Vacuum sintering furnace for welding silicon carbide rods

Abstract

The utility model discloses a vacuum sintering furnace for silicon carbide rod welding, which relates to the technical field of silicon carbide rod production and comprises a sintering furnace body, a connecting block is arranged at the top end of the sintering furnace body through a transmission component, a connecting column is arranged at the bottom end of the connecting block, a positioning block is arranged at the bottom end of the connecting column, and a fixing block is arranged at one end of the connecting column. A protective door is arranged at the bottom end of the fixing block, a containing table is arranged on one side of the bottom of the protective door, pulleys are arranged at the bottom end of the containing table, sealing blocks are arranged on the two sides of the bottom end of the protective door, and a guide assembly is arranged at the bottom of the sintering furnace body. The sintering furnace has the advantages that due to the fact that the servo motor and the lead screw are arranged outside the sintering furnace body, heat in the sintering furnace body cannot affect the lead screw and the servo motor, the service life of the servo motor is guaranteed, synchronous movement of the protective door and the placing table can be achieved by controlling the servo motor, and the service life of the protective door is prolonged. The operation procedures of feeding and discharging are reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a vacuum sintering furnace, in particular to a vacuum sintering furnace for silicon carbon rod welding, belonging to the technical field of silicon carbon rod production. Background Art

[0002] With the rapid development of modern industrial technology, the application fields of high-temperature materials are becoming increasingly extensive, especially in the fields of new energy, new materials, aerospace, etc., and the performance requirements of high-temperature materials are becoming higher and higher. As an important high-temperature electric heating element, silicon carbon rods are widely used in various high-temperature heating equipment due to their excellent properties such as high temperature resistance, oxidation resistance, and corrosion resistance. However, traditional silicon carbon rod sintering technology has problems such as long sintering time, high energy consumption, and serious environmental pollution. It is difficult to meet the modern industry's demand for high efficiency, environmental protection, and energy saving. Therefore, a vacuum sintering furnace for silicon carbon rod welding is needed;

[0003] Among them, the "Vacuum Sintering Furnace for Silicon Carbon Rod Welding" disclosed in the application number "CN202321649585.0" is also an increasingly mature technology, comprising a sintering furnace body, a placement plate provided on one side surface of the sintering furnace body, and a vacuum pump installed on the top surface of the placement plate, and the vacuum pump is connected to the sintering furnace body through a vacuum tube. In the utility model, the sealed door is opened, the material is placed on the placement plate, the screw is driven to rotate by a motor, the moving block is limited by a limit block and a limit groove, so that the moving block can move on the screw, and the moving block drives the placement plate to move through the connecting block while moving. When the placement plate moves into the sintering furnace body, the sealed door is closed, and the silicon carbon rod can be processed. After processing, the sealed door is opened, and the screw is driven to rotate by a motor. When the placement plate is moved out of the sintering furnace body, the processed silicon carbon rod can be removed, which is convenient for automatic loading and unloading, relieves the labor intensity of the staff, and is conducive to improving their work efficiency.

[0004] However, the above method still has the following defects in actual use: the sealing door and the motor must be manually opened, and the screw must be rotated to move the placement plate out. The loading and unloading operations are relatively cumbersome, and the work efficiency needs to be improved. At the same time, the screw is arranged inside the sintering furnace, and the heat of the sintering furnace is transferred to the drive shaft of the motor through the screw, which can easily affect the service life of the motor. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum sintering furnace for silicon carbon rod welding, so as to solve the problem proposed in the above background technology that the placing plate can only be moved out by manually opening the sealing door and the motor and rotating the screw, and the loading and unloading operations are relatively cumbersome, and the work efficiency needs to be improved.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum sintering furnace for silicon carbon rod welding, comprising a sintering furnace body, the top of the sintering furnace body is provided with a connecting block through a transmission assembly, the bottom end of the connecting block is provided with a connecting column, the bottom end of the connecting column is provided with a positioning block, one end of the connecting column is provided with a fixed block, the bottom end of the fixed block is provided with a protective door, one side of the bottom of the protective door is provided with a placing table, the bottom end of the placing table is provided with a pulley, sealing blocks are provided on both sides of the bottom end of the protective door, and the bottom of the sintering furnace body is provided with a guide assembly.

