Tundish inlet and outlet transmission device

Abstract

The invention relates to the technical field of mechanical transmission, in particular to a tundish in-out transmission device which comprises a smelting chamber, a tundish, a transmission mechanism and a tundish replacement chamber, the tundish is arranged in the tundish replacement chamber, the smelting chamber communicates with the tundish replacement chamber, and a sealing door is arranged at the joint of the smelting chamber and the tundish replacement chamber; the transmission mechanism comprises a sliding plate and a first guide rail, the tundish is arranged on the sliding plate, the bottom of the sliding plate is slidably connected with the first guide rail, one end of the first guide rail is arranged in the tundish replacement chamber, the other end extends into the smelting chamber, and the sliding plate is used for driving the tundish to move between the tundish replacement chamber and the smelting chamber; the length of the sliding plate is larger than the gap of the disconnected part. The method has the advantages that when the tundish is replaced, argon consumption can be reduced, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical transmission, in particular to an intermediate ladle in-out transmission device. BACKGROUND

[0002] The neodymium iron boron vacuum induction melting furnace is a core equipment for preparing high-performance neodymium iron boron magnetic materials. Melting is carried out in a vacuum or protective atmosphere, which can effectively ensure the purity and special performance of the materials. The first process in the neodymium iron boron production field is vacuum induction melting, which melts metal formulations with different proportions, and forms high-quality qualified high-performance ribbon thin slices after copper roll cooling. The production of high-performance neodymium iron boron ribbon slices is crucial to the magnetic material industry, and the product quality and production efficiency directly affect the development of related industries. With the progress of science and technology and the growth of market demand, the requirements for neodymium iron boron ribbon slice production equipment and process are also increasing.

[0003] In the prior art, the following two methods are mainly used to handle the intermediate ladle in the production process of neodymium iron boron ribbon slices. Method one: the copper roll is fixed in the vacuum melting furnace, and the intermediate ladle is fixed on the fixed frame in the furnace. After pouring is completed, a new intermediate ladle is manually replaced, and then the lower ladle of the intermediate ladle is manually attached to the copper roll, and the lower ladle of the intermediate ladle is ground to completely or approximately attach to the copper roll through the rotation of the copper roll. Method two: the copper roll and the intermediate ladle are installed on a trolley, the trolley enters the melting chamber to work, the copper roll exits the melting chamber and enters the preparation chamber, the copper roll is polished, and the intermediate ladle is manually replaced. This method is more advanced than method one. Since a preparation chamber is added, the copper roll trolley exits to the preparation chamber with the copper roll and the intermediate ladle, and the melting chamber can continuously work to melt metal while the copper roll is polished and the intermediate ladle is replaced.

[0004] In the melting furnace, the melting is generally carried out by filling argon inward. However, in the above two schemes, the argon in the chamber is basically lost when the intermediate ladle is replaced, and the furnace needs to be filled with argon again to continue the melting work. The consumption of argon is large, which is easy to waste and the cost is also large. SUMMARY

[0005] In order to reduce the consumption of argon when replacing the intermediate ladle and reduce the production cost, the purpose of the present application is to provide an intermediate ladle in-out transmission device. The technical scheme adopted is as follows: It comprises a melting chamber, an intermediate ladle, a transmission mechanism and an intermediate ladle replacement chamber. The intermediate ladle is arranged in the intermediate ladle replacement chamber. The melting chamber and the intermediate ladle replacement chamber are communicated, and a sealing door is arranged at the connection between the melting chamber and the intermediate ladle replacement chamber. The transmission mechanism comprises a sliding plate and a first guide rail, the tundish is arranged on the sliding plate, the bottom of the sliding plate is in sliding connection with the first guide rail, one end of the first guide rail is arranged in the tundish replacement chamber, and the other end extends into the smelting chamber, and the sliding plate is used to drive the tundish to move between the tundish replacement chamber and the smelting chamber; the first guide rail is disconnected at the sealing door, and the length of the sliding plate is greater than the gap of the disconnected part.

