Welding torch and welding apparatus
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU AUTOMOBILE GROUP CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-07
AI Technical Summary
Existing welding torches have problems when welding car bodies, such as poor appearance quality of the welded products, difficulty in welding thicker workpieces, and difficulty in welding in confined spaces.
Design a welding torch with a first welding contact surface area larger than the second welding contact surface area. The first welding contact surface disperses the stress on the workpiece surface during welding and achieves stable welding of thicker workpieces through heat concentration. The second welding contact surface area is smaller to adapt to welding in confined spaces.
It improves the appearance quality of weld joints, enables stable welding of thicker workpieces, and enhances welding flexibility to meet the needs of welding in confined spaces.
Smart Images
Figure CN224463889U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of welding technology, and in particular to a welding torch and welding equipment. Background Technology
[0002] With the development of the automotive industry, consumers have increasingly higher requirements for the quality of exterior welds such as side skirts and opening / closing components. Therefore, it is necessary to improve the appearance quality of these welds. At the same time, with increasing performance requirements such as collision resistance, the assembly of exterior welds has become more complex and varied, significantly increasing the difficulty of quality control. Furthermore, due to design requirements, the welding space in the side skirts area has been further reduced, increasing the welding difficulty.
[0003] In related technologies, welding torches used for welding car bodies have problems such as poor appearance quality of the welded products, difficulty in welding thicker workpieces, and difficulty in welding in confined spaces. Utility Model Content
[0004] This application provides a welding torch that produces welds with good appearance quality on the outer side of the workpiece, can weld thicker workpieces, and can achieve welding in confined spaces.
[0005] This application also provides a welding device having the above-described welding torch.
[0006] A welding torch according to a first aspect of this application includes: a welding torch body; a first electrode rod and a second electrode rod disposed on the welding torch body; a first electrode cap and a second electrode cap, wherein the first electrode cap is disposed on the first electrode rod and the second electrode cap is disposed on the second electrode rod, the first electrode cap and the second electrode cap are disposed opposite to each other and spaced apart, the first electrode cap has a first welding contact surface for contacting a workpiece, and the second electrode cap has a second welding contact surface for contacting a workpiece, wherein the area of the first welding contact surface is larger than the area of the second welding contact surface.
[0007] According to the welding torch of this application embodiment, by making the area of the first welding contact surface larger than the area of the second welding contact surface, when the first welding contact surface is used to weld the appearance side and the second welding contact surface is used to weld the non-appearance side, the larger area of the first welding contact surface disperses the stress on the workpiece surface during the welding process. In cases where the gap between the workpiece sheet metal is large or the welding torch is not perpendicular, deformation is less likely to occur on the workpiece side welded on the first welding contact surface, thereby improving the appearance quality of the weld point on the appearance side of the workpiece. Since the areas of the first and second welding contact surfaces are different, the heat during the welding process is more concentrated, and less energy consumption can ensure better weld nugget strength, which is more conducive to the formation of the weld nugget, thereby enabling stable welding of thicker workpieces. By making the area of the second welding contact surface smaller, the constraint of the welding space on the second welding contact surface can be reduced, making it easier for the second electrode cap to be pressed into the bottom plate in a narrow space for welding, thereby improving the flexibility of welding.
[0008] According to some embodiments of this application, the outer contour of the first welding contact surface is a first outer contour, the outer contour of the second welding contact surface is a second outer contour, both the first outer contour and the second outer contour are circular, and the diameter of the first outer contour is larger than the diameter of the second outer contour.
[0009] In the above technical solution, by making the diameter of the first outer contour larger than the diameter of the second outer contour, when the first welding contact surface is used to weld the appearance side and the second welding contact surface is used to weld the non-appearance side, the larger area of the first welding contact surface disperses the stress on the workpiece surface during the welding process. Under conditions such as large gaps in the sheet metal of the workpiece and non-perpendicular welding torch, deformation is less likely to occur on the workpiece side welded on the first welding contact surface, thereby improving the appearance quality of the weld point on the appearance side of the workpiece. Since the areas of the first welding contact surface and the second welding contact surface are different, the heat during the welding process is more concentrated, and less energy consumption can ensure better weld nugget strength, which is more conducive to the formation of weld nugget, thus enabling stable welding of thicker workpieces.
[0010] According to some embodiments of this application, the diameter of the first outer contour is φ8mm-φ16mm, and the diameter of the second outer contour is φ3mm-φ12mm.
[0011] In the above technical solution, by setting the diameter of the first outer contour to φ8mm-φ16mm and the diameter of the second outer contour to φ3mm-φ12mm, the areas of the first welding contact surface and the second welding contact surface are different, the heat during the welding process is more concentrated, and less energy consumption can ensure better weld nugget strength, which is more conducive to the formation of weld nugget, thereby enabling stable welding of thicker workpieces.
[0012] According to some embodiments of this application, the first welding contact surface is a plane, a sphere, or a combination of a plane and a sphere.
[0013] In the above technical solutions, by setting the first welding contact surface as a plane, the contact area between the first welding contact surface and the workpiece to be welded can be increased, thereby reducing the stress concentration generated by the workpiece in contact with the first welding contact surface and reducing weld point appearance defects such as weld point distortion; or, by setting the first welding contact surface as a sphere, the first contact point between the sphere of the first welding contact surface and the workpiece can be pressed into the workpiece surface to absorb a small portion of the stress, thereby reducing weld point appearance defects such as weld point distortion; or, by setting the first welding contact surface as a combination of a plane and a sphere, the contact area between the first welding contact surface and the workpiece to be welded can be reduced, thereby reducing welding energy consumption.
[0014] According to some embodiments of this application, the second welding contact surface is a plane or a sphere.
[0015] In the above technical solution, by setting the second welding contact surface as a plane, it can be adapted to the welding of workpieces with high hardness. The surface of the workpiece with high hardness is not easily deformed during welding. When welding the workpiece with high hardness on the second welding contact surface, the plane second welding contact surface is more conducive to full contact with the workpiece. Alternatively, by setting the second welding contact surface as a spherical surface, it can be adapted to the welding of workpieces with low hardness. When welding the workpiece with low hardness on the second welding contact surface, the spherical surface is more conducive to full contact with the workpiece that is prone to deformation.
[0016] According to some embodiments of this application, the first welding contact surface includes a middle contact portion and an outer ring contact portion, the outer ring contact portion being disposed around the middle contact portion, the middle contact portion being a plane, and the outer ring contact portion being a spherical surface.
[0017] In the above technical solution, by setting the first welding contact surface as a spherical outer ring contact portion surrounding the plane of the middle contact portion, the first welding contact surface can be adapted to the welding of curved workpieces. When welding curved workpieces on the first welding contact surface, the spherical outer ring contact surface is more conducive to making full contact with the curved workpiece, which can reduce the welding heat input and thus reduce the perpendicularity requirement between the welding torch electrode and the workpiece to be welded plane.
[0018] According to some embodiments of this application, the intermediate contact portion is tangent to the outer ring contact portion.
