CN109466061B - Multi-material 3D printing equipment based on electro-hydraulic power coupling jet printing - Google Patents
Multi-material 3D printing equipment based on electro-hydraulic power coupling jet printing Download PDFInfo
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- CN109466061B CN109466061B CN201811351598.3A CN201811351598A CN109466061B CN 109466061 B CN109466061 B CN 109466061B CN 201811351598 A CN201811351598 A CN 201811351598A CN 109466061 B CN109466061 B CN 109466061B
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of 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
- B29C64/10—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
- B29C64/112—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
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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
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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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Abstract
A multi-material 3D printing device based on electro-hydraulic power coupling jet printing belongs to the technical field of 3D printing and comprises a mobile platform module, a workbench, a spray head module, an injection pump module, a roller module and a control module; the material printed by the spray head module can be a combination of various materials; the leveling of the liquid level of the printing material can be controlled through the roller module, and the thickness of each printing layer can be controlled through the combination of the movement of the roller module and the movement of the moving platform module; the control module controls the spray head module, the mobile platform and the relay switch to realize the switching of the printing materials. The invention can realize the printing of various materials, has high switching speed of different printing materials, and has cheap manufacturing cost of the spray head module, thus being beneficial to reducing the cost of the whole machine.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to multi-material 3D printing equipment based on electro-hydraulic power coupling jet printing.
Background
The 3D printer can be divided into a Fused Deposition Manufacturing (FDM) model, a three-dimensional light curing (S L A) model, a digital light curing (D L P) model and the like according to different molding technologies, wherein the molding precision and quality of the D L P printer are the same as those of the S L A printer, the molding precision of the D L P printer is far higher than those of the S L A printer, the D L A printer is generally point-to-line and line-to-surface during molding, and the D L P printer is molded layer by layer, so the D L P printer is faster than the S L A molding technology.
With the advent of certain 3D printing technologies, such as color parts, biological models, multifunctional circuit boards, micro-transmitters, organizers and the like, multi-material 3D printing technologies related to photocuring mainly comprise a porous micro-sprayer for spraying photosensitive resin and a printing technology combining ultraviolet curing, a rotatable solution tank and a three-dimensional photocuring technology (S L A) combined with a printing technology (R.Wicker, F.Medina, C.Elkins, Engineering [ J ],2013,754 and su-once-through-material 764, J.201oi, H.Kim, R.Wicker, Journal of processing technology [ J ] 318, 2011 and su-once-through-material, J.20199, H.Kim, R.W. Wicker, Journal of processing technology [ J ] and a movable micro-jet-nozzle, a printing technology series of micro-jet printing technology [ J ] and a printing technology series of micro-jet printer, wherein the printing technology is mainly required by a series of a high-speed printing technology, high-speed printing technology (R.W.W.S.W.W.T.T.7, J.A) combined with a printing technology (R.W.W.W.W.W.R.W.W.W.W.W.W.W.W.A) and a printing technology, W.R.R.W.W.A.W.A.A.A. A. related to photocuring technology, C.A. A. cause the printing technology, a series of a printing technology, a printing technology.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides multi-material 3D printing equipment based on electro-hydraulic-dynamic coupling spray printing, has the advantages of low manufacturing cost, simple and flexible process, no need of mask and photoetching, capability of realizing high-viscosity solution spray printing and the like, and is suitable for manufacturing microstructures of metal nanoparticles, ceramic materials and organic functional materials.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-material 3D printing device based on electro-hydraulic power coupling jet printing comprises a rack, a mobile platform module, a workbench, a spray head module, an injection pump module, a roller module, a direct-current high-voltage power supply and a control module; the movable platform module is arranged on a base plate of the frame and is fixedly connected with a workbench to drive the workbench to move; the spray head module is arranged above the workbench and connected with the injection pump module through a hose, and a needle head of the spray head module is connected with a direct-current high-voltage power supply so as to spray a printing material on the workbench; the roller module is arranged above the workbench and used for flatly pressing the printing material on the workbench; the control module is respectively connected with the mobile platform module, the roller module and the direct-current high-voltage power supply so as to control the power supply of the spray head module to start and stop, the movement of the mobile platform module and the rotating speed of the roller module.
