Tool for feeding pipe nozzle welding machine tool

Abstract

The tool for the feeding pipe nozzle welding machine tool comprises a cover body arranged on an electrolytic bath to be welded, reinforcing rods supported and fixed by an external rack are arranged above the cover body, the opposite ends of the two reinforcing rods are fixedly connected with sleeves, a first shaft is arranged on the inner wall of each sleeve, and a second shaft is arranged on the inner wall of each sleeve. The top of the first shaft is fixedly connected with a heat insulation base plate in a rotating mode, the first shaft is sleeved with a compression spring, the two ends of the compression spring are movably connected with the opposite faces of the heat insulation base plate and the sleeve, an inner spiral groove is formed in the inner wall of the sleeve, and the surface of the first shaft is fixedly connected with a sliding block matched with the inner spiral groove. The bottom of the first shaft penetrates through the cover body and is fixedly connected with an n-shaped frame. According to the welding device, through cooperative use of the structures, the problem that in the actual use process, due to the fact that welding of the feeding pipe nozzle of the electrolytic bath is conducted through manual operation at present, special tools are few is solved. The labor intensity of workers is high, and the working efficiency is difficult to improve.

Description

Technical Field

[0001] This invention relates to the field of chemical electrolytic cell processing technology, specifically to a tooling for a feed nozzle welding machine. Background Technology

[0002] When welding the feed nozzle of an electrolytic cell, it is necessary to locate and inspect the weld joint to check for defects such as incomplete penetration or severe oxidation. These defects can cause significant economic losses to the user and may even lead to major disasters such as leaks of harmful gases due to incomplete welding of the feed nozzle. Therefore, welding inspection of the electrolytic cell feed nozzle is extremely important.

[0003] Currently, the welding of feed nozzles for electrolytic cells is done manually, with few specialized tooling options available. This results in high labor intensity for workers and limited efficiency. Therefore, we propose a tooling solution for a feed nozzle welding machine. Summary of the Invention

[0004] The purpose of this invention is to provide a tooling for a feed nozzle welding machine, which has the advantages of multiple welding and all-round isolation protection, and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tooling for a feed nozzle welding machine tool, comprising a cover set on an electrolytic cell to be welded, a reinforcing rod provided above the cover by an external frame, a sleeve fixedly connected to the opposite ends of the two reinforcing rods, a shaft provided on the inner wall of the sleeve, and a heat insulation pad rotatably connected to the top of the shaft.

[0006] A compression spring is fitted on the shaft, and the two ends of the compression spring are movably connected to the opposite surfaces of the heat insulation pad and the sleeve. An inner spiral groove is formed on the inner wall of the sleeve. A slider that mates with the inner spiral groove is fixedly connected to the surface of the shaft. The bottom of the shaft penetrates the cover and is fixedly connected to an n-shaped frame. A through groove is formed on the arc-shaped contour of the cover, and a movable plate is slidably connected through the through groove. An inclined push plate is fixedly connected to the bottom of the n-shaped frame. The inclined push plate penetrates the movable plate and is slidably connected to the movable plate. A welding gun head for high-temperature welding of the feed nozzle and the feed pipe base is fixedly connected to the opposite ends of the two movable plates.

[0007] Preferably, the lower surface of the n-shaped frame is rotatably connected to an auxiliary welding device for welding the inner wall of the feed nozzle. The auxiliary welding device includes a second shaft rotatably connected to the lower surface of the n-shaped frame, a gear bushing sleeve on the surface of the second shaft, and side plates fixedly connected to the upper surfaces of the two movable plates. The surfaces of the two side plates are respectively fixedly connected to a first gear plate and a second gear plate that mesh with the gear bushing sleeve for transmission.

[0008] Preferably, the auxiliary welding equipment further includes a connecting horizontal plate fixed to the surface of the second shaft. A shape memory alloy rod is fixedly connected to the lower surface of the connecting horizontal plate. A welding gun head two is fixedly connected to the side of the second shaft. A pressure-sensitive switch electrically connected to the welding gun head two is fixedly connected to the upper surface of the welding gun head two. The pressure-sensitive switch is located directly below the shape memory alloy rod.

