A mobile welding station

Abstract

The present application belongs to the technical field of welding equipment, and specifically discloses a movable welding workstation, which comprises a transport trolley, a welding execution mechanism and a control mechanism; the transport trolley is used to drive the welding execution mechanism to move to a target welding area; the welding execution mechanism comprises a driving module and a laser welding assembly, the driving module is used to drive the laser welding assembly to move in the X-axis, Y-axis and Z-axis directions to adjust the welding position and welding focal length; the control mechanism is electrically connected with the transport trolley and the welding execution mechanism, and is used to control the operation of each component. The present application can be flexibly moved, can weld various long-welding-seam steel members, and can solve the problem of space limitation in welding of some large steel members.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and more specifically to a mobile welding workstation. Background Technology

[0002] Currently, while conventional laser welding and composite laser welding technologies are widely used in the welding of large steel components in the heavy industry, they have many undeniable drawbacks. These welding methods primarily rely on fixed or moving track-mounted robotic arms for welding operations.

[0003] In actual production, this track-dependent welding method confines the equipment to a specific track layout, placing stringent requirements on the welding site. Furthermore, existing heavy industry steel components are mostly large or super-large metal parts with long welds and large site requirements. For example, when a large heavy industry enterprise was welding large bridge steel components, the limited space made it difficult to lay tracks that met the welding needs, resulting in slow progress and significantly reduced production efficiency.

[0004] Furthermore, fixed or moving track-based robotic arms lack sufficient flexibility when faced with complex welding tasks. When welding steel components of different shapes and locations, a significant amount of time and manpower is often required to adjust the positions of the tracks and robotic arms, making it difficult to quickly respond to diverse production needs and severely restricting the improvement of production efficiency.

[0005] Furthermore, the purchase cost of ordinary laser or composite laser welding equipment is relatively high, and the cost of the supporting fixed or mobile track system, track maintenance, and robot arm debugging will also increase the cost. Summary of the Invention

[0006] This invention provides a mobile welding workstation, which is designed to be flexible and capable of welding various long-seam steel components, thus solving the problem of space constraints in welding some large steel components.

[0007] This invention is achieved through the following technical solution: a mobile welding workstation, comprising a transport trolley, a welding execution mechanism, and a control mechanism;

[0008] The transport trolley is used to move the welding actuator to the target welding area;

[0009] The welding actuator includes a drive module and a laser welding assembly. The drive module is used to drive the laser welding assembly to move in the X-axis, Y-axis and Z-axis directions to adjust the welding position and welding focal length.

[0010] The control mechanism is electrically connected to the transport trolley and the welding actuator, and is used to control the operation of each component.

[0011] Compared with existing technologies, this solution has the following advantages and beneficial effects:

[0012] The transport trolley in this solution can move the welding actuator to any position where welding is required, thus enabling the welding actuator to move flexibly. The drive module can also drive the laser welding assembly to move in the X, Y, and Z axes to adjust the welding position and welding focal length. Therefore, the laser welding assembly can move flexibly during the welding process to weld various long weld seam steel components, thereby solving the problem of space constraints in welding some large steel components.

[0013] Traditional welding equipment is mostly designed with fixed workstations, requiring the workpieces to be welded to be moved to the side of the equipment. For large workpieces (such as steel structures and heavy machinery parts) or workpieces that are difficult to move (such as installed pipes and equipment bases), the handling cost is high and the efficiency is low. In contrast, the transport trolley in this solution can drive the welding actuator to move actively to the target welding area without the need to move the workpiece, which greatly reduces the difficulty of workpiece transfer and is especially suitable for scenarios such as cross-area welding in factory workshops and outdoor on-site welding.

[0014] The drive module in this solution can drive the laser welding assembly to move along the X-axis (lateral), Y-axis (longitudinal), and Z-axis (vertical direction). On the one hand, it can accurately adjust the relative position of the welding assembly and the weld seam, ensuring that the laser beam is accurately aligned with the center of the weld seam, thus solving the problems of weld misalignment and incomplete welding caused by the alignment deviation of traditional manual welding or single-axis adjustment equipment. On the other hand, the focal length of laser welding can be controlled by adjusting the Z-axis to keep the laser energy density within the optimal range (laser welding is highly sensitive to focal length, and focal length deviation can easily lead to insufficient or excessive energy, affecting the weld strength), thereby ensuring the consistency of welding quality for workpieces of different thicknesses and types (such as thin plates and thick plates).

[0015] The control mechanism is electrically connected to the transport trolley and the welding actuator. Operators do not need to operate the movement switch of the transport trolley and the adjustment button of the welding actuator separately. The process of moving the trolley to the target area, adjusting the position of the welding components and starting laser welding can be completed synchronously through the control mechanism. This reduces operation steps, reduces human operation errors and improves work efficiency.

