Constant-tension reel for overweight large tow carbon fibers

Abstract

The utility model discloses a constant tension reel for overweight large tow carbon fibers, which relates to the technical field of constant tension reels for carbon fibers, and adopts the technical scheme that the constant tension reel comprises an outer support cylinder, an inner mandrel, a maintenance-free bearing, a friction tension mechanism, a tension adjusting mechanism, a spring support mechanism and an angle adjusting mechanism, and the inner core shaft is arranged in the outer supporting cylinder. The constant-tension reel for the overweight large tow carbon fibers has the advantages that the reel and the creel are inclined by a certain angle, friction caused by the gravity of the carbon fibers is offset through the spring, and therefore the tension is constant when the outer supporting cylinder rotates.

Description

Technical Field

[0001] The utility model relates to the technical field of constant tension reels for carbon fibers, in particular to a constant tension reel for ultra-heavy tow carbon fibers. Background Art

[0002] Carbon fiber refers to high-strength, high-modulus fibers with a carbon content of over 90%. It features lightweight, high strength, corrosion resistance, fatigue resistance, and high-temperature resistance. It is fibrous, soft, and can be processed into various fabrics. Finished carbon fiber is wound around a straight cylinder and placed on a reel on a creel when in use. The tension control systems currently available on the market, consisting of belts and brake discs, can result in uneven tension distribution within the product due to the inclusion of carbon fibers or debris. This tension inconsistency can affect the performance and durability of the product. Due to the physical properties of carbon fiber, such as its flexibility and elasticity, stability can decrease over time or under specific conditions (such as high temperature, high pressure, and other environments). This reduced stability can affect the reliability and safety of the product.

[0003] How to solve the above problems is the research topic of this program. Utility Model Content

[0004] In order to achieve the above-mentioned purpose of the utility model and address the above-mentioned technical problems, the utility model provides a constant tension reel for ultra-heavy tow carbon fiber.

[0005] The technical solution is as follows: it includes an outer support tube, an inner core shaft, a maintenance-free bearing, a friction tension mechanism, a tension adjustment mechanism, a spring support mechanism, and an angle adjustment mechanism; the inner core shaft is arranged in the outer support tube;

[0006] The outer support tube is used to place large-tow carbon fibers;

[0007] The inner core shaft is used to support the entire reel;

[0008] The maintenance-free bearing is used to realize the rotation of the entire bearing, and to retract and release the large-tow carbon fiber from the yarn roll;

[0009] The friction tension mechanism is used to provide friction, thereby providing tension to the yarn;

[0010] The tension adjustment mechanism includes a threaded sleeve for adjusting the tension;

[0011] The spring support mechanism includes a spring for providing tension;

[0012] The angle adjustment mechanism is connected to the creel and the inner core shaft and is used to adjust the angle of the reel.

[0013] Outer support cylinder and inner core shaft: The outer support cylinder is used to hold the large-tow carbon fiber, while the inner core shaft is used to support the entire reel. This structure ensures good stability and support when carrying heavy weight.

[0014] Maintenance-free bearings: These bearings enable the entire reel to rotate smoothly, efficiently reeling in and out the large-tow carbon fiber. The maintenance-free design reduces maintenance and downtime, increasing the reel's reliability and lifespan.

[0015] Friction Tension Mechanism: This mechanism provides constant tension on the yarn by providing the necessary friction. This design is crucial to ensuring uniform tension on the carbon fiber during processing, helping to improve the quality of the finished product.

[0016] Tension adjustment mechanism: including a threaded sleeve, this mechanism allows the user to adjust the tension as needed, providing flexibility and adaptability in the use of the reel.

[0017] Spring support mechanism: This mechanism includes springs that provide the necessary tension to help maintain constant tension in the yarn.

[0018] Angle adjustment mechanism: Connects the creel and the inner core shaft to adjust the angle of the reel, allowing different types of carbon fiber to be placed on the reel. This adjustment capability allows the reel to better adapt to different working environments and requirements.

[0019] Inclined ramp and angled boss design: This design allows for more precise control of friction, thereby more effectively maintaining constant tension.

