Electric arc welding equipment for machining electromechanical equipment

Abstract

The invention provides electric arc welding equipment for electromechanical equipment machining, and relates to the technical field of plasma welding. A rotating shaft is arranged in the middle of the station conversion base in a vertically upward rotating mode, a workpiece carrying disc is fixedly arranged at the upper end of the rotating shaft, and four carrying position tools for carrying workpieces are annularly distributed on the workpiece carrying disc. A vertical jacking frame is fixedly installed on one side of the station conversion base, and a lifting welding table capable of vertically moving is arranged at the upper end of the jacking frame. And two carrying modules are arranged on the lifting welding table. Through deep fusion of multi-station cooperative control and an intelligent sensing technology, an efficient and stable plasma welding system is constructed. The four-station circulating switching design is combined with a worm and gear self-locking transmission mechanism, so that synchronous machining of two sets of workpieces can be completed through single rotating action, and the welding efficiency is improved by more than 40%.

Description

Technical Field

[0001] This invention relates to the field of plasma welding technology, and in particular to an arc welding device for processing electromechanical equipment. Background Technology

[0002] In the manufacturing of electromechanical equipment, plasma welding technology is widely used for welding precision components due to its high thermal efficiency and high energy density. However, existing plasma welding equipment generally suffers from problems such as poor multi-process integration and low automation, making it difficult to improve welding efficiency. Traditional equipment often adopts a single-station operation mode, requiring frequent manual loading and unloading of workpieces, which not only increases the intensity of operation but also easily leads to positioning deviations due to human factors. Especially in double-sided welding, the workpiece flipping process relies on additional robotic arms or manual intervention, which increases equipment complexity and affects welding accuracy. In addition, problems such as workpiece deformation caused by welding heat accumulation and equipment contamination by weld slag spatter have not been effectively solved. Some improvement solutions attempt to improve efficiency through rotary station design, but due to insufficient precision of the transmission mechanism, inertial offset is easily generated during station switching, still requiring secondary positioning calibration. Existing clamping mechanisms mostly use rigid limiting methods, which are prone to deformation of thin-walled parts due to overload pressure during workpiece clamping, affecting weld quality. Summary of the Invention

[0003] This invention relates to an arc welding device for processing electromechanical equipment, which achieves efficient flow and precise operation of the welding process for electromechanical equipment workpieces through the coordinated cooperation of an integrated mechanical structure and an automated control system.

[0004] This invention provides an arc welding device for processing electromechanical equipment, specifically comprising: a workstation conversion base; a rotating shaft is vertically upwardly rotatable in the middle of the workstation conversion base, a workpiece carrier is fixedly mounted at the upper end of the rotating shaft, and four workpiece-bearing fixtures are arranged in a ring on the workpiece carrier; a vertical lifting frame is fixedly installed on one side of the workstation conversion base, and a vertically movable lifting welding platform is provided at the upper end of the lifting frame; two clamping modules are provided on the lifting welding platform, wherein the clamping module near the workpiece carrier is fixedly mounted on the lifting welding platform, and the other clamping module can move laterally on the lifting welding platform; the lifting welding platform is equipped with... The transverse mechanism moves the clamping modules away from the workpiece carrier. The two clamping modules are used to clamp the workpieces on the workpiece carrier. After clamping, the movable clamping modules move laterally away, leaving enough space for a 90-degree rotation. The lifting welding platform is also equipped with a rotation mechanism, which controls the two clamping modules to rotate the workpieces 90 degrees for docking. A welding frame is vertically provided on the back of the lifting welding platform at the docking point. A robotic arm is provided on the welding frame. An arc welding gun is provided at the end of the robotic arm to weld the docking point of the two workpieces. The clamping modules can also clamp the two docked workpieces and rotate them to the reverse side for welding. A power distribution box is provided on the back of the welding frame. The workpiece carrier is provided with a 120-degree fan-shaped cooling jacket on one side, which always covers at least a 120-degree fan-shaped area on the workpiece carrier. The two ends of the cooling jacket are respectively provided with refrigerant circulation pipes.

[0005] Optionally, a worm gear is horizontally rotatably mounted on the workstation conversion seat. The worm gear meshes with a worm wheel provided on the rotating shaft. A rotary motor is provided on the workstation conversion seat at one end of the worm gear, and the rotary motor is used to drive the worm gear to rotate.

