Silicon carbide extrusion molding device and extrusion molding process

Abstract

The present invention discloses a silicon carbide extrusion molding device and an extrusion molding process, comprising a base, a device box and a round seat are fixedly connected to the top of the base, a shell is fixedly connected between the device box and the round seat, an extrusion screw is rotatably connected inside the shell, and a first motor is fixedly connected inside the device box. The present invention adjusts the positions of the remaining molds on the assembly disk so that they are located on one side of the shell, which is convenient for replacing the molds and producing silicon carbide materials of different shapes; and supports the release film by arranging a frame, a side plate, a support plate, an unwinding roller, a third motor, a release film, a return frame, a first electric push rod, a fixed plate, a T-shaped rubber extrusion plate, a cutter, a fourth motor, a first pulley, a belt, a second pulley, a moving frame, a second electric push rod, a clamping plate, a baffle and a laser distance sensor.

Description

Technical Field

[0001] The invention relates to the technical field of silicon carbide processing equipment, and in particular to a silicon carbide extrusion molding device and an extrusion molding process. Background Art

[0002] Silicon carbide extrusion molding is a process that utilizes the characteristics of silicon carbide materials and extrude silicon carbide materials through extrusion mechanical force. The principle of silicon carbide extrusion molding is: under the action of the extruder, the silicon carbide material passes through the extrusion port of the extruder and the internal space of the mold to finally form the required product shape. The advantages of silicon carbide extrusion molding are: the surface of the extruded product is smooth and the precision is high; the structure of the extruded product is compact and the weight is light; the extruded product can save materials and save costs; after extrusion molding, silicon carbide needs to be dried to further shape it.

[0003] In the prior art, since silicon carbide material is extruded through a mold, when silicon carbide material of different shapes is needed, different molds need to be replaced. The disassembly and installation of the mold results in a large time cost and reduced production efficiency. In addition, the silicon carbide material needs to be supported after extrusion to facilitate subsequent unloading. Since the surface of the metal support is relatively rough, even after fine grinding and smooth surface, it will continue to degrade during subsequent use, which affects the effect of silicon carbide extrusion molding. Therefore, we propose a silicon carbide extrusion molding device and extrusion molding process to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a silicon carbide extrusion molding device and an extrusion molding process.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A silicon carbide extrusion molding device and an extrusion molding process, comprising a base, a device box and a round seat are fixedly connected at the top of the base, a shell is fixedly connected between the device box and the round seat, an extrusion screw is rotatably connected inside the shell, a first motor is fixedly connected inside the device box, an outer wall of an output shaft of the first motor is fixedly connected to an outer wall of the extrusion screw, a second motor is fixedly connected at the top of the base, a spur gear is fixedly connected to the outer wall of the output shaft of the second motor, a circular groove is provided on the outer wall of the circular groove, an assembly disk is rotatably connected to the inner wall of the assembly disk, an annular rack is fixedly sleeved on the outer wall of the assembly disk, and a space between the spur gear and the annular rack is provided. The top of the base is fixedly connected to a frame, the outer wall of the frame is fixedly connected to a side plate, the bottom of the side plate is rotatably connected to a rotating shaft, the outer wall of the rotating shaft is fixedly connected to a support plate, the outer wall of the base is fixedly connected to a unwinding roller and a third motor, the outer wall of the unwinding roller is wrapped with a release film, the bottom of the support plate is fixedly connected to a return frame, the inner wall of the return frame is fixedly connected to a first electric push rod, the top of the output end of the first electric push rod is fixedly connected to a fixed plate, the outer wall of the fixed plate is fixedly connected to a T-shaped rubber extrusion plate and a cutter, the outer wall of the side plate is provided with a moving mechanism, and a mixing mechanism is provided inside the feed box.

