Integrated forming device for high-precision aluminum profile

Abstract

The application relates to the technical field of aluminum profile extrusion production traction equipment, and discloses an integrated forming device for high-precision aluminum profiles, which comprises a rack, a positioning part and an auxiliary traction part. One end of the rack is provided with a fixing table, and the other end is provided with a discharging table. A preheating cylinder is arranged at the end of the fixing table far from the discharging table. An induction heating module is arranged between the fixing table and the discharging table. A moving table is arranged between the fixing table and the induction heating module. The aluminum profile is clamped by the vacuum generator controlling multiple clamping jaws to work simultaneously. The aluminum profile tension is detected in real time by a clamping jaw sensor. The detection result is fed back to a control panel in the form of an electric signal. The vacuum generator is commanded to provide corresponding negative pressure after calculation by the control panel. The aluminum profile fixed by the clamping jaw is provided with additional traction force. The extrusion outlet flow rate of the aluminum profile is stabilized, so that the yield of the whole profile is improved, and the geometric waste is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of traction equipment for aluminum profile extrusion production, and more particularly to an integrated forming device for high-precision aluminum profiles. Background Technology

[0002] Traction equipment in aluminum alloy profile extrusion production is one of the key pieces of equipment on the production line. It is crucial for ensuring profile quality, improving production efficiency and automation level. Its main responsibility is to provide stable and controllable traction force when the profile is just extruded from the die and is in a high-temperature plastic state, guiding the aluminum profile to move in a straight line and preventing it from bending, twisting or surface scratches due to its own weight, thermal deformation or extrusion speed fluctuations.

[0003] However, the existing technology for extruding aluminum rods has the following inherent defects:

[0004] 1. Existing conventional traction machines are passive or speed preset type, and their response speed cannot match the micro-fluctuations of the extrusion master cylinder speed in real time. This results in the aluminum profile being subjected to uneven tensile stress after demolding. At the end of the extrusion process, the remaining length of the aluminum rod becomes shorter, and the pressure field in the deformation zone becomes unstable, resulting in uneven wall thickness at the end of the aluminum profile.

[0005] 2. Existing technology typically uses a hydraulic mechanism to push the aluminum rod into the induction heating zone. The aluminum rod located in the induction heating zone is difficult to align with the axis of the induction heating hole, which results in the aluminum rod being in an unevenly distributed magnetic field of the induction coil. This leads to a temperature difference in the circumference of the aluminum rod. At the same time, the resistance of the aluminum rod is different at different parts of the cross-section of the extrusion die, resulting in differences in metal flow rate and a tendency to twist, which affects the quality of the final aluminum profile. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a high-precision integrated forming device for aluminum profiles, which solves the problems mentioned in the background technology, such as the circumferential temperature difference of the aluminum rod, the different resistances of the aluminum rod at different parts of the extrusion die section, the tendency to twist, and the uneven tensile stress on the aluminum profile after demolding.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-precision aluminum profile integral forming device includes: a frame, a fixed platform at one end of the frame and a discharge platform at the other end, a preheating cylinder at the end of the fixed platform away from the discharge platform, an induction heating module between the fixed platform and the discharge platform, and a moving platform between the fixed platform and the induction heating module.

[0009] The positioning part is disposed inside the moving platform and includes a plurality of arc-shaped clamping pieces for clamping and positioning.

[0010] An auxiliary traction unit is located at the end of the discharge platform away from the induction heating module. The auxiliary traction unit includes a vacuum generator for providing auxiliary drawing and a steady extrusion environment for the aluminum profile extruded at the end.

[0011] Furthermore, the discharge platform is provided with an extrusion port, and a mold is provided inside the extrusion port. The preheating cylinder, the fixed platform, the moving platform and the induction heating module are all provided with through holes, the axes of the multiple through holes coincide, and an aluminum rod is provided in the through hole.

[0012] The preheating cylinder is equipped with an electromagnetic induction coil and an infrared thermometer, and the moving platform is equipped with an installation cavity, which is equipped with a fixing plate.

