Flexible production side wall robot workstation for automobile welding production line

Abstract

The invention is used for the technical field of automobile welding production lines, and particularly discloses an automobile welding production line flexible production side wall robot workstation which comprises a transportation bottom plate frame, the transportation bottom plate frame is fixedly installed on the ground, and a tray unloading bottom plate is fixedly installed on the ground of one side of a detection area bottom plate. According to the flexible production side wall robot workstation for the automobile welding production line, when automobile welding models are replaced, only an automobile fixing clamp fixed with an automobile frame needs to be inserted between the transverse positioning block and the longitudinal positioning block, and when the automobile fixing clamp is completely inserted between the transverse positioning block and the longitudinal positioning block, the automobile welding models can be replaced. According to the welding line, the spring inserting rod can be clamped into the vehicle fixing clamp so that the vehicle frame model needing to be welded can be rapidly installed, the vehicle fixing clamp and the spring inserting rod can be conveniently separated by pulling the spring inserting rod, the complexity of replacing the welding vehicle frame model is reduced, and the production efficiency of the welding line is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile welding production lines, and particularly to a flexible production side wall robot workstation for an automobile welding production line. Background Art

[0002] With the progress of the times and the popularization of automobiles, more and more different types of automobiles are produced. An automobile is composed of multiple frames and components welded together. As one of the four major processes in automobile manufacturing, body welding is the core process in the whole vehicle production process and is the basis for ensuring the firmness and durability of the automobile. With the continuous improvement of the automation degree of automobile welding production lines, and the birth and replacement cycle of new vehicles in the market becoming shorter and shorter, various automobile manufacturers are constantly putting forward higher requirements for the flexibility performance of production lines. The flexibility requirement is particularly important in multi-variety and small-batch production. Due to the different vehicle models, the types of parts involved in the welding line change quite a lot, resulting in a relatively high degree of non-standard integration of equipment, thus making the flexibility of the welding line become the bottleneck restricting the development of automobile welding production.

[0003] Traditional welding lines often use reciprocating rods or high-speed roller beds as the conveying system. The rigidity of the above two conveying methods is relatively high, and they cannot meet the rapid switching requirements of fixtures during the co-line production of multi-platform vehicle models, resulting in difficulties in replacing fixtures when changing automobile welding models, seriously affecting the efficiency of welding production. Summary of the Invention

[0004] The purpose of the present invention is to provide a flexible production side wall robot workstation for an automobile welding production line to solve the problem of difficult fixture replacement affecting production efficiency proposed in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A flexible production side wall robot workstation for an automobile welding production line includes a transportation bottom plate frame, which is fixedly installed on the ground. And on one side of the ground of the transportation bottom plate frame, a detection area bottom plate is fixedly installed, and the detection area bottom plate is butted against the transportation bottom plate frame. On one side of the ground of the detection area bottom plate, a disk unloading bottom plate is fixedly installed, and one side of the disk unloading bottom plate is butted against the detection area bottom plate. Roller transportation boxes are respectively fixedly installed on the outer surfaces of the transportation bottom plate frame, the detection area bottom plate and the disk unloading bottom plate. And guiding tracks are respectively fixedly installed on the outer surfaces of both sides of the detection area bottom plate, the disk unloading bottom plate and the transportation bottom plate frame. A moving transportation bottom plate is placed on the outer surface of the roller transportation box, and a vehicle fixing fixture is snap-fitted and installed on the outer surface of the moving transportation bottom plate. A plug-in clamping mechanism is arranged between the vehicle fixing fixture and the moving transportation bottom plate, and the vehicle fixing fixture can be fixed and quickly replaced through the plug-in clamping mechanism.

[0006] Preferably, the plug-in engaging mechanism includes: a lateral positioning block fixedly installed on the outer surfaces of both sides of the mobile transport bottom plate, and longitudinal positioning blocks fixedly installed on the other two sides of the mobile transport bottom plate. The outer surfaces of the lateral positioning block and the longitudinal positioning blocks are both inclined. A spring plug rod is slidably installed on the outer surface of the longitudinal positioning block. One end of the spring plug rod is inserted into the vehicle fixing fixture, and the outer surface of the vehicle fixing fixture is respectively attached to the outer surfaces of the lateral positioning block and the longitudinal positioning block.

