Double-end servo robot welding pliers

Abstract

The invention discloses a pair of double-end servo robot welding tongs, which relates to the field of welding equipment, and comprises a U-shaped bottom frame, a mechanical arm, a servo motor and a servo motor, the working table is arranged in the U-shaped bottom frame, and the working table and the U-shaped bottom frame are arranged in a crossed structure; the fixing plates are symmetrically arranged at the inner bottom of the U-shaped bottom frame; the rack is arranged on the opposite sides of the two groups of fixing plates; the first electrode holder assembly is arranged at the inner tops of the two sets of racks; the second electrode holder assembly is arranged on one side of the workbench and located on one side of the U-shaped bottom frame. The liquid cooling assembly is arranged on one side of the workbench and is matched with the first electrode holder assembly and the second electrode holder assembly; the adjusting assembly is arranged at the top end of the workbench and matched with the rack. Through the synergistic effect of the first electrode holder assembly which is vertically and stereoscopically arranged and the second electrode holder assembly which is arranged on the side, the effective operation space of the mechanical arm is expanded, the multi-directional welding requirements of complex structural parts can be flexibly met, and the overall welding time consumption of batch workpieces is shortened.

Description

Technical Field

[0001] This invention relates to the field of welding equipment, and more specifically, to a dual-head servo robot welding clamp. Background Technology

[0002] With the continuous improvement of industrial automation, welding, as one of the core processes in manufacturing, is rapidly evolving towards automation, intelligence, and high precision. The dual-head servo robot welding gun, as a significant innovation in modern intelligent welding equipment, leverages its dual-point synchronous operation capability and highly integrated servo control system to achieve efficient, stable, and precise welding operations in complex and ever-changing production environments. In high-end manufacturing sectors such as automotive manufacturing and aerospace, where welding quality and consistency requirements are extremely stringent, this equipment not only significantly improves weld quality and structural reliability but also effectively shortens cycle time, greatly enhancing overall production efficiency.

[0003] Existing servo robot welding guns suffer from insufficient accessibility due to the limited working space of a single welding gun when dealing with workpieces with complex structures and diverse weld point distributions. This severely restricts the flexibility of welding path planning and operational safety. Furthermore, the single-station sequential operation mode limits the robot's effective utilization to the welding process itself, resulting in a significant cycle time bottleneck and making it difficult to meet the high efficiency demands of mass production. During continuous welding, the heat generated by the continuous high current flowing through the electrode tip is difficult to dissipate quickly, easily leading to electrode burn-out and drift in welding process parameters, directly affecting the consistency of weld quality and the stability of continuous equipment operation.

[0004] Furthermore, when production lines need to adapt to products of different specifications, traditional welding gun systems often exhibit poor flexibility and slow changeover response due to cumbersome mechanical adjustments and time-consuming program resetting. The traditional welding gun design, which is more integrated into the robot's end effector, suffers from a concentrated load that degrades the robot's motion dynamics, limiting its operating speed and accuracy. Meanwhile, the welding gun's own key performance characteristics may be difficult to maintain consistently across the entire workspace due to posture changes, creating a bottleneck for improving the overall performance of the equipment.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Summary of the Invention

[0006] In response to the problems in related technologies, this invention proposes a dual-head servo robot welding gun to overcome the aforementioned technical problems existing in the prior art.

[0007] Therefore, the specific technical solution adopted by the present invention is as follows: A dual-head servo robot welding gun includes: a U-shaped base frame mounted on the output end of a robotic arm; a worktable disposed inside the U-shaped base frame and arranged in a cross-structure with the U-shaped base frame; fixed plates symmetrically disposed on the inner bottom of the U-shaped base frame; a frame disposed on one side facing the two sets of fixed plates; a first welding gun assembly disposed on the inner top of the two sets of frames; a second welding gun assembly disposed on one side of the worktable and located on one side of the U-shaped base frame; a liquid cooling assembly disposed on one side of the worktable and cooperating with the first and second welding gun assemblies; an adjustment assembly disposed on the top of the worktable and cooperating with the frame; and two sets of transformers disposed on one side of the first and second welding gun assemblies respectively and cooperating with the first and second welding gun assemblies.

