A carbon fiber unwinding tension balancing device

Abstract

The utility model relates to a kind of carbon fiber's yarn spreading tension balancing device, including two mounting seats, two The side close to each other of mounting seat is fixedly connected with two slide rails;The outer periphery of two The slide rail is slidably connected with slide base, two The slide base between fixedly connected with mounting plate, two The mounting plate between rotationally connected with driven roller;Two The side close to each other of mounting seat is fixedly connected with two limit blocks, two The limit block is set up upside and downside;The top and bottom of mounting plate are fixedly connected with upper limit rod and lower limit rod respectively, the top of upper limit rod and the bottom of lower limit rod are respectively penetrated through corresponding limit block;The top of mounting plate and the limit block located above between be provided with upper elastic component, the bottom of mounting plate and the limit block located below between be provided with lower elastic component.

Description

Technical Field

[0001] This utility model relates to carbon fiber product manufacturing equipment, and in particular to a carbon fiber yarn tension balancing device. Background Technology

[0002] As a core substrate for high-end composite materials, the production quality of carbon fiber prepreg directly determines the structural strength and dimensional stability of products in downstream fields such as aerospace, new energy vehicles, and high-end equipment. In the preparation process of carbon fiber prepreg, the yarn spreading process is one of the key steps. Its core objective is to achieve uniform widening and flattening of the fiber bundles through the synergistic action of multiple yarn spreading rods, laying the foundation for subsequent impregnation and shaping processes.

[0003] Existing carbon fiber prepreg machines typically employ 8-11 spreading rods in their spreading system. To improve spreading efficiency and width, these rods require heat treatment to reduce the surface friction coefficient of the carbon fiber and improve its extensibility. Simultaneously, tension is applied via upper and lower pressure rollers, and a left-right vibration mechanism adjusts the fiber bundle distribution, promoting a uniform transition from a "bundle" to a "sheet" shape. Specifically, the heated spreading rods reduce localized frictional resistance during transport, preventing fiber breakage due to friction. The upper and lower pressure rollers apply preset tension to assist in spreading and maintaining the fiber bundle's shape. The left-right vibration mechanism, through vibrations at specific frequencies and amplitudes, breaks the internal cohesion of the fiber bundle, further optimizing spreading uniformity and ensuring that the areal density deviation of the spread carbon fiber remains within the required process range.

[0004] However, in actual production, the aforementioned yarn spreading system faces a persistent tension fluctuation problem, which has become a core bottleneck restricting the improvement of carbon fiber prepreg quality and the optimization of production efficiency. Specifically, the tension control of existing yarn spreading systems relies on preset mechanical parameters (such as pressure roller pressure and transmission speed), lacking the ability to adaptively adjust dynamic variables in actual production. This is mainly reflected in the following two aspects:

[0005] On the one hand, during the transmission process, carbon fibers are prone to excessive tension due to load fluctuations in the feeding mechanism (such as differences in feeding speed caused by changes in the diameter of the carbon fiber roll) and deviations in the synchronization of the rotation speed of the transmission rollers. When the tension exceeds the breaking strength threshold of the carbon fiber, the carbon fiber bundle will experience single filament breakage, leading to the formation of fuzz and clumps. These defects not only cause uneven distribution of the adhesive in the subsequent impregnation process, but also cause irregular shrinkage of the finished prepreg during the curing process. In severe cases, obvious water ripple-like wrinkles will form on the fabric surface. Such defects directly lead to an increase in the scrap rate of prepreg. Some high-end fields have extremely high requirements for the flatness of the prepreg fabric surface, and water ripple defects will make the product completely unable to meet the usage requirements.

