CN114536507A - Photocuring jet forming device based on ceramic material and printing method - Google Patents
Photocuring jet forming device based on ceramic material and printing method Download PDFInfo
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- CN114536507A CN114536507A CN202210253438.5A CN202210253438A CN114536507A CN 114536507 A CN114536507 A CN 114536507A CN 202210253438 A CN202210253438 A CN 202210253438A CN 114536507 A CN114536507 A CN 114536507A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
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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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention discloses a photocuring jet forming device based on ceramic materials, which comprises a photocuring mechanism, an ink-jet structure and a lifting mechanism, wherein the photocuring mechanism comprises an ultraviolet lamp fixing disc, an ultraviolet curing lamp and a light modulator, the ink-jet mechanism comprises an ink box, an ink path, an auxiliary ink box and an ink-jet printing head, the lifting mechanism comprises a material groove, a lifting table and a base, the photocuring mechanism is positioned at the discharge end of the ink-jet mechanism and used for curing ceramic ink, and the lifting mechanism is positioned at the lower end of the ink-jet mechanism and used for printing and forming layer by layer, the formed green body has higher density after sintering.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a photocuring jet forming device and a printing method based on a ceramic material.
Background
Since the inventor in the United states Hull used a stereolithography technique for the first time in 1986, small-scale production of precision parts, product models and molds was performed. In 1988, Cromp developed a fused deposition modeling technique. In 1989, the university of texas, Dechard, usa, successfully developed a 3D printing technique using a powdered material for laser sintering. At present, the following ceramic 3D printing technologies are common: photocuring forming technology, fused deposition forming technology, laminated solid manufacturing technology, selective laser sintering technology, ink-jet printing technology and the like.
The light curing molding technology realizes curing molding from line to surface by scanning points and lines through laser. The photocuring molding technology is a mature technology at present, is suitable for printing ceramic parts with complex structures and high precision, but has the problems of low printing speed, small printing size and high cost faced by SLA manufacturing.
The fused deposition forming technology is to lead in the wire material through rolling, heat, melt and extrude the wire material, and then cool, solidify and form the wire material. The FDM can realize the compounding of various materials, has wide application range, has requirements on the hot melting of raw materials due to melting and condensation, and has lower printing precision.
The laminated solid body manufacturing technology directly cuts the film material through laser and is bonded and molded under the action of a thermal bonding agent. LOM is fast to form, does not require support structures, but the laminated solid fabrication technique is not suitable for printing complex, hollow parts and is costly.
The selective laser sintering technology is to form a layered structure by melting the binder in the powder through laser scanning, and then to realize printing and forming through layer-by-layer solidification and bonding. The SLS process is simple and does not need to be supported, the selection range of forming materials is wide, but the cost of using laser is high, and the later maintenance is complicated.
The ink jet printing technique is to spray a binder onto the paved powder areas, bond the powder to form a single layer, and then repeat each layer until the entire part is molded. The IJP technology is simple to operate, components of a ceramic blank can be controlled, but the development of the IJP technology is limited by slow development of the blank strength and low printing efficiency.
Disclosure of Invention
The invention provides a photocuring spray forming device and a printing method based on a ceramic material, which are characterized in that ceramic ink with high solid content is modulated, the ceramic ink is quickly cured by using a light source of an ultraviolet curing lamp, a lifting table is controlled to print layer by layer, and a high-precision ceramic blank is finally obtained.
In order to achieve the purpose, the invention provides the following technical scheme: a photocuring jet forming device based on ceramic materials comprises a lifting mechanism, an ink jet mechanism and a photocuring mechanism, wherein the photocuring mechanism is positioned at the discharge end of the ink jet mechanism and used for curing ceramic ink, and the lifting mechanism is positioned at the lower end of the ink jet mechanism and used for printing and forming layer by layer;
the lifting mechanism comprises a material groove, a lifting platform and a base, the base is positioned at the bottommost layer of the device, the lifting platform is positioned at the lower end of the base, the material groove is positioned at the upper end of the base, the lifting platform is positioned at the lower end of the base, and the lifting platform controls the material groove to move up and down smoothly;
the ink-jet mechanism comprises an ink box, an ink path, auxiliary ink and an ink-jet printing head, wherein the ink-jet printing head is positioned at the upper end of the base, the position, right below the ink-jet printing head, of the upper end of the trough is corresponding to the position, a printing head support is arranged on the outer wall of the ink-jet printing head and used for supporting the ink-jet printing head, the ink box is positioned on one side of the auxiliary ink, the ink box is connected with the auxiliary ink through the ink path, the auxiliary ink is positioned at the upper end of the ink-jet printing head, the interior of the auxiliary ink is mutually connected with the ink-jet printing head on the printing head support, and the ink-jet printing head is used for jetting ceramic particle ink;
photocuring mechanism includes ultraviolet lamp fixed disk, ultraviolet curing lamp and light modulator, the ultraviolet lamp fixed disk is located print head support lower extreme, just ultraviolet lamp fixed disk upper end with print head support lower extreme surface and link to each other, the ultraviolet curing lamp is vertical to be located downwards ultraviolet lamp fixed disk is inboard, just ultraviolet curing lamp centers on the outer wall is beaten to the inkjet, the light modulator is located ultraviolet lamp fixed disk one side, and through the electricity connect with ultraviolet curing lamp links to each other, light modulator control ultraviolet curing lamp's on-off time and light intensity, ultraviolet curing lamp light shines on ceramic ink, makes its solidification take shape.