[0007] Preferably, the moving mechanism includes a first pulley, an outer wall of the side plate is fixedly connected to a fourth motor, the top of the fourth motor output shaft is fixedly connected to the outer wall of the first pulley, the outer wall of the first pulley is transmission connected to a belt, one end of the belt is transmission connected to the second pulley, the outer wall of the second pulley is rotatably connected to a T-plate, the outer wall of the T-plate is fixedly connected to the outer wall of the side plate, the outer wall of the belt is fixedly connected to a moving frame with a hollow structure, the inner wall of the moving frame is fixedly connected to a second electric push rod, the bottom of the output end of the second electric push rod is fixedly connected to a splint, the outer wall of the outer shell is fixedly connected to a feed box, the outer wall of the side plate is fixedly connected to a baffle, the outer wall of the baffle is fixedly connected to a laser ranging sensor, the laser ranging sensor detects the moving distance of the moving frame, so as to facilitate the subsequent pulling of a sufficiently long release film, and the silicon carbide material is supported by the support plate and the release film.

[0008] Preferably, the mixing mechanism includes a fifth motor, the outer wall of the feed box is fixedly connected to an equipment frame, the inner wall of the equipment frame is fixedly connected to the outer wall of the fifth motor, one end of the output shaft of the fifth motor is fixedly connected to a rotating shaft, the outer wall of the rotating shaft is evenly fixedly connected to a plurality of flip leaves, the outer wall of the rotating shaft is rotatably sleeved with a top frame, the outer wall of the top frame is fixedly connected to the inner wall of the feed box, the outer wall of the rotating shaft is fixedly sleeved with a main gear, the outer wall of the main gear is meshingly connected with a slave gear, the outer wall of the slave gear is fixedly connected with a vertical shaft, one end of the vertical shaft passes through the outer wall of the top frame and is fixedly connected to a screw conveying rod, a feeding hole is opened on the top of the feed box, the raw materials, sintering aid powder and antioxidant are mixed and stirred by arranging flip leaves and screw conveying rods, and are conveyed into the outer shell through the discharge hole.

[0009] Preferably, a circular hole is opened on the outer wall of the equipment box, the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the first motor, and a plurality of molds are evenly installed on the outer wall of the assembly disk. The first motor is arranged to rotate the extrusion screw to continuously extrude the raw material.

[0010] Preferably, a through hole is opened on the outer wall of the round seat, and the inner wall of the through hole is rotatably connected to the outer wall of the second motor output shaft. By arranging the second motor to rotate the assembly disk, multiple molds can be switched without multiple installation and disassembly.

[0011] Preferably, an annular groove is provided on the outer wall of the round seat, and an annular block is rotatably connected to the inner wall of the annular groove. The outer wall of the annular block is fixedly connected to the outer wall of the assembly disk. A long groove is provided on the outer wall of the side plate, and the inner wall of the long groove is slidably connected to the outer wall of the belt. The annular groove and the annular block assist the assembly disk in rotating.

[0012] Preferably, the outer walls of the movable frame and the support plate are both provided with rectangular grooves, the inner walls of the rectangular grooves are slidably connected to the outer wall of the release film, the outer wall of the frame is fixedly connected to a servo motor, the outer wall of the servo motor output shaft is fixedly connected to the outer wall of the rotating shaft, and the support plate is rotated by setting the servo motor and rotating, and the silicon carbide material on the release film is unloaded after the support plate rotates.

[0013] Preferably, a sliding hole is provided on the outer wall of the feed box, and the inner wall of the sliding hole is rotatably connected to the outer wall of the output shaft of the fifth motor.

[0014] Preferably, a bearing is fixedly sleeved on the outer wall of the vertical shaft, the outer ring of the bearing is fixedly connected to the inner wall of the top frame, an annular guide plate is fixedly connected to the inside of the feed box, a feed hole is opened on the outer wall of the outer shell, the annular guide plate and the inner wall of the feed hole are both slidably connected to the outer wall of the spiral conveying rod, and the vertical shaft is assisted to rotate by setting a bearing.

[0015] A silicon carbide extrusion molding process, using any one of the silicon carbide extrusion molding devices described above, comprises the following steps:

[0016] S1: The raw materials, sintering aid powder and antioxidant are fed into the feed box through the feed hole, wherein the sintering aid powder is mainly used for drying and shaping the silicon carbide material to be subsequently formed; the antioxidant improves the anti-oxidation effect of the silicon carbide material.