[0009] Preferably, the movable plate is provided with a protective device for transferring heat from the feed nozzle and replenishing the protective gas inside the hood. The protective device includes an exhaust pipe, the top of which penetrates the upper surface of the hood and extends into the hood. A piston cylinder is provided on the side of the electrolytic cell to be welded, with the opening of the piston cylinder facing the hood. A piston plate is slidably connected to the inner wall of the piston cylinder. One end of the piston plate facing the hood is fixedly connected to the movable plate. A one-way valve is fixedly connected to the inner wall of the exhaust pipe near the bottom. A through hole is provided on the piston cylinder at the end away from the hood, and an air inlet pipe connected to an external air source is fixedly connected through the through hole. A two-way valve is fixedly connected to the inner wall of the air inlet pipe.

[0010] Preferably, the number of welding gun heads on the second shaft is not less than eight, and they are arranged vertically on the second shaft.

[0011] Preferably, the movable plate is a rectangular plate, and the cover is provided with a rectangular through groove adapted to the movable plate.

[0012] Preferably, the cover is made of transparent glass and the surface is treated with a rounded transition.

[0013] Preferably, the end of the slider away from the shaft is an arc-shaped surface, and the slider is slidably connected to the inner wall of the inner spiral groove through the arc-shaped surface.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention achieves overall support and fixation of the device through an external frame; Before use, place the feed nozzle and feed tube base on the feed inlet of the electrolytic cell to be welded, so that the surface of the feed nozzle near the bottom is inserted into the feed inlet. The feed nozzle and feed tube base are placed on the electrolytic cell to be welded through the lower surface of the feed tube base. After the feed nozzle and feed tube base are placed in preparation for welding, place the cover on the electrolytic cell to be welded and cover the feed nozzle and feed tube base inside.

[0015] The welding torch head is ignited to generate a high-temperature jet flame that heats the feed nozzle and feed tube base.

[0016] At the same time, manually press down on the heat insulation pad, causing the shaft to move down synchronously with the slider on it. Guided by the trajectory on the inner spiral groove, the slider moves down while also rotating the shaft relative to the heat insulation pad along the trajectory of the inner spiral groove.

[0017] This allows for the continuous rotation of the n-shaped frame, inclined push plate, movable plate, cover, and welding gun head one, enabling the two welding gun heads one to perform a circumferential welding operation on the feed tube base and feed tube nozzle, avoiding localized heating. Ultimately, through heating, the parts of the feed tube nozzle and feed tube base that come into contact with the electrolytic cell to be welded reach a molten or plastic state, and welding can be achieved after cooling.

[0018] By setting up auxiliary welding equipment, it is possible to achieve a dual welding effect on the feed nozzle and the feed tube base.

[0019] The protective device can transfer heat from the feed nozzle and replenish the protective gas inside the cover.

[0020] By using the above-mentioned structures in combination, the problem of high labor intensity and low work efficiency in actual use is solved, as the welding of the feed nozzles of electrolytic cells is currently done manually with little specialized tooling. Attached Figure Description

[0021] Figure 1 This is a perspective view of the structure of the present invention; Figure 2 This is a perspective view of the sleeve of the present invention; Figure 3 This is a left sectional view of the sleeve of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 This is a perspective view of the n-shaped frame of the present invention; Figure 6 For the present invention Figure 8 Enlarged view of the structure at point B; Figure 7 This is a front sectional view of the piston cylinder of the present invention; Figure 8 This is a front sectional view of the feed nozzle of the present invention.

[0022] In the diagram: 1. Electrolytic cell to be welded; 2. Cover; 3. Reinforcing rod; 4. Sleeve; 5. Shaft 1; 6. Heat insulation pad; 7. Compression spring; 8. Inner spiral groove; 9. Slider; 10. N-shaped frame; 11. Movable plate; 12. Inclined push plate; 13. Welding gun head 1; 14. Feed nozzle; 15. Feed pipe base; 16. Shaft 2; 17. Gear bushing; 18. Side plate; 19. Gear plate 1; 20. Gear plate 2; 21. Connecting cross plate; 22. Memory alloy rod; 23. Welding gun head 2; 24. Pressure-sensitive switch; 25. Exhaust pipe; 26. Piston cylinder; 27. Piston plate; 28. One-way valve 1; 29. ​​Inlet pipe; 30. One-way valve 2. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1

