Hyperbolic aluminum square tube forming device and process

Abstract

This invention discloses a hyperbolic aluminum square tube forming device and process, belonging to the field of hyperbolic aluminum square tube forming technology. It includes a transmission frame, a limiting mechanism, a heating mechanism, a bending mechanism, and a cooling mechanism. Multiple transmission rollers are rotatably connected to the transmission frame. This hyperbolic aluminum square tube forming device and process, through the coordinated design of the limiting mechanism, heating mechanism, and bending mechanism, constructs a precision machining system that is adjustable throughout the entire process from blank centering to forming angle. The bending mechanism can precisely move the bending rollers to specific coordinate positions within the chute according to the complex curvature radius requirements of the hyperbolic arc surface. This breaks the limitations of traditional fixed molds, allowing the aluminum square tube to be subjected to multi-directional, gradually changing extrusion forces as it passes through multiple bending rollers arranged according to a preset trajectory under transmission thrust. This precisely shapes a continuously changing spatial hyperbolic arc surface, significantly improving the controllability and precision of irregular curved surface forming.

Description

Technical Field

[0001] This invention belongs to the field of hyperbolic aluminum square tube forming technology, specifically a hyperbolic aluminum square tube forming device and process. Background Technology

[0002] Hyperbolic aluminum square tubes, as a type of metal decorative material with three-dimensional curved surface characteristics, are widely used in the interior and exterior decoration and curtain wall projects of large public buildings, airport terminals, cultural and art centers and commercial complexes due to their smooth lines, varied shapes and light texture. The core manufacturing process usually involves heating and shaping straight aluminum square tube blanks and bending them with external force to produce continuous curvature changes in both horizontal and vertical directions, thereby forming a hyperbolic arc cross section.

[0003] Currently, the industry mainly relies on the following methods for forming and processing hyperbolic aluminum square tubes: First, using an integral hot pressing mold to press the heated blank into the upper and lower matching arc-shaped mold cavities in one go; second, using a CNC roll bending machine to roll and bend the blank successively through multiple rollers; and third, manually heating in a simple heating furnace and then manually bending it with the help of a general tube bender.

[0004] However, the aforementioned existing technologies still have significant shortcomings in practical production applications, specifically: 1. The integral hot pressing mold method has extremely high requirements for mold processing precision, and one mold can only correspond to a product with a specific radius of curvature and arc length. Once the product size or curvature changes, the mold must be redesigned and manufactured, resulting in a long production preparation cycle and high cost, making it difficult to adapt to the flexible production needs of multiple varieties and small batches.

[0005] 2. Although CNC roll bending machines can achieve a certain degree of automated bending, the position of their rollers is usually roughly adjusted by manual screws or requires stopping the machine for adjustment. They lack a multi-point, independent and precisely positioned roller group layout, which makes it difficult to independently and precisely control the force direction and deformation of each part of the blank when processing hyperboloidal arc surfaces with continuously changing curvature. As a result, the formed arc surface is prone to quality defects such as local wrinkles, cross-sectional distortion or uneven springback.

[0006] 3. After bending, the cooling process often uses natural air cooling or simple fan direct blowing, which has low cooling efficiency and uneven airflow distribution. During the slow cooling process, high-temperature workpieces are prone to secondary deformation caused by uneven release of thermal stress, which further reduces the dimensional stability of the finished product. Summary of the Invention

[0007] The purpose of this invention is to construct a precision machining system that is fully adjustable from blank centering to forming angle through the coordinated design of a limiting mechanism, a heating mechanism, and a bending mechanism. The bending mechanism can precisely move the bending wheel to a specific coordinate position within the groove according to the complex curvature radius requirements of the hyperboloid surface, breaking the limitations of traditional fixed molds. This allows the aluminum square tube to be subjected to multi-directional, gradually changing extrusion force as it passes through multiple bending wheels arranged along a preset trajectory under the transmission thrust, thereby accurately shaping a continuously changing spatial hyperboloid surface. This significantly improves the controllability and precision of irregular curved surface forming. The heating mechanism can flexibly adapt to aluminum square tube blanks of different thicknesses and reserves space for thermal expansion to avoid extrusion deformation. Simultaneously, the limiting mechanism ensures precise locking of the blank's centerline in the horizontal direction. The combination of these two mechanisms provides precise positioning of the blank before preheating from both vertical and horizontal dimensions. With uniform heating, bending defects caused by blank misalignment or uneven heating are effectively eliminated. The cooling mechanism rapidly cools the newly formed high-temperature hyperbolic aluminum square tube to a safe temperature, effectively shortening the shaping waiting time and preventing springback deformation caused by gravity or residual stress, thus ensuring the long-term stability of the finished product's curved surface. This invention compactly integrates four functional modules—limiting, heating, bending, and cooling—on a transmission frame. Each mechanism is driven independently and its control does not interfere with each other. When it is necessary to switch between hyperbolic aluminum square tube products of different specifications or curvatures, it is only necessary to quickly adjust the spacing of the limiting frame, the opening of the heating plate, and the coordinate position of each bending wheel through the motor, without changing any molds or reinstalling fixtures. This highly flexible parametric adjustment method enables the equipment to quickly adapt to the production needs of multiple varieties and small batches, significantly reducing traditional mold change time and tooling manufacturing costs, and significantly improving the flexibility and overall economic benefits of the production line.

