A welding gun head and welding gun of dual-power dual-wire welding

Abstract

The utility model provides a kind of welding torch head and welding torch of double power double wire welding, including nozzle main body and integrated in nozzle main body main wire conducting component, slave wire conducting component, main wire adjusting assembly and angle adjusting assembly;The main wire conducting component and slave wire conducting component all include the conducting nozzle seat, conducting nozzle fixed cap and conducting nozzle assembled as a whole, the conducting nozzle fixed cap is set towards the protection gas hole of conducting nozzle one end;The main wire adjusting assembly is used to drive the overall movement of main wire conducting component along the axial direction of nozzle main body, to make the farthest main wire conducting component can extend nozzle;The angle adjusting assembly is used to adjust the included angle between main wire conducting component and slave wire conducting component. The scheme moves up and down by controlling double wire, can adjust dry extension length, can also adjust double wire spacing and included angle, uses sufficient adjusting flexibility to ensure welding stability.

Description

Technical Field

[0001] This utility model relates to the field of welding torch technology, specifically to a welding torch head and welding torch for dual-power dual-wire welding. Background Technology

[0002] In a conventional twin-wire welding torch, the nozzles at the torch head are independent of each other. Due to the large nozzle structure, when welding the root pass of a 25mm thick workpiece, the nozzle extension is usually kept at around 28-33mm to avoid interference with the workpiece. Excessive extension will lead to increased voltage and decreased current, making the welding process unstable and prone to welding defects.

[0003] To address this issue, those skilled in the art have conducted research and improvements, integrating the dual-wire structure into a single nozzle and enhancing the nozzle's adjustability. For example, existing patent documents, such as application number CN202420526810.X (titled "Rotating Dual-Wire Welding Gun") and application number CN202222358122.0 (titled "Dual-Wire Welding Gun"), both provide patent solutions that integrate the dual-wire structure into the same nozzle and possess adjustability.

[0004] However, most of these solutions are used to adjust the spacing between the two wires and do not emphasize the optimization of the protective gas path. When solving the aforementioned problem of dry extension, there is still a problem of welding stability that is difficult to overcome.

[0005] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a welding torch head and torch for dual-power dual-wire welding, which can adjust both the extension length and the spacing and angle between the two wires by controlling the up-and-down movement of the two wires, thereby ensuring welding stability through sufficient adjustment flexibility.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a welding torch head for dual-power dual-wire welding, comprising a nozzle body and a main wire conductive component, a slave wire conductive component, a main wire adjustment component, and an angle adjustment component integrated in the nozzle body;

[0008] The main wire adjustment assembly is used to drive the main wire conductive assembly to move along the axial direction of the nozzle body so that the main wire conductive assembly can extend out of the nozzle at its furthest point.

[0009] The angle adjustment component is used to adjust the angle between the main wire conductive component and the slave wire conductive component.

[0010] Based on the above, both the main wire conductive assembly and the slave wire conductive assembly include a conductive nozzle seat, a conductive nozzle fixing cap, and a conductive nozzle assembled as one unit, and the conductive nozzle fixing cap is provided with a protective air hole at the end facing the conductive nozzle.

[0011] Based on the above, a guide hole is opened in the nozzle body corresponding to the main wire conductive component, and the main wire adjusting component is a first linear motion component. The first linear motion component drives the main wire adjusting component to move linearly along the guide hole, thereby realizing the axial movement of the main wire conductive component.

[0012] Based on the above, the wire conductive assembly is movably hinged to the nozzle body, and the angle adjustment assembly includes a second linear motion assembly and a first connector. One end of the first connector is hinged to the tail end of the wire conductive assembly, and the other end is hinged to the movable end of the second linear motion assembly.

[0013] Based on the above, the main wire conductive assembly has a movable long groove along the axial direction, and the angle adjustment assembly further includes a second connector. One end of the second connector is hinged to the movable end of the second linear motion assembly, and the other end is inserted into the movable long groove so as not to affect the axial movement of the main wire conductive assembly.

[0014] Based on the above, the nozzle body is provided with an intermediate protective gas diversion unit, including a plurality of diversion air holes arranged in an array, the plurality of diversion air holes being arranged around the distribution space of the main wire conductive component and the slave wire conductive component.

[0015] Based on the above, the protective gas pipelines of the main wire conductive assembly, the slave wire conductive assembly, and the intermediate protective gas diversion unit are independently supplied and independently controlled.

[0016] Based on the above, the main wire conductive assembly and the slave wire conductive assembly are each equipped with independent power supply and control components.

