CN111086210A - 3D printing-based equipment and method for processing net-shaped multilayer structure composite material - Google Patents
3D printing-based equipment and method for processing net-shaped multilayer structure composite material Download PDFInfo
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- CN111086210A CN111086210A CN201911248024.8A CN201911248024A CN111086210A CN 111086210 A CN111086210 A CN 111086210A CN 201911248024 A CN201911248024 A CN 201911248024A CN 111086210 A CN111086210 A CN 111086210A
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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
- B29C64/165—Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
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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
- B29C64/255—Enclosures for the building material, e.g. powder containers
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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
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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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
- B33Y70/00—Materials specially adapted for additive manufacturing
Abstract
The invention discloses a device and a method for processing a reticular multi-layer structure composite material based on 3D printing, which belongs to the technical field of material processing and forming, wherein powder raw materials are added into a first storage tank and a second storage tank, a solvent is added into a liquid storage tank, liquid nitrogen is introduced into a freezing platform from the liquid nitrogen tank, the powder raw materials flow into a first stirring tank and a second stirring tank, the solvent in the liquid storage tank flows into the first stirring tank and the second stirring tank, liquid drops drop from a 3D printing nozzle to the freezing platform for rapid freezing and solidification forming, the 3D printing nozzle prints a plurality of mutually spaced linear tracks along one direction, and then prints a plurality of mutually spaced linear tracks again along the other direction on the basis of the linear tracks to form a reticular first layer structure; then, printing a mesh second layer on the basis of the mesh first layer structure, and printing an incremental multilayer structure by analogy; the 3D printing technology is applied to the preparation process of the composite material, the preparation of the composite material on a microscale can be realized, and the printing forming precision is high.
Description
Technical Field
The invention belongs to the technical field of material processing and forming, and particularly relates to a processing technology of a reticular multi-layer structure composite material adopting a 3D printing technology.
Background
The composite material is a material formed by mixing two or more different substances, can exert the advantages of each constituent material, overcomes the defect of a single material, greatly expands the application range of the material, and is increasingly applied to various fields. With the continuous and deep research in the field of bionic materials and the verification of computer simulation results, it is found that the performance of the composite material can be improved to a great extent by manufacturing the composite material into some specific shapes, such as a spiral structure, a fabric-like structure and the like. To prepare such composite materials with specific shapes, specific structures on the micro-scale, such as staggered arrangement, weaving and the like, of the materials are required to be realized, and the level change of the materials is required to be realized, which is difficult to realize by the existing composite material processing technology, such as powder metallurgy, casting, die forging and the like.
3D printing is one of the rapid prototyping technologies, which is a technology for manufacturing an object by using a bondable material such as powdered metal or plastic in a layer-by-layer printing manner. At present, for different printing materials, the use modes of 3D printing technologies are also divided into multiple types, and mainly include stereolithography SLA, LOM manufacturing by layered entity, selective laser sintering SLS, deposition modeling FDM, selective laser melting SLM, and the like, so that 3D printing of materials such as light-cured resin, metal and plastic films, thermoplastic plastics, metal powder, ceramic powder, and the like can be realized.
The document with chinese patent publication No. CN107901400A discloses a 3D printing method, in which a printing material is dissolved in a printing solvent to form a printing solution, a printing nozzle is driven to move according to a preset track and eject the printing solution, and a deposition solution is added to deposit the printing material. The method is complex, can only print easily soluble printing materials, cannot print the difficultly soluble printing materials, and is difficult to meet the requirements on printing shapes and material compounding. Chinese patent publication No. CN108339979A discloses a method for preparing a three-dimensional spatial network structure composite material by 3D printing, which comprises preparing ceramic-metal composite powder, preparing a three-dimensional spatial network structure preform from the ceramic-metal composite powder by 3D printing, and printing pure metal powder in the spatial network part of the preform by 3D printing to obtain the three-dimensional spatial network structure composite material. The invention has low automation degree, can not realize the microscopic level change of the material, has low printing precision and is difficult to ensure the uniform dispersion state of the composite powder in the printing process.
Disclosure of Invention
Aiming at the defect that the composite material with a specific shape is difficult to prepare in the prior art, the invention provides the processing equipment and the processing method of the composite material with the reticular multi-layer structure based on the 3D printing technology.
