Semi-automatic welding working platform for aluminum alloy thin-wall air pipe

Abstract

The utility model belongs to the technical field of air pipe machining, and particularly relates to a semi-automatic welding working platform for an aluminum alloy thin-wall air pipe, which mainly comprises a table top, a welding opening, a shaping roller, a locking piece and a seam closing assembly. A trolley track is arranged on the top of the table top, and a welding machine with a welding gun is installed on the track. The welding opening is formed in the top of the table top and parallel to the track; the shaping roller is detachably mounted at the bottom of the welding opening through a locking piece; the seam closing assembly is located at the bottom of the table top, synchronously moves along with the welding machine and is used for reducing air pipe gaps connected to the shaping rollers in a sleeving mode. A welding gun is arranged in the welding opening and is aligned with the air pipe gap for welding. According to the design, a semi-automatic welding mode is utilized, the air pipe is positioned through the shaping roller, the stability in the welding process is ensured, the welding speed and quality are improved, and the requirement for the skill of a welder is reduced, so that the production efficiency is improved, and the manufacturing period of the air pipe is guaranteed. In addition, the functionality and reliability of the equipment are further enhanced through the design of the locking piece and the seam closing assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of air duct processing, and particularly relates to a semi-automatic welding working platform for aluminum alloy thin-wall air ducts. Background Technique

[0002] With the increasingly urgent ship production schedule, the welding and manufacturing of aluminum alloy thin-wall air ducts for aluminum alloy series ships start in the same batch and the production plan nodes are concentrated. Relying on a single TIC welding method, it is impossible to meet the requirements of the air duct manufacturing cycle for this series of products. In order to shorten the air duct welding and manufacturing cycle, through the analysis of the air duct welding process flow, it is finally determined to improve the efficiency in the process of pipe fitting blanking, rolling, prefabricating into straight pipe sections and welding. The characteristics of the pipe fittings in this process are as follows: the welds are all butt joints, the weld length is 1.5 m, the number of prefabricated welded straight pipe sections for each type of product is about 300, and the prefabricated welding time nodes are concentrated. According to on-site statistics, it takes 20 minutes for a skilled welder to weld a pipe fitting (1.5 m) using TIC welding. Under the full-load working state, the number of completed pipe fittings per day is only 21. Moreover, in manual welding, the appearance of the welds cannot be continuously maintained stably, resulting in waste and rework phenomena, directly affecting the next process (shrimp shell bend blanking) and the manufacturing cycle of the overall air duct. There is an urgent need to solve the problems of stable welding quality, insufficient human resources and efficiency improvement. Content of the Utility Model

[0003] The purpose of the utility model is to provide a semi-automatic welding working platform for aluminum alloy thin-wall air ducts. The semi-automatic welding method relieves the high requirements for welder skill levels in thin plate welding, the weld quality and the appearance of the welds are stable, solves the problem of insufficient human resources, and provides strong support for completing the air duct manufacturing cycle node plan.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: a semi-automatic welding working platform for aluminum alloy thin-wall air ducts, including: a tabletop, on the top of which a welding machine with a welding torch is installed through a trolley track; a welding port, which is opened on the top of the tabletop and is arranged parallel to the trolley track; a sizing roller, which is detachably installed at the bottom of the welding port through a locking member and the diameter of which is smaller than the diameter of the aluminum alloy thin-wall air duct; a seam closing assembly, which is arranged at the bottom of the tabletop and moves synchronously with the welding machine, and is used to narrow the gap of the aluminum alloy thin-wall air duct sleeved outside the sizing roller; wherein, the welding torch of the welding machine is located in the welding port and can weld the gap of the aluminum alloy thin-wall air duct located in the welding port.

[0005] Preferably, the locking member includes: a locking port, which is opened at both ends of the welding port; a locking rod, which is movably connected in the locking port; wherein, the lower end of the locking rod is movably connected to the end of the sizing roller.