[0017] A welding torch includes a welding torch and a welding torch head disposed on the head of the welding torch, wherein the welding torch head is the welding torch head of the dual-power dual-wire welding torch.

[0018] This invention has substantial features and advancements compared to existing technologies. Specifically, it incorporates a main wire adjustment component for the main wire conductive assembly. This component controls the overall axial movement of the main wire conductive assembly, allowing the main wire conductive tip to move outward and closer to the welding position. This effectively controls the extension length, thus avoiding problems such as increased voltage, decreased current, unstable welding process, and welding defects caused by excessive extension. Furthermore, the invention includes an angle adjustment component, which allows for adjustment of the angle between the main and driven wires. For example, when welding corner welds, adjusting the angle between the main and driven wires to 0 degrees increases the distance between the two wires, dividing the molten pool into two parts. This facilitates a smooth transition of the welding torch at the corner, reducing defects. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of the welding torch head for dual-power dual-wire welding in this utility model.

[0020] Figure 2 This is a schematic diagram of the overall structure of the welding torch head for dual-power dual-wire welding in this utility model.

[0021] Figure 3 This is a cross-sectional schematic diagram of the main wire conductive component in this utility model.

[0022] Figure 4 This is a cross-sectional view of the welding torch head for dual-power dual-wire welding in this utility model.

[0023] In the figure: 1. Nozzle body; 2. Main wire conductive assembly; 3. Slave wire conductive assembly; 4. Main wire adjustment assembly; 5. Angle adjustment assembly; 6. Intermediate protective gas diversion unit; 7. First connector; 8. Movable long groove; 9. Second connector; 10. Nozzle protective cover; 11. Conductive nozzle seat; 12. Conductive nozzle fixing cap; 13. Conductive nozzle; 14. Protective air hole; 15. Diversion air hole. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0025] Example 1

[0026] like Figures 1-4 As shown, a welding torch head for dual-power dual-wire welding includes a nozzle body 1 and a main wire conductive assembly 2, a secondary wire conductive assembly 3, a main wire adjustment assembly 4, and an angle adjustment assembly 5 integrated in the nozzle body.

[0027] In this embodiment, both the main wire conductive assembly 2 and the slave wire conductive assembly 3 include a conductive nozzle seat 11, a conductive nozzle fixing cap 12, and a conductive nozzle 13 assembled as a whole. The conductive nozzle fixing cap 12 is provided with a protective air hole 14 at the end facing the conductive nozzle 13. The protective air in the protective air hole 14 of the main wire conductive assembly 1 and the slave wire conductive assembly 2 can be controlled to open independently, and is used to open when the main wire or the slave wire is working independently.

[0028] In a preferred embodiment, the nozzle body 1 is provided with an intermediate protective gas diversion unit 6, which includes a plurality of diversion air holes 15 arranged in an array, and the plurality of diversion air holes 15 are arranged around the distribution space of the main wire conductive component 2 and the secondary wire conductive component 3.

[0029] The shielding gas pipelines of the main wire conductive assembly 2, the secondary wire conductive assembly 3, and the intermediate shielding gas diversion unit 6 are independently supplied and controlled. With this structure, the shielding gas of the welding torch is divided into three paths. In single-wire mode, the shielding gas of the corresponding welding wire and the intermediate shielding gas are turned on. In dual-wire mode, all three shielding gas paths are turned on, which can save shielding gas while effectively protecting the molten pool.

[0030] In terms of adjustment design, there are mainly two adjustment modes:

[0031] The main wire adjustment assembly 4 is used to drive the main wire conductive assembly 2 to move along the axial direction of the nozzle body 1, so that the main wire conductive assembly 2 can extend beyond the nozzle. The front end of the nozzle body 1 is the nozzle protective cover 10, and the outermost end of the main wire conductive assembly 2 can extend beyond the boundary of the nozzle protective cover 10.

[0032] Specifically, a guide hole is opened in the nozzle body 1 corresponding to the main wire conductive component 2. The main wire adjusting component 4 is a first linear motion component, which in this embodiment is a lifting motor component or a lifting cylinder component. The lifting motor component or the lifting cylinder component is installed on the nozzle body 1. The first linear motion component drives the main wire adjusting component 2 to move linearly along the guide hole, specifically by abutting the tail end of the main wire adjusting component 2 at the conductive nozzle seat 11, thereby realizing the axial movement of the main wire conductive component 2.

[0033] The main wire contact tip of this welding torch structure has an axial movement function (based on the welding torch having a lifting function). When performing root pass welding on a 25mm thick workpiece, the contact tip extends out of the nozzle, keeping the wire extension at around 15-18mm. With moderate voltage and current, the welding process is stable, which helps to ensure the quality of the root pass welding.

