Special flattening device for aluminum alloy wing tube and method thereof

Abstract

The application discloses a special flattening device and method for an aluminum alloy wing pipe, relates to the technical field of aluminum alloy production, and comprises a wing pipe feeding mechanism and a material receiving table. The material receiving table is provided with an inlet section. The material receiving table is sequentially provided with a fixed cutting saw mechanism, a conical unfolding mechanism and a high-opening-degree straightening mechanism along the running direction of the wing pipe. The material receiving table is further provided with an outlet section arranged correspondingly to the high-opening-degree straightening mechanism. A pressure roller gantry is arranged between the conical unfolding mechanism and the high-opening-degree straightening mechanism. A traction power mechanism is arranged on the outlet section and located outside the high-opening-degree straightening mechanism. In use, the wing pipe feeding mechanism, the fixed cutting saw mechanism, the conical unfolding mechanism, the pressure roller gantry, the high-opening-degree straightening mechanism and the traction power mechanism are linearly and integrally arranged in series, thereby replacing the traditional manual flattening operation and realizing continuous automatic flow line processing of aluminum alloy wing pipe feeding, joint cutting, pipe expanding, pre-pressing, flattening and discharging.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy production technology, specifically to a special flattening device and method for aluminum alloy wing tubes. Background Technology

[0002] Aluminum alloy wing tubes are semi-finished profiles used in the aerospace and rail transportation industries to produce wide-width, ribbed, integral wall panels.

[0003] The industry typically first extrudes closed cylindrical ribbed aluminum alloy wing tubes, and then obtains finished sheet metal through unfolding and leveling processes. The wing tube has an integrated reinforcing rib structure inside, balancing lightweight and structural strength. After the tubular blank is cut open, stretched, and completely flattened, it can be used as a ribbed sheet metal for subsequent precision processing. It is a key intermediate raw material for large lightweight load-bearing components. The wing tube flattening operation is entirely done manually with simple tooling. The only supporting tools are scattered components such as pry bars, support pads, manual pressure blocks, and simple limit brackets.

[0004] Since the diameter of the aluminum alloy wing tubes to be processed can reach 500-600mm and the tubes are quite heavy, in manual operation mode, a single person can only process one wing tube at a time. The next tube can only be processed after the single tube is flattened. Batch continuous operation is not possible. Moreover, when manually opening the wing tubes and aligning the plate surface, the entire process relies on the external force of simple tools such as pry bars and pressure plates. The point of force application, the magnitude of force application, and the direction of force application are all controlled by the worker's experience, resulting in severe uneven stress on the entire tube. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a special flattening device and method for aluminum alloy wing tubes. The problem to be solved is that when processing large-sized aluminum alloy wing tubes with large self-weight, manual processing can only process one tube at a time, and continuous batch production is not possible. At the same time, manual flattening and correction with simple tools does not have a uniform standard for force application, resulting in uneven stress on the tube and easy to cause deformation defects in the profile.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a special flattening device for aluminum alloy wing tubes, comprising a wing tube feeding mechanism and a material receiving platform, wherein the material receiving platform is provided with a feeding section corresponding to the wing tube feeding mechanism, and a fixed cutting saw mechanism, a conical unfolding mechanism and a high opening degree straightening mechanism are sequentially arranged on the material receiving platform along the traveling direction of the wing tube. The material receiving platform is also provided with a discharge section corresponding to the high opening degree straightening mechanism. The fixed cutting saw mechanism is located between the feeding section and the conical unfolding mechanism. A pressure roller gantry is also provided between the conical unfolding mechanism and the high opening degree straightening mechanism. A traction power mechanism is provided on the discharge section and outside the high opening degree straightening mechanism. An output roller conveyor is provided on the material receiving platform corresponding to the traction power mechanism.

[0008] As a preferred embodiment of the special flattening device for aluminum alloy wing tubes described in this invention, the feeding wing tube feeding mechanism includes a feeding push rod fixedly installed below the material receiving platform. The piston rod of the feeding push rod is drivenly connected to a feeding slide. The feeding slide is slidably arranged on the feeding section through the feeding push rod. The feeding slide is used to push the wing tube along the axial direction of the wing tube. The feeding section and the discharge section are respectively arranged along the traveling direction of the wing tube.