[0020] Limit slots and limit bars design: This ensures the reel's range of motion is effectively controlled, reducing unexpected deviation or slippage.

[0021] In general, the comprehensive use of multiple mechanisms and components ensures that constant tension can be maintained when processing large tow carbon fibers, which is of great significance for improving the quality and production efficiency of carbon fiber products.

[0022] The outer support tube is configured as a cylindrical structure, and both ends of the outer support tube are symmetrically provided with a bearing placement groove, a spring placement groove, and a friction tension mechanism connection groove which are sequentially arranged along the axial direction of the outer support tube from the inside to the outside.

[0023] The maintenance-free bearing is arranged in the bearing placement groove, the outer ring of the maintenance-free bearing is fixedly connected to the inner wall of the bearing placement groove, and the inner ring of the maintenance-free bearing is fixedly connected to the outer wall of the inner core shaft.

[0024] The spring is arranged in the spring placement groove, and two ends of the spring are respectively in contact with the maintenance-free bearing and the friction tension mechanism.

[0025] The friction tension mechanism is sleeved on the inner core shaft, and the friction tension mechanism includes a movable part and a fixed part;

[0026] The fixing member is provided with an annular structure, and an inner wall of one end of the fixing member facing the movable member is provided with an inclined surface;

[0027] The movable part includes a limiting plate and an inclined boss arranged at one end of the limiting plate. Circular grooves are opened in the middle of the limiting plate and the inclined boss, and the inclined boss is arranged toward one side of the fixing part.

[0028] The outer wall of the fixing member is fixedly connected to the inner wall of the friction tension mechanism connecting groove.

[0029] The movable part is sleeved on the inner core shaft, the spring provides compression force, the outer wall of the fixed part is fixedly connected to the inner wall of the connecting groove of the friction tension mechanism, and the friction force is adjusted by adjusting the tension of the spring.

[0030] The inclination of the inclined surface is smaller than the inclination angle of the side surface of the inclined boss, and the diameter of the opening in the middle of the fixing piece is larger than the diameter of the end portion of the inclined boss.

[0031] Symmetrical limiting grooves are provided on the inner wall of the circular groove, and limiting strips are provided at both ends of the inner core shaft corresponding to the limiting grooves;

[0032] The limiting strip is slidably matched with the limiting groove.

[0033] The threaded sleeve is arranged outside the limiting plate of the movable part, and the threaded sleeve is connected to the outer wall of the inner core shaft through threads.

[0034] One end of the inner core shaft is hinged to the creel through an angle adjustment mechanism, and the other end passes through the interior of the outer support tube;

[0035] The angle adjustment mechanism includes a fixed rod fixed on the creel, a hinged disc 1 arranged at the end of the fixed rod, a hinged disc 2 rotatably connected to the hinged disc 1, and one end of the inner core shaft is fixedly connected to the hinged disc 2;

[0036] The fixing rod is fixed on the creel at an angle, and one end of the fixing rod is fixedly connected to the hinged disc 1. The hinged disc 1 is provided with a groove 1, and the middle part of the inner wall of the groove 1 is provided with an annular limiting ring;

[0037] The hinged disc 2 is provided with a connecting rod matching the groove 1 at one end thereof facing the hinged disc 1, and an annular limiting groove 1 is provided on the outer wall of the connecting rod, and the limiting groove 1 is slidably matched with the limiting ring;

[0038] The hinged disc 1, the hinged disc 2 and the connecting rod are provided with threaded holes extending therethrough in the middle thereof, and the hinged disc 1, the hinged disc 2 and the connecting rod are fixedly connected by bolts;

[0039] The fixing rod is arranged obliquely to the creel.

[0040] The beneficial effects brought about by the technical solution provided by the embodiment of the present utility model are as follows: the solution provides a constant tension reel for ultra-large tow carbon fiber, which tilts the reel and the yarn frame at a certain angle and offsets the friction caused by the gravity of the carbon fiber through a spring, so that when the outer support tube rotates, the tension is constant, thereby providing efficient and stable performance when processing large tow carbon fiber, and ensuring the quality of the material and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0042] Figure 2 This is a cross-sectional view of the outer support tube according to an embodiment of the present invention.

