Full-automatic welding and polishing production line for aluminum veneer

Abstract

The utility model provides a kind of aluminium veneer full-automatic welding polishing production line, production line equipment includes control system, feeding and transfer robot, feeding positioner, automatic laser welding robot, welding positioning workbench, automatic material turning machine, automatic polishing robot, polishing positioning workbench, polishing automatic tool changer, polishing dust dust removal room, transfer and unloading mechanical robot.Control system is installed in control console;Feeding and transfer robot and feeding positioner are installed in feeding and transfer area;Automatic laser welding robot, welding positioning workbench are installed in laser welding station;Automatic material turning machine is installed in material turning area;Automatic polishing robot, polishing positioning workbench, polishing automatic tool changer and polishing dust dust removal room are installed in polishing work station;Transfer and unloading mechanical robot is installed in transfer and unloading area.The utility model changes traditional aluminium veneer welding polishing production process, and forms a aluminium veneer full-automatic welding polishing production line by combining automation selection and upgrading to existing production equipment.

Description

Technical Field

[0001] This utility model relates to a fully automated welding and grinding production line for aluminum single panels, belonging to the technical field of aluminum single panel production technology. Background Technology

[0002] Aluminum single-layer panels are a type of building decoration material that combines numerous advantages such as good environmental friendliness, corrosion resistance, high strength, ease of cleaning, and recyclability. The production of aluminum single-layer panels involves processes such as punching and cutting raw materials, bending, assembly, welding, and grinding to process the aluminum panels into the required shapes and sizes. Among these processes, welding and grinding are particularly difficult, technically demanding, and slow, and the production process can generate harmful substances or dust particles that may endanger workers' health.

[0003] Because aluminum panels are non-standard custom-made components, each panel has a different shape and size, resulting in a large workforce required for their production and turnover. The welding and grinding processes have low levels of automation, and the production process, quality, and efficiency largely depend on the skill level and experience of the workers.

[0004] Improving the automation level, efficiency, and quality of aluminum panel welding and grinding processes is of paramount importance. Summary of the Invention

[0005] The purpose of this invention is to address the challenges of high production difficulty, high technical requirements, slow processing efficiency, and the generation of harmful substances or dust particles that endanger workers' health during the welding and grinding processes of aluminum panels, and to improve the automation level of the aluminum panel welding and grinding processes by proposing a fully automated aluminum panel welding and grinding production line.

[0006] The technical solution of this utility model is as follows: a fully automatic aluminum single-panel welding and grinding production line, the equipment of which includes a control system, a feeding and transfer robot, a feeding positioner, an automatic laser welding robot, a welding positioning workbench, an automatic material turning machine, an automatic grinding robot, a grinding positioning workbench, an automatic grinding tool changer, a grinding dust removal room, and a transfer and unloading robot; all the equipment for the automated production of aluminum single-panel welding and grinding is installed on the fully automatic aluminum single-panel welding and grinding production line.

[0007] The aluminum single-panel welding and grinding production line includes a control console, a feeding and transfer area, a laser welding station, a turning area, a grinding workstation, and a transfer and unloading area according to the production process flow. The control system is installed on the control console; the feeding and transfer robot and the feeding positioner are installed in the feeding and transfer area; the automatic laser welding robot and the welding positioning workbench are installed in the laser welding station; the automatic turning machine is installed in the turning area; the automatic grinding robot, the grinding positioning workbench, the automatic grinding tool changer, and the grinding dust removal room are installed in the grinding workstation; and the transfer and unloading robot is installed in the transfer and unloading area.

[0008] The control system includes a computer, a PLC programmable logic controller, a memory, a data bus, and control software; a force-controlled grinding system is configured for the automatic grinding robot.

