Spot welding device and spot welding equipment
By designing a separate spot welding device and guide rail system, the problem of large space occupancy of contact welding is solved, flexible movement and efficient welding of soldering iron heads are achieved, and the degree of welding automation and equipment stability are improved.
Patent Information
- Application Number
- CN202422223729.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-10
AI Technical Summary
Contact welding technology occupies a large operating space during the welding process, affecting the movement flexibility of the soldering iron head, making it difficult to replace contactless welding.
A spot welding device is designed, including a machine, an automatic tin supply device and a mobile device. The soldering iron head is connected to the mobile device. The flexible movement of the soldering iron head is achieved through the guide rail system, the soldering iron head is separated from the automatic tin supply device, avoiding circumcision and avoiding, and combining the gantry and the guide rail structure to achieve accurate three-dimensional space movement.
It improves the movement flexibility of the soldering iron head, reduces the operating space requirement, improves welding efficiency and automation, and ensures welding quality.
Smart Images
Figure CN223129544U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automatic welding, and particularly relates to a spot welding device and a spot welding equipment. Background Art
[0002] In the current market, welding technologies are mainly divided into two categories: non-contact welding and contact welding. Non-contact welding technologies, such as laser welding, solder ball spraying welding, solder ring spraying welding, etc., are favored for their characteristics of small required welding space and high welding efficiency. However, non-contact welding also has certain limitations, such as insufficient welding stability, relatively low yield rate, relatively strict requirements for welding raw materials, and high costs.
[0003] In contrast, contact welding, including ordinary constant-temperature spot welding, pulse welding, etc., occupies a place in the market with its advantages of excellent solder joint quality, high stability of solder joints after welding, and low costs. But contact welding also faces some challenges. For example, it is necessary to frequently wet the soldering iron tip with solder to prevent oxidation. Currently, in the industry, the soldering iron tip is often bound to an automatic tin feeding device to wet the soldering iron tip. The soldering iron tip forms a certain angle with the automatic tin feeding device, and the tin feeding device moves synchronously with the soldering iron tip. When welding the workpiece to be welded, in order to prevent the tin feeding device from rubbing or colliding with the workpiece to be welded, it is necessary to often detour to avoid it, which occupies a relatively large operating space and is not conducive to the flexible movement of the soldering iron tip between the solder joints on the workpiece to be welded, causing certain obstacles to the application of contact welding.
[0004] In view of this problem, improving the contact welding technology so that it can overcome the defect of large occupied operating space and to a certain extent replace non-contact welding has become an urgent problem to be solved in this field. Content of the Utility Model
[0005] The main purpose of the utility model is to propose a spot welding device and a spot welding equipment, aiming to improve the moving flexibility of the soldering iron tip.
[0006] To achieve the above purpose, the spot welding device proposed by the utility model includes a machine table, an automatic tin feeding device, a moving device, and a soldering iron tip. The automatic tin feeding device is slidably arranged on the machine table, the moving device is movably arranged on the machine table, the soldering iron tip is connected to the output end of the moving device, the moving device drives the soldering iron tip to approach or move away from the automatic tin feeding device, and the automatic tin feeding device is used to infiltrate the soldering iron tip.
[0007] The present utility model also provides a spot welding device, which includes a spot welding apparatus as described in any one of the above, a gantry, and a welding workbench. A first guide rail is provided on the gantry, the machine table is disposed within the gantry, a second guide rail is provided on the machine table, the second guide rail is arranged along the length direction of the machine table, the welding workbench is slidably connected to the second guide rail, the first guide rail is arranged along the width direction of the machine table, and the moving device is slidably connected to the first guide rail. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.
[0009] Figure 1 FIG. is a schematic structural diagram of an embodiment of the spot welding device provided by the present utility model;
[0010] Figure 2 For Figure 1 FIG. is a schematic structural diagram of an embodiment of the automatic solder feeding device in
[0011] Figure 3 For Figure 1 FIG. is a schematic structural diagram of another embodiment of the automatic solder feeding device in
[0012] Figure 4 For Figure 1 FIG. is a schematic structural diagram of still another embodiment of the automatic solder feeding device in
[0013] Figure 5 FIG. is a schematic structural diagram of an embodiment of the spot welding apparatus provided by the present utility model;
[0014] Figure 6 FIG. is a schematic structural diagram of another embodiment of the spot welding apparatus provided by the present utility model.
