Clamping stable type high-frequency inverter type spot welding machine

Abstract

The invention discloses a stable clamping type high-frequency inversion type spot welding machine and belongs to the technical field of high-frequency inversion type spot welding machines. The stable clamping type high-frequency inversion type spot welding machine comprises a supporting table and a high-frequency control box fixed to the supporting table, spot welding equipment for machining steel pipes is installed on the high-frequency control box, and an electric sliding rail assembly is fixedly installed on the supporting table; a workbench is installed at the sliding end of the electric sliding rail assembly. A supporting column is longitudinally fixed to the workbench, a guide sliding rod is vertically fixed to the supporting column, the guide sliding rod is sleeved with a movable frame in a sliding mode, and a clamping rod for limiting the machining position of a steel pipe is fixedly installed on the movable frame. The workbench is further provided with a limiting mechanism for further reinforcing and adjusting the spot welding machining positions and the welding distance of the two sets of steel pipes. According to the electric welding machine, the machining position of a steel pipe can be stably clamped before welding machining, the welding gap of the steel pipe is shortened, a foundation is provided for precise welding, in the spot welding machining process, heat in a high-frequency control box can be rapidly dissipated, and spot welding can be safely and stably carried out.

Description

Technical Field

[0001] This invention relates to the field of high-frequency inverter spot welding machine technology, specifically a clamping-stabilized high-frequency inverter spot welding machine. Background Technology

[0002] Steel pipes possess both high strength and good plasticity, making them a commonly used pipe material in industry. Spot welding of steel pipes involves locally heating and melting the contact points of the steel pipes to form spot welds. High-frequency inverter spot welding machines are commonly used equipment for spot welding of steel pipes. They have a fast response speed and can linearly increase the current from 0 to the maximum value in a very short time, greatly shortening the preheating time. Their performance is affected by a combination of factors, including rectification triggering accuracy, circuit anti-interference capability, heat dissipation system efficiency, and energy transmission matching degree.

[0003] For example, patent CN207255457U discloses a dual-needle microcomputer high-frequency inverter spot welding machine, which includes a chassis and a first welding needle and a second welding needle arranged side by side on the same surface of the chassis; the first welding needle includes a first body and a first spot welding head located at the end of the first body; the second spot welding needle includes a second body and a second spot welding head located at the end of the second body; at least one of the first welding needle and the second welding needle also includes an extension section extending from the spot welding head to the spot welding head of the other welding needle; the first spot welding head and the second spot welding head are arranged opposite to each other, and a gap is provided between the first spot welding head and the second spot welding head for clamping the workpiece to be welded; by setting the contact surface between the workpiece to be welded and the two welding needles to be the same point on opposite sides of the workpiece to be welded, the requirement of 1 / 2 welding area is reduced, and a smaller area of ​​workpiece to be welded can be welded.

[0004] For example, patent CN119525670A discloses a DSP high-frequency inverter desktop micro spot welding machine, including a machine tool. A welding host is fixedly installed inside the machine tool. A linear drive mechanism is fixedly installed on the bottom inner wall of the machine tool. The output end of the linear drive mechanism is fixedly installed on the spot welding machine body. A heat dissipation device is fixedly installed on the outer wall of the machine tool. A three-color lamp is fixedly installed on the top of the machine tool. A rectangular plate is fixedly installed on the bottom inner wall of the machine tool. A rectangular groove is opened on the side of the rectangular plate near the spot welding machine body. The fixing device includes a pull rod, a mounting table, a loading plate, a welding part, a sliding table, a flexible block, a tungsten wire, a linkage plate, a rubber plate, a push plate, a No. 1 spring, and a limit rod. By standardizing the operation, the welding part and the tungsten wire are bonded together, and the operator can easily adjust the bonding angle in a safe area, which helps to improve the quality of spot welding.