[0008] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention provides a hyperbolic aluminum square tube forming device and process.

[0009] In a first aspect, the present invention provides a technical solution: a hyperbolic aluminum square tube forming device, comprising a transmission frame, a limiting mechanism, a heating mechanism, a tube bending mechanism, and a cooling mechanism, wherein multiple transmission rollers are rotatably connected to the transmission frame, the limiting mechanism is disposed on the transmission frame, the heating mechanism is disposed on the transmission frame, the tube bending mechanism is disposed on the transmission frame, and the cooling mechanism is disposed on the transmission frame. The limiting mechanism includes a control component and a limiting frame. A heating frame is fixedly connected to one side of the top of the transmission frame. The control component is located inside the heating frame. There are two limiting frames, both of which are located on the control component. The heating mechanism includes a lifting component and a heating plate. The lifting component is located inside the heating frame and has a movable seat. A fixed seat is fixedly connected to the bottom of the transmission frame. There are two heating plates, which are respectively installed on the fixed seat and the movable seat on the side close to each other. The pipe bending mechanism includes adjusting components and bending wheels. Multiple sets of adjusting components are provided, and all sets of adjusting components are provided on the transmission frame. Multiple bending wheels are provided, and each bending wheel is provided on each set of adjusting components. The cooling mechanism includes a flow component and a cooling fan blade. A cooling frame is fixedly connected to one side of the top of the transmission frame. A cooling motor is fixedly connected to the center of the top of the cooling frame. The cooling fan blade is fixedly connected to the output end of the cooling motor. The flow component is located on the cooling frame.

[0010] The positioning control component includes a positioning synchronization assembly, an adjustable distance motor, and two bidirectional threaded rods. Two bidirectional threaded rods are provided, and both bidirectional threaded rods are rotatably connected to the top two sides of the heating frame. Two limiting frames are threadedly connected to the two bidirectional threaded rods. The adjustable distance motor is fixedly connected to one side of the outer surface of the heating frame, and the output end of the adjustable distance motor is fixedly connected to one end of one of the bidirectional threaded rods. The positioning synchronization assembly is provided on the two bidirectional threaded rods.

[0011] The position control synchronization component includes a pitch-adjusting synchronous belt and pitch-adjusting synchronous gears. There are two pitch-adjusting synchronous gears, each of which is fixedly connected to one end of each bidirectional threaded rod. The pitch-adjusting synchronous belt is sleeved on the two pitch-adjusting synchronous gears, and the pitch-adjusting synchronous belt meshes with the two pitch-adjusting synchronous gears.

[0012] The lifting component includes a lifting synchronization assembly, lifting screws, and a lifting motor. Lifting slots are provided on both sides of the inner wall of the heating frame. There are two lifting screws, each of which is rotatably connected to each lifting slot. The two ends of the movable seat are threaded to the two lifting screws respectively. The lifting motor is fixedly connected inside the heating frame, and the output end of the lifting motor is fixedly connected to one end of one of the lifting screws. The lifting synchronization assembly is provided on the two lifting screws.

[0013] The lifting synchronization assembly includes a lifting synchronization toothed belt and lifting synchronization gears. There are two lifting synchronization gears, each of which is fixedly connected to one end of each lifting screw. The lifting synchronization toothed belt is sleeved on the two lifting synchronization gears and meshes with them.