The movable platform module is provided with an X-axis sliding table, a Y-axis sliding table and a Z-axis lifting table, the bottom of a guide rail of the X-axis sliding table is fixed on the surface of a base plate of the rack, the bottom of a guide rail of the Y-axis sliding table is fixed on a movable seat of the X-axis sliding table, the Z-axis lifting table is fixed on a movable seat of the Y-axis sliding table, and the workbench is arranged on the Z-axis lifting table.
The injection pump module comprises a stepping motor lead screw sliding table, an injector and an injection pump propelling block; the step motor lead screw sliding table is fixed on the frame, a piston of the injector is connected with the step motor lead screw sliding table through an injection pump propelling block, a needle head of the injector is connected with the spray head module through a hose, and the liquid supply amount of the spray head can be controlled through the motor rotating speed of the step motor lead screw sliding table.
The injection pump module further comprises an injector base and an injector compact block; one end of the injector base is fixedly connected with the bottom of the screw rod sliding table of the stepping motor, a containing groove with an outward opening is formed in the injector base, the injector is arranged in the containing groove, and the injector pressing block covers the opening of the containing groove and is connected with the injector base.
The sprayer module is a liftable sprayer module, the sprayer module is provided with a plurality of sprayers, and the number of the sprayers can be selected according to actual needs so as to be used for printing various materials; the material for the head printing may be various materials such as various combinations of photo-curing resin (curing wavelength 405nm), polymer solution (polyethylene oxide, polyimide, polyvinyl alcohol), liquid metal, and metal nanoparticle ink (nano silver ink).
The spray head module comprises a dispensing needle head, a needle head fixing pipe, a pneumatic quick plugging joint, a pipe fixing seat and a lifting platform; the point is glued syringe needle and is connected and compress tightly the one end at the fixed pipe of syringe needle with direct current high voltage power supply, and the other termination of the fixed pipe of syringe needle has pneumatic quick plug and pull-in connector, and the fixed pipe rigid coupling of syringe needle compresses tightly through the screw on the pipe fixing base, and the pipe fixing base is fixed on the elevating platform, through adjusting the jet distance of elevating platform in order to adjust the shower nozzle.
The roller module comprises a roller supporting seat, a roller and a motor; the roller supporting seat is fixed on a cross beam of the rack through a fixing plate, the lowest position of the cylindrical surface of the roller is flush with the Z-axis lifting table when the Z-axis lifting table is located at the highest position, and the roller is rigidly connected with the motor so as to control the rotating speed of the roller by controlling the rotating speed of the motor. The roller module can control the leveling of the liquid level of the printing material, and the movement of the roller module and the moving platform module is combined to control the thickness of each printing layer.
The invention also comprises an exposure module and a CCD real-time observation system.
The exposure module is provided with a D L P exposure machine and a D L P lifting manipulator, the D L P lifting manipulator is fixedly connected to a cross beam of the rack, and the D L P exposure machine is arranged on the D L P lifting manipulator so that the D L P exposure machine can move up and down.
The CCD real-time observation system is arranged on the frame and comprises an industrial CCD, an industrial telephoto lens, a manual sliding table, a manual inclination table and a manual rotating platform, and the visual field and the focal length of the CCD real-time observation system are adjusted by adjusting the manual sliding table, the manual inclination table and the manual rotating platform so as to observe a printing material on the workbench.
The workbench comprises a workbench upper plate and a workbench lower plate, screw counter bores are formed in the workbench lower plate and are fixed with the Z-axis lifting table in a screw fixing mode, the workbench upper plate is horizontally placed on the surface of the workbench lower plate and is fixed through screws, screw heads of the screws face downwards, and tail portions of the screws are not higher than the upper surface of the workbench upper plate.
The control module comprises a display device, an industrial personal computer, a motion control card and a relay switch; the industrial personal computer is provided with operating software for controlling the printing equipment, is connected with the display device and controls the motion control card, the relay switch, the exposure module and the direct-current high-voltage power supply; the motion control card is used for controlling the motion of the mobile platform module, the stepping motor screw rod sliding table and the roller module; the relay switch controls the power supply of the spray head module to be started and stopped.
