A yarn guiding and tension synchronization control system for wind turbine blades

Abstract

The application belongs to the technical field of guiding and tension control, and particularly relates to a yarn guiding and tension synchronous control system for a wind power blade, which comprises a yarn guiding and tension synchronous control device, a material recycling system and a yarn making system as previous processes of the yarn guiding and tension synchronous control system, and a post-processing process as the yarn guiding and tension synchronous control system and electrically connected with the yarn guiding and tension synchronous control device; the yarn guiding and tension synchronous control device comprises a base and three support plates, a shaft cylinder is rotatably connected between the middle support plate and the right support plate, a guide wheel is connected to the outer side of the shaft cylinder, the guide wheel is three mutually separated guide discs, and a motor is fixedly installed on the left side of the left support plate, so that the yarn guiding and tension control cannot be synchronized in the yarn production process of the recycled wind power blade, and the yarn production quality is reduced.

Description

Technical Field

[0001] This invention belongs to the field of guidance and tension control technology, specifically relating to a yarn guidance and tension synchronization control system for wind turbine blades. Background Technology

[0002] With the rapid development of the global wind power industry, the recycling and reuse of retired wind turbine blades has become a research hotspot in the field of green energy. Preparing recycled yarn from old wind turbine blades and reusing it in the manufacture of wind turbine blades or related composite materials is of great significance for reducing environmental pollution and achieving resource recycling. However, the yarn used in wind turbine blades requires extremely high precision in guidance and constant tension during processing and winding. Existing tension control systems often struggle to achieve high-precision dynamic compensation and multi-path coordinated control when dealing with recycled yarns with large fluctuations in physical properties, thus limiting the application quality of recycled fibers.

[0003] A search revealed a glass fiber sizing machine with a tension control device, publication number CN104153146A, published on November 19, 2014. This patent uses a combination of a sensing device, a central controller, and a tension adjustment device to balance the tension of the glass fibers delivered by each guide roller, thereby improving fabric defects. However, this technical solution mainly targets a single sizing process, and its control logic focuses primarily on the independent adjustment of a single system, lacking a high-level synchronous linkage mechanism between yarns. When processing recycled yarn made from old wind turbine blades, due to the uneven material properties, the feedback response speed and accuracy of this device are insufficient to meet the synchronous consistency requirements under complex guide paths.

[0004] A search revealed a tension control mechanism for a signal cable twisted pair device, with publication number CN120148973B and authorization announcement date of July 11, 2025. This patent achieves synchronized movement of the distance between the tension wheels and guide wheels on both sides through the cooperation of a drive mechanism, an upper and lower synchronous adjustment unit, and a limit unit, solving the problem of poor coordination in traditional mechanisms. However, this technical solution mainly uses mechanical linkage to achieve synchronization. Although it improves the overall adjustment efficiency, its mechanical structure lacks flexibility when facing complex working conditions that require flexible switching between "synchronous control" and "separate independent fine adjustment".

[0005] The aforementioned problems indicate that existing yarn or cable control systems still have significant shortcomings in terms of guiding accuracy, dynamic response, and compatibility between synchronous and independent control. This is particularly true in the specific application scenario of wind turbine blade recycled yarn processing, where it is difficult to guarantee constant yarn tension and precise trajectory during complex guiding processes. Therefore, this invention provides a yarn guiding and tension synchronous control system for wind turbine blades, aiming to improve the synchronous control accuracy of guiding and tension while achieving independent adjustment of the guiding direction, thereby enhancing the processing quality and production efficiency of wind turbine blade recycled yarn. Summary of the Invention