[0007] By adopting the above technical solution, through the inclined design of the lateral positioning block and the longitudinal positioning block, it is convenient for the vehicle fixing fixture and the vehicle frame to be easily placed and inserted when placed on the outer surface of the mobile transport bottom plate. And through the engagement of the lateral positioning block and the longitudinal positioning block with the vehicle fixing fixture, the vehicle fixing fixture will not be displaced due to movement during the mobile transport of the mobile transport bottom plate, improving the stability of the mobile transport bottom plate. When the vehicle fixing fixture is placed on the mobile transport bottom plate, the spring plug rod can automatically pop out and be inserted into the vehicle fixing fixture, enabling the vehicle frame and the vehicle fixing fixture to be fixed first and quickly connected and fixed to the mobile transport bottom plate, so that the vehicle fixing fixture can be quickly replaced and installed without affecting the welding production efficiency.

[0008] Preferably, an installation block is fixedly installed on the outer surface of one side of the mobile transport bottom plate away from the vehicle fixing fixture, and an elastic sliding mechanism is provided between the installation block and the guide track. The elastic sliding mechanism facilitates the restriction and guidance of the movement of the mobile transport bottom plate and can quickly separate the mobile transport bottom plate from the guide track.

[0009] By adopting the above technical solution, the mobile transport bottom plate can be restricted inside the guide track, enabling the mobile transport bottom plate to move through the roller transport box and facilitating the guidance of the mobile transport bottom plate.

[0010] Preferably, the elastic sliding mechanism includes: a strong spring push rod slidably installed inside the installation block, and a slider roller slidably installed on the outer surface of the installation block. The installation block engages with the slider roller, and one end outer surface of the slider roller is attached to the outer surface of the guide track, and the guide track engages with the slider roller.

[0011] By adopting the above technical solution, through the setting of the strong spring push rod, the slider roller can slide inside the installation block, enabling the slider roller to be easily separated from the guide track and restricting the mobile transport bottom plate to be clamped between the guide tracks, reducing the probability of derailment of the mobile transport bottom plate during mobile transport.

[0012] Preferably, moving platforms are fixedly installed on the ground on the outer surfaces of both sides of the transport bottom plate frame, and a welding robotic arm is fixedly installed on the outer surface of the moving platform. A grating ruler is fixedly installed on one end outer surface of the welding robotic arm, and the other end of the grating ruler is fixedly installed on the outer surface of one side of the moving platform. A welding torch cleaner is fixedly installed on the ground on one side of the moving platform, and the cleaning end of the welding torch cleaner faces the welding robotic arm.

[0013] With the above technical solution, after the moving transport bottom plate moves to one side of the welding robotic arm, the welding robotic arm will move on the outer surface of the moving platform according to the frame model to be welded, and accurately determine the distance between the welding robotic arm and the frame through the grating ruler, which is convenient for the welding robotic arm to weld the frame. After one welding is completed, the welding torch cleaner will clean the gun head to ensure the welding quality when welding the side wall of the frame each time, and the position of the welding robotic arm can be adjusted according to the frame model to facilitate welding of frames of different models.

[0014] Preferably, a positioning strip is fixedly installed on the outer surface of the moving transport bottom plate, and a positioning and lifting mechanism is arranged between the positioning strip and the roller transport box. Through the positioning and lifting mechanism, the vehicle fixing fixture and the frame can stop above the transport bottom plate frame and the inspection area bottom plate, so that the frame can be automatically positioned and fixed during welding and inspection.

[0015] With the above technical solution, the moving transport bottom plate, the vehicle fixing fixture and the frame can accurately stop at the positions where processing is required, and the moving transport bottom plate can accurately stop at the processing position.

[0016] Preferably, the positioning and lifting mechanism includes: a positioning microswitch, which is fixedly installed on the side surface of the roller transport box. The positioning microswitch is close to the positioning strip, and the outer surface of the positioning strip is in contact with the outer surface of the positioning microswitch. Positioning cylinders are respectively fixedly installed on the outer surfaces of the transport bottom plate frame and the inspection area bottom plate, and the positioning cylinders are located inside the roller transport box. The outer surface of the output end of the positioning cylinder is in contact with the outer surface of the moving transport bottom plate.

[0017] With the above technical solution, when the moving transport bottom plate moves through the roller transport box, the moving transport bottom plate will drive the positioning strip to move together. After the moving transport bottom plate moves to the specified position, the positioning strip will contact the positioning microswitch. When the positioning microswitches at both ends are triggered simultaneously, the positioning cylinder will start and lift to contact the moving transport bottom plate, and at the same time stop the roller transport box, so that the moving transport bottom plate can accurately stop at the processing position.