[0007] As a preferred technical solution of the present invention, a placement box is provided in the middle of the placement table surface, and a slide rail is provided in the middle of the top of the sintering furnace body, and the inner wall of the slide rail slides with the surface of the positioning block.

[0008] As an optimal technical solution of the present invention, the transmission assembly includes a fixed platform, a mounting plate, a servo motor, a first connecting tube and a first round block. The fixed platform is arranged at the top of one side of the sintering furnace body. The top of the fixed platform is provided with a mounting plate. A servo motor is provided in the middle of the surface of the mounting plate through a motor seat. A first connecting tube is provided on one side of the surface of the mounting plate through a mounting column. The first round block is rotatably connected to the inside of the first connecting tube.

[0009] As an optimal technical solution of the present invention, there are two corresponding fixed columns on one side of the top of the sintering furnace body, and a fixed rod is provided on the corresponding side of the two fixed columns. A second connecting tube is provided between the two fixed rods, and a second round block is rotatably connected to the inside of the second connecting tube. A screw rod is provided between the second round block and the first round block, and the surface of the screw rod is connected to the internal thread of the connecting block.

[0010] As a preferred technical solution of the present invention, the transmission shaft of the servo motor is fixedly connected to one end of the first round block.

[0011] As an optimal technical solution of the present invention, the guide assembly includes two support rails, two guide grooves and two support blocks. The two support rails are equidistantly arranged at the bottom of the other side of the sintering furnace body, the two guide grooves are opened at the bottom end of the inner wall of the sintering furnace body, and the bottom end of the support rail is provided with a support block.

[0012] As a preferred technical solution of the present invention, the four corners of the bottom end of the sintering furnace body are provided with supporting feet.

[0013] As an optimal technical solution of the present invention, a vacuum pump is provided on the top of the surface of the sintering furnace body through a support seat, the air inlet end of the vacuum pump is fixedly connected to the interior of the sintering furnace body through a sealing tube, and an exhaust pipe is provided at a corner of the top of the sintering furnace body.

[0014] Compared with the related art, the vacuum sintering furnace for silicon carbon rod welding provided by the present invention has the following beneficial effects:

[0015] Since the servo motor and lead screw are arranged outside the sintering furnace body, the heat inside the sintering furnace body will not affect the lead screw and servo motor, thereby ensuring the service life of the servo motor. By controlling the servo motor, the protective door and the placement table can be moved synchronously, which reduces the operation process of loading and unloading, improves work efficiency, and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a side structural diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the transmission assembly of the utility model;

[0019] Figure 4 This is a structural diagram of the placement table of the utility model;

[0020] Figure 5 It is an enlarged structural diagram of the guide assembly of the utility model.

[0021] In the figure: 1. Sintering furnace body; 111. Slide rail; 112. Support foot; 113. Vacuum pump; 114. Exhaust pipe; 2. Transmission assembly; 21. Fixed table; 22. Mounting plate; 23. Servo motor; 24. First connecting pipe; 241. First round block; 25. Fixed column; 26. Fixed rod; 27. Second connecting pipe; 271. Second round block; 28. Screw; 3. Connecting block; 4. Connecting column; 400. Positioning block; 41. Fixed block; 42. Protective door; 421. Sealing block; 43. Placement table; 44. Pulley; 45. Placement box; 5. Guide assembly; 51. Support rail; 52. Guide groove; 53. Support block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-5The utility model provides a vacuum sintering furnace for silicon carbon rod welding, including a sintering furnace body 1, a connecting block 3 is provided at the top of the sintering furnace body 1 through a transmission assembly 2, a connecting column 4 is fixed at the bottom end of the connecting block 3, and a positioning block 400 is fixed at the bottom end of the connecting column 4 to provide guidance for the movement of the connecting column 4, one end of the connecting column 4 is fixed with a fixing block 41, and a protective door 42 is fixed at the bottom end of the fixing block 41, and a placing table 43 is fixed on one side of the bottom of the protective door 42. When the protective door 42 moves, it will drive the placing table 43 to move synchronously, and the bottom end of the placing table 43 is fixed with a pulley 44, which provides support for the movement of the placing table 43, and sealing blocks 421 are fixed on both sides of the bottom end of the protective door 42 to increase the sealing performance of the bottom end of the protective door 42, ensuring that the vacuum environment in the furnace body is not affected by the outside world during the sintering process, and a guide assembly 5 is provided at the bottom of the sintering furnace body 1.