[0009] As a preferred embodiment of the special flattening device for aluminum alloy wing tubes described in this invention, a V-shaped bearing plate is fixedly provided on the side of the feeding slide near the fixed cutting saw mechanism, and a V-shaped cavity adapted to the outer wall of the wing tube is formed between the V-shaped bearing plates.

[0010] As a preferred embodiment of the special flattening device for aluminum alloy wing tubes described in this invention, the fixed cutting saw mechanism includes a fixed circular saw arranged along the centerline of the material receiving platform, wherein the fixed circular saw in the fixed cutting saw mechanism is used to cut openings along the axial direction of the wing tube.

[0011] As a preferred embodiment of the special flattening device for aluminum alloy wing tubes described in this invention, the conical unfolding mechanism includes cutting guide positioning wheels, which are symmetrically distributed on both sides of the fixed circular saw in the fixed cutting saw mechanism, and the cutting guide positioning wheels are linearly arranged along the wing tube's travel direction.

[0012] As a preferred embodiment of the special flattening device for aluminum alloy wing tubes described in this invention, the conical unfolding mechanism further includes an internal guide fixture. The tip of the conical head of the internal guide fixture is close to the discharge side of the fixed circular saw in the fixed cutting saw mechanism. The internal guide fixture is also provided with aluminum plate unfolding external guide wheels that fit against both sides of the outer wall of the wing tube. The aluminum plate unfolding external guide wheels are arranged linearly along the radial unfolding direction of the wing tube.

[0013] As a preferred embodiment of the special flattening device for aluminum alloy wing tubes described in this invention, a traction power mechanism is provided at the discharge section and outside the high-opening-degree straightening mechanism, and the traction power mechanism is arranged correspondingly to the output roller conveyor. The high-aperture straightening mechanism includes an upper straightening roller module and a lower straightening roller module that are staggered vertically. The upper straightening roller module consists of five upper straightening rollers, and a high-aperture straightening channel is formed between the upper straightening roller module and the lower straightening roller module. The upper straightening roller module consists of five upper straightening rollers with a convex center, and the upper straightening rollers are arranged in descending power order. The lower straightening roller module consists of four lower straightening rollers with roller rings, and the roller rings of the lower straightening rollers are adapted to the rib spacing of the wing tube.

[0014] As a preferred embodiment of the special flattening device for aluminum alloy wing tubes described in this invention, the material support platform is further provided with an electrical control system and a hydraulic system for driving the fixed cutting saw mechanism, the conical unfolding mechanism, the pressure roller gantry, the high opening degree straightening mechanism, and the traction power mechanism.

[0015] A method for using a special flattening device for aluminum alloy wing tubes includes the following steps: Step 1: When the device is needed, first place the aluminum alloy wing tube on the V-shaped support plate 1111 of the loading slide 111, and start the loading push rod 11 to push the wing tube forward. Step 2: The fixed cutting saw mechanism 3 then opens an axial slit at the top of the wing tube, and after being limited by the cutting guide positioning wheel 41, it is sent into the conical unfolding mechanism 4. Step 3: The slotted wing tube, together with the internal guide fixture 42 and the aluminum plate, is unfolded and the external guide roller 421 is used to open it to form a fan-shaped blank. The blank enters the pressure roller gantry 5 to complete the pre-pressing. Step 4: The pre-pressed fan-shaped billet is fed into a high-opening straightening mechanism with 6 rollers for leveling, eliminating warping of the board surface and protecting the ribs; Step 5: The leveled sheet is pulled by the traction power mechanism 7, sent out through the output roller conveyor 8, and then transported away by the subsequent connected conveyor frame.

[0016] In summary, the present invention has at least one of the following beneficial effects: 1. This invention replaces the traditional purely manual flattening operation by linearly connecting and integrating the feeding wing tube input mechanism, fixed cutting saw mechanism, conical unfolding mechanism, pressure roller gantry, high opening degree straightening mechanism, and traction power mechanism, thereby realizing continuous automated production line processing of aluminum alloy wing tubes for feeding, cutting, expanding, pre-pressing, straightening, and unloading.

