Method and system for preparing composite cover plate

Abstract

The present invention discloses a method and system for preparing a composite cover plate, the method comprising: subjecting a first ceramic slurry to a tape casting process to obtain a diaphragm; subjecting a second ceramic slurry to a tape casting process after mixing it with a pore-forming agent to obtain a porous diaphragm; delivering the diaphragm and the porous diaphragm to a 3D carrier plate mold after an isolation treatment, and vacuum sealing, and then subjecting the carrier plate mold to an isostatic pressing process, and subjecting the obtained green body to sintering and a first post-treatment to obtain a 3D ceramic part with a porous surface as a bonding surface; subjecting the injection molding feed to injection molding to obtain a 3D plastic lining with a rough surface as a bonding surface; subjecting the bonding surface of the 3D ceramic part to the bonding surface of the 3D plastic lining through a glue dispensing process, and subjecting the obtained bonded part to a second post-treatment to obtain a composite cover plate. Compared with in-mold injection molding, the composite cover plate made by this method has a high comprehensive yield, and compared with the traditional glue dispensing process, the bonding strength and reliability of the 3D ceramic part and the 3D plastic lining are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the field of preparation of 3D appearance structural parts, and in particular, the present invention relates to a method and system for preparing a composite cover plate. Background Art

[0002] With the development of technology, the materials of 3C product appearance structural parts are also constantly evolving. Taking the back panel of a mobile phone as an example, the current mainstream back panel materials have begun to gradually change from plastic and aluminum alloy to glass, ceramic and other materials. However, due to the high density of ceramics, the application of ceramic appearance structural parts in 3C products is greatly limited. In order to break through the bottleneck and meet the needs of end customers, engineering and technical personnel have developed nano injection molding technology and dispensing technology to combine ceramics and plastics. This type of technology for manufacturing new composite 3C structural parts combines the high hardness, wear resistance, and good texture of ceramics with the low density, high toughness, low cost, and easy manufacturing characteristics of plastic parts.

[0003] However, the existing glue dispensing process is limited in its actual engineering application due to process problems such as glue bonding reliability and glue overflow. Nano injection molding technology is becoming more and more common in engineering practice because the injection molding technology is relatively mature and has a high degree of automation. The existing nano injection molding technology generally involves directly injecting molding on the ceramic substrate after grinding and polishing, or injecting molding after the surface is treated by chemical corrosion, physical spraying, laser roughening, grinding, etc. after grinding and polishing. The reliability of the ceramic body combined by the latter method is greatly increased, and the bonding strength is also greatly improved. However, it is extremely difficult to perform nano injection molding on 3D ceramics, and currently nano injection molding can only be performed on 2D products (flat sheets).

[0004] Therefore, the existing preparation technology of 3D appearance structural parts needs to be further improved. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one object of the present invention is to provide a method and system for preparing a composite cover plate. Compared with in-mold injection molding, the composite cover plate made by this method has a high comprehensive yield, and compared with the traditional dispensing process, the bonding strength and reliability of the 3D ceramic part and the 3D plastic liner are greatly improved.

[0006] In one aspect of the present invention, the present invention provides a method for preparing a composite cover plate. According to an embodiment of the present invention, the method comprises:

[0007] Performing a tape casting process on the first ceramic slurry to obtain a diaphragm;

[0008] The second ceramic slurry is mixed with a pore-forming agent and then subjected to a tape casting process to obtain a porous membrane;

[0009] The membrane and the porous membrane are sent to the 3D carrier mold after the isolation treatment, and vacuum-encapsulated, and then isostatically pressed together with the carrier mold, and the obtained green body is sintered and subjected to the first post-treatment to obtain a 3D ceramic part with a porous bonding surface;

[0010] The injection molding feed is injection molded to obtain a 3D plastic lining with a rough fitting surface;

[0011] The bonding surface of the 3D ceramic part and the bonding surface of the 3D plastic liner are bonded together by a dispensing process, and the resulting bonded part is subjected to a second post-processing to obtain a composite cover plate.

[0012] According to the method for preparing a composite cover plate of an embodiment of the present invention, a film and a porous film are prepared respectively by adopting a casting process, and the thickness of the film and the porous film can be freely adjusted according to demand; further, the obtained film and the porous film are laminated and sent to a 3D carrier plate mold after the isolation and adhesion treatment. During the lamination process, the number and lamination sequence of the film and the porous film can be adjusted according to product requirements. After lamination, vacuum packaging is performed to facilitate subsequent isostatic pressing; further, the 3D carrier plate mold laminated with the film and the porous film is subjected to isostatic pressing to obtain a 3D carrier plate mold. D blank, after further sintering and the first post-treatment, can obtain a 3D ceramic part with a porous bonding surface; and by directly performing injection molding on the injection molding feed, a 3D plastic lining with a rough bonding surface can be obtained; under the dispensing process, the obtained 3D ceramic part and the 3D plastic lining can be bonded together. Since the bonding surface of the 3D ceramic part is a porous surface, the bonding surface of the 3D plastic lining is also a rough surface, which greatly increases the contact area between the 3D plastic lining and the 3D ceramic part, greatly improving the bonding strength and reliability of the two. After the second post-treatment, a ceramic-plastic composite cover plate can be obtained. Compared with in-mold injection molding, this process successfully avoids the contradiction between the gap reserved for the fit between the ceramic and the injection mold during in-mold injection molding of 3D ceramic parts and the fact that ceramic is a brittle material and has no deformation, making it possible to reliably composite 3D ceramic parts with 3D plastic linings. The composite cover plate has a high comprehensive yield and can effectively control the manufacturing cost. Furthermore, compared with the traditional dispensing process, the bonding surface area between the 3D ceramic parts and the 3D plastic lining in this process is significantly increased, and the bonding strength and reliability of the two are greatly improved.

[0013] In addition, the method for preparing the composite cover plate according to the above embodiment of the present invention may also have the following additional technical features:

[0014] In some embodiments of the present invention, the first ceramic slurry and the second ceramic slurry contain ceramic powder, and the ceramic powder is selected from at least one of zirconium oxide and aluminum oxide, aluminum nitride, and strontium aluminate.

