A conductor joint welding device for cable production

Abstract

The present application relates to the technical field of cable, in particular to a kind of conductor joint welding device for cable production, including welding mechanism, sealing ring, sealing mechanism, vacuum mechanism, power mechanism, intercepting pad and welding cable;The welding mechanism is provided with 2, and two welding mechanisms are adhered and clamped and reinforced from both sides when welding;The sealing ring is installed on the side of welding mechanism, and the sealing mechanism is installed on the top of welding mechanism, the sealing mechanism uses the large amount of heat generated in the aluminum thermal reaction to heat the liquid water in the internal cavity to generate water vapor, the vacuum mechanism is installed in the inside of welding mechanism, and the vacuum mechanism carries out vacuum treatment to locking cavity and welding cavity in the inside of welding mechanism by the air suction channel opened in welding mechanism, and the power mechanism is installed on the side of vacuum mechanism.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and more specifically to a conductor joint welding device for cable production. Background Technology

[0002] In cable manufacturing, the connection quality of conductor joints directly affects the cable's conductivity, mechanical strength, and long-term operational reliability. In existing technologies, aluminothermic reactive welding, which utilizes the exothermic reaction between aluminum and metal oxides to instantly generate high-temperature liquid metal, achieves conductor joint fusion. This method offers advantages such as high weld strength, low connection resistance, and no need for external power supply, making it widely used for joint welding in large-section cables and high-current transmission lines. However, in practical applications, traditional aluminothermic reactive welding equipment still has several shortcomings. Due to the rapid reaction speed and high fluidity of the molten metal during welding, bubbles and inclusions easily form in the welding area without effective control and guidance. These bubbles not only weaken the mechanical strength of the weld but also increase contact resistance, leading to localized heating during cable operation and potentially causing malfunctions. Therefore, reducing bubble formation and improving weld density and stability are pressing issues that existing aluminothermic reactive welding equipment needs to address.

[0003] On the other hand, the current common aluminothermic reactive welding equipment has a relatively simple structural design, usually relying solely on a mold to fix the conductor and guide the flow of the reactive molten metal, lacking optimization measures for gas emission and molten metal flow path. This not only results in uneven molten metal filling during welding but also easily leads to incomplete fusion areas on the conductor surface, causing potential problems such as insufficient weld joint strength and unstable conductivity. Furthermore, existing equipment generally lacks precise control over the welding process; for example, it fails to provide reasonable solutions for mold sealing, molten metal flow channel design, and venting of the reaction chamber, further exacerbating bubble formation and weld defects. These shortcomings not only affect weld quality but also restrict the widespread application of aluminothermic reactive welding technology in large-scale cable production. Therefore, there is an urgent need to develop an improved aluminothermic reactive welding equipment for conductor joints in cable production to reduce bubbles at the weld, improve weld quality and stability, and thus meet the high-reliability connection requirements of modern cable production.

[0004] In view of the above, in order to overcome the above technical problems, the present invention designs a conductor joint welding device for cable production, which solves the above technical problems. Summary of the Invention

[0005] The technical objective of this invention is to design a conductor joint welding device for cable production, which utilizes the large amount of heat generated by the aluminothermic reaction to drive a vacuum mechanism to evacuate the welding chamber, thereby ensuring uniform filling of the molten metal during welding and improving welding quality.

[0006] To achieve the above-mentioned technical objectives, the present invention provides the following technical solution:

