Four-welding-gun device for continuous welding of high-voltage cable

Abstract

The utility model relates to the technical field of welding equipment, in particular to a four-welding-gun device for continuous welding of a high-voltage cable, which comprises a processing table, a welding assembly is arranged on the processing table and is used for welding an aluminum pipe of the high-voltage cable, and the welding assembly comprises a main body assembly and an auxiliary body assembly, arc-shaped grooves are formed in the two ends of the mounting frame; the execution assembly comprises sliding seats slidably mounted at the two ends of the mounting frame, balance rods are slidably mounted at the two ends in the sliding seats in a penetrating mode, a support is fixed between the lower ends of the balance rods at the two ends, and a welding gun is fixed in the support; the transmission assembly comprises two transverse rods arranged in the mounting frame, and the ends of the transverse rods are fixed to the sliding seats; the welding seam position and aluminum pipe deformation are detected through vision and laser, a driving system automatically adjusts the angle and distance of a welding gun, dynamic compensation in the welding process is achieved, it is guaranteed that the welding gun is accurately aligned all the time, aluminum pipe deformation and thermal expansion are effectively adapted, and stable welding quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically a four-welding-gun device for continuous welding of high-voltage cables. Background Technology

[0002] High-voltage cable aluminum tube welding is a key process used in manufacturing the metal sheath of high-voltage power cables. It is mainly used for the continuous cladding welding of aluminum tubes for 110kV and above high-voltage cables and ultra-high-voltage cables. This technology uses methods such as argon arc welding (TIG), laser welding or high-frequency induction welding to weld the longitudinally wrapped aluminum strips into a sealed tubular structure, forming the electromagnetic shielding layer and radial waterproof barrier of the cable, ensuring that the cable has excellent mechanical strength, corrosion resistance and airtightness during long-term operation.

[0003] According to CN222059233U, a cable welding device is disclosed. This technology discloses "a cable welding device, which relates to the field of cable welding. The cable welding device includes a base, an L-shaped plate is fixedly connected to the top of the base, and a welding mechanism is provided at the bottom of the L-shaped plate." It has the technical effect of "by setting a cooling box and a cooling chamber, when the welding head welds two cables, the connecting plate moves downward, driving the pressing plate to move downward, which in turn drives the first moving column to move downward, which in turn squeezes the first spring, which in turn drives the pushing plate to move downward, which in turn pushes the coolant inside the cooling box into the cooling chamber, thereby cooling the cable during the welding process. When the welding of the cable is completed, when the piston rod of the hydraulic cylinder drives the connecting plate to move upward, the first spring drives the pushing plate to return to its original position, thereby drawing the coolant inside the cooling chamber into the cooling box, achieving the purpose of rapidly cooling the welded part of the cable during the welding process."

[0004] The main problems in the existing continuous welding process of high-voltage cable aluminum tubes are: during long-term continuous welding operations, the aluminum tube material undergoes uneven thermal expansion after being heated. At the same time, it is affected by mechanical traction and its own gravity, which easily causes axial displacement, radial deformation and local twisting. This dynamic deformation causes the welding torch to deviate from the preset welding trajectory, making it impossible for the electric arc to be continuously and stably aligned with the weld centerline. In addition, the changes in the oxide layer on the aluminum tube surface and the welding heat-affected zone further exacerbate the difficulty of weld tracking. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a four-welding-gun device for continuous welding of high-voltage cables. By visually and with laser detection of the weld position and aluminum tube deformation, the drive system automatically adjusts the angle and distance of the welding guns to achieve dynamic compensation during the welding process. This ensures that the welding guns are always precisely aligned, effectively adapts to aluminum tube deformation and thermal expansion, and guarantees stable welding quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a four-welding-gun device for continuous welding of high-voltage cables, comprising a processing table, wherein a welding assembly is provided on the processing table for welding aluminum tubes of high-voltage cables, the welding assembly comprising:

[0007] The main component includes a mounting bracket set on the processing table, with arc-shaped grooves opened inside both ends of the mounting bracket;

[0008] The execution component includes slides that are slidably mounted at both ends of the mounting bracket. A balance bar is slidably mounted through both ends of the slide. A bracket is fixed between the lower ends of the balance bars. A welding torch is fixed inside the bracket.

[0009] The transmission assembly includes two crossbars disposed inside the mounting frame, with the ends of the crossbars fixed to the slide. Cams are rotatably mounted at both ends of the crossbars, and the cams are located inside the arc-shaped grooves. An arc-shaped rack is fixed between the two ends of the crossbars. A transmission gear is rotatably mounted in the middle of the inner wall of the mounting frame and meshes with the arc-shaped rack for transmission. A drive gear is rotatably mounted above the inner wall of the crossbars and meshes with the transmission gear for transmission. A drive component is provided on the mounting frame for driving the drive gear.