[0008] Furthermore, to ensure the coaxiality and uniform contact pressure of the upper and lower electrodes when closed, the first welding clamp assembly includes a first limiting block, a second limiting block, and an electrode head assembly disposed between the two sets of frames; a first copper strip soft sleeve is installed between the first limiting block, the second limiting block, and the electrode head assembly; a first support column is symmetrically installed on the top of the second limiting block, and a first electrode arm that mates with the electrode head assembly is disposed on the inner top between the first support columns. The electrode head assembly includes a movable shaft disposed between the two sets of frames, with movable arms symmetrically sleeved on the outer circumference of the movable shaft; a second support column is disposed on the inner top between the two sets of movable arms, and a first electrode head that mates with the first electrode arm is disposed on the inner top between the two sets of second support columns; a movable protrusion is disposed on the inner bottom between the two sets of movable arms, the bottom end of the movable protrusion is connected to the output end of a first cylinder, and the first cylinder is fixed between the two sets of second support columns; the first cylinder is connected to the two sets of second support columns via a pad; a transformer is disposed on one side of the first cylinder.

[0009] Furthermore, to enhance the equipment's adaptability to diverse products, the second welding clamp assembly includes another set of transformers located on one side of the workbench. A second cylinder is mounted at one end of each transformer, and the output end of the second cylinder is connected to a second electrode arm. A mounting block is fitted around the outer circumference of the second electrode arm, and a second copper strip sleeve is provided between the mounting block and the U-shaped base. A fixing seat is located at one end of the U-shaped base, and a second electrode head that mates with the second electrode arm is located at one end of the fixing seat. An auxiliary rod is positioned between the second electrode head and the workbench.

[0010] Furthermore, to effectively delay the softening, deformation, and wear of the electrode material caused by high temperatures, the liquid cooling assembly includes a liquid cooling water tank located on the other side of the workbench, with a water pump installed inside. A water distributor, working in conjunction with the water pump, is located on one side of the liquid cooling water tank. The water distributor is connected via water pipes to several nozzles that mate with the first and second electrode heads. The water distributor consists of a cold water outlet for cooling the first and second electrode heads and a cold water inlet for replenishing the cold water.

[0011] Furthermore, in order to quickly adapt to different scenarios and improve equipment utilization and production line switching efficiency, a movable rod is set between the fixed plate and the frame, and it is coordinated with the adjustment component.

[0012] Furthermore, in order to adapt to workpieces of different sizes and weld point layouts and improve the equipment's versatility for diverse welding needs, the adjustment component includes a connecting rod set between two sets of frames. The outer circumference of the connecting rod is fitted with two sets of L-shaped support rods. The middle positions of the two sets of L-shaped support rods are connected by a fixed rod. The outer circumference of the fixed rod is fitted with a movable ring. The outer circumference of the movable ring is connected to the output end of the third cylinder. The tail of the third cylinder is movably connected to the top of the worktable.

[0013] Furthermore, to ensure a stable connection between the U-shaped base and the robotic arm, a connecting flange that mates with the robotic arm is provided on one side of the U-shaped base.

[0014] The beneficial effects of this invention are as follows: 1. This invention boasts a rational and reliable structure. Through the coordinated operation of the vertically arranged first welding clamp assembly and the side-mounted second welding clamp assembly, the effective working space of the robotic arm is expanded, enabling the equipment to flexibly handle the multi-directional welding needs of complex structural components. This effectively reduces the risk of motion interference, and the dual-station operation can be synchronized or alternated, shortening the overall welding time for batches of workpieces. Combined with the liquid cooling assembly for precise directional cooling of the electrode head after the welding cycle, rapid heat dissipation is achieved. Furthermore, the adjustable components allow for flexible adjustment of the frame position and angle, enabling the equipment to quickly adapt to workpieces of different sizes and weld point layouts, enhancing product changeover responsiveness and versatility. This ensures that the first welding clamp assembly maintains stable pressure performance and welding accuracy in any working position. With the coordinated operation of all components, welding efficiency, quality consistency, and equipment adaptability are improved. The external layout and distributed load also optimize system motion performance, achieving efficient, stable, and flexible automated welding operations.

