Arc-shaped aluminum alloy outer wall special-shaped plate processing device

Abstract

The application discloses an arc-shaped aluminum alloy outer wall special-shaped plate processing device and relates to the technical field of aluminum alloy plate processing. The device is aimed at the problems of single function, multiple transfer clamping, low production efficiency and poor forming precision of the existing single-curved aluminum alloy plate processing equipment, and is characterized in that the arc-pressing assembly and the roller-arc assembly are symmetrically integrated on the rack lifting seat, the knife seat and the die seat capable of 180-degree synchronous rotation are arranged in the arc-pressing assembly, the arc-pressing assembly integrates two forming stations of arc-bending and U-bending, the roller-arc assembly adopts a three-roller structure, the roller group is reversely and synchronously rotated through the spline shaft and a two-in-one driving mechanism, the device integrates the roller-arc, arc-bending and U-bending processes, the station switching is convenient, multiple processes can be completed through one-time clamping, the processing efficiency and the forming precision are effectively improved, and the arc-shaped aluminum alloy outer wall plate processing requirements of different curvatures and cross sections can be met.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy sheet processing technology, and in particular to a processing device for curved aluminum alloy exterior wall irregular-shaped sheets. Background Technology

[0002] Aluminum alloy sheets possess numerous advantages, including lightweight and high strength, weather and corrosion resistance, a wide range of surface treatments, excellent decorative effects, and recyclability. They can fulfill basic functions such as exterior wall cladding and thermal insulation, and can also meet the aesthetic expression needs of building facades through diverse design options. Therefore, they are widely used in building facade engineering. To adapt to the diverse building facade shapes and enhance the aesthetics and integrity of the facade, the application rate of irregular-shaped aluminum alloy exterior wall sheets continues to increase. Among them, single-curved aluminum alloy sheets are the most commonly used type of irregular-shaped sheet, mainly used for corner wrapping of walls, transition of curved facades, and edge finishing of curved eaves. In practical engineering applications, the required forming arc and cross-sectional shape of single-curved aluminum alloy exterior wall panels vary greatly depending on the different wall structures, corner dimensions, and facade curvature design requirements. There are both large-curvature rounded corner panels and small-curvature curved decorative panels. Some panels also need to be processed simultaneously with side folding or U-shaped bending structures to meet the splicing and installation requirements between curtain wall panels and the structural reinforcement requirements. This places high demands on the functional integration and process adaptability of the processing equipment.

[0003] Currently, the industry mainly employs three independent processes for the arc forming of single-curved aluminum alloy exterior wall panels: roll forming, folding forming, and stamping forming, each with its own dedicated processing equipment. Roll forming relies on a multi-roll mechanism to continuously roll the panel to achieve the arc shape, and is often used for pre-treatment to eliminate internal stress. Folding forming accumulates the panel's curvature by pressing creases one after another, and is mainly suitable for processing single-curved panels with large curvatures; it can also be used for edge forming of panels. Stamping relies on specialized molds to complete the panel forming through stamping action, and is mainly used for processing single-curved panels with small curvatures and U-shaped cross-section panels.

[0004] Because the various arc-making processes mentioned above are independent of each other and the equipment functions are singular, when processing different types of single-curved aluminum alloy exterior wall panels in actual production, the workpiece needs to be transferred and clamped multiple times between rolling equipment, bending equipment, and stamping equipment. This not only significantly lengthens the processing cycle and reduces production efficiency, but also causes cumulative positioning errors due to multiple clamping, which can easily lead to quality problems such as panel curvature deviation, bending position offset, and insufficient coaxiality between the cross section and the curved surface, making it difficult to guarantee the splicing and assembly accuracy of the curtain wall panels. Summary of the Invention

[0005] One objective of this invention is to provide a highly integrated arc-making device for single-curved aluminum alloy exterior wall panels that is compatible with multiple arc-making processes and adaptable to different arc and cross-sectional processing requirements, in order to solve the aforementioned problems.

