A preparation method of Yiqing porcelain

Abstract

The invention relates to a preparation method of Yiqing porcelain, and belongs to the technical field of ceramic preparation. The method comprises the following steps: S1, after mixing the raw materials, ball milling is performed, and then iron is removed, sieving, filtering, mud kneading, and pressing is performed to form a green body; S2, a colorant formula is prepared according to a specific formula and a ball milling abrasive is used. S3, the green body pressed in step S1 is semi-bisque fired at 600-900°C; S4, the colorant obtained in step S2 is used to prepare a colorant slurry according to a specific gravity of 1.1-1.5, and then the semi-bisque porcelain obtained in step S3 is dipped in glaze and fixed with the colorant slurry, and only the outer glaze is dipped during the dip and fixed color, and the thickness of the glaze layer is 0.2-0.4mm; S5, the semi-bisque porcelain after glazing in step S4 is bisque fired at 1250-1280°C; S6, the green body after bisque firing in step S5 is glazed all over; S7, the semi-finished product after glazing in step S6 is secondary glazed and fired at 1140-1180°C to obtain the Yiqing porcelain. The color of the outer wall of the Yiqing porcelain cup of the present invention is different from the color of the inner part. The ceramics made by this process have a high-end, generous and decent appearance, which is simple but luxurious.

Description

Technical Field

[0001] The invention belongs to the technical field of ceramic preparation, and in particular relates to a preparation method of Yiqing porcelain. Background Art

[0002] With the improvement of people's living standards and appreciation levels, the appearance and decorativeness of daily-use ceramics have attracted more and more attention. Many new types of porcelain have emerged, such as talc porcelain, Lu Yu porcelain, high quartz porcelain and bone china, making daily-use ceramic products show a development trend of multiple styles and grades. The color of porcelain has also gradually enriched with the development of pottery making technology.

[0003] Nowadays, porcelain, especially cups, no matter what glaze color they have, basically has the same glaze color on the outside of the cup as on the inside of the cup, with a single color and poor ornamental value. Summary of the invention

[0004] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art and provide a method for preparing Yiqing porcelain. The present invention adopts a new ceramic color fixing glazing process to develop a Yiqing porcelain cup body with an outer wall whose color is different from the inner color. The ceramics made by this process have a high-end, generous and decent appearance, which is simple yet luxurious.

[0005] The technical solution adopted by the present invention to solve the problems existing in the prior art is:

[0006] A method for preparing Yiqing porcelain comprises the following steps:

[0007] S1. After mixing the raw materials, ball milling is performed, and then iron is removed, sieving, filtering, mud kneading, and pressing to form a green body;

[0008] S2. Prepare the pigment formula according to the specific formula and use ball mill abrasive.

[0009] S3, firing the green body pressed in step S1 at 600-900° C. into semi-bisque porcelain;

[0010] S4, prepare a color slurry with the colorant obtained in step S2, and then use the color slurry to glaze and fix the semi-plain porcelain obtained in step S3, and only glaze the outer layer during glazing and fixing, and the thickness of the glaze layer is 0.2-0.4mm;

[0011] S5, bisque-firing the glazed semi-bisque porcelain after step S4 at 1250-1280° C.;

[0012] S6, glazing the entire body of the body fired in step S5;

[0013] S7, the semi-finished product after glazing in step S6 is subjected to secondary glaze firing at 1140-1180° C. to obtain the Yiqing porcelain.

[0014] Preferably, in step S6, the entire body is glazed with a transparent glaze.

[0015] Preferably, in step S3, a water-blocking agent is evenly applied to the bottom of the fired product with a brush.

[0016] Preferably, in step S1, the ball milling time is 60-70 hours.

[0017] Preferably, in step S1, when kneading the mud, the filter cake is kneaded into mud strips with a moisture content of 20-25%.

[0018] Preferably, in step S2, the ball milling time is 40 hours.

[0019] Preferably, in step S6, the glaze used for glazing is a high-gloss lead-free glaze for bone china.

[0020] Preferably, the chemical weight percentage of the ingredients in the green body is: SiO2: 39-43%; AL2O3: 10-15%; CaO: 21-26%; P2O5: 17-23%; KNaO: 2-5%; Fe2O3: 0.2-0.5%; TiO2: 0.05-0.2%; the remainder is conventional impurities.