[0017] 2. In this invention, the tube is opened by an internal guide fixture in conjunction with an aluminum plate and an external guide wheel. Then, the tube is leveled by rolling with an upper straightening roller with a convexity and a lower straightening roller with a matching rib roller ring. This can evenly release the internal stress of the tube and effectively avoid defects such as rib twisting and plate surface concavity and springback caused by manual operation during the flattening process of the wing tube. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a structural diagram showing the assembly of the feeding wing tube input mechanism and the conical unfolding mechanism of the present invention. Figure 3 This is a schematic diagram illustrating the aluminum tube flattening principle of the present invention; Figure 4 This is a structural diagram showing the assembly of the conical unfolding mechanism and the high-aperture straightening mechanism of the present invention. Figure 5 This is a structural diagram showing the installation of the high-opening-degree straightening mechanism and the traction power mechanism of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Feeding wing tube input mechanism; 11. Feeding push rod; 111. Feeding slide; 1111. V-shaped bearing plate; 2. Material receiving platform; 21. Feeding section; 22. Discharge section; 3. Fixed cutting saw mechanism; 4. Conical unfolding mechanism; 41. Cutting guide positioning wheel; 42. Internal guide fixture; 421. Aluminum plate unfolding external guide wheel; 5. Pressure roller gantry frame; 6. High opening degree straightening mechanism; 61. Upper straightening roller module; 62. Lower straightening roller module; 7. Traction power mechanism; 8. Output roller conveyor. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] This invention discloses a special flattening device and method for aluminum alloy airfoils.

[0023] Example, refer to Figure 1-5This invention provides a special flattening device and method for aluminum alloy wing tubes. The device includes a wing tube feeding mechanism 1 and a receiving platform 2. The receiving platform 2 has a feeding section 21 corresponding to the feeding mechanism 1. Along the traveling direction of the wing tube, a fixed cutting saw mechanism 3, a conical unfolding mechanism 4, and a high-aperture straightening mechanism 6 are sequentially arranged on the receiving platform 2. The receiving platform 2 also has a discharge section 22 corresponding to the high-aperture straightening mechanism 6. The fixed cutting saw mechanism 3 is located between the feeding section 21 and the conical unfolding mechanism 4. A pressure roller gantry 5 is also provided between the conical unfolding mechanism 4 and the high-aperture straightening mechanism 6. The discharge section 22 is located between the high-aperture straightening mechanism 6. The outer side is equipped with a traction power mechanism 7, and the material receiving platform 2 is equipped with an output roller conveyor 8 arranged corresponding to the traction power mechanism 7. The whole device adopts a linear series layout. All processing stations are integrated into one unit based on the material receiving platform 2, eliminating the need for multiple devices to transfer workpieces. The feeding section 21 and the discharging section 22 divide the material receiving platform 2 into functional zones to match the complete processing flow of the wing tube from front to back. The fixed cutting saw mechanism 3, the conical unfolding mechanism 4, and the high opening degree straightening mechanism 6 are arranged in the order of cutting, expanding, pre-pressing, straightening, and traction discharge, respectively. Relying on the traction power mechanism 7 to provide unified conveying power, the continuous automated processing of aluminum alloy wing tubes is realized, replacing the traditional manual segmented operation. The output roller conveyor 8 can be connected to the conveyor frame to transport the unfolded aluminum plate.

[0024] The feeding wing tube feeding mechanism 1 includes a feeding push rod 11 fixedly installed below the receiving platform 2. The piston rod of the feeding push rod 11 is connected to a feeding slide 111. The feeding slide 111 is slidably arranged on the feeding section 21 through the feeding push rod 11. The feeding slide 111 is used to push the wing tube along the axial direction of the wing tube. The feeding section 21 and the discharge section 22 are respectively arranged along the traveling direction of the wing tube. The feeding push rod 11 is a hydraulic push rod. It can save the upper operating space by being installed at the bottom of the receiving platform 2. After the wing tube is placed on the slide, it is continuously pushed at a uniform speed by the push rod to ensure the straightness of the tube feeding and complete the transfer from the feeding section 21 to the discharge section 22.

[0025] A V-shaped bearing plate 1111 is fixedly provided on one side of the feeding slide 111 near the fixed cutting saw mechanism 3. The V-shaped bearing plates 1111 form a V-shaped cavity that fits the outer wall of the wing tube. The enclosed V-shaped cavity can automatically center cylindrical wing tubes of different outer diameters, restricting the radial rolling of the tube. While ensuring stable transportation, it does not interfere with normal cutting along the centerline of the tube.