[0015] Explanation of the reference numerals in the drawings:
[0016] 100, spot welding apparatus;
[0017] 1, automatic solder feeding device; 11, desoldering box; 11a, solder slag collection cavity; 11b, soldering iron through hole; 11c, air blowing hole; 12, solder outlet tube; 12a, solder outlet channel; 13, solder supply tube; 13a, solder supply channel; 14, air blowing device; 14a, air blowing channel;
[0018] 141. First mounting bracket; 1411. First fixing rod; 1412. First connecting rod; 1413. Second connecting rod; 1414. Second fixing rod; 1415. First tensioning member; 1416. Second tensioning member; 1417. Third tensioning member;
[0019] 142. Jet pipe; 142a. Jet channel; 143. Gas supply pipe; 143a. Gas supply channel;
[0020] 15. Second mounting bracket; 151. Third fixing rod; 152. Third connecting rod; 153. Fourth connecting rod; 154. Fourth fixing rod; 155. Fourth tensioning member; 156. Fifth tensioning member; 157. Sixth tensioning member;
[0021] 2. Moving device; 3. Soldering iron tip; 4. Machine table;
[0022] 200. Spot welding equipment;
[0023] 210. Gantry; 211. First guide rail;
[0024] 220. Second guide rail; 221. Welding workbench.
[0025] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners
[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0027] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0028] In addition, if the embodiments of the present utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0029] The present utility model provides a spot welding device 100.
[0030] Please refer to Figure 1 , in an embodiment of the present utility model, the spot welding device 100 provided by the present utility model includes a machine table 4, an automatic solder feeding device 1, a moving device 2, and a soldering iron head 3. The automatic solder feeding device 1 is fixedly arranged on the machine table 4, the moving device 2 is movably arranged on the machine table 4, the soldering iron head 3 is connected to the output end of the moving device 2. The wire, solder breaking machine, solder pump, etc. The conveying pipe is used to connect the solder pump. The solder breaking machine uses a knife-shaped gear to press small holes in the solder wire, releasing the stress of the solder wire itself, improving the welding environment, enabling the flux to vaporize when the soldering iron is heated, overflowing from the holes, enhancing the solderability and fluidity of the solder, and preventing the occurrence of the "solder explosion" phenomenon. Subsequently, the solder pump conveys the solder wire to the vicinity of the soldering iron head 3 through the conveying pipe. The moving device 2 drives the soldering iron head 3 to approach the automatic solder feeding device 1, and the soldering iron head 3 heats and melts the solder wire to achieve the wetting of the soldering iron head 3, prevent the oxidation of the soldering iron head 3, and carry a part of the solder for welding the workpiece to be welded.
[0031] The moving device 2 of this embodiment is provided with pulleys and a driving device and can move along the corresponding guide rail. The output end of the moving device 2 is provided with a push rod. One end of the push rod is connected to the soldering iron head 3, and the other end is fixed on the bracket. The push rod can be driven in forms such as pneumatic or electric. By controlling the telescopic movement of the push rod, the soldering iron head 3 is moved closer to or farther away from the automatic solder feeding device 1.
[0032] Optionally, the mobile device 2 can be set as a combination of a linear guide and a slider, which can be installed on the machine table 4. The slider is driven by a motor and a transmission device (such as a lead screw, a pulley, etc.) to move on three mutually perpendicular guides, so as to realize the movement and positioning in the X, Y, and Z directions. The mobile device 2 can also be set as a robotic arm. The robotic arm is provided with at least three axes, and the three axes are used to realize spatial positioning. The mobile device 2 can also be set as a gantry 210 system: The gantry support system is composed of two parallel tracks, on which a cross beam can be installed, and a device that can move on it can be installed on the cross beam. This device can move along the X-axis of the track, the cross beam itself can move along the Y-axis, and the lifting mechanism can realize the movement of the Z-axis. It should be noted that the above embodiments are only examples of optional solutions and do not represent the limitation of the mobile device 2.
