A total rear floor assembly welding and gluing flexible integrated workstation

Abstract

This invention discloses a flexible integrated workstation for welding and gluing of the rear subframe assembly, belonging to the field of automotive manufacturing automation equipment technology. It includes a base, a positioner, and a six-axis robotic arm. The six-axis robotic arm is fixedly mounted on the base, and a connecting column is fixedly connected to the output end of the robotic arm. A quick-connect assembly is fixedly connected to the bottom end of the connecting column, and a quick-connect connector is installed within the quick-connect assembly. A blowing assembly and a dust extraction and filtration assembly are symmetrically arranged on the connecting column, and a position changing assembly is also provided on the connecting column. This invention, by setting up the quick-connect assembly and quick-connect connector, achieves rapid and automatic replacement of the welding head and the gluing head, improving the workstation's flexibility to adapt to different processes. The blowing assembly, dust extraction and filtration assembly, and position changing assembly can clean the weld seam or lap surface by blowing, and after gluing, can also quickly surface dry or preheat the glue line. The dust extraction and filtration assembly provides graded purification of welding fumes.

Description

Technical Field

[0001] This invention belongs to the field of automotive manufacturing automation equipment technology, specifically relating to a flexible integrated workstation for welding and gluing the rear floor assembly. Background Technology

[0002] In automobile body manufacturing, welding and adhesive application of the rear floor assembly (including the rear floor, rear longitudinal beams, and crossbeams) are critical process steps. In traditional production models, welding and adhesive application processes are typically separated into different workstations, performed by different automated equipment (such as welding robots and adhesive application robots). Workpieces need to move between these workstations, increasing equipment investment and workshop space requirements, extending production cycle time, and reducing overall efficiency. Furthermore, the high-temperature fumes and spatter generated during welding, as well as the cleaning requirements for welds or lap joints before adhesive application, often necessitate additional auxiliary equipment or manual intervention.

[0003] In existing technologies, some integrated solutions attempt to integrate welding and gluing functions into a single robotic arm, but they typically suffer from the following shortcomings: 1. The replacement of welding guns and glue guns relies on manual labor or complex gun-changing discs, resulting in low automation and poor flexibility; 2. There is a lack of effective treatment for welding fumes, affecting the working environment and equipment lifespan; 3. The pre-application cleaning function is simple, making it difficult to adapt to complex weld structures, and it cannot quickly surface dry or preheat the glue line after application, affecting the quality of the glue application.

[0004] Therefore, there is an urgent need for a highly integrated, flexible workstation with automatic gun changing, smoke and dust handling, and intelligent purging functions. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a flexible integrated workstation for welding and gluing the rear base plate assembly.

[0006] The technical solution adopted to solve the above-mentioned technical problems is: a flexible integrated workstation for welding and gluing of the rear base plate assembly, including a base, a positioner, and a six-axis robotic arm. The six-axis robotic arm is fixedly installed on the base. A connecting column is fixedly connected to the output end of the six-axis robotic arm. A quick-connect assembly is fixedly connected to the bottom end of the connecting column. A quick-connect connector is quickly installed and removed from the quick-connect assembly. There are two quick-connect connectors, and the two quick-connect connectors are respectively equipped with a welding head and a gluing head. A blowing assembly and a dust suction and filter assembly are symmetrically arranged on the connecting column. The blowing assembly blows the welding or gluing area, and the dust suction and filter assembly filters the fumes generated during the welding of the base plate assembly. The connecting column is also equipped with an orientation transformation assembly that drives the blowing assembly and the dust suction and filter assembly to rotate around the quick-connect assembly. At least two placement racks for supporting quick-connect connectors are fixedly connected to the base.

[0007] Furthermore, the quick-connect assembly includes a connecting shell fixed to the bottom end of the connecting post. The bottom end of the connecting shell has an assembly groove. An electric cylinder is fixedly connected to the outer side wall of the connecting shell. Locking push rods are slidably connected to the inner walls of both sides of the assembly groove. One end of the locking push rod is fixedly connected to the output end of the electric cylinder. The outer side wall of the locking push rod has two limiting protrusions along its circumference.

[0008] Furthermore, the quick-connect connector includes a Z-shaped connector and a locking plate. The bottom sidewall of the Z-shaped connector is fixedly connected to the locking plate by bolts. The Z-shaped connector and the locking plate are clamped and fitted with a welding head or an adhesive applicator. The top of the Z-shaped connector is machined with a connector head. The top of the connector head has two protrusions. The sidewall of the protrusion has a through-hole. The top of the protrusion has an opening. The diameter of the opening is adapted to the diameter of the locking push rod. The locking hole is adapted to the diameter of the limiting protrusion. The length of the limiting protrusion is less than the distance between the two protrusions.