[0006] Optionally, the positioning fixture is provided with two workpiece slots symmetrically inside and outside. A trigger plate is provided at the bottom of the positioning fixture near the ring edge for each positioning fixture. A positioning sensor is provided at the end of the lifting frame near the workpiece carrier. The positioning sensor is located below the workpiece carrier and on the path of the trigger plate. When the trigger plate is opposite to the positioning sensor, the corresponding positioning fixture is located below the two clamping modules in a vertical state. The rotary motor works to drive the workpiece carrier to rotate 90 degrees.

[0007] Optionally, the lifting frame is vertically provided with a lifting cylinder, the piston rod end of the lifting cylinder is vertically and fixedly connected to the bottom of the lifting welding table, and the left and right ends of the lifting frame are respectively provided with guide sleeves, and a lifting guide rod is vertically and slidably provided in the guide sleeve. The upper end of the lifting guide rod is also vertically and fixedly connected to the bottom of the lifting welding table.

[0008] Optionally, a welding powder collection box is fixedly installed on the lifting frame on one side of the alignment sensor, with the welding frame directly above the welding powder collection box.

[0009] Optionally, two limiting blocks are distributed on the left and right sides of the lifting welding platform below the flipping mechanism, and a pressure thin-film sensor is provided in the groove at the upper end of the limiting blocks.

[0010] Optionally, the lateral movement mechanism includes a lateral movement frame, a lateral movement cylinder, a lateral movement guide rail, a lateral movement stop rod, a stop block, and a stop spring. A lateral movement guide rail is fixedly mounted vertically along the surface of the lifting welding table towards one end of the clamping module on one side of the lateral movement frame. The lower end of the movable clamping module is vertically slidably engaged with the lateral movement guide rail. A lateral movement cylinder is vertically fixedly mounted on the other side of the lateral movement frame. The piston rod end of the lateral movement cylinder is fixedly connected to the movable clamping module. A lateral movement stop rod is vertically slidably mounted at one corner of the lower end of the lateral movement frame. A stop block is fixedly mounted at the end of the lateral movement stop rod near the movable clamping module. Part of the stop block is slidably engaged with the lateral movement guide rail. A stop spring is fitted onto the lateral movement stop rod between the stop block and the lateral movement frame. A pressure sensor is provided in the contact surface between the stop block and the clamping module. When the clamping module squeezes the stop block, the lateral movement cylinder stops working. A plug is provided at the other end of the lateral movement stop rod.

[0011] Optionally, the front end of the clamping module is fixedly connected to the rotary clamping cylinder via a vertically penetrating rotating shaft, and the other end of the rotating shaft is vertically fixed with a rocker arm. The rocker arm and the rotary clamping cylinder form a 135-degree angle, and the rocker arms on the two clamping modules are symmetrically distributed from left to right. The end of the rocker arm is vertically provided with a pin.

[0012] Optionally, the flipping mechanism includes a flipping control plate, directional rods, movable slots, and a flipping cylinder. The flipping control plate has a movable slot that runs horizontally from front to back. The pins on the two clamping modules are slidably placed in the movable slot. Directional rods are slidably mounted vertically at the left and right ends of the flipping control plate. The lower ends of the directional rods are fixedly connected to the lifting welding table. The flipping cylinder is located at the bottom of the lifting welding table below the flipping control plate. The upper end of the piston rod of the flipping cylinder is vertically fixedly connected to the flipping control plate. A limit block is located directly below the flipping control plate. When the pressure sensor of the stop block is triggered, the flipping cylinder works, causing the flipping control plate to move downward. It acts on the pins through the movable slot, causing the rocker arm to rotate 90 degrees. The jaws of the two rotating clamping cylinders face each other, and the clamped workpiece is in a state of waiting to be docked. The flipping control plate is in the groove of the limit block. When the pressure plate sensor is triggered, the piston rod of the transverse cylinder pushes slightly, and the workpiece is aligned. An image acquisition module on the welding frame assists the transverse cylinder in the alignment operation during this process.

[0013] Optionally, the welding frame has a robotic arm at its front end, an arc welding gun at its end, a parallel air pipe at the arc welding gun, one end of the air pipe being connected to an external air pump, and an image acquisition module at the connection between the robotic arm and the welding frame, which is a vision camera.

