Welding center and method for platform machining

Abstract

The invention relates to a welding center and method for platform machining, and belongs to the technical field of welding equipment. The device comprises a rack, a gantry frame is slidably mounted on the upper surface of the rack, an air cylinder is slidably arranged at the bottom of a cross beam of the gantry frame, a mounting plate is fixed to the telescopic end of the air cylinder, and a welding head is mounted on the lower surface of the mounting plate; and fixing cylinders are further included, the two fixing cylinders are fixed to the left side and the right side of the lower surface of the mounting plate, and moving plates are slidably connected to the opposite faces of the two supporting vertical plates. According to the device, a single honeycomb platform is automatically clamped through a motor and a wedge block, a guide plate is matched for abutting, an elastic floating roller is matched for pressing, positioning is stable, a workpiece is not damaged, full-area cleaning and negative-pressure synchronous impurity removal are adopted before welding, welding defects are effectively avoided, initial pre-stretching is conducted in the welding process, and the welding efficiency is improved. And then the progressive secondary stretching is realized along with the linkage of the welding machine head, the stress is dynamically eliminated, the deformation is inhibited, and the flatness and the welding precision are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a welding center and method for platform processing. Background Technology

[0002] Monolithic honeycomb platforms, a sandwich structure formed by a hexagonal honeycomb core made of ultra-thin metal foil and upper and lower panels, possess excellent properties such as high specific strength, lightweight, heat insulation, sound insulation, and impact resistance. They are widely used in high-end equipment fields such as satellite platforms, engine compartments, high-speed rail bodies, and new energy battery trays. The core processing challenges lie in the thin walls, numerous cavities, poor rigidity, and extremely low heat capacity of the honeycomb core. Furthermore, the high reflectivity of commonly used materials such as aluminum alloys and titanium alloys makes them prone to problems during welding, including unsupported molten pools, burn-through, collapse, and thermal deformation, placing extremely high demands on welding precision and stability. Currently, the welding of monolithic honeycomb platforms mainly relies on traditional welding processes and general-purpose welding equipment, which have the following drawbacks in practical use: The honeycomb core of the monocellular honeycomb platform is made of ultra-thin metal foil, which has extremely poor rigidity. During the welding process, uneven heat input generates a large amount of thermal stress. Existing equipment cannot perform precise pre-stretching treatment on the monocellular honeycomb platform before welding, and cannot offset the thermal stress that will be generated during welding in advance. At the same time, it does not have the function of dynamic adjustment to offset stress in real time as welding progresses. During the welding process, thermal stress will continuously accumulate at the connection between the honeycomb core and the panel and around the weld. This will not only further aggravate the warping and deformation of the honeycomb platform, resulting in serious deviations in flatness and perpendicularity, but also cause micro-cracks in the ultra-thin honeycomb core due to stress concentration. In severe cases, the honeycomb core may crack and the panel may peel off from the honeycomb core, directly affecting the welding accuracy and structural strength of the workpiece. This results in workpieces failing to meet the requirements of high-end equipment, or even being scrapped outright. Furthermore, the welding surfaces of the single-cell honeycomb platform (the connection surface between the panel and the honeycomb core) are prone to leaving impurities such as oil, scale, and dust during processing and handling. Scale prevents the molten pool from fully fusing with the base material during welding, oil evaporates and generates gas during high-temperature welding, and dust gets trapped in the molten pool. These impurities work together to cause frequent fatal welding defects such as porosity, lack of fusion, and slag inclusions during welding. This not only reduces the bonding strength of the weld, making it prone to detachment and breakage, but also seriously affects the stability of welding quality. This leads to significant differences in welding quality among single-cell honeycomb platforms of the same batch and specifications, further increasing rework rates and production costs.

