Conductor joint welding device for cable production

Abstract

The invention relates to the technical field of cables, in particular to a conductor joint welding device for cable production, which comprises a welding mechanism, a sealing ring, a sealing mechanism, a vacuum mechanism, a power mechanism, an interception cushion block and a welding cable, the number of the welding mechanisms is two, and the two welding mechanisms are attached and clamped and reinforced from the two sides in the welding process. The sealing ring is installed on the side face of the welding mechanism, the sealing mechanism is installed on the upper face of the welding mechanism, the sealing mechanism heats liquid water in an inner cavity through a large amount of heat generated by thermit reaction in welding so as to generate water vapor, and the vacuum mechanism is installed in the welding mechanism. The vacuum mechanism conducts vacuum treatment on a locking cavity and a welding cavity in the welding mechanism through an air suction flow channel formed in the welding mechanism, and the power mechanism is installed on the side face of the vacuum mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable, in particular to a conductor joint welding device for cable production. BACKGROUND

[0002] In the process of cable production, the connection quality of conductor joint directly affects the electrical conductivity, mechanical strength and long-term reliability of the cable. In the prior art, the aluminum thermal reaction welding can generate high-temperature liquid metal instantaneously through the exothermic reaction between metal aluminum and metal oxide, so as to realize the fusion of the conductor joint, and has the advantages of high welding strength, small connection resistance and no need for external power supply, and is widely used in the joint welding of large-section cables and high-current transmission lines. However, in actual application, the traditional aluminum thermal reaction welding device still has many deficiencies. Because of the fast reaction speed and strong flowability of molten metal in the welding process, if there is no effective control and guidance, bubbles and inclusions are easily formed in the welding area. These bubbles not only weaken the mechanical strength of the welding point, but also increase the contact resistance, and then cause local heating during cable operation, and even may cause failure in serious cases. Therefore, how to reduce the generation of bubbles in the welding process and improve the compactness and stability of the welding point is a problem to be solved for the existing aluminum thermal reaction welding device.

[0003] On the other hand, the structure design of the common aluminum thermal reaction welding device is relatively simple at present, usually only relies on the mold to fix the conductor and guide the flow of the reaction molten metal, and lacks optimization measures for gas discharge and molten metal flow path. This not only makes the molten metal filling uneven during welding, but also easily forms the area that is not completely fused on the surface of the conductor, resulting in the hidden danger of insufficient strength and unstable electrical conductivity of the welded joint. In addition, the existing device generally lacks fine control of the welding process, for example, the mold sealing, molten metal flow channel design, reaction cavity exhaust and other aspects cannot provide reasonable solutions, further aggravating the problems of bubble generation and welding point defects. These deficiencies not only affect the welding quality, but also restrict the popularization and application of the aluminum thermal reaction welding technology in large-scale production of cables. Therefore, it is urgent to develop an improved conductor joint aluminum thermal reaction welding device for cable production to reduce bubbles at the welding site, improve the welding quality and stability, so as to meet the demand of modern cable production for high-reliability connection.

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

[0005] The technical problem to be solved by the present application is to design a conductor joint welding device for cable production, which utilizes a large amount of heat generated by aluminum thermal reaction to drive a vacuum mechanism to perform air extraction treatment on a welding cavity, so that the molten metal during welding is uniformly filled, and the welding quality is improved.

[0006] In order to achieve the above technical purpose, the present application provides the following technical scheme: A conductor joint welding device for cable production, comprising a welding mechanism, a sealing ring, a sealing mechanism, a vacuum mechanism, a power mechanism, an intercepting pad and a welding cable; the welding mechanism is provided with two, and the two welding mechanisms are adhered and clamped and reinforced from both sides during welding; the clamping and reinforcing device can be a spiral reinforcing device, which reduces the distance between the two clamping blocks by rotating the threaded rod, so as to fix the two welding mechanisms; the sealing ring is installed on the side surface of the welding mechanism; the sealing mechanism is installed on the upper surface of the welding mechanism; the sealing mechanism utilizes a large amount of heat generated by aluminum thermal reaction in welding to heat the liquid water in the internal cavity to generate water vapor; the vacuum mechanism is installed in the inside of the welding mechanism; the vacuum mechanism performs vacuum treatment on the locking cavity and the welding cavity in the inside of the welding mechanism through the air suction channel formed in the welding mechanism, so as to avoid gas from entering the welding cavity to interfere with welding, and thus the integrity of the welding part and the welding quality can be ensured during welding; the power mechanism is installed on the side surface of the vacuum mechanism; the power mechanism utilizes a large amount of heat generated by aluminum thermal reaction to heat the water in the inside of the sealing mechanism to generate steam, and the high-temperature and high-pressure steam drives the driving shaft in the power mechanism to rotate, so as to supply energy to the vacuum mechanism; the intercepting pad is installed in the inside of the welding mechanism; and the welding cable is installed in the inside of the welding mechanism and is arranged oppositely.

