A carbon fiber pipe winding forming apparatus

Abstract

This invention discloses a carbon fiber tube winding and forming equipment, belonging to the field of carbon fiber tube manufacturing and processing technology. The equipment includes a frame, a feeding assembly, a winding assembly, and a drive assembly. Elastic rolled fabric is mounted on an active winding roller, a passive winding roller, and a main drive roller. The active winding roller is opened, closed, and its spatial position adjusted via an active swing arm mechanism, while the passive winding roller is finely adjusted in height via a passive slider and a passive wedge mechanism. A feeding tray advances the mandrel and bends the elastic rolled fabric, working in conjunction with the active and passive winding rollers to create a winding space. The main drive roller drives the elastic rolled fabric to rotate cyclically, using surface friction to drive the mandrel within the winding space to rotate, thereby densely wrapping and winding the carbon fiber fabric onto the mandrel surface. In summary, by utilizing the flexible wrapping and tension mechanism of the elastic rolled fabric, efficient and dense winding of various regular tubes and complex irregular variable-diameter tubes is achieved, significantly expanding the processing range of formed tubes.

Description

Technical Field

[0001] This invention belongs to the field of carbon fiber tube manufacturing and processing technology, specifically relating to a carbon fiber tube winding and forming equipment. Background Technology

[0002] Carbon fiber tubing, due to its high strength, low density, and excellent corrosion resistance, has been widely used in aerospace, sporting goods, and high-end industrial manufacturing. In traditional carbon fiber tubing production, conventional tube winding machines are typically used for winding and forming. These machines work by using an upper pressure plate to press down on a die rod and the carbon fiber fabric, followed by a lower base plate pushing the material inwards to roll it, thus winding the carbon fiber fabric onto the die rod to form a tubular structure.

[0003] However, because traditional pipe winding machines use a rolling processing mechanism of rigid double-plate clamping and pushing, they are objectively only suitable for winding conventional equal-diameter pipes with very regular geometry. When faced with the need to wind non-equal-diameter tapered pipes that are larger at one end and smaller at the other, the traditional rigid pressure plate structure cannot perform effective rolling processing because it cannot change the clamping distance.

[0004] Similarly, existing traditional equipment is completely inapplicable when dealing with complex and irregular tubes with multiple diameter changes or undulations in the cross-section, such as tubes that are large at both ends and small in the middle or large in the middle and small at both ends. This greatly limits the range of tubes that existing winding and forming equipment can produce, resulting in low processing flexibility and an inability to meet the diverse and flexible processing needs of irregularly shaped carbon fiber tubes. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention aims to provide a technical solution that can solve the above problems.

[0006] This invention provides a carbon fiber tube winding and forming device, including a machine frame, a feeding assembly, a winding assembly, and a drive assembly. The winding assembly includes a passive winding roller and an active winding roller rotatably mounted on the equipment frame, and an elastic rolled fabric sleeved on the passive winding roller and the active winding roller; the active winding roller and the passive winding roller are relatively movable to adjust the relative distance between them. The drive assembly includes a main drive roller mounted on the equipment frame and a main roller drive component for driving the main drive roller to rotate, and the elastic roll fabric is simultaneously sleeved on the main drive roller. The feeding assembly is used to feed the carbon fiber cloth to be wound and the mandrel into the space between the active winding roller and the passive winding roller; the active winding roller, the passive winding roller and the elastic cloth cooperate with each other to form a winding space for accommodating and wrapping the mandrel in a bent state; the elastic cloth rotates cyclically under the drive of the main drive roller to drive the mandrel to rotate in the winding space and wind the carbon fiber cloth around the outer surface of the mandrel.

[0007] Furthermore, the winding assembly also includes an active swing arm and a swing arm cylinder. The active swing arm includes a first swing arm and a second swing arm fixedly connected to each other. The fixed connection between the first swing arm and the second swing arm is rotatably connected to the equipment frame. One end of the swing arm cylinder is hinged to the equipment frame, and the other end is hinged to the free end of the first swing arm. The free end of the second swing arm is rotatably connected to the active winding roller, so as to drive the active winding roller to swing around the fixed connection through the swing arm cylinder, thereby changing the distance between it and the passive winding roller.

[0008] Furthermore: the equipment frame is provided with a passive groove extending in the vertical direction; the winding assembly also includes a passive slider, a passive base, a passive wedge, and a wedge cylinder; the passive slider is slidably engaged in the passive groove, and the passive roll is rotatably connected to the passive slider; the passive base is fixed to the equipment frame and forms a wedge-shaped guide groove with the passive slider, and the passive wedge passes through the wedge-shaped guide groove; one end of the wedge cylinder is hinged to the equipment frame, and the other end is hinged to the passive wedge, for driving the passive wedge to move along the wedge-shaped guide groove to adjust the vertical height of the passive roll.