[0014] Each of the adjustment components includes a drive assembly, a slide, a movable seat, and a mounting column. A bent pipe plate is fixedly connected inside the transmission frame. The slide is opened inside the bent pipe plate. The drive assembly is located inside the slide. The movable seat is slidably connected inside the slide and is connected to the drive assembly. The mounting column is fixedly connected to the top of the movable seat. The bent pipe wheel is mounted on the mounting column.

[0015] The drive assembly includes a tube bending adjustment motor and a tube bending screw. The tube bending screw is rotatably connected in the slide groove and threadedly connected to the moving seat. The tube bending adjustment motor is fixedly connected to one side of the outer surface of the transmission frame, and the output end of the tube bending adjustment motor is fixedly connected to one end of the tube bending screw.

[0016] The circulation component includes a protective plate and a circulation hole. The protective plate is fixedly connected to the cooling rack near the top, and the circulation hole is opened at the top of the cooling rack.

[0017] Secondly, according to the first aspect above, the present invention also provides a technical solution: a hyperbolic aluminum square tube forming process, comprising the following steps: Step 1, Blank Conveying and Limiting: Place the aluminum square tube blank on the conveyor roller of the conveyor frame, start the control component, and clamp the blank from both sides through two limit frames to limit the horizontal displacement of the blank, and convey the blank to the heating station by the conveyor roller.

[0018] Step 2, Heating Treatment: After the blank enters the heating frame, the lifting component is activated to drive the movable seat to descend, so that the heating plate on the movable seat and the heating plate on the fixed seat together clamp and heat the blank from the top and bottom sides until it reaches the predetermined forming temperature.

[0019] Step 3, Bending and Forming: The heated blank is conveyed to the bending station. According to the radius of curvature of the target hyperbolic shape, multiple sets of adjustment components are activated to drive each bending wheel to move to the corresponding preset position, so that the blank is squeezed and bent by multiple bending wheels in sequence to form a hyperbolic arc shape.

[0020] Step 4: Cooling and Shaping: The bent aluminum square tube is transported to the cooling rack, the cooling motor is started to drive the cooling fan blades to rotate, and at the same time the cooling airflow is guided through the flow components to flow through the surface of the aluminum square tube for forced convection cooling. After cooling, the finished hyperbolic aluminum square tube is obtained.

[0021] Furthermore, in step four, the temperature of the cooling airflow is 20°C to 30°C.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) In this invention, a precision machining system that is adjustable throughout the entire process from blank centering to forming angle is constructed through the coordinated design of the limiting mechanism, heating mechanism and bending mechanism. The bending mechanism can accurately move the bending wheel to a specific coordinate position in the groove according to the complex curvature radius requirements of the hyperbolic arc surface, breaking the limitations of the traditional fixed mold. When the aluminum square tube passes through multiple bending wheels arranged according to the preset trajectory under the transmission thrust, it can be subjected to multi-directional and gradual extrusion force, thereby accurately shaping a continuously changing spatial hyperbolic arc surface, significantly improving the controllability and accuracy of irregular curved surface forming.

[0023] (2) In this invention, the use of heating mechanism can flexibly adapt to aluminum square tube blanks of different thicknesses and reserve thermal expansion space to avoid extrusion deformation. At the same time, the limiting mechanism ensures that the center line of the blank is accurately locked in the horizontal direction. The combination of the two can accurately position and uniformly heat the blank before preheating from both vertical and horizontal dimensions, effectively eliminating bending defects caused by blank offset or uneven heating.

[0024] (3) In this invention, by using a cooling mechanism, the high temperature hyperbolic aluminum square tube that has just been formed can be quickly cooled to a safe temperature, effectively shortening the shaping waiting time, preventing springback deformation caused by gravity or residual stress, and ensuring the long-term stability of the finished arc surface.

[0025] (4) In this invention, the four major functional modules of limiting, heating, bending and cooling are compactly integrated on the transmission frame. Each mechanism is driven independently and the control does not interfere with each other. When it is necessary to switch between hyperbolic aluminum square tube products of different specifications or curvatures, it is only necessary to quickly adjust the spacing of the limiting frame, the opening of the heating plate and the coordinate position of each bending wheel through the motor, without changing any mold or reinstalling the fixture. This highly flexible parameterized adjustment method enables the equipment to quickly adapt to the production needs of multiple varieties and small batches, greatly reducing the traditional mold changing time and tooling manufacturing cost, and significantly improving the flexibility level and comprehensive economic benefits of the production line. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the transmission frame of the present invention; Figure 4This is a partial cross-sectional view of the cooling mechanism of the present invention; Figure 5 This is a perspective view of the limiting mechanism of the present invention; Figure 6 This is an exploded view of the heating mechanism of the present invention; Figure 7 This is an exploded view of the pipe bending mechanism of the present invention; Figure 8 This is a flowchart of the present invention.

