Gradient ceramic material surface exposure forming device and forming method thereof

Abstract

The invention belongs to the technical field of ceramic photocuring additive manufacturing, and discloses a gradient ceramic material surface exposure forming device and a forming method thereof.The gradient ceramic material surface exposure forming device comprises a forming platform, a lifting mechanism, a first feeding mechanism, a second feeding mechanism, a mixing mechanism, a nozzle, an ultraviolet light source, a moving mechanism and a control mechanism; the forming platform is carried on the lifting mechanism, the nozzle and the ultraviolet light source are fixedly installed on the moving mechanism, the double-feeding mechanism is controlled to convey slurry for mixing, the nozzle can flexibly spray the slurry with different proportions, and the moving mechanism is arranged, so that the slurry mixing efficiency is improved. Spraying nozzles are flexibly switched for spraying, an ultraviolet light source is switched for irradiation curing, single-layer printing of ceramic components with different proportions can be efficiently completed, and finally the multi-layer gradient ceramic is obtained.

Description

Technical Field

[0001] The invention belongs to the technical field of ceramic photocuring additive manufacturing and particularly relates to a gradient ceramic material surface exposure molding device and a molding method thereof. Background Art

[0002] With the development of modern industry and technology, people's demand for high-performance and multifunctional materials is growing. Traditional single-component ceramic materials cannot meet multiple requirements such as strength, hardness, toughness, conductivity, wear resistance, lightness, corrosion resistance, etc. due to their single performance characteristics, thus showing limitations in some complex applications. Therefore, researchers are paying more and more attention to the preparation of functional gradient materials. Gradient ceramic materials refer to new composite ceramic materials that are formed by combining two or more ceramic materials with different properties through certain technologies and processes to form a continuous gradient change in space, so that the performance of ceramic materials has the characteristics of continuous change. Due to its excellent performance, it has received widespread attention in special fields such as advanced manufacturing and aerospace.

[0003] The traditional gradient ceramic composite molding technology and methods are costly, and the design process is very complex, which is not suitable for small batch preparation. For example, the methods such as tape casting and screen printing have long preparation cycles, complex processes, and relatively simple preparation shapes. Nowadays, the rise of 3D printing technology has also provided new ideas and methods for the preparation of functional gradient ceramic materials. The printing resolution and precision of multi-material extrusion molding by 3D printing technology are low, and the layer pattern is very obvious; multi-material jet printing technology is the current mainstream gradient material molding method. It has the advantages of high precision, but it has high requirements for slurry viscosity and fluidity, and is only suitable for printing low-viscosity ceramic slurries; ink direct writing technology can realize the gradient printing of parts, and its requirements for slurry are high viscosity, and it also requires shear thinning characteristics. Because it uses needle movement to shape, the printing efficiency is low, the single layer pattern is obvious, and it will collapse and the printed parts cannot be formed when printing for a long time. Therefore, it is necessary to develop a molding device and molding method that can greatly improve the printing speed, accurately prepare single-layer gradient ceramics with different component contents, and then form multi-layer composite gradient ceramics with complex shapes. Summary of the invention

[0004] The present invention aims to improve at least one technical problem in the background technology.

[0005] The present invention provides a gradient ceramic material surface exposure molding device, comprising a molding platform, a lifting mechanism, a first feeding mechanism, a second feeding mechanism, a mixing mechanism, a nozzle, an ultraviolet light source, a moving mechanism and a control mechanism, wherein the molding platform is mounted on the lifting mechanism, and the lifting mechanism is used to drive the molding platform to move up and down; the mixing mechanism is respectively connected with the first feeding mechanism and the second feeding mechanism, and the nozzle is connected with the mixing mechanism, and the mixing mechanism is used to mix the slurry conveyed by the first feeding mechanism and the second feeding mechanism; the moving mechanism is arranged above the molding platform, and the nozzle and the ultraviolet light source are respectively fixedly installed on the moving mechanism, and the nozzle and the ultraviolet light source are respectively facing the molding platform, and the moving mechanism drives the nozzle and the ultraviolet light source to switch positions; the control mechanism is used to control the feeding of the first feeding mechanism and the second feeding mechanism, and control the movement of the moving mechanism.

