An automated welding production line and method for excavator boom

Abstract

The application discloses an automatic welding production line and a production method for excavator movable arms, relates to the technical field of excavator movable arm production, and comprises a feeding conveying device and a discharging conveying device, feeding conveying device and discharging conveying device are respectively provided with feeding and discharging identification systems above, feeding conveying device and discharging conveying device are sequentially provided with No. 1, No. 2, No. 3 and No. 4 welding workstations, wherein No. 1, No. 2 and No. 3 welding workstations are main weld joint welding workstations, and No. 4 welding workstation is a short weld joint welding workstation; the automatic welding production line is further provided with No. 1 AGV carrying forklift and No. 2 AGV carrying forklift which are convenient for carrying excavator movable arms. The main weld joint and the short weld joint of the excavator movable arm are split and operated, welding work of multiple excavator movable arms can be completed in the same time, the production cost of equipment is reduced, automatic carrying operation can be realized, the labor input is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of excavator boom manufacturing technology, and specifically discloses an automated welding production line and manufacturing method for excavator booms. Background Technology

[0002] The boom is a working device of an excavator. Because the connecting arm connected to the frame is relatively long, it is commonly called the boom. The main function of the excavator boom is to control the digging and loading actions of the bucket. Excavator booms generally have a box-type structure, mainly composed of upper and lower main plates, two side plates, a boom seat sleeve, and a boom center sleeve. During the production process of an excavator boom, the various components are first assembled into a whole, then reinforced by welding, and finally ground and finished.

[0003] The invention patent with application publication number CN114161017A discloses an automatic welding equipment and welding method for structural components of a large excavator boom, including a welding positioner, a lifting mechanism, a clamping mechanism and a welding mechanism; the welding positioner is provided with a lifting mechanism; the lifting mechanism is provided with a clamping mechanism; the welding mechanism is movably mounted on a lifting cantilever mechanism.

[0004] The main body and side plates of the excavator boom form the main frame structure, and the contact surface between them is large. Therefore, to ensure the overall stability of the boom structure, the weld between the main body and side plates is the main weld, requiring a long welding time. The connection structures of other components are short welds, with shorter welding times. The disclosed patented automatic welding equipment uses a welding positioner to weld the main and short welds of the excavator boom in one piece. Because the short welds of the excavator boom have diverse structural forms, the welding positioner needs to rotate the excavator boom at multiple angles during the welding process to achieve welding. However, the main weld of the excavator boom has a simple structure and can be welded without rotating the excavator boom. Therefore, the welding positioner must be equipped with a rotation mechanism to complete the welding operation. Currently, most welding production lines are equipped with multiple welding positioners, each requiring a rotation mechanism, resulting in high equipment production costs. Furthermore, the excavator boom is large, and traditional manual handling is time-consuming and labor-intensive. Even with handling equipment, complete automation cannot be achieved, resulting in low automation and low production efficiency in the welding production line, making it uncompetitive in the industry. Summary of the Invention

[0005] This invention addresses the problems of high production costs, low automation, and low production efficiency in the current excavator boom manufacturing process by providing an automated welding production line and method for excavator booms.

[0006] To achieve the above objectives, in a first aspect, the present invention provides the following technical solution:

[0007] An automated welding production line for an excavator boom includes a loading conveyor and an unloading conveyor. A loading identification system and an unloading identification system are respectively installed above the loading and unloading conveyors. Welding workstations No. 1, No. 2, No. 3, and No. 4 are sequentially arranged between the loading and unloading conveyors. Welding workstations No. 1, No. 2, and No. 3 are main weld seam welding workstations, while welding workstation No. 4 is a short weld seam welding workstation. The line also includes a No. 1 AGV (Automated Guided Vehicle) forklift and a No. 2 AGV forklift for easy handling of the excavator boom. The loading and unloading conveyors are responsible for storing and placing the excavator booms. The loading and unloading identification systems can dynamically identify the excavator booms on these conveyors. Two AGV (Automated Guided Vehicle) forklifts are responsible for transferring the excavator booms. Welding stations one, two, and three first perform welding operations on the main weld seams, and then welding station four performs welding operations on the short weld seams. This automated welding production line breaks down the main and short weld seams of the excavator boom into separate operations, allowing the welding of multiple excavator booms to be completed within the same timeframe. This reduces equipment production costs, and the use of AGV forklifts enables automated handling, reducing manpower and improving production efficiency.