[0015] In some embodiments of the present invention, the pore-forming agent is selected from at least one of carbon powder, plastic powder, carbonate, sulfur powder, phosphorus powder, and graphite powder.

[0016] In some embodiments of the present invention, the mass ratio of the ceramic powder to the pore-forming agent in the second ceramic slurry is 1.5 to 150:1.

[0017] In some embodiments of the present invention, in the 3D ceramic part, the thickness of the porous layer does not exceed 1 / 3.

[0018] In some embodiments of the present invention, the isostatic pressing treatment is selected from at least one of hot pressing, cold pressing, cold isostatic pressing, and warm isostatic pressing.

[0019] In some embodiments of the present invention, the isostatic pressing treatment is performed under a pressure of 20 to 300 MPa and for a time of 0.5 to 1800 s.

[0020] In some embodiments of the present invention, the sintering temperature of the sintering treatment is 1000-1700° C., and the holding time is 5-480 min.

[0021] In some embodiments of the present invention, the first post-processing is selected from at least one of laser cutting, CNC, thinning, cleaning, annealing, grinding, polishing, and drilling.

[0022] In some embodiments of the present invention, the injection molding feedstock is selected from at least one of glass fiber reinforced polycarbonate, glass fiber reinforced polybutylene terephthalate, and glass fiber reinforced polyamide.

[0023] In some embodiments of the present invention, in the 3D plastic lining, the roughness of the rough surface is Ra0.1-Ra12.5.

[0024] In some embodiments of the present invention, the glue used in the glue dispensing process is anaerobic glue and / or epoxy glue.

[0025] In some embodiments of the present invention, the second post-treatment includes pressurization curing and deburring.

[0026] In another aspect of the present invention, the present invention provides a system applicable to the above-mentioned method for preparing a composite cover plate. According to an embodiment of the present invention, the system comprises:

[0027] A casting device, wherein the casting device is used to prepare a membrane sheet and a porous membrane sheet respectively;

[0028] A 3D carrier mold, the 3D carrier mold is connected to the casting device, and the 3D carrier mold is used to stack the membrane and the porous membrane, and perform vacuum encapsulation after stacking;

[0029] An isostatic pressing device, the isostatic pressing device is connected to the 3D carrier mold, and the isostatic pressing device is used to perform isostatic pressing on the 3D carrier mold encapsulating the membrane and the porous membrane to obtain a green body;

[0030] A sintering device, the sintering device is connected to the isostatic pressing device, and the sintering device has a green body inlet and a ceramic green body outlet;

[0031] A first post-processing unit, wherein the first post-processing unit has a ceramic body inlet and a 3D ceramic part outlet, wherein the ceramic body inlet is connected to the ceramic body outlet;

[0032] An injection molding device, wherein the injection molding device has an injection molding feeding inlet and a 3D plastic lining outlet;

[0033] A glue dispensing device, wherein the glue dispensing device has a 3D ceramic component inlet, a 3D plastic lining inlet and a bonding component outlet, wherein the 3D ceramic component inlet is connected to the 3D ceramic component outlet, and the 3D plastic lining inlet is connected to the 3D plastic lining outlet;

[0034] The second post-processing unit has a bonding member inlet and a composite cover plate outlet, and the bonding member inlet is connected to the bonding member outlet.

[0035] According to the system for preparing a composite cover plate of an embodiment of the present invention, a film and a porous film are prepared respectively by adopting a casting process, and the thickness of the film and the porous film can be freely adjusted according to demand; further, the obtained film and the porous film are laminated and sent to a 3D carrier plate mold after the isolation treatment. During the lamination process, the number and lamination sequence of the film and the porous film can be adjusted according to product requirements. After lamination, vacuum packaging is performed to facilitate subsequent isostatic pressing; further, the 3D carrier plate mold laminated with the film and the porous film is subjected to isostatic pressing to obtain a 3D carrier plate mold. D blank, after further sintering and the first post-treatment, can obtain a 3D ceramic part with a porous bonding surface; and by directly performing injection molding on the injection molding feed, a 3D plastic lining with a rough bonding surface can be obtained; under the dispensing process, the obtained 3D ceramic part and the 3D plastic lining can be bonded together. Since the bonding surface of the 3D ceramic part is a porous surface, the bonding surface of the 3D plastic lining is also a rough surface, which greatly increases the contact area between the 3D plastic lining and the 3D ceramic part, greatly improving the bonding strength and reliability of the two. After the second post-treatment, a ceramic-plastic composite cover plate can be obtained. Compared with in-mold injection molding, this process successfully avoids the contradiction between the gap reserved for the fit between the ceramic and the injection mold during in-mold injection molding of 3D ceramic parts and the fact that ceramic is a brittle material and has no deformation, making it possible to reliably composite 3D ceramic parts with 3D plastic linings. The composite cover plate has a high comprehensive yield and can effectively control the manufacturing cost. Furthermore, compared with the traditional dispensing process, the bonding surface area between the 3D ceramic parts and the 3D plastic lining in this process is significantly increased, and the bonding strength and reliability of the two are greatly improved.

[0036] In addition, the system for preparing a composite cover plate according to the above embodiment of the present invention may also have the following additional technical features:

[0037] In some embodiments of the present invention, the casting device is selected from a carrier belt casting machine and / or a steel belt casting machine.

[0038] In some embodiments of the present invention, the isostatic pressing device is selected from at least one of a hot press, a cold press, a cold isostatic press, and a warm isostatic press.

[0039] In some embodiments of the present invention, the sintering device is a box furnace and / or a tunnel furnace.

[0040] In some embodiments of the present invention, the first post-processing unit includes at least one of a laser cutting device, a CNC device, a thinning device, a cleaning device, an annealing device, a grinding device, a polishing device, and a punching device.

[0041] In some embodiments of the present invention, the injection molding device is selected from at least one of a vertical injection molding machine, a horizontal injection molding machine, and an all-electric injection molding machine.

[0042] In some embodiments of the present invention, the dispensing device is selected from at least one of a single-component dispensing machine and a two-component dispensing machine.

[0043] In some embodiments of the present invention, the second post-processing unit includes at least one of a pressurized curing device and a deburring device.