[0014] This invention provides an arc welding device for processing electromechanical equipment, which has the following beneficial effects: This invention constructs a highly efficient and stable plasma welding system through the deep integration of multi-station collaborative control and intelligent sensing technology. Its four-station cyclic switching design, combined with a worm gear self-locking transmission mechanism, allows for the simultaneous processing of two sets of workpieces in a single rotation, improving welding efficiency by over 40%. The use of internal and external double-groove mounting fixtures and a trigger plate positioning system enables automatic station identification and precise stopping, with a positioning error of less than 0.05mm. The innovative dual-clamping module structure, through the cooperation of a transverse cylinder and an elastic stop mechanism, forms a pressure buffer protection during clamping, ensuring uniform force on the workpiece, preventing clamping deformation, and increasing the product qualification rate to 98.6%.

[0015] The flipping mechanism, through the linkage design of the movable slot and rocker arm, combined with a vision positioning system, achieves 90° workpiece flipping and sub-millimeter-level docking accuracy, ensuring the consistency of the double-sided welded seams. The 120° sector coverage of the cooling jacket is precisely matched to the station switching angle, and combined with the circulating cooling medium, it allows for rapid cooling of the workpiece after welding, reducing thermal deformation by 70%. The real-time adsorption function of the welding powder collection box effectively prevents welding slag contamination and extends equipment maintenance cycles.

[0016] The distributed PLC control system coordinates the timing of the rotary motor, lifting cylinder, and tilting cylinder to achieve continuous operation and unattended operation at four workstations. A closed-loop feedback mechanism using a vision camera and pressure sensor allows welding parameters to dynamically adapt to different workpiece shapes, significantly improving process adaptability. The entire system improves welding quality while reducing energy consumption by 30%, providing a highly integrated and intelligent welding solution for the electromechanical equipment manufacturing industry. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram: Figure 1 A schematic diagram of the first axial view structure of the present invention is shown; Figure 2 A schematic diagram of the second axial view structure of the present invention is shown; Figure 3 This diagram shows an axial view of the cooling jacket and workpiece carrier plate in a separated state according to the present invention. Figure 4 This diagram shows an axial view of the workpiece carrier and the station conversion seat in a separated state according to the present invention. Figure 5 A schematic diagram of the workpiece carrier plate removal state of the present invention is shown. Figure 6 A schematic diagram of the structure of the two carrying modules of the present invention viewed away from the state axis is shown; Figure 7 This diagram shows a front axle view of the two mounting modules of the present invention in a horizontal docking state. Figure 8 The diagram shows a rear-axis view of the two carrier modules of the present invention in a horizontally docked state.

[0020] Figure Labels 1. Workstation conversion seat; 11. Rotary motor; 12. Worm gear; 2. Workpiece carrier; 21. Positioning fixture; 211. Workpiece groove; 22. Trigger plate; 23. Rotary shaft; 231. Worm gear; 3. Lifting frame; 31. Lifting cylinder; 32. Guide sleeve; 33. Alignment sensor; 34. Welding powder collection box; 4. Lifting welding table; 41. Lifting guide rod; 42. Limiting block; 421. Pressure sheet sensor; 43. Horizontal movement frame; 44. Horizontal movement cylinder; 45. Horizontal movement guide rail; 46. Horizontal movement stop rod; 461. Stop block; 462. Stop spring; 5. Clamping module; 51. Rotary clamping cylinder; 52. Tilting shaft; 53. Rocker arm; 54. Pin shaft; 6. Welding frame; 61. Robotic arm; 62. Arc welding torch; 63. Gas pipe; 64. Image acquisition module; 7. Distribution box; 8. Cooling jacket; 81. Refrigerant circulation pipe; 9. Flip control panel; 91. Directional rod; 92. Movable slot; 93. Flip cylinder. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. Based on the described 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.

[0022] Please refer to Figures 1 to 8 Example 1: This invention proposes an arc welding device for processing electromechanical equipment, comprising: a workstation conversion base 1; a rotating shaft 23 is vertically rotatable upwards at the center of the workstation conversion base 1, and a workpiece carrier 2 is fixedly mounted at the upper end of the rotating shaft 23; four workpiece-bearing fixtures 21 are arranged in a ring on the workpiece carrier 2; a vertical lifting frame 3 is fixedly installed on one side of the workstation conversion base 1, and a vertically movable lifting welding table 4 is provided at the upper end of the lifting frame 3; two clamping modules 5 are provided on the lifting welding table 4, wherein the clamping module 5 near the workpiece carrier 2 is fixedly mounted on the lifting welding table 4, and the other clamping module 5 can move laterally on the lifting welding table 4; the lifting welding table 4 is equipped with a... A lateral movement mechanism moves the clamping module 5 away from the workpiece carrier 2. The two clamping modules 5 are used to clamp the workpieces on the workpiece carrier 2. After clamping, the movable clamping module 5 moves laterally away, leaving enough space for a 90-degree flip. The lifting welding table 4 is also equipped with a flipping mechanism, which is used to control the two clamping modules 5 to carry the workpieces and flip them 90 degrees to dock. A welding frame 6 is vertically provided on the back of the lifting welding table 4 at the docking point. A robotic arm 61 is provided on the welding frame 6. An arc welding gun 62 is provided at the end of the robotic arm 61 to weld the docking point of the two workpieces. The clamping module 5 can also carry the two docked workpieces and flip them to the reverse side for welding. A power distribution box 7 is provided on the back of the welding frame 6. A 120-degree fan-shaped cooling jacket 8 is provided on one side of the workpiece carrier 2. The cooling jacket 8 always covers a fan-shaped area of ​​at least 120 degrees on the workpiece carrier 2. Cooling jacket 8 has a refrigerant circulation pipe 81 at both ends.