[0008] Preferably, both the loading and unloading conveying devices include a pair of parallel conveyor bases. A conveyor platform is fixedly installed on the conveyor base, and a conveyor belt capable of holding the excavator boom is slidably connected inside the conveyor platform. A conveyor belt controller for controlling the start and stop of the conveyor belt is provided on the side of the conveyor platform. A first AGV forklift can transport the excavator boom from the previous process to one end of the loading conveying device. Under the movement of the conveyor belt, the excavator boom moves to the other end of the loading conveying device, where a second AGV forklift transports the excavator boom to the welding workstation. After the welding work is completed, the second AGV forklift transports the excavator boom to the unloading conveying device. By setting up loading and unloading conveying devices at the beginning and end of the automated welding production line, the time for the excavator boom to enter and exit the automated welding production line can be shortened, transportation efficiency can be improved, and no manual intervention is required throughout the process, effectively reducing labor costs.

[0009] Preferably, both the loading and unloading identification systems include a support frame. A rodless cylinder is mounted on the top beam of the support frame, and a 3D vision camera is slidably mounted on the slide of the rodless cylinder. The 3D vision camera is connected to the piston of the rodless cylinder via a cable chain. The 3D vision camera in the loading and unloading identification systems can identify the excavator boom. After the excavator boom moves into the identification area of ​​the 3D vision camera, a control signal can be sent to the second AGV transport forklift, causing the second AGV transport forklift to transport the excavator boom. Furthermore, the 3D vision camera, connected to the piston of the rodless cylinder via the cable chain, can move horizontally on the top beam of the support frame, thereby expanding the identification area of ​​the 3D vision camera and improving the identification capabilities of the loading and unloading identification systems. By setting up the loading and unloading identification systems, the automation level of the automated welding production line is enhanced, and it can better cooperate with the second AGV transport forklift for handling operations.

[0010] Preferably, welding workstations 1, 2, and 3 all include a main weld welding robot arm. The main weld welding robot arm is mounted on a first support frame, on which a first cleaning station is installed. The first cleaning station is located below the main weld welding robot arm, and the first support frame is mounted on a first slide. The main weld welding robot arm can perform welding operations on the excavator boom. During operation, the welding torch generates spatter, which can cause clogging. By setting up the first cleaning station below the main weld welding robot arm, cleaning agent can be sprayed onto the welding torch to ensure unobstructed flow, increase torch durability, and improve weld quality. The first support frame can slide on the first slide, increasing the flexibility of the main weld welding robot arm and expanding its working area.

[0011] Preferably, a positioner fixed base and a positioner sliding base are provided on one side of the first slide. The positioner sliding base is slidably installed inside the positioner servo slide. A first positioning clamping device is installed on both the positioner fixed base and the positioner sliding base. The first positioning clamping device can firmly clamp the excavator boom. Since the positioner sliding base can slide inside the positioner servo slide, the first positioning clamping device can clamp excavator booms of different sizes, thus making it suitable for various models of excavator booms.

[0012] Preferably, the fourth welding workstation includes a short weld welding robot arm, which is mounted on a second support frame. A second cleaning station is mounted on the second support frame and is located below the short weld welding robot arm. The second support frame is mounted on a second slide.

[0013] Preferably, a column fixing base and a column sliding base are provided on one side of the second slide. The column sliding base is slidably installed inside the column servo slide. A column is vertically installed on both the column fixing base and the column sliding base. A second lifting servo motor and a second lifting reducer are installed on the top of the column. A linear guide is provided on the inner side of the column, and a tooling flipping mechanism is slidably installed on the linear guide. A second positioning clamping device is installed on the tooling flipping mechanism. Welding workstation No. 4 is a working platform for processing short welds on the excavator boom. By installing the tooling flipping mechanism on the linear guide, the excavator boom clamped by the second positioning clamping device can be flipped, allowing the short weld welding robot arm to weld short welds of different structural forms. Furthermore, the tooling flipping mechanism can slide up and down along the linear guide, making it more flexible and ensuring that the short weld welding robot arm can accurately weld short welds at the corners of the excavator boom, thus guaranteeing the welding quality of the excavator boom.

[0014] Preferably, both the first positioning and clamping device and / or the second positioning and clamping device include a clamping base, on which a first mounting frame is mounted. A lifting screw is provided inside the first mounting frame. A second lifting servo motor and a second lifting reducer are mounted on one end of the lifting screw that extends out of the first mounting frame. A lifting slider is provided on the first mounting frame. A positioning fixture base is mounted on the lifting slider. A second mounting frame is mounted on the positioning fixture base. A clamping screw is provided inside the second mounting frame. A clamping motor and a clamping reducer are mounted on one end of the clamping screw that extends out of the second mounting frame. A first clamping slider and a second clamping slider are provided on the second mounting frame. Clamping fixtures are mounted on both the first and second clamping sliders. The two clamping fixtures on the first and second clamping sliders firmly clamp one end of the excavator boom. By setting a first clamping slider and a second clamping slider, one end of the excavator boom can be firmly clamped in the first positioning clamping device and / or the second positioning clamping device. The lifting slider can slide up and down along the first mounting frame, thereby adjusting the height position of the excavator boom and making it more convenient for the excavator boom to perform welding work.

