A ceramic sintering furnace and a method of using the same

Abstract

This invention belongs to the field of ceramic sintering technology, specifically relating to a ceramic sintering furnace and its usage method. The ceramic sintering furnace includes a first channel, a second channel, and a transfer mechanism. The first and second channels are two parallel channels physically separated by heat-insulating partitions. The first channel contains a heating chamber, a cooling chamber, and a first conveying mechanism, with the heating and cooling chambers arranged sequentially along the material conveying direction. The second channel contains a cooling chamber and a second conveying mechanism. Placement plates are fixedly connected at equal intervals along the conveying direction to both the first and second conveying mechanisms, and sintering units are placed on the placement plates. The transfer mechanism is located at the transfer port between the first and second channels. This invention uses two independent channels, completing sintering and primary cooling in the first channel and secondary cooling in the second channel. A specific staggered stacking layout is used to stack the ceramic green bodies, effectively improving production capacity and product yield.

Description

Technical Field

[0001] This invention belongs to the field of ceramic sintering technology, specifically relating to a ceramic sintering furnace and its usage method. Background Technology

[0002] In the ceramic production process, sintering is one of the most critical processes that determines the final performance, and this process is usually completed in a sintering furnace.

[0003] Currently used sintering furnaces are generally single-channel. For example, Chinese patent CN118582947A discloses a natural gas tunnel kiln for ceramic production, including a kiln body with a side door on its surface. The inner cavity of the kiln body, away from the side door, has a preheating zone, a sintering zone, and a cooling zone arranged sequentially. The bottom of the inner cavity of the kiln body has an inclined bottom surface, with the end of the inclined bottom surface away from the side door tilting downwards. A placement structure is slidably installed inside the kiln body. Chinese patent CN212133290U discloses a rapid sintering kiln for special ceramic production, including a kiln body. The interior of the kiln body is divided into a preheating chamber, a high-temperature sintering chamber, and a cooling chamber by two partitions. Electric push rods are fixedly installed on one side of each partition, and the telescopic ends of the two electric push rods are fixedly connected to the inner wall of the kiln body. A groove is opened at the bottom of the kiln body, and a slider is slidably connected inside the groove. A placement mechanism is provided at the top of the slider. The kilns disclosed in the aforementioned patents all complete the high-temperature sintering and full-process cooling of green blanks in a single channel. However, the full-process cooling takes a long time, making the cooling time a key bottleneck that is difficult to overcome in terms of production capacity. Most of the time in the sintering furnace is spent waiting for the cooling process, which also limits the utilization rate of the equipment.

[0004] In addition, the current method of stacking ceramic green bodies in a neat and aligned manner can easily form vertical airflow and heat flow short-circuit channels in the cross-section of the channel. The uneven distribution of transverse temperature and atmosphere in the channel causes differences in the microstructure and properties of different positions in the same batch of sintered products, affecting the consistency of the products and the yield.

[0005] Therefore, there is an urgent need to design a ceramic sintering furnace that can improve production capacity and yield. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a ceramic sintering furnace and its method of use.

[0007] The objective of this invention is achieved as follows: a ceramic sintering furnace, comprising a first channel, a second channel, and a transfer mechanism; The first channel and the second channel are two parallel channels formed by being physically separated by a heat-insulating partition. The first channel is equipped with a heating chamber, a cooling chamber, and a first conveying mechanism, and the heating chamber and the cooling chamber are arranged sequentially along the material conveying direction; The second channel is equipped with a cooling chamber and a second conveying mechanism, the second conveying mechanism having the opposite conveying direction to the first conveying mechanism; Each of the first and second conveying mechanisms has a placement plate fixed at equal intervals along its conveying direction, and a sintering unit is placed on the placement plate. The transfer mechanism is located at the transfer port between the first channel and the second channel, and is used to transfer the sintering unit from the first channel to the second channel.