[0009] Further: The feeding assembly includes a feeding tray, a feeding clamp, and a feeding cylinder; the feeding clamp is fixed to the equipment frame and is provided with a feeding groove, the feeding tray is slidably connected in the feeding groove, and the end of the feeding tray facing the elastic roll is lower in vertical height than the end away from the elastic roll; one end of the feeding cylinder is hinged to the equipment frame, and the other end is hinged to the feeding tray, for driving the feeding tray to move towards or away from the winding space.

[0010] Furthermore: In the initial feeding state, the feeding tray moves towards the elastic roll of fabric under the drive of the feeding cylinder and pushes against the elastic roll of fabric, causing the elastic roll of fabric to bend and deform away from the feeding tray. At the same time, the active roll roller moves towards the passive roll roller under the drive of the swing arm cylinder, so as to cooperate with the elastic roll of fabric to form the winding space.

[0011] Furthermore, the feeding assembly also includes an auxiliary support rod, the two ends of which are fixed to the equipment frame and located below the feeding tray near the winding space, for providing vertical pressure support to the feeding tray.

[0012] Furthermore, the drive assembly also includes a pressing roller, a pressing bracket, and a pressing cylinder; the pressing cylinder is fixed to the equipment frame, the pressing bracket is fixed to the output end of the pressing cylinder, the pressing roller is rotatably connected to the pressing bracket, and applies a pressing force toward the elastic roll cloth sleeved on the main drive roller to increase the friction between the elastic roll cloth and the main drive roller.

[0013] Furthermore, the winding assembly further includes a tensioning assembly, which includes a tensioning wheel, a first tensioning roller, a second tensioning roller, and a tensioning cylinder. The tensioning wheel is rotatably connected to the equipment frame. The first tensioning roller and the second tensioning roller are spaced apart and rotatably connected to the tensioning wheel. The elastic fabric is cross-looped onto the first tensioning roller and the second tensioning roller. One end of the tensioning cylinder is hinged to the equipment frame, and the other end is hinged to the tensioning wheel. The cylinder is used to drive the tensioning wheel to rotate, thereby changing the position of the first tensioning roller and the second tensioning roller relative to the elastic fabric and adjusting the tension of the elastic fabric.

[0014] Furthermore, the winding assembly also includes positioning rollers, which are rotatably connected to the equipment frame and distributed along the moving path of the elastic roll fabric, for limiting and supporting the elastic roll fabric.

[0015] The present invention also provides an operating method for a carbon fiber tube winding and forming equipment, comprising the following steps: The carbon fiber cloth is laid flat on the feeding tray, and the starting end of the carbon fiber cloth is kept flush with the end of the feeding tray that is close to the elastic roll of cloth. Drive the feeding tray to move towards the elastic roll of fabric, so that its end abuts against and continuously pushes the elastic roll of fabric inward to bend it. At the same time, drive the active roll roller to rotate a preset angle towards the passive roll roller, so that the active roll roller, the passive roll roller and the bent elastic roll of fabric together form a winding space. The mandrel is placed into the winding space, so that both the mandrel and the starting end of the carbon fiber cloth are in the winding space and are wrapped by the elastic roll cloth. The main roller drive is activated to drive the main transmission roller to rotate. The cyclic rotation of the elastic rolled cloth drives the mandrel to rotate, continuously winding the carbon fiber cloth onto the outer surface of the mandrel to form a carbon fiber tube. After winding is completed, the elastic roll stops rotating, the active roll roller is driven to rotate in the opposite direction to increase the distance between it and the passive roll roller, and the feeding tray is controlled to move in the opposite direction a preset distance to release the wound carbon fiber tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention significantly expands the processing range for pipe fittings, perfectly adapting to the winding and forming of various irregular pipes. It innovatively utilizes an active winding roller, a passive winding roller, and an elastic fabric sleeved on top of them to create a suspended winding space while the elastic fabric is bent. Due to the excellent tension and elasticity of the elastic fabric itself, it can tightly adhere to the outer surface of the mandrel during winding, flexibly wrapping it and allowing the carbon fiber cloth sandwiched between the mandrel's outer surface and the elastic fabric to simultaneously and densely adhere to the mandrel surface. Therefore, this equipment can not only wind regular pipes but also efficiently wind various complex irregular pipes, such as those with one large end and one small end, those with large ends and a small middle, or those with large middle and small ends.