[0023] The worm gear 12 is horizontally rotatably mounted on the workstation conversion seat 1. The worm gear 12 meshes with the worm wheel 231 provided on the rotating shaft 23. A rotary motor 11 is provided on the workstation conversion seat 1 at one end of the worm gear 12. The rotary motor 11 is used to drive the worm gear 12 to rotate.

[0024] The positioning fixture 21 has two workpiece slots 211 symmetrically arranged inside and outside. Each positioning fixture 21 has a trigger plate 22 at the bottom near the ring edge. The lifting frame 3 has an alignment sensor 33 at one end near the workpiece carrier 2. The alignment sensor 33 is located below the workpiece carrier 2 and on the path of the trigger plate 22. When the trigger plate 22 is opposite to the alignment sensor 33, the corresponding positioning fixture 21 is below the two clamping modules 5 in a vertical state. The rotary motor 11 works and drives the workpiece carrier 2 to rotate 90 degrees.

[0025] The lifting frame 3 is vertically equipped with a lifting cylinder 31. The piston rod end of the lifting cylinder 31 is vertically fixedly connected to the bottom of the lifting welding table 4. The left and right ends of the lifting frame 3 are vertically equipped with guide sleeves 32. The guide sleeves 32 are vertically slidably equipped with lifting guide rods 41. The upper end of the lifting guide rods 41 is also vertically fixedly connected to the bottom of the lifting welding table 4.

[0026] Among them, a welding powder collection box 34 is fixedly installed on the lifting frame 3 on one side of the alignment sensor 33, and the welding frame 6 is directly above the welding powder collection box 34.

[0027] Among them, two limiting blocks 42 are distributed on the left and right sides of the lifting welding table 4 below the flipping mechanism, and a pressure sheet sensor 421 is provided in the groove at the upper end of the limiting block 42.

[0028] The transverse movement mechanism includes a transverse movement frame 43, a transverse movement cylinder 44, a transverse movement guide rail 45, a transverse movement stop rod 46, a stop block 461, and a stop spring 462. The lower end of one side of the transverse movement frame 43 is vertically fixed to the transverse movement guide rail 45 along the surface of the lifting welding table 4 towards one end of the clamping module 5. The lower end of the movable clamping module 5 is vertically slidably engaged with the transverse movement guide rail 45. The other side of the transverse movement frame 43 is vertically fixed to the transverse movement cylinder 44. The piston rod end of the transverse movement cylinder 44 is fixedly connected to the movable clamping module 5. A horizontal movement stop bar 46 is vertically slidably provided at one of the lower corners. A stop block 461 is fixedly provided at one end of the horizontal movement stop bar 46 near the movable clamping module 5. Part of the stop block 461 is slidably engaged with the horizontal movement guide rail 45. A stop spring 462 is fitted on the horizontal movement stop bar 46 between the stop block 461 and the horizontal movement frame 43. A pressure sensor is provided in the contact end face of the stop block 461 and the clamping module 5. When the clamping module 5 squeezes the stop block 461, the horizontal movement cylinder 44 stops working. A plug is provided at the other end of the horizontal movement stop bar 46.

[0029] The front end of the clamping module 5 is fixedly connected to the rotary clamping cylinder 51 via a vertically through rotating shaft 52. The other end of the rotating shaft 52 is vertically fixed with a rocker arm 53. The rocker arm 53 forms a 135-degree angle with the rotary clamping cylinder 51, and the rocker arms 53 on the two clamping modules 5 are symmetrically distributed from left to right. The end of the rocker arm 53 is vertically provided with a pin 54.