[0015] Preferably, both the No. 1 and No. 2 AGV transport forklifts include a mast, on which a lifting frame is slidably mounted, and a transfer positioning device is fixedly installed. When transporting the excavator boom, the No. 1 and No. 2 AGV transport forklifts can adjust the height of the transfer positioning device via the lifting frame, making the height of the transfer positioning device lower than the height of the excavator boom. The excavator boom is then placed on the transfer positioning device, and then the No. 1 and No. 2 AGV transport forklifts transport the excavator boom to the designated position. Installing the transfer positioning device on the lifting frame ensures that the excavator boom can be transported accurately and smoothly, improving the smoothness of the operation of the No. 1 and No. 2 AGV transport forklifts and guaranteeing the transport rate of the excavator boom.

[0016] On the other hand, the present invention also provides a production method for an automated welding production line for an excavator boom, comprising the following steps:

[0017] S1. After the excavator boom is processed in the previous process, the No. 1 AGV transport forklift will transfer the excavator boom to the loading and conveying device.

[0018] S2, the excavator boom moves horizontally along the conveyor belt. When the excavator boom moves into the recognition range of the 3D vision camera, the 3D vision camera marks the excavator boom and sends the status of the excavator boom to the production Kanban on the side of the production line. The 3D vision camera sends the positioning signal of the excavator boom to the central control system. The central control system judges the working status of welding workstations No. 1, No. 2 and No. 3. When the central control system detects that there is an idle workstation among welding workstations No. 1, No. 2 and No. 3, it sends a signal to the No. 2 AGV transport forklift. The No. 2 AGV transport forklift places the excavator boom into the idle workstation.

[0019] S3, after the first positioning and clamping device clamps the excavator arm, the main weld welding robot arm welds the excavator arm. After the main weld welding robot arm completes the welding, it sends a completion signal to the central control system and sends the status of the excavator arm to the production Kanban on one side of the production line. The central control system sends a signal to the second AGV transport forklift, and the second AGV transport forklift places the excavator arm into the fourth welding workstation.

[0020] S4, after the second positioning and clamping device clamps the excavator arm, the short weld welding robot arm welds the excavator arm. After the short weld welding robot arm completes the welding, it sends a completion signal to the central control system. The central control system sends a signal to the second AGV transport forklift, and the second AGV transport forklift transfers the excavator arm to the unloading conveyor.

[0021] S5, when the 3D vision camera above the material unloading conveyor detects an excavator boom, the material unloading conveyor transports the excavator boom to the next process, and the production dashboard displays that the welding work on the excavator boom is complete.

[0022] As can be seen from the above technical solutions, the present invention has the following advantages:

[0023] 1. The automated welding production line of this invention separates the main weld and short weld of the excavator boom into separate operations. Only the tooling reversing mechanism needs to be installed in the welding workstation for processing the short weld. The welding work of multiple excavator booms can be completed in the same time. Compared with the production line that welds the main weld and short weld in one piece, the cost of the equipment is greatly reduced.

[0024] 2. By configuring a No. 1 AGV transport forklift and a No. 2 AGV transport forklift in the production line, the present invention can shorten the transfer time of the excavator boom, improve the transportation efficiency, and eliminate the need for manual intervention throughout the process, thereby effectively reducing labor costs.

[0025] 3. This invention has a simple configuration and flexible structure. The welding workstation can be reasonably arranged according to the production capacity requirements. The overall production line is easy to disassemble and assemble, has a stable structure, strong versatility, and can be applied to various models of excavator booms, with strong flexibility.

[0026] 4. The automated welding production line in this invention changes the original "one person, one workstation" production model, frees up the labor force of operators, increases production capacity, and has strong competitiveness in the same industry.