[0006] By adopting the above technical scheme, the tundish replacement chamber and the sealing door are arranged, the tundish is quickly and sealingly switched between the smelting chamber and the replacement chamber, and therefore the production efficiency and safety are significantly improved; meanwhile, when the tundish is replaced, the sealing door is opened, the argon in the smelting chamber enters the replacement chamber, and at most, the argon of the size of the replacement chamber space is consumed, and only the corresponding argon amount of the smelting chamber needs to be supplemented, so that the entire smelting chamber does not need to be refilled, the consumption of argon in the smelting chamber is reduced, and the production cost is reduced; the transmission mechanism adopts the design of the sliding plate and the first guide rail, and the length of the sliding plate is greater than the gap of the disconnected part of the guide rail, so that the tundish is stably transitioned during movement, leakage or pollution is avoided, the replacement process is simplified, the equipment downtime is reduced, and the transmission mechanism is suitable for a continuous production environment.

[0007] Optionally, the tundish comprises an upper tundish, an upper tundish support, a lower tundish and a lower tundish base, the upper tundish is detachably arranged on the upper tundish support, the upper tundish support is fixedly arranged on the lower tundish base, and the lower tundish is detachably arranged on the lower tundish base; the upper tundish and the lower tundish are in communication, a feeding port of the upper tundish reaches a discharging port of the lower tundish through the lower tundish, and a continuous flow channel is formed.

[0008] By adopting the above technical scheme, the detachable upper tundish and lower tundish are adopted, so that maintenance and replacement are more convenient, and the maintenance cost is reduced; the upper tundish and the lower tundish are in communication to form a continuous flow channel, the smooth transmission of molten metal is ensured, the plugging and temperature loss are reduced, the stability of the casting process and the product quality are improved, and the modular structure allows flexible adjustment and configuration to adapt to different production requirements.

[0009] Optionally, the lower tundish adopts an aluminum alloy frame structure, and two layers of mullite heat insulation layers are fixed to the inner wall of the frame.

[0010] By adopting the above technical scheme, the aluminum alloy frame provides lightweight and high-strength support, and prolongs the service life of the equipment; the mullite heat insulation layer effectively reduces heat loss, maintains the temperature stability of the molten metal, and reduces energy consumption; meanwhile, the heat insulation layer can also prevent damage to the frame caused by high temperature, and improves the safety and durability of the equipment, and is suitable for high-temperature smelting environment.

[0011] Optionally, the bottom of the sliding plate is provided with a first pulley set, and the first pulley set is in sliding connection with the first guide rail; the sliding plate is provided with a second guide rail perpendicular to the first guide rail, and the bottom of the tundish base is provided with a second pulley set, and the second pulley set is in sliding connection with the second guide rail.

[0012] By adopting the above technical scheme, the double guide rails and the pulley set design realize the flexible movement of the tundish in the horizontal and vertical directions, ensure accurate positioning and smooth running; this structure reduces friction and wear, improves transmission efficiency, and makes the tundish easier to align and adjust, improving the operation convenience and the reliability of the overall equipment.

[0013] Optionally, the sliding plate is further provided with a driving assembly, and the driving assembly includes a first driving member and a second driving member, the first driving member is used to drive the sliding plate to move along the first guide rail, and the second driving member is used to drive the tundish to move along the second guide rail.

[0014] By adopting the above technical scheme, through automatic driving control, the accuracy and automation of the tundish in and out process are realized, manual intervention is reduced, and production efficiency and consistency are improved; the driving assembly allows fine adjustment of the moving speed and the horizontal position, ensures accurate docking of the tundish and the smelting chamber equipment, reduces operation errors, and is suitable for high-precision casting process.

[0015] Optionally, the smelting chamber is provided with a copper roller and a water-cooled copper roller trolley, the copper roller is arranged on the water-cooled copper roller trolley, the first guide rail in the smelting chamber is arranged on the water-cooled copper roller trolley, and when the tundish moves to the side of the copper roller, the discharge port of the tundish is attached to the curved surface of the copper roller.

