on line, the defect that only single material printing can be performed in the prior art is overcome, and the gradient part printing can be realized by adjusting and controlling on line according to actual needs.
Drawings
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a partial structural view of fig. 1.
Fig. 3 is a view from another angle of fig. 2.
Fig. 4 is a view showing an installation structure of the reference plate of the present invention.
Wherein: 1. a laser generator; 2. a beam expander; 3. a galvanometer; 4. a field lens; 10. a base; 11. a reference plate; 12. a square groove; 13. a first limiting block; 14. a second limiting block; 15. a limiting hole; 20. an injection pump; 30. an injector; 40. a material mixing and feeding mechanism; 41. a first motor; 42. a mixing chamber housing; 43. a nozzle; 44. a feed inlet; 50. an X-axis moving module; 60. a scraper; 61. mounting a plate; 62. fine adjustment of the screw rod; 70. a Y-axis moving module; 80. a printing platform; 90. a Z-axis moving module; 100. a supporting seat; 110. a manual tilting table; 120. a drum; 130. a manual displacement table; 140. a support frame.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-4, the online variable-component photocuring 3D printing apparatus of this embodiment includes a base 10 and a laser generation module installed on the base 10, an injection pump 20, two or more injectors 30, a mixing and feeding mechanism 40, an X-axis moving module 50, a scraper 60, a Y-axis moving module 70, a printing platform 80 and a Z-axis moving module 90, wherein the injection pump 20 drives the injectors 30 to realize material transportation, a discharge port of the injectors 30 is communicated with a mixing cavity inside the mixing and feeding mechanism 40 through a pipe body, the X-axis moving module 50 drives the mixing and feeding mechanism 40 to move so that the discharge port of the mixing and feeding mechanism 40 moves to a position above the printing platform 80, the Y-axis moving module 70 drives the scraper 60 to move to scrape materials on the printing platform 80, the Z-axis moving module 90 drives the printing platform 80 to move up and down, a laser printing port of the laser generation module is arranged above the printing platform, the laser generating module is mounted on the upper table of the manual displacement table 130. The X-axis moving module 50, the Y-axis moving module 70, and the Z-axis moving module 90 may be linear modules or other modules capable of moving linearly.
The laser generation module comprises a laser generator 1, a beam expander 2, a vibration mirror 3 and a field lens 4, one end of the beam expander 2 is connected with a light outlet of the laser generator 1, the other end of the beam expander 2 is connected with the vibration mirror 3, the field lens 4 is connected with the vibration mirror 3, the center of the light outlet of the laser generator 1 is coaxial with the center of the beam expander 2, the light inlet of the vibration mirror 3 is coaxial with the light outlet of the beam expander 2, and the light outlet of the field lens 4 faces the printing platform 80.
The material mixing and feeding mechanism 40 comprises a first motor 41, a material mixing cavity shell 42, a nozzle 43 and a feeding screw rod, the feeding screw rod is vertically arranged in the material mixing cavity shell 42 and driven by the first motor 41, the lower end of the material mixing cavity shell 42 is communicated with the nozzle 43, a discharge hole of the nozzle 43 is arranged downwards, a plurality of feed holes 44 are formed in the side wall of the material mixing cavity shell 42, the number of the feed holes 44 of the material mixing cavity shell 42 is the same as that of the injectors 30, the discharge hole of each injector 30 is communicated with one of the feed holes 44 of the material mixing cavity shell 42 through a pipe body, and the X-axis moving module 50 drives the first motor 41 to horizontally move in the X-axis. The feeding screw can uniformly stir the material in the mixing cavity shell 42 and then output the material from the discharge hole of the nozzle 43.
The horizontal reference plate 11 is fixed with through the support column in the top of base 10, and Y axle removes module 70 and fixes the last face at reference plate 11, and Y axle removes module 70 and drives scraper 60 through horizontal mounting plate 61 and removes, and scraper 60 installs the lower face at mounting plate 61, installs a plurality of fine setting screw rods 62 on the mounting plate 61, and fine setting screw rod 62 links to each other with scraper 60 and realizes that scraper 60 can finely tune from top to bottom. The fine adjustment screw 62 is used to level the scraper 60.
The upper plate surface of the reference plate 11 is provided with a square groove 12, the upper surface and the lower surface of the middle part of the square groove 12 are respectively fixed with a first limiting block 13 and a second limiting block 14, the middle part of the square groove 12 is provided with a limiting hole 15 which runs through the first limiting block 13 and the second limiting block 14, and the printing platform 80 performs limiting movement in the vertical direction along the limiting hole 15. In order to prevent material leakage, the periphery of the printing platform 80 can be sleeved with a sealing ring, and when the printing platform 80 moves up and down along the limiting hole 15, the printing platform 80 forms dynamic seal between the sealing ring and the inner wall of the limiting hole 15.
The printing platform 80 is installed on the manual tilting table 110 through the supporting seat 100, the manual tilting table 110 is installed on the Z-axis moving module 90 through the mounting frame, and the Z-axis moving module 90 drives the manual tilting table 110 to move up and down. The printing platform 80 is driven to move up and down by the Z-axis moving module 90, so that multi-layer and multi-gradient printing is realized. Manual tilt table 110 is used to level printing platform 80.