In order to solve the technical problem, the processing equipment for the reticular multi-layer structure composite material based on 3D printing is realized by the following technical scheme: the automatic printing device comprises a first storage box, a second storage box, a liquid storage tank, a first stirring tank, a second stirring tank and a 3D printing nozzle, wherein a first weighing sensor is arranged at the bottom of the first storage box, the bottom of the first storage box is communicated with the top of the first stirring tank below the first storage box through a pipeline, and a first electromagnetic valve is arranged on the pipeline; the bottom of the second material storage box is provided with a second weighing sensor, the bottom of the second material storage box is communicated with the top of the second stirring tank through a pipeline, and a second electromagnetic valve is arranged on the pipeline; the bottom of the liquid storage tank is communicated with the top of the first stirring tank through a pipeline, a third electromagnetic valve is arranged on the pipeline, a first flow sensor is arranged on the pipeline between the liquid storage tank and the third electromagnetic valve, the bottom of the liquid storage tank is also communicated with the top of the second stirring tank through a pipeline, a fourth electromagnetic valve is arranged on the pipeline, and a second flow sensor is arranged on the pipeline between the liquid storage tank and the fourth electromagnetic valve; the third weighing sensor is arranged at the bottom of the first stirring tank, the bottom of the first stirring tank is communicated with the 3D printing nozzle through a pipeline, and a fifth electromagnetic valve is arranged on the pipeline; the bottom of the second stirring tank is provided with a fourth weighing sensor and is communicated with the 3D printing nozzle through a pipeline, and the pipeline is provided with a sixth electromagnetic valve; an X-axis motor, a Y-axis motor and a Z-axis motor are connected to the 3D printing spray head; a freezing table is arranged below the 3D printing spray head, a temperature sensor is arranged on the upper surface of the freezing table, the liquid nitrogen tank is communicated with a liquid inlet of the freezing table arranged on the freezing table through a pipeline, and a seventh electromagnetic valve is arranged on the pipeline; the 3D printing nozzle, the X-axis motor, the Y-axis motor and the Z-axis motor are respectively connected with the computer control system through respective control lines, and the computer control system is further respectively connected with the temperature sensors, the weighing sensors, the electromagnetic valves and the flow sensors.
The processing method of the processing equipment for the reticular multi-layer structure composite material based on 3D printing adopts the following technical scheme that the processing equipment comprises the following steps:
the method comprises the following steps: adding powder raw materials into the first storage box and the second storage box, and adding a solvent into the liquid storage tank;
step two: the computer control system controls the seventh electromagnetic valve and the eighth electromagnetic valve to be opened, the liquid nitrogen tank feeds liquid nitrogen into the freezing table, the temperature sensor monitors the temperature of the freezing table, and when the temperature is reduced to a set value, the computer control system controls the seventh electromagnetic valve and the eighth electromagnetic valve to be closed;
step three: the computer control system controls the first, second, third and fourth electromagnetic valves to be opened, the powder in the first storage tank flows into the first stirring tank, the powder in the second storage tank flows into the second stirring tank, the solvent in the liquid storage tank flows into the first stirring tank and the second stirring tank, the first weighing sensor and the second weighing sensor monitor the numerical value of the mass reduction in the corresponding storage tanks, the first flow sensor and the second flow sensor monitor the flow rate flowing into the corresponding stirring tanks, and after the set value is reached, the computer control system controls the first, second, third and fourth electromagnetic valves to be closed;
step four: the computer control system controls the first stirring tank and the second stirring tank to stir, and the stirring is stopped when the stirring is carried out for a set time;
step five: the computer control system controls the fifth electromagnetic valve to be opened and the sixth electromagnetic valve to be closed, liquid drops drop from the 3D printing nozzle to the freezing table to be frozen, solidified and formed rapidly, the computer control system controls the X-axis motor, the Y-axis motor and the Z-axis motor to drive the 3D printing nozzle to print, a plurality of linear tracks which are mutually spaced are printed along one direction, and then a plurality of linear tracks which are mutually spaced are printed along the other direction again on the basis of the linear tracks to form a net-shaped first layer structure; and then, the computer control system controls the fifth electromagnetic valve to be closed and the sixth electromagnetic valve to be opened, the reticular second layer is printed on the basis of the reticular first layer structure, the computer control system controls the fifth electromagnetic valve to be opened and the sixth electromagnetic valve to be closed, the reticular third layer structure is printed according to the same track, and the incremental multilayer structure is printed by analogy.
Compared with the prior art, the invention has the following positive and beneficial effects:
1. the invention applies the 3D printing technology to the preparation flow of the composite material, can realize the preparation of the composite material on the microscopic scale, and has high printing and forming precision.