[0026] The fixed cutting saw mechanism 3 includes a fixed circular saw arranged along the center line of the support platform 2. The fixed circular saw in the fixed cutting saw mechanism 3 is used to cut an opening along the axial direction of the wing tube. The lifting height of the circular saw is fixed, and it only makes an axial through slit in the top wall of the wing tube without cutting the entire tube. The circular saw breaks a 7mm gap in the upper part of the wing tube.

[0027] The conical unfolding mechanism 4 includes cutting guide positioning wheels 41, which are symmetrically distributed on both sides of the fixed circular saw in the fixed cutting saw mechanism 3. The cutting guide positioning wheels 41 are linearly arranged along the traveling direction of the wing tube. The cutting guide positioning wheels 41 clamp the outer wall of the wing tube and constrain the lateral displacement of the tube after sawing. Multiple sets of guide wheels are arranged in front and behind to limit the tube in sections and ensure that the wing tube with seams is smoothly fed into the rear expansion station.

[0028] The conical unfolding mechanism 4 also includes an internal guide fixture 42. The tip of the conical head of the internal guide fixture 42 is close to the discharge side of the fixed circular saw in the fixed cutting saw mechanism 3. The internal guide fixture 42 is also provided with aluminum plate unfolding external guide wheels 421 that fit against the two sides of the outer wall of the wing tube. The aluminum plate unfolding external guide wheels 421 are arranged linearly along the radial unfolding direction of the wing tube. The conical head has a gradually changing structure from narrow to wide, which gradually expands the tubular wing tube from the saw kerf and slowly releases the tube's closing stress. Multiple sets of aluminum plate unfolding external guide wheels 421 simultaneously fit against the two sides of the tube wall to counteract the outward rebound tendency of the tube during the unfolding process, and initially expands the circular tube into a fan-shaped semi-finished product. The wing tube that has been sawn open is gradually opened by the conical unfolding device to form a fan-shaped end face of about 120°-150°.

[0029] A traction power mechanism 7 is located at the discharge section 22, outside the high-opening-degree straightening mechanism 6. The traction power mechanism 7 is arranged correspondingly to the output roller conveyor 8. The high-opening-degree straightening mechanism 6 includes an upper straightening roller module 61 and a lower straightening roller module 62, which are staggered vertically. The upper straightening roller module 61 consists of five upper straightening rollers. A high-opening straightening channel is formed between the upper straightening roller module 61 and the lower straightening roller module 62. The upper straightening roller module 61 consists of five upper straightening rollers with a convex center, and the upper straightening rollers are arranged in descending power order. The lower straightening roller module... 62 consists of four lower straightening rollers with roller rings. The upper roller ring of the lower straightening roller is adapted to the rib spacing of the wing tube. The high-opening straightening channel is adapted to the fan-shaped aluminum billet after it is opened. The convexity of the upper straightening roller in the upper straightening roller module 61 matches the tensile deformation requirements of the middle part of the plate. The descending power arrangement of the roller system eliminates the warping of the plate surface step by step. The lower straightening roller in the lower straightening roller module 62 is equipped with a special roller ring to engage the internal ribs of the wing tube. During the rolling process, the ribs are protected from twisting and bending. The traction power mechanism 7 clamps and pulls the flattened plate at a uniform speed. The output roller table 8 receives the plate and smoothly feeds it out.

[0030] The material receiving platform 2 is also equipped with an electrical control system and a hydraulic system for driving the fixed cutting saw mechanism 3, the conical unfolding mechanism 4, the pressure roller gantry 5, the high opening degree straightening mechanism 6, and the traction power mechanism 7. The hydraulic system provides pressure power for adjusting the push rods, pressure rollers, and straightening rollers at each station. The pressure at each station can be adjusted independently. The electrical control system is equipped with a PLC control unit to uniformly manage the machine's feed speed, sawing start and stop, and straightening pressure, realizing fully automated linkage control, which is the existing conventional electrical control technology solution.