[0025] The present invention provides a technical solution: a tooling for a feed nozzle welding machine tool, including a cover 2 set on an electrolytic cell 1 to be welded, a reinforcing rod 3 supported and fixed by an external frame above the cover 2, the external frame is used to support and fix the entire device, mainly the external frame is used to support and fix the reinforcing rod 3, the opposite ends of the two reinforcing rods 3 are fixedly connected to a sleeve 4, the inner wall of the sleeve 4 is provided with a shaft 5, the top of the shaft 5 is fixedly and rotatably connected to a heat insulation pad 6; A compression spring 7 is fitted onto shaft 5. The two ends of the compression spring 7 are movably connected to the opposing surfaces of the heat insulation pad 6 and the sleeve 4. An inner spiral groove 8 is formed on the inner wall of the sleeve 4. When the heat insulation pad 6 is manually pressed downwards, shaft 5 moves downwards synchronously with the slider 9 on it. Guided by the trajectory on the inner spiral groove 8, the slider 9 moves downwards and, along the trajectory of the inner spiral groove 8, rotates shaft 5 relative to the heat insulation pad 6. A slider 9, which mates with the inner spiral groove 8, is fixedly connected to the surface of shaft 5. An n-shaped frame 10 is fixedly connected to the bottom of shaft 5, penetrating the cover 2. A through groove is provided on the arc-shaped contour of the cover 2, through which a movable plate 11 is slidably connected. An inclined push plate 12 is fixedly connected to the bottom of the n-shaped frame 10, penetrating the movable plate 11 and slidably connected to it. Welding gun heads 13, used for high-temperature welding of the feed nozzle 14 and feed tube base 15, are fixedly connected to the opposite ends of the two movable plates 11. Ignition of the welding gun head 13 generates a high-temperature jet flame to heat the feed nozzle 14 and feed tube base 15.

[0026] Before use, place the feed nozzle 14 and feed tube base 15 on the feed inlet of the electrolytic cell 1 to be welded, so that the surface of the feed nozzle 14 near the bottom is inserted into the feed inlet, and the feed nozzle 14 and feed tube base 15 are placed on the electrolytic cell 1 to be welded by the lower surface of the feed tube base 15. The feed nozzle 14 and feed tube base 15 are placed on the electrolytic cell 1 to be welded after the welding preparation is completed.

[0027] Place the cover 2 on the electrolytic cell 1 to be welded and cover the feed nozzle 14 and feed tube base 15 inside it.

[0028] This allows for the continuous rotation of the n-shaped frame 10, the inclined push plate 12, the movable plate 11, the cover 2, and the welding gun head 13, enabling the two welding gun heads 13 to perform a circumferential welding operation on the feed tube base 15 and the feed tube nozzle 14, avoiding localized heating. Ultimately, through heating, the parts of the feed tube nozzle 14 and the feed tube base 15 that come into contact with the electrolytic cell 1 to be welded reach a molten state or a plastic state, and welding can be achieved after cooling.

[0029] Furthermore, the lower surface of the n-shaped frame 10 is rotatably connected to an auxiliary welding device for welding the inner wall of the feed nozzle 14. By setting up the auxiliary welding device, a dual welding effect can be achieved for the feed nozzle 14 and the feed tube base 15.

[0030] The auxiliary welding equipment includes a shaft 16 that is rotatably connected to the lower surface of the n-shaped frame 10. A gear bushing 17 is fitted on the surface of the shaft 16. Side plates 18 are fixedly connected to the upper surfaces of the two movable plates 11. A toothed plate 19 and a toothed plate 20 that mesh with the gear bushing 17 are fixedly connected to the surfaces of the two side plates 18, respectively.