[0007] As a preferred scheme, the intercepting pad is made of copper throughout, the present application is suitable for conductor joint welding of cables, the internal conductive main body material of the cable is copper, the intercepting pad is made of copper, so as to reduce the resistance of the welding point, the lower part of the intercepting pad is provided in a hollow conical shape, so as to be clamped in the matching groove to complete rapid installation, the upper part is provided in a cylindrical shape, the cylindrical part is used for facilitating workers to place by hand or using tweezers, and the welding end of the welding cable is provided in a ladder-shaped structure, so that the high-temperature liquid solder flows downward from both sides and the middle of the welding cable, so as to improve the welding quality; the intercepting pad is used to intercept the solder in the inside of the reaction cavity before ignition, so as to avoid the solder from entering the welding cavity or even the reserved groove too early, and thus the welding quality cannot be guaranteed.

[0008] As a preferred scheme, the welding mechanism comprises a reaction cavity, a transition flow channel, a welding cavity, a reserved groove, a locking cavity and a containing groove; the reaction cavity is arranged on the upper surface of the welding mechanism, and is used for placing welding raw materials; the welding raw materials are ignited to generate an aluminothermic reaction to melt the intercepting pad into part of the welding material; the transition flow channel is arranged below the reaction cavity, and is used for transporting the liquid welding material into the welding cavity; the welding cavity is arranged below the transition flow channel, and is a main welding part; the welding cavity has a shape of the last welding point; the reserved groove is arranged below the welding cavity, and is used for collecting excess welding material and ensuring the welding quality of the lower part of the cable; the locking cavity is arranged on both sides of the welding cavity, and is used for placing the welding cable; and the containing groove is arranged on the side surface of the welding mechanism, and is used for installing the vacuum mechanism.

[0009] As a preferred scheme, the lower part of the reaction cavity is arranged in an inverted conical shape, and a matching groove is arranged on the bottom surface of the reaction cavity; the matching groove is arranged in a ring shape, and is used for facilitating quick installation of the intercepting pad; and an ignition channel is arranged on the side surface of the reaction cavity, and is arranged in an inclined manner; the ignition channel is used for placing a magnesium strip, one end of the magnesium strip is exposed outside the welding mechanism, and an igniter is used for ignition; the ignition channel is different from a conventional upper part ignition mode, and the built-in magnesium strip ensures the sufficiency of the aluminothermic reaction and improves the safety protection of the worker.

[0010] As a preferred scheme, the inner surface of the locking cavity is arranged with clamping blocks in a ring shape; the clamping blocks can improve the fixation of the welding mechanism on the welding cable, and ensure the welding quality and speed; an air suction flow channel is arranged on the side surface of the locking cavity; the air suction flow channel is arranged in a bifurcated shape in the two locking cavities, and is arranged in communication with the containing groove at the other end; under the action of the vacuum mechanism, the air suction flow channel quickly sucks out the gas in the welding cavity, the reserved groove and the transition flow channel through the locking cavity, ensures the welding quality, reduces the bubbles in the welding part, and improves the cable performance.