[0019] In the above technical solution, by making the middle contact part tangent to the outer ring contact part, the transition between the middle contact part and the outer ring contact part can be made smoother, reducing the reduction in the flatness of the workpiece weld caused by the protrusion of the connection part between the middle contact part and the outer ring contact part.
[0020] According to some embodiments of this application, the intermediate contact portion is circular, and the diameter of the intermediate contact portion is φ6mm-φ10mm.
[0021] In the above technical solution, by setting the intermediate contact portion as a circle with a diameter of φ6mm-φ10mm, it is easier to align the intermediate contact portion of the first welding contact surface with the position to be welded during the welding process, reducing the possibility of offset and misalignment, thereby improving the accuracy and stability of the welding. This also reduces the heat input during welding and saves welding costs.
[0022] According to some embodiments of this application, the ball radius of the outer ring contact portion is SR30mm-SR200mm.
[0023] In the above technical solution, setting the sphere radius of the outer ring contact part to SR30mm-SR200mm enables the first welding contact surface to adapt to the welding of curved workpieces. When welding curved workpieces on the first welding contact surface, the contact surface of the sphere surrounding the plane is more conducive to making full contact with the curved workpiece, reducing local welding defects caused by stress concentration during welding, thereby improving the appearance quality of the weld point.
[0024] According to some embodiments of this application, the first welding contact surface is a spherical surface, and the radius of the sphere of the first welding contact surface is SR70mm-SR1000mm.
[0025] In the above technical solution, by setting the first welding contact surface as a spherical surface with a radius of SR70mm-SR1000mm, it can be adapted to the welding of workpieces with low hardness. When welding workpieces with low hardness on the first welding contact surface, the spherical surface is more conducive to making full contact with workpieces that are prone to deformation.
[0026] According to some embodiments of this application, the second welding contact surface is planar and circular, and the diameter of the second outer contour is φ3mm-φ8mm.
[0027] In the above technical solution, by setting the second welding contact surface as a circular plane and setting the diameter of the second outer contour as φ3mm-φ8mm, it can be adapted to the welding of workpieces with high hardness. The surface of the workpiece with high hardness is not easily deformed during welding. When welding workpieces with high hardness on the second welding contact surface, the circular plane second welding contact surface is more conducive to full contact with the workpiece.
[0028] According to some embodiments of this application, the second welding contact surface is a spherical surface, the radius of the sphere of the second welding contact surface is SR30mm-SR200mm, and the diameter of the second outer contour is φ3mm-φ12mm.
[0029] In the above technical solution, by setting the second welding contact surface as a sphere, and setting the sphere radius of the second welding contact surface to SR30mm-SR200mm and the diameter of the second outer contour to φ3mm-φ12mm, it can be adapted to the welding of workpieces with low hardness. Workpieces with low hardness are more likely to deform on the surface during welding. When welding workpieces with low hardness on the second welding contact surface, the spherical second welding contact surface is more conducive to making full contact with the workpieces with low hardness.
[0030] According to some embodiments of this application, the first electrode cap includes a first end face, the first end face includes a first guide surface, a rounded corner surface and a first welding contact surface, the first guide surface is located on the outer periphery of the first electrode cap, the rounded corner surface is connected between the first guide surface and the first welding contact surface, the first welding contact surface is tangent to the rounded corner surface, and the diameter of the first electrode cap gradually decreases in the direction from the first guide surface to the first welding contact surface.
[0031] In the above technical solution, by placing the first guide surface on the outer periphery of the first electrode cap, it can play a guiding role when the grinding tool grinds the first electrode cap, and the first guide surface can limit the grinding tool to prevent the blade of the grinding tool from falling out during the grinding process, thereby improving the safety of the grinding process of the first electrode cap.
[0032] The first electrode cap is connected between the first guide surface and the first welding contact surface by a rounded corner surface. The first welding contact surface is tangent to the rounded corner surface. The diameter of the first electrode cap gradually decreases in the direction from the first guide surface to the first welding contact surface, making the grinding process of the first electrode cap smoother, reducing the difficulty of grinding the first electrode cap, and also simplifying the processing of grinding tools and reducing costs.
[0033] According to some embodiments of this application, the height of the first end face in the axial direction of the first electrode cap is 5mm-12mm.
[0034] In the above technical solution, by setting the height of the first end face in the axial direction of the first electrode cap to 5mm-12mm, it is beneficial to prevent the blade from falling out during the grinding process when the first welding contact surface of the first electrode cap is ground, thereby improving the safety of the grinding process of the first electrode cap.
[0035] According to some embodiments of this application, the longitudinal section of the first guide surface is an arc, the radius of the arc of the first guide surface is 8mm-16mm, and the first guide surface is tangent to the rounded corner surface.
[0036] In the above technical solution, by setting the longitudinal section of the first guide surface as an arc and the radius of the arc of the first guide surface as 8mm-16mm, and the first guide surface being tangent to the rounded corner surface, the process of grinding the first electrode cap is made smoother, which can reduce the difficulty of grinding the first electrode cap, and also make the processing of grinding tools simpler and reduce costs.
[0037] According to some embodiments of this application, the longitudinal section of the first guide surface is a straight line.
[0038] In the above technical solution, by making the longitudinal section of the first guide surface a straight line, the structure is simple, which facilitates the processing and forming of the first motor cap. It can also limit the grinding tool when grinding the first electrode cap, prevent the blade from falling out during the grinding process, and improve the safety of the grinding process of the first electrode cap.
[0039] According to some embodiments of this application, the radius of the rounded corner surface is 0.5mm-3mm.
[0040] In the above technical solution, by setting the radius of the rounded corner surface to 0.5mm-3mm, the friction between the electrode cap and the grinding tool can be increased when grinding the first electrode cap, preventing the first electrode cap from wobbling left and right, thereby making the grinding process more stable, reducing the dimensional error of the first electrode cap, and improving the product quality of the first electrode cap.
[0041] According to some embodiments of this application, the height dimension of the rounded corner surface in the axial direction of the first electrode cap is 0.3-5mm.
[0042] In the above technical solution, by setting the height of the rounded corner surface in the axial direction of the first electrode cap to 0.3-5mm, the friction between the electrode cap and the grinding tool can be increased during the grinding of the first electrode cap, preventing the first electrode cap from wobbling from side to side, thereby making the grinding process more stable, reducing the dimensional error of the first electrode cap, and improving the product quality of the first electrode cap.
[0043] According to some embodiments of this application, the second electrode cap includes a second end face, the second end face includes a second guide surface and a second welding contact surface, the second guide surface is located on the outer periphery of the second electrode cap, and the diameter of the second electrode cap gradually decreases in the direction from the second guide surface to the second welding contact surface; wherein, the height dimension of the second end face in the axial direction of the second electrode cap is 5mm-8mm.
[0044] In the above technical solution, the height of the second end face in the axial direction of the second electrode cap is set to 5mm-8mm, which helps to prevent the blade from falling out during the grinding process when the second welding contact surface of the second electrode cap is ground, thus improving the safety of the grinding process of the second electrode cap.
