CN218557980U - A multi-functional silica gel 3D printer for accurate complex construction is printed - Google Patents
A multi-functional silica gel 3D printer for accurate complex construction is printed Download PDFInfo
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- CN218557980U CN218557980U CN202222716767.7U CN202222716767U CN218557980U CN 218557980 U CN218557980 U CN 218557980U CN 202222716767 U CN202222716767 U CN 202222716767U CN 218557980 U CN218557980 U CN 218557980U
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Abstract
The application discloses a multifunctional silica gel 3D printer for printing a precise complex structure, wherein a printing spray head module is provided with a plurality of spray heads, and the plurality of spray heads are used for printing different materials on a reference surface; the movement module bears the printing spray head module and is used for realizing the relative movement of the printing spray head module relative to a reference surface; the air pressure control module is connected with the printing spray head module through a pipeline and is used for controlling the discharge of the spray head through air pressure; the circuit control system is in communication connection with the motion module and the air pressure control module and is used for receiving and processing printing signals and controlling the motion module and the air pressure control module. Above-mentioned a multi-functional silica gel 3D printer for accurate complex construction is printed can realize printing of high accuracy complex construction, and it is excellent to print model shaping quality, and biocompatibility is good.
Description
Technical Field
The application relates to the technical field of 3D printing, in particular to a multifunctional silica gel 3D printer for printing of precise complex structures.
Background
3D printing technology has been well developed and applied in many aspects, such as manufacturing, medical treatment, academic, aerospace and military, etc., and 3D printing technology can be divided into: fused Deposition (FDM), stereolithography (SLA), selective Laser Sintering (SLS), digital Light Processing (DLP), and the like.
In the FDM process, the curing process of the printing material is reversible, and when one layer of material is printed on the substrate of the previous layer of material through heating, the two layers of material are heated and melted to a certain degree, so that better fusion is generated between the layers, and the bonding strength between the layers is increased. However, most of the processed 3D printing technologies are solid parts, and the processing methods for flexible parts and elastic parts (such as silicone) are few, and the current printing methods for flexible materials have the problems of large consumption of consumables, low printing efficiency and the like.
The traditional processing methods of liquid silica gel include injection molding and compression molding. In order to realize the rapid molding of liquid silica gel and the personalized manufacture of complex structures, the liquid silica gel is applied to the field of 3D printing. However, unlike the existing 3D printing technologies such as Fused Deposition Modeling (FDM), photocuring modeling (SLA, DLP, CLIP, or Polyjet), laser sintering modeling (SLS), and three-dimensional printing modeling (3 DP), which require different materials, liquid silicone is a thermosetting material, and is difficult to be hot-melt extruded and cooled by using the FDM technology like a thermoplastic material, and is also difficult to be processed by using the SLS or 3DP technology; the safety and physical properties of the silica gel material are obviously reduced due to the introduction of the photosensitive component into the liquid silica gel which is rapidly molded by using the photocuring process, so that the application of the silica gel material is limited. Thus, in recent years, researchers have proposed 3D printing of silicone using Direct Ink Writing (DIW).
The Direct Ink Writing (DIW) 3D printing technology can be used to prepare materials of various materials and properties, and has a wide range of applications including electromechanics, structural materials, tissue engineering, soft robots, and the like. The type of ink used in this technique is many, such as conductive silicone, elastomers, and hydrogels. These inks all have rheological properties (such as viscoelasticity, shear thinning, yield stress, etc.) that aid in the implementation of the 3D printing process. During the DIW process, viscoelastic ink is extruded from the nozzles of a 3D printer to form fibers that can be deposited in a specific pattern as the nozzles move.
Most present extrude formula silica gel 3D printer and can only realize the low accuracy of simple plane model and print, print mainly utilizing photocuring 3D printer to realize to the high accuracy of complex structure model. However, the photocuring of silica gel relies on photoinitiators, which are toxic chemicals, rendering the silica gel model biocompatible, which limits its application.