[0016] Furthermore, the drive module includes an X-axis linear module, a Y-axis linear module, and a Z-axis linear module, which can respectively drive the laser welding assembly to move in the X-axis, Y-axis, and Z-axis directions.

[0017] Beneficial effects: The X / Y / Z axis linear modules of this solution can achieve multi-axis coordinated motion under the coordination of the control mechanism, and precisely drive the laser welding components to move along the preset trajectory. The X / Y / Z axis linear modules mostly adopt standardized modular structures (such as integrated components including guide rails, sliders, ball screws, drive motors, etc.). The force structure of each module is more reasonable, and the wear of moving parts is more uniform. Compared with non-modular customized drive mechanisms, it has stronger fatigue resistance, can withstand long-term high-frequency motion operations, reduce downtime caused by drive mechanism failures, and improve the reliability of long-term equipment operation.

[0018] Furthermore, the X-axis linear module includes an X-axis motion platform and an X-axis drive unit. X-axis tracks are connected to both sides of the X-axis motion platform, and a mounting platform is provided on the X-axis motion platform. The mounting platform slides with the X-axis tracks, and the X-axis drive unit can drive the mounting platform to move along the X-axis direction. The laser welding assembly, the Y-axis linear module, and the Z-axis linear module are all mounted on the mounting platform.

[0019] Beneficial effects: In this solution, the mounting platform works in conjunction with the X-axis track on the X-axis motion platform. The mounting platform integrates the laser welding component, the Y-axis linear module, and the Z-axis linear module together, thereby enabling the synchronous movement of the laser welding component, the Y-axis linear module, and the Z-axis linear module in the X-axis direction.

[0020] Furthermore, both sides of the X-axis motion platform are connected to fixing units, which can be fixed on the ground before the welding work begins to fix the X-axis motion platform.

[0021] Beneficial effects: The fixed unit in this solution can ensure the stability of the entire welding actuator during the welding process, and ensure that the X-axis motion platform will not vibrate during the welding process, thereby improving the welding quality.

[0022] Furthermore, the fixing unit includes a magnetic block and a lifting drive for driving the magnetic block to move up and down. The lifting drive is fixed on the X-axis motion platform, and the magnetic block is connected to the output end of the lifting drive.

[0023] Beneficial effects: In this solution, the magnetic chuck (usually an electromagnetic chuck or a permanent magnet chuck) generates a strong magnetic force, quickly adsorbing onto metal surfaces (such as steel plate floors in factory workshops, metal embedded parts in outdoor work areas, or workpiece surfaces) to form a reliable fixed connection. Its magnetic force can be adjusted as needed (e.g., electromagnetic chucks control the suction force by adjusting the current), typically providing a fixing force of several kN to tens of kN, sufficient to counteract the lateral thrust of the X-axis drive unit during welding, the thermal stress of laser welding, and the impact force of the electric arc. The magnetic force of the magnetic chuck stably keeps the X-axis motion platform from shifting, avoiding platform displacement due to insufficient fixing force and ensuring welding accuracy.

[0024] In addition, compared to traditional mechanical fixing methods (such as expansion bolts which require drilling holes and pressure blocks which require pressing against the ground), magnetic blocks are fixed by magnetic attraction, which does not require physical modification or compression of the ground, and will not leave holes, scratches or indentations on the ground, and the fixing method is simpler.

[0025] In this solution, the lifting drive is used to drive the magnetic block to rise and fall. When the magnetic block extends downward, it is easy to attach and fix it to the ground. When it is not needed, the lifting drive can retract the magnetic block upward, thereby moving it away from the ground and making it easy to move the entire welding actuator.

[0026] Furthermore, the bottom of the X-axis motion platform is connected to multiple sets of moving components, which are spaced apart along the length of the X-axis motion platform. Each moving component includes a mounting plate and multiple rollers, which are rotatably mounted on the mounting plate.

[0027] Beneficial effects: The multiple sets of moving components in this solution can provide the function of moving the X-axis motion platform, ensuring that the X-axis motion platform can be moved and adjusted according to the actual welding position. The rollers in the moving components can reduce the friction between the X-axis motion platform and the ground, making it easier to move and reducing wear.