[0028] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Conveyor frame; 2. Conveyor roller; 3. Heating frame; 4. Adjustable pitch motor; 5. Bidirectional threaded rod; 6. Limit frame; 7. Fixed seat; 8. Lifting synchronous gear; 9. Bending pipe screw; 10. Slide groove; 11. Mounting column; 12. Protective plate; 13. Flow hole; 14. Cooling frame; 15. Bending pipe wheel; 16. Bending pipe adjusting motor; 17. Adjustable pitch synchronous gear; 18. Adjustable pitch synchronous toothed belt; 19. Movable seat; 20. Lifting synchronous toothed belt; 21. Lifting screw; 22. Lifting motor; 23. Heating plate; 24. Moving seat; 25. Cooling fan blade; 26. Cooling motor; 27. Lifting groove; 28. Bending pipe plate. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-8 As shown, the present invention is a hyperbolic aluminum square tube forming device and process.

[0031] Firstly, please refer to Figure 1 and Figure 7 As shown, the present invention provides an embodiment: a hyperbolic aluminum square tube forming device, comprising a transfer frame 1, a limiting mechanism, a heating mechanism, a tube bending mechanism, and a cooling mechanism. Multiple transfer rollers 2 are rotatably connected to the transfer frame 1. The limiting mechanism, the heating mechanism, the tube bending mechanism, and the cooling mechanism are all located on the transfer frame 1. The limiting mechanism includes a control component and a limiting frame 6. A heating frame 3 is fixedly connected to the top side of the transmission frame 1. The control component is located inside the heating frame 3. There are two limiting frames 6, both of which are located on the control component. The heating mechanism includes a lifting component and a heating plate 23. The lifting component is located inside the heating frame 3 and has a movable seat 19. A fixed seat 7 is fixedly connected to the bottom of the transmission frame 1. There are two heating plates 23, which are respectively installed on the fixed seat 7 and the movable seat 19 on the side close to each other. The pipe bending mechanism includes an adjusting component and a pipe bending wheel 15. The adjusting component is provided in multiple sets, and all sets of adjusting components are provided on the transmission frame 1. There are multiple pipe bending wheels 15, and each pipe bending wheel 15 is provided on each set of adjusting components. The cooling mechanism includes a flow component and a cooling fan blade 25. A cooling frame 14 is fixedly connected to the top side of the transmission frame 1. A cooling motor 26 is fixedly connected to the center of the top of the cooling frame 14. The cooling fan blade 25 is fixedly connected to the output end of the cooling motor 26. The flow component is located on the cooling frame 14.

[0032] In this implementation scheme: the limiting frame 6 is in direct contact with the aluminum square tube blank, and two of them are provided to clamp it from both sides, restricting the horizontal lateral displacement of the material and ensuring that the center line or path of the material is determined when it enters the heating and bending process. The two heating plates 23 are arranged opposite each other, and the vertical distance between the two heating plates 23 can be adjusted by raising and lowering the movable seat 19, so as to heat aluminum square tubes of different thicknesses, improve heating efficiency and uniformity. Each bending wheel 15 is installed on a set of corresponding adjustment components, so that each bending wheel 15 can be independently adjusted to a specific position to achieve precise control of different curvature radii or bending angles. The cooling fan blades 25 are directly driven to rotate by the cooling motor 26 fixed inside the cooling rack 14 to provide forced convection cooling.

[0033] Specifically: The positioning component includes a positioning synchronization assembly, a pitch motor 4, and two bidirectional threaded rods 5. There are two bidirectional threaded rods 5, both of which are rotatably connected to the top sides of the heating frame 3. Two limit frames 6 are threadedly connected to the two bidirectional threaded rods 5. The pitch motor 4 is fixedly connected to one side of the outer surface of the heating frame 3, and the output end of the pitch motor 4 is fixedly connected to one end of one of the bidirectional threaded rods 5. The positioning synchronization assembly is located on the two bidirectional threaded rods 5.