[0008] Furthermore, the sintering unit includes a boat, a firing plate, a ceramic green body, and a pressing plate; The material boat is placed on the placement plate, the firing plate is placed inside the material boat, and multiple layers of ceramic green bodies are stacked on the firing plate. Each layer of ceramic greenware is arranged in three rows. The first and third rows of ceramic greenware each have three columns, while the second row of ceramic greenware has two columns. The number of ceramic greenware in each column is the same. There are gaps between adjacent columns of ceramic greenware. The two columns of ceramic greenware in the second row, when projected along the column direction, respectively cover the gaps between adjacent columns of greenware in the first and third rows. The pressure plate is placed on the topmost ceramic green body.

[0009] Furthermore, the upper surface of the firing plate and the lower surface of the pressing plate are both coated with an isolation coating that is consistent with the material of the ceramic green body.

[0010] Furthermore, an isolation layer is provided between adjacent ceramic green bodies.

[0011] Furthermore, both the first and second conveying mechanisms are chain mesh belts, and both the inlet and outlet of the first and second channels are equipped with lifting doors.

[0012] Furthermore, the transfer mechanism includes a mobile platform, a first baffle, and a second baffle; The mobile platform is located at the discharge port of the first channel and the inlet of the second channel. The first baffle and the second baffle are perpendicular to each other and fixedly connected to the mobile platform. The first baffle is parallel to the first channel and on the same side as the first channel. The second baffle is connected to the end of the first baffle away from the first channel. Two spaced slide rails perpendicular to the first channel are fixedly connected to the mobile platform. A slide plate is slidably connected to the slide rails, and a first pusher assembly is fixedly connected to the side of the slide plate near the first baffle. A second pusher assembly is installed on the side of the second baffle near the second channel, and the position of the second pusher assembly corresponds to the inlet of the second channel. The mobile platform is fixedly connected to a first limiting plate and a second limiting plate. The first limiting plate extends along the slide rail direction and corresponds to the position of the discharge port of the first channel. The second limiting plate extends along the vertical slide rail direction and is located outside the second channel.

[0013] Furthermore, the first pusher assembly includes a first electric push rod and a first push plate; The first electric push rod is installed inside the first baffle, and the output end of the first electric push rod is fixedly connected to the first push plate, which is fixedly connected to the side of the slide plate near the first baffle.

[0014] Furthermore, the second pusher assembly includes a second electric push rod and a second pusher plate; The second electric push rod is installed on the side of the second baffle near the second channel. The output end of the second electric push rod is fixedly connected to the second push plate, and the position of the second push plate corresponds to the inlet of the second channel.

[0015] Furthermore, the ceramic sintering furnace also includes a control unit; The drive mechanisms of the first conveying mechanism, the second conveying mechanism, the lifting door, the first electric push rod, and the second electric push rod are all electrically connected to the control unit.

[0016] The present invention also discloses a method for using the ceramic sintering furnace, comprising the following steps: Step S1: Place the firing plate with the upper surface coated with the isolation coating in the material boat, stack multiple layers of ceramic green bodies on the firing plate, set the isolation layer between adjacent layers of ceramic green bodies, and place the pressing plate with the lower surface coated with the isolation coating on the top layer of ceramic green bodies to obtain the sintering unit. Step S2: Place the sintering unit on the placement plate of the first conveying mechanism. The first conveying mechanism first conveys the sintering unit to the heating chamber for sintering, and then conveys it to the cooling chamber for primary cooling. Step S3: After primary cooling, the sintering unit is conveyed to the slide plate by the first conveying mechanism. The slide plate is pushed between the second channel and the second pusher assembly by the first pusher assembly, and then the sintering unit is pushed onto the placement plate of the second conveying mechanism by the second pusher assembly. Step S4: After primary cooling, the sintering unit is conveyed to the cooling chamber by the second conveying mechanism for further cooling. After cooling, the sintering unit is conveyed to the outside of the cooling chamber through the discharge port of the second channel to obtain the ceramic sintered body. Step S5: Remove the sintering unit containing the stacked ceramic sintered body from the placement plate of the second conveying mechanism and send it to the next process for processing.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention sets up two independent channels. The first channel serves as the channel for sintering and primary cooling of the ceramic green body, while the second channel serves as an independent secondary cooling channel. The entire cooling process is decomposed into a critical cooling stage completed in the first channel and a final cooling stage completed in the second channel. This allows the most time-consuming low-temperature cooling stage to be completed in the independent secondary cooling channel. After the sintering and primary cooling channels complete the critical processes, the next cycle can begin immediately without waiting for the product to slowly cool to room temperature. This can overcome the capacity bottleneck of existing production using a single channel, which is limited by the sintering and full cooling time, and can effectively improve production capacity.