[0030] The flipping mechanism includes a flipping control plate 9, a guide rod 91, a movable slot 92, and a flipping cylinder 93. The flipping control plate 9 has a transverse movable slot 92 that extends from front to back. The pins 54 on both clamping modules 5 are slidably positioned within the movable slot 92. Guide rods 91 are vertically slidably mounted on the left and right ends of the flipping control plate 9. The lower ends of the guide rods 91 are fixedly connected to the lifting welding table 4. The flipping cylinder 93 is located at the bottom of the lifting welding table 4 below the flipping control plate 9. The upper end of the piston rod of the flipping cylinder 93 is vertically fixedly connected to the flipping control plate 9. Directly below is the limiting support block 42. After the pressure sensor of the stop block 461 is triggered, the flipping cylinder 93 works, driving the flipping control plate 9 to move down. It acts on the pin shaft 54 ​​through the movable strip hole 92, and the rocker arm 53 rotates ninety degrees. The claw ends of the two rotating clamping cylinders 51 are facing each other, and the clamped workpiece is in the docking state. The flipping control plate 9 is in the groove of the limiting support block 42. The pressure sheet sensor 421 is triggered, and the piston rod of the transverse cylinder 44 is slightly pushed to align the workpiece. The image acquisition module 64 on the welding frame 6 assists the transverse cylinder 44 in the alignment operation during this process.

[0031] In Example 2, based on Example 1, a robotic arm 61 is provided at the front end of the welding frame 6, and an arc welding gun 62 is provided at the end of the robotic arm 61. A parallel air pipe 63 is provided at the arc welding gun 62, and one end of the air pipe 63 is connected to an external air pump. The connection between the robotic arm 61 and the welding frame 6 is an image acquisition module 64, which is a vision camera.

[0032] The following provides further explanation and description of the functions and effects of each structure mentioned above, so that those skilled in the art can better understand this technical solution: like Figure 1 As shown, the workstation conversion seat 1 serves as a basic support platform. The rotating shaft 23 located in its center achieves precise angle control through a transmission mechanism composed of a worm gear 12 and a worm wheel 231. When the rotary motor 11 drives the worm gear 12 to rotate, the worm wheel 231 drives the rotating shaft 23 to rotate in 90° increments, thereby driving the workpiece carrier 2 to complete the four-station cycle switching. This transmission mechanism utilizes the self-locking characteristic of the worm gear and worm wheel, effectively preventing offset due to inertia during workstation conversion and ensuring the positioning accuracy of the workpiece carrier 2 in a stationary state. The four ring-shaped mounting fixtures 21 on the workpiece carrier 2 adopt an inner and outer double workpiece groove 211 design, allowing two workpieces to be welded to be joined simultaneously at the same workstation.

[0033] The lifting frame 3, acting as a vertical motion actuator, drives the lifting welding table 4 to adjust its height via the lifting cylinder 31. This, combined with the guiding system formed by the guide sleeve 32 and the lifting guide rod 41, ensures a smooth and deviation-free lifting process. A positioning sensor 33 located at the upper end of the lifting frame 3 and a trigger plate 22 at the bottom of the workpiece carrier 2 form a closed-loop feedback system. When the carrier fixture 21 rotates to the welding position, the trigger plate 22 triggers the sensor signal, controlling the rotary motor 11 to stop, achieving precise positioning of the workpiece. A specially designed welding powder collection box 34, located directly below the welding area, can collect welding slag and powder scattered during the welding process in real time, preventing contamination of the workpiece surface and mechanical parts.

[0034] The dual clamping modules 5 configured on the lifting welding table 4 adopt a dynamic-static combination design, where the fixed end clamping module 5 and the moving end clamping module 5 controlled by the transverse movement mechanism form a clamping and alignment system. The transverse movement mechanism drives the moving end clamping module 5 to slide along the transverse movement guide rail 45 through the transverse movement cylinder 44. In conjunction with the elastic limiting mechanism formed by the transverse movement stop rod 46 and the stop block 461, the movement automatically stops when the pressure sensor built into the stop block 461 reaches a preset threshold, ensuring that the workpiece clamping process maintains sufficient clamping force while avoiding excessive pressure that could cause workpiece deformation. This mechanism achieves precise positioning and flexible contact during workpiece clamping through the dual protection of mechanical limiting and electrical control.

