Crucible extraction device for rare earth electrolytic furnace with positioning correction

Abstract

The utility model discloses a kind of with positioning correction's rare earth electrolytic furnace is used to crucible extraction device, comprising: crucible extraction module, including fixedly arranged on base layer base assembly, and clamping assembly is movably arranged on base assembly, three-axis moving assembly is equipped between the clamping assembly and base assembly, the clamping assembly includes several clamping units, the clamping unit relatively acts to grab or release crucible;Electrolytic furnace module, including fixedly arranged furnace body, and furnace platform assembly is arranged in the circumferential side of furnace body, at least one correction plate is equipped on the furnace platform assembly, multiple correction points are arranged on the correction plate, and the correction point is arranged about the grab pose or open pose of clamping unit.

Description

Technical Field

[0001] This utility model relates to the technical field of rare earth electrolysis, specifically to a crucible extraction device for a rare earth electrolysis furnace with positioning correction. Background Technology

[0002] Currently, rare earth electrolysis is the main method for producing rare earth metals. As the main equipment in this process, the structure of the electrolytic cell directly affects the quality of rare earth metal products, working efficiency, and production costs. Existing electrolytic furnaces typically have a molybdenum pot for collecting rare earth metals placed at the bottom of the furnace, with graphite anodes installed around the furnace chamber and a tungsten rod inserted in the middle of the furnace chamber as the cathode. Molten salt is contained in the furnace chamber. Under the action of the inter-electrode electric field between the cathode and anode, the molten salt heats up as a resistance and melts, while maintaining the temperature required for the electrolysis process.

[0003] After the electrolysis is completed, the crucible needs to be taken out of the furnace through a movable clamping device. The crucible and the metal inside are quite heavy, and the metal inside the crucible is still in a liquid state. At this time, the clamping stability of the crucible is particularly important, and the center alignment of the clamping device is one of the important factors for crucible transportation.

[0004] In existing technologies, clamping devices are usually set up independently. The initial state of multiple clamping arms in the clamping device has positional deviations, and each replacement and adjustment, as well as long-term operation, will affect the stability of the relative position of the clamping arms to a certain extent, which will have an adverse effect on the crucible extraction operation. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a crucible extraction device for rare earth electrolysis furnace with positioning correction.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a crucible extraction device for a rare earth electrolysis furnace with positioning correction, comprising:

[0007] The crucible extraction module includes a base assembly fixedly mounted on a base layer and a clamping assembly movably mounted on the base assembly. A three-axis moving assembly is provided between the clamping assembly and the base assembly. The clamping assembly includes several clamping units, which move relative to each other to grasp or release the crucible.

[0008] An electrolytic furnace module includes a fixed furnace body and a furnace platform assembly arranged around the furnace body. The furnace platform assembly is provided with at least one correction plate and a plurality of correction points corresponding to the clamping unit are arranged on the correction plate. The correction points are arranged with respect to the gripping or opening posture of the clamping unit.

[0009] Furthermore, the furnace platform assembly is mounted on the base layer and configured to be on the same horizontal level as the base assembly.

[0010] Furthermore, the plurality of correction points are arranged circumferentially, and the correction points define a correction profile, the correction center of which corresponds to the clamping center of the clamping unit.

[0011] Furthermore, the plurality of correction points are configured as a first correction group and a second correction group arranged with the gripping or opening posture of the clamping unit, and the correction points in the first correction group and the second correction group form a circumferentially arranged correction contour.

[0012] Furthermore, the base assembly includes a support base connected to the three-axis moving assembly, a base plate fixed on the base layer, and a positioning plate fixed on the base plate. The positioning plate is provided with at least one positioning post, and the bottom of the support base is provided with a positioning hole that matches the positioning post. The positioning post and the positioning hole are set about the rotation center of the clamping assembly.

[0013] Furthermore, the substrate is embedded in the base layer and is horizontal to the surface of the base layer, and the base layer is provided with multiple embedded parts, which are inserted through and extend out of the substrate, and the positioning plate is fixedly connected to the embedded parts.