[0018] 2. This invention uses a specific staggered stacking layout to stack ceramic green bodies. Without reducing the total number of rows of ceramic green bodies, the heat flow and protective atmosphere can be evenly penetrated into the gaps between all rows of ceramic green bodies. That is, while maximizing the loading capacity, it can ensure the lateral uniformity of the heat flow and protective atmosphere, thereby improving the product yield. It can effectively balance production capacity, yield, and operational stability.

[0019] 3. The present invention applies an isolation coating of the same material as the ceramic green body to the upper surface of the firing plate and the lower surface of the pressing plate, forming an isolation barrier between the ceramic green body and the firing plate and the pressing plate, preventing mutual adhesion during high-temperature sintering and the inability to separate them after firing. An isolation layer is provided between adjacent layers of ceramic green bodies to prevent adhesion between layers of ceramic green bodies during high-temperature sintering, thus ensuring the yield of the final product. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the ceramic sintering furnace of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the sintering unit. Figure 4 This is an exploded view of the sintering unit; Figure 5 This is a schematic diagram of the transfer mechanism.

[0021] In the diagram: 1-First channel, 101-Heating chamber, 1011-Control unit, 102-Cooling chamber, 103-First conveying mechanism, 2-Second channel, 201-Cooling chamber, 202-Second conveying mechanism, 3-Placement plate, 4-Transfer mechanism, 401-Transfer platform, 402-First baffle, 403-Second baffle, 5-Insulation baffle, 6-Sintering unit, 601-Boat, 602-Firing plate, 603-Ceramic green body, 604-Isolation layer, 605-Pressure plate, 7-Slide rail, 8-Slide plate, 9-First pushing assembly, 901-First electric push rod, 902-First push plate, 10-First limiting plate, 11-Second pushing assembly, 1101-Second electric push rod, 1102-Second push plate, 12-Second limiting plate, 13-Lifting door. Detailed Implementation

[0022] The present invention will now be described in more detail with reference to the accompanying drawings and specific embodiments.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Example 1 See Figure 1 and Figure 2 A ceramic sintering furnace includes a first channel 1, a second channel 2, and a transfer mechanism 4. The first channel 1 and the second channel 2 are two parallel channels physically separated by a heat-insulating partition 5. The first channel 1 is provided with a heating chamber 101, a cooling chamber 102, and a first conveying mechanism 103, with the heating chamber 101 and the cooling chamber 102 arranged sequentially along the material conveying direction. The second channel 2 is provided with a cooling chamber 201 and a second conveying mechanism 202, with the second conveying mechanism 202 conveying in the opposite direction to the first conveying mechanism 103. In this embodiment, a heating component (such as a resistance wire, a silicon molybdenum rod, etc.) is provided in the heating chamber 101, and a cooling component and a cooling component (such as an air-cooling mechanism, a water-cooling jacket, etc.) are respectively provided in the cooling chamber 102 and the cooling chamber 201 to achieve temperature control. These components are all conventional temperature control components, and their specific structures and working principles are well known to those skilled in the art and will not be described in detail here.

