An electric arc welding apparatus for machining electromechanical devices

Abstract

The application provides an arc welding device for machining of electromechanical equipment, relates to the technical field of plasma welding, and comprises a work station conversion seat; a rotating shaft is vertically upwardly arranged in the middle of the work station conversion seat; a workpiece loading disc is fixedly arranged at the upper end of the rotating shaft; four loading positions for loading workpieces are annularly arranged on the workpiece loading disc; a vertical jacking frame is fixedly installed on one side of the work station conversion seat; a vertically movable lifting welding platform is arranged at the upper end of the jacking frame; and two clamping modules are arranged on the lifting welding platform. Through deep integration of multi-station cooperative control and intelligent sensing technology, the application constructs a high-efficiency and stable plasma welding system. The four-station cyclic switching design is combined with a worm and gear self-locking transmission mechanism, so that synchronous machining of two groups of workpieces can be completed through single rotation, and the welding efficiency is improved by more than 40%.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of plasma welding, and in particular to an arc welding device for machining of electromechanical equipment. BACKGROUND

[0002] In the manufacturing of electromechanical equipment, plasma welding technology is widely used in precision component welding due to its high thermal efficiency and high energy density. However, the existing plasma welding equipment generally has problems such as poor connection of multiple processes and low automation degree, which makes it difficult to improve the welding efficiency. Traditional equipment mostly adopts a single-station operation mode, which requires frequent manual loading and unloading of workpieces, not only increasing the operation strength, but also easily causing positioning deviation due to human factors. Especially in double-sided butt welding, the workpiece turning process relies on additional mechanical hands or manual intervention, which not only increases the complexity of the equipment, but also affects the welding precision. In addition, the problems such as workpiece deformation caused by welding heat accumulation and welding slag splashing to pollute the equipment have not been effectively solved. Some improvement schemes try to improve the efficiency through rotating station design, but due to the insufficient precision of the transmission mechanism, inertia deviation is easily generated during station switching, and secondary positioning calibration is still needed. The existing clamping mechanism mostly adopts rigid limiting mode, which easily causes thin-walled part deformation due to overload pressure during workpiece clamping, affecting the weld quality. SUMMARY

[0003] The application relates to an arc welding device for machining of electromechanical equipment, which realizes efficient flow and accurate operation of the welding process of electromechanical equipment workpieces through the cooperation of integrated mechanical structure and automatic control system.

[0004] The application provides an arc welding device for machining of electromechanical equipment, which specifically comprises: a station conversion seat; a rotating shaft is vertically upwardly arranged in the middle of the station conversion seat, the upper end of the rotating shaft is fixedly provided with a workpiece loading disc, and four loading positions for loading workpieces are annularly arranged on the workpiece loading disc; a vertical jacking frame is fixedly installed on one side of the station conversion seat, and a lifting welding table that can vertically move is arranged at the upper end of the jacking frame; two clamping modules are arranged on the lifting welding table, one of which is fixedly installed on the lifting welding table and the other of which can horizontally move on the lifting welding table; a horizontal moving mechanism is arranged on the lifting welding table and used for driving the clamping module away from the workpiece loading disc to move; the two clamping modules are respectively used for clamping workpieces on the workpiece loading disc; after clamping, the movable clamping module horizontally moves away to leave enough space for 90-degree turning; a turning mechanism is further arranged on the lifting welding table and used for controlling the two clamping modules to carry workpieces to turn 90 degrees to butt joint; a welding frame is vertically arranged at the back of the lifting welding table at the butt joint position; a mechanical arm is arranged on the welding frame; an arc welding gun is arranged at the tail end of the mechanical arm and used for welding the butt joint position of the two workpieces; the clamping module can also clamp the two butt-jointed workpieces to turn and back-weld; and a power distribution box is arranged at the back of the welding frame.

[0005] The workpiece carrier disc is provided with a 120-degree fan-shaped cooling jacket, which covers at least a 120-degree fan-shaped area of the workpiece carrier disc, and the two ends of the cooling jacket are respectively provided with refrigerant circulation pipes.