[0015] 2. By setting up a first welding clamp assembly and a second welding clamp assembly, the effective working range of the robotic arm is expanded through the vertically arranged first welding clamp assembly and the side-mounted second welding clamp assembly. The second welding clamp assembly and the first welding clamp assembly form a multi-station cooperation, which can carry out welding operations simultaneously or alternately, shortening the welding time of batch workpieces. Furthermore, the independent transformer and copper strip soft sleeve provided by the assembly can ensure the current stability when the two components are operating, avoiding mutual interference. This greatly reduces the risk of motion interference when welding complex structural parts and enhances the equipment's adaptability to diverse products.

[0016] 3. This invention, by incorporating a liquid cooling component, precisely sprays coolant onto the first and second electrode heads after each welding cycle, achieving rapid and active dissipation of accumulated heat. This stabilizes the electrode head operating temperature within a reasonable range, effectively delaying softening, deformation, and wear of the electrode material caused by high temperatures, extending the electrode head replacement cycle and service life, ensuring the stability of the current density at subsequent weld points, and improving the consistency of welding quality. Simultaneously, it quickly restores the electrode head temperature to a suitable operating range, preventing excessively high electrode head temperatures from affecting weld fusion quality and conductivity stability during subsequent welding. This ensures the consistency of weld quality in continuous welding operations, eliminating the need to wait for natural cooling before starting the next round of welding. Combined with a dual-head welding clamp, this further enhances overall operational efficiency, and the precise water distribution design reduces coolant waste while achieving efficient heat dissipation, lowering operating costs.

[0017] 4. This invention, by incorporating an adjustment component and utilizing the linkage between the third cylinder-driven movable ring, fixed rod, and L-shaped support rod, allows for flexible adjustment of the frame's position and angle. This adapts to workpieces of different sizes and weld point layouts, enhancing the equipment's versatility for diverse welding needs. Simultaneously, the L-shaped support rod maintains reliable rigid support throughout the welding clamp's working height, effectively preventing mechanical vibration or rigidity attenuation caused by position adjustments. This ensures consistent pressure stability and welding accuracy for the first welding clamp assembly in any working position, guaranteeing uniform and reliable weld quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is one of the structural schematic diagrams of a dual-head servo robot welding gun according to an embodiment of the present invention; Figure 2 This is a second schematic diagram of the structure of a dual-head servo robot welding gun according to an embodiment of the present invention; Figure 3 This is one of the partial cross-sectional views of a dual-head servo robot welding gun according to an embodiment of the present invention; Figure 4 yes Figure 3 Enlarged view of point A in the image; Figure 5 This is a second partial cross-sectional view of a welding gun for a dual-headed servo robot according to an embodiment of the present invention; Figure 6This is a third partial cross-sectional view of a welding gun for a dual-headed servo robot according to an embodiment of the present invention; Figure 7 This is one of the schematic diagrams of the structure of a dual-head servo robot welding clamp after adjustment by an adjustment component according to an embodiment of the present invention; Figure 8 This is a second schematic diagram of the structure of a dual-head servo robot welding clamp after adjustment by an adjustment component according to an embodiment of the present invention.

[0020] In the picture: 1. U-shaped base frame; 2. Workbench; 3. Fixing plate; 4. Frame; 5. First welding clamp assembly; 501. First limiting block; 502. Second limiting block; 503. Electrode head assembly; 5031. Movable shaft; 5032. Movable arm; 5033. Second support column; 5034. First electrode head; 5035. Movable protrusion; 5036. First cylinder; 5037. Pad plate; 504. First copper strip soft sleeve; 505. First support column; 506. First electrode arm; 6. Second welding clamp assembly; 601. Second cylinder; 602. 603. Second electrode arm; 604. Mounting block; 605. Second copper strip soft sleeve; 606. Fixing seat; 607. Second electrode head; 708. Liquid cooling assembly; 709. Liquid cooling water tank; 7000. Water pump; 7001. Cold water outlet; 7002. Water inlet; 7003. Water distributor; 701. Spray nozzle; 802. Adjustment assembly; 803. Connecting rod; 804. L-shaped support rod; 805. Fixing rod; 806. Movable ring; 807. Third cylinder; 9. Transformer; 10. Movable rod; 11. Auxiliary rod; 12. Connecting flange. Detailed Implementation

[0021] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] According to an embodiment of the present invention, a dual-head servo robot welding clamp is provided.

