Automatic cooling device for hot bending forming of composite material pipe and cooling method of automatic cooling device

Abstract

The invention relates to a composite material pipe hot bending forming automatic cooling device and a cooling method thereof.The composite material pipe hot bending forming automatic cooling device comprises a rotating assembly arranged at the upper end of a rotating arm shaft and suitable for driving a radius adjusting assembly, a lifting assembly and a cooling assembly to rotate; the radius adjusting assembly is connected between the rotating assembly and the lifting assembly and is suitable for adjusting the rotating radius of the lifting assembly and the cooling assembly relative to the rotating arm shaft; the lifting assembly is longitudinally connected between the outer end of the radius adjusting assembly and the cooling assembly and is suitable for adjusting the longitudinal height of the cooling assembly; the cooling assembly is installed on the lifting assembly and provided with a C-shaped cooling hole, the hot bending part of the composite material pipe penetrates through the center of the cooling hole, an opening of the cooling hole faces downwards, a plurality of air blowing pieces are installed in the cooling hole, and when the rotating assembly drives the cooling assembly to rotate, the cooling hole can rotate relative to the composite material pipe along the bending radian of the hot bending part of the composite material pipe. And meanwhile, the multiple air blowing pieces can blow air around the hot bending part of the composite material pipe for cooling, and the cooling efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of aerospace pipe bending machine technology, and in particular to an automatic cooling device and cooling method for hot bending of composite material pipes. Background Technology

[0002] Composite material tubes have become key materials for improving spacecraft performance due to their lightweight, high specific strength, resistance to extreme environments, and excellent design freedom. They are widely used in propulsion system piping, main load-bearing structures, and thermal control systems to meet the harsh challenges of space exploration. Therefore, the product quality of composite material tubes is particularly important.

[0003] Existing composite material pipes require rapid cooling after hot bending to prevent deformation when the pipes soften at high temperatures. Current cooling methods involve blowing air from one direction onto the hot-bent portion of the pipe using a cooling fan or air duct. For example, Chinese utility model patent CN214111451U discloses a hot bending forming device for thermoplastic pipes, including a processing table. A first three-jaw chuck is fixedly connected to the upper wall of the processing table. The processing table has a sliding groove, and a second three-jaw chuck is slidably connected to the inner wall of the sliding groove. A heating device and a limiting plate are fixedly connected to the upper wall of the processing table. The processing table also has a cooling mechanism for cooling the plastic pipe and an air guiding mechanism. This utility model eliminates the need to remove the pipe from the hot bending device and transport it to a cooling device for cooling, thus improving the device's working efficiency.

[0004] In the above scheme, the cooling mechanism uses a cold air blower to spray cold air from multiple nozzles onto the surface of the pipes for cooling. This cooling method has the following problems: ① After the pipe fitting is hot-bent, the circumference of the pipe fitting is in a high-temperature softened state. When the cold air blows towards one direction of the pipe fitting, there are disadvantages such as uneven cooling and slow cooling speed, which can easily cause quality problems such as warping and poor ovality of the pipe fitting. ② Hot bending involves bending a section of the pipe. After the nozzle cools a short section, the position of the nozzle needs to be manually adjusted back and forth. This requires a lot of manual time to cool the pipe, which not only prolongs the pipe processing time and reduces work efficiency, but also makes it easy to cause quality problems such as warping and poor ovality of the pipe due to the slow cooling speed. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide an automatic cooling device and method for hot bending of composite material tubes. This device can automatically rotate along the bending arc of the hot bending section of the composite material tube and automatically perform circumferential air cooling on the composite material tube. This accelerates the cooling speed while ensuring uniform cooling of the hot bending section, significantly improving cooling efficiency and forming quality, increasing production efficiency, reducing manual intervention, and is applicable to composite material tubes with different diameters and bending radii.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A cooling method for an automatic cooling device for hot bending of composite material tubes, characterized in that the automatic cooling device for hot bending of composite material tubes includes a base, a rotating component, a radius adjusting component, a lifting component, and a cooling component; The base is mounted on the pipe bending machine and has a rotating arm shaft on it; The rotating assembly is located at the upper end of the rotating arm shaft; A radius adjustment component is connected and positioned between the rotating component and the lifting component; The lifting assembly is longitudinally connected between the outer end of the radius adjustment assembly and the cooling assembly; The cooling assembly, mounted on the lifting assembly, has C-shaped cooling holes. The hot-bent portion of the composite material tube passes through the center of the cooling hole, the opening of the cooling hole faces downward, and multiple blowers are installed inside the cooling hole. The cooling method includes the following steps: S1: After the composite material tube is hot-bent on the tube bending machine, the rotation radius of the cooling component relative to the rotating arm shaft is adjusted by the radius adjustment component to match the bending radius of the hot-bent part of the composite material tube. S2: Control the lifting component to drive the cooling component down, so that the hot bending part of the composite material tube passes through the center of the cooling hole; S3: Start the rotating component to drive the cooling component to rotate along the curvature of the hot bending section of the composite material tube; at the same time, start the cooling component to make multiple blowers automatically blow air around the composite material tube for cooling. S4: After cooling is complete, stop rotating the component and cooling component, and reset the cooling hole to the position with the opening facing downwards; S5: Control the lifting component to lift the cooling component, the cooling component moves upward, and the composite material tube leaves the cooling hole.