[0021] Preferably, in step S4, glazing and color fixing are performed by a glazing system.

[0022] Preferably, the glaze dipping system includes a driving belt, on which are provided a plurality of cup body transfer devices arranged at equal distances, the cup body transfer devices being used to drive the cup body to move, a glaze dipping pool being provided below the driving belt, the lower horizontal portion of the driving belt being located inside the glaze dipping pool, the glaze dipping pool being filled with glaze, and the cup body carried by the cup body transfer device moved to the lower horizontal portion being immersed in the glaze to complete the glazing and color fixing.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The formula is simple and scientifically reasonable. The prepared Yiqing porcelain glaze has high brightness and good thermal stability. The appearance is light blue. The inside of the ceramic is not colored, and the original white color of bone china is retained. The porcelain has a certain degree of light transmittance under light, and the lead and cadmium dissolution rate is zero.

[0025] (2) The prepared Yiqing porcelain increases the color variety of bone china and further improves the grade of bone china. It has a wide range of applicability and is particularly suitable for hotel porcelain and gift tea sets. The light blue exterior and the white interior form a sharp contrast and have a strong visual impact, which is particularly suitable for the aesthetic needs of young people today.

[0026] (3) The preparation method of Yiqing porcelain adopts an oxidizing flame firing system, with semi-bisque firing and the use of special color slurry to glaze and fix the color. The difficulty of production process control is not increased much, it is easy to operate, and is conducive to large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 This is a structural diagram of a glaze dipping system in a method for preparing Yiqing porcelain of the present invention.

[0029] Figure 2 for Figure 1 A partial enlarged view of the middle A.

[0030] Figure 3 This is a structural diagram of the cup body transfer device in the glaze dipping system of the present invention.

[0031] Figure 4 This is a cross-sectional view of the cup body transfer device of the present invention after grabbing the cup body.

[0032] Figure 5 This is a front view of the driving belt of the cup transfer device of the present invention.

[0033] Figure 6 It is a partial cross-sectional view of the inflation position of the airbag of the glazing system of the present invention.

[0034] Figure 7 This is the first structural diagram of the airbag inflation device of the present invention.

[0035] Figure 8 This is the second structural diagram of the airbag inflation device of the present invention.

[0036] In the figure: 1-air bag, 101-air inlet, 2-end, 201-trachea, 2011-exhaust hole, 202-upper baffle, 3-vertical pipe, 4-air inlet pipe, 401-sealing ring, 5-check valve, 6-solenoid valve, 7-electrical connection device, 701-contact, 702-spring seat, 703-guide rod, 704-spring, 705-sleeve, 8-connecting block, 9-rotating shaft, 10-cup body, 11-driving belt, 1101-upper parallel part, 1102-vertical downward moving part, 1103-downward insertion part, 1104-horizontal mounting part, 1105- Inclined downward moving part, 1106-lower horizontal part, 1107-inclined upward moving part, 1108-horizontal separation part, 1109-upward separation part, 11010-vertical upward moving part, 12-guide wheel, 13-back bracket, 14-front conveyor belt, 15-rear conveyor belt, 16-linear module, 17-support frame, 1701-sliding sleeve, 18-telescopic device, 19-telescopic rod, 1901-lower rack, 20-gear, 21-upper rack, 22-U-shaped rod, 23-top ring, 24-inflatable tube, 25-telescopic tube, 26-electrical connection plate, 27-glaze dipping pool. DETAILED DESCRIPTION

[0037] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0038] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention.

[0039] 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The following is a further detailed description of a method for preparing Yiqing porcelain of the present invention in conjunction with the accompanying drawings, but it is not intended to limit the present invention.

[0041] A method for preparing Yiqing porcelain comprises the following steps:

[0042] S1. After mixing the raw materials, ball milling is performed for 60-70 hours. Then iron removal, sieving, filter pressing and mud kneading are performed. During mud kneading, the filter cake is kneaded into mud strips with a moisture content of 20-25%, and the mud strips are pressed to form a green body.

[0043] S2. Prepare the pigment formula according to the specific formula and use ball milling abrasive for 40 hours.

[0044] S3, the green body pressed in step S1 is fired at 600-900°C to form semi-bisque porcelain, and after firing, a water-blocking agent is evenly applied on the bottom of the product with a brush.