[0045] According to some embodiments of this application, the second electrode cap includes a second end face, the second end face includes a second guide surface and a second welding contact surface, the second guide surface is located on the outer periphery of the second electrode cap, and the diameter of the second electrode cap gradually decreases in the direction from the second guide surface to the second welding contact surface; the longitudinal section of the second guide surface is an arc, and the radius of the arc of the second guide surface is 8mm-16mm.
[0046] In the above technical solution, by making the longitudinal section of the second guide surface into an arc and setting the radius of the arc of the second guide surface to 8mm-16mm, the friction between the electrode cap and the grinding tool can be increased when grinding the first electrode cap, preventing the first electrode cap from wobbling left and right, thereby making the grinding process more stable, reducing the dimensional error of the first electrode cap, and improving the product quality of the first electrode cap.
[0047] According to some embodiments of this application, the angle between the central axis of the second electrode cap and the central axis of the first electrode cap is greater than 0°.
[0048] In the above technical solution, by making the angle between the central axis of the second electrode cap and the central axis of the first electrode cap greater than 0°, the constraint of the welding space can be reduced, making it easier for the second electrode cap to be pressed into the narrow bottom plate for welding.
[0049] According to some embodiments of this application, the angle between the central axis of the second electrode cap and the central axis of the first electrode cap is less than or equal to 15°.
[0050] In the above technical solution, by making the angle between the central axis of the second electrode cap and the central axis of the first electrode cap less than or equal to 15°, the constraint of the welding space can be reduced. This allows the second electrode cap to be more easily pressed into the narrow bottom plate for welding while maintaining good appearance quality.
[0051] According to some embodiments of this application, the diameter of the first electrode cap is larger than the diameter of the second electrode cap; or, the diameter of the first electrode cap is the same as the diameter of the second electrode cap.
[0052] In the above technical solution, by making the diameter of the first electrode cap larger than that of the second electrode cap, the appearance of the first electrode cap and the second electrode cap are different, which can avoid the risk of misinstallation of the first electrode cap and the second electrode cap.
[0053] According to some embodiments of this application, the diameter of the first electrode cap is φ13mm-φ22mm, and the diameter of the second electrode cap is φ10mm-φ16mm.
[0054] In the above technical solution, by setting the diameter of the first electrode cap to φ13mm-φ22mm and the diameter of the second electrode cap to φ10mm-φ16mm, the appearance of the first electrode cap and the second electrode cap are different, which can avoid the risk of misinstallation of the first electrode cap and the second electrode cap.
[0055] The welding apparatus according to a second aspect of this application includes: a welding torch according to a first aspect of this application.
[0056] According to the welding equipment of the embodiments of this application, by setting the welding torch of the first aspect of this application, the area of the first welding contact surface is larger than the area of the second welding contact surface. When welding the appearance side with the first welding contact surface and welding the non-appearance side with the second welding contact surface, the larger area of the first welding contact surface disperses the stress on the workpiece surface during the welding process. In cases where the gap between the workpiece sheet metal is large or the welding torch is not perpendicular, deformation is less likely to occur on the workpiece side welded with the first welding contact surface, thereby improving the appearance quality of the weld point on the appearance side of the workpiece. Since the areas of the first and second welding contact surfaces are different, the heat during the welding process is more concentrated, and less energy consumption can ensure better weld nugget strength, which is more conducive to the formation of the weld nugget, thereby enabling stable welding of thicker workpieces. By making the area of the second welding contact surface smaller, the constraint of the welding space on the second welding contact surface can be reduced, making it easier for the second electrode cap to be pressed into the bottom plate in a narrow space for welding, thereby improving the flexibility of welding.
[0057] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0058] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0059] Figure 1 This is a schematic diagram of a welding torch provided in one embodiment of this application;
[0060] Figure 2 This is a schematic diagram showing the interaction between the first electrode cap and the second electrode cap of the welding torch provided in an embodiment of this application and the workpiece;
[0061] Figure 3 This is a schematic diagram of the first electrode cap provided in an embodiment of this application;
[0062] Figure 4 This is a schematic diagram of the first electrode cap provided in another embodiment of this application;
[0063] Figure 5 This is a schematic diagram of the first electrode cap provided in another embodiment of this application;
[0064] Figure 6 This is a schematic diagram of the first electrode cap provided in another embodiment of this application;
[0065] Figure 7 This is a schematic diagram of the second electrode cap provided in one embodiment of this application;
[0066] Figure 8 This is a schematic diagram of the second electrode cap provided in another embodiment of this application.
[0067] Figure label:
[0068] 100. Welding torch;
[0069] 10. Welding torch body;
[0070] 20. First electrode rod;
[0071] 30. Second electrode rod;
[0072] 40. First electrode cap; 41. First welding contact surface; 401. Middle contact portion; 402. Outer ring contact portion; 43. First end face; 431. First guide surface; 432. Rounded corner surface;
[0073] 50. Second electrode cap; 51. Second welding contact surface; 53. Second end face; 531. Second guide surface;
[0074] 200. Workpiece. Detailed Implementation
[0075] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0076] The following is for reference. Figures 1-8 Describes a welding torch 100 according to an embodiment of this application.
[0077] refer to Figures 1-2According to a first aspect embodiment of this application, a welding torch 100 includes: a welding torch body 10, a first electrode rod 20, a second electrode rod 30, a first electrode cap 40, and a second electrode cap 50. The first electrode rod 20 and the second electrode rod 30 are disposed on the welding torch body 10, the first electrode cap 40 is disposed on the first electrode rod 20, and the second electrode cap 50 is disposed on the second electrode rod 30. The first electrode cap 40 and the second electrode cap 50 are disposed opposite to each other and spaced apart. The first electrode cap 40 has a first welding contact surface 41 for contacting a workpiece 200, and the second electrode cap 50 has a second welding contact surface 51 for contacting a workpiece 200. The area of the first welding contact surface 41 is larger than the area of the second welding contact surface 51.
[0078] For example, the first electrode rod 20 and the second electrode rod 30 are disposed on the welding gun body 10. The first electrode rod 20 and the second electrode rod 30 can be integrally formed with the welding gun 100, or the first electrode rod 20 and the second electrode rod 30 can be detachably connected to the welding gun body 10.
[0079] The first electrode rod 20 and the second electrode rod 30 play the role of conducting welding current during welding, so that the current passes through the first electrode cap 40, the second electrode cap 50 and the workpiece 200 to generate a welding arc, thereby realizing welding.
[0080] For example, the first electrode cap 40 is disposed on the first electrode rod 20, and the first electrode cap 40 and the first electrode rod 20 can be detachably connected by means of threaded connection or other means; the second electrode cap 50 is disposed on the second electrode rod 30, and the second electrode cap 50 and the second electrode rod 30 can be detachably connected by means of threaded connection or other means.
[0081] The first electrode cap 40 and the second electrode cap 50 are positioned opposite each other and spaced apart, allowing them to be clamped on both sides of the workpiece 200 in the thickness direction. Since the area of the first welding contact surface 41 is larger than the area of the second welding contact surface 51, the surface stress of the workpiece 200 welded to the first welding contact surface 41 is more dispersed relative to the surface of the workpiece 200 welded to the second welding contact surface 51. This makes the surface of the workpiece 200 welded to the first welding contact surface 41 less prone to deformation under the influence of external environmental factors such as the welding torch not being perpendicular to the workpiece 200.