[0009] With the above technical solution, when the connector is inserted into the assembly slot, the locking push rod first passes through the opening for initial positioning, and then pushes the locking push rod horizontally so that the limiting protrusion is engaged in the locking hole to complete the locking. This enables the quick and automatic replacement of welding heads or gluing heads, allowing the same quick connector to be compatible with welding heads or gluing heads of different brands and specifications. This expands the workstation's compatibility with third-party tools and improves flexible production efficiency.

[0010] Furthermore, the blower assembly includes a Z-shaped connecting plate and a blower. An electric cylinder is vertically fixed to the bottom end of the Z-shaped connecting plate. A fixed frame is fixed to the bottom end of the movable rod of the electric cylinder. Rotating frames are rotatably connected to the inner walls of both sides of the fixed frame. A servo motor is fixed to the side wall of the fixed frame. The output end of the servo motor is fixedly connected to one side of the rotating frame. A nozzle is installed on the rotating frame. A connecting pipe is connected through the blower and the nozzle. A limit hole is opened at the bottom end of the Z-shaped connecting plate. The connecting pipe passes through the limit hole. An electromagnetic heating coil is installed in the air outlet of the blower.

[0011] Through the above technical solutions, the electric cylinder 2 realizes the lifting and lowering of the nozzle, the servo motor 1 drives the rotating frame to rotate, realizes the adjustment of the nozzle pitch angle, and with the circumferential rotation of the orientation transformation component, the nozzle can point to any direction in space. One set of blower mechanism covers all process postures; the electromagnetic heating coil can heat the airflow to avoid welding pores or glue bubbling. After the glue is applied, the hot air accelerates the surface drying of the glue and shortens the cycle time.

[0012] Furthermore, the dust collection and filtration assembly includes a storage box and an L-shaped connecting plate. The storage box is fixed to the side wall of the six-axis robotic arm. A dust collection hopper is obliquely fixed to the bottom end of the L-shaped connecting plate. An exhaust fan is installed through the side wall of the storage box. An air supply pipe is connected through the dust collection hopper and the exhaust fan. A pull-out frame is pulled out inside the storage box. The top of the storage box and the top of the pull-out frame are fixed together and disassembled by a locking buckle. The inner walls of both sides of the pull-out frame are provided with a stop block, a partition, and a slot from bottom to top. A collection drawer is pulled out below the stop block. A filter cartridge is threaded through the bottom end of the partition. An activated carbon plate is slidably connected in the slot. An air outlet is opened at the top of the pull-out frame. The exhaust fan is positioned corresponding to the filter cartridge.

[0013] Through the above technical solution, the smoke and dust drawn in by the exhaust fan first undergoes inertial settling of large particles of welding slag in the dust collection hopper, then passes through the filter cartridge to filter fine dust, and finally the filtered gas is discharged as clean air through the exhaust port after being drawn in by the activated carbon plate, directly meeting the emission standards in the workshop and saving the high investment of the central dust collection system.

[0014] Furthermore, the orientation transformation component includes a rotating disk and a fixed disk. The sidewall of the rotating disk is fixedly connected to the top of the Z-shaped connecting plate and the L-shaped connecting plate. A toothed ring is fixedly connected to the top of the rotating disk. The inner sidewall of the toothed ring is rotatably connected to the outer sidewall of the connecting column. The inner sidewall of the fixed disk is fixedly connected to the outer sidewall of the connecting column. A second servo motor is fixedly connected to the top of the fixed disk. A gear is fixedly connected to the output end of the second servo motor. The gear meshes with the toothed ring.

[0015] With the above technical solution, when the robotic arm performs welding or gluing on complex spatial trajectories, the air blowing port and dust suction port can be arranged in the most advantageous position to avoid interference with the workpiece, achieve dynamic following, and improve the efficiency of dust collection and blowing effect.

[0016] Furthermore, the top of the placement rack is provided with a trapezoidal limiting groove, which is adapted to the shape of the quick-connect connector, and the bottom of the trapezoidal limiting groove is provided with a storage cavity.