[0007] A conductor joint welding device for cable production includes a welding mechanism, a sealing ring, a sealing mechanism, a vacuum mechanism, a power mechanism, intercepting blocks, and a welding cable. Two welding mechanisms are provided, and during welding, the two welding mechanisms are brought together and clamped from both sides for reinforcement. The clamping and reinforcement device can be a spiral clamping device, which reduces the distance between the two clamping blocks by rotating the threaded rod, thereby fixing the two welding mechanisms. The sealing ring is installed on the side of the welding mechanism, and the sealing mechanism is installed on top of the welding mechanism. The sealing mechanism utilizes the large amount of heat generated by the aluminothermic reaction during welding to heat the liquid water in the internal cavity, thereby generating water vapor. The vacuum mechanism is installed... Inside the welding mechanism, the vacuum mechanism uses a suction channel to vacuum the locking chamber and welding chamber, preventing gas from entering and interfering with the welding process. This ensures the integrity and quality of the welded parts. The power mechanism is installed on the side of the vacuum mechanism. It uses the large amount of heat generated by the aluminothermic reaction to heat the water inside the sealing mechanism to produce steam. The high-temperature, high-pressure steam drives the drive shaft in the power mechanism to rotate, thus powering the vacuum mechanism. The intercepting pad is installed inside the welding mechanism, and the welding cable is installed inside the welding mechanism and is arranged in opposite directions.

[0008] As a preferred embodiment, the intercepting pad is made entirely of copper. This invention is applicable to the welding of conductor joints in cables. The internal conductive material of the cable is copper. By making the intercepting pad copper, the resistance of the welding point can be reduced. The lower part of the intercepting pad is hollow and conical, allowing it to snap into the mating groove for quick installation. The upper part is cylindrical, which facilitates placement by hand or with tweezers. The trapezoidal design of the welding end of the welding cable allows high-temperature liquid solder to flow downwards from both sides and the middle of the welding cable, thereby improving welding quality. The intercepting pad is used to intercept the solder inside the reaction chamber before ignition, preventing the solder from entering the welding chamber or even the reserved groove too early, which could compromise welding quality.

[0009] As a preferred embodiment, the welding mechanism includes a reaction chamber, a transition channel, a welding chamber, a pre-reserved groove, a locking chamber, and a receiving groove. The reaction chamber is located above the welding mechanism and is used to hold the welding raw material. After ignition, the welding raw material undergoes an aluminothermic reaction, melting the intercepting pad into part of the solder. The transition channel is located below the reaction chamber and is used to transport the liquid solder into the welding chamber. The welding chamber is located below the transition channel and is the main welding part. The shape of the welding chamber roughly corresponds to the shape of the final weld point. The pre-reserved groove is located below the welding chamber and collects excess solder, ensuring the welding quality of the lower part of the cable. The locking chamber is located on both sides of the welding chamber and is used to hold the welding cable. The receiving groove is located on the side of the welding mechanism and is used to install a vacuum mechanism.

[0010] As a preferred embodiment, the lower part of the reaction chamber is configured as an inverted cone shape, and a mating groove is provided on the bottom surface of the reaction chamber. The mating groove is annular and is used to facilitate the quick installation of the intercepting gasket. An ignition channel is provided on the side of the reaction chamber. The ignition channel is inclined and is used to place a magnesium strip. One end of the magnesium strip is exposed outside the welding mechanism and ignited by an igniter. Unlike the traditional upper part ignition mode, the built-in magnesium strip ensures the fullness of the aluminothermic reaction and improves the safety protection of the workers.

[0011] As a preferred embodiment, the inner surface of the locking cavity is provided with a ring array of clamping blocks. The clamping blocks can improve the fixing of the welding mechanism on the welding cable, ensuring the quality and speed of welding. The side of the locking cavity is provided with a suction channel. The suction channel is bifurcated in the two locking cavities and communicates with the receiving groove at the other end. Under the action of the vacuum mechanism, the suction channel quickly sucks out the gas in the welding cavity, the reserved groove and the transition channel through the locking cavity, ensuring the welding quality, reducing the bubbles in the welding part and improving the cable performance.

[0012] As a preferred embodiment, the sealing mechanism includes a sealing cover, a heat-conducting block, a heat-conducting groove, a heating cavity, a collecting cavity, and a connecting hole. The sealing cover is installed on top of the welding mechanism, and the heat-conducting block is installed below the sealing cover. The heat-conducting block is circular to fit the reaction cavity, so that the entire heat-conducting block is located inside the reaction cavity during welding. The heat-conducting groove is located below the heat-conducting block and has an annular structure. The heat-conducting groove is used to increase the surface area of ​​the heat-conducting block, thereby improving the heat conduction rate. The heating cavity is located inside the heat-conducting block and contains liquid water. The collecting cavity is located inside the sealing cover. After the liquid water is heated and evaporates, it generates high-pressure steam, which passes through the collecting cavity and is discharged from the connecting hole. The connecting hole is located on the side of the sealing cover and is connected to a steam inlet pipe to facilitate the entry of steam into the power mechanism.