[0028] Furthermore, the transport trolley includes a frame, wheels, and a drive motor for rotating the wheels. The wheels are connected to the bottom of the frame, and the drive motor is electrically connected to the control mechanism. Two sets of support brackets for supporting the welding actuator are connected to one side of the frame. The two sets of support brackets are symmetrically arranged on the left and right sides of the frame. Each support bracket includes a connecting block, a crossbeam, and a vertical beam. The connecting block is fixedly connected to the frame, one end of the crossbeam is connected to the connecting block, and the vertical beam is vertically fixedly connected to the bottom of the crossbeam. A caster wheel is installed at the bottom of the vertical beam.

[0029] Beneficial effects: In this solution, the frame is used to carry the equipment and tools required for the entire workstation to run. The drive motor can drive the wheels to move under the control of the control mechanism, thereby moving the entire transport trolley and moving the welding execution mechanism to the designated position for welding operation.

[0030] In this design, two sets of support brackets are symmetrically positioned on the left and right sides of the vehicle frame, providing support for the welding actuator from both sides. This symmetrical support structure effectively balances the weight distribution of the welding actuator, allowing the transport trolley to move the welding actuator to the designated location. The support brackets in this design include connecting blocks, crossbeams, and vertical beams. The connecting blocks provide fixed connection points for the entire support bracket, the crossbeams provide a horizontal support surface for the welding actuator, and the vertical beams are vertically connected to the crossbeams to form a vertical support structure. This prevents deformation of the support brackets and ensures that the welding actuator remains stable during operation.

[0031] The casters (usually silent casters with brakes) installed at the bottom of the vertical beam can adjust their direction synchronously with the movement of the frame when the support bracket supports the welding actuator. They also secure the transport trolley in place after it stops using the braking function. During the movement of the transport trolley, the casters assist the wheels in adjusting their direction, reducing resistance when the trolley turns. This is especially suitable for turning needs in narrow working spaces (such as between equipment in a workshop), improving the trolley's maneuverability.

[0032] Furthermore, the crossbeam is rotatably connected to the connecting block, and the ends of the crossbeams in the two sets of support brackets that are close to each other are detachably connected to limit pins.

[0033] Beneficial effects: In this design, the crossbeam and the connecting block are rotatably connected, which makes it easy to fold the crossbeam when the transport trolley is needed, thus serving a storage function and reducing the space occupied by the entire support bracket. The setting of the limiting pin helps to fix the folded crossbeam, preventing the two sets of crossbeams from opening on their own and ensuring the stability of the two sets of crossbeams when stored.

[0034] Furthermore, the laser welding assembly includes a fixing plate and a laser welding head and an arc welding gun mounted on the fixing plate. One end of the arc welding gun is positioned facing the welding end of the laser welding head. A weld seam tracking sensor is also provided on the fixing plate.

[0035] Beneficial effects: In this solution, the laser welding head and the arc welding gun achieve composite welding function, while the weld seam tracking sensor can stably identify the weld seam position and realize real-time deviation correction during straight seam welding.

[0036] One end of the arc welding torch is positioned facing the welding end of the laser welding head, ensuring that the welding action areas of the two highly overlap, forming a continuous energy interaction zone between the laser and the electric arc. On one hand, the high-temperature molten pool generated by the laser reduces the melting difficulty of the welding wire in the arc welding torch, decreases the risk of incomplete fusion, and improves the fluidity of the molten pool, resulting in a more uniform weld formation. On the other hand, the electric arc of the arc welding torch can insulate the laser molten pool, slowing down the cooling rate and reducing the hardened structure caused by rapid cooling, thus lowering the risk of weld cracking. This unidirectional arrangement avoids energy waste or process conflicts caused by misalignment of the two action areas, ensuring the stability of the hybrid welding process, and is particularly suitable for high-speed welding scenarios.

[0037] By adjusting parameters such as laser power, arc welding current, and welding wire type, this composite structure can be adapted to welding workpieces of different materials (such as carbon steel, stainless steel, and aluminum alloy) and thicknesses. For example, when welding aluminum alloys, the laser can overcome the high reflectivity limitation of aluminum alloys to achieve stable penetration, while the arc welding torch fills the gaps with aluminum welding wire and suppresses porosity. When welding thin-walled stainless steel, the laser power and arc welding current can be reduced to decrease thermal deformation while ensuring weld strength. Compared to single laser welding or single arc welding, it can handle multiple types of workpieces without frequent changes to welding components, improving the equipment's versatility.

[0038] Furthermore, the transport vehicle is also equipped with an equipment module, which includes one or more of the following: a laser main unit, a water chiller, an equipment control cabinet, a voltage regulator, and an environmentally friendly dust removal device.

[0039] Beneficial effects: The multiple equipment modules integrated on the transport trolley in this solution can be flexibly configured according to user needs, making the entire welding process more stable and meeting different welding requirements. Attached Figure Description

[0040] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0041] Figure 1 This is a perspective view of the support bracket after it has been unfolded in an embodiment of a movable welding workstation according to the present invention.

