CN112265266B - Bionic 3D printing equipment - Google Patents
Bionic 3D printing equipment Download PDFInfo
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- CN112265266B CN112265266B CN202011068494.9A CN202011068494A CN112265266B CN 112265266 B CN112265266 B CN 112265266B CN 202011068494 A CN202011068494 A CN 202011068494A CN 112265266 B CN112265266 B CN 112265266B
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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
- 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
- B29C64/209—Heads; Nozzles
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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
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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
-
- 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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- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The embodiment of the invention provides bionic 3D printing equipment which can print a continuous fiber reinforced resin matrix multilevel bionic structure and comprises a platform system, a reinforcing system and a matrix system, wherein the reinforcing system and the matrix system are respectively connected with the platform system; the enhancing system comprises a mechanical arm module, an enhancing material supply module and an enhancing printing head module; the substrate system comprises an optical module, a substrate material supply module and a forming rotation module; simultaneously providing a matrix material and a reinforcing material to the reinforcing print head module, and winding the reinforcing material on the solidified matrix material to form a continuous fiber reinforced skeleton structure; providing a base material for the forming rotary module, projecting ultraviolet light to the surface of the base material of the forming rotary module by the optical module, and printing a resin-based bionic structure on the basis of the continuous fiber reinforced skeleton structure; the embodiment of the invention solves the problems that in the prior art, the interlayer strength is low, the printing cost is high, and the strength can not be customized for the anisotropic bionic structure.
Description
Technical Field
The invention relates to the technical field of additive manufacturing, in particular to bionic 3D printing equipment.
Background
The animal and plant structures in nature mostly have anisotropic and hierarchical structures, such as wings, shells, bones, leaves and the like, and the continuous fiber reinforced composite materials are adopted to print the customized skeleton structure and the matrix respectively, so that the printed product has the characteristics of customizable strength and hierarchical structure, and simultaneously has the advantages of light weight, high strength and bionics.
At present, the method and the equipment for printing the bionic structure are not found, and meanwhile, the mode of reinforcing the framework firstly and then supporting the base body is adopted, so that the trouble of 3D printing support can be avoided, a real support-free structure is realized, the printed bionic product can be applied to various fields of aerospace, medical health, rail transit and the like, and the application product of the bionic product can play a great role in promoting the development of the society.
Nowadays, facing to complex situations at home and abroad, the rapid preparation of lightweight bionic products with low price and customizable strength is urgent and necessary, and fills the domestic blank.
Disclosure of Invention
The embodiment of the invention provides bionic 3D printing equipment, which aims to solve the problem that a lightweight anisotropic bionic structure with low price and customizable strength cannot be printed quickly in the prior art.
In order to solve the technical problem, the invention is realized as follows:
a bionic 3D printing device is used for printing a continuous fiber reinforced resin matrix customizable strength and a multistage bionic structure and comprises a reinforcing system, a substrate system and a platform system, wherein the reinforcing system and the substrate system are respectively fixed on the platform system;
the reinforcing system comprises a mechanical arm module, a reinforcing material supply module and a reinforcing printing head module, the reinforcing printing head module is connected with the mechanical arm module, the matrix system is communicated with the printing head module through a hose and provides matrix materials for the reinforcing printing head module, the reinforcing material supply module provides the reinforcing materials for the reinforcing printing head module, and the reinforcing printing head module winds the reinforcing materials on the solidified matrix materials to form a continuous fiber reinforced skeleton structure;
the matrix system comprises an optical module, a matrix material supply module and a forming rotation module, wherein the forming rotation module is communicated with the matrix material supply module through a hose, the matrix material supply module supplies matrix materials for the forming rotation module, the optical module irradiates ultraviolet light projection to the surface of the matrix materials of the forming rotation module, and a resin matrix bionic structure is printed on the basis of a continuous fiber reinforced framework structure;
the platform system comprises a control unit for controlling each control switch to complete model printing.
Optionally, the reinforced print head module comprises a resin printing unit, a fiber winding unit and a connecting flange, and two ends of the connecting flange are respectively connected with the mechanical arm module and the resin printing unit;
the resin printing unit comprises an inner layer body, a middle layer rotating body and an outer layer fixing cover, the connecting flange is connected with the inner layer body, the inner layer body is connected with the outer layer fixing cover, the inner layer body and the outer layer fixing cover are mutually sleeved on the inner layer and the outer layer of the middle layer rotating body, the inner layer and the outer layer are sleeved with the outer layer rotating body and matched with a bearing, and the middle layer rotating body can freely rotate relative to the inner layer body and the outer layer fixing cover.