[0006] The beneficial effects of the gradient ceramic material surface exposure forming device of the present invention are as follows: by controlling the dual feeding mechanism to convey the slurry for mixing, the nozzle can be flexibly sprayed with slurry of different proportions, and then by setting the moving mechanism, the nozzle can be flexibly switched for spraying and the ultraviolet light source can be switched for irradiation and curing, so that single-layer printing with different proportions of ceramic components can be efficiently completed, and finally multi-layer gradient ceramics can be obtained.

[0007] Furthermore, the spraying range of the nozzle is 5cm-10cm in diameter, the distance between the nozzle and the forming platform is 10cm-20cm, the spraying pressure of the nozzle is less than 1bar, and the nozzle-related setting parameters should not be too large to prevent ceramic slurry from splashing during the spraying process.

[0008] Furthermore, the moving mechanism includes a turntable, which is movably installed above the forming platform. The nozzle and the ultraviolet light source are respectively fixedly installed on the turntable and arranged in a circular array along the turntable. The turntable is transmission-connected to the control mechanism. Through rotary position switching, it can ensure that the spraying of the nozzle and the irradiation of the ultraviolet light source are in the same area after switching.

[0009] Furthermore, the moving mechanism also includes a rotating shaft and a first motor. The turntable is transmission-connected to the first motor via the rotating shaft. The first motor is electrically connected to the control mechanism. The control mechanism can control the first motor to drive the turntable to rotate to switch the working parts (nozzle / ultraviolet light source) according to working conditions.

[0010] Furthermore, an encoder is provided to match the turntable, and the encoder is electrically connected to the control mechanism. The encoder is used to capture the position information of the turntable. The control mechanism controls the position of the turntable according to the position information. The encoder can provide very high measurement accuracy, accurately capture the position information of the turntable, ensure the accuracy of the position switching of the working parts, and make the spraying area of ​​the nozzle the same as the irradiation area of ​​the ultraviolet light source.

[0011] Furthermore, the first feeding mechanism includes a first slurry tank and a first conveying pipeline, the first slurry tank is connected to the mixing mechanism through the first conveying pipeline, and a first feeding pump is also connected between the first slurry tank and the mixing mechanism; the second feeding mechanism includes a second slurry tank and a second conveying pipeline, the second slurry tank is connected to the mixing mechanism through the second conveying pipeline, and a second feeding pump is also connected between the second slurry tank and the mixing mechanism; the first feed pump and the second feed pump are electrically connected to the control mechanism respectively, and the control mechanism can control the first feed pump and the second feed pump to extract the volume of the two-component ceramic slurry according to design requirements, and then transport them to the mixing mechanism for mixing to obtain a mixed slurry of the designed ratio; the mixing method of the mixing mechanism can be ultrasonic mixing, mechanical stirring mixing, reflux stirring mixing, etc.

[0012] Furthermore, the lifting mechanism includes a lifting base, a guide rail, a slider, and a second motor. The forming platform is mounted on the slider. The guide rail is fixedly mounted on the lifting base. A rack is provided on the guide rail. The second motor is fixedly mounted on the slider. A gear is provided on the slider. The gear is connected to the second motor through a transmission shaft. The gear is meshed with the rack. The second motor is electrically connected to the control mechanism. After a single layer of printing is completed, the lifting mechanism is controlled by the control mechanism to drive the forming platform to descend to prepare for printing the next layer.

[0013] A forming method implemented by the above-mentioned gradient ceramic material surface exposure forming device comprises the following steps:

[0014] Preparing a first ceramic slurry and a second ceramic slurry, and obtaining volume solid content parameters of the first ceramic slurry and the second ceramic slurry;

[0015] Putting the first ceramic slurry into the first feeding mechanism, and putting the second ceramic slurry into the second feeding mechanism;

[0016] Construct a multilayer gradient ceramic model based on design requirement information;

[0017] Determine printing parameters according to the multi-layer gradient ceramic model;

[0018] According to the volume solid content parameters and printing parameters, the height of the molding platform is adjusted by the lifting mechanism, and the position of the nozzle and the ultraviolet light source is adjusted by the moving mechanism to perform single-layer printing;

[0019] Single-layer printing is repeated according to the printing parameters to complete the forming of multi-layer gradient ceramics.

[0020] The beneficial effect of the forming method realized by the gradient ceramic material surface exposure forming device of the present invention is as follows: by respectively controlling the extraction of the contents of two ceramic slurries to mix and spray, a single-layer ceramic with two components in different ratios can be obtained, and then according to the designed multi-layer gradient ceramic model, multi-layer gradient ceramics with different component ratios between layers can be quickly printed.

