Production line and production process of automobile back wall assembly

Abstract

The application discloses a production line and a production process for an automobile rear wall assembly, which comprises an inner plate assembly workbench, an outer plate assembly workbench, an inner-outer plate splicing workbench, a first repair welding workbench, a floor welding tongs, a stud welding tongs, an inspection bench, a first welding robot, a second welding robot and a grabbing robot, the first welding robot, the second welding robot and the grabbing robot are sequentially arranged, sequentially complete the welding assembly of the rear wall inner plate, the welding assembly of the rear wall outer plate, the welding splicing, spot welding repair welding and stud welding repair welding of the rear wall inner-outer plate assembly, and welding quality inspection is conducted on the processed rear wall assembly. The three robots cooperate with each other, improve the automation degree of the automobile rear wall assembly production, divide the welding work of a large number of welding points into three processes, reasonably distribute the working time length of each process, avoid the idle waiting of the robots and affect the overall production rhythm, improve the overall production efficiency of the production line, and avoid missed welding.

Description

Technical Field

[0001] This invention relates to the field of automobile body manufacturing technology, and in particular to a production line and manufacturing process for an automobile rear assembly. Background Technology

[0002] The rear panel of a car refers to the tailgate panel. The rear panel is a body panel composed of several panels. The rear panel can absorb the impact force and reduce the injury of passengers in the event of a traffic accident. In the production process of the rear panel, several parts that make up the rear panel need to be processed and welded together. There are many welding points in the entire production process, which requires multiple robots responsible for different welding processes to work together to complete the process.

[0003] The welding production line for the automotive rear assembly is divided into multiple work areas. Each component module passes through each work area in turn to complete its respective welding process. In actual production, due to the different working times of each welding robot, some robots have a long idle waiting time, which reduces production efficiency. Therefore, how to avoid missing weld points and improve production efficiency while ensuring welding quality is an urgent problem to be solved in the design of the automotive rear assembly line. Summary of the Invention

[0004] This invention provides a production line and manufacturing process for a car rear assembly to overcome the aforementioned technical problems.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A production line for a car rear assembly includes an inner panel assembly workbench, an outer panel assembly workbench, an inner and outer panel assembly workbench, a first repair welding workbench, a floor welding clamp, a stud welding clamp, an inspection table, a first welding robot, a second welding robot, and a gripping robot.

[0007] The first welding robot, the second welding robot, and the gripping robot are arranged in sequence. The first welding robot passes through the inner panel assembly workbench and the outer panel assembly workbench in sequence, processing the components set on the inner panel assembly workbench into a welding assembly of the rear inner panel, and processing the components set on the outer panel assembly workbench into a welding assembly of the rear outer panel. The second welding robot passes through the inner and outer panel assembly workbench and the first repair welding workbench in sequence, completing the welding assembly and preliminary welding of the rear inner and outer panel assemblies on the inner and outer panel assembly workbench, and completing the repair welding of the rear inner and outer panel assemblies on the first repair welding workbench. The gripping robot picks up the rear inner and outer panel assemblies that have been repaired in the first repair welding from the first repair welding workbench, passes them through the floor welding clamp and the stud welding clamp in sequence, and completes the spot welding repair welding and stud welding repair welding of the rear assembly, and sends the processed rear assembly to the inspection table.

[0008] The working time of the first welding robot, the second welding robot, and the grasping robot is equal.

[0009] Furthermore, it also includes clamping mechanisms, of which there are multiple clamping mechanisms, which are respectively disposed on the operating table surfaces of the inner panel assembly worktable, the outer panel assembly worktable, the inner and outer panel assembly worktable and the first welding worktable. The clamping mechanisms clamp and fix the workpiece to be welded.

[0010] Furthermore, the clamping mechanism includes a fixing part, a cylinder, and clamps. The clamps include an upper clamp and a lower clamp, with one end of the upper clamp and the lower clamp hinged together. The other ends of the upper clamp and the lower clamp form a clamping space to clamp the workpiece to be welded. The bottom of the fixing part is fixedly connected to the operating table, and the top end of the fixing part is fixedly connected to the lower clamp. A piston rod is provided inside the cylinder, with one end of the piston rod hinged to one end of the upper clamp. The piston rod drives the end of the upper clamp to move vertically, thereby causing the clamps to open and close.