[0003] To address the aforementioned issues, innovative designs are urgently needed based on existing approaches. Summary of the Invention

[0004] The purpose of this invention is to provide a welding center and method for platform processing to solve the problems mentioned in the background. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding center and method for platform processing, comprising a frame, a gantry frame slidably mounted on the upper surface of the frame, and a cylinder slidably mounted on the bottom of the crossbeam of the gantry frame, the telescopic end of the cylinder being fixed to a mounting plate, and a welding head being mounted on the lower surface of the mounting plate; further comprising fixed cylinders, two of which are fixed to the left and right sides of the lower surface of the mounting plate, and movable rods slidably connected through the bottom of the inner walls of the two fixed cylinders, a buffer spring being installed between the top end of the movable rod and the inner wall of the fixed cylinder, and the bottom end of the movable rod... A bracket is movably connected via a ball joint. A pressure roller is rotatably connected to the inner side of the bracket via a shaft. Pre-cleaning components are provided on the side of the bracket and the upper surface of the gantry frame. A motor is fixedly installed on the right side of the frame via bolts. A bidirectional threaded rod is fixed to the output end of the motor. Slider blocks are threadedly connected to the outer sides of both ends of the bidirectional threaded rod. A bearing plate is provided on the top of each of the two sliders. Clamping plates are slidably connected to the opposite faces of the vertical ends of the two bearing plates. Dynamic welding stress relief components are provided on the upper surface of the frame, the side of the bearing plate, and the inner side of the gantry frame.

[0006] Preferably, the right end of the bidirectional threaded rod extends into the interior of the frame, and the bidirectional threaded rod and the frame are connected by a bearing. Furthermore, the threads on the outer sides of both ends of the bidirectional threaded rod have opposite directions, and both sliders are slidably connected to the frame.

[0007] Preferably, the support plate is slidably connected to the upper surface of the slider, and the support plate is arranged in an "L" shape. A first spring is installed between the bottom of one side of the clamping plate and the inner wall of the support plate.

[0008] Preferably, the dynamic welding stress relief assembly includes support plates, two support plates are fixedly connected to the left and right sides of the upper surface of the frame, and movable plates are slidably connected to the opposite surfaces of the two support plates. Wedge blocks are fixedly connected at equal intervals to the lower surface of the movable plates and the upper surface of the clamping plates. Rollers are rotatably connected to the upper surfaces of the opposite vertical ends of the two bearing plates. Lifting plates are slidably connected to the sides of the vertical beams of the gantry frame, and guide plates are fixedly connected to the bottom of the two lifting plates. Push plates are bolted to the opposite surfaces of the two guide plates. The upper surfaces of the two lifting plates and the mounting plates are fixedly connected by telescopic linkage plates. A fitting plate is rotatably connected to the bottom of the guide plates.

[0009] Preferably, the side of the movable plate away from the supporting upright plate penetrates the interior of the vertical end of the bearing plate, and the inclined surfaces of the wedge blocks on the movable plate and the clamping plate are in contact with each other. A second spring is installed between the bottom of one side of the movable plate and the inner wall of the supporting upright plate, and the contact plate is inclined.

[0010] Preferably, racks are slidably connected above the opposite surfaces of the two supporting uprights, guide seats are slidably connected to the upper surface of the bonding plate, a lead screw is connected to the internal bearing of the guide plate, a drive gear is fixedly sleeved on the outer side of the upper end of the lead screw, and a threaded cylinder is threadedly connected to the outer side of the lower end of the lead screw.

[0011] Preferably, the outer side of the drive gear extends through the interior of the guide plate, the drive gear is positioned corresponding to the rack, and the bottom of the threaded cylinder is hinged to the top of the guide seat.

[0012] Preferably, the pre-cleaning assembly includes a housing, two housings are fixedly connected to the opposite sides of two supports, and a cleaning brush is rotatably connected inside each housing via a rotating shaft. The outer side of the rotating shaft is connected to the shaft end of the support via a bevel gear set. A negative pressure suction nozzle is bolted to the front of each housing. A collection box and a negative pressure fan are respectively installed on the upper surface of the gantry frame beam, and both ends of the negative pressure fan are connected to the two negative pressure suction nozzles and the collection box via connecting hoses.

[0013] Preferably, the cleaning brush is fixedly connected to the rotating shaft by bolts, and the cleaning brush and the pressure roller are arranged on the same horizontal plane.