[0013] As a preferred embodiment, the vacuum mechanism includes a movable chamber, a vacuum rotor, an air inlet, an air outlet, and a protective cover. The movable chamber is located inside the vacuum mechanism, and the vacuum rotor is installed inside the movable chamber. The two vacuum rotors rotate synchronously in opposite directions while meshing with each other. Because the vacuum rotors maintain a very small gap and do not directly contact each other, a constantly changing sealed volume is formed between the vacuum rotor and the inner wall of the movable chamber as the vacuum rotor rotates. With the continuous movement of the rotor, gas is entrained in the cavity between the vacuum rotor and the movable chamber and pushed from the air inlet end to the outlet end, thereby achieving continuous pumping and transfer of gas inside the movable chamber. Through this mechanical volume change, the gas can be rapidly compressed and discharged, causing the pressure inside the movable chamber to decrease rapidly. The air inlet is located on the top of the vacuum mechanism and is connected to the suction channel. The air outlet is installed on the bottom of the vacuum mechanism. The protective cover is located on the side of the vacuum mechanism, and two meshing gears are installed inside the protective cover to control the movement of the two vacuum rotors. The meshing gears are fixed to the vacuum rotors.

[0014] As a preferred embodiment, the power mechanism includes a protective housing, a steam inlet pipe, a steam outlet pipe, and a power assembly. The protective housing is mounted on the side of the vacuum mechanism, the steam inlet pipe is mounted on the side of the protective housing, and a sealing mechanism is connected to the upper end of the steam inlet pipe. The steam inlet pipe introduces high-pressure steam into the interior of the protective housing. The steam outlet pipe is mounted on the bottom of the protective housing and discharges the steam after it has been used for work. The power assembly is mounted inside the protective housing and is used to drive the vacuum mechanism to rotate.

[0015] As a preferred embodiment, the power assembly includes a drive shaft, a mounting groove, a mounting ring, a fixed blade, a fixed ring, and a rotating blade; the drive shaft is installed in the middle of the protective housing, and the drive shaft and the meshing gear are fixedly installed, serving as the power source for the meshing gear; the mounting groove is formed on the surface of the drive shaft; the mounting ring is installed on the mounting groove; the fixed blade is installed on the outer side of the mounting ring; the fixed ring is installed on the inner side of the protective housing; and the rotating blade is installed on the outer side of the fixed ring.

[0016] As a preferred embodiment, the mounting ring, the fixed blade, and the fixed ring are configured as fixed parts, and the mounting ring and the rotating blade are configured as rotating parts. The mounting ring and the drive shaft in the fixed part are rotatably mounted, while the mounting ring and the drive shaft in the rotating part are fixedly mounted. The fixed parts and the rotating parts are spaced apart, and multiple sets are provided according to the size of the welding mechanism.

[0017] The beneficial effects of this invention are as follows:

[0018] (1) This invention solves the problem of excessive air bubbles and uneven welding caused by residual air in traditional aluminothermic reaction welding by introducing a vacuum mechanism during the welding process. The vacuum mechanism can remove the gas in the welding cavity and flow channel in a timely manner while the aluminothermic reaction releases high-temperature molten metal, significantly reducing porosity and inclusions in the weld joint, thereby effectively improving the density and conductivity of the weld joint. Compared with existing devices that rely solely on natural venting, this invention greatly improves the stability of welding quality and provides a reliable guarantee for the long-term safe use of cable conductor joints.

