Welding fixture for thin-wall arc-shaped aluminum plate

Abstract

The invention relates to a welding fixture for a thin-wall arc-shaped aluminum plate, which is applied to the field of aluminum plate processing. The workbench is fixedly installed at the top of the machine box, a center groove is formed in the middle of the workbench, a welding assembly is arranged in the center groove, and lifting assemblies are arranged at the bottom of the welding assembly and in the machine box; the pre-pressing assembly is arranged on the working table, and the pre-pressing assembly is arranged on the working table; the number of the sliding rail frames is multiple, and the two sides of the top of the workbench are each provided with a plurality of mounting grooves. The arc-shaped thin-wall aluminum plate body is effectively positioned through the sliding rail frame, the clamping assembly and the limiting assembly, the deformation phenomenon of the arc-shaped thin-wall aluminum plate body caused by too large clamping force is avoided, and it is guaranteed that the thin-wall arc-shaped aluminum plate body is consistent with the original state before and after welding; and the pressurizing assembly is adopted, so that a positioning roller in the clamping assembly can be fully attached to the side wall of the arc-shaped thin-wall aluminum plate body in a pressurizing mode, and the sufficient and stable thin-wall arc-shaped aluminum plate welding clamp is formed.

Description

Technical Field

[0001] The present invention relates to a welding fixture, and more particularly to a welding fixture for thin-walled curved aluminum plates used in the field of aluminum plate processing. Background Technology

[0002] Welding is a processing method that joins parts together by heating or pressurizing. Depending on the welding process, welding methods can be divided into three main categories: pressure welding, fusion welding, and brazing, with arc welding being the most widely used fusion welding method. Welding is a common processing method in the fabrication of thin-walled aluminum sheets. Existing welding fixtures for thin-walled aluminum sheets are often effective for positioning straight aluminum sheets, but not for positioning curved thin-walled aluminum sheets, thus reducing their usability.

[0003] To address the poor positioning performance of thin-walled curved aluminum plates, a certain welding fixture for thin-walled curved aluminum plates on the market employs a multi-set positioning structure design for fixation, and has a certain market share. However, due to the easy deformation of thin-walled curved aluminum plates, regardless of whether a vertical or horizontal clamping and positioning structure is used, the clamped part will deform due to excessive clamping force. This results in the welded thin-walled curved aluminum plate being inconsistent with its original state, thereby reducing the overall performance of the welding fixture. Therefore, a welding fixture for thin-walled curved aluminum plates is proposed to improve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that due to the easy deformation of thin-walled arc-shaped aluminum plates, regardless of whether a clamping and positioning structure in the vertical direction or the horizontal direction is used, the clamped part will deform due to excessive clamping force, resulting in the welded thin-walled arc-shaped aluminum plate being inconsistent with the original state.

[0005] To address the above problems, the present invention provides a welding fixture for thin-walled curved aluminum plates, including a chassis;

[0006] The workbench is fixedly installed on the top of the chassis. A central groove is provided in the middle of the workbench, and a welding assembly is installed inside the central groove. A lifting assembly is provided between the bottom of the welding assembly and the inside of the chassis.

[0007] A pre-compression assembly is disposed on the worktable;

[0008] The slide rail frame is designed in multiple ways. Multiple mounting slots are opened on both sides of the top of the worktable, and the slide rail frame is fixedly installed inside the mounting slot.

[0009] The clamping assembly comprises multiple clamping assemblies, with adjacent clamping assemblies movably mounted on the same slide rail frame. Two opposing arc-shaped thin-walled aluminum plates are positioned between the clamping assemblies, with their joint located inside the welding assembly. Each clamping assembly includes a first bidirectional screw fixedly mounted between the inner walls of both ends of the slide rail frame. Movable sleeves are slidably mounted on both sides of the inner wall of the slide rail frame, with the bottom of the movable sleeves extending into the interior of the chassis. Threaded sleeves are screwed onto both sides of the outer wall of the first bidirectional screw, and the outer wall of the threaded sleeves is rotatably connected to the inner wall of the movable sleeves via bearings. Movable frames are fixed to the top of each movable sleeve, and movable plates are movably inserted into the inner wall of each movable frame. One end of each movable plate has an opening... The device has a first connecting groove, and a positioning roller is rotatably connected to the inner wall of the first connecting groove via a pin. The positioning roller is attached to the side wall of the arc-shaped thin-walled aluminum plate body. Multiple first springs are fixedly installed between the other end of the movable plate and the inner wall of one end of the movable frame. A sealing groove is opened on one side of the outer wall of the movable plate, and a piston sleeve is fixed to the inner wall of the sealing groove. The outer walls of the piston sleeve are tightly attached to the inner walls of the movable frame. A push handle is fixed to the top of the movable frame. This device can effectively position the arc-shaped thin-walled aluminum plate body, ensure the stability of the arc-shaped thin-walled aluminum plate body during welding, avoid deformation of the arc-shaped thin-walled aluminum plate body due to excessive clamping force, and ensure that the thin-walled arc-shaped aluminum plate body is consistent with its original state before and after welding.