[0017] Through the above technical solution, the side wall of the Z-type connector is automatically guided and aligned with the trapezoidal limiting groove, and the Z-type connector is positioned and locked to ensure that the connector of the quick-connect joint is always kept at a fixed angle, and to ensure that the quick-connect component and the connector are accurately connected.

[0018] Furthermore, the welding head is connected to an external welding system, and the glue applicator is connected to an external glue supply system.

[0019] The beneficial effects of this invention are as follows: (1) By setting up quick-connect components and at least two quick-connect connectors placed on the base, and with the automatic positioning of the six-axis robotic arm and the locking and unlocking action of the electric cylinder, the welding head and the glue application head can be quickly and automatically replaced without manual intervention or complicated gun changing disc. This significantly improves the workstation's flexibility to adapt to two different processes, welding and glue application, shortens the production cycle, and reduces equipment investment and floor space. (2) By symmetrically setting the blowing component and the dust collection and filtration component, and driving the two to rotate around the quick-connect component by the orientation transformation component, the dust collection and filtration component can be directed to the area where the smoke and dust are generated during welding to perform efficient filtration and collection, thereby improving the working environment; before applying the adhesive, the blowing component can be used to blow and clean the weld or lap surface at an adjustable angle and height; after applying the adhesive, the electromagnetic heating coil can be used to quickly dry or preheat the adhesive line, thereby effectively improving the adhesive quality and process stability. (3) Through the multi-stage filtration structure of the dust collection and filtration assembly, including the pull-out rack, filter cartridge, activated carbon plate and collection drawer, the particulate matter and harmful gases in the welding fume are purified in stages, and it is easy to clean and maintain daily. At the same time, through the meshing transmission of gears and gear rings in the orientation transformation assembly, the blowing assembly and dust collection and filtration assembly can be adjusted in circumferential position independently of the posture of the robotic arm, which further optimizes the directionality of blowing and dust removal and improves the overall automation and intelligence level of the workstation. Attached Figure Description

[0020] Figure 1 This is a perspective view of a flexible integrated workstation for welding and gluing a rear base plate assembly according to the present invention. Figure 2 This is a three-dimensional view of a six-axis robotic arm of a flexible integrated workstation for welding and gluing a rear base plate assembly according to the present invention. Figure 3 This is a cross-sectional view of the quick-connect component locking state of a flexible integrated workstation for welding and gluing a rear base plate assembly according to the present invention. Figure 4 This is a cross-sectional view of the unlocked state of the quick-connect component of a flexible integrated workstation for welding and gluing a rear base plate assembly according to the present invention. Figure 5 This is a perspective view of the welding head and the adhesive application head of a flexible integrated workstation for welding and applying adhesive to a rear base plate assembly according to the present invention. Figure 6 This is a structural diagram of the blower assembly of a flexible integrated workstation for welding and gluing a rear base plate assembly according to the present invention; Figure 7 This is a structural diagram of the dust collection and filtration component of a flexible integrated workstation for welding and gluing a rear base plate assembly according to the present invention. Figure 8 This is a structural diagram of the orientation transformation component of a flexible integrated workstation for welding and gluing a rear base plate assembly according to the present invention. Figure 9 This is a perspective view of the placement frame of a flexible integrated workstation for welding and gluing a rear base plate assembly according to the present invention.