[0019] (2) The present invention incorporates an intercepting pad and a pre-reserved groove, which allows for proper diversion and restriction of the molten solder when it is introduced into the welding cavity, preventing excessive molten metal from accumulating directly at the welding position and causing irregular weld points or overflow. After welding, excess solder is introduced into the pre-reserved groove for cooling and collection, without affecting the joint shape or subsequent cable sheathing process. Furthermore, the intercepting pad partially melts and fuses with the weld point during the reaction, enhancing the joint strength. This structural design balances solder utilization and welding precision, reducing waste and improving the overall process level.

[0020] (3) In the power transmission process, this invention utilizes a sealing mechanism to convert the heat of reaction into steam pressure, and then uses the steam to drive the vacuum mechanism, thus achieving energy reuse. This avoids additional energy consumption and reduces production costs, while also reducing reliance on external power devices, giving the welding equipment greater independence and adaptability. The device has a compact overall structure and is easy to operate, making it widely applicable to production lines for cables of different specifications. Its high efficiency, energy saving, and reliability not only give it a significant advantage in welding quality but also demonstrate outstanding benefits in terms of economy and promotional value. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] The above and other aspects of the invention will now be described by way of example only, with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram showing the installation positions of the intercepting pad and the welding cable of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the welding mechanism of the present invention;

[0026] Figure 4 This is a schematic diagram of the location of the air intake channel in this invention;

[0027] Figure 5 This is a schematic diagram of the gas flow direction of the present invention;

[0028] Figure 6 This is a schematic diagram of the internal structure of the sealing mechanism of the present invention;

[0029] Figure 7 This is a schematic diagram of the vacuum mechanism structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the installation position of the meshing gear of the present invention;

[0031] Figure 9 This is a schematic diagram of the power mechanism structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the power component structure of the present invention.

[0033] In the diagram: 1. Welding mechanism; 11. Reaction chamber; 111. Fitting groove; 112. Ignition channel; 12. Transition flow channel; 13. Welding chamber; 14. Reserved groove; 15. Locking chamber; 151. Clamping block; 152. Suction flow channel; 16. Receiving groove; 2. Sealing ring; 3. Sealing mechanism; 31. Sealing cover; 32. Heat-conducting block; 33. Heat-conducting groove; 34. Heating cavity; 35. Collection cavity; 36. Connecting hole; 4. Vacuum mechanism ; 41. Movable chamber; 42. Vacuum rotor; 43. Air inlet; 44. Air outlet pipe; 45. Protective cover; 451. Meshing gear; 5. Power mechanism; 51. Protective shell; 52. Steam inlet pipe; 53. Steam outlet pipe; 54. Power assembly; 541. Drive shaft; 542. Mounting groove; 543. Mounting ring; 544. Fixed blade; 545. Fixed ring; 546. Rotating blade; 6. Intercepting pad; 7. Welding cable. Detailed Implementation

[0034] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0035] like Figure 1-10As shown, a conductor joint welding device for cable production includes a welding mechanism 1, a sealing ring 2, a sealing mechanism 3, a vacuum mechanism 4, a power mechanism 5, an intercepting pad 6, and a welding cable 7. The device has two welding mechanisms 1, which fit together during welding, clamping and reinforcing the welding area from both sides of the cable. To achieve reliable fixation, a spiral clamping device is preferably used, which has a threaded rod inside. During operation, rotating the threaded rod gradually reduces the distance between the two clamping blocks, thereby applying a locking force to the two welding mechanisms 1 and ensuring structural stability during welding. The sealing ring 2 is installed on the side of the welding mechanism 1 to improve the sealing performance between the welding cavity 13 and the outside, preventing air infiltration. The sealing mechanism 3 is installed on the upper part of the welding mechanism 1, and uses the high-temperature heat generated by the aluminothermic reaction to heat the internal liquid water, causing it to rapidly evaporate and generate high-temperature, high-pressure steam, providing thermal energy for the subsequent power mechanism 5. Furthermore, the vacuum mechanism 4 is installed inside the welding mechanism 1. The vacuum mechanism 4 is connected to the suction channel 152 inside the welding mechanism 1, thereby enabling vacuum evacuation of areas such as the welding chamber 13, locking chamber 15, and reserved groove 14, preventing air and impurities from entering the welding chamber 13 and interfering with the welding process. The vacuum effectively reduces bubble formation in the welding area, improving the density and conductivity of the weld joint. The power mechanism 5 is installed on the side of the vacuum mechanism 4. During operation, it utilizes the large amount of heat released by the aluminothermic reaction to heat and vaporize the liquid water in the sealing mechanism 3. The steam, under high pressure, enters the power mechanism 5 through a steam pipe, driving the rotating shaft and blades to rotate, thus providing continuous power to the vacuum mechanism 4 and achieving cyclic vacuuming. The intercepting pad 6 is installed inside the welding mechanism 1, and the welding cable 7 is installed in opposite directions within the welding mechanism 1, ensuring accurate connection of the conductors at both ends and full coverage by the welding metal.