[0010] A pressure-applying assembly is disposed between one end of the clamping assemblies;

[0011] The limiting component is located at the bottom of the clamping component and inside the chassis. The limiting component includes a second electric push rod fixedly installed at both ends of the bottom of the chassis, and the piston end of the second electric push rod is fixedly installed with the same limiting clamp. The top of the limiting clamp has anti-slip grooves distributed at equal intervals, and the limiting clamp fits against the bottom of the movable sleeve. This makes the limiting clamp tightly fit against the bottom of the movable sleeve on the clamping component, thereby fixing the movable sleeve and the clamping component.

[0012] As a further supplement to this application, the welding assembly includes a lifting plate, with a central hole in the middle of the lifting plate. A central shaft is rotatably connected to the inner wall of the central hole via a self-lubricating bearing. A mounting frame is fixedly installed at the bottom of the central shaft, and guide grooves are provided at both ends of the bottom of the mounting frame. L-shaped movable frames are movably mounted on the inner walls of the guide grooves. An extension assembly for adjusting the distance between the two L-shaped movable frames is provided inside the mounting frame. The extension assembly includes a second bidirectional screw rotatably connected to the top of the inner walls at both ends of the mounting frame. A threaded groove is provided on the top of one side of each of the two L-shaped movable frames. The inner wall of the threaded groove is screwed to the outer wall of the second bidirectional screw. A forward and reverse motor for driving the rotation of the second bidirectional screw is fixedly installed on the top of the outer wall at one end of the mounting frame. The bottom of the L-shaped movable frame... Each end of the fixture has a buffer groove, and a movable seat is movably inserted into the inner wall of each buffer groove. A second spring is fixed between one end of the movable seat and one end of the buffer groove. The other end of each movable seat has a second connecting groove, and a positioning wheel is rotatably connected to the inner wall of each second connecting groove via a pin. The positioning wheel is in contact with the side wall of the curved thin-walled aluminum plate body. An inclined welding torch is fixedly installed on one side of the bottom of each movable seat, and one end of the welding torch is close to the side wall of the curved thin-walled aluminum plate body. This allows the position of the welding torch of the entire welding fixture to be adapted to the joint of two curved thin-walled aluminum plates at different angles, thereby increasing the working range of the entire welding fixture and enabling welding operations at the joint of curved thin-walled aluminum plates at different angles, thus fully improving the working effect of the entire welding fixture.

[0013] As another improvement of this application, the pressurizing component includes a connecting pipe fixed at the middle position of one end of the movable frame, and a booster pump fixedly installed on one side of the bottom inner wall of the chassis. An air supply pipe extending out of the chassis is fixedly installed on the top of the booster pump. A valve is provided on the air supply pipe, and an air guide pipe is fixedly installed on the top of the air supply pipe. The air guide pipe is U-shaped, and multiple air distribution pipes are fixed on both sides of the air guide pipe. A pressurizing hose is fixedly installed between one end of the air distribution pipe and one end of the connecting pipe. Support columns are fixedly installed between the top two sides of the worktable and the bottom two sides of the air guide pipe. Under pressurization, the positioning rollers in the clamping component fully fit against the side wall of the arc-shaped thin-walled aluminum plate body, forming a sufficiently stable thin-walled arc-shaped aluminum plate welding fixture, thus achieving the performance of fully positioning the arc-shaped thin-walled aluminum plate body.

[0014] As another improvement of this application, the pre-compression assembly includes supports hinged to both ends of the outer wall of one side of the worktable, and the bottom of each support is fixed to the top of the worktable with an inclined third spring. A handle is fixed to one side of each support, and a pre-pressure plate is fixed to one end of each support. The bottom of each pre-pressure plate is rotatably connected to pre-pressure rollers distributed at equal intervals. The pre-pressure rollers are in contact with the top of the curved thin-walled aluminum plate body. A side-pressure assembly is provided at one end of each pre-pressure plate, and the side-pressure assembly includes a screw rotatably connected to one end of the pre-pressure plate. The threaded rod is screwed with a side pressure plate. A knob is fixed to one end of the threaded rod, and a guide rod is fixed to one end of the pre-pressure plate. A guide hole is opened on the side pressure plate for the guide rod to pass through. A protective pad is fixed to one side of the side pressure plate and is attached to the end of the arc-shaped thin-walled aluminum plate body. The top and end of the arc-shaped thin-walled aluminum plate body are pre-pressed to prevent the two arc-shaped thin-walled aluminum plate bodies from shifting during subsequent clamping and to prevent the welding joint of the two arc-shaped thin-walled aluminum plate bodies from shifting.