[0009] The force-controlled grinding system includes a force position compensator and dual electric grinding heads. The force-controlled grinding system is deeply integrated with the control system. The force-controlled grinding system has a built-in gravity compensation algorithm, which can automatically calculate and compensate for the gravity component of the grinding tool under different postures to ensure accurate force. The force-position compensator uses a closed-loop feedback control method to adjust and maintain constant grinding pressure. The force-position compensator includes a sensing unit, an execution unit, a rotation unit, and a control unit. The force sensor in the sensing unit is installed between the grinding head and the spindle to detect the normal force between the grinding head and the workpiece in real time. The cylinder in the execution unit drives the spindle to extend and retract. The servo motor in the rotation unit drives the spindle to rotate via a coupling. The control unit completes data acquisition, algorithm calculation, and command output. When the detected normal force difference between the grinding head and the workpiece is less than a threshold, the compensator's execution mechanism quickly adjusts: the controller adjusts the output force of the cylinder, and the spindle slides within the bearing housing, achieving flexible floating of the grinding head. The working process of the force-position compensator is as follows: control unit receives force value → sensor collects actual contact force in real time → calculates error value → controller determines adjustment scheme → adjusts spindle or robot posture → records compensation data → re-detects. The threshold value refers to the limit value of the force-position compensator's adjustment range.

[0010] The automatic laser welding robot includes a ground rail, an arc welding robot, an automatic torch cleaning and wire cutting device, and a laser guiding system. The arc welding robot is installed on the ground rail, the automatic torch cleaning and wire cutting device is installed on the base of the arc welding robot, and the laser guiding system is installed next to the welding torch of the arc welding robot arm.

[0011] The arc welding robot includes a six-axis robotic arm, anti-collision sensors, an electronic control system, a welding power source, a wire feeder, a welding torch, and a shielding gas supply unit. The arc welding robot is equipped with anti-collision sensors, providing flexible anti-collision functionality. The arc welding robot drives the six-axis robotic arm in reciprocating motion on a ground track. Under the control of the electronic control system, the six-axis robotic arm precisely positions the welding location and flexibly adjusts the welding torch's posture and position. The welding power source connects to the welding torch and provides it with a large current. The shielding gas supply unit provides gas protection for the welding torch. Under the control of the electronic control system, the wire feeder continuously supplies welding wire to the welding torch.

[0012] The laser guidance system includes a laser emission source, a laser receiving target, a prism, and a controller. The laser guidance system is installed next to the welding gun of the arc welding robot. After the arc welding robot runs to the designated position according to the preset path, it is precisely guided by the laser guidance system to the welding position to perform the welding action. In addition to picking up the welding position, the laser guidance system can also detect the weld condition in real time during the welding process and feed the detection results back to the control system. The control system makes real-time dynamic adjustments and compensations based on the feedback information to improve the welding quality.

[0013] The automatic torch cleaning and wire cutting device includes a torch cleaning and wire cutting mechanism, a material receiving assembly, and a controller. The automatic torch cleaning and wire cutting device is installed on the base of the arc welding robot and moves with the robot, facilitating the robot's cleaning of the welding torch at any time. The device is used to remove welding slag from the inner wall of the welding torch, addressing issues such as excessively short or long welding wires, or spherical ends, thereby improving welding quality. It also features wire cutting, oil removal, slag removal, and nozzle outer surface grinding functions. The controller controls the operation of the torch cleaning and wire cutting mechanism.

[0014] The welding positioning workbench includes a closed-loop electric cylinder centering transmission positioning servo and a pneumatic clamping fixture. After the aluminum single-panel material is transported to the workbench by the loading and transfer robot, the centering is completed by the closed-loop electric cylinder centering transmission positioning servo and the pneumatic clamping fixture. The positioning workbench adopts a steel structure and is covered with fireproof and heat-insulating board on the table surface. The closed-loop electric cylinder centering transmission positioning servo receives signals from the system to perform centering and positioning, and the displacement sensor detects the workpiece size. If the deviation is >0.5mm, an alarm is triggered.

[0015] The automatic material turning machine includes a side-pushing mechanism, a sensor, a vacuum suction cup gripper, and a limit stop. The automatic material turning machine is installed on the roller conveyor line at the bottom of the conveyor line. The limit stop is installed at the tail end and has a built-in sensor. The side-pushing mechanism is installed on the side of the conveyor line, and the vacuum suction cup gripper is installed at the lower end of the conveyor line. The roller conveyor line has a frequency converter with five speed settings. After the product is transported on the conveyor line to the bottom and is stopped by the limit stop, the sensor of the limit stop synchronously identifies the product and activates the side-pushing mechanism on the side of the conveyor line to push the product to the side. The vacuum suction cup gripper at the bottom picks up the product and flips it over. Then, the transfer and unloading robot picks up the lower surface to complete the flipping action.