Therefore, how to provide a multifunctional silicone 3D printer for printing with precise and complex structures, which solves the above technical problems, is a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a multi-functional silica gel 3D printer for accurate complex construction is printed can realize printing of high accuracy complex construction, and it is excellent to print model shaping quality, and biocompatibility is good.
In order to realize above-mentioned purpose, this application provides a multi-functional silica gel 3D printer for accurate complex construction is printed, includes:
the printing nozzle module is provided with a plurality of nozzles, and the plurality of nozzles are used for printing different materials on a reference surface;
the movement module bears the printing spray head module and is used for realizing the relative movement of the printing spray head module relative to a reference surface;
the air pressure control module is connected with the printing spray head module through a pipeline and used for controlling the discharge of the spray head through air pressure; and
and the circuit control system is in communication connection with the motion module and the air pressure control module and is used for receiving and processing a printing signal so as to control the motion module and the air pressure control module.
In some embodiments, at least one of the plurality of nozzles is adapted to print a first modeling material and at least one of the plurality of nozzles is adapted to print a second modeling or support material.
In some embodiments, the number of spray heads is two;
wherein, a first spray head is used for printing a first model material, and a second spray head is used for printing a second model; or
The first spray head is used for printing a first model material, and the second spray head is used for printing a support material.
In some embodiments, the air pressure control module comprises an air source, the air source is connected with a proportional valve and a vacuum suck-back regulator, the proportional valve and the vacuum suck-back regulator are respectively connected to the inlets of a two-position three-way valve, and the outlets of the two-position three-way valve are connected with the two spray head pipelines.
In some embodiments, the gas source has a pressure of 0.5MPa to 2MPa, the vacuum suckback regulator has a pressure of-10 kPa to 0kPa, and the gas pressure control range is 0.005MPa to 0.9MPa.
In some embodiments, the spray head comprises a syringe, the interior of the syringe is used for containing materials for printing, the syringe is provided with the nozzle, and the syringe is arranged through a syringe clamp.
In some embodiments, the motion module comprises an X-axis motion component, a Y-axis motion component, and a Z-axis motion component;
the X-axis movement assembly is used for achieving relative movement of the printing spray head module along an X axis, the Y-axis movement assembly is used for achieving relative movement of the printing spray head module along a Y axis, and the Z-axis movement assembly is used for achieving relative movement of the printing spray head module along a Z axis.
In some embodiments, further comprising a base, the Y-axis motion component and the Z-axis motion component mounted to the base, the X-axis motion component mounted to the Z-axis motion component.
In some embodiments, the apparatus further comprises a print head holder, and the print head is mounted to the X-axis motion assembly by the print head holder.
In some embodiments, the nozzle is used to print a two-component silicone gel as a mold material.
Compared with the background technology, the multifunctional silica gel 3D printer for printing the precise complex structure comprises a printing spray head module, a movement module, an air pressure control module and a circuit control system; the printing nozzle module is provided with a plurality of nozzles, and the plurality of nozzles are used for printing different materials on the reference surface; the moving module bears the printing spray head module and is used for realizing the relative movement of the printing spray head module relative to the reference surface; the air pressure control module is connected with the printing spray head module through a pipeline and is used for controlling the discharge of the spray head through air pressure; the circuit control system is in communication connection with the motion module and the air pressure control module and is used for receiving and processing the printing signal so as to control the motion module and the air pressure control module.
In the printing process of the multifunctional silica gel 3D printer for printing the precise complex structure, the plurality of spray heads can respectively print different materials, and finally, the printing of a multi-material model is realized; the model body can be printed by one nozzle, and the supporting material can be printed by the other nozzle, so that the required silica gel model with high precision, complex structure and excellent surface quality can be obtained finally. To sum up, this a multi-functional silica gel 3D printer for accurate complex structure prints can realize the printing of high accuracy complex structure, and it is excellent to print model shaping quality, and biocompatibility is good.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a structural diagram of a multifunctional silica gel 3D printer for printing a precise complex structure according to an embodiment of the present application;
fig. 2 is a structural diagram of a print head module according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of an air pressure control module according to an embodiment of the present disclosure.