[0006] Optionally, a worm is horizontally rotatably installed on the station conversion seat, the worm is engaged with a worm gear provided on the rotating shaft, a rotary motor is provided on the station conversion seat at one end of the worm, and the rotary motor is used to drive the worm to rotate.

[0007] Optionally, two workpiece grooves are symmetrically provided inside and outside the carrier tool, a trigger piece is provided on the bottom of each carrier tool near the ring edge, a positioning sensor is provided on one end of the jacking frame near the workpiece carrier disc, the positioning sensor is below the workpiece carrier disc and located on the path of the trigger piece, when the trigger piece is opposite to the positioning sensor, the corresponding carrier tool is below the two clamping modules in the vertical state, and the rotary motor stops.

[0008] Optionally, a jacking cylinder is vertically provided in the jacking frame, the piston rod of the jacking cylinder is fixedly connected with the bottom of the lifting welding table, guide sleeves are vertically provided on the left and right ends of the jacking frame, lifting guide rods are vertically and slidably provided in the guide sleeves, and the upper ends of the lifting guide rods are also fixedly connected with the bottom of the lifting welding table.

[0009] Optionally, a welding powder collecting box is fixedly provided on the jacking frame near the positioning sensor, and the welding powder collecting box is opposite to the welding frame.

[0010] Optionally, two limiting blocks are distributed on the lifting welding table below the turnover mechanism, and a pressure sheet sensor is arranged in the upper end groove of the limiting block.

[0011] Optionally, the horizontal moving mechanism comprises a horizontal moving frame, a horizontal moving cylinder, a horizontal moving guide rail, a horizontal moving stop rod, a stop block and a stop spring, the horizontal moving guide rail is vertically and fixedly arranged on one side of the horizontal moving frame and at the lower end of the lifting welding table, the lower end of the movable clamping module is vertically and slidably connected with the horizontal moving guide rail, the horizontal moving cylinder is vertically and fixedly arranged on the other side of the horizontal moving frame, the piston rod of the horizontal moving cylinder is fixedly connected with the movable clamping module, the horizontal moving stop rod is vertically and slidably arranged at one corner of the lower end of the horizontal moving frame, the stop block is fixedly arranged on one end of the horizontal moving stop rod near the movable clamping module, the stop block is slidably connected with the horizontal moving guide rail, the stop spring is sleeved on the horizontal moving stop rod between the stop block and the horizontal moving frame, the pressure sensor is arranged in the end surface of the stop block in contact with the movable clamping module, the horizontal moving cylinder stops working when the movable clamping module presses the stop block, and the other end of the horizontal moving stop rod is provided with a plug.

[0012] Optionally, the front end of the carrying module is fixedly connected with a rotary clamping air cylinder through a vertical penetrating rotary connecting turnover shaft, the other end of the turnover shaft is vertically fixed with a rocker arm, the rocker arm and the rotary clamping air cylinder form an angle of 135 degrees, the rocker arms on the two carrying modules are symmetrically distributed left and right, and the tail end of the rocker arm is vertically provided with a pin shaft.

[0013] Optionally, the turnover mechanism comprises a turnover control plate, a directional rod, a movable strip hole and a turnover air cylinder, the movable strip hole penetrating front and back is horizontally arranged in the turnover control plate, the pin shafts on the two carrying modules are slidably arranged in the movable strip hole, the directional rods are vertically and slidably arranged at the left and right ends of the turnover control plate, the lower end of the directional rod is fixedly connected with the lifting welding table, the turnover air cylinder is arranged at the bottom of the lifting welding table below the turnover control plate, the upper end of the piston rod of the turnover air cylinder is fixedly connected with the turnover control plate, the turnover control plate is located below a limiting block, after the pressure sensor of the limiting block is triggered, the turnover air cylinder works to drive the turnover control plate to move downward, the pin shafts are acted on through the movable strip hole, the rocker arm rotates by 90 degrees, the clamping jaws of the two rotary clamping air cylinders are opposite to each other, the clamped workpiece is in a state of waiting for butt joint, the turnover control plate is located in the groove of the limiting block, the pressure sensor is triggered, the piston rod of the transverse moving air cylinder is slightly pushed, the workpiece is aligned, and the image acquisition module arranged on the welding frame assists the alignment operation of the transverse moving air cylinder in the process.