[0016] The electrical control system includes a control cabinet, servo drive, I / O interface module, welding power supply, and communication interface. The servo drive, I / O interface module, welding power supply, and communication interface are housed in the control cabinet. The I / O interface module and communication interface are connected to a computer, and the welding power supply is connected to the welding torch. The servo drive and welding power supply are controlled by the electrical control system. The electrical control system uses an internal and external dual-circulation design to achieve a high IP54 protection rating. The welding power supply and welding torch employ push-pull wire spatter-free transition welding, which reduces spatter by more than 90% compared to traditional gas shielded welding. The ultra-low heat input welding process reduces heat input by 50% compared to traditional gas shielded welding, effectively reducing thermal deformation and weld defects. It has superior gap bridging capability. The electrical control system receives signals from the laser system in real time, collects and controls the current and voltage of the welding power supply, and feeds back the wire feeder's wire feeding speed and welding process parameters to the control system. The control system tracks the weld seam and adjusts its posture in real time, dynamically adjusting welding parameters to ensure the stability of the welding process and the consistency of welding quality.

[0017] The beneficial effects of this utility model are as follows: By changing the traditional aluminum single-panel welding and grinding production process, and combining existing production equipment with automated selection, modification, upgrading, and configuration, a fully automated aluminum single-panel welding and grinding production line is formed. The grinding robot of this utility model has a buoyancy control function, ensuring that the contact force between the grinding head and the workpiece is always equal to the set value, unaffected by workpiece size errors, robot posture, or abrasive wear, achieving high-quality grinding. The six-axis robotic arm of this utility model's arc welding robot precisely positions the welding position, allowing for flexible adjustment of the welding gun's posture and position to adapt to different welding positions and trajectories. After the production line of this utility model is put into operation, compared with the traditional production line, the number of workers is reduced from 12 to 1-2, and the annual production capacity increases from 280,000 square meters to 400,000 square meters, an increase of 42.9%. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the layout of the fully automated welding and grinding production line for aluminum single panels of this utility model; Figure 2 This is a schematic diagram of the control console equipment layout on the fully automated aluminum single-panel welding and grinding production line of this utility model; Figure 3 This is a schematic diagram of the arrangement of the feeding and transfer robotic arm equipment of this utility model; Figure 4 This is a schematic diagram of the laser welding station equipment layout of this utility model; Figure 5 This is a schematic diagram of the equipment layout of the automatic material turning machine of this utility model; Figure 6 This is a schematic diagram of the equipment layout for the grinding workstation of this utility model; Figure 7 This is a schematic diagram of the layout of the transfer and unloading robotic arm equipment of this utility model; In the diagram, 1 is the control console; 2 is the loading and transfer area; 3 is the laser welding station; 4 is the material turning area; 5 is the grinding workstation; 6 is the transfer and unloading area; 11 is the computer; 12 is the control system; 21 is the loading and transfer robot; 22 is the loading positioner; 31 is the automatic laser welding robot; 32 is the welding positioning worktable; 41 is the automatic material turning machine; 42 is the side pushing mechanism; 43 is the vacuum suction cup gripper; 44 is the limit stop; 51 is the automatic grinding robot; 52 is the grinding positioning worktable; 53 is the automatic grinding tool changer; 54 is the grinding dust removal room; and 61 is the transfer and unloading robot. Detailed Implementation

[0019] Figure 1 The diagram shown is a layout of a fully automated aluminum panel welding and grinding production line according to this embodiment. Along the production process flow, the production line in this embodiment includes a control console 1, a feeding and transfer area 2, a laser welding station 3, a turning area 4, a grinding workstation 5, and a transfer and unloading area 6.