[0014] Furthermore, the embedded part has a threaded portion extending from the base layer and the positioning plate, and the end of the threaded portion is provided with a nut. The bottom of the support base is provided with a clearance hole that matches the nut.

[0015] Furthermore, the embedded part is configured with respect to the outline of the clearance hole, and / or the clearance hole is configured with respect to the outline of the positioning hole.

[0016] Furthermore, the furnace platform assembly includes a support platform fixed on the horizontal surface of the base layer, and a conductive furnace platform arranged above the support platform. An upper support column is provided between the conductive furnace platform and the support platform, and a lower support column is provided inside the support platform. The upper support column and the lower support column are fixedly connected by bolts and abut against the end of the correction plate.

[0017] Furthermore, the clamping assembly includes a clamping seat, a driving gear disposed at the center of the clamping seat, a driven gear meshing around the driving gear, and a rack meshing with the driven gear. The rack passes through the clamping seat, and a rotating shaft passes through the end of the rack. The clamping unit is hinged to the rotating shaft.

[0018] Furthermore, the clamping unit includes a transmission arm that is driven to the power end of the clamping assembly, and a clamping arm for performing gripping and releasing actions. The clamping arm is inserted into the bottom of the transmission arm, and there is a relatively cooperating inclined surface between the clamping arm and the transmission arm. The clamping arm and the transmission arm are fixedly connected by bolts, and the bolts are inserted through the inclined surface.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects: The present invention sets a correction plate on the furnace platform assembly and sets multiple correction points on the correction plate. After the crucible extraction module is installed on the base layer, the three-axis moving assembly drives the clamping unit to the top of the correction plate and moves the clamping unit down to align with the correction points. The number of correction points matches the number of correction units. The operator can intuitively confirm whether the clamping unit is aligned to the gripping or opening position, so that the operator can adjust the position of the clamping unit with deviation, improve the gripping stability of the crucible, and avoid the risk of liquid metal overturning due to clamping deviation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a top view of the electrolytic furnace module of this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the clamping assembly of this utility model;

[0024] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 This is an exploded view of the base assembly of this utility model;

[0026] Figure 7 This is an exploded view of the base assembly of this utility model from another angle;

[0027] Figure 8 This is a partial cross-sectional view of the positioning post of this utility model;

[0028] Figure 9 This is a schematic diagram of the bolt layout of the positioning plate of this utility model;

[0029] Figure 10 This is a partial cross-sectional view of the clearance hole of this utility model;

[0030] Figure 11 This is a cross-sectional view of the electrolytic furnace module of this utility model;

[0031] Figure 12 This is an exploded view of the electrolytic furnace module of this utility model;

[0032] Figure 13This is an exploded view of the upper support column, lower support column, and correction plate of this utility model;

[0033] Figure 14 This is a schematic diagram of another embodiment of the correction plate of this utility model;

[0034] Figure 15 This is a schematic diagram of another embodiment of the correction plate of this utility model;

[0035] In the diagram: 1. Crucible extraction module; 2. Electrolytic furnace module; 2.1. Furnace body; 2.2. Furnace platform assembly; 2.21. Support platform; 2.22. Conductive furnace platform; 2.23. Upper support column; 2.24. Lower support column; 2.25. First flange face; 2.26. Second flange face;

[0036] 3. Base assembly; 3.1 Support base; 3.11 Positioning hole; 3.12 Clearance hole; 3.2 Base plate; 3.3 Positioning plate; 3.31 Positioning post; 3.4 Embedded part; 3.41 Threaded part; 3.42 Nut;

[0037] 4. Clamping assembly; 4.1 Clamping unit; 4.11 Transmission arm; 4.12 Clamping arm; 4.13 Inclined surface; 4.2 Linkage block; 4.3 Linkage groove;

[0038] 5. Three-axis moving assembly; 5.1 Rotation module; 5.2 Vertical moving module; 5.3 Linear moving module;