[0018] Preferably, visual inspection robots are fixedly installed on the ground at both sides of the bottom plate of the inspection area, and a fill light reflector is fixedly installed on the visual inspection end of the visual inspection robot.

[0019] With the above technical solution, after the frame welding is completed and stops above the bottom plate of the inspection area, the position of the frame welding can be checked by the visual inspection robot. The position, shape, weld quality, etc. of the frame welding can be monitored and analyzed in real time through the camera and image processing algorithm of the visual inspection robot. When welding defects or component positioning deviations occur in the frame, an alarm can be issued in time and feedback can be given to the control system for adjustment and correction.

[0020] Preferably, multi-stage hydraulic lifting rods are fixedly installed on the outer surfaces of both ends of the unloading base plate, and the multi-stage hydraulic lifting rods are located inside the roller transport box. A guide pushing mechanism is provided between the unloading base plate and the strong spring push rod. The guide pushing mechanism enables the strong spring push rod to be automatically pushed into the mounting block, so that the slider roller can be automatically separated from the guide rail, so that the welded frame, mobile transport base plate and other parts can be removed from the guide rail and sent to the unloading finished product area.

[0021] By adopting the above technical solution, the slider roller and the guide rail can be easily and automatically separated, so that the mobile transport base plate and the frame can be easily removed, and the mobile transport base plate can be conveniently removed and moved, so that the mobile transport base plate can be moved to the starting end of the welding production line again for operation.

[0022] Preferably, the guide pushing mechanism includes: a guide limiting side plate, the guide limiting side plate is fixedly arranged on the outer surfaces of both sides of the unloading plate bottom plate, the end of the guide limiting side plate close to the detection area bottom plate is inclined, and the outer surface of the strong spring push rod is rotatably installed with a ball, and the outer surface of the ball is in contact with the outer surface of the guide limiting side plate.

[0023] By adopting the above technical solution, when the roller transport box pushes the mobile transport base plate to the inside of the unloading base plate, the ball on the outer surface of the strong spring push rod will contact the guide limit side plate, and the strong spring push rod will be pushed into the inside of the mounting block, so that the slider roller can automatically separate from the guide rail, and when the mobile transport base plate moves to the specified position and triggers the positioning micro switch, the multi-stage hydraulic jacking rod will start and gradually lift the mobile transport base plate, so that the mobile transport base plate and the slider roller can move up, allowing the mobile transport base plate to be automatically separated, making it convenient for workers to use tools to take out the frame, mobile transport base plate and vehicle fixing fixture together and move them to the disassembly and separation area, so that the guide rail and slider roller can be automatically separated.

[0024] Compared with the prior art, the beneficial effects of the present invention are: the flexible production side panel robot workstation of the automobile welding production line:

[0025] 1. When replacing the model of automobile welding, it is only necessary to insert the vehicle fixing fixture with the vehicle frame fixed between the horizontal positioning block and the vertical positioning block. Due to the inclined design of the horizontal positioning block and the vertical positioning block, it is easier and more accurate for the vehicle fixing fixture to be inserted into the interior of the horizontal positioning block and the vertical positioning block. When the vehicle fixing fixture is completely inserted between the horizontal positioning block and the vertical positioning block, the spring insertion rod can be inserted into the interior of the vehicle fixing fixture to quickly install the vehicle frame model to be welded. At the same time, the vehicle fixing fixture can be conveniently taken out by pulling the spring insertion rod, and the vehicle frame can be pre-assembled and fixed on the outer surface of the vehicle fixing fixture, reducing the complexity when replacing the welded vehicle frame model and improving the production efficiency of the welding line;

[0026] 2. Through the movement of the roller transport box, the movable transport bottom plate is transported to one side of the welding robotic arm. After the movable transport bottom plate is fixed, the moving platform will adjust the position of the welding robotic arm according to the welded vehicle frame model, and the position of the welding robotic arm on the moving platform can be made more accurate through the grating ruler, improving the positioning when welding the side wall of the vehicle frame. After the welding robotic arm finishes welding the vehicle frame, the gun head of the welding robotic arm can be cleaned by the welding torch cleaner, so that no welding slag and other debris remain on the outer surface of the gun head of the welding robotic arm, ensuring the welding quality of the vehicle frame by the welding robotic arm;

