Hand-held welding device and welding system

Abstract

The application discloses a handheld welding device and a welding system, and relates to the technical field of laser welding. The handheld welding device comprises a welding gun and a frame body. The frame body is installed on the welding gun and comprises a supporting piece and a rolling piece. The frame body is arranged on the welding gun and is arranged close to a gun barrel of the welding gun, and the rolling piece is arranged on one end of the frame body far from the welding gun. A recess part arranged in a ring shape is formed on a rolling surface of the rolling piece, and the recess part can be embedded on a workpiece. The welding gun is moved by rolling of the rolling piece at an outside corner welding head, sliding friction between the workpiece and the welding gun is changed into rolling friction, friction between the frame body and the workpiece is reduced, welding efficiency is improved, deviation of a welding position of the welding gun from the workpiece is prevented, and welding accuracy is improved. In addition, in a welding process, the welding gun is moved by rolling of the rolling piece at the outside corner welding head, an operator does not need to completely lift the welding gun for operation, the welding process is more relaxed, and welding efficiency is further improved.

Description

Technical Field

[0001] This application relates to the field of laser welding technology, and more particularly to a handheld welding device and welding system. Background Technology

[0002] External corner welding is a common welding technique mainly used for connecting metal structural components. This welding method is suitable for handling the external corners of workpieces (i.e., two components intersect at a corner, with one component located outside the other).

[0003] Existing handheld welding torches typically have an auxiliary support attached to the bottom to help align the welding torch with the workpiece at the weld joint. During welding, sliding friction occurs between the auxiliary support and the workpiece, which can easily cause welding misalignment between the handheld welding torch and the workpiece, affecting the smoothness of the weld. Utility Model Content

[0004] In view of this, this application provides a handheld welding device and welding system, which aims to solve one of the technical problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] A handheld welding device includes a welding torch and a frame. The frame is mounted on the welding torch to assist the welding torch in welding operations at the external corners of a workpiece. The frame includes a support member and a rolling member. The frame is disposed on the welding torch and near the torch shaft. The rolling member is disposed on the end of the frame away from the welding torch. An annular recess is formed on the rolling surface of the rolling member, which can engage with the workpiece to prevent the relative position of the welding torch and the workpiece from shifting during welding.

[0007] Furthermore, the rolling element is configured as a bearing, the recess is located at the center of the rolling surface of the bearing, and the cross-section of the recess is V-shaped to facilitate the positioning of the bearing and the workpiece.

[0008] Furthermore, the recessed portion has a first inclined surface and a second inclined surface that are spaced apart from each other. In the radial direction away from the centerline of the recessed portion, the distance between the first inclined surface and the second inclined surface gradually increases; and / or, the plane containing the first inclined surface and the plane containing the second inclined surface form an included angle α, satisfying 30 ≤ α ≤ 120°.

[0009] Furthermore, the welding torch includes a light-emitting section, a torch rod is provided on the light-emitting section, and a welding nozzle is provided on the torch rod at a position away from the light-emitting section. A wire feeder is provided on the frame, the wire feeder passes through the frame, and the end of the wire feeder is located near the welding nozzle.

[0010] Furthermore, the welding torch includes a light-emitting section with a light-emitting port facing the frame. The frame is equipped with a wire feeder and an air-blowing device. The wire feeder passes through the frame, and its end is positioned near the focal point of the laser beam emitted from the light-emitting port. The air-blowing device passes through the frame, and its end is also positioned near the focal point of the laser beam, for blowing air onto the welding position to remove spatter.

[0011] Furthermore, the welding torch is also provided with a gas path structure, which includes a gas hole. The gas hole is located on the welding torch near the light outlet. The gas hole can blow air out of the welding torch along the welding path of the laser beam to prevent the spatter from contacting the protective mirror at the light outlet.

[0012] Furthermore, the support includes a first connecting arm and a second connecting arm. The first connecting arm is disposed on the welding torch and extends away from the welding torch. The second connecting arm is mounted on the end of the first connecting arm away from the welding torch.

[0013] Furthermore, both the wire feeder and the air blowing member are mounted on the second connecting arm, and an included angle β is formed between the first connecting arm and the second connecting arm, wherein the included angle β satisfies 60≤β≤180°.

[0014] Furthermore, the first connecting arm is hinged to the welding torch, and the first connecting arm and the welding torch can be relatively fixed together.

[0015] This application also provides a welding system including the handheld welding device described in any of the above embodiments.