Optionally, the resin printing unit further comprises ultraviolet lamps, a base material interface and a printing nozzle, and a plurality of ultraviolet lamps are uniformly distributed at the end part of the outer layer fixing cover;
the inner layer body is respectively communicated with the base material interface and the printing nozzle, and the base material interface is communicated with the base system through the hose.
Optionally, the fiber winding unit comprises a winding shifting piece, a winding power unit, pneumatic scissors and a fiber supply head, one end of the middle layer rotating body is connected with the winding shifting piece, the other end of the middle layer rotating body is connected with the winding power unit, the winding power unit is connected with the connecting flange, and the winding power unit drives the winding shifting piece to rotate, so that continuous fibers are wound on the outer side of the resin framework according to a set direction to form a fiber reinforced framework structure;
the pneumatic scissors and the fiber supply head are respectively connected with the outer layer fixed cover, and the pneumatic scissors can cut off the reinforcing materials provided by the fiber supply head;
the fiber supply head at least comprises one group, the fiber supply head comprises a micro motor, a driving wheel and a driven wheel, the micro motor is connected with the driving wheel, and the reinforcing material is extruded out through the rotation extrusion of the driving wheel and the driven wheel.
Optionally, the reinforcing material supply module comprises a reinforcing supply platform, a fiber raw material unit and an interface reinforcing unit, wherein the reinforcing supply platform is connected with the platform system, the fiber raw material unit is positioned on the reinforcing supply platform, and the fiber raw material unit can freely rotate relative to the reinforcing supply platform;
the interface enhancing unit comprises an enhancing box body and a rotating roller wheel, the enhancing box body is connected with the rotating roller wheel, the rotating roller wheel can freely rotate relative to the enhancing box body, carbon nanotube resin dispersion liquid is arranged in the enhancing box body, and the fiber raw material unit conveys enhancing materials to the fiber supply head in the enhancing printing head module after being soaked by the carbon nanotube resin dispersion liquid.
Optionally, the fiber raw material unit is continuous fiber, the material is carbon fiber tows or glass fiber or aramid fiber or metal fiber or carbon nanotube fiber tows, and the reinforcing material is fiber of the continuous fiber after being soaked by the carbon nanotube resin dispersion liquid.
Optionally, the optical module includes lift platform, reflector, DLP digital ray machine unit with ultraviolet light projection surface projection to on the reflector, the reflector with the lift platform is connected, the reflector for the lift platform can reciprocate, project to ultraviolet light reflection on the reflector arrives photosensitive resin surface in the rotatory module of shaping.
Optionally, the forming rotation module includes a rotation motor, a rotation unit, a forming box, and a forming table, the rotation motor is connected to the rotation unit, the rotation unit is connected to the forming box, the forming box is connected to the forming table, the forming table freely rotates relative to the forming box, the rotation motor drives the rotation unit to rotate, and the rotation unit drives the forming table to rotate;
wherein the shaping case includes shaping groove and shaping cover, the shaping groove with shaping cover threaded connection, the shaping groove with platform system connects.
Optionally, the base material supply module at least comprises a base material tank and three sets of flow control units, the base material tank stores the reinforcing material, and the reinforcing material is photosensitive resin;
the flow control unit comprises a micro magnetic pump, a pressure controller and an electromagnetic valve, the micro magnetic pump is electrically connected with the pressure controller, the pressure controller is connected with the electromagnetic valve, and two sides of the flow control unit are connected with the hose;
one of the three groups of flow control units is used for being communicated with the base material interface through the hose, and the other two groups of flow control units are connected with the forming groove through the hose.