[0020] The loading and transfer robot 21 is installed in the loading and transfer area 2 to load and weld aluminum panels at the welding station, and then transfer them to the turning area 4; the automatic laser welding robot 31 and the welding positioning workbench 32 are installed in the laser welding station 3 to weld the edges and corners of the aluminum panels and weld the reinforcing ribs and folded edges; the automatic turning machine 41 is installed in the turning area 4 to turn the aluminum panels over; the automatic grinding robot 51, the grinding positioning workbench 52, the automatic grinding tool changer 53, and the grinding dust removal room 54 are installed in the grinding workstation 5 to grind the weld feet and the surface of the aluminum panels; the transfer and unloading robot 61 is installed in the transfer and unloading area 6 to transfer the aluminum panels from the turning machine to the grinding station and unload the aluminum panels; the welding and grinding production line is controlled by the control system according to the production process flow to achieve fully automatic production.

[0021] Figure 2This is a schematic diagram of the equipment layout of a control console on a fully automated aluminum single-panel welding and grinding production line according to this utility model. The equipment includes a computer 11 and a control system 12, which are installed on the control console 1. The control system 12 includes a data bus, a control module, a production execution module, an industrial tablet HMI module, a programmable logic controller (PLC), and control software. The computer 11 is interconnected with each module and controller, and the control software is installed in the computer. The computer is connected to each piece of equipment on the production line via the data bus. The control system adopts a centralized architecture, integrating servo drive, Modbus TCP communication, and an industrial tablet HMI. It achieves production line equipment collaboration through modular design. It supports automatic / manual dual modes, has equipment activation permission management, and is equipped with dual interfaces of computer and industrial tablet for real-time monitoring of operating status, work order data, and alarm diagnosis. The PLC precisely controls the execution unit via a high-speed bus, integrates safety interlocking mechanisms such as emergency stop, and reserves an IoT interface. It has a built-in dedicated algorithm platform for welding and grinding: the welding robot is equipped with speed look-ahead, motion control, and vibration suppression algorithms to ensure high speed and high precision; the grinding robot is equipped with a force control system, supports automatic tool changing and gravity compensation, and ensures constant grinding pressure. Programming supports both graphical import and parameter editing modes, and includes a built-in material and process database. Work order management supports multi-task editing, drag-and-drop sorting, and automatic switching, with full traceability of production data.

[0022] Figure 3 The diagram shown illustrates the equipment layout of a feeding and transfer robot on a fully automated aluminum panel welding and grinding production line according to this embodiment. The production equipment includes a feeding and transfer robot 21 and a feeding positioner 22, installed in the feeding and transfer area 2. The feeding and transfer robot 21 includes a six-axis robotic arm, a vacuum suction cup, a floor rail, and the feeding positioner 22. The six-axis robotic arm and the floor rail work together to grasp and transfer aluminum panels through teach-in programming control. The vacuum suction cup picks up the panels, and the sheet-separating gripper, brush, and detector complete the sheet-separating and multi-sheet detection. The feeding positioner positions the panels and alarms when there is no material. The incoming materials must be neatly stacked and of the same type and orientation.

[0023] Figure 4 The diagram shows the equipment layout of the laser welding station on a fully automated aluminum panel welding and grinding production line according to this embodiment. The production equipment includes an automatic laser welding robot 31 and a welding positioning worktable 32, which are installed at the laser welding station 3.

[0024] The automated laser welding robot 31 includes a ground rail, an arc welding robot, an automatic torch cleaning and wire cutting device, and a laser system. The arc welding robot arm is mounted on the ground rail, the automatic torch cleaning and wire cutting device is mounted on the base of the arc welding robot, and the laser system is mounted next to the welding torch of the arc welding robot.

[0025] The arc welding robot includes a six-axis robotic arm, an electrical control system, a welding power source, a wire feeder, a welding torch, a shielding gas supply unit, and a ground rail. Equipped with anti-collision sensors, the robot utilizes the ground rail and six-axis robotic arm for precise positioning. The electrical control system and the overall control system work in deep collaboration, incorporating motion control and vibration suppression algorithms to achieve high-speed, high-precision welding with an IP54 protection rating. The welding power source employs new technologies such as push-pull wire welding with no spatter and ultra-low heat input, exhibiting strong gap bridging capabilities. The electrical control system can receive laser signals in real time and dynamically adjust welding parameters to ensure stable welding processes and consistent quality.

