A fuse link welding apparatus

Abstract

This invention relates to the field of welding equipment technology, specifically to a fuse welding device. The device includes a height adjustment device, a lifting component, and two movable rods. The height adjustment device is equipped with a lifting drive device connected to the lifting component. The lifting component has a guide component, and the two movable rods slide in cooperation with the guide component. A pressure sensor is located at the upper end of each movable rod, and a pressure regulator is correspondingly located above the pressure sensor. A spring is located between the pressure regulator and the pressure sensor. The pressure regulator adjusts the preload of the spring and the initial compression of the spring, setting the initial pressure. By adjusting the initial pressure of the spring, the contact pressure between the first and second welding heads and the fuse during welding is controlled, ensuring the contact pressure is within a specified range. This prevents problems such as incomplete welding or excessive penetration of the welding head, guaranteeing the final welding quality.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a fuse melt welding device. Background Technology

[0002] A fuse is an electrical device that breaks the circuit by melting its fusible element when the current exceeds a specified value. Fuses are widely used in high and low voltage power distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors, and are one of the most commonly used protective devices.

[0003] Figure 9 This is a schematic diagram of an existing fuse. During the production process, the fuse needs to be welded at welding point 20a to weld the fusible element to the outer casing.

[0004] When welding fuses, the existing welding equipment uses two welding heads to contact the fuse. One welding head contacts the metal casing of the fuse, and the other welding head contacts the welding point 20a on the fuse. When the two welding heads are energized, a current loop is formed. When the current passes between one of the welding heads and the welding point 20a, it generates high temperature, which melts the metal material at the welding point 20a and fuses the melt with the casing.

[0005] The contact pressure between the two welding heads and the fuse directly affects the final welding quality. If the contact pressure is too low, the welded area may not fuse sufficiently, resulting in insufficient weld strength (i.e., a cold weld). If the contact pressure is too high, the welding head may penetrate excessively (through the metal material of the welded area), which will also affect the strength and durability of the welded structure.

[0006] Existing welding equipment cannot flexibly adjust the contact pressure between the two welding heads and the fuse, which can easily lead to problems such as incomplete welding or excessive penetration of the welding head, resulting in welding defects. Summary of the Invention

[0007] The purpose of this invention is to provide a fuse welding device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a fuse welding device, comprising a height adjustment device, a lifting component, and two movable rods. The height adjustment device is equipped with a lifting drive device, which is connected to the lifting component. The lifting component is equipped with a guide component, and the two movable rods are respectively slidably engaged with the guide component. A pressure sensor is provided at the upper end of each movable rod, and a pressure regulator is correspondingly provided above the pressure sensor. A spring is provided between the pressure regulator and the pressure sensor. The preload of the spring is adjusted by the pressure regulator. The lower ends of the two movable rods are respectively connected to welding head connecting parts. The welding head connecting part at the lower end of one movable rod is connected to a first welding head, and the welding head connecting part at the lower end of the other movable rod is connected to a second welding head.

[0009] The guide component includes a bearing seat that is fixedly connected to the lifting component. The bearing seat is provided with a sliding bearing, and the movable rod passes through the sliding bearing.

[0010] The movable rod is connected to a limiting component, which is located above the guide component. The lifting drive device is either a pneumatic cylinder or an electric cylinder.

[0011] The welding head connecting component is provided with a circulating water channel. The two ends of the circulating water channel pass through the outside of the welding head connecting component and form a circulating water channel inlet and a circulating water channel outlet. Cooling water enters from the circulating water channel inlet and exits from the circulating water channel outlet.

[0012] The lower end of the movable rod is provided with a connecting block, and the welding head connecting component is connected to the connecting block by a connecting screw; the welding head connecting component is provided with an adjustment hole, and the connecting block is provided with a threaded hole corresponding to the adjustment hole. After the connecting screw passes through the adjustment hole on the welding head connecting component, it is connected to the threaded hole on the connecting block. Space is left in the adjustment hole for the screw to adjust its position.

[0013] The first welding head is made of tungsten alloy and has a sharp lower end; the second welding head is made of copper and has a flat lower end.

[0014] The welding head connecting component has a cavity for storing heat-conducting liquid. The cavity also contains a telescopic device for conveying cooling water, a pressure frame for controlling the telescopic device's extension and retraction, and a magnetic controller for driving the pressure frame. The circulating water channel is composed of the structure on the telescopic device, which absorbs heat by immersing itself in the heat-conducting liquid.