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-8As shown, a dual-head servo robot welding clamp according to an embodiment of the present invention includes: a U-shaped base frame 1, mounted on the output end of the robotic arm; a worktable 2, disposed inside the U-shaped base frame 1 and arranged in a cross structure with the U-shaped base frame 1; fixing plates 3, symmetrically disposed on the inner bottom of the U-shaped base frame 1; a frame 4, disposed on one side of the two sets of fixing plates 3 facing each other; a first welding clamp assembly 5, disposed on the inner top of the two sets of frames 4; a second welding clamp assembly 6, disposed on one side of the worktable 2 and located on one side of the U-shaped base frame 1; a liquid cooling assembly 7, disposed on one side of the worktable 2 and cooperating with the first welding clamp assembly 5 and the second welding clamp assembly 6; an adjustment assembly 8, disposed on the top of the worktable 2 and cooperating with the frame 4; and two sets of transformers 9, respectively disposed on one side of the first welding clamp assembly 5 and the second welding clamp assembly 6 and cooperating with the first welding clamp assembly 5 and the second welding clamp assembly 6.

[0024] By utilizing the aforementioned technical solutions, the effective working space of the robotic arm is expanded through the coordinated operation of the vertically arranged first welding clamp assembly 5 and the side-mounted second welding clamp assembly 6. This allows the equipment to flexibly handle the multi-directional welding needs of complex structural components, effectively reducing the risk of motion interference. Simultaneously, the two stations can operate synchronously or alternately, shortening the overall welding time for batches of workpieces. The liquid cooling assembly 7 provides precise directional cooling of the electrode head after the welding cycle, achieving rapid heat dissipation. Furthermore, the position and angle of the frame 4 can be flexibly adjusted by the adjustment assembly 8, enabling the equipment to quickly adapt to workpieces of different sizes and weld point layouts. This enhances the responsiveness and versatility for product changeovers, ensuring that the first welding clamp assembly 5 maintains stable pressure performance and welding accuracy in any working position. With the coordinated operation of all components, welding efficiency, quality consistency, and equipment adaptability are improved. The external layout and distributed load also optimize the system's motion performance, achieving efficient, stable, and flexible automated welding operations.

[0025] In one embodiment, the first welding clamp assembly 5 includes a first limiting block 501 and a second limiting block 502 disposed between two sets of frames 4 and an electrode head 503; a first copper strip soft sleeve 504 is respectively installed between the first limiting block 501, the second limiting block 502 and the electrode head 503; a first support column 505 is symmetrically installed on the top of the second limiting block 502, and a first electrode arm 506 that cooperates with the electrode head 503 is provided on the inner top between the first support columns 505. The electrode head assembly 503 includes a movable shaft 5031 disposed between two sets of frames 4. Movable arms 5032 are symmetrically fitted onto the outer circumference of the movable shaft 5031. A second support column 5033 is disposed at the inner top between the two sets of movable arms 5032. A first electrode head 5034, cooperating with a first electrode arm 506, is disposed at the inner top between the two sets of second support columns 5033. A movable protrusion 5035 is disposed at the inner bottom between the two sets of movable arms 5032. The bottom end of the movable protrusion 5035 is connected to the output end of a first cylinder 5036, and the first cylinder 5036 is fixed between the two sets of second support columns 5033. The first cylinder 5036 is connected to the two sets of second support columns 5033 via a pad 5037. A transformer 9 is disposed on one side of the first cylinder 5036. This ensures the coaxiality and uniformity of contact pressure of the upper and lower electrodes when closed.