[0031] When using, refer to Figure 5 After the movable plate 11 passes through the cover 2, its movement trajectory on the cover 2 is restricted. Since the inclined push plate 12 is placed at an inclined angle and the inclined push plate 12 passes through the movable plate 11 and is slidably connected to the movable plate 11, when the n-shaped frame 10 moves down with the two inclined push plates 12, the two movable plates 11 will be guided to move towards each other. This makes the distance between the welding gun head 13 and the feed nozzle 14 and the feed tube base 15 closer, and the heating effect is better. At the same time, the side plates 18 on the two movable plates 11 move towards each other synchronously, so that the toothed plate 19 and the toothed plate 20 can drive the meshed gear bushing 17 to rotate, so that the gear bushing 17, along with the shaft 2 16, rotates on the n-shaped frame 10. As the n-shaped frame 10 descends, the shaft 2 16, along with the gear bushing 17, will descend and extend into the feed nozzle 14.

[0032] Furthermore, the auxiliary welding equipment also includes a connecting plate 21 fixed on the surface of shaft 2 16. A shape memory alloy rod 22 is fixedly connected to the lower surface of the connecting plate 21. The shape memory alloy rod 22 is an iron-nickel alloy. A welding torch head 23 is fixedly connected to the side of shaft 2 16. A pressure-sensitive switch 24 electrically connected to the welding torch head 23 is fixedly connected to the upper surface of the welding torch head 23. The pressure-sensitive switch 24 is located directly below the shape memory alloy rod 22.

[0033] refer to Figure 6 and Figure 8 .

[0034] As the shaft 16 moves downward and rotates, the connecting plate 21, shape memory alloy rod 22, welding torch head 23, and pressure-sensitive switch 24 on it rotate synchronously. At room temperature, there is a gap between the shape memory alloy rod 22 and the pressure-sensitive switch 24, and they will not make contact. However, once the shape memory alloy rod 22 becomes longer due to temperature, it will make contact and squeeze with the upper surface of the pressure-sensitive switch 24, causing the welding torch head 23 to be powered on and start flame jetting to heat the inner wall of the feed nozzle 14.

[0035] During use, the area heated by welding torch head 13 is the contact point between the feed nozzle 14, the feed tube base 15, and the electrolytic cell 1 to be welded. When the welding torch head 23 is positioned inside the feed nozzle 14 directly opposite the heating point, the shape memory alloy rod 22 extends, and the welding torch head 23 heats the contact area between the feed nozzle 14, the feed tube base 15, and the electrolytic cell 1 from within. This dual heating improves welding efficiency. The rotation of shaft 26 is relative to the n-shaped frame 10, and the n-shaped frame 10 itself also rotates relative to the feed nozzle 14, resulting in a higher rotational speed of shaft 26 relative to the feed nozzle 14 and more even heating. Furthermore, as it descends, the shape memory alloy rod 22, which is away from the high-temperature zone, contracts due to cooling, thus disengaging from the pressure-sensitive switch 24, thereby enabling precise opening and heating of welding torch head 23.

[0036] Furthermore, the movable plate 11 is equipped with a protection device for transferring heat from the feed nozzle 14 and replenishing the protective gas in the cover 2. Through the setting of the protection device, the heat from the feed nozzle 14 and the protective gas in the cover 2 can be transferred.

[0037] The protective device includes an exhaust pipe 25, the top of which penetrates the upper surface of the cover 2 and extends into the cover 2. A piston cylinder 26 is provided on the side of the electrolytic cell 1 to be welded, with the opening of the piston cylinder 26 facing the cover 2. A piston plate 27 is slidably connected to the inner wall of the piston cylinder 26. One end of the piston plate 27 facing the cover 2 is fixedly connected to the movable plate 11. A one-way valve 28 is fixedly connected to the inner wall of the exhaust pipe 25 near the bottom. A through hole is opened on the piston cylinder 26 away from the cover 2, and an air inlet pipe 29 connected to an external air source is fixedly connected through the through hole. A one-way valve 30 is fixedly connected to the inner wall of the air inlet pipe 29.

[0038] When using, refer to Figure 1 and Figure 7 .

[0039] The reciprocating movement of the movable plate 11 can drive the piston plate 27 to reciprocate within the piston cylinder 26, and the exhaust pipe 25 can support and fix the piston cylinder 26.