[0015] The circulating water channel is equipped with an inlet pipe, one end of which is connected to a multi-port pipe to further supply water to the expansion joint. The circulating water channel is equipped with a drain pipe, one end of which is connected to a multi-port pipe to collect the drainage in the expansion joint. The multi-port pipe is also equipped with a valve switch that is controlled by a pressure frame. After the expansion joint is stretched and extended, the valve switch opens to supply water to the expansion joint.

[0016] The expansion joint includes a stretchable spiral heat transfer tube, a positioning U-tube that is fixedly connected to one end of the spiral heat transfer tube and a multi-port water distribution pipe, a movable U-tube that is fixedly connected to the other end of the spiral heat transfer tube, and a stationary U-tube that is slidably inserted into one end by the movable U-tube, with one end of the stationary U-tube fixedly connected to the multi-port water outlet pipe.

[0017] A method for welding fuse elements includes the following steps: Step 1: Before welding, adjust the height of the lifting drive device using the height adjustment device, thereby adjusting the initial height of the lifting component. Adjust the initial pressure of the spring using the pressure regulator, and set the contact pressure between the first and second welding heads and the fuse during welding. Step 2: Place the fuse to be welded under the first welding head and the second welding head, with the first welding head aligned with the welding point on the fuse; Step 3: Drive the lifting component downwards using the lifting drive device, so that the first welding head and the second welding head move downwards simultaneously. The first welding head contacts the welding point on the fuse, and the second welding head contacts the outer casing on the fuse. Step 4: After power is applied, a high temperature is generated between the first welding head and the welding point, thereby melting the metal material at the welding point; after welding is completed, the lifting drive device drives the lifting component to move upward and reset.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. Adjust the initial compression of the spring using a pressure regulator to set the initial pressure of the spring. By adjusting the initial pressure of the spring, control the contact pressure between the first and second welding heads and the fuse during welding, so that the contact pressure is controlled within the specified range, avoiding problems such as incomplete welding or excessive penetration of the welding head, and ensuring the final welding quality.

[0019] 2. A fast-flowing circulating water channel is set in the welding head connection component. The resistance of internal water flow is reduced by stretching the spiral heat transfer tube, thereby reducing the energy consumption of cooling water delivery. Furthermore, by allowing the cooling water to stagnate in the spiral heat transfer tube, it is ensured that the cooling water can fully absorb heat, thereby improving the utilization of cooling water. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the location of the invention.

[0021] Figure 2 This is a schematic diagram of the external structure of the present invention.

[0022] Figure 3 This is a schematic diagram showing the location of the lifting components.

[0023] Figure 4 This is a schematic diagram showing the location of the lifting drive device.

[0024] Figure 5 This is a schematic diagram showing the position of the movable lever.

[0025] Figure 6 This is a schematic diagram of the outer casing structure.

[0026] Figure 7 This is a schematic diagram showing the position of the spring.

[0027] Figure 8 This is a schematic diagram of the welding head connection component.

[0028] Figure 9 This is a schematic diagram of the welding position for the fuse.

[0029] Figure 10 This is a schematic diagram of the internal structure of the welding head connection component.

[0030] Figure 11 This is a schematic diagram showing the location of the magnetron.

[0031] Figure 12 This is a schematic diagram of the expansion joint structure.

[0032] Figure 13 This is a schematic diagram of the amusement equipment structure.

[0033] Figure 14 This is a schematic diagram showing the position of the long prism.

[0034] Figure 15 This is a schematic diagram of the magnetron structure.

[0035] In the diagram: 1. Frame; 2. Outer casing; 3. Height adjustment device; 4. Pressure display screen; 5. Lifting component; 6. First welding head; 7. Second welding head; 8. Welding head connecting component; 8. Locking screw hole 8a; 8. Adjustment hole 8b; 8. Circulating water inlet 8c; 8. Circulating water outlet 8d; 9. Lifting drive device; 10. Pressure regulator; 11. Movable rod; 12. Connecting block; 13. Bearing seat; 14. Sliding bearing; 15. Limiting component; 16. Pressure sensor; 18. Spring; 20. Fuse; 20a. Welding point; 20a. Expansion joint. 81. Pressure frame 82. Magnet controller 83. Inlet pipe 84. Diversion multi-port pipe 85. Drain pipe 86. Outlet multi-port pipe 87. Valve switch 88. Spiral heat transfer tube 89. Positioning U-tube 891. Live U-tube 892. Stationary U-tube 893. Swivel 21. Long prism 22. Long rack 23. Tailstock 24. Traveling drum 25. Neck shaft 26. Swivel frame 27. Swivel gear 28. Waterproof box 29. Disc gear 30. Inner plate frame 31. Rack frame 32. Extender shaft 33. Electromagnet 34. Detailed Implementation

[0036] 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 technical solutions 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.