[0010] Preferably, the actuation component further includes a connecting frame fixed between the upper ends of the two balance bars, and a cylinder is fixed inside the slide to drive the connecting frame.

[0011] Preferably, the execution component further includes fixing rods fixed to both ends of the bracket, a reinforcing frame fixed between the lower ends of the fixing rods, and the reinforcing frame is fixed to the outside of the welding gun.

[0012] Preferably, the welding assembly further includes an infrared temperature sensor fixed on the reinforcement frame and used to monitor the temperature of the high-voltage cable aluminum tube.

[0013] Preferably, the welding assembly further includes a stand fixed to the bottom of the mounting frame, on which an industrial camera and a laser displacement sensor are mounted for angle monitoring.

[0014] Preferably, the driving component includes a motor frame fixed inside the upper part of the mounting bracket, on which a servo motor is fixed and used to drive the drive gear to rotate.

[0015] Preferably, two three-axis modules are mounted on the upper end of the processing table, and welding components are provided on both three-axis modules.

[0016] Beneficial effects

[0017] This invention provides a four-welding-gun device for continuous welding of high-voltage cables. Compared with the prior art, it has the following advantages:

[0018] 1. The weld seam position is identified by an industrial camera, and the deformation of the aluminum tube is detected by a laser displacement sensor. Then, the output of the servo motor drives the drive gear to rotate, which in turn drives the cam on the crossbar to slide along the inside of the arc groove through the arc rack. At the same time, the crossbar drives the welding gun on the slide to rotate, so that when the aluminum tube is slightly deformed or deviates, it can be rotated for fine adjustment to ensure that the welding gun is always aligned with the center of the weld seam and avoid welding defects. Furthermore, since the arc groove and the high-voltage cable aluminum tube are at the same center, the welding gun can always be vertically aligned with the weld seam of the high-voltage cable aluminum tube when it rotates.

[0019] 2. The temperature of the aluminum tube is monitored in real time by an infrared temperature sensor. Then, the output end of the cylinder drives the connecting frame and the bracket to move the welding torch. The distance between the welding torch and the high-voltage cable aluminum tube is finely adjusted to adapt to changes in pipe diameter or thermal expansion, and to prevent thermal expansion from affecting the weld quality. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the front structure of the welding assembly in this utility model;

[0022] Figure 3 This is a schematic diagram of the structure on the back of the welding assembly in this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the mounting bracket in this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the execution component in this utility model.

[0025] In the diagram: 1. Machining table; 2. Three-axis module; 3. Welding assembly; 31. Main body assembly; 311. Mounting bracket; 312. Arc groove; 32. Actuation assembly; 321. Slide; 322. Balance bar; 323. Bracket; 324. Welding torch; 325. Connecting frame; 326. Cylinder; 327. Fixing rod; 328. Reinforcing frame; 33. Transmission assembly; 331. Crossbar; 332. Cam; 333. Arc rack; 334. Transmission gear; 335. Drive gear; 336. Drive component; 3361. Motor frame; 3362. Servo motor; 34. Stand; 35. Industrial camera; 36. Laser displacement sensor; 37. Infrared temperature sensor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a four-welding-gun device for continuous welding of high-voltage cables, including a processing table 1, on which a welding assembly 3 is provided for welding aluminum tubes of high-voltage cables, the welding assembly 3 including:

[0028] The main component 31 includes a mounting bracket 311 set on the processing table 1, and arc-shaped grooves 312 are opened inside both ends of the mounting bracket 311;

[0029] The execution component 32 includes a slide block 321 that is slidably mounted on both ends of the mounting bracket 311. A balance bar 322 is slidably mounted through both ends of the slide block 321. A bracket 323 is fixed between the lower ends of the balance bars 322. A welding torch 324 is fixed inside the bracket 323.

[0030] The transmission assembly 33 includes two crossbars 331 disposed inside the mounting bracket 311, with the ends of the crossbars 331 fixed to the slide block 321. Cams 332 are rotatably mounted on both ends of the crossbars 331, and the cams 332 are located inside the arc-shaped groove 312. An arc-shaped rack 333 is fixed between the two ends of the crossbars 331. A transmission gear 334 is rotatably mounted in the middle of the inner wall of the mounting bracket 311 and meshes with the arc-shaped rack 333 for transmission. A drive gear 335 is rotatably mounted on the upper part of the inner wall of the crossbars 331 and meshes with the transmission gear 334 for transmission. A drive component 336 is provided on the mounting bracket 311 for driving the drive gear 335.