[0024] A placement box 45 is fixedly provided in the middle of the surface of the placement table 43 for placing the silicon carbon rods to be processed. A slide rail 111 is fixedly provided in the middle of the top of the sintering furnace body 1 , and the inner wall of the slide rail 111 slides in cooperation with the surface of the positioning block 400 .

[0025] The transmission assembly 2 includes a fixed platform 21, a mounting plate 22, a servo motor 23, a first connecting tube 24 and a first round block 241. The fixed platform 21 is arranged at the top of one side of the sintering furnace body 1. The top of the fixed platform 21 is fixed with a mounting plate 22. The servo motor 23 is fixed to the middle part of the surface of the mounting plate 22 through a motor seat. The first connecting tube 24 is fixed to one side of the surface of the mounting plate 22 through a mounting column. The first round block 241 is rotatably connected to the inside of the first connecting tube 24.

[0026] There are two corresponding fixed columns 25 on one side of the top of the sintering furnace body 1, and a fixed rod 26 is fixed on the corresponding side of the two fixed columns 25. A second connecting pipe 27 is fixed between the two fixed rods 26. The inside of the second connecting pipe 27 is rotatably connected to the second round block 271. A screw rod 28 is fixed between the second round block 271 and the first round block 241, and the surface of the screw rod 28 is connected to the internal thread of the connecting block 3.

[0027] The transmission shaft of the servo motor 23 is fixedly connected to one end of the first round block 241 . The transmission shaft of the servo motor 23 drives the screw rod 28 to rotate synchronously via the first round block 241 .

[0028] The guide assembly 5 includes two support rails 51, two guide grooves 52 and two support blocks 53. The two support rails 51 are equidistantly arranged at the bottom of the other side of the sintering furnace body 1. The two guide grooves 52 are opened at the bottom end of the inner wall of the sintering furnace body 1. The inner wall of the support rail 51 and the surface of the guide groove 52 are in the same horizontal plane. The support rail 51 and the guide groove 52 are used to cooperate with the pulley 44 for sliding. The inner wall of the support rail 51 is slidably matched with the bottom end of the sealing block 421. A support block 53 is fixed to the bottom end of the support rail 51, and support is provided to the support rail 51 by the support block 53.

[0029] Support legs 112 are fixedly provided at the four corners of the bottom end of the sintering furnace body 1 for supporting and facilitating transportation.

[0030] A vacuum pump 113 is fixedly provided on the top of the surface of the sintering furnace body 1 through a support seat. The air inlet end of the vacuum pump 113 is fixedly connected to the interior of the sintering furnace body 1 through a sealing tube. The vacuum pump 113 is used to extract the air in the sintering furnace body 1 to form a vacuum environment. An exhaust pipe 114 is fixedly provided at a corner of the top of the sintering furnace body 1.

