Boom midsection production line and boom midsection production method

Abstract

The application relates to the technical field of production and manufacturing, and discloses a boom middle section production line and a boom middle section production method. The boom middle section production line places plate materials for butt welding of a boom middle section group through a feeding work station, and carries the plate materials to a centering device, a first butt work tool and a second butt work tool arranged in sequence through a plate material carrying device. The centering device is used for centering and positioning of the plate materials. The first butt work tool is used for butt clamping and positioning of side plates, partition plates and middle support shafts. The second butt work tool is used for butt clamping and positioning of bottom covers and cover plates in the plate materials. A spot welding device can perform spot welding work on the first butt work tool and the second butt work tool. Assembly hoisting equipment hoists and transfers the spot-welded assembly. A second welding work station is used for performing full welding work on the spot-welded assembly. The boom middle section production line disclosed by the application realizes flexible production of the boom middle section and reduces production cost.

Description

Technical Field

[0001] This application belongs to the field of manufacturing technology, specifically relating to a boom mid-section production line and a boom mid-section production method. Background Technology

[0002] In the manufacturing of construction machinery, robotic automated welding technology is being used more and more widely. Robotic automated welding technology refers to the technology that utilizes handling robots and welding robots to automatically perform assembly and welding tasks during the manufacturing process of construction machinery.

[0003] In the manufacturing process of excavators, the boom mid-section is a crucial component, primarily composed of side plates, cover plates, partitions, and support shafts. Due to the wide variety of models and sizes, and increasingly stringent requirements for welding quality and efficiency, the welding requirements for the boom mid-section have become even more stringent.

[0004] However, the traditional assembly of the boom midsection is done manually with the help of tooling and welding. The tooling has low applicability, usually only applicable to 1-2 product models, which is difficult to meet the current needs of producing multiple product models. In addition, the mechanical tooling in the heavy industry occupies a large area and has excessively high production costs. Summary of the Invention

[0005] The purpose of this application is to provide a boom mid-section production line and a boom mid-section production method to solve the problem that traditional boom assemblies have low applicability to tooling and are difficult to meet the needs of producing various product models at present.

[0006] To achieve the above objectives, the first aspect of this application provides a boom mid-section production line, the boom mid-section production line comprising: The loading station is used to place the plates used for welding the middle section of the boom; The first welding workstation includes a sheet metal handling device, a spot welding device, and an alignment device, a first set of alignment fixtures, and a second set of alignment fixtures arranged sequentially along a linear direction. The sheet metal handling device is used to transfer sheet metal between the alignment device, the first set of alignment fixtures, and the second set of alignment fixtures. The alignment device is used for centering and positioning the sheet metal. The first set of alignment fixtures is used for assembling and clamping the side plates, partitions, and central support shafts in the sheet metal. The second set of alignment fixtures is used for assembling and clamping the bottom cover and cover plate in the sheet metal. The spot welding device can move between the first set of alignment fixtures and the second set of alignment fixtures and is used to perform spot welding operations. The second welding workstation includes a full welding device and a full welding positioning fixture. The full welding positioning fixture is used to clamp and position the spot welding components completed in the second set of fixtures. The full welding device is arranged on one side of the full welding positioning fixture to perform full welding operations. A component hoisting device for hoisting and transferring the spot-welded component between the first set of tooling, the second set of tooling, and the full-weld positioning tooling.

[0007] As a further improvement to the above technical solution: In some embodiments, the first set of tooling includes: Flip support base; A flipping positioning fixture is rotatably mounted on the flipping support base, and the rotation axis of the flipping positioning fixture is aligned with its own length direction; wherein, the flipping positioning fixture has a first posture and a second posture; when the flipping positioning fixture is in the first posture, the loading and unloading sides of the flipping positioning fixture face upwards; when the flipping positioning fixture is in the second posture, the orientation of the loading and unloading sides of the flipping positioning fixture is parallel to the horizontal direction; and A flip drive module is disposed on the flip support base and driven and connected to the flip positioning fixture, and is used to drive the flip positioning fixture to rotate relative to the flip support base, so as to realize the rotation switching between the first posture and the second posture.

[0008] In some embodiments, the flipping positioning fixture includes: A flipping frame is rotatably mounted on the flipping support base; A clamping and positioning platform is mounted on the tilting frame. The clamping and positioning platform is equipped with a side plate width positioning pusher, a side plate width centering pusher, a side plate length positioning pusher, and a side plate length centering pusher. The spacing adjustment assembly includes an adjustment drive mechanism and an electromagnetic suction base. The adjustment drive mechanism is disposed on the flipping frame, and the electromagnetic suction base is aligned with the clamping and positioning platform and is drivenly connected to the adjustment drive mechanism. The adjustment drive mechanism is used to drive the electromagnetic suction base to move relative to the clamping and positioning platform along a first direction and a second direction. The first direction is parallel to the length direction of the clamping and positioning platform, and the second direction is parallel to the normal direction of the clamping and positioning platform.

[0009] In some embodiments, the first set of tooling further includes a tilting support module, the tilting support module comprising: A support drive assembly is disposed on the flip support base; and The support arm is driven to connect with the support drive assembly. In the initial state, the support arm is in a horizontal lying position. When the flipping positioning fixture is in the second position, the support drive component can drive the support arm to switch to a vertical support state to support the flipping positioning fixture.

[0010] In some embodiments, the second set of tooling includes a positioning base, a length positioning clamping module, a width positioning clamping module, a lifting module, and a clamping module; The positioning base is provided with a positioning area for positioning the bottom cover, and the length positioning clamping module, the width positioning clamping module, the lifting module and the pressing module are all disposed on the positioning base; The length positioning clamping module, the width positioning clamping module, the lifting module, and the pressing module are used together for positioning and clamping the bottom cover, the spot welding assembly, and the cover plate.

[0011] In some embodiments, the full-weld positioning fixture includes: A positioner is arranged on one side of the full welding device; A displacement and positioning fixture is mounted on the positioner and is used to clamp the spot welding assembly completed in the second set of tooling in the length direction, width direction and vertical direction.

[0012] In some embodiments, the boom mid-section production line further includes a material unloading workstation, which includes finished product unloading racks and multiple material unloading buffer racks arranged sequentially in a straight line. The unloading buffer rack is used to buffer the spot welding components transferred from the second set of tooling by the component hoisting equipment or the finished workpieces that have been fully welded and transferred from the second welding workstation; The finished product unloading rack is used to store the fully welded finished workpieces transferred from the second welding workstation by the component hoisting equipment.

[0013] In some embodiments, the first welding workstation further includes a horizontal moving track laid along the direction in which the centering device, the first set of tooling and the second set of tooling are arranged in sequence; Both the sheet metal handling device and the spot welding device are movably mounted on the horizontal moving track.