[0016] Compared to existing technologies, the beneficial effects of this application are:

[0017] This application discloses a handheld welding device, including a welding torch and a frame. The frame is mounted on the welding torch to assist the welding torch in welding operations at the external corners of the workpiece. The frame includes a support member and a rolling member. The frame is disposed on the welding torch and is located near the torch shaft. The rolling member is disposed on the end of the frame away from the welding torch. An annular recess is formed on the rolling surface of the rolling member, which can engage with the workpiece to prevent the relative position of the welding torch and the workpiece from shifting during the welding process.

[0018] By using a rolling element to move the welding torch at the outer corner weld joint, the sliding friction between the workpiece and the welding torch is changed to rolling friction. This reduces the friction between the frame and the workpiece, improves welding efficiency, and prevents the welding torch from shifting off-center from the workpiece, thus improving welding accuracy. Furthermore, during the welding process, the rolling element moves the welding torch at the outer corner weld joint, eliminating the need for the operator to fully lift the torch, making the welding process easier and further improving welding efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of a handheld welding device provided in one embodiment of this application;

[0021] Figure 2 A schematic diagram of the structure of a handheld welding device provided in yet another embodiment of this application;

[0022] Figure 3 This invention provides a schematic diagram of the frame structure from one perspective in one embodiment of the present application.

[0023] Figure 4 This invention provides another perspective view of the frame structure in one embodiment of the present application.

[0024] Figure 5 A cross-sectional view of the light-emitting section in one embodiment of this application is shown.

[0025] Explanation of key component symbols: 100 - Handheld welding device;

[0026] 110-Welding torch; 111-Light emission section; 112-Handheld part; 113-Laser beam; 1111-Protective lens; 114-Ventilation hole; 115-Gun shaft; 1151-Welding nozzle;

[0027] 120 - Frame; 121 - Support member; 122 - Rolling member; 1221 - Rolling surface; 1222 - Recess; 12221 - First inclined surface; 12222 - Second inclined surface; 1211 - First connecting arm; 1212 - Second connecting arm; 12123 - First clamping structure; 12124 - Second clamping structure;

[0028] 130 - Wire feeding component; 140 - Air blowing component. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] This application provides a handheld welding device to solve the problems in related technologies, such as the welding torch and the workpiece being prone to welding position misalignment and low welding smoothness.

[0035] Please see Figures 1 to 3 A handheld welding device 100 includes a welding torch 110 and a frame 120. The frame 120 is mounted on the welding torch 110 to assist the welding torch 110 in welding operations at the external corners of the workpiece. The frame 120 includes a support member 121 and a rolling member 122. The frame 120 is disposed on the welding torch 110 and near the torch shaft 115 of the welding torch 110. The rolling member 122 is disposed on the end of the frame 120 away from the welding torch 110. An annular recess 1222 is formed on the rolling surface 1221 of the rolling member 122. The recess 1222 can be engaged with the workpiece to prevent the relative position of the welding torch 110 and the workpiece from shifting during the welding process.

[0036] Specifically, when welding a workpiece using this embodiment, the operator holds the welding torch 110 and places the rolling element 122 on the frame 120 against the workpiece. The rolling element 122 has a recess 1222 that fits into the workpiece. By engaging with the workpiece, the recess 1222 restricts the relative position between the welding torch 110 and the workpiece, improving the accuracy of the welding operation and preventing the relative position between the welding torch 110 and the workpiece from shifting, thus avoiding any impact on the welding position.

[0037] Furthermore, in related technologies, when the welding torch 110 needs to be displaced, the auxiliary support 121 of the welding torch 110 abuts against the workpiece, resulting in sliding friction between the auxiliary support 121 and the workpiece during movement. In this embodiment, the rolling element 122 is rotatably mounted on the frame 120. When the welding torch 110 needs to be displaced, it can be moved directly. The rolling element 122 and the workpiece experience rolling friction, which, compared to related technologies, not only results in lower friction but also a smoother movement process, thereby effectively improving the smoothness and accuracy of welding in this embodiment.

[0038] In one embodiment, exemplarily, such as Figure 3 , Figure 4 As shown, the rolling element 122 is configured as a bearing, and the recess 1222 is located at the center of the rolling surface 1221 of the bearing. The cross-section of the recess 1222 is V-shaped to facilitate the positioning of the bearing and the workpiece. After the bearing abuts against the workpiece, the V-shaped recess 1222 is embedded in the workpiece, restricting the relative position between the welding torch 110 and the workpiece to ensure accurate welding position.