[0045] S4, using the colorant obtained in step S2 to prepare a colorant slurry, and then using the colorant slurry to glaze and fix the color of the semi-plain porcelain obtained in step S3, only the outer glaze is dipped during the glazing and fixing process, and the thickness of the glaze layer is 0.2-0.4 mm.

[0046] S5, bisque-firing the glazed semi-bisque porcelain after step S4 at 1250-1280°C.

[0047] S6, glazing the entire body after bisque firing in step S5, the glaze used in the glazing is a high-gloss lead-free glaze for bone china, which is a transparent glaze and does not block the glaze in step S4.

[0048] S7, the semi-finished product after glazing in step S6 is subjected to secondary glaze firing at 1140-1180° C. to obtain the Yiqing porcelain.

[0049] In this embodiment, calcium phosphate and various clay materials such as feldspar, quartz, and Datong soil are used as basic raw materials, and a solid solution is formed by physical and chemical reaction during high-temperature biscuit firing. The chemical weight percentage of the blank is as follows: SiO2: 39-43%; Al2O3: 10-15%; CaO: 21-26%; P2O5: 17-23%; KNaO: 2-5%; Fe2O3: 0.2-0.5%; TiO2: 0.05-0.2%; the remainder is conventional impurities.

[0050] Meanwhile, in step S4, only the outer glaze is dipped, that is, the outer wall of the cup body 10 is dipped in glaze. To achieve this function, in this embodiment, the glaze dipping system is used for dipping and fixing the color.

[0051] Depend on Figures 1 to 8 As shown, the glaze dipping system includes a driving belt 11, on which a plurality of cup body transfer devices arranged at equal intervals are provided, and the cup body transfer devices are used to drive the cup body 10 to move.

[0052] The cup body transfer device shown includes an airbag 1, which is wrapped around the outside of the trachea 201. An upper baffle 202 is provided above the airbag 1. The outer diameter of the upper baffle 202 is larger than the outer diameter of the upper port of the cup body 10. In the free state, the outer diameter of the airbag 1 is smaller than the inner diameter of the cavity of the cup body 10.

[0053] An exhaust hole 2011 is provided on the outer wall of the air pipe 201, and an air inlet hole 101 is provided on the inner wall of the airbag 1. The air inlet hole 101 corresponds to the exhaust hole 2011 one by one and is connected through.

[0054] The air pipe 201 is coaxially fixedly connected with the upper baffle 202, and the two are combined into a terminal 2. A vertical pipe 3 is coaxially fixed above the upper baffle 202, and the vertical pipe 3 is connected to the air pipe 201 through the vertical pipe 3. A horizontally arranged air intake pipe 4 is connected to the vertical pipe 3 through the vertical pipe 3. In order to ensure that no leakage occurs when high-pressure gas is injected into the air intake pipe 4, a sealing ring 401 is provided at the entrance of the recent pipe 4, and a one-way valve 5 is connected in series on the air intake pipe 4 to ensure that the air intake pipe 4 can only take in air but not exhaust air. A solenoid valve 6 is provided above the vertical pipe 3. When the solenoid valve 6 is opened, the airbag 1 is exhausted and flattened.

[0055] When in use, the airbag 1 is inserted into the cup body 10, and the end 2 abuts against the open part of the cup body 10. High-pressure gas is injected into the airbag 1 through the air inlet pipe 4 to expand the airbag 1, and the outer wall abuts against the inner wall of the cup body 10, while also giving the inner wall of the cup body 10 a squeezing force, so that when the cup body transfer device moves, it can drive the cup body 10 to move.

[0056] After the glaze dipping operation is completed, the solenoid valve 6 is opened, the airbag 1 is exhausted to stabilize the pressure, and the squeezing of the cup body 10 is released, and then the cup body 10 is separated from the main body 10.

[0057] The driving belt 11 is supported by a plurality of guide wheels 12, so that the driving belt 11 forms an upper parallel portion 1101 at the top and a lower parallel portion 1106 at the bottom. In the direction of rotation of the driving belt 11, the upper parallel portion 1101, the vertical downward portion 1102, the downward insertion portion 1103, the horizontal installation portion 1104, the inclined downward portion 1105, the lower horizontal portion 1106, the inclined upward portion 1107, the horizontal separation portion 1108, the upward separation portion 1109 and the vertical upward portion 11010 are arranged on both sides of the upper horizontal portion 1101, respectively.