[0017] S2: The fifth motor is running, the rotating shaft and the flip blade rotate to mix the raw material, sintering aid powder and antioxidant, and drive the spiral conveying rod to rotate to further mix the raw material, sintering aid powder and antioxidant, and at the same time convey them into the shell through the discharge hole.

[0018] S3: The first motor rotates to rotate the extrusion screw, and the raw material is extruded from one of the molds on the assembly disk. When the second motor operates, the positions of the remaining molds on the assembly disk are adjusted to be located on one side of the shell, so as to facilitate the replacement of the molds and produce silicon carbide materials of different shapes.

[0019] S4: After the silicon carbide material is extruded from the mold after molding, it is supported by the support plate, and the fourth motor and the third motor are operated first to move the release film through the moving frame. The release film is located on the support plate, so that the release film matches the length of the silicon carbide material extrusion, and contacts the silicon carbide material through the release film. The moving distance of the moving frame is detected by the laser ranging sensor.

[0020] S5: After the release film has been used multiple times, the first electric push rod operates to move the fixed plate upward, the cutter cuts the release film, the first electric push rod is reset, and one end of the release film is fixed to the moving frame through the clamping plate to replace the release film.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] This solution mixes raw materials, sintering aid powder and antioxidant by arranging a feed box, a fifth motor, a rotating shaft, a top frame, a main gear, a slave gear, a vertical shaft and a spiral conveyor rod; by arranging a second motor, a spur gear, an assembly disk, an annular block and an annular rack, the positions of the remaining molds on the assembly disk are adjusted so that they are located on one side of the shell, which is convenient for replacing molds and producing silicon carbide materials of different shapes; by arranging a frame, a side plate, a support plate, a unwinding roller, a third motor, a release film, a return frame, a first electric push rod, a fixed plate, a T-shaped rubber extrusion plate, a cutter, a fourth motor, a first pulley, a belt, a second pulley, a moving frame, a second electric push rod, a clamping plate, a baffle and a laser ranging sensor, the release film is used for support to assist the molding of the silicon carbide material, avoid large friction that causes deformation of the silicon carbide material after molding, and the release film can be quickly replaced after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a silicon carbide extrusion molding device proposed by the present invention;

[0024] Figure 2 A schematic cross-sectional structure diagram of a silicon carbide extrusion molding device proposed by the present invention;

[0025] Figure 3 A silicon carbide extrusion molding device proposed by the present invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0026] Figure 4 A silicon carbide extrusion molding device proposed by the present invention Figure 2 A schematic diagram of the enlarged structure of part B in FIG.

[0027] Figure 5 A silicon carbide extrusion molding device proposed by the present invention Figure 2 A schematic diagram of the enlarged structure of part C in FIG.

[0028] Figure 6 A schematic diagram of the structure of a fourth motor, a first pulley, a belt and a second pulley of a silicon carbide extrusion molding device proposed by the present invention;

[0029] Figure 7 This is a partial three-dimensional structural schematic diagram of a silicon carbide extrusion molding device proposed in the present invention.

[0030] In the figure: 1, base; 2, equipment box; 3, round seat; 4, housing; 5, extrusion screw; 6, first motor; 7, second motor; 8, spur gear; 9, assembly plate; 10, ring block; 11, ring rack; 12, frame; 13, side plate; 14, support plate; 15, unwinding roller; 16, third motor; 17, release film; 18, return frame; 19, first electric push rod; 20, fixed plate; 21, T-shaped rubber Extrusion plate; 22. Cutter; 23. Fourth motor; 24. First pulley; 25. Belt; 26. Second pulley; 27. Moving frame; 28. Second electric push rod; 29. ​​Clamp; 30. Feed box; 31. Baffle; 32. Laser ranging sensor; 33. Fifth motor; 34. Rotating shaft; 35. Top frame; 36. Main gear; 37. Slave gear; 38. Vertical shaft; 39. Screw conveyor rod; 40. Flip leaf. DETAILED DESCRIPTION