[0006] On the other hand, insufficient tension can occur when the conveying speed drops sharply, the pressure of the pressure rollers is insufficient, or there are localized loose sections in the carbon fiber bundle itself. Insufficient tension will prevent the carbon fiber bundle from fully unfolding, leaving a large number of undispersed fibers inside the bundle. The width of the unfolded carbon fiber will not reach the process design value, and some areas may even remain in a bundle shape. This will not only reduce the effective production area per unit time, leading to a decrease in production efficiency, but will also worsen the areal density uniformity of the prepreg, affecting the mechanical property stability of downstream products. Summary of the Invention

[0007] Therefore, there is a need to provide a carbon fiber yarn tension balancing device to solve the technical problems that occur during the existing carbon fiber yarn spreading process. Due to changes in the transmission speed or load fluctuations of the carbon fiber, the carbon fiber may experience excessive tension, which can easily cause the carbon fiber to produce fuzz or clumps, resulting in shrinkage of the finished product and, in severe cases, water ripples on the fabric surface. Alternatively, the carbon fiber may experience insufficient tension, resulting in unsatisfactory spreading effect and reduced production efficiency.

[0008] To achieve the above objectives, the inventors provide a carbon fiber yarn tension balancing device, comprising two mounting bases, each of which has two slide rails fixedly connected to one side of its adjacent side.

[0009] Each of the two slide rails is slidably connected to a slide block on its outer periphery, a mounting plate is fixedly connected between the two slide blocks, and a driven roller is rotatably connected between the two mounting plates;

[0010] Two limiting blocks are fixedly connected to the sides of the two mounting bases that are close to each other, and the two limiting blocks are arranged vertically.

[0011] The top and bottom of the mounting plate are respectively fixedly connected to an upper limit rod and a lower limit rod, and the top end of the upper limit rod and the bottom end of the lower limit rod respectively pass through the corresponding limit block;

[0012] An upper elastic component is provided between the top of the mounting plate and the upper limiting block, and a lower elastic component is provided between the bottom of the mounting plate and the lower limiting block.

[0013] As a preferred structure of this utility model, the mounting bases are provided with openings on their adjacent sides, the two slide rails are located on both sides of the openings, and the two limiting blocks are located at the top and bottom of the openings.

[0014] In a preferred embodiment of this invention, the upper elastic component is sleeved on the outer periphery of the upper limit rod, and the lower elastic component is sleeved on the outer periphery of the lower limit rod.

[0015] As a preferred structure of this utility model, the limiting block is provided with a limiting hole, the upper limiting rod and the lower limiting rod pass through the limiting hole through the corresponding limiting block, and the outer periphery of the upper limiting rod and the lower limiting rod are slidably connected to the inner sidewall of the limiting hole on the corresponding limiting block.

[0016] In a preferred embodiment of this invention, the upper elastic component is an upper spring, and the lower elastic component is a lower spring.

[0017] As a preferred structure of this utility model, the carbon fiber yarn tension balancing device further includes two adjusting mechanisms, which are respectively disposed at the bottom of the two mounting seats, and are used to adjust the distance between the two mounting seats.

[0018] As a preferred structure of this utility model, the adjusting mechanism includes a base, a lead screw is rotatably connected between the inner walls of the two ends of the base, a movable seat is threaded on the outer circumference of the lead screw, and the top of the movable seat is fixedly connected to the bottom of the corresponding mounting seat.

[0019] As a preferred structure of this utility model, at least one guide rod is fixedly connected between the inner walls of both ends of the base, and the movable seat is slidably sleeved on the outer periphery of at least one of the guide rods.

[0020] As a preferred structure of this utility model, one end of the lead screw extends to the outside of the base and is fixedly connected to an adjustment knob.

[0021] As a preferred structure of this utility model, the base is a U-shaped base.