[0027] Furthermore, the design principle of this invention is reliable, the structure is simple, and it has a very wide range of application prospects. Attached Figure Description

[0028] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the automated welding production line according to a specific embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the loading and unloading conveying device according to a specific embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the loading and unloading identification system according to a specific embodiment of the present invention;

[0032] Figure 4 These are schematic diagrams of the structures of welding workstations No. 1, 2, and 3 according to a specific embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the No. 4 welding workstation according to a specific embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the column structure according to a specific embodiment of the present invention;

[0035] Figure 7 These are schematic diagrams of the first and second positioning and clamping devices according to a specific embodiment of the present invention;

[0036] Figure 8These are schematic diagrams of the No. 1 and No. 2 AGV transport forklifts according to specific embodiments of the present invention;

[0037] In the diagram: 1. Material conveying device, 101. Conveyor base, 102. Conveyor table, 103. Conveyor belt, 104. Conveyor belt controller; 2. AGV No. 1 handling forklift, 201. Mast, 202. Lifting frame, 203. Transfer positioning device; 3. Material identification system, 301. Support, 302. Rodless cylinder, 303. 3D vision camera, 304. Cable chain; 4. Welding workstation No. 1, 401. Main weld welding machinery. 402. First support frame, 403. First cleaning gun station, 404. First slide, 405. Positioner fixed base, 406. Positioner sliding base, 407. Positioner servo slide, 5. Second welding workstation, 6. Third welding workstation, 7. Production Kanban, 8. Fourth welding workstation, 801. Short weld seam welding robotic arm, 802. Second support frame, 803. Second cleaning gun station, 804. Second slide, 805. Standing 806. Column fixed base; 807. Column sliding base; 808. Column servo slide; 809. Column; 810. First lifting servo motor; 811. First lifting reducer; 812. Linear rail; 813. Tooling tilting mechanism; 9. Second AGV transport forklift; 10. Unloading conveyor; 11. Unloading recognition system; 12. Excavator boom; 13. First positioning and clamping device; 1301. Clamping base; 1302. First mounting... Frame, 1303. Lifting screw, 1304. Second lifting servo motor, 1305. Second lifting reducer, 1306. Lifting slider, 1307. Positioning fixture base, 1308. Second mounting frame, 1309. Clamping screw, 1310. Clamping motor, 1311. Clamping reducer, 1312. First clamping slider, 1313. Second clamping slider, 1314. Clamping fixture, 14. Second positioning clamping device. Detailed Implementation

[0038] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0039] Please see the appendix Figure 1-8This specific embodiment provides an automated welding production line for excavator booms, including a feeding conveyor 1 and an unloading conveyor 10. A feeding identification system 3 and an unloading identification system 11 are respectively installed above the feeding conveyor 1 and the unloading conveyor 10. Welding workstations 4, 5, 6, and 8 are sequentially arranged between the feeding conveyor 1 and the unloading conveyor 10. Welding workstations 4, 5, and 6 are main weld seam welding workstations, while welding workstation 8 is a short weld seam welding workstation. The production line also includes a first AGV forklift 2 and a second AGV forklift 9 for easy handling of the excavator boom. A production Kanban board 7 is also installed on one side of the automated welding production line. The production dashboard 7 displays the welding progress of the excavator boom 12 in real time. The loading and unloading conveyors 1 and 10 are responsible for storing and placing the excavator booms. The loading and unloading identification systems 3 and 11 dynamically identify the excavator booms on the loading and unloading conveyors 1 and 10. The first AGV forklift 2 and the second AGV forklift 9 are responsible for transferring the excavator booms. Welding workstations 4, 5, and 6 first perform welding operations on the main weld seams, and then welding workstation 8 performs welding operations on the short weld seams. The automated welding production line of this invention breaks down the main and short weld seams of the excavator boom into separate operations, allowing the welding of multiple excavator booms to be completed within the same timeframe. This reduces equipment production costs, and the use of AGV forklifts enables automated handling operations, reducing manpower and improving production efficiency.

[0040] Both the loading conveyor 1 and the unloading conveyor 10 include a pair of parallel conveyor bases 101. A conveyor platform 102 is fixedly installed on the conveyor base 101. A conveyor belt 103 capable of holding the excavator boom 12 is slidably connected inside the conveyor platform 102. A conveyor belt controller 104 for controlling the start and stop of the conveyor belt 103 is provided on the side of the conveyor platform 102. The previous process before the welding operation of the excavator boom is the assembly operation, the main purpose of which is to assemble the components of the excavator boom and connect them into a whole by spot welding. After the excavator boom assembly operation is completed, the first AGV transport forklift 2 transports the excavator boom from the assembly operation to one end of the loading conveyor 1. Under the movement of the conveyor belt 103, the excavator boom moves to the other end of the loading conveyor 1. The second AGV transport forklift 9 then transports the excavator boom to the welding workstation. After the welding work is completed, the second AGV transport forklift 9 transports the excavator boom to the unloading conveyor 10. Finally, the unloading conveyor 10 sends the excavator boom out of the production line. The conveyor belt controller 104 controls the start and stop of the conveyor belt 103. When the excavator boom reaches saturation, the conveyor belt controller 104 stops the conveyor belt 103 to prevent the entire production line from becoming saturated due to an excessive number of excavator booms. By setting up the loading conveyor 1 and unloading conveyor 10 at the beginning and end of the automated welding production line, the time for the excavator boom to enter and exit the automated welding production line can be shortened, improving transportation efficiency. Furthermore, the entire process requires no manual intervention, effectively reducing labor costs.