[0042] Figure 2 This is a perspective view of a transport trolley in an embodiment of a mobile welding workstation according to the present invention;

[0043] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0044] Figure 4 This is a perspective view of the welding actuator in an embodiment of a mobile welding workstation according to the present invention;

[0045] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0046] Figure 6 This is a perspective view of the welding laser assembly and mounting platform in an embodiment of a mobile welding workstation according to the present invention;

[0047] Figure 7 This is a front view of the welding laser assembly in an embodiment of a portable welding workstation according to the present invention;

[0048] Figure 8 This is a perspective view of the welding actuator from a bottom-view direction in an embodiment of a mobile welding workstation according to the present invention;

[0049] Figure 9 This is a perspective view of an embodiment of a portable welding workstation of the present invention, showing the installation of an arc welding power source on a mounting platform.

[0050] Figure 10 This is a perspective view of an arc welding power source in an embodiment of a portable welding workstation according to the present invention.

[0051] The attached diagram shows the markings and corresponding component names:

[0052] 1. Transport trolley; 101. Chassis frame; 102. Wheels; 2. Connecting block; 201. Crossbeam; 202. Vertical beam; 203. Casters; 204. Limit pins; 205. Pins; 3. Equipment control cabinet; 4. Laser main unit; 5. Stabilized power supply; 6. Environmental protection dust removal device; 7. Water chiller; 100. Welding actuator; 8. Z-axis linear module; 801. Z-axis track; 9. Laser welding assembly; 901. Laser welding head; 902. Arc welding... 903. Welding gun; 904. Weld seam tracking sensor; 905. Shielding gas chamber; 906. Dust suction port; 907. Fixing plate; 10. Wire feeder; 11. Fixing unit; 12. X-axis linear module; 121. X-axis rail; 122. Mounting plate; 123. Roller; 13. Mobile welding workstation control console; 14. Grounding interface; 15. Y-axis linear module; 151. Y-axis rail; 16. Mounting platform; 17. Lifting lug; 18. Arc welding power supply; 19. Power interface. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0054] As one embodiment of this application, such as Figures 1-4As shown, this embodiment provides a mobile welding workstation, including a transport trolley 1, a welding actuator 100, and a control mechanism;

[0055] The transport trolley 1 is used to move the welding actuator 100 to the target welding area;

[0056] The welding actuator 100 includes a drive module and a laser welding assembly 9. The drive module is used to drive the laser welding assembly 9 to move in the X-axis, Y-axis and Z-axis directions to adjust the welding position and welding focal length.

[0057] The control mechanism is electrically connected to the transport trolley 1 and the welding actuator 100, and is used to control the operation of each component.

[0058] In one embodiment, combined Figure 4 and Figure 5 As shown, the drive module in this embodiment includes an X-axis linear module 12, a Y-axis linear module 15, and a Z-axis linear module 8. The X-axis linear module 12, Y-axis linear module 15, and Z-axis linear module 8 can drive the laser welding assembly 9 to move in the X-axis, Y-axis, and Z-axis directions, respectively. Specifically, the X-axis linear module 12 includes an X-axis motion platform and an X-axis drive unit. Both sides of the X-axis motion platform are bolted to X-axis rails 121. A mounting platform 16 is provided on the X-axis motion platform. The mounting platform 16 slides with the X-axis rails 121. The X-axis drive unit can drive the mounting platform 16 to move along the X-axis direction. The laser welding assembly 9, the Y-axis linear module 15, and the Z-axis linear module 8 are all mounted on the mounting platform 16.

[0059] In this embodiment, the Y-axis linear module 15 includes a Y-axis platform, a Y-axis track 151 and a Y-axis drive unit. The Y-axis platform is fixed to the mounting platform 16 by bolts. The Y-axis track 151 is mounted on the Y-axis platform. The Z-axis linear module 8 is slidably engaged with the Y-axis track 151. The Y-axis drive unit can drive the Z-axis linear module 8 to move along the Y-axis direction.

[0060] The Z-axis linear module 8 includes a Z-axis platform, a Z-axis track 801, and a Z-axis drive unit. The Z-axis platform slides in conjunction with the Y-axis track 151.

[0061] The laser welding component 9 slides vertically with the Z-axis track 801, and the Z-axis drive unit can drive the laser welding component 9 to move along the Z-axis direction.