[0005] For example, patent CN217412777U discloses an intelligent high-frequency inverter spot welding machine, including a machine body. A handle is rotatably connected to the top of the machine body, and sliding sleeves are fixedly connected to both sides of the machine body. A sliding rod is slidably connected inside the sliding sleeve, and a suction cup is fixedly connected to the bottom of the sliding rod. A spring is sleeved on the outer diameter of the top of the sliding rod, and a connecting rope is fixedly connected to the top of the sliding rod. The machine body is attached to the ground by the suction cup. When the machine body needs to be moved, the handle is closed and lifted, facilitating the carrying and movement of the equipment. Simultaneously, the sliding rod and suction cup can be automatically pulled upwards to release the suction cup from the ground. When the spot welding machine is placed on the ground... Under the tension of the spring, the handle automatically opens, and the sliding rod and suction cup slide downwards to allow the suction cup to adhere to the ground and be fixed. This allows the device to automatically adhere to the ground and be fixed after placement. When spot welding steel pipes with a high-frequency inverter spot welding machine, if the steel pipes are not firmly fixed, they may shift due to the thermal effect of the current or the influence of electrode pressure during spot welding. This can cause the originally set weld point to deviate from the butt joint, resulting in a misaligned weld. This makes it impossible to effectively connect the two steel pipes. Furthermore, if the distance between the two steel pipes to be spot welded is large, it will directly lead to the inability to effectively transfer the welding heat to the butt joint area, making it difficult to form a continuous and strong weld nugget. Ultimately, this will cause the weld connection to fail or have insufficient strength.

[0006] To address the aforementioned issues, there is an urgent need for innovative design based on the existing high-frequency inverter spot welding machine. Summary of the Invention

[0007] The purpose of this invention is to provide a clamping and stabilizing high-frequency inverter spot welding machine to solve the problems mentioned in the background art. If the steel pipe is not fixed firmly, it will shift during spot welding due to the thermal effect of the current or the influence of the electrode pressure, causing the originally set weld point to deviate from the butt joint and resulting in a weld misalignment. This makes it impossible to effectively connect the two steel pipes. If the distance between the two steel pipes to be spot welded is large, it will directly cause the welding heat to be unable to be effectively transferred to the butt joint area, making it difficult to form a continuous and firm weld nugget, ultimately causing the weld connection to fail or have serious insufficient strength.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A clamping and stabilizing high-frequency inverter spot welding machine includes a support platform and a high-frequency control box fixed on the support platform. The high-frequency control box is equipped with spot welding equipment for processing steel pipes. An electric slide rail assembly is fixedly installed on the support platform, and a worktable is installed on the sliding end of the electric slide rail assembly. A support column is longitudinally fixed on the worktable, and a guide slide rod is vertically fixed on the support column. A movable frame is slidably sleeved on the guide slide rod, and a clamping rod that limits the processing position of the steel pipe is fixedly installed on the movable frame. A slide rail is provided on the worktable, and the movable frame is slidably connected inside the slide rail. A limiting mechanism is also provided on the worktable to further reinforce and adjust the spot welding positions and welding distances of the two sets of steel pipes.

[0009] Preferably, the limiting mechanism includes a guide slide rod and a support frame on the worktable that are fixedly installed. A lifting frame is longitudinally slidably connected to the support frame, and a pressure rod is fixedly installed on the lifting frame. Two sets of pressure rods are symmetrically arranged about the moving frame, and the pressure rods move down and press against the upper end face of the steel pipe.

[0010] Preferably, a cylinder is fixedly installed on the workbench, and a slip ring is fixedly connected to the output end of the cylinder. The slip ring is slidably sleeved on the outside of the support column. A transmission rod is rotatably connected to the slip ring, and the transmission rod is rotatably connected to the moving frame. The slip ring is fixedly connected to the lifting frame.

[0011] Preferably, a rotating ring is rotatably sleeved on the pressure rod, and a push block is inclinedly connected to the rotating ring; a vertical frame is fixed to the upper end face of the pressure rod, and a spring sheet is elastically connected between the frame and the push block.

[0012] Preferably, a heat sink is fixedly installed on the high-frequency control box, and a fan is installed in the heat sink; multiple sets of heat absorption components are equally spaced and fitted on the high-frequency control box, and the multiple sets of heat absorption components are correspondingly arranged next to the fan.

[0013] Preferably, the heat absorption component includes a fixed cylinder fitted into a high-frequency control box, and a heat-conducting cylinder is rotatably mounted on the fixed cylinder; the interior of the fixed cylinder and the interior of the heat-conducting cylinder are connected in a through connection, and a heat dissipation vent is provided on the side of the fixed cylinder near the fan.