[0058] A plurality of guide wheels 12 are supported by a back support 13 , and a motor is fixed on the back support 13 . The motor drives one of the guide wheels 12 to rotate, making it a driving wheel, and providing power for the driving belt 11 to travel.

[0059] A connecting block 8 is fixed on the top circumferential surface of the vertical tube 3, and a rotating shaft 9 is rotatably arranged on the connecting block 8, and the rotating shaft 9 is inserted into the driving belt 11 or fixedly connected to the driving belt 11. This ensures that the cup body transport device is always in a vertical state under the action of gravity, and the airbag 1 is always arranged vertically downward.

[0060] A glaze dipping pool 27 is provided below the driving belt 11, and the glaze dipping pool 27 is filled with glaze. The lower horizontal portion 1106 of the driving belt 11 is located inside the glaze dipping pool 27, and the cup body 10 carried by the cup body transfer device moved to the lower horizontal portion 1106 is immersed in the glaze to complete the glazing and color fixing.

[0061] A front conveyor belt 14 and a rear conveyor belt 15 are respectively provided at the front and rear ends of the glaze dipping pool 27. The cup body 10 before dipping in glaze is transported by the front conveyor belt 14, and the body 10 after dipping in glaze is transported by the rear conveyor belt 15. The downward insertion portion 1103 and the horizontal installation portion 1104 are located directly above the front conveyor belt 14, and the horizontal separation portion 1108 and the upward separation portion 1109 are located directly above the rear conveyor belt 15.

[0062] An airbag inflation device is provided above the front conveyor belt 14, and the airbag inflation device is arranged corresponding to the horizontal mounting portion 1104. The airbag inflation device includes a support frame 17, and a telescopic device 18 is fixed above the support frame 17. The telescopic device 18 adopts the existing technology, such as an oil cylinder, a pneumatic cylinder or an electric cylinder. A telescopic rod 19 is connected to the kinematic pair of the telescopic device 18, and a lower rack 1901 is fixed to the telescopic rod 19. A gear 20 is meshed and connected above the lower rack 1901, and the gear 20 is rotatably connected to the support frame 17, and an upper rack 21 is meshed above the gear 20. The upper rack 21 and the lower rack 1901 are respectively located on the upper and lower sides of the gear 20, so when the gear 20 rotates, the two racks move in opposite directions or move towards each other.

[0063] The end of the telescopic rod 19 is connected with an air-filling pipe 24, and the air inlet end of the air-filling pipe 24 is connected to the high-pressure gas supply pipeline through a telescopic pipe 25. The air-filling pipe 24 is arranged horizontally and passes through a guide hole on the support frame 17, and the guide hole ensures that the air-filling pipe 24 can only move along its axial direction.

[0064] A U-shaped rod 22 is disposed above the upper rack 21, the U-shaped rod 22 passes around the driving belt 11, a top ring 23 is disposed at the end of the U-shaped rod 22, and the top ring 23 is arranged opposite to the inflation tube 24. The horizontal portion above the U-shaped rod 22 is slidably disposed inside the sliding sleeve 1701, and the sliding sleeve 1701 is fixedly connected to the support frame 17.

[0065] During use, the cup body transfer device moves down along the downward insertion portion 1103, and the cup body 10 moves along the front conveyor belt 14. The two cooperate with each other, and the airbag 1 is gradually inserted into the cup body 10. When the cup body transfer device moves to the horizontal mounting portion 1104, the airbag 1 is completely inserted into the cup body 10. When the cup body 10 moves to the airbag inflation device, the telescopic device 18 works, and the telescopic rod 19 moves forward, driving the air outlet of the inflation tube 24 to be sleeved to the entrance of the air inlet pipe 4. Under the sealing state of the sealing ring 401, the two are connected through. At the same time, the lower rack 1901 drives the gear 20 to rotate, and the gear 20 drives the upper rack 21 to rotate, and the top ring 23 and the inflation tube 24 move toward each other. When the inflation tube 24 is connected to the air inlet pipe 4, the top ring 23 abuts against the vertical tube 3 to prevent the air inlet pipe 4 from detaching during the inflation process.