[0014] In some implementations, the boom mid-section production line also includes an interactive system and AGV trolleys; The interactive system includes an electrical control subsystem, a MES subsystem, and a LES subsystem. The material handling and detection module in the electrical control subsystem is used to monitor the remaining material status of the board on the loading workstation in real time and to interact with the MES subsystem to exchange production information. When the material tray area in the loading workstation is empty, the electrical control subsystem feeds back information to the MES subsystem, and the MES subsystem issues a material calling command to the LES subsystem. The LES subsystem then controls the AGV to first move the empty material rack away, and then transport the material tray with material to the preset position of the loading workstation.

[0015] In a second aspect, this application also provides a method for producing a boom mid-section, applied to a boom mid-section production line provided according to the first aspect above, the boom mid-section production method comprising: Determine the product formula for the boom mid-section to be produced, and prepare the sheet metal and set the working parameters of the boom mid-section production line according to the product formula; Start the boom mid-section production line to begin production; The side plate is transferred from the loading workstation to the centering device by the plate handling device for centering, and then the centered side plate is transferred to the first set of tooling. This step is repeated once so that two side plates are stacked on the first set of tooling. The first set of tooling separates and clamps the two side plates, creating a space between the two side plates to accommodate the partition and the central support shaft. The sheet metal handling device sequentially transfers two partition plates from the loading workstation to the first set of tooling between the two side plates, and places each partition plate upright at a preset position between the two side plates. Then, the spot welding device spots welds each transferred partition plate to one of the side plates to fix it in place, thereby completing the spot welding fixation of the two partition plates. The central support shaft is transferred from the loading workstation to the two side plates in the first set of tooling by the plate handling device, and the first set of tooling is used to position and clamp the two side plates. Then, the first set of tooling drives the two side plates to move closer together until the partition plate simultaneously abuts against the two side plates. Finally, the spot welding device is used to spot weld and fix all contact surfaces to obtain the first spot welded assembly. The bottom cover is transferred from the loading workstation to the second set of tooling by the sheet metal handling device and positioned and clamped. At the same time, the first spot welding component is hoisted and transferred to the bottom cover of the second set of tooling by the component hoisting equipment and positioned and clamped. The bottom cover and the first spot welding component are spot welded and fixed by the spot welding device to obtain the second spot welding component. The second spot welding component is transferred to the full welding positioning fixture for clamping and positioning using the component hoisting equipment, and then all welds are fully welded using the full welding device. The second spot welding assembly, which has been fully welded in one go, is transferred again to the second set of tooling for clamping and positioning by the component hoisting equipment. Then, the cover plate is transferred from the loading workstation to the second set of tooling by the plate handling device and positioned and clamped. Finally, the cover plate is spot welded to the second spot welding assembly by the spot welding device to obtain the third spot welding assembly. The third spot-welded assembly with the cover plate is transferred to the full-welding positioning fixture by the component hoisting equipment for clamping and positioning. Then, the full-welding device performs a second full-welding operation on all welds to obtain a finished workpiece with completed welding. The finished workpiece is moved and transferred to a preset position by the component hoisting equipment, and the processing is completed.

[0016] Compared with existing technologies, the boom mid-section production line and boom mid-section production method provided in this application have at least the following beneficial effects: The boom mid-section production line provided in this application can determine the working parameters of the loading workstation, the first welding workstation, the second welding workstation, and the component hoisting equipment according to the product formula of the boom mid-section. During processing, the plate material for welding the boom mid-section is placed through the loading workstation. The plate material is then transported to the centering device, the first pairing fixture, and the second pairing fixture arranged in sequence by the plate material handling device. The centering device is used for centering and positioning the plate material. The first pairing fixture is used for assembling and clamping the side plates, partitions, and center support shaft in the plate material. The second pairing fixture is used for assembling and clamping the bottom cover and cover plate in the plate material. The spot welding device can move between the first and second pairing fixtures and is used to perform spot welding operations. The component hoisting equipment is used to hoist and transfer the spot welding components between the first, second, and full welding positioning fixtures. The spot welding components are positioned by the full welding positioning fixture in the second welding workstation, and then the full welding device performs the full welding operation, finally obtaining the welded boom mid-section. Therefore, the boom mid-section production line provided in this application can be applied to the assembly and welding of boom mid-sections of excavators of different tonnages, realizing flexible production of boom mid-sections without the need to add other production lines, reducing the floor space and lowering costs.

[0017] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 A schematic diagram of the structure of a loading workstation in a boom mid-section production line provided in this application; Figure 2 A schematic diagram of the sheet metal handling device, spot welding device and centering device in the first welding workstation of the boom mid-section production line provided in this application; Figure 3 A three-dimensional structural schematic diagram of the first set of tooling in the first welding workstation provided in this application, with the tooling in the second posture; Figure 4 A first set of three-dimensional structural schematic diagrams of the tooling in a second posture from another perspective provided for this application; Figure 5 A three-dimensional structural schematic diagram of the second set of tooling in the first welding workstation provided in this application; Figure 6 for Figure 5 A magnified view of a portion of point A in the middle; Figure 7 for Figure 5 A magnified view of a portion of point B in the middle; Figure 8 A three-dimensional structural schematic diagram of a second welding workstation in a boom mid-section production line provided for this application; Figure 9 A three-dimensional structural schematic diagram of a component hoisting device in a boom mid-section production line provided in this application; Figure 10 This application provides a structural schematic diagram of a material unloading workstation in a boom mid-section production line.

[0019] Explanation of reference numerals in the attached figures 100. Feeding workstation; 110. Central support shaft tray; 120. Side partition tray; 130. Bottom cover tray; 200. First welding workstation; 210. Sheet metal handling device; 211. Moving base; 212. Six-axis robotic arm; 213. Electromagnetic gripper; 220. Spot welding device; 221. Spot welding torch; 222. Spot welding torch cleaning and wire reduction device; 223. Spot welding robotic arm; 230. Centering device; 231. Centering platform; 232. First centering fixture; 233. Second centering fixture; 240. First set of tooling; 241. Tilting support; 242. Tilting positioning fixture; 2420. Tilting frame; 2421. Clamping and positioning platform; 2421a. Clearance notch; 2422. Spacing adjustment assembly; 2422a. Electromagnetic suction base; 2423. Side plate width positioning pusher; 2424. Side plate width centering pusher; 2425. Side plate length positioning pusher; 242 6. Side plate length alignment pusher; 243. Tilting drive module; 244. First positioning cone pin assembly; 245. Second positioning cone pin assembly; 246. Tilting support module; 2460. Support drive assembly; 2461. Support arm; 250. Second set of tooling; 251. Positioning base; 252. Length positioning clamping module; 2520. Bottom cover length positioning pusher; 2521. Bottom cover length alignment pusher; 2522. Workpiece length positioning pusher; 2523. Workpiece length alignment pusher; 2524. Cover plate length positioning pusher; 2525. Cover plate length alignment pusher; 253. Width positioning clamping module; 2530. First width alignment positioning mechanism; 2531. Second width alignment positioning mechanism; 254. Clamping module; 260. Horizontal moving track.