Wherein:
the device comprises a 1-X axis movement assembly, a 2-Y axis movement assembly, a 3-Z axis movement assembly, a 4-printing spray head module, a 5-air pressure control module, a 6-circuit control system, a 7-printing head support, an 8-needle cylinder and a 9-needle cylinder clamp.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.
Please refer to fig. 1 to fig. 3, wherein fig. 1 is a structural diagram of a multifunctional silica gel 3D printer for printing with a precise and complex structure according to an embodiment of the present application, fig. 2 is a structural diagram of a printing nozzle module according to an embodiment of the present application, and fig. 3 is a schematic diagram of an air pressure control module according to an embodiment of the present application.
In a first specific implementation mode, the application provides a multifunctional silica gel 3D printer for printing of a precise complex structure, which mainly comprises a printing nozzle module 4, a motion module, an air pressure control module 5 and a circuit control system 6, wherein the motion module bears the printing nozzle module 4, the air pressure control module 5 is connected with the printing nozzle module 4 through a pipeline, and the circuit control system 6 is in communication connection with the motion module and the air pressure control module 5.
In this embodiment, as shown in fig. 1, the motion module can implement the motion of the nozzle of the print nozzle module 4 in the three-dimensional space, taking printing a model on a reference surface as an example, the print nozzle module 4 and the reference surface generate relative motion under the action of the motion module, so as to meet the printing requirements on the reference surface and the three-dimensional space.
The air pressure control module 5 is communicated with the spray head of the printing spray head module 4, and the accurate and stable control of air pressure is realized through the discharge of the air pressure control spray head.
The circuit control system 6 has at least three functions, including signal processing, control of the motion module and control of the air pressure control module 5, and after receiving and processing the printing signal, the circuit control system 6 controls the motion module and the air pressure control module 5.
In addition, the print head module 4 is provided with a plurality of heads, and the number of the heads is not limited, and as long as the number of the heads is two or more, the print head module also belongs to the description range of the embodiment; it should be noted that a plurality of heads are used to print different materials on the reference surface, and different printing schemes are combined according to the different materials.
In the printing process of the multifunctional silica gel 3D printer for printing the precise complex structure, the plurality of nozzles can respectively print different materials, and finally, the printing of a multi-material model is realized; the model body can be printed by one nozzle, and the supporting material can be printed by the other nozzle, so that the required silica gel model with high precision, complex structure and excellent surface quality can be obtained.
When a multi-material three-dimensional model is sliced, the model needs to be segmented, then material designation is performed on each segmented model, and then the models are combined. And in the printing process, the plurality of spray heads respectively print different materials, and finally, the printing of the multi-material model is realized.
This a multi-functional silica gel 3D printer for accurate complex construction is printed can realize printing of high accuracy complex construction, and it is excellent to print model shaping quality, and biocompatibility is good.
In the first printing scheme, taking the number of the nozzles as an example, in the plurality of nozzles, at least one nozzle corresponds to the first model material, and in addition, at least one nozzle corresponds to the second model material, and at this time, the printing nozzle module 4 at least contains two different materials, so as to realize the printing of multiple materials, such as multicolor silica gel and conductive silica gel, and the like, and the invention also belongs to the description scope of the embodiment.
In the second printing scheme, the number of the nozzles is also taken as a plurality of examples, in the plurality of nozzles, at least one nozzle corresponds to the first model material, in addition, at least one nozzle corresponds to the support material, at this time, the printing nozzle module 4 is at least provided with one model material and one support material, the support material can be water-soluble colloid, and after the printing is finished, the water-soluble colloid is removed after being put into water, and finally, the required silica gel model with high precision, a complex structure and excellent surface quality is obtained.