[0026] The laser system includes a laser emitter, a laser receiver target, a prism, and a controller. The laser system is installed next to the welding torch. After the robot reaches the preset position, it precisely guides the welding process and monitors information such as weld seam and penetration depth in real time. This information is then fed back to the control system for dynamic adjustments and compensation to improve welding quality.

[0027] The automatic torch cleaning and wire cutting device includes a torch cleaning and wire cutting mechanism, a material receiving assembly, and a controller. The automatic torch cleaning and wire cutting device is installed on the arc welding robot base and moves with it, maintaining a constant relative position to clean the welding torch at any time. It has functions of wire cutting, oil removal, slag removal, and nozzle grinding, which can remove welding slag and handle welding wire abnormalities, thereby improving welding quality.

[0028] The welding positioning workbench 32 includes a closed-loop electric cylinder centering transmission positioning servo and a pneumatic clamping fixture. After the loading and transfer robot transfers the aluminum plate to the workbench, the positioning servo completes the centering, and the pneumatic clamping fixture clamps it in place. The workbench uses a steel structure and fireproof heat insulation panels to ensure load-bearing capacity without deformation or burning. The positioning servo receives signals from the system for centering, and the displacement sensor detects the dimensions; an alarm is triggered if the deviation exceeds 0.5mm. The closed-loop electric cylinder provides high precision, high response, and anti-interference capabilities, allowing for repeated and accurate positioning to ensure production consistency and stable quality.

[0029] Figure 5 The diagram shows the equipment layout of an automatic material turning machine on a fully automated aluminum single-panel welding and grinding production line according to this embodiment. The production equipment includes an automatic material turning machine 41, installed in the turning area 4. The automatic material turning machine includes a side-pushing mechanism 42, a vacuum suction cup gripper 43, and a limit stop 44; the limit stop has a built-in sensor. The automatic material turning machine is integrated into the bottom of a five-speed variable frequency roller conveyor line. After the product is positioned by the limit stop, the sensor triggers the side-pushing mechanism to move it to the side, the vacuum suction cup gripper picks up the flipped surface, and then the robot arm picks up the lower surface to complete the flipping.

[0030] Figure 6The diagram shows the equipment layout of the grinding workstation on a fully automated aluminum panel welding and grinding production line according to this embodiment. The production equipment includes an automatic grinding robot 51, a grinding positioning worktable 52, an automatic grinding tool changer 53, and a grinding dust removal chamber 54; all of the above are installed in the grinding dust removal chamber 54 of the grinding workstation 5.

[0031] The grinding robot comprises a six-axis robotic arm, protective clothing, a pipeline package, a force-controlled grinding system, and a ground rail. The force-controlled grinding system includes a force-position compensator and dual electric grinding heads. The force-controlled grinding system works in deep collaboration with the control system, incorporating a built-in gravity compensation algorithm to automatically calculate and compensate for the gravity components of the grinding tool under different postures, ensuring precise force application. The grinding robot is flexibly positioned via the ground rail and the six-axis robotic arm, and is equipped with a high-precision reducer and dustproof, flame-retardant protective clothing. The force-position compensator adjusts in real time to maintain constant grinding pressure, unaffected by workpiece errors, posture, or abrasive wear, while simultaneously feeding data back to the control system for full recording and traceability. The dual electric grinding heads can switch between louvered blade and sandpaper modes.

[0032] The force-position compensator includes a sensing unit, an execution unit, a rotation unit, and a control unit. The force sensor of the sensing unit is installed between the grinding head and the spindle to detect the normal force between the grinding head and the workpiece in real time. The cylinder of the execution unit drives the spindle to achieve telescopic movement. The servo motor of the rotation unit drives the spindle to rotate through a coupling. The control unit completes data acquisition, algorithm calculation, and command output. When the detected normal force difference between the grinding head and the workpiece is less than a threshold, the compensator's execution mechanism quickly adjusts: the controller adjusts the output force of the cylinder, and the spindle slides in the bearing seat to achieve flexible floating of the grinding head.