[0021] Reference numerals: 1. Positioner; 2. Base; 3. Six-axis robotic arm; 4. Connecting column; 5. Quick-connect assembly; 6. Quick-connect connector; 7. Blowing assembly; 8. Dust suction and filter assembly; 9. Orientation conversion assembly; 10. Placement rack; 11. Welding head; 12. Glue applicator; 501. Connecting shell; 502. Assembly slot; 503. Electric cylinder one; 504. Locking push rod; 505. Limiting protrusion; 601. Z-type connector; 602. Locking plate; 603. Connector; 604. Protrusion; 605. Locking hole; 606. Opening; 701. Z-type connecting plate; 702. Electric cylinder two; 703. Fixing frame; 704. Rotating frame 705. Servo Motor 1; 706. Nozzle; 707. Hair dryer; 708. Connecting pipe; 709. Electromagnetic heating coil; 710. Limiting hole; 801. Storage box; 802. L-shaped connecting plate; 803. Pull-out rack; 804. Partition; 805. Filter cartridge; 806. Stop block; 807. Collection drawer; 808. Slot; 809. Activated carbon plate; 810. Air outlet; 811. Exhaust fan; 812. Dust collection hopper; 813. Air supply pipe; 901. Rotary disc; 902. Gear ring; 903. Fixed disc; 904. Servo Motor 2; 905. Gear; 1001. Trapezoidal limiting groove; 1002. Storage cavity. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] like Figures 1-9 As shown, this embodiment of a flexible integrated workstation for welding and gluing a rear base plate assembly includes a base 2, a positioner 1, and a six-axis robotic arm 3. The six-axis robotic arm 3 is fixedly mounted on the base 2. A connecting column 4 is fixedly connected to the output end of the six-axis robotic arm 3. A quick-connect assembly 5 is fixedly connected to the bottom end of the connecting column 4. A quick-connect connector 6 is installed and disassembled within the quick-connect assembly 5. There are two quick-connect connectors 6, and the two quick-connect connectors 6 are respectively equipped with a welding head 11 and a gluing head 12. A blowing assembly 7 and a dust suction and filter assembly 8 are symmetrically arranged on the connecting column 4. The blowing assembly 7 blows the welding or gluing area, and the dust suction and filter assembly 8 filters the fumes generated during the welding of the base plate assembly. The connecting column 4 is also provided with an orientation transformation assembly 9 that drives the blowing assembly 7 and the dust suction and filter assembly 8 to rotate around the quick-connect assembly 5. At least two placement racks 10 for supporting the quick-connect connectors 6 are also fixedly connected to the base 2.

[0024] like Figure 3 , Figure 4 As shown, the quick-connect assembly 5 includes a connecting shell 501 fixed to the bottom of the connecting post 4. The bottom of the connecting shell 501 is provided with an assembly groove 502. An electric cylinder 503 is fixedly connected to the outer side wall of the connecting shell 501. Locking push rods 504 are slidably connected to the inner walls of both sides of the assembly groove 502. One end of the locking push rod 504 is fixedly connected to the output end of the electric cylinder 503. The outer side wall of the locking push rod 504 is provided with two limiting protrusions 505 along the circumference. The quick-connector 6 includes a Z-shaped connector 601 and a locking plate 602. The bottom sidewall of the Z-shaped connector 601 is fixedly connected to the locking plate 602 by bolts. The Z-shaped connector 601 and the locking plate 602 are clamped and fitted with a welding head 11 or an adhesive applicator 12. The top of the Z-shaped connector 601 is machined with a connector 603. The top of the connector 603 is provided with two protrusions 604. The sidewall of the protrusion 604 is provided with a locking hole 605. The top of the protrusion 604 is provided with an opening 606. The diameter of the opening 606 is adapted to the diameter of the locking push rod 504. The diameter of the locking hole 605 is adapted to the diameter of the limiting protrusion 505. The length of the limiting protrusion 505 is less than the distance between the two protrusions 604. An electric cylinder 503 drives a locking push rod 504. The locking push rod 504 is equipped with two limiting protrusions 505, which cooperate with the locking holes 605 and openings 606 on the two protrusions 604 at the top of the quick connector 6. When the connector 603 is inserted into the assembly slot 502, the locking push rod 504 first passes through the opening 606 for initial positioning, and then pushes the locking push rod 504 to move laterally, so that the limiting protrusions 505 are engaged in the locking holes 605 to complete the locking. This provides higher shear resistance and torsional stiffness, fully meets the requirements of high-frequency vibration during welding and stable trajectory during glue application, and avoids welding deviation or glue line twisting caused by tool head shaking during operation. At the same time, it enables rapid and automatic replacement of welding head 11 or glue application head 12, so that the same quick connector 6 can be adapted to welding head 11 or glue application head 12 of different brands and specifications, expanding the workstation's compatibility with third-party tools and improving flexible production efficiency. The spacing between the two protrusions 604 is fixed and greater than the length of the limiting protrusion 505, allowing the quick-connect connector 6 to have an insertion error of ±1mm in the Z direction, which reduces the stringent requirements for the repeatability accuracy of the robotic arm and significantly reduces the number of downtime calibrations.