[0082] When the first welding contact surface 41 and the second welding contact surface 51 are different, the current is smaller and the resistance heat is more concentrated during the welding of the workpiece 200. By making the first welding contact surface 41 and the second welding contact surface 51 different, the heat during the welding process is more concentrated, and less energy consumption can ensure better weld nugget strength, which is more conducive to the formation of weld nugget, thereby enabling stable welding of thicker workpieces 200.
[0083] By making the area of the second welding contact surface 51 smaller, the constraint of the welding space on the second welding contact surface 51 can be reduced, making it easier for the second electrode cap 50 to be pressed into the bottom plate in a narrow space for welding, such as the welding space of the water channel area on the side of a car, thereby improving the flexibility of welding.
[0084] According to the welding torch 100 of this application embodiment, by making the area of the first welding contact surface 41 larger than the area of the second welding contact surface 51, when the first welding contact surface 41 is used to weld the appearance side and the second welding contact surface 51 is used to weld the non-appearance side, the larger area of the first welding contact surface 41 disperses the stress on the surface of the workpiece 200 during the welding process. In cases where the gap between the sheet metal of the workpiece 200 is large or the welding torch 100 is not perpendicular, deformation is less likely to occur on the side of the workpiece 200 welded by the first welding contact surface 41, thereby improving the appearance quality of the weld point on the appearance side of the workpiece 200. Since the areas of the first welding contact surface 41 and the second welding contact surface 51 are different, the heat during the welding process is more concentrated, and less energy consumption can ensure better weld nugget strength, which is more conducive to the formation of weld nugget, thereby enabling stable welding of thicker workpieces 200. By making the area of the second welding contact surface 51 smaller, the constraint of the welding space on the second welding contact surface 51 can be reduced, making it easier for the second electrode cap 50 to be pressed into the bottom plate in a narrow space for welding, thereby improving the flexibility of welding.
[0085] refer to Figure 2 According to some embodiments of this application, the outer contour of the first welding contact surface 41 is a first outer contour, the outer contour of the second welding contact surface 51 is a second outer contour, both the first and second outer contours are circular, and the diameter of the first outer contour is larger than the diameter of the second outer contour.
[0086] In the above technical solution, by making the diameter of the first outer contour larger than the diameter of the second outer contour, when the first welding contact surface 41 is used to weld the appearance side and the second welding contact surface 51 is used to weld the non-appearance side, the larger area of the first welding contact surface 41 disperses the stress on the surface of the workpiece 200 during the welding process. Under conditions such as large gaps in the sheet metal of the workpiece 200 and non-perpendicular welding torch 100, deformation is less likely to occur on the side of the workpiece 200 welded on the first welding contact surface 41, thereby improving the appearance quality of the weld point on the appearance side of the workpiece 200. Since the areas of the first welding contact surface 41 and the second welding contact surface 51 are different, the heat during the welding process is more concentrated, and less energy consumption can ensure better weld nugget strength, which is more conducive to the formation of weld nugget, thereby enabling stable welding of thicker workpieces 200.
[0087] refer to Figure 2 According to some embodiments of this application, the diameter of the first outer contour is φ8mm-φ16mm, and the diameter of the second outer contour is φ3mm-φ12mm.
[0088] For example, the diameter of the first outer contour can be 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, etc., and the diameter of the first outer contour can be referred to as B1 in the figure; the diameter of the second outer contour can be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, etc., and the diameter of the second outer contour can be referred to as B2 in the figure.
[0089] In the above technical solution, by setting the diameter of the first outer contour to φ8mm-φ16mm and the diameter of the second outer contour to φ3mm-φ12mm, the areas of the first welding contact surface 41 and the second welding contact surface 51 are different, the heat during the welding process is more concentrated, and less energy consumption can ensure better weld nugget strength, which is more conducive to the formation of weld nugget, thereby enabling stable welding of thicker workpieces 200.
[0090] refer to Figures 3-6 According to some embodiments of this application, the first welding contact surface 41 is a plane, a sphere, or a combination of a plane and a sphere.
[0091] For example, the first welding contact surface 41 can be a plane, a sphere, or a combination of a plane and a sphere. These three technical options for the first welding contact surface 41 can be selected based on the workpiece 200 to be welded and the actual welding conditions.
[0092] For example, when the workpiece 200 to be welded is a thick plate workpiece 200 with high hardness, by setting the first welding contact surface 41 as a plane, the contact area between the first welding contact surface 41 and the plane to be welded of the workpiece 200 can be increased, thereby reducing the stress concentration of the workpiece 200 contacted by the first welding contact surface 41 and reducing the appearance defects of the weld point such as weld point distortion of the workpiece 200.
[0093] When the workpiece 200 to be welded is a thin plate workpiece 200 with low hardness, by setting the first welding contact surface 41 as a spherical surface, the spherical surface of the first welding contact surface 41 can be pressed into the surface of the workpiece 200 at the first contact point, absorbing a small portion of the stress and reducing weld joint distortion and other defects in weld joint appearance. When the workpiece 200 to be welded is a curved workpiece 200, by setting the first welding contact surface 41 as a spherical surface, the number of tiny dents on the surface of the workpiece 200 during welding can be reduced, thereby improving the appearance quality of the weld joint.
[0094] When the workpiece 200 to be welded is a curved surface, the first welding contact surface 41 can be set as a combination of a plane and a sphere, which can reduce the contact area between the first welding contact surface 41 and the curved surface of the workpiece 200 to be welded, thereby reducing welding energy consumption. When the perpendicularity between the welding torch electrode rod and the plane of the workpiece 200 to be welded is poor, the spherical surface of the outer ring of the plane can increase the contact area between the first welding contact surface 41 and the workpiece 200 to be welded, thereby reducing stress concentration and improving the appearance and quality of the weld joint.
[0095] In the above technical solutions, by setting the first welding contact surface 41 as a plane, the contact area between the first welding contact surface 41 and the workpiece 200 to be welded can be increased, thereby reducing the stress concentration generated by the workpiece 200 in contact with the first welding contact surface 41 and reducing weld point distortion and other poor weld appearance problems; or, by setting the first welding contact surface 41 as a sphere, the first contact point between the sphere of the first welding contact surface 41 and the workpiece 200 can be pressed into the surface of the workpiece 200 to absorb a small part of the stress, thereby reducing weld point distortion and other poor weld appearance problems; or, by setting the first welding contact surface 41 as a combination of a plane and a sphere, the contact area between the first welding contact surface 41 and the workpiece 200 to be welded can be reduced, thereby reducing welding energy consumption.
[0096] refer to Figures 7-8 According to some embodiments of this application, the second welding contact surface 51 is a plane or a spherical surface.
[0097] For example, the second welding contact surface 51 can be a plane or a sphere.