[0011] Furthermore, the inner panel assembly workbench, the outer panel assembly workbench, the inner and outer panel assembly workbench, the first repair welding workbench, and the inspection table are sequentially arranged on one side of the first welding robot, the second welding robot, and the gripping robot, while the floor welding clamp and the stud welding clamp are arranged on the other side of the gripping robot.

[0012] Furthermore, it also includes an electrode grinder, which is located within the working radius of the first welding robot and the second welding robot.

[0013] Furthermore, the inner panel assembly workbench, the outer panel assembly workbench, the inner and outer panel assembly workbench, the first welding workbench, and the inspection table are each provided with omnidirectional wheels that can be rolled and locked, and the inner panel assembly workbench, the outer panel assembly workbench, the inner and outer panel assembly workbench, the first welding workbench, and the inspection table are provided with handles on their sides.

[0014] Furthermore, a manufacturing process utilizing the aforementioned automotive rear panel assembly production line includes the following steps:

[0015] Step 1: The worker transports the left rear connecting plate projection welding assembly, the right rear connecting plate projection welding assembly, the inner rear panel, and the rear partition plate to the inner panel assembly workbench, adjusts the clamping mechanism to clamp each blank plate, and starts the first welding robot. The first welding robot welds the left rear connecting plate projection welding assembly, the right rear connecting plate projection welding assembly, the inner rear panel, and the rear partition plate together to form the inner rear panel assembly.

[0016] Step 2: The workers transport the rear buckle reinforcement plate, nut plate, nut box, rear bumper upper fixing bracket and rear bumper lower mounting bracket projection welding assembly to the outer panel assembly workbench, adjust the clamping mechanism to clamp each blank plate, and the first welding robot welds the rear buckle reinforcement plate, nut plate, nut box, rear bumper upper fixing bracket and rear bumper lower mounting bracket projection welding assembly that make up the rear outer panel assembly together;

[0017] Step 3: The workers transport the processed inner rear panel assembly and outer rear panel assembly to the inner and outer panel assembly workbench, adjust the clamping mechanism to clamp the inner rear panel assembly and outer rear panel assembly into place, and the second welding robot assembles the inner rear panel assembly and outer rear panel assembly together and welds some of the weld points to ensure that the inner rear panel assembly and outer rear panel assembly do not fall off.

[0018] Step 4: The staff transports the rear assembly assembled in Step 3 to the first welding workbench, and the second welding robot performs welding repairs on some of the weld points of the rear assembly.

[0019] Step 5: The grabbing robot grabs the rear assembly that has been initially repaired and welded on the first repair welding workbench and transports it to the ground welding clamp to repair the remaining weld points of the rear assembly.

[0020] Step 6: The gripping robot transports the spot-welded rear assembly to the stud welding clamp and performs stud welding on the rear assembly;

[0021] Step 7: The gripping robot transports the processed rear car assembly to the inspection table, where staff inspect the welding quality and move the self-inspected and qualified assemblies to the next work area.

[0022] Furthermore, the working time of the first welding robot, the second welding robot, and the gripping robot is equal to the sum of the welding and handling time of the robots and the handling and clamping time of the workers before the corresponding welding. The working time of the first welding robot, the second welding robot, and the gripping robot are equal.

[0023] Beneficial Effects: This invention discloses a production line and manufacturing process for an automotive rear panel assembly. A first welding robot completes the welding of the inner and outer rear panel assemblies. A second welding robot completes the welding assembly of the inner and outer rear panel assemblies, as well as spot welding of some weld points. A gripping robot completes the supplementary welding of remaining weld points and stud welding of the rear panel assembly. The three robots cooperate to improve the automation level of automotive rear panel assembly production. Since the automotive rear panel assembly has many weld points, by setting up three robots, the welding work of a large number of weld points during assembly is divided into three processes and six steps. The working time of each process is reasonably allocated to avoid robots being idle and affecting the overall production rhythm. The three robots can work continuously, improving the overall production efficiency of the production line, avoiding missed welds, and ensuring product quality. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a top view of a production line for an automotive rear assembly disclosed in an embodiment of the present invention;