[0033] When tin replenishment and infiltration are required, the mobile device 2 drives the soldering iron head 3 to approach the automatic tin feeding device 1 for tin replenishment. After replenishment, the mobile device 2 drives the soldering iron head 3 to weld the solder joints of the workpiece to be welded, and so on in a cycle. This design of separating the soldering iron head 3 from the automatic tin feeding device 1 enables the soldering iron head 3 to directly move between the solder joints, without the need to detour to avoid scraping or colliding between the automatic tin discharging device and the workpiece to be welded, reducing the occupied operating space, improving the movement flexibility of the soldering iron head 3, and improving the soldering work efficiency.
[0034] Further, please refer to Figure 2 and Figure 6 In an embodiment of the present utility model, the automatic tin feeding device 1 includes a tin removing box 11, a tin discharging pipe 12, and a tin feeding pipe 13. The tin discharging pipe 12 is formed with a tin discharging channel 12a, the tin feeding pipe 13 is formed with a tin feeding channel 13a. The tin removing box 11 is fixedly arranged on the machine table 4, the tin discharging pipe 12 is arranged in the tin removing box 11, the tin discharging pipe 12 is connected to the tin feeding pipe 13, the tin discharging channel 12a is communicated with the tin feeding channel 13a, the mobile device 2 drives the soldering iron head 3 to approach or move away from the tin discharging pipe 12, and the tin removing box 11 is used to remove the residual tin slag on the soldering iron head 3. In this embodiment, the tin discharging pipe 12 is a hard pipe, and a hard pipe made of stainless steel or copper and other materials can be used to facilitate the guiding of the solder wire. The tin feeding pipe 13 is a smooth and wear-resistant flexible pipe, including flexible pipes made of materials such as polyimide (PI), polytetrafluoroethylene (PTFE), polyethylene (PE), and polypropylene (PP), which is convenient for adapting to complex installation environments. The tin removing box 11 is used to remove and collect the residual solder slag on the soldering iron head 3 after a soldering operation is completed and before tin replenishment, so as to facilitate regular cleaning.
[0035] Specifically, please refer to Figure 2 and Figure 6, in an embodiment of the present utility model, a solder slag collection cavity 11a is formed in the solder removal box 11. A soldering iron through hole 11b is formed in the top wall of the solder slag collection cavity 11a. The soldering iron through hole 11b is connected to a moving device 2 that drives the soldering iron head 3 to approach or move away from the automatic solder supply device 1, and the automatic solder supply device 1 is used to infiltrate the soldering iron head 3.
[0036] In this embodiment, the spot welding device 100 is used for a spot welding equipment 200. The automatic solder supply device 1 of the spot welding device 100 has a delivery pipe. The spot welding equipment 200 includes a solder passing through the solder slag collection cavity 11a and the external space. An air blowing hole 11c is formed in the side wall of the solder slag collection cavity 11a. The air blowing hole 11c communicates the solder slag collection cavity 11a with the external space. The solder removal box 11 is further provided with an air blowing device 14. The air blowing device 14 forms an air blowing channel 14a. The air blowing device 14 is connected to the outer wall of the solder removal box 11 and partially passes through the air blowing hole 11c and extends into the solder slag collection cavity 11a. The air blowing channel 14a communicates with the solder slag collection cavity 11a. In this embodiment, the air blowing device 14 can eject a high-speed air flow to blow off the residual solder slag on the soldering iron head 3, achieving the purpose of cleaning the soldering iron head 3 and facilitating secondary uniform solder replenishment.
