A manganese-copper shunt device resistance welding apparatus and method

Abstract

A manganese copper shunt device resistance welding device and welding method, including spot welding machine, workbench and welding fixture, the workbench is corresponded electrode head place and is equipped with blanking groove, the bottom of workbench is fixed with the hopper corresponding blanking groove, the bottom of hopper is placed with material frame, the first device and the second device on electrode head are welded into shape and fall into material frame through blanking groove and hopper.The independent welding fixture is set in the application, and the operator holds the fixture instead of the workpiece during assembly and welding, avoiding the risk of welding spatter and electrode burn. Moreover, the positioning groove on the fixture allows the two devices to be fitted in a precise vertical posture, avoiding the welding offset problem caused by manual mismatching. The workbench is equipped with a blanking groove, which cooperates with the hopper and material frame. After welding, the finished product automatically falls and is collected by gravity, eliminating the risk of burns when taking the workpiece and improving work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of welding technology for manganese-copper shunts, specifically referring to a resistance welding device and welding method for manganese-copper shunt devices. Background Technology

[0002] A manganese-copper shunt is a precision resistive element commonly used in devices such as electricity meters to sample current. Its core is a strip made of manganese-copper alloy, which needs to be reliably connected to copper terminals. During spot welding, a large current flows briefly across the workpiece contact surface, generating resistance heat that locally melts the metal, forming a weld nugget under pressure. In operation, the strip manganese-copper component and terminals are stacked between upper and lower electrodes. Pressing the foot switch compresses the electrodes and discharges instantaneously, concentrating heat in the welding area to achieve a strong solid-state connection. Due to the extremely short heating time and small heat-affected zone, the resistance stability of the manganese-copper is guaranteed.

[0003] Currently, most welding of strip-shaped manganese copper parts is still done by hand. The operator holds the manganese copper strip and the terminal with their hand, aligns it with the spot welding electrode, and then starts welding. Since the instantaneous current of spot welding can reach thousands of amperes, the contact surface generates high temperatures. When operating by hand, the fingers are close to the welding area and lack effective protection. In addition, continuous welding for a long time will cause the electrode head to heat up, and the operator may be burned if they accidentally touch it. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of the present invention is to provide a resistance welding apparatus and welding method for manganese copper shunt devices, so as to at least partially solve the problems mentioned in the background art.

[0005] The technical solution adopted in this invention is as follows: A resistance welding device for manganese-copper shunt devices is proposed, comprising: A pair of electrode heads, arranged opposite to each other, are mounted on a spot welding machine via a welding arm; A workbench is located on the front side of the spot welding machine; Welding fixture, used to install and fix the first and second components; The workbench is provided with a material drop chute corresponding to the electrode head. The workbench is provided with material trays for holding the first device and the second device respectively. The first device and the second device are mounted on the welding fixture in a set posture and placed between the electrode heads for welding. The bottom of the workbench is fixed with a hopper corresponding to the material drop chute. A material frame is placed at the bottom of the hopper. After the first device and the second device on the electrode head are welded, they fall into the material frame through the material drop chute and the hopper.

[0006] Furthermore, the welding fixture includes a base plate, a positioning plate, and positioning pins. Both the base plate and the positioning plate are constructed as rectangular plates, and one side of the positioning plate is provided with a positioning groove that conforms to the side of the first device. The front end of the positioning plate protrudes from the base plate and is fixed to the upper side of the base plate by the positioning pins.

[0007] Furthermore, the positioning plate includes a second positioning part and a first positioning part. The second positioning part is fixed to the upper side of the base plate, and the front end of the second positioning part protrudes from the base plate. The first positioning part is fixed to the front end of the second positioning part. The notch formed between the second positioning part and the first positioning part facing the base plate is configured as the positioning groove.

[0008] Furthermore, the side wall of the second positioning part facing the positioning groove includes a second limiting surface and a third limiting surface. The second limiting surface abuts against the side wall of the first device, and the third limiting surface abuts against the protrusion on the side of the first device. The second limiting surface and the third limiting surface together restrict the lateral position of the first device.