[0006] Preferably, the locking rod includes: a ball screw, the ball head of the ball screw is movably connected to the end of the shaping rod; a ring nut, the ring nut is threadedly connected to the screw part of the ball screw; wherein, an opening is formed at the end of the shaping rod, and a ball socket matching the ball head is formed on the inner side of the opening.

[0007] Preferably, a limiting rod for limiting the inclination angle of the shaping rod is provided at one end of the shaping rod.

[0008] Preferably, a chute parallel to the welding joint is formed at the top of the tabletop, and a slider for connecting the seam closing assembly and the welding machine is slidably connected inside the chute.

[0009] Preferably, the seam closing assembly includes: a moving member installed at the bottom of the tabletop; a power member installed on the moving member; a seam closing roller installed on the power member and capable of fitting against the outer wall of the thin-walled aluminum alloy air duct under the drive of the power member; wherein, a connecting rod is connected between the moving member and the slider.

[0010] Preferably, the moving member includes: slide rails symmetrically arranged on both sides of the welding joint; sliding blocks are slidably connected to the outside of the slide rails, and both groups of sliding blocks are fixedly connected to the connecting rod.

[0011] Preferably, the power member includes: an electric push rod installed on the sliding block; an installation frame is connected to the end of the electric push rod, and the seam closing roller is rotatably installed on the installation frame.

[0012] Preferably, the seam closing roller is arranged in a conical structure.

[0013] Preferably, a guide rod is connected between the installation frame and the sliding block.

[0014] The technical effects and advantages of the present utility model: A semi-automatic welding workbench for thin-walled aluminum alloy air ducts proposed by the present utility model has the following advantages compared with the prior art:

[0015] By setting the tabletop, shaping rod, and welding machine with a welding torch installed on the tabletop through a trolley track, the air duct is positioned by the shaping rod, and a semi-automatic welding method is adopted, which can effectively improve the welding speed and welding quality. By setting specific structures such as the shaping rod, locking member, and seam closing assembly, the thin-walled aluminum alloy air duct can be well supported during the welding process, ensuring the stability and consistency of the weld seam, reducing the dependence on the skill level of welders, improving production efficiency, and providing technical support for completing the manufacture of air ducts on schedule. Description of the Drawings

[0016] Figure 1Schematic three-dimensional structure diagram of the semi-automatic welding workbench for thin-walled aluminum alloy air ducts of the present utility model;

[0017] Figure 2 Schematic right-view structure diagram of the semi-automatic welding workbench for thin-walled aluminum alloy air ducts of the present utility model;

[0018] Figure 3 Schematic bottom-view structure diagram of the semi-automatic welding workbench for thin-walled aluminum alloy air ducts of the present utility model;

[0019] Figure 4 Schematic structure diagram of the tabletop of the present utility model;

[0020] Figure 5 Schematic structure diagram of the seam-closing assembly of the present utility model;

[0021] Figure 6 Schematic structure diagram of the sliding block of the present utility model;

[0022] Figure 7 Schematic structure diagram of the shaping rod of the present utility model;

[0023] Figure 8 Schematic structure diagram of the ball socket of the present utility model;

[0024] Figure 9 Schematic working state diagram of the semi-automatic welding workbench for thin-walled aluminum alloy air ducts of the present utility model;

[0025] Figure 10 Schematic loading or unloading state diagram of the semi-automatic welding workbench for thin-walled aluminum alloy air ducts of the present utility model.