[0014] Preferably, the heat-conducting cylinder has external heat dissipation fins symmetrically arranged about the central axis on its outer side, and internal heat dissipation fins symmetrically arranged about the central axis on its inner side.

[0015] Preferably, a cooling pipe is connected through the heat-conducting cylinder along the axial direction, and an inlet pipe and an outlet pipe are respectively connected to both ends of the cooling pipe, which are fixedly connected to the heat dissipation cover.

[0016] Preferably, a driven gear is fixedly installed on the heat-conducting cylinder along the axial direction, and a transmission gear is meshed next to the driven gear. The transmission gear is rotatably connected to the heat sink. A fixed rod is fixedly connected longitudinally to the inner wall of the heat sink. A lifting rod is slidably sleeved on the fixed rod. Multiple racks are fixed at equal intervals on the lifting rod, and the racks are meshed with the transmission gear.

[0017] Preferably, a crossbar is vertically fixed on the lifting rod, and a transmission bracket is slidably sleeved on the crossbar, with the transmission bracket being fixedly connected to the lifting frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are: when the clamping and stabilizing high-frequency inverter spot welding machine is spot welding steel pipes, the clamping rods on both sides of the steel pipe are moved relative to each other, and the clamping rods move and press against the joint area of ​​the two steel pipes to be welded, which initially limits the spot welding position of the steel pipe and maintains the accuracy and stability of the steel pipe welding position.

[0019] Furthermore, the workbench is equipped with a limiting mechanism to further reinforce and adjust the spot welding processing positions of the two sets of steel pipes. The running cylinder controls the lifting and moving of the slip ring. Under the rotation of the transmission rod, it can control the lateral movement of the moving frame and the clamping rod, and adjust the position of the clamping rod next to the steel pipe. During the movement of the slip ring, it can drive the lifting frame and the pressure rod to move longitudinally synchronously, so that the pressure rod presses against the upper end face of the two steel pipes, further pressing the steel pipes onto the surface of the workbench.

[0020] When the pressure bar is pressed against the surface of the steel pipe, the push block on the pressure bar first contacts the surface of the steel pipe. The push block is limited on the surface of the steel pipe by the compression spring. Under the transmission of the reaction force, the end faces of the two steel pipes can be brought closer together, reducing the distance of the weld seam between the two steel pipes and providing a basis for high-precision spot welding of the steel pipe.

[0021] Furthermore, multiple sets of heat-absorbing components are installed at equal intervals on the high-frequency control box. When the internal components of the high-frequency control box generate a large amount of heat, the heat is transferred to the outer heat sink, the heat-conducting cylinder, and the inner heat sink. The heat inside the heat-conducting cylinder is transferred to the fixed cylinder and discharged outward through the heat dissipation port. The discharged heat is quickly discharged outward through the heat dissipation cover with the assistance of the fan, achieving the purpose of rapid heat dissipation. Cooling pipes are arranged along the axial direction in the heat-conducting cylinder. The coolant is circulated into the cooling pipes through the inlet and outlet pipes. Through heat exchange, the temperature in the heat-conducting cylinder is further adjusted, thereby maintaining the heat-conducting cylinder's ability to continuously absorb and dissipate heat from inside the high-frequency control box.

[0022] The heat-conducting cylinder has symmetrically arranged outer and inner heat dissipation fins at both ends. When a set of steel pipes is clamped and loosened on the worktable, the lifting rod can be driven to move longitudinally back and forth once through the transmission support rod and crossbar. Under the meshing transmission of rack, transmission gear and driven gear, the heat-conducting cylinder can be driven to rotate back and forth once, alternating the positions of the symmetrical outer and inner heat dissipation fins on its surface on the high-frequency control box. The outer heat dissipation fins placed outside the high-frequency control box can dissipate heat quickly with the assistance of the fan. When it rotates into the high-frequency control box, it can fully absorb the heat inside the box, thereby dynamically absorbing and dissipating the heat in the box, and maintaining the high-frequency inverter spot welding machine to stably complete the welding process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the high-frequency control box structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the workbench structure of the present invention.