[0039] 6. Calibration plate; 6.1. Calibration point; 6.2. First calibration group; 6.3. Second calibration group; 6.4. Connecting part;

[0040] 7. Base layer; 8. First adjustment position; 9. First adjustment bolt position; 10. Second adjustment bolt position; 11. First fixed area; 12. Second fixed area; 13. Third fixed area; 14. Reference column; 15. Distance sensor; Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0043] like Figure 1-13 As shown, a crucible extraction device for a rare earth electrolysis furnace with positioning correction includes:

[0044] The crucible extraction module 1 includes a base assembly 3 fixedly mounted on the base layer 7 and a clamping assembly 4 movably mounted on the base assembly 3. A three-axis moving assembly 5 is provided between the clamping assembly 4 and the base assembly 3. The three-axis moving assembly 5 provides at least the lifting and rotation of the clamping assembly 4 on the Z-axis and the driving force for linear movement in the horizontal direction.

[0045] The clamping assembly 4 includes a three-jaw chuck and a plurality of clamping units 4.1 disposed on the three-jaw chuck. The clamping units 4.1 perform relative approaching and moving away actions through the three-jaw chuck to grasp or release the crucible.

[0046] The electrolytic furnace module 2 includes a fixed furnace body 2.1 and a furnace platform assembly 2.2 disposed around the furnace body 2.1. The furnace body 2.1 passes through the furnace platform assembly 2.2, and the furnace body 2.1 forms an electrolytic chamber. A crucible for collecting metal is arranged in the electrolytic chamber. The furnace platform assembly 2.2 is provided with at least one correction plate 6. The correction plate 6 is exposed on the end face of the furnace platform assembly 2.2 and is positioned towards the clamping unit 4.1. The correction plate 6 is preferably located at the end of the end face of the furnace platform assembly 2.2. The correction plate 6 is provided with a plurality of correction points 6.1 corresponding to the clamping unit 4.1. The correction points 6.1 are arranged with respect to the gripping or opening posture of the clamping unit 4.1, and the correction plate 6 is located within the adjustment range of the three-axis moving assembly 5 actuating the clamping assembly 4.

[0047] Reference Figure 9 and Figure 10 As shown, in this embodiment, the base layer 7 is used to provide a horizontal base surface. The base layer 7 can be set as a concrete layer. The furnace platform assembly 2.2 is set on the base layer 7, so that the correction plate 6 arranged on the end face of the furnace platform assembly 2.2 and the base assembly 3 are set to the same horizontal reference, thereby improving the reliability of the correction reference of the correction plate 6.

[0048] As one embodiment of the calibration point 6.1, the calibration point 6.1 can be a calibration pattern reference flush with the end face of the calibration plate 6, or it can be composed of multiple calibration posts disposed on the calibration plate 6. The calibration posts pass through the calibration plate 6 to form the calibration point 6.1. The calibration posts extend out of or are flush with the end face of the calibration plate 6. Alternatively, the calibration plate 6 can be adjusted by adjusting the relative height of the calibration posts. For example, the calibration posts can be fixed to the calibration plate 6 by threads.

[0049] like Figure 2 and Figure 3 As shown, as a further arrangement of the calibration point 6.1 and the clamping unit 4.1, there are multiple clamping units 4.1 arranged in a circumferential direction, and multiple calibration points 6.1 are arranged circumferentially, and the calibration points 6.1 define a calibration contour. This calibration contour is consistent with the expected contour of the clamping unit 4.1, and the calibration center of the calibration contour corresponds to the clamping center of the clamping unit 4.1. That is, after the calibration of the clamping unit 4.1 and the calibration point 6.1 is completed, the center alignment of the clamping unit 4.1 is also completed at the same time.

[0050] Specifically, multiple correction points 6.1 are configured as a first correction group 6.2 and a second correction group 6.3 arranged with the gripping or opening posture of the clamping unit 4.1, and the correction points 6.1 in the first correction group 6.2 and the second correction group 6.3 form a circumferentially arranged correction contour.

