Intermittent welding of a web

Abstract

The utility model discloses a kind of intermittent weldings of web plate, belong to workpiece welding technical field.The device includes guide rail, welding torch, front and rear moving frame, left and right moving plate and up and down moving plate, guide rail upper surface is equipped with rack, front and rear moving frame is engaged by driving gear and rack, realize the front and rear movement along guide rail.Fixing roller is equipped below front and rear moving frame, the other side is equipped with movable roller, both respectively with guide rail rolling contact;Front and rear moving frame inside is provided with quick release carriage, slide groove sliding connection is connected between slide carriage and frame side, frame is equipped with quick clamp, the movable end of clamp is connected with quick release carriage, can drive movable roller to clamp or loosen guide rail, realize the quick installation and disassembly of frame to guide rail.The device compact structure, installation is quick, stable operation, can realize high-precision intermittent welding in narrow space, significantly improve welding efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of workpiece welding technology, specifically to a method of intermittent welding of stiffening plates. Background Technology

[0002] Existing welding technology is widely used in steel structures, crane beams, and frame structures. Especially in the manufacturing process of crane beams, components such as stiffening plates and angle steel need to be welded within the beam's cavity or confined spaces. However, traditional manual welding methods face significant challenges in this scenario. First, the limited space makes it difficult to access and operate manual welding torches, restricting torch posture, creating numerous blind spots, and making continuous weld tracking difficult. Second, the limited accuracy of manual positioning leads to weld misalignment, intermittent and uneven welding, thus affecting structural strength and finished product quality.

[0003] To improve upon the above situation, some automated welding equipment that can move along guide rails or tracks has emerged on the market. These devices use guide rails to move the welding mechanism along a preset trajectory of the component, achieving automated welding. However, existing technologies still have the following shortcomings: 1. When installing guide rails or moving frames inside the crane beam, the operating space is limited, and traditional fixing methods (such as screws and clamps) are time-consuming and labor-intensive, affecting production efficiency.

[0004] 2. Inadequate guide rail fixing method: Existing guide rails usually require external tooling or a large number of bolts for fixing, and are difficult to release quickly after disassembly.

[0005] 3. When the welding mechanism moves along the guide rail, due to poor structure of the fixed rollers or load-bearing device, track vibration, deviation or loosening is likely to occur, reducing welding accuracy.

[0006] Patent document CN213969654U discloses a longitudinal drive method that uses gears meshing with the inner rack of the guide rail to achieve automated mobile welding; however, its structure is complex and occupies a large space, and the guide rail needs to be installed by bolts or a fixed structure, lacking quick assembly and disassembly functions, making it difficult to use in narrow spaces such as crane beams; similarly, patent document CN109940331B discloses a method that uses an electromagnet to attract and fix the workpiece and cooperates with a multi-axis linkage control system to achieve intermittent start and stop of the welding head; however, it cannot solve the problem of quick installation and clamping of the guide rail in narrow spaces; it still cannot meet the requirements of automatic welding in narrow spaces.

[0007] Patent document CN109465578A discloses a welding torch moving along a ring-shaped guide rail to achieve efficient automatic welding. However, this technology is mainly aimed at circular tube or ring-shaped workpiece structures, and does not involve the guide rail moving mechanism inside a straight beam. Moreover, its clamping method still relies on bolts or mechanical locking, and the disassembly and assembly process is cumbersome and unsuitable for the construction environment inside a large beam.

[0008] Therefore, there is an urgent need for a device that can be quickly assembled and disassembled in confined spaces, operate stably, and has multi-axis motion control, in order to overcome the shortcomings of traditional equipment in terms of installation, operation, disassembly, and welding control. Utility Model Content