[0025] like Figure 6As shown, the blower assembly 7 includes a Z-shaped connecting plate 701 and a blower 707. An electric cylinder 702 is vertically fixed to the bottom end of the Z-shaped connecting plate 701. A fixed frame 703 is fixed to the bottom end of the movable rod of the electric cylinder 702. A rotating frame 704 is rotatably connected to the inner walls of both sides of the fixed frame 703. A servo motor 705 is fixed to the side wall of the fixed frame 703. The output end of the servo motor 705 is fixedly connected to one side of the rotating frame 704. A nozzle 706 is installed on the rotating frame 704. A connecting pipe 708 is connected through the blower 707 and the nozzle 706. A limit hole 710 is opened at the bottom end of the Z-shaped connecting plate 701. The connecting pipe 708 passes through the limit hole 710. An electromagnetic heating coil 709 is installed in the air outlet of the blower 707. Electric cylinder 702 raises and lowers nozzle 706, servo motor 705 drives rotating frame 704 to rotate, achieving pitch angle adjustment of nozzle 706. With the circumferential rotation of orientation conversion component 9, nozzle 706 can point to any direction in space, allowing shielding gas or dust removal to be blown obliquely downwards during welding, horizontal blowing to sweep the base surface during adhesive application, and vertical blowing to cool after spot welding. One blower mechanism covers all process postures. Electromagnetic heating coil 709 can heat the airflow. In winter or humid environments, hot air can dry condensation or oil film on the base plate surface, avoiding welding porosity or adhesive blistering. After adhesive application, hot air accelerates the surface drying of the adhesive, shortening the cycle time.

[0026] like Figure 7 As shown, the dust collection and filtration assembly 8 includes a storage box 801 and an L-shaped connecting plate 802. The storage box 801 is fixed to the side wall of the six-axis robotic arm 3. A dust collection hopper 812 is obliquely fixed to the bottom end of the L-shaped connecting plate 802. An exhaust fan 811 is installed through the side wall of the storage box 801. An air supply pipe 813 is connected through the dust collection hopper 812 and the exhaust fan 811. A pull-out bracket 803 is pulled out inside the storage box 801. The top of the storage box 801 is connected to the pull-out bracket. The top of the rack 803 is fixed by a latch. The inner walls of both sides of the pull-out rack 803 are provided with a stop block 806, a partition 804, and a slot 808 from bottom to top. A collection drawer 807 is pulled out below the stop block 806. A filter cartridge 805 is threaded through the bottom of the partition 804. An activated carbon plate 809 is slidably connected in the slot 808. An air vent 810 is opened at the top of the pull-out rack 803. The exhaust fan 811 is positioned corresponding to the filter cartridge 805. The filter cartridge 805 uses a PTFE membrane filter element to ensure filtration accuracy; the latch uses a stainless steel buckle, with the male and female latches installed on the top of the storage box 801 and the top of the pull-out rack, respectively, for easy disassembly and maintenance. The fumes drawn in by the exhaust fan 811 first undergo inertial settling of large welding slag particles in the dust collection hopper 812, and then pass through the filter cartridge 805 (0.3μm) for filtration of fine dust. The filtered particles fall into the collection drawer 807 by gravity. The filtered gas is then adsorbed by the activated carbon plate 809 to remove VOCs such as formaldehyde and benzene series compounds, and finally discharged as clean air through the exhaust port 810, directly meeting the emission standards in the workshop and saving the high investment of a central dust collection system. The pull-out rack 803 can be pulled out from the storage box 801 by unlocking the latch. Moreover, the filter cartridge 805, activated carbon plate 809, and collection drawer 807 are all independent modules, allowing operators to replace the filter cartridge 805 while the workstation is running, without stopping the production line and improving the overall efficiency of the equipment.

[0027] like Figure 8 As shown, the orientation transformation component 9 includes a rotating disk 901 and a fixed disk 903. The side wall of the rotating disk 901 is fixedly connected to the top of the Z-shaped connecting plate 701 and the L-shaped connecting plate 802. A toothed ring 902 is fixedly connected to the top of the rotating disk 901. The inner side wall of the toothed ring 902 is rotatably connected to the outer side wall of the connecting column 4. The inner side wall of the fixed disk 903 is fixedly connected to the outer side wall of the connecting column 4. A servo motor 904 is fixedly connected to the top of the fixed disk 903. A gear 905 is fixedly connected to the output end of the servo motor 904. The gear 905 meshes with the toothed ring 902. In the robot simulation software, based on the 3D model of the workpiece and the path of the robotic arm, it is pre-detected whether the blowing component 7 and the dust collection and filtering component 8 will collide with the workpiece, fixture or placement rack 10 at different rotation angles. A collision-free rotation angle range is assigned to each critical path point. During operation, the control cabinet will calculate the safe angle range of the blowing component 7 and the dust collection and filtering component 8 in real time based on the current posture of the robotic arm. The orientation transformation component 9 is restricted to rotating only within this safe range. Once the desired angle exceeds the range, the control cabinet will first adjust the trajectory of the robotic arm end to meet the desired angle. If it cannot be adjusted, it will automatically select the value closest to the desired angle within the safe range. When adjusting the angle, the servo motor 904 drives the gear 905 to rotate, which in turn drives the rotating disk 901 through meshing with the gear ring 902. This allows the blowing assembly 7 and the dust collection and filtering assembly 8 to rotate continuously around the connecting column 4 independently of the joint movement of the six-axis robotic arm 3. When the robotic arm is performing welding or gluing on complex spatial trajectories, the blowing port and dust collection port can be positioned in the most advantageous location to avoid interference with the workpiece and achieve dynamic following. The operating angle can be optimized without moving the robotic arm body, improving the dust collection efficiency and blowing effect. The gear 905 directly drives the large-diameter gear ring 902, and the output torque is sufficient to resist the reaction force of the blowing pipe. The rotating disk 901 is located in the middle of the connecting column 4. Compared with the end suspension method, it moves the center of gravity of the component upward, reduces the off-center load torque of the six-axis robotic arm 3, and extends the joint life.