[0017] 2. The equipment is simple to operate, and the processing diameter of the tubes is flexible and convenient to adjust. By introducing an active winding roller that can change its spatial position, the effective cross-sectional diameter of the suspended winding space can be easily adjusted by regulating the relative distance and spatial position between the active and passive winding rollers, in conjunction with the elastic fabric winding mechanism. This dynamic adjustment mechanism allows the equipment to quickly adapt to the winding processing of mandrels of different diameters and carbon fiber tubes of different finished product specifications, significantly improving the production versatility of a single unit.

[0018] 3. Significantly improves the winding density and final structural quality of the pipe. The drive assembly uses a main roller drive component to rotate the main drive roller, causing the elastic fabric wrapped around it to continuously and stably circulate on the passive and active winding rollers. Furthermore, a clamping cylinder drives a clamping roller to further clamp the elastic fabric on the main drive roller, greatly increasing the friction between the elastic fabric and the main drive roller, effectively preventing slippage during winding. Especially during the initial winding stage of the new mandrel and carbon fiber fabric, this structure can apply a larger winding torque to the mandrel, ensuring that the carbon fiber fabric is wound extremely tightly and densely on the outer surface of the mandrel, eliminating interlayer gaps and improving the mechanical strength of the finished pipe.

[0019] 4. Enhanced system pressure resistance and overall structural durability. During the winding rotation of the elastic fabric onto the mandrel, the elastic fabric also exerts downward pressure on the mandrel, which is simultaneously transmitted to the feeding tray. This invention features an auxiliary support rod fixedly mounted below the feeding tray near the winding space, providing stable anti-deformation support and effectively preventing damage to the feeding clamps or alteration of their intended position due to excessive pressure. This ensures long-term process stability and structural lifespan of the equipment without hindering the feeding tray's infeed and outfeed movement.

[0020] 5. It achieves automatic dynamic tension adjustment and a convenient, efficient, and safe material handling process. The tensioning component in the winding assembly can drive the tensioning swing wheel to rotate via a tensioning cylinder, changing the position of the first and second tensioning rollers relative to the elastic fabric, thereby dynamically adjusting the overall tension of the elastic fabric and ensuring molding quality. After winding, the active winding roller rotates in the opposite direction to increase the distance between itself and the passive winding roller, reopening the winding space. At this time, the elastic fabric can quickly and automatically return to a taut state under its own elasticity. Simultaneously, the feeding tray moves a preset distance away from the winding space and maintains contact with the elastic fabric. This ensures that the processed mandrel and carbon fiber tube are securely positioned in the contact area between the feeding tray and the elastic fabric, facilitating safe and quick material handling and removal for operators.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the driving component of the present invention; Figure 3 This is a schematic diagram of the structure of the pressing roller and pressing bracket of the present invention; Figure 4 This is a schematic diagram of the tensioning component and the active swing arm of the present invention; Figure 5 This is a schematic diagram of the structure of the feeding tray, elastic roll fabric and core mold of the present invention; Figure 6 This is a schematic diagram of the passive slider and passive wedge of the present invention.

[0024] The reference numerals and names in the figure are as follows: 10 Equipment frame; 11 Support plate; 12 Passive chute; 13 Control component; 14 Core mold; 20 Feeding component; 21 Feeding tray; 22 Feeding clamp; 23 Feeding chute; 24 Feeding cylinder; 25 Auxiliary support rod; 30 Winding component; 31 Elastic fabric roll; 32 Positioning roller; 33 Active winding roller; 34 Active swing arm; 35 Swing arm cylinder; 40 Passive winding roller; 41 Passive slider; 42 Passive base; 43 Wedge guide groove; 44 Passive wedge; 45 Wedge cylinder; 50 Tensioning component; 51 Tensioning swing wheel; 52 First tensioning roller; 53 Second tensioning roller; 54 Tensioning cylinder; 60 Drive component; 61 Main drive roller; 62 Main roller drive component; 63 Pressing roller; 64 Pressing bracket; 65 Pressing cylinder. Detailed Implementation

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1 to 6 The present invention provides the following embodiments: I. Example 1 This embodiment provides a carbon fiber tube winding and forming equipment, mainly used for the production and manufacturing of carbon fiber tubes. The equipment includes a frame 10, a feeding assembly 20, a winding assembly 30, and a drive assembly 60. The frame 10 serves as the physical support foundation of the entire equipment, with support plates 11 fixedly connected to its opposite sides to support and fix subsequent functional components. The feeding assembly 20 includes a movable feeding tray 21, specifically used to support the carbon fiber cloth to be wound and the core mandrel 14, and precisely feed them into the winding assembly 30.