[0026] Figure 2 This is an isometric view of a production line for an automotive rear assembly disclosed in an embodiment of the present invention;

[0027] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0028] In the diagram: 1. Inner panel assembly workbench; 2. Outer panel assembly workbench; 3. Inner and outer panel assembly workbench; 4. First repair welding workbench; 5. Floor-standing welding clamp; 6. Stud welding clamp; 7. Inspection table; 8. Clamping mechanism; 81. Fixing part; 82. Cylinder; 821. Piston rod; 83. Clamp; 831. Upper clamp; 832. Lower clamp; 9. First welding robot; 10. Second welding robot; 11. Gripping robot; 12. Electrode grinder; 13. Operating table; 14. Casters; 15. Handle. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] This embodiment provides a production line for an automotive rear panel assembly, such as... Figure 1-2 As shown, it includes an inner panel assembly workbench 1, an outer panel assembly workbench 2, an inner and outer panel assembly workbench 3, a first repair welding workbench 4, a floor welding clamp 5, a stud welding clamp 6, an inspection table 7, a first welding robot 9, a second welding robot 10, and a gripping robot 11.

[0032] The first welding robot 9, the second welding robot 10, and the gripping robot 11 are arranged in sequence. The first welding robot 9 passes through the inner panel assembly workbench 1 and the outer panel assembly workbench 2 in sequence, processing the components set on the inner panel assembly workbench 1 into a welding assembly of the rear inner panel, and processing the components set on the outer panel assembly workbench 2 into a welding assembly of the rear outer panel. The second welding robot 10 passes through the inner and outer panel assembly workbench 3 and the first repair welding workbench 4 in sequence, completing the welding assembly and preliminary welding of the rear inner and outer panel assemblies on the inner and outer panel assembly workbench 3, and completing the repair welding of the rear inner and outer panel assemblies on the first repair welding workbench 4. The gripping robot 11 picks up the rear inner and outer panel assemblies that have completed the first repair welding from the first repair welding workbench 4, passes through the floor welding clamp 5 and the stud welding clamp 6 in sequence, and completes the spot welding repair welding and stud welding repair welding of the rear assembly, and sends the processed rear assembly to the inspection table 7.

[0033] The working time of the first welding robot 9, the second welding robot 10, and the gripping robot 11 is equal.

[0034] The inner panel assembly workbench 1 and the outer panel assembly workbench 2 are both located within the working radius of the first welding robot 9. The inner and outer panel assembly workbench 3 and the first repair welding workbench 4 are both located within the working radius of the second welding robot 10. The floor welding clamp 5, the stud welding clamp 6, and the inspection table 7 are all located within the working radius of the gripping robot 11.

[0035] The working ends of the first welding robot 9 and the second welding robot 10 are equipped with welding clamps for welding specific weld points on the inner panel assembly workbench 1, the outer panel assembly workbench 2, the inner and outer panel assembly workbench 3 and the first repair welding workbench 4. The working end of the gripping robot 11 is equipped with a gripping part for gripping and transferring the assembly after repair welding on the first repair welding workbench 4.

[0036] In this embodiment, a first welding robot completes the welding of the inner and outer rear panel assemblies of the automobile. A second welding robot completes the welding assembly of the inner and outer rear panel assemblies, as well as spot welding of some weld points. A gripping robot completes the supplementary welding of the remaining weld points and stud welding of the rear panel assembly. The three robots cooperate with each other, improving the automation level of automobile rear panel assembly production. Since there are many weld points in the automobile rear panel assembly, by setting up three robots, the welding work of a large number of weld points during assembly is divided into three processes and six steps. The working time of each process is reasonably allocated to avoid the welding robots being idle and waiting, which would affect the overall production rhythm. The three robots can work continuously, improving the overall production efficiency of the production line, avoiding missed welds, and ensuring product quality.