[0022] The advantages of the above technical solution, compared with existing technologies, are as follows: The carbon fiber tension balancing device of this invention, by directly and symmetrically installing the upper and lower elastic components at the upper and lower ends of the driven roller, can more accurately balance tension fluctuations, avoiding problems such as roller tilting or uneven tension that may be caused by a single-sided elastic component. Simultaneously, the synergistic effect of the bidirectional elastic components can achieve effective tension buffering. When the carbon fiber transmission speed changes or the load fluctuates, the upper and lower elastic components can respond quickly, absorbing tension impacts through elastic deformation, greatly improving the overall structural compactness and tension adjustment accuracy, avoiding large tension fluctuations in the carbon fiber, and significantly improving the buffering effect and response speed. This ensures that the carbon fiber maintains a stable tension state throughout the entire transmission process, which is beneficial to improving the quality of subsequent processed products, avoiding the formation of fuzz or clumps, shrinkage, and water ripples, and improving the yarn unfolding effect and production efficiency. Furthermore, the cooperation between the limiting rod and the limiting block ensures that the mounting plate only makes stable vertical movements, avoiding lateral offset that could affect the tension adjustment accuracy.

[0023] The above description of the invention is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0024] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0025] In the accompanying drawings of the instruction manual:

[0026] Figure 1 One of the perspective views of the carbon fiber yarn tension balancing device described in the specific embodiment;

[0027] Figure 2 The second perspective view of the carbon fiber yarn tension balancing device described in the specific implementation method;

[0028] Figure 3 This is a front view of the carbon fiber yarn tension balancing device described in the specific embodiment;

[0029] Figure 4 This is a front view of the carbon fiber yarn tension balancing device described in the specific embodiment;

[0030] Figure 5 This is a schematic diagram of the adjusting mechanism described in a specific embodiment.

[0031] The reference numerals used in the above figures are explained as follows:

[0032] 1. Mounting bracket;

[0033] 2. Slide rail;

[0034] 3. Slide;

[0035] 4. Mounting plate;

[0036] 5. Driven roller;

[0037] 6. Limit block;

[0038] 61. Limiting hole,

[0039] 7. Upper limit lever;

[0040] 8. Lower limit rod;

[0041] 9. Upper elastic component;

[0042] 10. Lower elastic component;

[0043] 11. Adjustment mechanism; 1101. Base; 1102. Lead screw; 1103. Moving seat; 1104. Guide rod; 1105. Adjustment knob;

[0044] 12. Opening. Detailed Implementation

[0045] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0046] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0047] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0048] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0049] In this application, 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 actual quantity, hierarchy or order relationship between these entities or operations.

[0050] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0051] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0052] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. These expressions are only for the convenience of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. Furthermore, in this context, it should be understood that when it is mentioned that an element is connected "on" or "below" another element, it can be directly connected not only to the other element "on" or "below," but also indirectly connected to the other element "on" or "below" through an intermediate element.

[0053] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0054] Please see Figures 1 to 5This embodiment relates to a carbon fiber yarn tension balancing device, including two mounting bases 1. Two slide rails 2 are fixedly connected to the sides of the two mounting bases 1 that are close to each other. Slide seats 3 are slidably connected to the outer periphery of the two slide rails 2. A mounting plate 4 is fixedly connected between the two slide seats 3. A driven roller 5 is rotatably connected between the two mounting plates 4 through a bearing. Two limiting blocks 6 are fixedly connected to the sides of the two mounting bases 1 that are close to each other. The two limiting blocks 6 are arranged vertically. An upper limiting rod 7 and a lower limiting rod 8 are fixedly connected to the top and bottom of the mounting plate 4, respectively. The top end of the upper limiting rod 7 and the bottom end of the lower limiting rod 8 pass through the corresponding limiting blocks 6. An upper elastic component 9 is provided between the top of the mounting plate 4 and the upper limiting block 6, and a lower elastic component 10 is provided between the bottom of the mounting plate 4 and the lower limiting block 6. The upper elastic component 9 and the lower elastic component 10 are directly and symmetrically installed at the upper and lower ends of the driven roller 5, which more accurately balances tension fluctuations and avoids roller tilting or uneven tension that may be caused by a single elastic component. At the same time, the tension buffer is achieved through the synergistic effect of the bidirectional elastic components, which avoids large tension impacts on the carbon fiber when the transmission speed changes or the load fluctuates, improves the buffering effect and response speed of tension, ensures that the carbon fiber maintains a stable tension state during transmission, and improves the overall production efficiency.