In one embodiment, the number of nozzles is two.
In the first printing scheme, a first nozzle is used for printing a first model material, a second nozzle is used for printing a second model, and the printing nozzle module 4 at the moment is filled with two different materials, so that the printing of multiple materials is realized.
In the second printing scheme, the first nozzle is used for printing a first model material, the second nozzle is used for printing a supporting material, the printing nozzle module 4 is filled with the model material and the supporting material at the moment, and the supporting material is removed to obtain the required silica gel model with high precision, a complex structure and excellent surface quality.
In some embodiments, the nozzle is used to print a two-component silicone gel as a mold material.
In this embodiment, the silica gel used in the mold material is a two-component silica gel, which includes two components, a and B; silica gels need to meet specific viscosity and specific density values. Further, a proper proportion of thickening agent and diluting agent is added on the basis of the commercial silica gel to reach the viscosity and density value within a specific range.
Exemplarily, this a multi-functional silica gel 3D printer for accurate complex construction is specifically for being used for the multi-functional silica gel 3D printer of dual spray that accurate complex construction printed. There are at least two printing schemes:
firstly, the printing of a complex structure can be realized by double-nozzle printing, wherein one nozzle is used for printing a model body, and the other nozzle is used for printing a supporting material; a nozzle of the printing model body is filled with silica gel with fully mixed components A and B; the nozzle of the printing support material is filled with water-soluble colloid. After printing is finished, the silica gel mixed with the component A and the component B is solidified, and the water-soluble colloid is removed after being put into water, so that the silica gel model with high precision, complex structure and excellent surface quality is obtained;
and secondly, when two nozzles are respectively provided with different materials, multi-material printing can be realized, and the printing comprises multicolor silica gel, conductive silica gel and the like.
In some embodiments, as shown in fig. 3, the air pressure control module 5 includes an air source connected to a proportional valve and a vacuum suck-back regulator, the proportional valve and the vacuum suck-back regulator are respectively connected to the inlets of the two-position three-way valve, and the outlets of the two-position three-way valve are connected to the two shower nozzles.
In this embodiment, the air supply is used to continuously provide air pressure, which provides air pressure to the proportional valve and the vacuum suckback regulator; the proportional valve is used for controlling and outputting adjustable stable air pressure; the vacuum back suction regulator is used for generating negative pressure, and the negative pressure can suck the silica gel back at the moment of stopping printing so as to prevent the silica gel from flowing out; the stable air pressure generated by the proportional valve and the negative pressure generated by the vacuum suck-back regulator are respectively connected to two inlets of the two-position three-way valve, wherein the negative pressure is connected to a normally open inlet of the two-position three-way valve, and the stable positive pressure generated by the proportional valve is connected to a normally closed inlet of the two-position three-way valve; the two-position three-way valve is used for controlling the pressure provided to the needle cylinder of the spray head to be positive pressure or negative pressure, the outlet of the two-position three-way valve is communicated with the needle cylinder of the spray head, the positive pressure pushes the silica gel to be extruded out of the needle cylinder, and the negative pressure enables the silica gel to stop flowing out.
Illustratively, the pressure of the air source is 0.5MPa to 2MPa, the pressure of the vacuum back suction regulator is-10 kPa to 0kPa, and the air pressure control range is 0.005MPa to 0.9MPa.
In some embodiments, the spray head comprises a syringe 8, the interior of the syringe 8 is used for containing materials for printing, the syringe 8 is provided with a nozzle, and the syringe 8 is arranged through a syringe clamp 9.
In this embodiment, the two nozzles have the same structure, and each of the two nozzles includes a syringe 8 and a syringe holder 9, but the two syringes 8 are filled with different printing materials; the needle cylinder 8 is used for containing silica gel to be printed; the syringe clamp 9 is used to fix the positioning of the syringe 8 and the nozzle tip, and its structural features include a nozzle contour structure and a set screw fastening structure.
