A double cantilever ball screw tube winding machine for carbon fiber tube production and a method of using the same

Abstract

The application discloses a double-cantilever ball screw pipe winding machine for carbon fiber pipe production and a use method thereof, and relates to the technical field of carbon fiber pipe production equipment. The double-cantilever ball screw pipe winding machine for carbon fiber pipe production comprises a machine table, a lower pressing plate capable of reciprocating linearly and an upper pressing plate arranged above the lower pressing plate, a vice air cylinder with a pressure sensor is symmetrically arranged on the machine table beam, a pressure sensor is matched with the output end of a main air cylinder of the upper pressing plate, an adjustable roller encoder is arranged at the bottom of the lower pressing plate, and an axle encoder is arranged at the connection position of the upper pressing plate and the main air cylinder. Based on the structural characteristics that one end of the taper mold rod is large and the other end is small, the double-pressure sensors of the main air cylinder and the vice air cylinder are used for realizing real-time and accurate detection and stable pressure regulation and control of pipe winding pressure, the roller encoder and the axle encoder are used for collecting the data of the winding stroke and the rotating angle of the upper and lower pressing plates in real time in two directions, and the adaptive matching of the differential stroke parameters of the two ends of the taper mold rod is realized.

Description

Technical Field

[0001] This invention relates to the field of carbon fiber tube production equipment technology, specifically to a double cantilever ball screw tube winding machine for carbon fiber tube production and its usage method. Background Technology

[0002] Carbon fiber tubes, due to their excellent properties such as lightweight, high strength, and high modulus, are widely used in aerospace, sporting goods, and medical devices. In the carbon fiber tube winding process, a tube winding machine is typically used to wind prepreg sheets onto a die. Existing tube winding machines are mainly divided into benchtop and cantilever types. Among them, the cantilever type tube winding machine, with its open structure at one end, facilitates the loading and unloading of the die.

[0003] However, existing technologies have significant limitations when dealing with tapered die rods. Due to the diameter difference at both ends of the die rod, the contact pressure between the upper and lower pressure plates and the die rod surface is uneven during the rolling process, and the linear velocities at both ends of the die rod are inconsistent, easily leading to uneven tube wall thickness, fiber wrinkles, or internal stress concentration. Furthermore, traditional pressure control and stroke detection methods are relatively crude, making it difficult to achieve closed-loop feedback of rolling pressure and precise control of the tube rolling stroke, thus affecting the dimensional accuracy and mechanical property consistency of the finished carbon fiber tubes. Summary of the Invention

[0004] The purpose of this invention is to provide a double cantilever ball screw tube winding machine for carbon fiber tube production and its usage method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a double cantilever ball screw tube winding machine for carbon fiber tube production and its usage method, comprising a machine base, a lower pressure plate, and an upper pressure plate. An auxiliary cylinder is mounted on the machine base, and a pressure sensor is mounted on the output end of the auxiliary cylinder. The lower pressure plate is clamped onto the machine base and can be driven by the machine base to perform a linear reciprocating motion. A roller encoder is mounted on the bottom of the lower pressure plate for detecting the stroke of the lower pressure plate. The upper pressure plate is located above the lower pressure plate and includes a plate body and a main cylinder. The plate body is rotatably connected to the output end of the main cylinder, and the plate body abuts against the output end of the auxiliary cylinder. The main cylinder is fixedly inserted into the machine base. A shaft encoder is mounted on the top of the plate body at the connection between the plate body and the main cylinder for detecting the rotation angle of the plate body. A pressure sensor is mounted on the output end of the main cylinder. During the tube rolling process, the main cylinder and the auxiliary cylinder work together to press down the platen. The prepreg and the die rod are clamped between the lower platen and the platen and move in a relative linear motion. Due to the taper of the die rod, the upper platen will rotate.

[0006] Preferably, the machine platform includes a platform body and a crossbeam. The crossbeam is located above the platform body. The top of the platform body is set in a U-shape. A slide rail is provided at the protruding part of the top of the platform body. The slide rail is fixedly connected to the platform body by bolts. Anti-collision pads are provided at both ends of the slide rail. The anti-collision pads are fixedly connected to the platform body by bolts.

[0007] Preferably, a ball screw is sleeved on the top of the platform, the ball screw is rotatably connected to the platform, a drive motor is fixedly connected to the outside of the platform, and one end of the ball screw is fixedly connected to the output end of the drive motor.