[0028] like Figure 9 As shown, a trapezoidal limiting groove 1001 is provided at the top of the placement rack 10. The trapezoidal limiting groove 1001 is adapted to the shape of the quick connector 6. A storage cavity 1002 is provided at the bottom of the trapezoidal limiting groove 1001. The trapezoidal limiting groove 1001 and the Z-shaped structure of the quick-connect connector 6 are designed to automatically guide and align the Z-shaped connector 601 with the trapezoidal limiting groove 1001 when the robotic arm inserts the welding head 11 or the gluing head 12 into the placement frame 10. This positioning and locking of the Z-shaped connector 601 ensures that the connector head 603 of the quick-connect connector 6 is always kept at a fixed angle, ensuring precise docking between the quick-connect assembly 5 and the quick-connect connector 6. The bottom storage cavity 1002 provides space for storing the welding head 11 or the gluing head 12. When changing the tool, the orientation conversion component 9 automatically rotates the blowing component 7 and the dust suction and filter component 8 to the side perpendicular to the robotic arm body to avoid interference with the spare tool head on the placement rack 10.

[0029] like Figure 1 As shown, welding head 11 is connected to the external welding system, glue applicator 12 is connected to the external glue supply system, and electric cylinder 1 503, electric cylinder 2 702, servo motor 1 705, blower 707, electromagnetic heating coil 709, exhaust fan 811, and servo motor 2 904 are electrically connected to the external control cabinet. The control cabinet coordinates the actions of all actuators to achieve fully automated closed-loop control of processes such as welding, gluing, gun changing, blowing, dust extraction, and heating. It enables centralized automatic control of each moving part and can automatically switch tools, adjust the blowing angle, and control heating and dust extraction according to process requirements, forming a fully automated flexible workstation and improving the stability and intelligence level of the workstation operation.