Illustratively, the inner diameter of the nozzle of the silica gel spray head is 0.1mm-1mm, the diameter of the silica gel fiber subjected to glue dispensing is 0.05mm-1.5mm, and the printing speed of the spray head is 0.5mm/s-100mm/s.
In some embodiments, the motion module comprises an X-axis motion assembly 1, a Y-axis motion assembly 2, and a Z-axis motion assembly 3; the X-axis movement assembly 1 is used for realizing the relative movement of the printing nozzle module 4 along the X axis, the Y-axis movement assembly 2 is used for realizing the relative movement of the printing nozzle module 4 along the Y axis, and the Z-axis movement assembly 3 is used for realizing the relative movement of the printing nozzle module 4 along the Z axis.
It should be noted that the form of the motion module is not exclusive, for example: the X-axis moving component 1 drives the printing spray head to do linear motion in the X-axis direction in the three-dimensional space, the Y-axis moving component 2 drives the printing spray head to do linear motion in the Y-axis direction in the three-dimensional space, and the Z-axis moving component 3 drives the printing spray head to do linear motion in the Z-axis direction in the three-dimensional space; the movement of the reference surface can also be realized, and the relative movement of the spray head and the reference surface is further realized.
Illustratively, as shown in fig. 1, the device further comprises a base, wherein the Y-axis motion assembly 2 and the Z-axis motion assembly 3 are mounted on the base, and the X-axis motion assembly 1 is mounted on the Z-axis motion assembly 3.
In this embodiment, the Z-axis moving assemblies 3 are a pair, the fixed ends of the Z-axis moving assemblies 3 are fixed relative to the base, the fixed ends of the X-axis moving assemblies 1 are fixed relative to the moving ends of the Z-axis moving assemblies 3, and the moving ends of the X-axis moving assemblies 1 are fixed with the printing nozzle modules 4; thereby realizing that: the X-axis moving assembly 1 and the printing nozzle module 4 move along the Z axis under the action of the Z-axis moving assembly 3, and the printing nozzle module 4 moves along the X axis under the action of the X-axis moving assembly 1.
In addition, the fixed end of the Y-axis motion component 2 is fixed relative to the base, and the motion end of the Y-axis motion component 2 is fixed with a reference surface.
In some embodiments, a print head holder 7 is also included, and the print head is mounted to the X-axis motion assembly 1 by the print head holder 7.
In the present embodiment, the print head holder 7 is used to fix the print head module 4 to the X-axis of the motion module; the number of the nozzles of the printing nozzle module 4 is two, and the nozzles respectively stay at two ends of the X-axis movement assembly 1 in an unprinted state.
In some embodiments, the control of the motion module requires to obtain printing parameters according to the required 3D printed product, and the circuit control system 6 drives the motor of the motion module to rotate according to the parameters, so as to implement three-axis linkage motion; the signal processing is mainly to process the printing signal generated by the main control board in the auxiliary control board to form a stable and continuous signal, and the signal is used for the state conversion of the two-position three-way valve; the control of the proportional valve mainly comprises the steps of inputting the required glue outlet air pressure on a man-machine interaction display screen interface, and transmitting the data to the proportional valve after the data is processed by the control board so as to adjust the air pressure to the set air pressure value.