2. According to the invention, the technical scheme that various kinds of original powder of the composite material are firstly dispersed in the solution and then 3D printing is carried out is adopted, so that the problem that the original powder cannot be uniformly distributed in the 3D printing process is effectively solved.
3 the preparation and printing process of the invention is controlled by a computer program, only corresponding parameters need to be input, the automation degree is high, the forming quality is good, the operation is simple and convenient, the material is saved, and the production efficiency is greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of a processing device for a reticular multi-layer structure composite material based on 3D printing.
FIG. 2 is a flow chart of a processing method of the processing equipment for the reticular multi-layer structure composite material based on 3D printing;
in the figure: 1-a first material storage tank, 2-a second material storage tank, 3-a liquid storage tank, 4-a first stirring tank, 5-a second stirring tank, 6-3D printing spray head, 7-a freezing table, 8-a liquid nitrogen tank, 9-a waste liquid tank, 10-a computer control system, 11-a first weighing sensor, 12-a first flow sensor, 13-a second flow sensor, 14-a second weighing sensor, 15-a first electromagnetic valve, 16-a third electromagnetic valve, 17-a second electromagnetic valve, 18-a fourth electromagnetic valve, 19-a third weighing sensor, 20-a fourth weighing sensor, 21-a fifth electromagnetic valve, 22-a sixth electromagnetic valve, 23-an X-axis motor, 24-a Y-axis motor, 25-a Z-axis motor and 26-a temperature sensor, 27-a seventh electromagnetic valve, 28-a freezing table liquid inlet, 29-a freezing table liquid outlet, 30-an eighth electromagnetic valve and 31-a freeze dryer.
Detailed Description
Referring to fig. 1, the processing equipment for the reticular multi-layer structure composite material based on 3D printing comprises a first storage tank 1, a second storage tank 2, a liquid storage tank 3, a first stirring tank 4, a second stirring tank 5, a 3D printing spray head 6, a freezing table 7 and the like. The top is first storage case 1, second storage case 2 and liquid storage pot 3, and first agitator tank 4 and second agitator tank 5 are in the below of first storage case 1, second storage case 2 and liquid storage pot 3, and 3D prints shower nozzle 6 in the below of first agitator tank 4 and second agitator tank 5, and freezing platform 7 is in the below of 3D printing shower nozzle 6.
A first weighing sensor 11 is installed at the bottom of the first storage box 1, and the first weighing sensor 11 is connected with the computer control system 10 through a control line. The bottom of the first material storage box 1 is communicated with the top of the first stirring tank 4 below the first material storage box through a pipeline, a first electromagnetic valve 15 is installed on the pipeline, and the first electromagnetic valve 15 is connected with the computer control system 10 through a control line.
And a second weighing sensor 14 is arranged at the bottom of the second storage box 2, and the second weighing sensor 14 is connected with the computer control system 10 through a control line. The bottom of the second material storage tank 2 is communicated with the top of the second stirring tank 5 through a pipeline, a second electromagnetic valve 17 is installed on the pipeline, and the second electromagnetic valve 17 is connected with the computer control system 10 through a control line.
The bottom of the liquid storage tank 3 is communicated with the top of the first stirring tank 4 through a pipeline, a third electromagnetic valve 16 is arranged on the pipeline, and the third electromagnetic valve 16 is connected with the computer control system 10 through a control line. A first flow sensor 12 is mounted on the pipe between the reservoir 3 and the third solenoid valve 16, the first flow sensor 12 being connected to the computer control system 10 by a control line. The bottom of the liquid storage tank 3 is also communicated with the top of the second stirring tank 5 through a pipeline, a fourth electromagnetic valve 18 is arranged on the pipeline, and the fourth electromagnetic valve 18 is connected with the computer control system 10 through a control line. A second flow sensor 13 is arranged on a pipeline between the liquid storage tank 3 and the fourth electromagnetic valve 18, and the second flow sensor 13 is connected with the computer control system 10 through a control line.
The bottom of the first stirring tank 4 is provided with a third weighing sensor 19, and the third weighing sensor 19 is connected with the computer control system 10 through a control line. The bottom of the first stirring tank 4 is communicated with the 3D printing nozzle 6 through a pipeline, a fifth electromagnetic valve 21 is installed on the pipeline, and the fifth electromagnetic valve 21 is connected with the computer control system 10 through a control line.