[0055] Specifically, in this embodiment, the carbon fiber spreading tension balancing device, by directly and symmetrically installing the upper elastic component 9 and the lower elastic component 10 at the upper and lower ends of the driven roller 5, can more accurately balance tension fluctuations and avoid problems such as roller tilting or uneven tension that may be caused by a single elastic component. At the same time, the synergistic effect of the bidirectional elastic components can achieve effective tension buffering. When the carbon fiber transmission speed changes or the load fluctuates, the upper elastic component 9 and the lower elastic component 10 can respond quickly, absorbing tension impacts through elastic deformation, greatly improving the overall structural compactness and tension adjustment accuracy, avoiding large tension fluctuations in the carbon fiber, significantly improving the tension buffering effect and response speed, thereby ensuring that the carbon fiber maintains a stable tension state throughout the entire transmission process. This is beneficial to improving the quality of subsequent processed products, avoiding the formation of fuzz or clumps in the carbon fiber, preventing shrinkage and water ripple phenomena, improving the spreading effect and production efficiency.

[0056] Specifically, in this embodiment, the carbon fiber spreading tension balancing device achieves dynamic balance of carbon fiber tension through the deformation of the upper elastic component 9 and the lower elastic component 10: when the tension is too high during carbon fiber transmission, the pressure of the carbon fiber on the driven roller 5 increases, pushing the driven roller 5 to drive the mounting plate 4 to move upward along the slide rail 2. At this time, the upper elastic component 9 is compressed and the lower elastic component 10 is stretched. The elastic components generate a reverse elastic force to offset part of the tension, preventing the tension from exceeding the carbon fiber tolerance threshold. When the tension is insufficient, the restoring force of the elastic component pushes the mounting plate 4 downward, and the driven roller 5 applies appropriate pressure to the carbon fiber to supplement the tension and ensure the spreading effect. At the same time, the cooperation between the limiting rod and the limiting block 6 ensures that the mounting plate 4 only makes stable vertical movements, avoiding lateral displacement that affects the tension adjustment accuracy.

[0057] Specifically, in this embodiment, such as Figures 1 to 5 As shown, the mounting base 1 is the basic load-bearing component of the device, used to fix and support other components. It is made of a rigid material (such as steel) and has a plate-like structure. Slide rails 2 and limiting blocks 6 are fixed to both sides, providing a stable mounting foundation for the entire device. This rigid structure ensures the installation accuracy of each component and guarantees the operational stability of the device.

[0058] Specifically, in this embodiment, such as Figures 1 to 5 As shown, the slide rail 2 is a track component that guides the slide block 3 to move in a straight line. It is fixed parallel to the inner side of the mounting base 1 and forms a sliding fit with the slide block 3, limiting the movement trajectory of the slide block 3 to the up and down direction, so as to ensure that the vertical lifting and lowering movement of the slide block 3 and the mounting plate 4 is smooth and without deviation, and avoids tension adjustment deviation caused by movement skew.

[0059] Specifically, in this embodiment, such as Figures 1 to 5 As shown, the slide block 3 is a connecting component that can slide along the slide rail 2. It is sleeved on the outer periphery of the slide rail 2 and fixedly connected to the mounting plate 4, transmitting the force on the mounting plate 4 to the slide rail 2. Through sliding fit, the motion resistance is reduced, allowing the mounting plate 4 to respond flexibly to changes in tension.

[0060] Specifically, in this embodiment, such as Figures 1 to 5 As shown, mounting plate 4 is a plate-shaped connector used to mount driven roller 5. Its two sides are fixed to slide block 3, and its middle part is used to mount driven roller 5. It also connects upper limit rod 7 and lower limit rod 8. It is a key component for force transmission. The integration of the mounting of driven roller 5 and limit rods ensures the synchronization of the movement of each component.