Preferably, a negative pressure sensor and a liquid level sensor are installed in the sub ink.
Preferably, the ink jet printing head is of a droplet piezoelectric type, the number of the holes formed in the ink jet printing head ranges from 100 to 1000, a droplet jetting effect is formed, the ink jet printing head is prevented from being blocked, each layer can be printed quickly, and curing is performed in a better matching mode with an ultraviolet curing lamp.
The invention also provides a printing method of the photocuring jet forming device based on the ceramic material, which comprises the following steps:
s1, preparing ink and modeling, adding an ink regulator into the ceramic powder, wherein the ink regulator comprises an active agent and a dispersing agent, the active agent can effectively reduce agglomeration among the powder, the ceramic particles in the ink are prevented from being adhered to each other when the content of the ceramic particles is increased, the dispersing agent enables the ceramic powder to be uniformly dispersed in the ink, the prepared ceramic ink is ensured to be uniform and stable in property, adding photosensitive resin into the ceramic ink and uniformly mixing, then adding a photoinitiator into the uniformly mixed ink, uniformly mixing to obtain ceramic photocuring ink, preparing the ceramic photocuring ink containing the ceramic powder, the ink regulator and the photosensitive resin, adding the prepared ceramic photocuring ink into a 3D printer ink box, dividing the ceramic photocuring ink into a plurality of layers of two-dimensional figures by using software according to the three-dimensional shape of a printed part, namely slicing the model of the part, generating slice information; designing a printing path according to each layer of graph, planning a starting position and a terminal position, and setting the switching time of the ultraviolet curing lamp; designing layer height and printing rate parameters according to the size of the printed part, and simulating a printing process;
s2, printing and curing, namely adding ceramic light-cured ink into the trough, adopting a droplet jetting mode, jetting the ceramic ink by the ink-jet printing head, synchronously starting the ultraviolet curing lamp, enabling the ink-jet printing head to run the first layer of the graph, moving along the printing path while curing the ink by the ultraviolet curing lamp until the current layer is printed, closing the ultraviolet curing lamp and the ink-jet printing head, and controlling the trough to descend by the lifting platform to continuously print the next layer;
s3, repeating the operation layer by layer according to the second step until the last layer of light curing is finished, and forming the 3D part;
and S4, taking out the formed blank, and carrying out degreasing and sintering treatment to obtain the final ceramic forming body.
Preferably, in S1, the volume fraction of the ceramic powder in the ink is 40 vol% to 70vo 1%, the particle size range of the ceramic powder is 0.01 μm to 20 μm, the uniform and small particle size distribution can ensure that no agglomeration occurs during the mixing process, no blocking occurs in the inkjet printing head during the printing process, the ceramic powder accounts for 70% to 90% of the specific gravity of the ink in order to effectively ensure the mechanical properties and chemical properties of the printed molded body, and the content of the photosensitive resin accounts for 10% to 30% of the specific gravity of the ink in order to ensure the effective curing of each layer of the molded body.
Preferably, the spraying speed of the ceramic ink is 1-500 m/s, the temperature in the forming cavity is controlled to be 20-50 ℃, the ultraviolet curing lamp is used for synchronously curing the sprayed ink, and then the ink is printed and formed layer by layer.
Preferably, in S4, the sintering temperature of the green body is 900 to 1500 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the additive manufacturing method, the characteristic of high forming precision of the prepared ceramic photocuring ink is utilized, and a mode of printing ink and photocuring is used at the same time, so that the high-precision and high-speed additive manufacturing method for printing the ceramic material is obtained, the ceramic photocuring ink with the solid content of 40 vol% -70 vo 1% can be uniformly and continuously subjected to additive manufacturing, the dependence of ceramic on a mold is avoided, and the forming precision is improved.