[0016] By adopting the above technical scheme, the copper roller is combined with the water cooling system to provide high-efficiency cooling capacity, ensuring rapid solidification and forming of the molten metal; the tundish discharge port is attached to the curved surface of the copper roller to ensure uniform distribution and continuous pouring of the metal liquid, reduce defects, and at the same time, the guide rail is integrated on the trolley, so that the tundish movement is coordinated with the copper roller position, improving production continuity and product quality.

[0017] Optionally, it further includes a positioning mechanism, the positioning mechanism is arranged in the tundish changing chamber and located at one side of the tundish discharge port, the positioning mechanism is coaxial with the copper roller, the tundish discharge port is in contact with the positioning mechanism, and the tundish discharge port can be accurately attached to the curved surface of the copper roller when the tundish moves to the side of the copper roller.

[0018] By adopting the technical scheme, the positioning mechanism contacts the tundish discharge port, ensures that the discharge port is precisely fitted with the copper roll curved surface when the tundish moves to the side of the copper roll, and avoids metal liquid leakage or misplacement; this design improves installation precision, reduces adjustment time, ensures the stability and consistency of the pouring process, and thus optimizes production efficiency and product qualification rate.

[0019] Optionally, a fine adjustment assembly is arranged on the positioning mechanism, and the fine adjustment assembly is used to adjust the size of the positioning mechanism, so that the positioning mechanism is coaxial with the copper roll.

[0020] By adopting the technical scheme, the fine adjustment assembly allows fine adjustment of the positioning mechanism, ensures the coaxiality of the positioning mechanism and the copper roll, and can quickly correct even if the equipment is worn or deviated; this improves the adaptability and precision of the system, reduces production interruptions caused by inaccurate alignment, prolongs the service life of the equipment, is simple to maintain, and reduces long-term operating costs.

[0021] Optionally, two hinged doors are arranged on the tundish replacement chamber, one of which is located near the positioning mechanism, and the other is located near the tundish.

[0022] By adopting the technical scheme, the hinged door located on the side of the positioning mechanism facilitates the adjustment of the size of the positioning mechanism by the operator, and the hinged door located on the side of the tundish facilitates the maintenance and replacement of the tundish, improving accessibility and safety; the two doors are located on the sides of the positioning mechanism and the tundish, respectively, optimizing the work flow, allowing multiple operations to be performed simultaneously, reducing replacement time, and enhancing the practicality and humanized design of the equipment.

[0023] In summary, the present application has the following at least one beneficial technical effect: 1. When replacing the tundish, the sealed door is opened, and the argon in the smelting chamber will enter the replacement chamber, at most consuming argon equal to the size of the replacement chamber space, and only the corresponding argon amount needs to be supplemented in the smelting chamber, without the need to refill the entire smelting chamber, reducing the consumption of argon in the smelting chamber and reducing production costs; the transmission mechanism adopts the design of a sliding plate and a first guide rail, and the length of the sliding plate is greater than the gap of the disconnected part of the guide rail, ensuring smooth transition of the tundish during movement and avoiding leakage or contamination, while simplifying the replacement process and reducing equipment downtime, suitable for continuous production environment; 2. The device adopts a multi-level precise positioning system, including the positioning mechanism coaxial with the copper roll and the fine adjustment assembly thereof, ensuring that the tundish discharge port can be precisely fitted with the cooling copper roll curved surface. At the same time, the cooperation of the driving member and the double-rail pulley block realizes flexible and accurate movement of the tundish in the horizontal longitudinal and transverse directions. This not only effectively prevents metal liquid leakage, ensures the stability of the pouring process and the quality of the cast strip, but also reduces the difficulty and error of manual adjustment; 3. The lower ladle of the tundish adopts a composite structure of aluminum alloy frame and mullite heat insulation layer, which provides excellent heat preservation performance while ensuring structural strength, reduces heat loss to save energy and reduce consumption. In addition, the detachable ladle design, the hinged door set in the replacement room and other humanized designs make daily maintenance, component replacement and operator access more convenient and safe. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the overall structure schematic diagram of the transmission device; Figure 2 is the structure schematic diagram of the tundish, transmission mechanism and positioning mechanism; Figure 3 is the structure schematic diagram of the copper roller, water-cooled copper roller trolley, tundish and transmission mechanism; Figure 4 is the front view structure schematic diagram of the tundish and transmission mechanism; Figure 5 is the structure schematic diagram of the tundish, transmission mechanism and positioning mechanism in the tundish replacement room; In the drawings, 1, smelting chamber, 11, copper roller, 12, water-cooled copper roller trolley; 2, tundish, 21, upper ladle, 22, upper ladle support, 23, lower ladle, 24, lower ladle base; 3, transmission mechanism, 31, sliding plate, 32, first guide rail, 33, first pulley set, 34, second guide rail, 35, second pulley set, 36, drive assembly, 37, first drive, 38, second drive; 4, tundish replacement room, 41, hinged door; 5, positioning mechanism, 51, mold, 52, fine adjustment assembly; 6, sealing door. DETAILED DESCRIPTION