[0020] 300. Second welding workstation; 310. Full welding device; 311. Full welding torch; 312. Full welding torch cleaning and wire reduction device; 320. Full welding positioning fixture; 321. Positioner; 322. Positioning fixture; 400. Component hoisting equipment; 410. Robotic gripper fixtures; 500. Unloading workstation; 510. Unloading rack; 520. Unloading buffer rack. Detailed Implementation

[0021] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0022] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0023] Please see Figures 1 to 10 This embodiment provides a boom mid-section production line, which can be used for the assembly and welding of the boom mid-section of excavators, and can adapt to the production needs of various product models at present, realizing flexible production.

[0024] The boom mid-section includes two aligned side plates, a central support shaft disposed between the two side plates, two partition plates, a bottom cover, and a cover plate. Thus, in this embodiment, the sheet metal required for assembling and producing the boom mid-section includes side plates, partition plates, a bottom cover, a cover plate, and a central support shaft.

[0025] The boom mid-section production line provided in this embodiment includes a loading workstation 100, a first welding workstation 200, a second welding workstation 300, and a component hoisting device 400. The loading workstation 100 is used to place the plates used for welding the boom mid-section assembly; the first welding workstation 200 is used to spot weld the assembled workpieces; the second welding workstation 300 can be used to perform full welding on the spot-welded components; finally, the component hoisting device 400 removes the fully welded workpieces to complete the processing operation.

[0026] Please see Figure 2 , Figure 3 and Figure 5 The first welding workstation 200 includes a sheet metal handling device 210, a spot welding device 220, and a centering device 230, a first set of tooling fixtures 240, and a second set of tooling fixtures 250 arranged sequentially along a linear direction. In this embodiment, the centering device 230, the first set of tooling fixtures 240, and the second set of tooling fixtures 250 are arranged sequentially along the X-axis direction.

[0027] The sheet metal handling device 210 can move along the X-axis on the base, thus allowing it to transfer sheet metal between the centering device 230, the first set of fitting fixtures 240, and the second set of fitting fixtures 250. The centering device 230 is used to center and position the side plates of the sheet metal to ensure accurate placement into the first set of fitting fixtures 240 during subsequent transfer, gripping, and placement. The first set of fitting fixtures 240 is used for the assembly and clamping positioning of the side plates, partitions, and central support shaft within the sheet metal. The second set of fitting fixtures 250 is used for the assembly and clamping positioning of the bottom cover and cover plate within the sheet metal. The spot welding device 220 can move between the first set of fitting fixtures 240 and the second set of fitting fixtures 250 and is used to perform spot welding operations.

[0028] The second welding workstation 300 is arranged to one side of the first welding workstation 200, and the second welding workstation 300 is used to perform full welding operations. Specifically, the second welding workstation 300 includes a full welding device 310 and a full welding positioning fixture 320. The full welding positioning fixture 320 is used to clamp and position the spot welding components completed in the second set of fixtures 250, and the full welding device 310 is arranged to one side of the full welding positioning fixture 320 to perform full welding operations.

[0029] The component hoisting equipment 400 is mounted on a base, and the lifting device of the component hoisting equipment 400 is positioned above the first welding workstation 200 and the second welding workstation 300. The component hoisting equipment 400 is used to hoist and transfer spot-welded components between the first set of tooling 240, the second set of tooling 250 and the full-weld positioning tooling 320.

[0030] To more clearly describe the technical solution of this application, the boom mid-section production line provided in this embodiment is described in detail below: The aforementioned loading workstation 100 is equipped with multiple storage trays, each used to hold at least one type of sheet material. In this embodiment, the multiple storage trays are a central support shaft tray 110, a side partition tray 120, and a bottom cover tray 130. The central support shaft tray 110, side partition tray 120, and bottom cover tray 130 can also be arranged along the X-axis direction. The central support shaft tray 110 is used to hold the central support shaft; the side partition tray 120 is used to hold side plates and partitions; and the bottom cover tray 130 is used to hold the bottom cover and cover plate. Furthermore, the central support shaft tray 110, side partition tray 120, and bottom cover tray 130 can be transported by an AGV (Automated Guided Vehicle).

[0031] In this embodiment, the boom mid-section production line also includes an interactive system and the AGV trolley. The interactive system includes an electrical control subsystem, a MES subsystem (production line logistics system), and a LES subsystem (manufacturing execution system). The material picking and detection module in the electrical control subsystem is used to monitor the remaining material status of the loading workstation 100 in real time and interact with the MES subsystem to exchange production information. Specifically, when the material tray area in the loading workstation 100 is empty, the electrical control subsystem feeds back information to the MES subsystem, which then issues a material calling command to the LES subsystem. The LES subsystem controls the AGV trolley to first transport the empty material rack away, and then transport the material tray with material to the preset position in the loading workstation 100, thereby realizing automated production.

[0032] The material handling and detection module can use material handling calculation to count the number of boards on each storage tray, or it can use a camera for visual inspection to determine whether there are boards on the storage tray.

[0033] Please see Figure 2 The aforementioned centering device 230 includes a centering platform 231, a first centering clamp 232 and a second centering clamp 233 disposed on the centering platform 231. The first centering clamp 232 is used to center the side plate in the length direction along the Y-axis direction, and the second centering clamp 233 is used to center the side edge in the width direction along the X-axis direction.

[0034] The first centering clamp 232 includes two first centering chucks arranged along the Y-axis. These two chucks are slidably disposed within a centering platform 231. The centering platform 231 has a first elongated guide hole along the Y-axis. The clamping portions of the two first centering chucks pass through the first elongated guide hole and are exposed on the upper surface of the centering platform 231, serving to center and position the side plates along their length. The first centering clamp 232 also includes a first motor and a first lead screw drive mechanism disposed inside the centering platform 231. The lead screw in the first lead screw drive mechanism has two threaded sections with opposite directions along its length. Each threaded section is fitted with a nut seat, and each nut seat is connected to a corresponding first centering chuck. The drive shaft of the first motor is connected to the lead screw in the first lead screw drive mechanism. Thus, by driving the lead screw in the first lead screw drive mechanism to rotate forward or backward by the first motor, the two aligned first centering chucks are driven to move closer or further apart.