[0014] Optionally, the front end of the welding frame is provided with a mechanical arm, the tail end of the mechanical arm is provided with an electric arc welding gun, the electric arc welding gun is horizontally provided with an accompanying air pipe, one end of the air pipe is connected with an external air pump, the image acquisition module is arranged at the connection position of the mechanical arm and the welding frame, and the image acquisition module is a visual camera.

[0015] The application provides an electric arc welding device for machining electromechanical equipment, and has the following beneficial effects:

[0016] The application realizes the deep integration of multi-station cooperative control and intelligent sensing technology, and constructs an efficient and stable plasma welding system. The four-station cyclic switching design combined with the worm and gear self-locking transmission mechanism enables the synchronous machining of two groups of workpieces through single rotary action, and the welding efficiency is improved by more than 40%. The inner and outer double-groove carrier tooling and the trigger piece positioning system realize automatic recognition and accurate parking of the station, and the positioning error is less than 0.05 mm. The innovative double-carrying module structure cooperates with the transverse moving air cylinder and the elastic stop mechanism to form pressure buffering protection during clamping, so that the workpiece is uniformly stressed and clamping deformation is avoided, and the product qualification rate is improved to 98.6%.

[0017] The turnover mechanism is linked with the rocker arm through the movable strip hole, cooperates with the visual positioning system, realizes 90° turnover of the workpiece and sub-millimeter level butt joint precision, and ensures the consistency of the double-sided welding joint. The 120° sector of the cooling jacket is accurately matched with the work position conversion angle, combined with the circulating cooling medium, so that the workpiece is quickly cooled after welding, and the thermal deformation is reduced by 70%. The real-time adsorption function of the welding powder collection box effectively prevents welding slag pollution and prolongs the equipment maintenance cycle.

[0018] The distributed PLC control system realizes four-station continuous operation and unattended operation by coordinating the timing actions of the rotary motor, the jacking cylinder and the turnover cylinder. The closed-loop feedback mechanism of the visual camera and the pressure sensor enables the welding parameters to be dynamically adapted to different workpiece shapes, significantly improving process adaptability. The whole device reduces energy consumption by 30% while improving welding quality, providing a high-integration and intelligent welding solution for the mechanical and electrical equipment manufacturing field. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0020] The drawings described in the following description only relate to some embodiments of the present application, and are not a limitation of the present application.

[0021] In the drawings:

[0022] Figure 1 A first axial view structural schematic diagram of the present application is shown;

[0023] Figure 2 A second axial view structural schematic diagram of the present application is shown;

[0024] Figure 3 A cooling jacket and workpiece carrier plate separation state axial view structural schematic diagram of the present application is shown;

[0025] Figure 4 A workpiece carrier plate and work position conversion seat separation state axial view structural schematic diagram of the present application is shown;

[0026] Figure 5 A workpiece carrier plate removal state axial view structural schematic diagram of the present application is shown;

[0027] Figure 6 A two clamping module far away state axial view structural schematic diagram of the present application is shown;

[0028] Figure 7 A two clamping module horizontal butt joint state front axial view structural schematic diagram of the present application is shown;

[0029] Figure 8 A two clamping module horizontal butt joint state rear axial view structural schematic diagram of the present application is shown.