[0037] In a specific embodiment, a clamping mechanism 8 is also included. There are multiple clamping mechanisms 8, which are respectively disposed on the operating surfaces 13 of the inner panel assembly worktable 1, the outer panel assembly worktable 2, the inner and outer panel assembly worktable 3, and the first welding worktable 4. The clamping mechanism 8 clamps and fixes the workpiece to be welded. The clamping mechanism holds the workpiece to be welded to prevent the workpiece from shifting during the welding process and affecting the welding quality.

[0038] In a specific embodiment, such as Figure 3As shown, the clamping mechanism 8 includes a fixing part 81, a cylinder 82, and a clamp 83. The clamp 83 includes an upper clamp 831 and a lower clamp 832. One end of the upper clamp 831 and the lower clamp 832 are hinged together, and the other end of the upper clamp 831 and the lower clamp 832 forms a clamping space to clamp the workpiece to be welded. The bottom of the fixing part 81 is fixedly connected to the operating table 13, and the top end of the fixing part 81 is fixedly connected to the lower clamp 832. The cylinder 82 has a piston rod 821 inside, and one end of the piston rod 821 is hinged to one end of the upper clamp 831. The piston rod 821 drives the upper clamp. The vertical movement of the end of 831 drives the opening and closing of the clamp 83. The upper clamp 831 and the lower clamp 832 are hinged at one end near the cylinder 82. The piston rod 821 moves downward, causing the end of the upper clamp 831 to move downward. At this time, the free end of the upper clamp 831 moves upward, placing the workpiece to be welded into the clamping space. The piston rod 821 moves upward, causing the end of the upper clamp 831 to move upward. At this time, the free end of the upper clamp 831 moves downward, clamping the workpiece to be welded and fixing it. The fixing part 81 fixes the clamping mechanism 8 on the operating table surface 13 of the corresponding workbench.

[0039] In a specific embodiment, the inner panel assembly workbench 1, the outer panel assembly workbench 2, the inner and outer panel assembly workbench 3, the first repair welding workbench 4, and the inspection table 7 are sequentially arranged on one side of the first welding robot 9, the second welding robot 10, and the gripping robot 11, while the floor welding clamp 5 and the stud welding clamp 6 are arranged on the other side of the gripping robot 11. This arrangement can save the floor space of the automotive rear panel assembly production line.

[0040] In a specific embodiment, an electrode grinder 12 is also included. The electrode grinder 12 is located within the working radius of the first welding robot 9 and the second welding robot 10. The electrode grinder 12 periodically trims the welding electrodes of the first welding robot 9 and the second welding robot 10 to improve the welding quality.

[0041] In a specific embodiment, the inner panel assembly workbench 1, the outer panel assembly workbench 2, the inner and outer panel assembly workbench 3, the first welding repair workbench 4, and the inspection table 7 are respectively provided with omnidirectional wheels 14 that can roll and lock. The inner panel assembly workbench 1, the outer panel assembly workbench 2, the inner and outer panel assembly workbench 3, the first welding repair workbench 4, and the inspection table 7 are provided with handles 15 on their sides. When the operator clamps the workpiece to be welded on the inner panel assembly workbench 1, the outer panel assembly workbench 2, the inner and outer panel assembly workbench 3, and the first welding repair workbench 4, in order to prevent the robot that is performing welding operations from causing injury to the operator, the operator can pull the handle 15 to move the workbench away from the production line for pre-welding preparation. After the rear assembly is processed, the operator pushes the inspection table 7 to move the processed rear assembly to the next work location.

[0042] For the same purpose, the present invention also provides Embodiment 2: a manufacturing process utilizing a production line for an automotive rear panel assembly, comprising the following steps:

[0043] Step 1: The worker transports the left rear connecting plate projection welding assembly, the right rear connecting plate projection welding assembly, the inner rear panel, and the rear partition plate to the inner panel assembly workbench 1, adjusts the clamping mechanism 8 to clamp each blank plate, and starts the first welding robot 9. The first welding robot 9 welds the left rear connecting plate projection welding assembly, the right rear connecting plate projection welding assembly, the inner rear panel, and the rear partition plate together to form the inner rear panel assembly.