[0025] The following will be described in detail in combination with the drawings Figure 1 - the drawings Figure 5 , the present application will be further described in detail.

[0026] A tundish 2 access transmission device, referring to Figure 1 and Figure 2, including smelting chamber 1, tundish 2, transmission mechanism 3 and tundish replacement chamber 4, wherein the smelting chamber 1 and the tundish replacement chamber 4 are communicated with each other, a sealing door 6 is arranged at the connection of the smelting chamber 1 and the tundish replacement chamber 4, the tundish 2 is arranged in the tundish replacement chamber 4, and the transmission mechanism 3 is used to drive the tundish 2 to move between the tundish replacement chamber 4 and the smelting chamber 1, so that the tundish 2 can independently enter and exit the furnace body, the production efficiency is improved, and the safety hidden danger and argon consumption are reduced. This is because the transmission mechanism 3 can make the tundish 2 move flexibly between the two chambers, avoiding frequent manual operation; at the same time, when the tundish 2 is replaced, the sealing door 6 is opened, and the argon in the smelting chamber 1 will enter the replacement chamber, at most only consuming the argon of the size of the replacement chamber space, and only the corresponding argon amount needs to be supplemented in the smelting chamber 1, without the need to refill the entire smelting chamber 1, reducing the consumption of argon in the smelting chamber 1 and reducing the production cost.

[0027] Specifically, referring to Figure 2 , the transmission mechanism 3 includes a sliding plate 31 and a first guide rail 32. The sliding plate 31 is a flat plate structure, usually made of high-strength metal material, and is heat-resistant to ensure that it can withstand the weight of the tundish 2 and adapt to the high-temperature environment. The bottom of the sliding plate 31 is provided with a first pulley set 33, which can be a structure composed of multiple pulleys, and the pulleys are also made of metal heat-resistant material and are installed on the bottom of the sliding plate 31 through bearings. The first pulley set 33 is in sliding connection with the first guide rail 32, and the first guide rail 32 can be a vacuum roller guide rail, which is arranged in the tundish replacement chamber 4 at one end and extends into the smelting chamber 1 at the other end.

[0028] Referring to Figure 1 , since there is a sealing door 6 at the connection of the smelting chamber 1 and the tundish replacement chamber 4, the first guide rail 32 cannot be connected in one piece, and the first guide rail 32 at the sealing door 6 will be disconnected, forming two sections of guide rails, as shown in Figure 2 and Figure 3 , respectively. The first guide rail 32 shown above, and the length of the sliding plate 31 is designed to be greater than the gap of the disconnected part, and the pulley set is evenly distributed along the length of the first guide rail 32 at the bottom of the sliding plate 31. In this way, when the sliding plate 31 moves to the disconnected part, the pulleys near the disconnected part will preferentially vacate and separate from the first guide rail 32, and the sliding plate 31 can still rely on its own length and the pulleys on the guide rail behind to cross the gap and continue to move. The pulleys in front return to the first guide rail 32, the pulleys behind are separated, and the sliding plate 31 can still rely on its own length and the pulleys on the guide rail in front to continue to move. In this way, the sliding plate 31 returns to the tundish replacement chamber 4, which is the same operation, solving the problem of crossing the disconnected first guide rail 32 at the sealing door.