[0009] Furthermore, the side wall of the first positioning part facing the positioning groove includes a first limiting surface. The first limiting surface abuts against the front end face of the first device and is used to limit the longitudinal position of the first device. The longitudinal direction is perpendicular to the transverse direction. The first limiting surface abuts against the head end of the second device, so that the first device and the second device fit together in a mutually perpendicular posture.

[0010] Furthermore, the height of the positioning groove is greater than the height of the first device, and the upper side wall of the base plate is attached to the bottom of the first device to limit the height position of the first device. The height direction is perpendicular to the longitudinal direction and the transverse direction.

[0011] Furthermore, a copper sheet is pre-attached to the head end of the second device, and the copper sheet is positioned at the connection point between the first and second devices during soldering.

[0012] Furthermore, the base plate comprises bakelite board, and the positioning plate comprises bakelite board or stainless steel plate.

[0013] A second aspect of the present invention provides a welding method for a manganese-copper shunt device, using the aforementioned resistance welding apparatus for a manganese-copper shunt device, comprising the following steps: Assembly steps: Hold the welding fixture, then push the first component from the material tray into the positioning groove in the horizontal direction for positioning, then take the second component from the material tray and align the head end of the second component with the end end of the first component so that the first component and the second component are perpendicular to each other. The welding process involves holding the welding fixture and placing the welding point of the assembled first and second components between the two electrode heads. The foot switch is then controlled to bring the two electrode heads closer together to clamp the first and second components and perform welding simultaneously. After the blanking and welding steps are completed, the distance between the two electrode heads increases, and the formed first and second devices fall directly from the blanking groove into the material frame through the feeding hopper.

[0014] Furthermore, in the assembly step, the copper sheet is pre-soaked in water and then adhered to the head end of the second device.

[0015] Beneficial effects: This invention utilizes an independent welding fixture, allowing the operator to hold the fixture rather than the workpiece during assembly and welding. This maintains a safe distance between the operator's fingers and the welding electrode and high-temperature welding area, avoiding the risks of welding spatter and electrode burns. Furthermore, the positioning groove on the fixture, its contour-following design of the first component, and the positioning function of the first limiting surface for the second component ensure precise vertical alignment of the two components, preventing welding misalignment caused by manual misalignment and reducing product defect rates. A material drop chute, along with a hopper and material frame, allows the finished product to automatically fall and be collected by gravity after welding, eliminating the need for the operator to touch the high-temperature workpiece and reducing the risk of burns during handling, while also improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a resistance welding device for a manganese-copper shunt device proposed in an embodiment of the present invention; Figure 2 for Figure 1 A front view structural diagram; Figure 3 A three-dimensional structural schematic diagram of the welding fixture and the manganese-copper shunt device is provided for an embodiment of the present invention; Figure 4 for Figure 3 A top-view structural diagram; Figure 5 This is a three-dimensional structural diagram of a welding fixture proposed in an embodiment of the present invention; Figure 6 This is a schematic diagram of the manganese-copper shunt device proposed in an embodiment of the present invention.

[0017] Among them, 01, first device; 02, second device; 03, copper sheet; 10, spot welding machine; 11, electrode head; 12, welding arm; 13, foot switch; 20, workbench; 200, material chute; 21, material tray; 22, material hopper; 23, material frame; 30, welding fixture; 31, base plate; 32, positioning plate; 320, positioning groove; 321, second positioning part; 3210, second limiting surface; 3211, third limiting surface; 322, first positioning part; 3220, first limiting surface; 33, positioning pin.

[0018] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0020] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments 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. Therefore, they should not be construed as limitations on the embodiments.

[0021] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a resistance welding apparatus for a manganese copper shunt device, including a spot welding machine 10, a worktable 20 and a welding fixture 30.

[0022] A pair of electrode heads 11 are mounted on the spot welding machine 10 via welding arms 12. The two electrode heads 11 are arranged vertically opposite each other, one of which is a fixed electrode and the other is a movable electrode. The movable electrode is driven by a cylinder or electromagnetic mechanism inside the spot welding machine 10, which can realize the opening and closing movement in the vertical direction.