[0040] When the piston plate 27 moves away from the cover 2 within the piston cylinder 26, the space inside the piston cylinder 26 decreases, and the gas pressure increases. The high-pressure gas is transferred to the cover 2 through the one-way valve 28 and the exhaust pipe 25, allowing the protective gas to be replenished within the cover 2. Simultaneously, as the protective gas within the cover 2 continuously increases, it continues to flow downwards through the space within the feed nozzle 14. This gas transfer effectively removes heat from the feed nozzle 14, preventing the welding torch head 23, located at a higher position, from being affected and activating the flame. This achieves precise heating operation.

[0041] When the piston plate 27 inside the piston cylinder 26 moves towards the cover 2, the space inside the piston cylinder 26 increases and the air pressure decreases. This allows the air inlet pipe 29, which is connected to an external air source, to transfer protective gas from the external air source into the piston cylinder 26 through the one-way valve 30, thus replenishing the gas inside the piston cylinder 26. This repetitive cycle ensures the continuous replenishment of protective gas inside the cover 2, achieving downward heat transfer.

[0042] Furthermore, the number of welding gun heads 23 on shaft 2 16 is no less than eight, and they are arranged vertically on shaft 2 16.

[0043] refer to Figure 8 By setting the number of welding gun heads 23 to no less than 8, the accuracy of welding heating of the inner wall of the feed nozzle 14 by the welding gun heads 23 can be improved.

[0044] Furthermore, the movable plate 11 is a rectangular plate, and the cover 2 is provided with a rectangular through groove that is compatible with the movable plate 11.

[0045] refer to Figure 1 , Figure 2 and Figure 5 By setting the movable plate 11 to be a rectangular plate, the sliding of the movable plate 11 on the cover 2 will be more stable, ensuring the overall stability of the device during use.

[0046] The further cover 2 is made of transparent glass material, and the surface is treated with a rounded transition.

[0047] The cover 2 is made of transparent glass, making it easy to observe the internal welding process, while the rounded transition provides protection for the user.

[0048] Example 2

[0049] Similar to Embodiment 1, but further: the end of the slider 9 away from the shaft 5 is an arc-shaped surface, and the slider 9 is slidably connected to the inner wall of the inner spiral groove 8 through the arc-shaped surface.

[0050] By designing the arc-shaped surface on the slider 9, the slider 9 slides more smoothly within the inner spiral groove 8, making it less prone to jamming and further improving the overall stability of the device during use.

[0051] Working principle: When using this feed nozzle welding machine tool fixture, the entire device is supported and fixed by an external frame; Before use, place the feed nozzle 14 and feed tube base 15 on the feed inlet of the electrolytic cell 1 to be welded, so that the surface of the feed nozzle 14 near the bottom is inserted into the feed inlet, and the feed nozzle 14 and feed tube base 15 are placed on the electrolytic cell 1 to be welded by the lower surface of the feed tube base 15. After the feed nozzle 14 and feed tube base 15 have completed the placement preparation before welding, the cover 2 is then placed on the electrolytic cell 1 to be welded and the feed nozzle 14 and feed tube base 15 are covered in it.

[0052] The welding torch head 13 is ignited to generate a high-temperature jet flame that heats the feed nozzle 14 and the feed tube base 15.

[0053] At the same time, manually press down on the heat insulation pad 6, causing the shaft 5 to move down synchronously with the slider 9 on it. Guided by the trajectory on the inner spiral groove 8, the slider 9 moves down and, along the trajectory of the inner spiral groove 8, causes the shaft 5 to rotate relative to the heat insulation pad 6.

[0054] This allows for the continuous rotation of the n-shaped frame 10, the inclined push plate 12, the movable plate 11, the cover 2, and the welding gun head 13, enabling the two welding gun heads 13 to perform a circumferential welding operation on the feed tube base 15 and the feed tube nozzle 14, avoiding localized heating. Ultimately, through heating, the parts of the feed tube nozzle 14 and the feed tube base 15 that come into contact with the electrolytic cell 1 to be welded reach a molten state or a plastic state, and welding can be achieved after cooling.

[0055] By setting up auxiliary welding equipment, a dual welding effect can be achieved on the feed nozzle 14 and the feed tube base 15.