[0006] A processing device for curved aluminum alloy exterior wall irregular-shaped panels according to an embodiment of the present invention includes a frame, a lifting seat vertically and slidably mounted on the frame, a main hydraulic cylinder fixedly mounted on the frame, and a downward lever frame for transmission between the main hydraulic cylinder and the lifting seat, wherein the main hydraulic cylinder extends to drive the lifting seat downward, and further includes: A width-limiting plate that is horizontally slidably installed within the frame; The pressure arc assembly and roller arc assembly are symmetrically installed on the left and right sides of the lifting seat; The arc-pressing assembly has the functions of bending arcs and pressing U-shaped bends. The arc-pressing assembly includes a knife holder and a mold holder rotatably mounted on a lifting base. Both the knife holder and the mold holder can rotate 180°. The knife holder and the mold holder are arranged vertically. The knife holder is symmetrically clamped with a first knife and a second knife along its axis. The mold holder is symmetrically provided with a first mold groove and a second mold groove that are adapted to the first knife and the second knife, so as to bend the sheet metal and press U-shaped bends. The roller arc assembly adopts a three-roller arc design, including an arc-pressing roller and two support rollers that are rotatably mounted on the lifting seat.

[0007] Preferably, racks are fixedly installed on both sides of the bottom of the width limiting plate, and an adjustment shaft is rotatably installed on the bottom of the width limiting plate and two gears that mesh with the racks are fixedly installed on the adjustment shaft. An adjustment handwheel is fixedly installed on one end of the adjustment shaft.

[0008] Preferably, a positioning pin is provided on one side of the width limiting plate and mounted on the lifting seat for circumferential positioning of the adjusting shaft. A scale is fixedly installed on the width limiting plate, and a scale mark is also fixedly installed on the frame on one side of the width limiting plate.

[0009] Preferably, the arc pressing assembly further includes a vertical slide rail slidably installed in the frame, two sliders slidably installed on the vertical slide rail, a rod sleeve fixedly installed on the slider, an insert rod fixedly installed at one end of the shaft of the tool holder and the mold holder, the insert rod and the rod sleeve slidingly fitted relative to each other, the rod sleeve is provided with a spiral groove and the insert rod is provided with a protrusion slidably assembled in the spiral groove.

[0010] Preferably, the arc pressing assembly further includes a switching hydraulic cylinder fixedly installed in the frame, wherein the starting and ending points of the spiral groove on the rod sleeve are 180° apart on the circumference, and the extension of the switching hydraulic cylinder drives the vertical slide rail to translate so as to drive the tool holder and the mold holder to rotate synchronously by 180°.

[0011] Preferably, the end of the first cutter is arc-shaped, the diameter of the end of the first cutter is equal to the thickness of the first cutter, and the first mold groove is V-shaped.

[0012] Preferably, the end of the second cutter is arc-shaped, the diameter of the end of the second cutter is greater than the thickness of the second cutter, the second mold groove is U-shaped, two pressure-holding strips are radially rotatably installed in the second mold groove along its axis, and an I-shaped limiting strip is provided in the second mold groove. Both pressure-holding strips are movably clamped in the limiting strip, and the limiting strip drives the two pressure-holding strips to rotate in a clamping trend during the pressing process.

[0013] Preferably, the support roller has multiple annular grooves at equal intervals to prevent the sheet metal from folding.

[0014] Preferably, the roller arc assembly further includes a spline shaft vertically rotatably mounted in the frame, and a motor for driving the spline shaft to rotate is fixedly mounted in the frame. The spline shaft is slidably fitted with a gear seat, and the shaft of the arc pressing roller is rotatably mounted in the gear seat. A bevel gear pair for driving the arc pressing roller and the spline shaft is mounted on the gear seat, and one of the bevel gears in the bevel gear pair is splinedly connected to the spline shaft.

[0015] Preferably, the roller assembly further includes a one-to-two transmission box disposed between the two support rollers and the spline shaft. One end of the shaft of each of the two support rollers extends into the one-to-two transmission box and is fixedly mounted with a first eccentric roller. One end of the input shaft of the one-to-two transmission box is fixedly mounted with a second eccentric roller. A transmission block is disposed inside the one-to-two transmission box. Corresponding circular holes are opened on the transmission block corresponding to the first and second eccentric rollers. The input shaft of the one-to-two transmission box and the spline shaft are also driven by a bevel gear pair.