[0009] The technical problem to be solved by this utility model is to overcome the existing defects and provide a rib plate intermittent welding method. By setting a linkage structure of quick-release slide and quick clamp between the guide rail and the moving frame, the movable roller and the fixed roller can quickly clamp or release the guide rail, realizing the rapid installation and disassembly of the welding device in a confined space, which can effectively solve the problems in the background art.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a rib plate intermittent welding method, comprising a guide rail, a welding torch, a front-to-back moving frame, left-to-right moving plates, and a top-to-bottom moving plate. A rack is provided on the upper surface of the guide rail. The front-to-back moving frame meshes with the rack via a drive gear. Fixed rollers are provided on the lower surface of the front-to-back moving frame, and movable rollers are provided on the other side of the front-to-back moving frame. The fixed rollers and movable rollers respectively roll in contact with the guide rail. The cooperation between the fixed rollers and movable rollers ensures the structural stability of the front-to-back moving frame during movement. A quick-release slide is provided inside the front-to-back moving frame, and the quick-release slide is slidably connected to a groove on the side of the front-to-back moving frame. A quick clamp is provided on the front-to-back moving frame. The movable end connects to the quick-release slide, and the quick-clamping mechanism drives the quick-release slide to move, thereby causing the movable rollers to clamp or release the guide rail, realizing the quick assembly and disassembly of the front and rear moving frames relative to the guide rail, meeting usage requirements; the left and right moving plates are located on the sides of the front and rear moving frames, and the up and down moving plates are located on the sides of the left and right moving plates. The welding torch is located on the up and down moving plates, which can drive the welding torch to move up and down. When the welding torch detects the edge of the angle steel, the up and down moving plates drive the welding torch to rise to stop welding; when it moves to the other side of the angle steel, the welding torch descends to resume welding, thus realizing intermittent welding of the workpiece. The left and right moving plates are equipped with laser sensors, which detect the distance to the position of the steel plate to be welded.

[0011] Furthermore, a bracket is provided on the lower surface of the guide rail, and an electromagnet is provided below the bracket. The electromagnet and the bracket can be quickly fixed together, improving work efficiency.

[0012] Furthermore, a side fixing bracket is provided on the side of the electromagnet, and a positioning rod is provided on the side fixing bracket. The positioning rod is used to initially position the left and right sides of the welding.

[0013] Furthermore, the left and right moving plates are set on the sides of the front and rear moving frames through a left and right moving mechanism. The left and right moving mechanism includes a left and right slide rail slider assembly, a lead screw, and a second motor for driving the lead screw. The left and right moving plates are respectively connected to the slider of the slide rail slider assembly and the lead screw nut. The second motor drives the lead screw to rotate, thereby driving the left and right moving plates to move.

[0014] Furthermore, it also includes a third motor, which is mounted on the left and right moving plates. The upper and lower moving plates are connected to the left and right moving plates through a vertical slide rail slider assembly. The output shaft of the third motor drives the upper and lower moving plates to move up and down through a gear and rack assembly.

[0015] Furthermore, a rotating shaft is provided on the front and rear moving frame, a drive gear is provided on the rotating shaft, a clutch is provided on the rotating shaft, a clutch handle for driving the clutch is provided on the outside of the front and rear moving frame, and a motor for driving the rotating shaft is provided on the front and rear moving frame.

[0016] Furthermore, a control box is installed above the front and rear moving frames, and the control box is electrically connected to motor one, motor two, motor three, and laser sensor respectively.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a linkage structure of quick-release slide and quick clamp between the guide rail and the moving frame, the movable roller and the fixed roller can quickly clamp or release the guide rail, realizing the rapid installation and disassembly of the welding device in a confined space. This design effectively overcomes the problems of complex installation and time-consuming adjustment of existing welding equipment, greatly improving on-site assembly efficiency and equipment maintenance convenience. At the same time, through the cooperation of the fixed roller and the movable roller, the front and rear moving frames remain stable when running on the guide rail, significantly improving the smoothness of movement and structural reliability during the welding process.

[0018] 2. It adopts a multi-axis linkage structure with independent drive of three axes: front and back, left and right, and up and down. Laser sensors are set on the left and right moving plates to detect the boundary position of the stiffening plate or angle steel in real time, thereby realizing the automatic lifting and lowering of the welding torch and the switching of welding status.