[0026] In the figure:

[0027] 1. Tabletop;

[0028] 2. Welding machine;

[0029] 3. Welding joint;

[0030] 4. Shaping rod; 401. Opening; 402. Ball socket; 403. Limiting rod;

[0031] 5. Locking part; 501. Locking opening; 502. Locking rod; 503. Ball-head screw; 504. Hoisting ring nut;

[0032] 6. Seam-closing assembly; 601. Moving part; 602. Power part; 603. Seam-closing roller; 604. Connecting rod; 605. Slide rail; 606. Sliding block; 607. Electric push rod; 608. Mounting bracket; 609. Guide rod;

[0033] 7. Chute;

[0034] 8. Slide block. Specific Embodiments

[0035] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The specific embodiments described herein are only used to explain the present utility model, and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] The present utility model provides a semi-automatic welding workbench for aluminum alloy thin-wall air ducts, aiming to relieve the high requirements for welder skill levels in thin-plate welding through semi-automatic welding methods, making the weld quality and the appearance formation of the welds stable, solving the shortage of human resources, and providing strong support for completing the node plan of the air duct manufacturing cycle. Specifically as follows:

[0037] As Figure 1 shown, the semi-automatic welding workbench for aluminum alloy thin-wall air ducts in this embodiment includes: a tabletop 1, a welding machine 2, a welding joint 3, a shaping rod 4, a locking member 5, and a seam closing assembly 6.

[0038] Among them, the tabletop 1 is the basic part of the entire welding workbench. It not only provides enough space to place and operate the aluminum alloy thin-wall air duct, but also integrates a trolley track system, enabling the welding machine to move smoothly along the set path.

[0039] The welding machine 2 with a welding torch is installed on the top of the tabletop 1 through the trolley track; the welding machine 2 is an automated device equipped with a welding torch, and it is installed on the trolley track on the top of the tabletop 1. The welding machine 2 can be programmed or manually controlled as needed to ensure precise welding along the seam of the aluminum alloy thin-wall air duct.

[0040] The welding joint 3 is opened on the top of the tabletop 1 and is arranged parallel to the trolley track. The welding joint 3 is an opening on the tabletop 1, and it is arranged parallel to the trolley track, so that the welding machine 2 can move along the welding joint 3. The design of the welding joint 3 is to allow the welding torch to directly contact and act on the seam of the aluminum alloy thin-wall air duct, thereby achieving precise welding.

[0041] The shaping rod 4 is detachably installed at the bottom of the welding joint 3 through the locking member 5. The shaping rod 4 is a component installed below the welding joint 3, and its diameter is smaller than the inner diameter of the aluminum alloy thin-wall air duct. In this way, the air duct can be sleeved on the shaping rod and maintain a stable shape during the welding process. Through the locking member 5, the shaping rod can be conveniently installed and removed from the air duct.

[0042] The seam closing assembly 6 is arranged at the bottom of the tabletop 1 and moves synchronously with the welding machine 2, and is used to narrow the gap of the aluminum alloy thin-walled air duct sleeved outside the sizing rod 4; specifically, the seam closing assembly 6 is located below the tabletop 1 and moves synchronously with the movement of the welding machine 2. Its working principle is to act on the aluminum alloy thin-walled air duct through mechanical force to make its gap smaller, so as to provide better conditions for welding and ensure that the air duct remains tightly fitted before and during welding.

[0043] Furthermore, the welding torch of the welding machine 2 is located in the welding joint 3, and can weld the gap of the aluminum alloy thin-walled air duct located in the welding joint 3.

[0044] Specifically, as Figure 9 shown, when using this welding workbench, first, the aluminum alloy thin-walled air duct is sleeved on the sizing rod 4, and then the locking member 5 is adjusted to fix the sizing rod and the air duct, so that the air duct is closely attached to the bottom of the welding joint 3. Then start the welding machine 2, and through the action of the seam closing assembly 6, the gap of the air duct is reduced to a suitable position. As the welding machine 2 advances along the trolley track, the welding torch is controlled automatically or manually to complete the continuous welding of the air duct gap. Such a design not only improves the welding efficiency, but also ensures the consistency and reliability of the welding quality.

[0045] In an embodiment, as Figure 7 and Figure 8 shown, the locking member 5 is composed of a locking opening 501 and a locking rod 502. The locking opening 501 is located at both ends of the welding joint 3, and the locking rod 502 is movably connected in the locking opening 501, and its lower end is connected to the end of the sizing rod 4.