[0061] Specifically, in this embodiment, such as Figures 1 to 5As shown, the driven roller 5 is a rotating component that contacts and moves with the carbon fiber. Its two ends are rotatably connected to the mounting plate 4 through bearings. The carbon fiber bundle passes over its surface, and the rotation of the roller reduces frictional damage to the carbon fiber, while the rolling contact reduces wear on the carbon fiber surface. At the same time, the tension change of the carbon fiber is converted into pressure or tension on the mounting plate 4.

[0062] Specifically, in this embodiment, such as Figures 1 to 5 As shown, the limiting block 6 is a block-shaped component that restricts the movement range of the mounting plate 4. It is fixed to the inner side of the mounting base 1 and is symmetrically arranged vertically. It is used to install the elastic component and limit the movement stroke of the limiting rod, preventing the elastic component from failing due to excessive movement of the mounting plate 4, while providing a force support point for the elastic component.

[0063] Specifically, in this embodiment, such as Figures 1 to 5 As shown, the upper elastic component 9 and the lower elastic component 10 are components that provide elastic restoring force. They are preferably springs, with the upper elastic component 9 being an upper spring and the lower elastic component 10 a lower spring. The upper and lower springs are respectively sleeved on the outer periphery of the upper limit rod 7 and the lower limit rod 8, with their ends abutting against the mounting plate 4 and the limiting block 6, respectively. They absorb tension fluctuation energy through their own elastic deformation and provide a reverse force when the tension changes, achieving tension buffering and balance.

[0064] Specifically, in this embodiment, such as Figures 1 to 5 As shown, the limiting hole 61 is a hole opened on the limiting block 6 for the limiting rod to pass through. It fits the limiting rod with a clearance, ensuring smooth sliding of the limiting rod while limiting its radial displacement. This ensures the straightness of the limiting rod's movement and improves the overall stability of the device.

[0065] Specifically, in this embodiment, such as Figures 1 to 5 As shown, during use, the cooperation of the two limiting blocks 6 with the upper limiting rod 7 and the lower limiting rod 8 not only guides the movement of the mounting plate 4 but also strictly limits its range of movement, preventing the driven roller 5 from deviating from its normal working trajectory due to excessive displacement, thus further ensuring the stability and safety of the carbon fiber transmission process. The sliding connection structure between the slide rail 2 and the slide block 3 ensures the smoothness of the mounting plate 4 driving the driven roller 5 up and down, reducing mechanical wear and extending the service life of the device.

[0066] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the mounting base 1 has openings 12 on its adjacent sides, the two slide rails 2 are located on both sides of the opening of the opening 12, and the two limiting blocks 6 are located at the top and bottom of the opening of the opening 12.

[0067] Specifically, in this embodiment, such as Figures 1 to 5As shown, the opening 12 is a window-like structure opened on the mounting base 1. It is located in the middle of the mounting base 1, and the slide rail 2 and the limiting block 6 are distributed on both sides of the opening 12, providing movement space for the mounting plate 4 and the driven roller 5, saving installation space, making the device structure more compact, and at the same time facilitating the observation of the internal operating status.

[0068] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the upper elastic component 9 is sleeved on the outer periphery of the upper limit rod 7, and the lower elastic component 10 is sleeved on the outer periphery of the lower limit rod 8. In use, the coordinated action of the upper elastic component 9 and the lower elastic component 10 achieves a bidirectional buffering mechanism, thus buffering tension fluctuations during the carbon fiber transmission process.

[0069] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the limiting block 6 has a limiting hole 61. The upper limiting rod 7 and the lower limiting rod 8 pass through the limiting hole 61 and are connected to the inner wall of the limiting hole 61 on the corresponding limiting block 6.

[0070] Specifically, in this embodiment, such as Figures 1 to 5 As shown, the upper limit rod 7 and the lower limit rod 8 are rod-shaped components that restrict the movement direction of the mounting plate 4 and transmit force. They are vertically fixed to the upper and lower ends of the mounting plate 4, pass through the corresponding limit blocks 6, and form a sliding fit with the limit blocks 6, further limiting the movement direction of the mounting plate 4 to the vertical direction, avoiding lateral deviation, and ensuring the accurate force direction of the elastic components.