[0007] Preferably, the cooling assembly includes a gearbox and a first servo motor disposed outside the gearbox; the gearbox includes a housing and a gear assembly disposed inside the housing; the gear assembly includes a driving gear, two driven gears and a C-shaped rack, the driving gear is disposed on the upper part of the inner side of the housing, the two driven gears are meshed on the lower sides of the driving gear, and the rack is meshed on the lower ends of the two driven gears. The lower part of the housing is provided with the C-shaped cooling hole; the inner wall of the cooling hole is provided with a C-shaped clamping opening, and the lower end of the clamping opening is provided with notches for the end of the rack to extend out; the clamping opening clamps the two ends of the rack, the part of the rack protruding from the clamping opening is inside the cooling hole and the multiple blowers are fixed on the outer end face; multiple support members are fixed on the housing to support the inner wall of the rack. In step S3, the first servo motor drives the active gear to rotate forward and backward, which in turn drives the two driven gears to rotate forward and backward, and in turn drives the rack to rotate forward and backward at the clamping port, so that multiple blowers surround the hot bending part of the composite material tube to blow air for cooling.

[0008] Preferably, the blower is a duckbill nozzle and there are two of them. The two duckbill nozzles are symmetrically arranged on both sides of the center of the rack. The duckbill nozzles are fixed to the rack by L-shaped mounting plates, and the air outlet of the duckbill nozzles is aligned with the center of the rack's cross-section. In step S3, the rack rotates in both directions, causing the two duckbill nozzles to rotate in both directions within the cooling holes, so that the two duckbill nozzles blow air around the hot bend of the composite material tube for cooling.

[0009] Preferably, the rear edge of the clamping port extends inward with a C-shaped baffle, and the rear surface of the baffle is provided with multiple fixing plates circumferentially. The fixing plates are partially exposed above the baffle and are fixed along the axial direction with an installation shaft. The support is a guide wheel, which is rotatably sleeved on the installation shaft through a first deep groove ball bearing. The guide wheel has an annular groove in the middle, and the inner wall of the rack has a C-shaped protrusion that partially abuts against the annular groove. In step S3, when the rack rotates forward and backward in the clamping port, multiple guide wheels roll and support the rack on the inner wall, and the C-shaped protrusion in the middle of the rack's inner wall abuts against a ring-shaped groove in the middle of the guide wheel.

[0010] Preferably, the cooling assembly further includes a first reducer fixed to the rear end plate of the housing, a first servo motor fixed to the first reducer, the motor shaft of the first servo motor connected to the input end of the first reducer, a connecting shaft passing through the end plate on the output end of the first reducer, a first rotating shaft passing through the drive gear passing out of the housing and connected to the connecting shaft via a coupling; an L-shaped reinforcing plate fixed to the end plate and the housing respectively, the upper end of the reinforcing plate connected to the lifting assembly; The driven gear is a double gear, including a second rotating shaft and a driven large gear and a driven small gear sleeved on the second rotating shaft. The driven large gear meshes with the driving gear, and the driven small gear meshes with the rack. The inner ends of the first rotating shaft and the second rotating shaft are installed in the assembly groove on the inner wall of the housing through a second deep groove ball bearing. Limit nuts are installed on the first rotating shaft and the second rotating shaft. In step S3, the first servo motor acts on the first reducer, and the output of the first reducer drives the driving gear to rotate forward and backward, which in turn drives the two driven large gears to rotate forward and backward, so that the two driven small gears rotate forward and backward, driving the rack to rotate forward and backward on the clamping port; in step S4, the first servo motor acts on the first reducer, driving the rack to reset so that the opening of the cooling hole faces downward.

[0011] Preferably, the lifting assembly includes a cylinder, a guide rail, and a slider; the cylinder is mounted longitudinally on the assembly plate, the assembly plate is connected to the radius adjustment assembly, and the output shaft of the cylinder passes through the assembly plate and is fixed to the upper end of the reinforcing plate; two guide rails are provided and are longitudinally fixed to the outer end face of a vertical plate, and two sliders are provided and are respectively mounted on the two guide rails, with the outer ends of the two sliders fixedly connected to the side wall of the reinforcing plate. In steps S2 and S5, the cylinder action drives the output shaft to extend and retract up and down, thereby moving the reinforcing plate and cooling assembly up and down. At the same time, the two sliders slide up and down on the two guide rails to achieve longitudinal height adjustment of the cooling assembly.

[0012] Preferably, the radius adjustment assembly includes a dovetail slide and adjusting bolts; the dovetail slide includes a dovetail slider and a dovetail slide base, the dovetail slide base is connected to the rotating assembly, the vertical plate is integrally formed with the bottom of the dovetail slider, and the mounting plate is partially fitted and fixed to the upper end of the dovetail slider; the upper end of the dovetail slide base is provided with a dovetail guide rail that cooperates with the dovetail slider, a wedge block is sandwiched between the side wall of the dovetail guide rail and the inner wall of the dovetail slider, and multiple adjusting holes are correspondingly provided on the outer wall of the dovetail slider, and adjusting bolts are screwed into the adjusting holes to press the dovetail slider tightly onto the dovetail guide rail; In step S1, loosen multiple adjusting bolts, manually push and pull the dovetail slider to make it slide relative to the dovetail slide base, and then adjust the rotation radius of the lifting assembly and cooling assembly on the outer end vertical plate of the dovetail slider so that the rotation radius matches the bending radius of the hot bending part of the composite material tube. Tighten multiple adjusting bolts against the wedge block to lock the dovetail slider and the dovetail slide base.