[0015] In summary, by adopting the above structure, the present invention has the following advantages compared with the prior art:

[0016] 1. Using the above-mentioned pre-pressing assembly, the pre-pressing plate and pre-pressing roller can be pressed onto the two opposing arc-shaped thin-walled aluminum plate bodies under the pressing action of the third spring. The height of the side pressure plate and protective pad can be adjusted by rotating the threaded rod with a knob, thereby pre-pressing the top and end of the arc-shaped thin-walled aluminum plate bodies respectively, avoiding the problem of displacement of the two arc-shaped thin-walled aluminum plate bodies during subsequent clamping, and preventing the welding joint of the two arc-shaped thin-walled aluminum plate bodies from shifting.

[0017] 2. Using the aforementioned worktable, slide rail frame, clamping assembly, and limiting assembly, two curved thin-walled aluminum plate bodies are placed together on the worktable, with their joint position located in the center area of ​​the welding assembly. The clamping assembly is moved along the slide rail frame by pushing the handle, causing the positioning rollers on the multiple clamping assemblies to respectively abut against both sides of the same curved thin-walled aluminum plate body. Under the self-locking action of the first bidirectional screw and the threaded sleeve, the moving sleeve and clamping assembly are initially positioned. At this time, the height of the limiting clamp is adjusted by the pushing action of the second electric push rod within the limiting assembly, thus limiting the position. The clamping platform is tightly attached to the bottom of the movable sleeve on the clamping assembly, thereby fixing the movable sleeve and the clamping assembly. This fixes the clamping assembly to the arc-shaped side wall of the arc-shaped thin-walled aluminum plate body, effectively positioning the arc-shaped thin-walled aluminum plate body and ensuring its stability during welding. This avoids deformation of the arc-shaped thin-walled aluminum plate body caused by excessive clamping force in existing clamping methods, ensuring that the thin-walled arc-shaped aluminum plate body remains consistent with its original state before and after welding. This improves the overall working efficiency of the welding fixture and enables positioning performance for arc-shaped thin-walled aluminum plates of different shapes.

[0018] 3. By using the above-mentioned pressurizing components, an airflow pressurization channel can be formed through the booster pump, air supply pipe, air guide pipe, air distribution pipe, pressurizing hose and connecting pipe in the pressurizing components to pressurize the clamping components. Under the pressurization, the positioning rollers in the clamping components are fully attached to the side wall of the arc-shaped thin-walled aluminum plate body, forming a fully stable thin-walled arc-shaped aluminum plate welding fixture. This achieves the performance of fully positioning the arc-shaped thin-walled aluminum plate body and can replace the existing arc-shaped thin-walled aluminum plate clamping and positioning structure.

[0019] 4. By employing the aforementioned lifting assembly, welding assembly, and extension assembly, the positioning wheel within the welding assembly can be adjusted by the extension assembly to fit against the side wall of the arc-shaped thin-walled aluminum plate body. Continuous adjustment allows the central shaft and mounting frame to rotate. Rotation stops when the positioning wheel aligns with the joint of the two arc-shaped thin-walled aluminum plates, thus aligning the positioning wheel and welding torch with the joint of the two arc-shaped thin-walled aluminum plates. This allows the welding torch position of the entire welding fixture to be adapted to the joint of the two arc-shaped thin-walled aluminum plates at different angles, increasing the working range of the entire welding fixture and enabling welding operations at the joints of arc-shaped thin-walled aluminum plates at different angles, thereby significantly improving the overall working efficiency of the welding fixture. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the pressurization component structure according to the second embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the clamping component structure according to the first embodiment of this application;

[0023] Figure 4 This is a diagram showing the initial position of the clamping assembly according to the first embodiment of this application.

[0024] Figure 5 This is a diagram showing the initial position of the limiting clamp in the first embodiment of this application.