[0014] Preferably, a method of using a welding center for platform processing includes the following steps: S1: Place the honeycomb platform on the support plate. The bidirectional threaded rod drives the support plate to move in opposite directions. The wedge block drives the clamping plate to press the workpiece. In conjunction with the guide plate, double limiting is achieved. At the same time, the buffer spring makes the rollers flexibly fit the workpiece to avoid damage and improve positioning stability. S2: Before welding, the cylinder drives the mounting plate to move down, so that the clamping roller and cleaning brush are in contact with the workpiece. The equipment moves to clean the entire area. The roller rotates and drives the cleaning brush to rotate at high speed through the bevel gear set. It works with the negative pressure suction nozzle to collect impurities and avoid welding defects. S3: The cylinder drives the mounting plate to move down, which in turn moves the guide plate synchronously. Through the pressing and cooperation between the bonding plate and the roller, the roller is driven to move away from each other, which drives the bearing plate to pre-stretch the honeycomb platform, ensuring that the workpiece is flat and taut, avoiding loosening and warping, and laying the foundation for high-quality welding. S4: When the welding head moves during welding, the drive gear meshes with the rack, which drives the lead screw to rotate, drives the threaded cylinder to move downward, and pushes the bonding block to act on the roller, realizing secondary progressive stretching, offsetting welding stress, suppressing thermal deformation, and improving the flatness of the platform and welding accuracy.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a cylinder to drive the mounting plate and guide plate to move down synchronously. The pressing roller of the bonding plate drives the two sets of bearing plates to move in opposite directions, which can quickly complete the initial pre-stretching of the single honeycomb platform, so that the workpiece is kept flat and taut before welding. This avoids problems such as loosening, warping, and uneven splicing gaps in the workpiece from the source, effectively improving the accuracy of the welding reference and laying a solid foundation for subsequent stable welding operations.

[0016] 2. In the welding process, the present invention utilizes the movement of the welding head to achieve gear and rack meshing transmission, which can drive the lead screw, threaded cylinder and bonding block in linkage without additional power, and drive the roller to continuously move in opposite directions, realizing the secondary progressive stretching that gradually increases with the welding process. This can dynamically offset the internal stress generated by the high temperature of welding, effectively suppress thermal deformation, wrinkling and warping, and greatly improve the overall flatness, dimensional accuracy and structural stability of the single honeycomb platform.

[0017] 3. Before welding, the present invention can achieve full coverage cleaning of the workpiece surface by moving the gantry frame and the mounting plate in multiple directions. The roller and the cleaning brush are driven to rotate at high speed by the roller and the bevel gear set to actively remove dust and debris. The negative pressure suction nozzle, the fan and the collection box are used to achieve synchronous adsorption and collection, which can prevent impurities from flying and secondary adhesion, significantly reduce welding defects such as porosity, slag inclusion and incomplete welding, and effectively improve the weld formation quality and appearance accuracy.

[0018] 4. This invention uses a motor-driven bidirectional threaded rod to move the bearing plates in opposite directions, and in conjunction with the wedge block self-locking structure, it achieves automatic clamping and positioning of the honeycomb platform. At the same time, the guide plate and push plate force the upper and lower wedge blocks to fit tightly together, preventing clamping failure during the stretching process. The elastic floating roller achieves double clamping and limiting at the top and bottom. The floating roller can adapt to the flatness and thickness deviation of the workpiece surface, ensuring stable and reliable clamping and stretching processes, while avoiding indentations and deformation caused by rigid clamping, significantly improving the adaptability of the equipment and the processing accuracy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the guide plate and the gantry frame of the present invention; Figure 3 This is a schematic diagram of the downward movement structure of the mounting plate, welding head, and cleaning brush of the present invention; Figure 4 This is a schematic diagram of the slider and bidirectional threaded connection structure of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the supporting upright plate and the movable plate of the present invention; Figure 6 This is a side sectional view of the guide plate and housing structure of the present invention; Figure 7 This is a schematic diagram of the connection structure between the drive gear and the lead screw of the present invention; Figure 8 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the meshing structure of the drive gear and rack of the present invention.