[0046] The locking rod 502 includes: a ball head screw 503 and a lifting eye nut 504; the ball head part of the ball head screw 503 is movably connected to the end of the sizing rod 4.

[0047] Specifically, the ball head screw 503 is a screw with a spherical head, and the ball head part can be embedded into the ball socket 402 at the end of the sizing rod 4 to form a movable connection. This design allows the sizing rod 4 to rotate or tilt freely within a certain range, so as to better adapt to aluminum alloy thin-walled air ducts of different shapes. The lifting eye nut 504 is a nut that can be screwed onto the screw part of the ball head screw 503. By adjusting the position of the lifting eye nut 504, the tightening degree of the ball head screw 503 can be changed, and thus the stability of the sizing rod 4 can be adjusted.

[0048] Specifically, the lifting eye nut 504 is threadedly connected to the screw part of the ball head screw 503; wherein, an opening 401 is provided at the end of the sizing rod 4, and a ball socket 402 matching the ball head part is provided on the inner side of the opening 401.

[0049] The opening 401 is an opening located at the end of the shaping rod 4, and its existence facilitates the installation and removal of the locking rod 502. Inside the opening 401, there is a ball socket 402 that matches the ball head portion of the ball head screw 503. This ball socket 402 allows the ball head portion of the ball head screw 503 to be embedded therein, forming a stable connection point.

[0050] It is worth mentioning that the outer diameter of the eye nut 504 should be smaller than the outer diameter of the shaping rod 4 to prevent the eye nut 504 from jamming the air duct A, Figure 9 and Figure 10 A in represents the air duct.

[0051] The specific operation steps are as follows:

[0052] Assemble the locking component: Insert the ball head portion of the ball head screw 503 into the ball socket 402 at the end of the shaping rod 4, and then screw the eye nut 504 tightly onto the screw portion of the ball head screw 503 to ensure a firm connection between the shaping rod 4 and the locking rod 502.

[0053] Adjust the locking component: Adjust the tightness of the locking component 5 by rotating the eye nut 504 to ensure that the shaping rod 4 does not slide easily and can be adjusted conveniently when necessary.

[0054] Install the shaping rod: Install the assembled shaping rod 4 below the welding joint 3 through the locking component 5 to ensure its correct position.

[0055] Adjustment during use: During the welding process, if it is necessary to adjust the position or angle of the shaping rod 4, fine adjustment can be made by loosening the eye nut 504, and then tightening it again to fix the position.

[0056] Through the above design, the locking component 5 not only ensures the installation stability of the shaping rod 4 but also provides flexibility for quick adjustment according to the needs under different working conditions. This greatly improves the efficiency and quality of the welding work.

[0057] In addition, when replacing the air duct, only the locking component 5 at one end of the shaping rod 4 without the limiting rod 403 needs to be loosened. A limiting rod 403 for limiting the tilting angle of the shaping rod 4 is provided at one end of the shaping rod 4, which can limit the tilting angle of the shaping rod 4 and facilitate loading or unloading, as Figure 10 shown.

[0058] It should be noted that in this embodiment, as Figure 4 shown, the two sets of locking openings 501 opened thereon have inconsistent shapes: one is in the shape of an opening and the other is in the shape of a through hole. This design is because in actual operation, only by lowering one end of the shaping rod 4, the positioning of the other end of the shaping rod 4 can be achieved and its movement can be avoided.

[0059] As Figures 3 - 5 shown, a chute 7 parallel to the welding joint 3 is provided at the top of the tabletop 1, and a slider 8 for connecting the seam closing assembly 6 and the welding machine 2 is slidably connected inside the chute 7.

[0060] Specifically, the chute 7 is a strip-shaped groove opened at the top of the tabletop 1, and their positions are parallel to the welding joint 3, ensuring that the welding machine 2 can move along a predetermined trajectory during welding operations. The design of the chute 7 not only defines the movement path of the welding machine 2 but also provides necessary support for the synchronous movement of the seam closing assembly 6.