In the embodiment of the invention, the fiber reinforced structure is printed by the reinforced printing head module, different types of fiber reinforced structures can be printed by changing the winding mode of the filament bundle winding unit, the fiber structure has multi-stage bionic characteristics, the bonding force of resin and fiber can be effectively improved by the interface reinforcing unit, the printing speed of the matrix can be effectively improved by the projection surface of the optical module, the matrix spiral forming is formed by the rotation of the forming rotating module and the rise of the liquid level of photosensitive resin, and the printed fiber reinforced resin matrix bionic structure has the advantages of controllable strength and low cost under the condition of the same product structural strength. Meanwhile, the method can be used for printing without support, and the built-in wire structure can be printed and customized. The embodiment of the invention solves the problems that in the prior art, the interlayer strength is low, the printing cost is high, and the strength can not be customized for the anisotropic bionic structure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a bionic 3D printing device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an enhanced printhead module according to an embodiment of the present invention;
FIG. 3 shows a cross-sectional view of an enhanced printhead module provided by an embodiment of the present invention;
FIG. 4 is a schematic view of a fiber feed head according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an interface enhancement unit according to an embodiment of the present invention;
FIG. 6 is a schematic view of a forming box according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a substrate material supply module according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a forming rotation module according to an embodiment of the present invention.
Description of reference numerals:
10. an enhancement system; 11. a robotic arm module; 12. an enhanced material supply module; 121. an enhanced supply platform; 122. a fiber raw material unit; 123. an interface enhancing unit; 1231. rotating the roller; 1232. reinforcing the box body; 13. enhancing the printhead module; 131. a resin printing unit; 1311. an inner layer body; 1312. a middle layer rotator; 1313. an outer layer fixing cover; 1314. a bearing; 1315. an ultraviolet lamp; 1316. a base material interface; 1317. printing a spray head; 132. a filament winding unit; 1321. winding the plectrum; 1322. winding the power unit; 1323. pneumatic scissors; 1324. a fiber supply head; 1325. a micro motor; 1326. a drive wheel; 1327. a driven wheel; 133. a connecting flange; 20. a matrix system; 21. an optical module; 211. a lifting platform; 212. a reflective mirror; 213, DLP digital optical mechanical unit; 22. a base material supply module; 221. a base material box; 222. a flow control unit; 223. an electromagnetic valve; 224. a micro magnetic pump; 225. a pressure controller; 226. a hose; 23. forming a rotating module; 231. a rotating electric machine; 232. a rotation unit; 233. forming a box; 2332. forming a groove; 2331. forming a cover; 234. a forming table; 30. a platform system; 31. a control unit;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Referring to fig. 1 to 8, an embodiment of the present invention provides a bionic 3D printing apparatus, which is used for printing a continuous fiber reinforced resin matrix customizable strength and multi-stage bionic structure, and includes a reinforcement system 10, a substrate system 20, and a platform system 30, where the reinforcement system 10 and the substrate system 20 are respectively fixed on the platform system 30;
the reinforcing system 10 comprises a mechanical arm module 11, a reinforcing material supply module 12 and a reinforcing printing head module 13, wherein the reinforcing printing head module 13 is connected with the mechanical arm module 11, the base system 20 is communicated with the printing head module 13 through a hose 226 and supplies base material to the reinforcing printing head module 13, the reinforcing material supply module 12 supplies the reinforcing material to the reinforcing printing head module 13, and the reinforcing printing head module 13 winds the reinforcing material on the solidified base material to form a continuous fiber reinforced skeleton structure;
the matrix system 20 comprises an optical module 21, a matrix material supply module 22 and a forming rotary module 23, the forming rotary module 23 is communicated with the matrix material supply module 22 through the hose 226, the matrix material supply module 22 provides matrix materials for the forming rotary module 23, the optical module 21 projects ultraviolet light to the surface of the matrix materials of the forming rotary module 23, and a resin matrix bionic structure is printed on the basis of a continuous fiber reinforced framework structure;
the platform system 30 includes a control unit 31 to control each control switch to complete the model printing.
In the embodiment of the invention, continuous fiber reinforced framework structures with different winding structure types can be printed through the arrangement of the reinforcing system 10, and the resin framework can be thickened or thinned by replacing the printing spray heads 1317 with different models; by changing the speed of the winding power unit 1322 and the number of the fiber supply heads 1324, the density of the fiber winding can be adjusted, and the strength can be customized by adjusting the thickness, number, direction of the frame units and the density of the continuous fibers.