[0033] The grinding and positioning worktable 52 includes a length-width aligning clamping and positioning servo, a dust collector, and a worktable. After the product is transferred to the steel structure worktable, the length-width aligning clamping and positioning servo completes the clamping and positioning. The positioning servo adopts a high-precision closed-loop electric cylinder, which has high dynamic response and anti-interference capabilities, and can repeatedly and accurately position, ensuring production consistency and quality stability. The dust collector at the bottom of the worktable collects grinding dust to avoid affecting the operation of the equipment.

[0034] The automatic grinding tool changer adopts a sheet metal frame structure and has a storage capacity for more than two hours of use. It is equipped with a louvered blade and a sandpaper dual tool magazine for independent automatic replacement. It is equipped with an in-situ sensor to monitor the replacement status and a low inventory alarm, and is equipped with an automatic opening and closing dust cover to prevent contamination.

[0035] The grinding dust collection chamber includes a dust collection room and a dust collection device. The dust collection room adopts a frame-type sheet metal welded structure, with louvered ventilation at the top and dust extraction at the bottom. A dust collector below the workbench is connected to a sealed pipe, and negative pressure is maintained inside when the roller shutter door is closed to prevent dust overflow. It is equipped with a system-controlled automatic roller shutter door (which can also be manually operated) and a rear safety manual door. The interior houses the grinding robot, workbench, and tool changer. Wet dust collection is used, with built-in spray, filter media, filter balls, and a silencer. It is equipped with a water shortage alarm, an explosion-proof fan, and an electrical control box.

[0036] Figure 7 The diagram shows the equipment layout of a transfer and unloading robot on a fully automated aluminum panel welding and grinding production line according to this embodiment. The production equipment includes a transfer and unloading robot 61, installed in the transfer and unloading area 6. The transfer and unloading robot includes a six-axis robotic arm, a vacuum suction cup, and a floor rail.

[0037] The transfer and unloading robot consists of a six-axis robotic arm and a ground rail. It is controlled by teach programming, uses a vacuum suction cup to pick up the sheet material and has the function of sheet material detection. It is responsible for the flipping, transfer and unloading of aluminum single panels.

Claims

1. A fully automated welding and grinding production line for aluminum single panels, characterized in that, The equipment in the production line includes a control system, a feeding and transfer robot, a feeding positioner, an automatic laser welding robot, a welding positioning workbench, an automatic material turning machine, an automatic grinding robot, a grinding positioning workbench, an automatic grinding tool changer, a grinding dust removal room, and a transfer and unloading robot. All the equipment for the automated production of aluminum single-panel welding and grinding is installed on the fully automatic aluminum single-panel welding and grinding production line. The aluminum single-panel welding and grinding production line includes a control console, a feeding and transfer area, a laser welding station, a turning area, a grinding workstation, and a transfer and unloading area according to the production process flow. The control system is installed on the control console. The feeding and transfer robot and the feeding positioner are installed in the feeding and transfer area. The automatic laser welding robot and the welding positioning workbench are installed in the laser welding station. The automatic turning machine is installed in the turning area. The automatic grinding robot, the grinding positioning workbench, the automatic grinding tool changer, and the grinding dust removal room are installed in the grinding workstation. The transfer and unloading robot is installed in the transfer and unloading area.

2. The fully automated welding and grinding production line for aluminum single panels according to claim 1, characterized in that, The control system includes a computer, a PLC programmable logic controller, a memory, a data bus, and control software; a force-controlled grinding system is configured for the automatic grinding robot; the force-controlled grinding system includes a force-position compensator and dual electric grinding heads; the force-position compensator includes a sensing unit, an execution unit, a rotation unit, and a control unit; the sensing unit is a force sensor installed between the grinding head and the spindle to detect the normal force between the grinding head and the workpiece in real time; the cylinder of the execution unit drives the spindle to achieve telescopic movement; the servo motor of the rotation unit drives the spindle to rotate through a coupling; the control unit completes data acquisition, algorithm calculation, and command output.

