Multi-angle adjustable double-wire welding gun structure and welding device

Abstract

The utility model provides a kind of multi-angle adjustment's double wire feeding welding torch structure and welding device, it is related to welding technical field, including fixed pedestal, the fixed pedestal is provided with welding wire reel, wire feeder, welding torch and wire feeding pipe, the welding wire reel is provided with at least two;The wire feeder is provided with at least two;The welding torch includes gun body and rotationally arranged gun head assembly in the end of the gun body, the rotation axis of the gun head assembly is perpendicular to the axial direction of the gun body;The gun head assembly is used to fix tungsten electrode;The wire feeding pipe is provided with at least two, and the wire feeding pipe is fixedly connected with the gun head assembly by adjusting mechanism;The present application can realize double wire feeding welding, significantly improve welding speed and improve surfacing quality, also improve the flexibility of welding torch and the application range of different shape workpieces.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a dual-wire feeding welding gun structure with multi-angle adjustment and a welding device. Background Technology

[0002] Current ball valve surfacing welding primarily employs a single tungsten electrode single-wire welding torch, with welding speeds typically ranging from 130 mm / min to 300 mm / min, resulting in low welding efficiency. Furthermore, the ball valve surface is a curved surface, requiring adjustment of the welding torch angle during the surfacing process to match its shape. While the welding torch is usually attached to a multi-degree-of-freedom robotic arm, allowing for angle adjustment, its length makes it prone to interference between the torch and the ball valve, leading to unreachable torch tips. Once this occurs, repeated adjustments to the robotic arm's posture are necessary to align the torch tip with the target area, significantly impacting welding efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a multi-angle adjustable dual-wire welding torch structure and welding device to solve the problems existing in the prior art. It can realize dual-wire welding, significantly improve welding speed and weld quality, and also improve the flexibility of the welding torch and its applicability to workpieces of different shapes.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] A multi-angle adjustable dual-wire-feed welding torch structure includes a fixed base, on which a welding wire spool, a wire feeder, a welding torch, and wire feed tubes are disposed. At least two welding wire spools are provided; at least two wire feeders are provided; the welding torch includes a torch body and a torch head assembly rotatably disposed at the end of the torch body, the rotation axis of the torch head assembly being perpendicular to the axial direction of the torch body; the torch head assembly is used to fix a tungsten electrode; at least two wire feed tubes are provided, and the wire feed tubes are fixedly connected to the torch head assembly via an adjustment mechanism.

[0006] In one embodiment, the gun head assembly includes a gun head body and an insulating sleeve. The gun head body is rotatably connected to the end of the gun body. The gun head body has a first channel, one end of which is threadedly connected to a tungsten electrode locking bolt, and the other end is fixedly connected to a gas lens. The gas lens has a second channel coaxially connected to the first channel. The second channel has an annular conical surface at one end near the tungsten electrode locking bolt, and the other end is for the tungsten electrode to pass through. A tungsten electrode clamp for clamping the tungsten electrode is provided in the first channel. One end of the tungsten electrode clamp abuts against the end of the tungsten electrode locking bolt, and the other end is divided into multiple spaced clamping flaps along the circumference. The ends of the clamping flaps abut against the annular conical surface. A ceramic nozzle is also fixed to the outside of the gas lens. The insulating sleeve is sleeved on the gun head body, and the adjustment mechanism is detachably connected to the insulating sleeve.

[0007] In one embodiment, the gun body includes an outer cylinder, a connecting seat, and a protective gas tube disposed inside the outer cylinder. The connecting seat is fixed to the end of the outer cylinder and has a first connecting lug and a second connecting lug. The first connecting lug has a first through hole, and the second connecting lug has an internally threaded hole coaxial with the first through hole. The gun head body has a second through hole, and a fastening bolt passes through the first through hole, the second through hole, and is threadedly connected to the internally threaded hole. The connecting seat has a countersunk hole along the axial direction of the protective gas tube, and the countersunk hole communicates with the first through hole. One end of the protective gas tube is exposed from the outer cylinder for connecting to a protective gas source, and the other end communicates with the countersunk hole. The diameter of the fastening bolt is smaller than the diameter of the first through hole and the diameter of the second through hole. The outer circumferential wall of the fastening bolt forms a third channel between the inner wall of the first through hole and the inner wall of the second through hole for the protective gas to flow into the gun head body, and the third channel communicates with the first channel.