The molding structure is provided with a plurality of continuous fiber resin frameworks, each fiber resin framework comprises a plurality of groups of winding fiber bundles, and each group of fiber bundles comprises thousands of fiber yarns and is similar to a bionic multistage structure;
it should be noted that the resin matrix biomimetic structure can be printed on the basis of the continuous fiber reinforced skeleton structure by the arrangement of the matrix system 20, and meanwhile, the device can also print the continuous fiber structure alone or print the matrix structure alone.
It should be noted that the robot arm module 11 is a six-degree-of-freedom robot arm, which can realize multi-directional arbitrary printing and save space at the same time.
It should be noted that all the electronic and electrical control switches are electrically connected to the electronic and electrical devices and are connected to the control unit 31 in a unified manner to implement the control printing of the model.
The introduced three-dimensional model of the continuous fiber-reinforced skeleton structure is a skeleton structure extracted on the basis of the matrix model, and the printed matrix model is an originally designed three-dimensional model.
It should be noted that, the fiber reinforced resin skeleton is printed by the mechanical arm, and then the substrate is printed by DLP projection, so that the printing without the supporting structure can be realized.
It should be noted that if the reinforcing material is replaced by the carbon nanotube fiber, the device can also print a customized wire-embedded structural member, and has a beneficial effect on printing a product with a conductive function.
Optionally, in an embodiment of the present invention, the reinforced printhead module 13 includes a resin printing unit 131, a fiber winding unit 132, and a connecting flange 133, where two ends of the connecting flange 133 are respectively connected to the robot arm module 11 and the resin printing unit 131;
the resin printing unit 131 comprises an inner body 1311, a middle layer rotating body 1312 and an outer layer fixing cover 1313, the connecting flange 133 is connected with the inner body 1311, the inner body 1311 is connected with the outer layer fixing cover 1313, the inner body 1311 and the outer layer fixing cover 1313 are sleeved on the inner layer and the outer layer of the middle layer rotating body 1312, the inner layer and the outer layer are sleeved with bearings 1314 for matching, and the middle layer rotating body 1312 can rotate freely relative to the inner body 1311 and the outer layer fixing cover 1313.
In the embodiment of the present invention, the resin printing unit 131 is mainly used for printing resin to generate a skeleton, so as to facilitate filament winding, and the filament winding unit 132 is mainly used for reinforcing the structure, so that any direction of the skeleton structure can be printed through the arrangement of the mechanical arm.
It should be noted that the resin printing unit 131 is sleeved with an inner layer, a middle layer and an outer layer, so that the middle layer rotating body 1312 rotates, and the controllable winding of the materials is facilitated.
Optionally, in the embodiment of the present invention, the resin printing unit 131 further includes an ultraviolet lamp 1315, a substrate material interface 1316, and a printing nozzle 1317, and a plurality of ultraviolet lamps 1315 are uniformly distributed at an end of the outer fixing cover 1313;
the inner body 1311 is respectively communicated with the substrate material interface 1316 and the printing nozzle 1317, and the substrate material interface 1316 is communicated with the substrate system 20 through the hose 226.
In the embodiment of the invention, the ultraviolet lamps 1315 are uniformly distributed, so that the resin flowing out of the spray heads can be cured quickly and uniformly, and the base materials printed by the printing spray heads 1317 are saved from the base system 20, and the material consumption is calculated more easily.
It should be noted that the ultraviolet lamp control switch is disposed on the control unit 31, and the plurality of ultraviolet lamps (1315) are electrically connected to the ultraviolet lamp control switch.
Optionally, in an embodiment of the present invention, the fiber winding unit 132 includes a winding shifting block 1321, a winding power unit 1322, a pneumatic scissors 1323, and a fiber supply head 1324, one end of the middle layer rotating body 1312 is connected to the winding shifting block 1321, the other end of the middle layer rotating body 1312 is connected to the winding power unit 1322, the winding power unit 1322 is connected to the connecting flange 133, and the winding power unit 1322 drives the winding shifting block 1321 to rotate, so that the continuous fibers are wound on the outer side of the resin skeleton according to a set direction, so as to form a fiber reinforced skeleton structure;
the pneumatic scissors 1323 and the fiber supply head 1324 are respectively connected with the outer layer fixing cover 1313, and the pneumatic scissors 1323 can cut the reinforcing material provided by the fiber supply head 1324;
the fiber supply head 1324 comprises at least one set, the fiber supply head 1324 comprises a micro motor 1325, a driving wheel 1326 and a driven wheel 1327, the micro motor 1325 is connected with the driving wheel 1326, and the reinforcing material is extruded by the rotation and extrusion of the driving wheel 1326 and the driven wheel 1327.
