Silicon carbide extruded wind support device and method of receiving

Abstract

The present application relates to the technical field of silicon carbide extrusion equipment, in particular to a wind supporting device for silicon carbide extrusion forming and a supporting method, comprising a support frame, a first supporting table connected to the support frame and connected to the front of a die head of an extruder, a first supporting groove being arranged above the first supporting table, and a second supporting table connected to the support frame and arranged on the side of the second supporting table away from the first supporting table, a second supporting groove being arranged above the second supporting table. The present application keeps the airflow at low temperature or normal temperature under the condition of meeting the pressure by controlling the air source of the wind supporting device, avoids the dry cracking of the surface of the rod caused by the overheated airflow, realizes the lifting and supporting of the long rod, changes the supporting mode of the rod, sets two supporting tables, the second supporting table is responsible for supporting the rod of a predetermined length, and the rod is transferred to the supporting part by overturning the supporting table, and this transfer mode will not cause scratches, bending or distortion of the rod.

Description

Technical Field

[0001] This invention relates to the field of silicon carbide extrusion equipment technology, and more specifically to a wind support device and a receiving method for silicon carbide extrusion molding. Background Technology

[0002] In the silicon carbide extrusion production process, the clay material used is generally clay material containing a certain amount of moisture and plasticity. The clay material comes out of the extruder die, and the receiving device is located at the rear end of the extruder die. During the process from the extruder die to the receiving device, due to the high moisture content, high plasticity, and low strength of the clay material, the rod-shaped material and the receiving device are prone to deformation and surface scratches after friction, resulting in poor molding.

[0003] Existing technologies use air-floating support devices for support, such as the double-layer suspension guide rail device disclosed in CN209615856U. However, current support devices only support short-sized rod-shaped products. If the length of the rod-shaped product is increased, the power of the air pump needs to be increased. A large amount of gas will cause the surface of the mud to dry quickly and crack, and it will not be easy to remove it completely from the support device. If only 10cm-20cm products are produced, frequent stops of extrusion are required for cutting, resulting in a huge waste of labor and time. In addition, the area occupied during drying is large, and the economic cost will increase rapidly.

[0004] Existing technical documents

[0005] Patent Document 1: CN209615856U A Double-Layer Suspended Guide Rail Device for Extruding Sludge Summary of the Invention

[0006] To address the technical problems existing in silicon carbide extrusion in the prior art, the first aspect of the present invention proposes a wind-support device for silicon carbide extrusion molding, comprising:

[0007] Support frame;

[0008] A first support platform is connected to the support frame and connected to the front of the die head of the extruder. A first support groove is provided above the first support platform.

[0009] The second support platform is connected to the support frame and is located on the side of the second support platform away from the first support platform. A second support groove is provided above the second support platform.

[0010] The supporting component is connected to the upper end face of the second supporting platform and is located on one side of the second supporting groove;

[0011] A compressed air source is connected to the first cavity inside the first support platform and the second cavity inside the second support platform;

[0012] The compressed air source includes a compressed air tank, which is connected to the first cavity and the second cavity through a pipe, so that the first cavity and the second cavity have gas at a predetermined pressure. The surfaces of the first support groove and the second support groove are provided with air holes, which are used to release the gas in the first cavity and the second cavity, so that an air gap is formed between the passing bar and the surface of the first support groove or the second support groove.

[0013] The second support platform can rotate relative to the support frame in a direction parallel to the bar stock axis, rotating from a first position to a second position. In the first position, the upper end face of the second support platform is flush with the upper end face of the first support platform, and the second support groove is in the extension direction of the first support groove. In the second position, the upper end face of the second support platform is perpendicular to the upper end face of the first support platform, so that the bar stock in the second support groove can roll onto the surface of the support component.

[0014] Preferably, the bottom of the support frame is provided with a first air pipe and a second air pipe. The pipeline includes a main pipeline and a first branch pipe and a second branch pipe. A pressure gauge is connected to the main pipeline. The first end of the first branch pipe and the second branch pipe are connected to the main pipeline, and the second end is connected to the first air pipe and the second air pipe, respectively.

[0015] Preferably, the support frame is provided with a pipe hole that penetrates its upper and lower end faces, and a rubber sleeve is fixed to the inner wall of the pipe hole. An air pipe is provided at the bottom of the second support platform. When the second support platform is in the first position, the air pipe presses against the upper end face of the rubber sleeve.