2. According to the invention, the ceramic part with high density and high performance can be formed, the prepared ceramic part has high solid content, high forming precision and high slurry utilization rate, and the formed blank has high density after sintering.
3. In the invention, the ink which can be used by an industrial 3D ink-jet printer is prepared by utilizing ceramic powder, photosensitive resin, an ink regulator and the like, and the blank printed by the method has very high precision.
4. In the invention, the ink jet printing head is provided with 100 to 1000 holes, the forming speed is high, and the forming failure caused by the blockage of the jet head is avoided.
5. In the forming process, the lifting table and the light modulator are controlled through software, integrated printing and forming are achieved, errors caused by step-by-step operation are avoided, meanwhile, the ultraviolet light source is used, laser scanning is avoided, and cost is reduced.
6. According to the invention, large-size ceramic parts can be printed, and the common ceramic 3D printing finished product has a small size, so that a quick and effective solution is provided for manufacturing of the large-size parts in various fields.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of a photo-curing injection molding apparatus according to the present invention;
the reference numbers in the figures: 1. an ink cartridge; 2. an ink path; 3. sub ink; 4. an inkjet print head; 5. a print head holder; 6. an ultraviolet lamp fixing disc; 7. an ultraviolet curing lamp; 8. a dimmer; 9. a trough; 10. a lifting platform; 11. a base.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
As shown in fig. 1, a photocuring jet forming device based on a ceramic material includes a lifting mechanism, an ink jet mechanism and a photocuring mechanism, wherein the photocuring mechanism is located at a discharge end of the ink jet mechanism and is used for curing ceramic ink, and the lifting mechanism is located at a lower end of the ink jet mechanism and is used for printing and forming layer by layer; the lifting mechanism comprises a material groove 9, a lifting platform 10 and a base 11, the base 11 is positioned at the bottommost layer of the device, the lifting platform 10 is positioned at the lower end of the base 11, the material groove 9 is positioned at the upper end of the base 11, the lifting platform 10 is positioned at the lower end of the base 11, and the lifting platform 10 controls the material groove 9 to move up and down smoothly; the ink jet mechanism comprises an ink box 1, an ink path 2, auxiliary ink 3 and an ink jet printing head 4, wherein the ink jet printing head 4 is positioned at the upper end of the base 11, the position under the ink jet printing head 4 corresponds to the upper end of the trough 9, the ink jet printing head 4 is of a droplet piezoelectric type, the number of holes arranged on the ink jet printing head 4 is 100-1000, a droplet ejection effect is formed, the ink jet printing head 4 is prevented from being blocked, each layer can be rapidly printed, the curing is better matched with an ultraviolet curing lamp 7, the outer wall of the ink jet printing head 4 is provided with a printing head bracket 5, the printing head bracket 5 is used for supporting the ink jet printing head 4, the ink box 1 is positioned at one side of the auxiliary ink 3, the ink box 1 is connected with the auxiliary ink 3 through the ink path 2, the auxiliary ink 3 is positioned at the upper end of the ink jet printing head 4, the inner part of the auxiliary ink 3 is mutually connected with the ink jet printing head 4 on the printing head bracket 5, a negative pressure sensor and a liquid level sensor are arranged in the auxiliary ink 3, and the ink-jet printing head 4 is used for jetting ceramic particle ink; photocuring mechanism includes ultraviolet lamp fixed disk 6, ultraviolet curing lamp and light modulator 8, ultraviolet lamp fixed disk 6 is located print head support 5 lower extreme, just ultraviolet lamp fixed disk upper end with print head support 5 lower extreme surface and link to each other, 7 vertical downwardly positioned of ultraviolet curing lamp 6 inboards, just ultraviolet curing lamp 7 centers on 4 outer walls are beaten to the inkjet, light modulator 8 is located 6 one side of ultraviolet lamp fixed disk, and through the electricity connect with ultraviolet curing lamp 7 links to each other, light modulator 8 control the on-off time and the light intensity of ultraviolet curing lamp 7, ultraviolet curing lamp light shines on ceramic ink, makes its solidification take shape.