[0034] The angle adjustment component 5 is used to adjust the included angle between the main wire conductive component 2 and the driven wire conductive component 3. In this embodiment, the included angle between the two is mainly changed by adjusting the angle of the driven wire conductive component 3. Specifically, the driven wire conductive component 3 is movably hinged to the nozzle body 1, such as by hinge shaft or by limiting elongated hole. The angle adjustment component 5 includes a second linear motion component and a first connecting member 7. One end of the first connecting member 7 is hinged to the tail end of the driven wire conductive component 3 (at the conductive nozzle seat 11), and the other end is hinged to the movable end of the second linear motion component. In this embodiment, the second linear motion component can be a lifting motor component or a lifting cylinder component, which is mounted on the nozzle body 1.

[0035] Its main function is to adjust the angle between the master and slave wires to 0 when welding corner welds. At this time, the distance between the two wires becomes larger, and the molten pool is divided into two, which is conducive to the smooth transition of the welding torch at the corner and reduces defects.

[0036] To ensure the stability of the main wire conductive assembly 2, a movable long groove 8 is formed along the axial direction at the conductive nozzle seat 11 of the main wire conductive assembly 2. The angle adjustment assembly also includes a second connector 9, one end of which is hinged to the movable end of the second linear motion assembly, and the other end is inserted into the movable long groove 8. This is so that the axial movement of the main wire conductive assembly 2 is not affected, while it can also restrain the driven wire conductive assembly 3 to ensure the stability of the movement.

[0037] At the control level, the main wire conductive assembly 2 and the slave wire conductive assembly 3 are each equipped with independent power supply and control components.

[0038] Example 2

[0039] A welding torch includes a welding torch and a welding torch head disposed on the head of the welding torch, wherein the welding torch head is the welding torch head of the dual-power dual-wire welding torch.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A welding torch head for dual-power, dual-wire welding, characterized in that: It includes a nozzle body and a main filament conductive assembly, a slave filament conductive assembly, a main filament adjustment assembly, and an angle adjustment assembly integrated into the nozzle body; The main wire adjustment assembly is used to drive the main wire conductive assembly to move along the axial direction of the nozzle body so that the main wire conductive assembly can extend out of the nozzle at its furthest point. The angle adjustment component is used to adjust the angle between the main wire conductive component and the slave wire conductive component.

2. The welding torch head for dual-power dual-wire welding according to claim 1, characterized in that: Both the main wire conductive assembly and the slave wire conductive assembly include a conductive nozzle seat, a conductive nozzle fixing cap, and a conductive nozzle assembled as one unit. The conductive nozzle fixing cap has a protective vent at the end facing the conductive nozzle.

3. The welding torch head for dual-power dual-wire welding according to claim 2, characterized in that: The nozzle body has a guide hole corresponding to the main wire conductive component. The main wire adjustment component is a first linear motion component. The first linear motion component drives the main wire adjustment component to move linearly along the guide hole, thereby realizing the axial movement of the main wire conductive component.

4. The welding torch head for dual-power dual-wire welding according to claim 3, characterized in that: The wire conductive component is movably hinged to the nozzle body. The angle adjustment component includes a second linear motion component and a first connector. One end of the first connector is hinged to the tail end of the wire conductive component, and the other end is hinged to the movable end of the second linear motion component.

5. The welding torch head for dual-power dual-wire welding according to claim 4, characterized in that: The main wire conductive assembly has a movable long groove along the axial direction. The angle adjustment assembly also includes a second connector. One end of the second connector is hinged to the movable end of the second linear motion assembly, and the other end is inserted into the movable long groove so as not to affect the axial movement of the main wire conductive assembly.

6. The welding torch head for dual-power dual-wire welding according to any one of claims 1-5, characterized in that: The nozzle body is provided with an intermediate protective gas diversion unit, which includes a plurality of diversion air holes arranged in an array, and the plurality of diversion air holes are arranged around the distribution space of the main wire conductive component and the slave wire conductive component.

7. The welding torch head for dual-power dual-wire welding according to claim 6, characterized in that: The protective gas pipelines of the main wire conductive assembly, the secondary wire conductive assembly, and the intermediate protective gas diversion unit are independently supplied and controlled.

8. The welding torch head for dual-power dual-wire welding according to claim 1, characterized in that: The main wire conductive assembly and the slave wire conductive assembly are each equipped with independent power supply and control components.

9. A welding torch, characterized in that: It includes a welding torch and a welding torch head disposed on the head of the welding torch, wherein the welding torch head is the welding torch head for dual-power dual-wire welding as described in any one of claims 1-8.

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