[0011] As a preferred scheme, the sealing mechanism comprises a sealing cover, a heat conduction block, a heat conduction groove, a heating cavity, a collection cavity and a connecting hole; the sealing cover is arranged on the upper surface of the welding mechanism; the heat conduction block is arranged below the sealing cover and is arranged in a circular shape to match the reaction cavity, so that the entire heat conduction block is located inside the reaction cavity during welding; the heat conduction groove is arranged below the heat conduction block and has a ring structure; the heat conduction groove is used for increasing the surface area of the heat conduction block to improve the heat conduction rate; the heating cavity is arranged inside the heat conduction block; liquid water is arranged in the heating cavity; the collection cavity is arranged inside the sealing cover; high-pressure water vapor generated by the evaporation of the liquid water is discharged from the connecting hole after passing through the collection cavity; and the connecting hole is arranged on the side surface of the sealing cover and is connected with a steam inlet pipe, so that the steam can enter the power mechanism.

[0012] As a preferred scheme, the vacuum mechanism comprises a movable cavity, vacuum rotors, an air inlet hole, an air outlet pipeline and a protective cover; the movable cavity is arranged in the vacuum mechanism, the vacuum rotors are arranged in the movable cavity, and the two vacuum rotors rotate reversely synchronously in the meshing state. Since the vacuum rotors do not directly contact each other due to the extremely small gap therebetween, a continuously changing sealed volume is formed between the vacuum rotors and the inner wall of the movable cavity when the vacuum rotors rotate. With the continuous movement of the rotors, the gas is carried in the cavity between the vacuum rotors and the movable cavity, is pushed from the air inlet hole end to the outlet end, and is continuously pumped and transferred, so that the pressure in the movable cavity is rapidly reduced. The air inlet hole is arranged on the upper surface of the vacuum mechanism, the air inlet hole and the air inlet flow channel are arranged in communication, the air outlet pipeline is arranged on the lower surface of the vacuum mechanism, and the protective cover is arranged on the side surface of the vacuum mechanism. The protective cover is internally provided with two meshing gears for controlling the movement of the two vacuum rotors, and the meshing gears are fixed on the vacuum rotors.

[0013] As a preferred scheme, the power mechanism comprises a protective shell, a steam inlet pipe, a steam outlet pipe and a power assembly; the protective shell is arranged on the side surface of the vacuum mechanism, the steam inlet pipe is arranged on the side surface of the protective shell, the upper end of the steam inlet pipe is connected with a sealing mechanism, the steam inlet pipe inputs high-pressure steam into the interior of the protective shell, the steam outlet pipe is arranged on the lower surface of the protective shell, the steam outlet pipe discharges steam after work, and the power assembly is arranged in the interior of the protective shell and is used for driving the vacuum mechanism to rotate.

[0014] As a preferred scheme, the power assembly comprises a driving shaft, a mounting groove, a mounting ring, a fixed blade, a fixed ring and a rotating blade; the driving shaft is arranged in the middle of the protective shell, the driving shaft and the meshing gear are fixedly arranged and are the power source of the meshing gear, the mounting groove is arranged on the surface of the driving shaft, the mounting ring is arranged on the mounting groove, the fixed blade is arranged on the outer side surface of the mounting ring, the fixed ring is arranged on the inner side surface of the protective shell, and the rotating blade is arranged on the outer side surface of the fixed ring.

[0015] As a preferred scheme, the mounting ring, the fixed blade and the fixed ring are arranged as fixed parts, the mounting ring and the rotating blade are arranged as rotating parts, the mounting ring in the fixed part and the driving shaft are rotatably arranged, and the mounting ring in the rotating part and the driving shaft are fixedly arranged; the fixed part and the rotating part are arranged in a spaced mode and are provided with a plurality of groups according to the size of the welding mechanism.

[0016] The beneficial effects of the application are as follows: (1) The present application introduces a vacuum mechanism in the welding process, solves the problem of more welding point bubbles and uneven welding caused by air residues in traditional aluminothermic reaction welding. The vacuum mechanism can timely remove the gas in the welding cavity and flow channel while the aluminum thermal reaction releases high-temperature molten metal, significantly reducing the pores and inclusions in the welded joint, thereby effectively improving the density and conductivity of the welding point. Compared with the existing device which only relies on natural exhaust, the present application greatly improves the stability of the welding quality, providing reliable protection for the long-term safe use of the cable conductor joint.

