A narrow gap welding torch

Abstract

The utility model relates to MIG welding technical field provides a kind of narrow gap welding welding torch, welding end is designed as flat, so that welding end can be inserted into narrow gap, so that welding end can weld gap. Since the outer surface of the welding body is provided with a magnetic field assembly, and the axis direction of the iron core intersects the length direction of the welding body, when the coil is connected to an alternating current, the magnetic field generated by the coil can act on the welding end. Since the coil inputs alternating current, the magnetic field generated is an alternating magnetic field, which changes the direction of the arc on the welding end, making the weld and the side wall more uniform, thereby improving the welding quality and welding efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of MIG welding technology, and in particular relates to a narrow gap welding torch. Background Technology

[0002] MIG (meltinert-gas welding) refers to an arc welding method that uses a consumable electrode, an external gas as the arc medium, and protects the molten metal droplets, the weld pool, and the high-temperature metal in the weld zone.

[0003] MIG welding is widely used in narrow-gap welding due to its ability to weld almost all metals and its high labor productivity. However, the structural design of traditional MIG welding torches limits the fusion effect between the weld and the sidewall during narrow-gap welding, thus affecting the welding result. Utility Model Content

[0004] Based on the above background, the purpose of this utility model is to provide a narrow gap welding torch to improve the fusion effect between the weld and the sidewall during narrow gap welding, thereby improving the welding effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A narrow-gap welding torch includes: a torch body, which is an arc welding torch, with one end being a welding end, the welding end being flat; a magnetic field mechanism, including a first mounting component, a second mounting component, and a magnetic field assembly, wherein the first mounting component is disposed on the outer surface of the torch body, the second mounting component is disposed on the first mounting component, and the magnetic field assembly is disposed within the second mounting component; wherein the magnetic field assembly includes an iron core and a coil wound around the outer periphery of the iron core, the axial direction of the iron core intersects with the length direction of the torch body, and the coil is used to pass alternating current.

[0007] Furthermore, the first mounting member includes a first clamping edge and a second clamping edge, the first clamping edge and the second clamping edge being sleeved around the outer surface of the welding torch body, and the second mounting member being disposed on the surface of the first clamping edge facing away from the welding torch body.

[0008] Furthermore, a first flange is provided on each of the opposite sides of the first clamping edge, and a second flange is provided on each of the opposite sides of the second clamping edge, wherein the first flange and the second flange are connected by bolts.

[0009] Furthermore, the second mounting component includes a third clamping edge and a fourth clamping edge, which are connected to each other to form a receiving channel between them. The magnetic field assembly is disposed in the receiving channel, and the third clamping edge is disposed on the first mounting component.

[0010] Furthermore, a third flange is provided on each of the opposite sides of the third clamping edge, and a fourth flange is provided on each of the opposite sides of the fourth clamping edge. The third flange and the fourth flange are connected by bolts, and both the third flange and the fourth flange are provided on the first mounting component.

[0011] Furthermore, the magnetic field mechanism also includes an adjustment structure, which is disposed between the first mounting member and the second mounting member, and is used to adjust the position of the second mounting member along the length direction of the welding torch body.

[0012] Furthermore, the adjustment structure includes a guide rail, a slider, and a locking member. The guide rail is disposed on the first mounting member and extends along the length direction of the welding torch body. The slider is slidably disposed on the guide rail and on the second mounting member. The locking member is used to lock the slider on the guide rail.

[0013] Furthermore, the locking element is a bolt, the slider is provided with a groove, the groove is engaged with the guide rail, the bolt is screwed onto the slider and passes through the groove, and abuts against the guide rail.

[0014] Furthermore, the welding torch body includes an inlet tube, a flow divider, a nozzle, and a conductive tip. The conductive tip is connected to the inlet tube, the nozzle is sleeved on the outside of the conductive tip, the flow divider is used to divert inert gas into the nozzle, and one end of the conductive tip is the welding end.

[0015] Furthermore, the nozzle is of ceramic structure.

[0016] This utility model has the following beneficial effects:

[0017] (1) The welding end is designed to be flat, allowing it to be inserted into a narrow gap and thus weld the seam. Since a magnetic field component is installed on the outer surface of the welding body, and the axis of the iron core intersects the length of the welding body, the magnetic field generated by the coil when alternating current is applied to the coil can act on the welding end. Furthermore, because alternating current is input to the coil, the generated magnetic field is an alternating magnetic field, changing the direction of the arc on the welding end, resulting in a more uniform fusion of the weld and the sidewall, thereby improving welding quality and efficiency.