[0006] The purpose of this invention is to provide a yarn guidance and tension synchronization control system for wind turbine blades to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a yarn guiding and tension synchronization control system for wind turbine blades, comprising a yarn guiding and tension synchronization control device. The preceding processes of the yarn guiding and tension synchronization control system are a material recycling system and a yarn making system, and the yarn guiding and tension synchronization control system is a post-processing process, and is electrically connected to the yarn guiding and tension synchronization control device. The yarn guiding and tension synchronization control device includes a base and three support plates. A shaft cylinder is rotatably connected between the middle support plate and the right support plate. A guide wheel is connected to the outer side of the shaft cylinder. The system consists of three separate guide discs. A motor is fixedly mounted on the left side of the left-side support plate, and a sleeve is fixed on the right side. An expansion rod is integrally formed on the inner end of each guide disc, and the expansion rod is slidably connected to the shaft sleeve. A spline shaft is fixed to the output end of the motor. A spline sleeve is fitted onto the outer side of the spline shaft, and a spline rod is connected through the spline sleeve. A ball is integrally formed on the right end of the spline rod. A ball is embedded in the inner end of the expansion rod, and the ball is in contact with the ball. The right side of the spline rod is a threaded portion, and the left side is a spline portion. A threaded hole is opened on the right side of the sleeve, and the sleeve is threadedly connected to the threaded portion of the spline rod through the threaded hole.

[0008] The present invention further explains that the material recycling system is used to dismantle retired blades and purify them through fiber recycling. The fiber recycling and purification adopts a mechanical method and is purified by chopping, hot air separation and sieving. The yarn making system is used to remelt glass fibers and draw, apply sizing agent and bundle them into raw yarn to adapt to high-performance weaving. The spline rod is slidably connected in the shaft cylinder, and the ball is provided with an arc groove in the middle, and the ball is located in the arc groove.

[0009] The present invention further illustrates that the left and right ends of the shaft cylinder are integrally formed with limit plates, and a spring is provided between the inner side of the limit plate and the outer side of the support plate.

[0010] The present invention further illustrates that an electromagnetic block is provided at the connection between the motor and the support plate. The electromagnetic block becomes magnetic when energized, and the spline sleeve is also magnetic, with its magnetic poles opposite to those of the energized electromagnetic block. When the electromagnetic block is energized, the spline sleeve and the spline rod detach and come into contact.

[0011] The present invention further illustrates that the spline rod is internally threaded with a screw rod, the right end of the screw rod is integrally formed with a limiting block, the left end is integrally formed with a spline block, the spline block is located between the spline shaft and the spline rod, and the left side of the limiting block is in contact with the right side of the right support plate.

[0012] The present invention further illustrates that the inner end of the expansion rod is provided with a limit, and the limit is connected to the inner wall of the shaft cylinder by a spring.

[0013] The present invention further illustrates that the ball is rotatably connected within the arc-shaped groove.

[0014] The present invention further illustrates that annular grooves are provided on the inner side of the limiting plate, the left side of the intermediate support plate, and the right side of the right support plate. The left and right ends of the elastic spring are embedded in the annular grooves and are slidably connected to the annular grooves.

[0015] Compared with the prior art, the beneficial effects achieved by this invention are as follows: This invention recycles and reuses retired wind turbine blades, thereby playing a role in energy conservation and environmental protection. The wind turbine blades are recycled by fiber recovery, and purified through chopping, hot air separation and screening. Then, they are drawn, impregnated with sizing agents and bundled into raw yarns, thus adapting them to high-performance weaving. During the production process, the tension of the yarn is controlled to stabilize the yarn traction and winding tension, avoid fiber damage, uneven thickness and strength fluctuations, and ensure the mechanical properties and forming quality of the yarn. At the same time, the yarn is guided by guide wheels to ensure that the yarn runs accurately, without deviation or scratching, throughout the entire process of yarn making, post-processing and winding. This ensures that the yarn is evenly dried and the packaged end face is flat, meeting the requirements of subsequent wind turbine blade weaving, prepreg and main load-bearing structure use. After the tension is adjusted, the guide position needs to be further improved in terms of accuracy. The operator can make precise adjustments to the guide position by energizing the electromagnetic block, while the position of the spline rod remains unchanged and the tension is not affected. It can control the guide and tension simultaneously or control the guide separately, accurately guide the position, is easy to operate, has multiple functions, and uses fewer structures, resulting in low cost. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1This is a schematic diagram of the yarn guiding and tension synchronization control device of the present invention; Figure 2 This is a cross-sectional view of the yarn guiding and tension synchronization control device of the present invention; Figure 3 This is an exploded view of the yarn guiding and tension synchronization control device of the present invention; Figure 4 This is a plan view of the spline sleeve portion and the sphere portion of the present invention; Figure 5 This is a schematic diagram of the location of the annular groove in this invention; Figure 6 This is a schematic diagram of the spline bar structure of the present invention; In the diagram: 1. Base; 2. Support plate; 3. Shaft cylinder; 31. Guide plate; 32. Expansion rod; 33. Ball bearing; 34. Limiting plate; 4. Motor; 41. Splined shaft; 42. Splined sleeve; 43. Splined rod; 44. Ball; 45. Screw; 451. Limiting block; 452. Splined block; 5. Sleeve; 6. Spring; 7. Electromagnetic block. Detailed Implementation