[0030] The working principle of this embodiment is as follows: After starting the workstation, the operator clamps the workpiece of the rear base plate assembly to be welded and coated with glue on the positioner 1. The positioner 1 adjusts the workpiece to the optimal working posture according to the program instructions. The control cabinet selects the appropriate tool based on the current process requirements, either welding first or applying glue first. If welding is required, the six-axis robotic arm 3 moves to the top of the placement frame 10, aligning the quick-connect assembly 5 with the quick-connect connector 6 on which the welding head 11 is placed. The robotic arm slowly descends, and the connector 603 at the top of the quick-connect connector 6 is inserted into the assembly slot 502 of the connecting shell 501. During the insertion process, the locking push rod 504 first passes through the opening 606 on the two protrusions 604. Then, the control cabinet commands the electric cylinder 503 to drive the locking push rod 504 to move laterally, so that the two limiting protrusions 505 on the locking push rod 504 respectively engage in the locking holes 605 on the side walls of the two protrusions 604, thus completing the rigid locking. At this time, the welding head 11 is fixedly connected to the six-axis robotic arm 3. Similarly, when it is necessary to switch to the glue application head 12, the robotic arm first moves to the placement rack 10, unlocks the current tool and places it in the empty trapezoidal limit slot 1001, and then grabs another quick connector 6 equipped with the glue application head 12 in the same steps. After grasping the welding head 11, the six-axis robotic arm 3 welds the workpiece according to a predetermined trajectory. Simultaneously, the control cabinet calculates the collision-free rotation angle range of the blowing assembly 7 and the dust collection and filtering assembly 8 in real time based on the spatial coordinates of the welding path points. It then instructs the servo motor 904 to drive the gear 905, which in turn rotates the gear ring 902 and the rotating disk 901. This causes the nozzle 706 of the blowing assembly 7 to point towards the area to be welded in front of the molten weld pool, and the dust collection hopper 812 of the dust collection and filtering assembly 8 to align with the source of welding fumes. The electric cylinder 702 adjusts the nozzle 706. 6. The servo motor 705 adjusts the pitch angle of the nozzle 706, so that the compressed air or protective gas blows the welding base at the best angle to remove oil and moisture. If the ambient humidity is high or the temperature is low, the control cabinet turns on the electromagnetic heating coil 709 to output hot air to dry the surface of the workpiece. The welding fumes are sucked into the dust collection hopper 812 by the negative pressure generated by the exhaust fan 811. Large particles of welding slag are inertially settled into the collection drawer 807, and fine dust is filtered by the filter cartridge 805. The exhaust gas is adsorbed by the activated carbon plate 809 and then discharged as clean air from the air outlet 810. When the welding process is completed, the control cabinet automatically switches to the glue application head 12. When running along the glue application trajectory, the blowing component 7 switches to the horizontal blowing mode to remove the floating dust on the glue application path. After the glue application is completed, the hot air blows onto the glue line surface again to accelerate the surface drying of the glue. During the entire welding and glue application process, the orientation change component 9 can dynamically adjust the circumferential position of the blowing nozzle and the dust suction nozzle according to the posture of the robotic arm to ensure that it never hits the workpiece or the fixture and maintains the optimal working angle. When a tool needs to be changed again, the control cabinet first instructs the orientation change component 9 to rotate the blowing component 7 and the dust extraction and filtering component 8 to the side perpendicular to the robotic arm body to avoid interference with the spare tool head on the placement rack 10. Then, the robotic arm sends the current tool back to the corresponding trapezoidal limit groove 1001 of the placement rack 10. The electric cylinder 503 drives the locking push rod 504 in the reverse direction to make the limit protrusion 505 exit the locking hole 605. The quick connector 6 remains on the placement rack 10. The robotic arm rises away and moves to another tool position to grab a new tool and continue the subsequent operation. During continuous operation of the production line, when it is necessary to clean or replace the filter cartridge 805 and activated carbon plate 809, simply open the latch, pull out the pull-out frame 803 from the storage box 801, and replace each module independently. The entire replacement process does not require stopping the operation of the six-axis robotic arm 3, and the overall efficiency of the equipment is maintained. The control cabinet records the number of actions, temperature rise, current and other status parameters of each actuator throughout the process. When an abnormality is detected (such as overload of electric cylinder 503, blockage of filter cartridge 805 causing a drop in negative pressure, or overheating of electromagnetic heating coil 709), it will automatically alarm and suspend the relevant process, waiting for manual intervention. The entire workstation realizes flexible and automated operation of the entire process from workpiece clamping, automatic tool changing, welding / gluing, auxiliary blowing and dust removal to tool reset and storage.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A flexible integrated workstation for welding and gluing a rear base plate assembly, comprising a base (2), a positioner (1), and a six-axis robotic arm (3), characterized in that: The six-axis robotic arm (3) is fixedly installed on the base (2). The output end of the six-axis robotic arm (3) is fixedly connected to a connecting column (4). The bottom end of the connecting column (4) is fixedly connected to a quick-connect assembly (5). The quick-connect assembly (5) contains a quick-connect connector (6) that can be quickly installed and removed. There are two quick-connect connectors (6), and the two quick-connect connectors (6) are respectively equipped with a welding head (11) and a glue application head (12). The connecting column (4) is symmetrically provided with a blowing assembly (7) and a dust suction and filter assembly (8). The blowing assembly (7) blows the welding or glue application area. The dust suction and filter assembly (8) filters the fumes generated when assembling the base plate after welding. The connecting column (4) is also provided with an orientation transformation assembly (9) that drives the blowing assembly (7) and the dust suction and filter assembly (8) to rotate around the quick-connect assembly (5). The base (2) is also fixedly connected with at least two placement racks (10) that carry the quick-connect connectors (6). The quick-connect assembly (5) includes a connecting shell (501) fixed to the bottom of the connecting post (4). The bottom of the connecting shell (501) is provided with an assembly groove (502). An electric cylinder (503) is fixedly connected to the outer side wall of the connecting shell (501). A locking push rod (504) is slidably connected to the inner side walls of both sides of the assembly groove (502). One end of the locking push rod (504) is fixedly connected to the output end of the electric cylinder (503). A limiting protrusion (505) is provided along the circumference of the outer side wall of the locking push rod (504). There are two limiting protrusions (505). The dust collection and filtration assembly (8) includes a storage box (801) and an L-shaped connecting plate (802). The storage box (801) is fixed to the side wall of the six-axis robotic arm (3). A dust collection hopper (812) is obliquely fixed to the bottom end of the L-shaped connecting plate (802). An exhaust fan (811) is installed through the side wall of the storage box (801). An air supply pipe (813) is connected through the dust collection hopper (812) and the exhaust fan (811). A pull-out bracket (803) is pulled out and fitted inside the storage box (801). The top of the storage box (801) is connected to the pull-out bracket. (803) The top end is fixed by a buckle. The inner walls of both sides of the pull-out bracket (803) are provided with a stop block (806), a partition plate (804), and a slot (808) from bottom to top. A collection drawer (807) is pulled out below the stop block (806). A filter cartridge (805) is threaded through the bottom end of the partition plate (804). An activated carbon plate (809) is slidably connected in the slot (808). An air outlet (810) is opened at the top end of the pull-out bracket (803). The position of the exhaust fan (811) corresponds to that of the filter cartridge (805). The orientation transformation component (9) includes a rotating disk (901) and a fixed disk (903). The side wall of the rotating disk (901) is fixedly connected to the top of the Z-shaped connecting plate (701) and the L-shaped connecting plate (802). A toothed ring (902) is fixedly connected to the top of the rotating disk (901). The inner side wall of the toothed ring (902) is rotatably connected to the outer side wall of the connecting column (4). The inner side wall of the fixed disk (903) is fixedly connected to the outer side wall of the connecting column (4). A second servo motor (904) is fixedly connected to the top of the fixed disk (903). A gear (905) is fixedly connected to the output end of the second servo motor (904). The gear (905) meshes with the toothed ring (902).