[0016] The beneficial effects of this invention are: This invention integrates three forming processes: three-roll continuous arc forming, sequential arc forming, and U-shaped section stamping. It has good adaptability and versatility, and can simultaneously meet the processing needs of large-curvature rounded corner panels, small-curvature curved decorative panels, and panels with U-shaped bending structures. Through adjustable width limiting structure and pressure adjustment, it can adapt to curved aluminum alloy exterior wall panels of different widths and curvature specifications. There is no need to configure multiple dedicated processing equipment. At the same time, the synchronous rotation and repositioning structure of the tool holder and the die holder enables rapid switching between arc forming and U-shaped bending positions. Combined with the continuous three-roll arc forming structure, the workpiece can be clamped and positioned once to complete multi-process composite processing, eliminating the workpiece transfer, secondary clamping, and repeated positioning between multiple equipment, greatly shortening the processing cycle, significantly improving production efficiency, and ensuring the forming accuracy and quality consistency of the panels. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a processing device for irregularly shaped arc-shaped aluminum alloy exterior wall panels proposed in this invention. Figure 2 This is a right perspective view of a processing device for curved aluminum alloy exterior wall irregular-shaped panels proposed in this invention; Figure 3 This is a schematic diagram of the width-limiting plate in a processing device for irregularly shaped arc-shaped aluminum alloy exterior wall panels proposed in this invention. Figure 1 ; Figure 4 This is a schematic diagram of the width-limiting plate in a processing device for irregularly shaped arc-shaped aluminum alloy exterior wall panels proposed in this invention. Figure 2 ; Figure 5 This is a schematic diagram of the installation of the lifting seat in a processing device for irregularly shaped arc-shaped aluminum alloy exterior wall panels proposed in this invention. Figure 6 This is a schematic diagram of the arc-pressing component in a processing device for irregularly shaped arc-shaped aluminum alloy exterior wall panels proposed in this invention; Figure 7 This is a schematic diagram of the installation of the tool holder and mold holder in a processing device for curved aluminum alloy exterior wall irregular-shaped panels proposed in this invention; Figure 8 This is a schematic diagram of the mold base in a processing device for curved aluminum alloy exterior wall irregular-shaped panels proposed in this invention; Figure 9 This is a schematic diagram of the morphology of the pressure arc and the roller arc in a processing device for curved aluminum alloy exterior wall irregular-shaped panels proposed in this invention; Figure 10 This is a schematic diagram of the roller arc assembly in a processing device for arc-shaped aluminum alloy exterior wall panels proposed in this invention; Figure 11 This is a schematic diagram of the internal structure of a one-to-two transmission box in a processing device for irregularly shaped arc-shaped aluminum alloy exterior wall panels proposed in this invention.

[0018] In the diagram: 1. Frame; 101. Lifting seat; 102. Lowering lever frame; 103. Main hydraulic cylinder; 2. Width limiting plate; 201. Rack; 202. Gear; 203. Adjusting handwheel; 204. Positioning pin; 205. Scale; 206. Scale mark; 3. Arc pressing assembly; 301. Tool holder; 302. Mold holder; 303. Vertical slide rail; 304. Switching hydraulic cylinder; 305. Insert rod; 306. Slider; 307. Rod sleeve; 308. Distance sensor; 309. First tool; 310. Second tool; 311. First mold groove; 312. Second mold groove; 313. Pressure holding strip; 314. Limiting strip; 4. Roller arc assembly; 401. Arc pressing roller; 402. Support roller; 403. Splined shaft; 404. Gear seat; 405. One-to-two transmission box; 406. First eccentric roller; 407. Second eccentric roller; 408. Transmission block. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0020] refer to Figures 1-11 This invention discloses a processing device for curved aluminum alloy exterior wall irregular-shaped panels, including a frame 1, as shown in the reference. Figure 5 A lifting seat 101 is vertically slidably mounted on the frame 1. A main hydraulic cylinder 103 is fixedly mounted on the frame 1. A downward lever frame 102 for transmission between the main hydraulic cylinder 103 and the lifting seat 101 is also mounted on the frame 1. The main hydraulic cylinder 103 extends to drive the lifting seat 101 downward. The frame also includes a width limiting plate 2 horizontally slidably mounted within the frame 1, and arc pressing components 3 and roller arc components 4 symmetrically mounted on the left and right sides of the lifting seat 101. (See reference) Figure 6 The arc pressing assembly 3 has the functions of bending arcs and pressing U-shaped bends. The arc pressing assembly 3 includes a cutter holder 301 and a mold holder 302 rotatably mounted on the lifting seat 101. (See reference) Figure 10 The roller arc assembly 4 adopts a three-roller arc design, including an arc-pressing roller 401 and two support rollers 402 rotatably mounted on the lifting seat 101. The arc-pressing roller 401 and the support rollers 402 rotate synchronously and in opposite directions. The arc-pressing roller 401 is located in the middle position above the two support rollers 402. The axes of the three are parallel to each other and are in the same vertical forming plane, forming a three-roller pressing pair. The relative height difference between the arc-pressing roller 401 and the support rollers 402 can be adjusted by controlling the downward pressure of the lifting seat 101, thereby controlling the radius of curvature of the plate arc forming.