[0017] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-6 The present invention provides a technical solution: a yarn guiding and tension synchronization control system for wind turbine blades, including a yarn guiding and tension synchronization control device. The preceding process of the yarn guiding and tension synchronization control system is a material recycling system and a yarn making system. The yarn guiding and tension synchronization control system is a post-processing process and is electrically connected to the yarn guiding and tension synchronization control device. The yarn guiding and tension synchronization control device includes a base 1 and three support plates 2. A shaft cylinder 3 is rotatably connected between the middle support plate 2 and the right support plate 2. A guide wheel is connected to the outside of the shaft cylinder 3. The guide wheel consists of three separate guide discs 31. A motor 4 is fixedly installed on the left side of the left support plate 2, and a sleeve 5 is fixed on the right side. An expansion rod 32 is integrally formed on the inner end of each guide disc 31, and the expansion rod 32 is slidably connected to the shaft cylinder 3. A spline shaft 41 is fixed to the output end of the motor 4. A spline sleeve 42 is sleeved on the outside of the spline shaft 41, and a spline rod 43 is connected through the spline sleeve 42. A ball 44 is integrally formed on the right end of the spline rod 43. A ball 33 is embedded in the inner end of the expansion rod 32, and the ball 33 contacts the ball 44. The right side of the spline rod 43 is a threaded part, and the left side is a spline part. A threaded hole is opened on the right side of the sleeve 5, and it is threadedly connected to the threaded part of the spline rod 43 through the threaded hole. Recycling retired wind turbine blades for reuse contributes to energy conservation and environmental protection. The wind turbine blades undergo fiber recycling, followed by shredding, hot air separation, and screening for purification. The fibers are then drawn, impregnated with sizing agents, and bundled into raw yarn for high-performance weaving. During production, tension control is crucial for the yarn's post-processing. The yarn enters subsequent processes via guide wheels and is driven by a motor 4, which rotates the spline shaft 41. The spline shaft 41, through a spline sleeve 42, drives the spline rod 43 to rotate. The spline rod 43, through threaded transmission, rotates and moves left and right simultaneously. The spline portion of the spline rod 43 slides within the spline sleeve 42, thus... The moving ball 44 moves left and right. After moving, the ball 44 presses against the ball 33 and applies an outward axial force, which drives the guide plate 31 to expand outward through the expansion rod 32. This causes the diameter of the guide wheel to increase or decrease, thereby increasing or decreasing the tension on the yarn. This stabilizes the yarn traction and winding tension, avoids fiber damage, uneven thickness, and strength fluctuations, and ensures the mechanical properties and forming quality of the yarn. At the same time, the guide wheel guides the yarn, ensuring that the yarn runs accurately, without deviation or scratching, throughout the entire process of yarn making, post-processing, and winding. This ensures that the yarn is evenly dried and the packaged end face is flat, meeting the requirements for subsequent wind turbine blade weaving, prepreg, and main load-bearing structure use.

[0019] The material recycling system is used to dismantle retired blades and purify them through fiber recycling. The fiber recycling and purification adopts a mechanical method and is purified by chopping, hot air separation and screening. The yarn making system is used to remelt glass fiber and draw it into yarn, apply sizing agent and bundle it into raw yarn to adapt to high-performance weaving. The spline rod 43 is slidably connected inside the shaft cylinder 3, and the ball 44 has an arc-shaped groove in the middle, with the ball 33 located inside the arc-shaped groove.