[0044] Step 2: The workers transport the rear buckle reinforcement plate, nut plate, nut box, rear bumper upper fixing bracket and rear bumper lower mounting bracket projection welding assembly to the outer panel assembly workbench 2 respectively, adjust the clamping mechanism 8 to clamp each blank plate, and the first welding robot 9 welds the rear buckle reinforcement plate, nut plate, nut box, rear bumper upper fixing bracket and rear bumper lower mounting bracket projection welding assembly that make up the rear outer panel assembly together;

[0045] Step 3: The workers transport the processed inner rear panel assembly and outer rear panel assembly to the inner and outer panel assembly workbench 3, adjust the clamping mechanism 8 to clamp the inner rear panel assembly and outer rear panel assembly into place, and the second welding robot 10 assembles the inner rear panel assembly and outer rear panel assembly together and welds some of the weld points to ensure that the inner rear panel assembly and outer rear panel assembly do not fall off.

[0046] Step 4: The staff moves the rear assembly assembled in Step 3 to the first welding workbench 4, and the second welding robot 10 performs welding repairs on some of the weld points of the rear assembly.

[0047] Step 5: The gripping robot 11 grips the rear assembly that has been initially repaired on the first repair welding workbench 4 and transports it to the floor welding clamp 5 to repair the remaining weld points of the rear assembly.

[0048] Step 6: The gripping robot 11 transports the spot-welded rear assembly to the stud welding clamp 6 and performs stud welding on the rear assembly;

[0049] Step 7: The gripping robot 11 transports the processed rear panel assembly of the car to the inspection table 7. The staff inspects the welding quality and moves the self-inspected qualified assembly to the next work area.

[0050] In a specific embodiment, the working time of the first welding robot 9, the second welding robot 10, and the gripping robot 11 is equal to the sum of the welding and handling time of the robots and the handling and clamping time of the workers before the corresponding welding. The working time of the first welding robot 9, the second welding robot 10, and the gripping robot 11 is equal, so that the three robots can work continuously. This avoids the situation where after one robot finishes its work, the processed workpiece cannot be smoothly transferred to the next robot because the next robot is still working, which would cause the robots to be in a waiting state and affect the processing rhythm of the entire production line, thus reducing production efficiency.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A production line for a car rear assembly, characterized in that: It includes an inner panel assembly workbench (1), an outer panel assembly workbench (2), an inner and outer panel assembly workbench (3), a first repair welding workbench (4), a floor welding clamp (5), a stud welding clamp (6), an inspection table (7), a clamping mechanism (8), a first welding robot (9), a second welding robot (10), and a gripping robot (11). The first welding robot (9), the second welding robot (10), and the gripping robot (11) are arranged in sequence. The first welding robot (9) passes through the inner panel assembly workbench (1) and the outer panel assembly workbench (2) in sequence, processing the components set on the inner panel assembly workbench (1) into a welding assembly of the rear inner panel, and processing the components set on the outer panel assembly workbench (2) into a welding assembly of the rear outer panel. The second welding robot (10) passes through the inner and outer panel assembly workbench (3) and the first repair welding workbench (4) in sequence, completing the welding assembly and preliminary welding of the inner and outer panel assemblies on the inner and outer panel assembly workbench (3). The first welding workbench (4) completes the welding of the inner and outer rear panel assembly. The gripping robot (11) picks up the inner and outer rear panel assembly that has been welded for the first time from the first welding workbench (4) and passes it through the ground welding clamp (5) and the stud welding clamp (6) to complete the spot welding and stud welding of the rear panel assembly. The processed rear panel assembly is then sent to the inspection table (7). The clamping mechanism (8) clamps and fixes the workpiece to be welded. There are multiple clamping mechanisms (8), which are respectively set on the operating table (13) of the inner panel assembly workbench (1), the outer panel assembly workbench (2), the inner and outer panel assembly workbench (3) and the first welding workbench (4). The working time of the first welding robot (9), the second welding robot (10) and the gripping robot (11) is equal to the sum of the welding and handling time of the robot and the handling and clamping time of the worker before the corresponding welding. The working time of the first welding robot (9), the second welding robot (10) and the gripping robot (11) are equal.