[0017] (2) The present application sets up the structure of intercepting pad and reserved groove, so that the molten solder can be reasonably distributed and limited when introduced into the welding cavity, avoiding the direct accumulation of excessive molten metal at the welding position, which can cause irregular or overflow of the welding point. After welding, the excess solder is introduced into the reserved groove for cooling and collection, which will not affect the joint shape and subsequent cable coating process. In addition, the intercepting pad is partially melted and fused with the welding point during the reaction, which can enhance the joint strength. This structure design takes into account the solder utilization rate and welding precision, reduces waste, and improves the overall process level.

[0018] (3) The present application utilizes a sealing mechanism in the power transmission link to convert the reaction heat into steam pressure, and the vacuum mechanism is driven by steam, realizing energy reuse. On the one hand, this avoids additional energy consumption and reduces production costs, on the other hand, it also reduces the dependence on external power devices, making the welding equipment have strong independence and adaptability. The overall structure of the device is compact and easy to operate, and can be widely applied to production lines of different specifications of cables. Its high efficiency, energy saving and reliability make it not only have a significant advantage in welding quality, but also have outstanding beneficial effects in economy and popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0020] The above and other aspects of the present application will now be described by way of example only, with reference to the accompanying drawings in which: Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the installation position of the intercepting pad and the welding cable of the present application; Figure 3 is a schematic diagram of the internal structure of the welding mechanism of the present application; Figure 4 is the schematic diagram of the air inlet channel position of the application; Figure 5 is the schematic diagram of the gas flow direction of the application; Figure 6 is the schematic diagram of the internal structure of the sealing mechanism of the application; Figure 7 is the schematic diagram of the vacuum mechanism structure of the application; Figure 8 is the schematic diagram of the installation position of the engaging gear of the application; Figure 9 is the schematic diagram of the power mechanism structure of the application; Figure 10 is the schematic diagram of the power assembly structure of the application.

[0021] In the figure: 1, welding mechanism; 11, reaction cavity; 111, matching groove; 112, ignition channel; 12, transition channel; 13, welding cavity; 14, reserved groove; 15, locking cavity; 151, clamping block; 152, air inlet channel; 16, containing groove; 2, sealing ring; 3, sealing mechanism; 31, sealing cover; 32, heat conduction block; 33, heat conduction groove; 34, heating cavity; 35, collecting cavity; 36, connecting hole; 4, vacuum mechanism; 41, movable cavity; 42, vacuum rotor; 43, air inlet hole; 44, air outlet pipeline; 45, protective cover; 451, engaging gear; 5, power mechanism; 51, protective shell; 52, steam inlet pipe; 53, steam outlet pipe; 54, power assembly; 541, driving shaft; 542, installation groove; 543, installation ring; 544, fixed blade; 545, fixed ring; 546, rotating blade; 6, intercepting pad; 7, welding cable. DETAILED DESCRIPTION

[0022] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings in the specification and specific embodiments.

[0023] As Figures 1-10As shown, a kind of conductor joint welding device for cable production, including welding mechanism 1, sealing ring 2, sealing mechanism 3, vacuum mechanism 4, power mechanism 5, intercept pad 6 and welding cable 7.The device is provided with two welding mechanism 1, two welding mechanism 1 is opposite when welding and is clamped and reinforced from the two sides of cable to welding site.In order to realize reliable fixing, clamping and reinforcing device preferably adopts spiral reinforcing device, its inside is provided with threaded rod, and when operating, the distance between two clamping blocks can be gradually reduced by rotating threaded rod, so as to exert locking force to two welding mechanism 1, guarantee the stability of structure in the process of welding.The sealing ring 2 is installed on the side of welding mechanism 1, for improving the sealing performance between welding cavity 13 and outside, avoid air infiltration.The sealing mechanism 3 is installed on the upper portion of welding mechanism 1, which uses the high-temperature heat generated by aluminum thermal reaction to heat the internal liquid water, so that it is rapidly evaporated to generate high-temperature and high-pressure steam, to provide heat energy drive for subsequent power mechanism 5.Further, the vacuum mechanism 4 is installed in the inside of welding mechanism 1.Vacuum mechanism 4 is communicated with the air suction flow channel 152 opened in the inside of welding mechanism 1, so that vacuum air extraction treatment can be carried out on the welding cavity 13, locking cavity 15 and reserved groove 14 and other areas, to avoid air and impurities entering welding cavity 13 to interfere with the welding process.Through the vacuum action, the generation of bubbles in the welding area can be effectively reduced, and the density and conductivity of the welded joint can be improved.Power mechanism 5 is installed on the side of vacuum mechanism 4, which uses the large amount of heat energy released by aluminum thermal reaction to heat the liquid water in sealing mechanism 3 to vaporize, and the steam in high-pressure state enters the inside of power mechanism 5 through steam pipeline to drive the rotation of the shaft and blade therein, so as to provide continuous power for vacuum mechanism 4, to realize circulating vacuum extraction.The intercept pad 6 is installed in the inside of welding mechanism 1, and the welding cable 7 is installed in welding mechanism 1 in an opposite manner, to ensure that the two ends of the conductor can be accurately butt-jointed and fully covered by the welding metal.