[0020] Both ends of the shaft cylinder 3 are integrally formed with limit plates 34, and a spring 6 is provided between the inner side of the limit plate 34 and the outer side of the bracket plate 2. When the spline rod 43 moves left and right, a force is generated between the ball 44 and the ball 33. After the ball 33 is subjected to force, the expansion rod 32 causes the cylinder 3 to be subjected to force to the left or right. At this time, the position between the limiting plate 34 and the support plate 2 is offset. At the same time, the spring 6 is deformed by force, which causes the cylinder 3 to shift to the left or right, realizing synchronous control of tension and guidance. Synchronous operation can be achieved by using a small number of structures and a single motor 4, which greatly reduces the production cost of the guiding device. Moreover, the force of the spring 6 reduces the offset of the guide wheel, thereby avoiding the reduction of yarn guiding position accuracy and ensuring yarn quality. At the same time, it can provide sufficient force so that the ball 44 can smoothly squeeze the ball 33 to move outward, thereby smoothly increasing or decreasing the tension.

[0021] An electromagnetic block 7 is provided at the connection between the motor 4 and the support plate 2. The electromagnetic block 7 becomes magnetic after being energized. The spline sleeve 42 also becomes magnetic, and its magnetic poles are opposite to those of the energized electromagnetic block 7. After the electromagnetic block 7 is energized, the spline sleeve 42 and the spline rod 43 fall off and come into contact.

[0022] The internal thread of the spline rod 43 is connected to the screw rod 45. The right end of the screw rod 45 is integrally formed with a limit block 451, and the left end is integrally formed with a spline block 452. The spline block 452 is located between the spline shaft 41 and the spline rod 43. The left side of the limit block 451 and the right side of the right support plate 2 are in contact with each other. After tension adjustment, if the guide position requires further precision, the operator can energize the electromagnetic block 7 to generate magnetism, which in turn creates a magnetic attraction force on the spline sleeve 42, pulling it to the left and causing it to disengage from and contact the spline rod 43. Simultaneously, it engages with the spline block 452. At this point, the drive motor 4 rotates in either the forward or reverse direction, causing the spline block 452 to drive the screw 45 through threaded transmission, thus moving it to the left or right. The spline rod 43, through the limit block 451, causes the shaft cylinder 3 to be stressed and move to the left or right, precisely adjusting the guide position. At the same time, the position of the spline rod 43 remains unchanged, and the tension is unaffected. This method allows for simultaneous control of the guide and tension, as well as separate control of the guide, providing precise guide position adjustment. It is convenient to operate, multifunctional, uses fewer structural elements, and is low in cost.

[0023] The inner end of the expansion rod 32 is provided with a limit, and the limit is connected to the inner wall of the shaft cylinder 3 by a spring. After the expansion rod 32 moves outward under force, it compresses the spring through the limit, thereby deforming the spring. When the ball 44 returns to its original position or when the tension needs to be reduced, the reaction force applied by the spring allows the expansion rod 32 to move smoothly inward, ensuring high-precision control of the tension.

[0024] The ball bearing 33 is rolled within the arc-shaped groove; By connecting the ball 33 to the arc-shaped groove, the ball 33 can roll within the arc-shaped groove when it rubs and squeezes against the ball 44, thereby improving the smoothness between the two, reducing structural wear, and further enhancing the control precision of tension and guidance.