[0027] The winding assembly 30 includes an active winding roller 33 and a passive winding roller 40 respectively mounted on the two supporting uprights 11, wherein the active winding roller 33 and the passive winding roller 40 can open and close relative to each other and adjust their spatial positions. An elastic rolled fabric 31, moving in a closed loop, is fitted onto both the passive winding roller 40 and the active winding roller 33. The drive assembly 60 includes a main drive roller 61 and a main roller drive member 62 for providing rotational power. The main drive roller 61 is rotatably connected to the supporting uprights 11, and the main roller drive member 62 is fixedly mounted on the supporting uprights 11, with its power output shaft connected to the main drive roller 61 to drive the main drive roller 61 to rotate continuously. The elastic rolled fabric 31, in addition to being fitted onto both the active winding roller 33 and the passive winding roller 40, extends downwards and is fitted onto the main drive roller 61. Driven by the friction of the main drive roller 61, the elastic rolled fabric 31 continuously rotates in a loop along the path formed by the passive winding roller 40, the active winding roller 33, and the main drive roller 61.

[0028] This embodiment changes the traditional double-rigid-plate clamping and rolling mode. Traditional tube winding machines use an upper pressure plate to apply downward pressure, combined with a lower base plate for propulsion. Due to the physical limitations of rigid contact, this method can only wind tubes of uniform diameter with perfectly regular cross-sections. In this embodiment, the active winding roller 33 and the passive winding roller 40 cooperate with each other, so that the elastic rolled cloth 31 between them, after being pushed and bent by a preset radius by external force, together constructs a completely suspended dynamic winding space. In actual processing, the mandrel 14 is held within this suspended winding space. Because the elastic rolled cloth 31 itself is made of a material with excellent extensibility, high tension, and high surface friction (such as a woven elastic band with a specific elongation rate), it can tightly and seamlessly adhere to the outer surface of the mandrel 14 under external force. This flexible bonding mechanism also causes the carbon fiber cloth clamped between the outer surface of the mandrel 14 and the elastic rolled cloth 31 to simultaneously adhere tightly to the outer surface of the mandrel 14. Driven by the continuous cyclic friction of the elastic fabric roll 31, the carbon fiber cloth rotates synchronously with the mandrel 14, and is then densely wound onto the outer surface of the mandrel 14 to form a carbon fiber tube. Based on the elasticity and deformability of the elastic fabric roll 31, this equipment can not only efficiently wind regular tubes, but also flexibly wind various complex irregular and irregular shaped tubes such as tapered tubes with one end larger than the other, bidirectional tapered tubes with both ends larger than the middle, or drum-shaped tubes with the middle larger than both ends, greatly expanding the processing range of tubes that can be manufactured, and the overall operation process is extremely simple.

[0029] II. Example 2 Based on the above embodiments, this embodiment provides a detailed description of the specific mechanical mechanism in the winding assembly 30 used to adjust the spatial position of the active winding roller 33 and the passive winding roller 40, so as to ensure that the equipment can accurately and dynamically adapt to the diameter or irregular contour of different finished pipes.

[0030] Specifically, the winding assembly 30 also includes an active swing arm 34 and a swing arm cylinder 35 for realizing the relative opening and closing displacement of the active winding roller 33. The active swing arm 34 adopts a double-arm linkage angular structure, which has a first swing arm and a second swing arm fixedly connected to each other at a preset angle. The fixed junction of the first swing arm and the second swing arm is rotatably connected to the support plate 11 through a rotating shaft, thus forming the overall rotation fulcrum of the active swing arm 34. The tail end of the cylinder body of the swing arm cylinder 35 is hinged to the support plate 11, and the piston rod end of its other end is hinged to the free end of the first swing arm through a fisheye joint with multi-degree-of-freedom self-aligning function. The free end of the second swing arm is rotatably connected to the shaft end of the active winding roller 33 through a deep groove ball bearing.

[0031] To ensure synchronous driving and stable force application, a set of identical active swing arms 34 and swing arm cylinders 35 are symmetrically arranged at both ends of the active winding roller 33 along its axial direction. When the swing arm cylinders 35 at both ends synchronously ventilate to drive the piston rod to extend or retract, the piston rod pulls or pushes the first swing arm through the fisheye joint, forcing the entire active swing arm 34 to rotate around its pivot point on the support plate 11. This rotation, in turn, drives the active winding roller 33, mounted at the free end of the second swing arm, to swing synchronously around the pivot point, thereby dynamically changing the relative distance and spatial geometric position between the active winding roller 33 and the passive winding roller 40, thus realizing the construction or release of the winding space. When the active winding roller 33 swings outward and is in an open state, the distance between the two rollers increases, releasing the winding space for feeding or discharging; when the active winding roller 33 swings inward and is in a relatively closed state, the distance between the two rollers decreases, working together to form a tightly wrapped winding space.