The direct-current high-voltage power supply is a programmable control direct-current high-voltage power supply, and the output voltage range of the direct-current high-voltage power supply is-25 kV- +25kV
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the invention adopts an electro-hydraulic dynamic coupling spray printing (EHD) technology, realizes spray printing preparation of a micro-nano structure by utilizing an electric field to induce a solution to deform at a nozzle to form a cone-jet mode, is a novel method for manufacturing the micro-nano structure and a device, has the advantages of low manufacturing cost, simple and flexible process, no need of a mask and photoetching, capability of realizing spray printing of high-viscosity solution and the like, is suitable for manufacturing microstructures of metal nano particles, ceramic materials and organic functional materials, does not contain a heating unit, and is particularly suitable for patterned spray printing of biological materials.
2. The invention adopts the electro-hydraulic power coupling spray printing mode to supply liquid, the range of printable materials is wide (the printing materials can be various light-cured resins, polymer solutions, liquid metal and metal ink), the injection pump module is a simple injection pump, and the quick switching of different printing materials can be realized by controlling the liquid supply start and stop of the injection pump module, the lifting of the spray head module and the movement of the mobile platform module.
3. The multi-nozzle sprayer is low in manufacturing cost, beneficial to reducing the cost of the whole machine and reasonable in structural design.
4. According to the invention, the control module controls the spray head module, the mobile platform module and the relay switch to realize the rapid switching of the printing materials.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of the present invention without a control module and a DC high voltage power supply;
FIG. 3 is a schematic diagram of a second three-dimensional structure of the present invention without a control module and a DC high voltage power supply;
FIG. 4 is an exploded view of the structure of the work bench;
FIG. 5 is a schematic diagram of the construction of a syringe pump module and a spray head module;
FIG. 6 is a schematic structural view of a drum module;
FIG. 7 is a schematic illustration of a multi-material device printed in an embodiment;
fig. 8 is a waveform diagram of a pulse voltage applied by the photosensitive resin printing in the embodiment.
The reference numerals of the device are that a rack 1, a workbench 2, a mobile platform module 3, a spray head module 4, an injection pump module 5, a roller module 6, a direct-current high-voltage power supply 7, a control module 8, an exposure module 9, a CCD real-time observation system 10, a workbench upper plate 21, a workbench lower plate 22, screws 23, an X-axis sliding table 31, a Y-axis sliding table 32, a Z-axis lifting table 33, a dispensing needle 41, a needle fixing tube 42, a tube fixing seat 43, a pneumatic quick plugging and unplugging joint 44, a manual lifting table 45, a stepping motor screw sliding table 51, an injector 52, an injection pump propelling block 53, an injector base 54, an injector compacting block 55, a hose 56, a roller supporting seat 61, a roller 62, a motor 63, a display device 81, an industrial personal computer 82, a motion control card 83, a relay switch 84, a D L P exposure machine 91, a D L P lifting manipulator 92, an industrial CCD101, an industrial telephoto lens 102, a manual sliding table 103, a.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 3, the present invention includes a frame 1, a workbench 2, a mobile platform module 3, a nozzle module 4, an injection pump module 5, a roller module 6, a dc high voltage power supply 7, a control module 8, an exposure module 9, and a CCD real-time observation system 10.
The movable platform module 3 is arranged on the base plate of the frame 1, and the movable platform module 3 is fixedly connected with the workbench 2 to drive the workbench 2 to move; the spray head module 4 is arranged above the workbench 2, the spray head module 4 is connected with the injection pump module 5 through a hose 56, and a dispensing needle 41 of the spray head module 4 is connected with a direct-current high-voltage power supply 7 so as to spray a printing material on the workbench 2; the roller module 6 is arranged above the workbench 2, and the roller module 6 is used for flattening the liquid level of the printing material on the workbench 2; the control module 8 is respectively connected with the mobile platform module 3, the roller module 6 and the direct-current high-voltage power supply 7 so as to control the power supply start and stop of the spray head module 4, the movement of the mobile platform module 3 and the rotating speed of the roller module 6.