[0008] As one embodiment, the outer cylinder is further provided with a cooling medium inlet pipe and a cooling medium return pipe. The end of the outer cylinder has a water-cooling block. The end of the cooling medium inlet pipe and the end of the cooling medium return pipe are both connected and fixed to the water-cooling block. A cooling medium receiving cavity is formed between the water-cooling block and the connecting seat. The cooling medium inlet pipe and the cooling medium return pipe are both connected to the cooling medium receiving cavity.

[0009] In one embodiment, the cooling medium inlet pipe, the cooling medium return pipe, the water-cooled block, and the connector are all made of metal; the end of the cooling medium inlet pipe away from the water-cooled block and the end of the cooling medium return pipe away from the water-cooled block are used to connect to the power supply circuit.

[0010] In one embodiment, the adjusting mechanism includes a connecting plate, a connecting block, a first slider, a second slider, and a tube clamp. The connecting plate is connected to the insulating sleeve. The first slider is disposed on the connecting plate, and the second slider is rotatably connected to the tube clamp. The tube clamp is used to fix the wire feeding tube. The connecting block has a first sliding groove and a second sliding groove that are perpendicular to each other. The first sliding groove and the second sliding groove are slidably engaged with the first slider and the second slider, respectively. A first end plate and a second end plate are fixedly fixed to the ends of the first sliding groove and the second sliding groove, respectively. The first end plate and the second end plate are both fixedly connected to the connecting block. A first adjusting bolt and a second adjusting bolt are rotatably disposed on the first end plate and the second end plate, respectively. The first adjusting bolt and the second adjusting bolt are threadedly connected to the first slider and the second slider, respectively.

[0011] As one embodiment, both the first slide and the second slide are dovetail grooves.

[0012] In one embodiment, the connecting block further includes a connecting block body, a first adjusting block, and a second adjusting block. One end of the first adjusting block is connected to the connecting block body, and the other end has a first gap with the connecting block body. One sidewall of the first adjusting block serves as the groove wall of the first sliding groove and slides in contact with the first slider. The other sidewall of the first adjusting block has a second gap with the connecting block body. The connecting block body is provided with a first adjusting screw hole, and a third adjusting bolt is internally threaded into the first adjusting screw hole. The end of the third adjusting bolt extends into the second gap and abuts against the sidewall of the first adjusting block. One end of the second adjusting block is connected to the connecting block body, and the other end has a third gap with the connecting block body. One sidewall of the second adjusting block serves as the groove wall of the second sliding groove and slides in contact with the second slider. The other sidewall of the second adjusting block has a fourth gap with the connecting block body. The connecting block body is provided with a second adjusting screw hole, and a fourth adjusting bolt is internally threaded into the second adjusting screw hole. The end of the fourth adjusting bolt extends into the fourth gap and abuts against the sidewall of the second adjusting block.

[0013] In one embodiment, the outer cylinder is connected to the fixed base via a flange.

[0014] This utility model also provides a welding device, including the above-described multi-angle adjustable double wire feeding welding gun structure.

[0015] This utility model has the following technical advantages over the prior art:

[0016] 1. This utility model enables double-wire welding by setting two wire reels, two wire feeders and two wire feeding tubes on a fixed base. During welding, the two wires melt simultaneously, which can improve the deposition rate. It is especially suitable for welding scenarios with large thickness or large area, and can significantly improve the welding speed and greatly shorten the welding time.

[0017] 2. In this utility model, the gun head assembly can rotate along a pivot perpendicular to the gun body axis, allowing the gun head assembly to be adjusted at multiple angles, improving the flexibility of the welding gun and its applicability to workpieces of different shapes. Compared with the traditional method of adjusting the entire welding gun to adjust the gun head assembly, the direct adjustment of the gun head assembly in this utility model is more convenient, can shorten the angle adjustment time of the gun head assembly, and is conducive to improving welding efficiency.