[0037] Further, please refer to Figure 2 and Figure 6 , in an embodiment of the present utility model, the air blowing device 14 includes a first mounting bracket 141, a jet pipe 142, and a gas supply pipe 143. The jet pipe 142 forms a jet channel 142a. The gas supply pipe 143 forms a gas supply channel 143a. One end of the first mounting bracket 141 is connected to the outer wall of the solder removal box 11. The other end of the first mounting bracket 141 is connected to the outer wall of the jet pipe 142. The first mounting bracket 141 is used to adjust the position of the jet pipe 142 and fix it. One end of the jet pipe 142 passes through the air blowing hole 11c and extends into the solder slag collection cavity 11a. The jet channel 142a communicates with the solder slag collection cavity 11a. The end of the jet pipe 142 away from the air blowing hole 11c is connected to the gas supply pipe 143. The jet channel 142a communicates with the gas supply channel 143a to form the air blowing channel 14a. In this embodiment, the jet pipe 142 is a hard pipe, and a reduced-diameter air blowing nozzle can be provided at the air blowing port to eject a high-speed air flow. The gas supply pipe 143 is a flexible pipe to adapt to the complex installation environment between the jet pipe 142 and the air.
[0038] Specifically, please refer to Figure 2, in an embodiment of the present utility model, the first mounting bracket 141 includes a first fixing rod 1411, a first connecting rod 1412, a second connecting rod 1413, and a second fixing rod 1414. The first fixing rod 1411 is fixedly connected to the outer wall of the desoldering box 11. One end of the first connecting rod 1412 is hinged to the first fixing rod 1411. The second connecting rod 1413 rotatably passes through the other end of the first connecting rod 1412. One end of the second connecting rod 1413 away from the first connecting rod 1412 is hinged to the second fixing rod 1414. The second fixing rod 1414 is connected to the air jet pipe 142. That is, the first fixing rod 1411, the first connecting rod 1412, the second connecting rod 1413, and the second fixing rod 1414 are sequentially perpendicular and intersecting. Thus, the first mounting bracket 141 of this embodiment can adjust its posture in three-dimensional space to adjust the position and jet direction of the air jet pipe 142.
[0039] Please refer to Figure 2 and Figure 4 , in an embodiment of the present utility model, in order to lock the first mounting bracket 141, the first mounting bracket 141 further includes a first tensioning member 1415, a second tensioning member 1416, and a third tensioning member 1417. The first tensioning member 1415 connects the first fixing rod 1411 and the first connecting rod 1412. The second tensioning member 1416 connects the first connecting rod 1412 and the second connecting rod 1413. The third tensioning member 1417 connects the second connecting rod 1413 and the second fixing rod 1414. In this embodiment, the first tensioning member 1415, the second tensioning member 1416, and the third tensioning member 1417 can adopt screws, wedge plugs, or self-locking friction plates. The first two need to be manually tightened and loosened, while the self-locking friction plate relies on its own elastic expansion deformation and friction to achieve locking and positioning, and does not require manual tightening and loosening.
[0040] Please refer to Figure 3, in an embodiment of the present utility model, the automatic solder feeding device 1 further has a second mounting bracket 15, and the second mounting bracket 15 includes a third fixing rod 151, a third connecting rod 152, a fourth connecting rod 153 and a fourth fixing rod 154. The third fixing rod 151 is fixedly connected to the outer wall of the desoldering box 11. One end of the third connecting rod 152 penetrates through the third fixing rod 151. One end of the fourth connecting rod 153 is hinged to the third connecting rod 152. The fourth fixing rod 154 penetrates through the end of the fourth connecting rod 153 away from the third connecting rod 152, and the fourth fixing rod 154 is connected to the solder outlet tube 12. That is, the third fixing rod 151, the third connecting rod 152, the fourth connecting rod 153 and the fourth fixing rod 154 are vertically intersected in sequence. Thus, the second mounting bracket 15 of this embodiment can adjust its posture in three-dimensional space to adjust the position of the solder outlet tube 12 and the direction of the ejected solder wire.
[0041] Please refer to Figures 3 to 4 , in an embodiment of the present utility model, in order to lock the second mounting bracket 15, the second mounting bracket 15 further includes a fourth tightening member 155, a fifth tightening member 156 and a sixth tightening member 157. The fourth tightening member 155 connects the third fixing rod 151 and the third connecting rod 152. The fifth tightening member 156 connects the third connecting rod 152 and the fourth connecting rod 153. The sixth tightening member 157 connects the fourth connecting rod 153 and the fourth fixing rod 154. In this embodiment, the fourth tightening member 155, the fifth tightening member 156 and the sixth tightening member 157 can adopt screws, wedge plugs or self-locking friction plates. The first two need to be tightened and loosened manually, while the self-locking friction plate relies on its own elastic expansion deformation and friction to achieve locking and positioning without manual tightening and loosening.