[0029] Further, referring to Figure 3, the smelting chamber 1 is provided with a copper roller 11 and a water-cooled copper roller trolley 12, the copper roller 11 is arranged on the water-cooled copper roller trolley 12, and meanwhile, the first guide rail 32 located in the smelting chamber 1 is arranged on the water-cooled copper roller trolley 12 and at the side of the copper roller 11. When the tundish 2 moves from the tundish changing chamber 4 to the side of the copper roller 11 in the smelting chamber 1, the discharge port of the tundish 2 will be fitted with the curved surface at the side of the copper roller 11. Of course, there can also be a gap between the discharge port and the copper roller 11, as long as the size of the gap is between 0-0.5mm. After the metal molten solution flows out of the discharge port of the tundish 2, it is cooled by the water-cooled copper roller 11 to form a metal thin strip.

[0030] Further, referring to Figure 2 , the tundish 2 comprises an upper tundish 21, an upper tundish support 22, a lower tundish 23 and a lower tundish base 24. The upper tundish 21 is usually a funnel container structure with an upper opening and a lower opening. The upper tundish 21 is detachably mounted on the upper tundish support 22. The upper tundish support 22 is a frame structure that supports the upper tundish 21 and is made of metal by welding. The lower tundish 23 is also detachably arranged on the lower tundish base 24, and the upper tundish support 22 is fixedly arranged on the lower tundish base 24. The upper tundish 21 is in communication with the lower tundish 23, and the inlet of the upper tundish 21 reaches the outlet of the lower tundish 23 through the lower tundish 23 to form a continuous flow channel. The metal molten solution enters the upper tundish 21 from the inlet through the crucible nozzle, then flows out of the lower opening to the lower tundish 23, and then flows out of the outlet of the lower tundish 23 to the water-cooled copper roller 11 to form a metal thin strip after cooling.

[0031] Because the metal molten solution flows from the upper tundish 21 to the lower tundish 23 and then flows out, the metal molten solution will finally leave metal residues on the upper tundish 21 and the lower tundish 23. After solidification, there will be a certain angle near the discharge port. The solidified metal residues will rub against the copper roller 11, thereby causing wear on the surface of the copper roller 11. Therefore, the lower tundish 23 needs to be replaced every time a furnace is completed to ensure that there is no solidified metal residue remaining to wear the copper roller 11 during each operation. Because the upper tundish 21 does not directly contact the copper roller 11, the presence of metal residues has no significant impact. In order to reduce costs and reduce the number of replacements, the upper tundish 21 can be replaced after 3-5 furnaces are completed. Replacement is also necessary to prevent the upper tundish 21 from being clogged by too much metal residue after multiple uses, thereby affecting the flow of metal molten solution and reducing work efficiency.

[0032] Further, the lower tundish 23 of the tundish 2 adopts an aluminum alloy frame structure, and two layers of mullite heat insulation layers are fixedly arranged on the inner wall of the frame. The aluminum alloy frame has the advantage of light weight, which can reduce the working intensity of workers and also meet the use requirements in high temperature environment. The mullite heat insulation layers can effectively prevent heat loss and ensure the temperature of the metal molten solution.

[0033] Further, referring to Figure 4The upper surface of the sliding plate 31 is provided with a second guide rail 34 perpendicular to the first guide rail 32, and the second guide rail 34 can also adopt a roller guide rail. The bottom of the corresponding tundish base 24 is provided with a second pulley set 35, which is in sliding connection with the second guide rail 34, so that the tundish 2 can move laterally on the sliding plate 31.

[0034] Further, referring to Figure 4 The sliding plate 31 is further provided with a driving assembly 36, which includes a first driving member 37 and a second driving member 38. The first driving member 37 can be a vacuum high-temperature servo motor, which drives the sliding plate 31 to move along the first guide rail 32 through gear and rack transmission. The second driving member 38 can also adopt a similar servo motor, which is used to drive the tundish 2 to move along the second guide rail 34.