In the embodiment of the present invention, the filament winding unit 132 is provided to more uniformly wind the reinforcing material around the surface of the resin frame.
The control switch of the pneumatic scissors 1323 is provided on the control unit 31, the pneumatic scissors 1323 is electrically connected to the scissors control switch, and the pneumatic scissors 1323 is communicated with the compressor.
The control switch of the micro motor 1325 is provided on the control unit 31, and the micro motor 1325 is electrically connected to the micro motor control switch.
It should be noted that the winding pick 1321 and the fiber supply head 1324 are configured to extrude the reinforcing material at the same speed.
Optionally, in the embodiment of the present invention, the reinforced material supply module 12 includes a reinforced supply platform 121, a fiber material unit 122 and an interface reinforcing unit 123, the reinforced supply platform 121 is connected to the platform system 30, the fiber material unit 122 is located on the reinforced supply platform 121, and the fiber material unit 122 is freely rotatable relative to the reinforced supply platform 121;
the interface enhancing unit 123 includes an enhancing box 1232 and a rotating roller 1231, the enhancing box 1232 is connected to the rotating roller 1231, the rotating roller 1231 can rotate freely relative to the enhancing box 1232, a carbon nanotube resin dispersion liquid is disposed in the enhancing box 1232, and the fiber material unit 122 is soaked by the carbon nanotube resin dispersion liquid and then delivers the enhancing material to the fiber supply head 1324 of the enhancing print head module 13.
In the embodiment of the invention, the continuous fiber soaked with the carbon nanotube resin dispersion liquid is favorable for forming a rough surface on the surface of the fiber, increasing the friction between the fiber and the resin, enhancing the interface, being not easy to crack and delaminate and being favorable for the interface combination of the fiber and the resin.
It should be noted that, in the carbon nanotube resin dispersion liquid, the ratio of the content of the carbon nanotubes to the content of the photosensitive resin is less than 1: 5.
Optionally, in an embodiment of the present invention, the fiber raw material unit 122 is a continuous fiber, the material is a carbon fiber tow, a glass fiber, an aramid fiber, a metal fiber, or a carbon nanotube fiber tow, and the reinforcing material is a fiber of the continuous fiber after being soaked in the carbon nanotube resin dispersion liquid.
Optionally, in an embodiment of the present invention, the optical module 21 includes a lifting platform 211, a reflective mirror 212, and a DLP digital optical mechanical unit 213, the DLP digital optical mechanical unit 213 projects an ultraviolet light projection surface onto the reflective mirror 212, the reflective mirror 212 is connected to the lifting platform 211, the reflective mirror 212 is movable up and down relative to the lifting platform 211, and the ultraviolet light projected onto the reflective mirror 212 is reflected to a surface of the photosensitive resin in the molding rotation module 21.
In the embodiment of the present invention, the mirror 212 projects onto the surface of the photosensitive resin at a certain angle, so that the projection surface needs to be set in proportion in software control to make the contour of the projection onto the surface of the photosensitive resin consistent with the contour of the object to be printed.
Optionally, in an embodiment of the present invention, the forming rotation module 23 includes a rotation motor 231, a rotation unit 232, a forming box 233, and a forming table 234, where the rotation motor 231 is connected to the rotation unit 232, the rotation unit 232 is connected to the forming box 233, the forming box 233 is connected to the forming table 234, the forming table 234 freely rotates relative to the forming box 233, the rotation motor 231 drives the rotation unit 232 to rotate, and the rotation unit 232 drives the forming table 234 to rotate;
the molding box 233 includes a molding groove 2332 and a molding cover 2331, the molding groove 2332 is screwed with the molding cover 2331, and the molding groove 2332 is connected with the platform system 30.
In the embodiment of the present invention, since the projection is inclined, there is a case that the printed shadow area of the skeleton structure cannot be cured, so that the molding table 234 rotates to effectively avoid the case that the shadow cannot be cured due to shielding.
After the model is printed, the substrate material supply module 22 withdraws the photosensitive resin in the molding tank 2332, and sequentially removes the molding cover 2331 and the molding table 234, so that the product with the fiber reinforced resin-based biomimetic structure is positioned on the molding table.