[0013] Furthermore, the positioning unit also includes:

[0014] A set of mounting plates rotatably connected to the fixed plate, and the set of mounting plates are respectively arranged on both sides of the fixed plate. A rotating ring is provided between the set of mounting plates. The set of mounting plates is rotatably connected to the fixed plate through the rotating ring. A rotating disk is fixedly connected to the end of the mounting plate away from the fixed plate. Multiple guide grooves are opened on the rotating disk. The multiple guide grooves are distributed on the rotating disk in a circumferential array.

[0015] Each of the multiple arc-shaped clamps is fixedly connected to a limiting slider, and each of the multiple arc-shaped clamps is set in multiple guide grooves through the limiting slider. A connecting rod is fixedly connected to a set of opposing limiting sliders, and a set of hydraulic rods is provided between the set of connecting rods. The two ends of the hydraulic rods are respectively rotatably connected to the set of connecting rods.

[0016] A rotating frame is provided between the rotating disk and the mounting plate. A connecting rod is provided between the rotating frame and multiple limiting sliders. One end of the connecting rod is rotatably connected to the limiting slider, and the other end is rotatably connected to the rotating frame. The rotatable connection parts of the multiple connecting rods and the rotating frame are distributed in a circumferential array on the rotating frame.

[0017] A servo motor is fixedly mounted on the fixed plate, and a drive wheel is coaxially fixedly connected to the output end of the servo motor. The drive wheel and the rotating ring are wound with the same transmission belt.

[0018] Furthermore, the fixed plate, rotating disk, mounting plate, and rotating ring are all provided with round holes corresponding to the through holes of the moving stage.

[0019] Furthermore, an inner coil is coaxially arranged inside the through hole of the induction heating module, and an outer coil is coaxially sleeved outside the inner coil. A set of fixed arms is provided on the outside of the mold, and a set of hydraulic rods is rotatably connected to the induction heating module. The output ends of the set of hydraulic rods are rotatably connected to the set of fixed arms.

[0020] Furthermore, the auxiliary traction unit also includes:

[0021] The mounting frame is fixedly connected to the discharge platform. The vacuum generator is fixedly mounted on the mounting frame. The mounting frame is fixedly mounted with a mounting cylinder. The mounting cylinder is provided with an air chamber II. Multiple fixed cylinders are fixedly connected to one end of the mounting cylinder near the discharge platform. The air chamber II is connected to the fixed cylinders. Each of the multiple fixed cylinders is provided with a telescopic rod.

[0022] The ends of the multiple telescopic rods away from the fixed cylinder are fixedly connected to the same connecting block. The connecting block is set between the discharge platform and the mounting cylinder. The end of the connecting block near the discharge platform is provided with multiple sliding grooves in a circumferential array. Each of the multiple sliding grooves is slidably connected to a sliding block. Each of the multiple sliding blocks is rotatably connected to a gripper. Each of the multiple grippers is rotatably connected to the same connecting disc.

[0023] The connecting block has an air chamber one, and a connecting slider is fixedly connected to the sliding block. Multiple connecting sliders are all arranged in the air chamber one. An air pipe one is provided between the vacuum generator and the air chamber one, and an air pipe two is provided between the vacuum generator and the air chamber two.

[0024] Furthermore, both air pipe one and air pipe two are equipped with air valves, the inner side of the gripper is equipped with a rubber buffer pad and a pressure sensor, and the connecting plate, connecting block and mounting cylinder are all provided with openings corresponding to the extrusion port.

[0025] Furthermore, the frame is equipped with guide rails, on which a linear motor moves. The output end of the linear motor is fixedly connected to the moving platform, and multiple support frames are fixedly connected to the bottom of the frame.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. In this invention, a vacuum generator controls multiple grippers to work simultaneously to clamp the aluminum profile. The tension of the aluminum profile is detected in real time by a gripper sensor, and the detection result is fed back to the control board as an electrical signal. The control board then calculates and commands the vacuum generator to provide a corresponding negative pressure, providing additional traction force to the aluminum profile fixed by the grippers. This ensures that the aluminum profile flows stably at the extrusion outlet, thereby improving the yield of the entire profile and significantly reducing geometric waste.