[0013] Preferably, the rotating assembly includes a second servo motor, a second reducer, and a mounting frame; the upper end of the mounting frame has a through hole, and a U-shaped opening is formed on the side wall of the mounting frame, with the end of the dovetail slide extending into the U-shaped opening and positioned below the through hole; the second reducer is longitudinally fixed to the upper end of the mounting frame, and its output end passes through the through hole and is fixedly connected to the end of the dovetail slide; the second servo motor is longitudinally fixed to the upper end of the second servo motor, and the motor shaft of the second servo motor is connected to the input end of the second reducer; In steps S3 and S4, the second servo motor acts on the second reducer, and the output of the second reducer drives the dovetail slide to rotate left and right on the U-shaped opening of the mounting frame, thereby driving the dovetail slider, lifting assembly and cooling assembly to rotate, so that the cooling hole rotates along the bending arc of the hot bending part of the composite material tube.

[0014] Preferably, the lower end of the mounting frame is provided with a connecting hole, and the inner wall of the connecting hole is recessed with a slot; the upper end of the swing arm shaft is provided with a connecting post adapted to be inserted into the connecting hole, and the side wall of the connecting post is provided with a locking block adapted to be inserted into the slot; a supporting step is formed between the connecting post and the swing arm shaft and abuts against the lower end of the mounting frame. In steps S1 to S5, the mounting frame is tightly fitted onto the connecting column, the supporting step supports the mounting frame, and the locking block is located in the locking slot.

[0015] An automatic cooling device for hot bending of composite material tubes, characterized in that: a cooling method is applied to the automatic cooling device for hot bending of composite material tubes as described in any one of the above-mentioned methods.

[0016] The present invention adopts the above technical solution and has the following technical effects: ① This cooling device includes a base, a rotating assembly, a radius adjusting assembly, a lifting assembly, and a cooling assembly. The rotating assembly is mounted on the rotating arm shaft of the base and drives the radius adjusting assembly, lifting assembly, and cooling assembly to rotate together, allowing the cooling assembly to automatically rotate along the bending arc of the hot-bent section of the composite material tube. The radius adjusting assembly is mounted on the output end of the rotating assembly and can adjust the rotation radius of the lifting assembly and the cooling assembly relative to the rotating arm shaft, so that the cooling assembly matches the hot-bending radius (hot-bending arc) of the hot-bending section. The lifting assembly is located at the outer end of the radius adjusting assembly and can automatically adjust the longitudinal height of the cooling assembly, allowing the composite material tube to pass through or detach from the cooling assembly. The cooling assembly, through a gear set, drives two blowers to rotate forward and backward within the cooling holes, automatically circling and cooling the composite material tube. This accelerates the cooling speed while ensuring uniform cooling of the hot-bent section, significantly improving cooling efficiency and forming quality, increasing production efficiency, reducing manual intervention, and is suitable for composite material tubes of different diameters and bending radii.

[0017] ② The drive gear drives two double gears to rotate, which in turn drives the C-shaped rack to rotate. The gear transmission enables the blower to move precisely and smoothly within the C-shaped cooling hole, improving the cooling speed and uniformity. The double gears optimize the transmission ratio and spatial layout, making the structure more compact and the transmission smoother, thus improving assembly accuracy and operational reliability.

[0018] ③ The output section of the rotating component and the cooling component adopts a structure of servo motor and reducer, which systematically improves the accuracy, rigidity, response speed and stability of the rotating component and the cooling component, and improves the rotation efficiency of the rotating component and the surrounding air blowing efficiency of the blower.

[0019] ④ The blower uses a duckbill nozzle, whose flat design enables directional diffusion of airflow, which is beneficial for efficient and uniform cooling of the composite material tube surface.

[0020] ⑤ The radius adjustment component adopts a dovetail slide structure, which ensures precise linear guidance, prevents deviation and swaying in other directions, can withstand forces and torques from all directions, has high rigidity, and ensures motion accuracy and stability.

[0021] ⑥ The vertical position of the cooling component is automatically controlled by a combination of a cylinder and a guide rail slider, which achieves stability and precision in the height adjustment of the cooling component. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the steps of an automatic cooling device and cooling method for hot bending of composite material tubes.

[0023] Figure 2 This is a schematic diagram of the arrangement of an automatic cooling device for hot bending of composite material pipes on a pipe bending machine.

[0024] Figure 3 for Figure 1 Enlarged diagram of point A in the middle.

[0025] Figure 4 This is a three-dimensional structural diagram of an automatic cooling device for hot bending of composite material tubes.

[0026] Figure 5 This is a top view schematic diagram of an automatic cooling device for hot bending of composite material tubes.

[0027] Figure 6 This is an assembly diagram of the rotating component, radius adjustment component, lifting component, and cooling component.

[0028] Figure 7 This is a schematic diagram of the assembly of the second reducer and the dovetail slide base.

[0029] Figure 8 This is a schematic diagram of the assembly of the cylinder and cooling components.

[0030] Figure 9 This is a three-dimensional structural diagram of the cooling component.

[0031] Figure 10 This is a schematic diagram showing the arrangement of the C-shaped cooling holes and C-shaped clamping openings on the casing.

[0032] Figure 11 This is a schematic diagram of the assembly of the gear assembly and the duckbill nozzle.

[0033] Figure 12 This is a schematic diagram of the guide wheel installation on the housing.