[0031] Depend on Figure 1-Figure 7As shown, a silicon carbide extrusion molding device and extrusion molding process, including a base 1, a device box 2 and a round seat 3 are fixedly connected on the top of the base 1, a shell 4 is fixedly connected between the device box 2 and the round seat 3, an extrusion screw 5 is rotatably connected inside the shell 4, a first motor 6 is fixedly connected inside the device box 2, a circular hole is opened on the outer wall of the device box 2, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the first motor 6

[0032] The operation of the first motor 6 causes the extrusion screw 5 to rotate, and the rotation of the extrusion screw 5 continuously extrudes the raw material, and the raw material is extruded through one of the molds on the assembly disk 9. The outer wall of the output shaft of the first motor 6 is fixedly connected to the outer wall of the extrusion screw 5, and the top of the base 1 is fixedly connected to the second motor 7. The outer wall of the round seat 3 is provided with a through hole, and the inner wall of the through hole is rotatably connected to the outer wall of the output shaft of the second motor 7, and the outer wall of the output shaft of the second motor 7 is fixedly connected to a spur gear 8.

[0033] A circular groove is provided on the outer wall of the round seat 3, and an assembly disk 9 is rotatably connected to the inner wall of the circular groove. Multiple molds are evenly installed on the outer wall of the assembly disk 9. By rotating the assembly disk 9, the positions of the remaining molds on the assembly disk 9 are adjusted so that they are located on one side of the outer shell 4, which is convenient for replacing the mold and producing silicon carbide materials of different shapes. An annular groove is provided on the outer wall of the round seat 3, and an annular block 10 is rotatably connected to the inner wall of the annular groove. The outer wall of the annular block 10 is fixedly connected to the outer wall of the assembly disk 9.

[0034] The outer wall of the assembly disk 9 is fixedly sleeved with an annular rack 11, and the spur gear 8 is meshingly connected with the annular rack 11. The second motor 7 is operated to rotate the spur gear 8, and the rotation of the spur gear 8 causes the annular rack 11 to rotate, so as to adjust the positions of the remaining molds on the assembly disk 9. The top of the base 1 is fixedly connected with a frame 12, and the outer wall of the frame 12 is fixedly connected with a side plate 13, and the bottom of the side plate 13 is rotatably connected with a rotating shaft, and the outer wall of the rotating shaft is fixedly connected with a support plate 14, and the outer wall of the frame 12 is fixedly connected with a servo motor, and the outer wall of the servo motor output shaft is fixedly connected with the outer wall of the rotating shaft. The operation of the servo motor causes the support plate 14 to rotate through the rotating shaft, thereby unloading the formed silicon carbide.

[0035] The outer wall of the base 1 is fixedly connected with a unwinding roller 15 and a third motor 16. The outer wall of the unwinding roller 15 is wrapped with a release film 17, and is supported by the release film 17. Since the release film 17 itself has a non-stick property and a sufficiently smooth surface, it assists in the molding of the silicon carbide material and avoids greater friction.

[0036] A return frame 18 is fixedly connected to the bottom of the support plate 14, a first electric push rod 19 is fixedly connected to the inner wall of the return frame 18, a fixed plate 20 is fixedly connected to the top of the output end of the first electric push rod 19, a T-shaped rubber extrusion plate 21 and a cutter 22 are fixedly connected to the outer wall of the fixed plate 20, the cutter 22 cuts the release film 17, and the subsequent replacement of the release film 17 is convenient, a moving mechanism is provided on the outer wall of the side plate 13, and a mixing mechanism is provided inside the feed box 30.