[0025] Figure 3 This is a schematic diagram of the lifting frame structure of the present invention.

[0026] Figure 4This is a schematic diagram of the clamping rod structure of the present invention.

[0027] Figure 5 This is a schematic diagram of the slip ring structure of the present invention.

[0028] Figure 6 This is a schematic diagram of the pressure bar structure of the present invention.

[0029] Figure 7 This is a schematic diagram of the pusher block structure of the present invention.

[0030] Figure 8 This is a schematic diagram of the spot welding equipment of the present invention.

[0031] Figure 9 This is a schematic diagram of the heat-conducting cylinder structure of the present invention.

[0032] Figure 10 This is a schematic diagram of the inlet and outlet pipes of the present invention.

[0033] Figure 11 This is a schematic diagram of the fixed cylinder structure of the present invention.

[0034] Figure 12 This is a schematic diagram of the external heat sink structure of the present invention.

[0035] Figure 13 This is a schematic diagram of the internal heat sink structure of the present invention.

[0036] Figure 14 This is a schematic diagram of the transmission gear and driven gear structure of the present invention.

[0037] Figure 15 This is a schematic diagram of the lifting rod structure of the present invention.

[0038] In the diagram: 1. Support platform; 2. High-frequency control box; 3. Spot welding equipment; 4. Electric slide rail assembly; 5. Workbench; 6. Support column; 7. Guide slide rod; 8. Moving frame; 9. Clamping rod; 10. Slide rail; 11. Support frame; 12. Lifting frame; 13. Pressure rod; 131. Rotating ring; 132. Push block; 133. Stand; 134. Spring; 14. Cylinder; 15. Slip ring; 16. Transmission rod; 17. Heat sink cover; 18. Fan; 19. Fixed cylinder; 191. Heat dissipation port; 20. Heat conduction cylinder; 201. External heat sink; 202. Internal heat sink; 203. Driven gear; 21. Cooling pipe; 22. Water inlet pipe; 23. Water outlet pipe; 24. Transmission gear; 25. Fixed rod; 26. Lifting rod; 27. Rack; 28. Crossbar; 29. ​​Transmission bracket. Detailed Implementation

[0039] The technical solutions of 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 of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1: Please refer to Figures 1-4 The present invention provides the following technical solution: a clamping and stabilizing high-frequency inverter spot welding machine, comprising a support platform 1 and a high-frequency control box 2 fixed on the support platform 1, a spot welding device 3 for processing steel pipes is installed on the high-frequency control box 2, an electric slide rail assembly 4 is fixedly installed on the support platform 1, and a worktable 5 is installed on the sliding end of the electric slide rail assembly 4; a support column 6 is longitudinally fixed on the worktable 5, a guide slide rod 7 is vertically fixed on the support column 6, a movable frame 8 is slidably sleeved on the guide slide rod 7, a clamping rod 9 for limiting the processing position of the steel pipe is fixedly installed on the movable frame 8, a slide rail 10 is opened on the worktable 5, and the movable frame 8 is slidably connected inside the slide rail 10; a limiting mechanism is also provided on the worktable 5 to further reinforce and adjust the spot welding processing position and welding distance of the two sets of steel pipes.

[0041] Please see Figures 2-7 The limiting mechanism includes a guide slide rod 7 and a support frame 11 fixedly mounted on the worktable 5. A lifting frame 12 is longitudinally slidably connected to the support frame 11, and a pressure rod 13 is fixedly mounted on the lifting frame 12. Two sets of pressure rods 13 are symmetrically arranged about the moving frame 8, and the pressure rods 13 move downwards and press against the upper end face of the steel pipe. A cylinder 14 is fixedly mounted on the worktable 5, and a slip ring 15 is fixedly connected to the output end of the cylinder 14. The slip ring 15 is slidably sleeved on the outside of the support column 6. A transmission rod 16 is rotatably connected to the slip ring 15, and the transmission rod 16 is rotatably connected to the moving frame 8. The slip ring 15 is fixedly connected to the lifting frame 12. A rotating ring 131 is rotatably sleeved on the pressure rod 13, and a push block 132 is obliquely connected to the rotating ring 131. A vertical frame 133 is vertically fixed to the upper end face of the pressure rod 13, and a spring piece 134 is elastically connected between the vertical frame 133 and the push block 132.