[0025] Figure 6 This is a schematic diagram of the mounting slot structure according to the first embodiment of this application;

[0026] Figure 7 This is a cross-sectional view of the active frame of the first embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the lifting plate and welding torch structure according to the first embodiment of this application;

[0028] Figure 9This is a schematic diagram of the welding assembly structure according to the first embodiment of this application;

[0029] Figure 10 This is a diagram showing the initial position of the welding assembly according to the first embodiment of this application;

[0030] Figure 11 This is a schematic diagram of the second bidirectional screw and the second spring structure according to the first embodiment of this application;

[0031] Figure 12 This is a schematic diagram of the pre-compression component structure according to the first embodiment of this application;

[0032] Figure 13 This is a schematic diagram of the threaded rod and protective pad structure according to the first embodiment of this application.

[0033] Explanation of the labels in the diagram:

[0034] 1. Chassis; 2. Workbench; 3. Door; 4. Center slot; 5. Slide rail frame; 6. Clamping assembly; 601. First bidirectional screw; 602. Moving sleeve; 603. Movable frame; 604. Push handle; 605. Movable plate; 606. Positioning roller; 607. Threaded sleeve; 608. First connecting groove; 609. Piston sleeve; 610. First spring; 7. Pressurization assembly; 701. Booster pump; 702. Air supply pipe; 703. Air guide pipe; 704. Pressurization hose; 705. Connecting pipe; 8. Arc-shaped thin-walled aluminum plate body; 9. Welding assembly; 901. Lifting plate; 902. Center shaft; 903. Welding torch; 904. Mounting frame; 905. Guide groove; 906. L-shaped movable frame; 907. Movable seat; 908. Positioning wheel; 909. Forward and reverse motor; 910. Second bidirectional screw; 911. Buffer groove; 912. Second spring; 10. Box opening; 11. First electric push rod; 12. Second electric push rod; 13. Limiting clamp; 14. Mounting groove; 15. U-shaped lifting frame; 16. Pre-compression assembly; 1601. Support frame; 1602. Third spring; 1603. Handle lever; 1604. Pre-compression plate; 1605. Side pressure plate; 1606. Pre-compression roller; 1607. Threaded rod; 1608. Guide rod; 1609. Protective pad; 1610. Knob. Detailed Implementation

[0035] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0036] Implementation method 1:

[0037] This invention provides a welding fixture for thin-walled curved aluminum plates. Please refer to [link / reference]. Figures 1-13 Including chassis 1;

[0038] Workbench 2 is fixedly installed on the top of chassis 1. A central groove 4 is provided in the middle of the workbench 2. A welding assembly 9 is provided inside the central groove 4. A lifting assembly is provided at the bottom of the welding assembly 9 and inside the chassis 1.

[0039] Pre-compression assembly 16, wherein the pre-compression assembly 16 is disposed on the worktable 2;

[0040] The slide rail frame 5 is designed in multiple ways. Multiple mounting slots 14 are opened on both sides of the top of the worktable 2. The slide rail frame 5 is fixedly installed inside the mounting slot 14 respectively.

[0041] Clamping components 6 are designed in multiples, with adjacent clamping components 6 movably mounted on the same slide rail frame 5. Two opposing arc-shaped thin-walled aluminum plate bodies 8 are positioned between the clamping components 6, with the joint between the two arc-shaped thin-walled aluminum plate bodies 8 located inside the welding component 9. Each clamping component 6 includes a first bidirectional screw 601 fixedly installed between the inner walls of both ends of the slide rail frame 5. Movable sleeves 602 are slidably mounted on both sides of the inner wall of the slide rail frame 5, with the bottom of the movable sleeves 602 extending into the interior of the housing 1. Threaded sleeves 607 are screwed onto both sides of the outer wall of the first bidirectional screw 601, and the outer wall of the threaded sleeve 607 is rotatably connected to the inner wall of the movable sleeve 602 via bearings. The top of the movable sleeve 602... Each part is fixed with a movable frame 603, and a movable plate 605 is movably inserted into the inner wall of each movable frame 603. One end of each movable plate 605 has a first connecting groove 608. The inner wall of the first connecting groove 608 is rotatably connected to a positioning roller 606 via a pin. The positioning roller 606 is attached to the side wall of the arc-shaped thin-walled aluminum plate body 8. Multiple first springs 610 are fixedly installed between the other end of the movable plate 605 and the inner wall of one end of the movable frame 603. A sealing groove is opened on one side of the outer wall of each movable plate 605, and a piston sleeve 609 is fixed to the inner wall of the sealing groove. The outer walls of the piston sleeve 609 are tightly fitted to the inner walls of the movable frame 603. A push handle 604 is fixed to the top of each movable frame 603. Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, by pushing the handle 604, the clamping assembly 6 is moved on the slide rail frame 5, so that the positioning rollers 606 on the multiple clamping assemblies 6 respectively fit against both sides of the same arc-shaped thin-walled aluminum plate body 8. Under the thread self-locking action of the first bidirectional screw 601 and the threaded sleeve 607, the moving sleeve 602 and the clamping assembly 6 are initially positioned, so that the clamping assembly 6 is fixed at the arc-shaped side wall of the arc-shaped thin-walled aluminum plate body 8. This can effectively position the arc-shaped thin-walled aluminum plate body 8, ensure the stability of the arc-shaped thin-walled aluminum plate body 8 during welding, avoid the deformation phenomenon of the arc-shaped thin-walled aluminum plate body 8 caused by excessive clamping force of the existing clamping method, and ensure that the thin-walled arc-shaped aluminum plate body is consistent with the original state before and after welding.