[0034] Figure 13 This is a schematic diagram of the three-dimensional structure of a C-shaped rack.

[0035] Figure 14 This is a schematic diagram of the assembly of the duckbill nozzle and the L-shaped mounting plate.

[0036] Figure 15 This is an assembly diagram of the guide wheel, mounting shaft, and fixing plate.

[0037] Figure 16 This is a schematic diagram showing the arrangement of the assembly slots inside the housing.

[0038] Figure 17 This is a schematic diagram showing the arrangement of the notches on the casing.

[0039] Figure 18 This is a three-dimensional structural diagram of the dovetail slide.

[0040] Figure 19 This is a schematic diagram showing the arrangement of the adjustment holes on the dovetail slider.

[0041] Figure 20 This is a schematic diagram showing the arrangement of wedge blocks on the dovetail slide.

[0042] Figure 21 This is a three-dimensional structural diagram of the mounting frame.

[0043] Figure 22 This is a schematic diagram showing the arrangement of the connecting columns on the swing arm shaft. Detailed Implementation

[0044] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more, unless explicitly defined otherwise.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] like Figures 1-22 The automatic cooling device for hot bending of composite material tubes shown includes a base 1, a rotating assembly, a radius adjusting assembly, a lifting assembly, and a cooling assembly; The base 1 is mounted on the pipe bending machine 2, and a rotating arm shaft 3 is mounted on it; The rotating assembly is located at the upper end of the rotating arm shaft 3; A radius adjustment component is connected and positioned between the rotating component and the lifting component; The lifting assembly is longitudinally connected between the outer end of the radius adjustment assembly and the cooling assembly; The cooling assembly, mounted on the lifting assembly, has a C-shaped cooling hole 4. The hot-bent part of the composite material tube 5 passes through the center of the cooling hole. The opening of the cooling hole 4 faces downward. Multiple blowers are installed inside the cooling hole 4. A cooling method for an automatic cooling device for hot bending of composite material tubes includes the following steps: S1: After the composite material tube 5 is hot-bent on the tube bending machine 2, the rotation radius of the cooling component relative to the rotating arm shaft 3 is adjusted by the radius adjustment component so that it matches the bending radius of the hot-bent part of the composite material tube 5. S2: Control the lifting component to drive the cooling component to descend, so that the hot-bent part of the composite material tube 5 passes through the center of the cooling hole 4; S3: Start the rotating component to drive the cooling component to rotate along the curvature of the hot bending section of the composite material tube 5; at the same time, start the cooling component to make multiple blowers automatically blow air around the composite material tube 5 for cooling. S4: After cooling is complete, stop rotating the component and cooling component, and reset the cooling hole 4 to the position with the opening facing downwards; S5: Control the lifting component to lift the cooling component, the cooling component moves upward, and the composite material tube 5 leaves the cooling hole 4.

[0050] In the above technical solution, the cooling device 100 includes a base, a rotating assembly, a radius adjusting assembly, a lifting assembly, and a cooling assembly. The rotating assembly is mounted on the rotating arm shaft of the base and can drive the radius adjusting assembly, the lifting assembly, and the cooling assembly to rotate together, allowing the cooling assembly to automatically rotate along the bending arc of the hot-bent section of the composite material tube. The radius adjusting assembly is mounted on the output end of the rotating assembly and can adjust the rotation radius of the lifting assembly and the cooling assembly relative to the rotating arm shaft, so that the cooling assembly matches the hot-bending radius (hot-bending arc) of the hot-bending section 300. The lifting assembly is located at the outer end of the radius adjusting assembly and can automatically adjust the longitudinal height of the cooling assembly, allowing the composite material tube to pass through or detach from the cooling assembly. The cooling assembly automatically circulates and cools the composite material tube by rotating forward and backward within the cooling holes using multiple air blowers. This accelerates the cooling speed while ensuring uniform cooling of the hot-bent section, significantly improving cooling efficiency and forming quality, increasing production efficiency, reducing manual intervention, and is suitable for composite material tubes of different diameters and bending radii.

[0051] like Figure 4 As shown, the centerline of the hot bending section 300 of the composite material tube forms a fan shape with the pivot shaft, and the hot bending radius of the hot bending section 300 is 200, which matches the rotation radius of the rotating assembly.

[0052] like Figures 6-17 As shown, the cooling assembly includes a gearbox 6 and a first servo motor 51 disposed outside the gearbox 6; the gearbox 6 includes a housing 10 and a gear assembly disposed inside the housing 10; the gear assembly includes a driving gear 7, two driven gears 8 and a C-shaped rack 9, the driving gear 7 is disposed on the upper part of the inner side of the housing 10, the two driven gears 8 are meshed on the lower sides of the driving gear 7, and the rack 9 is meshed on the lower ends of the two driven gears 8; The lower part of the housing 10 is provided with the C-shaped cooling hole 4; the inner wall of the cooling hole 4 is provided with a C-shaped clamping opening 11, and the lower end of the clamping opening 11 is provided with notches 12 for the end of the rack 9 to extend out; the clamping opening 11 clamps the two ends of the rack 9, and the part of the rack 9 protruding from the clamping opening 11 is inside the cooling hole 4 and the multiple blowers are fixed on the outer end face; multiple support members are fixed on the housing 10 to support the inner wall of the rack 9; In step S3, the first servo motor 51 drives the active gear 7 to rotate forward and backward, which in turn drives the two driven gears 8 to rotate forward and backward, which in turn drives the rack 9 to rotate forward and backward around its center on the clamping port 11, so that multiple blowers surround the hot bending part of the composite material tube 5 to blow air for cooling.