[0020] In the diagram: 1. Frame; 2. Gantry frame; 3. Cylinder; 4. Welding head; 5. Mounting plate; 6. Fixed cylinder; 7. Movable rod; 8. Pressure roller; 9. Buffer spring; 10. Bracket; 1101. Housing; 1102. Cleaning brush; 1103. Negative pressure nozzle; 1104. Rotating shaft; 1105. Bevel gear set; 1106. Connecting hose; 1107. Collection box; 1108. Negative pressure fan; 12. 13. Carrier plate; 14. Slider; 1501. Bidirectional threaded rod; 1502. Support plate; 1503. Roller; 1504. Rack; 1505. Lifting plate; 1506. Telescopic linkage plate; 1507. Guide plate; 1508. Adhesive plate; 1509. Wedge block; 1510. Moving plate; 1511. Drive gear; 1512. Threaded cylinder; 1513. Lead screw; 16. Clamping plate. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0022] Please see Figures 1-9This invention provides a technical solution: a welding center and method for platform processing, comprising a frame 1, a gantry frame 2 slidably mounted on the upper surface of the frame 1, and a cylinder 3 slidably mounted on the bottom of the crossbeam of the gantry frame 2. A mounting plate 5 is fixed to the telescopic end of the cylinder 3, and a welding head 4 is mounted on the lower surface of the mounting plate 5. It also includes fixed cylinders 6, two of which are fixed to the left and right sides of the lower surface of the mounting plate 5. Movable rods 7 are slidably connected through the bottom of the inner walls of the two fixed cylinders 6. A buffer spring 9 is installed between the top of the movable rod 7 and the inner wall of the fixed cylinder 6, and a bracket 10 is movably connected to the bottom of the movable rod 7 via a universal ball joint. A pressure roller 8 is rotatably connected to the inner side of the bracket 10 via a shaft. The right side of the frame 1 is connected by bolts. A motor is fixedly installed, and a bidirectional threaded rod 14 is fixed to the output end of the motor. Slider 13s are threadedly connected to the outer sides of both ends of the bidirectional threaded rod 14, and a bearing plate 12 is provided on the top of each slider 13. The right end of the bidirectional threaded rod 14 extends into the interior of the frame 1, and the bidirectional threaded rod 14 is connected to the frame 1 by a bearing. The threads on the outer sides of both ends of the bidirectional threaded rod 14 have opposite directions. The two sliders 13 are slidably connected to the frame 1. Clamping plates 16 are slidably connected to the opposite faces of the vertical ends of the two bearing plates 12. The bearing plates 12 are slidably connected to the upper surface of the sliders 13, and the bearing plates 12 are arranged in an "L" shape. A first spring is installed between the bottom of one side of the clamping plate 16 and the inner wall of the bearing plate 12.

[0023] In one embodiment of the present invention, during operation, the single-cell honeycomb platform is stably placed on two support plates 12. A motor drives a bidirectional threaded rod 14 to rotate, causing the two support plates 12 to move towards each other under the action of threaded transmission. During this movement, the clamping plate 16 and the wedge-shaped blocks 1509 on the moving plate 1510 come into contact and engage, driving the clamping plate 16 to press downwards. This reliably clamps and positions the single-cell honeycomb platform, ensuring that the workpiece does not shift or shake during subsequent processing. Simultaneously, when the guide plate 1506 moves downwards, it synchronously drives the push plate 1508 to move downwards, with the push plate 1508 acting as a... The moving plate 1510 is driven to move downwards, causing the upper and lower wedge blocks 1509 to abut against each other and fit tightly together. This effectively prevents the wedge blocks 1509 from separating, loosening, or failing to clamp during subsequent stretching operations. This linkage locking structure significantly improves the clamping stability and positioning accuracy of the workpiece throughout the stretching and welding process, ensuring stable transmission of tensile force and smooth and reliable welding operations. It greatly improves the assembly accuracy and welding quality of the single-cell honeycomb platform. Furthermore, based on the above clamping and locking, the subsequent pressing action of the pressure rollers 8 on the upper side of the single-cell honeycomb platform can provide pressure from the top and bottom. The workpiece is subject to dual limiting constraints, further improving its positioning stability during stretching and welding, effectively preventing warping, shifting, or localized lifting, and ensuring uniform transmission of tensile force. Simultaneously, the clamping roller 8 is mounted on the movable rod 7, which is sleeved within the fixed cylinder 6 and cooperates with the buffer spring 9, giving the clamping roller 8 an elastic floating function. During clamping, the buffer spring 9 can adaptively extend and retract according to the flatness of the workpiece surface, thickness deviation, and clamping force, ensuring the clamping roller 8 remains in flexible contact with the single-cell honeycomb platform. This guarantees sufficient clamping force while avoiding indentations, deformation, or damage to the workpiece surface caused by rigid clamping. To further improve the adaptability and processing accuracy of the equipment, after the welding of the single honeycomb platform is completed, the bidirectional threaded rod 14 is driven by the motor to rotate in the opposite direction, and the two bearing plates 12 are moved in opposite directions. At this time, the upper and lower wedge blocks 1509 no longer resist and squeeze, so that the clamping plate 16 is reset upward under the elastic force of the first spring and no longer clamps and fixes the single honeycomb platform. At the same time, the cylinder 3 drives the mounting plate 5, welding head 4, pressing roller 8 and cleaning brush 1102 to reset upward, so that the pressing roller 8 no longer presses the single honeycomb platform. At this time, the push plate 1508 no longer pushes the moving plate 1510, so that the moving plate 1510 is reset upward under the elastic force of the second spring.