[0041] Both the loading and unloading identification systems include a bracket 301. A rodless cylinder 302 is mounted on the top crossbeam of the bracket 301. A 3D vision camera 303 is slidably mounted on the slide of the rodless cylinder 302. The 3D vision camera 303 is connected to the piston of the rodless cylinder 302 via a cable chain 304. The 3D vision camera 303 in the loading and unloading identification systems 3 and 11 can identify the excavator boom. After the excavator boom moves into the identification area of ​​the 3D vision camera 303, a control signal can be sent to the second AGV transport forklift 9, causing the second AGV transport forklift 9 to transport the excavator boom. Furthermore, the 3D vision camera 303 is connected to the piston of the rodless cylinder 302 via the cable chain 304, which allows the 3D vision camera 303 to move horizontally on the top crossbeam of the bracket 301, thereby expanding the identification area of ​​the 3D vision camera 303 and improving the identification capability of the loading and unloading identification systems 3 and 11. By setting up the loading and unloading identification system 3 and the unloading identification system 11, the automation level of the automated welding production line is enhanced, which can better cooperate with the No. 2 AGV forklift 9 for handling operations.

[0042] Welding workstations 4 (No. 1), 5 (No. 2), and 6 (No. 3) all include a main weld welding robotic arm 401. The main weld welding robotic arm 401 is mounted on a first support frame 402, on which a first cleaning station 403 is installed. The first cleaning station 403 is located below the main weld welding robotic arm 401, and the first support frame 402 is mounted on a first slide block 404. The main weld welding robotic arm 401 can perform welding operations on the excavator boom. During operation, the welding torch will generate spatter, causing blockage. By setting up the first cleaning station 403 below the main weld welding robotic arm 401, cleaning agent can be sprayed onto the welding torch to ensure unobstructed flow, increase its durability, and improve weld quality. The first support frame 402 can slide on the first slide block 404, increasing the flexibility of the main weld welding robotic arm 401 and expanding its working area.

[0043] A positioner fixed base 405 and a positioner sliding base 406 are provided on one side of the first slide 404. The positioner sliding base 406 is slidably installed in the positioner servo slide 407. A first positioning clamping device 13 is installed on both the positioner fixed base 405 and the positioner sliding base 406. The first positioning clamping device 13 can firmly clamp the excavator boom. Since the positioner sliding base 406 can slide within the positioner servo slide 407, the first positioning clamping device 13 can clamp excavator booms of different sizes, thus making it suitable for various models of excavator booms.

[0044] Welding workstation 8 includes a short weld seam welding robotic arm 801, which is mounted on a second support frame 802. A second cleaning gun station 803 is mounted on the second support frame 802 and is located below the short weld seam welding robotic arm 801. The second support frame 802 is mounted on a second slide block 804. A column fixing base 805 and a column sliding base 806 are provided on one side of the second slide block 804. The column sliding base 806 is slidably mounted inside a column servo slide 807. A column 808 is vertically mounted on both the column fixing base 805 and the column sliding base 806. A first lifting servo motor 809 and a first lifting reducer 810 are mounted on the top of the column 808. A linear guide 811 is provided on the inner side of the column 808. A tooling flipping mechanism 812 is slidably mounted on the linear guide 811. A second positioning clamping device 14 is mounted on the tooling flipping mechanism 812. Welding workstation 8 is a working platform for processing short welds on the excavator boom. By installing a tooling tilting mechanism 812 on the rail 811, the excavator boom clamped by the second positioning clamping device 14 can be tilted, allowing the short weld welding robot arm to weld short welds of different structural forms. Furthermore, the tooling tilting mechanism 812 can slide up and down along the rail 811. The first lifting servo motor 809 provides power for the sliding of the tooling tilting mechanism 812, and the first lifting reducer 810 provides braking force, keeping the tooling tilting mechanism 812 at a fixed height on the rail 811. By installing the tooling tilting mechanism 812 on the rail 811, the tooling tilting mechanism 812 becomes more flexible, ensuring that the short weld welding robot arm 801 can accurately weld short welds in the corners of the excavator boom, thus guaranteeing the welding quality of the excavator boom.