And a fourth weighing sensor 20 is installed at the bottom of the second stirring tank 5, and the fourth weighing sensor 20 is connected with the computer control system 10 through a control line. The bottom of the second stirring tank 5 is communicated with the 3D printing nozzle 6 through a pipeline, a sixth electromagnetic valve 22 is installed on the pipeline, and the sixth electromagnetic valve 22 is connected with the computer control system 10 through a control line.
The 3D printing nozzle 6 is connected with three motors, namely an X-axis motor 23, a Y-axis motor 24 and a Z-axis motor 25, and the computer control system 10 controls the 3D printing nozzle 6 to move along the directions of an X axis, a Y axis and a Z axis. The 3D printing nozzle 6, the X-axis motor 23, the Y-axis motor 24 and the Z-axis motor 25 are respectively connected with the computer control system 10 through respective control lines.
Below the 3D printing nozzle 6 is a freezing table 7, a temperature sensor 26 is mounted on the upper surface of the freezing table 7, and the temperature sensor 26 is connected with the computer control system 10 through a control line. A liquid nitrogen tank 8 and a waste liquid tank 9 are arranged beside the freezing table 7, the liquid nitrogen tank 8 is communicated with a freezing table liquid inlet 28 arranged on the freezing table 7 through a pipeline, a seventh electromagnetic valve 27 is arranged on the pipeline, and the seventh electromagnetic valve 27 is connected with the computer control system 10 through a control line. The waste liquid tank 9 is communicated with a freezing table liquid outlet 29 arranged on the freezing table 7 through a pipeline, an eighth electromagnetic valve 30 is arranged on the pipeline, and the eighth electromagnetic valve 30 is connected with the computer control system 10 through a control line.
With reference to fig. 2, the apparatus shown in fig. 1 operates by the following steps:
step one, in the computer control system 10, a three-dimensional model is built according to the shape of a material by using drawing software, a required structure is drawn, then the three-dimensional model is imported into software for layering, converted into code data, and exported to be a moving track program code of the 3D printing nozzle. And then setting the printing speed, the printing flow, the printing program, the stirring time and the working modes and parameters of all the sensors. Then, a material is added to the first storage tank 1, a first powder raw material is added, a second powder raw material is added to the second storage tank 2, and a solvent is added to the liquid storage tank 3. The powder material is solid powder, such as graphene, nanometer alumina, etc. The solvent is a solvent capable of dispersing solid powder, such as ethanol, etc.
Step two, the computer control system 10 controls the seventh electromagnetic valve 27 and the eighth electromagnetic valve 30 to be opened, the liquid nitrogen tank 8 feeds liquid nitrogen into the freezing table 7, the temperature sensor 26 always monitors the temperature of the freezing table 7, and when the temperature is reduced to a set value, the computer control system 10 controls the seventh electromagnetic valve 27 and the eighth electromagnetic valve 30 to be closed; when the temperature is detected to exceed the set temperature, the temperature sensor 26 sends an alarm signal, then the alarm is cancelled or the liquid nitrogen is supplemented and replaced according to the setting selection of the computer control system 10, and the redundant liquid nitrogen flows into the waste liquid tank 9 for collection and treatment.
Step three, the computer control system 10 controls the first electromagnetic valve 15 to be opened, the powder in the first storage tank 1 flows into the first stirring tank 4, the first weighing sensor 11 monitors the numerical value of the mass reduction in the first storage tank 1, and after the numerical value reaches a set value, the computer control system 10 controls the first electromagnetic valve 15 to be closed; meanwhile, the computer control system 10 controls the second electromagnetic valve 17 to be opened, the powder in the second storage tank 2 flows into the second stirring tank 5, the second weighing sensor 14 monitors the mass reduction value in the second storage tank 2, and the computer control system 10 controls the second electromagnetic valve 17 to be closed after the mass reduction value reaches a set value; meanwhile, the computer control system 10 controls the third electromagnetic valve 16 to be opened, the solvent in the liquid storage tank 3 flows into the first stirring tank 4, the first flow sensor 12 monitors the flow flowing into the first stirring tank 4, and the computer control system 10 controls the third electromagnetic valve 16 to be closed after the set value is reached; meanwhile, the computer control system 10 controls the fourth electromagnetic valve 18 to be opened, the solvent in the liquid storage tank 3 flows into the second stirring tank 5, the second flow sensor 13 monitors the flow rate flowing into the second stirring tank 5, and the computer control system 10 controls the fourth electromagnetic valve 18 to be closed after the set value is reached.