[0051] like Figure 3 As shown, as an example, the first correction group 6.2 and the second correction group 6.3 can be multiple correction points 6.1 set on the same circumference. Their purpose is to match the clamping unit 4.1 under different rotation angles to improve the convenience of the correction reference work. In this embodiment, the number of correction points 6.1 is 6, and they are set at equal angular intervals about the circumference. The number of clamping units 4.1 is 3.

[0052] like Figure 14 As shown, as another example, the first correction group 6.2 and the second correction group 6.3 can also be configured such that the first correction group 6.2 corresponds to the gripping pose of the clamping unit 4.1, and the second correction group 6.3 corresponds to the opening pose of the clamping unit 4.1, thereby forming two concentric correction contours to further improve the correction accuracy of the clamping unit 4.1. Of course, the first correction group 6.2 and the second correction group 6.3 can also be configured as multiple correction points 6.1 at the same time, thereby improving the correction convenience while improving the correction accuracy.

[0053] It should be noted that the number of correction groups is not limited to the first correction group 6.2 and the second correction group 6.3 mentioned above; multiple correction groups can also be set.

[0054] like Figures 6 to 10 As shown, in some other embodiments, during the installation and debugging of the crucible extraction device, the entire base assembly 3 is usually disassembled, while the clamping assembly 4 is set on the base assembly 3 through a three-axis moving module. Therefore, the positional stability of the base assembly 3 also affects the positional correction of the clamping unit 4.1 to a certain extent. In this regard, the present invention makes further improvements to the installation structure of the base assembly 3.

[0055] Specifically, the base assembly 3 includes a support base 3.1 connected to the three-axis moving assembly 5, a base plate 3.2 fixed on the base layer, and a positioning plate 3.3 fixed on the base plate 3.2. The positioning plate 3.3 is provided with at least one positioning post 3.31. The bottom of the support base 3.1 is provided with a positioning hole 3.11 that matches the positioning post 3.31. The positioning post 3.31 and the positioning hole 3.11 are set about the rotation center of the clamping assembly 4. The center position of the base assembly 3 is corrected by the cooperation of the positioning post 3.31 and the positioning hole 3.11.

[0056] In addition, thanks to the modular base assembly 3, positioning plate 3.3 and base plate 3.2, the positioning post 3.31 is defined as the basic reference, so that after replacing or adjusting the base assembly 3, the base assembly 3 before and after adjustment can use the same positioning reference.

[0057] The positioning plate 3.3 and the base plate 3.2 are fixedly connected by a threaded connector. The threaded connector is arranged radially outward about the positioning post 3.31 and the positioning hole 3.11, forming a first fixing area 11 and a second fixing area 12 on the positioning plate 3.3. The support base 3.1 is fixedly connected to the positioning plate 3.3 by a threaded connector. A first adjustment position 8 for the threaded connector is arranged on the bottom periphery of the support base 3.1. The first adjustment position 8 is also correspondingly arranged on the positioning plate 3.3 and the base plate 3.2. Adjustment position 8 defines the third fixed area 13, which is located between the first fixed area 11 and the second fixed area 12. By adjusting the tightness of multiple threaded connectors in the fixed area, the levelness between the support base 3.1, the positioning plate 3.3 and the base plate 3.2 is adjusted. After the horizontal reference is leveled, the outline position of the clamping unit 4.1 is further adjusted by the correction plate 6. Furthermore, the vertical position of the clamping unit 4.1 is further adjusted by the vertical contact between the clamping unit 4.1 and the correction point 6.1.

[0058] In this embodiment, the three-axis motion module includes a rotation module 5.1 for providing rotation on the Z-axis, a vertical motion module 5.2 for lifting and lowering on the Z-axis, and a linear motion module 5.3 for linear movement on the horizontal plane. The vertical motion module 5.2 is disposed on the actuating end of the rotation module 5.1, the linear motion module 5.3 is disposed on the actuating end of the vertical motion module 5.2, and the clamping assembly 4 is disposed on the actuating end of the linear motion module 5.3. The aforementioned motion and rotation modules 5.1 are widely used motion modules in the art and will not be described in detail here.