[0036] like Figure 2 As shown, the intercepting pad 6 is made entirely of copper. Since the main conductive material of the cable is copper, designing the intercepting pad 6 as copper not only reduces the contact resistance of the welding point but also allows it to fully fuse with the molten solder during the high-temperature aluminothermic reaction. The lower part of the intercepting pad 6 is machined into a hollow cone shape, allowing for precise insertion into the mating groove 111 for quick installation and positioning; the upper part is designed as a cylinder, facilitating placement and operation by hand or tweezers. The welding end of the welding cable 7 is machined into a trapezoidal shape. This trapezoidal structure facilitates the even flow and penetration of high-temperature liquid solder from both sides and the middle of the cable, significantly improving welding strength and reliability. Before ignition, the intercepting pad temporarily blocks the molten solder, keeping it within the reaction chamber 11 and preventing premature flow of solder into the welding chamber 13 or the pre-reserved groove 14. This ensures that the molten metal concentrates on the conductor joint area during welding, guaranteeing welding quality.

[0037] like Figure 3-5 As shown, the welding mechanism 1 consists of a reaction chamber 11, a transition channel 12, a welding chamber 13, a pre-reserved groove 14, a locking chamber 15, and a receiving groove 16. The reaction chamber 11 is located above the welding mechanism 1 and is used to hold the aluminothermic welding raw material. After ignition, the raw material undergoes an aluminothermic reaction, and the released high-temperature liquid metal can form solder together with the intercepting pad 6. A transition channel 12 is located at the lower part of the reaction chamber 11, which guides the molten solder into the welding chamber 13. The welding chamber 13, located below the transition channel 12, is the main welding area, and its shape is similar to the final weld point, thus ensuring the accuracy of the weld point formation. A pre-reserved groove 14 is located at the lower part of the welding chamber 13 to collect excess solder, preventing solder overflow from affecting the welding quality of the lower end of the cable. Locking chambers 15 are located on both sides of the welding chamber 13 for fixing the cable conductor. A receiving groove 16 is located on the side of the welding mechanism 1 for installing a vacuum mechanism 4, thereby achieving internal vacuuming.

[0038] like Figure 3 As shown, the lower part of the reaction chamber 11 is inverted conical, with an annular groove 111 on its bottom surface to facilitate quick snap-fit ​​positioning of the intercepting gasket. An inclined ignition channel 112 is provided on the side of the reaction chamber 11, within which a magnesium strip can be placed, with one end exposed outside the welding mechanism 1. Workers can ignite the magnesium strip using an igniter, thereby initiating the aluminothermic reaction. Unlike traditional direct ignition from above, this design allows for more concentrated ignition and a more complete reaction, while also improving operational safety by avoiding direct contact between workers and high-temperature areas.

[0039] The inner surface of the locking cavity 15 is arranged in a ring array with multiple clamping blocks 151, which enhances the clamping effect of the welding mechanism 1 on the cable conductor and ensures the stability of the welding position. A suction channel 152 is provided on the side of the locking cavity 15. This channel is arranged in a forked manner in the two locking cavities 15 and connects to the receiving groove 16 at its end. Under the driving action of the vacuum mechanism 4, the gas in the welding cavity 13, the reserved groove 14, and the transition channel 12 can be quickly discharged through the suction channel 152, thereby reducing the formation of bubbles, ensuring weld tightness, and significantly improving the overall performance of the cable joint.