[0018] (2) The first mounting component is designed with a first clamping edge and a second clamping edge, so that the first mounting component can tightly clamp the outer surface of the welding torch body, ensuring that the magnetic field component is more stably fixed on the welding torch body, so that the magnetic field component can exert a stable and effective magnetic field on the welding end, thereby stably changing the direction of the electric arc on the welding end.

[0019] (3) An adjustment structure is provided between the first mounting component and the second mounting component so that the position of the second mounting component can be adjusted along the length of the welding torch body, thereby making the magnetic field generated by the magnetic field component act better on the welding end and ensuring that the weld and the side wall are more uniformly fused.

[0020] (4) The nozzle is designed as a ceramic structure, which makes the nozzle have good insulation and thermal conductivity. This can quickly transfer the heat of the conductive nozzle, avoid the conductive nozzle from melting due to high temperature during welding, and at the same time avoid the current of the conductive nozzle being guided to the workpiece through the nozzle and causing an arc on the bevel sidewall. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the welding torch described in one embodiment;

[0023] Figure 2 This is a schematic diagram of the structure of the first mounting component and the second mounting component in one embodiment;

[0024] Figure 3 This is a schematic diagram showing the disassembled first and second mounting components as described in one embodiment;

[0025] Figure 4 This is a cross-sectional view of the welding torch described in one embodiment.

[0026] Explanation of icon numbers:

[0027] 10. Welding torch body; 11. Welding end; 12. Inlet tube; 13. Diverter; 14. Nozzle; 15. Conductive tip; 20. Magnetic field mechanism; 21. First mounting component; 211. First clamping edge; 212. Second clamping edge; 213. First flange; 214. Second flange; 22. Second mounting component; 221. Third clamping edge; 222. Fourth clamping edge; 223. Third flange; 224. Fourth flange; 225. Receiving channel; 23. Magnetic field assembly; 231. Iron core; 232. Coil; 30. Adjustment structure; 31. Guide rail; 32. Slider; 321. Slide groove; 33. Locking component.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] 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.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] In one embodiment, please refer to Figures 1 to 4This application provides a narrow gap welding torch, including: a torch body 10, which is an arc welding torch, and one end of which is a welding end 11, which is flat; a magnetic field mechanism 20, including a first mounting member 21, a second mounting member 22, and a magnetic field assembly 23. The first mounting member 21 is disposed on the outer surface of the torch body 10, the second mounting member 22 is disposed on the first mounting member 21, and the magnetic field assembly 23 is disposed inside the second mounting member 22; wherein, the magnetic field assembly 23 includes an iron core 231 and a coil 232 wound around the outer periphery of the iron core 231. The axial direction of the iron core 231 intersects the length direction of the torch body 10, and the coil 232 is used to pass in alternating current.

[0033] The aforementioned narrow-gap welding torch features a flat welding end 11, allowing it to be inserted into the narrow gap and weld the seam. Because a magnetic field component 23 is mounted on the outer surface of the welding body, and the axis of the iron core 231 intersects the length direction of the welding body, the magnetic field generated by the coil 232 when alternating current is applied to it can act on the welding end 11. Furthermore, since alternating current is input to the coil 232, the resulting magnetic field is an alternating magnetic field, changing the direction of the arc on the welding end 11, resulting in a more uniform fusion of the weld and the sidewall, thereby improving welding quality and efficiency.

[0034] It should be explained that the welding end 11 is flat, allowing it to be inserted into narrow gaps for narrow-gap welding. The thickness of the welding end 11 can be designed to be 4mm, thus enabling welding of narrow gaps of 5mm to 8mm.

[0035] Meanwhile, in the magnetic field assembly 23, the coil 232 is wound around the outer circumference of the iron core 231, which enhances the magnitude of the magnetic field generated by the magnetic field assembly 23. When high-frequency alternating current is input to the coil 232, the generated magnetic field can also be an alternating magnetic field. When alternating current is input, the frequency of the alternating current can be changed to achieve a controllable change in the direction of the magnetic field.

[0036] Furthermore, the first mounting component 21 can be connected to the welding torch body 10 in various ways, such as, but not limited to, clamping, bolting, snap-fitting, and welding. Meanwhile, the second mounting component 22 can be connected to the first mounting component 21 in either a movable or fixed manner.