The moving platform module 3 is provided with an X-axis sliding table 31, a Y-axis sliding table 32 and a Z-axis lifting table 33, the bottom of a guide rail of the X-axis sliding table 31 is fixed on the surface of a base plate of the frame 1, the bottom of a guide rail of the Y-axis sliding table 32 is fixed on a moving seat of the X-axis sliding table 31, the Z-axis lifting table 33 is fixed on a moving seat of the Y-axis sliding table 32, and the workbench 2 is arranged on the Z-axis lifting table 33.
As shown in fig. 4, the workbench 2 includes a workbench upper plate 21 and a workbench lower plate 22, the workbench lower plate 22 is provided with screw counter bores and is fixed with the Z-axis lifting table 33 by means of screws 23, the workbench upper plate 21 is flatly placed on the surface of the workbench lower plate 22 and is fixed by the screws 23, the heads of the screws 23 face downwards, and the tails of the screws 23 are not higher than the upper surface of the workbench upper plate 21.
As shown in fig. 1, 2 and 5, the syringe pump module 5 includes a stepping motor screw rod sliding table 51, a syringe 52, a syringe pump pushing block 53, a syringe base 54, a syringe pressing block 55 and a hose 56; the stepping motor screw rod sliding table 51 is fixed on the frame 1, a piston of the injector 52 is connected with the stepping motor screw rod sliding table 51 through an injection pump propelling block 53, a needle head of the injector 52 is connected with the spray head module 4 through a hose 56, and the liquid supply amount of the spray head can be controlled through the rotating speed of a motor 63 of the stepping motor screw rod sliding table 51; one end of the injector base 54 is fixedly connected with the bottom of the stepping motor screw rod sliding table 51, a containing groove with an outward opening is arranged on the injector base 54, the injector 52 is arranged in the containing groove, and the injector pressing block 55 covers the opening of the containing groove and is connected with the injector base 54. The materials of the injector 52, the injection pump pushing block 53, the injector base 54 and the injector pressing block 55 are all PMMA, so the manufacturing cost is low.
The shower nozzle module 4 is the shower nozzle module of liftable, and shower nozzle module 4 is equipped with a plurality of shower nozzles, and this embodiment adopts 4 shower nozzles, and is corresponding, is equipped with 4 syringe pump modules 5.
As shown in fig. 1, 2 and 5, the nozzle module 4 includes a dispensing needle 41, a needle fixing tube 42, a pneumatic quick plug connector 44, a tube fixing seat 43 and a manual lifting platform 45; the dispensing needle 41 is connected with the direct-current high-voltage power supply 7 and is pressed at one end of the needle fixing tube 42, the other end of the needle fixing tube 42 is connected with the pneumatic quick plugging connector 44, the needle fixing tube 42 is fixedly connected to the tube fixing seat 43 and is pressed through the screw 23, the tube fixing seat 43 is fixed on the manual lifting platform 45, and the spraying distance of the spray head is adjusted by adjusting the manual lifting platform 45.
As shown in fig. 2 and 6, the drum module 6 includes a drum support base 61, a drum 62, and a motor 63; the roller supporting seat 61 is fixed on a beam of the frame 1 through a fixing plate, the lowest position of the cylindrical surface of the roller 62 is flush with the highest position of the Z-axis lifting table 33, and the roller 62 is rigidly connected with the motor 63 so as to control the rotating speed of the roller 62 by controlling the rotating speed of the motor 63. The roller module 6 can control the leveling of the liquid level of the printing material, and the movement of the roller module 6 and the moving platform module 3 is combined to control the thickness of each printing layer.
As shown in FIG. 1, the exposure module 9 is mounted on the frame 1 and located right above the roller 62, the exposure module 9 is provided with a D L P exposure machine 91 and a D L P lifting manipulator 92, the D L P lifting manipulator 92 is fixedly connected to a beam of the frame 1, the D L P exposure machine 91 is arranged on the D L P lifting manipulator 92 so that the D L P exposure machine 91 can move up and down to control the exposure distance, in the embodiment, a pro4500 optical machine is adopted by the optical machine
As shown in fig. 1-2, the CCD real-time observing system 10 is disposed on the frame 1, the CCD real-time observing system 10 includes an industrial CCD101, an industrial telephoto lens 102, a manual sliding table 103, a manual inclination table 104, and a manual rotating platform 105, and the field of view and the focal length of the CCD real-time observing system 10 are adjusted by adjusting the manual sliding table 103, the manual inclination table 104, and the manual rotating platform 105 to observe the printing material on the working table 2.