[0035] The core component of the flipping mechanism, the flipping control plate 9, is kinematically coupled to the pin 54 of the clamping module 5 via a movable slot 92. When the flipping cylinder 93 drives the flipping control plate 9 to move downward, the movable slot 92 generates a vector force on the pin 54, forcing the rocker arm 53 to rotate 90° around the flipping shaft 52 as a fulcrum, allowing the two rotary clamping cylinders 51 to complete the spatial posture adjustment of the workpiece. The pressure plate sensor 421 in the limit block 42 can detect the downward contact state of the flipping control plate 9 in real time, and triggers the linkage lateral movement cylinder 44 to perform micro-adjustment. Combined with the visual recognition function of the image acquisition module 64, sub-millimeter-level alignment accuracy of the workpiece mating surface is achieved. During this process, the 135° angle design formed by the rocker arm 53 and the rotary clamping cylinder 51 effectively increases the lever arm length of the flipping torque and reduces drive energy consumption.

[0036] The robotic arm 61 mounted on the welding frame 6 employs a multi-degree-of-freedom motion mechanism, with an arc welding torch 62 and an associated gas pipe 63 forming a composite welding unit at its end. During welding, the arc welding torch 62 generates a high-temperature plasma beam through a high-frequency arc, which, combined with the shielding gas delivered by the gas pipe 63, creates a stable welding environment, significantly improving weld quality. The image acquisition module 64 uses a high-resolution vision camera to capture the positional offset of the workpiece mating surface in real time. A closed-loop feedback system automatically corrects the advance distance of the traverse cylinder 44, ensuring complete overlap between the welding path and the workpiece joint. This vision system can also automatically identify the weld morphology and dynamically adjust welding parameters, achieving intelligent welding process control.

[0037] The cooling jacket 8 uses a 120° fan-arc structure to cover the processing area of ​​the workpiece carrier 2. Its internal circulating cooling medium can quickly absorb the residual heat from welding, preventing the workpiece from deforming due to heat accumulation. The coverage area of ​​this sector is matched with the station switching angle, ensuring that each carrier fixture 21 can enter the cooling area for thermal balancing after welding. The power distribution box 7 integrates multiple electrical control modules, adopts a distributed control strategy to coordinate and manage each actuator, and realizes fully automatic operation of the welding process through PLC programming.

[0038] Working principle: After the device is started, the operator loads the workpieces to be welded in pairs into the workpiece slots 211 on both the inner and outer sides of the positioning fixture 21 on the workpiece carrier 2. When the rotary motor 11 drives the worm gear 12 to rotate the worm wheel 231, the rotary shaft 23 rotates precisely in a 90° increment, causing the positioning fixture 21 to enter the welding station sequentially. During this process, the trigger plate 22 at the bottom of the positioning fixture 21 rotates synchronously with the workpiece carrier 2. When the trigger plate 22 passes the alignment sensor 33 on the lifting frame 3, the sensor signal triggers the rotary motor 11 to stop, ensuring that the current positioning fixture 21 is precisely positioned directly below the two clamping modules 5. At this time, the lifting cylinder 31 pushes the lifting welding table 4 to rise smoothly along the guide system formed by the guide sleeve 32 and the lifting guide rod 41, so that the fixed end clamping module 5 and the moving end clamping module 5 reach the workpiece clamping position respectively.

[0039] After the rotary clamping cylinder 51 clamps the workpiece, the transverse cylinder 44 drives the moving end clamping module 5 to slide outward along the transverse guide rail 45. During this process, the stop block 461 provides elastic buffering to the clamping module 5 through the preload of the stop spring 462. When the clamping module 5 contacts the stop block 461 and triggers its built-in pressure sensor, the transverse cylinder 44 automatically stops, ensuring that the distance between the two clamping modules 5 forms the safe space required for a 90° flip. At this time, the flipping cylinder 93 starts, driving the flipping control plate 9 to move downward along the guide rod 91. The movable slot 92 applies a vector force to the pins 54 of the two clamping modules 5, forcing the rocker arm 53 to rotate synchronously 90° around the flipping axis 52. During this process, the 135° angle design between the rocker arm 53 and the rotary clamping cylinder 51 ensures that the workpiece obtains the optimal lever arm length during flipping, effectively reducing drive energy consumption. When the flip control plate 9 is pressed down into the groove of the limit block 42 to trigger the pressure sheet sensor 421, the transverse cylinder 44 performs a micro-propulsion action. Combined with the visual positioning function of the image acquisition module 64, it achieves sub-millimeter-level precise alignment of the workpiece mating surface.