[0027] 3. As the roller transport box transports and moves the movable transport bottom plate, the positioning strip will be driven to move together. After the movable transport bottom plate moves to the designated position, the positioning micro switches on both sides of the roller transport box will be completely triggered, causing the roller transport box to stop and activate the positioning cylinder, enabling the positioning cylinder to automatically fix and stop the movable transport bottom plate;

[0028] 4. Through the setting of the strong spring push rod, when the movable transport bottom plate is inserted into the interior of the transport bottom plate rack, the strong spring push rod can retract into the interior of the mounting block, allowing the slider roller to move. Through the transportation of the roller transport box, the strong spring push rod can gradually pop out, and the slider roller can be engaged with the guide track, facilitating the clamping and installation of the movable transport bottom plate above the transport bottom plate rack;

[0029] 5. After the welding of the vehicle frame side panel is completed, it will move above the inspection area floor along with the moving transport floor. After the moving transport floor is fixed and positioned, the vision inspection robot will conduct real-time inspection on the welded joints of the vehicle frame side panel. Through the camera and image processing algorithm of the vision inspection robot, the position, shape, and weld quality of the vehicle frame welded joints will be monitored and analyzed. When there are welding defects or component positioning deviations in the vehicle frame, data can be timely fed back to the system, and an alarm will be issued in a timely manner, reducing subsequent welding errors of the vehicle frame, facilitating adjustment and correction, and reducing the costs generated during production welding errors;

[0030] 6. After the inspection is completed, the moving transport floor will be transported to above the unloading floor through the roller transport box. At this time, the ball will contact the guiding and limiting side plate, causing the powerful spring push rod to automatically retract into the interior of the mounting block, enabling the slider roller to automatically separate from the guiding track. After the positioning microswitch is triggered simultaneously, the multi-stage hydraulic lifting rod can completely lift the moving transport floor, facilitating workers to use tools to remove the moving transport floor from above the unloading floor and transfer it to the separation area, where the moving transport floor, vehicle fixing fixture, and vehicle frame can be separated, enabling the moving transport floor to be easily removed from the production line and sent to the starting end of the production line for convenient recycling, without occupying the moving transport floor when disassembling the vehicle frame, and enabling the moving transport floor to automatically separate from the unloading floor. Description of the Drawings

[0031] Figure 1 Schematic three-dimensional structure diagram of the transport floor frame and inspection area floor of the present invention;

[0032] Figure 2 Schematic three-dimensional structure diagram of the transport floor frame and moving transport floor of the present invention;

[0033] Figure 3 Schematic three-dimensional structure diagram of the roller transport box and positioning cylinder of the present invention;

[0034] Figure 4 Schematic three-dimensional structure diagram of the welding robotic arm and welding torch cleaner of the present invention;

[0035] Figure 5 Schematic three-dimensional structure diagram of the moving transport floor and mounting block of the present invention;

[0036] Figure 6 Schematic cross-sectional three-dimensional structure diagram of the mounting block and powerful spring push rod of the present invention;

[0037] Figure 7 Schematic three-dimensional structure diagram of the inspection area floor and vision inspection robot of the present invention;

[0038] Figure 8Schematic three-dimensional structure diagram of the positioning bar and the positioning microswitch of the present invention;

[0039] Figure 9 Schematic three-dimensional structure diagram of the disc unloading bottom plate and the guiding and limiting side plate of the present invention;

[0040] Figure 10 Schematic three-dimensional structure diagram of the disc unloading bottom plate and the multi-stage hydraulic lifting rod of the present invention;

[0041] Figure 11 Schematic three-dimensional structure diagram of the roller transport box and the multi-stage hydraulic lifting rod of the present invention.