[0031] In this embodiment, the output end of the servo motor 3362 drives the drive gear 335 to rotate the transmission gear 334. The transmission gear 334 drives the cam 332 on the crossbar 331 to slide along the inside of the arc groove 312 through the arc rack 333. At the same time, the crossbar 331 drives the welding torch 324 on the slide block 321 to rotate, so that when the aluminum tube is slightly deformed or deviates, it can be rotated for fine adjustment. Furthermore, since the arc groove 312 and the high-voltage cable aluminum tube are at the same center, the welding torch 324 can always be vertically aligned with the weld seam of the high-voltage cable aluminum tube when it rotates.

[0032] Specifically, the actuator 32 also includes a connecting frame 325 fixed between the upper ends of the balance bars 322 at both ends, and a cylinder 326 is fixed inside the slide block 321 for driving the connecting frame 325.

[0033] In this embodiment, the output end of the cylinder 326 drives the connecting frame 325 to cooperate with the bracket 323 to move the welding torch 324, so as to finely adjust the distance between the welding torch 324 and the high-voltage cable aluminum pipe to adapt to changes in pipe diameter or thermal expansion.

[0034] Specifically, the execution component 32 also includes fixing rods 327 fixed at both ends of the bracket 323, and a reinforcing frame 328 is fixed between the lower ends of the fixing rods 327 at both ends, and the reinforcing frame 328 is fixed to the outside of the welding torch 324.

[0035] In this embodiment, the lower end of the welding gun 324 is fixed by the fixing rod 327 in conjunction with the reinforcement frame 328, thereby improving the stability of the welding gun 324 and ensuring accurate welding trajectory.

[0036] Specifically, the welding assembly 3 also includes an infrared temperature sensor 37 fixed on the reinforcing frame 328 and used to monitor the temperature of the high-voltage cable aluminum tube.

[0037] In this embodiment, the temperature of the aluminum tube is monitored in real time by an infrared temperature sensor 37, and the distance of the welding torch 324 is automatically adjusted based on the temperature data to prevent thermal expansion from affecting the quality of the weld.

[0038] Specifically, the welding assembly 3 also includes a stand 34 fixed to the bottom of the mounting bracket 311, on which an industrial camera 35 and a laser displacement sensor 36 are mounted for angle monitoring.

[0039] In this embodiment, the weld position is identified by an industrial camera 35 and the deformation of the aluminum tube is detected by a laser displacement sensor 36, ensuring that the welding torch is always aligned with the center of the weld and avoiding welding defects.

[0040] Specifically, the drive component 336 includes a motor frame 3361 fixed inside the upper end of the mounting bracket 311, on which a servo motor 3362 is fixed and used to drive the drive gear 335 to rotate.

[0041] In this embodiment, the welding guns 324 at both ends of the mounting bracket 311 are a DC welding machine and an AC welding machine, respectively. The DC welding machine and the AC welding machine need to act on the weld seam of the high-voltage cable aluminum pipe at the same time. The DC welding machine welds the strip to a certain depth, while the AC welding machine welds the strip surface to achieve a beautiful weld seam.

[0042] Specifically, two three-axis modules 2 are installed on the upper end of the processing table 1, and welding components 3 are provided on both three-axis modules 2.

[0043] In this embodiment, the welding components 3 on the two triaxial modules 2 are switched to work. Since the high-voltage cable aluminum tube needs to be connected to the outer sheath extruder when using the smooth aluminum tube process, the equipment cannot be stopped. However, long-term welding will cause the tungsten electrode to burn out, affecting the welding quality. After the welding component 3 on the second triaxial module 2 starts working, the welding component 3 on the first triaxial module 2 stops working and the tungsten electrode is re-polished and reinstalled to achieve continuous welding without stopping the machine.

[0044] The working principle and usage process of this utility model are as follows: First, the weld position is identified by an industrial camera 35, and the deformation of the aluminum tube is detected by a laser displacement sensor 36. Then, the output end of the servo motor 3362 drives the drive gear 335 to rotate the transmission gear 334. The transmission gear 334 drives the cam 332 on the crossbar 331 to slide along the inside of the arc groove 312 through the arc rack 333. At the same time, the crossbar 331 drives the welding gun 324 on the slide block 321 to rotate, so that when the aluminum tube is slightly deformed or deviates, it can be rotated for fine adjustment to ensure that the welding gun is always aligned with the center of the weld and avoid welding defects. Furthermore, since the arc groove 312 and the high-voltage cable aluminum tube are at the same center, the welding gun 324 can always be vertically aligned with the weld of the high-voltage cable aluminum tube when it rotates.