[0035] The second centering clamp 233 includes a mechanical fixing block, a second centering chuck, a second motor, and a second lead screw transmission mechanism. The mechanical fixing block and the second centering chuck are aligned and arranged on the centering platform 231 along the X-axis. The mechanical fixing block can be fixedly installed on the upper surface of the centering platform 231 by screws or bolts. The centering platform 231 is also provided with a second elongated guide hole along the X-axis. The second centering chuck is slidably installed in the centering platform 231, and the clamping part of the second centering chuck passes through the second elongated guide hole and is exposed on the upper surface of the centering platform 231, for centering and positioning with the mechanical fixing block in the width direction of the opposite side plate. The second motor and the second lead screw transmission mechanism are both disposed in the centering platform 231. The drive shaft of the second motor is connected to the lead screw in the second lead screw transmission mechanism. The nut seat in the second lead screw transmission mechanism is sleeved on the lead screw and connected to the second centering chuck.

[0036] Please see Figure 2 and Figure 3 The first set of tooling 240 includes a flip support 241, a flip positioning fixture 242, and a flip drive module 243; the flip support 241 is disposed on a base. The flip positioning fixture 242 is rotatably disposed on the flip support 241, and the rotation axis of the flip positioning fixture 242 is consistent with its own length direction. One side of the flip positioning fixture is free from interference and obstruction, and can be used for loading and unloading; therefore, in this embodiment, it is positioned as the loading and unloading side.

[0037] In this embodiment, the flip positioning fixture 242 is used for clamping and positioning the side plate. The flip positioning fixture 242 includes a first posture and a second posture. When the flip positioning fixture 242 is in the first posture, the loading and unloading sides of the flip positioning fixture 242 face upwards, so as to facilitate the component hoisting equipment 400 to grasp the workpiece. When the flip positioning fixture 242 is in the second posture, the loading and unloading sides of the flip positioning fixture 242 are parallel to the horizontal direction, so as to facilitate the sheet material handling device 210 to transport the sheet material into the flip positioning fixture 242.

[0038] The flip drive module 243 is mounted on the flip support base 241 and drivenly connected to the flip positioning fixture 242. It is used to drive the flip positioning fixture 242 to rotate relative to the flip support base 241, so as to realize the rotation switching between the first posture and the second posture.

[0039] Specifically, the flipping positioning fixture 242 includes a flipping frame 2420, a clamping and positioning platform 2421, and a spacing adjustment assembly 2422. The two ends of the flipping frame 2420 along its own length direction are rotatably engaged with the flipping support base 241, thus realizing the rotatable engagement between the flipping frame 2420 and the flipping support base 241.

[0040] The clamping and positioning platform 2421 is mounted on the tilting frame 2420. The clamping and positioning platform 2421 is equipped with a side plate width positioning pusher 2423, a side plate width centering pusher 2424, a side plate length positioning pusher 2425, and a side plate length centering pusher 2426. The side plate width positioning pusher 2423 and the side plate width centering pusher 2424 are aligned along the Y-axis, while the side plate length positioning pusher 2425 and the side plate length centering pusher 2426 are aligned along the X-axis. Among them, the side plate width positioning pusher 2423, the side plate width centering pusher 2424, the side plate length positioning pusher 2425, and the side plate length centering pusher 2426 can all adopt a scheme similar to the second centering clamp 233 mentioned above. Under normal circumstances, after the product formula is downloaded and determined, when the side plate is transferred to the clamping and positioning platform 2421, the clamps of the side plate width positioning pusher 2423 and the side plate length positioning pusher 2425 move (or push the side plate to move) to the designated position (determined according to the product formula) and then remain stationary. In subsequent positioning, it is only necessary to control the relative movement of the clamps of the side plate width centering pusher 2424 and the side plate length centering pusher 2426 to achieve the clamping and positioning of the side plate.

[0041] The spacing adjustment assembly 2422 includes an adjustment drive mechanism and an electromagnetic chuck 2422a. The adjustment drive mechanism is mounted on the flipping frame 2420, and the electromagnetic chuck 2422a is aligned with the clamping and positioning platform 2421 and drivenly connected to the adjustment drive mechanism. The adjustment drive mechanism can drive the electromagnetic chuck 2422a to move away from or towards the clamping and positioning platform 2421. Specifically, the adjustment drive mechanism is used to drive the electromagnetic chuck 2422a to move relative to the clamping and positioning platform 2421 along a first direction and a second direction. The first direction is parallel to the length direction (X-axis direction) of the clamping and positioning platform 2421, and the second direction is parallel to the normal direction (Z-axis direction) of the clamping and positioning platform 2421.

[0042] Thus, when the flip drive module 243 switches to the second posture, the clamping surface of the clamping and positioning platform 2421 is horizontal. The sheet metal handling device 210 can sequentially transport the aligned side plates from the alignment device 230 to the clamping and positioning platform 2421, transporting them twice in succession, so that the two side plates are stacked on the clamping and positioning platform 2421. Then, the side plate width alignment pusher 2424 and the side plate length alignment pusher 2426 on the clamping and positioning platform 2421 perform side plate alignment to ensure that the two side plates are aligned. Then, the electromagnetic suction seat 2422a is driven to descend by the adjustment drive mechanism to attach to the side plate above and be energized to attract the side plate above. Then, the electromagnetic suction seat 2422a is driven to rise by the adjustment drive mechanism to separate the two side plates by a preset distance. This preset distance facilitates the placement of the partition and the central support shaft. Thus, after the two side plates are separated, the sheet metal handling device 210 sequentially moves the two partition plates and the central support shaft between the two side plates. Each time a partition plate is moved, it is placed vertically in a preset position. Then, the partition plate is spot-welded to the lower side plate by the spot welding device 220. Next, the central support shaft is moved and placed in the middle position of the two side plates. The electromagnetic suction seat 2422a is lowered by adjusting the drive mechanism, so that the two side plates clamp the partition plate. Then, all contact surfaces that need to be welded are spot-welded to obtain a spot-welded assembly. For clarity, this spot-welded assembly is defined as the first welding assembly in this embodiment. Finally, the flipping drive module 243 drives the flipping positioning fixture 242 to flip to the first posture so that the assembly hoisting equipment 400 can clamp and transfer the spot-welded first spot-welded assembly from the Z-axis direction.

[0043] Two spacing adjustment components 2422 are provided, and the two spacing adjustment components 2422 are distributed along the X-axis direction. Each spacing adjustment component 2422 includes an X-axis adjustment mechanism and a Z-axis adjustment mechanism. The X-axis adjustment mechanism is set on the tilting frame 2420, and the Z-axis adjustment mechanism is set on the X-axis adjustment mechanism. The X-axis adjustment mechanism can drive the Z-axis adjustment mechanism to move along the X-axis direction, and the Z-axis adjustment mechanism can output lifting and lowering motion along the Z-axis direction.