[0098] In the above technical solution, by setting the second welding contact surface 51 as a plane, it can be adapted to the welding of workpieces 200 with higher hardness. The surface of workpieces 200 with higher hardness is not easily deformed during welding, and the plane is more conducive to full contact with workpieces 200; or, by setting the second welding contact surface 51 as a spherical surface, it can be adapted to the welding of workpieces 200 with lower hardness. When welding workpieces 200 with lower hardness, the spherical surface is more conducive to full contact with workpieces 200 that are prone to deformation.
[0099] refer to Figure 5 According to some embodiments of this application, the first welding contact surface 41 includes a middle contact portion 401 and an outer ring contact portion 402. The outer ring contact portion 402 is disposed around the middle contact portion 401. The middle contact portion 401 is a plane and the outer ring contact portion 402 is a spherical surface.
[0100] In the above technical solution, by setting the first welding contact surface 41 as a spherical surface of the outer ring contact portion 402 surrounding the plane of the middle contact portion 401, the first welding contact surface 41 can be adapted to the welding of the curved workpiece 200. When welding the curved workpiece 200, the spherical surface surrounding the plane of the first welding contact surface 41 is more conducive to making full contact with the curved workpiece 200, which can reduce the welding heat input, thereby reducing the perpendicularity requirement between the electrode of the welding torch 100 and the plane to be welded of the workpiece 200.
[0101] refer to Figure 5 According to some embodiments of this application, the intermediate contact portion 401 is tangent to the outer ring contact portion 402.
[0102] The middle contact portion 401 is tangent to the outer ring contact portion 402, and the surfaces of the middle contact portion 401 and the outer ring contact portion 402 are smoothly connected.
[0103] In the above technical solution, by making the middle contact portion 401 tangent to the outer ring contact portion 402, the transition between the middle contact portion 401 and the outer ring contact portion 402 can be made smoother, reducing the reduction in the flatness of the welded joint of the workpiece 200 caused by the protrusion of the connection part between the middle contact portion 401 and the outer ring contact portion 402.
[0104] refer to Figure 5 According to some embodiments of this application, the intermediate contact portion 401 is circular, and the diameter of the intermediate contact portion 401 is φ6mm-φ10mm.
[0105] For example, the diameter of the intermediate contact portion 401 can be 6mm, 7mm, 8mm, 9mm, 10mm, etc. The diameter of the intermediate contact portion 401 can be referenced to C in the figure.
[0106] In the above technical solution, by setting the intermediate contact portion 401 as a circle with a diameter of φ6mm-φ10mm, it is easier to align the intermediate contact portion 401 of the first welding contact surface 41 with the position to be welded during the welding process of the workpiece 200, reducing the possibility of offset and misalignment, thereby improving the accuracy and stability of welding. This also reduces the heat input during welding and saves welding costs.
[0107] refer to Figure 5 According to some embodiments of this application, the ball radius of the outer ring contact portion 402 is SR30mm-SR200mm.
[0108] For example, the ball radius of the outer contact portion 402 can be SR30mm, SR60mm, SR90mm, SR120mm, SR150mm, SR180mm, SR200mm, etc., and the ball radius of the outer contact portion can be referenced to SR1 in the figure.
[0109] In the above technical solution, the sphere radius of the outer ring contact portion 402 is set to SR30mm-SR200mm, which enables the first welding contact surface 41 to adapt to the welding of the curved workpiece 200. When welding the curved workpiece 200, the contact surface of the sphere surrounding the plane is more conducive to making full contact with the curved workpiece 200, reducing local welding defects of the workpiece 200 caused by stress concentration during welding, thereby improving the appearance quality of the weld point.
[0110] refer to Figure 4 According to some embodiments of this application, the first welding contact surface 41 is a spherical surface, and the radius of the sphere of the first welding contact surface 41 is SR70mm-SR1000mm.
[0111] For example, the sphere radius of the first welding contact surface 41 can be SR70mm, SR100mm, SR200mm, SR300mm, SR500mm, SR700mm, SR800mm, SR1000mm, etc., and the sphere radius of the first welding contact surface 41 can be referenced to SR3 in the figure.
[0112] In the above technical solution, by setting the first welding contact surface 41 as a spherical surface with a radius of SR70mm-SR1000mm, it can be adapted to the welding of workpieces 200 with low hardness. When welding workpieces 200 with low hardness on the first welding contact surface 41, the spherical surface is more conducive to making full contact with workpieces 200 that are prone to deformation.
[0113] refer to Figure 7 According to some embodiments of this application, the second welding contact surface 51 is planar and circular, and the diameter of the second outer contour is φ3mm-φ8mm.
[0114] For example, the diameter of the second outer contour can be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, etc., and the diameter of the second outer contour can be B2 in the figure.
[0115] In the above technical solution, by setting the second welding contact surface 51 as a circular plane and setting the diameter of the second outer contour as φ3mm-φ8mm, it can be adapted to the welding of workpieces 200 with high hardness. The surface of the workpiece 200 with high hardness is not easily deformed during welding. When welding workpieces 200 with high hardness, the second welding contact surface 51 of the circular plane is more conducive to full contact with the workpiece 200.
[0116] refer to Figure 8 According to some embodiments of this application, the second welding contact surface 51 is a spherical surface with a sphere radius of SR30mm-SR200mm and a diameter of φ3mm-φ12mm for the second outer contour.
[0117] For example, the sphere radius of the second welding contact surface 51 can be SR30mm, SR60mm, SR90mm, SR120mm, SR150mm, SR180mm, SR200mm, etc., and the sphere radius of the second welding contact surface 51 can be referenced to SR2 in the figure; the diameter of the second outer contour can be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, etc., and the diameter of the second outer contour can be referenced to B2 in the figure.
[0118] In the above technical solution, by setting the second welding contact surface 51 as a spherical surface, and setting the spherical radius of the second welding contact surface 51 as SR30mm-SR200mm and the diameter of the second outer contour as φ3mm-φ12mm, it can be adapted to the welding of workpieces 200 with low hardness. The surface of the workpiece 200 with low hardness is more likely to deform during welding. When welding workpieces 200 with low hardness, the spherical second welding contact surface 51 is more conducive to making full contact with the workpiece 200 with low hardness.
[0119] refer to Figures 3-5 According to some embodiments of this application, the first electrode cap 40 includes a first end face 43, the first end face 43 includes a first guide surface 431, a rounded corner surface 432 and a first welding contact surface 41. The first guide surface 431 is located on the outer periphery of the first electrode cap 40, the rounded corner surface 432 is connected between the first guide surface 431 and the first welding contact surface 41, the first welding contact surface 41 is tangent to the rounded corner surface 432, and the diameter of the first electrode cap 40 gradually decreases in the direction from the first guide surface 431 to the first welding contact surface 41.
[0120] The first welding contact surface 41 is tangent to the rounded corner surface 432, meaning the surfaces of the first welding contact surface 41 and the rounded corner surface 432 are smoothly connected. The diameter of the first electrode cap 40 gradually decreases, meaning the vertical distance from the surface of the first electrode cap 40 to its axis gradually decreases.
[0121] In the above technical solution, by placing the first guide surface 431 on the outer periphery of the first electrode cap 40, it can play a guiding role when the grinding tool grinds the first electrode cap 40, and the first guide surface 431 can limit the grinding tool to prevent the blade of the grinding tool from falling out during the grinding process, thereby improving the safety of the grinding process of the first electrode cap 40.