The invention also provides a printing method of the photocuring jet forming device based on the ceramic material, which comprises the following steps:
s1, preparing ink and modeling, adding an ink regulator into ceramic powder, wherein the ink regulator comprises an active agent and a dispersing agent, the active agent can effectively reduce agglomeration among the powder, the ceramic powder cannot be adhered to each other when the content of ceramic particles in the ink is increased, the dispersing agent enables the ceramic powder to be uniformly dispersed in the ink, the prepared ceramic ink is uniform and stable in property, adding photosensitive resin into the ceramic ink and uniformly mixing, then adding a photoinitiator into the uniformly mixed ink, uniformly mixing to obtain ceramic photocuring ink, preparing the ceramic photocuring ink containing the ceramic powder, the ink regulator and the photosensitive resin, wherein the volume fraction of the ceramic powder in the ink is 40-70 vo 1%, the particle size range of the ceramic powder is 0.01-20 mu m, and the uniform and small particle size distribution can ensure that no agglomeration occurs in the mixing process, the method comprises the following steps that in the printing process, an ink-jet printing head 4 cannot be blocked, in order to effectively ensure the mechanical property and the chemical property of a printed forming body, ceramic powder accounts for 70% -90% of the ink in proportion, in order to ensure the effective curing of each layer of the forming body, the content of photosensitive resin accounts for 10% -30% of the ink in proportion, the prepared ceramic light-cured ink is added into a 3D printer ink box 1, the ceramic light-cured ink is divided into a plurality of layers of two-dimensional graphs by using software according to the three-dimensional shape of a printed part, namely, a model of the part is sliced, and slicing information is generated; designing a printing path according to each layer of graph, planning a starting position and a terminal position, and setting the switching time of the ultraviolet curing lamp 7; designing layer height and printing rate parameters according to the size of the printed part, and simulating a printing process;
s2, printing and curing, namely adding ceramic light-cured ink into a trough 9, adopting a droplet jetting mode, jetting the ceramic ink by an ink-jet printing head 4, synchronously starting an ultraviolet curing lamp 7, enabling the ink-jet printing head 4 to run a first layer of a graph, moving along a printing path while curing the ink by the ultraviolet curing lamp 7 until the current layer is printed, closing the ultraviolet curing lamp 7 and the ink-jet printing head 4, controlling the trough 9 to descend by a lifting platform 10, continuously printing the next layer, controlling the ceramic ink jetting speed to be 1-500 m/S, controlling the temperature in a forming cavity to be 20-50 ℃, synchronously curing the jetted ink by the ultraviolet curing lamp 7, and then printing and forming layer by layer;
s3, repeating the operation layer by layer according to the second step until the last layer of light curing is finished, and forming the 3D part;
and S4, taking out the formed blank, degreasing and sintering the blank, wherein the sintering temperature of the blank is 900-1500 ℃, and obtaining the final ceramic forming body.
The first embodiment is as follows:
and uniformly mixing ceramic powder with the particle size of 1-20 mu m, photosensitive resin and an ink regulator to obtain the ceramic ink. Wherein, 86 percent of ceramic powder, 10 percent of photosensitive resin and 4 percent of ink regulator are mixed to prepare the ceramic photo-curing ink.
Designing a cylindrical part model, slicing and layering by using software, planning the printing path of each layer and the switching time of the ultraviolet curing lamp 7, and setting the ink spraying speed of the ink-jet printing head 4 to be 500m/s and the temperature of a forming cavity to be 40 ℃.
And (3) starting ink jetting, jetting ceramic ink by the ink-jet printing head 4, simultaneously starting the light source of the ultraviolet curing lamp 7, photocuring the ink along the printing route of the ink-jet printing head 4, monitoring the temperature of a curing area in real time by the temperature sensor, confirming that curing is finished, after the ink in the printing area is cured and formed, closing the light source of the ultraviolet curing lamp 7, moving the platform down one layer for each layer, printing layer by layer according to the mode, curing layer by layer, and determining that the last layer is successfully cured to obtain the cylindrical ceramic blank.
Degreasing and sintering at 1250 deg.C to obtain final part with average hardness of 85HV and hardness 50-60HV superior to that of common casting with the same components.
The second embodiment is as follows:
mixing ceramic powder with the particle size of 0.01-1 mu m, photosensitive resin and an ink regulator to form ceramic ink. Wherein, the ceramic photo-curing ink is prepared by mixing 72 percent of glass powder, 25 percent of photosensitive resin and 3 percent of ink regulator.
Designing a cube part model, slicing and layering by using software, planning a printing path of each layer and the switching time of the ultraviolet curing lamp 7, and setting the ink spraying speed of the ink-jet printing head 4 to be 5m/s and the temperature of a molding cavity to be 50 ℃.