[0044] In this embodiment, each spacing adjustment assembly 2422 has at least one electromagnetic suction seat 2422a on its Z-axis adjustment mechanism. Thus, through the coordinated operation of the X-axis and Z-axis adjustment mechanisms in the two spacing adjustment assemblies 2422, the electromagnetic suction seats 2422a in the two spacing adjustment assemblies 2422 can be raised and lowered in the Z-axis direction and moved closer or further apart in the X-axis direction. It can be understood that the raising and lowering of the electromagnetic suction seats 2422a in the Z-axis direction adjusts the spacing of the side plates, and the movement of the two electromagnetic suction seats 2422a in the X-axis direction adjusts the spacing between the two electromagnetic suction seats 2422a, providing clamping space for the assembly lifting equipment 400 during lifting and avoiding interference.

[0045] Furthermore, an electromagnet can be installed on the clamping and positioning platform 2421 to attract and hold the lower side plate. When separating the upper side plate, the lower side plate can be prevented from moving, ensuring that the lower side plate is clamped more stably.

[0046] Please see Figure 3 In some embodiments, the first set of tooling 240 further includes a first positioning tapered pin assembly 244 and a second positioning tapered pin assembly 245, wherein the first positioning tapered pin assembly 244 is disposed on the flip support 241, and the second positioning tapered pin assembly 245 is disposed on the flip frame 2420. The clamping positioning platform 2421 has an avoidance notch 2421a in the middle. When the flip positioning fixture 242 switches to the second posture, the avoidance notch 2421a of the clamping positioning platform 2421 is aligned with the first positioning tapered pin assembly 244, and the second positioning tapered pin assembly 245 is opposite to the first positioning tapered pin assembly 244. If the second positioning tapered pin assembly 245 moves relative to the first positioning tapered pin assembly 244, for example, driving the tapered pins to move closer or further apart, the transferred middle support shaft is clamped and positioned (the side plate is provided with a positioning hole for installing the middle support shaft, and the tapered pin can pass through the positioning hole to clamp and position the middle support shaft).

[0047] Optionally, the taper pins in the first positioning taper pin assembly 244 and the second positioning taper pin assembly 245 can be driven by linear drive components such as cylinders, pneumatic cylinders, or electric cylinders.

[0048] The fixed end and the driving end of the flip drive module 243 are respectively hinged to the corresponding flip support 241 and flip frame 2420. Optionally, the flip drive module 243 can be a linear module such as a hydraulic cylinder, pneumatic cylinder, electric cylinder or motor lead screw.

[0049] Optionally, the X-axis adjustment mechanism and the Z-axis adjustment mechanism can be linear drive mechanisms such as hydraulic cylinders, pneumatic cylinders, electric cylinders, or motor lead screws.

[0050] Please see Figure 3 and Figure 4The first set of tooling 240 also includes a flip support module 246. When the flip positioning fixture 242 switches to the second posture, the flip support module 246 is used to support the bottom of the flip frame 2420 to ensure that the flip frame 2420 can be stably maintained in the second posture, so as to facilitate the subsequent assembly, positioning and spot welding of the sheet metal, and improve the positioning and welding accuracy.

[0051] Specifically, the flip support module 246 includes a support drive assembly 2460 and support arms 2461; the number of support arms 2461 can be set to multiple, and two support arms are shown in this embodiment. The support drive assembly 2460 is disposed on the flip support base 241; the support arms 2461 are drivenly connected to the support drive assembly 2460.

[0052] The support drive assembly 2460 can output rotational motion to drive the support arm to switch from a lying position to an upright support state. Optionally, the support drive assembly 2460 can be a rotary cylinder or a motor.

[0053] Understandably, in the initial state, the support arm 2461 is in a horizontal lying position to avoid interfering with the rotation of the flip positioning fixture 242; when the flip positioning fixture 242 switches to the second position, the support drive assembly 2460 can drive the support arm 2461 to switch to a vertical support state to support the flip frame 2420 of the flip positioning fixture 242.

[0054] Please see Figure 2 The aforementioned sheet metal handling device 210 includes a movable base 211 and a six-axis robotic arm 212 mounted on the movable base 211. The end of the six-axis robotic arm 212 is equipped with an electromagnetic gripper 213 that can be energized and magnetized. The movable base 211 can drive the six-axis robotic arm 212 to move in the X-axis direction. The six-axis robotic arm 212 uses its multiple degrees of freedom to drive the electromagnetic gripper 213 to grip and transfer the sheet metal.

[0055] Please see Figure 2 and Figure 5 The second set of tooling 250 includes a positioning base 251, a length positioning clamping module 252, a width positioning clamping module 253, a lifting module, and a clamping module 254. The positioning base 251 is mounted on a base and has a positioning area for positioning the bottom cover (the bottom cover is transferred from the loading workstation 100 by the sheet metal handling device 210). The length positioning clamping module 252, the width positioning clamping module 253, the lifting module, and the clamping module 254 are all mounted on the positioning base 251.

[0056] In this embodiment, the length positioning clamping module 252, the width positioning clamping module 253, the lifting module and the pressing module 254 can be used for positioning and clamping of the bottom cover, the first spot welding assembly and the cover plate.

[0057] Please refer to the following: Figure 6 and Figure 7 Specifically, the length positioning and clamping module 252 includes a bottom cover length positioning pusher 2520, a bottom cover length centering pusher 2521, a workpiece length positioning pusher 2522, a workpiece length centering pusher 2523, a cover plate length positioning pusher 2524, and a cover plate length centering pusher 2525. The width positioning and clamping module 253 includes a first width centering and positioning mechanism 2530 and a second width centering and positioning mechanism 2531. The lifting module is disposed in the positioning area of ​​the positioning base plate and aligned with the clamping end of the clamping module 254.