[0062] In this embodiment, the X-axis drive unit, Y-axis drive unit, and Z-axis drive unit all include a servo motor, a ball screw, a screw nut, a guide rail slider, and a support base. The output shaft of the servo motor is rigidly connected to one end of the ball screw via a coupling (such as a flexible coupling to compensate for installation deviations). The screw nut is connected to the corresponding module and laser welding assembly 9, thereby facilitating the driving of the corresponding module and laser welding assembly 9 to achieve XYZ three-axis movement.

[0063] In one embodiment, fixing units 11 are connected to both sides of the X-axis motion platform. The fixing units 11 can be fixed on the ground before the welding work begins to fix the X-axis motion platform. In this embodiment, four fixing units 11 are provided, with two fixing units 11 forming a group, and the two groups of fixing units 11 are located on both sides of the X-axis motion platform respectively.

[0064] In one embodiment, such as Figure 4 As shown, the fixing unit 11 in this embodiment includes a magnetic block and a lifting drive component that drives the magnetic block to move up and down. The lifting drive component is fixed on the X-axis motion platform. The magnetic block is connected to the output end of the lifting drive component. In this embodiment, the magnetic block is an electromagnetic chuck or a permanent magnet chuck, which can generate a strong magnetic force and quickly attract metal surfaces (such as steel plate floors in factory workshops or metal embedded parts in outdoor work areas) to form a reliable fixed connection. The lifting drive component can be a hydraulic telescopic cylinder or an electric telescopic cylinder. The entire laser mobile welding workstation motion platform (i.e., the X-axis motion platform) can be fixed by the magnetic block to ensure that there is no shaking during the welding process, thereby improving the welding quality.

[0065] In one embodiment, combined Figure 8 As shown, the bottom of the X-axis motion platform is connected to multiple sets of moving components, which are distributed at intervals along the length of the X-axis motion platform. In this embodiment, the moving components include a mounting plate 122 and multiple rollers 123. The multiple rollers 123 are rotatably mounted on the mounting plate 122. In this embodiment, the mounting plate 122 is fixed to the bottom of the X-axis motion platform by bolts.

[0066] In this embodiment, a moving component is added to the bottom of the X-axis motion platform. The multiple rollers 123 in the moving component can ensure that the welding position is movable, thereby facilitating the adjustment of the position of the X-axis motion platform according to the actual welding position.

[0067] In one embodiment, such as Figure 1 and Figure 2As shown, the transport trolley 1 includes a frame 101, wheels 102, and a drive motor for rotating the wheels 102. The wheels 102 are connected to the bottom of the frame 101, and the drive motor is electrically connected to the control mechanism. Two sets of support brackets for supporting the welding actuator 100 are connected to one side of the frame 101. The two sets of support brackets are symmetrically arranged on the left and right sides of the frame 101, respectively. Figure 2 and Figure 3 As shown, the support bracket in this embodiment includes a connecting block 2, a crossbeam 201, and a vertical beam 202. The connecting block 2 is fixedly connected to the vehicle frame. One end of the crossbeam 201 is connected to the connecting block 2. The vertical beam 202 is vertically fixedly connected to the bottom of the crossbeam 201. A caster wheel 203 is installed at the bottom of the vertical beam 202. The caster wheel 203 is equipped with a brake pad, which is convenient to release the brake pad after moving to the designated position to prevent the transport trolley 1 from moving on its own.

[0068] In this embodiment, each set of support brackets is provided with two vertical beams 202, which are distributed at intervals, and the top of the vertical beams 202 is welded and fixed to the bottom of the horizontal beams 201.

[0069] like Figure 3 As shown, in this embodiment, the crossbeam 201 and the connecting block 2 are rotatably connected by a pin 205. This facilitates the folding of the support bracket and reduces the space occupied. The welding actuator 100 is only required to be transported. Figure 1 As shown, the two sets of support brackets are then unfolded to support the welding actuator 100.

[0070] like Figure 2 As shown, the ends of the crossbeams 201 in the two sets of support brackets that are close to each other are detachably connected to limiting pins 204. Specifically, the limiting pins 204 have a U-shaped structure and pin holes are opened at the top of the ends of the two crossbeams 201 that are close to each other. When the two sets of support brackets are folded and stored together, the two ends of the limiting pins 204 are respectively inserted into the pin holes of the two crossbeams 201, thereby ensuring the stability of the folded state of the support brackets and preventing the support brackets from unfolding on their own. When the support brackets need to be unfolded for use, the limiting pins 204 are pulled out from the pin holes, and the support brackets can then be rotated and unfolded.

[0071] In one embodiment, such as Figure 4 As shown, lifting lugs 17 are connected to both ends of the X-axis motion platform. The lifting lugs 17 facilitate the hoisting of the entire welding actuator 100 onto the support bracket of the transport trolley 1.