[0059] Further reference Figure 9 and Figure 10 As shown, as a further embodiment of the base assembly 3, the substrate 3.2 is embedded in the base layer 7 and is horizontal to the surface of the base layer 7. The base layer 7 is provided with a plurality of embedded parts 3.4, which pass through and extend out of the substrate 3.2. The positioning plate 3.3 is fixedly connected to the embedded parts 3.4. By embedding the substrate 3.2 in the base layer 7, the substrate 3.2 is flush with the surface of the base layer 7 during embedding. The verticality adjustment of the embedded parts 3.4 ensures the horizontal error of the positioning plate 3.3, providing a reference for the collaborative operation of the electrolytic furnace module 2 and the clamping module. The embedded parts 3.4 are connected to the positioning plate 3.3 and the support base 3.1 as fixed connectors, which not only further optimizes the positional stability of the substrate 3.2, but also improves the convenience of docking the positioning plate 3.3, the support plate and the substrate 3.2.

[0060] The embedded part 3.4 has a threaded portion 3.41 extending from the base layer 7 and the positioning plate 3.3. A nut 3.42 is provided at the end of the threaded portion 3.41. The embedded part 3.4 constitutes the aforementioned threaded connector. The bottom of the support base 3.1 is provided with a clearance hole 3.12 that matches the nut 3.42. Specifically, the clearance hole 3.12 corresponds to the threaded connector within the first fixed area 11. Specifically, the outline of the embedded part 3.4 regarding the clearance hole 3.12 is set, and / or the outline of the clearance hole 3.12 regarding the positioning hole 3.11 is set. Through these improvements, the fixed connection positions between the support base 3.1, the positioning plate 3.3, and the base plate 3.2 are arranged radially with the central positioning post 3.31 and the positioning hole 3.11, improving the reliability of the base assembly 3's fixation and horizontal adjustment.

[0061] Preferably, the arrangement of the aforementioned clearance hole 3.12, the first fixing area 11, the second fixing area 12 and the third fixing area 13 is all arranged in a ring around the center of the positioning post 3.31.

[0062] In the above embodiments, the positioning plate 3.3 and the support base 3.1 in the base assembly 3 are aligned with the rotation center of the clamping assembly 4 by the cooperation of the positioning post 3.31 and the positioning hole 3.11. The nesting design of the embedded part 3.4 and the clearance hole 3.12 further eliminates the installation gap. The horizontal pre-embedding process of the substrate 3.2 and the base layer 7 ensures that the electrolytic furnace module 2 and the crucible extraction module 1 are on the same horizontal reference, reducing the cumulative error during multi-axis movement.

[0063] like Figures 11 to 13 As shown, as a further embodiment of the installation of the calibration plate 6, the furnace platform assembly 2.2 includes a support platform 2.21 fixed on the horizontal surface of the base layer 7, and a conductive furnace platform 2.22 arranged above the support platform 2.21. The furnace body 2.1 passes through the support platform 2.21. The conductive furnace platform 2.22 is used to arrange the anode graphite sheet. A conductive sheet group is provided between the conductive furnace platform 2.22 and the support furnace platform. Preferably, the support platform 2.21 is set on the substrate 3.2, so as to share a horizontal reference with the crucible extraction module 1.

[0064] Specifically, an upper support column 2.23 is provided between the conductive furnace platform 2.22 and the support platform 2.21, and a lower support column 2.24 is provided inside the support platform 2.21. The upper support column 2.23 and the lower support column 2.24 are fixedly connected to the correction plate 6 by bolts and abut against the end of the correction plate 6. By adjusting the bolt fit between the upper support column 2.23 and the lower support column 2.24, the levelness of the correction plate 6 on the furnace platform assembly 2.2 can be adjusted.