Optionally, in an embodiment of the present invention, the substrate material supplying module 22 at least includes one substrate material tank 221 and three sets of flow control units 222, where the substrate material tank 221 stores the enhancing material, and the enhancing material is photosensitive resin;
the flow control unit 222 comprises a micro magnetic pump 224, a pressure controller 225 and an electromagnetic valve 223, the micro magnetic pump 224 is electrically connected with the pressure controller 225, the pressure controller 225 is connected with the electromagnetic valve 223, and two sides of the flow control unit are connected with the hose 226;
one of the three sets of flow control units 222 is used to communicate with the substrate port 1316 through the hose 226, and the other two sets are connected with the forming groove 2132 through the hose 226.
In the embodiment of the present invention, three sets of flow control units 222 are provided to realize different functions of photosensitive resin, one set is used for printing a resin skeleton to facilitate the winding of a material, and the other two sets are communicated with the molding groove 2132, one set is used for inputting a matrix material, and the other set is used for outputting the matrix material, and is mainly used for controlling the rising or falling of the liquid level of the photosensitive resin when printing a matrix, so as to realize the layered printing of the matrix.
It should be noted that at least three sets of the solenoid valve 223 control switches are provided on the control unit 31, and the plurality of solenoid valves 223 are electrically connected to the solenoid valve control switches.
The working principle and the working process of the invention are as follows:
adding photosensitive resin into the base material tank 221, pouring the prepared carbon nanotube resin dispersion into the reinforced tank 1232, wherein the carbon nanotube resin dispersion at least needs to flow over the rotating roller 1231, and connecting the fiber raw material unit 122 with the reinforced supply platform 121;
passing the continuous fibers on the fiber stock unit 122 under the rotating roller 1231 and connecting to the fiber supply head 1324, leveling the forming table 234;
the framework three-dimensional model is led into the control unit 31, an enhanced printing button on the control unit 31 is clicked, and the model starts to print the continuous fiber reinforced resin framework;
in the printing process, firstly, the program turns on the micro magnetic pump 224 communicated with the enhancement system 20, the resin in the substrate material tank 221 reaches the printing spray nozzle 1317 through the flow control unit 222 and is sprayed out, and meanwhile, the program turns on the ultraviolet lamp control switch to control the ultraviolet lamp 1315 to be turned on, and the resin at the printing spray nozzle 1317 is irradiated to be cured;
the micro motor control switch on the control unit 31 is turned on by the program according to the model requirement, the micro motor 1325 in the fiber supply head 1324 drives the driving wheel 1326 and the driven wheel 1327 to rotate, so as to extrude the reinforced material, the extruded reinforced material and the resin sprayed by the printing spray nozzle 1317 are cured under the irradiation of the ultraviolet lamp 1315, the fiber raw material unit 122 and the rotating roller 1231 are driven to rotate while the reinforced material is extruded, and the continuous fibers are soaked to become the reinforced material and then are conveyed to the fiber supply head 1324;
the winding power unit 1322 drives the middle layer rotating body 1312 to rotate, the middle layer rotating body 1312 drives the winding shifting piece 1321 to rotate, and the winding shifting piece 1321 drives the reinforcing material to complete winding on the outer surface of the resin framework;
after printing of a framework is completed, the solenoid valve 223 in the flow control unit 222 communicated with the reinforcing system 10 is closed, the printing spray nozzle 1317 does not discharge any more, the pneumatic scissors 1323 are controlled to cut off reinforcing materials near the fiber supply head 1324, and printing of a continuous fiber reinforced resin framework is completed;
according to the shape of the model, the above processes are repeated on the forming table 234 to complete the printing of all the framework structures;
mounting a molding cover 2331 on the molding groove 2332, opening a group of flow control units 222 communicated with the molding groove 2332 for the substrate material to enter the molding groove 2332 until being flush with the molding table 234, closing the solenoid valves 223 of the group of flow control units 222;
introducing a matrix model, clicking the control unit 31 to start matrix printing, and driving the rotating unit 232 by the rotating motor 231 so as to drive the forming table 234 to start rotating;