[0037] Depend on Figure 1-Figure 7 As shown, the moving mechanism includes a first pulley 24, a fourth motor 23 is fixedly connected to the outer wall of the side plate 13, the top of the output shaft of the fourth motor 23 is fixedly connected to the outer wall of the first pulley 24, the outer wall of the first pulley 24 is transmission-connected with a belt 25, the outer wall of the side plate 13 is provided with a long groove, the inner wall of the long groove is slidingly connected to the outer wall of the belt 25, one end of the belt 25 is transmission-connected with a second pulley 26, the outer wall of the second pulley 26 is rotationally connected with a T-plate, the outer wall of the T-plate is fixedly connected to the outer wall of the side plate 13, the outer wall of the belt 25 is fixedly connected with a moving frame 27 of a hollow structure, the fourth motor 23 rotates to rotate the first pulley 24, the rotation of the first pulley 24 rotates the belt 25, the rotation of the belt 25 rotates the second pulley 26, and the belt 25 drives the moving frame 27 to move.

[0038] Rectangular grooves are provided on the outer walls of the movable frame 27 and the support plate 14, and the inner walls of the rectangular grooves are slidably connected to the outer walls of the release film 17. The inner wall of the movable frame 27 is fixedly connected to the second electric push rod 28, and the bottom of the output end of the second electric push rod 28 is fixedly connected to a clamping plate 29, and the clamping plate 29 fixes one end of the release film 17 through the second electric push rod 28. The outer wall of the outer shell 4 is fixedly connected to a feed box 30, the outer wall of the side plate 13 is fixedly connected to a baffle 31, and the outer wall of the baffle 31 is fixedly connected to a laser ranging sensor 32 (FD-L150).

[0039] Depend on Figure 1-Figure 5 As shown, the mixing mechanism includes a fifth motor 33, the outer wall of the feed box 30 is fixedly connected to the equipment frame, the inner wall of the equipment frame is fixedly connected to the outer wall of the fifth motor 33, the outer wall of the feed box 30 is provided with a sliding hole, the inner wall of the sliding hole is rotatably connected to the outer wall of the output shaft of the fifth motor 33, one end of the output shaft of the fifth motor 33 is fixedly connected to the rotating shaft 34, the fifth motor 33 is operated to rotate the rotating shaft 34, the outer wall of the rotating shaft 34 is evenly fixedly connected with a plurality of flip leaves 40, the rotating shaft 34 rotates to rotate the flip leaves 40, and the raw materials, sintering aid powder and antioxidant are mixed.

[0040] The outer wall of the rotating shaft 34 is rotatably sleeved with a top frame 35, the outer wall of the top frame 35 is fixedly connected to the inner wall of the feed box 30, the outer wall of the rotating shaft 34 is fixedly sleeved with a main gear 36, the outer wall of the main gear 36 is meshingly connected with a slave gear 37, the outer wall of the slave gear 37 is fixedly connected to a vertical shaft 38, the outer wall of the vertical shaft 38 is fixedly sleeved with a bearing, the outer ring of the bearing is fixedly connected to the inner wall of the top frame 35.

[0041] An annular guide plate is fixedly connected to the inside of the feed box 30, one end of the vertical shaft 38 passes through the outer wall of the top frame 35 and is fixedly connected to a screw conveying rod 39, the outer wall of the outer shell 4 is provided with a feed hole, the inner wall of the annular guide plate and the feed hole are both slidably connected to the outer wall of the screw conveying rod 39, the rotation of the rotating shaft 34 causes the main gear 36 and the slave gear 37 to rotate, the rotation of the slave gear 37 causes the vertical shaft 38 to rotate, the rotation of the vertical shaft 38 causes the screw conveying rod 39 to rotate, the rotation of the screw conveying rod 39 further mixes the raw materials, sintering aid powder and antioxidant, and a feed hole is provided on the top of the feed box 30.

[0042] S1: Raw materials, sintering aid powder and antioxidant are introduced into the feed box 30 through the feed hole, wherein the sintering aid powder is mainly used for drying and shaping the silicon carbide material to be subsequently formed; the antioxidant improves the anti-oxidation effect of the silicon carbide material.