[0065] The correction plate 6 has a connecting part 6.4 at its end. A first flange surface 2.25 is fixedly provided on the periphery of the upper support column 2.23, abutting against the upper end face of the connecting part 6.4. A second flange surface 2.26 is provided on the periphery of the lower support column 2.24, abutting against the lower end face of the connecting part 6.4. A plurality of first adjusting bolt positions 9 are provided between the first flange surface 2.25 and the second flange surface 2.26. The first adjusting bolt positions 9 are spaced apart in the circumferential direction about the center of the support column. In this embodiment, the correction point 6.1 is set about the center of the correction plate 6. By setting the connecting part 6.4 at the end of the correction plate 6, the bolts on the first flange surface 2.25 and the second flange surface 2.26 can be adjusted, thereby adjusting the levelness of the correction plate 6 to ensure the reliability of the correction work of the clamping unit 4.1. In addition, the correction plate 6 is also held in position by the upper support column 2.23 and the lower support column 2.24, improving the stability of the correction plate 6 after the position adjustment.

[0066] like Figure 4 and Figure 5As shown, in one embodiment of adjusting the clamping unit 4.1, the clamping unit 4.1 includes a transmission arm 4.11 that is connected to the power end of the clamping assembly 4, and a clamping arm 4.12 for performing gripping and releasing actions. Specifically, the transmission arm 4.11 is hinged to a three-jaw chuck and the three-jaw chuck further drives the clamping arm 4.12. The clamping arm 4.12 is inserted into the bottom of the transmission arm 4.11, and there is a relatively mating inclined surface 4.13 between the clamping arm 4.12 and the transmission arm 4.11. The clamping arm 4.12 and the transmission arm 4.11 are fixedly connected by bolts, which pass through the inclined surface 4.13. Thus, after determining that the clamping unit 4.1 has an offset through the correction point 6.1, the relative position of the clamping arm 4.12 and the transmission arm 4.11 can be further adjusted by adjusting the tightness of the bolts between the clamping arm 4.12 and the transmission arm 4.11.

[0067] Preferably, the lower end of the transmission arm 4.11 is provided with a trapezoidal linkage block 4.2, and the upper end of the clamping arm 4.12 is provided with a linkage groove 4.3 that matches the linkage block 4.2. The inclined surface 4.13 is specifically formed on both sides of the linkage block 4.2. At least two second adjusting bolt positions 10 are provided at the upper end of the clamping arm 4.12. The second adjusting bolt positions 10 are arranged at intervals in the length direction of the clamping arm 4.12 and pass through the linkage groove 4.3 and the linkage block 4.2.

[0068] Furthermore, a T-shaped block is provided at the lower end of the linkage block 4.2, and a T-shaped groove matching the T-shaped block is provided at the bottom end of the linkage groove 4.3. Through the setting of the T-shaped block and the T-shaped groove, the pre-positioning of the transmission arm 4.11 and the clamping arm 4.12 is realized.

[0069] like Figure 15 As shown, as a further embodiment of the calibration block, a calibration center is provided at the center of the calibration contour, a reference post 14 is provided at the calibration center, and a plurality of distance sensors 15 are provided around the reference post 14 facing the calibration point 6.1. When calibrating the position of the clamping unit 4.1, the distance between the clamping unit 4.1 and the calibration point 6.1 is obtained through the distance sensors 15. Only some sensors are shown in the figure. In the implementation process, two clamping units 4.1 are adjusted to align with the calibration point 6.1, and another clamping unit 4.1 is further adjusted through the distance sensor 15, or the relative distance between the three clamping units 4.1 and the calibration center is adjusted by simultaneously adjusting all three clamping units 4.1.