[0021] refer to Figure 3 and Figure 4The width limiting plate 2 has racks 201 fixedly installed on both sides of its bottom. The bottom of the width limiting plate 2 is also provided with an adjustment shaft rotatably installed on the frame 1. Two gears 202 that mesh with the racks 201 are fixedly installed on the adjustment shaft. An adjustment handwheel 203 is fixedly installed on one end of the adjustment shaft. The two gears 202 mesh with the racks 201 on both sides of the bottom of the width limiting plate 2. When the adjustment handwheel 203 is rotated, the adjustment shaft drives the two gears 202 to rotate synchronously. Through the gear and rack meshing transmission, the width limiting plate 2 is driven to slide along the horizontal guide rail of the frame 1 to adjust the width of the two folded edges and adapt to the production needs of aluminum alloy sheet folding of different width specifications. A positioning pin 204 is installed on one side of the width limiting plate 2 and mounted on the lifting seat 101 for circumferential positioning of the adjusting shaft. A scale 205 is fixedly installed on the width limiting plate 2, and a scale mark 206 is also fixedly installed on the frame 1 on one side of the width limiting plate 2. The positioning pin 204 adopts a plug-in locking structure. After the width of the width limiting plate 2 is adjusted to the correct position, the positioning pin 204 is inserted into the positioning tooth groove at the end of the adjusting shaft to restrict the circumferential rotation of the adjusting shaft and lock the position of the width limiting plate 2. The scale 205 moves horizontally synchronously with the width limiting plate 2. The spacing value can be directly read through the fixed scale mark 206 to ensure the accuracy of the width adjustment.

[0022] refer to Figure 6 Both the tool holder 301 and the mold holder 302 can rotate 180°. The tool holder 301 and the mold holder 302 are arranged vertically. The tool holder 301 is symmetrically fixed with a first tool 309 and a second tool 310 along its axis. The mold holder 302 is symmetrically provided with a first mold groove 311 and a second mold groove 312 that are adapted to the first tool 309 and the second tool 310, for use in bending and U-shaped bending of sheet metal. The rotation axes of the tool holder 301 and the mold holder 302 are coaxial. The first tool 309 and the first mold groove 311 correspond vertically to form a bending forming station. The second tool 310 and the second mold groove 312 correspond vertically to form a U-shaped bending forming station. After the tool holder 301 and the mold holder 302 rotate 180° synchronously, the two forming stations can be switched vertically without disassembling and replacing the tools and molds. refer to Figure 7The arc pressing assembly 3 also includes a vertical slide rail 303 slidably mounted within the frame 1. Two sliders 306 are slidably mounted on the vertical slide rail 303. A rod sleeve 307 is fixedly mounted on each slider 306. An insert rod 305 is fixedly mounted on one end of the shaft of the tool holder 301 and the mold holder 302. The insert rod 305 and the rod sleeve 307 are slidably fitted together. The rod sleeve 307 has a spiral groove, and the insert rod 305 has a protrusion slidably fitted into the spiral groove. A distance sensor 308 is also installed between the two sliders 306. The two sliders 306 are independently set corresponding to the insert rods 305 on the tool holder 301 and the mold holder 302, respectively. The distance sensor 308 is used to detect the relative displacement of the two sliders 306 in real time to provide feedback on the rotation angle of the tool holder 301 and the mold holder 302, ensuring the angular accuracy of the workstation switching. 3 also includes a switching hydraulic cylinder 304 fixedly installed in the frame 1. The starting and ending points of the spiral groove on the sleeve 307 are 180° apart on the circumference. The extension of the switching hydraulic cylinder 304 drives the vertical slide rail 303 to translate, thereby driving the tool holder 301 and the mold holder 302 to rotate synchronously by 180°. The piston rod end of the switching hydraulic cylinder 304 is fixedly connected to one end of the vertical slide rail 303. When the switching hydraulic cylinder 304 performs the telescopic movement, it drives the vertical slide rail 303 to reciprocate in the horizontal direction, and then drives the sleeve 307 to translate synchronously through the slider 306. The spiral groove on the sleeve 307 cooperates with the protrusion on the insertion rod 305 to convert the linear motion into the rotational motion of the insertion rod 305, realizing the 180° synchronous rotation and repositioning of the tool holder 301 and the mold holder 302. This rigid transmission connection makes the angle switching more precise.