[0037] Please see Figures 1 to 15This invention provides a technical solution: a fuse welding device, comprising a frame 1 and a welding mechanism, wherein the welding mechanism is mounted on the frame 1, and the welding mechanism includes a height adjustment device 3, a lifting component 5 and two movable rods 11. The height adjustment device 3 is provided with a lifting drive device 9, which is connected to the lifting component 5. The lifting component 5 is provided with a guide component, and the two movable rods 11 are respectively slidably engaged with the guide component. A pressure sensor 16 is provided at the upper end of the movable rod 11, and a pressure regulator 10 is correspondingly provided above the pressure sensor 16. A spring 18 is provided between the pressure regulator 10 and the pressure sensor 16, and the preload of the spring 18 is adjusted and set by the pressure regulator 10. The lower ends of the two movable rods 11 are respectively connected to welding head connecting parts 8. A first welding head 6 is connected to the welding head connecting part 8 at the lower end of one movable rod 11, and a second welding head 7 is connected to the welding head connecting part 8 at the lower end of the other movable rod 11.

[0038] In this invention, the height adjustment device 3 is used to adjust the height of the lifting drive device 9, thereby adjusting the initial height of the lifting component 5. During welding, the fuse 20 to be welded is placed below the first welding head 6 and the second welding head 7, with the first welding head 6 aligned with the welding point 20a on the fuse 20. Then, the lifting drive device 9 drives the lifting component 5 downward, causing the first welding head 6 and the second welding head 7 to move downward simultaneously. The first welding head 6 contacts the welding point 20a on the fuse 20, and the second welding head 7 contacts the outer casing of the fuse 20. After energizing, a high temperature is formed between the first welding head 6 and the welding point 20a, thereby melting the metal material at the welding point 20a. After welding is completed, the lifting drive device 9 drives the lifting component 5 upward to reset. When the first welding head 6 and the second welding head 7 reach the welding position, the springs 18 at the upper ends of the two movable rods 11 are compressed. The pressure of the springs 18 on the movable rods 11 is the contact pressure between the welding head and the fuse 20. The pressure sensor 16 can detect the pressure of the springs 18 in real time, thereby realizing the detection of the contact pressure. When welding the fuse 20, the first welding head 6 and the second welding head 7 maintain stable contact with the fuse 20 via the spring 18. The pressure regulator 10 adjusts the initial compression of the spring 18, thereby adjusting its initial preload. Adjusting the preload of the spring 18 regulates the contact pressure between the first welding head 6 and the second welding head 7 and the fuse 20 during welding, ensuring the contact pressure is within a reasonable range and preventing issues such as incomplete welds or excessive penetration, thus guaranteeing the final weld quality. A guide component guides the movement of the movable rod 11 to ensure the stability of the movement of the first welding head 6 and the second welding head 7.

[0039] The pressure regulator 10 uses a threaded drive to adjust the compression of the spring 18. The pressure regulator 10 includes a fixed inner sleeve and a movable outer sleeve. The movable outer sleeve is fitted over the fixed inner sleeve, which is fixedly mounted on the lifting component 5. The movable outer sleeve and the fixed inner sleeve are threaded together. A push rod is provided on the movable outer sleeve. The lower end of the spring 18 contacts the pressure sensor 16, and the upper end of the spring 18 contacts the push rod. The push rod is moved by rotating the movable outer sleeve, and the initial compression of the spring 18 is changed by the movement of the push rod.

[0040] An outer cover 2 is provided on the outside of the height adjustment device 3. A pressure display screen 4 is provided on the outer cover 2. The pressure value detected by the pressure sensor 16 can be displayed in real time through the pressure display screen 4, so that the operator can know the contact pressure of the welding head during each welding.

[0041] The guide component includes a bearing that is fixedly connected to the lifting component 5. A sliding bearing 14 is provided on the bearing seat 13, and the movable rod 11 passes through the sliding bearing 14.