[0023] Furthermore, the workbench 20 is positioned at the front of the spot welding machine 10, with a certain height difference between the upper surface of the workbench 20 and the lower end of the electrode head 11, facilitating the operator's placement and removal of materials. The welding fixture 30 is an auxiliary tool independent of the spot welding machine 10, used to install and fix the first component 01 (manganese copper strip) and the second component 02 (copper terminal). The spot welding machine 10 is also equipped with a foot switch 13. When the operator presses the foot switch 13, the two electrode heads 11 move closer together and apply a preset welding pressure, while simultaneously conducting welding current; after releasing the foot switch 13, the electrode heads 11 automatically separate.

[0024] Thus, during the welding process, the operator holds the welding fixture 30 and sends one end of the pre-installed workpiece to the welding area between the two electrode heads 11. After the two electrode heads 11 contact the workpiece and clamp and fix it, and spot welding begins, the welding fixture 30 is removed. The operator's hand is always kept at the rear end of the welding fixture 30, away from the electrode heads 11 and the high-temperature welding area, thereby fundamentally avoiding the risk of hand burns mentioned in the background art.

[0025] Furthermore, a material drop chute 200 is provided on the worktable 20 corresponding to the electrode head 11. The material drop chute 200 is a rectangular opening that runs vertically through the workpiece, and its horizontal projection is located in the area directly below the two electrode heads 11. The opening size of the material drop chute 200 is larger than the outer dimensions of the welded workpiece to ensure that the finished product can fall without obstruction. Material trays 21 for holding the first device 01 and the second device 02 are placed on the worktable 20. The two material trays 21 are placed separately on the left and right sides of the material drop chute 200 for easy access by the operator. The first device 01 and the second device 02 are installed on the welding fixture 30 in a set posture. Then, the operator holds the welding fixture 30 and places the assembled workpiece between the electrode heads 11 for welding.

[0026] Furthermore, a hopper 22 is fixed at the bottom of the workbench 20 corresponding to the material chute 200. The hopper 22 is funnel-shaped, wider at the top and narrower at the bottom, and is welded from stainless steel plates with smooth inner walls. A material frame 23 is placed at the bottom of the hopper 22. The material frame 23 is a plastic frame with an opening at the top.

[0027] After welding, the two electrode heads 11 move away from each other, and the formed workpiece detaches directly from the electrode heads 11 and falls downwards, passing through the drop chute 200. After being guided and buffered by the hopper 22, it finally falls into the material frame 23. The entire dropping process is completed entirely by the workpiece's own weight, without manual intervention. Operators do not need to pick up the still hot welded finished products by hand, reducing the risk of burns and saving the time of picking up and placing each part individually.

[0028] like Figure 3 and Figure 4As shown, the welding fixture 30 includes a base plate 31, a positioning plate 32, and positioning pins 33. Both the base plate 31 and the positioning plate 32 are rectangular plates. The base plate 31 is longer and wider than the positioning plate 32 for easier gripping by the operator. One side of the positioning plate 32 has a positioning groove 320 that conforms to the side of the first device 01. The shape of the positioning groove 320 matches the outer contour of the first device 01, ensuring that the first device 01 can only be pushed into it in a specific posture. The front end of the positioning plate 32 protrudes from the front edge of the base plate 31. This design ensures that after assembling the first device 01 and the second device 02, the welding point is fully exposed in front of the base plate 31, facilitating insertion between the two electrode heads 11.

[0029] Furthermore, the positioning plate 32 is fixed to the upper side of the base plate 31 by positioning pins 33. The positioning pins 33 are countersunk screws that pass through the bottom surface of the base plate 31 and are screwed into the threaded hole of the positioning plate 32, so that the lower surface of the base plate 31 remains flat.

[0030] In some embodiments, the detachable structure of the positioning pin 33 allows for the replacement of positioning plates 32 with different positioning groove 320 shapes according to different models of the first device 01, thereby improving the versatility of the fixture.