[0039] Understandably, a V-shape is suitable for workpieces with sharp corners. Correspondingly, if welding is required for workpieces of different shapes, the recess 1222 can also be adapted to other shapes. For example, if the cross-section of the recess 1222 is set to an arc shape, it is suitable for workpieces with circular arcs.

[0040] In one embodiment, exemplarily, such as Figure 3 , Figure 4 As shown, the recess 1222 has a first inclined surface 12221 and a second inclined surface 12222 that are spaced apart from each other. In the radial direction away from the centerline of the recess 1222, the distance between the first inclined surface 12221 and the second inclined surface 12222 gradually increases; and / or, the plane containing the first inclined surface 12221 and the plane containing the second inclined surface 12222 form an included angle α, satisfying 30 ≤ α ≤ 120°.

[0041] The angle α formed between the plane containing the first inclined plane 12221 and the plane containing the second inclined plane 12222 can be 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, etc., which is not limited to the example degrees.

[0042] The included angle α changes with the angle at each of the workpiece's external corners. When the angle at each of the workpiece's external corners increases, the included angle α increases; when the angle at each of the workpiece's external corners decreases, the included angle α decreases.

[0043] It is understood that the rolling element 122 of this application can not only engage with the external corner of the workpiece and roll along the length direction of the external corner of the workpiece, but the rolling element 122 of this application is also suitable for rolling on a flat workpiece. The rolling element 122 rolls with the workpiece plane, and the frictional resistance generated by the rolling is less than the sliding friction between the auxiliary support 121 and the workpiece surface in the related technology, ensuring that the welding speed and smoothness of this embodiment are better than those of the auxiliary support 121 in the related technology.

[0044] In one embodiment, exemplarily, such as Figure 1 As shown, the welding torch 110 includes a light-emitting section 111, a torch rod 115 mounted on the light-emitting section 111, and a welding nozzle 1151 mounted on the torch rod 115 at a position away from the light-emitting section 111. A wire feeder 130 is mounted on the frame 120, passing through the frame 120, with its end positioned near the welding nozzle 1151. The laser beam 113 emitted from the light-emitting section 111 passes through the torch rod 115 and exits from the welding nozzle 1151. The wire feeder 130, mounted on the frame 120, can directly feed the welding wire to the welding nozzle 1151, ensuring the reliability and stability of the welding operation in this embodiment.

[0045] In one embodiment, exemplarily, such as Figure 2As shown, the welding torch 110 includes a light-emitting section 111, with a light-emitting port on the light-emitting section 111 facing the frame 120. The frame 120 is equipped with a wire feeder 130 and an air blower 140. The wire feeder 130 passes through the frame 120, and its end is positioned near the focal point of the laser beam 113 emitted from the light-emitting port. The air blower 140 passes through the frame 120, and its end is positioned near the focal point of the laser beam 113, used to blow air onto the welding position to remove spatter.

[0046] Specifically, during the welding process, welding slag or other spatter may be ejected from the welding point. If the spatter is not treated, it may adhere to the welding nozzle 1151 and block it. Alternatively, the spatter may enter the gun barrel 115 and adhere to the protective lens 1111 at the light outlet, affecting the normal operation of the protective lens 1111. If a large amount of metal particles accumulate on the protective lens 1111, it may even burn out the protective lens 1111, causing damage to the welding gun 110.

[0047] In this embodiment, the welding torch 110 does not have a torch handle 115, reducing its overall weight and making it easier for the operator to hold. An air blower 140 is installed on the frame 120. During welding, the air blower 140 continuously blows air towards the welding position, effectively deflecting spatter away from the welding torch 110 and preventing it from contacting the protective lens 1111, thus protecting the protective lens 1111. Furthermore, eliminating the torch handle 115 also eliminates concerns about spatter accumulating at the welding nozzle 1151 and affecting the laser beam 113, making this embodiment more practical.

[0048] The wire feeder 130 is positioned close to the focal point of the laser beam 113, which can effectively improve the welding quality. The air blower 140 is also positioned close to the focal point of the laser beam 113, which can blow away the spatter as soon as it is generated, ensuring the protective capability of the air blower 140 in this embodiment.