[0032] Furthermore, to accommodate mandrels 14 with different base diameters or carbon fiber tubes with different finished wall thicknesses, this embodiment also provides an independent vertical fine-tuning mechanism for the passive winding roller 40. A passive groove 12 extending vertically is provided on the support plate 11 corresponding to the assembly position of the passive winding roller 40. The winding assembly 30 also includes a passive slider 41, a passive base 42, a passive wedge 44, and a wedge cylinder 45. The passive slider 41 is slidably fitted within the passive groove 12, allowing for linear vertical displacement along the groove. The end of the passive winding roller 40 is rotatably connected to the passive slider 41 via a rolling bearing. The passive base 42 is fixedly connected to the support plate 11 and located below the passive slider 41. A laterally extending wedge-shaped guide groove 43 is formed between the top surface of the passive base 42 and the bottom surface of the passive slider 41. The passive wedge 44 has a preset inclined wedge surface and passes through the wedge-shaped guide groove 43. The cylinder body of the wedge cylinder 45 is hinged to the support plate 11, and its piston rod is hinged to the side of the passive wedge 44. During actual adjustment, the wedge cylinder 45 drives the passive wedge 44 to slide horizontally within the wedge-shaped guide groove 43. Utilizing the principle of gradual height variation on the wedge surface, the passive slider 41 is forced to slide up and down within the passive slide groove 12, thereby precisely changing the vertical distance between the passive base 42 and the passive slider 41. This achieves quantitative fine-tuning of the vertical height of the passive winding roller 40, enabling it to work in conjunction with the active winding roller 33 and the feeding plate 21 to precisely construct winding spaces with different center heights and cross-sectional sizes.

[0033] III. Example 3 Based on the aforementioned embodiments, this embodiment further refines the feeding component 20, the driving component 60, and the related auxiliary support and tension optimization mechanisms to ensure the dense winding effect and mechanical life of the equipment under high-load continuous operation.

[0034] In addition to the inclined feeding tray 21, the feeding assembly 20 also includes a feeding clamp 22 and a feeding cylinder 24. The feeding clamp 22 is fixedly connected to the support plate 11 and has a precisely guided feeding groove 23 on its side facing the feeding tray 21. The edge of the feeding tray 21 is slidably connected within the feeding groove 23. To achieve gravity-assisted automatic feeding of the core mold 14, the feeding clamp 22 is intentionally tilted downwards at a preset angle towards the elastic rolled fabric 31 during assembly, so that the end of the feeding tray 21 that is close to the elastic rolled fabric 31 is vertically lower than the other end that is away from the elastic rolled fabric 31. One end of the feeding cylinder 24 is hinged to the support plate 11, and the other end is hinged to the feeding tray 21 through a fisheye joint, to drive the feeding tray 21 smoothly forward or backward along the feeding groove 23 toward the winding space. The feeding structure has two sets symmetrically assembled at opposite ends of the feeding tray 21 to achieve synchronous parallel movement at both ends.

[0035] During the winding process, the cyclically rotating elastic fabric roll 31 applies a high-intensity winding torque to the mandrel 14, and its internal tension inevitably generates a strong downward vertical pressure component. This pressure is synchronously transmitted to the suspended front end of the feeding tray 21 through the mandrel 14. To effectively improve the pressure-bearing capacity of the feeding tray 21 and avoid excessive alternating pressure causing structural damage or positional displacement of the feeding clamp block 22 and slide rail, this embodiment adds a transverse auxiliary support rod 25 directly below the end of the feeding tray 21 near the winding space. The two ends of the auxiliary support rod 25 are rigidly fixed to the support plates 11 on both sides, and are preferably made of high-strength stainless steel square tubing. The top surface of the auxiliary support rod 25 slides in contact with or maintains a small gap with the bottom surface of the feeding tray 21, thereby providing a robust anti-deformation vertical support for the front end of the feeding tray 21 without hindering the linear movement of the feeding tray 21 in and out, greatly ensuring the process stability during processing.

[0036] In terms of driving and tensioning, the two ends of the main drive roller 61 are rotatably connected to the support plate 11 by seated bearings (such as UCF206 seated bearings), with one end exposed and axially fixed with a first gear. The main roller drive component 62 adopts a vertical gear reduction motor (such as a GV32-750W geared motor), and a second gear is installed at its output end. The two gears are connected by a high-strength chain, thereby driving the main drive roller 61 to rotate stably. The surface of the main drive roller 61 preferably adopts a rubber-coated layered cylinder structure to maximize the static friction between it and the elastic rolled fabric 31 and prevent winding slippage.