[0042] In the figure: 1. Transport bottom plate frame; 2. Guiding track; 3. Roller transport box; 4. Movable transport bottom plate; 5. Mounting block; 6. Strong spring push rod; 7. Slide roller; 8. Horizontal positioning block; 9. Vehicle fixing fixture; 10. Longitudinal positioning block; 11. Spring insertion rod; 12. Movable platform; 13. Welding robotic arm; 14. Welding torch cleaner; 15. Positioning bar; 16. Positioning microswitch; 17. Positioning cylinder; 18. Detection area bottom plate; 19. Vision detection robot; 20. Disc unloading bottom plate; 21. Guiding and limiting side plate; 22. Multi-stage hydraulic lifting rod; 23. Ball; 24. Grating scale; 25. Supplementary light and reflecting cover. Specific implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0044] Please refer to Figures 1-11 , the present invention provides a technical solution: a flexible production side wall robot workstation for an automobile welding production line, including a transport bottom plate frame 1, the transport bottom plate frame 1 is fixedly installed on the ground, and a detection area bottom plate 18 is fixedly installed on the ground on one side of the transport bottom plate frame 1, and the detection area bottom plate 18 is butted against the transport bottom plate frame 1. A disc unloading bottom plate 20 is fixedly installed on the ground on one side of the detection area bottom plate 18, and the disc unloading bottom plate 20 is butted against the detection area bottom plate 18 on one side. Roller transport boxes 3 are respectively fixedly installed on the outer surfaces of the transport bottom plate frame 1, the detection area bottom plate 18 and the disc unloading bottom plate 20, and guiding tracks 2 are respectively fixedly installed on the outer surfaces of both sides of the detection area bottom plate 18, the disc unloading bottom plate 20 and the transport bottom plate frame 1. A movable transport bottom plate 4 is placed on the outer surface of the roller transport box 3, and a vehicle fixing fixture 9 is snap-fitted and installed on the outer surface of the movable transport bottom plate 4. An insertion and engagement mechanism is provided between the vehicle fixing fixture 9 and the movable transport bottom plate 4, and the vehicle fixing fixture 9 can be conveniently fixed and quickly replaced through the insertion and engagement mechanism.

[0045] The movable transport base plate 4 can be moved on the transport base plate rack 1, the inspection area base plate 18 and the tray unloading base plate 20 through the roller transport box 3, facilitating the movement and assembly line processing of the vehicle frame.

[0046] The plug-in engagement mechanism includes: transverse positioning blocks 8, which are respectively fixedly installed on the outer surfaces of both sides of the movable transport base plate 4, and longitudinal positioning blocks 10 are fixedly installed on the other two sides of the movable transport base plate 4. The outer surfaces of the transverse positioning blocks 8 and the longitudinal positioning blocks 10 are both inclined. A spring plug rod 11 is slidably installed on the outer surface of the longitudinal positioning block 10. One end of the spring plug rod 11 is inserted into the vehicle fixing fixture 9, and the outer surfaces of the vehicle fixing fixture 9 are respectively fitted with the outer surfaces of the transverse positioning blocks 8 and the longitudinal positioning blocks 10.

[0047] Before processing, the vehicle fixing fixture 9 with the vehicle frame installed needs to be lifted by a hoist or a robotic arm and inserted onto the outer surface of the movable transport base plate 4. The vehicle fixing fixture 9 is limited by the transverse positioning blocks 8 and the longitudinal positioning blocks 10. The inclined design of the outer surfaces of the transverse positioning blocks 8 and the longitudinal positioning blocks 10 enables the vehicle fixing fixture 9 to be positioned more easily when being placed. At the same time, after the vehicle fixing fixture 9 is placed, the spring plug rod 11 will automatically snap into the inside of the vehicle fixing fixture 9, facilitating the replacement of the vehicle fixing fixture 9. Also, after the side wall of the vehicle frame is welded, it is convenient to disassemble. Through the detachable design of the vehicle fixing fixture 9 and the movable transport base plate 4, it is convenient to carry out welding processing on vehicle frames of different models, improving the working efficiency during welding.

[0048] An installation block 5 is fixedly installed on the outer surface of the side of the movable transport base plate 4 away from the vehicle fixing fixture 9. An elastic sliding mechanism is provided between the installation block 5 and the guide rail 2. The elastic sliding mechanism facilitates the restriction and guidance of the movement of the movable transport base plate 4 and can quickly separate the movable transport base plate 4 from the guide rail 2.

[0049] The installation of the installation block 5 realizes the fixation of the strong spring push rod 6 and the slider roller 7. When the strong spring push rod 6 and the slider roller 7 fail or are damaged, the whole can be replaced by disassembling the installation block 5, improving the convenience during maintenance.

[0050] The elastic sliding mechanism includes: a strong spring push rod 6, which is slidably installed inside the installation block 5, and a slider roller 7 is slidably installed on the outer surface of the installation block 5. The installation block 5 is engaged with the slider roller 7, and one end outer surface of the slider roller 7 is fitted with the outer surface of the guide rail 2, and the guide rail 2 is engaged with the slider roller 7.