[0023] refer to Figure 8 and Figure 9 The end of the first cutter 309 is arc-shaped, and the diameter of the end of the first cutter 309 is equal to the thickness of the first cutter 309. The first mold groove 311 is V-shaped. The arc-shaped end of the first cutter 309 and the bottom gap of the V-shaped first mold groove 311 are adapted to the thickness of the plate. During the bending process, the first cutter 309 is pressed down with the lifting seat 101 to bend the plate at a single point. A continuous arc is formed by feeding step by step and accumulating bending marks. It is suitable for forming and processing large curvature arc plates. The arc-shaped cutter head can avoid damaging the surface of the plate. The end of the second cutter 310 is arc-shaped, and the diameter of the end of the second cutter 310 is greater than the thickness of the second cutter 310. The second mold groove 312 is U-shaped, and two pressure-holding strips 313 are installed radially along its axis inside the second mold groove 312. A limit strip 314 in the shape of an "I" is provided inside the second mold groove 312. Both pressure-holding strips 313 are movably clamped in the limit strip 314. When the limit strip 314 is pressed down, it drives the two pressure-holding strips 313 to rotate in a clamping trend. During the pressing down of the second cutter 310, its end first contacts the top of the limit strip 314 and pushes it to move downward along the centerline of the second mold groove 312. The transverse wings on both sides of the limit strip 314 drive the two pressure-holding strips 313 to rotate in opposite directions around their respective axes, clamping and holding the side walls of the U-shaped bend, offsetting the springback stress of the sheet metal, and ensuring the forming angle of the U-shaped section and the parallelism of the side.

[0024] refer to Figure 10 The support roller 402 has multiple annular grooves at equal intervals to prevent the sheet metal from folding. The annular grooves are evenly spaced along the axial direction of the support roller 402. The width and depth of the grooves are adapted to the size of the side fold of the sheet metal. During the roller arcing process, the side fold of the sheet metal that has been processed can be embedded in the annular groove to prevent the fold from being flattened and deformed by the roller surface during the rolling process. At the same time, the annular grooves play an axial limiting role for the sheet metal to prevent the sheet metal from deviating during the roller arcing process. The roller arcing assembly 4 also includes a spline shaft 403 that is vertically rotatably installed in the frame 1. A motor for driving the spline shaft 403 to rotate is fixedly installed in the frame 1. The spline shaft 403 is slidably fitted with a gear seat 404. The shaft of the arc pressing roller 401 is rotatably installed in the gear seat 404. A bevel gear pair for driving the arc pressing roller 401 and the spline shaft 403 is installed on the gear seat 404, and one of the bevel gears in the bevel gear pair is splinedly connected to the spline shaft 403. Among them, the gear seat 404 is fixedly connected to the lifting seat 101 and can rise and fall synchronously with the lifting seat 101 along the spline shaft 403. The spline connection structure ensures continuous power transmission during the lifting and adjustment process. The drive motor on the frame 1 outputs torque to the spline shaft 403, and then transmits it to the arc pressing roller 401 through the bevel gear pair, driving the arc pressing roller 401 to rotate around its own axis, providing active driving force for the plate roller arc feeding. refer to Figure 11 The roller assembly 4 also includes a two-to-one transmission box 405 disposed between two support rollers 402 and spline shaft 403. One end of the shaft of each of the two support rollers 402 extends into the two-to-one transmission box 405 and is fixedly mounted with a first eccentric roller 406. One end of the input shaft of the two-to-one transmission box 405 is fixedly mounted with a second eccentric roller 407. A transmission block 408 is disposed inside the two-to-one transmission box 405. Corresponding circular holes are opened on the transmission block 408 corresponding to the first eccentric roller 406 and the second eccentric roller 407. The input shaft of the two-to-one transmission box 405 and the spline shaft 403 are also driven by a bevel gear pair. The spline shaft 403 drives the input shaft of the one-to-two transmission box 405 to rotate through the bevel gear pair. The second eccentric roller 407 on the input shaft rotates synchronously with the shaft. Through the planar translation of the transmission block 408, the two first eccentric rollers 406 rotate synchronously in opposite directions, thereby driving the two support rollers 402 to rotate synchronously in opposite directions with the arc pressing roller 401. This allows the sheet metal to be fed at a uniform speed and smoothly during the rolling process, realizing continuous roll arc forming, or used for pre-bending stress relief treatment in the early stage of folding.