[0016] Preferably, the trachea is located at the center of the second support platform, and an air hood is provided inside the second cavity. The air hood is located outside the trachea, and the air hood is configured to guide the gas entering the second cavity through the trachea to the side of the second cavity closer to the first cavity.

[0017] Preferably, the second support groove is configured with a semi-circular arc cross-section that matches the size of the bar stock, and the upper edge of the second support groove is provided with a rounded corner where it meets the upper end face of the second support platform.

[0018] Preferably, the supporting component is configured with an L-shaped cross-section, including a first support plate and a second support plate. The first support plate is attached to the upper surface of the second support platform, and the end of the first support plate near the second support groove is provided with an inclined surface.

[0019] Preferably, the second support platform is provided with a handle on the first side, and the second support platform is configured to rotate from the first side to the second side, from the first position to the second position. The width of the upper end face of the second support platform in the second side region of the second support groove corresponds to the length of the first support plate.

[0020] Preferably, the first support plate can be freely attached to the upper surface of the second support platform and detached from the upper surface of the second support platform.

[0021] Preferably, the length of the second support platform is 1-3m.

[0022] A second aspect of this invention provides a technical solution: a method for receiving silicon carbide extrusion molding, using the aforementioned wind-support device, comprising the following steps:

[0023] Step 1: Connect the gas from the compressed gas source to the first chamber and the second chamber, and maintain the gas pressure in the first chamber and the second chamber at 0.3MPa-0.5MPa and the temperature at 18℃-25℃;

[0024] Step 2: Extrude the silicon carbide rod through the extruder and pass it sequentially through the first support platform and the second support platform until the rod in the second support platform reaches the predetermined length.

[0025] Step 3: The extruder stops extruding silicon carbide rods and cuts the silicon carbide rods between the first support platform and the second support platform;

[0026] Step 4: Place the support component on the second side of the second support groove, flip the second support platform so that it rotates from the first position to the second position, and the bar of predetermined length on the second support platform rolls down to the support component, and transfer the support component and the bar to the drying area.

[0027] Step 5: Rotate the second support platform from the second position to the first position, and repeat steps 2-4 until extrusion is complete.

[0028] Compared with the prior art, the air support device for silicon carbide extrusion molding proposed in this invention controls the air source of the air support device to keep the airflow at a low or normal temperature under the required pressure, avoiding the drying and cracking of the bar surface caused by overheated airflow. It achieves the lifting of long bars and changes the bar receiving method by setting two support platforms. The second support platform is responsible for receiving bars of a predetermined length. After reaching the predetermined length, the water droplets of bar are transferred to the support component by flipping the support platform. This transfer method will not cause scratches, bending or twisting of the bar, and increases the speed of bar removal and the next receiving process, reducing the frequency of extruder pauses. At the same time, long bars can also reduce the area occupied by the drying area. Attached Figure Description

[0029] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0030] Figure 1 This is a schematic diagram of the structure of the silicon carbide extrusion molding wind support device shown in this invention;

[0031] Figure 2 This is a schematic diagram of the compressed air source supplying air to the first and second chambers in the silicon carbide extrusion molding air support device of the present invention.

[0032] Figure 3 This is a schematic diagram of the second support platform in a flipped state relative to the support frame as shown in this invention;

[0033] Figure 4 This is a schematic diagram of the second support platform in the first position as shown in this invention;

[0034] Figure 5 This is a schematic diagram of the tilted state of the second support platform shown in this invention;

[0035] Figure 6 This is a schematic diagram of the second support platform in the second position as shown in this invention;

[0036] Figure 7 This is a schematic diagram of the bar stock falling onto the supporting component as shown in this invention. Detailed Implementation

[0037] To better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0038] Current air-support devices draw outside air into an air pump and then pump it into the air-support structure. They can generally only produce rod-shaped products of 10-20cm. Once this length is reached, extrusion is paused and the rod is cut. The product is then manually removed from the rear end of the air-support device. If the length is larger, the power of the air pump needs to be increased, causing the air pump to overheat and the temperature of the pumped gas to rise. This can easily cause the surface of the mud to dry and crack. Furthermore, the longer the extruded rod, the more difficult it is to remove it intact from the air-support device without damage. It should be understood that the shorter the rod product, the more frequently the extruder needs to be paused, which leads to a decrease in product production efficiency.