[0031] like Figure 5 As shown, the positioning plate 32 includes a second positioning part 321 and a first positioning part 322. The second positioning part 321 is an elongated block extending along the length of the base plate 31, and its bottom surface is fixed to the upper side of the base plate 31 by positioning pins 33. The front end of the second positioning part 321 protrudes from the front edge of the base plate 31. The first positioning part 322 is a short block perpendicular to the second positioning part 321, integrally formed and fixed to the upper side of the front end of the second positioning part 321. An L-shaped notch is formed between the second positioning part 321 and the first positioning part 322 facing the base plate 31, and this notch is the positioning groove 320. The opening of the positioning groove 320 faces the side and rear, so that the first device 01 can be pushed in horizontally from the side, or it can be inserted from above and then pressed against the side, providing flexible operation.

[0032] Furthermore, the side wall of the second positioning part 321 facing the positioning groove 320 includes a second limiting surface 3210 and a third limiting surface 3211. The second limiting surface 3210 is a vertical plane perpendicular to the upper surface of the base plate 31 and abuts against the main body side wall of the first device 01. The third limiting surface 3211 is a stepped surface that is recessed inward relative to the second limiting surface 3210, and its shape matches the protrusion on the side of the first device 01.

[0033] During assembly, the sidewall of the first device 01 contacts both the second limiting surface 3210 and the third limiting surface 3211. These two limiting surfaces work together to restrict the lateral displacement of the first device 01 and prevent the first device 01 from sliding to the side during the welding process.

[0034] Furthermore, the side wall of the first positioning part 322 facing the positioning groove 320 includes a first limiting surface 3220, which is a vertical plane perpendicular to the upper surface of the base plate 31 and perpendicular to the second limiting surface 3210. The first limiting surface 3220 abuts against the front end face of the first device 01 to limit the longitudinal position of the first device 01.

[0035] Simultaneously, when placing the second device 02, the operator also abuts the head end of the second device 02 against the first limiting surface 3220, making the head end of the second device 02 flush with the front end face of the first device 01. Since the first limiting surface 3220 provides a unified longitudinal reference for both the first device 01 and the second device 02, the first device 01 and the second device 02 can be precisely fitted in a mutually perpendicular posture, ensuring the stability and perpendicularity of the welding overlap.

[0036] In some embodiments, the height of the positioning groove 320 is greater than the thickness of the first device 01, that is, the thickness of the second positioning part 321 and the first positioning part 322 in the vertical direction. The upper side wall of the base plate 31 is a smooth plane. When the first device 01 is placed in the positioning groove 320, its bottom naturally rests on the upper surface of the base plate 31. The upper surface of the base plate 31 supports and restricts the position of the first device 01 in the height direction (i.e., the vertical direction). The height direction is perpendicular to both the longitudinal and transverse directions, thereby achieving complete positioning of the first device 01 in three-dimensional space.

[0037] like Figure 6 As shown, a copper sheet 03 is pre-attached to the head of the second device 02. During soldering, the copper sheet 03 is located at the connection point between the first device 01 and the second device 02.

[0038] Specifically, during assembly, the operator first takes an extremely thin sheet of pure copper 03, dips it in a small amount of water, and uses the surface tension of the water to temporarily adhere it to the head surface of the second device 02. Then, the second device 02, along with the copper sheet 03, is aligned with the first device 01. During welding, the copper sheet 03, located between the interface of the first device 01 and the second device 02, fills tiny gaps, improves the uniformity of current distribution, and reduces contact resistance, thereby improving the quality of the weld nugget formation and making the weld stronger and more reliable. Simultaneously, the copper sheet 03, after melting at high temperature, replenishes the metal material at the interface, helping to prevent incomplete welds caused by oxidation or poor contact.

[0039] In some embodiments, the base plate 31 comprises bakelite. Bakelite has excellent insulation properties and sufficient mechanical strength to withstand the impact and high temperature from repeated welding operations. Using bakelite as the material of the base plate 31 ensures that the welding current does not form a shunt circuit through the welding fixture 30 itself, thereby ensuring that all welding current flows concentratedly through the contact surface of the first device 01 and the second device 02, avoiding insufficient welding energy or weld nugget displacement caused by current shunting.