[0021] Further, single-layer printing includes the following steps:

[0022] The position of the nozzle is adjusted by a moving mechanism, the height of the forming platform is adjusted by a lifting mechanism, and the first ceramic slurry and the second ceramic slurry are extracted and mixed according to the printing parameters and the volume solid content parameters, and sprayed to form a single-layer gradient ceramic layer;

[0023] The position of the ultraviolet light source is adjusted by a moving mechanism, and a single ceramic layer is irradiated according to printing parameters to complete single-layer printing.

[0024] Furthermore, the printing parameters include layer thickness parameters, gradient ratio parameters, curing depth parameters and exposure time parameters. The lifting mechanism adjusts the height of the forming platform according to the layer thickness parameters; the extraction volumes of the first ceramic slurry and the second ceramic slurry are respectively controlled according to the volume solid content parameters, gradient ratio parameters and curing depth parameters; and the single ceramic layer is irradiated according to the exposure time parameters.

[0025] The extracted volume of slurry is calculated by the following formula:

[0026] V=S·h (1)

[0027] V a +V b =V (2)

[0028] V a ·a%·B / A ＝ V b b% (3)

[0029] Where: V is the volume of the mixed slurry required for spraying; S is the area of ​​the nozzle spraying area; h is the curing depth parameter, which is the smaller value of the first ceramic and the second ceramic; V a is the extraction volume of the first ceramic slurry; a% is the volume solid content parameter of the first ceramic slurry; A is the gradient ratio parameter of the first ceramic slurry; V b is the extracted volume of the second ceramic slurry; B is the gradient ratio parameter of the second ceramic slurry; b% is the volume solid content parameter of the second ceramic slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 It is a schematic structural diagram of the gradient ceramic material surface exposure molding device of the present invention.

[0032] In the accompanying drawings: 1-forming platform; 2-nozzle; 3-ultraviolet light source; 41-turntable; 42-rotating axis; 43-first motor; 51-first slurry tank; 52-first delivery pipeline; 53-first feed pump; 54-second slurry tank; 55-second delivery pipeline; 56-second feed pump; 6-mixing mechanism; 71-lifting base; 72-guide rail; 73-slider; 8-multilayer gradient ceramic. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] Combine the following Figure 1 Embodiments of the present invention are described.

[0037] The present embodiment relates to a gradient ceramic material surface exposure molding device and a molding method thereof. Currently, the printing efficiency of gradient ceramic molding is low, and single-layer gradient ceramics with different component contents cannot be flexibly prepared.

[0038] An embodiment of the present invention provides a gradient ceramic material surface exposure molding device, including a molding platform 1, a lifting mechanism, a first feeding mechanism, a second feeding mechanism, a mixing mechanism 6, a nozzle 2, an ultraviolet light source 3, a moving mechanism and a control mechanism, wherein the molding platform 1 is mounted on the lifting mechanism, and the lifting mechanism is used to drive the molding platform 1 to move up and down; the mixing mechanism 6 is connected to the first feeding mechanism and the second feeding mechanism respectively, and the nozzle 2 is connected to the mixing mechanism 6, and the mixing mechanism 6 is used to mix the slurry transported by the first feeding mechanism and the second feeding mechanism; the moving mechanism is arranged above the molding platform 1, and the nozzle 2 and the ultraviolet light source 3 are fixedly installed on the moving mechanism respectively, and the nozzle 2 and the ultraviolet light source 3 are respectively facing the molding platform 1, and the moving mechanism drives the nozzle 2 and the ultraviolet light source 3 to switch positions; the control mechanism is used to control the feeding of the first feeding mechanism and the second feeding mechanism, and to control the movement of the moving mechanism.

[0039] This embodiment controls the dual feeding mechanisms (the first feeding mechanism and the second feeding mechanism) to transport the slurry for mixing, so that the nozzle 2 can flexibly spray out slurries with different proportions. By setting up the moving mechanism, the nozzle 2 can be flexibly switched for spraying and the ultraviolet light source 3 can be switched for irradiation and curing, so that single-layer printing with different proportions of ceramic components can be efficiently completed, and finally a multi-layer gradient ceramic 8 can be obtained.

[0040] Furthermore, in this embodiment, the spraying range of the nozzle 2 is set to a diameter of 10 cm, the distance between the nozzle 2 and the forming platform 1 is set to 20 cm, and the spraying pressure of the nozzle 2 is less than 1 bar to prevent the ceramic slurry from splashing during the spraying process and affecting the printing effect.