[0072] In one embodiment, combined Figure 7As shown, the laser welding assembly 9 includes a fixing plate 906 and a laser welding head 901 and an arc welding gun 902 mounted on the fixing plate 906. One end of the arc welding gun 902 is positioned towards the welding end of the laser welding head 901. In this embodiment, the laser welding head 901 is vertically downward, and the end of the arc welding gun 902 is inclined towards the laser welding head 901. Figure 6 As shown, in this embodiment, a wire feeder 10 is also provided on the mounting platform 16, and the wire feeder 10 is used to feed welding wire to the arc welding gun 902.

[0073] When the arc welding gun 902 and the laser welding head 901 work together, the laser welding head 901 first preheats and penetrates the weld area, and then the arc welding gun 902 fills the welding wire and forms a full weld, forming a composite welding mode of laser penetration and arc filler. For example, when welding steel plates with a thickness of 8-15mm, the laser can quickly penetrate 60%-70% of the plate thickness, and the arc welding gun 902 fills the remaining area with the welding wire fed by the wire feeder 10. This avoids the lack of fusion defects caused by the gap when the laser is welded alone, and also reduces the heat-affected zone when the arc is welded alone, so that the weld has the advantages of high strength and low deformation, meeting the welding requirements of high-requirement workpieces.

[0074] A weld seam tracking sensor 903 is also installed on the fixed plate 906. The weld seam tracking sensor 903 (such as a vision sensor or laser contour sensor) can collect images or contour data of the weld seam area in real time, determine the center position of the weld seam through algorithm analysis, and feed back the deviation signal to the control mechanism. Even if there are processing errors in the workpiece (such as weld seam offset or inconsistent bevel angle) or vibration during the welding process causes the component to shift, the weld seam tracking sensor 903 can quickly identify and trigger adjustments. For example, when the weld seam is offset by 0.5mm along the X-axis, after the weld seam tracking sensor 903 feeds back a signal, the control mechanism can immediately drive the X-axis linear module 12 to fine-tune the position of the laser welding head 901 and the arc welding gun 902 to ensure that they are always aligned with the center of the weld seam, avoiding weld deviation defects caused by visual errors or fatigue during manual alignment, and controlling the weld seam position accuracy within ±0.1mm.

[0075] In one embodiment, such as Figure 9 and Figure 10 As shown, an arc welding power supply 18 is also installed on the mounting platform 16. The arc welding power supply 18 is provided with two power interfaces 19. The arc welding power supply 18 provides a stable welding current / voltage for the arc welding gun 902, maintaining the stability of arc combustion and welding process.

[0076] In one embodiment, such as Figure 7As shown, in this embodiment, a protective gas chamber 904 is connected to the laser welding head 901 by screws. A dust suction port 905 is connected to the fixing plate 906 and located on one side of the laser welding head 901. The suction end of the dust suction port 905 is set towards the lower end of the laser welding head 901, and the top of the dust suction port 905 is connected to the air inlet of the environmental protection dust removal device 6 through a pipe. The environmental protection dust removal device 6 (such as a small pulse dust purifier) ​​has complete functions of negative pressure dust suction, filter filtration, and clean exhaust. Its air inlet can provide a stable negative pressure, and the welding fumes near the dust suction port 905 are efficiently sucked in through the pipe.

[0077] The protective gas chamber 904 can deliver protective gas (such as argon or a mixed gas) to the weld area at the lower end of the laser welding head 901, forming a localized inert atmosphere to prevent the weld from being corroded by oxygen and nitrogen in the air (reducing porosity and oxide scale formation); while the dust extraction port 905, connected to the environmentally friendly dust removal device 6 through a pipeline, can accurately capture the fumes (such as metal oxide particles and welding wire volatiles) generated during the welding process based on the airflow field formed by the protective gas chamber 904. When the two work together:

[0078] The directional flow of the protective gas can guide the fumes to the dust extraction port 905, preventing the fumes from spreading to the weld area and affecting the protective gas atmosphere, while also improving the dust extraction port 905's efficiency in capturing fumes.

[0079] The negative pressure suction of the suction port 905 can quickly remove the fumes near the weld, preventing the fumes from adhering to the protective lens of the laser welding head 901 (reducing laser energy attenuation caused by lens contamination and extending the lens life), while preventing the fumes from interfering with the visual acquisition of the weld tracking sensor 903 (avoiding weld recognition deviation caused by the sensor being blocked by fumes).