[0040] The positioning plate 32 can be made of bakelite or stainless steel. When bakelite is used, the entire welding fixture 30 is an insulator, which provides the highest level of safety. When stainless steel is used, the positioning plate 32 is more wear-resistant and less prone to deformation, making it suitable for mass production and long-term continuous production. Since the positioning plate 32 and the electrode head 11 do not form a closed circuit, no harmful shunting will occur.

[0041] A second aspect of the present invention provides a welding method for a manganese-copper shunt device, using the aforementioned resistance welding apparatus for a manganese-copper shunt device, comprising the following steps: Assembly steps: The operator holds the rear of the base plate 31 of the welding fixture 30 with one hand, so that the positioning groove 320 faces the operator. Then, the operator takes the first component 01 from the material tray 21 with the other hand and pushes the first component 01 into the positioning groove 320 in a horizontal direction (from the side or rear) until the front end of the first component 01 abuts against the first limiting surface 3220, the side is in contact with the second limiting surface 3210 and the third limiting surface 3211, and the bottom is in contact with the upper surface of the base plate 31.

[0042] After positioning the first component 01, the second component 02 is taken from the material tray 21 and aligned with the end of the first component 01, while simultaneously abutting the head of the second component 02 against the first limiting surface 3220. At this point, the first component 01 and the second component 02 naturally form a mutually perpendicular L-shaped overlapping posture. Throughout the assembly process, the operator's fingers only contact the non-welding areas of the first component 01 and the second component 02, and the hand holding the fixture is always kept away from the front welding point.

[0043] The welding process involves the operator holding the welding fixture 30 and horizontally inserting the pre-aligned welding points of the first device 01 and the second device 02 into the gap between the two electrode heads 11, ensuring the welding area is directly aligned with the center of the upper and lower electrode heads 11. After confirming the position is correct, the operator presses the foot switch 13, causing the spot welding machine 10 to drive the movable electrode head downwards. The two electrode heads 11 approach each other and clamp the first device 01 and the second device 02 with a preset pressure. Simultaneously, a large current is instantaneously applied, completing the resistance welding within milliseconds. The operator's hands are positioned behind and to the side of the electrode heads 11, completely avoiding the direction of welding spatter.

[0044] After the material unloading and welding are completed, the operator releases the foot switch 13, and the distance between the two electrode heads 11 automatically increases, returning to the initial open state. There are no clips or magnetic connections between the welded workpiece and the welding fixture 30; it falls freely only by gravity. The formed workpiece falls directly from the positioning slot 320 of the welding fixture 30, passes through the unloading chute 200 on the worktable 20, falls into the hopper 22, slides down the inclined surface of the hopper 22, and finally collects in the material frame 23 at the bottom. The operator does not need to touch the high-temperature welded product with their hands and can directly proceed to the assembly and welding of the next workpiece, achieving safe and efficient continuous operation.

[0045] In the assembly process, copper sheet 03 is pre-soaked in water and then adhered to the head end of the second component 02. Specifically, the operator uses tweezers or their fingers to pick up a piece of copper sheet 03, wets it in a container of clean water, and then directly attaches it to the end face of the second component 02 to be welded. The surface tension of the water is sufficient to temporarily fix the copper sheet 03 in place, preventing it from falling off during subsequent assembly. During welding, the water evaporates instantly, and the copper sheet 03 is enveloped and melted by the weld nugget, thus aiding in the welding process. This method is simple and easy to implement, requiring no additional adhesive or tooling.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A resistance welding apparatus for a manganese-copper shunt device, characterized in that, include: A pair of electrode heads (11) are arranged opposite each other and mounted on a spot welding machine (10) via welding arms (12); A workbench (20) is located on the front side of the spot welding machine (10); Welding fixture (30) is used to install and fix the first device (01) and the second device (02); The workbench (20) is provided with a material drop groove (200) corresponding to the electrode head (11). The first device (01) and the second device (02) are installed on the welding fixture (30) in a set posture and placed between the electrode heads (11) for welding. The welding fixture (30) includes a base plate (31), a positioning plate (32), and a positioning pin (33). Both the base plate (31) and the positioning plate (32) are constructed as rectangular plates. One side of the positioning plate (32) is provided with a positioning groove (320) that conforms to the side of the first device (01). The front end of the positioning plate (32) protrudes from the base plate (31) and is fixed to the upper side of the base plate (31) by the positioning pin (33).