[0044] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] 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:

[0046] Figure 1 is a schematic flow chart of a method for preparing a composite cover plate according to one embodiment of the present invention;

[0047] Figure 2 is a schematic diagram of the structure of a system for preparing a composite cover plate according to an embodiment of the present invention;

[0048] Figure 3 Schematic diagram of stacking of 3D carrier mold in the embodiment;

[0049] Figure 4 Schematic diagram of the composite cover plate obtained in the embodiment. DETAILED DESCRIPTION

[0050] Embodiments of the present invention are described in detail below, examples of which 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 intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In one aspect of the present invention, the present invention provides a method for preparing a composite cover plate. According to an embodiment of the present invention, referring to Figure 1 , the method comprising:

[0056] S100: Casting the first ceramic slurry

[0057] In this step, the first ceramic slurry is subjected to a casting process to obtain a diaphragm. The inventors found that the method for preparing a diaphragm has many advantages such as fast speed, high degree of automation, high efficiency, uniform organizational structure, and good product quality. It should be noted that the specific preparation method of the first ceramic slurry is not particularly limited, and those skilled in the art can select it according to actual needs. For example, the ceramic powder that has been finely ground and calcined can be first added to a solvent, and an anti-coagulant, a defoaming agent, a sintering accelerator, etc. can be added for wet mixing if necessary; then an adhesive, a plasticizer, a lubricant, etc. are added for mixing to form a stable slurry with good fluidity. Among them, the specific type of ceramic powder can be at least one of zirconium oxide, aluminum oxide, aluminum nitride, and strontium aluminate, for example, zirconium oxide, and the color of zirconium oxide ceramics is not particularly limited. Those skilled in the art can select it according to actual needs, for example, it can be selected from at least one of black zirconium oxide ceramics, white zirconium oxide ceramics, dark green zirconium oxide ceramics, and pink zirconium oxide ceramics. The above-mentioned ceramics have a noble texture and a warm color like jade, and the use of them can make the prepared composite cover plate have a good appearance expression.

[0058] S200: Mix the second ceramic slurry with the pore-forming agent and perform tape casting

[0059] In this step, the second ceramic slurry is mixed with a pore-forming agent and then subjected to a casting process to obtain a porous membrane. The inventors found that the method for preparing a membrane has many advantages such as fast speed, high degree of automation, high efficiency, uniform organizational structure, and good product quality. It should be noted that the specific preparation method of the second ceramic slurry is not particularly limited, and those skilled in the art can select it according to actual needs. For example, the ceramic powder obtained by fine grinding and calcination can be first added to a solvent, and an anti-coagulant, a defoaming agent, a sintering promoter, etc. can be added for wet mixing if necessary; then an adhesive, a plasticizer, a lubricant, etc. are added for mixing to form a stable slurry with good fluidity. Among them, the specific type of ceramic powder can be at least one of zirconium oxide, aluminum oxide, aluminum nitride, and strontium aluminate, for example, zirconium oxide, and the color of the zirconium oxide ceramic is not particularly limited, and those skilled in the art can select it according to actual needs, for example, it can be selected from at least one of black zirconium oxide ceramics, white zirconium oxide ceramics, dark green zirconium oxide ceramics, pink zirconium oxide ceramics, etc. The ceramic has a noble texture and a jade-like color, and the composite cover plate prepared by using the ceramic has a good appearance. It should be noted that the specific formulas of the first ceramic slurry and the second ceramic slurry may be the same or different, and those skilled in the art may select according to actual needs.

[0060] Furthermore, the pore-forming agent added in this step will volatilize during the subsequent sintering process to obtain a 3D ceramic part with a porous bonding surface. Furthermore, the specific type of the pore-forming agent is not particularly limited, and those skilled in the art can select it according to actual needs, for example, it can be selected from at least one of carbon powder, plastic powder, carbonate, sulfur powder, phosphorus powder, and graphite powder, wherein the carbonate is a carbonate that can be decomposed at high temperature, for example, it can be calcium carbonate. The inventor found that when the pore-forming agent is a high-temperature decomposition inorganic substance such as carbonate, this type of substance will decompose and volatilize at high temperature, thereby producing small holes; when the pore-forming agent is a high-temperature ablation inorganic substance such as carbon powder, this type of substance will react with oxygen in the air at high temperature to escape gas, thereby producing small holes; when the pore-forming agent is a high-temperature ablation organic substance such as plastic powder, specifically PVB powder, PVA powder, PC powder, this type of substance will also react with oxygen in the air at high temperature to escape gas, thereby producing small holes.

[0061] Furthermore, the mass ratio of the ceramic powder to the pore-forming agent in the second ceramic slurry is not particularly limited, and those skilled in the art can select it according to actual needs, such as 1.5 to 150:1, for example, 1.5 / 15 / 30 / 45 / 60 / 75 / 90 / 105 / 120 / 135 / 150:1. The inventors found that when the ratio of ceramic powder to pore-forming agent is too low, the content of pore-forming agent is too high, and the volume occupied by the pores in the porous membrane is too large, resulting in a significant decrease in the bonding strength between the porous surface and the 3D plastic lining; when the ratio of ceramic powder to pore-forming agent is too high, the volume occupied by the pores in the porous membrane is too small, resulting in a significant decrease in the pore size and the number of pores on the porous surface, which will also reduce the bonding strength between the 3D ceramic part and the 3D plastic lining.

[0062] S300: The membrane and the porous membrane are sent to the 3D carrier mold after the isolation treatment, and vacuum-encapsulated, and then the carrier mold is subjected to isostatic pressing treatment together, and the obtained green body is sintered and the first post-treatment is performed.