[0019] 3. By setting an auxiliary fixing structure of electromagnet and bracket below the guide rail, the guide rail is quickly adsorbed and positioned, ensuring the stability and vibration resistance of the entire device when running inside the metal beam; the device has a compact overall structure and reasonable layout, and is suitable for automatic welding operations in confined spaces such as crane beams; compared with the prior art, this utility model has achieved significant technical progress in terms of installation convenience, operational stability and welding control precision. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the left-side structure of this utility model; Figure 3 This is a schematic diagram of the structure of the present invention without the control box; Figure 4 This is a schematic diagram of the internal structure of the front and rear movable frame of this utility model; Figure 5 This is a top view of the structure of this utility model.

[0021] In the diagram: 1. Control box, 2. Clutch handle, 3. Positioning rod, 4. Electromagnet, 5. Guide rail, 6. Fixed roller, 7. Quick clamp, 8. Laser sensor, 9. Welding torch, 10. Rack, 11. Bracket, 12. Side fixing bracket, 13. Front and rear moving frame, 14. Left and right moving mechanism, 15. Up and down moving mechanism, 16. Slide, 17. Quick release slide, 18. Movable roller, 19. Up and down moving plate, 20. Left and right moving plate, 21. Drive gear, 22. Rotary shaft, 23. Clutch, 24. Vertical slide rail slider assembly, 25. Left and right slide rail slider assembly, 26. Motor 1, 27. Motor 2, 28. Motor 3. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1

[0023] Please see Figure 1-5 This utility model provides a technical solution: a rib plate intermittent welding method, including a guide rail 5, a welding torch 9, a front-to-back moving frame 13, a left-to-right moving plate 20, and a top-to-bottom moving plate 19; a rack 10 is provided on the upper surface of the guide rail 5, and the front-to-back moving frame 13 meshes with the rack 10 through a drive gear 21; a fixed roller 6 is provided on the lower surface of the front-to-back moving frame 13, and a movable roller 18 is provided on the other side. The fixed roller 6 and the movable roller 18 respectively roll in contact with the guide rail 5, and the two cooperate with each other to ensure that the front-to-back moving frame 13 maintains structural stability when moving along the guide rail.

[0024] The front and rear moving frame 13 is equipped with a quick-release slide 17 inside, which is slidably connected to the slide groove 16 on the side of the front and rear moving frame 13. A quick clamp 7 is installed on the front and rear moving frame 13, and the movable end of the quick clamp 7 is connected to the quick-release slide 17. When the quick clamp 7 is operated, it drives the quick-release slide 17 to move along the slide groove 16, thereby driving the movable roller 18 to clamp or release relative to the guide rail 5. This design realizes the quick loading, unloading and locking function of the front and rear moving frame 13 relative to the guide rail 5, which facilitates the rapid deployment and retrieval of equipment in confined spaces.

[0025] The left and right moving plate 20 is set on the side of the front and rear moving frame 13, and the up and down moving plate 19 is set on the side of the left and right moving plate 20. The welding torch 9 is mounted on the up and down moving plate 19, which can drive the welding torch 9 to move up and down in the vertical direction. When the laser sensor 8 detects the edge of the weld or the position of the angle steel, the up and down moving plate 19 drives the welding torch 9 to rise automatically to stop welding. When the weld area is detected to re-enter the welding range, the welding torch 9 automatically descends to resume welding, thereby realizing the intermittent welding operation of the workpiece. The left and right moving plate 20 is equipped with a laser sensor 8, which is used to detect the spatial position of the welding target in real time to ensure that the welding torch accurately follows the weld trajectory during the welding process.

[0026] This embodiment utilizes the meshing relationship between the rack 10 and the drive gear 21 to achieve linear movement of the front and rear moving frame 13 along the guide rail 5; the symmetrical arrangement of the fixed roller 6 and the movable roller 18 provides stable rolling support, making the movement smooth and resistant to overturning; the quick clamp 7 cooperates with the quick-release slide 17, and through mechanical levers or eccentric transmission structures, converts manual operation into the clamping force of the movable roller 18, realizing tool-free quick installation and disassembly; the up and down position of the welding torch 9 is controlled by the up and down moving plate 19, and with the feedback signal from the laser sensor 8, a closed-loop system of "detection-control-action" is formed, which can automatically perform intermittent welding according to the welding gap, achieving the effects of energy saving and weld heat control optimization.