[0008] Preferably, auxiliary cylinders are sleeved near both ends of the crossbeam, the auxiliary cylinders are symmetrically distributed, and pressure rollers are provided at the output ends of the auxiliary cylinders. The pressure rollers are rotatably connected to the auxiliary cylinders. A sleeve hole is opened in the middle part of the crossbeam. A "C"-shaped cantilever arm is fixedly connected to the rear side of the crossbeam. The other end of the cantilever arm is fixedly connected to the rear side of the platform. A control module is connected to the middle part of the front side of the crossbeam.

[0009] Preferably, the lower pressure plate includes a support plate and a bearing plate. The top of the support plate is provided with a support platform, and the bottom of the support plate is fixedly connected with a locking platform. The locking platform is locked onto the top of the slide rail and slidably connected to the slide rail. The bottom of the locking platform is fixedly connected with a kit. The kit is sleeved on the outside of the ball screw and slidably connected to the ball screw. The bottom of the support plate is also connected with a slide rod. A roller encoder is sleeved on the outside of the slide rod. The roller encoder can be adjusted up and down on the slide rod. The bearing plate is fixed to the top of the support platform.

[0010] Preferably, the plate is connected to the output end of the main cylinder via a universal joint, and a horizontal plate is provided on the top of the plate, which is in close contact with the pressure roller.

[0011] A method for using a double cantilever ball screw tube winding machine for carbon fiber tube production includes the following steps:

[0012] S1. Parameter Preset and Calibration: Input taper mold rod dimensions, taper, differential stroke, standard pressure range, and target wall thickness; calibrate the main / auxiliary cylinder pressure sensor, roller encoder, and shaft encoder.

[0013] S2. Workpiece positioning and pressure stabilization: Place the tapered die rod covered with prepreg on the lower pressure plate; the main and auxiliary cylinders press down synchronously, and the dual pressure sensors collect the pressure in real time and control it in a closed loop to stabilize the tube rolling pressure within the preset range. The compaction status and thickness abnormalities are indirectly judged by the pressure.

[0014] S3, Adaptive Fitting: The upper pressure plate finely adjusts the vertical angle according to the taper parameter to fit the gradual curved surface of the mold rod; the shaft encoder records the rotation angle, compares it with the theoretical angle to judge the uniformity of the fit, and predicts the consistency of the thickness distribution.

[0015] S4. Stroke Coordination and Thickness Control: The roller encoder detects the linear stroke of the lower pressure plate in real time, and the shaft encoder detects the rotational stroke of the upper pressure plate in real time; the stroke range is allocated according to the difference between the large and small ends of the taper, and the stroke parameters are dynamically calibrated; through the three-in-one closed loop of detecting pressure, linear stroke and rotational stroke, the uniformity of the pipe thickness is indirectly controlled and judged throughout the process, ensuring that the compaction at both ends of the mold rod is consistent, and solving the problem of uneven wall thickness at both ends of the tapered pipe;

[0016] S5. Composite tube forming: The lower pressure plate reciprocates linearly, while the upper pressure plate rotates horizontally, and the two are coupled to form tubes; the pressure and stroke are maintained in a closed-loop control throughout the process to uniformly compact the prepreg.

[0017] S6. Reset and discharge: After the stroke and time have reached the target and the process data are stable, the equipment is reset and the finished tapered carbon fiber tube is taken out.

[0018] The technical effects and advantages of this invention are as follows:

[0019] 1. The double cantilever ball screw tube winding machine for carbon fiber tube production and its operation method adopt a dual pressure detection and pressure stabilization structure with main and auxiliary cylinders. The main cylinder provides the core forming pressure, and the two auxiliary cylinders on both sides realize the balance correction on both sides of the upper pressure plate. The dual pressure sensors collect and feedback pressure data in real time and make dynamic fine adjustments, which completely solves the problems of large pressure fluctuation and uneven prepreg compaction in traditional equipment, and greatly improves the forming density and surface flatness of carbon fiber tubes.