[0042] Two steel pipes are placed on the workbench 5, with their ends joined together, below the spot welding equipment 3. The cylinder 14 controls the slip ring 15 to move downwards. The transmission rod 16 connected between the slip ring 15 and the moving frame 8 rotates at both ends. The rotating transmission rod 16 pushes the moving frame 8 to slide on the guide slide rod 7. The moving frame 8 moves laterally along the opening direction of the slide rail 10. The moving frame 8 drives the clamping rod 9 to move closer to the steel pipe. The clamping rod 9 clamps and limits the steel pipe to the outer wall, initially limiting the two steel pipes below the spot welding equipment 3, ensuring stable spot welding processing.

[0043] During the process of the operating cylinder 14 controlling the slip ring 15 to move downward, the slip ring 15 is fixedly connected to the lifting frame 12, which drives the lifting frame 12 to move downward through the support frame 11. The lifting frame 12 drives the pressure rod 13 to move downward synchronously, so that the pressure rod 13 presses against the upper end face of the steel pipe. The two pressure rods 13 are pressed and limited on the surface of the steel pipe on both sides, further maintaining the stability of the steel pipe welding process.

[0044] When the pressure rod 13 is pressed against the surface of the steel pipe, the push block 132 on the side of the pressure rod 13 first contacts the surface of the steel pipe. Under the reverse thrust of the push block 132 in contact with the steel pipe, it compresses the spring piece 134 connected on the side. The push block 132 drives the rotating ring 131 to rotate on the pressure rod 13. When the push block 132 compresses the spring piece 134 to a certain extent, the push force of the push block 132 on the contact of the steel pipe increases, which can push the two steel pipes closer together, shorten the welding distance between the two steel pipes, and prepare for the subsequent high-precision spot welding of the steel pipe. Finally, the push block 132 rotates to a near-horizontal state. At this time, the pressure rod 13 is pressed against the end face of the steel pipe, and the clamping rod 9 also moves and presses against the joint of the two steel pipes.

[0045] The above steps can stably clamp and confine the steel pipe on the workbench 5. Then, the spot welding equipment 3 is operated to perform spot welding on the joint of the two steel pipes. During the spot welding process, the electric slide rail assembly 4 is operated to control the intermittent movement of the workbench 5. The workbench 5 drives the steel pipe to move gradually to cooperate with the spot welding equipment 3 to complete the spot welding process.

[0046] Example 2: Please refer to Figures 8-12 Based on Embodiment 1, a heat-absorbing component is also disclosed, the specific structure of which is as follows: A heat sink 17 is fixedly installed on the high-frequency control box 2, and a fan 18 is installed in the heat sink 17; multiple sets of heat-absorbing components are equally spaced and fitted on the high-frequency control box 2, and the multiple sets of heat-absorbing components are correspondingly arranged next to the fan 18. The heat-absorbing component includes a fixed cylinder 19 fitted in the high-frequency control box 2, and a heat-conducting cylinder 20 is rotatably installed on the fixed cylinder 19; the interior of the fixed cylinder 19 is connected to the interior of the heat-conducting cylinder 20, and a heat dissipation port 191 is opened on the side of the fixed cylinder 19 near the fan 18. The exterior of the heat-conducting cylinder 20 is symmetrically provided with outer heat dissipation fins 201 about the central axis, and the interior of the heat-conducting cylinder 20 is symmetrically provided with inner heat dissipation fins 202 about the central axis. A cooling pipe 21 is connected through the heat-conducting cylinder 20 along the axial direction, and an inlet pipe 22 and an outlet pipe 23 are respectively connected through the two ends of the cooling pipe 21, and the inlet pipe 22 and the outlet pipe 23 are fixedly connected to the heat sink 17.