[0042] Pressure assembly 7 is disposed between one end of clamping assembly 6;

[0043] A limiting component is disposed at the bottom of the clamping component 6 and inside the chassis 1. The limiting component includes a second electric push rod 12 fixedly installed at both ends of the bottom of the chassis 1, and the piston end of the second electric push rod 12 is fixedly installed with the same limiting clamp 13. The top of the limiting clamp 13 is provided with anti-slip grooves distributed at equal intervals, and the limiting clamp 13 fits against the bottom of the movable sleeve 602. Figure 2 and Figure 5 As shown, the height of the limiting clamp 13 is adjusted by the pushing action of the second electric push rod 12 inside the limiting component, so that the limiting clamp 13 is tightly attached to the bottom of the movable sleeve 602 on the clamping component 6, thereby fixing the movable sleeve 602 and the clamping component 6.

[0044] In this invention, the lifting assembly includes a first electric push rod 11 fixedly installed on both sides of the bottom inner wall of the chassis 1, and a U-shaped lifting frame 15 extending from the central groove 4 is fixedly installed on the piston end of the first electric push rod 11. The outer walls of both sides of the U-shaped lifting frame 15 are attached to the inner walls of both ends of the central groove 4, and the welding assembly 9 is fixedly installed on the top of the U-shaped lifting frame 15. Figure 2 , Figure 8 and Figure 9 As shown, the height of the U-shaped lifting frame 15 and the welding assembly 9 is adjusted by the pushing action of the first electric push rod 11 in the lifting assembly, and the height of the welding torch 903 is adjusted to facilitate vertical welding at the joint of the two arc-shaped thin-walled aluminum plate bodies 8.

[0045] In this invention, the welding assembly 9 includes a lifting plate 901 fixedly installed on the top of the U-shaped lifting frame 15. A central hole is provided in the middle of the lifting plate 901. A central shaft 902 is rotatably connected to the inner wall of the central hole via a self-lubricating bearing. A mounting frame 904 is fixedly installed at the bottom of the central shaft 902. Guide grooves 905 are provided at both ends of the bottom of the mounting frame 904. L-shaped movable frames 906 are movably arranged on the inner walls of the guide grooves 905. An extension assembly for adjusting the distance between the two L-shaped movable frames 906 is provided inside the mounting frame 904. The extension assembly includes a second bidirectional screw 910 rotatably connected to the top of the inner walls at both ends of the mounting frame 904. Threaded grooves are provided on the top of one side of each of the two L-shaped movable frames 906. The inner walls of the threaded grooves are connected to the second bidirectional screw 906. The outer walls of the 10 are screwed together. A forward / reverse motor 909 for driving the rotation of the second bidirectional screw 910 is fixedly installed on the top of the outer wall of one end of the mounting frame 904. A buffer groove 911 is provided at one bottom end of each L-shaped movable frame 906, and a movable seat 907 is movably inserted into the inner wall of each buffer groove 911. A second spring 912 is fixed between one end of the movable seat 907 and one end of the buffer groove 911. A second connecting groove is provided at the other end of each movable seat 907, and a positioning wheel 908 is rotatably connected to the inner wall of each second connecting groove via a pin. The positioning wheel 908 is attached to the side wall of the arc-shaped thin-walled aluminum plate body 8. An inclined welding torch 903 is fixedly installed on one side of the bottom of each movable seat 907, and one end of the welding torch 903 is close to the side wall of the arc-shaped thin-walled aluminum plate body 8. Figure 1 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the forward and reverse motor 909 in the extension assembly drives the second bidirectional screw 910 to rotate, shortening the distance between the two L-shaped movable frames 906. This allows the positioning wheel 908 in the welding assembly 9 to fit against the side wall of the arc-shaped thin-walled aluminum plate body 8. After continuous adjustment, the central shaft 902 and the mounting frame 904 can rotate. The rotation stops when the positioning wheel 908 coincides with the joint of the two arc-shaped thin-walled aluminum plate bodies 8. This allows the positioning wheel 908 and the welding torch 903 to correspond with the joint of the two arc-shaped thin-walled aluminum plate bodies 8, enabling the welding torch 903 of the entire welding fixture to be adapted to the joint of the two arc-shaped thin-walled aluminum plate bodies 8 at different angles. This increases the working range of the entire welding fixture, enabling welding operations at the joint of the arc-shaped thin-walled aluminum plate bodies 8 at different angles, and significantly improving the working effect of the entire welding fixture.