[0049] In one embodiment, exemplarily, such as Figure 2 , Figure 5 As shown, the welding torch 110 is also provided with an air path structure, which includes an air hole 114. The air hole 114 is located on the welding torch 110 near the light outlet. The air hole 114 can blow air out of the welding torch 110 along the welding path of the laser beam 113 to prevent spatter from contacting the protective mirror 1111 at the light outlet. By providing an air path structure on the welding torch 110 and blowing air along the direction of the laser beam 113, on the one hand, it can prevent sporadic impurities floating in the outside air from affecting the laser beam 113. On the other hand, in this embodiment, the airflow blown out by the air hole 114 can also blow the spatter generated at the welding point away from the protective mirror 1111, thus protecting the protective mirror 1111.

[0050] Furthermore, the air hole 114 in this embodiment can also cooperate with the air blowing component 140 on the frame 120 to blow air towards the welding point from different directions, preventing spatter from splashing towards the protective mirror 1111, and improving the protective capability and effect of the air circuit structure and the air blowing component 140 on the protective mirror 1111.

[0051] Understandably, the gas path structure on the welding torch 110 can be set in multiple ways, and these multiple gas path structures are evenly distributed along the circumference of the protective mirror 1111, thereby further improving the protective effect on the protective mirror 1111.

[0052] In one embodiment, exemplarily, such as Figure 3 , Figure 4 As shown, the support member 121 includes a first connecting arm 1211 and a second connecting arm 1212. The first connecting arm 1211 is disposed on the welding torch 110 and extends away from the welding torch 110. The second connecting arm 1212 is mounted on the end of the first connecting arm 1211 away from the welding torch 110. In this embodiment, if the welding torch 110 is not equipped with a torch rod 115, the focal point of the laser beam 113 is usually set at a position away from the welding torch 110 to facilitate safe and reliable welding operations. Based on this, the second connecting arm 1212 is disposed on the first connecting arm 1211 at a position away from the welding torch 110. The air blowing component 140, the wire feeder 130, etc., are disposed on the second connecting arm 1212, so that the output ends of the air blowing component 140 and the wire feeder 130 can be set close to the focal point of the laser beam 113, thereby ensuring that the welding operation can be carried out normally and stably, improving welding efficiency, improving welding quality, and enhancing the practicality of this embodiment.

[0053] In one embodiment, exemplarily, such as Figure 3 , Figure 4 As shown, the wire feeder 130 and the air blowing component 140 are both mounted on the second connecting arm 1212. An included angle β is formed between the first connecting arm 1211 and the second connecting arm 1212, and the included angle β satisfies 60≤β≤180°. By changing the included angle β, the angle between the first connecting arm 1211 and the second connecting arm 1212 is changed, thereby adjusting the distance between the welding torch 110 and the workpiece at the external corner, that is, adjusting the distance between the welding torch 110 and the workpiece. This allows the welding torch 110 of this embodiment to be flexibly adjusted according to the different working conditions of different workpieces, ensuring that the frame 120 can always properly abut against the workpiece, further improving the practicality and applicability of this embodiment.

[0054] Of course, the included angle β formed between the first connecting arm 1211 and the second connecting arm 1212 can be set to 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 180°, etc., which are not limited to the degrees in the example, depending on the actual situation.

[0055] In one embodiment, exemplarily, such as Figure 3 , Figure 4 As shown, the first connecting arm 1211 is hinged to the welding torch 110, and the first connecting arm 1211 and the welding torch 110 can be relatively fixed. In this way, the angle between the frame 120 and the welding torch 110 can be adjusted arbitrarily, which makes this embodiment more flexible to be applied to different working conditions.

[0056] In some embodiments, the welding torch 110 includes a light-emitting part 111 and a hand-held part 112, with a first connecting arm 1211 connected to the side of the light-emitting part 111 away from the hand-held part 112.

[0057] like Figure 2 The handheld part 112 is provided with a switch button. By connecting the first connecting arm 1211 and the light-emitting part 111 to the side away from the handheld part 112, sufficient space is reserved between the support member 121 and the switch button for easy gripping, while also preventing the first connecting arm 1211 from accidentally touching the switch button.

[0058] In some embodiments, the first connecting arm 1211 extends in a direction away from the light-emitting part 111, so that there is enough space between the support member 121 and the switch button for easy gripping, while also preventing the first connecting arm 1211 from accidentally touching the switch button.

[0059] The first connecting arm 1211 is spaced apart from the laser beam 113 generated by the light-emitting part 111, and the second connecting arm 1212 extends in a direction away from the laser beam 113, so as to avoid the support member 121 from blocking the laser beam 113.