[0020] 2. The double cantilever ball screw tube winding machine and its usage method used in the production of carbon fiber tubes are specifically adapted to the structural characteristics of tapered die rods. It innovatively adopts a differentiated stroke matching process, which uses a roller encoder to detect the linear stroke of the lower pressure plate and a shaft encoder to detect the rotational stroke of the upper pressure plate. The two-way data collaborative calibration adaptively compensates for the stroke difference between the large and small ends of the die rod, ensuring that the compaction degree of both ends of the tube is consistent, effectively solving the industry pain points of uneven wall thickness and poor forming accuracy of tapered tubes.

[0021] 3. The double cantilever ball screw tube winding machine used in the production of carbon fiber tubes and its usage method: The upper pressure plate adopts a universal joint rotation connection structure to realize a two-stage composite motion of vertical bonding and horizontal tube rolling. First, the vertical angle is finely adjusted to accurately bond with the tapered mold rod's gradually curved surface to eliminate bonding gaps. Then, the horizontal rotation is coupled with the linear motion of the lower pressure plate, making the tube rolling action more stable and effectively preventing molding defects such as prepreg slippage, wrinkles, and hollowness.

[0022] 4. The double cantilever ball screw tube winding machine used for carbon fiber tube production and its operation method adopt a ball screw + high-precision slide rail transmission structure, and are equipped with dual encoder closed-loop precision detection. The equipment has high motion accuracy and strong operation stability. It can be adapted to the large-scale and standardized production of various specifications of tapered carbon fiber tubes, significantly improving the product qualification rate and production efficiency, and has a wider range of applications. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the machine tool of the present invention;

[0026] Figure 3 This is a structural view of the pressure plate of the present invention;

[0027] Figure 4 This is a schematic diagram of the bottom structure of the lower pressure plate of the present invention;

[0028] Figure 5 This is a schematic diagram of the upper pressure plate of the present invention;

[0029] Figure 6 This is a cross-sectional structural diagram of the upper pressure plate of the present invention;

[0030] Figure 7 This is a system flowchart of the method of using the present invention;

[0031] Figure 8 This is a system flowchart of the method of using the present invention;

[0032] Figure 9 This is a system flowchart of the method of using the present invention.

[0033] In the diagram: 1. Machine base; 11. Platform body; 111. Slide rail; 112. Anti-collision pad; 113. Ball screw; 114. Drive motor; 12. Crossbeam; 121. Auxiliary cylinder; 122. Pressure roller; 123. Sleeve hole; 124. Cantilever arm; 13. Control module;

[0034] 2. Lower pressure plate; 21. Support plate; 211. Support platform; 212. Carding platform; 213. Kit; 214. Slide rod; 215. Roller encoder; 22. Pressure plate;

[0035] 3. Upper pressure plate; 31. Plate body; 311. Horizontal plate; 312. Shaft encoder; 32. Main cylinder. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] This invention discloses a double cantilever ball screw tube winding machine for carbon fiber tube production and its usage method, according to the appendix. Figures 1-9 As shown, the system includes a machine base 1, a lower pressure plate 2, and an upper pressure plate 3. A secondary cylinder 121 is mounted on the machine base 1, and a pressure sensor is installed at the output end of the secondary cylinder 121. The lower pressure plate 2 is snapped onto the machine base 1 and can be driven by the machine base 1 to perform a linear reciprocating motion. A roller encoder 215 is installed at the bottom of the lower pressure plate 2 to detect its stroke. The upper pressure plate 3 is located above the lower pressure plate 2 and includes a plate body 31 and a main cylinder 32. The plate body 31 is rotatably connected to the output end of the main cylinder 32, and the plate body 31 abuts against the output end of the secondary cylinder 121. The main cylinder 32 is fixedly inserted into the machine base 1. A shaft encoder 312 is installed on the top of the plate body 31 at the connection between the plate body 31 and the main cylinder 32 to detect the rotation angle of the plate body 31. A pressure sensor is installed on the output end of the main cylinder 32. During the tube rolling operation, the main cylinder 32 and the auxiliary cylinder 121 cooperate to press down the plate 31. The prepreg and the die rod are clamped between the lower plate 2 and the plate 31 and move in a relative linear motion. Due to the taper of the die rod, the upper plate 3 will rotate horizontally.

[0038] Specifically adapted to the structural characteristics of tapered die rods, an innovative differentiated stroke matching process is adopted. The linear stroke of the lower pressure plate 2 is detected by the roller encoder 215, and the rotational stroke of the upper pressure plate 3 is detected by the shaft encoder 312. The bidirectional data collaborative calibration adaptively compensates for the stroke difference between the large and small ends of the die rod, ensuring that the compaction degree at both ends of the pipe is consistent, effectively solving the industry pain points of uneven wall thickness and poor forming accuracy of tapered pipes.