[0028] 2. In this invention, when the hydraulic rod pushes and pulls the connecting rod, the connecting rod causes the rotating frame to rotate, thereby enabling multiple limit sliders to drive multiple arc-shaped clamping pieces to move synchronously, thus clamping and positioning the aluminum rod. This ensures that the axis of the aluminum rod coincides with the axis of the induction heating hole and the induction coil, so that the axial direction of the aluminum rod is within the uniformly distributed magnetic field of the induction coil, avoiding temperature differences in the circumferential direction of the aluminum rod and providing a good environment for subsequent temperature control.

[0029] 3. This invention adopts multi-segment electromagnetic gradient heating, which is divided into a preheating segment, a gradient heating segment and a uniform temperature segment along the aluminum rod feeding direction. The gradient heating segment adopts an inner and outer double coil structure. According to the cross-sectional diagram of the profile to be extruded, the material flow rate requirements of each part are calculated in advance. By independently controlling the power of the inner and outer coils, a specific radial temperature gradient is formed on the cross-section of the aluminum rod, which facilitates the stable forming of the heated aluminum rod in the subsequent extrusion die. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the high-precision aluminum profile integral forming device proposed in this invention.

[0031] Figure 2 This is another overall structural schematic diagram of the high-precision aluminum profile integral forming device proposed in this invention;

[0032] Figure 3 This is a schematic diagram of the internal positioning part of the moving platform of the high-precision aluminum profile integral forming device proposed in this invention.

[0033] Figure 4 This is a schematic diagram of the positioning part and aluminum rod mounting structure of the integrated forming device for high-precision aluminum profiles proposed in this invention.

[0034] Figure 5 This is a schematic diagram showing the detailed structure of the positioning part of the high-precision aluminum profile integral forming device proposed in this invention;

[0035] Figure 6 This is a schematic diagram of the internal structure of the induction heating module of the high-precision aluminum profile integral forming device proposed in this invention.

[0036] Figure 7 This is a schematic diagram of the auxiliary traction part of the high-precision aluminum profile integral forming device proposed in this invention;

[0037] Figure 8 for Figure 7 Enlarged schematic diagram of part A in the middle.

[0038] Explanation of the labels in the diagram:

[0039] Frame; 11. Fixed platform; 12. Discharge platform; 13. Preheating cylinder; 14. Moving platform; 141. Linear motor; 142. Fixed plate; 15. Induction heating module; 16. Support frame;

[0040] Positioning section; 21. Rotating disk; 211. Guide groove; 22. Arc-shaped clamp; 221. Limiting slider; 23. Servo motor; 231. Drive wheel; 24. Transmission belt; 25. Rotating ring; 26. Rotating frame; 27. Connecting rod; 28. Hydraulic rod one; 281. Connecting rod; 29. ​​Mounting plate;

[0041] Fixed arm; 31. Hydraulic rod two;

[0042] Auxiliary traction unit; 41. Mounting bracket; 42. Vacuum generator; 421. Air pipe one; 422. Air pipe two; 43. Mounting cylinder; 431. Fixing cylinder; 432. Telescopic rod; 44. Connecting block; 45. Air valve; 46. Gripper; 461. Sliding block; 462. Connecting slider; 47. Connecting plate;

[0043] Aluminum rod; 51. Inner coil; 52. Outer coil. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0045] Example 1, please refer to Figures 1 to 7 This is the first embodiment of the present invention. This embodiment provides a high-precision aluminum profile integral forming device, which includes a frame 1, a positioning part 2 and an auxiliary traction part 4. A fixed platform 11 is provided at one end of the frame 1 and a discharge platform 12 is provided at the other end. A preheating cylinder 13 is provided at the end of the fixed platform 11 away from the discharge platform 12. An induction heating module 15 is provided between the fixed platform 11 and the discharge platform 12. A moving platform 14 is provided between the fixed platform 11 and the induction heating module 15.

[0046] The frame 1 is equipped with a guide rail, on which a linear motor 141 moves. The output end of the linear motor 141 is fixedly connected to the moving table 14. Multiple support frames 16 are fixedly connected to the bottom of the frame 1.