[0045] The first positioning clamping device 13 and / or the second positioning clamping device 14 both include a clamping base 1301. A first mounting frame 1302 is mounted on the clamping base 1301. A lifting screw 1303 is disposed inside the first mounting frame 1302. A second lifting servo motor 1304 and a second lifting reducer 1305 are mounted on one end of the lifting screw 1303 that protrudes from the first mounting frame 1302. A lifting slider 1306 is disposed on the first mounting frame 1302. A positioning fixture base 1307 is mounted on the lifting slider 1306. A second lifting servo motor 1304 and a second lifting reducer 1305 are mounted on the positioning fixture base 1307. Mounting frame 1308, the second mounting frame 1308 is provided with a clamping screw 1309, the clamping screw 1309 protrudes from one end of the second mounting frame 1308 and is equipped with a clamping motor 1310 and a clamping reducer 1311, the second mounting frame 1308 is provided with a first clamping slider 1312 and a second clamping slider 1313, both the first clamping slider 1312 and the second clamping slider 1313 are equipped with clamping fixtures 1314, the two clamping fixtures 1314 on the first clamping slider 1312 and the second clamping slider 1313 firmly clamp one end of the excavator boom 12. By setting the first clamping slider 1312 and the second clamping slider 1313, one end of the excavator boom can be firmly clamped in the first positioning clamping device 13 and / or the second positioning clamping device 14. The second lifting servo motor 1304 and the second lifting reducer 1305 can control the height of the positioning fixture base 1307. The lifting slider 1306 can slide up and down along the first mounting frame 1302, thereby adjusting the height position of the excavator boom and making it more convenient for the excavator boom to perform welding work. The clamping motor 1310 and the clamping reducer 1311 can control the clamping distance between the first clamping slider 1312 and the second clamping slider 1313, so that the first clamping slider 1312 and the second clamping slider 1313 firmly clamp the excavator boom.

[0046] In addition, both AGV transport forklift 2 and AGV transport forklift 9 include a mast 201, on which a lifting frame 202 is slidably mounted. A transfer positioning device 203 is fixedly installed on the lifting frame 202. When transporting the excavator boom, AGV transport forklift 2 and AGV transport forklift 9 can adjust the height of the transfer positioning device 203 via the lifting frame 202, ensuring the height of the transfer positioning device 203 is lower than the height of the excavator boom. The excavator boom is then placed on the transfer positioning device 203, and then transported to the designated position by AGV transport forklift 2 and AGV transport forklift 9. Installing the transfer positioning device 203 on the lifting frame ensures precise and stable transport of the excavator boom, improving the smoothness of operation of AGV transport forklift 2 and AGV transport forklift 9 and guaranteeing the transport rate of the excavator boom.

[0047] The above text provides a detailed description of an embodiment of an automated welding production line for excavator booms. Based on the automated welding production line for excavator booms described in the above embodiment, this invention also provides a production method for an automated welding production line for excavator booms, corresponding to the above automated welding production line, comprising the following steps:

[0048] S1, After the excavator boom 12 is processed in the previous process, the No. 1 AGV transport forklift 2 will transfer the excavator boom 12 to the loading and conveying device 1.

[0049] S2, the excavator boom 12 moves horizontally along the conveyor belt 103. When the excavator boom 12 moves into the recognition range of the 3D vision camera 303, the 3D vision camera 303 marks the excavator boom 12 and sends the status of the excavator boom 12 to the production Kanban 7 on the side of the production line. The 3D vision camera 303 sends the positioning signal of the excavator boom 12 to the central control system. The central control system judges the working status of welding workstation 4, welding workstation 5 and welding workstation 6. When the central control system 14 detects that there is an idle workstation among welding workstation 4, welding workstation 5 and welding workstation 6, it sends a signal to the second AGV transport forklift 9. The second AGV transport forklift 9 places the excavator boom 12 into the idle workstation.

[0050] S3, after the first positioning and clamping device 13 clamps the excavator arm 12, the main weld welding robot arm 401 welds the excavator arm 12. After the main weld welding robot arm 401 completes the welding, it sends a completion signal to the central control system 14 and sends the status of the excavator arm 12 to the production Kanban 7 on the side of the production line. The central control system 14 sends a signal to the second AGV transport forklift 9, and the second AGV transport forklift 9 places the excavator arm 12 into the fourth welding workstation 8.