In some embodiments, the steps of the present application are dispensing, model slicing, printing and curing, and the details of each step are as follows:
example 1
20g of silica gel Part A and 2g of silica gel Part B are mixed in a stirring container, and the stirring container is placed in a vacuum stirrer to uniformly mix the two-component silica gel. The vacuum stirrer was set at 2000 revolutions, an air pressure of 0.1kpa, and a stirring time of 30 seconds. The well mixed silica gel was then poured into a 10 ml syringe. The injector is a screw-mouth syringe, and the outlet of the syringe is blocked by using a screw-mouth plug after the syringe is filled. Because the silica gel has high viscosity, bubbles are easily formed in the syringe, and the syringe filled with the silica gel needs to be filled into a vacuum stirrer for centrifugal defoaming treatment. The vacuum stirrer is set to rotate at 2000 r, the air pressure is normal pressure and the stirring time is 2 minutes. After the first centrifugal defoaming treatment, the tail part of the needle cylinder has more filling space, and then the material is supplemented to the needle cylinder until the needle cylinder is filled. Wiping the syringe completely and then carrying out secondary centrifugal defoaming treatment. The vacuum stirrer is set to rotate at 2000 revolutions and to be at normal pressure for 4 minutes. Aligning the needle cylinder to a light source, taking down the screw plug of the needle cylinder after observing that the silica gel in the injector has no bubbles, connecting a nozzle with the inner diameter of 100 mu m, and plugging the rear plug of the needle cylinder into the needle cylinder. And a proper amount of allowance is left at the tail part of the syringe, so that the adapter of the dispensing syringe can be plugged in. And (5) mounting and fixing the needle cylinder which is filled with the materials on a needle cylinder clamp.
The method comprises the steps of designing a three-dimensional model to be printed by using three-dimensional modeling software, storing the three-dimensional model into a file format of STL, opening the STL model file in three-dimensional slicing software, inputting slicing information into a printing control system, and enabling a printing nozzle to move according to a designed track and speed.
And starting a printing device, selecting the size of the printed air pressure value on a display screen interface of human-computer interaction, and selecting the STL model file to be printed for printing. The machine automatically completes printing of the entire model. And curing and molding the silica gel at room temperature after printing to obtain the required model. This example is the unsupported printing of complex structures using only single jet printing.
Example 2
10g of silica gel Part A and 1g of silica gel Part B are mixed in a stirring vessel, and the stirring vessel is placed in a vacuum stirrer to uniformly mix the two-component silica gel. The well mixed silica gel was then poured into a 10 ml syringe. The injector is a screw-mouth syringe, and the outlet of the syringe is blocked by using a screw-mouth plug after the syringe is filled. Because silica gel has high viscosity, bubbles are easily formed in the syringe, and the syringe filled with the silica gel needs to be filled into a vacuum stirrer for centrifugal defoaming treatment. After the first centrifugal defoaming treatment, the tail part of the needle cylinder has more filling space, and then the material is supplemented to the needle cylinder until the needle cylinder is filled. Wiping the syringe completely and then carrying out secondary centrifugal defoaming treatment. Aligning the needle cylinder to a light source, taking down the screw plug of the needle cylinder after observing that the silica gel in the injector has no bubbles, connecting a nozzle with the inner diameter of 100 mu m, and plugging the rear plug of the needle cylinder into the needle cylinder. And a proper amount of allowance is left at the tail part of the syringe, so that the adhesive dispensing syringe adapter can be plugged into the syringe. And (3) installing and fixing the loaded needle cylinder on a needle cylinder clamp of the left-end printing spray head module, and connecting an air pipe to complete preparation of printing the model material.
10g of silica gel Part A are poured into a 10 ml syringe. This example uses one-component silicone gel as the support material, so it does not cure. The injector is a screw-mouth syringe, and the outlet of the syringe is blocked by using a screw-mouth plug after the syringe is filled. Because silica gel has high viscosity, bubbles are easily formed in the syringe, and the syringe filled with the silica gel needs to be filled into a vacuum stirrer for centrifugal defoaming treatment. After the first centrifugal defoaming treatment, the tail part of the needle cylinder has more filling space, and then the material is supplemented to the needle cylinder until the needle cylinder is filled. Wiping the syringe completely and then carrying out secondary centrifugal defoaming treatment. Aligning the syringe to the light source, observing that the silica gel in the injector has no bubbles, taking down the screw plug of the syringe, connecting a nozzle with the inner diameter of 100um, and plugging the rear plug of the syringe into the syringe. And a proper amount of allowance is left at the tail part of the needle cylinder, so that the needle cylinder can be plugged into the adhesive dispensing needle cylinder adapter. And (4) mounting and fixing the loaded needle cylinder on the right-end printing spray head module needle cylinder clamp to complete preparation of the supporting material.