The bottom of the square groove 12 is provided with a square hole, a roller 120 is installed in the square hole, the roller 120 is driven by a second motor, the outer surface of the roller 120 is covered with a brush for cleaning the scraper 60, the roller 120 is arranged on one side of the first limiting block 13, the central line of the roller 120 is parallel to the length direction of the cutting edge of the scraper 60, and the central line of the roller 120 is perpendicular to the moving direction of the scraper 60. The brush on the roller 120 can sweep away the residual material on the scraper 60, so as to ensure the cleanness of the scraper 60 and ensure that the subsequent scraper 60 can smoothly scrape the material.
The laser generator 1 is installed on the upper table of the manual displacement table 130, and the manual displacement table 130 is installed above the base 10 through the supporting frame 140. The manual displacement table 130 may adjust the height of the laser generator 1.
The online variable-component photocuring 3D printing method comprises the following steps of:
presetting the parameter proportion of two or more materials required by each layer of printing according to the manufacturing requirement;
adjusting the height of the printing platform 80, leveling the printing platform 80, adjusting the height of the scraper 60, and leveling the scraper 60;
different materials are conveyed through a feeding device and enter a material mixing cavity of a material mixing and feeding mechanism 40 through a feeding hole, and the material mixing and feeding mechanism 40 utilizes a first motor 41 to drive a feeding screw rod to realize uniform mixing and conveying of the materials; wherein the feeding device can control the extrusion feeding of a plurality of injectors 30 by using the injection pump 20.
The material mixing and feeding mechanism 40 conveys materials in an ink direct writing mode, the material mixing and feeding mechanism 40 is driven to move to the upper part of the printing platform 80 through the X-axis moving module 50, and the mixed materials are extruded to the printing platform 80 through a discharge hole of a nozzle 43 in the material mixing and feeding mechanism 40;
the Y-axis moving module 70 drives the scraper 60 to move to spread the material on the printing platform 80 by casting, so that the material is fully spread in the whole printing area;
the laser generation module carries out laser scanning to solidify the material in the printing area and simultaneously carries out cleaning treatment on the scraper 60;
the printing platform 80 lowers the thickness of the single-layer slice, and the scraper 60 resets;
the above operations are repeated until the entire part is completely processed, the printing platform 80 is lifted, and the printed part is taken out.
The viscosity range of the mixed different materials in the mixing cavity is 500-10000cps, the thickness range of the single-layer slice of the printing platform 80 falling is 50-200 μm, the light intensity range of the laser generation module is 0-800mW, and the moving speed range of the scraper 60 is 0.5-5 mm/s.
According to the invention, the DIW mode is adopted to convey the high-viscosity material, the Y-axis moving module 70 is utilized to drive the scraper 60 to move to spread the material, the printing of the high-viscosity material can be realized, the usable material range is widened, the injection pump 20 is utilized to control the plurality of injectors 30 to feed the material, different materials can be stored in each injector 30, the plurality of injectors 30 feed the material into the mixing cavity of the mixing and feeding mechanism 40, the mixing of two or more different materials can be realized, the mixing proportion is controlled on line, the defect that only single material printing can be carried out in the prior art is overcome, and the online regulation and control can be carried out according to the actual requirement, so that the printing of the gradient part is.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (10)
1. The utility model provides an online become component photocuring 3D printing device which characterized in that: comprises a base (10), a laser generation module arranged on the base (10), an injection pump (20), more than two injectors (30), a mixing and feeding mechanism (40), an X-axis moving module (50), a scraper (60), a Y-axis moving module (70), a printing platform (80) and a Z-axis moving module (90), wherein the injection pump (20) drives the injectors (30) to realize material conveying, a discharge port of the injector (30) is communicated with a mixing cavity inside the mixing and feeding mechanism (40) through a pipe body, the X-axis moving module (50) drives the mixing and feeding mechanism (40) to move so that the discharge port of the mixing and feeding mechanism (40) moves to the upper part of the printing platform (80), the Y-axis moving module (70) drives the scraper (60) to move to scrape materials on the printing platform (80), and the Z-axis moving module (90) drives the printing platform (80) to move up and down, the laser printing port of the laser generation module is arranged above the printing platform (80), and the laser generation module is arranged on the upper table surface of the manual displacement table (130).
2. The on-line variable composition photocuring 3D printing device of claim 1, wherein: laser generation module includes laser generator (1), beam expanding lens (2), shakes mirror (3) and field lens (4), the one end of beam expanding lens (2) and the light-emitting mouth of laser generator (1) link to each other, the other end of beam expanding lens (2) with shake mirror (3) and link to each other, field lens (4) with shake mirror (3) and link to each other, the light-emitting mouth center of laser generator (1) is coaxial with beam expanding lens (2) center, it is coaxial with beam expanding lens (2) light-emitting mouth to shake mirror (3) income light-emitting mouth, the light-emitting mouth of field lens (4) is towards print platform (80).