[0056] When using, refer to Figure 5 After the movable plate 11 passes through the cover 2, its movement trajectory on the cover 2 is restricted. Since the inclined push plate 12 is placed at an inclined angle and the inclined push plate 12 passes through the movable plate 11 and is slidably connected to the movable plate 11, when the n-shaped frame 10 moves down with the two inclined push plates 12, the two movable plates 11 will be guided to move towards each other. This makes the distance between the welding gun head 13 and the feed nozzle 14 and the feed tube base 15 closer, and the heating effect is better. Simultaneously, the side plates 18 on the two movable plates 11 move towards each other, allowing the gear plate 19 and gear plate 20 to drive the meshed gear sleeve 17 to rotate. This causes the gear sleeve 17, along with shaft 2 16, to rotate on the n-shaped frame 10. As the n-shaped frame 10 descends, shaft 2 16, along with the gear sleeve 17, descends and extends into the feed nozzle 14. (Reference) Figure 6 and Figure 8 .

[0057] As the shaft 16 moves downward and rotates, the connecting plate 21, shape memory alloy rod 22, welding torch head 23, and pressure-sensitive switch 24 on it rotate synchronously. At room temperature, there is a gap between the shape memory alloy rod 22 and the pressure-sensitive switch 24, and they will not make contact. However, once the shape memory alloy rod 22 becomes longer due to temperature, it will make contact and squeeze with the upper surface of the pressure-sensitive switch 24, causing the welding torch head 23 to be powered on and start flame jetting to heat the inner wall of the feed nozzle 14.

[0058] During use, the area heated by welding torch head 13 is the contact point between the feed nozzle 14, the feed tube base 15, and the electrolytic cell 1 to be welded. When the welding torch head 23 is positioned inside the feed nozzle 14 directly opposite the heating point, the shape memory alloy rod 22 extends, and the welding torch head 23 heats the contact area between the feed nozzle 14, the feed tube base 15, and the electrolytic cell 1 from within. This dual heating improves welding efficiency. The rotation of shaft 26 is relative to the n-shaped frame 10, and the n-shaped frame 10 itself also rotates relative to the feed nozzle 14, resulting in a higher rotational speed of shaft 26 relative to the feed nozzle 14 and more even heating. Furthermore, as it descends, the shape memory alloy rod 22, which is away from the high-temperature zone, contracts due to cooling, thus disengaging from the pressure-sensitive switch 24, thereby enabling precise opening and heating of welding torch head 23.

[0059] By setting up a protective device, heat can be transferred from the feed nozzle 14 and protective gas can be replenished in the cover 2.

[0060] When using, refer to Figure 1 and Figure 7 .

[0061] The reciprocating movement of the movable plate 11 can drive the piston plate 27 to reciprocate within the piston cylinder 26, and the exhaust pipe 25 can support and fix the piston cylinder 26.

[0062] When the piston plate 27 moves away from the cover 2 within the piston cylinder 26, the space inside the piston cylinder 26 decreases, and the gas pressure increases. The high-pressure gas is transferred to the cover 2 through the one-way valve 28 and the exhaust pipe 25, allowing the protective gas to be replenished within the cover 2. Simultaneously, as the protective gas within the cover 2 continuously increases, it continues to flow downwards through the space within the feed nozzle 14. This gas transfer effectively removes heat from the feed nozzle 14, preventing the welding torch head 23, located at a higher position, from being affected and activating the flame. This achieves precise heating operation.

[0063] When the piston plate 27 inside the piston cylinder 26 moves towards the cover 2, the space inside the piston cylinder 26 increases and the air pressure decreases. This allows the air inlet pipe 29, which is connected to an external air source, to transfer protective gas from the external air source into the piston cylinder 26 through the one-way valve 30, thus replenishing the gas inside the piston cylinder 26. This repetitive cycle ensures the continuous replenishment of protective gas inside the cover 2, achieving downward heat transfer.