[0047] The preheating cylinder 13 is equipped with an electromagnetic induction coil and an infrared thermometer. The moving stage 14 is equipped with an installation cavity, and a fixing plate 142 is installed in the installation cavity. The discharge stage 12 is equipped with an extrusion port, and a mold is installed inside the extrusion port. The preheating cylinder 13, the fixing stage 11, the moving stage 14 and the induction heating module 15 are all equipped with through holes. The axes of multiple through holes coincide, and an aluminum rod 5 is installed in the through holes.

[0048] Usage process: The aluminum rod 5 is preheated by passing through the preheating cylinder 13 along the feeding direction. Then, the linear motor 141 drives the moving table 14 and the aluminum rod 5, which is clamped and positioned by the positioning part 2 inside the moving table 14, to be transported to the induction heating module 15 for gradient heating. Finally, a uniform temperature section is set to uniformly heat the aluminum rod. Each section is controlled by an independently controlled electromagnetic induction coil and an infrared thermometer.

[0049] The aluminum rod 5, which has undergone precise temperature control, is extruded and pushed by an external hydraulic cylinder located at the end of the preheating cylinder 13 away from the moving platform 14. The extruded aluminum profile is first pulled out by a traction device, and the subsequent end aluminum profile is traction compensated by an auxiliary traction unit 4. The six-dimensional force sensor of SATS detects a slight decreasing trend in the tension of the aluminum profile and increases the additional traction force.

[0050] Please see Figures 3 to 5 The positioning part 2 is disposed inside the moving stage 14. The positioning part 2 includes a plurality of arc-shaped clamping pieces 22 for clamping and positioning. The positioning part 2 also includes a set of mounting plates 29 rotatably connected to the fixed plate 142. The set of mounting plates 29 are respectively disposed on both sides of the fixed plate 142. A rotating ring 25 is provided between the set of mounting plates 29. The set of mounting plates 29 is rotatably connected to the fixed plate 142 through the rotating ring 25. A rotating disk 21 is fixedly connected to one end of the mounting plate 29 away from the fixed plate 142. A plurality of guide grooves 211 are provided on the rotating disk 21. The plurality of guide grooves 211 are distributed in a circumferential array on the rotating disk 21.

[0051] Multiple arc-shaped clamps 22 are fixedly connected to limit sliders 221, and multiple arc-shaped clamps 22 are set in multiple guide grooves 211 through limit sliders 221. A connecting rod 281 is fixedly connected to a set of opposing limit sliders 221. A set of hydraulic rods 28 is provided between the set of connecting rods 281, and the two ends of the hydraulic rods 28 are rotatably connected to the set of connecting rods 281 respectively.

[0052] A rotating frame 26 is provided between the rotating disk 21 and the mounting plate 29. A connecting rod 27 is provided between the rotating frame 26 and multiple limiting sliders 221. One end of the connecting rod 27 is rotatably connected to the limiting slider 221, and the other end is rotatably connected to the rotating frame 26. The rotatable connection parts of the multiple connecting rods 27 and the rotating frame 26 are distributed in a circumferential array on the rotating frame 26.

[0053] A servo motor 23 is fixedly mounted on the fixed plate 142. The output end of the servo motor 23 is coaxially fixedly connected to a drive wheel 231. The drive wheel 231 and the rotating ring 25 are wound with the same transmission belt 24. The fixed plate 142, the rotating disk 21, the mounting plate 29 and the rotating ring 25 are all provided with round holes corresponding to the through holes of the moving table 14.

[0054] Usage process: When the aluminum rod 5 enters the moving platform 14, since both ends of the hydraulic rod 28 are rotatably connected to the limiting slider 221 through the connecting rod 281, when the connecting rod 281 is pushed or pulled by the output end of the hydraulic rod 28, the limiting slider 221 rotatably connected to both ends of the hydraulic rod 28 moves in opposite directions. The limiting slider 221 is rotatably connected to the rotating frame 26 through the connecting rod 27.