[0051] Through the contact between the slider roller 7 and the guiding track 2, when the roller transport box 3 is started to drive the moving transport bottom plate 4 to move, it will not deviate, so as to guide and restrict the moving transport bottom plate 4. At the same time, by pushing the strong spring push rod 6, the slider roller 7 can slide inside the mounting block 5, so that the slider roller 7 can be separated from the guiding track 2, and when the moving transport bottom plate 4 and the vehicle fixing fixture 9 with a vehicle frame are placed inside the transport bottom plate rack 1, they can be conveniently clamped into the guiding track 2, and it is convenient to place and fix the moving transport bottom plate 4 above the transport bottom plate rack 1.

[0052] On the ground of the outer surfaces on both sides of the transport bottom plate rack 1, a moving platform 12 is fixedly installed, and a welding robot arm 13 is fixedly installed on the outer surface of the moving platform 12. A grating ruler 24 is fixedly installed on the outer surface of one end of the welding robot arm 13, and the other end of the grating ruler 24 is fixedly installed on the outer surface of one side of the moving platform 12. A welding torch cleaner 14 is fixedly installed on the ground on one side of the moving platform 12, and the cleaning end of the welding torch cleaner 14 faces the welding robot arm 13.

[0053] When the moving transport bottom plate 4 moves to one side of the welding robot arm 13 and is fixed, the moving platform 12 will adjust the position of the welding robot arm 13 according to the vehicle frame model to be processed, and improve the accuracy of the movement of the welding robot arm 13 according to the grating ruler 24, so that the welding robot arm 13 can be adjusted flexibly. After the side surround of the vehicle frame is welded, the outer surface of the welding torch of the welding robot arm 13 can be cleaned by the welding torch cleaner 14 to improve the welding quality of the welding robot arm 13. At the same time, the position of the welding robot arm 13 can be adjusted according to different vehicle frame models, which is convenient for welding different models of vehicle frames.

[0054] A positioning strip 15 is fixedly installed on the outer surface of the moving transport bottom plate 4, and a positioning lifting mechanism is arranged between the positioning strip 15 and the roller transport box 3. Through the positioning lifting mechanism, the vehicle fixing fixture 9 and the vehicle frame can stop above the transport bottom plate rack 1 and the inspection area bottom plate 18, so that the vehicle frame can be automatically positioned and fixed during welding and inspection. The positioning lifting mechanism includes: a positioning micro switch 16, which is fixedly installed on the side surface of the roller transport box 3. The positioning micro switch 16 is close to the positioning strip 15, and the outer surface of the positioning strip 15 is in contact with the outer surface of the positioning micro switch 16. Positioning cylinders 17 are fixedly installed on the outer surfaces of the transport bottom plate rack 1 and the inspection area bottom plate 18 respectively, and the positioning cylinders 17 are located inside the roller transport box 3. The outer surface of the output end of the positioning cylinder 17 is in contact with the outer surface of the moving transport bottom plate 4.

[0055] When the mobile transport base plate 4 moves to one side of the welding robot arm 13 or above the inspection area base plate 18, it will drive the positioning bar 15 to move together, so that after the positioning bar 15 reaches the specified position, it can simultaneously trigger the positioning micro switches 16 at both ends of the roller transport box 3. At this time, the positioning cylinder 17 will start and contact the mobile transport base plate 4, and at the same time will stop the operation of the roller transport box 3, so that the mobile transport base plate 4 can be stopped and fixed, which is convenient for welding the side panel of the frame and checking the welding position of the side panel of the frame.

[0056] Visual inspection robots 19 are fixedly installed on the ground at both sides of the inspection area bottom plate 18 , and a fill light reflector 25 is fixedly installed on the visual inspection end of the visual inspection robot 19 .

[0057] The visual inspection robot 19 can be used to inspect the welding position of the completed frame side panel. The camera and image processing algorithm of the visual inspection robot 19 can be used to monitor and analyze the position, shape and weld quality of the frame side panel in real time. At the same time, the welding position is supplemented by the fill-light reflector 25, so that the welding position of the frame side panel can be viewed more clearly by the visual inspection robot 19. When welding defects or component positioning deviations occur in the frame, timely feedback can be given to the control system and an alarm can be issued to facilitate adjustment and correction and reduce losses.