As shown in fig. 1, the control module 8 includes a display device 81, an industrial personal computer 82, a motion control card 83 and a relay switch 84; the industrial personal computer 82 is provided with operation software for controlling the printing equipment, and the industrial personal computer 82 is connected with the display device 81 and controls the motion control card 83, the relay switch 84, the exposure module 9 and the direct-current high-voltage power supply 7; the motion control card 83 is used for controlling the motion of the mobile platform module 3, the stepping motor screw rod sliding table 51 and the roller module 6; the relay switch 84 controls the power on/off of the spray head module 4.
Taking the multi-material device shown in fig. 7 as an example, the device printing steps of the present invention are given below:
1. preparation before printing. Importing a 3-dimensional model of the multi-material device into printing operation software and forming a processing code; referring to fig. 1, the specification of a syringe is selected to be 5ml, the syringe is sequentially filled with a photosensitive resin solution (with a curing wavelength of 405nm), a polyvinylidene fluoride (PVDF) solution (with a solvent of dimethyl sulfoxide (DMSO) and a solute mass fraction of 12%), a liquid metal, a polyethylene oxide (PEO) solution (with a solvent of water and alcohol and a solute mass fraction of 2%), the types of dispensing needles are sequentially 20G (with an inner diameter of 0.6mm), 25G (with an inner diameter of 0.26mm) and 25G (with an inner diameter of 0.26mm) from left to right, and the numbers of the dispensing needles are sequentially a, b, c and d from left; lifting the Z-axis lifting platform to the highest position, and then descending 20 mu m (after that, descending 20 mu m for each layer of the Z-axis lifting platform is printed); setting the parameters of a sprayer, setting the thickness of a printed layer to be 20 microns, adjusting the distance from a dispensing needle head a to a workbench to be 1mm, setting the working voltage of the dispensing needle head a to be positive and negative pulse voltage +/-1 kV (voltage waveform is shown in figure 8) and a relay switch connected with the same to be K1, adjusting the distance from a dispensing needle head b to the workbench to be 8cm, setting the working voltage of the dispensing needle head b to be 10kV and a relay switch connected with the same to be K2, adjusting the distance from a dispensing needle head c to the workbench to be 1mm, setting the working voltage of the dispensing needle head c to be 1kV and a relay switch connected with the same to be K3, adjusting the distance from a dispensing needle head d to the workbench to be 3cm, setting the working voltage of the dispensing needle head d to be 4kV and a relay switch connected with the same to be K4; setting parameters of the injection pump modules, wherein the serial numbers of the injection pump modules from left to right are M1, M2, M3 and M4 in sequence, and the liquid supply rates of the injection pump modules are 500 mul/h, 200 mul/h, 50 mul/h and 100 mul/h in sequence; setting the rotating speed of the roller to be 100 r/min;
2. the mechanical movement of the printing of the multi-material device according to the generated machining code is as follows: (1) printing a first layer, material photosensitive resin: the workbench moves from the initial position to the printing position of the dispensing needle head a (the X-axis sliding table and the Y-axis sliding table move, and the Z-axis lifting table is kept still in the process), and K1 and M1 are opened; the workbench moves according to a set path and time, and a layer of smooth resin liquid is paved on the workbench at the moment; closing K1 and M1, moving the workbench to an exposure station and triggering an exposure switch (in the process, the Z-axis lifting platform is kept still), and in the moving process, passing below the roller, the rotating roller rolls the liquid level of the resin and controls the thickness of the liquid layer of the resin; after exposure is finished, the Z-axis lifting table moves downwards by 20 microns, and the printing of the first layer is finished; (2) printing a second layer, material nanofibers: the workbench moves to the printing position of the dispensing needle head b (the X-axis sliding table and the Y-axis sliding table move, and the Z-axis lifting table is kept still in the process), and K2 and M2 are opened; the workbench moves according to a set path and time, and a layer of PVDF nano-fiber is laid on the workbench at the moment; closing K2 and M2, moving the Z-axis lifting platform downwards by 20 microns, and finishing the printing of the second layer; (3) printing a third layer, material