[0043] S2: The fifth motor 33 is running, the rotating shaft 34 and the flip blade 40 are rotating, the raw material, the sintering aid powder and the antioxidant are mixed, and the spiral conveying rod 39 is driven to rotate to further mix the raw material, the sintering aid powder and the antioxidant, and at the same time, they are conveyed into the housing 4 through the discharge hole.

[0044] S3: The first motor 6 operates to rotate the extrusion screw 5 to extrude the raw material from one of the molds on the assembly disk 9. The second motor 7 operates to adjust the positions of the remaining molds on the assembly disk 9 to be located on one side of the housing 4, so as to facilitate mold replacement and produce silicon carbide materials of different shapes.

[0045] S4: After the silicon carbide material is extruded from the mold after molding, it is supported by the support plate 14, and the fourth motor 23 and the third motor 16 are operated first to move the release film 17 through the moving frame 27. The release film 17 is located on the support plate 14, so that the release film 17 matches the length of the silicon carbide material extrusion, and contacts the silicon carbide material through the release film 17. The moving distance of the moving frame 27 is detected by the laser ranging sensor 32 (FD-L150).

[0046] S5: After the release film 17 has been used multiple times, the first electric push rod 19 operates to move the fixed plate 20 upward, the cutter 22 cuts the release film 17, the first electric push rod 19 is reset, and one end of the release film 17 is fixed to the movable frame 27 through the clamping plate 29, and the release film 17 is replaced.

[0047] Working principle: When in use, the raw material, sintering aid powder and antioxidant are fed into the feed box 30 through the feed hole, wherein the sintering aid powder is mainly used for drying and shaping the silicon carbide material to be subsequently formed; the antioxidant improves the anti-oxidation effect of the silicon carbide material, the fifth motor 33 is operated to rotate the rotating shaft 34, the rotation of the rotating shaft 34 rotates the flip leaf 40, and the raw material, sintering aid powder and antioxidant are mixed, the rotation of the rotating shaft 34 rotates the main gear 36 and the slave gear 37, the rotation of the slave gear 37 rotates the vertical shaft 38, the rotation of the vertical shaft 38 rotates the screw conveying rod 39, the rotation of the screw conveying rod 39 further mixes the raw material and sintering aid powder. The powder is mixed with the antioxidant and conveyed to the shell 4 through the discharge hole. The first motor 6 is operated to rotate the extrusion screw 5. The extrusion screw 5 rotates to continuously extrude the raw material. The raw material is extruded through one of the molds on the assembly disk 9. When the mold needs to be replaced, the second motor 7 is operated to rotate the spur gear 8. The spur gear 8 rotates to rotate the annular rack 11. The positions of the remaining molds on the assembly disk 9 are adjusted to be located on one side of the shell 4, which is convenient for replacing the mold and producing silicon carbide materials of different shapes. After the silicon carbide material is extruded from the mold after molding, it is supported by the support plate 14, and the fourth motor 23 and the third motor 16 are operated first to release the mold. One end of the film 17 passes through the moving frame 27 and the rectangular groove on the support plate 14, and is located below the clamping plate 29. The second electric push rod 28 operates to clamp the clamping plate 29 to one end of the release film 17. The third motor 16 operates to unwind the release film 17. The fourth motor 23 operates to rotate the first pulley 24. The rotation of the first pulley 24 rotates the belt 25. The rotation of the belt 25 rotates the second pulley 26, so that the belt 25 drives the moving frame 27 to move. The movement of the moving frame 27 drives the release film 17 to move. The moving distance of the moving frame 27 is detected by the laser distance sensor 32 (FD-L150). When the moving frame 27 moves to a certain distance, Stop moving, at this time the silicon carbide material is extruded onto the release film 17, and with continuous extrusion, it is supported by the release film 17. Since the release film 17 itself has a non-stick property and has a sufficiently smooth surface, it assists in the molding of the silicon carbide material and avoids large friction that causes deformation of the silicon carbide material after molding. When the release film 17 has been used many times, the first electric push rod 19 operates to move the fixed plate 20 upward, and the fixed plate 20 moves upward to cause the T-shaped rubber extrusion plate 21 to extrude the surface of the release film 17, and the cutter 22 cuts the release film 17. The first electric push rod 19 is reset, and then one end of the release film 17 is fixed to the moving frame 27 through the clamping plate 29.