[0064] By combining the above structures, the problem of high labor intensity and low work efficiency in actual use is solved, as the welding of electrolytic cell feed nozzles is currently done manually with little specialized tooling. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for a feed nozzle welding machine, characterized in that: Includes a cover (2) set on the electrolytic cell (1) to be welded, and a reinforcing rod (3) supported and fixed by an external frame is provided above the cover (2). A sleeve (4) is fixedly connected to the opposite ends of the two reinforcing rods (3). A shaft (5) is provided on the inner wall of the sleeve (4). A heat insulation pad (6) is rotatably connected to the top of the shaft (5). A compression spring (7) is fitted on the shaft (5). The two ends of the compression spring (7) are movably connected to the opposite surfaces of the heat insulation pad (6) and the sleeve (4). An inner spiral groove (8) is opened on the inner wall of the sleeve (4). A slider (9) that cooperates with the inner spiral groove (8) is fixedly connected to the surface of the shaft (5). An n-shaped frame (10) is fixedly connected to the bottom of the shaft (5) through the cover (2). A through groove is opened on the arc contour of the cover (2) and a movable plate (11) is slidably connected through the through groove. An inclined push plate (12) is fixedly connected to the bottom of the n-shaped frame (10). The inclined push plate (12) passes through the movable plate (11) and is slidably connected to the movable plate (11). A welding gun head (13) for high-temperature welding of the feed nozzle (14) and the feed tube base (15) is fixedly connected to the opposite ends of the two movable plates (11).

2. The tooling for a feed nozzle welding machine according to claim 1, characterized in that: The lower surface of the n-shaped frame (10) is rotatably connected to an auxiliary welding device for welding the inner wall of the feed nozzle (14). The auxiliary welding device includes a shaft two (16) rotatably connected to the lower surface of the n-shaped frame (10). A gear bushing (17) is fitted on the surface of the shaft two (16). Side plates (18) are fixedly connected to the upper surfaces of the two movable plates (11). A toothed plate one (19) and a toothed plate two (20) that mesh with the gear bushing (17) are fixedly connected to the surfaces of the two side plates (18).

3. The tooling for a feed nozzle welding machine according to claim 2, characterized in that: The auxiliary welding equipment also includes a connecting horizontal plate (21) fixed on the surface of shaft two (16). A shape memory alloy rod (22) is fixedly connected to the lower surface of the connecting horizontal plate (21). A welding gun head two (23) is fixedly connected to the side of shaft two (16). A pressure-sensitive switch (24) electrically connected to the welding gun head two (23) is fixedly connected to the upper surface of the welding gun head two (23). The pressure-sensitive switch (24) is located directly below the shape memory alloy rod (22).

4. The tooling for a feed nozzle welding machine according to claim 1, characterized in that: The movable plate (11) is provided with a protective device for transferring heat in the feed nozzle (14) and replenishing the protective gas in the cover (2). The protective device includes an exhaust pipe (25). The top of the exhaust pipe (25) penetrates the upper surface of the cover (2) and extends into the cover (2). A piston cylinder (26) is provided on the side of the electrolytic cell (1) to be welded. The opening on the piston cylinder (26) faces the cover (2). A piston plate (27) is slidably connected to the inner wall of the piston cylinder (26). One end of the piston plate (27) facing the cover (2) is fixedly connected to the movable plate (11). A one-way valve (28) is fixedly connected to the inner wall of the exhaust pipe (25) near the bottom. A through hole is opened on the piston cylinder (26) away from the cover (2), and an air inlet pipe (29) connected to an external air source is fixedly connected through the through hole. A one-way valve (30) is fixedly connected to the inner wall of the air inlet pipe (29).

5. The tooling for a feed nozzle welding machine according to claim 2, characterized in that: The number of welding gun heads (23) on the shaft (16) is no less than eight, and they are arranged vertically on the shaft (16).

6. The tooling for a feed nozzle welding machine according to claim 1, characterized in that: The movable plate (11) is a rectangular plate, and the cover (2) is provided with a rectangular through groove that is compatible with the movable plate (11).

7. The tooling for a feed nozzle welding machine according to claim 1, characterized in that: The cover (2) is made of transparent glass and the surface is treated with a rounded transition.

8. The tooling for a feed nozzle welding machine according to claim 1, characterized in that: The end of the slider (9) away from the shaft (5) is an arc-shaped surface, and the slider (9) is slidably connected to the inner wall of the inner spiral groove (8) through the arc-shaped surface.

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