[0071] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the carbon fiber yarn tension balancing device also includes two adjusting mechanisms 11, which are respectively disposed at the bottom of the two mounting seats 1. The two adjusting mechanisms 11 are used to adjust the distance between the two mounting seats 1. By adjusting the distance between the two mounting seats 1 through the adjusting mechanisms 11, the driven rollers 5 of different specifications can be installed and used to adapt to the transmission requirements of carbon fibers of different specifications, thereby enhancing the versatility and practicality of the device.

[0072] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the adjusting mechanism 11 includes a base 1101. A lead screw 1102 is rotatably connected between the inner walls of both ends of the base 1101 via bearings. A movable seat 1103 is threaded onto the outer circumference of the lead screw 1102. The top of the movable seat 1103 is fixedly connected to the bottom of the corresponding mounting base 1. In this embodiment, as shown... Figure 5 As shown, the base 1101 is a U-shaped base 1101.

[0073] Optionally, in some embodiments, such as Figures 1 to 5 As shown, at least one guide rod 1104 is fixedly connected between the inner walls of both ends of the base 1101, and the movable seat 1103 is slidably fitted around the outer periphery of at least one guide rod 1104. In this embodiment, there are two guide rods 1104. It should be noted that the number of guide rods 1104 is not limited in this embodiment.

[0074] Optionally, in some embodiments, such as Figures 1 to 5 As shown, one end of the lead screw 1102 extends to the outside of the base 1101 and is fixedly connected to an adjustment knob 1105. The adjustment knob 1105 is a component for manually adjusting the lead screw 1102. It is fixed to the end of the lead screw 1102 and rotates manually to drive the lead screw 1102 to rotate. This makes the pitch adjustment operation convenient and labor-saving, facilitating precise control of the spacing between the mounting seats 1. The pitch adjustment mechanism 11 allows for adjustment based on actual production needs. By rotating the adjustment knob 1105, the lead screw 1102 rotates, causing the moving seat 1103 to move axially along the lead screw 1102 under the limiting action of the guide rod 1104. This adjusts the distance between the two mounting seats 1, enabling the installation and use of driven rollers 5 of different specifications to meet the transmission requirements of different specifications of carbon fibers, enhancing the versatility and practicality of the device.

[0075] Specifically, in the carbon fiber tension balancing device of this embodiment, when the tension of the carbon fiber increases during transmission, the driven roller 5 receives an upward thrust, causing the mounting plate 4 to move upward. At this time, the upper limit rod 7 slides upward within the limiting hole 61 of the limiting block 6, the upper elastic component 9 is compressed, and the lower elastic component 10 is stretched. The upper elastic component 9 and the lower elastic component 10 together generate opposite elastic forces to buffer the increase in tension. When the tension of the carbon fiber decreases, the mounting plate 4 moves downward under its own weight and the elastic restoring force of the upper elastic component 9 and the lower elastic component 10. The lower limit rod 8 slides downward within the limiting hole 61. Similarly, the decrease in tension is buffered by the synergistic effect of the upper elastic component 9 and the lower elastic component 10, thereby achieving dynamic balance of the carbon fiber tension. The design of the upper elastic component 9 being sleeved on the outer periphery of the upper limit rod 7 and the lower elastic component 10 being sleeved on the outer periphery of the lower limit rod 8 can effectively prevent the elastic components from shifting or twisting laterally during the extension and contraction process, ensuring that the elastic components always generate elastic force along the axial direction, thus improving the accuracy and reliability of tension buffering. In addition, when it is necessary to adjust the distance between the two mounting seats 1 to accommodate the transmission of carbon fibers of different specifications, turn the adjustment knob 1105 to drive the lead screw 1102 to rotate in the base 1101. The moving seat 1103 moves along the axial direction of the lead screw 1102 under the guidance of the guide rod 1104, thereby driving the mounting seat 1 to move and complete the distance adjustment.