[0055] Therefore, when a set of limiting sliders 221 move in opposite directions, they push the rotating frame 26 to rotate through a set of connecting rods 27 that are rotatably connected to them. Since the rotation connection points of the connecting rods 27 and the rotating frame 26 are distributed in a circular array, multiple limiting sliders 221 drive multiple arc-shaped clamping pieces 22 to move synchronously, thereby clamping and positioning the aluminum rod 5. This ensures that the axis of the aluminum rod 5 coincides with the axis of the induction heating hole and the induction coil, so that the aluminum rod 5 is axially within a uniformly distributed magnetic field of the induction coil, thus avoiding temperature differences in the circumferential direction of the aluminum rod 5.

[0056] Please see Figure 7 and Figure 8 The auxiliary traction unit 4 is located at the end of the discharge platform 12 away from the induction heating module 15. The auxiliary traction unit 4 includes a vacuum generator 42 for providing auxiliary pulling and a steady extrusion environment for the aluminum profile extruded at the end.

[0057] The auxiliary traction unit 4 also includes: a mounting frame 41 fixedly connected to the discharge platform 12, a vacuum generator 42 fixedly mounted on the mounting frame 41, a mounting cylinder 43 fixedly mounted on the mounting frame 41, an air chamber 2 inside the mounting cylinder 43, a plurality of fixed cylinders 431 fixedly connected to one end of the mounting cylinder 43 near the discharge platform 12, the air chamber 2 communicating with the fixed cylinders 431, and a telescopic rod 432 inside each of the plurality of fixed cylinders 431.

[0058] Multiple telescopic rods 432 are fixedly connected to the same connecting block 44 at the ends away from the fixed cylinder 431. The connecting block 44 is located between the discharge platform 12 and the mounting cylinder 43. Multiple sliding grooves are arranged in a circumferential array on the end of the connecting block 44 near the discharge platform 12. Sliding blocks 461 are slidably connected in each of the multiple sliding grooves. Each of the multiple sliding blocks 461 is rotatably connected to a gripper 46. The multiple grippers 46 are rotatably connected to the same connecting plate 47.

[0059] The connecting block 44 has an air chamber 1, and a connecting slider 462 is fixedly connected to the sliding block 461. Multiple connecting sliders 462 are all set in the air chamber 1. A first air pipe 421 is provided between the vacuum generator 42 and the air chamber 1, and a second air pipe 422 is provided between the vacuum generator 42 and the air chamber 2.

[0060] Air valves 45 are provided on both air pipe 421 and air pipe 422. Rubber buffer pads and pressure sensors are provided on the inner side of the gripper 46. Openings are provided on the connecting plate 47, connecting block 44 and mounting cylinder 43 corresponding to the extrusion port.

[0061] Usage process: The extruded aluminum profile is first pulled out by the traction equipment. The subsequent end aluminum profile is compensated by the auxiliary traction unit 4. The SATS six-dimensional force sensor detects that the tension of the aluminum profile has a slight decreasing trend, and the additional traction force is increased. Here, the SATS six-dimensional force sensor is existing technology and only plays the role of detecting the change in the tension of the aluminum profile. It will not be described in detail.

[0062] When the vacuum generator 42 provides air pressure to the air pipe 421, the positive and negative air pressures cause the connecting slider 462 to extend or retract the air chamber 1. In turn, the slider 461 pushes the gripper 46 to rotate relative to the connecting plate 47. The aluminum profile is clamped by multiple grippers 46 working simultaneously. The tension of the aluminum profile is detected in real time by the SATS six-dimensional force sensor on the gripper 46, and the detection result is fed back to the control board as an electrical signal.

[0063] After calculation by the control board, the vacuum generator 42 is commanded to provide a corresponding negative pressure to the second air pipe 422. The negative pressure is passed through the second air chamber and the inner cavity of the connected fixed cylinder 431, which pulls the telescopic rod 432 back into the inner cavity of the fixed cylinder 431. This ensures that the aluminum profile has a stable flow rate at the extrusion port. Through the combination of source compensation and outlet auxiliary pulling, a steady extrusion environment is provided, so that the extruded aluminum profile, especially the last few meters, has the same dimensional accuracy, wall thickness uniformity and surface quality as the middle section. This improves the yield of the entire profile and greatly reduces geometric waste.