[0027] Through the above design, the device can be quickly installed and disassembled in confined spaces; the roller structure ensures stable movement; and laser detection enables automatic control of intermittent welding, significantly improving welding accuracy and efficiency.

[0028] In the above embodiments, the quick clamp 7 can adopt a mechanical eccentric or threaded self-locking structure; the quick-release slide 17 can be realized by a slider and guide rail structure; the movable roller 18 can be replaced by a high-temperature resistant guide wheel or a metal roller with a self-lubricating layer; the rack 10 of the guide rail 5 can also be realized by thread machining or modular rack assembly; the laser sensor 8 can be replaced by an infrared or visual recognition sensor according to the actual application.

[0029] In another embodiment, a bracket 11 is provided on the lower surface of the guide rail 5, and an electromagnet 4 is installed below the bracket 11. When the electromagnet 4 is energized, it generates a magnetic attraction with the bracket 11, which is used to quickly attract the guide rail to the metal component and achieve a stable fixation of the guide rail. When disassembly is required, the power can be cut off to release it quickly. This electromagnetic adsorption positioning structure reduces the traditional bolt tightening process and significantly improves the speed of installation and adjustment.

[0030] Based on the above implementation method, a side fixing bracket 12 is installed on the side of the electromagnet 4, and a positioning rod 3 is provided on the fixing bracket 12 to provide preliminary lateral positioning during device installation; the operator can adjust the length or angle of the positioning rod 3 to achieve precise centering of the guide rail 5 relative to the workpiece, ensuring accurate starting position of the welding gun.

[0031] In an improved embodiment, the left and right moving plate 20 is mounted on the side of the front and rear moving frame 13 via the left and right moving mechanism 14; the left and right moving mechanism 14 includes a left and right slide rail slider assembly 25, a lead screw, and a second motor 27 for driving the lead screw; the left and right moving plate 20 is fixedly connected to the slider and the lead screw nut respectively; when the second motor 27 drives the lead screw to rotate, the left and right moving plate 20 moves laterally along the slide rail slider assembly 25.

[0032] The vertical moving plate 19 is connected to the horizontal moving plate 20 via the vertical slide rail slider assembly 24; the motor 28 is mounted on the horizontal moving plate 20, and its output shaft drives the vertical moving plate 19 to move precisely in the vertical direction via the gear and rack assembly.

[0033] This three-axis structure (front and back, left and right, up and down) forms a complete three-dimensional controllable motion system, enabling the welding torch 9 to be precisely positioned in space at multiple angles and positions, providing flexible path control for intermittent welding of different types of stiffening plates and angle steel.

[0034] In another embodiment, a rotating shaft 22 is provided on the front and rear moving frame 13, and a drive gear 21 is mounted on the rotating shaft 22; a clutch 23 is provided at one end of the rotating shaft 22, and a handle 2 for controlling the clutch is installed on the outside; a motor 26 is provided on the front and rear moving frame 13, which drives the rotating shaft 22 to rotate through a coupling, thereby realizing the meshing transmission between the gear 21 and the rack 10; when manual adjustment or disengagement of power is required, the clutch 23 can be disengaged or engaged through the handle 2, thereby realizing the switching of power output; this structure can freely switch between automatic and manual operation, improving the operational flexibility and safety of the equipment.

[0035] In one specific structure, a control box 1 is installed above the front and rear moving frame 13; the control box 1 is electrically connected to motor 1 26, motor 27, motor 3 28 and laser sensor 8 respectively, and is used to centrally manage and coordinate motion control and sensing signals to realize automated welding operation; the control box 1 can integrate a programmable logic controller (PLC) or an embedded control unit to realize automatic control of welding trajectory, welding pitch and intermittent cycle through preset program.