[0039] This invention changes the air source of the wind-support structure, using compressed air, such as air stored in a compressed air tank, so that the pump air volume can support the length of the bar stock, which is 1-2m long. In addition, for such long bar stock products, by changing the bar stock picking method, the bar stock is rolled onto the supporting component by flipping, so as to achieve the transfer of the bar stock between the wind-support structure and the drying structure without damage.

[0040] [Silicon carbide extrusion molding air support device]

[0041] Combination Figure 1-3 As shown, the first aspect of the present invention provides a pneumatic support device for silicon carbide extrusion molding, including a support frame 10, a first support platform 20, a second support platform 30, a support component 40, and a compressed air source 50. The support frame 10 is designed to provide a suitable support height for the first support platform 20 and the second support platform 30, especially corresponding to the height in front of the die head of the extruder 100. The first support platform 20 is connected to the support frame 10 and connected to the front of the die head of the extruder 100. A first support groove 21 is provided above the first support platform 20. The second support platform 30 is connected to the support frame 10 and is located on the side of the second support platform 30 away from the first support platform 20. A second support groove 33 is provided above the second support platform 30.

[0042] The die head of the extruder 100 is set to the shape of a water droplet cross section. The extruded product cross section is a water droplet shape, i.e., a water droplet column. Along its axial direction, the lower half of the water droplet column is an arc shape, and the upper half is a right triangle.

[0043] Thus, the first support platform 20 is set between the extruder 100 and the second support platform 30, mainly serving as a transition. The length of the first support platform 20 is 20-30cm, and the length of the second support platform 30 is 1-3m. The purpose of the second support platform 30 is to support the water droplet bar product of a predetermined length. When the water droplet bar product extruded by the extruder 100 reaches the predetermined length on the second support platform 30, the water droplet bar is cut between the first support platform 20 and the second support platform 30.

[0044] Furthermore, the supporting component 40 is connected to the upper end face of the second supporting platform 30 and is located on one side of the second supporting groove 33; the compressed air source 50 is connected to the first cavity 201 in the first supporting platform 20 and the second cavity 301 in the second supporting platform 30.

[0045] Optionally, the compressed air source 50 includes a compressed air tank, which is connected to the first cavity 201 and the second cavity 301 through a pipe, so that the first cavity 201 and the second cavity 301 contain gas with a predetermined pressure. The surfaces of the first support groove 21 and the second support groove 33 are provided with air holes, which are used to release the gas in the first cavity 201 and the second cavity 301, so that an air gap is formed between the passing bar and the surface of the first support groove 21 or the second support groove 33.

[0046] In this design, the air holes in the first support groove 21 and the second support groove 33 are linearly arranged at the bottom of the support groove, with a spacing of 40mm between each air hole and a diameter of 4-5mm for each air hole. In this way, the air holes are located in the center of the bottom, and the water droplet rod will not be twisted from side to side due to uneven airflow.

[0047] In addition, supplying air to the first chamber 201 and the second chamber 301 through a compressed air tank can avoid the problem of airflow heating caused by the continuous operation of the air pump. Optionally, the pressure of the gas pumped into the first chamber 201 and the second chamber 301 by the compressed air tank is 0.3MPa-0.5MPa, and the temperature is 18℃-25℃. This airflow will not cause the surface of the bar stock to dry and deform, and it can also support the bar stock so that the bar stock does not come into contact with the first support groove 21 and the second support groove 33, thus avoiding scratches. Under these conditions, the bar stock can be continuously transported forward in the second support groove 33 to the predetermined length.

[0048] In an optional embodiment, the bottom of the support frame 10 is provided with a first air pipe 22 and a second air pipe 35. The pipe includes a main pipe and a first branch pipe and a second branch pipe. A pressure gauge is connected to the main pipe. The first end of the first branch pipe and the second branch pipe are connected to the main pipe, and the second end is connected to the first air pipe 22 and the second air pipe 35, respectively.

[0049] Thus, by controlling the valves on the main pipeline with a pressure gauge, the gas pressure is kept within a suitable range. In addition, flow valves are installed on the first and second branch pipes respectively to distribute the flow rate of the gas entering the first cavity 201 and the second cavity 301. The flow rate ratio of the first and second branch pipes is matched with the length ratio of the first support platform 20 and the second support platform 30.

[0050] Combination Figure 3-4 As shown, the support frame 10 is provided with a pipe hole that passes through its upper and lower end faces. A rubber sleeve 11 is fixed to the inner wall of the pipe hole. An air pipe 35 is provided at the bottom of the second support platform 30. When the second support platform 30 is in the first position, the air pipe 35 presses against the upper end face of the rubber sleeve 11.