[0035] Further, referring to Figure 5 The device further includes a positioning mechanism 5, which is arranged in the tundish changing chamber 4 and located on one side of the discharge port of the tundish 2. The positioning mechanism 5 includes a mold 51, which can be an adjustable stroke fear device, similar to a tool setting function, used to make the discharge port of the tundish 2 accurately fit the curved surface of the copper roller 11 when the tundish 2 moves beside the copper roller 11. The positioning mechanism 5 is provided with a fine adjustment assembly 52, which can be a lead screw and nut mechanism. The position of the mold 51 is adjusted by rotating the lead screw, so that the mold 51 and the copper roller 11 maintain coaxiality, and at this time the calibration line of the mold 51 and the edge of the copper roller 11 are in the same horizontal line. Similarly, it can also be a sliding block and a sliding rail. The mold 51 is arranged on the sliding block, the bottom of the sliding block is in sliding connection with the sliding rail, and the sliding rail is arranged in a direction perpendicular to the tundish 2, so that the sliding block can move laterally to approach or move away from the discharge port of the tundish 2. After adjusting the position of the sliding block, the sliding block is locked on the sliding rail by a bolt fastener, which adjusts the position of the mold 51.

[0036] When calibrating, the second drive drives the sliding plate 31 to move laterally, so that the outlet of the tundish 23 is aligned with the mold 51 of the positioning mechanism 5, then the second drive drives the sliding plate 31 to move in the opposite direction by a precise distance, for example 5 cm, then the first drive 37 drives the sliding plate 31 to move the tundish 2 to the smelting chamber 1, when moving to the side of the copper roller 11, the second drive 38 drives the sliding plate 31 to move laterally again, that is, to move 5 cm to the copper roller 11, so as to complete the precise fitting of the outlet of the tundish 2 and the curved surface of the copper roller 11. Due to long-term work, the surface of the copper roller 11 will be worn, so that the diameter of the copper roller 11 changes, if the previous calibration is continued, a gap will be formed between the outlet of the tundish 2 and the curved surface of the copper roller 11, which will reduce the cooling efficiency of the molten metal, at this time, the position of the mold 51 needs to be adjusted to keep the coaxiality with the copper roller 11, and the precise fitting of the outlet of the tundish 2 and the curved surface of the copper roller 11 can still be maintained in subsequent work.

[0037] Further, referring to Figure 5 , the intermediate tundish changing chamber 4 is provided with two hinged doors 41, one of which is located near the positioning mechanism 5, and the other is located near the tundish 2. The hinged door 41 near the positioning mechanism 5 facilitates workers to adjust the stroke and keep coaxiality with the copper roller 11 in the furnace which is gradually worn, and the hinged door near the tundish 2 facilitates the replacement of the tundish 2.

[0038] Further, the first guide rail 32 of the transmission mechanism 3 can be replaced by a chain transmission instead of a gear and rack transmission. The chain transmission mechanism 3 includes a chain and a sprocket, the chain is installed at the bottom of the sliding plate 31, and the sprocket is arranged in the intermediate tundish changing chamber 4 and the smelting chamber 1 respectively, and the sprocket is driven to rotate by a motor, so as to drive the chain and the sliding plate 31 to move.

[0039] The chain transmission has the advantages of stable transmission and low noise, and can improve the stability and reliability of the transmission mechanism 3 to a certain extent. At the same time, the maintenance cost of the chain transmission is relatively low, and the maintenance workload of the equipment is reduced.

[0040] The implementation principle of the embodiment is: the embodiment realizes the independent movement of the tundish 2 between the intermediate tundish changing chamber 4 and the smelting chamber 1 through the transmission mechanism 3, avoids frequent manual operation, and improves the production efficiency. At the same time, the setting of the intermediate tundish changing chamber 4 reduces the consumption of argon and reduces the cost. The setting of the positioning mechanism 5 and the fine adjustment assembly 52 ensures the precise fitting of the outlet of the tundish 2 and the copper roller 11, and improves the product quality. In addition, the lower tundish 23 of the tundish 2 adopts the structure of an aluminum alloy frame and a mullite heat insulation layer, which reduces the weight and the working strength of the workers.