[0036] In use, the guide rail 5 is first attached to the surface of the metal workpiece by electromagnet 4, and the position is calibrated by positioning rod 3. Then, the front and rear moving frame 13 is installed on the guide rail 5, and the quick clamp 7 is operated to clamp the guide rail with the movable roller 18 to achieve a stable connection. After the equipment is started, motor 1 26 drives the front and rear moving frame 13 to move along the guide rail, and motors 27 and 28 control the horizontal and vertical adjustment of the welding torch, respectively. Laser sensor 8 detects the surface features of the workpiece in real time and feeds the signal back to control box 1. The control system automatically adjusts the lifting and lowering of welding torch 9 accordingly to achieve intermittent welding. The system can adjust the stroke and welding parameters according to different workpiece sizes and welding conditions to achieve automated and high-precision intermittent welding effect.

[0037] This utility model has a compact overall structure and a high degree of modularity; it achieves the unity of rapid assembly and disassembly, stable operation and intelligent control; it is particularly suitable for automatic welding of stiffening plates inside crane beams, box beams and other narrow working conditions, and has good industrial promotion value.

[0038] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A method for intermittent welding of stiffening plates, comprising a guide rail (5), a welding torch (9), a front-to-back moving frame (13), a left-to-right moving plate (20), and a top-to-bottom moving plate (19), characterized in that: A rack (10) is provided on the upper surface of the guide rail (5). The front and rear moving frame (13) meshes with the rack (10) through a drive gear (21). A fixed roller (6) is provided on the lower surface of the front and rear moving frame (13). A movable roller (18) is provided on the other side of the front and rear moving frame (13). The fixed roller (6) and the movable roller (18) respectively roll in contact with the guide rail (5). A quick-release slide (17) is provided inside the front and rear moving frame (13). The quick-release slide (17) and the front and rear moving frame (13) are connected. The side slide (16) is slidably connected, and the front and rear moving frame (13) is provided with a quick clamp (7). The movable end of the quick clamp (7) is connected to the quick release slide (17). The left and right moving plate (20) is provided on the side of the front and rear moving frame (13), and the upper and lower moving plate (19) is provided on the side of the left and right moving plate (20). The welding torch (9) is provided on the upper and lower moving plate (19). The upper and lower moving plate (19) can drive the welding torch (9) to move up and down. The left and right moving plate (20) is provided with a laser sensor (8).

2. The intermittent welding of stiffening plates according to claim 1, characterized in that: A bracket (11) is provided on the lower surface of the guide rail (5), and an electromagnet (4) is provided below the bracket (11). The electromagnet (4) and the bracket (11) can be quickly fixed, which improves work efficiency.

3. The intermittent welding of stiffening plates according to claim 2, characterized in that: The electromagnet (4) is provided with a side fixing bracket (12), and a positioning rod (3) is provided on the side fixing bracket (12).

4. The intermittent welding of stiffening plates according to claim 1, characterized in that: The left and right moving plate (20) is set on the side of the front and rear moving frame (13) through the left and right moving mechanism (14). The left and right moving mechanism (14) includes the left and right slide rail slider assembly (25), the lead screw and the motor (27) for driving the lead screw. The left and right moving plate (20) is connected to the slider and the lead screw nut of the slide rail slider assembly (25) respectively.

5. The intermittent welding of stiffening plates according to claim 4, characterized in that: It also includes a third motor (28), which is mounted on the left and right moving plate (20). The upper and lower moving plate (19) is connected to the left and right moving plate (20) through the vertical slide rail slider assembly (24). The output shaft of the third motor (28) drives the upper and lower moving plate (19) to move up and down through the gear and rack assembly.

6. The intermittent welding of stiffening plates according to claim 5, characterized in that: A rotating shaft (22) is provided on the front and rear moving frame (13), a drive gear (21) is provided on the rotating shaft (22), a clutch (23) is provided on the rotating shaft (22), a clutch handle (2) for driving the clutch (23) is provided on the outside of the front and rear moving frame (13), and a motor (26) for driving the rotating shaft (22) is provided on the front and rear moving frame (13).

7. The intermittent welding of stiffening plates according to claim 1, characterized in that: A control box (1) is provided above the front and rear moving frame (13). The control box (1) is electrically connected to motor one (26), motor two (27), motor three (28) and laser sensor (8).

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