[0031] When using this device for special flattening of aluminum alloy wing tubes, the aluminum alloy wing tube to be processed is first placed inside the V-shaped cavity formed by the V-shaped bearing plate 1111 of the loading slide 111 in the loading wing tube feeding mechanism 1. The V-shaped bearing plate 1111 automatically centers the wing tube and restricts radial rolling. The loading push rod 11 is started, and the loading push rod 11 drives the loading slide 111 to slide smoothly along the feeding section 21 of the material receiving platform 2, and pushes the wing tube forward at a uniform speed along the axial direction, without the need for manual handling and transfer. The wing tube first enters the fixed cutting saw mechanism 3. The fixed circular saw arranged along the center line of the receiving platform 2 cuts a 7mm axial through gap in the top wall of the wing tube, breaking only the wall without cutting the main body of the tube. The wing tube with the gap continues to feed. The cutting guide positioning wheels 41 arranged symmetrically and linearly on both sides clamp the outer wall of the wing tube, constraining the lateral displacement of the tube, and smoothly guiding the wing tube into the conical unfolding mechanism 4. The wing tube cut is aligned with the conical tip of the internal guide fixture 42 and fed continuously. The gradually widening conical head gradually opens the tube kerf, releasing the tube's internal stress at the same time. In conjunction with the radially arranged aluminum plates, the external guide rollers 421 are unfolded to fit against the outer wall of the tube to counteract the springback, so that the circular wing tube is gradually expanded into a 120°-150° fan-shaped billet. After passing through the conical unfolding mechanism 4, the fan-shaped billet enters the pressure roller gantry 5 for pre-pressing and shaping, suppressing the billet from shrinking and springback. The pre-pressed fan-shaped billet is fed into the high-opening straightening mechanism 6. The billet passes through the straightening channel formed by the upper straightening roller module 61 and the lower straightening roller module 62. The five upper straightening rollers with convex middle sections and arranged in descending power in the upper straightening roller module 61 and the lower straightening roller module 62, together with the four matching ribs and roller rings of the lower straightening roller, are rolled step by step to correct the warping of the plate surface, protect the internal ribs from twisting and deformation, and complete the overall flattening process. The flattened ribbed sheet is conveyed to the discharge section 22. The traction power mechanism 7 clamps the sheet and provides continuous conveying traction force, pulling the sheet backward at a uniform speed. Finally, it is smoothly delivered through the output roller conveyor 8. The output roller conveyor 8 can be connected to an external transport frame to transfer the finished sheet. In the above process, the pushing, sawing, pressing, straightening and traction actions of each mechanism of the whole machine are powered by the hydraulic system and uniformly controlled by the PLC of the electrical control system, completing the integrated continuous flattening processing of aluminum alloy wing tubes.

[0032] A method for using a special flattening device for aluminum alloy wing tubes includes the following steps: Step 1: When the device is needed, first place the aluminum alloy wing tube on the V-shaped support plate 1111 of the loading slide 111, and start the loading push rod 11 to push the wing tube forward. Step 2: The fixed cutting saw mechanism 3 then opens an axial slit at the top of the wing tube, and after being limited by the cutting guide positioning wheel 41, it is sent into the conical unfolding mechanism 4. Step 3: The slotted wing tube, together with the internal guide fixture 42 and the aluminum plate, is unfolded and the external guide roller 421 is used to open it to form a fan-shaped blank. The blank enters the pressure roller gantry 5 to complete the pre-pressing. Step 4: The pre-pressed fan-shaped billet is fed into a high-opening straightening mechanism with 6 rollers for leveling, eliminating warping of the board surface and protecting the ribs; Step 5: The leveled sheet is pulled by the traction power mechanism 7, sent out through the output roller conveyor 8, and then transported away by the subsequent connected conveyor frame.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A special flattening device for aluminum alloy wing tubes, characterized in that: It includes a feeding wing tube feeding mechanism (1) and a receiving platform (2). The receiving platform (2) is provided with a feeding section (21) corresponding to the feeding wing tube feeding mechanism (1). The receiving platform (2) is provided with a fixed cutting saw mechanism (3), a conical unfolding mechanism (4) and a high opening degree straightening mechanism (6) in sequence along the traveling direction of the wing tube. The material receiving platform (2) is also provided with a discharge section (22) corresponding to the high opening degree straightening mechanism (6). The fixed cutting saw mechanism (3) is located between the feeding section (21) and the conical unfolding mechanism (4). The conical unfolding mechanism (4) and the high opening degree straightening mechanism (6) are also provided with a pressure roller gantry (5). The discharge section (22) is provided with a traction power mechanism (7) located outside the high opening degree straightening mechanism (6). The material receiving platform (2) is provided with an output roller conveyor (8) corresponding to the traction power mechanism (7).