[0024] Dynamic welding stress relief components are provided on the upper surface of the frame 1, the side of the bearing plate 12, and the inner side of the gantry frame 2. The dynamic welding stress relief components include support plates 1501. Two support plates 1501 are fixedly connected to the left and right sides of the upper surface of the frame 1, and movable plates 1510 are slidably connected to the opposite surfaces of the two support plates 1501. Wedge blocks 1509 are fixedly connected at equal intervals to the lower surface of the movable plates 1510 and the upper surface of the clamping plate 16. Rollers 1502 are rotatably connected above the opposite vertical surfaces of the two bearing plates 12. Lifting plates 1504 are slidably connected to the side of the vertical beams of the gantry frame 2, and guide plates 1506 are fixedly connected to the bottom of the two lifting plates 1504. Push plates 1508 are bolted to the opposite surfaces of the two guide plates 1506. The two lifting plates 1504 are fixedly connected to the upper surface of the mounting plate 5 via telescopic linkage plates 1505. A fitting plate is rotatably connected to the bottom of the guide plates 1506. Plate 1507, movable plate 1510 extends through the interior of the vertical end of bearing plate 12 on the side away from supporting plate 1501, and the inclined surfaces of movable plate 1510 and wedge block 1509 on clamping plate 16 are in contact. A second spring is installed between the bottom of one side of movable plate 1510 and the inner wall of supporting plate 1501. The contact plate 1507 is inclined, and racks 1503 are slidably connected above the opposite surfaces of the two supporting plates 1501. The upper surface of the contact plate 1507... The guide plate 1506 is slidably connected to a guide seat. The guide plate 1506 is internally connected to a bearing with a lead screw 1513. A drive gear 1511 is fixedly sleeved on the outer side of the upper end of the lead screw 1513. A threaded cylinder 1512 is threadedly connected to the outer side of the lower end of the lead screw 1513. The outer side of the drive gear 1511 penetrates the interior of the guide plate 1506. The drive gear 1511 is positioned corresponding to the rack 1503. The bottom of the threaded cylinder 1512 is hinged to the top of the guide seat.