[0048] The above description is only a preferred specific implementation manner of this embodiment, but the protection scope of this embodiment is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A silicon carbide extrusion molding device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to an equipment box (2) and a round seat (3); a housing (4) is fixedly connected between the equipment box (2) and the round seat (3); an extrusion screw (5) is rotatably connected inside the housing (4); a first motor (6) is fixedly connected inside the equipment box (2); an outer wall of an output shaft of the first motor (6) is fixedly connected to an outer wall of the extrusion screw (5); a second motor (7) is fixedly connected to the top of the base (1); a spur gear (8) is fixedly connected to the outer wall of the output shaft of the second motor (7); a circular groove is provided on the outer wall of the round seat (3); an assembly disk (9) is rotatably connected to the inner wall of the circular groove; an annular rack (11) is fixedly sleeved on the outer wall of the assembly disk (9); the spur gear (8) and the annular rack (11) are meshingly connected; a frame (12) is fixedly connected to the top of the base (1); the frame ( The outer wall of the base (12) is fixedly connected to a side plate (13), the bottom of the side plate (13) is rotatably connected to a rotating shaft, the outer wall of the rotating shaft is fixedly connected to a support plate (14), the outer wall of the base (1) is fixedly connected to a unwinding roller (15) and a third motor (16), the outer wall of the unwinding roller (15) is wound with a release film (17), the bottom of the support plate (14) is fixedly connected to a return frame (18), the inner wall of the return frame (18) is fixedly connected to a first electric push rod (19), the top of the output end of the first electric push rod (19) is fixedly connected to a fixed plate (20), the outer wall of the fixed plate (20) is fixedly connected to a T-shaped rubber extrusion plate (21) and a cutter (22), the outer wall of the side plate (13) is provided with a moving mechanism, the outer wall of the shell (4) is fixedly connected to a feed box (30), and a mixing mechanism is provided inside the feed box (30).

2. A silicon carbide extrusion molding device according to claim 1, characterized in that: The moving mechanism comprises a first pulley (24), a fourth motor (23) is fixedly connected to the outer wall of the side plate (13), the top of the output shaft of the fourth motor (23) is fixedly connected to the outer wall of the first pulley (24), the outer wall of the first pulley (24) is transmission-connected to a belt (25), one end of the belt (25) is transmission-connected to a second pulley (26), the outer wall of the second pulley (26) is rotationally connected to a T-shaped plate, the outer wall of the T-shaped plate is fixedly connected to the outer wall of the side plate (13), the outer wall of the belt (25) is fixedly connected to a moving frame (27) with a hollow structure, the inner wall of the moving frame (27) is fixedly connected to a second electric push rod (28), the bottom of the output end of the second electric push rod (28) is fixedly connected to a clamping plate (29), the outer wall of the side plate (13) is fixedly connected to a baffle (31), and the outer wall of the baffle (31) is fixedly connected to a laser distance sensor (32).

3. A silicon carbide extrusion molding device according to claim 1, characterized in that: The mixing mechanism comprises a fifth motor (33); an outer wall of the feed box (30) is fixedly connected to an equipment frame, an inner wall of the equipment frame is fixedly connected to the outer wall of the fifth motor (33); one end of the output shaft of the fifth motor (33) is fixedly connected to a rotating shaft (34); a plurality of flip leaves (40) are evenly fixedly connected to the outer wall of the rotating shaft (34); a top frame (35) is rotatably sleeved on the outer wall of the rotating shaft (34); the outer wall of the top frame (35) is fixedly connected to the inner wall of the feed box (30); a main gear (36) is fixedly sleeved on the outer wall of the rotating shaft (34); a slave gear (37) is meshedly connected to the outer wall of the main gear (36); a vertical shaft (38) is fixedly connected to the outer wall of the slave gear (37); one end of the vertical shaft (38) passes through the outer wall of the top frame (35) and is fixedly connected to a spiral conveying rod (39); a feeding hole is opened at the top of the feed box (30).