[0076] Compared with existing technologies, this technical solution has the following beneficial effects:

[0077] Dynamic tension balance: Through the real-time deformation of elastic components, tension fluctuations are automatically buffered, effectively solving the problems of fuzz and clumps caused by excessive tension and poor stretching caused by insufficient tension;

[0078] Stable and reliable structure: The dual guiding structure of slide rail 2 and limit rod ensures a smooth and non-deviation-free tension adjustment process, improving the operational stability of the device;

[0079] High adaptability: The spacing adjustment mechanism 11 can flexibly adjust the spacing of the mounting base 1 to adapt to the processing requirements of carbon fiber bundles of different specifications.

[0080] Easy to maintain: The overall structure is simple, and each component adopts a modular design, which facilitates disassembly, maintenance, and replacement of vulnerable parts;

[0081] Low cost: No complex electronic control system is required; tension adjustment is achieved through mechanical structure, reducing manufacturing costs and energy consumption.

[0082] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A device for balancing the tension of carbon fiber yarn, characterized in that: It includes two mounting bases, and two slide rails are fixedly connected to the side of each mounting base that is close to each other; Each of the two slide rails is slidably connected to a slide block on its outer periphery, a mounting plate is fixedly connected between the two slide blocks, and a driven roller is rotatably connected between the two mounting plates; Two limiting blocks are fixedly connected to the sides of the two mounting bases that are close to each other, and the two limiting blocks are arranged vertically. The top and bottom of the mounting plate are respectively fixedly connected to an upper limit rod and a lower limit rod, and the top end of the upper limit rod and the bottom end of the lower limit rod respectively pass through the corresponding limit block; An upper elastic component is provided between the top of the mounting plate and the upper limiting block, and a lower elastic component is provided between the bottom of the mounting plate and the lower limiting block.

2. The carbon fiber yarn tension balancing device according to claim 1, characterized in that: The mounting bases have openings on their adjacent sides, the two slide rails are located on both sides of the openings, and the two limiting blocks are located at the top and bottom of the openings.

3. The carbon fiber yarn tension balancing device according to claim 1, characterized in that: The upper elastic component is sleeved on the outer periphery of the upper limit rod, and the lower elastic component is sleeved on the outer periphery of the lower limit rod.

4. The carbon fiber yarn tension balancing device according to claim 1, characterized in that: The limiting block has a limiting hole, and the upper limiting rod and the lower limiting rod pass through the limiting hole through the corresponding limiting block. The outer periphery of the upper limiting rod and the lower limiting rod are slidably connected to the inner wall of the limiting hole on the corresponding limiting block.

5. The carbon fiber yarn tension balancing device according to any one of claims 1 to 4, characterized in that: The upper elastic component is an upper spring, and the lower elastic component is a lower spring.

6. The carbon fiber yarn tension balancing device according to any one of claims 1 to 4, characterized in that: The carbon fiber yarn tension balancing device also includes two adjusting mechanisms, which are respectively disposed at the bottom of the two mounting seats. The two adjusting mechanisms are used to adjust the distance between the two mounting seats.

7. The carbon fiber yarn tension balancing device according to claim 6, characterized in that: The adjusting mechanism includes a base, and a lead screw is rotatably connected between the inner walls of the two ends of the base. A movable seat is threaded onto the outer circumference of the lead screw, and the top of the movable seat is fixedly connected to the bottom of the corresponding mounting seat.

8. The carbon fiber yarn tension balancing device according to claim 7, characterized in that: At least one guide rod is fixedly connected between the inner walls of both ends of the base, and the movable seat is slidably sleeved on the outer periphery of at least one of the guide rods.

9. The carbon fiber yarn tension balancing device according to claim 7, characterized in that: One end of the lead screw extends to the outside of the base and is fixedly connected to an adjustment knob.

10. A carbon fiber yarn tension balancing device according to claim 7, characterized in that: The base is a U-shaped base.

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