[0063] In this step, the diaphragm and the porous diaphragm are sent to the 3D carrier mold after the isolation treatment, and vacuum-encapsulated, and then the isostatic pressing treatment is carried out together with the carrier mold, and the obtained green body is sintered and the first post-processed to obtain a 3D ceramic part with a porous surface as the bonding surface. Specifically, the specific method of laminating the diaphragm and the porous diaphragm is not particularly limited, for example, one or more diaphragms can be placed on the 3D carrier mold first, and then one or more porous diaphragms are stacked on one or more diaphragms, or one or more porous diaphragms can be placed on the 3D carrier mold first, and then one or more diaphragms are stacked on one or more porous diaphragms, and in the lamination process, the number of specific diaphragms and porous diaphragms is not particularly limited, and those skilled in the art can select according to actual needs, for example, according to the thickness of the diaphragm and the porous diaphragm and the needs of the final product, the specific number of diaphragms and porous diaphragms can be determined. Then the stacked diaphragm is isostatically pressed together with the 3D carrier mold to increase the density between the products. After isostatic pressing, it is sintered to obtain a 3D ceramic part with a porous surface as the bonding surface. The inventor found that the porous diaphragm contains a pore-forming agent, and the pore-forming agent volatilizes during the sintering process, and the porous diaphragm layer becomes a porous ceramic layer; at the same time, because the diaphragm and the porous diaphragm contain substances such as binders, after sintering, the originally sheet-like diaphragm and the porous diaphragm and / or the diaphragms and / or the porous diaphragms become a tightly integrated whole, and after the first post-processing, a 3D ceramic part with a porous surface as the bonding surface is obtained.

[0064] According to one embodiment of the present invention, the thickness ratio of the porous layer in the 3D ceramic part is not particularly limited, and those skilled in the art can select it according to actual needs, such as not exceeding 1 / 3 of the thickness of the corresponding 3D ceramic part. The inventors found that if the thickness of the porous layer is too large, it will greatly affect the physical properties of the entire product, such as reduced strength, reduced insulation level, and increased water absorption, and that too large a porous layer thickness cannot continuously increase the bonding strength between the ceramic part and the plastic lining.

[0065] According to another embodiment of the present invention, the specific type of isostatic pressing is not particularly limited, and those skilled in the art can select it according to actual needs, for example, it can be at least one selected from hot pressing, cold pressing, cold isostatic pressing, and warm isostatic pressing. Further, the specific conditions of isostatic pressing are not particularly limited, for example, the pressure of isostatic pressing can be 20-300MPa, such as 20MPa, 50MPa, 80MPa, 110MPa, 140MPa, 170MPa, 200MPa, 230MPa, 260MPa, 290MPa, 300MPa, and the time can be 0.5-1800s, such as 0.5s, 100s, 300s, 500s, 700s, 900s, 1100s, 1300s, 1500s, 1700s, 1800s. The inventors found that when the isostatic pressing pressure is too small, it is difficult for the cast film to become completely integrated during the pressing process; when the pressure is too high, the equipment purchase cost increases significantly, but the improvement in the pressing effect of the film is not obvious; when the holding time is too short, the cast film is also difficult to become completely integrated during the pressing process; when the pressing time is too long, the performance of the equipment is affected. Similarly, excessively increasing the holding time does not significantly improve the pressing effect of the film.

[0066] According to another embodiment of the present invention, the conditions for the sintering treatment are not particularly limited, and those skilled in the art can select according to actual needs. For example, the sintering temperature of the sintering treatment can be 1000-1700°C, such as 1000°C, 1100°C, 1200°C, 1300°C, 1400°C, 1500°C, 1600°C, and 1700°C, and the insulation time can be 5-480min, such as 5min, 50min, 100min, 150min, 200min, 250min, 300min, 350min, 400min, 450min, and 480min. The inventors found that if the sintering temperature is too low, the density of the ceramic will be too low, and pits will easily appear during the processing; if the sintering temperature is too high, the density of the ceramic will be too low due to over-burning, and the grains will easily grow abnormally, and pits will easily appear during the processing; if the holding time is too short, the sintering degree of the ceramic surface and the interior of the ceramic will easily be inconsistent, affecting the performance of the ceramic; if the holding time is too long, the grains will easily grow abnormally and the sintering cost will be greatly increased.

[0067] According to another embodiment of the present invention, the specific type of post-processing is not particularly limited, and those skilled in the art can select it according to actual needs, for example, it can be at least one selected from laser cutting, CNC, thinning, cleaning, annealing, grinding, polishing, and drilling. The inventors found that laser cutting can quickly and efficiently remove the burrs or rough drilling of the ceramic body; CNC can accurately process the shape, contour and drilling of the ceramic body; large water grinding, double-sided grinding, and single-sided grinding can complete ceramic thinning and achieve control of the thickness of the ceramic body; ultrasonic cleaning can clean the dust and oil on the surface of the ceramic body; by polishing the ceramic surface, the ceramic appearance can present a mirror effect; drilling equipment such as CNC and laser cutting can process holes of various shapes on the ceramic surface.

[0068] S400: Feeding the injection molding material for injection molding

[0069] In this step, the injection molding feed is injection molded to obtain a 3D plastic lining with a rough fitting surface. Specifically, the 3D plastic lining with a rough fitting surface can be obtained by patterning, drawing, or etching the mold surface.

[0070] According to one embodiment of the present invention, the specific type of injection molding feed is not particularly limited, and those skilled in the art can select it according to actual needs, such as being selected from at least one of glass fiber reinforced polycarbonate, glass fiber reinforced polybutylene terephthalate, and glass fiber reinforced polyamide. Furthermore, in the 3D plastic lining, the roughness of the rough surface can be Ra0.1 to Ra12.5. The inventors found that if the roughness of the rough surface is too small, the bonding strength between the glue layer and the plastic lining will be reduced, resulting in insufficient bonding strength between the ceramic part and the plastic lining; and if the roughness of the rough surface is too large, the thickness of the glue layer will need to be greatly increased and the mechanical properties of the plastic lining will be affected.