[0018] The other technical solutions of this utility model have the following technical effects compared with the prior art:

[0019] This invention ensures the input of protective gas to the gun head body while allowing the gun head body to rotate, thus guaranteeing the normal operation of the welding process under the protection of the protective gas. Furthermore, the protective gas flow channels are all located inside the outer cylinder, connecting seat, and gun head body, with no exposed pipelines, avoiding the risk of gas leakage caused by easily damaged exposed pipelines. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a multi-angle adjustable dual wire feeding welding gun structure in one embodiment of the present invention.

[0022] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0023] Figure 3 This is a schematic diagram of the adjusting mechanism in one embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of the welding torch from one angle in one embodiment of the present invention.

[0025] Figure 5 for Figure 4 A magnified view of a portion of region B in the middle;

[0026] Figure 6 This is a cross-sectional view of the welding torch from another angle in one embodiment of the present invention;

[0027] Figure 7 for Figure 6 A magnified view of a portion of region C in the middle;

[0028] Figure 8 This is a schematic diagram of the connecting seat in one embodiment of the present invention;

[0029] Figure 9 for Figure 8 A schematic diagram of the sectional view.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Fixed base;

[0032] 2. Welding wire spool;

[0033] 3. Wire feeder;

[0034] 4. Welding torch;

[0035] 41. Gun body; 411. Outer cylinder; 412. Connecting seat; 4121. First connecting lug; 4122. Second connecting lug; 4123. Countersunk hole; 413. Protective gas pipe; 414. Fastening bolt; 415. Cooling medium inlet pipe; 416. Cooling medium return pipe; 417. Water cooling block; 418. Cooling medium receiving cavity;

[0036] 42. Head assembly; 421. Head body; 422. Insulating sleeve; 423. Tungsten electrode locking bolt; 424. Gas lens; 425. Tungsten electrode clip; 426. Ceramic nozzle;

[0037] 43. Flange;

[0038] 5. Adjustment mechanism; 51. Connecting plate; 52. Connecting block; 53. First slider; 54. Second slider; 55. First adjusting bolt; 56. Second adjusting bolt; 57. Pipe clamp; 58. First adjusting screw hole; 59. Second adjusting screw hole; 510. First adjusting block;

[0039] 6. Wire feeding tube;

[0040] 7. Tungsten electrode. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0042] The purpose of this invention is to provide a multi-angle adjustable dual-wire welding torch structure and welding device to solve the problems existing in the prior art. It can realize dual-wire welding, significantly improve welding speed and weld quality, and also improve the flexibility of the welding torch and its applicability to workpieces of different shapes.

[0043] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Example 1:

[0045] like Figures 1-9 As shown, this embodiment provides a multi-angle adjustable dual-wire-feed welding torch structure, including a fixed base 1, which is typically connected to a multi-degree-of-freedom robotic arm. The fixed base 1 is equipped with a welding wire spool 2, a wire feeder 3, a welding torch 4, and a wire feeding tube 6. The number of welding wire spools 2, wire feeders 3, and wire feeding tubes 6 is the same, with at least two of each; typically, only two of each can be provided to meet the requirements of dual wire feeding. The welding torch 4 includes a torch body 41 and a torch head assembly 42 rotatably disposed at the end of the torch body 41. The torch head assembly 42 is used to clamp a tungsten electrode 7, and the rotation axis of the torch head assembly 42 is perpendicular to the axial direction of the torch body 41, allowing the torch head assembly 42 to rotate. The wire feeding tube 6 is fixedly connected to the torch head assembly 42 via an adjustment mechanism 5.