[0037] Further, please refer to Figure 1 and Figure 2The first mounting component 21 includes a first clamping edge 211 and a second clamping edge 212, which are looped around the outer surface of the welding torch body 10. The second mounting component 22 is disposed on the surface of the first clamping edge 211 facing away from the welding torch body 10. It can be seen that designing the first mounting component 21 as having a first clamping edge 211 and a second clamping edge 212 allows the first mounting component 21 to tightly clamp onto the outer surface of the welding torch body 10, ensuring that the magnetic field assembly 23 is more stably fixed to the welding torch body 10. This facilitates the magnetic field assembly 23 to exert a stable and effective magnetic field on the welding end 11, thereby stably changing the direction of the electric arc on the welding end 11.

[0038] Optionally, the connection between the first clamping edge 211 and the second clamping edge 212 can be by bolt connection, snap-fit, welding, bonding, etc.

[0039] Furthermore, first flanges 213 are respectively provided on opposite sides of the first clamping edge 211, and second flanges 214 are respectively provided on opposite sides of the second clamping edge 212. The first flanges 213 and the second flanges 214 are connected by bolts. It can be seen that by connecting the first flanges 213 and the second flanges 214 by bolts, the first clamping edge 211 and the second clamping edge 212 are tightly fixed to the welding torch body 10, and the magnetic field component 23 is tightly bonded to the welding torch body 10.

[0040] Specifically, the two first flanges 213 and the first clamping edge 211 are an integrated structure, and the two second flanges 214 and the second clamping edge 212 are an integrated structure.

[0041] In one embodiment, please refer to Figure 1 and Figure 2 The second mounting member 22 includes a third clamping edge 221 and a fourth clamping edge 222, which are connected to each other to form a receiving channel 225 between them. The magnetic field assembly 23 is disposed in the receiving channel 225, and the third clamping edge 221 is disposed on the first mounting member 21. It can be seen that designing the second mounting member 22 with the third clamping edge 221 and the fourth clamping edge 222 makes the magnetic field assembly 23 stably fixed in the receiving channel 225 of the second mounting member 22, ensuring that the magnetic field assembly 23 is more stably fixed on the welding torch body 10, which facilitates the magnetic field assembly 23 to exert a stable and effective magnetic field on the welding end 11, thereby stably changing the direction of the arc on the welding end 11.

[0042] Optionally, the connection between the third clamping edge 221 and the fourth clamping edge 222 can be by bolt connection, snap-fit, welding, bonding, etc.

[0043] Further, please refer to Figure 1 and Figure 2The third flange 223 is provided on the opposite sides of the third clamping edge 221, and the fourth flange 224 is provided on the opposite sides of the fourth clamping edge 222. The third flange 223 and the fourth flange 224 are connected by bolts. Both the third flange 223 and the fourth flange 224 are provided on the first mounting part 21.

[0044] Specifically, the two third flanges 223 and the third clamping edge 221 are an integrated structure, and the two fourth flanges 224 and the fourth clamping edge 222 are an integrated structure.

[0045] In one embodiment, please refer to Figure 3 and Figure 4 The magnetic field mechanism 20 also includes an adjustment structure 30, which is located between the first mounting member 21 and the second mounting member 22. The adjustment structure 30 is used to adjust the position of the second mounting member 22 along the length of the welding torch body 10. It can be seen that the adjustment structure 30, located between the first mounting member 21 and the second mounting member 22, allows the position of the second mounting member 22 to be adjusted along the length of the welding torch body 10, thereby enabling the magnetic field generated by the magnetic field assembly 23 to act more effectively on the welding end 11, ensuring a more uniform fusion between the weld and the sidewall.

[0046] Further, please refer to Figure 3 and Figure 4 The adjustment structure 30 includes a guide rail 31, a slider 32, and a locking component. The guide rail 31 is located on the first mounting member 21 and extends along the length of the welding torch body 10. The slider 32 is slidably mounted on the guide rail 31 and is located on the second mounting member 22. The locking component is used to lock the slider 32 onto the guide rail 31. It can be seen that by cooperating with the guide rail 31, the second mounting member 22 slides along its length. After the second mounting member 22 moves to a suitable position, the locking component locks the slider 32 onto the guide rail 31, ensuring that the magnetic field component 23 can better act on the welding end 11.

[0047] Furthermore, the locking element is a bolt, and the slider 32 is provided with a groove 321. The groove 321 is locked on the guide rail 31, and the bolt is screwed onto the slider 32, passes through the groove 321, and abuts against the guide rail 31.