[0041] Furthermore, the moving mechanism includes a turntable 41, which is movably installed above the molding platform 1. The nozzle 2 and the ultraviolet light source 3 are respectively fixedly installed on the turntable 41 and arranged in a circular array along the turntable 41. The turntable 41 is transmission-connected to the control mechanism. This embodiment can ensure that the spraying of the nozzle 2 and the irradiation of the ultraviolet light source 3 are in the same area after the switching through the rotational position switching.

[0042] Furthermore, the moving mechanism also includes a rotating shaft 42 and a first motor 43. The turntable 41 is transmission-connected to the first motor 43 via the rotating shaft 42. The first motor 43 is electrically connected to the control mechanism. The control mechanism of this embodiment can control the first motor 43 to drive the turntable 41 to rotate to switch the working parts according to the working conditions. For example, single-layer printing is achieved by controlling the turntable 41 to rotate through the control mechanism, so that the nozzle 2 position is switched to a preset working area above the forming platform 1. After the nozzle 2 completes spraying and forms a single-layer gradient ceramic layer, the turntable 41 is controlled to rotate through the control mechanism, so that the ultraviolet light source 3 is switched to irradiate the working area to complete single-layer printing.

[0043] Furthermore, an encoder is provided to match the turntable 41, and the encoder is electrically connected to the control mechanism. The encoder is used to capture the position information of the turntable 41, and the control mechanism controls the position of the turntable 41 according to the position information. This embodiment accurately captures the position information of the turntable 41 through the setting of the encoder, thereby ensuring the accuracy of the position switching of the working part, so that the spraying area of ​​the nozzle 2 is the same as the irradiation area of ​​the ultraviolet light source 3.

[0044] Furthermore, the first feeding mechanism includes a first slurry tank 51 and a first conveying pipe 52, the first slurry tank 51 is connected to the mixing mechanism 6 through the first conveying pipe 52, and a first feeding pump 53 is also connected between the first slurry tank 51 and the mixing mechanism 6; the second feeding mechanism includes a second slurry tank 54 and a second conveying pipe 55, the second slurry tank 54 is connected to the mixing mechanism 6 through the second conveying pipe 55, and a second feeding pump 56 is also connected between the second slurry tank 54 and the mixing mechanism 6; the first feeding pump 53 and the second feeding pump 56 are respectively electrically connected to the control mechanism. In this embodiment, according to the gradient ratio parameters and curing depth parameters designed by the multi-layer gradient ceramic model, the control mechanism controls the first feeding pump 53 and the second feeding pump 56 to respectively extract corresponding volumes of ceramic slurry and convey them to the mixing mechanism 6 for mixing, so as to obtain a mixed slurry of the designed proportion, which is then conveyed to the nozzle 2 for spraying. In this embodiment, the mixing method of the mixing mechanism 6 is ultrasonic mixing.

[0045] Furthermore, the lifting mechanism includes a lifting base 71, a guide rail 72, a slider 73, and a second motor. The molding platform 1 is mounted on the slider 73. The guide rail 72 is fixedly mounted on the lifting base 71. A rack is provided on the guide rail 72. The second motor is fixedly mounted on the slider 73. A gear is provided on the slider 73. The gear is connected to the second motor through a transmission shaft. The gear is meshed with the rack. The second motor is electrically connected to the control mechanism. In this embodiment, after a single layer of printing is completed, the control mechanism controls the operation of the second motor, and the second motor drives the gear to move the slider 73 downward along the guide rail 72, thereby driving the molding platform 1 to descend in preparation for printing the next layer.

[0046] A forming method implemented by the above-mentioned gradient ceramic material surface exposure forming device comprises the following steps:

[0047] Preparing a first ceramic slurry and a second ceramic slurry, and obtaining volume solid content parameters of the first ceramic slurry and the second ceramic slurry;

[0048] Putting the first ceramic slurry into the first feeding mechanism, and putting the second ceramic slurry into the second feeding mechanism;

[0049] Construct a multilayer gradient ceramic model based on design requirement information;

[0050] Determine printing parameters according to the multi-layer gradient ceramic model;

[0051] According to the printing parameters and volume solid content parameters, the height of the molding platform 1 is adjusted by the lifting mechanism, and the positions of the nozzle 2 and the ultraviolet light source 3 are adjusted by the moving mechanism to perform single-layer printing;

[0052] Single-layer printing is repeated according to the printing parameters to complete the forming of the multi-layer gradient ceramic 8.