[0051] S4, after the second positioning and clamping device 14 clamps the excavator arm 12, the short weld welding robot arm 801 welds the excavator arm 12. After the short weld welding robot arm 801 completes the welding, it sends a completion signal to the central control system 14. The central control system 14 sends a signal to the second AGV transport forklift 9. The second AGV transport forklift 9 transfers the excavator arm 12 to the unloading conveyor 10.

[0052] S5, when the 3D vision camera 303 above the unloading conveyor 10 detects the presence of the excavator boom 12, the unloading conveyor 10 transports the excavator boom 12 to the next process, and the production Kanban 7 displays that the welding work on the excavator boom 12 has been completed.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automated welding production line for excavator booms, comprising a feeding conveyor (1) and an unloading conveyor (10), characterized in that, Above the feeding conveyor (1) and the unloading conveyor (10) are respectively a feeding identification system (3) and an unloading identification system (11). Between the feeding conveyor (1) and the unloading conveyor (10) are arranged a No. 1 welding workstation (4), a No. 2 welding workstation (5), a No. 3 welding workstation (6) and a No. 4 welding workstation (8). The No. 1 welding workstation (4), the No. 2 welding workstation (5), and the No. 3 welding workstation (6) are the main weld seam welding workstations, and the No. 4 welding workstation (8) is the short weld seam welding workstation. The No. 4 welding workstation (8) is equipped with a tooling flipping mechanism (812), while the No. 1 welding workstation (4), the No. 2 welding workstation (5), and the No. 3 welding workstation (6) are not equipped with tooling flipping mechanisms. It also includes a No. 1 AGV transport forklift (2) and a No. 2 AGV transport forklift (9) for easy handling of the excavator boom (12); the No. 1 AGV transport forklift (2) is used to transfer the excavator boom (12) to be welded to the loading conveyor (1); After the material feeding identification system (3) identifies the excavator boom (12) to be welded by the material feeding conveyor (1), it sends the positioning signal of the excavator boom (12) to the central control system. The central control system judges the working status of the No. 1 welding workstation (4), the No. 2 welding workstation (5) and the No. 3 welding workstation (6). When the central control system detects that there is an idle workstation among the No. 1 welding workstation (4), the No. 2 welding workstation (5) and the No. 3 welding workstation (6), it sends a signal to the No. 2 AGV transport forklift (9). The No. 2 AGV transport forklift (9) places the excavator boom (12) into the idle main weld welding workstation. After the main weld welding workstation completes the welding, it sends a completion signal to the main control system. The main control system sends a signal to the No. 2 AGV transport forklift (9), and the No. 2 AGV transport forklift (9) places the excavator boom (12) into the No. 4 welding workstation (8). After welding is completed at welding station 4 (8), a completion signal is sent to the main control system. The main control system sends a signal to AGV transport forklift 2 (9), which then transports the excavator boom (12) to the unloading conveyor (10).

2. An automated welding production line for an excavator boom according to claim 1, characterized in that, Both the loading conveyor (1) and the unloading conveyor (10) include a pair of parallel conveyor bases (101). A conveyor platform (102) is fixedly installed on the conveyor base (101). A conveyor belt (103) capable of holding an excavator boom (12) is slidably connected inside the conveyor platform (102). A conveyor belt controller (104) for controlling the start and stop of the conveyor belt (103) is provided on the side of the conveyor platform (102).

3. An automated welding production line for an excavator boom according to claim 1, characterized in that, Both the loading identification system (3) and the unloading identification system (11) include a bracket (301). A rodless cylinder (302) is installed on the top crossbeam of the bracket (301). A 3D vision camera (303) is slidably mounted on the slide of the rodless cylinder (302). The 3D vision camera (303) is connected to the piston of the rodless cylinder (302) via a drag chain (304).

4. An automated welding production line for an excavator boom according to claim 1, characterized in that, Welding workstation 1 (4), welding workstation 2 (5), and welding workstation 3 (6) all include a main weld welding robot arm (401). The main weld welding robot arm (401) is installed on the first support frame (402). The first support frame (402) is equipped with a first cleaning gun station (403). The first cleaning gun station (403) is located below the main weld welding robot arm (401). The first support frame (402) is located on the first slide (404).

5. An automated welding production line for an excavator boom according to claim 4, characterized in that, The first slide (404) is provided with a positioner fixed base (405) and a positioner sliding base (406) on one side. The positioner sliding base (406) is slidably installed in the positioner servo slide (407). The first positioning clamping device (13) is installed on both the positioner fixed base (405) and the positioner sliding base (406).