And step four, after the computer control system 10 controls the first electromagnetic valve 15 and the third electromagnetic valve 16 to be closed completely, the first stirring tank 4 starts to stir according to a set time length, the third weighing sensor 19 monitors the mass change in the first stirring tank 4, an alarm signal is sent out when the allowance is lower than a set value, and then the alarm is cancelled or the materials are refilled according to the set selection of the computer control system 10. Meanwhile, after the computer control system 10 controls the second electromagnetic valve 17 and the fourth electromagnetic valve 18 to be closed completely, the second stirring tank 5 starts to stir according to a set time length, the fourth weighing sensor 20 monitors the mass change in the second stirring tank 5, and when the allowance is lower than a set value, an alarm signal is sent out, and then the alarm is cancelled or the materials are refilled according to the set selection of the computer control system 10.
Step five, when the stirring is carried out for a set time length by the computer control system 10, the stirring is stopped; then the computer control system 10 controls the X-axis motor 23, the Y-axis motor 24 and the Z-axis motor 25 to drive the 3D printing nozzle 6 to start printing according to the setting; firstly, the computer control system 10 controls the fifth electromagnetic valve 21 to be opened, the sixth electromagnetic valve 22 is closed, liquid drops drop from the 3D printing nozzle 6 to the freezing platform 7 to be frozen, solidified and formed rapidly, the 3D printing nozzle 6 prints a plurality of linear tracks which are mutually spaced along one direction according to the setting of the computer control system 10, and then prints a plurality of linear tracks which are mutually spaced along the other direction again on the basis of the printed linear tracks to form a net-shaped first layer structure; then, the computer control system 10 controls the fifth electromagnetic valve 21 to close and the sixth electromagnetic valve 22 to open, and prints the second mesh layer on the basis of the first mesh layer, and then the computer control system 10 controls the fifth electromagnetic valve 21 to open and the sixth electromagnetic valve 22 to close, and prints the third mesh layer according to the same track. By analogy, a mesh fourth layer, a mesh fifth layer, and the like can be printed in an increasing multilayer structure.
And step six, after the printing is finished to the set number of layers, the computer control system 10 controls the fifth electromagnetic valve 21 and the sixth electromagnetic valve 22 to be closed, and the printing is finished. The material is then transferred to a freeze dryer 31 next to the freezing station 7 for freeze drying and sintering after drying is complete.
Fig. 1-2 only show the composite manufacturing of two different materials, and according to actual requirements, the composite manufacturing of a plurality of different materials can be completed, and only additional storage tanks, stirring tanks, corresponding electromagnetic valves and sensors need to be added.
Claims (7)
1. The utility model provides a netted multilayer structure combined material processing equipment based on 3D prints, includes first storage case (1), second storage case (2), liquid storage pot (3), first agitator tank (4), second agitator tank (5) and 3D print shower nozzle (6), characterized by: the bottom of the first material storage box (1) is provided with a first weighing sensor (11), the bottom of the first material storage box (1) is communicated with the top of the first stirring tank (4) below the first material storage box through a pipeline, and the pipeline is provided with a first electromagnetic valve (15); a second weighing sensor (14) is arranged at the bottom of the second storage box (2), the bottom of the second storage box (2) is communicated with the top of the second stirring tank (5) through a pipeline, and a second electromagnetic valve (17) is arranged on the pipeline; the bottom of the liquid storage tank (3) is communicated with the top of the first stirring tank (4) through a pipeline, a third electromagnetic valve (16) is arranged on the pipeline, a first flow sensor (12) is arranged on the pipeline between the liquid storage tank (3) and the third electromagnetic valve (16), the bottom of the liquid storage tank (3) is also communicated with the top of the second stirring tank (5) through a pipeline, a fourth electromagnetic valve (18) is arranged on the pipeline, and a second flow sensor (13) is arranged on the pipeline between the liquid storage tank (3) and the fourth electromagnetic valve (18); a third weighing sensor (19) is arranged at the bottom of the first stirring tank (4), the bottom of the first stirring tank (4) is communicated with the 3D printing nozzle (6) through a pipeline, and a fifth electromagnetic valve (21) is arranged on the pipeline; a fourth weighing sensor (20) is arranged at the bottom of the second stirring tank (5), the bottom of the second stirring tank (5) is communicated with the 3D printing nozzle (6) through a pipeline, and a sixth electromagnetic valve (22) is arranged on the pipeline; the 3D printing nozzle (6) is connected with an X-axis motor (23), a Y-axis motor (24) and a Z-axis motor (25); a freezing table (7) is arranged below the 3D printing spray head (6), a temperature sensor (26) is arranged on the upper surface of the freezing table (7), the liquid nitrogen tank (8) is communicated with a freezing table liquid inlet (28) arranged on the freezing table (7) through a pipeline, and a seventh electromagnetic valve (27) is arranged on the pipeline; the 3D printing nozzle (6), the X-axis motor (23), the Y-axis motor (24) and the Z-axis motor (25) are respectively connected with the computer control system (10) through respective control lines, and the computer control system (10) is further respectively connected with the temperature sensor (26), the weighing sensors, the electromagnetic valves and the flow sensors.