[0024] As Figure 2 shown, the intercept pad 6 is made of copper material as a whole.Because the conductive main body material of the cable is copper, designing the intercept pad 6 as copper material can not only reduce the contact resistance of the welding point, but also fully fuse with the molten solder in the high-temperature aluminum thermal reaction.The lower part of the intercept pad 6 is processed as a hollow conical shape, which can be accurately clamped in the matching groove 111 to realize quick installation and positioning;the upper part is designed as a cylindrical shape, which is convenient for workers to place and operate by hand or forceps.The welding end of the welding cable 7 is processed as a ladder-shaped structure, which is conducive to the uniform flow and infiltration of high-temperature liquid solder from both sides and the middle of the cable, significantly improving the welding strength and reliability.The intercept pad is used to temporarily block the molten solder before ignition, so that it stays in the reaction cavity 11, avoiding the solder from flowing into the welding cavity 13 or the reserved groove 14 too early, so as to ensure that the molten metal can act on the conductor joint area during welding, ensuring the welding quality.

[0025] AsFigures 3-5 As shown, the welding mechanism 1 is composed of a reaction cavity 11, a transition flow channel 12, a welding cavity 13, a reserved groove 14, a locking cavity 15 and a containing groove 16. The reaction cavity 11 is arranged at the top of the welding mechanism 1, used for placing the raw materials of the aluminothermic welding. After ignition, the raw materials will undergo aluminothermic reaction, and the high-temperature liquid metal released can form the welding material together with the intercepting pad 6. The lower part of the reaction cavity 11 is provided with the transition flow channel 12, which guides the molten welding material into the welding cavity 13. The welding cavity 13 is located below the transition flow channel 12 and is the main welding area. Its shape is similar to that of the final welding point, so as to ensure the accuracy of the welding point forming. The lower part of the welding cavity 13 is provided with the reserved groove 14, which is used for collecting excess welding material to avoid the overflow of the welding material affecting the welding quality of the lower end of the cable. The locking cavities 15 are arranged on both sides of the welding cavity 13, used for fixing the cable conductor. The containing groove 16 is arranged on the side of the welding mechanism 1, used for installing the vacuum mechanism 4, so as to realize the vacuum treatment inside.

[0026] As shown in Figure 3 The lower part of the reaction cavity 11 is inverted conical, and the bottom surface is provided with an annular matching groove 111, which facilitates the quick clamping and positioning of the intercepting pad. The ignition passage 112 is arranged on the side of the reaction cavity 11, and the magnesium strip can be placed in the passage. One end of the magnesium strip is exposed outside the welding mechanism 1, and the staff can ignite the magnesium strip through the igniter, so as to trigger the aluminothermic reaction. Unlike the traditional direct ignition from the upper part, this design makes the ignition more concentrated, the reaction more sufficient, and the operation safety improved, avoiding the direct contact of the staff with the high-temperature area.

[0027] The inner surface of the locking cavity 15 is arranged with a plurality of clamping blocks 151 in an annular array, which can enhance the clamping effect of the welding mechanism 1 on the cable conductor and ensure the stability of the welding position. The side of the locking cavity 15 is provided with an air suction flow channel 152, which is arranged in a bifurcated shape in the two locking cavities 15 and is connected to the containing groove 16 at the end. Under the driving action of the vacuum mechanism 4, the gas in the welding cavity 13, the reserved groove 14 and the transition flow channel 12 can be quickly discharged through the air suction flow channel 152, so as to reduce the formation of bubbles, ensure the welding density and significantly improve the overall performance of the cable joint.