[0064] Example 2, as Figures 1 to 7 As shown, this is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides an induction heating module 15 for an integrated forming device for high-precision aluminum profiles. An inner coil 51 is coaxially arranged in the through hole of the induction heating module 15, and an outer coil 52 is coaxially sleeved on the outside of the inner coil 51. A set of fixed arms 3 is provided on the outside of the mold. A set of hydraulic rods 31 is rotatably connected to the induction heating module 15, and the output ends of the set of hydraulic rods 31 are rotatably connected to the set of fixed arms 3.

[0065] During use, a set of hydraulic rods 31 pushes a set of fixed arms 3 to prevent the aluminum profile formed by extrusion of aluminum rod 5 from passing through the extrusion die. This compensates for the slight deformation of the die and ensures that the aluminum rod 5 is stably formed.

[0066] The preheated and positioned aluminum rod 5 on the moving table 14 is moved into the induction heating module 15 by the linear motor 141. The induction heating module 15 adopts an inner and outer double coil structure. The inner coil 51 focuses on heating the core of the aluminum rod 5, and the outer coil 52 focuses on heating the surface of the aluminum rod 5. According to the cross-sectional diagram of the profile to be extruded, the material flow rate requirements of each part are calculated in advance. By independently controlling the power of the inner and outer coils, a specific radial temperature gradient is formed on the cross-section of the aluminum rod 5. For profiles with large differences in wall thickness, the core temperature of the aluminum rod 5 in the thick-walled area with a slow future flow rate is increased to make it softer, while the surface temperature of the aluminum rod 5 in the thin-walled area with a fast future flow rate is appropriately reduced to increase its flow resistance.

[0067] When the core needs to be hotter in the thick-walled section of the profile, the power of the inner (low-frequency) coil is increased while the power of the outer (high-frequency) coil is maintained or slightly reduced. In this way, the core of the aluminum rod 5 receives a lot of energy, while surface heating is suppressed. Combined with heat conduction, a gradient of "core hot, surface cold" is formed, and finally, short-term heat equalization is achieved in the uniform temperature section to eliminate excessive internal stress.

[0068] When the surface of the aluminum rod 5 needs to be hotter or to prevent overheating in the thin-walled section of the profile, the power of the outer coil 52 (high frequency) can be increased, while the power of the inner coil 51 (low frequency) can be maintained or reduced. In this way, a large amount of heat is applied to the surface, while the core of the aluminum rod 5 is heated less.

[0069] The frequencies of the inner and outer coils are preset and fixed in the system design according to the target aluminum rod diameter and heating depth requirements. During operation, the frequency is usually not changed frequently. Instead, it is mainly controlled in real time by adjusting the power to avoid the aluminum profile extruded from the aluminum rod 5 from twisting when passing through the extrusion die, thus ensuring the quality of the aluminum profile.

[0070] As can be seen from the above, the working principle of this application is as follows:

[0071] Multi-segment electromagnetic gradient heating is adopted, which is divided into a preheating segment, a gradient heating segment and a uniform heating segment along the feeding direction of aluminum rod 5. Each segment is controlled by an independently controlled electromagnetic induction coil and an infrared thermometer. Aluminum rod 5 is first uniformly heated to below the recrystallization temperature (e.g., 350°C) in the preheating segment. When aluminum rod 5 enters the moving table 14, since both ends of hydraulic rod 28 are rotatably connected to limit slider 221 through connecting rod 281, when the connecting rod 281 is pushed and pulled by the output end of a set of hydraulic rod 28, a set of limit sliders 221 rotatably connected to both ends of hydraulic rod 28 moves in opposite directions. The limit sliders 221 are rotatably connected to the rotating frame 26 through connecting rod 27.

[0072] When a set of limit sliders 221 move in opposite directions, they push the rotating frame 26 to rotate through a set of connecting rods 27 that are rotatably connected to them. Since the rotation connection points of the connecting rods 27 and the rotating frame 26 are distributed in a circular array, multiple limit sliders 221 drive multiple arc-shaped clamping pieces 22 to move synchronously, thereby clamping and positioning the aluminum rod 5 and ensuring that the axis of the aluminum rod 5 coincides with the axis of the induction heating hole and the induction coil.