[0030] Reference signs

[0031] 1, station conversion seat; 11, rotary motor; 12, worm;

[0032] 2, workpiece carrier; 21, carrier station tool; 211, workpiece groove; 22, trigger piece; 23, rotary shaft; 231, worm gear;

[0033] 3, jacking frame; 31, jacking cylinder; 32, guide sleeve; 33, alignment sensor; 34, welding powder collection box;

[0034] 4, lifting welding platform; 41, lifting guide rod; 42, limit block; 421, pressure sheet sensor; 43, horizontal moving frame; 44, horizontal moving cylinder; 45, horizontal moving guide rail; 46, horizontal moving stop rod; 461, stop block; 462, stop spring;

[0035] 5, clamping module; 51, rotary clamping cylinder; 52, turnover shaft; 53, rocker arm; 54, pin shaft;

[0036] 6, welding frame; 61, mechanical arm; 62, electric arc welding gun; 63, air pipe; 64, image acquisition module;

[0037] 7, distribution box;

[0038] 8, cooling jacket; 81, refrigerant circulation pipe;

[0039] 9, turnover control board; 91, directional rod; 92, movable bar hole; 93, turnover cylinder. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application.

[0041] Please refer to Figures 1 to 8 : Embodiment one:

[0042] The application provides an electric arc welding device for machining electromechanical equipment, which comprises a work station conversion seat 1, a rotating shaft 23 vertically upwardly arranged in the middle of the work station conversion seat 1, a workpiece loading disc 2 fixedly arranged at the upper end of the rotating shaft 23, four loading positions 21 for loading workpieces annularly arranged on the workpiece loading disc 2, a vertical jacking frame 3 fixedly arranged on one side of the work station conversion seat 1, a lifting welding table 4 vertically movably arranged at the upper end of the jacking frame 3, two clamping modules 5 arranged on the lifting welding table 4, wherein one clamping module 5 close to the workpiece loading disc 2 is fixedly arranged on the lifting welding table 4, and the other clamping module 5 is transversely movable on the lifting welding table 4, a transverse moving mechanism arranged on the lifting welding table 4 and used for moving the clamping module 5 away from the workpiece loading disc 2, the two clamping modules 5 are respectively used for clamping workpieces on the workpiece loading disc 2, after clamping, the movable clamping module 5 is transversely moved away to leave enough space for ninety-degree overturning, a overturning mechanism arranged on the lifting welding table 4 and used for controlling the two clamping modules 5 to overturn the workpieces by ninety degrees for butt joint, a welding frame 6 vertically arranged at the back of the lifting welding table 4 at the butt joint position, a mechanical arm 61 arranged on the welding frame 6, an electric arc welding gun 62 arranged at the tail end of the mechanical arm 61 and used for welding the butt joint position of the two workpieces, the clamping module 5 can also clamp the two butt joint workpieces to overturn and carry out reverse welding, and a power distribution box 7 arranged at the back of the welding frame 6.

[0043] A cooling jacket 8 with a one-hundred-and-twenty-degree sector shape is arranged on one side of the workpiece loading disc 2, the cooling jacket 8 always covers a sector area with a one-hundred-and-twenty-degree sector shape on the workpiece loading disc 2, and cold medium circulating pipes 81 are arranged at two ends of the cooling jacket 8.

[0044] The work station conversion seat 1 is horizontally rotatably provided with a worm 12, the worm 12 is engaged with a worm wheel 231 arranged on the rotating shaft 23, and a rotating motor 11 is arranged at one end of the worm 12 and used for driving the worm 12 to rotate.

[0045] Two workpiece grooves 211 are symmetrically arranged in the loading position 21, a trigger piece 22 is arranged at the bottom of the loading position 21 close to the ring edge and corresponds to each loading position 21, one end of the jacking frame 3 close to the workpiece loading disc 2 is provided with a positioning sensor 33, the positioning sensor 33 is arranged below the workpiece loading disc 2 and located on the path passed by the trigger piece 22, when the trigger piece 22 is opposite to the positioning sensor 33, the corresponding loading position 21 is located below the two clamping modules 5 in the vertical state, and the rotating motor 11 stops.