2. The special flattening device for aluminum alloy wing tubes according to claim 1, characterized in that, The feeding wing tube feeding mechanism (1) includes a feeding push rod (11) fixedly installed below the material receiving platform (2). The piston rod of the feeding push rod (11) is connected to a feeding slide (111). The feeding slide (111) is slidably arranged on the feeding section (21) through the feeding push rod (11). The feeding slide (111) is used to push the wing tube along the axial direction of the wing tube. The feeding section (21) and the discharge section (22) are respectively arranged along the wing tube traveling direction.

3. The special flattening device for aluminum alloy wing tubes according to claim 2, characterized in that, The feeding slide (111) is fixedly provided with a V-shaped bearing plate (1111) on the side near the fixed cutting saw mechanism (3), and the V-shaped bearing plates (1111) form a V-shaped cavity that is adapted to the outer wall of the wing tube.

4. The special flattening device for aluminum alloy wing tubes according to claim 1, characterized in that, The fixed cutting saw mechanism (3) includes a fixed circular saw arranged along the centerline of the support platform (2), and the fixed circular saw in the fixed cutting saw mechanism (3) is used to cut openings along the axial direction of the wing tube.

5. The special flattening device for aluminum alloy wing tubes according to claim 4, characterized in that, The conical unfolding mechanism (4) includes a cutting guide positioning wheel (41), which is symmetrically distributed on both sides of the fixed circular saw in the fixed cutting saw mechanism (3). The cutting guide positioning wheel (41) is linearly arranged along the traveling direction of the wing tube.

6. The special flattening device for aluminum alloy wing tubes according to claim 5, characterized in that, The conical unfolding mechanism (4) also includes an internal guide fixture (42). The conical tip of the internal guide fixture (42) is close to the discharge side of the fixed circular saw in the fixed cutting saw mechanism (3). The internal guide fixture (42) is also provided with aluminum plate unfolding external guide wheels (421) that fit against both sides of the outer wall of the wing tube. The aluminum plate unfolding external guide wheels (421) are arranged linearly along the radial unfolding direction of the wing tube.

7. The special flattening device for aluminum alloy airfoil tubes according to claim 1, characterized in that, A traction power mechanism (7) is provided at the discharge section (22) and outside the high opening degree straightening mechanism (6), and the traction power mechanism (7) is arranged correspondingly to the output roller conveyor (8); The high-aperture straightening mechanism (6) includes an upper straightening roller module (61) and a lower straightening roller module (62) that are staggered vertically. The upper straightening roller module (61) consists of five upper straightening rollers. A high-aperture straightening channel is formed between the upper straightening roller module (61) and the lower straightening roller module (62). The upper straightening roller module (61) consists of five upper straightening rollers with a convex center, and the upper straightening rollers are arranged in descending power order. The lower straightening roller module (62) consists of four lower straightening rollers with roller rings. The upper roller rings of the lower straightening rollers are adapted to the rib spacing of the wing tube.

8. The special flattening device for aluminum alloy wing tubes according to claim 1, characterized in that, The material receiving platform (2) is also equipped with an electrical control system and a hydraulic system for driving the fixed cutting saw mechanism (3), the conical unfolding mechanism (4), the pressure roller gantry (5), the high opening degree straightening mechanism (6), and the traction power mechanism (7).

9. A method of using a special flattening device for aluminum alloy wing tubes, which is applied to the special flattening device for aluminum alloy wing tubes as described in claim 8, characterized in that: Includes the following steps: Step 1: When the device is needed, first place the aluminum alloy wing tube on the V-shaped support plate (1111) of the loading slide (111), and start the loading push rod (11) to push the wing tube forward. Step 2: The fixed cutting saw mechanism (3) opens an axial gap at the top of the wing tube and then sends it into the conical unfolding mechanism (4) after being limited by the cutting guide positioning wheel (41). Step 3: The slotted wing tube is used with the internal guide fixture (42) and the aluminum plate is unfolded and the external guide wheel (421) is used to open it to form a fan-shaped blank. The blank enters the pressure roller gantry (5) to complete the pre-pressing. Step 4: The pre-pressed fan-shaped billet is fed into the high-opening straightening mechanism (6) for roller pressing and leveling to eliminate warping of the plate surface and protect the ribs; Step 5: The leveled plate is pulled by the traction power mechanism (7), sent out through the output roller conveyor (8), and then transported away by the subsequent connected conveyor frame.

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