[0039] Furthermore, the machine platform 1 includes a platform body 11 and a crossbeam 12. The crossbeam 12 is located above the platform body 11. The top of the platform body 11 is set in a "U" shape. A slide rail 111 is provided at the protruding part of the top of the platform body 11. The slide rail 111 is fixedly connected to the platform body 11 by bolts. Anti-collision pads 112 are provided at both ends of the slide rail 111. The anti-collision pads 112 are fixedly connected to the platform body 11 by bolts.

[0040] Furthermore, a ball screw 113 is sleeved on the top of the platform 11, and the ball screw 113 is rotatably connected to the platform 11. A drive motor 114 is fixedly connected to the outside of the platform 11, and one end of the ball screw 113 is fixedly connected to the output end of the drive motor 114. Employing a transmission structure of ball screw 113 and high-precision slide rail 111, coupled with dual encoder closed-loop precision detection, the equipment boasts high motion accuracy and strong operational stability. It is suitable for the large-scale, standardized production of various specifications of tapered carbon fiber tubes, significantly improving product qualification rate and production efficiency, and has a wider range of applications.

[0041] Furthermore, auxiliary cylinders 121 are sleeved near both ends of the crossbeam 12. The auxiliary cylinders 121 are symmetrically distributed, and pressure rollers 122 are provided at the output ends of the auxiliary cylinders 121. The pressure rollers 122 are rotatably connected to the auxiliary cylinders 121. A sleeve hole 123 is opened in the middle of the crossbeam 12. A "C"-shaped cantilever arm 124 is fixedly connected to the rear side of the crossbeam 12. The other end of the cantilever arm 124 is fixedly connected to the rear side of the platform 11. A control module 13 is connected to the middle of the front side of the crossbeam 12. A dual pressure detection and pressure stabilization structure of main cylinder 32 and auxiliary cylinder 121 is adopted. The main cylinder 32 provides the core forming pressure, and the two auxiliary cylinders 121 on both sides realize the balance correction of the upper pressure plate 3. The dual pressure sensors collect and feedback pressure data in real time and dynamically fine-tune, which completely solves the problems of large pressure fluctuation and uneven prepreg compaction in traditional equipment, and significantly improves the forming density and surface flatness of carbon fiber tubes.

[0042] Furthermore, the lower pressure plate 2 includes a support plate 21 and a pressure plate 22. The top of the support plate 21 is provided with a support platform 211, and the bottom of the support plate 21 is fixedly connected with a locking platform 212. The locking platform 212 is locked onto the top of the slide rail 111 and is slidably connected to the slide rail 111. The bottom of the locking platform 212 is fixedly connected with a kit 213.

[0043] It should be emphasized that the kit 213 is sleeved on the outside of the ball screw 113 and is slidably connected to the ball screw 113. The bottom of the support plate 21 is also connected to the slide rod 214. The outside of the slide rod 214 is sleeved with the roller encoder 215. The roller encoder 215 can be adjusted up and down on the slide rod 214. The pressure plate 22 is fixed on the top of the support platform 211.

[0044] It is particularly important to emphasize that the plate 31 is rotatably connected to the output end of the main cylinder 32 via a universal joint. The shaft encoder 312 is fixedly sleeved on the top of the universal joint and rotatably connected to the output end of the main cylinder 32. A horizontal plate 311 is provided on the top of the plate 31, and the horizontal plate 311 is in close contact with the pressure roller 122. The upper pressure plate 3 adopts a universal joint rotatable connection structure to achieve a two-stage composite motion of vertical bonding and horizontal tube rolling. First, the vertical angle is finely adjusted to accurately bond with the tapered mold rod's gradually curved surface, eliminating bonding gaps. Then, the horizontal rotation is coupled with the linear motion of the lower pressure plate 2, making the tube rolling action smoother and effectively preventing molding defects such as prepreg slippage, wrinkles, and hollow areas.