[0058] Multi-stage hydraulic jacking rods 22 are fixedly installed on the outer surfaces of both ends of the unloading base plate 20, and the multi-stage hydraulic jacking rods 22 are located inside the roller transport box 3. A guide pushing mechanism is provided between the unloading base plate 20 and the strong spring push rod 6. Through the guide pushing mechanism, the strong spring push rod 6 can be automatically pushed into the mounting block 5, so that the slider roller 7 can be automatically separated from the guide rail 2, so that the welded frame and mobile transport base plate 4 and other parts can be removed from the guide rail 2 and sent to the unloading finished product area.

[0059] When the frame passes the inspection of the visual inspection robot 19, the roller transport box 3 will start and send out the mobile transport base plate 4, so that the mobile transport base plate 4 can move to the top of the unloading base plate 20. At the same time, when the mobile transport base plate 4 enters the top of the unloading base plate 20, the inclined surface of the guide limit side plate 21 will fit with the outer surface of the ball 23, so that the strong spring push rod 6 can move more easily, and as the mobile transport base plate 4 moves, the strong spring push rod 6 can be gradually pushed into the mounting block 5 automatically, so that the slider roller 7 can be separated from the guide rail 2, and after moving to the unloading position, the roller transport box 3 is stopped and the multi-stage hydraulic lifting rod 22 is started, so that the mobile transport base plate 4 can be lifted, and the slider roller 7 can be automatically separated from the guide rail 2, so that the workers can use tools to remove the mobile transport base plate 4 from the welding production line.

[0060] The guiding and pushing mechanism includes: guiding and limiting side plates 21, which are fixedly arranged on the outer surfaces of both sides of the unloading plate bottom plate 20. One end of the guiding and limiting side plate 21 close to the detection area bottom plate 18 is designed to be inclined. A ball 23 is rotatably installed on the outer surface of the strong spring push rod 6, and the outer surface of the ball 23 is in contact with the outer surface of the guiding and limiting side plate 21.

[0061] After the moving transportation bottom plate 4 is lifted, tools can be used to lift the moving transportation bottom plate 4 and the vehicle fixing fixture 9 and send them to the separation area, separate the vehicle fixing fixture 9 and the moving transportation bottom plate 4 from the vehicle frame, and the moving transportation bottom plate 4 can be moved to the starting end of the vehicle frame welding line to facilitate the rapid recycling of the moving transportation bottom plate 4.

[0062] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible production side wall robot workstation for an automobile welding production line, comprising a transportation bottom plate frame (1), the transportation bottom plate frame (1) is fixedly installed on the ground, and a detection area bottom plate (18) is fixedly installed on the ground on one side of the transportation bottom plate frame (1), and the detection area bottom plate (18) is butted against the transportation bottom plate frame (1). A disk unloading bottom plate (20) is fixedly installed on the ground on one side of the detection area bottom plate (18), and one side of the disk unloading bottom plate (20) is butted against the detection area bottom plate (18). Roller transportation boxes (3) are respectively fixedly installed on the outer surfaces of the transportation bottom plate frame (1), the detection area bottom plate (18) and the disk unloading bottom plate (20), and guide rails (2) are respectively fixedly installed on the outer surfaces of both sides of the detection area bottom plate (18), the disk unloading bottom plate (20) and the transportation bottom plate frame (1), and it is characterized in that: A moving transport bottom plate (4) is placed on the outer surface of the roller transport box (3), and a vehicle fixing fixture (9) is clamped and installed on the outer surface of the moving transport bottom plate (4). An insertion and engagement mechanism is provided between the vehicle fixing fixture (9) and the moving transport bottom plate (4), which facilitates the fixing and rapid replacement of the vehicle fixing fixture (9).

2. The flexible production side wall robot workstation of an automobile welding production line according to claim 1, wherein: The insertion and engagement mechanism includes: a lateral positioning block (8), which is respectively fixedly installed on the outer surfaces of both sides of the moving transport bottom plate (4), and longitudinal positioning blocks (10) are fixedly installed on the other two sides of the moving transport bottom plate (4). The outer surfaces of the lateral positioning block (8) and the longitudinal positioning block (10) are both inclined. A spring insertion rod (11) is slidably installed on the outer surface of the longitudinal positioning block (10). One end of the spring insertion rod (11) is inserted into the vehicle fixing fixture (9), and the outer surfaces of the vehicle fixing fixture (9) are respectively fitted with the outer surfaces of the lateral positioning block (8) and the longitudinal positioning block (10).