meanwhile, the electromagnetic valves 223 in the group of flow control units 222 communicated with the molding tank 2332 are opened, the substrate material is continuously supplied to the molding tank 2332, the liquid level in the molding tank 2332 is gradually raised, meanwhile, the DLP digital optical mechanical unit 213 is opened and projected onto the liquid level in the molding tank 2332, the DLP digital optical mechanical unit 213 is gradually raised to be consistent with the rising speed of the liquid level, the substrate layer-by-layer printing is spirally and gradually completed, and the electromagnetic valves 223 are closed;
after the substrate printing is completed, the solenoid valves 223 of the other set of flow control units 222 in communication with the molding tank 2332 are opened, the uncured substrate material in the molding tank 2332 is gradually flowed back into the substrate material tank 221 until the liquid level of the uncured substrate material is below the molding table, and the solenoid valves 223 of the set of flow control units 222 in communication with the molding tank 2332 are closed. The forming hood 2331 is removed and the model of the continuous fiber reinforced resin-based biomimetic structure is presented on the forming table 234.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The bionic 3D printing equipment is characterized by being used for printing a continuous fiber reinforced resin matrix customizable strength and a multi-stage bionic structure and comprising a reinforcing system (10), a base body system (20) and a platform system (30), wherein the reinforcing system (10) and the base body system (20) are respectively fixed on the platform system (30);
the reinforcing system (10) comprises a mechanical arm module (11), a reinforcing material supply module (12) and a reinforcing print head module (13), wherein the reinforcing print head module (13) is connected with the mechanical arm module (11), the matrix system (20) is communicated with the print head module (13) through a hose and provides matrix material for the reinforcing print head module (13), the reinforcing material supply module (12) provides reinforcing material for the reinforcing print head module (13), and the reinforcing print head module (13) winds the reinforcing material on the solidified matrix material to form a continuous fiber reinforced skeleton structure;
the matrix system (20) comprises an optical module (21), a matrix material supply module (22) and a forming rotary module (23), wherein the forming rotary module (23) is communicated with the matrix material supply module (22) through a hose, the matrix material supply module (22) provides matrix materials for the forming rotary module (23), the optical module (21) projects ultraviolet light to irradiate the surface of the matrix materials of the forming rotary module (23), and a resin matrix bionic structure is printed on the basis of a continuous fiber reinforced framework structure;
the platform system (30) comprises a control unit (31) for controlling each control switch to print the resin matrix bionic structure on the basis of completing the continuous fiber reinforced skeleton structure.
2. The biomimetic 3D printing apparatus according to claim 1, wherein the enhanced print head module (13) comprises a resin printing unit (131), a fiber winding unit (132), and a connecting flange (133), wherein two ends of the connecting flange (133) are respectively connected with the mechanical arm module (11) and the resin printing unit (131);
the resin printing unit (131) comprises an inner layer body (1311), a middle layer rotating body (1312) and an outer layer fixing cover (1313), the connecting flange (133) is connected with the inner layer body (1311), the inner layer body (1311) is connected with the outer layer fixing cover (1313), the inner layer body (1311) and the outer layer fixing cover (1313) are mutually sleeved on the inner layer and the outer layer of the middle layer rotating body (1312), a bearing (1314) for interlayer is sleeved on the inner layer and the outer layer fixing cover, and the middle layer rotating body (1312) can freely rotate relative to the inner layer body (1311) and the outer layer fixing cover (1313).
3. The bionic 3D printing device according to claim 2, wherein the resin printing unit (131) further comprises ultraviolet lamps (1315), a base material interface (1316) and a printing spray head (1317), and a plurality of ultraviolet lamps (1315) are uniformly distributed at the end of the outer layer fixing cover (1313);
the inner layer body (1311) is respectively communicated with the base material interface (1316) and the printing spray head (1317), and the base material interface (1316) is communicated with the base system (20) through a hose.