[0045] It is particularly important to emphasize that the method of using a double cantilever ball screw tube winding machine for carbon fiber tube production includes the following steps:

[0046] S1. Equipment Calibration and Parameter Preset: Based on the large end diameter, small end diameter, and fixed taper ratio of the fixed taper straight mold rod, the control module 13 inputs the differential tube rolling stroke threshold between the large and small ends of the mold rod, the standard tube rolling pressure range, the pressure plate movement speed, the forming time, as well as the theoretical thickness of the single-layer prepreg and the target total wall thickness parameters; complete the calibration and zeroing of the roller encoder 215, shaft encoder 312, and the pressure sensors of the main cylinder 32 and the auxiliary cylinder 121 to ensure that all kinds of detection data are accurate and error-free, laying the benchmark for subsequent pressure + rotation stroke + linear stroke to achieve indirect thickness control and uniformity judgment.

[0047] S2. Workpiece Positioning and Dual-Source Pressure Stabilization: The fixed tapered straight mold rod coated with carbon fiber prepreg is stably placed at the center of the bearing plate 22 of the lower pressure plate 2, ensuring that the workpiece is placed flat without deviation. The equipment is started, and the main cylinder 32 drives the plate 31 to descend vertically. The auxiliary cylinders 121, symmetrically distributed at both ends of the crossbeam 12, press down synchronously, and the pressure rollers 122 adhere to the top crossbeam 311 of the plate 31. The pressure sensor at the output end of the main cylinder 32 collects the main forming pressure data, and the pressure sensor at the output end of the auxiliary cylinder 121 collects the balanced pressure data on both sides. The two types of pressure data are fed back to the control module 13 in real time. The control module 13 finely adjusts the extension and retraction of the main cylinder 32 and the auxiliary cylinder 121 in real time to stabilize the pressure in the preset range throughout the tube rolling process, achieving bidirectional pressure balance and stabilization. Constant pressure is a prerequisite for consistent prepreg compaction. Through real-time pressure monitoring, it is possible to indirectly determine whether there are thickness abnormalities such as overpressure thinning or underpressure bulging, providing a core pressure basis for thickness uniformity control.

[0048] S3. Vertical Rotation Adaptive Fitting of Plate 31: Addressing the fixed structural characteristics of the straight mold rod with unequal diameters at both ends and a gradually changing curved surface, the control module 13, based on preset fixed taper parameters, allows plate 31 to rotate vertically relative to the output end of the main cylinder 32 via a universal joint. This adaptively matches the taper structure of the mold rod, ensuring a complete and tight fit between the bottom surface of plate 31 and the outer carbon fiber prepreg of the mold rod. This completely eliminates localized fitting gaps and prevents slippage, misalignment, and hollowing of the prepreg during the tube rolling process. Fitting accuracy directly affects the uniformity of local compaction. The shaft encoder 312 records the rotation angle during the fitting stage in real time and compares it with the theoretical angle of the fixed taper. This indirectly determines whether the fitting gap is uniform, thus predicting the consistency of the thickness distribution.

[0049] S4. Dual encoders work together to adapt to the tapered differential stroke, indirectly controlling and judging thickness uniformity: Based on the fixed motion characteristics of the fixed tapered straight mold rod with a long forming stroke at the large end and a short forming stroke at the small end, the system automatically divides the independent tube-rubbing stroke intervals at both ends of the mold rod; during operation, the roller encoder 215 at the bottom of the lower pressure plate 2, which can be adjusted up and down, accurately detects the displacement, stroke, and speed data of the linear reciprocating motion of the lower pressure plate 2 in real time; the shaft encoder 312 at the connection between the plate body 31 and the main cylinder 32 collects the adaptive rotation angle and rotation stroke data of the plate body 31 in real time; the pressure sensor outputs the compaction pressure data in real time, and interacts with the rotation stroke and linear stroke data in real time to form a three-in-one closed-loop detection system of "pressure + rotation stroke + linear stroke": the axial rubbing frequency is locked by the linear stroke to ensure the rubbing frequency of the large and small ends. The system matches the fixed taper ratio to avoid uneven compaction times and wall thickness differences at both ends due to stroke deviation. By matching the swing amplitude of the taper surface of the mold rod with the rotation stroke, the fitting posture is corrected in real time to ensure that the pressure angle of the prepreg is consistent throughout the entire length, indirectly controlling the radial compaction uniformity. Real-time pressure feedback on the compaction status indicates that the pressure is stable within the preset range, indicating that the prepreg is compacted to a consistent degree and has a uniform thickness. Sudden pressure changes indicate local slippage, lamination, or material shortage, directly identifying thickness anomalies and issuing warnings. The system uses dual encoder data for dynamic calibration and matching of the differentiated stroke parameters at the large and small ends of the mold rod to correct the movement deviation of the pressure plate. Relying on the pressure-stroke collaborative logic, the system indirectly controls and judges the uniformity of the pipe thickness throughout the process, ensuring that the frequency and degree of prepreg rubbing at both ends of the mold rod are uniform, thus solving the problem of uneven wall thickness at both ends of the fixed taper pipe from the root of the process.