[0045] Then, the temperature of the aluminum tube is monitored in real time by the infrared temperature sensor 37, and the output end of the cylinder 326 drives the connecting frame 325 to cooperate with the bracket 323 to move the welding gun 324. The distance between the welding gun 324 and the high-voltage cable aluminum tube is finely adjusted to adapt to changes in pipe diameter or thermal expansion, and to prevent thermal expansion from affecting the weld quality.

[0046] Furthermore, the welding guns 324 at both ends of the mounting bracket 311 are a DC welding machine and an AC welding machine, respectively. The DC welding machine and the AC welding machine need to act on the weld seam of the high-voltage cable aluminum pipe at the same time. The DC welding machine welds the strip to a deeper penetration depth, while the AC welding machine welds the strip surface to achieve a beautiful weld seam.

[0047] Additionally, the welding components 3 on the two triaxial modules 2 are switched for operation. Since the high-voltage cable aluminum tube needs to be connected to the outer sheath extruder for simultaneous use when using the smooth aluminum tube process, the equipment cannot be stopped. However, prolonged welding will cause the tungsten electrode to burn out, affecting the welding quality. After the welding component 3 on the second triaxial module 2 starts working, the welding component 3 on the first triaxial module 2 stops working, and the tungsten electrode is re-polished and reinstalled to achieve continuous welding without stopping the machine.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A four-welding-gun device for continuous welding of high-voltage cables, comprising a processing table (1), characterized in that: The processing table (1) is equipped with a welding assembly (3) for welding high-voltage cable aluminum tubes. The welding assembly (3) includes: The main component (31) includes a mounting bracket (311) set on the processing table (1), and arc-shaped grooves (312) are provided inside both ends of the mounting bracket (311); The execution component (32) includes a slide block (321) slidably mounted on both ends of the mounting bracket (311). A balance bar (322) is slidably mounted through both ends of the slide block (321). A bracket (323) is fixed between the lower ends of the balance bars (322) at both ends. A welding torch (324) is fixed inside the bracket (323). The transmission assembly (33) includes two crossbars (331) disposed inside the mounting bracket (311), and the ends of the crossbars (331) are fixed to the slide (321). Cams (332) are rotatably mounted on both ends of the crossbars (331), and the cams (332) are located inside the arc groove (312). An arc rack (333) is fixed between the two crossbars (331). A transmission gear (334) is rotatably mounted in the middle of the inner wall of the mounting bracket (311) and meshes with the arc rack (333) for transmission. A drive gear (335) is rotatably mounted on the upper part of the inner wall of the crossbars (331) and meshes with the transmission gear (334) for transmission. A drive component (336) is provided on the mounting bracket (311) for driving the drive gear (335).

2. The four-welding-gun device for continuous welding of high-voltage cables according to claim 1, characterized in that: The actuator (32) also includes a connecting frame (325) fixed between the upper ends of the balance bars (322) at both ends, and a cylinder (326) is fixed inside the slide (321) for driving the connecting frame (325).

3. The four-welding-gun device for continuous welding of high-voltage cables according to claim 1, characterized in that: The execution component (32) also includes fixing rods (327) fixed at both ends of the bracket (323), and a reinforcing frame (328) is fixed between the lower ends of the fixing rods (327) at both ends, and the reinforcing frame (328) is fixed to the outside of the welding gun (324).

4. The four-welding-gun device for continuous welding of high-voltage cables according to claim 1, characterized in that: The welding assembly (3) also includes an infrared temperature sensor (37) fixed on the reinforcing frame (328) and used to monitor the temperature of the high-voltage cable aluminum tube.

5. The four-welding-gun device for continuous welding of high-voltage cables according to claim 1, characterized in that: The welding assembly (3) also includes a stand (34) fixed to the bottom of the mounting bracket (311), on which an industrial camera (35) and a laser displacement sensor (36) are mounted for angle monitoring.

6. The four-welding-gun device for continuous welding of high-voltage cables according to claim 1, characterized in that: The drive component (336) includes a motor frame (3361) fixed inside the upper end of the mounting bracket (311), and a servo motor (3362) is fixed on the motor frame (3361) for driving the drive gear (335) to rotate.

7. The four-welding-gun device for continuous welding of high-voltage cables according to claim 1, characterized in that: The processing table (1) has two three-axis modules (2) installed on its upper end, and each of the two three-axis modules (2) is equipped with a welding assembly (3).

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