4. The bionic 3D printing device according to claim 2, wherein the fiber winding unit (132) comprises a winding shifting piece (1321), a winding power unit (1322), pneumatic scissors (1323) and a fiber supply head (1324), one end of the middle layer rotating body (1312) is connected with the winding shifting piece (1321), the other end of the middle layer rotating body (1312) is connected with the winding power unit (1322), the winding power unit (1322) is connected with the connecting flange (133), and the winding power unit (1322) drives the winding shifting piece (1321) to rotate, so that continuous fibers are wound outside the resin framework according to a set direction to form a fiber reinforced framework structure;
the pneumatic scissors (1323) and the fiber supply head (1324) are respectively connected with the outer layer fixing cover (1313), and the pneumatic scissors (1323) can cut the reinforcing material provided by the fiber supply head (1324);
the fiber supply head (1324) at least comprises one group, the fiber supply head (1324) comprises a micro motor (1325), a driving wheel (1326) and a driven wheel (1327), the micro motor (1325) is connected with the driving wheel (1326), and the reinforcing material is extruded out through the rotation extrusion of the driving wheel (1326) and the driven wheel (1327).
5. The biomimetic 3D printing device according to claim 4, wherein the enhanced material supply module (12) comprises an enhanced supply platform (121), a fiber raw material unit (122) and an interface enhancement unit (123), the enhanced supply platform (121) is connected with the platform system (30), the fiber raw material unit (122) is located on the enhanced supply platform (121), and the fiber raw material unit (122) is freely rotatable relative to the enhanced supply platform (121);
the interface enhancing unit (123) comprises a rotating roller (1231) and an enhancing box body (1232), the enhancing box body (1232) is connected with the rotating roller (1231), the rotating roller (1231) can freely rotate relative to the enhancing box body (1232), carbon nanotube resin dispersion liquid is arranged in the enhancing box body (1232), and the fiber raw material unit (122) is soaked by the carbon nanotube resin dispersion liquid and then conveys enhancing materials to the fiber supply head (1324) in the enhancing print head module (13).
6. The bionic 3D printing device according to claim 5, wherein the fiber raw material unit (122) is a continuous fiber, the material is a carbon fiber tow or a glass fiber or an aramid fiber or a metal fiber or a carbon nanotube fiber tow, and the reinforcing material is a continuous fiber soaked by the carbon nanotube resin dispersion liquid.
7. The biomimetic 3D printing apparatus according to claim 1, wherein the optical module (21) comprises a lifting platform (211), a reflective mirror (212), and a DLP digital optical mechanical unit (213), the DLP digital optical mechanical unit (213) projects an ultraviolet light projection surface onto the reflective mirror (212), the reflective mirror (212) is connected to the lifting platform (211), the reflective mirror (212) is movable up and down relative to the lifting platform (211), and the ultraviolet light projected onto the reflective mirror (212) is reflected to a photosensitive resin surface in the molding rotation module (23).
8. The bionic 3D printing device according to claim 3, wherein the forming rotation module (23) comprises a rotation motor (231), a rotation unit (232), a forming box (233) and a forming table (234), the rotation motor (231) is connected with the rotation unit (232), the rotation unit (232) is connected with the forming box (233), the forming box (233) is connected with the forming table (234), the forming table (234) freely rotates relative to the forming box (233), the rotation motor (231) drives the rotation unit (232) to rotate, and the rotation unit (232) drives the forming table (234) to rotate;
wherein the forming box (233) comprises a forming groove (2332) and a forming cover (2331), the forming groove (2332) is in threaded connection with the forming cover (2331), and the forming groove (2332) is connected with the platform system (30).
9. The bionic 3D printing device according to claim 8, wherein the base material supply module (22) at least comprises a base material tank (221) and three sets of flow control units (222), the base material tank (221) stores the base material, and the base material is photosensitive resin;
the flow control unit (222) comprises a micro magnetic pump (224), a pressure controller (225) and an electromagnetic valve (223), the micro magnetic pump (224) is electrically connected with the pressure controller (225), the pressure controller (225) is connected with the electromagnetic valve (223), and two sides of the flow control unit are connected with hoses;
one of the three sets of flow control units (222) is used for communicating with the substrate material interface (1316) through a hose, and the other two sets of flow control units are connected with the forming groove (2332) through a hose.
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| CN112847733B (en) * | 2021-02-05 | 2022-04-01 | 成都建工赛利混凝土有限公司 | Beat printer head convenient to improve 3D and print mortar interlaminar strength |
| CN113119467B (en) * | 2021-04-28 | 2022-10-18 | 青岛科技大学 | Printing apparatus |
| CN114714620A (en) * | 2022-03-01 | 2022-07-08 | 东华大学 | Continuous fiber reinforced composite material 3D printing head and using method thereof |
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