[0050] S5. Composite Motion Coupling Tube Rolling Forming: After pressure adaptation and stroke parameter matching are completed, the drive motor 114 drives the ball screw 113 to rotate, causing the lower pressure plate 2 to perform uniform back-and-forth linear reciprocating tube rolling motion along the slide rail 111; at the same time, after the plate 31 completes the initial vertical rotation and bonding, it switches the motion state and performs uniform horizontal rotation motion with the main cylinder 32 as the axis, forming a coupled composite tube rolling action with the linear reciprocating motion of the lower pressure plate 2; throughout the tube rolling process, the pressure sensor continuously dynamically stabilizes and regulates the pressure, the shaft encoder 312 monitors the rotation stroke in real time, and the roller encoder 215 records the linear stroke throughout the process. The three work together in a closed loop to continuously and uniformly compact and wind the carbon fiber prepreg material on the outside of the mold rod, dynamically maintaining process stability and indirectly ensuring the uniformity and stability of thickness until the preset forming process is completed.

[0051] S6. Equipment Reset and Workpiece Unloading: When the tube rolling stroke and operation time both reach the preset standards, and the pressure-rotation stroke-linear stroke coordination data are stable throughout without abnormal fluctuations, and the thickness uniformity and process stability are determined to meet the standards, the system automatically stops the tube rolling action. The main cylinder 32 and the auxiliary cylinder 121 synchronously retract and lift the plate 31. The lower pressure plate 2 returns to the initial position under the drive of the ball screw 113. After the equipment is fully reset, the formed tapered carbon fiber tube is taken out, completing a single tube rolling operation.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A double cantilever ball screw tube winding machine for producing carbon fiber tubes, characterized in that, include: A machine base (1) is provided with an auxiliary cylinder (121), and a pressure sensor is provided at the output end of the auxiliary cylinder (121); The lower pressure plate (2) is snapped onto the machine base (1). The lower pressure plate (2) can be driven by the machine base (1) to make a linear reciprocating motion. A roller encoder (215) is provided at the bottom of the lower pressure plate (2) to detect the stroke of the lower pressure plate (2). The upper pressure plate (3) is located above the lower pressure plate (2) and includes a plate body (31) and a main cylinder (32). The plate body (31) is rotatably connected to the output end of the main cylinder (32). The plate body (31) abuts against the output end of the auxiliary cylinder (121). The main cylinder (32) is fixedly inserted into the machine base (1). A shaft encoder (312) is provided on the top of the plate body (31) and located at the connection between the plate body (31) and the main cylinder (32) for detecting the rotation angle of the plate body (31). A pressure sensor is provided on the output end of the main cylinder (32). When the tube is rolled, the main cylinder (32) and the auxiliary cylinder (121) cooperate to press the lower platen (31). The prepreg and the die rod are clamped between the lower platen (2) and the platen (31) and move in a relative straight line. Due to the taper of the die rod, the upper platen (3) will rotate horizontally.

2. The double cantilever ball screw tube winding machine for producing carbon fiber tubes according to claim 1, characterized in that, The machine platform (1) includes a platform body (11) and a crossbeam (12). The crossbeam (12) is located above the platform body (11). The top of the platform body (11) is set in a "U" shape. A slide rail (111) is provided at the protruding position on the top of the platform body (11). The slide rail (111) is fixedly connected to the platform body (11) by bolts. Anti-collision pads (112) are provided at both ends of the slide rail (111). The anti-collision pads (112) are fixedly connected to the platform body (11) by bolts.

3. The double cantilever ball screw tube winding machine for producing carbon fiber tubes according to claim 2, characterized in that, A ball screw (113) is sleeved on the top of the platform (11), the ball screw (113) is rotatably connected to the platform (11), and a drive motor (114) is fixedly connected to the outside of the platform (11). One end of the ball screw (113) is fixedly connected to the output end of the drive motor (114).