[0053] In the above technical solution, the driving gear drives two driven gears to rotate, which in turn drives the C-shaped rack to rotate. The C-shaped rack is formed by an opening in a gear ring. Because of the opening on the C-shaped rack, it rotates forward for a period of time at the clamping port, and then reverses for a period of time, ensuring that the C-shaped rack does not disengage from the driven gears. Multiple support members are provided on the inner side of the C-shaped rack to support it and prevent it from moving downward. The rack and pinion transmission structure enables multiple blower components to move precisely and smoothly around the C-shaped cooling holes, improving the cooling speed and uniformity. The first servo motor control improves the motion accuracy and response speed.

[0054] like Figure 11 and 14 As shown, the blower is a duckbill nozzle 13 and there are two of them. The two duckbill nozzles 13 are radially symmetrically arranged on the rack 9. The duckbill nozzles 13 are fixed on the rack 9 by an L-shaped mounting plate 14. The air outlet of the duckbill nozzle 13 is aligned with the center of the cross section of the rack 9. In step S3, the rack 9 rotates in both directions, causing the two duckbill nozzles 13 to rotate in both directions within the cooling hole 4, so that the two duckbill nozzles 13 blow air around the hot bend of the composite material tube 5 for cooling.

[0055] In the above scheme, the blower is equipped with two nozzles and adopts a duckbill nozzle. Its flat nozzle design enables directional diffusion of airflow, which is beneficial for efficient and uniform cooling of the surface of the composite material tube.

[0056] like Figure 12 , 13 As shown in Figure 15, a C-shaped baffle 15 extends inward from the rear edge of the clamping port 11. Multiple fixing plates 16 are circumferentially arranged on the rear surface of the baffle 15. The fixing plates 16 are partially exposed above the baffle 15 and are fixed along the axial direction with a mounting shaft 17. The support is a guide wheel 18. The guide wheel 18 is rotatably sleeved on the mounting shaft 17 through a first deep groove ball bearing 19. A ring groove is provided in the middle of the guide wheel 18. A C-shaped protrusion 20 protrudes from the middle of the inner wall of the rack 9 and partially abuts against the ring groove. In step S3, when the rack 9 rotates forward and backward on the clamping port 11, multiple guide wheels 18 roll and support the inner wall of the rack 9, and the C-shaped protrusion 20 protruding from the middle of the inner wall of the rack 9 abuts against a ring groove in the middle of the guide wheel 18.

[0057] The C-shaped baffle in the above scheme facilitates the installation of the fixing plate, mounting shaft and guide wheel; in this scheme, four guide wheels are arranged circumferentially, which not only effectively support the inner wall of the C-shaped rack, but also have rolling friction with the C-shaped rack, ensuring that the rack is stable and smooth during movement, reducing vibration and wear, and improving the service life and operational reliability of the device; in addition, the cooperation of the annular groove and the convex strip plays a role in front and rear limiting, ensuring that the C-shaped rack rotates around the composite material tube.

[0058] like Figures 6-9 As shown, the cooling assembly also includes a first reducer 22 fixed on the rear end plate 21 of the housing 10, a first servo motor 51 fixed on the first reducer 22, the motor shaft of the first servo motor 51 connected to the input end of the first reducer 22, a connecting shaft passing through the end plate 21 on the output end of the first reducer 22, and a first rotating shaft passing through the drive gear 7 passing out of the housing 10 and connected to the connecting shaft through a coupling 23; an L-shaped reinforcing plate is fixed to the end plate 21 and the housing 10 respectively, and the upper end of the reinforcing plate 24 is connected to the lifting assembly; like Figure 11 and 16 As shown, the driven gear 8 is a double gear, including a second rotating shaft and a driven large gear 25 and a driven small gear 26 sleeved on the second rotating shaft. The driven large gear 25 meshes with the driving gear 7, and the driven small gear 26 meshes with the rack 9. The inner ends of the first rotating shaft and the second rotating shaft are installed in the assembly groove 28 on the inner wall of the housing 10 through the second deep groove ball bearing 27. Limit nuts 29 are installed on the first rotating shaft and the second rotating shaft. In step S3, the first servo motor 51 acts on the first reducer 22, and the output of the first reducer 22 drives the driving gear 7 to rotate forward and backward, which in turn drives the two driven large gears 25 to rotate forward and backward, so that the two driven small gears 26 rotate forward and backward, driving the rack 9 to rotate forward and backward on the clamping port 11; in step S4, the first servo motor 51 acts on the first reducer 22, driving the rack 9 to reset so that the opening of the cooling hole 4 faces downward.

[0059] In the above scheme, the output structure of the first servo motor and the first reducer systematically improves the accuracy, rigidity, response speed, and stability of the cooling components. Combined with the gear transmission structure, it significantly improves the circumferential blowing efficiency of the duckbill nozzle. Furthermore, the end plate is used for reducer mounting, and the L-shaped reinforcing plate fixes the end plate and the housing together to form a unified structure, resulting in greater structural stability. The driven gear adopts a double gear, which optimizes the transmission ratio, increases the rotational speed, improves the circumferential speed of the C-shaped rack, enhances cooling efficiency, and ensures smooth transmission, improving assembly accuracy and operational reliability, reducing wear issues associated with single-gear use, and extending service life.