[0034] In this embodiment, the bidirectional threaded rod 5 controls the two limiting frames 6 to move simultaneously towards or away from each other, thereby achieving synchronous adjustment of the spacing and ensuring the smoothness and guidance of the movement of the limiting frames 6. The synchronization component ensures that the two bidirectional threaded rods 5 can rotate completely synchronously, thereby avoiding jamming or tilting of the two limiting frames 6 due to asynchronous movement and ensuring the limiting accuracy.

[0035] Specifically: The position synchronization component includes a pitch-adjustable synchronous belt 18 and a pitch-adjustable synchronous gear 17. There are two pitch-adjustable synchronous gears 17, each of which is fixedly connected to one end of each bidirectional threaded rod 5. The pitch-adjustable synchronous belt 18 is sleeved on the two pitch-adjustable synchronous gears 17, and the pitch-adjustable synchronous belt 18 meshes with the two pitch-adjustable synchronous gears 17.

[0036] In this embodiment: when an active bidirectional threaded rod 5 is driven to rotate by the pitch-adjusting motor 4, the pitch-adjusting synchronous gear 17 on it rotates accordingly, and the torque and speed are precisely transmitted to another driven pitch-adjusting synchronous gear 17 through the pitch-adjusting synchronous belt 18, thereby driving another bidirectional threaded rod 5 to rotate at the exact same speed.

[0037] Specifically: The lifting components include a lifting synchronization assembly, a lifting screw 21, and a lifting motor 22. Lifting slots 27 are provided on both sides of the inner wall of the heating frame 3. There are two lifting screws 21, each of which is rotatably connected to each lifting slot 27. The two ends of the movable seat 19 are threaded to the two lifting screws 21 respectively. The lifting motor 22 is fixedly connected to the heating frame 3, and the output end of the lifting motor 22 is fixedly connected to one end of one of the lifting screws 21. The lifting synchronization assembly is provided on the two lifting screws 21.

[0038] In this embodiment: the lifting groove 27 provides installation space for the lifting screw 21, and also provides a track and limit for the up and down movement of the movable seat 19. Two lifting screws 21 are located on both sides respectively, and the two ends of the movable seat 19 are threadedly connected to the two lifting screws 21 respectively, so that the lifting movement of the movable seat 19 is relatively stable and the force is balanced. It can ensure that the upper heating plate 23 and the lower heating plate 23 installed on the movable seat 19 remain precisely parallel. The lifting motor 22 drives one of the lifting screws 21 to rotate, and transmits the power synchronously to the other lifting screw 21 through the lifting synchronization component, ensuring that the two ends of the movable seat 19 can lift and lower synchronously and avoid tilting.

[0039] Specifically: The lifting synchronization assembly includes a lifting synchronization toothed belt 20 and a lifting synchronization gear 8. There are two lifting synchronization gears 8, each of which is fixedly connected to one end of each lifting screw 21. The lifting synchronization toothed belt 20 is sleeved on the two lifting synchronization gears 8, and the lifting synchronization toothed belt 20 meshes with the two lifting synchronization gears 8.

[0040] In this embodiment, the lifting synchronous belt 20 and the lifting synchronous gear 8 cooperate to ensure the complete synchronous rotation of the two lifting screws 21, thereby ensuring that the movable seat 19 and the heating plate 23 on it can be raised and lowered smoothly and horizontally.

[0041] Specifically: Each set of adjustment components includes a drive assembly, a slide 10, a movable seat 24, and a mounting column 11. A bent pipe plate 28 is fixedly connected inside the transmission frame 1. The slide 10 is opened inside the bent pipe plate 28. The drive assembly is located inside the slide 10. The movable seat 24 is slidably connected inside the slide 10 and is connected to the drive assembly. The mounting column 11 is fixedly connected to the top of the movable seat 24. The bent pipe wheel 15 is installed on the mounting column 11.

[0042] In this embodiment: a groove 10 is formed on the bending plate 28, and the movable seat 24 is restricted to slide within the groove 10. This ensures that the movement path of the bending wheel 15 is a precise straight line or a specific trajectory determined by the shape of the groove 10, thereby improving the accuracy of the bending position. A mounting post 11 is first fixed to the top of the movable seat 24, and then the bending wheel 15 is mounted on the mounting post 11, which increases the height of the bending wheel 15, enabling it to adapt to aluminum square tubes of different heights, and also facilitating the replacement and maintenance of the bending wheel 15.