[0080] In one embodiment, such as Figure 4 and Figure 6 As shown, in this embodiment, a mobile welding workstation control console 13 is also connected to the platform 16. Its main functions include adjusting the welding trajectory, welding editing, graphic editing, weld tracking, etc.; it can also realize remote control operation, and has functions such as visualization, controllability, editing, monitoring, and voice broadcast. The mobile welding workstation control console 13 includes an arc welding host, which has the following functions:

[0081] Providing the electric arc: The arc welding machine generates an electric arc, which melts the welding material and the base material, thus achieving welding. This is the most critical step in the welding process. Controlling welding parameters: The arc welding machine can control welding parameters such as welding current, arc voltage, and welding speed to ensure welding quality and efficiency.

[0082] Protective gas for weld seam protection: During the welding process, the arc welding machine also provides protective gas to prevent the weld seam from being affected by oxygen and other harmful gases in the air, thereby ensuring the welding quality.

[0083] Achieving automated welding: In arc welding robots, the arc welding host is usually used in conjunction with other components such as control systems and robotic arms to achieve automated welding, thereby improving production efficiency and welding quality.

[0084] In one embodiment, such as Figure 4 and Figure 6 As shown, in this embodiment, a ground wire interface 14 is provided on the mounting platform 16. The ground wire interface 14 is used to pass through the laser welding power distribution wire. Its main function is to control the electrical control components of the laser welding part, which move along the tracks with the entire mounting platform 16, facilitating wiring and allowing the welding parts to be controlled independently without interference.

[0085] In one embodiment, such as Figure 1 and Figure 2 As shown, the transport trolley 1 is also equipped with an equipment module, which includes one or more of the following: laser main unit 4, water chiller 7, equipment control cabinet 3, voltage stabilizer 5, and environmental protection dust removal device 6.

[0086] Equipment control cabinet 3 is mainly used as the main control cabinet for all moving parts and related control elements. The control mechanism is located inside the equipment control cabinet 3.

[0087] The main laser unit 4 has the core function of generating laser light. It provides energy to the laser working medium through an excitation pump system, causing population inversion of the particles in the working medium, which in turn produces stimulated emission amplification and ultimately outputs laser light.

[0088] The water chiller 7's main function is to control the temperature of the laser host 4. The laser host 4 generates a large amount of heat during operation; if this heat is not dissipated in time, it can lead to a decrease in laser performance or even damage. The chiller uses refrigerant circulation to remove the heat generated by the laser host 4, keeping it within its optimal operating temperature range, thus ensuring its stability and efficient operation.

[0089] Improving Laser Output Stability: Temperature fluctuations affect the output power and wavelength stability of a laser. A good cooling system can maintain a constant operating temperature, thus ensuring the consistency and accuracy of laser output, which is especially important for precision machining such as laser cutting and laser engraving. Extending Equipment Lifespan: Sustained high temperatures accelerate the aging process of materials and increase the probability of failure. An effective cooling mechanism not only reduces maintenance needs but also significantly extends the overall lifespan of the equipment. Optimizing Work Efficiency: Proper cooling can reduce downtime caused by overheating, ensure continuous production line operation, and improve production efficiency.

[0090] The regulated power supply 5 provides precise power to the laser welding system to ensure stable welding quality, and provides stable power to the drive module to ensure motion control accuracy.

[0091] The environmentally friendly dust removal device 6 efficiently captures various types of welding fumes, reduces occupational exposure risks, minimizes fume diffusion, improves the overall working environment, prevents fume adhesion, ensures the accuracy of the weld seam tracking sensor 903, avoids fume corrosion, and extends the lifespan of the laser welding components 9.

[0092] In this embodiment, multiple device modules are integrated on the transport vehicle 1, and the transport vehicle 1 adopts a double-layer design. Multiple device modules are installed sequentially on the upper and lower layers of the transport vehicle 1, thus making effective use of the space of the actual transport vehicle 1.

[0093] The specific implementation process is as follows:

[0094] Initiate a system self-test to confirm that the laser, water chiller 7, environmental ash removal device 6, and other equipment are functioning normally, and that the welding module guide rails are moving smoothly and sensor communication is stable. Deploy the support brackets on both sides of the transport trolley 1, remove the limit pins 204 and secure the casters 203, and hoist the X-axis motion platform to the brackets for temporary fixation. Based on the weld parameters (length, width, type), preset the welding mode (e.g., laser-arc hybrid welding), parameters (laser power 1200-1500W, arc welding current 180-220A), and trolley movement path on the control console.

[0095] The transport trolley 1 is started via a remote terminal. After arriving at the target area, the magnetic blocks on both sides are activated to fix the platform. The welding assembly is calibrated: the X-axis is aligned with the weld start point, the Y-axis is adjusted for width and centered, the Z-axis is fixed for focal length, and the weld tracking sensor 903 is used for secondary accuracy verification.