[0042] Please refer to Figure 5 , in an embodiment of the present utility model, the solder outlet tube 12 forms an angle α with the axis of the soldering iron head 3, and 90° ≤ α < 180°. The soldering iron head 3 usually has a tip, and the tip has a conical surface or an inclined surface. When the solder wire is sent out, the top of the solder wire is a cylindrical section. Usually, the angle formed by the solder tube and the axis of the soldering iron head 3 is less than 90°, and the solder wire and the tip of the soldering iron head 3 will not be completely attached, resulting in poor heating and melting effect and efficiency. In this embodiment, the angle formed by the solder outlet tube 12 and the axis of the soldering iron head 3 is increased, improving the melting efficiency of the solder wire. The melted solder can quickly infiltrate the soldering iron head 3 to prevent the soldering iron head 3 from oxidizing. Therefore, the infiltration effect is better.
[0043] The present utility model also proposes a spot welding device 200. Please refer to Figure 1, in an embodiment of the present utility model, the spot welding device 200 includes the spot welding apparatus 100 described in any of the above embodiments, a gantry 210, and a welding workbench 221. A first guide rail 211 is provided on the gantry 210. The machine table 4 is disposed within the gantry 210. A second guide rail 220 is provided on the machine table 4. The second guide rail 220 is arranged along the length direction of the machine table 4. The welding workbench 221 is slidably connected to the second guide rail 220. The first guide rail 211 is arranged along the width direction of the machine table 4. The moving device 2 is slidably connected to the first guide rail 211.
[0044] Since this welding device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here. Among them, the gantry 210 has two legs arranged in the vertical direction and a crossbeam connecting the tops of the two legs. The first guide rail 211 is provided on the crossbeam. The machine table 4 is disposed between the two legs. The tabletop of the machine table 4 is rectangular. The crossbeam is arranged along the width direction of the machine table 4. A control panel is provided on the machine table 4 for the operator to control the movement of the moving device 2 and the welding workbench 221, and a control system is built in. The system includes a programmable logic controller (PLC) or an industrial computer for receiving control instructions and driving relevant actuators, such as servo motors or stepper motors, to achieve precise position control. During the specific operation process, the operator can set welding parameters, such as welding speed, welding time, the temperature of the soldering iron head 3, etc. The control system automatically adjusts the position of the spot welding apparatus 100 and the welding process according to these parameters to ensure the welding quality.
[0045] The spot welding device 200 of this embodiment realizes the precise movement of the spot welding apparatus 100 in three-dimensional space by combining the designs of the gantry 210, the machine table 4, the first guide rail 211, and the second guide rail 220, greatly improving the welding efficiency and flexibility. At the same time, due to the adoption of the technical solutions of the above embodiments, the spot welding device 200 of the present invention has at least the following beneficial effects: improving the degree of welding automation and reducing manual operation; realizing fast and accurate welding positioning by precisely controlling the moving device 2; the structural designs of the gantry 210 and the machine table 4 improve the stability of the device and are suitable for welding heavy workpieces; the integration of the control system makes the device operation more convenient and maintenance more convenient.
[0046] The above description is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.
Claims
1. A spot welding device, characterized in that, The spot welding device includes: A machine table; An automatic tin feeding device which is slidably arranged on the machine table; A moving device which is movably arranged on the machine table; and A soldering iron head which is connected to the output end of the moving device; The moving device drives the soldering iron head to approach or move away from the automatic tin feeding device, and the automatic tin feeding device is used to infiltrate the soldering iron head.