[0058] To more clearly describe the operation of the length positioning clamping module 252, the width positioning clamping module 253, and the clamping module 254, this embodiment provides a detailed explanation using the positioning, clamping, and spot welding steps of the bottom cover, the first spot welding assembly, and the cover plate, as follows: (i) Bottom cover clamping and positioning: The conveying device moves the bottom cover from the loading workstation 100 and places it on the lifting module of the positioning area of ​​the positioning base plate. Then, the bottom cover length positioning pusher 2520 moves in the length direction of the bottom cover to position the bottom cover to the set position. After positioning, the two centering clamps in the first width centering positioning mechanism 2530, which are aligned along the Y-axis, move to clamp and center the bottom cover in the width direction. After positioning, the bottom cover length centering pusher 2521 (aligned with the bottom cover length positioning pusher 2520 along the X-axis) pushes the bottom cover in the opposite direction of the movement of the bottom cover length centering pusher 2520. This action is repeated twice, so that the bottom cover is aligned in both length and width directions. The first width centering positioning mechanism 2530, the bottom cover length positioning pusher 2520, and the bottom cover length centering pusher 2521 return to their original positions. (II) Positioning of the First Spot Welding Component: The first spot welding component is hoisted onto the aligned bottom cover using the component hoisting equipment 400. Subsequently, the workpiece length positioning pusher 2522 moves, pushing the first spot welding component to a set position along the length of the bottom cover. The first width alignment positioning mechanism 2530 then clamps and positions the first spot welding component. Once positioning is complete, the workpiece length alignment pusher 2523 (aligned with the workpiece length positioning pusher 2522 along the X-axis) pushes twice in the opposite direction of the workpiece length positioning pusher 2522, thus completing the centering and positioning of the first spot welding component. The second width alignment positioning mechanism 2531 (with two clamping fixtures aligned along the Y-axis) then clamps the first spot welding component. The lifting module on the positioning base plate performs a lifting action, lifting the bottom cover to fit against the lower side of the first spot welding component. The spot welding device 220 is then activated to spot weld and fix the contact surface between the bottom cover and the first spot welding component, thereby obtaining the second spot welding component.

[0059] It should be noted that since the second spot welding assembly does not have a cover plate, it is convenient to perform full welding on the internal weld of the second spot welding assembly. In this way, the second spot welding assembly can be transferred to the full welding positioning fixture 320 by the assembly hoisting equipment 400 for full welding. After the full welding is completed, the second spot welding assembly is transferred to the second set of fixtures 250 for positioning and clamping again.

[0060] (III) Cover Plate Clamping and Positioning: The cover plate is transferred from the loading workstation 100 by the plate handling device 210, so that the cover plate covers the second spot welding assembly. At this time, the first width centering and positioning mechanism 2530 and the second width centering and positioning mechanism 2531 both clamp the second spot welding assembly, realizing the secondary clamping of the second spot welding assembly. Then, the cover plate length positioning pusher 2524 performs a positioning movement to push the cover plate to the set position in the X-axis direction. The positioning is completed. The second width centering and positioning mechanism 2531 moves to position the cover plate in the Y-axis direction. Then, the cover plate length centering pusher 2525 (aligned with the cover plate length positioning pusher 2524 in the X-axis direction) moves in the opposite direction of the movement of the cover plate length positioning pusher 2524. The movement is repeated twice, thus the centering and positioning of the cover plate is completed. The pressing end of the clamping module presses the cover plate tightly against the upper side of the second spot welding assembly, and the cover plate contacts the side plates on both sides of the second spot welding assembly. The spot welding device 220 is activated to spot weld and fix the contact surface between the cover plate and the second spot welding assembly, thereby obtaining the third spot welding assembly. Finally, the third spot welding assembly is transferred to the full welding positioning fixture 320 by the assembly hoisting equipment 400 for full welding, thereby obtaining the processed boom middle section workpiece.

[0061] Optionally, the bottom cover length positioning pusher 2520, the bottom cover length centering pusher 2521, the workpiece length positioning pusher 2522, the workpiece length centering pusher 2523, the cover plate length positioning pusher 2524, the cover plate length centering pusher 2525, the first width centering positioning mechanism 2530, the second width centering positioning mechanism 2531, the lifting module, and the clamping module 254 can all be driven by hydraulic cylinders to move the push blocks, thereby achieving the positioning and clamping action. Of course, in some embodiments, the hydraulic cylinder driving the push block to move can also be replaced by a pneumatic cylinder, an electric cylinder, etc. It should be understood that the above are only illustrative examples and are not intended to limit the scope of protection of this application.

[0062] Please refer to the following: Figure 8 and Figure 9 The aforementioned full-welding positioning fixture 320 includes a positioner 321 and a positioning jig 322, which are arranged on one side of the full-welding device 310. It should be noted that the positioner 321 generally consists of a worktable rotation mechanism and a tilting mechanism. Through the lifting, tilting, and rotation of the worktable, the workpiece fixed on the worktable reaches the required welding and assembly angle. The worktable rotation is frequency-controlled and steplessly adjustable, allowing for satisfactory welding speeds.

[0063] The positioning fixture 322 is mounted on the positioner 321 and is used to clamp the spot welding assembly (second spot welding assembly or third spot welding assembly) completed in the second set of tooling 250 in the length, width, and vertical directions. The positioning fixture 322 can use a motor-driven lead screw assembly to achieve clamping in the length and width directions. Vertical clamping can be achieved using a spinning cylinder.

[0064] The full welding device 310 uses a full welding robot, which has a full welding gun 311 and a full welding gun cleaning and wire reduction device 312.

[0065] Please see Figure 9 The aforementioned component lifting equipment 400 adopts a gantry crane or overhead crane structure, and has degrees of freedom of movement in the X-axis, Y-axis, and Z-axis directions. The lifting device 400 is a hydraulically driven robotic gripper 410.

[0066] Please refer to the following: Figure 10 In this embodiment, the boom mid-section production line also includes a material unloading workstation 500, which includes finished product unloading racks 510 and multiple unloading buffer racks 520 arranged sequentially in a straight line. The unloading buffer racks 520 are used to buffer spot welding components transferred from the second set of tooling 250 by the component hoisting equipment 400 or finished workpieces that have completed full welding transferred from the second welding workstation 300; the finished product unloading racks 510 are used to store finished workpieces that have completed full welding transferred from the second welding workstation 300 by the component hoisting equipment 400.

[0067] In this way, the workpieces in the process are buffered by the unloading buffer rack 520 and the finished product unloading rack 510, ensuring the continuity of the production line in the middle section of the boom, ensuring smooth processing, and improving processing efficiency.

[0068] Understandably, the interactive system can also monitor the status of buffered materials on the unloading workstation 500 in real time. Specifically, when the unloading buffer rack 520 is full, the electrical control subsystem uploads the finished product waiting-to-be-picked signal to the MES subsystem. The MES subsystem then issues a picking instruction to the LES subsystem, which assigns the task to the AGV (Automated Guided Vehicle) cart. The AGV cart then transports the finished product away, completing a full production cycle.

[0069] In some embodiments, the first welding workstation 200 further includes a horizontal moving track 260 laid along the direction (i.e., the X-axis direction) in which the centering device 230, the first set of tooling 240, and the second set of tooling 250 are arranged sequentially. Both the sheet metal handling device 210 and the spot welding device 220 are movably mounted on the horizontal moving track 260. This allows the sheet metal handling device 210 and the spot welding device 220 to share the track, saving costs and resulting in a more compact structural layout.

[0070] The spot welding device 220 includes a spot welding gun 221, a spot welding gun cleaning and wire reduction device 222, and a spot welding robotic arm 223. The spot welding robotic arm 223 is mounted on a horizontal moving track 260 laid in the X direction. The spot welding gun 221 is mounted on the spot welding robotic arm 223.