[0122] The first electrode cap 40 is connected between the first guide surface 431 and the first welding contact surface 41 by a rounded corner surface 432. The first welding contact surface 41 is tangent to the rounded corner surface 432. In the direction from the first guide surface 431 to the first welding contact surface 41, the diameter of the first electrode cap 40 gradually decreases, making the grinding process of the first electrode cap 40 smoother, reducing the difficulty of grinding the first electrode cap 40, and also simplifying the processing of grinding tools and reducing costs.
[0123] refer to Figures 3-6 According to some embodiments of this application, the height dimension of the first end face 43 in the axial direction of the first electrode cap 40 is 5mm-12mm.
[0124] For example, the height dimension of the first end face 43 in the axial direction of the first electrode cap 40 can be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, etc., and the height dimension of the first end face 43 in the axial direction of the first electrode cap 40 can be referred to as H1 in the figure.
[0125] In the above technical solution, by setting the height of the first end face 43 in the axial direction of the first electrode cap 40 to 5mm-12mm, it is beneficial to prevent the blade from falling out during the grinding process of the first electrode cap 40, thereby improving the safety of the grinding process of the first electrode cap 40.
[0126] refer to Figures 3-5 According to some embodiments of this application, the longitudinal section of the first guide surface 431 is an arc, the radius of the arc of the first guide surface 431 is 8mm-16mm, the first guide surface 431 is tangent to the rounded corner surface 432, and the cross section obtained by cutting the first guide surface 431 with a plane passing through the central axis of the first electrode cap 40 is the longitudinal section of the first guide surface 431.
[0127] For example, the radius of the arc of the first guide surface 431 can be 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, etc. The radius of the arc of the first guide surface 431 can be referenced to R1 in the figure.
[0128] The first guide surface 431 is tangent to the rounded corner surface 432, and the surfaces of the first guide surface 431 and the rounded corner surface 432 are smoothly connected.
[0129] In the above technical solution, by setting the longitudinal section of the first guide surface 431 as an arc and the radius of the arc of the first guide surface 431 as 8mm-16mm, the first guide surface 431 is tangent to the rounded corner surface 432, making the grinding process of the first electrode cap 40 smoother, reducing the difficulty of grinding the first electrode cap 40, and also simplifying the processing of grinding tools and reducing costs.
[0130] refer to Figure 6 According to some embodiments of this application, the longitudinal section of the first guide surface 431 is a straight line, and the cross section obtained by cutting the first guide surface 431 with a plane passing through the central axis of the first electrode cap 40 is the longitudinal section of the first guide surface 431.
[0131] In the above technical solution, by setting the longitudinal section of the first guide surface 431 to a straight line, the structure is simple, which facilitates the processing and forming of the first motor cap. It can also limit the grinding tool when grinding the first electrode cap 40, prevent the blade from falling out during the grinding process, and improve the safety of the grinding process of the first electrode cap 40.
[0132] refer to Figures 3-6 According to some embodiments of this application, the radius of curvature of the rounded corner surface 432 is 0.5mm-3mm.
[0133] For example, the radius of the rounded corner surface 432 can be 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, etc. The radius of the rounded corner surface 432 can be referenced from r in the figure.
[0134] In the above technical solution, by setting the radius of the rounded corner surface 432 to 0.5mm-3mm, the friction between the electrode cap and the grinding tool can be increased when grinding the first electrode cap 40, preventing the first electrode cap 40 from wobbling left and right, thereby making the grinding process more stable, reducing the dimensional error of the first electrode cap 40, and improving the product quality of the first electrode cap 40.
[0135] refer to Figures 3-6 According to some embodiments of this application, the height dimension of the rounded corner surface 432 in the axial direction of the first electrode cap 40 is 0.3-5mm.
[0136] For example, the height dimension of the rounded corner surface 432 in the axial direction of the first electrode cap 40 can be 0.3mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, etc. The height dimension of the rounded corner surface 432 in the axial direction of the first electrode cap 40 can be referred to as h in the figure.
[0137] In the above technical solution, by setting the height of the rounded corner surface 432 in the axial direction of the first electrode cap 40 to 0.3-5mm, the friction between the electrode cap and the grinding tool can be increased when grinding the first electrode cap 40, preventing the first electrode cap 40 from wobbling left and right, thereby making the grinding process more stable, reducing the dimensional error of the first electrode cap 40, and improving the product quality of the first electrode cap 40.
[0138] refer to Figures 7-8According to some embodiments of this application, the second electrode cap 50 includes a second end face 53, the second end face 53 includes a second guide surface 531 and a second welding contact surface 51, the second guide surface 531 is located on the outer periphery of the second electrode cap 50, and the diameter of the second electrode cap 50 gradually decreases in the direction from the second guide surface 531 to the second welding contact surface 51; wherein, the height dimension of the second end face 53 in the axial direction of the second electrode cap 50 is 5mm-8mm.
[0139] For example, the height dimension of the second end face 53 in the axial direction of the second electrode cap 50 can be 5mm, 6mm, 7mm, 8mm, etc., and the height dimension of the second end face 53 in the axial direction of the second electrode cap 50 can be referred to as H2 in the figure.
[0140] In the direction from the second guide surface 531 to the second welding contact surface 51, the diameter of the second electrode cap 50 gradually decreases, and the vertical distance from the surface of the second electrode cap 50 to the axis of the second electrode cap 50 gradually decreases.
[0141] In the above technical solution, the height of the second end face 53 in the axial direction of the second electrode cap 50 is set to 5mm-8mm, which helps to prevent the blade from falling out during the grinding process of the second electrode cap 50 and improves the safety of the grinding process of the second electrode cap 50.
[0142] refer to Figures 7-8 According to some embodiments of this application, the second electrode cap 50 includes a second end face 53, the second end face 53 includes a second guide surface 531 and a second welding contact surface 51, the second guide surface 531 is located on the outer periphery of the second electrode cap 50, and the diameter of the second electrode cap 50 gradually decreases in the direction from the second guide surface 531 to the second welding contact surface 51; the longitudinal section of the second guide surface 531 is an arc, the radius of the arc of the second guide surface 531 is 8mm-16mm, and the cross section obtained by cutting the second guide surface 531 with a plane passing through the central axis of the second electrode cap 50 is the longitudinal section of the second guide surface 531.
[0143] For example, the radius of the arc of the second guide surface 531 can be 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, etc. The radius of the arc of the second guide surface 531 can be referenced to R2 in the figure.
[0144] In the direction from the second guide surface 531 to the second welding contact surface 51, the diameter of the second electrode cap 50 gradually decreases, and the vertical distance from the surface of the second electrode cap 50 to the axis of the second electrode cap 50 gradually decreases.
[0145] In the above technical solution, by setting the longitudinal section of the second guide surface 531 as an arc and setting the radius of the arc of the second guide surface 531 as 8mm-16mm, the friction between the electrode cap and the grinding tool can be increased when grinding the second electrode cap 50, preventing the second electrode cap 50 from wobbling left and right, thereby making the grinding process more stable, reducing the dimensional error of the second electrode cap 50, and improving the product quality of the second electrode cap 50.