[0073] The preheated and positioned aluminum rod 5 on the moving table 14 is moved into the induction heating module 15 by the linear motor 141. The induction heating module 15 adopts an inner and outer double coil structure. The inner coil 51 focuses on heating the core of the aluminum rod 5, and the outer coil 52 focuses on heating the surface of the aluminum rod 5. According to the cross-sectional diagram of the profile to be extruded, the material flow rate requirements of each part are calculated in advance. By independently controlling the power of the inner and outer coils, a specific radial temperature gradient is formed on the cross-section of the aluminum rod 5.

[0074] During this process, a set of hydraulic rods 31 pushes a set of fixed arms 3 to prevent the aluminum profile formed by extrusion of aluminum rod 5 from passing through the extrusion die, and to compensate for the slight deformation of the die, so as to ensure the stable forming of aluminum rod 5.

[0075] The extruded aluminum profile is first pulled out by a traction device. The subsequent end aluminum profile is compensated by an auxiliary traction unit 4. The six-dimensional force sensor of SATS detects a slight decreasing trend in the tension of the aluminum profile and increases the additional traction force. The six-dimensional force sensor of SATS is existing technology and only serves to detect changes in the tension of the aluminum profile. It will not be described in detail here.

[0076] When the vacuum generator 42 provides air pressure to the air pipe 421, the positive and negative air pressures cause the connecting slider 462 to extend or retract the air chamber 1. In turn, the slider 461 pushes the gripper 46 to rotate relative to the connecting plate 47. The aluminum profile is clamped by multiple grippers 46 working simultaneously. The tension of the aluminum profile is detected in real time by the SATS six-dimensional force sensor on the gripper 46, and the detection result is fed back to the control board as an electrical signal.

[0077] After calculation by the control board, the vacuum generator 42 is commanded to provide a corresponding negative pressure to the second air pipe 422. The negative pressure is passed through the second air chamber and the inner cavity of the connected fixed cylinder 431, which pulls the telescopic rod 432 back into the inner cavity of the fixed cylinder 431, ensuring that the aluminum profile has a stable flow rate at the extrusion outlet. Through the combination of source compensation and outlet auxiliary pulling, a steady extrusion environment is provided.

[0078] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A high-precision aluminum profile integral forming device, characterized in that, include: A frame (1) is provided with a fixed platform (11) at one end and a discharge platform (12) at the other end. A preheating cylinder (13) is provided at the end of the fixed platform (11) away from the discharge platform (12). An induction heating module (15) is provided between the fixed platform (11) and the discharge platform (12). A moving platform (14) is provided between the fixed platform (11) and the induction heating module (15). Positioning part (2), the positioning part (2) is disposed in the moving stage (14), the positioning part (2) includes a plurality of arc-shaped clamping pieces (22) for clamping and positioning. The auxiliary traction unit (4) is located at one end of the discharge platform (12) away from the induction heating module (15). The auxiliary traction unit (4) includes a vacuum generator (42) for providing auxiliary drawing and a steady extrusion environment for the aluminum profile extruded at the end. The discharge platform (12) is provided with an extrusion port, and a mold is provided inside the extrusion port. The preheating cylinder (13), the fixed platform (11), the moving platform (14) and the induction heating module (15) are all provided with through holes. The axes of the multiple through holes coincide, and an aluminum rod (5) is provided inside the through hole. The preheating cylinder (13) is equipped with an electromagnetic induction coil and an infrared thermometer, and the moving platform (14) is equipped with an installation cavity, and the installation cavity is equipped with a fixing plate (142). The positioning part (2) further includes: A set of mounting plates (29) are rotatably connected to the fixed plate (142), and the set of mounting plates (29) are respectively arranged on both sides of the fixed plate (142). A rotating ring (25) is provided between the set of mounting plates (29). The set of mounting plates (29) is rotatably connected to the fixed plate (142) through the rotating ring (25). A rotating disk (21) is fixedly connected to one end of the mounting plate (29) away from the fixed plate (142). A plurality of guide grooves (211) are provided on the rotating disk (21). The plurality of guide grooves (211) are distributed in a circumferential array on the rotating disk (21). Each of the multiple arc-shaped clips (22) is fixedly connected to a limiting slider (221), and each of the multiple arc-shaped clips (22) is set in a multiple guide groove (211) through the limiting slider (221). A connecting rod (281) is fixedly connected to a set of opposing limiting sliders (221). A set of hydraulic rods (28) is provided between the set of connecting rods (281), and the two ends of the hydraulic rods (28) are respectively rotatably connected to the set of connecting rods (281). A rotating frame (26) is provided between the rotating disk (21) and the mounting plate (29). A connecting rod (27) is provided between the rotating frame (26) and a plurality of limiting sliders (221). One end of the connecting rod (27) is rotatably connected to the limiting slider (221), and the other end is rotatably connected to the rotating frame (26). The rotatable connection parts of the plurality of connecting rods (27) and the rotating frame (26) are distributed in a circumferential array on the rotating frame (26). A servo motor (23) is fixedly installed on the fixed plate (142). The output end of the servo motor (23) is coaxially fixedly connected to a drive wheel (231). The drive wheel (231) and the rotating ring (25) are wound with the same transmission belt (24).