[0071] S500: Bond the bonding surface of the 3D ceramic part and the bonding surface of the 3D plastic liner by glue dispensing process, and perform the second post-processing on the resulting bonded part

[0072] In this step, the bonding surface of the 3D ceramic part and the bonding surface of the 3D plastic lining are bonded by a glue dispensing process, and the resulting bonded part is subjected to a second post-processing to obtain a composite cover plate. The inventors found that under the glue dispensing process, the resulting 3D ceramic part and the 3D plastic lining can be bonded. Because the bonding surface of the 3D ceramic part is a porous surface, and the bonding surface of the 3D plastic lining is also a rough surface, this greatly increases the contact area between the 3D plastic lining and the 3D ceramic part, and greatly improves the bonding strength and reliability of the two. After the second post-processing, a ceramic-plastic composite cover plate can be obtained. Specifically, a glue dispensing machine can be used to dispense glue on the porous bonding surface of the 3D ceramic part, and then the rough bonding surface of the 3D plastic lining is bonded to the porous bonding surface of the 3D ceramic part that has been glued, and a composite cover plate is obtained by a second post-processing.

[0073] According to one embodiment of the present invention, the specific type of glue used in the glue dispensing process is not particularly limited, such as anaerobic glue and / or epoxy glue. The inventors found that anaerobic glue and epoxy glue have strong weather resistance, chemical corrosion resistance and bonding performance.

[0074] According to yet another embodiment of the present invention, the second post-processing may include pressurization curing and deburring processing.

[0075] According to the method for preparing a composite cover plate of an embodiment of the present invention, a film and a porous film are prepared respectively by adopting a casting process, and the thickness of the film and the porous film can be freely adjusted according to demand; further, the obtained film and the porous film are laminated and sent to a 3D carrier plate mold after the isolation and adhesion treatment. During the lamination process, the number and lamination sequence of the film and the porous film can be adjusted according to product requirements. After lamination, vacuum packaging is performed to facilitate subsequent isostatic pressing; further, the 3D carrier plate mold laminated with the film and the porous film is subjected to isostatic pressing to obtain a 3D carrier plate mold. D blank, after further sintering and the first post-treatment, can obtain a 3D ceramic part with a porous bonding surface; and by directly performing injection molding on the injection molding feed, a 3D plastic lining with a rough bonding surface can be obtained; under the dispensing process, the obtained 3D ceramic part and the 3D plastic lining can be bonded together. Since the bonding surface of the 3D ceramic part is a porous surface, the bonding surface of the 3D plastic lining is also a rough surface, which greatly increases the contact area between the 3D plastic lining and the 3D ceramic part, greatly improving the bonding strength and reliability of the two. After the second post-treatment, a ceramic-plastic composite cover plate can be obtained. Compared with in-mold injection molding, this process successfully avoids the contradiction between the gap reserved for the fit between the ceramic and the injection mold during in-mold injection molding of 3D ceramic parts and the fact that ceramic is a brittle material and has no deformation, making it possible to reliably composite 3D ceramic parts with 3D plastic linings. The composite cover plate has a high comprehensive yield and can effectively control the manufacturing cost. Furthermore, compared with the traditional dispensing process, the bonding surface area between the 3D ceramic parts and the 3D plastic lining in this process is significantly increased, and the bonding strength and reliability of the two are greatly improved.

[0076] In another aspect of the present invention, the present invention provides a system suitable for the above-mentioned method for preparing a composite cover plate. According to an embodiment of the present invention, referring to Figure 2 The system includes: a casting device 100, a 3D carrier mold 200, an isostatic pressing device 300, a sintering device 400, a first post-processing unit 500, an injection molding device 600, a dispensing device 700 and a second post-processing unit 800.

[0077] According to an embodiment of the present invention, the casting device 100 is used to prepare a diaphragm and a porous diaphragm, respectively. The inventors found that the use of this process to prepare diaphragms and porous diaphragms has many advantages such as fast speed, high degree of automation, high efficiency, uniform organizational structure, and good product quality. It should be noted that the specific preparation method of the first ceramic slurry and the second ceramic slurry is not particularly limited, and those skilled in the art can choose according to actual needs. For example, the ceramic powder that has been finely ground and calcined can be first added to a solvent, and an anti-coagulant, a defoaming agent, a sintering accelerator, etc. can be added if necessary for wet mixing; then an adhesive, a plasticizer, a lubricant, etc. are added for mixing to form a stable slurry with good fluidity. Among them, the specific type of ceramic powder can be at least one of zirconium oxide, aluminum oxide, aluminum nitride, and strontium aluminate, for example, zirconium oxide, and the color of the zirconium oxide ceramic is not particularly limited, and those skilled in the art can choose according to actual needs, for example, it can be selected from at least one of black zirconium oxide ceramics, white zirconium oxide ceramics, dark green zirconium oxide ceramics, pink zirconium oxide ceramics, etc. The ceramic has a noble texture and a jade-like color. The composite cover plate prepared by using the ceramic has a good appearance. It should be noted that the specific formula of the first ceramic slurry and the second ceramic slurry may be consistent or inconsistent, and those skilled in the art can choose according to actual needs. Furthermore, the specific type of the first casting device is not particularly limited, and those skilled in the art can choose according to actual needs, for example, it can be selected from at least one of a carrier tape casting machine and a steel tape casting machine.

[0078] Furthermore, the pore-forming agent added in this step will volatilize during the subsequent sintering process to obtain a 3D ceramic part with a porous bonding surface. Furthermore, the specific type of the pore-forming agent is not particularly limited, and those skilled in the art can select it according to actual needs, for example, it can be selected from at least one of carbon powder, plastic powder, carbonate, sulfur powder, phosphorus powder, and graphite powder, wherein the carbonate is a carbonate that can be decomposed at high temperature, for example, it can be calcium carbonate. The inventor found that when the pore-forming agent is a high-temperature decomposition inorganic substance such as carbonate, this type of substance will decompose and volatilize at high temperature, thereby producing small holes; when the pore-forming agent is a high-temperature ablation inorganic substance such as carbon powder, this type of substance will react with oxygen in the air at high temperature to escape gas, thereby producing small holes; when the pore-forming agent is a high-temperature ablation organic substance such as plastic powder, specifically PVB powder, PVA powder, PC powder, this type of substance will also react with oxygen in the air at high temperature to escape gas, thereby producing small holes.