[0040] like Figure 6As shown, the sealing mechanism 3 includes a sealing cover 31, a heat-conducting block 32, a heat-conducting groove 33, a heating cavity 34, a collecting cavity 35, and a connecting hole 36. The sealing cover 31 is installed above the welding mechanism 1, and the heat-conducting block 32 is installed below the sealing cover 31. It has a circular structure and can cooperate with the reaction cavity 11. During the welding process, the heat-conducting block 32 is located inside the reaction cavity 11 and can fully absorb the heat generated by the aluminothermic reaction. An annular heat-conducting groove 33 is opened at the bottom of the heat-conducting block 32 to increase the heating area and accelerate the heat conduction rate. The heating cavity 34 is set inside the heat-conducting block 32, and liquid water is stored in the cavity. After being heated, it is quickly converted into steam. The steam is concentrated in the collecting cavity 35 inside the sealing cover 31 and discharged through the side connecting hole 36. It is then transported to the power mechanism 5 through the steam inlet pipe 52 to form driving power.

[0041] like Figure 7-8 As shown, the vacuum mechanism 4 includes a movable chamber 41, a vacuum rotor 42, an air inlet 43, an air outlet pipe 44, and a protective cover 45. The vacuum rotor 42 is installed inside the movable chamber 41, and the two vacuum rotors 42 rotate synchronously in opposite directions in a meshing state, maintaining a minimal gap with the wall of the movable chamber 41 without contact. During rotation, a continuously changing sealed volume is formed between the vacuum rotor 42 and the movable chamber 41, thereby pushing gas from the air inlet 43 end to the outlet end, achieving continuous gas discharge. The air inlet 43 is located above the vacuum mechanism 4 and communicates with the suction channel 152. The outlet is connected to the air outlet pipe 44 for discharging gas outside the device. The side of the vacuum mechanism 4 is provided with a protective cover 45, which houses two meshing gears 451. The gears are fixedly connected to the vacuum rotors 42, and their mutual transmission controls the rotor's movement trajectory, achieving a stable and reliable pumping effect.

[0042] like Figure 7-9 As shown, the power mechanism 5 includes a protective housing 51, a steam inlet pipe 52, a steam outlet pipe 53, and a power assembly 54. The protective housing 51 is installed on the side of the vacuum mechanism 4 and houses the power assembly 54. The steam inlet pipe 52 is connected to the connection hole 36 of the sealing mechanism 3, allowing the high-pressure steam generated in the sealing mechanism 3 to be introduced into the power mechanism 5. After the steam drives the power assembly 54 to perform work inside, it is discharged through the steam outlet pipe 53. The power assembly 54 is installed in the protective housing 51, and its core component is a drive shaft 541. The drive shaft 541 is connected to the meshing gear 451 in the vacuum mechanism 4, providing rotational power to the vacuum rotor 42.

[0043] like Figure 10As shown, the power assembly 54 includes a drive shaft 541, a mounting groove 542, a mounting ring 543, a fixed blade 544, a fixed ring 545, and a rotating blade 546. The drive shaft 541 is fixed to the middle of the protective housing 51 and is linked with the meshing gear 451. The mounting groove 542 is formed on the surface of the drive shaft 541, and the mounting ring 543 is installed on the mounting groove 542. The fixed blade 544 is connected to the outside of the mounting ring 543. The fixed ring 545 is installed on the inner wall of the protective housing 51, and the rotating blade 546 is arranged on the outside of the fixed ring 545. Through the alternating arrangement of the fixed and rotating parts, the steam impacts the blades when it expands inside, causing the drive shaft 541 to drive the meshing gear 451 to rotate, thereby forming a stable power output. Depending on the size of the welding mechanism 1, multiple sets of fixed and rotating parts can be set to meet different power requirements.