2. The resistance welding apparatus for manganese-copper shunt devices according to claim 1, characterized in that: The positioning plate (32) includes a second positioning part (321) and a first positioning part (322). The second positioning part (321) is fixed to the upper side of the base plate (31), and the front end of the second positioning part (321) protrudes from the base plate (31). The first positioning part (322) is fixed to the front end of the second positioning part (321). The notch formed between the second positioning part (321) and the first positioning part (322) facing the base plate (31) is set as the positioning groove (320).

3. The resistance welding apparatus for manganese-copper shunt devices according to claim 2, characterized in that: The second positioning part (321) has a side wall facing the positioning groove (320) including a second limiting surface (3210) and a third limiting surface (3211). The second limiting surface (3210) is in contact with the side wall of the first device (01), and the third limiting surface (3211) is in contact with the protrusion on the side of the first device (01). The second limiting surface (3210) and the third limiting surface (3211) together restrict the lateral position of the first device (01).

4. The resistance welding apparatus for manganese-copper shunt devices according to claim 3, characterized in that: The first positioning part (322) has a first limiting surface (3220) on one side wall facing the positioning groove (320). The first limiting surface (3220) abuts against the front end face of the first device (01) and is used to limit the longitudinal position of the first device (01), wherein the longitudinal direction is perpendicular to the transverse direction, and the first limiting surface (3220) abuts against the head end of the second device (02), so that the first device (01) and the second device (02) fit together in a mutually perpendicular posture.

5. The resistance welding apparatus for manganese-copper shunt devices according to claim 4, characterized in that: The height of the positioning groove (320) is greater than the height of the first device (01), and the upper side wall of the base plate (31) is attached to the bottom of the first device (01) to limit the height position of the first device (01), wherein the height direction is perpendicular to the longitudinal direction and the transverse direction.

6. The resistance welding apparatus for manganese-copper shunt devices according to claim 1, characterized in that: The workbench (20) has a material tray (21) for holding the first device (01) and the second device (02) respectively. The bottom of the workbench (20) is fixed with a hopper (22) corresponding to the material drop chute (200). The bottom of the hopper (22) has a material frame (23). After the first device (01) and the second device (02) on the electrode head (11) are welded and formed, they fall into the material frame (23) through the material drop chute (200) and the hopper (22).

7. The resistance welding apparatus for manganese-copper shunt devices according to claim 3, characterized in that: The head end of the second device (02) is pre-attached with a copper sheet (03), which is located at the connection between the first device (01) and the second device (02) during soldering.

8. The resistance welding apparatus for manganese-copper shunt devices according to claim 1, characterized in that: The base plate (31) includes a bakelite board, and the positioning plate (32) includes a bakelite board or a stainless steel plate.

9. A welding method for a manganese-copper shunt device, characterized in that: The resistance welding apparatus for manganese-copper shunt devices according to claims 1-9 includes the following steps: Assembly steps: Hold the welding jig (30), then push the first device (01) from the material tray (21) into the positioning groove (320) in the horizontal direction for positioning, then take the second device (02) from the material tray (21) and align the head end of the second device (02) with the end end of the first device (01) so that the first device (01) and the second device (02) are perpendicular to each other; Welding steps: Hold the welding fixture (30) and place the welding point of the first device (01) and the second device (02) between the two electrode heads (11). Control the foot switch (13) to bring the two electrode heads (11) closer to each other and clamp the first device (01) and the second device (02) to weld simultaneously. After the blanking and welding steps are completed, the distance between the two electrode heads (11) increases, and the formed first device (01) and second device (02) fall directly from the blanking groove (200) through the feeding hopper (22) into the material frame (23).

10. The welding method for the manganese-copper shunt device according to claim 9, characterized in that: In the assembly step, the copper sheet (03) is pre-soaked in water and then adhered to the head end of the second device (02).

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