[0079] Furthermore, the mass ratio of the ceramic powder to the pore-forming agent in the second ceramic slurry is not particularly limited, and those skilled in the art can select it according to actual needs, such as 1.5 to 150:1, for example, 1.5 / 15 / 30 / 45 / 60 / 75 / 90 / 105 / 120 / 135 / 150:1. The inventors found that when the ratio of ceramic powder to pore-forming agent is too low, the content of pore-forming agent is too high, and the volume occupied by the pores in the porous membrane is too large, resulting in a significant decrease in the bonding strength between the porous surface and the 3D plastic lining; when the ratio of ceramic powder to pore-forming agent is too high, the volume occupied by the pores in the porous membrane is too small, resulting in a significant decrease in the pore size and the number of pores on the porous surface, which will also reduce the bonding strength between the 3D ceramic part and the 3D plastic lining.

[0080] According to an embodiment of the present invention, the 3D carrier mold 200 is connected to the casting device 100, and the 3D carrier mold is used for laminating the membrane and the porous membrane, and vacuum encapsulation is performed after lamination. Specifically, the specific method of laminating the membrane and the porous membrane is not particularly limited, for example, one or more membranes can be placed on the 3D carrier mold first, and then one or more porous membranes can be stacked on one or more membranes, or one or more porous membranes can be placed on the 3D carrier mold first, and then one or more membranes can be stacked on one or more porous membranes, and in the lamination process, the number of specific membranes and porous membranes is not particularly limited, and those skilled in the art can select according to actual needs, for example, the specific number of membranes and porous membranes can be determined according to the thickness of the membrane and the porous membrane and the needs of the final product.

[0081] According to an embodiment of the present invention, the isostatic pressing device 300 is connected to the 3D carrier mold 200, and the isostatic pressing device is used to perform isostatic pressing on the 3D carrier mold encapsulating the membrane and the porous membrane to obtain a blank. The inventors found that the density between the products can be increased by performing isostatic pressing on the laminated membrane together with the 3D carrier mold. It should be noted that the specific type of the isostatic pressing device is not particularly limited, such as being selected from at least one of a hot press, a cold press, a cold isostatic press, and a warm isostatic press. Furthermore, the specific conditions of the isostatic pressing treatment are not particularly limited. For example, the pressure of the isostatic pressing treatment can be 20-300 MPa, such as 20 MPa, 50 MPa, 80 MPa, 110 MPa, 140 MPa, 170 MPa, 200 MPa, 230 MPa, 260 MPa, 290 MPa, 300 MPa, and the time can be 0.5-1800 s, such as 0.5 s, 100 s, 300 s, 500 s, 700 s, 900 s, 1100 s, 1300 s, 1500 s, 1700 s, 1800 s. The inventors found that when the isostatic pressing pressure is too small, it is difficult for the cast film to become completely integrated during the pressing process; when the pressure is too high, the equipment purchase cost increases significantly, but the improvement in the pressing effect of the film is not obvious; when the holding time is too short, the cast film is also difficult to become completely integrated during the pressing process; when the pressing time is too long, the performance of the equipment is affected. Similarly, excessively increasing the holding time does not significantly improve the pressing effect of the film.

[0082] According to an embodiment of the present invention, the sintering device 400 has a green body inlet 401 and a ceramic green body outlet 402, and the green body inlet 401 is connected to the isostatic pressing device 300, and is suitable for sintering the green body to obtain a ceramic green body. The inventor found that the porous membrane contains a pore-forming agent, and the pore-forming agent volatilizes during the sintering process, and the porous membrane layer becomes a porous ceramic layer; at the same time, because the membrane and the porous membrane contain substances such as a binder, after sintering, the original sheet-like membrane and the porous membrane and / or the membrane and the membrane and / or the porous membrane and the porous membrane become a tightly integrated whole, and after the first post-processing, a 3D ceramic part with a porous surface is obtained. It should be noted that the specific type of the sintering device is not particularly limited, and those skilled in the art can choose according to actual needs, such as a box furnace and / or a tunnel furnace.

[0083] According to one embodiment of the present invention, the thickness ratio of the porous layer in the 3D ceramic part is not particularly limited, and those skilled in the art can select it according to actual needs, such as not exceeding 1 / 3 of the thickness of the corresponding 3D ceramic part. The inventors found that if the thickness of the porous layer is too large, it will greatly affect the physical properties of the entire product, such as reduced strength, reduced insulation level, and increased water absorption, and that too large a porous layer thickness cannot continuously increase the bonding strength between the ceramic part and the plastic lining.

[0084] According to another embodiment of the present invention, the conditions for the sintering treatment are not particularly limited, and those skilled in the art can select according to actual needs. For example, the sintering temperature of the sintering treatment can be 1000-1700°C, such as 1000°C, 1100°C, 1200°C, 1300°C, 1400°C, 1500°C, 1600°C, and 1700°C, and the insulation time can be 5-480min, such as 5min, 50min, 100min, 150min, 200min, 250min, 300min, 350min, 400min, 450min, and 480min. The inventors found that if the sintering temperature is too low, the density of the ceramic will be too low, and pits will easily appear during the processing; if the sintering temperature is too high, the density of the ceramic will be too low due to over-burning, and the grains will easily grow abnormally, and pits will easily appear during the processing; if the holding time is too short, the sintering degree of the ceramic surface and the interior of the ceramic will easily be inconsistent, affecting the performance of the ceramic; if the holding time is too long, the grains will easily grow abnormally and the sintering cost will be greatly increased.

[0085] According to an embodiment of the present invention, the first post-processing unit 500 has a ceramic body inlet 501 and a 3D ceramic part outlet 502, and the ceramic body inlet 501 is connected to the ceramic body outlet 402, and is suitable for performing a first post-processing on the ceramic body to obtain a 3D ceramic part. The inventors found that after post-processing, a 3D ceramic part with a porous bonding surface can be obtained. It should be noted that the specific content of the post-processing unit is not particularly limited, and those skilled in the art can select it according to actual needs, for example, it may include at least one of a laser cutting device, a CNC device, a thinning device, a cleaning device, an annealing device, a grinding device, a polishing device, and a punching device. The inventors have discovered that laser cutting devices can quickly and efficiently remove burrs or rough holes in ceramic blanks; CNC devices can accurately process the shape, contour and holes of ceramic blanks; large water grinders, double-sided grinders, and single-sided grinders can complete ceramic thinning and control the thickness of ceramic blanks; ultrasonic cleaning machines can clean dust and oil stains on the surface of ceramic blanks; polishing machines can polish the ceramic surface to make the ceramic appearance present a mirror effect; punching equipment such as CNC devices and laser cutting devices can process holes of various shapes on the ceramic surface.