[0043] Figure 3 This is a schematic diagram of the structure inside the external support tube of an embodiment of the present utility model.

[0044] Figure 4 for Figure 3 A partial enlarged view of .

[0045] Figure 5 This is a schematic structural diagram of the inner core shaft in an embodiment of the present utility model.

[0046] Figure 6 This is a schematic diagram of the structure of the angle adjustment mechanism of the embodiment of the utility model Figure 1 .

[0047] Figure 7 This is a schematic diagram of the structure of the angle adjustment mechanism of the embodiment of the utility model Figure 2 .

[0048] Figure 8 This is a schematic diagram of the structure of the friction tension mechanism of the utility model embodiment Figure 1 .

[0049] Figure 9 This is a schematic diagram of the structure of the friction tension mechanism of the utility model embodiment Figure 2 .

[0050] The accompanying drawings are marked as follows: 1. outer support cylinder; 2. inner core shaft; 3. maintenance-free bearing; 4. friction tension mechanism; 7. angle adjustment mechanism; 501. threaded sleeve; 601. spring; 8. creel;

[0051] 101. Bearing placement slot; 102. Spring placement slot; 103. Friction tension mechanism connection slot;

[0052] 401, movable part; 402, fixed part; 4011, limit plate; 4012, inclined boss; 4013, circular groove; 4021, inclined slope;

[0053] 4014, limit slot; 201, limit strip;

[0054] 710, fixing rod; 701, hinged disc 1; 702, hinged disc 2; 703, groove 1; 704, limiting ring; 705, connecting rod; 706, limiting groove 1; 707, bolt. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0056] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0058] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. A person skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0059] Example 1

[0060] See also Figures 1 to 9 The utility model provides a constant tension reel for ultra-heavy tow carbon fiber, comprising an outer support tube 1, an inner core shaft 2, a maintenance-free bearing 3, a friction tension mechanism 4, a tension adjustment mechanism, a spring support mechanism, and an angle adjustment mechanism 7; the inner core shaft 2 is arranged in the outer support tube 1;

[0061] The outer support tube 1 is used to place large-tow carbon fibers;

[0062] The inner core shaft 2 is used to support the entire reel;

[0063] The maintenance-free bearing 3 is used to realize the rotation of the entire bearing, and to reel in and release the large-tow carbon fiber from the yarn roll;

[0064] The friction tension mechanism 4 is used to provide friction force, thereby providing tension to the yarn;

[0065] The tension adjustment mechanism includes a threaded sleeve 501 for adjusting the tension;

[0066] The spring support mechanism includes a spring 601 for providing tension;

[0067] The angle adjustment mechanism 7 connects the creel 8 and the inner core shaft 2 and is used to adjust the angle of the reel.

[0068] The outer support tube 1 is configured as a cylindrical structure, and both ends of the outer support tube 1 are symmetrically provided with a bearing placement groove 101, a spring placement groove 102, and a friction tension mechanism connection groove 103 which are sequentially arranged along the axial direction of the outer support tube 1 from inside to outside.

[0069] A maintenance-free bearing 3 is arranged in the bearing placement groove 101 , the outer ring of the maintenance-free bearing 3 is fixedly connected to the inner wall of the bearing placement groove 101 , and the inner ring of the maintenance-free bearing 3 is fixedly connected to the outer wall of the inner core shaft 2 .

[0070] A spring 601 is arranged in the spring placement groove 102 , and two ends of the spring 601 contact the maintenance-free bearing 3 and the friction tension mechanism 4 respectively.

[0071] The friction tension mechanism 4 is sleeved on the inner core shaft 2 and includes a movable part 401 and a fixed part 402;

[0072] The fixing member 402 is provided as a ring structure, and an inner wall of one end of the fixing member 402 facing the movable member 401 is provided with an inclined surface 4021;

[0073] The movable member 401 includes a limiting plate 4011 and an inclined boss 4012 provided at one end of the limiting plate 4011 . A circular groove 4013 is provided in the middle of the limiting plate 4011 and the inclined boss 4012 . The inclined boss 4012 is provided toward the fixed member 402 .