[0026] The specific working principle of the first welding clamp assembly 5 is as follows: After the first cylinder 5036 is started, its output end pushes the movable protrusion 5035, which drives the two sets of movable arms 5032 to rotate synchronously around the movable shaft 5031. The movable arm 5032, in conjunction with the second support column 5033 and the first electrode head 5034, moves towards the first electrode arm 506, and finally precisely docks with the first electrode arm 506 between the first support column 505 and clamps the workpiece to be welded. The rigid structure formed by the symmetrically distributed movable arms 5032 and the movable shaft 5031 ensures the concentration and uniform transmission of pressure, while the first copper strip soft sleeve 504 provides a reliable and low-impedance current path for this moving part, which, together with the transformer 9 arranged on the side, delivers a stable large current to the welding point, and finally forms a high-quality weld point between the first electrode head 5034 and the first electrode arm 506. After the welding is completed, the first cylinder 5036 retracts.

[0027] In one embodiment, the second welding clamp assembly 6 includes another set of transformers 9 disposed on one side of the workbench 2. A second cylinder 601 is disposed at one end of each transformer 9. The output end of the second cylinder 601 is connected to a second electrode arm 602. A mounting block 603 is fitted onto the outer circumference of the second electrode arm 602. A second copper strip soft sleeve 604 is disposed between the mounting block 603 and the U-shaped base 1. A fixing seat 605 is disposed at one end of the U-shaped base 1. A second electrode head 606, which cooperates with the second electrode arm 602, is disposed at one end of the fixing seat 605. An auxiliary rod 11 is disposed between the second electrode head 606 and the workbench 2. This enhances the equipment's adaptability to diverse products.

[0028] The specific working principle of the second welding clamp assembly 6 is as follows: The second cylinder 601 pushes the second electrode arm 602 to move towards the second electrode head 606 fixed at the end of the U-shaped base frame 1. Under the stable guidance and support of the auxiliary rod 11, the two precisely close and apply uniform pressure to the workpiece. At the same time, the large current provided by the transformer 9 is stably and efficiently transmitted to the second electrode arm 602 through the highly flexible conductive medium of the second copper strip sleeve 604, thereby forming a reliable welding circuit between the electrodes and completing a high-quality weld.

[0029] In one embodiment, the liquid cooling assembly 7 includes a liquid cooling water tank 701 located on the other side of the workbench 2, with a water pump 702 installed inside the tank. A water distributor 703, cooperating with the water pump 702, is located on one side of the tank. The distributor 703 is connected via water pipes to several nozzles 704 that cooperate with the first electrode head 5034 and the second electrode head 606. The distributor 703 consists of a cold water outlet 7021 for cooling the first electrode head 5034 and the second electrode head 606, and a cold water inlet 7022 for replenishing cold water. This effectively delays the softening, deformation, and wear of the electrode material caused by high temperatures.

[0030] It should be noted that the coolant used in the liquid cooling component 7 is high-purity deionized water or a special water-based synthetic coolant, which can achieve rapid and precise cooling of the first electrode head 5034 and the second electrode head 606. The cold water outlet 7021 is connected to the two sets of nozzles 704 through water pipes, which are not shown in the figure. This is existing technology and will not be elaborated on here.

[0031] The specific working principle of the liquid cooling component 7 is as follows: After each welding cycle is completed, the water pump 702 starts, and the coolant in the liquid cooling tank 701 enters the water distributor 703. Through its cold water outlet 7021, the coolant is precisely distributed to the nozzles 704 corresponding to the first electrode head 5034 and the second electrode head 606. The nozzles 704 spray a uniform flow of coolant onto the surface of the high-temperature electrode head, realizing the active, efficient and immediate dissipation of the heat accumulated during welding. Subsequently, the staff replenishes the liquid cooling tank 701 with coolant through the inlet 7022, thereby quickly restoring the electrode head temperature to a stable working range and ensuring the consistency of electrode state and welding heat input in subsequent welding.