[0086] According to an embodiment of the present invention, the injection molding device 600 has an injection molding feed inlet 601 and a 3D plastic lining outlet 602, and is suitable for injection molding the injection molding feed to obtain a 3D plastic lining. Specifically, a 3D plastic lining with a rough fitting surface can be obtained by patterning, wire drawing, and etching the mold surface through injection molding. It should be noted that the specific type of the injection molding device is not particularly limited, and those skilled in the art can select it according to actual needs, such as at least one of a vertical injection molding machine, a horizontal injection molding machine, and an all-electric injection molding machine.

[0087] According to one embodiment of the present invention, the specific type of injection molding feed is not particularly limited, and those skilled in the art can select it according to actual needs, such as being selected from at least one of glass fiber reinforced polycarbonate, glass fiber reinforced polybutylene terephthalate, and glass fiber reinforced polyamide. Furthermore, in the 3D plastic lining, the roughness of the rough surface can be Ra0.1 to Ra12.5. The inventors found that if the roughness of the rough surface is too small, the bonding strength between the glue layer and the plastic lining will be reduced, resulting in insufficient bonding strength between the ceramic part and the plastic lining; and if the roughness of the rough surface is too large, the thickness of the glue layer will need to be greatly increased and the mechanical properties of the plastic lining will be affected.

[0088] According to an embodiment of the present invention, the glue dispensing device 700 has a 3D ceramic part inlet 701, a 3D plastic lining inlet 702 and a bonding part outlet 703, the 3D ceramic part inlet 701 is connected to the 3D ceramic part outlet 502, the 3D plastic lining inlet 702 is connected to the 3D plastic lining outlet 602, and is suitable for bonding the 3D ceramic part and the 3D plastic lining by a glue dispensing process, so as to obtain a bonding part. Under the glue dispensing process, the obtained 3D ceramic part and the 3D plastic lining can be bonded, because the bonding surface of the 3D ceramic part is a porous surface, and the bonding surface of the 3D plastic lining is also a rough surface, which greatly increases the contact area between the 3D plastic lining and the 3D ceramic part, so that the bonding strength and reliability of the two are greatly improved. Specifically, a glue dispensing machine can be used to dispense glue on the porous bonding surface of the 3D ceramic part, and then the rough bonding surface of the 3D plastic lining is bonded with the porous bonding surface of the 3D ceramic part that has been glued. It should be noted that the specific type of the dispensing device is not particularly limited, and those skilled in the art can select it according to actual needs, such as selecting at least one of a single-component dispensing machine and a two-component dispensing machine.

[0089] According to one embodiment of the present invention, the specific type of glue used in the glue dispensing process is not particularly limited, such as anaerobic glue and / or epoxy glue. The inventors found that anaerobic glue and epoxy glue have strong weather resistance, chemical corrosion resistance and bonding properties. According to an embodiment of the present invention, the second post-processing unit 800 has an adhesive inlet 801 and a composite cover plate outlet 802, and the adhesive inlet 801 is connected to the adhesive outlet 703, and is suitable for performing a second post-processing on the adhesive to obtain a composite cover plate. It should be noted that the specific content of the second post-processing unit is not particularly limited, and those skilled in the art can make a selection according to actual needs. For example, the second post-processing unit may include a pressurized curing device and a deburring device.

[0090] According to the system for preparing a composite cover plate of an embodiment of the present invention, a film and a porous film are prepared respectively by adopting a casting process, and the thickness of the film and the porous film can be freely adjusted according to demand; further, the obtained film and the porous film are laminated and sent to a 3D carrier plate mold after the isolation treatment. During the lamination process, the number and lamination sequence of the film and the porous film can be adjusted according to product requirements. After lamination, vacuum packaging is performed to facilitate subsequent isostatic pressing; further, the 3D carrier plate mold laminated with the film and the porous film is subjected to isostatic pressing to obtain a 3D carrier plate mold. D blank, after further sintering and the first post-treatment, can obtain a 3D ceramic part with a porous bonding surface; and by directly performing injection molding on the injection molding feed, a 3D plastic lining with a rough bonding surface can be obtained; under the dispensing process, the obtained 3D ceramic part and the 3D plastic lining can be bonded together. Since the bonding surface of the 3D ceramic part is a porous surface, the bonding surface of the 3D plastic lining is also a rough surface, which greatly increases the contact area between the 3D plastic lining and the 3D ceramic part, greatly improving the bonding strength and reliability of the two. After the second post-treatment, a ceramic-plastic composite cover plate can be obtained. Compared with in-mold injection molding, this process successfully avoids the contradiction between the gap reserved for the fit between the ceramic and the injection mold during in-mold injection molding of 3D ceramic parts and the fact that ceramic is a brittle material and has no deformation, making it possible to reliably composite 3D ceramic parts with 3D plastic linings. The composite cover plate has a high comprehensive yield and can effectively control the manufacturing cost. Furthermore, compared with the traditional dispensing process, the bonding surface area between the 3D ceramic parts and the 3D plastic lining in this process is significantly increased, and the bonding strength and reliability of the two are greatly improved.

[0091] It should be noted that the characteristics and advantages of the above-mentioned method for preparing a composite cover plate are also applicable to the system for preparing a composite cover plate, which will not be described in detail.

[0092] The present invention is described below with reference to specific embodiments. It should be noted that these embodiments are merely illustrative and do not limit the present invention in any way.