[0037] To further provide a strong winding torque, the drive assembly 60 is also equipped with a clamping roller 63, a clamping bracket 64, and a clamping cylinder 65 below the main drive roller 61. The clamping cylinder 65 is fixed to the equipment frame 10, the clamping bracket 64 is fixed to the piston end of the clamping cylinder 65, and the clamping roller 63 is rotatably connected to the clamping bracket 64. Through the upward thrust of the clamping cylinder 65, the clamping roller 63 is driven to apply high pressure to the elastic rolled fabric 31 on the main drive roller 61, tightly clamping the elastic rolled fabric 31 between the main drive roller 61 and the clamping roller 63, further preventing slippage under high load and ensuring that sufficient dense winding torque is applied to the material to be wound.

[0038] In addition, to dynamically maintain or change the overall tension of the elastic fabric roll 31, a tensioning component 50 is integrated within the winding assembly 30. The tensioning component 50 includes tensioning swing wheels 51 rotatably mounted on the support plate 11. A first tensioning roller 52 and a second tensioning roller 53 are rotatably mounted between the tensioning swing wheels 51 at a predetermined distance. The elastic fabric roll 31 is wrapped around these two tensioning rollers in a crisscrossing path. An eccentric rotating shaft is provided at the eccentric position of the tensioning swing wheels 51, and the piston rod of the tensioning cylinder 54 is hinged to this eccentric rotating shaft via a fisheye joint. The linear movement of the tensioning cylinder 54 pulls the eccentric rotating shaft, driving the tensioning swing wheels 51 to rotate, thereby changing the spatial path position of the first tensioning roller 52 and the second tensioning roller 53 relative to the elastic fabric roll 31, achieving flexible adjustment of the tension of the elastic fabric roll 31.

[0039] Meanwhile, several sets of positioning rollers 32, rotatably connected by flange-mounted bearings (such as UCFL 203 bearings), are respectively installed on the preset moving paths between the active winding roller 33 and the main drive roller 61, and between the passive winding roller 40 and the tensioning assembly 50, to limit, lift, and flatten the running trajectory of the elastic fabric roll 31. The entire equipment is operated by a fully automatic control unit 13 that integrates a control box, control screen, pneumatic dual unit, pressure gauge, solenoid valve, pressure regulating valve, and motor control module.

[0040] IV. Example 4 This embodiment, based on the carbon fiber tube winding and forming equipment described in the foregoing embodiments, elaborates in detail its complete and closed-loop dynamic processing operation method, specifically including the following steps: In the initial waiting state, the active winding roller 33, driven by the swing arm cylinder 35, is at its extreme position far from the passive winding roller 40. At this time, the elastic fabric roll 31 remains stretched or taut under the positioning of the tensioning component 50. The feeding tray 21 is also in a retracted waiting position far from the elastic fabric roll 31 under the control of the feeding cylinder 24. At this time, the operator or the automatic robot lays the pre-cut carbon fiber cloth flat on the feeding tray 21 and adjusts its position so that the starting front end of the carbon fiber cloth is flush with the end of the feeding tray 21 closest to the elastic fabric roll 31.

[0041] Subsequently, the control component 13 initiates the feeding process. The feeding cylinder 24 smoothly drives the feeding tray 21 forward along the feeding chute 23 toward the elastic rolled fabric 31, so that its suspended lower end first abuts against the taut elastic rolled fabric 31. Under the continuous forward thrust of the feeding cylinder 24, the front end of the feeding tray 21 continues to penetrate, pushing the elastic rolled fabric 31 inward, forcing the elastic rolled fabric 31 to overcome its own tension and bend away from the feeding tray 21. At the same time, the swing arm cylinders 35 on both sides start synchronously and collaboratively, driving the active swing arm 34 to rotate the active winding roller 33 toward the passive winding roller 40 by a preset angle. At this time, the inwardly bent elastic rolled fabric 31, the active winding roller 33, and the passive winding roller 40 dynamically combine in space to jointly construct a suspended winding space in a relatively closed state. As the feeding tray 21 is tilted downwards, the rigid core mold 14 placed on it automatically rolls forward along the surface of the tray under its own gravity and falls smoothly into the winding space. It is in the winding space together with the starting front end of the carbon fiber cloth and is initially surrounded and wrapped by the bent elastic roll cloth 31.