photosensitive resin: the steps are the same as the first layer of material printing; (4) printing a fourth layer, material photosensitive resin and liquid metal: the workbench moves to the printing position of a dispensing needle c (the X-axis sliding table and the Y-axis sliding table move, and the Z-axis lifting table is kept still in the process), and K3 and M3 are opened; the workbench moves according to a set path and time, and a layer of liquid metal pattern is laid on the workbench at the moment; closing K3 and M3, opening K1 and M1, moving the workbench according to a set path and time, and paving a layer of smooth resin liquid on the workbench; closing K1 and M1, moving the workbench to an exposure station and triggering an exposure switch (in the process, the Z-axis lifting platform is kept still), and in the moving process, passing below the roller, the rotating roller rolls the liquid level of the resin and controls the thickness of the liquid layer of the resin; after exposure is finished, the Z-axis lifting table moves downwards by 20 microns, and printing of the fourth layer is finished; (5) printing the fifth layer, material photosensitive resin and atomized particles: moving to the printing position of a dispensing needle c (the X-axis sliding table and the Y-axis sliding table move, and the Z-axis lifting table remains in the process), and opening K4 and M4; the workbench moves according to a set path and time, and a layer of atomized particles is paved on the workbench at the moment; closing K4 and M4, opening K1 and M1, moving the workbench according to a set path and time, and paving a layer of smooth resin liquid on the workbench; closing K1 and M1, moving the workbench to an exposure station and triggering an exposure switch (in the process, the Z-axis lifting platform is kept still), and in the moving process, passing below the roller, the rotating roller rolls the liquid level of the resin and controls the thickness of the liquid layer of the resin; and after the exposure is finished, the Z-axis lifting platform moves downwards by 20 microns, the fifth layer printing is finished, and the printing of the multi-material device shown in the figure 7 is finished.
Claims (9)
1. A multi-material 3D printing device based on electro-hydraulic power coupling spray printing is characterized by comprising a rack, a moving platform module, a workbench, a spray head module, an injection pump module, a roller module, a direct-current high-voltage power supply, a D L P exposure machine and a control module, wherein the moving platform module is arranged on a base plate of the rack and fixedly connected with the workbench to drive the workbench to move, the spray head module is arranged above the workbench and connected with the injection pump module through a hose, a needle head of the spray head module is connected with the direct-current high-voltage power supply to spray printing materials on the workbench, the spray head module is provided with a plurality of independently liftable spray heads and fixed on the rack, the injection pump module is arranged above the spray head module and fixed on the rack, the roller module is arranged above the workbench and used for leveling the liquid level of the printing materials on the workbench, the D L P exposure machine is arranged on the rack and positioned right above the roller, the control module is respectively connected with the moving platform module, the exposure roller module, the D L P power supply and the direct-current high-voltage power supply to control the alternating-voltage of the photosensitive resin spray printing machine to cure the photosensitive resin, the photosensitive resin is a photosensitive resin, the photosensitive resin printing machine with the alternating high-3625-printing and the photosensitive resin printing module, the photosensitive resin printing module is used for curing, and the photosensitive resin printing machine, after the photosensitive resin printing, the photosensitive resin printing machine is started and the photosensitive resin printing device, the photosensitive resin printing device is started and the photosensitive resin printing device.
2. The multi-material 3D printing device based on electro-hydraulic-dynamic coupling jet printing as claimed in claim 1, wherein: the movable platform module is provided with an X-axis sliding table, a Y-axis sliding table and a Z-axis lifting table, the bottom of a guide rail of the X-axis sliding table is fixed on the surface of a base plate of the rack, the bottom of a guide rail of the Y-axis sliding table is fixed on a movable seat of the X-axis sliding table, the Z-axis lifting table is fixed on a movable seat of the Y-axis sliding table, and the workbench is arranged on the Z-axis lifting table.