[0046] This embodiment achieves dual-wire welding by setting two wire reels 2, two wire feeders 3, and two wire feeding tubes 6 on the fixed base 1. During welding, both wires melt simultaneously, increasing the deposition rate. This is particularly suitable for welding thick or large-area surfaces, significantly improving welding speed and greatly shortening welding time. While single-wire welding speed is typically 130mm / min-300mm / min, the dual-wire welding torch structure in this embodiment can reach speeds of 300mm / min-400mm / min. Furthermore, the torch head assembly 42 can rotate along an axis perpendicular to the torch body 41, allowing for multi-angle adjustment. This enhances the flexibility of the welding torch 4 and its applicability to workpieces of different shapes. Compared to traditional methods that adjust the entire welding torch 4 to adjust the torch head assembly 42, this embodiment allows for direct adjustment of the torch head assembly 42, which is more convenient, shortens the angle adjustment time, and improves welding efficiency.

[0047] like Figure 2 , Figure 5 As shown, in this embodiment, the gun head assembly 42 includes a gun head body 421 and an insulating sleeve 422. The gun head body 421 is rotatably connected to the end of the gun body 41. A first channel is provided in the gun head body 421. One end of the first channel is threadedly connected to a tungsten electrode locking bolt 423, and the other end is fixedly connected to a gas lens 424. The gas lens 424 has a second channel coaxially connected to the first channel. One end of the second channel near the tungsten electrode locking bolt 423 has an annular conical surface, and the other end is for the tungsten electrode 7 to pass through. Along the direction in which the tungsten electrode 7 passes through, the diameter of the annular conical surface gradually decreases. A tungsten electrode clamp 425 for clamping the tungsten electrode 7 is provided in the first channel. One end of the tungsten electrode clamp 425 abuts against the end of the tungsten electrode locking bolt 423, and the other end is divided into multiple spaced clamping petals along the circumferential direction. The ends of the clamping petals abut against the annular conical surface. After placing the tungsten electrode 7 into the tungsten electrode clamp 425, tightening the locking bolt presses the tungsten electrode clamp 425 against the annular conical surface. The clamping flaps, limited by the annular conical surface, clamp the tungsten electrode 7, thus fixing it in place. After the tungsten electrode 7 is clamped and fixed, a portion of the clamping flaps remains exposed outside the gas lens 424, and / or the clamping flaps are located at a certain distance from the inner wall of the gas lens 424, with a certain gap between adjacent clamping flaps. A ceramic nozzle 426 is also fixed to the outer side of the gas lens 424. In use, protective gas is introduced into the first channel. The protective gas enters the second channel along the first channel and the gap between adjacent clamping flaps, and slowly flows out from around the tungsten electrode 7, providing gas protection to the welding area. The ceramic nozzle further prevents air from entering, ensuring welding quality. Simultaneously, multiple gas dispersion holes can be provided on the side wall of the gas lens 424, which can appropriately expand the distribution range of the protective gas within the ceramic nozzle.

[0048] Since the torch body 421 becomes electrified during the welding process, in order to prevent the adjustment mechanism 5 from conducting electricity, an insulating sleeve 422 is also provided on the torch body 421 in this embodiment. The adjustment mechanism 5 and the insulating sleeve 422 are detachably connected.

[0049] like Figures 6-9 As shown, in this embodiment, the gun body 41 includes an outer cylinder 411, a connecting seat 412, and a protective air tube 413 disposed inside the outer cylinder 411. The connecting seat 412 is fixed to the end of the outer cylinder 411. The connecting seat 412 has a first connecting ear 4121 and a second connecting ear 4122 facing each other. The first connecting ear 4121 is provided with a first through hole, and the second connecting ear 4122 is provided with an internally threaded hole coaxial with the first through hole. The gun head body 421 is disposed between the first connecting ear 4121 and the second connecting ear 4122. The gun head body 421 is provided with a second through hole, and a fastening bolt 414 passes through the first through hole, the second through hole, and is threadedly connected to the internally threaded hole. Loosening the fastening bolt 414 can adjust the angle of the gun head body 421. After adjustment, tightening the fastening bolt 414 is sufficient. A countersunk hole 4123 is provided on the connecting seat 412 along the axial direction of the protective gas tube 413, and the countersunk hole 4123 communicates with the first through hole. One end of the protective gas tube 413 is exposed from the outer cylinder 411 for connecting to the protective gas source, and the other end communicates with the countersunk hole 4123. The diameter of the fastening bolt 414 is smaller than the diameter of the first through hole and the diameter of the second through hole. The outer circumference of the fastening bolt 414 forms a third channel between the inner wall of the first through hole and the inner wall of the second through hole, allowing the protective gas to flow into the gun head body 421. The third channel communicates with the first channel. In use, the protective gas enters the countersunk hole 4123 and the first through hole inside the connecting seat 412 through the protective gas tube 413. Since the inner diameter of the fastening bolt 414 is smaller than the first through hole and the second through hole, the gas can enter the first channel through the gap between the fastening bolt 414 and the first through hole and the second through hole (i.e., the third channel), and finally flow out from around the tungsten electrode 7 through the second channel. Therefore, this embodiment ensures the input of protective gas to the gun head body 421 while allowing the gun head body 421 to rotate, thus ensuring that the welding process can proceed normally under the protection of the protective gas. Moreover, the protective gas flow channels are all located inside the outer cylinder 411, the connecting seat 412, and the gun head body 421, with no exposed pipes, avoiding the risk of gas leakage due to easily damaged exposed pipes.