[0042] Next, the control system activates the main roller drive 62. The vertical gear reducer motor drives the main drive roller 61 to rotate at high torque via gears and chains, thereby driving the elastic rolled fabric 31 mounted on it to continuously rotate along the set annular path. During this process, the clamping cylinder 65 actuates, causing the clamping roller 63 to clamp the elastic rolled fabric 31 under high pressure, ensuring lossless power transmission. Due to the high friction of the surface of the elastic rolled fabric 31 and the application of flexible closed-loop tension to the mandrel 14, the rotating elastic rolled fabric 31 drives the mandrel 14 in the winding space to overcome resistance and rotate in place through interfacial friction. As the mandrel 14 continues to rotate, the carbon fiber cloth laid flat on the feeding tray 21 is continuously and densely pulled and wound onto the outer surface of the mandrel 14. During this period, the auxiliary support rod 25 firmly supports the front end of the feeding tray 21, completely offsetting the downward mechanical pressure generated by winding and ensuring the stability of the processing axis.

[0043] Once the carbon fiber cloth is fully wound and reaches the preset number of layers and dense thickness, the main roller drive 62 stops rotating, and the elastic cloth roll 31 stops its cyclic movement. Subsequently, the swing arm cylinder 35 reverses its action, driving the active swing arm 34 to rotate the active winding roller 33 in the opposite direction away from the passive winding roller 40, thereby increasing the distance between the two rollers and reopening the winding space. At this time, the elastic cloth roll 31, which was originally in a bent state, automatically and quickly returns to its initial taut state after losing the limiting effect of the active winding roller 33 and the deep pressing effect of the feeding plate 21, relying on its excellent material elasticity recovery force. While the elastic cloth roll 31 springs open and self-resets, the feeding cylinder 24 drives the feeding plate 21 to retract a preset short distance away from the winding space, but still keeps its front end in contact with the taut elastic cloth roll 31. At this point, the finished carbon fiber tube, along with the internal mandrel 14, is pushed by the elastic force of the taut elastic fabric 31 and supported by the pallet, and is securely positioned within the contact area between the front end of the feeding pallet 21 and the elastic fabric 31. The operator can then safely and conveniently remove the formed carbon fiber tube and mandrel 14 together and transport them away, achieving a perfect physical and logical closed loop in the entire process.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A carbon fiber tube winding and forming equipment, comprising a frame (10), a feeding assembly (20), a winding assembly (30), and a drive assembly (60); characterized in that: The winding assembly (30) includes a passive winding roller (40) and an active winding roller (33) rotatably mounted on the equipment frame (10), and an elastic rolled fabric (31) sleeved on the passive winding roller (40) and the active winding roller (33); the active winding roller (33) and the passive winding roller (40) are movably arranged relative to each other to adjust the relative distance between them; The drive assembly (60) includes a main drive roller (61) mounted on the equipment frame (10) and a main roller drive component (62) for driving the main drive roller (61) to rotate, and the elastic roll fabric (31) is simultaneously sleeved on the main drive roller (61); The feeding assembly (20) is used to feed the carbon fiber cloth to be wound and the mandrel (14) into the space between the active winding roller (33) and the passive winding roller (40); the active winding roller (33), the passive winding roller (40) and the elastic cloth (31) cooperate with each other to form a winding space for accommodating and wrapping the mandrel (14) in a bent state; the elastic cloth (31) rotates cyclically under the drive of the main drive roller (61) to drive the mandrel (14) to rotate in the winding space and to wind the carbon fiber cloth around the outer surface of the mandrel (14).

2. The carbon fiber tube winding and forming equipment according to claim 1, characterized in that, The winding assembly (30) further includes an active swing arm (34) and a swing arm cylinder (35). The active swing arm (34) includes a first swing arm and a second swing arm fixedly connected to each other. The fixed joint of the first swing arm and the second swing arm is rotatably connected to the equipment frame (10). One end of the swing arm cylinder (35) is hinged to the equipment frame (10), and the other end is hinged to the free end of the first swing arm. The free end of the second swing arm is rotatably connected to the active winding roller (33) to drive the active winding roller (33) to swing around the fixed joint through the swing arm cylinder (35) to change the distance between it and the passive winding roller (40).

3. The carbon fiber tube winding and forming equipment according to claim 1, characterized in that, The equipment frame (10) is provided with a passive slide groove (12) extending vertically; the winding assembly (30) also includes a passive slider (41), a passive base (42), a passive wedge (44), and a wedge cylinder (45); the passive slider (41) is slidably fitted in the passive slide groove (12), and the passive roller (40) is rotatably connected to the passive slider (41); the passive base (42) is fixed to the equipment frame (10) and forms a wedge-shaped guide groove (43) between it and the passive slider (41), and the passive wedge (44) passes through the wedge-shaped guide groove (43); one end of the wedge cylinder (45) is hinged to the equipment frame (10), and the other end is hinged to the passive wedge (44), for driving the passive wedge (44) to move along the wedge-shaped guide groove (43) to adjust the vertical height of the passive roller (40).