[0061] The slider 8 is a component that can freely slide inside the chute 7. The size of the chute 7 needs to match that of the slider 8, and it plays a role in connecting the welding machine 2 and the seam closing assembly 6. The design of the slider 8 needs to consider its smooth movement inside the chute 7, and at the same time, it needs to have sufficient strength to withstand the weights of the welding machine 2 and the seam closing assembly 6 and the dynamic loads during operation.

[0062] The slider 8 is designed to be in close fit with the chute 7 and is usually made of metal materials to improve wear resistance and strength. One end of the slider 8 is connected to the welding machine 2, and the other end is connected to the seam closing assembly 6 to ensure that the two can move synchronously. The slider 8 includes designs such as rollers or sliding bearings to reduce friction and improve the smoothness of movement.

[0063] The welding machine 2 and the seam closing assembly 6 are connected together by the slider 8. When the welding machine 2 moves along the chute 7, the seam closing assembly 6 will also move accordingly. This synchronous movement ensures that during the welding process, the seam closing assembly 6 can continuously apply appropriate pressure to the thin-walled aluminum alloy air duct, thereby keeping the gap of the air duct in the best state, which is beneficial to improving the welding quality.

[0064] As Figure 5 shown, the seam closing assembly 6 mainly includes a moving part 601, a power part 602, a seam closing roller 603, and a connecting rod 604. Each part has its specific function and works together to complete the seam closing task of the thin-walled aluminum alloy air duct.

[0065] Furthermore, the moving part 601 is the base of the seam closing assembly 6, which is installed at the bottom of the tabletop 1, used to support the entire seam closing assembly 6 and ensure that it can move smoothly under the tabletop 1. The moving part 601 is made of strong metal materials to ensure sufficient strength and stability. It includes a pulley or rail system to facilitate movement along the chute 7.

[0066] The power component 602 is responsible for providing driving force, enabling the seam closing roller 603 to apply pressure to the thin-walled aluminum alloy air duct, and helping to close the gap of the air duct. The power component 602 can be a power source in the form of an electric push rod, a cylinder, or a hydraulic cylinder, etc., and the most suitable power form is selected according to actual requirements.

[0067] The seam closing roller 603 is the part that directly contacts the thin-walled aluminum alloy air duct. Its surface is smooth and is set as a conical structure to reduce friction with the air duct and can apply pressure evenly. The seam closing roller 603 needs to be customized according to the size and thickness of the thin-walled aluminum alloy air duct to ensure that it can fit the outer wall of the air duct and provide sufficient pressure to close the gap. Driven by the power component 602 and the welder 2, the gap of the air duct is gradually closed by rotating and moving.

[0068] The connecting rod 604 is used to connect the moving part 601 and the slider 8 to ensure that the seam closing assembly 6 can move synchronously with the welder 2. The connecting rod 604 needs to have sufficient strength and rigidity to prevent deformation or fracture during the moving process and is made of high-strength alloy material.

[0069] Workflow

[0070] Initial preparation: Put the thin-walled aluminum alloy air duct on the shaping rod 4 and adjust the locking part 5 to fix it.

[0071] Start the power component: Start the power component 602 to make the seam closing roller 603 start to rotate and gradually approach the gap of the air duct.

[0072] Synchronous movement: Through the connecting rod 604, the moving part 601 moves as the slider 8 moves, driving the seam closing assembly 6 to move forward synchronously along the direction of the chute 7.

[0073] Seam closing operation: The seam closing roller 603 continuously applies pressure to the air duct gap during the forward movement, helping to close the air duct gap and keep it in a tight state.

[0074] Welding process: While the welder 2 is moving, the welding torch welds the air duct gap through the welding interface 3.

[0075] Completion: When the welder 2 and the seam closing assembly 6 complete the full journey movement, the welding work of the thin-walled aluminum alloy air duct is completed.