[0046] A jacking cylinder 31 is vertically arranged in the jacking frame 3, the piston rod tail end of the jacking cylinder 31 is fixedly connected with the bottom of the lifting welding table 4 in a perpendicular mode, guide sleeves 32 are vertically arranged at the left and right ends of the jacking frame 3, lifting guide rods 41 are vertically and slidably arranged in the guide sleeves 32, and the upper ends of the lifting guide rods 41 are also fixedly connected with the bottom of the lifting welding table 4 in a perpendicular mode.

[0047] The welding powder collecting box 34 is fixed on the lifting frame 3 near the alignment sensor 33, and the upper part of the welding powder collecting box 34 is opposite to the welding frame 6.

[0048] The lifting welding platform 4 below the turnover mechanism is provided with two limiting blocks 42 distributed left and right, and the upper end groove of the limiting block 42 is provided with a pressure sheet sensor 421.

[0049] The horizontal moving mechanism includes a horizontal moving frame 43, a horizontal moving cylinder 44, a horizontal moving guide rail 45, a horizontal moving stop rod 46, a stop block 461 and a stop spring 462. The horizontal moving guide rail 45 is vertically fixed on one side of the lower end of the horizontal moving frame 43 along the surface of the lifting welding platform 4 to the end of the clamping module 5. The lower end of the movable clamping module 5 is vertically and slidably connected to the horizontal moving guide rail 45. The horizontal moving cylinder 44 is vertically fixed on the other side of the horizontal moving frame 43. The piston rod of the horizontal moving cylinder 44 is fixedly connected to the movable clamping module 5. The horizontal moving stop rod 46 is vertically and slidably arranged at one corner of the lower end of the horizontal moving frame 43. The end of the horizontal moving stop rod 46 near the movable clamping module 5 is fixedly provided with the stop block 461. The stop block 461 is slidably connected to the horizontal moving guide rail 45. The stop spring 462 is sleeved on the horizontal moving stop rod 46 between the stop block 461 and the horizontal moving frame 43. The end surface of the stop block 461 in contact with the movable clamping module 5 is provided with a pressure sensor. When the movable clamping module 5 presses the stop block 461, the horizontal moving cylinder 44 stops working. The other end of the horizontal moving stop rod 46 is provided with a plug.

[0050] The front end of the clamping module 5 is fixedly connected to the rotary clamping cylinder 51 through the vertically penetrating rotary connection of the turnover shaft 52. The other end of the turnover shaft 52 is vertically fixedly provided with the rocker arm 53. The rocker arm 53 and the rotary clamping cylinder 51 form an angle of one hundred and thirty-five degrees. The rocker arms 53 on the two clamping modules 5 are symmetrically distributed left and right. The end of the rocker arm 53 is vertically provided with the pin shaft 54.

[0051] The turnover mechanism comprises a turnover control plate 9, directional rods 91, movable strip holes 92 and a turnover cylinder 93. The movable strip holes 92 are horizontally arranged in the turnover control plate 9, and the pin shafts 54 on the two clamping modules 5 are slidably arranged in the movable strip holes 92. The directional rods 91 are vertically and slidably arranged at the left and right ends of the turnover control plate 9, and the lower ends of the directional rods 91 are fixedly connected with the lifting welding table 4. The turnover cylinder 93 is arranged at the bottom of the lifting welding table 4 below the turnover control plate 9, and the upper end of the piston rod of the turnover cylinder 93 is fixedly connected with the turnover control plate 9. The turnover control plate 9 is below a limiting block 42. After the pressure sensor of the stop block 461 is triggered, the turnover cylinder 93 works to drive the turnover control plate 9 to move downward, and the pin shafts 54 are acted on by the movable strip holes 92, so that the rocker arms 53 rotate by 90 degrees, the clamping jaws of the two rotary clamping cylinders 51 are opposite to each other, and the clamped workpiece is in a state of waiting for butt joint. The turnover control plate 9 is arranged in the groove of the limiting block 42, the pressure sheet sensor 421 is triggered, the piston rod of the transverse moving cylinder 44 is slightly pushed, the workpiece is aligned, and the image acquisition module 64 arranged on the welding frame 6 assists the alignment operation of the transverse moving cylinder 44 in the process.