[0025] In one embodiment of the present invention, when the cylinder 3 drives the mounting plate 5 to move downward, the mounting plate 5 drives the guide plate 1506 to move downward synchronously, and the bottom bonding plate 1507 forms a pressing fit with the roller 1502, driving the two sets of rollers 1502 to move in opposite directions; the two sets of rollers 1502 respectively drive the connected bearing plate 12 to move synchronously in opposite directions, thereby applying a pre-tightening force to the single honeycomb platform, realizing initial pre-tensioning, so that the single honeycomb platform is kept flat and taut before welding, effectively avoiding problems such as looseness, warping, and gaps in the workpiece, laying the foundation for subsequent high-quality welding. Then, during the welding operation, the welding head 4 moves for welding, at which time the drive gear 1511 and the fixed rack 1503 always maintain meshing transmission. As the welding head 4 moves forward, the drive gear 1511 is passively rotated under the action of the rack 1503, and the torque is transmitted to the lead screw 1513, causing the lead screw 1513 to rotate accordingly. The rotation of the lead screw 1513 drives the threaded cylinder 1512 to move downward. During the downward movement of the threaded cylinder 1512, it pushes the bonding block to produce a downward deflection action. After deflection, the bonding block continues to act on the outer wall of the roller 1502, applying a continuously increasing lateral extrusion force to the roller 1502, so that the two sets of rollers 1502 continue to move in opposite directions on the basis of the initial pre-stretch, thereby realizing a secondary progressive stretching of the single honeycomb platform that gradually increases with the welding process. This can offset the welding stress in real time, suppress thermal deformation, prevent wrinkling and warping, and greatly improve the flatness and welding dimensional accuracy of the honeycomb platform.

[0026] Pre-cleaning components are provided on the side of the support 10 and the upper surface of the gantry frame 2. The pre-cleaning components include housings 1101. Two housings 1101 are fixedly connected to the opposite sides of the two supports 10. The interior of each housing 1101 is rotatably connected to a cleaning brush 1102 via a rotating shaft 1104. The cleaning brush 1102 is fixedly connected to the rotating shaft 1104 by bolts. The cleaning brush 1102 and the pressing roller 8 are set on the same horizontal plane. The outer side of the rotating shaft 1104 is connected to the shaft end of the support 10 by a bevel gear set 1105. Negative pressure suction nozzles 1103 are bolted to the front of each housing 1101. A collection box 1107 and a negative pressure fan 1108 are respectively installed on the upper surface of the crossbeam of the gantry frame 2. The two ends of the negative pressure fan 1108 are connected to the two negative pressure suction nozzles 1103 and the collection box 1107 via connecting hoses 1106.

[0027] In one embodiment of the present invention, before welding, the cylinder 3 drives the mounting plate 5 to move downward, causing the two sets of clamping rollers 8 and the two sets of cleaning brushes 1102 on the mounting plate 5 to move downward synchronously and come into contact with the upper surface of the single-cell honeycomb platform; subsequently, by the back-and-forth movement of the gantry frame 2 on the frame 1, in conjunction with the left-and-right movement of the mounting plate 5 on the gantry frame 2, the clamping rollers 8 and the cleaning brushes 1102 are driven to move back-and-forth and left-and-right across the surface of the single-cell honeycomb platform, performing a comprehensive pre-cleaning operation on the area of ​​the workpiece to be welded; during the cleaning process, the clamping rollers 8 contact the surface of the single-cell honeycomb platform and generate rolling friction, and the clamping rollers 8 rotate autonomously as the equipment moves; the rotational movement of the clamping rollers 8 is transmitted through the cone The gear set 1105 transmits power to the rotating shaft 1104, driving the rotating shaft 1104 to rotate synchronously, which in turn drives the cleaning brush 1102 to rotate at high speed, actively cleaning the dust, debris and impurities on the surface of the single honeycomb platform, significantly improving the cleanliness and cleaning efficiency of the pre-cleaning. At the same time, the negative pressure fan 1108 generates negative pressure suction, which adsorbs and collects the dust and impurities swept down by the cleaning brush 1102 through the negative pressure suction nozzle 1103, and then transports them to the collection box 1107 for centralized storage through the connecting hose 1106, preventing impurities from flying, scattering or re-adhering to the workpiece surface, ensuring that the welding area is clean and free of impurities, effectively reducing defects such as welding porosity and slag inclusions, and improving welding quality and workpiece appearance accuracy.