The method comprises the steps of designing a three-dimensional model to be printed by using three-dimensional modeling software, storing the three-dimensional model into an STL file format, opening the STL model file in three-dimensional slicing software, inputting slicing information into a printing control system, and enabling a printing spray head to move according to a designed track and speed.
And starting a printing device, respectively selecting the air pressure values printed by the two nozzles on a man-machine interaction display screen interface, and selecting the STL model file to be printed for printing. The machine automatically completes printing of the entire model. And curing and molding the silica gel at room temperature after printing to obtain the required model. This example is the use of dual nozzles to print complex structural models, where one nozzle is used to print the model material and one nozzle is used to print the support material.
Example 3
10g of silica gel Part A and 1g of silica gel Part B are mixed in a stirring container, and the stirring container is placed in a vacuum stirrer to be uniformly mixed. The well mixed silica gel was then poured into a 10 ml syringe. The injector is a screw-mouth syringe, and the outlet of the syringe is blocked by using a screw-mouth plug after the syringe is filled. Because the silica gel has high viscosity, bubbles are easily formed in the syringe, and the syringe filled with the silica gel needs to be filled into a vacuum stirrer for centrifugal defoaming treatment. After the first centrifugal defoaming treatment, the tail part of the needle cylinder has more filling space, and then the material is supplemented to the needle cylinder until the needle cylinder is filled. Wiping the syringe completely and then carrying out secondary centrifugal defoaming treatment. Aligning the syringe to the light source, observing that the silica gel in the injector has no bubbles, taking down the screw plug of the syringe, connecting a nozzle with the inner diameter of 100um, and plugging the rear plug of the syringe into the syringe. And a proper amount of allowance is left at the tail part of the needle cylinder, so that the needle cylinder can be plugged into the adhesive dispensing needle cylinder adapter. And (3) mounting and fixing the loaded needle cylinder on a needle cylinder clamp of the left-end printing spray head module, and connecting an air pipe to complete preparation of the common silica gel material.
10g of silica gel Part A, 10g of silica gel Part B, 2g of carbon powder particles and 2g of diluent are mixed in a stirring container, and the stirring container is put into a vacuum stirrer to be uniformly mixed. The well mixed silica gel was then poured into a 10 ml syringe. The injector is a screw-type needle cylinder, and the outlet of the needle cylinder is blocked by a screw plug after the material is loaded. Because silica gel has high viscosity, bubbles are easily formed in the syringe, and the syringe filled with the silica gel needs to be filled into a vacuum stirrer for centrifugal defoaming treatment. After the first centrifugal defoaming treatment, the tail part of the needle cylinder has more filling space, and then the material is supplemented to the needle cylinder until the needle cylinder is filled. Wiping the syringe and then carrying out secondary centrifugal defoaming treatment. Aligning the syringe to the light source, observing that the silica gel in the injector has no bubbles, taking down the screw plug of the syringe, connecting a nozzle with the inner diameter of 100um, and plugging the rear plug of the syringe into the syringe. And a proper amount of allowance is left at the tail part of the needle cylinder, so that the needle cylinder can be plugged into the adhesive dispensing needle cylinder adapter. And (3) mounting and fixing the loaded needle cylinder on a needle cylinder clamp of the left-end printing spray head module, and connecting an air pipe to complete preparation of the conductive silica gel material.
The method comprises the steps of designing a three-dimensional model to be printed by using three-dimensional modeling software, storing the three-dimensional model into an STL file format, opening the STL model file in three-dimensional slicing software, dividing the model when the multi-material three-dimensional model is sliced, carrying out spray head designation on each divided model, combining the models, inputting slicing information into a printing control system, and enabling a printing spray head to move according to a designed track and speed.