3. The on-line variable composition photocuring 3D printing device of claim 2, wherein: the mixing and feeding mechanism (40) comprises a first motor (41), a mixing cavity shell (42), a nozzle (43) and a feeding screw rod, the feeding screw rod is vertically arranged in the mixing cavity shell (42), the feeding screw rod is driven by the first motor (41), the lower end of the mixing cavity shell (42) is communicated with the nozzle (43), a discharge hole of the nozzle (43) is arranged downwards, a plurality of feed holes (44) are formed in the side wall of the mixing cavity shell (42), the number of the feed holes (44) of the mixing cavity shell (42) is the same as that of the injectors (30), the discharge hole of each injector (30) is communicated with one feed hole (44) of the mixing cavity shell (42) through a pipe body, and an X-axis moving module (50) drives the first motor (41) to horizontally move in the X-axis direction.
4. The on-line variable composition photocuring 3D printing device of claim 3, wherein: the top of base (10) is fixed with horizontally benchmark board (11) through the support column, and the last face in benchmark board (11) is fixed in Y axle removal module (70), and Y axle removal module (70) drive scraper (60) through horizontal mounting board (61) and remove, and the lower face at mounting panel (61) is installed in scraper (60), installs a plurality of fine setting screw rods (62) on mounting panel (61), and fine setting screw rod (62) and scraper (60) link to each other and realize the upper and lower fine setting of scraper (60).
5. The on-line variable composition photocuring 3D printing device of claim 4, wherein: the upper plate surface of the reference plate (11) is provided with a square groove (12), the upper surface and the lower surface of the middle of the square groove (12) are respectively fixed with a first limiting block (13) and a second limiting block (14), the middle of the square groove (12) is provided with a limiting hole (15) which penetrates through the first limiting block (13) and the second limiting block (14), and the printing platform (80) moves in a limiting mode in the vertical direction along the limiting hole (15).
6. The on-line variable composition photocuring 3D printing device of claim 5, wherein: printing platform (80) are installed on manual sloping platform (110) through supporting seat (100), and manual sloping platform (110) are installed on Z axle removes module (90) through the mounting bracket, and Z axle removes module (90) and drives manual sloping platform (110) and reciprocate.
7. The on-line variable composition photocuring 3D printing device of claim 5, wherein: the cleaning device is characterized in that a square hole is formed in the bottom of the square groove (12), a roller (120) is installed in the square hole, the roller (120) is driven by a second motor, a brush used for cleaning the scraper (60) covers the outer surface of the roller (120), the roller (120) is arranged on one side of the first limiting block (13), the center line of the roller (120) is parallel to the length direction of the cutting edge of the scraper (60), and the center line of the roller (120) is perpendicular to the moving direction of the scraper (60).
8. The on-line variable composition photocuring 3D printing device of claim 2, wherein: the laser generator (1) is arranged on the upper table top of the manual displacement table (130), and the manual displacement table (130) is arranged above the base (10) through a support frame (140).
9. An online variable-component photocuring 3D printing method comprises the following steps:
presetting the parameter proportion of two or more materials required by each layer of printing according to the manufacturing requirement;
adjusting the height of the printing platform (80), leveling the printing platform (80), adjusting the height of the scraper (60), and leveling the scraper (60);
different materials are conveyed through a feeding device and enter a material mixing cavity of a material mixing and feeding mechanism (40) through a feeding hole (44), and a feeding screw rod is driven by a motor I (41) in the material mixing and feeding mechanism (40) to realize uniform mixing and conveying of the materials;
the material mixing and feeding mechanism (40) conveys materials in an ink direct writing mode, the X-axis moving module (50) drives the material mixing and feeding mechanism (40) to move to the position above the printing platform (80), and the mixed materials are extruded out of a discharge hole of a nozzle (43) in the material mixing and feeding mechanism (40) to the printing platform (80);
the Y-axis moving module (70) drives the scraper (60) to move to spread the material on the printing platform (80) in a casting manner, so that the material is fully paved in the whole printing area;
the laser generation module carries out laser scanning to solidify the material in the printing area and simultaneously carries out cleaning treatment on the scraper (60);
the printing platform (80) reduces the thickness of the single-layer slice, and the scraper (60) resets;
and repeating the operation until the whole part is completely processed, lifting the printing platform (80), and taking out the printed part.
10. The on-line variable composition photocuring 3D printing method of claim 9, wherein: the viscosity range of the mixed different materials in the mixing cavity is 500-10000cps, the thickness range of a single-layer slice of the printing platform (80) descending is 50-200 mu m, the light intensity range of the laser generation module is 0-800mW, and the moving speed range of the scraper (60) is 0.5-5 mm/s.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110332874.7A CN113059792A (en) | 2021-03-29 | 2021-03-29 | Online variable-component photocuring 3D printing device and method |
| PCT/CN2021/086822 WO2022205501A1 (en) | 2021-03-29 | 2021-04-13 | Online variable component photocuring 3d printing device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116178004A (en) * | 2022-12-13 | 2023-05-30 | 中国科学院上海硅酸盐研究所 | Rare earth gradual change doped transparent ceramic and preparation method thereof |
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| WO2022205501A1 (en) | 2022-10-06 |
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