2. The spot welding device according to claim 1, characterized in that, The automatic tin feeding device includes a tin removing box, a tin outlet pipe and a tin supply pipe. The tin outlet pipe is formed with a tin outlet channel, and the tin supply pipe is formed with a tin supply channel; The tin removing box is fixedly arranged on the machine table, the tin outlet pipe is arranged in the tin removing box, the tin outlet pipe is connected to the tin supply pipe, and the tin outlet channel is communicated with the tin supply channel; The moving device drives the soldering iron head to approach or move away from the tin outlet pipe, and the tin removing box is used to remove the residual solder dross on the soldering iron head.
3. The spot welding device according to claim 2, characterized in that, A solder dross collection cavity is formed in the tin removing box. The top wall of the solder dross collection cavity is formed with a soldering iron through hole which communicates the solder dross collection cavity with the external space. The side wall of the solder dross collection cavity is formed with a blowing hole which communicates the solder dross collection cavity with the external space; The tin removing box is further provided with a blowing device which is formed with a blowing channel. The blowing device is connected to the outer wall of the tin removing box and partially extends into the solder dross collection cavity through the blowing hole, and the blowing channel is communicated with the solder dross collection cavity.
4. The spot welding device according to claim 3, characterized in that, The blowing device includes a first mounting bracket, a jet pipe and a gas supply pipe. The jet pipe is formed with a jet channel, and the gas supply pipe is formed with a gas supply channel; One end of the first mounting bracket is connected to the outer wall of the tin removing box, and the other end of the first mounting bracket is connected to the outer wall of the jet pipe. The first mounting bracket is used to adjust and fix the position of the jet pipe; One end of the jet pipe extends into the solder dross collection cavity through the blowing hole, and the jet channel is communicated with the solder dross collection cavity; The end of the jet pipe away from the blowing hole is connected to the gas supply pipe, and the jet channel is communicated with the gas supply channel to form the blowing channel.
5. The spot welding device according to claim 4, wherein The first mounting bracket includes a first fixing rod, a first connecting rod, a second connecting rod and a second fixing rod; The first fixing rod is fixedly connected to the outer wall of the tin removing box. One end of the first connecting rod is hinged to the first fixing rod. The second connecting rod is rotatably penetrated through the other end of the first connecting rod. The end of the second connecting rod away from the first connecting rod is hinged to the second fixing rod, and the second fixing rod is connected to the jet pipe.
6. The spot welding device according to claim 5, wherein, The first mounting bracket further includes a first tightening member, a second tightening member and a third tightening member. The first tightening member connects the first fixing rod and the first connecting rod, the second tightening member connects the first connecting rod and the second connecting rod, and the third tightening member connects the second connecting rod and the second fixing rod.
7. The spot welding device according to claim 2, characterized in that, The automatic tin feeding device further has a second mounting bracket which includes a third fixing rod, a third connecting rod, a fourth connecting rod and a fourth fixing rod; The third fixing rod is fixedly connected to the outer wall of the tin removal box. One end of the third connecting rod passes through the third fixing rod. One end of the fourth connecting rod is hinged to the third connecting rod. The fourth fixing rod passes through the end of the fourth connecting rod far from the third connecting rod, and the fourth fixing rod is connected to the tin outlet pipe.
8. The spot welding device according to claim 7, wherein The second mounting bracket further includes a fourth tensioning member, a fifth tensioning member, and a sixth tensioning member. The fourth tensioning member connects the third fixing rod and the third connecting rod. The fifth tensioning member connects the third connecting rod and the fourth connecting rod. The sixth tensioning member connects the fourth connecting rod and the fourth fixing rod.
9. The spot welding device according to claim 2, characterized in that, An included angle α is formed between the tin outlet pipe and the axial direction of the soldering iron tip, where 90° ≤ α < 180°.
10. A spot welding device, characterized in that, The spot welding device includes: The spot welding apparatus according to any one of claims 1 to 9; A gantry, on which a first guide rail is provided. The machine table is arranged inside the gantry. A second guide rail is provided on the machine table, and the second guide rail is arranged along the length direction of the machine table; A welding workbench, which is slidably connected to the second guide rail; The first guide rail is arranged along the width direction of the machine table, and the moving device is slidably connected to the first guide rail.