[0032] In one embodiment, a movable rod 10 is provided between the fixed plate 3 and the frame 4, and is coordinated with the adjusting component 8. This allows for quick adaptation to different scenarios, improving equipment utilization and production line changeover efficiency.

[0033] It should be noted that one side corner of both racks 4 is rounded and is designed to work in conjunction with the adjustment assembly 8.

[0034] In one embodiment, the adjustment assembly 8 includes a connecting rod 801 disposed between two sets of frames 4. Two sets of L-shaped support rods 802 are fitted around the outer circumference of the connecting rod 801. The two sets of L-shaped support rods 802 are connected at their midpoints by a fixing rod 803. A movable ring 804 is fitted around the outer circumference of the fixing rod 803. The outer circumference of the movable ring 804 is connected to the output end of a third cylinder 805. The tail of the third cylinder 805 is movably connected to the top of the worktable 2. This allows the assembly to adapt to workpieces of different sizes and weld point layouts, improving the equipment's versatility for diverse welding needs.

[0035] The specific working principle of the adjustment component 8 is as follows: When facing changes in the required height or angle of the welding clamp under different working conditions, the third cylinder 805 drives its output end to extend and retract, causing the movable ring 804 to move along the axial direction of the fixed rod 803. Then, through the fixed rod 803, the two sets of L-shaped support rods 802 are pulled to perform synchronous and stable pivoting motion with the connecting rod 801 as the axis. This precisely adjusts the overall height or tilt angle of the frame 4 and the fixed plate 3 connected to the L-shaped support rod 802, so that the first welding clamp component 5 installed on it can quickly adapt to workpieces of different sizes, contours or welding point positions. After adjustment, the rigid structure formed by the L-shaped support rod 802 and the connecting rod 801 maintains stable support, ensuring the positioning accuracy and pressure stability of the welding process.

[0036] In one embodiment, the U-shaped base frame 1 has a connecting flange 12 on one side that mates with the robotic arm. This ensures a stable connection between the U-shaped base frame 1 and the robotic arm.

[0037] To facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process will be described in detail below.

[0038] like Figures 1-8 As shown, in practical applications, the operator first installs the welding clamp as a whole on the output end of the robotic arm through the connecting flange 12. According to the workpieces of different sizes and welding point layouts, under the assistance and guidance of the operator, the L-shaped support rod 802 is driven by the third cylinder 805 through the adjustment component 8, which drives the frame 4 and the first welding clamp assembly 5 to rise or deflect, and accurately position it to the target welding height to adapt to workpieces of different sizes and welding point layouts.

[0039] During the welding process, the first welding clamp assembly 5 is driven by the first cylinder 5036 to open the movable arm 5032. After reaching the designated position, the first electrode head 5034 and the first electrode arm 506 close and apply pressure to weld the target workpiece. At the same time, the second welding clamp assembly 6 on the side is driven by the second cylinder 601 to open the second electrode arm 602. After reaching the designated position, it cooperates with the fixed second electrode head 606 to apply pressure. The two sets of transformers 9 respectively deliver stable high current through the first copper strip soft sleeve 504 and the second copper strip soft sleeve 604 to complete the dual-station synchronous or alternating welding.

[0040] After each welding cycle, the liquid cooling assembly 7 automatically starts. The water pump 702 pumps coolant from the liquid cooling tank 701 into the water distributor 703, and sprays coolant streams onto the surfaces of the first electrode head 5034 and the second electrode head 606 through the nozzle 704. This quickly dissipates residual heat, allowing the electrode head temperature to rapidly return to a stable operating range, ensuring consistent welding quality throughout the continuous welding process. The components work in tandem in this cycle to achieve efficient, precise, and adaptive automated welding operations.

[0041] The specific working principles of the first welding clamp assembly 5, the second welding clamp assembly 6, the liquid cooling assembly 7, and the adjustment assembly 8 are as described above.