[0051] Thus, when the second support platform 30 rotates from the first position to the second position or from the second position to the first position, the airflow in the second branch pipe remains flowing and will not affect the airflow in the first branch pipe. Therefore, the water droplet bar on the first support platform 20 is in a stable state. At the same time, this design allows the airflow to enter the second cavity 301 in a timely manner when the second support platform 30 is in the first position, forming an airflow in the second support groove 33 to support the bar entering the second support groove 33.

[0052] Preferably, the trachea 35 is located in the center of the second support platform 30, and an air hood 34 is provided inside the second cavity 301. The air hood 34 is located outside the trachea 35 and is configured to guide the gas entering the second cavity 301 through the trachea 35 to the side of the second cavity 301 close to the first cavity 201.

[0053] The air hood 34 is positioned at an angle above the air pipe 35, so that the airflow is guided by the air hood 34 to flow to the left.

[0054] Combination Figure 2 As shown, the airflow is preferentially supplied to the left side of the second support platform 30 to ensure that when the mud enters the left end of the second support groove 33, there is enough airflow to support the mud. As the mud moves to the right, the airflow flows to the right due to the high pressure on the left side of the second cavity 301. Therefore, the mud is continuously supported, ensuring that the mud will not come into contact with the second support platform 30 and cause scratches.

[0055] Furthermore, in combination Figure 4-6 As shown, the second support platform 30 can rotate relative to the support frame 10 in a direction parallel to the bar stock axis, rotating from the first position to the second position. In the first position, the upper end face of the second support platform 30 is flush with the upper end face of the first support platform 20, and the second support groove 33 is located in the extension direction of the first support groove 21. In the second position, the upper end face of the second support platform 30 is perpendicular to the upper end face of the first support platform 20, so that the bar stock in the second support groove 33 can roll onto the surface of the support component 40.

[0056] Optionally, the second support platform 30 is provided with a rotating shaft 31 at both ends, with the rotating shaft at the first end connected to the first support platform 20 and the rotating shaft 31 at the second end connected to the support frame 10.

[0057] Thus, in the first position, the bar stock can move smoothly from the first support platform 20 to the second support platform 30. When the bar stock reaches the predetermined length on the surface of the second support platform 30, the extrusion of the extruder 100 is paused. The second support platform 30 cuts the bar stock between the first support platform 20 and then rotates the second support platform 30 from the first position to the second position, so that the bar stock in the second support groove 33 can roll onto the surface of the support member 40 and be supported by the support member 40. This method of transferring the bar stock will not cause scratches or damage such as twisting or bending on the surface of the bar stock.

[0058] Combination Figure 4As shown, the second support groove 33 is configured with a semi-circular cross-section that matches the size of the bar stock. A rounded corner 332 is provided at the junction of the upper edge of the second support groove 33 and the upper end face of the second support platform 30. The upper part of the air outlet 331 on the second support groove 33 has a rounded corner, which makes the air outlet more uniform and wider, reduces the impact on the mud material, and allows a stable air gap to be formed between the mud material and the second support groove 33.

[0059] Optionally, depending on the structural shape of the teardrop column product, the supporting component 40 is configured with an L-shaped cross section, including a first supporting plate 41 and a second supporting plate 42. The first supporting plate 41 is attached to the upper surface of the second supporting platform 30, and the end of the first supporting plate 41 near the second supporting groove 33 is provided with an inclined surface 441.

[0060] Furthermore, a handle 32 is provided on the first side of the second support platform 30. The second support platform 30 is configured to rotate from the first side to the second side, from the first position to the second position. The width of the upper end face of the second support platform 30 in the second side region of the second support groove 33 corresponds to the length of the first support plate 41.

[0061] The handle 32 allows the user to hold the handle 32 and flip the second support platform 30.

[0062] like Figure 7 As shown, when the second support platform 30 rotates from the first position to the second position, the teardrop bar material detaches from the second support groove 33 and rotates to the right. First, the protruding structure at the right end of the teardrop bar material rolls at the rounded corner 332 of the second support groove 33 and rolls along the inclined surface 441 of the first support plate 41 to the upper end of the first support plate 41, until the two inclined surfaces of the upper part of the teardrop bar material are respectively attached to the upper end surface of the first support plate 41 and the left end surface of the second support plate 42. During this process, the 1-2m long teardrop bar material does not deform, scratch or bend, which can ensure the integrity of the structure and complete the transfer without damage.