And starting a printing device, respectively selecting the air pressure values printed by the two nozzles on a man-machine interaction display screen interface, and selecting the STL model file to be printed for printing. The machine automatically completes printing of the entire model. And curing and molding the silica gel at room temperature after printing to obtain the required model. This example is a model of a multi-material structure printed using dual jets, one for the model material and one for the conductive material.
It should be noted that many of the components mentioned in this application are either common standard components or components known to those skilled in the art, and their structure and principle are known to those skilled in the art through technical manuals or through routine experimentation.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The multifunctional silica gel 3D printer for printing the precise complex structure provided by the application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. The utility model provides a multi-functional silica gel 3D printer for accurate complex construction is printed which characterized in that includes:
the printing spray head module (4) is provided with a plurality of spray heads, and the plurality of spray heads are used for printing different materials on a reference surface;
the moving module bears the printing spray head module (4) and is used for realizing the relative movement of the printing spray head module (4) relative to a reference surface;
the air pressure control module (5) is connected with the printing spray head module (4) through a pipeline and is used for controlling the discharge of the spray head through air pressure; and
and the circuit control system (6) is in communication connection with the motion module and the air pressure control module (5) and is used for receiving and processing a printing signal so as to realize the control of the motion module and the air pressure control module (5).
2. The multifunctional silica gel 3D printer for printing precise and complex structures as claimed in claim 1, wherein among the plurality of nozzles, there is at least one nozzle for printing a first model material and at least one nozzle for printing a second model material or a support material.
3. The multifunctional silica gel 3D printer for printing the precise and complex structure according to claim 2, wherein the number of the spray heads is two;
wherein, a first spray head is used for printing a first model material, and a second spray head is used for printing a second model; or
The first nozzle is used for printing a first model material, and the second nozzle is used for printing a supporting material.
4. The multifunctional silica gel 3D printer for printing precise and complex structures according to claim 3, wherein the air pressure control module (5) comprises an air source, the air source is connected with a proportional valve and a vacuum suck-back regulator, the proportional valve and the vacuum suck-back regulator are respectively connected to inlets of a two-position three-way valve, and outlets of the two-position three-way valve are connected with the two spray head pipelines.
5. The multifunctional silica gel 3D printer for printing the precise and complex structure according to claim 4, wherein the pressure of the air source is 0.5MPa to 2MPa, the pressure of the vacuum suck-back regulator is-10 kPa to 0kPa, and the air pressure control range is 0.005MPa to 0.9MPa.
6. The multifunctional silica gel 3D printer for printing of precise and complex structures according to any one of claims 1 to 5, wherein the spray head comprises a cylinder (8), the inside of the cylinder (8) is used for containing materials for printing, the cylinder (8) is provided with a nozzle, and the cylinder (8) is installed through a cylinder clamp (9).
7. The multifunctional silica gel 3D printer for printing precise complex structures according to any one of claims 1 to 5, characterized in that the motion module comprises an X-axis motion component (1), a Y-axis motion component (2) and a Z-axis motion component (3);
the X-axis movement assembly (1) is used for achieving relative movement of the printing spray head module (4) along an X axis, the Y-axis movement assembly (2) is used for achieving relative movement of the printing spray head module (4) along a Y axis, and the Z-axis movement assembly (3) is used for achieving relative movement of the printing spray head module (4) along a Z axis.
8. The multifunctional silica gel 3D printer for precise and complex structure printing according to claim 7, further comprising a base, wherein the Y-axis motion assembly (2) and the Z-axis motion assembly (3) are installed on the base, and the X-axis motion assembly (1) is installed on the Z-axis motion assembly (3).
9. The multifunctional silica gel 3D printer for precise and complex structure printing according to claim 8, further comprising a printing head support (7), wherein the spraying head is mounted on the X-axis motion assembly (1) through the printing head support (7).
10. The multifunctional silica gel 3D printer for printing the precise and complex structure according to any one of claims 2 to 4, wherein the nozzle is used for printing the bi-component silica gel as the model material.
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