[0043] Specifically: the drive assembly includes a tube bending adjustment motor 16 and a tube bending screw 9. The tube bending screw 9 is rotatably connected in the slide groove 10 and is threadedly connected to the moving seat 24. The tube bending adjustment motor 16 is fixedly connected to one side of the outer surface of the transmission frame 1, and the output end of the tube bending adjustment motor 16 is fixedly connected to one end of the tube bending screw 9.

[0044] In this embodiment: the bending screw 9 is rotatably connected in the slide groove 10, and the movable seat 24 is sleeved on the screw through the threaded hole to form a precision screw and nut pair. The bending adjustment motor 16 is fixed on the outside of the transmission frame 1, and its output shaft is directly connected to the end of the bending screw 9. When the bending adjustment motor 16 rotates, it drives the bending screw 9 to rotate. Since the slide groove 10 restricts the rotational freedom of the movable seat 24, the movable seat 24 will move precisely in a straight line along the slide groove 10 under the drive of the bending screw 9, thereby realizing the precise adjustment of the position of the bending wheel 15. This structure has good self-locking properties, and the position is stable after positioning, and it is not easy to be displaced due to force.

[0045] Specifically: The circulation component includes a protective plate 12 and a circulation hole 13. The protective plate 12 is fixedly connected to the cooling rack 14 near the top, and the circulation hole 13 is opened at the top of the cooling rack 14.

[0046] In this embodiment: the protective plate 12 prevents foreign objects such as dust and debris from falling directly onto the cooling fan blades 25 or the workpiece being cooled. At the same time, as a guide plate, it can change the direction of the cooling airflow, making the airflow generated by the fan more evenly distributed and blown onto the surface of the aluminum square tube, thereby improving the cooling efficiency. The flow hole 13 serves as the air inlet or outlet for cooling air. When the cooling fan blades 25 rotate, cold air from the outside can be drawn in through the flow hole 13 at the top, or hot air can be discharged, forming a smooth air convection circulation system that is connected to the outside, which is conducive to the rapid dissipation of heat.

[0047] In use, start the pitch adjustment motor 4. The pitch adjustment synchronous belt 18 and the pitch adjustment synchronous gear 17 of the position synchronization component drive the two bidirectional threaded rods 5 to rotate synchronously. Observe the relative movement of the two limit frames 6 on the bidirectional threaded rods 5, and make them move towards each other or away from each other at the same time until the inner side of the limit frame 6 just touches the two sides of the aluminum square tube blank. After confirming that the distance is appropriate, stop the pitch adjustment motor 4. Use the self-locking characteristic of the thread to keep the position of the limit frame 6 fixed. Set the two heating plates 23 to the process temperature required for the hot bending of the aluminum square tube. Start the lifting motor 22, which drives the two lifting screws 21 to rotate synchronously through the lifting synchronous belt 20 and lifting synchronous gear 8 of the lifting synchronous assembly. This drives the movable seat 19 to rise and fall vertically along the lifting groove 27, adjusting the vertical distance between the upper heating plate 23 on the movable seat 19 and the lower heating plate 23 on the fixed seat 7 to be slightly larger than the thickness of the aluminum square tube blank to allow for thermal expansion. According to the hyperbolic arc or bending radius required by the drawing, calculate the specific coordinate position of the movable seat 24 in the slide groove 10 in each group of adjustment components. Start the bending pipe adjustment motor 16 corresponding to each slide groove 10 in sequence, drive the bending pipe screw 9 to rotate, and push the movable seat 24 to move precisely along the slide groove 10 to the calculated coordinate position. Turn on the transmission roller shaft 2 drive motor on the transmission frame 1 to transport the aluminum square tube blank forward. The blank first passes through the limit frame 6 for precise guidance, and then enters the heating frame 3 area, where it is uniformly heated to the shaping temperature between the two heating plates 23. The heated soft aluminum square tube continues to move forward, and under the action of the transmission thrust, it passes through multiple layers arranged according to the preset trajectory in sequence. The bending wheel 15 is subjected to multi-directional extrusion and guidance, gradually forming a hyperbolic arc shape as required by the design. After being formed, the hyperbolic aluminum square tube enters the cooling rack 14 area. The cooling motor 26 is started to drive the cooling fan blades 25 to rotate at high speed. At the same time, air enters through the top flow hole 13 and is guided by the protective plate 12 to force the high-temperature workpiece to be cooled by convection, so that it can be quickly shaped and cooled to a safe temperature. The cooled hyperbolic aluminum square tube is picked up at the end of the transfer rack 1, and the arc length, radius of curvature and surface quality are measured to check whether it meets the process standards.