[0053] Further, single-layer printing includes the following steps:

[0054] The position of the nozzle 2 is adjusted by the moving mechanism, the height of the forming platform 1 is adjusted by the lifting mechanism, and the first ceramic slurry and the second ceramic slurry are extracted and mixed according to the printing parameters and the volume solid content parameters, and sprayed to form a single-layer gradient ceramic layer;

[0055] The position of the ultraviolet light source 3 is adjusted by the moving mechanism, and the single-layer ceramic layer is irradiated according to the printing parameters to complete the single-layer printing.

[0056] Furthermore, the printing parameters include layer thickness parameters, gradient ratio parameters, curing depth parameters and exposure time parameters. The lifting mechanism adjusts the height of the forming platform 1 according to the layer thickness parameters; the extraction volumes of the first ceramic slurry and the second ceramic slurry are respectively controlled according to the volume solid content parameters, gradient ratio parameters and curing depth parameters; and the single ceramic layer is irradiated according to the exposure time parameters.

[0057] The extracted volume of slurry is calculated by the following formula:

[0058] V=S·h (1)

[0059] V a +V b =V (2)

[0060] V a ·a%·B / A ＝ V b b% (3)

[0061] Where: V is the volume of the mixed slurry required for spraying; S is the area of ​​the nozzle spraying area; h is the curing depth parameter, which is the smaller value of the first ceramic and the second ceramic; V a is the extraction volume of the first ceramic slurry; a% is the volume solid content parameter of the first ceramic slurry; A is the gradient ratio parameter of the first ceramic slurry; V b is the extracted volume of the second ceramic slurry; B is the gradient ratio parameter of the second ceramic slurry; b% is the volume solid content parameter of the second ceramic slurry.

[0062] The calculation example of the slurry extraction volume in the single-layer gradient ceramic printing of this embodiment is as follows: the first slurry is a zirconia ceramic slurry, and its volume solid content parameter is 50%, and the second slurry is an alumina ceramic slurry, and its volume solid content parameter is 55%; according to the designed gradient ceramic model, the gradient ratio parameter of the zirconia ceramic slurry is determined to be 0.7, and the gradient ratio parameter of the alumina ceramic slurry is 0.3; according to the designed gradient ceramic model, the curing depth of the zirconia ceramic single layer is determined to be 30 μm, and the curing depth of the alumina ceramic single layer is 50 μm, so the curing depth parameter is taken as 30 μm; the volume of the mixed slurry required for spraying is calculated by formula (1) as 0.2356 cm 3 Combining formulas (1), (2) and (3), the extracted volume of zirconia ceramic slurry is calculated to be 0.1696 cm 3 , the extraction volume of alumina ceramic slurry is 0.066cm 3 .

[0063] The multilayer gradient ceramic surface exposure molding method of this embodiment can obtain a single-layer ceramic with two components in different ratios by controlling the extraction of the content of two ceramic slurries respectively to mix and spray them. Then, according to the designed multilayer gradient ceramic model, multilayer gradient ceramics with different component ratios between layers can be quickly printed.

[0064] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A gradient ceramic material surface exposure molding device, characterized in that: The invention comprises a molding platform (1), a lifting mechanism, a first feeding mechanism, a second feeding mechanism, a mixing mechanism (6), a nozzle (2), an ultraviolet light source (3), a moving mechanism and a control mechanism, wherein the molding platform (1) is mounted on the lifting mechanism, and the lifting mechanism is used to drive the molding platform (1) to move up and down; the mixing mechanism (6) is respectively connected to the first feeding mechanism and the second feeding mechanism, and the nozzle (2) is connected to the mixing mechanism (6), and the mixing mechanism (6) is used to mix the slurry delivered by the first feeding mechanism and the second feeding mechanism; the moving mechanism is arranged above the molding platform (1), the nozzle (2) and the ultraviolet light source (3) are respectively fixedly mounted on the moving mechanism, the nozzle (2) and the ultraviolet light source (3) are respectively facing the molding platform (1), and the moving mechanism drives the nozzle (2) and the ultraviolet light source (3) to switch positions; and the control mechanism is used to control the feeding of the first feeding mechanism and the second feeding mechanism, and to control the movement of the moving mechanism.