[0071] Furthermore, this embodiment also provides a method for producing the middle section of the boom, applied to the boom middle section production line provided above. The boom middle section production method includes the following steps: S100: Determine the product formula for the boom mid-section to be produced, and prepare the sheet metal and set the working parameters of the boom mid-section production line according to the product formula; among them, the working parameters, such as the positioning position and centering position of the sheet metal and workpiece, are different for different models of boom mid-sections and need to be automatically configured through the operating system of the boom mid-section production line before production.

[0072] S101: Start the boom mid-section production line and begin production.

[0073] S102: The side plate is transferred from the loading workstation 100 to the centering device 230 for centering by the plate handling device 210, and then the centered side plate is transferred to the first set of tooling 240. This step is repeated once so that two side plates are stacked on the first set of tooling 240.

[0074] S103: The first set of tooling 240 separates and positions the two side plates, so that a space is formed between the two side plates to accommodate the partition and the central support shaft.

[0075] S104: The two partition plates are sequentially transferred from the loading workstation 100 to the first set of tooling 240 via the plate handling device 210, and each partition plate is placed upright at a preset position between the two side plates. Then, the spot welding device 220 is used to spot weld the partition plate transferred each time to one of the side plates to complete the spot welding fixation of the two partition plates.

[0076] S105: The central support shaft is transferred from the loading workstation 100 to the two side plates in the first set of tooling 240 by the plate handling device 210, and positioned and clamped by the first set of tooling 240. Then, the two side plates are driven to move closer by the first set of tooling 240 until the partition plate abuts against the two side plates at the same time. Finally, all contact surfaces are spot welded and fixed by the spot welding device 220 to obtain the first spot welded assembly.

[0077] S106: The bottom cover is transferred from the loading workstation 100 to the second set of tooling 250 by the sheet metal handling device 210 and positioned and clamped. At the same time, the first spot welding component is hoisted and transferred to the bottom cover of the second set of tooling 250 by the component hoisting equipment 400 and positioned and clamped. The bottom cover and the first spot welding component are spot welded and fixed by the spot welding device 220 to obtain the second spot welding component.

[0078] S107: The second spot welding component is transferred to the full welding positioning fixture 320 for clamping and positioning by the component hoisting equipment 400, and then the full welding device 310 performs a full welding operation on all welds.

[0079] S108: The second spot-welded assembly, which has been fully welded once, is transferred again to the second set of tooling 250 for clamping and positioning by the component hoisting equipment 400. Then, the cover plate is transferred from the loading workstation 100 to the second set of tooling 250 by the plate handling device 210 and positioned and clamped. Finally, the cover plate is spot-welded to the second spot-welded assembly by the spot welding device 220 to obtain the third spot-welded assembly.

[0080] S109: The third spot-welded assembly with the cover plate is transferred to the full-welding positioning fixture 320 for clamping and positioning by the component hoisting equipment 400, and then the full-welding device 310 performs a second full-welding operation on all welds to obtain the finished workpiece with completed welding.

[0081] S110: The finished workpiece is moved away from and transferred to the preset position (unloading workstation 500) by the component hoisting equipment 400, and the processing is completed.

[0082] Compared to existing technologies, the boom mid-section production line provided in this embodiment has the following advantages: (1) Flexible clamping is achieved by the first set of tooling 240 and the second set of tooling 250. Then, through the coordinated cooperation of the plate handling device 210, spot welding device 220, full welding device 310, full welding positioning tooling 320 and component hoisting equipment 400, this embodiment solves the problem of the applicability of boom mid-section product production, and can be applied to flexible production of various machine models.

[0083] (2) By coordinating the entire production line through the interactive system and AGV carts, the production is fully automated and intelligent, reducing production time and greatly improving production efficiency.

[0084] (3) An external supply method of automatic material calling is adopted. That is, the material demand is uploaded through the electrical control subsystem. The MES subsystem receives the information feedback and issues an instruction to the LES subsystem to distribute the product demand. The LES subsystem assigns the task to the AGV car to deliver the material to the loading workstation 100. At the same time, the unloading method is also through feedback to the MES subsystem. The LES subsystem issues an instruction to the AGV car, and the AGV car transports the finished workpiece to the storage area, thus forming a complete closed loop of the production system.

[0085] It should be noted that, in this application, unless otherwise stated, the terms “center,” “length,” “width,” “thickness,” “upper,” “lower,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” etc., used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0086] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0087] In this application, unless otherwise expressly specified and limited, the terms "set at," "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0088] In the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0089] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A boom midsection production line characterized by, The boom mid-section production line includes: The loading workstation (100) is used to place the plates used for welding the middle section of the boom; The first welding workstation (200) includes a sheet metal handling device (210), a spot welding device (220), and a centering device (230), a first set of fitting fixtures (240), and a second set of fitting fixtures (250) arranged sequentially along a linear direction. The sheet metal handling device (210) is used to transfer sheet metal between the centering device (230), the first set of fitting fixtures (240), and the second set of fitting fixtures (250). The centering device (230) is used for centering and positioning the sheet metal. The first set of fitting fixtures (240) is used for assembling and clamping the side plates, partitions, and central support shafts in the sheet metal. The second set of fitting fixtures (250) is used for assembling and clamping the bottom cover and cover plate in the sheet metal. The spot welding device (220) can move between the first set of fitting fixtures (240) and the second set of fitting fixtures (250) and is used to perform spot welding operations. The second welding workstation (300) includes a full welding device (310) and a full welding positioning fixture (320). The full welding positioning fixture (320) is used to clamp and position the spot welding components completed in the second set of fixtures (250). The full welding device (310) is arranged on one side of the full welding positioning fixture (320) to perform full welding operations. A component hoisting device (400) is used to hoist and transfer the spot-welded component between the first set of pairing fixtures (240), the second set of pairing fixtures (250) and the full-weld positioning fixture (320); The first set of tooling (240) includes: Flip support base (241); A flipping positioning fixture (242) is rotatably mounted on the flipping support (241), and the rotation axis of the flipping positioning fixture (242) is consistent with its own length direction; wherein, the flipping positioning fixture (242) includes a first posture and a second posture. When the flipping positioning fixture (242) is in the first posture, the loading and unloading sides of the flipping positioning fixture (242) face upwards; when the flipping positioning fixture (242) is in the second posture, the orientation of the loading and unloading sides of the flipping positioning fixture (242) is parallel to the horizontal direction; and A flip drive module (243) is disposed on the flip support base (241) and drivenly connected to the flip positioning fixture (242), and is used to drive the flip positioning fixture (242) to rotate relative to the flip support base (241) so as to realize the rotation switching between the first posture and the second posture; The second set of tooling (250) includes a positioning base (251), a length positioning clamping module (252), a width positioning clamping module (253), a lifting module, and a clamping module (254). The positioning base (251) is provided with a positioning area for positioning the bottom cover. The length positioning clamping module (252), the width positioning clamping module (253), the lifting module and the pressing module (254) are all disposed on the positioning base (251). The length positioning clamping module (252), the width positioning clamping module (253), the lifting module and the pressing module (254) are used together for positioning and clamping of the bottom cover, the spot welding assembly and the cover plate.