[0048] Secondly, please refer to Figure 8 As shown, according to the first aspect of the above-described embodiment, the present invention also provides an embodiment, a hyperbolic aluminum square tube forming process, comprising the following steps: Step 1, billet conveying and limiting: Place the aluminum square tube billet on the conveyor roller 2 of the conveyor frame 1, start the control component, and clamp the billet from both sides through two limiting frames 6 to limit the horizontal displacement of the billet, and convey the billet to the heating station by the conveyor roller 2.

[0049] Step 2, Heating treatment: After the blank enters the heating frame 3, the lifting component is activated to drive the movable seat 19 to descend, so that the heating plate 23 on the movable seat 19 and the heating plate 23 on the fixed seat 7 together clamp and heat the blank from the upper and lower sides to the predetermined molding temperature.

[0050] Step 3, Bending and Forming: The heated blank is transported to the bending station. According to the radius of curvature of the target hyperbolic shape, multiple sets of adjustment components are activated to drive each bending wheel 15 to move to the corresponding preset position, so that the blank is squeezed and bent by multiple bending wheels 15 in sequence to form a hyperbolic arc shape.

[0051] Step 4: Cooling and Shaping: The bent aluminum square tube is transported to the cooling rack 14, the cooling motor 26 is started to drive the cooling fan blades 25 to rotate, and at the same time the cooling airflow is guided through the flow components to flow through the surface of the aluminum square tube for forced convection cooling. After cooling, the finished hyperbolic aluminum square tube is obtained.

[0052] Specifically, in step four, the temperature of the cooling airflow is 20℃~30℃.

[0053] The control method of this invention is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hyperbolic aluminum square tube forming device, comprising a transmission frame (1), a limiting mechanism, a heating mechanism, a tube bending mechanism, and a cooling mechanism, wherein a plurality of transmission rollers (2) are rotatably connected to the transmission frame (1), the limiting mechanism is disposed on the transmission frame (1), the heating mechanism is disposed on the transmission frame (1), the tube bending mechanism is disposed on the transmission frame (1), and the cooling mechanism is disposed on the transmission frame (1), characterized in that: The limiting mechanism includes a control component and a limiting frame (6). A heating frame (3) is fixedly connected to the top side of the transmission frame (1). The control component is located inside the heating frame (3). There are two limiting frames (6), and both limiting frames (6) are located on the control component. The heating mechanism includes a lifting component and a heating plate (23). The lifting component is located inside the heating frame (3). The lifting component is provided with a movable seat (19). A fixed seat (7) is fixedly connected to the bottom of the transmission frame (1). There are two heating plates (23). The two heating plates (23) are respectively installed on the side of the fixed seat (7) and the movable seat (19) that are close to each other. The bending mechanism includes an adjusting component and a bending wheel (15). The adjusting component is provided in multiple sets, and all sets of the adjusting component are provided on the transmission frame (1). The bending wheel (15) is provided in multiple sets, and each bending wheel (15) is provided on each set of adjusting components. The cooling mechanism includes a flow component and a cooling fan blade (25). A cooling frame (14) is fixedly connected to the top side of the transmission frame (1). A cooling motor (26) is fixedly connected to the top center of the cooling frame (14). The cooling fan blade (25) is fixedly connected to the output end of the cooling motor (26). The flow component is located on the cooling frame (14).

2. The hyperbolic aluminum square tube forming device as described in claim 1, characterized in that: The positioning component includes a positioning synchronization assembly, a pitch motor (4), and a bidirectional threaded rod (5). There are two bidirectional threaded rods (5), both of which are rotatably connected to the top sides of the heating frame (3). The two limiting frames (6) are threadedly connected to the two bidirectional threaded rods (5). The pitch motor (4) is fixedly connected to one side of the outer surface of the heating frame (3), and the output end of the pitch motor (4) is fixedly connected to one end of one of the bidirectional threaded rods (5). The positioning synchronization assembly is located on the two bidirectional threaded rods (5).