2. The 3D printing-based reticulated multilayer structure composite processing apparatus of claim 1, wherein: the waste liquid tank (9) is communicated with a freezing table liquid outlet (29) arranged on the freezing table (7) through a pipeline, an eighth electromagnetic valve (30) is arranged on the pipeline, and the eighth electromagnetic valve (30) is connected with the computer control system (10) through a control line.
3. The processing method of the processing equipment for the reticular multi-layer structure composite material based on the 3D printing as claimed in claim 1, which is characterized by comprising the following steps:
the method comprises the following steps: adding powder raw materials into the first material storage box (1) and the second material storage box (2), and adding a solvent into the liquid storage tank (3);
step two: the computer control system (10) controls the seventh electromagnetic valve (27) and the eighth electromagnetic valve (30) to be opened, liquid nitrogen is introduced into the freezing table (7) from the liquid nitrogen tank (8), the temperature of the freezing table (7) is monitored by the temperature sensor (26), and when the temperature is reduced to a set value, the computer control system (10) controls the seventh electromagnetic valve (27) and the eighth electromagnetic valve (30) to be closed;
step three: the computer control system (10) controls the first, second, third and fourth electromagnetic valves (15, 17, 16, 18) to be opened, the powder in the first storage tank (1) flows into the first stirring tank (4), the powder in the second storage tank (2) flows into the second stirring tank (5), the solvent in the liquid storage tank (3) flows into the first stirring tank (4) and the second stirring tank (5), the first weighing sensor (11) and the second weighing sensor (14) monitor the mass reduction value in the corresponding storage tanks, the first flow sensor (12) and the second flow sensor (13) monitor the flow rate flowing into the corresponding stirring tanks, and after the set value is reached, the computer control system (10) controls the first, second, third and fourth electromagnetic valves (15, 17, 16, 18) to be closed;
step four: the computer control system (10) controls the first stirring tank (4) and the second stirring tank (5) to stir, and the stirring is stopped when the stirring is carried out for a set time;
step five: the computer control system (10) controls the fifth electromagnetic valve (21) to be opened and the sixth electromagnetic valve (22) to be closed, liquid drops drop from the 3D printing nozzle (6) to the freezing table (7) to be frozen, solidified and formed rapidly, the computer control system (10) controls the X-axis motor (23), the Y-axis motor (24) and the Z-axis motor (25) to drive the 3D printing nozzle (6) to print, a plurality of linear tracks which are mutually spaced are printed along one direction, and then a plurality of linear tracks which are mutually spaced are printed along the other direction again on the basis of the linear tracks to form a net-shaped first layer structure; then the computer control system (10) controls the fifth electromagnetic valve (21) to be closed and the sixth electromagnetic valve (22) to be opened, the second mesh layer is printed on the basis of the first mesh layer structure, then the computer control system (10) controls the fifth electromagnetic valve (21) to be opened and the sixth electromagnetic valve (22) to be closed, the third mesh layer structure is printed according to the same track, and the incremental multilayer structure is printed by analogy.
4. A method of processing as claimed in claim 3, wherein: after the fifth step, the computer control system (10) controls the fifth electromagnetic valve (21) and the sixth electromagnetic valve (22) to be closed, the material is transferred to a freeze dryer for freeze drying, and sintering is carried out after the drying is finished.
5. A method of processing as claimed in claim 3, wherein: in the first step, a three-dimensional model is constructed in the computer control system 10 according to the shape of the material, and the printing speed, the printing flow, the printing program, the stirring time, and the working modes and parameters of each sensor are set.
6. A method of processing as claimed in claim 3, wherein: in the first step, the powder raw material is solid powder, such as graphene and nano-alumina, and the solvent is a solvent capable of dispersing the solid powder, such as ethanol.
7. A method of processing as claimed in claim 3, wherein: the composite manufacturing of various different materials can be completed by adding an additional material storage box, an additional stirring tank, a corresponding electromagnetic valve and a corresponding sensor.
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