[0050] It should be noted that although there are certain gaps between the nozzle body 421 and the first connecting ear 4121 and the second connecting ear 4122, these gaps will cause a small amount of leakage of protective gas, but will not affect the flow of most of the gas into the nozzle body 421.

[0051] like Figure 4As shown, in this embodiment, a cooling medium inlet pipe 415 and a cooling medium return pipe 416 are also provided inside the outer cylinder 411. A water-cooling block 417 is located at the end of the outer cylinder 411. The ends of the cooling medium inlet pipe 415 and the cooling medium return pipe 416 are both connected and fixed to the water-cooling block 417. A cooling medium receiving cavity 418 is formed between the water-cooling block 417 and the connecting seat 412. The cooling medium inlet pipe 415 and the cooling medium return pipe 416 are both connected to the cooling medium receiving cavity 418. In this embodiment, a low-conductivity liquid cooling medium is used, such as deionized water or fluorinated liquid. In this embodiment, the cooling medium inlet pipe 415, the cooling medium return pipe 416, the water-cooling block 417, and the connecting seat 412 are all made of metal. The cooling medium can cool the connecting seat 412, thereby cooling the gun head assembly 42 through heat conduction. The ends of the cooling medium inlet pipe 415 and the cooling medium return pipe 416 that are furthest from the water-cooled block 417 are used to connect to the power supply circuit. Specifically, the cooling medium inlet pipe 415 and the cooling medium return pipe 416 can both be copper pipes.

[0052] like Figure 2 , Figure 3 As shown, in this embodiment, the adjusting mechanism 5 includes a connecting plate 51, a connecting block 52, a first slider 53 and a second slider 54, and a pipe clamp 57. The connecting plate 51 is connected to the insulating sleeve 422. The first slider 53 is provided on the connecting plate 51. The second slider 54 is rotatably connected to the pipe clamp 57, which is used to fix the wire feeding tube 6. The connecting block 52 is provided with a first sliding groove and a second sliding groove that are perpendicular to each other. The first sliding groove and the second sliding groove are slidably engaged with the first slider 53 and the second slider 54, respectively. The ends of the first sliding groove and the second sliding groove are respectively fixed with a first end plate and a second end plate. The first end plate and the second end plate are both fixedly connected to the connecting block 52. The first adjusting bolt 55 and the second adjusting bolt 56 are respectively rotatably provided on the first end plate and the second end plate. The first adjusting bolt 55 and the second adjusting bolt 56 are respectively threadedly connected to the first slider 53 and the second slider 54. By turning the first adjusting bolt 55, the connecting block 52 (because the first slider 53 is fixed on the gun head assembly 42, the first slider 53 does not move, and the connecting block 52 moves relative to the first slider 53) and the second slider 54 can move synchronously; by turning the second adjusting bolt 56, the second slider 54 and the tube clamp 57 can move, and the tube clamp 57 can rotate, thereby realizing multi-dimensional adjustment of the position of the wire feeding tube 6.

[0053] In this embodiment, both the first and second slides are dovetail grooves.