[0031] During use, first, the vacuum sintering furnace for silicon carbon rod welding is moved to a suitable position through the support legs 112 at the bottom end of the sintering furnace body 1. Since the servo motor 23 and the screw rod 28 are arranged outside the sintering furnace body 1, the heat inside the sintering furnace body 1 will not affect the screw rod 28 and the servo motor 23, thereby ensuring the service life of the servo motor 23. Then, by turning on the servo motor 23, the transmission shaft of the servo motor 23 drives the first round block 241 connected thereto to rotate synchronously, and the first round block 241 can drive the screw rod 28 connected thereto to rotate synchronously, and the cooperation of the fixing column 25 and the fixing rod 26 provides stable support for the other end of the screw rod 28, so that the screw rod 28 is not easy to tilt, and the surface of the screw rod 28 is connected to the internal thread of the connecting block 3, which can drive the connecting block 3 to move. By controlling the servo motor 23, the drive shaft of the servo motor 23 drives the first round block 241 connected thereto to rotate synchronously. The first round block 241 can drive the screw rod 28 connected thereto to rotate synchronously. The fixing column 25 and the fixing rod 26 cooperate to provide stable support for the other end of the screw rod 28, so that the screw rod 28 is not easy to tilt. Under the action of the threaded connection between the surface of the screw rod 28 and the internal thread of the connecting block 3, the connecting block 3 can be driven to move. The forward and reverse rotation of the servo motor 23 can control the moving direction of the connecting block 3. When the connecting block 3 moves, it drives the connecting column 4 and the fixed block 41 to move. The fixed block 41 can push the bottom protective door 42 and the placement table 43 to move. By controlling the servo motor 23, the synchronous movement of the protective door 42 and the placement table 43 can be achieved, which reduces the loading and unloading operation process. The inner wall of the support rail 51 and the surface of the guide groove 52 are at the same horizontal plane, providing guidance for the pulley 44 at the bottom end of the placement table 43. The support block 53 provides support for the support rail 51. After the placement table 43 is moved out, the silicon carbide rod to be processed is placed in the placement box 45 and is retracted into the sintering furnace body 1 with the cooperation of the servo motor 23. The vacuum pump 113 extracts the air in the sintering furnace body 1 to form a vacuum environment. With the cooperation of the sintering furnace body 1, the silicon carbide rod is evenly heated.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum sintering furnace for silicon carbon rod welding, comprising a sintering furnace body (1), characterized in that: The top end of the sintering furnace body (1) is provided with a connecting block (3) through a transmission assembly (2); the bottom end of the connecting block (3) is provided with a connecting column (4); the bottom end of the connecting column (4) is provided with a positioning block (400); one end of the connecting column (4) is provided with a fixing block (41); the bottom end of the fixing block (41) is provided with a protective door (42); one side of the bottom of the protective door (42) is provided with a placing table (43); the bottom end of the placing table (43) is provided with a pulley (44); sealing blocks (421) are provided on both sides of the bottom end of the protective door (42); and the bottom of the sintering furnace body (1) is provided with a guide assembly (5).

2. A vacuum sintering furnace for silicon carbon rod welding according to claim 1, characterized in that: A placement box (45) is provided in the middle of the surface of the placement table (43), and a slide rail (111) is provided in the middle of the top of the sintering furnace body (1), and the inner wall of the slide rail (111) is slidably matched with the surface of the positioning block (400).

3. A vacuum sintering furnace for silicon carbon rod welding according to claim 1, characterized in that: The transmission assembly (2) comprises a fixed platform (21), a mounting plate (22), a servo motor (23), a first connecting tube (24) and a first round block (241); the fixed platform (21) is arranged at the top end of one side of the sintering furnace body (1); a mounting plate (22) is arranged at the top end of the fixed platform (21); a servo motor (23) is arranged in the middle of the surface of the mounting plate (22) via a motor seat; a first connecting tube (24) is arranged on one side of the surface of the mounting plate (22) via a mounting column; and the first round block (241) is rotatably connected inside the first connecting tube (24).

4. A vacuum sintering furnace for silicon carbon rod welding according to claim 1, characterized in that: Two corresponding fixing columns (25) are provided on one side of the top of the sintering furnace body (1), and a fixing rod (26) is provided on one side corresponding to the two fixing columns (25). A second connecting tube (27) is provided between the two fixing rods (26), and a second round block (271) is rotatably connected inside the second connecting tube (27). A screw rod (28) is provided between the second round block (271) and the first round block (241), and the surface of the screw rod (28) is connected to the internal thread of the connecting block (3).

5. The vacuum sintering furnace for silicon carbon rod welding according to claim 3, characterized in that: The transmission shaft of the servo motor (23) is fixedly connected to one end of the first round block (241).

6. A vacuum sintering furnace for silicon carbon rod welding according to claim 1, characterized in that: The guide assembly (5) comprises two support rails (51), two guide grooves (52) and two support blocks (53); the two support rails (51) are equidistantly arranged at the bottom of the other side of the sintering furnace body (1); the two guide grooves (52) are opened at the bottom end of the inner wall of the sintering furnace body (1); and the support block (53) is provided at the bottom end of the support rail (51).

7. The vacuum sintering furnace for silicon carbon rod welding according to claim 1, characterized in that: Support legs (112) are provided at the four corners of the bottom end of the sintering furnace body (1).

8. The vacuum sintering furnace for silicon carbon rod welding according to claim 1, characterized in that: A vacuum pump (113) is provided at the top of the surface of the sintering furnace body (1) via a support seat, an air inlet end of the vacuum pump (113) is fixedly connected to the inside of the sintering furnace body (1) via a sealing tube, and an exhaust pipe (114) is provided at a corner of the top of the sintering furnace body (1).

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