[0146] refer to Figure 2 According to some embodiments of this application, the angle between the central axis of the second electrode cap 50 and the central axis of the first electrode cap 40 is greater than 0°.
[0147] For example, the angle between the central axis of the second electrode cap 50 and the central axis of the first electrode cap 40 can be 1°, 2°, 3°, 4°, 5°, etc. The angle between the central axis of the second electrode cap 50 and the central axis of the first electrode cap 40 can be referenced to α in the figure.
[0148] In the above technical solution, by making the angle between the central axis of the second electrode cap 50 and the central axis of the first electrode cap 40 greater than 0°, the constraint of the welding space can be reduced, making it easier for the second electrode cap 50 to be pressed into the narrow bottom plate for welding.
[0149] refer to Figure 2 According to some embodiments of this application, the angle between the central axis of the second electrode cap 50 and the central axis of the first electrode cap 40 is less than or equal to 15°.
[0150] For example, the angle between the central axis of the second electrode cap 50 and the central axis of the first electrode cap 40 can be 10°, 11°, 12°, 13°, 14°, 15°, etc. The angle between the central axis of the second electrode cap 50 and the central axis of the first electrode cap 40 can be referenced to α in the figure.
[0151] In the above technical solution, by making the angle between the central axis of the second electrode cap 50 and the central axis of the first electrode cap 40 less than or equal to 15°, the constraint of the welding space can be reduced. This allows the second electrode cap 50 to be more easily pressed into the narrow bottom plate for welding while maintaining good appearance quality.
[0152] refer to Figure 2 According to some embodiments of this application, the diameter of the first electrode cap 40 is greater than the diameter of the second electrode cap 50; or, the diameter of the first electrode cap is the same as the diameter of the second electrode cap.
[0153] In the above technical solution, by setting the diameter of the first electrode cap 40 to be larger than the diameter of the second electrode cap 50, the appearance of the first electrode cap 40 and the second electrode cap 50 are different, which can avoid the risk of misinstallation of the first electrode cap 40 and the second electrode cap 50.
[0154] According to some embodiments of this application, the diameter of the first electrode cap 40 is φ13mm-φ22mm, and the diameter of the second electrode cap 50 is φ10mm-φ16mm.
[0155] For example, the diameter of the first electrode cap 40 can be 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, etc., and the diameter of the first electrode cap 40 can be referred to as A1 in the figure; the diameter of the second electrode cap 50 can be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, etc., and the diameter of the second electrode cap 50 can be referred to as A2 in the figure.
[0156] In the above technical solution, by setting the diameter of the first electrode cap 40 to φ13mm-φ22mm and the diameter of the second electrode cap 50 to φ10mm-φ16mm, the appearance of the first electrode cap 40 and the second electrode cap 50 are different, which can avoid the risk of misinstallation of the first electrode cap 40 and the second electrode cap 50.
[0157] The welding apparatus according to a second aspect of the present application includes: a welding torch 100 according to a first aspect of the present application.
[0158] According to the welding equipment of the embodiments of this application, by setting the welding torch 100 of the first aspect of this application so that the area of the first welding contact surface 41 is larger than the area of the second welding contact surface 51, when the first welding contact surface 41 is used to weld the appearance side and the second welding contact surface 51 is used to weld the non-appearance side, the larger area of the first welding contact surface 41 disperses the stress on the surface of the workpiece 200 during the welding process. Even when the gap between the workpiece 200 sheet metal is large or the welding torch 100 is not perpendicular, it is less likely that deformation will occur on the side of the workpiece 200 welded on the first welding contact surface 41. The shape improves the appearance quality of the weld points on the outer side of the workpiece 200. Since the areas of the first welding contact surface 41 and the second welding contact surface 51 are different, the heat during the welding process is more concentrated, and less energy consumption can ensure better weld nugget strength, which is more conducive to the formation of weld nugget, thus enabling stable welding of thicker workpieces 200. By making the area of the second welding contact surface 51 smaller, the constraint of the welding space on the second welding contact surface 51 can be reduced, making it easier for the second electrode cap 50 to be pressed into the bottom plate in the narrow space for welding, which can improve the flexibility of welding.
[0159] The following reference Figures 3-6A first electrode cap 40 is described according to some embodiments of this application.
[0160] refer to Figure 3 This is a schematic diagram of the first electrode cap 40 provided in one embodiment of this application. In this embodiment, the first electrode cap 40 includes a first end face 43, which includes a first guide surface 431, a rounded corner surface 432, and a first welding contact surface 41. The first guide surface 431 is located on the outer periphery of the first electrode cap 40. The rounded corner surface 432 connects the first guide surface 431 and the first welding contact surface 41. The first welding contact surface 41 is tangent to the rounded corner surface 432. The diameter of the first electrode cap 40 gradually decreases in the direction from the first guide surface 431 to the first welding contact surface 41. The first welding contact surface 41 is a plane, and its outer contour is the first outer contour. The cross-section obtained by cutting the first guide surface 431 with a plane passing through the central axis of the first electrode cap 40 is the longitudinal section of the first guide surface 431. The longitudinal section of the first guide surface 431 is an arc, and the first guide surface 431 is tangent to the rounded corner surface 432.
[0161] refer to Figure 4 This is a schematic diagram of the first electrode cap 40 provided in another embodiment of this application. In this embodiment, the first electrode cap 40 includes a first end face 43, which includes a first guide surface 431, a rounded corner surface 432, and a first welding contact surface 41. The first guide surface 431 is located on the outer periphery of the first electrode cap 40. The rounded corner surface 432 connects the first guide surface 431 and the first welding contact surface 41. The first welding contact surface 41 is tangent to the rounded corner surface 432. In the direction from the first guide surface 431 to the first welding contact surface 41, the diameter of the first electrode cap 40 gradually decreases. The first welding contact surface 41 is spherical, and its outer contour is the first outer contour. The cross-section obtained by cutting the first guide surface 431 with a plane passing through the central axis of the first electrode cap 40 is the longitudinal section of the first guide surface 431, which is a straight line.
[0162] refer to Figure 5This is a schematic diagram of the first electrode cap 40 provided in another embodiment of this application. In this embodiment, the first electrode cap 40 includes a first end face 43, which includes a first guide surface 431, a rounded corner surface 432, and a first welding contact surface 41. The first guide surface 431 is located on the outer periphery of the first electrode cap 40. The rounded corner surface 432 connects the first guide surface 431 and the first welding contact surface 41. The first welding contact surface 41 is tangent to the rounded corner surface 432. In the direction from the first guide surface 431 to the first welding contact surface 41, the diameter of the first electrode cap 40 gradually decreases. The first welding contact surface 41 is a combination of a plane and a sphere. The outer contour of the first welding contact surface 41 is a first outer contour. The first welding contact surface 41 includes a middle contact portion 401 and an outer ring contact portion 402. The outer ring contact portion 402 is disposed around the middle contact portion 401. The middle contact portion 401 is circular, and the outer ring contact portion 402 is spherical. The middle contact portion 401 and the outer ring contact portion 402 are tangent. The cross section obtained by cutting the first guide surface 431 with a plane passing through the central axis of the first electrode cap 40 is the longitudinal section of the first guide surface 431. The longitudinal section of the first guide surface 431 is a circular arc, and the first guide surface 431 is tangent to the rounded corner surface 432.