[0060] In one embodiment, exemplarily, such as Figure 3 , Figure 4 As shown, the frame 120 is also provided with a first clamping structure 12123 and a second clamping structure 12124. The wire feeder 130 is installed in the first clamping structure 12123, and the air blowing component 140 is disposed in the second clamping structure 12124. The clamping positions are preset on the frame 120 so that the air blowing component 140 and the wire feeder 130 can be detachably connected to the frame 120, reducing the installation and usage difficulty of this embodiment.

[0061] This application also provides a welding system including the handheld welding device 100 of any of the above embodiments. Therefore, it possesses all the beneficial effects of the handheld welding device 100 of any of the above embodiments, which will not be elaborated further here.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A handheld welding device, characterized in that, include: Welding torch (110); A frame (120) is mounted on the welding torch (110) to assist the welding torch (110) in welding operations at the external corner of the workpiece. The frame (120) includes a support (121) and a rolling element (122). The frame (120) is disposed on the welding torch (110) and is disposed near the torch rod (115) of the welding torch (110). The rolling element (122) is disposed on the frame (120) at one end away from the welding torch (110). The rolling surface (1221) of the rolling element (122) has an annular recess (1222) that can be fitted into the workpiece to prevent the welding torch (110) from shifting relative to the workpiece during the welding process.

2. The handheld welding device according to claim 1, characterized in that, The rolling element (122) is configured as a bearing, and the recess (1222) is located at the center of the rolling surface (1221) of the bearing. The cross-section of the recess (1222) is V-shaped to facilitate the positioning of the bearing and the workpiece.

3. The handheld welding device according to claim 2, characterized in that, The recessed portion (1222) has a first inclined surface (12221) and a second inclined surface (12222) that are arranged at relatively intervals. In the radial direction away from the centerline of the recess (1222), the distance between the first inclined surface (12221) and the second inclined surface (12222) gradually increases; and / or, an angle α is formed between the plane containing the first inclined surface (12221) and the plane containing the second inclined surface (12222), satisfying 30≤α≤120°.

4. The handheld welding device according to claim 1, characterized in that, The welding torch (110) includes a light-emitting part (111), a torch rod (115) is provided on the light-emitting part (111), and a welding copper nozzle (1151) is provided on the torch rod (115) at a position away from the light-emitting part (111). The frame (120) is provided with a wire feeder (130), which passes through the frame (120) and the end of the wire feeder (130) is located near the welding copper nozzle (1151).

5. The handheld welding device according to claim 1, characterized in that, The welding torch (110) includes a light-emitting part (111), and the light-emitting part (111) has a light-emitting port in the direction facing the frame (120); The frame (120) is provided with a wire feeder (130) and an air blowing device (140). The wire feeder (130) passes through the frame (120), and the end of the wire feeder (130) is located near the focal point of the laser beam (113) emitted from the light outlet. The air blowing component (140) passes through the frame (120), and the end of the air blowing component (140) is located near the focal point of the laser beam (113) to blow air onto the welding position and blow away the spatter at the welding position.

6. The handheld welding device according to claim 5, characterized in that, The welding torch (110) is also provided with a gas path structure, which includes a gas hole (114). The gas hole (114) is located on the welding torch (110) near the light outlet. The gas hole (114) can blow air to the outside of the welding torch (110) along the welding path of the laser beam (113) to prevent the spatter from contacting the protective mirror (1111) at the light outlet.

7. The handheld welding device according to claim 5, characterized in that, The support member (121) includes a first connecting arm (1211) and a second connecting arm (1212). The first connecting arm (1211) is disposed on the welding torch (110) and extends away from the welding torch (110). The second connecting arm (1212) is mounted on the end of the first connecting arm (1211) away from the welding torch (110).

8. The handheld welding device according to claim 7, characterized in that, The wire feeder (130) and the air blowing member (140) are both mounted on the second connecting arm (1212). An included angle β is formed between the first connecting arm (1211) and the second connecting arm (1212), and the included angle β satisfies 60≤β≤180°.

9. The handheld welding device according to claim 7, characterized in that, The first connecting arm (1211) is hinged to the welding torch (110), and the first connecting arm (1211) and the welding torch (110) can be fixed relative to each other.

10. A welding system, characterized in that, Includes the handheld welding device (100) according to any one of claims 1 to 9.

Images