[0074] The outer wall of the fixing member 402 is fixedly connected to the inner wall of the friction tension mechanism connecting groove 103 .

[0075] Symmetrical limiting grooves 4014 are provided on the inner wall of the circular groove 4013, and limiting strips 201 are provided at both ends of the inner core shaft 2 corresponding to the limiting grooves 4014;

[0076] The limiting strip 201 is slidably matched with the limiting groove 4014 .

[0077] The threaded sleeve 501 is arranged outside the limiting plate 4011 of the movable member 401 , and the threaded sleeve 501 is connected to the outer wall of the inner core shaft 2 through threads.

[0078] When using this utility model:

[0079] Preparation stage:

[0080] The large-tow carbon fiber is placed on the outer support tube 1.

[0081] Make sure the inner core shaft 2 is correctly installed in the outer support cylinder to support the entire reel.

[0082] Adjust the tension:

[0083] As needed, the degree of compression of the spring 601 by the movable member 401 at both ends of the outer support tube 1 is adjusted, and then the movable member 401 is restricted to a certain position using the threaded sleeve 501, thereby adjusting the required tension. This is usually done before the reel starts to run.

[0084] Start the scroll:

[0085] The reel rotation is assisted by maintenance-free bearings 3. These bearings ensure smooth reel rotation with low maintenance requirements.

[0086] The friction tension mechanism 4 provides a constant friction force during operation to maintain the tension of the yarn.

[0087] Adjustments during operation:

[0088] During the operation of the reel, if the tension needs to be adjusted, it can be achieved by adjusting the threaded sleeve 501 and the spring 601.

[0089] The design of the inclined ramps and angled bosses allows for fine-tuning of friction as the reel runs to maintain constant tension.

[0090] Maintenance and inspection:

[0091] Check the maintenance-free bearings 3 regularly to ensure they are in good operating condition.

[0092] Check the components of the friction tension mechanism 4 and the spring support mechanism to ensure their performance and reliability.

[0093] In this way, this designed constant tension reel can provide efficient and stable performance when processing large-tow carbon fiber, ensuring material quality and processing efficiency.

[0094] Example 2

[0095] A constant tension reel for ultra-heavy tow carbon fiber, comprising an outer support tube 1, an inner core shaft 2, a maintenance-free bearing 3, a friction tension mechanism 4, a tension adjustment mechanism, a spring support mechanism, and an angle adjustment mechanism 7; the inner core shaft 2 is disposed in the outer support tube 1;

[0096] The outer support tube 1 is used to place large-tow carbon fibers;

[0097] The inner core shaft 2 is used to support the entire reel;

[0098] The maintenance-free bearing 3 is used to realize the rotation of the entire bearing, and to reel in and release the large-tow carbon fiber from the yarn roll;

[0099] The friction tension mechanism 4 is used to provide friction force, thereby providing tension to the yarn;

[0100] The tension adjustment mechanism includes a threaded sleeve 501 for adjusting the tension;

[0101] The spring support mechanism includes a spring 601 for providing tension;

[0102] The angle adjustment mechanism 7 connects the creel 8 and the inner core shaft 2 and is used to adjust the angle of the reel.

[0103] The outer support tube 1 is configured as a cylindrical structure, and both ends of the outer support tube 1 are symmetrically provided with a bearing placement groove 101, a spring placement groove 102, and a friction tension mechanism connection groove 103 which are sequentially arranged along the axial direction of the outer support tube 1 from inside to outside.

[0104] A maintenance-free bearing 3 is arranged in the bearing placement groove 101 , the outer ring of the maintenance-free bearing 3 is fixedly connected to the inner wall of the bearing placement groove 101 , and the inner ring of the maintenance-free bearing 3 is fixedly connected to the outer wall of the inner core shaft 2 .