[0042] A limiting component 15 is connected to the movable rod 11, and the limiting component 15 is located above the guide component. When the first welding head 6 and the second welding head 7 are not in working state, that is, when the first welding head 6 and the second welding head 7 are not in contact with the fuse 20, the limiting component 15 on the movable rod 11 contacts the upper end of the guide component, thereby limiting the movable rod 11.

[0043] In this embodiment, the lifting drive device 9 is either a pneumatic cylinder or an electric cylinder.

[0044] Furthermore, the welding head connecting component 8 is provided with a circulating water channel. The two ends of the circulating water channel respectively penetrate the outer side of the welding head connecting component 8, forming a circulating water channel inlet 8c and a circulating water channel outlet. Cooling water enters from the circulating water channel inlet 8c and exits from the circulating water channel outlet. In traditional welding equipment, the temperature of the first welding head 6 and the second welding head 7 becomes very high during continuous welding operations, leading to a reduction in their service life and frequent replacement. In this invention, by providing a circulating water channel within the welding head connecting component 8, cooling water enters from the circulating water channel inlet 8c and exits from the circulating water channel outlet 8d. This cooling water cools the welding head connecting component 8, indirectly cooling the first welding head 6 and the second welding head 7, preventing them from overheating, increasing their service life, and reducing their replacement frequency.

[0045] The lower end of the movable rod 11 is provided with a connecting block 12, and the welding head connecting component 8 is connected to the connecting block 12 by a connecting screw; the welding head connecting component 8 is provided with an adjustment hole 8b, and the connecting block 12 is provided with a threaded hole corresponding to the adjustment hole 8b. The connecting screw passes through the adjustment hole 8b on the welding head connecting component 8 and is connected to the threaded hole on the connecting block 12.

[0046] Among them, the adjustment hole 8b is an elongated hole, which can be used to adjust the distance between the first welding head 6 and the second welding head 7. By adjusting the distance between the first welding head 6 and the second welding head 7, fuses of different sizes and specifications can be matched to meet the welding requirements of fuses of different sizes.

[0047] The welding head connecting component 8 is provided with a welding head clamping groove, and the first welding head 6 or the second welding head 7 is connected in the welding head clamping groove. The welding head connecting component 8 is also provided with a locking screw hole 8a, which is located at the welding head clamping groove. A locking screw is connected in the locking screw hole 8a, and the first welding head 6 or the second welding head 7 is clamped by tightening the locking screw.

[0048] In this embodiment, the first welding head 6 is made of tungsten alloy and has a sharp lower end; the second welding head 7 is made of copper and has a flat lower end.

[0049] The welding head connection component 8 has a cavity for storing heat-conducting liquid inside, and the cavity is also equipped with an expansion joint 81 for conveying cooling water flow, a pressure frame 82 for controlling the expansion and contraction of the expansion joint 81, and a magnetic controller 83 for driving the operation of the pressure frame 82. The circulating water channel is composed of the structure on the expansion joint 81. The expansion joint 81 absorbs heat from 8 by immersing in the heat-conducting liquid. The heat-conducting liquid in 8 can be heat-conducting oil in the prior art.

[0050] A water inlet pipe 84 is provided at the inlet 8c of the circulating water channel, and one end of the water inlet pipe 84 is connected to a multi-port pipe 85 to further supply water to the expansion joint 81. A drain pipe 86 is provided at the outlet 8d of the circulating water channel, and one end of the drain pipe 86 is connected to a multi-port pipe 87 to collect the drainage in the expansion joint 81. A valve switch 88 is also provided on the multi-port pipe 85, which is controlled by the pressure frame 82. After the expansion joint 81 is stretched and unfolded, the valve switch 88 is opened to supply water to the expansion joint 81.

[0051] The expansion joint 81 includes a stretchable spiral heat transfer tube 89, a positioning U-tube 891 that is fixedly connected between one end of the spiral heat transfer tube 89 and the water distribution multi-port pipe 85, a movable U-tube 892 that is fixedly connected to the other end of the spiral heat transfer tube 89, and a stationary U-tube 893 that is slidably inserted into the movable U-tube 892 at one end. One end of the stationary U-tube 893 is fixedly connected to the water outlet multi-port pipe 87. The spiral heat transfer tube 89 is an elastic expansion tube with sensitive heat conduction in the prior art.