3. A flexible production side panel robot workstation for an automobile welding production line according to claim 1, characterized in that: An installation block (5) is fixedly installed on the outer surface of one side of the moving transport bottom plate (4) away from the vehicle fixing fixture (9), and an elastic sliding mechanism is provided between the installation block (5) and the guide rail (2). The elastic sliding mechanism facilitates the restriction and guidance of the movement of the moving transport bottom plate (4) and can quickly separate the moving transport bottom plate (4) from the guide rail (2).

4. A flexible production side panel robot workstation for an automobile welding production line according to claim 3, characterized in that: The elastic sliding mechanism includes: a strong spring push rod (6), which is slidably installed inside the installation block (5), and a slider roller (7) is slidably installed on the outer surface of the installation block (5). The installation block (5) is engaged with the slider roller (7), and one end outer surface of the slider roller (7) is fitted with the outer surface of the guide rail (2), and the guide rail (2) is engaged with the slider roller (7).

5. A flexible production sidewall robot workstation for an automobile welding production line according to claim 1, characterized in that: Moving platforms (12) are fixedly installed on the ground on both outer surfaces of the transport bottom plate frame (1), and a welding robotic arm (13) is fixedly installed on the outer surface of the moving platform (12). A grating scale (24) is fixedly installed on the outer surface of one end of the welding robotic arm (13), and the other end of the grating scale (24) is fixedly installed on the outer surface of one side of the moving platform (12). A welding torch cleaner (14) is fixedly installed on the ground on one side of the moving platform (12), and the cleaning end of the welding torch cleaner (14) faces the welding robotic arm (13).

6. A flexible production side panel robot workstation for an automobile welding production line according to claim 1, characterized in that: A positioning strip (15) is fixedly installed on the outer surface of the moving transport bottom plate (4), and a positioning and lifting mechanism is provided between the positioning strip (15) and the roller transport box (3). The positioning and lifting mechanism enables the vehicle fixing fixture (9) and the vehicle frame to stop above the transport bottom plate frame (1) and the inspection area bottom plate (18), allowing the vehicle frame to be automatically positioned and fixed during welding and inspection.

7. A flexible production sidewall robot workstation for an automobile welding production line according to claim 6, characterized in that: The positioning and lifting mechanism includes: a positioning microswitch (16), the positioning microswitch (16) is fixedly installed on the side surface of the roller transport box (3), the positioning microswitch (16) is close to the positioning strip (15), and the outer surface of the positioning strip (15) is in contact with the outer surface of the positioning microswitch (16). The outer surfaces of the transport bottom plate frame (1) and the detection area bottom plate (18) are respectively fixedly installed with positioning cylinders (17), and the positioning cylinders (17) are located inside the roller transport box (3). The outer surface of the output end of the positioning cylinder (17) is in contact with the outer surface of the moving transport bottom plate (4).

8. A flexible production side panel robot workstation for an automobile welding production line according to claim 7, characterized in that: Visual inspection robots (19) are fixedly installed on the ground on both sides of the detection area bottom plate (18), and a supplementary light reflecting cover (25) is fixedly installed at the visual inspection end of the visual inspection robot (19).

9. A flexible production side panel robot workstation for an automotive welding production line according to claim 1, characterized in that: Multi-stage hydraulic lifting rods (22) are fixedly installed on the outer surfaces at both ends of the disk unloading bottom plate (20), and the multi-stage hydraulic lifting rods (22) are located inside the roller transport box (3). A guiding and pushing mechanism is provided between the disk unloading bottom plate (20) and the strong spring push rod (6). Through the guiding and pushing mechanism, the strong spring push rod (6) can be automatically pushed into the mounting block (5), so that the slider roller (7) can be automatically separated from the guiding track (2), and the welded vehicle frame and parts such as the moving transport bottom plate (4) can be removed from the guiding track (2) and sent to the finished product area for blanking.

10. A flexible production side panel robot workstation for an automotive welding production line according to claim 9, characterized in that: The guiding and pushing mechanism includes: guiding and limiting side plates (21), the guiding and limiting side plates (21) are fixedly arranged on the outer surfaces on both sides of the disk unloading bottom plate (20). One end of the guiding and limiting side plate (21) close to the detection area bottom plate (18) is designed to be inclined. A ball (23) is rotatably installed on the outer surface of the strong spring push rod (6), and the outer surface of the ball (23) is in contact with the outer surface of the guiding and limiting side plate (21).

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