[0028] As shown in 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 collection 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 at the lower part of the sealing cover 31, which is a circular structure and can be matched with the reaction cavity 11. The heat-conducting block 32 is inside the reaction cavity 11 during the welding process, and can fully absorb the heat generated by the aluminothermic reaction. The bottom of the heat-conducting block 32 is provided with an annular heat-conducting groove 33, which increases the heating area and accelerates the heat conduction rate. The heat-conducting block 32 is internally provided with a heating cavity 34, and liquid water is stored in the cavity and rapidly converted into steam after being heated. The steam is concentrated in the collection cavity 35 inside the sealing cover 31 and is discharged through the side connecting hole 36, and is transported to the power mechanism 5 through the steam inlet pipe 52 to form a driving power.

[0029] As shown in Figures 7-8 The vacuum mechanism 4 includes a movable cavity 41, a vacuum rotor 42, an air inlet hole 43, an air outlet pipeline 44 and a protective cover 45. The vacuum rotor 42 is installed in the movable cavity 41, and the two vacuum rotors 42 are synchronously and reversely rotated in meshing state, and the wall surface of the movable cavity 41 is kept in a small gap without contact. During rotation, the vacuum rotor 42 and the movable cavity 41 form a continuously changing sealed volume, and then push the gas from the air inlet hole 43 end to the outlet end, so as to realize continuous discharge of the gas. The air inlet hole 43 is arranged above the vacuum mechanism 4 and communicates with the air suction flow channel 152, and the outlet is connected with the air outlet pipeline 44 for discharging the gas outside the device. The side surface of the vacuum mechanism 4 is provided with the protective cover 45, and two meshing gears 451 are arranged inside, which are fixedly connected with the vacuum rotor 42, and the motion trajectory of the rotor is controlled through mutual transmission, so as to realize stable and reliable air exhaust effect.

[0030] As shown in Figures 7-9 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 shell 51 is installed on the side surface of the vacuum mechanism 4, and the inside is used to accommodate the power assembly 54. The steam inlet pipe 52 is connected with the connecting hole 36 of the sealing mechanism 3, and can guide the high-pressure steam generated in the sealing mechanism 3 into the power mechanism 5. After the steam pushes the power assembly 54 to work, it is discharged through the steam outlet pipe 53. The power assembly 54 is installed in the protective shell 51, and the core component is a driving shaft 541, which is connected with the meshing gear 451 in the vacuum mechanism 4, and provides rotary power for the vacuum rotor 42.

[0031] As shown in Figure 10As shown, the power assembly 54 includes a driving shaft 541, a mounting groove 542, a mounting ring 543, a fixed blade 544, a fixed ring 545 and a rotating blade 546. The driving shaft 541 is fixed in the middle of the protective shell 51 and connected with the meshing gear 451. The mounting groove 542 is formed on the surface of the driving shaft 541, the mounting ring 543 is mounted on the mounting groove 542, and the fixed blade 544 is connected to the outside of the mounting ring 543. The fixed ring 545 is mounted on the inner wall of the protective shell 51, and the rotating blade 546 is arranged on the outside of the fixed ring 545. Through the alternating arrangement of the fixed part and the rotating part, the steam impacts the blades when it expands in the inside, so as to drive the driving shaft 541 to rotate the meshing gear 451, thereby forming stable power output. According to the size of the welding mechanism 1, a plurality of fixed parts and rotating parts can be arranged to meet different power requirements.

[0032] In the working process of the present application, first, two welding cables 7 to be welded are placed in the locking cavity 15 of the welding mechanism 1 and fixed by the spiral reinforcing device, then the intercepting pad 6 is installed in the matching groove 111 at the bottom of the reaction cavity 11 to block the downward flow of the solder before ignition. Subsequently, a sufficient amount of solder powder is placed in the reaction cavity 11, a certain amount of water is placed in the heating cavity 34 through the connecting hole 36 in advance, the sealing mechanism 3 is covered on the welding mechanism 1, the steam inlet pipe 52 is inserted into the connecting hole 36, the two ends of the magnesium strip pass through the ignition channel 112, the magnesium strip is ignited through the ignition channel 112, the violent reaction of the thermite in the reaction cavity 11 is triggered, and a large amount of high-temperature molten metal is released. The molten metal includes the intercepting pad 6 melted by high temperature, which flows into the welding cavity 13 under the action of the transition flow channel 12, contacts the cable conductor and forms a firm welding point, and the excess solder is guided into the reserved groove 14.