4. The carbon fiber tube winding and forming equipment according to claim 1, characterized in that, The feeding assembly (20) includes a feeding tray (21), a feeding clamp (22), and a feeding cylinder (24); the feeding clamp (22) is fixed to the equipment frame (10) and is provided with a feeding groove (23); the feeding tray (21) is slidably connected in the feeding groove (23), and the end of the feeding tray (21) facing the elastic roll (31) is lower in vertical height than the end away from the elastic roll (31); one end of the feeding cylinder (24) is hinged to the equipment frame (10), and the other end is hinged to the feeding tray (21), for driving the feeding tray (21) to move toward or away from the winding space.

5. The carbon fiber tube winding and forming equipment according to claim 4, characterized in that, In the initial feeding state, the feeding tray (21) moves towards the elastic roll (31) and pushes against the elastic roll (31) under the drive of the feeding cylinder (24), causing the elastic roll (31) to bend and deform away from the feeding tray (21). At the same time, the active roll roller (33) moves towards the passive roll roller (40) under the drive of the swing arm cylinder (35) to cooperate with the elastic roll (31) to form the winding space.

6. The carbon fiber tube winding and forming equipment according to claim 4, characterized in that, The feeding assembly (20) also includes an auxiliary support rod (25), the two ends of which are fixed to the equipment frame (10) and located below the feeding tray (21) near the winding space, for providing vertical pressure support to the feeding tray (21).

7. The carbon fiber tube winding and forming equipment according to claim 1, characterized in that, The drive assembly (60) further includes a pressing roller (63), a pressing bracket (64), and a pressing cylinder (65); the pressing cylinder (65) is fixed to the equipment frame (10), the pressing bracket (64) is fixed to the output end of the pressing cylinder (65), the pressing roller (63) is rotatably connected to the pressing bracket (64), and applies a pressing force toward the elastic rolled cloth (31) sleeved on the main drive roller (61) to increase the friction between the elastic rolled cloth (31) and the main drive roller (61).

8. The carbon fiber tube winding and forming equipment according to claim 1, characterized in that, The winding assembly (30) further includes a tensioning assembly (50), which includes a tensioning wheel (51), a first tensioning roller (52), a second tensioning roller (53), and a tensioning cylinder (54). The tensioning wheel (51) is rotatably connected to the equipment frame (10). The first tensioning roller (52) and the second tensioning roller (53) are spaced apart and rotatably connected to the tensioning wheel (51). The elastic fabric roll (31) is cross-sleeved on the first tensioning roller (52) and the second tensioning roller (53). One end of the tensioning cylinder (54) is hinged to the equipment frame (10), and the other end is hinged to the tensioning wheel (51). It is used to drive the tensioning wheel (51) to rotate so as to change the position of the first tensioning roller (52) and the second tensioning roller (53) relative to the elastic fabric roll (31), thereby adjusting the tension of the elastic fabric roll (31).

9. The carbon fiber tube winding and forming equipment according to claim 1, characterized in that, The winding assembly (30) also includes a positioning roller (32), which is rotatably connected to the equipment frame (10) and distributed on the moving path of the elastic roll (31) for limiting and supporting the elastic roll (31).

10. An operating method for a carbon fiber tube winding and forming equipment according to any one of claims 1 to 9, characterized in that, Includes the following steps: The carbon fiber cloth is laid flat on the feeding tray (21), and the starting end of the carbon fiber cloth is kept flush with the end of the feeding tray (21) near the elastic roll cloth (31). Drive the feeding tray (21) to move towards the elastic roll (31), so that its end abuts against and continuously pushes the elastic roll (31) inward to bend it. At the same time, drive the active roll roller (33) to rotate at a preset angle towards the passive roll roller (40), so that the active roll roller (33), the passive roll roller (40) and the bent elastic roll (31) together form a winding space. The core mold (14) is placed in the winding space, so that the core mold (14) and the starting end of the carbon fiber cloth are both in the winding space and are wrapped by the elastic roll cloth (31). The main roller drive (62) is started to drive the main drive roller (61) to rotate. The core mold (14) is driven to rotate by the cyclic rotation of the elastic roll cloth (31), and the carbon fiber cloth is continuously wound to the outer surface of the core mold (14) to form a carbon fiber tube. After winding is completed, the elastic roll (31) is controlled to stop rotating, the active roll (33) is driven to rotate in the opposite direction to increase the distance between it and the passive roll (40), and the feeding plate (21) is controlled to move in the opposite direction by a preset distance to release the wound carbon fiber tube.

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