[0066] After the connection is completed, high-pressure gas is injected into the airbag 1 through the inflation tube 24 , the airbag 1 collides and squeezes the cup body 10 , and the cup body transfer device is fixedly connected to the cup body 10 .

[0067] Since inflation takes a certain amount of time, the cup body 10 is always in a moving state during this period, so a linear module 16 is connected below the support frame 17, and the sliding part of the linear module 16 drives the support frame 17 to move, thereby driving the entire airbag inflation device to move synchronously with the body 10. The linear module 16 is an electric linear module, which is a prior art. A position sensor, such as a photoelectric beam sensor, is provided on the front conveyor belt 14 to detect the position of the cup body 10 and thereby control the action of the airbag inflation device.

[0068] After the cup body transfer device is fixedly connected to the cup body 10, it enters the lower horizontal part 1106 through the guidance of the inclined downward moving part 1105. After entering the lower horizontal part 1106, the cup body 10 is completely immersed in the glaze and begins to be immersed in the glaze and fixed in color. After the glaze is immersed in the glaze and fixed in color, it moves upward by the inclined upward moving part 1107, and is separated from the glaze during the movement. The excess glaze on the cup body 10 will also flow away, ensuring that the thickness of the glaze surface is 0.2-0.4mm.

[0069] At least two power connection plates 26 are provided above the horizontal separation portion 1108 . The power connection plates 26 are fixedly connected to the back support 13 and are connected to a power supply assembly at the rear side of the back support 13 via wires. The power supply assembly may be a battery.

[0070] The solenoid valve 6 is electrically connected to a power connection device 7, which includes two contacts 701. When the cup body transfer device drives the cup body 10 to move to the horizontal separation portion 1108, the two contacts 701 are respectively in contact with the two power connection sheets 26 and conduct electricity. The solenoid valve 6 is opened after being energized, and the high-pressure gas inside the airbag 1 is discharged, thereby releasing the squeeze on the cup body 10.

[0071] In order to ensure close contact. The power connection piece 26 is in an arch bridge shape, and the rear end of the contact 701 is connected to a guide rod 703, which is slidably arranged inside the sleeve 705, and the sleeve 705 is fixedly connected to the shell of the solenoid valve 6. A spring seat 702 is fixed on the guide rod 703, and a spring 704 is sleeved on the guide rod 703, and the spring 704 is located between the spring seat 702 and the shell of the solenoid valve 6. The arch bridge-shaped power connection piece 26 cooperates with the contact 701 pushed by the spring 704 to ensure the reliability of the contact between the contact 701 and the power connection piece 26.

[0072] When the cup body transporting device moves to the inclined upward separation portion 1109 , the airbag 1 completes deflation, and during the upward movement of the cup body transporting device along the upward separation portion 1109 , the airbag 1 is gradually removed from the interior of the cup body 1 .