[0041] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tundish (2) in-out drive device, characterized in that, It comprises a smelting chamber (1), a tundish (2), a transmission mechanism (3) and a tundish replacement chamber (4); The tundish (2) is arranged in the tundish replacement chamber (4); The smelting chamber (1) is communicated with the tundish replacement chamber (4), and a sealing door (6) is arranged at the joint of the smelting chamber (1) and the tundish replacement chamber (4); The transmission mechanism (3) comprises a sliding plate (31) and a first guide rail (32), the tundish (2) is arranged on the sliding plate (31), the bottom of the sliding plate (31) is slidably connected with the first guide rail (32), one end of the first guide rail (32) is arranged in the tundish replacement chamber (4), and the other end extends into the smelting chamber (1), the sliding plate (31) is used for driving the tundish (2) to move between the tundish replacement chamber (4) and the smelting chamber (1), the first guide rail (32) is disconnected at the sealing door (6), and the length of the sliding plate (31) is greater than the gap of the disconnected part.

2. A tundish (2) entry and exit transmission device according to claim 1, characterized in that, The tundish (2) comprises an upper tundish (21), an upper tundish support (22), a lower tundish (23) and a lower tundish base (24), the upper tundish (21) is detachably arranged on the upper tundish support (22), the upper tundish support (22) is fixedly arranged on the lower tundish base (24), and the lower tundish (23) is detachably arranged on the lower tundish base (24); the upper tundish (21) is communicated with the lower tundish (23), a feeding port of the upper tundish (21) reaches a discharging port of the lower tundish (23) through the lower tundish (23), and a continuous flow channel is formed.

3. A tundish (2) entry and exit transmission device according to claim 2, characterized in that, The lower tundish (23) adopts an aluminum alloy frame structure, and two layers of mullite heat insulation layers are fixedly arranged on the inner wall of the frame.

4. A tundish (2) entry and exit transmission device according to claim 2, characterized in that A first pulley set (33) is arranged at the bottom of the sliding plate (31), and the first pulley set (33) is slidably connected with the first guide rail (32); a second guide rail (34) perpendicular to the first guide rail (32) is arranged on the sliding plate (31), and a second pulley set (35) is arranged at the bottom of the lower tundish base (24), and the second pulley set (35) is slidably connected with the second guide rail (34).

5. A tundish (2) in-out drive according to claim 4, characterized in that, A driving assembly (36) is further arranged on the sliding plate (31), the driving assembly (36) comprises a first driving member (37) and a second driving member (38), the first driving member (37) is used for driving the sliding plate (31) to move along the first guide rail (32), and the second driving member (38) is used for driving the tundish (2) to move along the second guide rail (34).

6. A tundish (2) in-out drive according to claim 1, characterized in that, A copper roller (11) and a water-cooled copper roller trolley (12) are arranged in the smelting chamber (1), the copper roller (11) is arranged on the water-cooled copper roller trolley (12), the first guide rail (32) arranged in the smelting chamber (1) is arranged on the water-cooled copper roller trolley (12), and when the tundish (2) moves to the side of the copper roller (11), the discharging port of the tundish (2) is attached to the curved surface of the copper roller (11).

7. A tundish (2) in-out drive according to claim 6, characterized in that, The positioning mechanism (5) is arranged in the tundish replacement chamber (4) and is located at one side of the tundish (2) discharge port, the positioning mechanism (5) is coaxial with the copper roller (11), the tundish (2) discharge port is in contact with the positioning mechanism (5), and the tundish (2) discharge port can be precisely matched with the curved surface of the copper roller (11) when the tundish (2) moves to the side of the copper roller (11).

8. A tundish (2) entry and exit transmission according to claim 7, characterized in that, A fine adjustment assembly (52) is arranged on the positioning mechanism (5), and the fine adjustment assembly (52) is used for adjusting the size of the positioning mechanism (5), so that the positioning mechanism (5) is coaxial with the copper roller (11).

9. A tundish (2) in-out drive according to claim 8, characterized in that, Two hinged doors (41) are arranged on the tundish replacement chamber (4), one of the hinged doors (41) is located on the side close to the positioning mechanism (5), and the other hinged door (41) is located on the side close to the tundish (2).

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