[0046] In this invention, the pre-pressing assembly 16 includes support frames 1601 hinged to both ends of the outer wall of one side of the workbench 2. The bottom of each support frame 1601 is fixed to the top of the workbench 2 with an inclined third spring 1602. A handle 1603 is fixed to one side of each support frame 1601, and a pre-pressing plate 1604 is fixed to one end of each support frame 1601. The bottom of each pre-pressing plate 1604 is rotatably connected to pre-pressing rollers 1606 distributed at equal intervals. The pre-pressing rollers 1606 are attached to the top of the arc-shaped thin-walled aluminum plate body 8. The two pre-pressing plates 1604... Each of the 604 plates has a side-pressure assembly at one end. The side-pressure assembly includes a threaded rod 1607 rotatably connected to one end of the pre-pressure plate 1604, and a side-pressure plate 1605 is screwed onto the threaded rod 1607. A knob 1610 is fixed to one end of the threaded rod 1607. A guide rod 1608 is fixed to one end of the pre-pressure plate 1604, and a guide hole is provided on the side-pressure plate 1605 for the guide rod 1608 to pass through. A protective pad 1609 is fixed to one side of the side-pressure plate 1605, and the protective pad 1609 is attached to the end of the arc-shaped thin-walled aluminum plate body 8. Figure 12 and Figure 13 As shown, by using the pre-pressing assembly 16 described above, the pre-pressing plate 1604 and the pre-pressing roller 1606 can be pressed onto the two opposing arc-shaped thin-walled aluminum plate bodies 8 under the pressing action of the third spring 1602. The knob 1610 drives the threaded rod 1607 to rotate, adjusting the height of the side pressure plate 1605 and the protective pad 1609, thereby pre-pressing the top and end of the arc-shaped thin-walled aluminum plate bodies 8 respectively, avoiding the problem of displacement of the two arc-shaped thin-walled aluminum plate bodies 8 during subsequent clamping, and preventing the welding joint of the two arc-shaped thin-walled aluminum plate bodies 8 from shifting.

[0047] In this invention, the interior of the casing 1 is equipped with welding equipment and control equipment. The welding equipment is electrically connected to the welding torch 903, and the control equipment is electrically connected to the booster pump 701, valves, welding equipment, forward and reverse motor 909, first electric push rod 11, and second electric push rod 12. Both sides of the casing 1 have openings 10, and both sides of the inner wall of the openings 10 are hinged with doors 3. Universal wheels are fixedly installed at the four corners of the bottom of the casing 1. Figure 1 and Figure 2 As shown, it can operate by controlling the welding fixture of the equipment and can open the door 3 to perform maintenance operations on the equipment inside the chassis 1.