[0052] In the second embodiment, the front end of the welding frame 6 is provided with a mechanical arm 61, the distal end of the mechanical arm 61 is provided with an electric arc welding gun 62, the electric arc welding gun 62 is horizontally provided with an accompanying air pipe 63, one end of the air pipe 63 is connected with an external air pump, the mechanical arm 61 is connected with the image acquisition module 64 arranged on the welding frame 6, and the image acquisition module 64 is a visual camera.

[0053] The functions and effects of each structure in the above content are further explained and described below, so that those skilled in the art can better understand the technical solutions:

[0054] As shown in Figure 1 The workpiece carrier disc 2 is driven by the rotating shaft 23 to complete the four-station cycle switching in a 90° indexing manner. The transmission mechanism adopts the self-locking characteristics of the worm and the gear, which can effectively prevent the deviation caused by inertia during the work station conversion, and ensure the positioning accuracy of the workpiece carrier disc 2 in the static state. The four workpiece carriers 21 arranged in a ring on the workpiece carrier disc 2 are designed with inner and outer workpiece grooves 211, which can simultaneously carry two welding workpieces to be butt-jointed in the same station.

[0055] The jacking frame 3 is a vertical motion actuator, which drives the lifting welding platform 4 to complete height adjustment through the jacking cylinder 31, and cooperates with the guide system composed of the guide sleeve 32 and the lifting guide rod 41 to ensure smooth and stable lifting process. The alignment sensor 33 arranged on the upper end of the jacking frame 3 and the trigger piece 22 on the bottom of the workpiece carrier 2 form a closed-loop feedback system. When the carrier tool 21 rotates to the welding station, the trigger piece 22 triggers the sensor signal, and the rotating motor 11 stops running, realizing accurate positioning of the station. The specially arranged welding powder collection box 34 is located directly below the welding area, which can collect the scattered welding slag and powder in real time during the welding process, avoiding pollution of the workpiece surface and mechanical parts.

[0056] The double clamping module 5 arranged on the lifting welding platform 4 adopts a dynamic and static combined design, in which the fixed end clamping module 5 and the movable end clamping module 5 controlled by the horizontal movement mechanism form a clamping alignment system. The horizontal movement mechanism drives the movable end clamping module 5 to slide along the horizontal movement guide rail 45 through the horizontal movement cylinder 44, and cooperates with the elastic limiting mechanism composed of the horizontal movement stop rod 46 and the stop block 461 to automatically stop moving when the built-in pressure sensor in the stop block 461 reaches the preset threshold, ensuring that the workpiece clamping process maintains sufficient clamping force and avoids excessive pressure causing workpiece deformation. The mechanism realizes accurate positioning and flexible contact of the workpiece during clamping through the double protection of mechanical limiting and electrical control.

[0057] The core component of the turnover mechanism, the turnover control plate 9, is coupled with the pin shaft 54 of the clamping module 5 through the movable strip hole 92. When the turnover cylinder 93 drives the turnover control plate 9 to move downward, the movable strip hole 92 generates a vector force on the pin shaft 54, forcing the rocker arm 53 to rotate 90° around the turnover shaft 52, so that the two rotary clamping cylinders 51 carry out spatial pose adjustment of the workpiece. The pressure sheet sensor 421 in the limiting block 42 can sense the downward contact state of the turnover control plate 9 in real time, trigger the rear linkage horizontal movement cylinder 44 for micro-distance adjustment, and cooperate with the visual recognition function of the image acquisition module 64 to realize sub-millimeter level alignment accuracy of the workpiece butt joint surface. During this process, the 135° angle design of the rocker arm 53 and the rotary clamping cylinder 51 effectively increases the length of the force arm of the overturning torque, reducing the driving energy consumption.