4. A silicon carbide extrusion molding device according to claim 1, characterized in that: The outer wall of the equipment box (2) is provided with a circular hole, the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the first motor (6), and the outer wall of the assembly plate (9) is evenly mounted with a plurality of molds.

5. A silicon carbide extrusion molding device according to claim 1, characterized in that: The outer wall of the round seat (3) is provided with a through hole, and the inner wall of the through hole is rotatably connected to the outer wall of the output shaft of the second motor (7).

6. A silicon carbide extrusion molding device according to claim 2, characterized in that: The outer wall of the round seat (3) is provided with an annular groove, the inner wall of the annular groove is rotatably connected with an annular block (10), the outer wall of the annular block (10) is fixedly connected to the outer wall of the assembly disk (9), and the outer wall of the side plate (13) is provided with a long groove, the inner wall of the long groove is slidably connected to the outer wall of the belt (25).

7. A silicon carbide extrusion molding device according to claim 2, characterized in that: The outer walls of the movable frame (27) and the support plate (14) are both provided with rectangular grooves, the inner walls of the rectangular grooves are slidably connected to the outer wall of the release film (17), the outer wall of the frame (12) is fixedly connected to a servo motor, and the outer wall of the servo motor output shaft is fixedly connected to the outer wall of the rotating shaft.

8. A silicon carbide extrusion molding device according to claim 3, characterized in that: The outer wall of the feed box (30) is provided with a sliding hole, and the inner wall of the sliding hole is rotatably connected to the outer wall of the output shaft of the fifth motor (33).

9. A silicon carbide extrusion molding device according to claim 3, characterized in that: A bearing is fixedly sleeved on the outer wall of the vertical shaft (38), and the outer ring of the bearing is fixedly connected to the inner wall of the top frame (35). An annular material guide plate is fixedly connected to the inside of the feed box (30). A material discharge hole is opened on the outer wall of the outer shell (4), and the annular material guide plate and the inner wall of the material discharge hole are both slidably connected to the outer wall of the spiral conveying rod (39).

10. A silicon carbide extrusion molding process, using a silicon carbide extrusion molding device according to any one of claims 1 to 9, characterized in that: The steps include: S1: raw materials, sintering aid powder and antioxidant are introduced into a feed box (30) through a feed hole, wherein the sintering aid powder is mainly used for drying and shaping the silicon carbide material to be subsequently formed; the antioxidant improves the anti-oxidation effect of the silicon carbide material; S2: The fifth motor (33) is running, the rotating shaft (34) and the turning blade (40) are rotating, the raw material, the sintering aid powder and the antioxidant are mixed, and the spiral conveying rod (39) is driven to rotate to further mix the raw material, the sintering aid powder and the antioxidant, and at the same time, the raw material, the sintering aid powder and the antioxidant are conveyed into the housing (4) through the discharge hole; S3: The first motor (6) is operated to rotate the extrusion screw (5) to extrude the raw material from one of the molds on the assembly disk (9). When the second motor (7) is operated, the positions of the remaining molds on the assembly disk (9) are adjusted so that they are located on one side of the housing (4), so as to facilitate the replacement of the molds and produce silicon carbide materials of different shapes. S4: After the silicon carbide material is extruded from the mold after molding, it is supported by the support plate (14), and the fourth motor (23) and the third motor (16) are operated first to move the release film (17) through the moving frame (27). The release film (17) is located on the support plate (14), so that the release film (17) matches the length of the silicon carbide material extruded, and the silicon carbide material is contacted through the release film (17), and the moving distance of the moving frame (27) is detected by the laser distance sensor (32); S5: After the release film (17) has been used multiple times, the first electric push rod (19) operates to move the fixed plate (20) upward, and the cutter (22) cuts the release film (17). The first electric push rod (19) is reset, and one end of the release film (17) is fixed to the movable frame (27) through the clamping plate (29), and the release film (17) is replaced.

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