[0163] refer to Figure 6 This is a schematic diagram of the first electrode cap 40 provided in another embodiment of this application. In this embodiment, the first electrode cap 40 includes a first end face 43, which includes a first guide surface 431, a rounded corner surface 432, and a first welding contact surface 41. The first guide surface 431 is located on the outer periphery of the first electrode cap 40. The rounded corner surface 432 connects the first guide surface 431 and the first welding contact surface 41. The first welding contact surface 41 is tangent to the rounded corner surface 432. In the direction from the first guide surface 431 to the first welding contact surface 41, the diameter of the first electrode cap 40 gradually decreases. The first welding contact surface 41 is a plane, and the outer contour of the first welding contact surface 41 is the first outer contour. The cross-section obtained by cutting the first guide surface 431 with a plane passing through the central axis of the first electrode cap 40 is the longitudinal section of the first guide surface 431, and the longitudinal section of the first guide surface 431 is a straight line.
[0164] The following reference Figures 7-8 The second electrode cap 50 is described according to some embodiments of this application.
[0165] refer to Figure 7This is a schematic diagram of the second electrode cap 50 provided in an embodiment of this application. In this embodiment, the second electrode cap 50 includes a second end face 53, the second end face 53 includes a second guide surface 531 and a second welding contact surface 51. The second guide surface 531 is located on the outer periphery of the second electrode cap 50. In the direction from the second guide surface 531 to the second welding contact surface 51, the diameter of the second electrode cap 50 gradually decreases. The longitudinal section of the second guide surface 531 is an arc. The second welding contact surface 51 is planar and circular. The outer contour of the second welding contact surface 51 is a second outer contour.
[0166] refer to Figure 8 This is a schematic diagram of the second electrode cap 50 provided in another embodiment of this application. In this embodiment, the second electrode cap 50 includes a second end face 53, the second end face 53 includes a second guide surface 531 and a second welding contact surface 51. The second guide surface 531 is located on the outer periphery of the second electrode cap 50. In the direction from the second guide surface 531 to the second welding contact surface 51, the diameter of the second electrode cap 50 gradually decreases. The longitudinal section of the second guide surface 531 is an arc, the second welding contact surface 51 is a spherical surface, and the outer contour of the second welding contact surface 51 is a second outer contour.
[0167] In this application, "multiple" refers to two or more.
[0168] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0169] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0170] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0171] Unless otherwise specified, all steps in this application may be performed sequentially or randomly. For example, if the method includes steps A and B, it means that the method may include steps A and B performed sequentially, or it may include steps B and A performed sequentially. For example, if the method may also include step C, it means that step C may be added to the method in any order. For example, the method may include steps A, B, and C, or it may include steps A, C, and B, or it may include steps C, A, and B, etc.
[0172] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A welding torch, characterized in that, include: Welding torch body; The first electrode rod and the second electrode rod are disposed on the welding gun body; A first electrode cap and a second electrode cap are provided on the first electrode rod and the second electrode cap is provided on the second electrode rod. The first electrode cap and the second electrode cap are arranged opposite to each other and spaced apart. The first electrode cap has a first welding contact surface for contacting the workpiece and the second electrode cap has a second welding contact surface for contacting the workpiece. The area of the first welding contact surface is larger than the area of the second welding contact surface.
2. The welding torch according to claim 1, characterized in that, The outer contour of the first welding contact surface is called the first outer contour, and the outer contour of the second welding contact surface is called the second outer contour. Both the first and second outer contours are circular, and the diameter of the first outer contour is larger than the diameter of the second outer contour.
3. The welding torch according to claim 2, characterized in that, The diameter of the first outer contour is φ8mm-φ16mm, and the diameter of the second outer contour is φ3mm-φ12mm.
4. The welding torch according to claim 2, characterized in that, The first welding contact surface is a plane, a sphere, or a combination of a plane and a sphere; the second welding contact surface is a plane or a sphere.
5. The welding torch according to claim 4, characterized in that, The first welding contact surface includes a middle contact portion and an outer ring contact portion, the outer ring contact portion being arranged around the middle contact portion, the middle contact portion being a plane, and the outer ring contact portion being a spherical surface.
6. The welding torch according to claim 5, characterized in that, The middle contact portion is circular, and the diameter of the middle contact portion is φ6mm-φ10mm; the sphere radius of the outer ring contact portion is SR30mm-SR200mm.
7. The welding torch according to claim 4, characterized in that, The first welding contact surface is a spherical surface, and the radius of the sphere of the first welding contact surface is SR70mm-SR1000mm.
8. The welding torch according to claim 4, characterized in that, The second welding contact surface is planar and circular, and the diameter of the second outer contour is φ3mm-φ8mm; or, the second welding contact surface is spherical, the radius of the sphere of the second welding contact surface is SR30mm-SR200mm, and the diameter of the second outer contour is φ3mm-φ12mm.
9. The welding torch according to any one of claims 1-8, characterized in that, The first electrode cap includes a first end face, which includes a first guide surface, a rounded corner surface, and a first welding contact surface. The first guide surface is located on the outer periphery of the first electrode cap, and the rounded corner surface is connected between the first guide surface and the first welding contact surface. The first welding contact surface is tangent to the rounded corner surface. In the direction from the first guide surface to the first welding contact surface, the diameter of the first electrode cap gradually decreases.
10. The welding torch according to claim 9, characterized in that, The height of the first end face in the axial direction of the first electrode cap is 5mm-12mm.
11. The welding torch according to claim 9, characterized in that, The longitudinal section of the first guide surface is an arc, the radius of the arc of the first guide surface is 8mm-16mm, and the first guide surface is tangent to the rounded corner surface; or, the longitudinal section of the first guide surface is a straight line.
12. The welding torch according to any one of claims 1-8, characterized in that, The second electrode cap includes a second end face, the second end face includes a second guide surface and a second welding contact surface, the second guide surface is located on the outer periphery of the second electrode cap, and the diameter of the second electrode cap gradually decreases in the direction from the second guide surface to the second welding contact surface; Wherein, the height dimension of the second end face in the axial direction of the second electrode cap is 5mm-8mm; and / or, the longitudinal section of the second guide surface is an arc, and the radius of the arc of the second guide surface is 8mm-16mm.
13. The welding torch according to any one of claims 1-8, characterized in that, The angle between the central axis of the second electrode cap and the central axis of the first electrode cap is greater than 0° and less than or equal to 15°.
14. The welding torch according to any one of claims 1-8, characterized in that, The diameter of the first electrode cap is greater than the diameter of the second electrode cap; or, the diameter of the first electrode cap is the same as the diameter of the second electrode cap.
15. A welding device, characterized in that, include: The welding torch according to any one of claims 1-14.