[0033] During the welding process, the bottom of the sealing mechanism 3 absorbs the reaction heat, so that the liquid water in the heating cavity 34 rapidly vaporizes to generate high-pressure steam. The steam enters the power mechanism 5, and then enters the protective shell 51 through the steam inlet pipe 52. The steam passes through the rotating blade 546 and the fixed blade 544 to drive the driving shaft 541 to rotate rapidly. The rotating blade 546 is directly connected with the driving shaft 541, and when the high-speed steam flows through the rotating blade 546, the rotating blade 546 rotates under the action of the impact force or the lift force, thereby driving the driving shaft 541 to rotate and output mechanical energy. The fixed blade 544 mainly changes the flow direction and speed of the steam, guides the steam to the appropriate angle, makes the steam flow uniformly and stably to the rotating blade 546, improves the utilization rate of the steam, and reduces the energy loss.

[0034] In summary, the driving shaft 541 drives the vacuum mechanism 4 to work. The vacuum mechanism 4 discharges the gas in the welding cavity 13, the transition flow channel 12 and the reserved groove 14 through the air suction flow channel 152, and forms a continuously changing sealed volume between the vacuum rotor 42 and the movable cavity 41, and then pushes the gas from the air inlet hole 43 end to the outlet end, so as to realize the continuous discharge of the gas. Thus, a low-pressure environment is formed, which effectively reduces the generation of bubbles and guarantees the compactness and conductivity of the welding point. With the end of the aluminum thermal reaction, the intercepting pad 6 is partially melted and fused with the solder, and the conductors at both ends of the cable realize stable welding under the action of high temperature, so as to obtain a conductor joint with high strength, low resistance and stable quality.

[0035] Various modifications to the 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 the disclosure. Thus, the disclosure is not to be limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein. Although one or more example embodiments of the present disclosure have been described with reference to the accompanying drawings, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims

1. A conductor joint welding device for cable production, characterized by, It comprises welding mechanism (1), sealing ring (2), sealing mechanism (3), vacuum mechanism (4), power mechanism (5), intercepting pad (6) and welding cable (7); The welding mechanism (1) is provided with two, two welding mechanisms (1) are adhered and clamped from both sides during welding; The sealing ring (2) is installed on the side of the welding mechanism (1), the sealing mechanism (3) is installed on the upper surface of the welding mechanism (1), the sealing mechanism (3) uses the large amount of heat generated by the aluminum thermal reaction in welding to heat the liquid water in the internal cavity to generate water vapor, the vacuum mechanism (4) is installed in the welding mechanism (1), the vacuum mechanism (4) carries out vacuum treatment on the locking cavity (15) and the welding cavity (13) in the welding mechanism (1) through the air suction flow channel (152) in the welding mechanism (1), the power mechanism (5) is installed on the side of the vacuum mechanism (4), the power mechanism (5) uses the large amount of heat energy generated by the aluminum thermal reaction to heat the water in the sealing mechanism (3) to generate steam, the high-temperature and high-pressure steam drives the driving shaft (541) in the power mechanism (5) to rotate, thereby supplying energy for the vacuum mechanism (4), the intercepting pad (6) is installed in the welding mechanism (1), and the welding cable (7) is installed in the welding mechanism (1) and is oppositely arranged.

2. A conductor splice welding apparatus for cable production as defined in claim 1, characterized in that: The intercepting pad (6) is made of copper throughout, the lower part of the intercepting pad (6) is provided in a hollow conical shape, and the upper part is provided in a cylindrical shape, and the welding end of the welding cable (7) is provided in a stepped shape.