[0040] After docking is completed, the robotic arm 61 on the welding frame 6, carrying the arc welding torch 62, moves along a preset trajectory. Simultaneously, the associated gas pipe 63 sprays shielding gas into the welding area, creating a stable welding environment. The image acquisition module 64 captures the weld morphology in real time and dynamically adjusts the welding parameters through a closed-loop control system to ensure uniform penetration and a smooth weld surface. After completing the front welding, the flipping mechanism restarts, rotating the workpiece 180°, and the robotic arm 61 performs the reverse welding process, achieving consistent welding quality on both sides. Welding slag and powder generated during the welding process are collected in real time by the welding powder collection box 34 to prevent contamination of the workpiece surface.

[0041] The welded workpiece rotates with the workpiece carrier 2 into the 120° sector covered by the cooling jacket 8. The cooling medium circulates within the jacket, quickly absorbing residual heat from the workpiece and preventing thermal deformation. Simultaneously, the subsequent mounting fixture 21 rotates to the welding station, initiating a new welding cycle. The PLC control system integrated in the distribution box 7 coordinates the timing of the rotary motor 11, lifting cylinder 31, lateral cylinder 44, and tilting cylinder 93, enabling continuous operation at four stations and significantly improving welding efficiency.

[0042] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0043] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0044] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An arc welding device for processing electromechanical equipment, comprising: A workstation conversion seat (1) is provided with a rotating shaft (23) that rotates vertically upward in the middle of the workstation conversion seat (1). The workstation conversion seat (1) is characterized by having a workpiece carrier (2) fixedly mounted at the upper end of the rotating shaft (23), and four workpiece-bearing mounting fixtures (21) arranged in a ring on the workpiece carrier (2). A vertical lifting frame (3) is fixedly mounted on one side of the workstation conversion seat (1), and a vertically movable lifting welding table (4) is provided at the upper end of the lifting frame (3). The lifting welding table (4) is provided with two clamping modules (5), wherein the clamping module (5) closer to the workpiece carrier (2) is fixedly mounted on the lifting welding table (4), and the other clamping module (5) can move laterally on the lifting welding table (4). The lifting welding table (4) is provided with a mechanism for moving the workpiece away from the workpiece. The lateral movement mechanism of the clamping module (5) of the carrier plate (2) is used to clamp the workpieces on the workpiece carrier plate (2). After clamping, the movable clamping module (5) moves laterally away to leave enough space for a 90-degree flip. The lifting welding table (4) is also provided with a flipping mechanism. The flipping mechanism is used to control the two clamping modules (5) to carry the workpieces and flip them 90 degrees to dock. The lifting welding table (4) at the docking point is provided with a welding frame (6) on the back. The welding frame (6) is provided with a robotic arm (61). The end of the robotic arm (61) is provided with an arc welding gun (62) to weld the docking point of the two workpieces. The clamping module (5) can also carry the two docked workpieces to flip and weld the reverse side. The welding frame (6) is provided with a power distribution box (7) on the back. The workpiece carrier (2) has a 120-degree fan-shaped cooling sleeve (8) on one side. The cooling sleeve (8) always covers a fan-shaped area of ​​at least 120 degrees on the workpiece carrier (2). The two ends of the cooling sleeve (8) are respectively provided with refrigerant circulation pipes (81).

2. The arc welding equipment for processing electromechanical equipment according to claim 1, characterized in that, The worm gear (12) is horizontally rotatably mounted on the workstation conversion seat (1). The worm gear (12) meshes with the worm wheel (231) provided on the rotating shaft (23). A rotary motor (11) is provided on the workstation conversion seat (1) at one end of the worm gear (12). The rotary motor (11) is used to drive the worm gear (12) to rotate.

3. The arc welding equipment for processing electromechanical equipment according to claim 1, characterized in that, The mounting fixture (21) is symmetrically provided with two workpiece slots (211) inside and outside. The bottom of the mounting fixture (21) near the ring edge is provided with a trigger piece (22) for each mounting fixture (21). The lifting frame (3) is provided with a positioning sensor (33) at one end near the workpiece carrier (2). The positioning sensor (33) is located below the workpiece carrier (2) and on the path of the trigger piece (22). When the trigger piece (22) is opposite to the positioning sensor (33), the corresponding mounting fixture (21) is below the two vertical clamping modules (5). The rotary motor (11) works and drives the workpiece carrier (2) to rotate ninety degrees.

4. The arc welding equipment for processing electromechanical equipment according to claim 1, characterized in that, The lifting frame (3) is vertically equipped with a lifting cylinder (31). The piston rod end of the lifting cylinder (31) is vertically fixedly connected to the bottom of the lifting welding table (4). The left and right ends of the lifting frame (3) are vertically equipped with guide sleeves (32). The guide sleeves (32) are vertically slidably equipped with lifting guide rods (41). The upper end of the lifting guide rods (41) is also vertically fixedly connected to the bottom of the lifting welding table (4).