4. The double cantilever ball screw tube winding machine for producing carbon fiber tubes according to claim 2, characterized in that, The crossbeam (12) is fitted with auxiliary cylinders (121) near both ends. The auxiliary cylinders (121) are symmetrically distributed. The output end of the auxiliary cylinder (121) is provided with a pressure roller (122). The pressure roller (122) is rotatably connected to the auxiliary cylinder (121). The crossbeam (12) has a sleeve hole (123) in the middle. The crossbeam (12) is fixedly connected with a "C"-shaped cantilever arm (124) at the rear side. The other end of the cantilever arm (124) is fixedly connected to the rear side of the platform (11). The crossbeam (12) is connected with a control module (13) at the middle of the front side.

5. A double cantilever ball screw tube winding machine for producing carbon fiber tubes according to claim 1, characterized in that, The lower pressure plate (2) includes a support plate (21) and a bearing plate (22). The top of the support plate (21) is provided with a support platform (211), and the bottom of the support plate (21) is fixedly connected with a locking platform (212). The locking platform (212) is locked onto the top of the slide rail (111) and is slidably connected to the slide rail (111). The bottom of the locking platform (212) is fixedly connected with a kit (213).

6. A double cantilever ball screw tube winding machine for producing carbon fiber tubes according to claim 5, characterized in that, The kit (213) is sleeved on the outside of the ball screw (113) and slidably connected to the ball screw (113). The bottom of the support plate (21) is also connected to a slide rod (214). A roller encoder (215) is sleeved on the outside of the slide rod (214). The roller encoder (215) can be adjusted up and down on the slide rod (214). The pressure plate (22) is fixed on the top of the support platform (211).

7. A double cantilever ball screw tube winding machine for producing carbon fiber tubes according to claim 1, characterized in that, The plate (31) is rotatably connected to the output end of the main cylinder (32) via a universal joint. The shaft encoder (312) is fixedly sleeved on the top of the universal joint and rotatably connected to the output end of the main cylinder (32). A horizontal plate (311) is provided on the top of the plate (31), and the horizontal plate (311) is in close contact with the pressure roller (122).

8. A method of using a double cantilever ball screw tube winding machine for carbon fiber tube production according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Parameter preset and calibration: Input the taper mold rod size, taper, differential stroke, standard pressure range, and target wall thickness; calibrate the pressure sensor, roller encoder (215), and shaft encoder (312) of the main cylinder (32) and auxiliary cylinder (121); S2. Workpiece positioning and pressure stabilization: The tapered die rod covered with prepreg is placed on the lower pressure plate (2); the main cylinder (32) and the auxiliary cylinder (121) press down synchronously, and the dual pressure sensors collect the pressure in real time and control it in a closed loop, so that the pressure of the rolled tube is stabilized in the preset range, and the compaction state and thickness abnormality are indirectly judged by the pressure. S3, Adaptive bonding: The upper pressure plate (3) finely adjusts the vertical angle according to the taper parameter to bond the gradual curved surface of the mold rod; the shaft encoder (312) records the rotation angle, compares it with the theoretical angle to judge the bonding uniformity, and predicts the consistency of the thickness distribution; S4. Stroke Coordination and Thickness Control: Roller encoder (215) detects the linear stroke of the lower pressure plate (2) in real time, and shaft encoder (312) detects the rotational stroke of the upper pressure plate (3) in real time; the stroke range is allocated according to the difference between the large and small ends of the taper, and the stroke parameters are dynamically calibrated; by detecting pressure, linear stroke and rotational stroke in a three-in-one closed loop, the uniformity of the pipe thickness is indirectly controlled and judged throughout the process, ensuring that the two ends of the mold rod are compacted in a consistent manner, and solving the problem of uneven wall thickness at both ends of the tapered pipe; S5, Composite Tube Forming: The lower pressure plate (2) moves linearly back and forth, and the upper pressure plate (3) moves horizontally. The two are coupled to form the tube; the pressure and stroke are controlled in a closed loop throughout the process to uniformly compact the prepreg. S6. Reset and discharge: After the stroke and time reach the target and the process data are stable, the equipment is reset and the finished tapered carbon fiber tube is taken out.

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