[0076] Through such a design, the seam closing assembly 6 can effectively assist the welding work, ensure that the thin-walled aluminum alloy air duct always maintains a good closed state during the welding process, and thus improve the welding quality and efficiency.

[0077] In an embodiment, the moving part 601 includes:

[0078] The moving part 601 is a part of the seaming component 6, which includes slide rails 605 and sliding blocks 606 symmetrically arranged on both sides of the welding joint 3.

[0079] Among them, the slide rail 605 provides guidance and support for the sliding block 606, ensuring that the sliding block 606 can move smoothly along the direction of the welding joint 3. The slide rail 605 is a metal track installed at the bottom of the table 1, usually made of high-strength steel to ensure its firmness and durability. The design of the slide rail 605 should take into account the characteristics of easy maintenance and cleaning.

[0080] The sliding block 606 is installed on the slide rail 605 and can slide along the slide rail 605. It is fixedly connected to the connecting rod 604 to ensure that the seaming component 6 can move synchronously with the welding machine 2. In order to ensure the smooth sliding of the sliding block 606 on the slide rail 605, rolling bearings or sliding pads are added between the sliding block 606 and the slide rail 605 to reduce friction. The two groups of sliding blocks 606 are respectively fixedly connected to the connecting rod 604 to ensure that the movement of the seaming component 6 is consistent with that of the welding machine 2.

[0081] In one embodiment, the power part 602 includes: an electric push rod 607 and a mounting bracket 608, which are used to provide the driving force required for seaming.

[0082] The electric push rod 607 is used to push the mounting bracket 608 and the seaming roller 603 thereon to apply pressure to the thin-walled aluminum alloy air duct. The electric push rod 607 is installed on the sliding block 606 and can be driven by electricity. The extended or retracted distance can be adjusted as needed, so as to adjust the pressure of the seaming roller 603 on the air duct.

[0083] In addition, the electric push rod 607 can be equipped with a control system, such as a PLC (programmable logic controller), to achieve precise control and adjustment of the pressure.

[0084] The mounting bracket 608 is used to fix the seaming roller 603 and install it at the end of the electric push rod 607. The mounting bracket 608 needs to have sufficient strength to support the seaming roller 603 and be able to withstand the pressure exerted by the electric push rod 607. The seaming roller 603 is installed on the mounting bracket 608 through bearings or other rotating devices to ensure that it can rotate freely to reduce friction with the thin-walled aluminum alloy air duct.

[0085] Workflow

[0086] Assembly: Install the sliding block 606 on the slide rail 605 and connect it to the slider 8 through the connecting rod 604. Then install the electric push rod 607 on the sliding block 606 and install the seaming roller 603 on the mounting bracket 608 at the end of the electric push rod 607.

[0087] Positioning: Put the thin-walled aluminum alloy air duct on the shaping rod 4 and fix it with the locking part 5.

[0088] Start the electric push rod: Start the electric push rod 607 to move the seam roller 603 closer to the thin-walled aluminum alloy air duct and apply appropriate pressure to it.

[0089] Synchronous movement: As the welding machine 2 moves, the slider 8 drives the sliding block 606 to move along the slide rail 605 through the connecting rod 604, and then drives the seam assembly 6 to move.

[0090] Seaming operation: During the movement, the seam roller 603 continuously applies pressure to the air duct gap to help the air duct gap close and remain tight.

[0091] Welding: The welding machine 2 welds the air duct gap through the welding interface 3.

[0092] Completion: When the welding machine 2 completes the full movement, the welding work of the thin-walled aluminum alloy air duct is completed.

[0093] With this design, the moving part 601 and the power part 602 not only ensure the smooth movement of the seam assembly 6, but also can provide precise pressure control, thus improving the welding quality and production efficiency.

[0094] In another embodiment, in order to improve the stability of the mounting bracket 608, a guide rod 609 is connected between the mounting bracket 608 and the sliding block 606. As Figure 6 shown, a guide hole (not shown in the figure) is provided on the mounting bracket 608, and the guide rod 609 is movably inserted into the guide hole, which can limit the angle of the mounting bracket 608 and thus improve the stability.