[0025] The first channel 1 serves as the channel for sintering and primary cooling of the ceramic green body 603. Primary cooling refers to the rapid cooling of the high-temperature section, which is crucial for the microstructure shaping and initial stress release of the product after high-temperature sintering, as well as the slow cooling stage of the medium-temperature danger zone. The second channel 2 serves as an independent secondary cooling channel, used for the final cooling stage of the product transferred from the first channel 1 that has passed the medium-temperature danger zone, from low temperature to room temperature. The low temperature is usually set not higher than 600°C to ensure that the product is transferred in a state with sufficient structural strength and low thermal stress risk. In this embodiment, by setting up two independent channels, the most time-consuming low-temperature cooling section can be transferred to an independent secondary cooling channel. This allows the sintering and primary cooling channels to start the next cycle immediately after completing the key processes, without waiting for the product to slowly cool to room temperature. This can overcome the capacity bottleneck of existing production using a single channel, which is limited by the sintering and full-process cooling time, and can effectively improve production capacity.

[0026] Both the first conveyor mechanism 103 and the second conveyor mechanism 202 are chain conveyor belts. (See attached image) Figure 1 , Figure 3 and Figure 4 Each of the first conveying mechanism 103 and the second conveying mechanism 202 has a placement plate 3 fixedly connected at equal intervals along its conveying direction. A sintering unit 6 is placed on the placement plate 3. The sintering unit 6 includes a material boat 601, a firing plate 602, ceramic green bodies 603, and a pressing plate 605. The material boat 601 is placed on the placement plate 3, and the firing plate 602 is placed inside the material boat 601. Multiple layers of ceramic green bodies 603 are stacked on the firing plate 602. Each layer of ceramic green bodies 603 is arranged in three rows. The first and third rows each have three columns of ceramic green bodies 603, while the second row has two columns. The number of ceramic green bodies 603 in each column is the same, and there is a gap between adjacent columns of ceramic green bodies 603. The two columns of ceramic green bodies 603 in the second row, projected along the column direction, respectively cover the gaps between adjacent columns of green bodies in the first and third rows. The pressure plate 605 is placed on the topmost ceramic green body 603. This specific "3-2-3" staggered stacking layout allows heat flow and protective atmosphere to penetrate evenly into the gaps of all columns of ceramic green bodies 603 without reducing the total number of columns of ceramic green bodies 603. The specific "3-2-3-2-3" staggered stacking layout can also be selected according to the actual production situation. That is, while maximizing the loading capacity, it can ensure the lateral uniformity of heat flow and protective atmosphere, thereby improving the product yield. It can effectively balance production capacity, yield, and operational stability.

[0027] Both the upper surface of the firing plate 602 and the lower surface of the pressing plate 605 are coated with an insulating coating identical to the material of the ceramic green body. This forms an insulating barrier between the ceramic green body 603 and the firing plate 602 and pressing plate 605, preventing them from sticking together during high-temperature sintering and becoming inseparable after being removed from the furnace. See [link to relevant documentation]. Figure 1 , Figure 3 and Figure 4 An isolation layer 604 is laid between adjacent ceramic green bodies 603 to prevent the ceramic green bodies 603 from sticking together during high-temperature sintering. Specifically, the isolation layer 604 is alumina powder. Its particle size and spreading thickness ensure effective isolation without affecting the uniform shrinkage and heat transfer of the ceramic green bodies 603, thus ensuring the yield of the final product.