[0044] In the operation of this invention, firstly, two welding cables 7 to be welded are placed in the locking cavity 15 of the welding mechanism 1 and fixed by a spiral reinforcement. Then, an intercepting pad 6 is installed in the mating groove 111 at the bottom of the reaction chamber 11 to block the solder from flowing down before ignition. Subsequently, sufficient solder powder is placed in the reaction chamber 11. A certain amount of water is added to the heating cavity 34 beforehand through the connecting hole 36. The sealing mechanism 3 is covered on the welding mechanism 1, and the steam inlet pipe 52 is inserted into the connecting hole 36. The two ends of the magnesium strip are set through the ignition channel 112. The magnesium strip is ignited through the ignition channel 112, triggering a violent reaction of the thermite in the reaction chamber 11, releasing a large amount of high-temperature molten metal. The molten metal, including the high-temperature melted intercepting pad 6, flows into the welding cavity 13 under the action of the transition channel 12, contacts the cable conductor, and forms a strong solder joint. Excess solder is guided into the reserved groove 14.

[0045] During the welding process, the bottom of the sealing mechanism 3 absorbs the heat of the reaction, causing the liquid water in the heating cavity 34 to rapidly vaporize and generate high-pressure steam. The steam enters the power mechanism 5 and then enters the protective shell 51 through the steam inlet pipe 52. After passing through the rotating blades 546 and the fixed blades 544, the driving shaft 541 rotates rapidly. The rotating blades 546 drive the driving shaft 541 to rotate under the action of the high-temperature steam. The rotating blades 546 are directly connected to the driving shaft 541. When the high-speed steam flows through the rotating blades 546, the rotating blades 546 rotate under the action of impact force or lift, thereby driving the driving shaft 541 to rotate and output mechanical energy. The main function of the fixed blades 544 is to change the flow direction and speed of the steam, guide the steam to a suitable angle, and make the steam flow evenly and steadily to the rotating blades 546, thereby improving the utilization rate of steam and reducing energy loss.

[0046] In summary, the drive shaft 541 drives the vacuum mechanism 4. The vacuum mechanism 4 discharges the gas from the welding chamber 13, the transition channel 12, and the reserved groove 14 through the suction channel 152. A constantly changing sealed volume is formed between the vacuum rotor 42 and the moving chamber 41, which pushes the gas from the inlet port 43 to the outlet port, achieving continuous gas discharge. This creates a low-pressure environment, effectively reducing bubble formation and ensuring the density and conductivity of the weld joint. As the aluminothermic reaction ends, the intercepting pad 6 is partially melted and fused with the solder. The conductors at both ends of the cable achieve stable welding under high temperature, resulting in a conductor joint with high strength, low resistance, and stable quality.

[0047] Various modifications to this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein. Although one or more exemplary embodiments of this disclosure have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope of this disclosure as defined by the appended claims.