[0073] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A method for preparing Yiqing porcelain, characterized in that: The following steps are involved: S1. After mixing the raw materials, ball milling is performed, and then iron is removed, sieving, filtering, mud kneading, and pressing to form a green body; S2, prepare the colorant formula according to the specific formula and use the ball mill abrasive; S3, firing the green body pressed in step S1 at 600-900° C. into semi-bisque porcelain; S4, prepare a color slurry with the colorant obtained in step S2, and then use the color slurry to glaze and fix the semi-plain porcelain obtained in step S3, and only glaze the outer layer during glazing and fixing, and the thickness of the glaze layer is 0.2-0.4mm; Glazing and color fixing are performed by a glazing system, the glazing system comprising a driving belt (11), the driving belt being provided with a plurality of cup body transfer devices arranged at equal intervals, the cup body transfer devices being used to drive the cup body (10) to move, a glazing pool (27) being provided below the driving belt (11), the lower horizontal portion (1106) of the driving belt (11) being located inside the glazing pool (27), the glazing pool (27) being filled with glaze, the cup body (10) carried by the cup body transfer device moved to the lower horizontal portion (1106) being immersed in the glaze, and glazing and color fixing are completed; The cup body transfer device comprises an airbag (1), the airbag (1) being wrapped around the outside of the trachea (201), an upper baffle (202) being provided above the airbag (1), the outer diameter of the upper baffle (202) being larger than the outer diameter of the upper port of the cup body (10), and in a free state, the outer diameter of the airbag (1) being smaller than the inner diameter of the cavity of the cup body (10); An exhaust hole (2011) is provided on the outer wall of the air pipe (201), and an air inlet hole (101) is provided on the inner wall of the air bag (1), and the air inlet holes (101) correspond to the exhaust holes (2011) one by one and are connected in a through manner; The air pipe (201) is coaxially fixedly connected to the upper baffle (202), and the two are combined to form an end (2). A vertical pipe (3) is coaxially fixed above the upper baffle (202), and the vertical pipe (3) is connected to the air pipe (201). A horizontally arranged air intake pipe (4) is connected to the vertical pipe (3), and a one-way valve (5) is connected in series to the air intake pipe (4). A solenoid valve (6) is provided above the vertical pipe (3). When the solenoid valve (6) is opened, the air bag (1) is exhausted and collapsed. When in use, the airbag (1) is inserted into the cup body (10), the end (2) is abutted against the open part of the cup body (10), and high-pressure gas is injected into the airbag (1) through the air inlet pipe (4), so that the airbag (1) expands, the outer wall abuts against the inner wall of the cup body (10), and at the same time, a squeezing force is applied to the inner wall of the cup body (10), so that when the cup body transfer device moves, the cup body (10) is driven to move; A connecting block (8) is fixed on the top circumferential surface of the vertical tube (3); the connecting block (8) is rotatably provided with a rotating shaft (9); the rotating shaft (9) is inserted into the driving belt (11) or is fixedly connected to the driving belt (11); A front conveyor belt (14) and a rear conveyor belt (15) are respectively provided at the front and rear ends of the glaze immersion pool (27); an airbag inflation device is provided above the front conveyor belt (14); the airbag inflation device comprises a support frame (17); a telescopic device (18) is fixed above the support frame (17); a telescopic rod (19) is connected to the kinematic pair of the telescopic device (18); an inflation tube (24) is connected to the end of the telescopic rod (19); an air inlet end of the inflation tube (24) is connected to a high-pressure air supply pipeline via a telescopic tube (25); A horizontal separation portion (1108) is provided on the driving belt (11), and the horizontal separation portion (1108) is located directly above the rear conveyor belt (15). At least two power connection plates (26) are provided above the horizontal separation portion (1108), and the power connection plates (26) are fixedly connected to the back support (13) and connected to the power supply assembly on the rear side of the back support (13) via wires; The solenoid valve (6) is electrically connected to a power connection device (7), which includes two contacts (701). When the cup body transfer device drives the cup body (10) to move to the horizontal separation portion (1108), the two contacts (701) respectively contact and conduct electricity with the two power connection sheets (26), and the solenoid valve (6) is opened after being energized, and the high-pressure gas inside the airbag (1) is discharged, thereby releasing the squeezing of the cup body (10); S5, bisque-firing the glazed semi-bisque porcelain after step S4 at 1250-1280° C.; S6, glazing the entire body of the green body after bisque firing in step S5, wherein the entire body of the green body is glazed with a transparent glaze; S7, the semi-finished product after glazing in step S6 is subjected to secondary glaze firing at 1140-1180° C. to obtain the Yiqing porcelain.

2. The method for preparing Yiqing porcelain according to claim 1, characterized in that: In step S3, a water-blocking agent is evenly applied to the bottom of the fired product with a brush.

3. The method for preparing Yiqing porcelain according to claim 1, characterized in that: In step S1, the ball milling time is 60-70 hours.

4. The method for preparing Yiqing porcelain according to claim 1, characterized in that: In step S1, when kneading the mud, the filter cake is kneaded into mud strips with a moisture content of 20-25%.

5. The method for preparing Yiqing porcelain according to claim 1, characterized in that: In step S2, the ball milling time is 40 hours, and the ball milling fineness is ≥75%.

6. The method for preparing Yiqing porcelain according to claim 1, characterized in that: In step S6, the glaze used for glazing is a high-gloss lead-free glaze for bone china.

7. A method for preparing Yiqing porcelain according to any one of claims 1 to 6, characterized in that: The chemical weight percentages of the ingredients of the green body are as follows: SiO2: 39-43%; Al2O3: 10-15%; CaO: 21-26%; P2O5: 17-23%; KNaO: 2-5%; Fe2O3: 0.2-0.5%; TiO2: 0.05-0.2%; the remainder is conventional impurities.

Images