2. The high-precision aluminum profile integral forming device according to claim 1, characterized in that, The fixed plate (142), rotating disk (21), mounting plate (29) and rotating ring (25) are all provided with round holes corresponding to the through holes of the moving platform (14).

3. The high-precision aluminum profile integral forming device according to claim 2, characterized in that, The induction heating module (15) has an inner coil (51) coaxially arranged in the through hole, and an outer coil (52) coaxially sleeved on the outside of the inner coil (51). A set of fixed arms (3) is provided on the outside of the mold. A set of hydraulic rods (31) is rotatably connected to the induction heating module (15). The output end of the set of hydraulic rods (31) is rotatably connected to a set of fixed arms (3).

4. The high-precision aluminum profile integral forming device according to claim 1, characterized in that, The auxiliary traction unit (4) also includes: A mounting frame (41) is fixedly connected to the discharge platform (12). The vacuum generator (42) is fixedly mounted on the mounting frame (41). A mounting cylinder (43) is fixedly mounted on the mounting frame (41). An air chamber two is provided inside the mounting cylinder (43). Multiple fixed cylinders (431) are fixedly connected to one end of the mounting cylinder (43) near the discharge platform (12). The air chamber two is connected to the fixed cylinder (431). A telescopic rod (432) is provided inside each of the multiple fixed cylinders (431). The ends of the multiple telescopic rods (432) away from the fixed cylinder (431) are fixedly connected to the same connecting block (44). The connecting block (44) is located between the discharge platform (12) and the mounting cylinder (43). The end of the connecting block (44) near the discharge platform (12) is provided with multiple sliding grooves in a circumferential array. Each of the multiple sliding grooves is slidably connected to a sliding block (461). Each of the multiple sliding blocks (461) is rotatably connected to a gripper (46). Each of the multiple grippers (46) is rotatably connected to the same connecting disc (47). The connecting block (44) is provided with an air chamber one, and a connecting slider (462) is fixedly connected to the sliding block (461). Multiple connecting sliders (462) are all arranged in the air chamber one. An air pipe one (421) is provided between the vacuum generator (42) and the air chamber one, and an air pipe two (422) is provided between the vacuum generator (42) and the air chamber two.

5. The high-precision aluminum profile integral forming device according to claim 4, characterized in that, Air valves (45) are provided on both the first air pipe (421) and the second air pipe (422). A rubber buffer pad and a pressure sensor are provided on the inner side of the gripper (46). Openings are provided on the connecting plate (47), the connecting block (44) and the mounting cylinder (43) corresponding to the extrusion port.

6. The high-precision aluminum profile integral forming device according to claim 1, characterized in that, The frame (1) is provided with a guide rail, and a linear motor (141) moves on the guide rail. The output end of the linear motor (141) is fixedly connected to the moving platform (14), and multiple support frames (16) are fixedly connected to the bottom of the frame (1).

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