[0028] See Figure 1 and 5The transfer mechanism 4 is located at the transfer port between the first channel 1 and the second channel 2, and is used to transfer the sintering unit 6 from the first channel 1 to the second channel 2. The transfer mechanism 4 includes a moving platform, a first baffle 402 and a second baffle 403. The moving platform is located at the discharge port of the first channel 1 and the inlet of the second channel 2. The moving platform is close to the output end of the first conveying mechanism 103 and the input end of the second conveying mechanism 202, so that the sintering unit 6 can be transferred to or removed from the moving platform. The first baffle 402 and the second baffle 403 are perpendicular to each other and are separated. The first baffle 402 is parallel to and on the same side as the first channel 1, and the second baffle 403 is connected to the end of the first baffle 402 away from the first channel 1. Two spaced-apart slide rails 7 perpendicular to the first channel 1 are fixed to the mobile platform. A slide plate 8 is slidably connected to the slide rails 7. A first limiting plate 10 and a second limiting plate 12 are fixed to the mobile platform. The first limiting plate 10 extends along the slide rails 7 and corresponds to the outlet position of the first channel 1. The second limiting plate 12 extends perpendicular to the slide rails 7 and is located at the second channel 1 outlet. On the outer side of channel 2, a first pushing assembly 9 is fixedly connected to the side of the slide plate 8 near the first baffle 402, and a second pushing assembly 11 is installed on the side of the second baffle 403 near the second channel 2. The second pushing assembly 11 is positioned in front of and behind the inlet of the second channel 2. After the ceramic green body 603 is sintered in the heating chamber 101 and cooled by the primary cooling chamber 102, the sintering unit 6 is conveyed to the slide plate 8 by the first conveying mechanism 103. The first pushing assembly 9 pushes the slide plate 8 to abut against the second limiting plate 12. At this time, the slide plate 8 is located between the second channel 2 and the second pushing assembly. Between 11, the sintering unit 6 on the slide plate 8 is pushed onto the placement plate 3 of the second conveying mechanism 202 by the second pushing component 11. The sintering unit 6 is then conveyed to the second channel 2 for further cooling by the second conveying mechanism 202. At this time, the first pushing component 9 drives the slide plate 8 to reset and repeats the above process, so that the sintering units 6 that have completed sintering and primary cooling in the first channel 1 are transferred one by one to the cooling chamber 201 of the second channel 2 for further cooling. The sintering units 6 that have been cooled again are conveyed to the outside of the cooling chamber 201 through the outlet of the second channel 2.

[0029] For details, see Figure 5The first pushing assembly 9 includes a first electric push rod 901 and a first push plate 902. The first electric push rod 901 is installed inside the first baffle 402. The output end of the first electric push rod 901 is fixedly connected to the first push plate 902. The first push plate 902 is fixedly connected to the side of the slide plate 8 near the first baffle 402. The slide plate 8 is moved by the first electric push rod 901. The second pushing assembly 11 includes a second electric push rod 1101 and a second push plate 1102. The second electric push rod 1101 is installed on the side of the second baffle 403 near the second channel 2. The output end of the second electric push rod 1101 is fixedly connected to the second push plate 1102. The position of the second push plate 1102 corresponds to the inlet of the second channel 2. The sintering unit 6 on the slide plate 8 is transferred to the placement plate 3 of the second conveying mechanism 202 by the second electric push rod 1101.

[0030] See Figure 1 The inlet and outlet of the first channel 1 and the second channel 2 are both equipped with lifting doors 13. The lifting doors 13 are opened when the first channel 1 and the second channel 2 are feeding or discharging, and closed during the production process to seal the two channels. This can effectively isolate the external air, prevent the leakage of the internal protective atmosphere and the loss of heat, and ensure that the two channels have independent, pure and stable temperature and atmosphere to achieve high-quality continuous production.

[0031] The drive mechanisms (not shown in the figure) of the first conveying mechanism 103, the second conveying mechanism 202, the lifting door 13, the first electric push rod 901, and the second electric push rod 1101 are all electrically connected to the control unit 1011. (See also...) Figure 1 The control unit 1011 is installed on the outside of the heating chamber 101. Production can be carried out continuously through the coordinated control of the control unit 1011.