[0070] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A crucible extraction device for a rare earth electrolysis furnace with positioning correction, characterized in that, include: The crucible extraction module (1) includes a base assembly (3) fixedly mounted on a base layer (7) and a clamping assembly (4) movably mounted on the base assembly (3). A three-axis moving assembly (5) is provided between the clamping assembly (4) and the base assembly (3). The clamping assembly (4) includes several clamping units (4.1), which move relative to each other to grab or release the crucible. An electrolytic furnace module (2) includes a fixed furnace body (2.1) and a furnace platform assembly (2.2) arranged around the furnace body (2.1). The furnace platform assembly (2.2) is provided with at least one correction plate (6). The correction plate (6) is provided with a plurality of correction points (6.1) corresponding to the clamping unit (4.1). The correction points (6.1) are arranged with respect to the gripping posture or opening posture of the clamping unit (4.1).

2. The crucible extraction device for a rare earth electrolytic furnace with positioning correction according to claim 1, characterized in that: The furnace platform assembly (2.2) is set on the base layer (7) and configured with the base assembly (3) at the same horizontal reference.

3. The crucible extraction device for a rare earth electrolytic furnace with positioning correction according to claim 1, characterized in that: The plurality of correction points (6.1) are arranged circumferentially, and the correction points (6.1) define a correction profile, the correction center of which corresponds to the clamping center of the clamping unit (4.1).

4. The crucible extraction device for a rare earth electrolytic furnace with positioning correction according to claim 1, characterized in that: The plurality of correction points (6.1) are configured as a first correction group (6.2) and a second correction group (6.3) arranged with the gripping or opening posture of the clamping unit (4.1), and the correction points (6.1) in the first correction group (6.2) and the second correction group (6.3) form a circumferentially arranged correction profile.

5. The crucible extraction device for a rare earth electrolytic furnace with positioning correction according to claim 1, characterized in that: The base assembly (3) includes a support base (3.1) connected to the three-axis moving assembly (5), a base plate (3.2) fixed on the base layer, and a positioning plate (3.3) fixed on the base plate (3.2). The positioning plate (3.3) is provided with at least one positioning post (3.31). The bottom of the support base (3.1) is provided with a positioning hole (3.11) that matches the positioning post (3.31). The positioning post (3.31) and the positioning hole (3.11) are set about the rotation center of the clamping assembly (4).

6. The crucible extraction device for a rare earth electrolytic furnace with positioning correction according to claim 5, characterized in that: The substrate (3.2) is embedded in the base layer (7) and is horizontal to the surface of the base layer (7). The base layer (7) is provided with a plurality of embedded parts (3.4). The embedded parts (3.4) pass through and extend out of the substrate (3.2). The positioning plate (3.3) is fixedly connected to the embedded parts (3.4).

7. The crucible extraction device for a rare earth electrolytic furnace with positioning correction according to claim 6, characterized in that: The embedded part (3.4) has a threaded portion (3.41) extending out of the base layer (7) and the positioning plate (3.3), and the end of the threaded portion (3.41) is provided with a nut (3.42). The bottom of the support base (3.1) is provided with a clearance hole (3.12) that matches the nut (3.42).

8. A crucible extraction device for a rare earth electrolytic furnace with positioning correction according to claim 1, characterized in that: The furnace platform assembly (2.2) includes a support platform (2.21) fixed on the horizontal plane of the base layer (7) and a conductive furnace platform (2.22) arranged above the support platform (2.21). An upper support column (2.23) is provided between the conductive furnace platform (2.22) and the support platform (2.21). A lower support column (2.24) is provided inside the support platform (2.21). The upper support column (2.23) and the lower support column (2.24) are fixedly connected by bolts and abut against the end of the correction plate (6).

9. A crucible extraction device for a rare earth electrolytic furnace with positioning correction according to claim 1, characterized in that: The clamping unit (4.1) includes a transmission arm (4.11) that is connected to the power end of the clamping assembly (4) and a clamping arm (4.12) for performing gripping and releasing actions. The clamping arm (4.12) is inserted into the bottom of the transmission arm (4.11), and there is a relatively mating inclined surface (4.13) between the clamping arm (4.12) and the transmission arm (4.11). The clamping arm (4.12) and the transmission arm (4.11) are fixedly connected by bolts, and the bolts are provided through the inclined surface (4.13).

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