3. The fully automated welding and grinding production line for aluminum single panels according to claim 1, characterized in that, The automatic laser welding robot includes a ground rail, an arc welding robot, an automatic torch cleaning and wire cutting device, and a laser guiding system. The arc welding robot is installed on the ground rail, the automatic torch cleaning and wire cutting device is installed on the base of the arc welding robot, and the laser guiding system is installed next to the welding torch of the arc welding robot arm. The arc welding robot includes a six-axis robotic arm, anti-collision sensors, an electronic control system, a welding power source, a wire feeder, a welding torch, and a shielding gas supply unit. The arc welding robot is equipped with anti-collision sensors, providing flexible anti-collision functionality. The arc welding robot drives the six-axis robotic arm in reciprocating motion on a ground track. Under the control of the electronic control system, the six-axis robotic arm precisely positions the welding location and flexibly adjusts the welding torch's posture and position. The welding power source connects to the welding torch and provides it with a large current. The shielding gas supply unit provides inert gas protection for the welding torch. Under the control of the electronic control system, the wire feeder continuously supplies welding wire to the welding torch. The laser guidance system includes a laser emission source, a laser receiving target, and a controller. The laser guidance system is installed next to the welding gun of the arc welding robot. After the arc welding robot moves to the designated position according to a preset path, the laser guidance system precisely guides it to the welding position to perform the welding action. In addition to picking up the welding position, the laser guidance system can also detect the weld condition in real time during the welding process and feed the detection results back to the control system. The control system makes real-time dynamic adjustments and compensations based on the feedback information to improve welding quality. The automatic torch cleaning and wire cutting device includes a torch cleaning and wire cutting mechanism, a material receiving assembly, and a controller. The automatic torch cleaning and wire cutting device is mounted on the base of the arc welding robot and moves with the robot, facilitating the robot's constant torch cleaning. It removes welding slag from the inner wall of the torch, addresses issues such as excessively short or long welding wires, or spherical ends, and improves welding quality. It features wire cutting, oil removal, slag removal, and nozzle outer surface polishing functions. The controller controls the operation of the torch cleaning and wire cutting mechanism. The welding positioning workbench includes a closed-loop electric cylinder centering transmission positioning servo and a pneumatic clamping fixture. After the aluminum single-panel material is transported to the workbench by the loading and transfer robot, the centering is completed by the closed-loop electric cylinder centering transmission positioning servo and the pneumatic clamping fixture. The positioning workbench adopts a steel structure and is covered with fireproof and heat-insulating board on the table surface. The closed-loop electric cylinder centering transmission positioning servo receives signals from the system to perform centering and positioning, and the displacement sensor detects the workpiece size. If the deviation is >0.5mm, an alarm is triggered.

4. The fully automated welding and grinding production line for aluminum single panels according to claim 1, characterized in that, The automatic material turning machine includes a side push mechanism, a vacuum suction cup gripper, and a limit stop; the automatic material turning machine is installed on the roller conveyor line and located at the bottom of the conveyor line; the limit stop is installed at the tail and has a built-in sensor. The side-pushing mechanism is installed on the side of the conveyor line, and the vacuum suction cup gripper is installed at the lower end of the conveyor line; the roller conveyor line with frequency converter has five speed settings; after the product is transported to the bottom of the conveyor line and blocked by the limit stop, the sensor inside the limit stop synchronously identifies the product and starts the side-pushing mechanism on the side of the conveyor line to push the product to the side, and the vacuum suction cup gripper at the bottom picks it up and flips it up. Then, the transfer and unloading robot picks up the lower surface to complete the flipping action.

5. The fully automated welding and grinding production line for aluminum single panels according to claim 3, characterized in that, The electrical control system includes a control cabinet, a servo drive, an I / O interface module, a welding power supply, and a communication interface. The servo drive, I / O interface module, welding power supply, and communication interface are located in the control cabinet. The I / O interface module and communication interface are respectively connected to a computer. The welding power supply is connected to the welding gun. The servo drive and welding power supply are controlled by the electrical control system.

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