[0048] In summary: The user places two curved thin-walled aluminum plate bodies 8 together on the workbench 2, positioning their joint at the center of the welding assembly 9. The user then uses the push handle 604 within the clamping assembly 6 to move the clamping assembly 6 on the slide rail frame 5, causing the threaded sleeve 607 to rotate on the first bidirectional screw 601. This allows the positioning rollers 606 on the multiple clamping assemblies 6 to respectively adhere to both sides of the same curved thin-walled aluminum plate body 8. Under the self-locking action of the threads of the first bidirectional screw 601 and the threaded sleeve 607, the moving sleeve 602 and the clamping assembly 6 are initially positioned. The height of the limiting clamping platform 13 is adjusted by the pushing action of the second electric push rod 12 within the limiting assembly, ensuring that the limiting clamping platform 13 is tightly against the bottom of the moving sleeve 602 on the clamping assembly 6, thereby fixing the moving sleeve 602 and the clamping assembly 6. This fixes the clamping assembly 6 to the curved sidewall of the curved thin-walled aluminum plate body 8, effectively positioning the curved thin-walled aluminum plate body 8. Finally, the user uses the forward and reverse motor 909 within the extension assembly to drive... The second bidirectional screw 910 rotates, shortening the distance between the two L-shaped movable frames 906. This causes the positioning wheel 908 inside the welding assembly 9 to fit against the side wall of the arc-shaped thin-walled aluminum plate body 8. After continuous adjustment, the central shaft 902 and the mounting frame 904 can rotate. The rotation stops when the positioning wheel 908 coincides with the joint of the two arc-shaped thin-walled aluminum plate bodies 8. This allows the positioning wheel 908 and the welding torch 903 to align with the joint of the two arc-shaped thin-walled aluminum plate bodies 8, thus aligning the entire welding fixture. The welding torch 903 is positioned to fit the joint of two curved thin-walled aluminum plate bodies 8 at different angles. Then, the height of the U-shaped lifting frame 15 and the welding assembly 9 is adjusted by the pushing action of the first electric push rod 11 in the lifting assembly, and the height of the welding torch 903 is adjusted to facilitate vertical welding of the joint of the two curved thin-walled aluminum plate bodies 8. Finally, the lifting assembly, welding assembly 9, extension assembly, limiting assembly and clamping assembly 6 are returned to their original positions, and the welded thin-walled curved aluminum plate can be taken out.

[0049] The second implementation method:

[0050] Based on Embodiment 1, this embodiment adds the following structure to enable the present application to fully position the arc-shaped thin-walled aluminum plate body 8. The specific settings are as follows: Figure 1 , Figure 2 , Figure 5 and Figure 7As shown, the pressurization assembly 7 includes a connecting pipe 705 fixed at the middle of one end of the movable frame 603, and a booster pump 701 fixedly installed on one side of the bottom inner wall of the chassis 1. An air supply pipe 702 extending out of the chassis 1 is fixedly installed on the top of the booster pump 701. A valve is provided on the air supply pipe 702, and a guide pipe 703 is fixedly installed on the top of the air supply pipe 702. The guide pipe 703 is U-shaped, and multiple branch pipes are fixed on both sides of the guide pipe 703. A pressurization hose 704 is fixedly installed between one end of each branch pipe and one end of the connecting pipe 705. Support columns are fixedly installed on both sides of the top of the worktable 2 and the bottom sides of the air guide pipe 703. The air pressure channel is formed by the booster pump 701, air supply pipe 702, air guide pipe 703, air distribution pipe, pressurization hose 704 and connecting pipe 705 in the pressurization assembly 7 to pressurize the clamping assembly 6. Under the pressure, the positioning roller 606 in the clamping assembly 6 fully fits against the side wall of the arc-shaped thin-walled aluminum plate body 8, forming a fully stable thin-walled arc-shaped aluminum plate welding fixture, and realizing the performance of fully positioning the arc-shaped thin-walled aluminum plate body 8.

[0051] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A welding fixture for thin-walled arc-shaped aluminum plates, characterized in that: Including the chassis (1); Workbench (2), the workbench (2) is fixedly installed on the top of the chassis (1), a central groove (4) is provided in the middle of the workbench (2), a welding assembly (9) is provided inside the central groove (4), and a lifting assembly is provided at the bottom of the welding assembly (9) and inside the chassis (1). A pre-tightening assembly (16) is disposed on the worktable (2); The slide rail frame (5) is designed in multiple ways. Multiple mounting slots (14) are provided on both sides of the top of the workbench (2). The slide rail frame (5) is fixedly installed inside the mounting slot (14). Clamping assembly (6), wherein multiple clamping assemblies (6) are designed, and two adjacent clamping assemblies (6) are movably mounted on the same slide rail frame (5). Two opposing arc-shaped thin-walled aluminum plate bodies (8) are provided between the clamping assemblies (6). The joint of the two arc-shaped thin-walled aluminum plate bodies (8) is located inside the welding assembly (9). The clamping assembly (6) includes a first bidirectional screw (601) fixedly installed between the inner walls of both ends of the slide rail frame (5). Movable sleeves (602) are slidably provided on both sides of the inner wall of the slide rail frame (5). The bottom of the movable sleeves (602) extends into the interior of the chassis (1). The outer side of the first bidirectional screw (601) Both sides of the wall are screwed with threaded sleeves (607), and the outer wall of the threaded sleeve (607) is rotatably connected to the inner wall of the movable sleeve (602) through bearings. The top of the movable sleeve (602) is fixed with a movable frame (603), and the inner wall of the movable frame (603) is movably inserted with a movable plate (605). One end of the movable plate (605) is provided with a first connecting groove (608). The inner wall of the first connecting groove (608) is rotatably connected with a positioning roller (606) through a pin. The positioning roller (606) is attached to the side wall of the arc-shaped thin-walled aluminum plate body (8). The other end of the movable plate (605) is fixedly installed between the inner wall of one end of the movable frame (603) and a plurality of first springs (610). A pressure assembly (7) is disposed between one end of the clamping assembly (6); A limiting component is disposed at the bottom of the clamping component (6) and inside the chassis (1).