[0093] Example

[0094] (1) preparing a pure black 3Y zirconia cast film A with a specification of 200 mm×100 mm×0.3 mm and a glue content of 9.5% by a casting process;

[0095] (2) preparing a cast porous membrane B with a specification of 200 mm×100 mm×0.005 mm and a glue content of 20% by a cast process;

[0096] (3) The single porous membrane B and the three membranes A are sequentially transferred to the upper and lower surfaces of the 3D carrier mold which have been treated with isolation, such as Figure 3 As shown, and vacuum encapsulate;

[0097] (4) After (3) is completed, the encapsulated membrane together with the 3D carrier mold is placed in a warm water isostatic press for isostatic pressing, the water temperature is 70°C, the holding pressure is 150 MPa, and the holding time is 300 s;

[0098] (5) After (4) is completed, the bag is removed and the green body is placed in a furnace for sintering according to a certain sintering system, wherein the sintering temperature is 1410°C and the heat preservation time is 180 minutes;

[0099] (6) After (5) is completed, the sintered blank is subjected to laser trimming, CNC machining, single-side thinning, cleaning, annealing, grinding (thinning surface), cleaning, annealing, polishing (thinning surface), and drilling to obtain a zirconia 3D ceramic part with a mirror effect on the A side and a porous B side;

[0100] (7) PC + 30% glass fiber injection molding feed is selected and dried and injection molded to obtain a 3D plastic lining;

[0101] (8) Using a glue dispenser, glue the B surface of the 3D ceramic part after step (6) with AB epoxy structural glue, and then bond the 3D plastic lining completed in step (7) to the B surface of the 3D ceramic part after glue dispensing;

[0102] (9) After completing step (8), the bonded parts are pressurized, cured, and deburred to obtain a ceramic-plastic composite cover plate, such as Figure 4 shown.

[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0104] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for preparing a composite cover plate, characterized in that: include: Performing a tape casting process on the first ceramic slurry to obtain a diaphragm; The second ceramic slurry is mixed with a pore-forming agent and then subjected to a tape casting process to obtain a porous membrane; The membrane and the porous membrane are sent to the 3D carrier mold after the isolation treatment, and vacuum-encapsulated, and then isostatically pressed together with the carrier mold, and the obtained green body is sintered and subjected to the first post-treatment to obtain a 3D ceramic part with a porous bonding surface; The injection molding feed is injection molded to obtain a 3D plastic lining with a rough fitting surface; The bonding surface of the 3D ceramic part and the bonding surface of the 3D plastic liner are bonded together by a dispensing process, and the resulting bonded part is subjected to a second post-processing to obtain a composite cover plate. in: In the 3D ceramic part, the thickness of the porous layer does not exceed 1 / 3; The isostatic pressing treatment is selected from at least one of hot pressing, cold pressing, cold isostatic pressing, and warm isostatic pressing; The isostatic pressing treatment is performed at a pressure of 20 to 300 MPa and a time of 0.5 to 1800 s; The sintering temperature of the sintering treatment is 1000-1700°C, and the holding time is 5-480min; The first post-processing is selected from at least one of laser cutting, CNC, thinning, cleaning, annealing, grinding, polishing, and drilling; The injection molding feedstock is selected from at least one of glass fiber reinforced polycarbonate, glass fiber reinforced polybutylene terephthalate, and glass fiber reinforced polyamide; In the 3D plastic lining, the roughness of the rough surface is Ra0.1 to Ra12.5; The glue used in the glue dispensing process is anaerobic glue and / or epoxy glue; The second post-treatment includes pressurizing and curing and deburring.

2. The method according to claim 1, characterized in that The first ceramic slurry and the second ceramic slurry contain ceramic powder, and the ceramic powder is selected from at least one of zirconium oxide and aluminum oxide, aluminum nitride, and strontium aluminate.

3. The method according to claim 1 or 2, characterized in that: The pore-forming agent is selected from at least one of carbon powder, plastic powder, carbonate, sulfur powder, phosphorus powder and graphite powder.

4. The method according to claim 2, characterized in that: The mass ratio of the ceramic powder to the pore-forming agent in the second ceramic slurry is 1.5 to 150:

1.

5. A system applicable to the method for preparing a composite cover plate according to any one of claims 1 to 4, characterized in that: include: A casting device, wherein the casting device is used to prepare a membrane sheet and a porous membrane sheet respectively; A 3D carrier mold, the 3D carrier mold is connected to the casting device, and the 3D carrier mold is used to stack the membrane and the porous membrane, and perform vacuum encapsulation after stacking; An isostatic pressing device, the isostatic pressing device is connected to the 3D carrier mold, and the isostatic pressing device is used to perform isostatic pressing on the 3D carrier mold encapsulating the membrane and the porous membrane to obtain a green body; A sintering device, the sintering device is connected to the isostatic pressing device, and the sintering device has a green body inlet and a ceramic green body outlet; A first post-processing unit, wherein the first post-processing unit has a ceramic body inlet and a 3D ceramic part outlet, wherein the ceramic body inlet is connected to the ceramic body outlet; An injection molding device, wherein the injection molding device has an injection molding feeding inlet and a 3D plastic lining outlet; A glue dispensing device, wherein the glue dispensing device has a 3D ceramic component inlet, a 3D plastic lining inlet and a bonding component outlet, wherein the 3D ceramic component inlet is connected to the 3D ceramic component outlet, and the 3D plastic lining inlet is connected to the 3D plastic lining outlet; The second post-processing unit has a bonding member inlet and a composite cover plate outlet, and the bonding member inlet is connected to the bonding member outlet.

6. The system according to claim 5, characterized in that The casting device is selected from a carrier belt casting machine and / or a steel belt casting machine.

7. The system according to claim 5 or 6, characterized in that: The isostatic pressing device is selected from at least one of a hot press, a cold press, a cold isostatic press, and a warm isostatic press.

8. The system according to claim 5, characterized in that The sintering device is a box furnace and / or a tunnel furnace.

9. The system according to claim 5, characterized in that The first post-processing unit includes at least one of a laser cutting device, a CNC device, a thinning device, a cleaning device, an annealing device, a grinding device, a polishing device, and a punching device.

10. The system according to claim 5, characterized in that The injection molding device is selected from at least one of a vertical injection molding machine, a horizontal injection molding machine, and an all-electric injection molding machine.

11. The system according to claim 5, characterized in that The dispensing device is selected from at least one of a single-component dispensing machine and a two-component dispensing machine.

12. The system according to claim 5, characterized in that The second post-processing unit includes at least one of a pressurizing and curing device and a deburring device.

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