[0052] Cooling principle in welding head connection component 8: Coolant is transported in spiral heat transfer tube 89. The coolant stays in spiral heat transfer tube 89 for a period of time to fully absorb external heat. The heat on welding head connection component 8 is transferred through heat transfer oil and then absorbed by spiral heat transfer tube 89. After heat absorption, coolant continues to be transported in spiral heat transfer tube 89. The liquid that has absorbed heat flows through the live U-tube 892, the stationary U-tube 893 and the outlet multi-port pipe 87, and then is discharged through the drain pipe 86. At the same time, new coolant is replenished into spiral heat transfer tube 89, that is, external coolant flows through... The coolant is supplied through the inlet pipe 84, and then through the multi-channel pipe 85 and the positioning U-pipe 891 to replenish the spiral heat transfer pipe 89, thus completing the replacement of the coolant. The spiral heat transfer pipe 89 adopts a spiral design to increase the heat transfer effect. When the coolant flows through the spiral heat transfer pipe 89, the spiral heat transfer pipe 89 is in a stretched state, which reduces the contact and impact between the coolant and the inner wall of the spiral heat transfer pipe 89 during the transport, thereby making the coolant transport faster and smoother. The transport of coolant requires external power supply, and the energy consumption of transport is reduced by reducing the transport resistance in the circulating water channel.

[0053] Further analysis of the previous section reveals that the source of control for the stretching of the spiral heat transfer tube 89 is the magnetic controller 83. The magnetic controller 83 includes a waterproof box 29, and a disc gear 30, an inner plate frame 31, a rack frame 32, a range extender shaft 33, and an electromagnet 34 disposed in the waterproof box 29. The waterproof box 29 is fixed inside the tube 8, forming an independent sealed space. When the electromagnet 34 in the waterproof box 29 is energized, it generates magnetic force, which attracts the metal disc fixed on the rack frame 32. The inner plate frame 31 fixed on the waterproof box 29 supports the rack frame 32. After the rack frame 32 is translated, it drives the gear fixed at one end of the range extender shaft 33 to rotate. The other end of the range extender shaft 33 is movably sleeved in the cylindrical groove provided on the waterproof box 29. The range extender shaft 33 drives the outer disc gear 30 to rotate, thereby driving the pressure frame 82.

[0054] The pressure frame 82 includes a traveler 21, a long prism 22, a long rack 23, and a tailstock 24. The traveler 21 moves by translation to pull the movable U-tube 892, which in turn pulls one end of the spiral heat transfer tube 89, causing the spiral heat transfer tube 89 to deform and elongate, making the curvature of the cold water delivery channel smoother. One end of the long prism 22 is a shaft, which is movably fitted into a waterproof through hole in the waterproof box 29. The end of the long prism 22 is connected to a fixed gear. The disc gear 30 meshes and drives the rotation of the disc gear 30, which in turn drives the long prism 22 to rotate. The travel device 21 includes a traveling drum 25, a neck shaft 26, a travel frame 27, and a travel gear 28. The other end of the long prism 22 slides through a prism hole opened at the center of the traveling drum 25. The long prism 22 drives the traveling drum 25 to rotate. The traveling drum 25 and the neck shaft 26 are respectively movably sleeved in two through holes opened on the travel frame 27. The outside of the traveling drum 25 is connected by a fixed... A fixed ring bevel gear drives a bevel gear fixed at one end of a journal shaft 26. The rotating journal shaft 26 drives a sliding gear 28 fixed at the other end to rotate. The sliding gear 28 meshes with a stationary long rack 23, causing the sliding gear 28 to translate. This translation, in turn, drives the sliding frame 27 to move via the journal shaft 26. One end of the long rack 23 is fixed to the tailstock 24, and the end of the tailstock 24 is fixed to the 8. The long rack 23 is also equipped with a T-shaped rail, which engages with a T-shaped groove on the sliding frame 27. This allows the sliding frame 27 to move in a directional direction. A fixed column on the sliding frame 27 hooks onto the movable U-tube 892. The moving sliding frame 27 smoothly pulls the movable U-tube 892, thereby stretching the spiral heat transfer tube 89. After the spiral heat transfer tube 89 is fully stretched, the moving sliding frame 27 presses against the valve switch 88, thereby unblocking the water distribution multi-way pipe 85 controlled by the valve switch 88. The valve switch 88 is a prior art valve.