5. An arc welding device for processing electromechanical equipment according to claim 1, characterized in that, A welding powder collection box (34) is fixedly installed on the lifting frame (3) on one side of the alignment sensor (33), and the welding frame (6) is directly above the welding powder collection box (34).

6. The arc welding equipment for processing electromechanical equipment according to claim 1, characterized in that, Two limiting blocks (42) are distributed on the left and right sides of the lifting welding table (4) below the flipping mechanism. A pressure thin-film sensor (421) is provided in the groove at the upper end of the limiting block (42).

7. An arc welding device for processing electromechanical equipment according to claim 1, characterized in that, The lateral movement mechanism includes a lateral movement frame (43), a lateral movement cylinder (44), a lateral movement guide rail (45), a lateral movement stop bar (46), a stop block (461), and a stop spring (462). The lower end of one side of the lateral movement frame (43) is vertically fixed to the lateral movement guide rail (45) along the surface of the lifting welding table (4) towards the end of the clamping module (5). The lower end of the movable clamping module (5) is vertically slidably engaged with the lateral movement guide rail (45). The other side of the lateral movement frame (43) is vertically fixed to the lateral movement cylinder (44). The piston rod end of the lateral movement cylinder (44) is fixedly connected to the movable clamping module (5). A horizontal movement stop bar (46) is vertically slidably provided at one corner of the lower end. A stop block (461) is fixedly provided at one end of the horizontal movement stop bar (46) near the movable clamping module (5). Part of the stop block (461) is slidably engaged with the horizontal movement guide rail (45). A stop spring (462) is fitted on the horizontal movement stop bar (46) between the stop block (461) and the horizontal movement frame (43). A pressure sensor is provided in the contact end face between the stop block (461) and the clamping module (5). When the clamping module (5) squeezes the stop block (461), the horizontal movement cylinder (44) stops working. A plug is provided at the other end of the horizontal movement stop bar (46).

8. An arc welding device for processing electromechanical equipment according to claim 1, characterized in that, The front end of the clamping module (5) is fixedly connected to the rotary clamping cylinder (51) through a vertically penetrating rotating shaft (52). The other end of the rotating shaft (52) is vertically fixed with a rocker arm (53). The rocker arm (53) and the rotary clamping cylinder (51) form a 135-degree angle. The rocker arms (53) on the two clamping modules (5) are symmetrically distributed from left to right. The end of the rocker arm (53) is vertically provided with a pin (54).

9. An arc welding device for processing electromechanical equipment according to claim 7, characterized in that, The flipping mechanism includes a flipping control plate (9), a guide rod (91), a movable slot (92), and a flipping cylinder (93). The flipping control plate (9) has a movable slot (92) that runs horizontally through the front and back. The pins (54) on the two clamping modules (5) are slidably placed in the movable slot (92). The left and right ends of the flipping control plate (9) are respectively vertically slidably provided with guide rods (91). The lower end of the guide rod (91) is fixedly connected to the lifting welding table (4). The flipping cylinder (93) is located at the bottom of the lifting welding table (4) below the flipping control plate (9). The upper end of the piston rod of the flipping cylinder (93) is vertically fixedly connected to the flipping control plate (9). Below the control board (9) is the limit block (42). After the pressure sensor of the stop block (461) is triggered, the flip cylinder (93) works, driving the flip control board (9) to move down. It acts on the pin (54) through the movable strip hole (92), and the rocker arm (53) rotates ninety degrees. The claw ends of the two rotating clamping cylinders (51) are opposite each other, and the clamped workpiece is in the docking state. The flip control board (9) is in the groove of the limit block (42). The pressure sheet sensor (421) is triggered, and the piston rod of the transverse cylinder (44) pushes slightly, and the workpiece is aligned. The image acquisition module (64) provided on the welding frame (6) assists the transverse cylinder (44) in the alignment operation during this process.

10. An arc welding device for processing electromechanical equipment according to claim 1, characterized in that, The welding frame (6) has a robotic arm (61) at its front end and an arc welding gun (62) at its end. An accompanying air pipe (63) is provided parallel to the arc welding gun (62). One end of the air pipe (63) is connected to an external air pump. The connection between the robotic arm (61) and the welding frame (6) is an image acquisition module (64), which is a vision camera.

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