And (3) starting ink jetting, wherein the ink-jet printing head 4 jets ceramic ink, the light source of the ultraviolet curing lamp 7 is started, the ink is cured along the printing route of the ink-jet printing head 4, the temperature sensor monitors the temperature of a curing area in real time, the curing is confirmed to be finished, after the ink in the printing area is cured and formed, the light source of the ultraviolet curing lamp 7 is turned off, each layer is cured, the platform moves downwards one layer, the layers are printed layer by layer and cured layer by layer in the above mode, and the last layer is determined to be successfully cured, so that the cube ceramic blank is obtained.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A photocuring injection molding device based on ceramic material is characterized in that: the ceramic ink solidifying device comprises a lifting mechanism, an ink jet mechanism and a light solidifying mechanism, wherein the light solidifying mechanism is positioned at the discharge end of the ink jet mechanism and is used for solidifying the ceramic ink, and the lifting mechanism is positioned at the lower end of the ink jet mechanism and is used for printing and forming layer by layer;
the lifting mechanism comprises a material groove, a lifting platform and a base, the base is positioned at the bottommost layer of the device, the lifting platform is positioned at the lower end of the base, the material groove is positioned at the upper end of the base, the lifting platform is positioned at the lower end of the base, and the lifting platform controls the material groove to move up and down smoothly;
the ink-jet mechanism comprises an ink box, an ink path, auxiliary ink and an ink-jet printing head, the ink-jet printing head is positioned at the upper end of the base, the position under the ink-jet printing head corresponds to the upper end of the trough, a printing head bracket is arranged on the outer wall of the ink-jet printing head and is used for supporting the ink-jet printing head, the ink box is positioned on one side of the auxiliary ink, the ink box is connected with the auxiliary ink through the ink path, the auxiliary ink is positioned at the upper end of the ink-jet printing head, and the interior of the auxiliary ink is mutually connected with the ink-jet printing head on the printing head bracket;
photocuring mechanism includes ultraviolet lamp fixed disk, ultraviolet curing lamp and light modulator, the ultraviolet lamp fixed disk is located beat printer head support lower extreme, just ultraviolet lamp fixed disk upper end with it links to each other to beat printer head support lower extreme surface, the ultraviolet curing lamp is vertical to be located downwards the ultraviolet lamp fixed disk is inboard, just the ultraviolet curing lamp centers on the outer wall is beaten to the inkjet printer head, the light modulator is located ultraviolet lamp fixed disk one side, and through the electricity connect with the ultraviolet curing lamp links to each other, light modulator control the on-off time and the light intensity of ultraviolet curing lamp.
2. A photocuring spray-molding device based on ceramic material as set forth in claim 1, wherein: and a negative pressure sensor and a liquid level sensor are arranged in the auxiliary ink.
3. A photocuring spray-molding device based on ceramic material as set forth in claim 1, wherein: the ink jet print head is of a droplet piezoelectric type, and the number of the holes arranged on the ink jet print head is 100 to 1000.
4. A printing method based on the photocuring injection molding device based on ceramic material of any one of claims 1 to 3, characterized by comprising the following steps:
s1, configuring ink and modeling, configuring ink containing ceramic powder, an ink regulator and photosensitive resin, adding the configured ceramic ink into a 3D printer ink box, and dividing the ceramic ink into a plurality of layers of two-dimensional graphs by using software according to the three-dimensional modeling of a printed part; designing a printing path according to each layer of graph, planning a starting position and a terminal position, and setting the switching time of the ultraviolet curing lamp; designing layer height and printing rate parameters according to the size of the printed part, and simulating a printing process;
s2, printing and curing, namely, adopting a droplet jetting mode, jetting ceramic ink by the ink jet printing head, synchronously starting the ultraviolet curing lamp, starting the ink jet printing head to run the first layer of the graph, curing the ink by the ultraviolet curing lamp until the current layer is printed, closing the ultraviolet curing lamp and the ink jet printing head, descending the lifting platform, and continuously printing the next layer;
s3, repeating the operation layer by layer according to the second step until the last layer of light curing is finished, and forming the 3D part;
and S4, taking out the formed blank, and carrying out degreasing and sintering treatment to obtain the final ceramic forming body.
5. The printing method of the photocuring spray forming device based on ceramic material as set forth in claim 4, wherein: in the S1, the volume fraction of the ceramic powder in the ink is 40 vol% -70 vo 1%, the grain size interval of the ceramic powder is 0.01-20 μm, the ceramic powder accounts for 70% -90% of the proportion of the ink, and the content of the photosensitive resin accounts for 10% -30% of the proportion of the ink.
6. The printing method of the photocuring spray forming device based on ceramic material as set forth in claim 5, wherein: the spraying speed of the ceramic ink is 1-500 m/s, and the temperature in the forming cavity is controlled to be 20-50 ℃.
7. The printing method of the photocuring spray molding device based on ceramic material as set forth in claim 6, wherein: in S4, the sintering temperature of the blank is 900-1500 ℃.
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