[0042] In summary, by utilizing the technical solution of this invention, the effective working space of the robotic arm is expanded through the coordinated action of the vertically arranged first welding clamp assembly 5 and the side-mounted second welding clamp assembly 6. This allows the equipment to flexibly handle the multi-directional welding needs of complex structural components, effectively reducing the risk of motion interference. Simultaneously, the two stations can operate synchronously or alternately, shortening the overall welding time for batches of workpieces. The precise directional cooling of the electrode head by the liquid cooling assembly 7 after the welding cycle achieves rapid heat dissipation. Furthermore, the position and angle of the frame 4 can be flexibly adjusted by the adjustment assembly 8, enabling the equipment to quickly adapt to workpieces of different sizes and weld point layouts, enhancing the responsiveness and versatility for product changes, and ensuring that the first welding clamp assembly 5 maintains stable pressure performance and welding accuracy in any working position. With the coordinated operation of all components, welding efficiency, quality consistency, and equipment adaptability are improved, while the external layout and distributed load optimize the system's motion performance, achieving efficient, stable, and flexible automated welding operations. This invention expands the effective working range of the robotic arm by setting up a first welding clamp assembly 5 and a second welding clamp assembly 6. The first welding clamp assembly 5, arranged vertically, and the second welding clamp assembly 6, arranged laterally, form a multi-station cooperation with the first welding clamp assembly 5, which can carry out welding operations simultaneously or alternately, shortening the welding time of batch workpieces. Furthermore, the independent transformer 9 and the first copper strip soft sleeve 504 and the second copper strip soft sleeve 604, which are matched with it, can ensure the current stability when the two components are working, avoid mutual interference, greatly reduce the risk of motion interference when welding complex structural parts, and enhance the adaptability of the equipment to diverse products. This invention, by incorporating a liquid cooling component 7, precisely sprays coolant into the first electrode head 5034 and the second electrode head 606 after each welding cycle. This achieves rapid and active dissipation of accumulated heat, thereby stabilizing the operating temperature of either electrode head 5034 or the second electrode head 606 within a reasonable range. This effectively delays softening, deformation, and wear of the electrode material caused by high temperatures, extends the replacement cycle and service life of the electrode heads, ensures the stability of the current density at subsequent weld points, and improves the consistency of welding quality. Simultaneously, it can quickly restore the electrode head temperature to a suitable operating range, preventing excessively high electrode head temperatures from affecting the weld fusion quality and conductivity stability during subsequent welding. This ensures the consistency of weld quality in continuous welding operations, allowing for the start of the next round of welding without waiting for natural cooling. Combined with a dual-head welding clamp, this further enhances overall operational efficiency, and the precise water distribution design reduces coolant waste while achieving efficient heat dissipation, lowering operating costs. By setting up an adjustment component 8, the present invention utilizes the linkage between the third cylinder 805 driving the movable ring 804, the fixed rod 803, and the L-shaped support rod 802 to flexibly adjust the position and angle of the frame 4, adapting to workpieces of different sizes and weld point layouts, thereby improving the equipment's versatility for diverse welding needs.Meanwhile, the L-shaped support rod 802 maintains reliable rigid support when the welding clamp working height is changed, effectively avoiding mechanical vibration or rigidity attenuation caused by position adjustment. This ensures that the first welding clamp assembly can maintain consistent pressure stability and welding accuracy in any working position, guaranteeing uniform and reliable weld quality.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual head servo robot welding gun characterized by, include: U-shaped base frame (1) is installed at the output end of the robotic arm; The workbench (2) is located inside the U-shaped base frame (1) and is arranged in a cross structure with the U-shaped base frame (1); A fixing plate (3) is symmetrically arranged at the inner bottom of the U-shaped base frame (1); The frame (4) is located on one side of the two sets of fixing plates (3) facing each other; The first welding clamp assembly (5) is located at the inner top of the two sets of frames (4); The second welding clamp assembly (6) is disposed on one side of the workbench (2) and located on one side of the U-shaped base frame (1); A liquid cooling assembly (7) is disposed on one side of the workbench (2) and cooperates with the first welding clamp assembly (5) and the second welding clamp assembly (6); Adjustment component (8) is located at the top of the workbench (2) and cooperates with the frame (4); Two sets of transformers (9) are respectively disposed on one side of the first welding clamp assembly (5) and the second welding clamp assembly (6), and cooperate with the first welding clamp assembly (5) and the second welding clamp assembly (6).