[0032] The method of using the ceramic sintering furnace in this embodiment includes the following steps: Step S1: Place the firing plate 602 with the upper surface coated with the isolation coating inside the material boat 601, stack multiple layers of ceramic green bodies 603 on the firing plate 602, lay the isolation layer 604 between adjacent layers of ceramic green bodies 603, and place the pressing plate 605 with the lower surface coated with the isolation coating on the uppermost layer of ceramic green body 603 to obtain the sintering unit 6. Step S2: Place the sintering unit 6 on the placement plate 3 of the first conveying mechanism 103. The first conveying mechanism 103 first conveys the sintering unit 6 to the heating chamber 101 for sintering, and then conveys it to the cooling chamber 102 for primary cooling. Step S3: After primary cooling, the sintering unit 6 is conveyed to the slide plate 8 by the first conveying mechanism 103. The slide plate 8 is pushed between the second channel 2 and the second pusher assembly 11 by the first pusher assembly 9. Then, the sintering unit 6 is pushed onto the placement plate 3 of the second conveying mechanism 202 by the second pusher assembly 11. Step S4: After primary cooling, the sintering unit 6 is conveyed to the cooling chamber 201 by the second conveying mechanism 202 for further cooling. After cooling, the sintering unit 6 is conveyed to the outside of the cooling chamber 201 through the discharge port of the second channel 2 to obtain a ceramic sintered body. Step S5: Remove the sintering unit 6 containing the ceramic sintered body from the placement plate 3 of the second conveying mechanism 202 and send it to the next process for processing.

[0033] Example 2 The only difference between this embodiment and Embodiment 1 is that the stacking layout of the ceramic green body 603 in the sintering unit 6 is different.

[0034] Specifically, in this embodiment, multiple layers of ceramic green bodies 603 are stacked on the firing plate 602. Each layer of ceramic green bodies 603 is distributed in rows a, where a = 3 + (m-1) × 2, and m ≥ 1. The outermost row of ceramic green bodies 603 has b columns, where b = 3 + n, and n ≥ 1. The number of columns of ceramic green bodies 603 in the adjacent row is one less than that of the adjacent row, and the number of columns of ceramic green bodies 603 in all adjacent rows differs by one column. The number of ceramic green bodies 603 in each column is the same. There is a gap between adjacent columns of ceramic green bodies 603. The projection of each column of ceramic green bodies 603 in the row with one less column than the adjacent row covers the gap between adjacent columns of ceramic green bodies 603 in the adjacent row. The pressing plate 605 is placed on the top layer of ceramic green bodies 603.

[0035] This embodiment adopts a specific staggered stacking layout that satisfies the above relationship, such as "4-3-4", "4-3-4-3-4", "5-4-5" or "5-4-5-4-5". The most suitable stacking number combination can be selected according to the actual production situation (such as the size of the two channels, the conveying mechanism, the placement plate, the material boat and the size of the ceramic green body). This allows the sintering furnace to flexibly adapt to different production needs. Under the premise of ensuring the uniformity of heat flow and airflow and structural stability, the space utilization and production capacity of the sintering furnace can be further improved.

[0036] Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense as would be understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation of quantity. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0037] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention.

Claims

1. A ceramic sintering furnace characterized by comprising: Includes the first channel, the second channel, and the transfer mechanism; The first channel and the second channel are two parallel channels formed by being physically separated by a heat-insulating partition. The first channel is equipped with a heating chamber, a cooling chamber, and a first conveying mechanism, and the heating chamber and the cooling chamber are arranged sequentially along the material conveying direction; The second channel is equipped with a cooling chamber and a second conveying mechanism, the second conveying mechanism having the opposite conveying direction to the first conveying mechanism; Each of the first and second conveying mechanisms has a placement plate fixed at equal intervals along its conveying direction, and a sintering unit is placed on the placement plate. The transfer mechanism is located at the transfer port between the first channel and the second channel, and is used to transfer the sintering unit from the first channel to the second channel.

2. The ceramic sintering furnace as described in claim 1, characterized in that, The sintering unit includes a boat, a firing plate, a ceramic green body, and a pressing plate; The material boat is placed on the placement plate, the firing plate is placed inside the material boat, and multiple layers of ceramic green bodies are stacked on the firing plate. Each layer of ceramic greenware is arranged in three rows. The first and third rows of ceramic greenware each have three columns, while the second row of ceramic greenware has two columns. The number of ceramic greenware in each column is the same. There are gaps between adjacent columns of ceramic greenware. The two columns of ceramic greenware in the second row, when projected along the column direction, respectively cover the gaps between adjacent columns of greenware in the first and third rows. The pressure plate is placed on the topmost ceramic green body.