[0063] Furthermore, the first support plate 41 can be freely attached to the upper surface of the second support platform 30 and detached from the upper surface of the second support platform 30.

[0064] In this way, the user can manually attach the L-shaped support component 40 to the upper surface of the second support platform 30. When the right end face of the first support plate 41 and the right end face of the second support platform 30 are aligned, the inclined surface 441 of the first support plate 41 is positioned to receive the rolling water droplet bar material, and the two right-angled end faces of the water droplet bar material are attached to the upper surface of the first support plate 41 and the left end face of the second support plate 42. Then, the user can manually transfer the support component 40 to the drying area. By flipping the support component 40, the water droplet bar material can be rolled and transferred to the drying area. The support component 40 can be reused.

[0065] In the above embodiment, the length of the second support platform 30 is 1-3m, that is, it can support bar stock up to 3m long, which is more than 10 times that of the current 10-20cm bar stock. The frequency of extruder pauses is greatly reduced and the product production efficiency is significantly improved.

[0066] [Contracting Methods for Silicon Carbide Extrusion Molding]

[0067] A second aspect of this invention provides a technical solution: a method for receiving silicon carbide extrusion molding, using the aforementioned wind-support device, comprising the following steps:

[0068] Step 1: Connect the gas from the compressed gas source 50 to the first chamber 201 and the second chamber 301, and maintain the pressure of the gas in the first chamber 201 and the second chamber 301 at 0.3MPa-0.5MPa and the temperature at 18℃-25℃.

[0069] Step 2: Extrude the silicon carbide rod through the extruder 100 and pass it sequentially through the first support platform 20 and the second support platform 30 until the rod in the second support platform 30 reaches the predetermined length.

[0070] Step 3: The extruder 100 stops extruding silicon carbide rods and cuts the silicon carbide rods between the first support platform 20 and the second support platform 30.

[0071] Step 4: Place the support component 40 on the second side of the second support groove 33, flip the second support platform 30 so that it rotates from the first position to the second position, and the bar of predetermined length on the second support platform 30 rolls down to the support component 40. Transfer the support component 40 and the bar to the drying area.

[0072] Step 5: Rotate the second support platform 30 from the second position to the first position, and repeat steps 2-4 until extrusion is complete.

[0073] Optionally, depending on the production season, airflow, and temperature, before production, the intermediate parameters can be used for extrusion based on a pressure of 0.3MPa-0.5MPa. After extrusion, the surface condition of the bar stock can be observed, and the pressure can be further fine-tuned based on the observation until the extruded bar stock reaches the expected state.

[0074] During production according to the above steps, two workers are required. The first worker stands on the side of the second support platform 30 with handle 32 and is responsible for controlling the extruder 100 and flipping the second support platform 30. The second worker is responsible for placing the support component 40 on the second support platform 30, cutting the bar stock, and transferring the bar stock held on the support component 40 to the drying area.

[0075] In conjunction with the above embodiments, this invention controls the air source of the air-supporting device to maintain the airflow at a low or normal temperature while meeting the required pressure, avoiding overheating airflow that could cause dry cracking on the surface of the bar stock. This enables the lifting of long bars and changes the way the bars are received. Two support platforms are set up, with the second platform responsible for receiving bars of a predetermined length. Once the predetermined length is reached, the water droplets of the bar stock are transferred to the support component by flipping the support platform. This transfer method does not cause scratches, bending, or twisting to the bar stock and increases the speed of bar stock removal and the next receiving process, reducing the frequency of extruder pauses. At the same time, long bars can also reduce the area occupied by the drying area.