[0060] like Figures 6-8As shown, the lifting assembly includes a cylinder 30, a guide rail 31, and a slider 32. The cylinder 30 is longitudinally mounted on an assembly plate 33, which is connected to a radius adjustment assembly. The output shaft 34 of the cylinder 30 passes through the assembly plate 33 and is fixed to the upper end of a reinforcing plate 24. Two guide rails 31 are provided and longitudinally fixed to the outer end face of a vertical plate 35. Two sliders 32 are provided and respectively mounted on the two guide rails 31. The outer ends of the two sliders 32 are fixedly connected to the side wall of the reinforcing plate 24. In steps S2 and S5, the cylinder 30 moves to extend and retract the output shaft 34, thereby moving the reinforcing plate 24 and the cooling assembly up and down. At the same time, the two sliders 32 slide up and down on the two guide rails 31 to achieve vertical height adjustment of the cooling assembly.

[0061] In the above scheme, the vertical position of the cooling component is automatically controlled by a combination of a cylinder and a guide rail slider, which achieves the stability and precision of the height adjustment of the cooling component, so that the hot bending part of the composite material tube can enter or leave the C-shaped cooling hole.

[0062] like Figure 7 As shown in Figures 18-20, the radius adjustment assembly includes a dovetail slide 36 and an adjusting bolt 37. The dovetail slide 36 includes a dovetail slider 38 and a dovetail slide base 39. The dovetail slide base is connected to the rotating assembly. The vertical plate 35 is integrally formed with the bottom of the dovetail slider 38. The mounting plate 33 is partially attached and fixed to the upper end of the dovetail slider 38. The upper end of the dovetail slide base 39 is provided with a dovetail guide rail 40 that cooperates with the dovetail slider 38. A wedge block 41 is sandwiched between the side wall of the dovetail guide rail 40 and the inner wall of the dovetail slider 38. A plurality of adjusting holes 42 are correspondingly provided on the outer wall of the dovetail slider 38. The adjusting bolt 37 is screwed into the adjusting holes 42 to press the dovetail slider 38 onto the dovetail guide rail 40. In step S1, loosen multiple adjusting bolts 37, manually push and pull the dovetail slider 38 to make it slide relative to the dovetail slide base 39, and then adjust the rotation radius of the lifting component and cooling component on the outer end vertical plate 35 of the dovetail slider 38 so that the rotation radius matches the bending radius of the hot bending part of the composite material tube 5. Tighten the multiple adjusting bolts 37 against the wedge block 41 to lock the dovetail slider 38 and the dovetail slide base 39.

[0063] In the above scheme, the radius adjustment component adopts a manual adjustment structure of dovetail slide, which ensures precise linear guidance, prevents offset and wobbling in other directions, has high rigidity, and ensures motion accuracy and stability. The adjustment bolt and wedge block are used to lock and unlock the dovetail slider and dovetail guide rail, ensuring that no displacement occurs during operation.

[0064] like Figure 6 and 7As shown, the rotating assembly includes a second servo motor 43, a second reducer 44, and a mounting frame 45. The upper end of the mounting frame 45 is provided with a through hole 46, and a U-shaped opening is provided on the side wall of the mounting frame 45. The end of the dovetail slide base 39 extends into the U-shaped opening and is located below the through hole 46. The second reducer 44 is longitudinally fixed to the upper end of the mounting frame 45, and its output end passes through the through hole 46 and is fixedly connected to the end of the dovetail slide base 39. The second servo motor 43 is longitudinally fixed to the upper end of the second servo motor 43, and the motor shaft of the second servo motor 43 is connected to the input end of the second reducer 44. In steps S3 and S4, the second servo motor 43 acts on the second reducer 44, and the output of the second reducer 44 drives the dovetail slide base 39 to rotate left and right on the U-shaped opening of the mounting frame 45, thereby driving the dovetail slider 38, the lifting component and the cooling component to rotate, so that the cooling hole 4 rotates along the bending arc of the hot bending part of the composite material tube 5.

[0065] In the above solution, the dovetail slide base is driven to rotate on the U-shaped opening of the mounting frame by the second servo motor and the second reducer. This systematically improves the accuracy, rigidity, response speed and stability of the rotating component, increases the rotation efficiency of the rotating component, and realizes the precise tracking and reciprocating motion of the cooling component along the curvature of the composite material tube, thereby improving the accuracy of the cooling path.

[0066] like Figure 21 and 22 As shown, the lower end of the mounting frame 45 is provided with a connecting hole 47, and the inner wall of the connecting hole 47 is recessed with a slot 48; the upper end of the rotating arm shaft 3 is provided with a connecting post 49 adapted to be inserted into the connecting hole 47, and the side wall of the connecting post 49 is provided with a locking block 50 adapted to be inserted into the slot 48; a supporting step is formed between the connecting post 49 and the rotating arm shaft 3 and abuts against the lower end of the mounting frame 45. In steps S1 to S5, the mounting frame 45 is tightly fitted onto the connecting column 49, the supporting step supports the mounting frame 45, and the locking block 50 is located in the locking groove 48.

[0067] In the above solution, the swing arm shaft supports the mounting frame and is clamped and limited to it, so that the mounting frame is firmly connected to the swing arm shaft and is easy to disassemble and assemble. At the same time, it has good load-bearing capacity and facilitates the operation of the rotating component, the radius adjustment component and the cooling component.