[0048] In one embodiment, please refer to Figure 4The welding torch body 10 includes an inlet tube 12, a distributor 13, a nozzle 14, and a conductive tip 15. The conductive tip 15 is connected to the inlet tube 12, and the nozzle 14 is sleeved on the outside of the conductive tip 15. The distributor 13 is used to divert inert gas into the nozzle 14, and one end of the conductive tip 15 is the welding end 11. It can be seen that the nozzle 14 is designed as a ceramic structure, which gives the nozzle 14 good insulation and thermal conductivity. This allows the heat from the conductive tip 15 to be transferred out quickly, preventing the conductive tip 15 from melting due to high temperature during welding. At the same time, it can prevent the current from the conductive tip 15 from being guided to the workpiece through the nozzle 14 and igniting an arc on the bevel sidewall.

[0049] It should be explained that welding wire can be fed into the inlet tube 12, and the welding gun body 10 can be a MIG (melt inert-gas welding) gun. Its working principle can be referred to existing products, and will not be described in detail here.

[0050] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A narrow-gap welding torch, characterized in that, include: The welding torch body (10) is an arc welding torch, and one end of it is a welding end (11), which is flat. The magnetic field mechanism (20) includes a first mounting part (21), a second mounting part (22) and a magnetic field assembly (23). The first mounting part (21) is disposed on the outer surface of the welding torch body (10), the second mounting part (22) is disposed on the first mounting part (21), and the magnetic field assembly (23) is disposed inside the second mounting part (22). The magnetic field component (23) includes an iron core (231) and a coil (232) wrapped around the outer periphery of the iron core (231). The axial direction of the iron core (231) intersects the length direction of the welding torch body (10), and the coil (232) is used to pass in alternating current.

2. The narrow gap welding torch according to claim 1, characterized in that, The first mounting component (21) includes a first clamping edge (211) and a second clamping edge (212), which are looped around the outer surface of the welding torch body (10). The second mounting component (22) is disposed on the surface of the first clamping edge (211) facing away from the welding torch body (10).

3. A narrow gap welding torch according to claim 2, characterized in that, The first clamping edge (211) has a first flange (213) on each of its opposite sides, and the second clamping edge (212) has a second flange (214) on each of its opposite sides. The first flange (213) and the second flange (214) are connected by bolts.

4. A narrow-gap welding torch according to claim 1, characterized in that, The second mounting member (22) includes a third clamping edge (221) and a fourth clamping edge (222), the third clamping edge (221) and the fourth clamping edge (222) being connected to each other to form a receiving channel (225) between them, the magnetic field assembly (23) being disposed in the receiving channel (225), and the third clamping edge (221) being disposed on the first mounting member (21).

5. A narrow-gap welding torch according to claim 4, characterized in that, The third clamping edge (221) has a third flange (223) on each of its opposite sides, and the fourth clamping edge (222) has a fourth flange (224) on each of its opposite sides. The third flange (223) and the fourth flange (224) are connected by bolts. Both the third flange (223) and the fourth flange (224) are provided on the first mounting part (21).

6. A narrow-gap welding torch according to any one of claims 1-5, characterized in that, The magnetic field mechanism (20) further includes an adjustment structure (30), which is located between the first mounting member (21) and the second mounting member (22) and is used to adjust the position of the second mounting member (22) along the length direction of the welding torch body (10).

7. A narrow-gap welding torch according to claim 6, characterized in that, The adjustment structure (30) includes a guide rail (31), a slider (32), and a locking member. The guide rail (31) is disposed on the first mounting member (21) and extends along the length direction of the welding torch body (10). The slider (32) is slidably disposed on the guide rail (31) and disposed on the second mounting member (22). The locking member is used to lock the slider (32) on the guide rail (31).

8. A narrow gap welding torch according to claim 7, characterized in that, The locking element is a bolt. The slider (32) is provided with a groove (321). The groove (321) is locked on the guide rail (31). The bolt is screwed onto the slider (32), passes through the groove (321), and abuts against the guide rail (31).

9. A narrow-gap welding torch according to any one of claims 1-5, characterized in that, The welding torch body (10) includes an inlet tube (12), a flow divider (13), a nozzle (14), and a conductive nozzle (15). The conductive nozzle (15) is connected to the inlet tube (12), the nozzle (14) is sleeved on the outside of the conductive nozzle (15), the flow divider (13) is used to divert inert gas to the nozzle (14), and one end of the conductive nozzle (15) is the welding end (11).

10. A narrow-gap welding torch according to claim 9, characterized in that, The nozzle (14) is of ceramic structure.

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