[0047] Please see Figures 8-15A driven gear 203 is fixedly installed on the heat-conducting cylinder 20 along its axial direction. A transmission gear 24 is meshed with the driven gear 203 and rotatably connected to the heat sink 17. A fixed rod 25 is longitudinally fixed to the inner wall of the heat sink 17. A lifting rod 26 is slidably sleeved on the fixed rod 25. Multiple racks 27 are fixed at equal intervals on the lifting rod 26 and mesh with the transmission gear 24. A crossbar 28 is vertically fixed on the lifting rod 26. A transmission bracket 29 is slidably sleeved on the crossbar 28 and fixedly connected to the lifting frame 12.

[0048] During spot welding, multiple components inside the high-frequency control box 2 generate a large amount of heat. This heat is absorbed by the heat-conducting cylinder 20 and the outer heat sink 201 located inside the high-frequency control box 2. The heat absorbed by the outer heat sink 201 is transferred to the inner heat sink 202. The interior of the heat-conducting cylinder 20 is connected to the interior of the fixed cylinder 19. The heat on the inner heat sink 202 is transferred to the fixed cylinder 19 through the heat-conducting cylinder 20 and finally discharged to the outside through the heat dissipation port 191. Combined with the externally operating fan 18, the heat on the heat sink can be discharged to the outside, thereby achieving the purpose of temperature control inside the high-frequency control box 2.

[0049] A cooling pipe 21 is installed inside the heat-conducting cylinder 20. The two ends of the cooling pipe 21 are connected to an inlet pipe 22 and an outlet pipe 23. Combined with the pump body, the circulation of coolant is controlled by the inlet pipe 22 and the outlet pipe 23 (the coolant discharged through the outlet pipe 23 is cooled and then transported back to the inlet pipe 22). The coolant enters the cooling pipe 21, and the cooling pipe 21 reduces the heat inside the heat-conducting cylinder 20 through heat exchange, so that the heat-conducting cylinder 20 can continuously absorb and dissipate the heat inside the high-frequency control box 2, and the spot welding equipment 3 can continuously and stably complete the welding process.

[0050] During the welding of two steel pipes, it is necessary to limit and loosen the processing position of the steel pipes, that is, to control the slip ring 15 to move back and forth once. During the lifting and lowering movement, the slip ring 15 can drive the lifting frame 12 to move back and forth longitudinally once synchronously. During the longitudinal movement of the lifting frame 12, it drives the transmission bracket 29 and the crossbar 28 to move longitudinally. The crossbar 28 controls the lifting rod 26 to slide outside the fixed rod 25. The rack 27 fixed on the surface of the lifting rod 26 moves longitudinally. Through the meshing transmission of the rack 27, the transmission gear 24 and the driven gear 203, it can drive the heat conduction cylinder 20 connected to the fixed cylinder 19 to rotate. The fixed cylinder 19 rotates back and forth once, which can switch the corresponding positions of the two sets of inner heat sinks 202 and outer heat sinks 201 on its surface. The arrangement ensures that after a set of external heat sinks 201 and internal heat sinks 202 rotate into the interior of the high-frequency control box 2, they rotate again to move out of the exterior of the high-frequency control box 2. The external heat sinks 201, which enter the interior of the high-frequency control box 2, fully absorb the heat inside the box. Some of the heat is discharged to the outside through the heat conduction cylinder 20, the fixed cylinder 19, and the heat dissipation port 191. Some of the heat is absorbed through the heat exchange of the cooling pipe 21. Most of the heat is blown outward with the assistance of the fan 18 when the external heat sinks 201 rotate to the side of the fan 18. Under dynamic adjustment, the heat inside the high-frequency control box 2 can be quickly absorbed and discharged, ensuring that the internal heat of the high-frequency control box 2 can be handled in a timely manner during spot welding, and ensuring that spot welding can proceed normally.

[0051] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 clamping and stabilizing high-frequency inverter spot welding machine, comprising a support platform (1) and a high-frequency control box (2) fixed on the support platform (1), wherein a spot welding device (3) for processing steel pipes is installed on the high-frequency control box (2), characterized in that: An electric slide rail assembly (4) is fixedly installed on the support platform (1), and a worktable (5) is installed on the sliding end of the electric slide rail assembly (4). The workbench (5) is longitudinally fixed with a support column (6), and a guide slide rod (7) is vertically fixed on the support column (6). A movable frame (8) is slidably sleeved on the guide slide rod (7). A clamp rod (9) that limits the processing position of the steel pipe is fixedly installed on the movable frame (8). A slide rail (10) is opened on the workbench (5), and the movable frame (8) is slidably connected inside the slide rail (10). The workbench (5) is also equipped with a limiting mechanism to further reinforce and adjust the spot welding positions and welding distances of the two sets of steel pipes.