[0095] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A semi-automatic welding workbench for thin-walled aluminum alloy air ducts, characterized in that, Including: A tabletop (1), on the top of which a welding machine (2) with a welding torch is installed through a trolley track; A welding joint (3), which is opened on the top of the tabletop (1) and is arranged parallel to the trolley track; A shaping roller (4), which is detachably installed at the bottom of the welding joint (3) through a locking member (5) and has a diameter smaller than that of the aluminum alloy thin-walled air duct; A seam closing assembly (6), which is arranged at the bottom of the tabletop (1) and moves synchronously with the welding machine (2), and is used to narrow the gap of the aluminum alloy thin-walled air duct sleeved outside the shaping roller (4); Wherein, the welding torch of the welding machine (2) is located in the welding joint (3), and can weld the gap of the aluminum alloy thin-walled air duct located in the welding joint (3).

2. The semi-automatic welding workbench for an aluminum alloy thin-walled air duct according to claim 1, wherein, The locking member (5) includes: Locking openings (501), which are opened at both ends of the welding joint (3); Locking rods (502), which are movably connected in the locking openings (501); Wherein, the lower end of the locking rod (502) is movably connected to the end of the shaping roller (4).

3. A semi-automatic welding workbench for thin-walled aluminum alloy air ducts according to claim 2, characterized in that, The locking rod (502) includes: A ball head screw (503), the ball head part of the ball head screw (503) is movably connected to the end of the shaping roller (4); A lifting eye nut (504), the lifting eye nut (504) is threadedly connected to the screw part of the ball head screw (503); Wherein, an opening (401) is opened at the end of the shaping roller (4), and a ball socket (402) matching the ball head part is opened on the inner side of the opening (401).

4. A semi-automatic welding working platform for an aluminum alloy thin-walled air duct according to claim 1, characterized in that, A limiting rod (403) for limiting the inclination angle of the shaping roller (4) is arranged at one end of the shaping roller (4).

5. A semi-automatic welding workbench for thin-walled aluminum alloy air ducts according to claim 1, characterized in that, A chute (7) parallel to the welding joint (3) is opened on the top of the tabletop (1), and a slider (8) for connecting the seam closing assembly (6) and the welding machine (2) is slidably connected inside the chute (7).

6. A semi-automatic welding workbench for an aluminum alloy thin-wall air duct according to claim 5, wherein The seam closing assembly (6) includes: A moving member (601), which is installed at the bottom of the tabletop (1); A power member (602), which is installed on the moving member (601); A seam closing roller (603), which is installed on the power member (602) and can be attached to the outer wall of the aluminum alloy thin-walled air duct under the drive of the power member (602); Wherein, a connecting rod (604) is connected between the moving member (601) and the slider (8).

7. A semi-automatic welding working platform for an aluminum alloy thin-walled air duct according to claim 6, characterized in that, The moving member (601) includes: Slide rails (605) symmetrically arranged on both sides of the welding joint (3); Sliding blocks (606) are slidably connected to the outside of the slide rails (605), and both groups of sliding blocks (606) are fixedly connected to the connecting rod (604).

8. A semi-automatic welding working platform for an aluminum alloy thin-walled air duct according to claim 7, characterized in that, The power member (602) includes: An electric push rod (607) installed on the sliding block (606); The end of the electric push rod (607) is connected with a mounting bracket (608), and the seam closing roller (603) is rotatably installed on the mounting bracket (608).

9. A semi-automatic welding workbench for thin-walled aluminum alloy air ducts according to claim 8, characterized in that, The seam closing roller (603) is arranged in a conical structure.

10. A semi-automatic welding workbench for thin-walled aluminum alloy air ducts according to claim 8, characterized in that, A guide rod (609) is connected between the mounting bracket (608) and the sliding block (606).

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