[0025] Working principle: Before processing, according to the width of the aluminum alloy sheet to be processed and the forming process requirements, first rotate the adjusting handwheel 203 to adjust the distance between the two width limiting plates 2. After confirming the size by using the scale 205 and scale mark 206, insert the positioning pin 204 to lock it. When roller arc processing is required, the lifting seat 101 drives the roller arc assembly 4 to press down to the set depth. The motor drives the spline shaft 403 to rotate, which drives the arc pressing roller 401 and the one-to-two transmission box 405 to rotate through the bevel gear pair, so that the arc pressing roller 401 and the two support rollers 402 rotate synchronously in opposite directions. The continuous feeding of the sheet metal completes the roller arc forming. When it is necessary to perform arc or U-bend processing, the switching hydraulic cylinder 304 drives the tool holder 301 and the mold holder 302 to rotate 180° synchronously, switching the corresponding forming station to the working position. The main hydraulic cylinder 103 drives the lifting seat 101 to press down through the lowering lever frame 102, so that the tool and the mold groove cooperate to complete the corresponding forming processing. During the processing, the pressure holding strip 313 clamps and holds pressure to suppress springback. The same sheet metal can be processed by multiple processes in combination through the roller arc assembly 4 and the arc pressing assembly 3 in sequence, without the need for multiple transfers and clamping.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A processing device for curved aluminum alloy exterior wall irregular-shaped panels, characterized in that, The system includes a frame (1), on which a lifting seat (101) is vertically slidably mounted, and a main hydraulic cylinder (103) is fixedly mounted. A downward lever frame (102) for transmission between the main hydraulic cylinder (103) and the lifting seat (101) is also mounted on the frame (1). The main hydraulic cylinder (103) extends to drive the lifting seat (101) downward. The system also includes: A width limiting plate (2) is horizontally slidably installed inside the frame (1); The pressure arc assembly (3) and the roller arc assembly (4) are symmetrically installed on the left and right sides of the lifting seat (101). The arc pressing assembly (3) has the functions of arc bending and U-shaped bending. The arc pressing assembly (3) includes a knife holder (301) and a mold holder (302) rotatably mounted on the lifting seat (101). Both the knife holder (301) and the mold holder (302) can rotate 180°. The knife holder (301) and the mold holder (302) are arranged vertically. The knife holder (301) is symmetrically fixed with a first knife (309) and a second knife (310) along its axis. The mold holder (302) is symmetrically provided with a first mold groove (311) and a second mold groove (312) that are adapted to the first knife (309) and the second knife (310) along its axis, for use in arc bending and U-shaped bending of sheet metal. The roller arc assembly (4) adopts a three-roller arc design, including an arc pressing roller (401) and two support rollers (402) rotatably mounted on the lifting seat (101).

2. The processing device for arc-shaped aluminum alloy exterior wall panels according to claim 1, characterized in that, The width limiting plate (2) has racks (201) fixedly installed on both sides of its bottom. The bottom of the width limiting plate (2) is also provided with an adjustment shaft that is rotatably installed on the frame (1) and two gears (202) that mesh with the racks (201) are fixedly installed on the adjustment shaft. An adjustment handwheel (203) is fixedly installed on one end of the adjustment shaft.