[0054] In this embodiment, the connecting block 52 further includes a connecting block 52 body, a first adjusting block 510, and a second adjusting block. One end of the first adjusting block 510 is connected to the connecting block 52 body, and the other end has a first gap with the connecting block 52 body. One side wall of the first adjusting block 510 serves as the groove wall of the first sliding groove and slides in contact with the first slider 53. The other side wall of the first adjusting block 510 has a second gap with the connecting block 52 body. A first adjusting screw hole 58 is provided on the connecting block 52 body, and a third adjusting bolt is internally threaded into the first adjusting screw hole 58. The end of the second adjusting block extends into the second gap and abuts against the side wall of the first adjusting block 510; one end of the second adjusting block is connected to the body of the connecting block 52, and the other end has a third gap with the body of the connecting block 52. One side wall of the second adjusting block serves as the groove wall of the second sliding groove and slides in contact with the second slider 54. The other side wall of the second adjusting block has a fourth gap with the body of the connecting block 52. The body of the connecting block 52 is provided with a second adjusting screw hole 59, and the second adjusting screw hole 59 is internally threaded with a fourth adjusting bolt. The end of the fourth adjusting bolt extends into the fourth gap and abuts against the side wall of the second adjusting block. After long-term use, wear will inevitably occur between the first slider 53 and the first sliding groove, and between the second slider 54 and the second sliding groove. Taking the fit between the first slider 53 and the first sliding groove as an example, if excessive wear occurs, the size of the first sliding groove increases or the size of the first slider 53 decreases, and the connecting block 52 may wobble. At this point, turning the third adjusting bolt inward will cause the first adjusting block 510 to deform slightly and move towards the first slider 53, compensating for the gap between the first slide groove and the first slider 53, thus reducing the gap and making the sliding process of the connecting block 52 more stable. The fourth adjusting bolt is used in the same way as the third adjusting bolt.

[0055] In this embodiment, the outer cylinder 411 is connected to the fixed base 1 via flange 43.

[0056] Example 2:

[0057] This embodiment provides a welding device, including the multi-angle adjustable double wire feeding welding gun 4 structure of Embodiment 1.

[0058] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0059] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A multi-angle adjustable dual-wire feeding welding torch structure, characterized in that, Includes a fixed base, on which are provided: At least two welding wire spools are provided; A wire feeder, wherein at least two wire feeders are provided; A welding torch, comprising a torch body and a torch head assembly rotatably disposed at the end of the torch body, wherein the rotation axis of the torch head assembly is perpendicular to the axial direction of the torch body; the torch head assembly is used to fix a tungsten electrode. And wire feeding tubes, of which at least two are provided, and the wire feeding tubes are fixedly connected to the gun head assembly through an adjustment mechanism.

2. The multi-angle adjustable dual-wire feeding welding gun structure according to claim 1, characterized in that, The gun head assembly includes: The gun head body is rotatably connected to the end of the gun body. A first channel is provided in the gun head body. One end of the first channel is threadedly connected to a tungsten electrode locking bolt, and the other end is fixedly connected to a gas lens. The gas lens has a second channel coaxially connected to the first channel. One end of the second channel near the tungsten electrode locking bolt has an annular conical surface, and the other end allows the tungsten electrode to pass through. A tungsten electrode clamp is provided in the first channel for clamping the tungsten electrode. One end of the tungsten electrode clamp abuts against the end of the tungsten electrode locking bolt, and the other end is divided into multiple spaced clamping flaps along the circumference. The ends of the clamping flaps abut against the annular conical surface. A ceramic nozzle is also fixed to the outside of the gas lens. And an insulating sleeve, which is fitted onto the gun head body, and the adjusting mechanism is detachably connected to the insulating sleeve.