[0096] Start the environmental ash removal device 6, water chiller 7, and regulated power supply 5. Remotely click "Start Welding". The laser preheats for 0.5 seconds to form a molten pool, and the arc welding torch 902 feeds wire for filling. The X-axis drives the platform to move at 1.2-1.5 m / min. The weld seam tracking sensor 903 acquires images every 10 ms and fine-tunes the Y / Z axes (overlap ≥ 99%) within 50 ms. Real-time monitoring of parameters, alarms in case of abnormalities (such as molten pool overheating), automatic power reduction or shutdown in case of fault, and emergency stop in case of emergency.

[0097] After welding, the laser welding head 901 and arc welding gun 902 are shut off, and the environmental ash removal device 6 continues to run for 30 seconds. The drive module is reset, the magnetic block rises, and the X-axis motion platform is hoisted back to the support bracket and transported to the designated position. When not in use, the ash removal drawer is emptied, the filter screen is replaced, the welding head lens is wiped, the arc welding gun 902 nozzle is cleaned, and the parameters are recorded and uploaded to the cloud. The remotely controlled transport trolley 1 returns to the storage area, the power is turned off, the wheels 102 are locked, the process is completed, and the support bracket on the transport trolley 1 is folded and fixed with the limit pin 204.

[0098] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mobile welding workstation, characterized in that, Includes transport trolley, welding actuator, and control mechanism; The transport trolley is used to move the welding actuator to the target welding area; The welding actuator includes a drive module and a laser welding assembly. The drive module is used to drive the laser welding assembly to move in the X-axis, Y-axis and Z-axis directions to adjust the welding position and welding focal length. The control mechanism is electrically connected to the transport trolley and the welding actuator, and is used to control the operation of each component.

2. The mobile welding workstation according to claim 1, characterized in that, The drive module includes an X-axis linear module, a Y-axis linear module, and a Z-axis linear module, which can drive the laser welding assembly to move in the X-axis, Y-axis, and Z-axis directions, respectively.

3. A mobile welding workstation according to claim 2, characterized in that, The X-axis linear module includes an X-axis motion platform and an X-axis drive unit. X-axis tracks are connected to both sides of the X-axis motion platform. A mounting platform is provided on the X-axis motion platform. The mounting platform slides with the X-axis tracks. The X-axis drive unit can drive the mounting platform to move along the X-axis direction. The laser welding assembly, the Y-axis linear module, and the Z-axis linear module are all mounted on the mounting platform.

4. A mobile welding workstation according to claim 3, characterized in that, Both sides of the X-axis motion platform are connected to fixing units, which can be fixed on the ground before the welding work begins to fix the X-axis motion platform.

5. A mobile welding workstation according to claim 4, characterized in that, The fixing unit includes a magnetic block and a lifting drive component that drives the magnetic block to move up and down. The lifting drive component is fixed on the X-axis motion platform, and the magnetic block is connected to the output end of the lifting drive component.

6. A mobile welding workstation according to claim 3, characterized in that, The bottom of the X-axis motion platform is connected to multiple sets of moving components, which are spaced apart along the length of the X-axis motion platform. Each moving component includes a mounting plate and multiple rollers, which are rotatably mounted on the mounting plate.

7. A mobile welding workstation according to claim 1, characterized in that, The transport trolley includes a frame, wheels, and a drive motor for rotating the wheels. The wheels are connected to the bottom of the frame, and the drive motor is electrically connected to the control mechanism. Two sets of support brackets for supporting the welding actuator are connected to one side of the frame. The two sets of support brackets are symmetrically arranged on the left and right sides of the frame. Each support bracket includes a connecting block, a crossbeam, and a vertical beam. The connecting block is fixedly connected to the frame, one end of the crossbeam is connected to the connecting block, and the vertical beam is vertically fixedly connected to the bottom of the crossbeam. A caster wheel is installed at the bottom of the vertical beam.

8. A mobile welding workstation according to claim 7, characterized in that, The crossbeam is rotatably connected to the connecting block, and the ends of the crossbeams in the two sets of support brackets that are close to each other can be detachably connected to limit pins.

9. A mobile welding workstation according to claim 1, characterized in that, The laser welding assembly includes a fixed plate and a laser welding head and an arc welding gun mounted on the fixed plate. One end of the arc welding gun is positioned facing the welding end of the laser welding head. A weld seam tracking sensor is also provided on the fixed plate.

10. A mobile welding workstation according to any one of claims 1-9, characterized in that, The transport vehicle is also equipped with an equipment module, which includes one or more of the following: laser host, water chiller, equipment control cabinet, voltage regulator, and environmental protection dust removal device.

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