[0076] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A silicon carbide extrusion molding pneumatic support device, characterized in that, include: Support frame (10); The first support platform (20) is connected to the support frame (10) and connected to the front of the die head of the extruder (100). The first support platform (20) is provided with a first support groove (21) above it. The second support platform (30) is connected to the support frame (10) and is located on the side of the first support platform (20) away from the extruder (100). A second support groove (33) is provided above the second support platform (30). The supporting component (40) is connected to the upper end face of the second supporting platform (30) and is located on one side of the second supporting groove (33); Compressed air source (50) is connected to the first cavity (201) in the first support platform (20) and the second cavity (301) in the second support platform (30). The compressed air source (50) includes a compressed air tank, which is connected to the first cavity (201) and the second cavity (301) through a pipe, so that the first cavity (201) and the second cavity (301) have gas with a predetermined pressure. The surfaces of the first support groove (21) and the second support groove (33) are provided with air holes, which are used to release the gas in the first cavity (201) and the second cavity (301), so that an air gap is formed between the passing bar and the surface of the first support groove (21) or the second support groove (33). The second support platform (30) can rotate relative to the support frame (10) in a direction parallel to the bar axis, rotating from the first position to the second position. In the first position, the upper end face of the second support platform (30) is flush with the upper end face of the first support platform (20), and the second support groove (33) is in the extension direction of the first support groove (21). In the second position, the upper end face of the second support platform (30) is perpendicular to the upper end face of the first support platform (20), so that the bar in the second support groove (33) can roll onto the surface of the support component (40).

2. The silicon carbide extrusion molding air support device according to claim 1, characterized in that, The bottom of the support frame (10) is provided with a first air pipe (22) and a second air pipe. The pipe includes a main pipe and a first branch pipe and a second branch pipe. A pressure gauge is connected to the main pipe. The first end of the first branch pipe and the second branch pipe are connected to the main pipe, and the second end is connected to the first air pipe (22) and the second air pipe, respectively.

3. The silicon carbide extrusion molding air support device according to claim 2, characterized in that, The support frame (10) is provided with a pipe hole that penetrates its upper and lower end faces. A rubber sleeve (11) is fixed to the inner wall of the pipe hole. An air pipe is provided at the bottom of the second support platform (30). When the second support platform (30) is in the first position, the air pipe presses against the upper end face of the rubber sleeve (11).

4. The silicon carbide extrusion molding air support device according to claim 3, characterized in that, The trachea is located in the center of the second support platform (30). An air hood (34) is provided inside the second cavity (301). The air hood (34) is located outside the trachea. The air hood (34) is configured to guide the gas entering the second cavity (301) through the trachea to the side of the second cavity (301) close to the first cavity (201).

5. The silicon carbide extrusion molding air support device according to claim 1, characterized in that, The second support groove (33) is configured with a semi-circular cross section and matches the size of the bar stock. The upper edge of the second support groove (33) is provided with a rounded corner where it meets the upper end face of the second support platform (30).

6. The silicon carbide extrusion molding air support device according to claim 1, characterized in that, The supporting component (40) is configured with an L-shaped cross section, including a first support plate (41) and a second support plate (42). The first support plate (41) is attached to the upper surface of the second support platform (30), and the first support plate (41) has an inclined surface at one end near the second support groove (33).

7. The silicon carbide extrusion molding air support device according to claim 6, characterized in that, The second support platform (30) is provided with a handle (32) on the first side. The second support platform (30) is configured to rotate from the first side to the second side, from the first position to the second position. The width of the upper end face of the second support platform (30) in the second side area of ​​the second support groove (33) corresponds to the length of the first support plate (41).

8. The silicon carbide extrusion molding air support device according to claim 6 or 7, characterized in that, The first support plate (41) can be freely attached to the upper surface of the second support platform (30) and detached from the upper surface of the second support platform (30).

9. The silicon carbide extrusion molding air support device according to claim 1, characterized in that, The length of the second support platform (30) is 1-3m.

10. A method for receiving silicon carbide extrusion molding, characterized in that, The air support device for silicon carbide extrusion molding according to any one of claims 1-9 includes the following steps: Step 1: Connect the gas from the compressed gas source (50) to the first chamber (201) and the second chamber (301), and keep the pressure of the gas in the first chamber (201) and the second chamber (301) at 0.3MPa-0.5MPa and the temperature at 18℃-25℃; Step 2: Extrude the silicon carbide rod through the extruder (100) and pass it sequentially through the first support platform (20) and the second support platform (30) until the rod in the second support platform (30) reaches the predetermined length; Step 3: The extruder (100) stops extruding silicon carbide rods and cuts the silicon carbide rods between the first support platform (20) and the second support platform (30); Step 4: Place the support component (40) on the second side of the second support groove (33), flip the second support platform (30) so that it rotates from the first position to the second position, and the bar of predetermined length on the second support platform (30) rolls down to the support component (40), and transfer the support component (40) and the bar to the drying area. Step 5: Rotate the second support platform (30) from the second position to the first position, and repeat steps 2-4 until extrusion is complete.

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