[0028] A method for using a welding center for platform machining includes the following steps: S1: Place the honeycomb platform on the support plate 12. The bidirectional threaded rod 14 drives the support plate 12 to move in opposite directions. The wedge block 1509 drives the clamping plate 16 to press the workpiece. The guide plate 1506 works together to achieve double limit. At the same time, the buffer spring 9 makes the pressing roller 8 flexibly fit the workpiece to avoid damage and improve positioning stability. S2: Before welding, cylinder 3 drives mounting plate 5 to move down, so that clamping roller 8 and cleaning brush 1102 fit against the workpiece. The movement of the equipment drives the two to clean the entire area. The clamping roller 8 rotates and drives the cleaning brush 1102 to rotate at high speed through bevel gear set 1105. It works with negative pressure suction nozzle 1103 to collect impurities and avoid welding defects. S3: Cylinder 3 drives mounting plate 5 to move down, which in turn drives guide plate 1506 to move synchronously. Through the pressing and cooperation of bonding plate 1507 and roller 1502, roller 1502 is driven to move away from each other, which drives bearing plate 12 to pre-stretch the honeycomb platform, ensuring that the workpiece is flat and taut, avoiding loosening and warping, and laying a foundation for high-quality welding. S4: When the welding head 4 moves to weld, the drive gear 1511 meshes with the rack 1503, which drives the lead screw 1513 to rotate, drives the threaded cylinder 1512 to move down, and pushes the bonding block to act on the roller 1502 to achieve secondary progressive stretching, offset welding stress, suppress thermal deformation, and improve the flatness of the platform and welding accuracy.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A welding center for platform processing, comprising a frame (1), a gantry frame (2) is slidably mounted on the upper surface of the frame (1), and a cylinder (3) is slidably mounted on the bottom of the crossbeam of the gantry frame (2), a mounting plate (5) is fixed to the telescopic end of the cylinder (3), and a welding head (4) is mounted on the lower surface of the mounting plate (5). Its features are: It also includes fixed cylinders (6), both of which are fixed on the left and right sides of the lower surface of the mounting plate (5), and movable rods (7) are slidably connected through the bottom of the inner walls of the two fixed cylinders (6). A buffer spring (9) is installed between the top of the movable rod (7) and the inner wall of the fixed cylinder (6), and a bracket (10) is movably connected to the bottom of the movable rod (7) through a universal ball. A pressing roller (8) is rotatably connected to the inner side of the bracket (10) through a shaft, and a pre-load is provided on the side of the bracket (10) and the upper surface of the gantry frame (2). The cleaning component has a motor fixedly installed on the right side of the frame (1) by bolts, and a bidirectional threaded rod (14) is fixed at the output end of the motor. The outer sides of both ends of the bidirectional threaded rod (14) are threadedly connected to sliders (13), and the top of the two sliders (13) is provided with a bearing plate (12). The opposite surfaces of the vertical ends of the two bearing plates (12) are slidably connected with clamping plates (16). The upper surface of the frame (1), the side of the bearing plate (12) and the inner side of the gantry frame (2) are provided with dynamic welding stress relief components.

2. The welding center for platform processing according to claim 1, characterized in that: The right end of the bidirectional threaded rod (14) extends into the interior of the frame (1), and the bidirectional threaded rod (14) and the frame (1) are connected by a bearing. The threads on the outer sides of the two ends of the bidirectional threaded rod (14) are opposite in direction. The two sliders (13) are slidably connected to the frame (1).

3. The welding center for platform machining according to claim 1, characterized in that: The support plate (12) is slidably connected to the upper surface of the slider (13), and the support plate (12) is arranged in an "L" shape. A first spring is installed between the bottom of one side of the clamping plate (16) and the inner wall of the support plate (12).

4. The welding center for platform machining according to claim 1, characterized in that: The dynamic welding stress relief assembly includes two support plates (1501), both of which are fixedly connected to the left and right sides of the upper surface of the frame (1). A movable plate (1510) is slidably connected to the opposite surfaces of the two support plates (1501). Wedge blocks (1509) are fixedly connected at equal intervals to the lower surface of the movable plate (1510) and the upper surface of the clamping plate (16). Rollers (1509) are rotatably connected above the opposite vertical surfaces of the two bearing plates (12). 2) The vertical beams of the gantry frame (2) are slidably connected to lifting plates (1504), and the bottom of the two lifting plates (1504) are fixedly connected to guide plates (1506). The opposite surfaces of the two guide plates (1506) are bolted to push plates (1508). The upper surfaces of the two lifting plates (1504) and the mounting plate (5) are fixedly connected by telescopic linkage plates (1505). The bottom of the guide plates (1506) is rotatably connected to a bonding plate (1507).