3. The processing device for arc-shaped aluminum alloy exterior wall panels according to claim 2, characterized in that, The width limiting plate (2) is provided with a positioning pin (204) installed on the lifting seat (101) on one side for circumferential positioning of the adjusting shaft. A scale (205) is fixedly installed on the width limiting plate (2). A scale mark (206) is also fixedly installed on the frame (1) on one side of the width limiting plate (2).

4. The processing device for arc-shaped aluminum alloy exterior wall panels according to claim 1, characterized in that, The arc pressing assembly (3) also includes a vertical slide rail (303) slidably installed in the frame (1). Two sliders (306) are slidably installed on the vertical slide rail (303). A rod sleeve (307) is fixedly installed on the slider (306). A plug rod (305) is fixedly installed at one end of the shaft of the tool holder (301) and the mold holder (302). The plug rod (305) and the rod sleeve (307) are slidably fitted together. A spiral groove is opened on the rod sleeve (307) and a protrusion is provided on the plug rod (305) that is slidably assembled in the spiral groove.

5. The processing device for arc-shaped aluminum alloy exterior wall panels according to claim 4, characterized in that, The arc pressing assembly (3) also includes a switching hydraulic cylinder (304) fixedly installed in the frame (1). The starting and ending points of the spiral groove on the sleeve (307) are 180° apart on the circumference. The switching hydraulic cylinder (304) extends to drive the vertical slide rail (303) to translate so as to drive the tool holder (301) and the mold holder (302) to rotate synchronously by 180°.

6. The processing device for arc-shaped aluminum alloy exterior wall panels according to claim 1, characterized in that, The end of the first cutter (309) is arc-shaped, the diameter of the end of the first cutter (309) is equal to the thickness of the first cutter (309), and the first mold groove (311) is V-shaped.

7. The processing device for arc-shaped aluminum alloy exterior wall panels according to claim 1, characterized in that, The end of the second cutter (310) is arc-shaped, and the diameter of the end of the second cutter (310) is greater than the thickness of the second cutter (310). The second mold groove (312) is U-shaped. Two pressure-holding strips (313) are installed radially along the axis of the second mold groove (312). A limiting strip (314) in the shape of an "I" is provided in the second mold groove (312). Both pressure-holding strips (313) are movably clamped in the limiting strip (314). When the limiting strip (314) is pressed down, it drives the two pressure-holding strips (313) to rotate in a clamping trend.

8. The processing device for arc-shaped aluminum alloy exterior wall irregular-shaped panels according to claim 1, characterized in that, The support roller (402) has multiple annular grooves at equal intervals to prevent the sheet metal from folding.

9. The processing device for arc-shaped aluminum alloy exterior wall panels according to claim 1, characterized in that, The roller arc assembly (4) further includes a spline shaft (403) that is vertically rotatably mounted in the frame (1), and a motor for driving the spline shaft (403) to rotate is fixedly mounted in the frame (1). The spline shaft (403) is slidably fitted with a gear seat (404). The shaft of the arc pressing roller (401) is rotatably mounted in the gear seat (404). A bevel gear pair for driving the arc pressing roller (401) and the spline shaft (403) is mounted on the gear seat (404), and one of the bevel gears in the bevel gear pair is splinedly connected to the spline shaft (403).

10. The processing device for arc-shaped aluminum alloy exterior wall panels according to claim 1, characterized in that, The roller assembly (4) also includes a one-to-two transmission box (405) disposed between two support rollers (402) and spline shaft (403). One end of the shaft of the two support rollers (402) extends into the one-to-two transmission box (405) and a first eccentric roller (406) is fixedly installed in each of them. One end of the input shaft of the one-to-two transmission box (405) is fixedly installed with a second eccentric roller (407). A transmission block (408) is disposed in the one-to-two transmission box (405). Corresponding circular holes are opened on the transmission block (408) corresponding to the first eccentric roller (406) and the second eccentric roller (407). The input shaft of the one-to-two transmission box (405) and the spline shaft (403) are also driven by a bevel gear pair.

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