3. The hyperbolic aluminum square tube forming device as described in claim 1, characterized in that: The position control synchronization component includes a pitch-adjustable synchronization belt (18) and a pitch-adjustable synchronization gear (17). There are two pitch-adjustable synchronization gears (17), and each pitch-adjustable synchronization gear (17) is fixedly connected to one end of each bidirectional threaded rod (5). The pitch-adjustable synchronization belt (18) is sleeved on the two pitch-adjustable synchronization gears (17), and the pitch-adjustable synchronization belt (18) meshes with the two pitch-adjustable synchronization gears (17).

4. The hyperbolic aluminum square tube forming device as described in claim 1, characterized in that: The lifting component includes a lifting synchronization assembly, a lifting screw (21), and a lifting motor (22). The heating rack (3) has lifting slots (27) on both sides of its inner wall. There are two lifting screws (21), each of which is rotatably connected to each lifting slot (27). The two ends of the movable seat (19) are threaded to the two lifting screws (21). The lifting motor (22) is fixedly connected to the heating rack (3), and the output end of the lifting motor (22) is fixedly connected to one end of one of the lifting screws (21). The lifting synchronization assembly is located on the two lifting screws (21).

5. The hyperbolic aluminum square tube forming device as described in claim 1, characterized in that: The lifting synchronization assembly includes a lifting synchronization toothed belt (20) and a lifting synchronization gear (8). There are two lifting synchronization gears (8), each of which is fixedly connected to one end of each lifting screw (21). The lifting synchronization toothed belt (20) is sleeved on the two lifting synchronization gears (8), and the lifting synchronization toothed belt (20) meshes with the two lifting synchronization gears (8).

6. The hyperbolic aluminum square tube forming device as described in claim 1, characterized in that: Each of the adjustment components includes a drive assembly, a slide (10), a movable seat (24), and a mounting column (11). A bent pipe plate (28) is fixedly connected inside the transmission frame (1). The slide (10) is opened inside the bent pipe plate (28). The drive assembly is located inside the slide (10). The movable seat (24) is slidably connected inside the slide (10) and connected to the drive assembly. The mounting column (11) is fixedly connected to the top of the movable seat (24). The bent pipe wheel (15) is installed on the mounting column (11).

7. The hyperbolic aluminum square tube forming device as described in claim 1, characterized in that: The drive assembly includes a tube bending adjustment motor (16) and a tube bending screw (9). The tube bending screw (9) is rotatably connected in the slide groove (10) and is threadedly connected to the moving seat (24). The tube bending adjustment motor (16) is fixedly connected to one side of the outer surface of the transmission frame (1), and the output end of the tube bending adjustment motor (16) is fixedly connected to one end of the tube bending screw (9).

8. The hyperbolic aluminum square tube forming device as described in claim 1, characterized in that: The circulation component includes a protective plate (12) and a circulation hole (13). The protective plate (12) is fixedly connected to the cooling rack (14) near the top, and the circulation hole (13) is opened at the top of the cooling rack (14).

9. A forming process for hyperbolic aluminum square tubes, applied to the processing of a hyperbolic aluminum square tube as described in any one of claims 1-8, characterized in that: Includes the following steps: S1. Blank conveying and limiting: Place the aluminum square tube blank on the conveying roller (2) of the conveying frame (1), start the control component, and clamp the blank from both sides through two limiting frames (6) to limit the horizontal lateral displacement of the blank, and convey the blank to the heating station by the conveying roller (2). S2, Heating treatment: After the blank enters the heating rack (3), the lifting component is activated to drive the movable seat (19) to descend, so that the heating plate (23) on the movable seat (19) and the heating plate (23) on the fixed seat (7) together clamp and heat the blank from the upper and lower sides, heating it to the predetermined molding temperature; S3, Bending and forming: The heated blank is transported to the bending station. According to the radius of curvature of the target hyperbolic shape, multiple sets of adjustment components are activated to drive each bending wheel (15) to move to the corresponding preset position, so that the blank is squeezed and bent by multiple bending wheels (15) in sequence to form a hyperbolic arc shape. S4. Cooling and shaping: The bent aluminum square tube is transported to the cooling rack (14), the cooling motor (26) is started to drive the cooling fan blades (25) to rotate, and the cooling airflow is guided through the flow component to flow through the surface of the aluminum square tube for forced convection cooling. After cooling, the double-curved aluminum square tube is obtained.

10. The forming process for a hyperbolic aluminum square tube according to claim 9, characterized in that, In step S4, the temperature of the cooling airflow is 20°C to 30°C.

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