3. The ceramic sintering furnace as described in claim 2, characterized in that, The upper surface of the firing plate and the lower surface of the pressing plate are both coated with an isolation coating that is consistent with the material of the ceramic green body.

4. The ceramic sintering furnace as described in claim 2, characterized in that, An isolation layer is provided between adjacent ceramic green bodies.

5. The ceramic sintering furnace according to any one of claims 1 to 4, characterized in that, Both the first and second conveying mechanisms are chain mesh belts, and both the inlet and outlet of the first and second channels are equipped with lifting doors.

6. The ceramic sintering furnace as described in claim 5, characterized in that, The transfer mechanism includes a mobile platform, a first baffle, and a second baffle. The mobile platform is located at the discharge port of the first channel and the inlet of the second channel. The first baffle and the second baffle are perpendicular to each other and fixedly connected to the mobile platform. The first baffle is parallel to the first channel and on the same side as the first channel. The second baffle is connected to the end of the first baffle away from the first channel. Two spaced slide rails perpendicular to the first channel are fixedly connected to the mobile platform. A slide plate is slidably connected to the slide rails, and a first pusher assembly is fixedly connected to the side of the slide plate near the first baffle. A second pusher assembly is installed on the side of the second baffle near the second channel, and the position of the second pusher assembly corresponds to the inlet of the second channel. The mobile platform is fixedly connected to a first limiting plate and a second limiting plate. The first limiting plate extends along the slide rail direction and corresponds to the position of the discharge port of the first channel. The second limiting plate extends along the vertical slide rail direction and is located outside the second channel.

7. The ceramic sintering furnace as described in claim 6, characterized in that, The first feeding assembly includes a first electric push rod and a first push plate; The first electric push rod is installed inside the first baffle, and the output end of the first electric push rod is fixedly connected to the first push plate, which is fixedly connected to the side of the slide plate near the first baffle.

8. The ceramic sintering furnace as described in claim 7, characterized in that, The second pushing assembly includes a second electric push rod and a second push plate; The second electric push rod is installed on the side of the second baffle near the second channel. The output end of the second electric push rod is fixedly connected to the second push plate, and the position of the second push plate corresponds to the inlet of the second channel.

9. A ceramic sintering furnace as described in claim 8, characterized in that, It also includes a control unit; The drive mechanisms of the first conveying mechanism, the second conveying mechanism, the lifting door, the first electric push rod, and the second electric push rod are all electrically connected to the control unit.

10. A method of using the ceramic sintering furnace as described in claim 9, characterized in that, Includes the following steps: Step S1: Place the firing plate with the upper surface coated with the isolation coating in the material boat, stack multiple layers of ceramic green bodies on the firing plate, set the isolation layer between adjacent layers of ceramic green bodies, and place the pressing plate with the lower surface coated with the isolation coating on the top layer of ceramic green bodies to obtain the sintering unit. Step S2: Place the sintering unit on the placement plate of the first conveying mechanism. The first conveying mechanism first conveys the sintering unit to the heating chamber for sintering, and then conveys it to the cooling chamber for primary cooling. Step S3: After primary cooling, the sintering unit is conveyed to the slide plate by the first conveying mechanism. The slide plate is pushed between the second channel and the second pusher assembly by the first pusher assembly, and then the sintering unit is pushed onto the placement plate of the second conveying mechanism by the second pusher assembly. Step S4: After primary cooling, the sintering unit is conveyed to the cooling chamber by the second conveying mechanism for further cooling. After cooling, the sintering unit is conveyed to the outside of the cooling chamber through the discharge port of the second channel to obtain the ceramic sintered body. Step S5: Remove the sintering unit containing the stacked ceramic sintered body from the placement plate of the second conveying mechanism and send it to the next process for processing.

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