6. An automated welding production line for an excavator boom according to claim 1, characterized in that, Welding workstation No. 4 (8) includes a short weld welding robot arm (801), which is mounted on a second support frame (802). A second cleaning gun station (803) is mounted on the second support frame (802), which is located below the short weld welding robot arm (801). The second support frame (802) is located on a second slide (804).

7. An automated welding production line for an excavator boom according to claim 6, characterized in that, The second slide (804) is provided with a column fixed base (805) and a column sliding base (806) on one side. The column sliding base (806) is slidably installed in the column servo slide (807). A column (808) is vertically installed on both the column fixed base (805) and the column sliding base (806). A first lifting servo motor (809) and a first lifting reducer (810) are installed on the top of the column (808). A linear guide (811) is provided on the inner side of the column (808). A tooling flipping mechanism (812) is slidably installed on the linear guide (811). A second positioning clamping device (14) is installed on the tooling flipping mechanism (812).

8. An automated welding production line for an excavator boom according to claim 5 or 7, characterized in that, The first positioning clamping device (13) and / or the second positioning clamping device (14) both include a clamping base (1301). A first mounting frame (1302) is mounted on the clamping base (1301). A lifting screw (1303) is provided inside the first mounting frame (1302). A second lifting servo motor (1304) and a second lifting reducer (1305) are mounted on one end of the lifting screw (1303) that protrudes from the first mounting frame (1302). A lifting slider (1306) is provided on the first mounting frame (1302). A positioning fixture base (1307) is mounted on the lifting slider (1306). A second mounting... The frame (1308) has a clamping screw (1309) inside the second mounting frame (1308). The clamping screw (1309) is installed with a clamping motor (1310) and a clamping reducer (1311) at one end protruding from the second mounting frame (1308). The second mounting frame (1308) has a first clamping slider (1312) and a second clamping slider (1313). Both the first clamping slider (1312) and the second clamping slider (1313) are equipped with clamping fixtures (1314). The two clamping fixtures (1314) on the first clamping slider (1312) and the second clamping slider (1313) firmly clamp one end of the excavator boom (12).

9. An automated welding production line for an excavator boom according to claim 1, characterized in that, Both the No. 1 AGV transport forklift (2) and the No. 2 AGV transport forklift (9) include a mast (201), a lifting frame (202) is slidably mounted on the mast (201), and a transfer positioning device (203) is fixedly installed on the lifting frame (202).

10. A production method for an automated welding production line for an excavator boom according to any one of claims 1-9, characterized in that, Includes the following steps: S1, After the excavator boom (12) is processed in the previous process, the No. 1 AGV transport forklift (2) will transfer the excavator boom (12) to the loading conveyor (1); S2, the excavator arm (12) moves horizontally along the conveyor belt (103). When the excavator arm (12) moves into the recognition range of the 3D vision camera (303), the 3D vision camera (303) marks the excavator arm (12) and sends the status of the excavator arm (12) to the production kanban (7) on the side of the production line. The 3D vision camera (303) sends the positioning signal of the excavator arm (12) to the central control system. The central control system judges the working status of welding workstation 1 (4), welding workstation 2 (5) and welding workstation 3 (6). When the central control system detects that there is an idle workstation among welding workstation 1 (4), welding workstation 2 (5) and welding workstation 3 (6), it sends a signal to the second AGV transport forklift (9). The second AGV transport forklift (9) places the excavator arm (12) into the idle workstation. S3, after the first positioning clamping device (13) clamps the excavator arm (12), the main weld welding robot (401) welds the excavator arm (12). After the main weld welding robot (401) completes the welding, it sends a completion signal to the central control system and sends the status of the excavator arm (12) to the production board (7) on the side of the production line. The central control system sends a signal to the second AGV transport forklift (9), and the second AGV transport forklift (9) places the excavator arm (12) into the fourth welding workstation (8). S4, after the second positioning clamping device (14) clamps the excavator arm (12), the short weld welding robot (801) welds the excavator arm (12). After the short weld welding robot (801) completes the welding, it sends a completion signal to the central control system. The central control system sends a signal to the second AGV transport forklift (9). The second AGV transport forklift (9) transfers the excavator arm (12) to the unloading conveyor (10). S5, when the 3D vision camera (303) above the material conveying device (10) detects the presence of the excavator boom (12), the material conveying device (10) transports the excavator boom (12) to the next process, and the production dashboard (7) displays that the welding work on the excavator boom (12) has been completed.

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