5. A welding center for platform machining according to claim 4, characterized in that: The movable plate (1510) extends through the interior of the vertical end of the bearing plate (12) on the side away from the supporting plate (1501), and the inclined surfaces of the movable plate (1510) and the wedge block (1509) on the clamping plate (16) are in contact with each other. A second spring is installed between the bottom of one side of the movable plate (1510) and the inner wall of the supporting plate (1501), and the bonding plate (1507) is inclined.

6. A welding center for platform machining according to claim 4, characterized in that: A rack (1503) is slidably connected above the opposite surfaces of the two supporting uprights (1501). A guide seat is slidably connected to the upper surface of the bonding plate (1507). A lead screw (1513) is connected to the internal bearing of the guide plate (1506). A drive gear (1511) is fixedly sleeved on the outer side of the upper end of the lead screw (1513). A threaded cylinder (1512) is threadedly connected to the outer side of the lower end of the lead screw (1513).

7. A welding center for platform machining according to claim 6, characterized in that: The outer side of the drive gear (1511) penetrates the interior of the guide plate (1506). The drive gear (1511) is positioned opposite to the rack (1503). The bottom of the threaded cylinder (1512) is hinged to the top of the guide seat.

8. A welding center for platform machining according to claim 1, characterized in that: The pre-cleaning assembly includes a housing (1101), two housings (1101) are fixedly connected to the opposite sides of two supports (10), and the interior of each housing (1101) is rotatably connected to a cleaning brush (1102) via a rotating shaft (1104). The outer side of the rotating shaft (1104) is connected to the shaft end of the support (10) via a bevel gear set (1105). The front of each housing (1101) is bolted with a negative pressure suction nozzle (1103). The upper surface of the crossbeam of the gantry frame (2) is respectively equipped with a collection box (1107) and a negative pressure fan (1108), and both ends of the negative pressure fan (1108) are connected to the two negative pressure suction nozzles (1103) and the collection box (1107) via connecting hoses (1106).

9. A welding center for platform machining according to claim 8, characterized in that: The cleaning brush (1102) is fixedly connected to the rotating shaft (1104) by bolts, and the cleaning brush (1102) and the pressing roller (8) are set on the same horizontal plane.

10. A method of using a welding center for platform machining, characterized in that: A welding center for platform machining according to any one of claims 1-9 includes the following steps: S1: Place the honeycomb platform on the support plate (12), and drive the support plate (12) to move towards each other through the bidirectional threaded rod (14). The wedge block (1509) drives the clamping plate (16) to press the workpiece, and works in conjunction with the guide plate (1506) to achieve double limiting. At the same time, the buffer spring (9) makes the roller (8) flexibly fit the workpiece to avoid damage and improve positioning stability. S2: Before welding, the cylinder (3) drives the mounting plate (5) to move down, so that the pressing roller (8) and cleaning brush (1102) fit into the workpiece. The equipment moves to clean the entire area. The roller (8) rotates and drives the cleaning brush (1102) to rotate at high speed through the bevel gear set (1105). It works with the negative pressure suction nozzle (1103) to collect impurities and avoid welding defects. S3: The cylinder (3) drives the mounting plate (5) to move down, which in turn drives the guide plate (1506) to move synchronously. Through the pressing and cooperation of the bonding plate (1507) and the roller (1502), the roller (1502) is driven to move away from each other, which drives the bearing plate (12) to pre-stretch the honeycomb platform, ensuring that the workpiece is flat and taut, avoiding loosening and warping, and laying a high-quality welding foundation. S4: When the welding head (4) moves to weld, the drive gear (1511) meshes with the rack (1503), which drives the lead screw (1513) to rotate, drives the threaded cylinder (1512) to move down, and pushes the bonding block to act on the roller (1502) to achieve secondary progressive stretching, offset welding stress, suppress thermal deformation, and improve the flatness of the platform and welding accuracy.

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