2. The clamping-stabilized high-frequency inverter spot welding machine according to claim 1, characterized in that: The limiting mechanism includes a guide slide rod (7) and a support frame (11) fixedly installed on the worktable (5). A lifting frame (12) is longitudinally slidably connected to the support frame (11), and a pressure rod (13) is fixedly installed on the lifting frame (12). Two sets of pressure rods (13) are symmetrically arranged about the moving frame (8), and the pressure rods (13) move down and press against the upper end face of the steel pipe.

3. The clamping-stabilized high-frequency inverter spot welding machine according to claim 2, characterized in that: A cylinder (14) is fixedly installed on the workbench (5), and a slip ring (15) is fixedly connected to the output end of the cylinder (14). The slip ring (15) is slidably sleeved on the outside of the support column (6). A transmission rod (16) is rotatably connected to the slip ring (15), and the transmission rod (16) is rotatably connected to the moving frame (8); The slip ring (15) is fixedly connected to the lifting frame (12).

4. The clamping-stabilized high-frequency inverter spot welding machine according to claim 2, characterized in that: A rotating ring (131) is rotatably sleeved on the pressure rod (13), and a push block (132) is inclinedly connected to the rotating ring (131). A vertical support (133) is fixed to the upper end of the pressure rod (13), and a spring piece (134) is elastically connected between the support (133) and the push block (132).

5. The clamping-stabilized high-frequency inverter spot welding machine according to claim 1, characterized in that: A heat sink (17) is fixedly installed on the high-frequency control box (2), and a fan (18) is installed in the heat sink (17). Multiple sets of heat-absorbing components are installed at equal intervals on the high-frequency control box (2), and the multiple sets of heat-absorbing components are correspondingly set next to the fan (18).

6. A clamping-stabilized high-frequency inverter spot welding machine according to claim 5, characterized in that: The heat absorption assembly includes a fixed cylinder (19) fitted into the high-frequency control box (2), and a heat-conducting cylinder (20) is rotatably mounted on the fixed cylinder (19). The interior of the fixed cylinder (19) is connected to the interior of the heat-conducting cylinder (20), and a heat dissipation port (191) is provided on the side of the fixed cylinder (19) near the fan (18).

7. A clamping-stabilized high-frequency inverter spot welding machine according to claim 6, characterized in that: The heat-conducting cylinder (20) has an outer heat sink (201) symmetrically arranged about the central axis on the outside, and an inner heat sink (202) symmetrically arranged about the central axis on the inside.

8. A clamping-stabilized high-frequency inverter spot welding machine according to claim 7, characterized in that: A cooling pipe (21) is connected through the heat-conducting cylinder (20) along the axial direction. A water inlet pipe (22) and a water outlet pipe (23) are respectively connected through the two ends of the cooling pipe (21). The water inlet pipe (22) and the water outlet pipe (23) are fixedly connected to the heat dissipation cover (17).

9. A clamping-stabilized high-frequency inverter spot welding machine according to claim 7, characterized in that: A driven gear (203) is fixedly installed on the heat-conducting cylinder (20) along the axial direction. A transmission gear (24) is meshed with the driven gear (203) and is rotatably connected to the heat sink (17). A fixed rod (25) is longitudinally fixed to the inner wall of the heat sink (17). A lifting rod (26) is slidably sleeved on the fixed rod (25). Multiple racks (27) are fixed at equal intervals on the lifting rod (26). The racks (27) mesh with the transmission gear (24).

10. A clamping-stabilized high-frequency inverter spot welding machine according to claim 9, characterized in that: A horizontal bar (28) is vertically fixed on the lifting rod (26), and a transmission bracket (29) is slidably mounted on the horizontal bar (28). The transmission bracket (29) is fixedly connected to the lifting frame (12).

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