2. The boom intermediate production line according to claim 1, characterized in that The flipping positioning fixture (242) includes: The flipping frame (2420) is rotatably mounted on the flipping support base (241); A clamping and positioning platform (2421) is mounted on the flipping frame (2420). The clamping and positioning platform (2421) is equipped with a side plate width positioning pusher (2423), a side plate width centering pusher (2424), a side plate length positioning pusher (2425), and a side plate length centering pusher (2426). The spacing adjustment assembly (2422) includes an adjustment drive mechanism and an electromagnetic suction base (2422a). The adjustment drive mechanism is disposed on the flipping frame (2420), and the electromagnetic suction base (2422a) is aligned with the clamping and positioning platform (2421) and drivenly connected to the adjustment drive mechanism. The adjustment drive mechanism is used to drive the electromagnetic suction base (2422a) to move relative to the clamping and positioning platform (2421) along a first direction and a second direction. The first direction is parallel to the length direction of the clamping and positioning platform (2421), and the second direction is parallel to the normal direction of the clamping and positioning platform (2421).

3. The boom intermediate production line according to claim 1 or 2, characterized in that The first set of tooling (240) further includes a flip support module (246), the flip support module (246) comprising: A support drive assembly (2460) is disposed on the flip support base (241); and The support arm (2461) is driven to be connected to the support drive assembly (2460); In the initial state, the support arm (2461) is in a horizontal lying position. When the flipping positioning fixture (242) is in the second position, the support drive component (2460) can drive the support arm (2461) to switch to a vertical support state to support the flipping positioning fixture (242).

4. The boom intermediate production line according to claim 1, characterized in that The full-weld positioning fixture (320) includes: A positioner (321) is arranged on one side of the full welding device (310); A displacement positioning fixture (322) is disposed on the positioner (321) and is used to clamp the spot welding assembly completed in the second set of tooling (250) in the length direction, width direction and vertical direction.

5. The boom intermediate production line of claim 1, wherein The boom mid-section production line also includes a material unloading workstation (500), which includes finished product unloading racks (510) and multiple material unloading buffer racks (520) arranged sequentially along a straight line. The unloading buffer rack (520) is used to buffer the spot welding assembly transferred from the second set of tooling (250) by the component hoisting equipment (400) or the finished workpiece that has been fully welded and transferred from the second welding workstation (300); The finished product unloading rack (510) is used to store the fully welded finished workpieces transferred from the second welding workstation (300) by the component hoisting equipment (400).

6. The boom intermediate production line of claim 1, wherein The first welding workstation (200) also includes a horizontal moving track (260) laid along the direction in which the centering device (230), the first set of tooling (240) and the second set of tooling (250) are arranged in sequence. Both the sheet metal handling device (210) and the spot welding device (220) are movably mounted on the horizontal moving track (260).

7. The boom intermediate production line of claim 1, wherein The boom mid-section production line also includes an interactive system and AGV trolleys; The interactive system includes an electrical control subsystem, a MES subsystem, and a LES subsystem. The material detection module in the electrical control subsystem is used to monitor the remaining material status of the board on the loading workstation (100) in real time and to interact with the MES subsystem to exchange production information. When the material tray area in the loading workstation (100) is empty, the electrical control subsystem feeds back information to the MES subsystem, and the MES subsystem issues a material calling command to the LES subsystem. The LES subsystem controls the AGV trolley to first transport the empty material rack away, and then transport the material tray with material to the preset position of the loading workstation (100).

8. A method of producing a boom intermediate section, characterized by, Applied to the boom mid-section production line according to any one of claims 1-7, the boom mid-section production method includes: Determine the product formula for the boom mid-section to be produced, and prepare the sheet metal and set the working parameters of the boom mid-section production line according to the product formula; Start the boom mid-section production line to begin production; The side plate is transferred from the loading station (100) to the centering device (230) by the plate handling device (210) for centering, and then the centered side plate is transferred to the first set of tooling (240). This step is repeated once so that two side plates are stacked on the first set of tooling (240). The first set of tooling (240) separates and positions the two side plates, so that a space for accommodating the partition and the central support shaft is formed between the two side plates; The two partition plates are sequentially transferred from the loading workstation (100) to the first set of tooling (240) between the two side plates by the plate handling device (210), and each partition plate is placed upright at a preset position between the two side plates. Then, the spot welding device (220) is used to spot weld the partition plate transferred each time to one of the side plates to complete the spot welding fixation of the two partition plates. The central support shaft is transferred from the loading workstation (100) to the two side plates in the first set of tooling (240) by the plate handling device (210), and is positioned and clamped by the first set of tooling (240). Then, the two side plates are driven to move closer by the first set of tooling (240) until the partition plate abuts against the two side plates at the same time. Then, all contact surfaces are spot welded and fixed by the spot welding device (220) to obtain the first spot welded assembly. The bottom cover is transferred from the loading workstation (100) to the second set of tooling (250) by the sheet metal handling device (210) and positioned and clamped. At the same time, the first spot welding component is hoisted and transferred to the bottom cover of the second set of tooling (250) by the component hoisting equipment (400) and positioned and clamped. The bottom cover and the first spot welding component are spot welded and fixed by the spot welding device (220) to obtain the second spot welding component. The second spot welding component is transferred to the full welding positioning fixture (320) by the component hoisting equipment (400) for clamping and positioning, and then the full welding device (310) performs a full welding operation on all welds. The second spot-welded assembly, which has been fully welded in one go, is transferred again to the second set of tooling (250) by the component hoisting equipment (400) for clamping and positioning. Then, the cover plate is transferred from the loading workstation (100) to the second set of tooling (250) by the plate handling device (210) and positioned and clamped. Then, the cover plate is spot-welded to the second spot-welded assembly by the spot welding device (220) to obtain the third spot-welded assembly. The third spot-welded assembly with the cover plate spot-welded is transferred to the full-welding positioning fixture (320) by the component hoisting equipment (400) for clamping and positioning. Then, the full-welding device (310) performs a second full-welding operation on all welds to obtain a finished workpiece with completed welding. The finished workpiece is moved away from and transferred to a preset position by the component hoisting equipment (400), and the processing is completed.

Images