[0068] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A cooling method for an automatic cooling device for hot bending forming of a composite material pipe, characterized by: The automatic cooling device for hot bending of composite material tubes includes a base (1), a rotating assembly, a radius adjusting assembly, a lifting assembly, and a cooling assembly; The base (1) is mounted on the pipe bending machine (2), and a rotating arm shaft (3) is mounted on it. The rotating assembly is located at the upper end of the rotating arm shaft (3); A radius adjustment component is connected and positioned between the rotating component and the lifting component; The lifting assembly is longitudinally connected between the outer end of the radius adjustment assembly and the cooling assembly; The cooling assembly, installed on the lifting assembly, has a C-shaped cooling hole (4). The hot-bent part of the composite material tube (5) passes through the center of the cooling hole. The opening of the cooling hole (4) faces downward. Multiple blowers are installed inside the cooling hole (4). The cooling method includes the following steps: S1: After the composite material tube (5) is hot-bent on the tube bending machine (2), the rotation radius of the cooling component relative to the rotating arm shaft (3) is adjusted by the radius adjustment component so that it matches the bending radius of the hot-bent part of the composite material tube (5). S2: Control the lifting assembly to drive the cooling assembly to descend, so that the hot bending part of the composite material tube (5) passes through the center of the cooling hole (4); S3: Start the rotating assembly to drive the cooling assembly to rotate along the bending arc of the hot bending part of the composite material tube (5); at the same time, start the cooling assembly to make multiple blowers automatically surround the composite material tube (5) to blow air for cooling. S4: After cooling is complete, stop rotating the component and cooling component, and reset the cooling hole (4) to the state with the opening facing down; S5: Control the lifting component to drive the cooling component to rise, the cooling component moves upward, and the composite material tube (5) leaves the cooling hole (4).

2. The cooling method of the automatic cooling device for the hot bending forming of a composite material pipe according to claim 1, characterized in that: The cooling assembly includes a gearbox (6) and a first servo motor (51) disposed outside the gearbox (6); The gearbox (6) includes a housing (10) and a gear assembly disposed within the housing (10); the gear assembly includes a drive gear (7), two driven gears (8) and a C-shaped rack (9), wherein the drive gear (7) is disposed on the upper part of the inner side of the housing (10), the two driven gears (8) are meshed on the lower sides of the drive gear (7), and the rack (9) is meshed on the lower ends of the two driven gears (8); The lower part of the housing (10) is provided with the C-shaped cooling hole (4); the inner wall of the cooling hole (4) is provided with a C-shaped clamping opening (11), and the lower ends of the clamping opening (11) are provided with notches (12) for the end of the rack (9) to extend out; the clamping opening (11) clamps the two ends of the rack (9), and the part of the rack (9) protruding from the clamping opening (11) is inside the cooling hole (4) and the multiple blowers are fixedly provided on the outer end face; multiple support members are fixedly provided on the housing (10) to support the inner wall of the rack (9); In step S3, the first servo motor (51) drives the active gear (7) to rotate forward and backward, which in turn drives the two driven gears (8) to rotate forward and backward, and in turn drives the rack (9) to rotate forward and backward around its center on the clamping port (11), so that multiple blowers surround the hot bending part of the composite material tube (5) to blow air for cooling.

3. The cooling method of the automatic cooling device for hot bending of composite material tubes according to claim 2, characterized in that: The blower is a duckbill nozzle (13) and there are two of them. The two duckbill nozzles (13) are radially symmetrically arranged on the rack (9). The duckbill nozzles (13) are fixed on the rack (9) by an L-shaped mounting plate (14). The air outlet of the duckbill nozzle (13) is aligned with the center of the cross section of the rack (9). In step S3, the rack (9) rotates in both directions, causing the two duckbill nozzles (13) to rotate in both directions within the cooling hole (4), so that the two duckbill nozzles (13) blow air around the hot bending part of the composite material tube (5) for cooling.

4. The cooling method of the automatic cooling device for hot bending of composite material tubes according to claim 2, characterized in that: The rear edge of the clamping opening (11) extends inward with a C-shaped baffle (15). Multiple fixing plates (16) are provided circumferentially on the rear surface of the baffle (15). The fixing plates (16) are partially exposed above the baffle (15) and are fixed along the axial direction with an installation shaft (17). The support is a guide wheel (18). The guide wheel (18) is rotatably sleeved on the installation shaft (17) through a first deep groove ball bearing (19). The guide wheel (18) has a ring groove in the middle. The inner wall of the rack (9) has a C-shaped protrusion (20) that partially abuts against the ring groove. In step S3, when the rack (9) rotates forward and backward on the clamping port (11), multiple guide wheels (18) roll and support the rack (9) on the inner wall. The C-shaped protrusion (20) protruding from the middle of the inner wall of the rack (9) abuts against a ring groove in the middle of the guide wheel (18).