2. The flexible integrated workstation for welding and gluing the rear base plate assembly according to claim 1, characterized in that, The quick-connector (6) includes a Z-shaped connector (601) and a locking plate (602). The bottom sidewall of the Z-shaped connector (601) is fixedly connected to the locking plate (602) by bolts. The Z-shaped connector (601) and the locking plate (602) are clamped and fitted with a welding head (11) or a glue applicator (12). The top of the Z-shaped connector (601) is machined with a connector (603). The top of the connector (603) is provided with two protrusions (604). The sidewall of the protrusion (604) is provided with a locking hole (605). The top of the protrusion (604) is provided with an opening (606). The diameter of the opening (606) is adapted to the diameter of the locking push rod (504). The diameter of the locking hole (605) is adapted to the diameter of the limiting protrusion (505). The length of the limiting protrusion (505) is less than the distance between the two protrusions (604).

3. The flexible integrated workstation for welding and gluing the rear base plate assembly according to claim 1, characterized in that, The blower assembly (7) includes a Z-shaped connecting plate (701) and a blower (707). The bottom end of the Z-shaped connecting plate (701) is vertically fixed to an electric cylinder (702). The bottom end of the movable rod of the electric cylinder (702) is fixed to a fixed frame (703). The inner walls of both sides of the fixed frame (703) are rotatably connected to a rotating frame (704). The side wall of the fixed frame (703) is fixed to a servo motor (705). The output end of the servo motor (705) is fixedly connected to one side of the rotating frame (704). A nozzle (706) is installed on the rotating frame (704). A connecting pipe (708) is connected between the blower (707) and the nozzle (706). A limiting hole (710) is opened at the bottom end of the Z-shaped connecting plate (701). The connecting pipe (708) passes through the limiting hole (710). An electromagnetic heating coil (709) is installed in the air outlet of the blower (707).

4. The flexible integrated workstation for welding and gluing the rear base plate assembly according to claim 1, characterized in that, The top of the placement rack (10) is provided with a trapezoidal limiting groove (1001), which is adapted to the shape of the quick connector (6), and the bottom of the trapezoidal limiting groove (1001) is provided with a storage cavity (1002).

5. The flexible integrated workstation for welding and gluing the rear base plate assembly according to claim 4, characterized in that: The welding head (11) is connected to the external welding system, and the glue applicator (12) is connected to the external glue supply system.

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