[0058] The mechanical arm 61 carried by the welding frame 6 adopts a multi-degree-of-freedom motion mechanism, and the electric arc welding gun 62 and the associated gas pipe 63 at the end form a composite welding unit. The electric arc welding gun 62 generates a high-temperature plasma beam through high-frequency electric arc during welding, and cooperates with the protective gas delivered by the gas pipe 63 to form a stable welding environment, significantly improving the weld quality. The image acquisition module 64 adopts a high-resolution visual camera, which can capture the position offset of the workpiece butt joint surface in real time, automatically correct the advancing distance of the horizontal movement cylinder 44 through a closed-loop feedback system, and ensure that the welding path and the workpiece joint completely coincide. The visual system can also automatically identify the weld shape and dynamically adjust the welding parameters to realize intelligent welding process control.

[0059] Cooling jacket 8 adopts 120° sector structure to cover the machining area of workpiece carrier 2, and the internal circulating cooling medium can quickly absorb the welding residual heat to avoid the deformation of workpiece due to heat accumulation. The sector coverage range matches the work position conversion angle, ensuring that each carrier tool 21 can enter the cooling area for heat balance treatment after completing welding. The distribution box 7 integrates multiple electrical control modules, adopts distributed control strategy to coordinate and manage each actuator, and realizes the automatic operation of welding process through PLC programming.

[0060] Working principle:

[0061] After the device is started, the operator loads the workpieces to be welded into the workpiece slots 211 on the inner and outer sides of the carrier tool 21 of the workpiece carrier 2. When the rotating motor 11 drives the worm 12 to rotate the worm gear 231, the rotating shaft 23 rotates accurately at 90° indexing, and the carrier tool 21 enters the welding position in turn. In this process, the trigger piece 22 at the bottom of the carrier tool 21 rotates synchronously with the workpiece carrier 2, and when the trigger piece 22 passes through the alignment sensor 33 on the jacking frame 3, the sensor signal triggers the rotating motor 11 to stop, ensuring that the current carrier tool 21 is accurately parked directly below the two clamping modules 5. At this time, the jacking cylinder 31 pushes the lifting welding table 4 to stably descend along the guide sleeve 32 and the lifting guide rod 41 to form a guide system, so that the fixed-end clamping module 5 and the movable-end clamping module 5 reach the workpiece clamping position respectively.

[0062] After the rotating clamping cylinder 51 clamps the workpiece, the horizontal moving cylinder 44 drives the movable-end clamping module 5 to slide outward along the horizontal moving guide rail 45. In this process, the stop block 461 forms elastic buffering to the clamping module 5 through the pre-tightening force of the stop spring 462, and when the clamping module 5 contacts the stop block 461 and triggers the built-in pressure sensor, the horizontal moving cylinder 44 automatically stops, ensuring that the space between the two clamping modules 5 forms a safety space required for 90° rotation. At this time, the rotating cylinder 93 is started to drive the rotating control plate 9 to move downward along the directional rod 91, and the movable slot 92 exerts a vector force on the pin shaft 54 of the two clamping modules 5, forcing the rocker arm 53 to rotate 90° synchronously around the rotating shaft 52. In this process, the 135° angle formed by the rocker arm 53 and the rotating clamping cylinder 51 allows the workpiece to obtain the optimal force arm length during rotation, effectively reducing the driving energy consumption. When the rotating control plate 9 is pressed into the recess of the limiting block 42 to trigger the pressure sheet sensor 421, the horizontal moving cylinder 44 performs a micro-advance action, and cooperates with the visual positioning function of the image acquisition module 64 to realize the sub-millimeter level accurate positioning of the workpiece butt joint surface.