2. The gradient ceramic material surface exposure molding device according to claim 1, characterized in that: The spraying range of the nozzle (2) is 5 cm to 10 cm in diameter, the distance between the nozzle (2) and the molding platform (1) is 10 cm to 20 cm, and the spraying pressure of the nozzle (2) is less than 1 bar.

3. The gradient ceramic material surface exposure molding device according to claim 1, characterized in that: The moving mechanism comprises a turntable (41), the turntable (41) being movably mounted above the molding platform (1), the nozzle (2) and the ultraviolet light source (3) being respectively fixedly mounted on the turntable (41) and arranged in a circular array along the turntable (41), and the turntable (41) being transmission-connected to the control mechanism.

4. The gradient ceramic material surface exposure molding device according to claim 3, characterized in that: The moving mechanism further comprises a rotating shaft (42) and a first motor (43); the rotating disk (41) is transmission-connected to the first motor (43) via the rotating shaft (42); and the first motor (43) is electrically connected to the control mechanism.

5. The gradient ceramic material surface exposure molding device according to claim 4, characterized in that: An encoder matching the turntable (41) is provided, the encoder is electrically connected to the control mechanism, the encoder is used to capture position information of the turntable (41), and the control mechanism controls the position of the turntable (41) according to the position information.

6. The gradient ceramic material surface exposure molding device according to claim 1, characterized in that: The first feeding mechanism comprises a first slurry tank (51) and a first conveying pipeline (52); the first slurry tank (51) is connected to the mixing mechanism (6) through the first conveying pipeline (52); a first feeding pump (53) is also connected between the first slurry tank (51) and the mixing mechanism (6); the second feeding mechanism comprises a second slurry tank (54) and a second conveying pipeline (55); the second slurry tank (54) is connected to the mixing mechanism (6) through the second conveying pipeline (55); a second feeding pump (56) is also connected between the second slurry tank (54) and the mixing mechanism (6); the first feeding pump (53) and the second feeding pump (56) are respectively electrically connected to the control mechanism.

7. The gradient ceramic material surface exposure molding device according to claim 1, characterized in that: The lifting mechanism comprises a lifting base (71), a guide rail (72), a slider (73), and a second motor; the molding platform (1) is mounted on the slider (73); the guide rail (72) is fixedly mounted on the lifting base (71); a rack is provided on the guide rail (72); the second motor is fixedly mounted on the slider (73); a gear is provided on the slider (73); the gear is transmission-connected to the second motor via a transmission shaft; the gear is meshed with the rack; and the second motor is electrically connected to the control mechanism.

8. A forming method implemented by the gradient ceramic material surface exposure forming device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Preparing a first ceramic slurry and a second ceramic slurry, and obtaining volume solid content parameters of the first ceramic slurry and the second ceramic slurry; Putting the first ceramic slurry into a first feeding mechanism, and putting the second ceramic slurry into a second feeding mechanism; Construct a multilayer gradient ceramic model based on design requirement information; Determining printing parameters according to the multi-layer gradient ceramic model; According to the volume solid content parameter and the printing parameter, the height of the molding platform (1) is adjusted by a lifting mechanism, and the positions of the nozzle (2) and the ultraviolet light source (3) are adjusted by a moving mechanism to perform single-layer printing; The single-layer printing is repeated according to the printing parameters to complete the molding of the multi-layer gradient ceramic (8).

9. The molding method according to claim 8, characterized in that: The single-layer printing comprises the following steps: The position of the nozzle (2) is adjusted by the moving mechanism, the height of the forming platform (1) is adjusted by the lifting mechanism, and the first ceramic slurry and the second ceramic slurry are extracted and mixed according to the printing parameters and the volume solid content parameters, and sprayed to form a single-layer gradient ceramic layer; The position of the ultraviolet light source (3) is adjusted by the moving mechanism, and the single-layer ceramic layer is irradiated according to the printing parameters to complete the single-layer printing.

10. The molding method according to claim 9, characterized in that: The printing parameters include a layer thickness parameter, a gradient ratio parameter, a curing depth parameter and an exposure time parameter; the lifting mechanism adjusts the height of the forming platform (1) according to the layer thickness parameter; controls the extraction volumes of the first ceramic slurry and the second ceramic slurry respectively according to the volume solid content parameter, the gradient ratio parameter and the curing depth parameter; and irradiates the single ceramic layer according to the exposure time parameter.

Images