3. The multi-angle adjustable dual-wire feeding welding gun structure according to claim 2, characterized in that, The gun body includes an outer cylinder, a connecting seat, and a protective gas tube disposed inside the outer cylinder. The connecting seat is fixed to the end of the outer cylinder and has a first connecting lug and a second connecting lug. The first connecting lug has a first through hole, and the second connecting lug has an internally threaded hole coaxial with the first through hole. The gun head body has a second through hole, and a fastening bolt passes through the first through hole, the second through hole, and is threadedly connected to the internally threaded hole. The connecting seat has a countersunk hole along the axial direction of the protective gas tube, and the countersunk hole communicates with the first through hole. One end of the protective gas tube is exposed from the outer cylinder for connecting to a protective gas source, and the other end communicates with the countersunk hole. The diameter of the fastening bolt is smaller than the diameter of the first through hole and the diameter of the second through hole. The outer circumference of the fastening bolt forms a third channel between the inner wall of the first through hole and the inner wall of the second through hole, allowing the protective gas to flow into the gun head body. The third channel communicates with the first channel.

4. The multi-angle adjustable dual-wire feeding welding gun structure according to claim 3, characterized in that, The outer cylinder is also provided with a cooling medium inlet pipe and a cooling medium return pipe. The end of the outer cylinder has a water-cooling block. The end of the cooling medium inlet pipe and the end of the cooling medium return pipe are both connected and fixed to the water-cooling block. A cooling medium receiving cavity is formed between the water-cooling block and the connecting seat. The cooling medium inlet pipe and the cooling medium return pipe are both connected to the cooling medium receiving cavity.

5. The multi-angle adjustable dual-wire feeding welding gun structure according to claim 4, characterized in that, The cooling medium inlet pipe, the cooling medium return pipe, the water-cooled block, and the connector are all made of metal. The ends of the cooling medium inlet pipe and the cooling medium return pipe that are away from the water-cooled block are used to connect to the power supply circuit.

6. The multi-angle adjustable dual-wire feeding welding gun structure according to any one of claims 2 to 5, characterized in that, The adjusting mechanism includes a connecting plate, a connecting block, a first slider, a second slider, and a tube clamp. The connecting plate is connected to the insulating sleeve. The first slider is disposed on the connecting plate, and the second slider is rotatably connected to the tube clamp. The tube clamp is used to fix the wire feeding tube. The connecting block has a first sliding groove and a second sliding groove that are perpendicular to each other. The first sliding groove and the second sliding groove are slidably engaged with the first slider and the second slider, respectively. A first end plate and a second end plate are fixed to the ends of the first sliding groove and the second sliding groove, respectively. The first end plate and the second end plate are both fixedly connected to the connecting block. A first adjusting bolt and a second adjusting bolt are rotatably disposed on the first end plate and the second end plate, respectively. The first adjusting bolt and the second adjusting bolt are threadedly connected to the first slider and the second slider, respectively.

7. The multi-angle adjustable dual-wire feeding welding gun structure according to claim 6, characterized in that, Both the first and second slides are dovetail grooves.

8. The multi-angle adjustable dual-wire feeding welding gun structure according to claim 7, characterized in that, The connecting block further includes a connecting block body, a first adjusting block, and a second adjusting block. One end of the first adjusting block is connected to the connecting block body, and the other end has a first gap with the connecting block body. One sidewall of the first adjusting block serves as the groove wall of the first sliding groove and slides in contact with the first slider. The other sidewall of the first adjusting block has a second gap with the connecting block body. The connecting block body is provided with a first adjusting screw hole, and a third adjusting bolt is internally threaded into the first adjusting screw hole. The end of the third adjusting bolt extends into the second gap and abuts against the sidewall of the first adjusting block. One end of the second adjusting block is connected to the connecting block body, and the other end has a third gap with the connecting block body. One sidewall of the second adjusting block serves as the groove wall of the second sliding groove and slides in contact with the second slider. The other sidewall of the second adjusting block has a fourth gap with the connecting block body. The connecting block body is provided with a second adjusting screw hole, and a fourth adjusting bolt is internally threaded into the second adjusting screw hole. The end of the fourth adjusting bolt extends into the fourth gap and abuts against the sidewall of the second adjusting block.

9. The multi-angle adjustable dual-wire feeding welding gun structure according to claim 3, characterized in that, The outer cylinder is connected to the fixed base via a flange.

10. A welding apparatus, characterized in that, Includes the multi-angle adjustable dual wire feeding welding gun structure as described in any one of claims 1 to 9.

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