2. The welding fixture for thin-walled arc-shaped aluminum plates according to claim 1, characterized in that: The pressurization assembly (7) includes a connecting pipe (705) fixed at the middle position of one end of the movable frame (603), and a booster pump (701) is fixedly installed on one side of the bottom inner wall of the chassis (1). An air supply pipe (702) extending out of the chassis (1) is fixedly installed on the top of the booster pump (701). A valve is provided on the air supply pipe (702). An air guide pipe (703) is fixedly installed on the top of the air supply pipe (702). The air guide pipe (703) is U-shaped. Multiple air distribution pipes are fixed on both sides of the air guide pipe (703). A pressurization hose (704) is fixedly installed between one end of the air distribution pipe and one end of the connecting pipe (705). Support columns are fixedly installed between the top two sides of the workbench (2) and the bottom two sides of the air guide pipe (703).

3. The welding fixture for thin-walled arc-shaped aluminum plates according to claim 2, characterized in that: The welding assembly (9) includes a lifting plate (901), and a central hole is provided in the middle of the lifting plate (901). A central shaft (902) is rotatably connected to the inner wall of the central hole through a self-lubricating bearing. A mounting frame (904) is fixedly installed at the bottom of the central shaft (902), and guide grooves (905) are provided at both ends of the bottom of the mounting frame (904). An L-shaped movable frame (906) is movably provided on the inner wall of the guide groove (905). An extension assembly for adjusting the distance between the two L-shaped movable frames (906) is provided inside the mounting frame (904). A buffer groove is provided at one end of the bottom of each L-shaped movable frame (906). (911), and the inner wall of the buffer groove (911) is movably connected with a movable seat (907). A second spring (912) is fixed between one end of the movable seat (907) and one end of the buffer groove (911). The other end of the movable seat (907) is provided with a second connecting groove. The inner wall of the second connecting groove is rotatably connected with a positioning wheel (908) through a pin. The positioning wheel (908) is attached to the side wall of the arc-shaped thin-walled aluminum plate body (8). An inclined welding gun (903) is fixedly installed on one side of the bottom of the movable seat (907). One end of the welding gun (903) is close to the side wall of the arc-shaped thin-walled aluminum plate body (8).

4. The welding fixture for thin-walled arc-shaped aluminum plates according to claim 1, characterized in that: The pre-compression assembly (16) includes a support frame (1601) hinged to both ends of the outer wall of one side of the workbench (2), and the bottom of each support frame (1601) is fixed with an inclined third spring (1602) to the top of the workbench (2). A handle (1603) is fixed to one side of each of the two support frames (1601), and a pre-compression plate (1604) is fixed to one end of each of the two support frames (1601). A side pressure assembly is provided at one end of each of the two pre-compression plates (1604).

5. A welding fixture for thin-walled arc-shaped aluminum plates according to claim 4, characterized in that: The bottom of each pre-press plate (1604) is rotatably connected with pre-press rollers (1606) distributed at equal intervals, and the pre-press rollers (1606) are attached to the top of the arc-shaped thin-walled aluminum plate body (8).

6. The welding fixture for thin-walled arc-shaped aluminum plates according to claim 5, characterized in that: The side pressure assembly includes a threaded rod (1607) rotatably connected to one end of the pre-pressure plate (1604), and a side pressure plate (1605) is screwed onto the threaded rod (1607). A knob (1610) is fixed to one end of the threaded rod (1607).

7. A welding fixture for thin-walled arc-shaped aluminum plates according to claim 6, characterized in that: One end of the pre-pressing plate (1604) is fixed with a guide rod (1608), and a guide hole is provided on the side pressure plate (1605) for the guide rod (1608) to pass through.

8. A welding fixture for thin-walled arc-shaped aluminum plates according to claim 7, characterized in that: A protective pad (1609) is fixed on one side of the side pressure plate (1605), and the protective pad (1609) is attached to the end of the arc-shaped thin-walled aluminum plate body (8).

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