3. A conductor splice welding apparatus for cable production as defined in claim 1, characterized in that: The welding mechanism (1) comprises a reaction cavity (11), a transition flow channel (12), a welding cavity (13), a reserved groove (14), a locking cavity (15) and a containing groove (16); The reaction cavity (11) is arranged on the upper surface of the welding mechanism (1), the transition flow channel (12) is arranged on the lower surface of the reaction cavity (11), the welding cavity (13) is arranged on the lower surface of the transition flow channel (12), the reserved groove (14) is arranged on the lower surface of the welding cavity (13), the locking cavity (15) is arranged on both sides of the welding cavity (13), and the containing groove (16) is arranged on the side surface of the welding mechanism (1).

4. A conductor splice welding apparatus for cable production as defined in claim 3, characterized in that: The lower part of the reaction cavity (11) is provided in an inverted conical shape, the bottom surface of the reaction cavity (11) is provided with a matching groove (111), the matching groove (111) is provided in an annular shape, the side surface of the reaction cavity (11) is provided with an ignition channel (112), and the ignition channel (112) is arranged in an inclined manner.

5. A conductor splice welding apparatus for cable production as defined in claim 3, characterized in that: The inner surface of the locking cavity (15) is provided with clamping blocks (151) in an annular array, the side surface of the locking cavity (15) is provided with an air suction flow channel (152), and the air suction flow channel (152) is bifurcated in the two locking cavities (15) and is in communication with the containing groove (16) at the other end.

6. A conductor splice welding apparatus for cable production as defined in claim 1, characterized in that: The sealing mechanism (3) comprises a sealing cover (31), a heat conduction block (32), a heat conduction groove (33), a heating cavity (34), a collecting cavity (35) and a connecting hole (36). The sealing cover (31) is installed on the upper surface of the welding mechanism (1), the heat-conducting block (32) is installed on the lower surface of the sealing cover (31), the heat-conducting groove (33) is arranged on the lower surface of the heat-conducting block (32), the heat-conducting groove (33) is in a ring structure, the heating cavity (34) is arranged in the heat-conducting block (32), the collecting cavity (35) is arranged in the sealing cover (31), and the connecting hole (36) is arranged on the side surface of the sealing cover (31).

7. The conductor splice welding apparatus for cable production of claim 1, wherein: The vacuum mechanism (4) comprises a movable cavity (41), a vacuum rotor (42), an air inlet hole (43), an air outlet pipeline (44) and a protective cover (45). The movable cavity (41) is arranged in the vacuum mechanism (4), the vacuum rotor (42) is installed in the movable cavity (41), the air inlet hole (43) is arranged on the upper surface of the vacuum mechanism (4), the air outlet pipeline (44) is installed on the lower surface of the vacuum mechanism (4), the protective cover (45) is arranged on the side surface of the vacuum mechanism (4), two meshing gears (451) are arranged in the protective cover (45), and the meshing gears (451) are fixed on the vacuum rotor (42).

8. The conductor splice welding apparatus for cable production of claim 1, wherein: The power mechanism (5) comprises a protective shell (51), a steam inlet pipe (52), a steam outlet pipe (53) and a power assembly (54). The protective shell (51) is installed on the side surface of the vacuum mechanism (4), the steam inlet pipe (52) is installed on the side surface of the protective shell (51), the steam outlet pipe (53) is installed on the lower surface of the protective shell (51), and the power assembly (54) is installed in the protective shell (51).

9. A conductor splice welding apparatus for cable production as defined in claim 8, characterized in that: The power assembly (54) comprises a driving shaft (541), a mounting groove (542), a mounting ring (543), a fixed blade (544), a fixed ring (545) and a rotating blade (546). The driving shaft (541) is installed in the middle of the protective shell (51), the mounting groove (542) is arranged on the surface of the driving shaft (541), the mounting ring (543) is installed on the mounting groove (542), the fixed blade (544) is installed on the outer side surface of the mounting ring (543), the fixed ring (545) is installed on the inner side surface of the protective shell (51), and the rotating blade (546) is installed on the outer side surface of the fixed ring (545).

10. A conductor splice welding apparatus for cable production as defined in claim 9, characterized in that: The mounting ring (543), the fixed blade (544) and the fixed ring (545) are arranged as fixed parts, the mounting ring (543) and the rotating blade (546) are arranged as rotating parts, the mounting ring (543) in the fixed part and the driving shaft (541) are rotatably installed, and the mounting ring (543) in the rotating part and the driving shaft (541) are fixedly installed.

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