3. The multi-material 3D printing device based on electro-hydraulic-dynamic coupling jet printing as claimed in claim 1, wherein: the injection pump module comprises a stepping motor lead screw sliding table, an injector and an injection pump propelling block; the stepping motor screw rod sliding table is fixed on the rack, a piston of the injector is connected with the stepping motor screw rod sliding table through an injection pump propelling block, and a needle head of the injector is connected with the spray head module through a hose.
4. The multi-material 3D printing device based on electro-hydraulic-dynamic coupling jet printing as claimed in claim 3, wherein: the injection pump module further comprises an injector base and an injector compact block; one end of the injector base is fixedly connected with the bottom of the screw rod sliding table of the stepping motor, a containing groove with an outward opening is formed in the injector base, the injector is arranged in the containing groove, and the injector pressing block covers the opening of the containing groove and is connected with the injector base.
5. The multi-material 3D printing device based on electro-hydraulic-dynamic coupling jet printing as claimed in claim 1, wherein: the spray head module comprises a dispensing needle head, a needle head fixing pipe, a pneumatic quick plugging joint, a pipe fixing seat and a lifting platform; the point is glued syringe needle and is connected and compress tightly the one end at the fixed pipe of syringe needle with direct current high voltage power supply, and the other termination of the fixed pipe of syringe needle has pneumatic quick plug and pull joint, and the fixed pipe rigid coupling of syringe needle compresses tightly through the screw on the pipe fixing base, and the pipe fixing base is fixed on the elevating platform.
6. The multi-material 3D printing device based on electro-hydraulic-dynamic coupling jet printing as claimed in claim 1, wherein: the roller module comprises a roller supporting seat, a roller and a motor; the roller supporting seat is fixed on a cross beam of the rack through a fixing plate, the lowest position of the cylindrical surface of the roller is flush with the Z-axis lifting table when the Z-axis lifting table is located at the highest position, and the roller is rigidly connected with the motor so as to control the rotating speed of the roller by controlling the rotating speed of the motor.
7. The multi-material 3D printing device based on the electro-hydrokinetic coupling jet printing is characterized by further comprising a D L P lifting manipulator and a CCD real-time observation system, wherein the D L P lifting manipulator is fixedly connected to a cross beam of the machine frame, the D L P exposure machine is arranged on the D L P lifting manipulator to enable the D L P exposure machine to move up and down, and the CCD real-time observation system is arranged on the machine frame to observe a printing material on the workbench.
8. The multi-material 3D printing device based on electro-hydraulic-dynamic coupling jet printing as claimed in claim 1, wherein: the workbench comprises a workbench upper plate and a workbench lower plate, screw counter bores are formed in the workbench lower plate and are fixed with the Z-axis lifting table in a screw fixing mode, the workbench upper plate is horizontally placed on the surface of the workbench lower plate and is fixed through screws, screw heads of the screws face downwards, and tail portions of the screws are not higher than the upper surface of the workbench upper plate.
9. The multi-material 3D printing device based on electro-hydraulic-dynamic coupling jet printing as claimed in claim 1, wherein: the control module comprises a display device, an industrial personal computer, a motion control card and a relay switch; the industrial personal computer is provided with operating software for controlling the printing equipment, is connected with the display device and controls the motion control card, the relay switch, the exposure module and the direct-current high-voltage power supply; the motion control card is used for controlling the motion of the mobile platform module, the stepping motor screw rod sliding table and the roller module; the relay switch controls the power supply of the spray head module to be started and stopped.
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| US11654619B2 (en) * | 2020-03-03 | 2023-05-23 | Bmf Material Technology Inc. | Immersion multi-material projection micro stereolithography with non-stick gas permeable transparent membrane |
| CN112936858B (en) * | 2021-03-25 | 2022-11-15 | 赛箔(上海)智能科技有限公司 | Intelligence photocuring bio-printer |
| CN113533208A (en) * | 2021-07-29 | 2021-10-22 | 昆山世纪三友测量技术有限公司 | Splicing type one-key measuring instrument |
| CN114103111A (en) * | 2021-10-28 | 2022-03-01 | 宁波大学 | Electric atomization-electric jet flow composite printing device |
| CN114571720B (en) * | 2022-01-25 | 2024-06-04 | 深圳市纵维立方科技有限公司 | Photo-curing printer |
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