[0063] After the docking is completed, the mechanical arm 61 on the welding frame 6 carries the arc welding gun 62 to move along the preset trajectory, while the associated gas pipe 63 sprays protective gas to the welding area to form a stable welding environment. The image acquisition module 64 captures the weld shape in real time, dynamically adjusts the welding parameters through the closed-loop control system, ensures uniform penetration and smooth weld surface. After the front welding is completed, the clamping module 5 is started again to make the workpiece turn over 180°, and the mechanical arm 61 performs the back welding process to realize the consistency of the double-sided welding quality. The welding slag and powder generated during the welding process are collected in real time by the welding powder collection box 34 to avoid contaminating the workpiece surface.

[0064] The workpiece completed welding rotates into the 120° sector covered by the cooling sleeve 8 with the workpiece carrier 2, and the cooling medium circulates in the sleeve to quickly absorb the residual heat of the workpiece and avoid thermal deformation. At the same time, the subsequent carrier tooling 21 has rotated to the welding station to start a new round of welding cycle. The PLC control system integrated in the distribution box 7 realizes four-station continuous operation by coordinating the action timing of the rotating motor 11, the lifting cylinder 31, the horizontal moving cylinder 44 and the turning cylinder 93, which significantly improves the welding efficiency.

[0065] In this paper, the following points need attention:

[0066] 1. The drawings of the embodiments of the present application only involve the structures involved in the embodiments of the present application, and other structures can refer to the usual design.

[0067] 2. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined to obtain new embodiments.

[0068] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

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 on the upper end of the rotating shaft (23). Four workpiece-bearing fixtures (21) are arranged in a ring on the workpiece carrier (2). Two workpiece slots (211) are symmetrically arranged inside and outside the workpiece-bearing fixtures (211). A vertical lifting frame (3) is fixedly installed on one side of the workstation conversion seat (1). A vertically movable lifting welding table (4) is provided on the upper end of the lifting frame (3). Two clamping modules (5) are provided on the lifting welding table (4). The clamping module (5) near the workpiece carrier (2) is fixedly mounted on the lifting welding table (4). The other clamping module (5) can move laterally on the lifting welding table (4). (4) is provided with a transverse mechanism for moving the clamping module (5) away from the workpiece carrier (2). The two clamping modules (5) are used to clamp the workpiece on the workpiece carrier (2). After clamping, the movable clamping module (5) moves transversely away, leaving 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 workpiece and flip it 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, which always covers at least a 120-degree fan-shaped area on the workpiece carrier (2). The two ends of the cooling sleeve (8) are respectively provided with refrigerant circulation pipes (81). 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) 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 ends of the rocker arms (53) are vertically provided with pins (5). 4); 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 through the front and back. The pins (54) on the two load-bearing modules (5) are slidably placed in the movable slot (92). The left and right ends of the flipping control plate (9) are respectively provided with a guide rod (91) that slides vertically. 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).

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 2, characterized in that, The bottom of the workpiece carrier (2) near the ring edge is provided with a trigger piece (22) for each loading 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 loading fixture (21) is located below the two vertical clamping modules (5), and the rotary motor (11) stops.

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 3, characterized in that, A welding powder collection box (34) is fixedly installed on the lifting frame (3) near the alignment sensor (33), and the welding frame (6) is directly above the welding powder collection box (34).

6. An arc welding device 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 6, 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 fixedly provided with the lateral movement guide rail (45) along the surface of the lifting welding table (4). 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 fixedly provided with the lateral movement cylinder (44). The piston rod end of the lateral movement cylinder (44) is fixedly connected to the movable clamping module (5). The lower end of the lateral movement frame (43) is perpendicular to one corner. A horizontal movement stop bar (46) is provided in a straight sliding manner. A stop block (461) is fixed 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 movable clamping module (5). When the movable 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 7, characterized in that, The limit block (42) is located directly below the flip control plate (9). After the pressure sensor of the stop block (461) is triggered, the flip cylinder (93) works, driving the flip control plate (9) to move down. It acts on the pin (54) through the movable slot (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 plate (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) is slightly pushed to align the workpiece. The image acquisition module (64) provided on the welding frame (6) assists the transverse cylinder (44) in the alignment operation during this process.

9. 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 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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