5. The cooling method of the automatic cooling device for hot bending of composite material tubes according to claim 2, characterized in that: The cooling assembly also includes a first reducer (22) fixed on the rear end plate (21) of the housing (10), a first servo motor (51) fixed on the first reducer (22), the motor shaft of the first servo motor (51) connected to the input end of the first reducer (22), the output end of the first reducer (22) is provided with a connecting shaft passing through the end plate (21), the first rotating shaft passing through the drive gear (7) passes out of the housing (10) and is connected to the connecting shaft through the coupling (23); an L-shaped reinforcing plate is fixed to the end plate (21) and the housing (10) respectively, and the upper end of the reinforcing plate (24) is connected to the lifting assembly; The driven gear (8) is a double gear, including a second shaft and a driven large gear (25) and a driven small gear (26) sleeved on the second shaft. The driven large gear (25) meshes with the driving gear (7), and the driven small gear (26) meshes with the rack (9). The inner ends of the first shaft and the second shaft are installed in the assembly groove (28) on the inner wall of the housing (10) through the second deep groove ball bearing (27). Limit nuts (29) are installed on the first shaft and the second shaft. In step S3, the first servo motor (51) acts on the first reducer (22), and the output of the first reducer (22) drives the active gear (7) to rotate forward and backward, thereby driving the two driven large gears (25) to rotate forward and backward, so that the two driven small gears (26) rotate forward and backward, driving the rack (9) to rotate forward and backward on the clamping port (11); in step S4, the first servo motor (51) acts on the first reducer (22), driving the rack (9) to reset so that the opening of the cooling hole (4) faces downward.

6. The cooling method of the automatic cooling device for hot bending of composite material tubes according to claim 5, characterized in that: The lifting assembly includes a cylinder (30), a guide rail (31), and a slider (32); the cylinder (30) is longitudinally mounted on the assembly plate (33), the assembly plate (33) is connected to the radius adjustment assembly, and the output shaft (34) of the cylinder (30) passes through the assembly plate (33) and is fixed to the upper end of the reinforcing plate (24); the guide rail (31) is provided with two rails and is longitudinally fixed to the outer end face of a vertical plate (35), and the slider (32) is provided with two pieces and is respectively mounted on the two guide rails (31), and the outer ends of the two sliders (32) are fixedly connected to the side wall of the reinforcing plate (24); In steps S2 and S5, the cylinder (30) moves to extend and retract the output shaft (34) up and down, thereby moving the reinforcing plate (24) and the cooling assembly up and down. At the same time, the two sliders (32) slide up and down on the two guide rails (31) to achieve vertical height adjustment of the cooling assembly.

7. The cooling method of the automatic cooling device for hot bending of composite material tubes according to claim 6, characterized in that: The radius adjustment assembly includes a dovetail slide (36) and an adjustment bolt (37); the dovetail slide (36) includes a dovetail slider (38) and a dovetail slide base (39), the dovetail slide base is connected to the rotating assembly, the vertical plate (35) is integrally formed with the bottom of the dovetail slider (38), and the assembly plate (33) is partially attached and fixed to the upper end of the dovetail slider (38); the upper end of the dovetail slide base (39) is provided with a dovetail guide rail (40) that cooperates with the dovetail slider (38), a wedge block (41) is sandwiched between the side wall of the dovetail guide rail (40) and the inner wall of the dovetail slider (38), and a plurality of adjustment holes (42) are correspondingly provided on the outer wall of the dovetail slider (38). The adjustment bolt (37) is screwed into the adjustment hole (42) to press the dovetail slider (38) onto the dovetail guide rail (40); In step S1, loosen multiple adjusting bolts (37), manually push and pull the dovetail slider (38) to make it slide relative to the dovetail slide base (39), and then adjust the rotation radius of the lifting component and cooling component on the vertical plate (35) at the outer end of the dovetail slider (38) so that the rotation radius matches the bending radius of the hot bending part of the composite material tube (5). Tighten multiple adjusting bolts (37) against the wedge block (41) to lock the dovetail slider (38) and the dovetail slide base (39).

8. The cooling method of the automatic cooling device for hot bending of composite material tubes according to claim 7, characterized in that: The rotating assembly includes a second servo motor (43), a second reducer (44), and a mounting frame (45); the upper end of the mounting frame (45) is provided with a through hole (46), and a U-shaped opening is provided on the side wall of the mounting frame (45). The end of the dovetail slide base (39) extends into the U-shaped opening and is located below the through hole (46); the second reducer (44) is longitudinally fixed to the upper end of the mounting frame (45), and its output end passes through the through hole (46) and is fixedly connected to the end of the dovetail slide base (39); the second servo motor (43) is longitudinally fixed to the upper end of the second servo motor (43), and the motor shaft of the second servo motor (43) is connected to the input end of the second reducer (44); In steps S3 and S4, the second servo motor (43) acts on the second reducer (44), and the output of the second reducer (44) drives the dovetail slide base (39) to rotate left and right on the U-shaped opening of the mounting frame (45), driving the dovetail slider (38), the lifting component and the cooling component to rotate, so that the cooling hole (4) rotates along the bending arc of the hot bending part of the composite material tube (5).

9. The cooling method of the automatic cooling device for hot bending of composite material tubes according to claim 8, characterized in that: The lower end of the mounting frame (45) is provided with a connecting hole (47), and the inner wall of the connecting hole (47) is recessed with a slot (48); the upper end of the rotating arm shaft (3) is provided with a connecting post (49) adapted to be inserted into the connecting hole (47), and the side wall of the connecting post (49) is provided with a locking block (50) adapted to be inserted into the slot (48); a ring of supporting steps is formed between the connecting post (49) and the rotating arm shaft (3) and abuts against the lower end of the mounting frame (45); In steps S1 to S5, the mounting frame (45) is tightly fitted onto the connecting column (49), the supporting step supports the mounting frame (45), and the locking block (50) is located in the locking groove (48).

10. An automatic cooling device for hot bending of composite material tubes, characterized in that: A cooling method applied to an automatic cooling device for hot bending of composite material tubes according to any one of claims 1 to 9.

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