2. A dual head servo robot welding gun according to claim 1, wherein The first welding clamp assembly (5) includes a first limiting block (501) and a second limiting block (502) disposed between the two sets of the frame (4) and an electrode head (503); A first copper strip soft sleeve (504) is installed between the first limiting block (501), the second limiting block (502), and the electrode head (503). The top of the second limiting block (502) is equipped with symmetrically mounted first support columns (505), and the inner top between the first support columns (505) is provided with a first electrode arm (506) that cooperates with the electrode head (503).

3. A dual head servo robot welding gun according to claim 2, wherein The electrode head (503) includes a movable shaft (5031) disposed between the two sets of the frame (4), movable arms (5032) are symmetrically sleeved on the outer circumference of the movable shaft (5031), a second support column (5033) is disposed on the inner top between the two sets of movable arms (5032), and a first electrode head (5034) that cooperates with the first electrode arm (506) is disposed on the inner top between the two sets of second support columns (5033). A movable protrusion (5035) is provided on the inner bottom between the two sets of movable arms (5032). The bottom end of the movable protrusion (5035) is connected to the output end of the first cylinder (5036), and the first cylinder (5036) is fixed between the two sets of second pillars (5033). The first cylinder (5036) is connected to the two sets of second pillars (5033) by a pad (5037); A set of the transformers (9) is provided on one side of the first cylinder (5036).

4. A dual head servo robot welding gun according to claim 3, wherein The second welding tongs assembly (6) comprises another set of transformers (9) arranged on one side of the workbench (2), one end of the transformer (9) is provided with a second air cylinder (601), the output end of the second air cylinder (601) is connected with a second electrode arm (602), the circumferential outer wall of the second electrode arm (602) is sleeved with a mounting block (603), and the mounting block (603) is provided with a second copper belt soft sleeve (604) between the U-shaped chassis (1); One end of the U-shaped chassis (1) is provided with a fixing seat (605), one end of the fixing seat (605) is provided with a second electrode head (606) matched with the second electrode arm (602).

5. A dual head servo robot tongs according to claim 4, wherein, The second electrode head (606) is provided with an auxiliary rod (11) between the workbench (2).

6. A dual head servo robot tongs according to claim 4, wherein, The liquid cooling assembly (7) comprises a liquid cooling water tank (701) arranged on the other side of the workbench (2), and the inside of the liquid cooling water tank (701) is provided with a water pump (702); One side of the liquid cooling water tank (701) is provided with a water distribution device (703) matched with the water pump (702), and the water distribution device (703) is respectively connected with a plurality of spray heads (704) matched with the first electrode head (5034) and the second electrode head (606) through water pipes.

7. A dual head servo robot tongs according to claim 6, wherein, The water distribution device (703) is composed of a cold water outlet (7021) for cooling the first electrode head (5034) and the second electrode head (606) and a water inlet (7022) for supplementing cold water.

8. A dual head servo robot welding gun according to claim 1 wherein, The movable rod (10) is arranged between the fixing plate (3) and the rack (4) and is matched with the adjusting assembly (8).

9. A dual head servo robot tongs according to claim 8, wherein, The adjusting assembly (8) comprises a connecting rod (801) arranged between the two sets of racks (4), the circumferential outer wall of the connecting rod (801) is sleeved with two sets of L-shaped supporting rods (802), the middle positions of the two sets of L-shaped supporting rods (802) are connected through a fixing rod (803), the circumferential outer wall of the fixing rod (803) is sleeved with a movable ring (804), and the circumferential outer wall of the movable ring (804) is connected with the output end of a third air cylinder (805); The tail of the third air cylinder (805) is movably connected with the top of the workbench (2).

10. The dual head servo robotic welding gun of claim 1 wherein, One side of the U-shaped chassis (1) is provided with a connecting flange (12) matched with a mechanical arm.

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