Claims

1. A conductor joint welding device for cable production, characterized in that, It includes a welding mechanism (1), a sealing ring (2), a sealing mechanism (3), a vacuum mechanism (4), a power mechanism (5), an intercepting pad (6), and a welding cable (7); Two welding mechanisms (1) are provided. During welding, the two welding mechanisms (1) are attached together and clamped from both sides for reinforcement. The sealing ring (2) is installed on the side of the welding mechanism (1), and the sealing mechanism (3) is installed on the top of the welding mechanism (1). The sealing mechanism (3) uses the large amount of heat generated by the aluminothermic reaction during welding to heat the liquid water in the internal cavity to generate water vapor. The vacuum mechanism (4) is installed inside the welding mechanism (1). The vacuum mechanism (4) uses the suction channel (152) opened in the welding mechanism (1) to draw water from the welding mechanism. (1) The internal locking cavity (15) and welding cavity (13) are vacuumed. The power mechanism (5) is installed on the side of the vacuum mechanism (4). The power mechanism (5) uses a large amount of heat energy generated by the aluminothermic reaction to heat the water inside the sealing mechanism (3) to generate steam. The high temperature and high pressure steam drives the drive shaft (541) in the power mechanism (5) to rotate, thereby providing energy to the vacuum mechanism (4). The intercepting pad (6) is installed inside the welding mechanism (1). The welding cable (7) is installed inside the welding mechanism (1) and is arranged in opposite directions. The intercepting pad (6) is made entirely of copper. The lower part of the intercepting pad (6) is hollow conical and the upper part is cylindrical. The welding end of the welding cable (7) is trapezoidal. The welding mechanism (1) includes a reaction chamber (11), a transition channel (12), a welding chamber (13), a reserved groove (14), a locking chamber (15), and a receiving groove (16). The reaction chamber (11) is located above the welding mechanism (1), the transition channel (12) is located below the reaction chamber (11), the welding chamber (13) is located below the transition channel (12), the reserved groove (14) is located below the welding chamber (13), the locking chamber (15) is located on both sides of the welding chamber (13), and the receiving groove (16) is located on the side of the welding mechanism (1). The lower part of the reaction chamber (11) is configured as an inverted cone shape, and a mating groove (111) is provided on the bottom surface of the reaction chamber (11). The mating groove (111) is configured as an annular shape, and an ignition channel (112) is provided on the side of the reaction chamber (11). The ignition channel (112) is inclined. The vacuum mechanism (4) includes a movable chamber (41), a vacuum rotor (42), an air inlet (43), an air outlet pipe (44), and a protective cover (45). The movable cavity (41) is located inside the vacuum mechanism (4), the vacuum rotor (42) is installed inside the movable cavity (41), the air inlet (43) is located on the top of the vacuum mechanism (4), the air outlet pipe (44) is installed on the bottom of the vacuum mechanism (4), the protective cover (45) is located on the side of the vacuum mechanism (4), and two meshing gears (451) are provided inside the protective cover (45), the meshing gears (451) are fixed on the vacuum rotor (42); The power mechanism (5) includes a protective shell (51), a steam inlet pipe (52), a steam outlet pipe (53), and a power assembly (54). The protective housing (51) is installed on the side of the vacuum mechanism (4), the steam inlet pipe (52) is installed on the side of the protective housing (51), the steam outlet pipe (53) is installed below the protective housing (51), and the power assembly (54) is installed inside the protective housing (51). The power assembly (54) includes a drive shaft (541), a mounting groove (542), a mounting ring (543), a fixed blade (544), a fixed ring (545), and a rotating blade (546). The drive shaft (541) is installed in the middle of the protective housing (51), the mounting groove (542) is opened on the surface of the drive shaft (541), the mounting ring (543) is installed on the mounting groove (542), the fixing blade (544) is installed on the outer side of the mounting ring (543), the fixing ring (545) is installed on the inner side of the protective housing (51), and the rotating blade (546) is installed on the outer side of the fixing ring (545). The mounting ring (543), the fixed blade (544), and the fixed ring (545) are configured as fixed parts, and the mounting ring (543) and the rotating blade (546) are configured as rotating parts. The mounting ring (543) and the drive shaft (541) in the fixed part are rotatably mounted, while the mounting ring (543) and the drive shaft (541) in the rotating part are fixedly mounted.

2. The conductor joint welding device for cable production according to claim 1, characterized in that: The inner surface of the locking cavity (15) is provided with clamping blocks (151) arranged in a ring array. The side of the locking cavity (15) is provided with a suction air channel (152). The suction air channel (152) is bifurcated in the two locking cavities (15) and communicates with the receiving groove (16) at the other end.

3. The conductor joint welding device for cable production according to claim 1, characterized in that: The sealing mechanism (3) includes a sealing cover (31), a heat-conducting block (32), a heat-conducting groove (33), a heating cavity (34), a collection cavity (35), and a connecting hole (36). The sealing cover (31) is installed on top of the welding mechanism (1), the heat-conducting block (32) is installed below the sealing cover (31), the heat-conducting groove (33) is opened below the heat-conducting block (32), the heat-conducting groove (33) is annular, the heating cavity (34) is opened inside the heat-conducting block (32), the collecting cavity (35) is opened inside the sealing cover (31), and the connecting hole (36) is opened on the side of the sealing cover (31).

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