2. The production line for an automotive rear assembly according to claim 1, characterized in that: The clamping mechanism (8) includes a fixing part (81), a cylinder (82) and a clamp (83). The clamp (83) includes an upper clamp (831) and a lower clamp (832). One end of the upper clamp (831) and the lower clamp (832) are hinged together. The other end of the upper clamp (831) and the lower clamp (832) forms a clamping space to clamp the workpiece to be welded. The bottom of the fixing part (81) is fixedly connected to the operating table (13), and the top end of the fixing part (81) is fixedly connected to the lower clamp (832). The cylinder (82) is provided with a piston rod (821). One end of the piston rod (821) is hinged to one end of the upper clamp (831). The piston rod (821) drives the end of the upper clamp (831) to move vertically, thereby driving the clamp (83) to open and close.

3. The production line for an automotive rear assembly according to claim 1, characterized in that: The inner panel assembly workbench (1), the outer panel assembly workbench (2), the inner and outer panel assembly workbench (3), the first repair welding workbench (4), and the inspection table (7) are sequentially arranged on one side of the first welding robot (9), the second welding robot (10), and the gripping robot (11), while the floor welding clamp (5) and the stud welding clamp (6) are arranged on the other side of the gripping robot (11).

4. The production line for an automotive rear assembly according to claim 1, characterized in that: It also includes an electrode grinder (12), which is located within the working radius of the first welding robot (9) and the second welding robot (10).

5. The production line for an automotive rear assembly according to claim 1, characterized in that: The inner panel assembly workbench (1), the outer panel assembly workbench (2), the inner and outer panel assembly workbench (3), the first welding workbench (4), and the inspection table (7) are respectively provided with omnidirectional wheels (14) that can roll and lock. The inner panel assembly workbench (1), the outer panel assembly workbench (2), the inner and outer panel assembly workbench (3), the first welding workbench (4), and the inspection table (7) are provided with handles (15) on their sides.

6. A manufacturing process for an automotive rear panel assembly production line according to any one of claims 1 to 5, characterized in that, Includes the following steps: Step 1: The staff will transport the rear left connecting plate projection welding assembly, the rear right connecting plate projection welding assembly, the rear inner plate and the rear partition to the inner plate assembly workbench (1) respectively, adjust the clamping mechanism (8) to clamp each blank plate, start the first welding robot (9), and the first welding robot (9) will weld the rear left connecting plate projection welding assembly, the rear right connecting plate projection welding assembly, the rear inner plate and the rear partition together to form the rear inner plate assembly; Step 2: The staff will move the rear buckle reinforcement plate, nut plate, nut box, rear upper fixing bracket and rear lower mounting bracket projection welding assembly to the outer plate assembly workbench (2) respectively, adjust the clamping mechanism (8) to clamp each blank plate, and the first welding robot (9) will weld the rear buckle reinforcement plate, nut plate, nut box, rear upper fixing bracket and rear lower mounting bracket projection welding assembly that make up the rear outer plate assembly together; Step 3: The staff will move the finished inner rear panel assembly and outer rear panel assembly to the inner and outer panel assembly workbench (3), adjust the clamping mechanism (8) to clamp the inner rear panel assembly and outer rear panel assembly into place, and the second welding robot (10) will assemble the inner rear panel assembly and outer rear panel assembly together and weld some of the weld points to ensure that the inner rear panel assembly and outer rear panel assembly do not fall off. Step 4: The staff transported the rear assembly assembled in Step 3 to the first welding workbench (4), and the second welding robot (10) repaired some of the weld points of the rear assembly. Step 5: The grabbing robot (11) grabs the rear assembly that has been initially repaired on the first repair welding workbench (4) and transports it to the ground welding clamp (5) to repair the remaining weld points of the rear assembly. Step 6: The gripping robot (11) transports the spot-welded rear assembly to the stud welding clamp (6) and performs stud welding on the rear assembly; Step 7: The gripping robot (11) transports the processed car rear assembly to the inspection table (7), where staff inspect the welding quality and move the self-inspected qualified assembly to the next work area.

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