[0025] The inner side of the limiting plate 34, the left side of the intermediate support plate 2, and the right side of the right support plate 2 are all provided with annular grooves. The left and right ends of the elastic spring 6 are embedded in the annular grooves and are slidably connected with the annular grooves. During the guiding process, friction occurs between the yarn and the guide wheel, generating adhesion that drives the guide wheel to rotate, which in turn causes the shaft cylinder 3 to rotate. At this time, through the sliding connection between the annular groove and the elastic spring 6, the elastic spring 6 applies force to the limiting plate 34 while preventing the limiting plate 34 from getting stuck during rotation, thus avoiding jamming of the guide wheel. This can prevent excessive friction between the yarn and the guide wheel, thereby ensuring and improving the production quality of the yarn.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, 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, and therefore should not be construed as a limitation of this invention.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A yarn guiding and tension synchronization control system for wind turbine blades, comprising a yarn guiding and tension synchronization control device, characterized in that: The preceding processes of the yarn guiding and tension synchronization control system are the material recycling system and the yarn making system, and the yarn guiding and tension synchronization control system is the post-processing process, and is electrically connected to the yarn guiding and tension synchronization control device. The yarn guiding and tension synchronization control device includes a base (1) and three support plates (2). A shaft cylinder (3) is rotatably connected between the middle support plate (2) and the right support plate (2). A guide wheel is connected to the outside of the shaft cylinder (3). The guide wheel consists of three separate guide discs (31). A motor (4) is fixedly installed on the left side of the left support plate (2), and a sleeve (5) is fixed on the right side. An expansion rod (32) is integrally formed on the inner end of each guide disc (31), and the expansion rod (32) is slidably connected to the shaft cylinder (3). The motor (4) The output end of the sleeve (5) is fixed with a spline shaft (41). A spline sleeve (42) is sleeved on the outside of the spline shaft (41), and a spline rod (43) is connected through the spline sleeve (42). A ball (44) is integrally formed on the right end of the spline rod (43). A ball (33) is embedded in the inner end of the expansion rod (32), and the ball (33) contacts the ball (44). The right side of the spline rod (43) is a threaded part, and the left side is a spline part. A threaded hole is opened on the right side of the sleeve (5), and it is threadedly connected to the threaded part of the spline rod (43) through the threaded hole.

2. The yarn guiding and tension synchronization control system for wind turbine blades according to claim 1, characterized in that: The material recycling system is used to dismantle retired blades and purify them through fiber recycling. The fiber recycling and purification adopts a mechanical method and is purified by chopping, hot air separation and screening. The yarn making system is used to remelt glass fiber and draw it into yarn, apply sizing agent and bundle it into raw yarn to adapt to high-performance weaving. The spline rod (43) is slidably connected to the shaft cylinder (3), and the ball (44) has an arc groove in the middle, and the ball (33) is located in the arc groove.

3. The yarn guiding and tension synchronization control system for wind turbine blades according to claim 2, characterized in that: Both ends of the shaft (3) are integrally formed with limit plates (34), and a spring (6) is provided between the inner side of the limit plate (34) and the outer side of the bracket plate (2).

4. A yarn guiding and tension synchronization control system for wind turbine blades according to claim 3, characterized in that: An electromagnetic block (7) is provided at the connection between the motor (4) and the bracket plate (2). The electromagnetic block (7) is magnetic after being energized. The spline sleeve (42) is magnetic, and its magnetic poles are opposite to those of the electromagnetic block (7) after being energized. After the electromagnetic block (7) is energized, the spline sleeve (42) and the spline rod (43) fall off and come into contact.

5. A yarn guiding and tension synchronization control system for wind turbine blades according to claim 4, characterized in that: The internal thread of the spline rod (43) is connected to a screw rod (45). The right end of the screw rod (45) is integrally formed with a limiting block (451), and the left end is integrally formed with a spline block (452). The spline block (452) is located between the spline shaft (41) and the spline rod (43). The left side of the limiting block (451) is in contact with the right side of the right support plate (2).

6. A yarn guiding and tension synchronization control system for wind turbine blades according to claim 5, characterized in that: The inner end of the expansion rod (32) is provided with a limit, and the limit is connected to the inner wall of the shaft cylinder (3) by a spring.

7. A yarn guiding and tension synchronization control system for wind turbine blades according to claim 6, characterized in that: The ball (33) is rolled and connected in the arc groove.

8. A yarn guiding and tension synchronization control system for wind turbine blades according to claim 7, characterized in that: The inner side of the limiting plate (34), the left side of the intermediate support plate (2) and the right side of the right support plate (2) are all provided with annular grooves. The left and right ends of the elastic spring (6) are embedded in the annular grooves and are slidably connected with the annular grooves.

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