[0055] The above-mentioned fuse element welding method includes the following steps: Step 1: Before welding, adjust the height of the lifting drive device 9 by adjusting the height adjustment device 3, thereby adjusting the initial height of the lifting component 5. Adjust the initial pressure of the spring 18 by adjusting the pressure regulator 10, and set the contact pressure between the first welding head 6 and the second welding head 7 and the fuse 20 during welding. Step 2: Place the fuse 20 to be welded below the first welding head 6 and the second welding head 7, wherein the first welding head 6 is aligned with the welding point 20a on the fuse 20; Step 3: Drive the lifting component 5 downward by the lifting drive device 9, so that the first welding head 6 and the second welding head 7 move downward at the same time. The first welding head 6 contacts the welding point 20a on the fuse 20, and the second welding head 7 contacts the outer shell on the fuse 20. Step 4: After power is applied, a high temperature is formed between the first welding head 6 and the welding point 20a, thereby melting the metal material at the welding point 20a; after welding is completed, the lifting drive device 9 drives the lifting component 5 to move upward and reset.

[0056] 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 fuse fusible link welding device, characterized in that: The device includes a height adjustment device, a lifting component, and two movable rods. The height adjustment device is equipped with a lifting drive device, which is connected to the lifting component. The lifting component is equipped with a guide component, and the two movable rods are slidably engaged with the guide component. A pressure sensor is provided at the upper end of each movable rod, and a pressure regulator is correspondingly provided above the pressure sensor. A spring is provided between the pressure regulator and the pressure sensor. The preload of the spring is adjusted by the pressure regulator. The lower ends of the two movable rods are respectively connected to welding head connecting parts. The welding head connecting part at the lower end of one movable rod is connected to a first welding head, and the welding head connecting part at the lower end of the other movable rod is connected to a second welding head. The welding head connecting component is provided with a circulating water channel. The two ends of the circulating water channel pass through the outside of the welding head connecting component and form a circulating water channel inlet and a circulating water channel outlet. Cooling water enters from the circulating water channel inlet and exits from the circulating water channel outlet. The welding head connecting component has a cavity for storing heat-conducting liquid, and the cavity is also equipped with a telescopic device for conveying cooling water flow, a pressure frame for controlling the telescopic device's extension and retraction, and a magnetic controller for driving the pressure frame. The circulating water channel is composed of the structure on the telescopic device, which absorbs heat by immersing itself in the heat-conducting liquid. The circulating water channel is equipped with an inlet pipe, one end of which is connected to a multi-port pipe to further supply water to the expansion joint. The circulating water channel is equipped with a drain pipe, one end of which is connected to a multi-port pipe to collect the drainage in the expansion joint. The multi-port pipe is also equipped with a valve switch that is controlled by a pressure frame. When the expansion joint is stretched and extended, the valve switch opens to supply water to the expansion joint. The expansion joint includes a stretchable spiral heat transfer tube, a positioning U-tube that is fixedly connected to one end of the spiral heat transfer tube and a multi-port water distribution pipe, a movable U-tube that is fixedly connected to the other end of the spiral heat transfer tube, and a stationary U-tube that is slidably inserted into one end by the movable U-tube, with one end of the stationary U-tube fixedly connected to the multi-port water outlet pipe.

2. The fuse welding equipment according to claim 1, characterized in that: The guide component includes a bearing seat that is fixedly connected to the lifting component. The bearing seat is provided with a sliding bearing, and the movable rod passes through the sliding bearing.

3. The fuse welding equipment according to claim 1, characterized in that: The movable rod is connected to a limiting component, which is located above the guide component. The lifting drive device is either a pneumatic cylinder or an electric cylinder.

4. The fuse welding equipment according to claim 1, characterized in that: The lower end of the movable rod is provided with a connecting block, and the welding head connecting component is connected to the connecting block by a connecting screw; the welding head connecting component is provided with an adjustment hole, and the connecting block is provided with a threaded hole corresponding to the adjustment hole. After the connecting screw passes through the adjustment hole on the welding head connecting component, it is connected to the threaded hole on the connecting block. Space is left in the adjustment hole for the screw to adjust its position.

5. The fuse welding equipment according to claim 1, characterized in that: The first welding head is made of tungsten alloy and has a sharp lower end; the second welding head is made of copper and has a flat lower end.

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