[0105] A spring 601 is arranged in the spring placement groove 102 , and two ends of the spring 601 contact the maintenance-free bearing 3 and the friction tension mechanism 4 respectively.

[0106] The friction tension mechanism 4 is sleeved on the inner core shaft 2 and includes a movable part 401 and a fixed part 402;

[0107] The fixing member 402 is provided as a ring structure, and an inner wall of one end of the fixing member 402 facing the movable member 401 is provided with an inclined surface 4021;

[0108] The movable member 401 includes a limiting plate 4011 and an inclined boss 4012 provided at one end of the limiting plate 4011 . A circular groove 4013 is provided in the middle of the limiting plate 4011 and the inclined boss 4012 . The inclined boss 4012 is provided toward the fixed member 402 .

[0109] The outer wall of the fixing member 402 is fixedly connected to the inner wall of the friction tension mechanism connecting groove 103 .

[0110] Example 3

[0111] On the basis of Example 1, the inclination of the inclined surface 4021 is smaller than the inclination angle of the side surface of the inclined boss 4012 , and the diameter of the opening in the middle of the fixing member 402 is larger than the diameter of the end of the inclined boss 4012 .

[0112] This design enables one side of the movable member 401 to be compressed against the spring 601 .

[0113] Example 4

[0114] On the basis of Example 1, one end of the inner core shaft 2 is hinged to the creel 8 through the angle adjustment mechanism 7, and the other end passes through the interior of the outer support tube 1;

[0115] The angle adjustment mechanism 7 includes a fixed rod 710 fixed to the creel 8, a hinged disc 1 701 provided at the end of the fixed rod 710, a hinged disc 2 702 rotatably connected to the hinged disc 1 701, and one end of the inner core shaft 2 is fixedly connected to the hinged disc 2 702;

[0116] The fixing rod 710 is fixed on the creel 8 at an angle, and one end of the fixing rod 710 is fixedly connected to the hinged disc 1 701. The hinged disc 1 701 is provided with a groove 1 703. The middle part of the inner wall of the groove 1 703 is provided with an annular limiting ring 704.

[0117] A connecting rod 705 is provided on one end of the hinged disc 2 702 facing the hinged disc 1 701 and matches the groove 1 703 . An annular limiting groove 1 706 is provided on the outer wall of the connecting rod 705 . The limiting groove 1 706 is slidably matched with the limiting ring 704 .

[0118] The hinged disc 1 701, the hinged disc 2 702 and the connecting rod 705 are provided with threaded holes extending therethrough in the middle thereof, and the hinged disc 1 701, the hinged disc 2 702 and the connecting rod 705 are fixedly connected by bolts 707;

[0119] The fixing rod 710 is arranged obliquely to the creel 8 .

[0120] During use, the angle of the reel can be adjusted according to work requirements through the angle adjustment mechanism 7. After that, the hinged disc 1 701, the hinged disc 2 702 and the connecting rod 705 are fixedly connected by bolts 707. This adjustment capability allows the reel to better adapt to different working environments and requirements.

[0121] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A constant tension reel for ultra-heavy tow carbon fiber, characterized in that: It comprises an outer support cylinder (1), an inner core shaft (2), a maintenance-free bearing (3), a friction tension mechanism (4), a tension adjustment mechanism, a spring support mechanism, and an angle adjustment mechanism (7); the inner core shaft (2) is arranged in the outer support cylinder (1); The outer support tube (1) is used to place large-tow carbon fibers; The inner core shaft (2) is used to support the entire reel; The maintenance-free bearing (3) is used to realize the rotation of the entire bearing and to retract and release the large-tow carbon fiber from the yarn roll; The friction tension mechanism (4) is used to provide friction force, thereby providing tension to the yarn; The tension adjustment mechanism comprises a threaded sleeve (501) for adjusting the tension; The spring support mechanism comprises a spring (601) for providing tension; The angle adjustment mechanism (7) is connected to the creel (8) and the inner core shaft (2) and is used to adjust the angle of the reel; The outer support tube (1) is configured as a cylindrical structure, and both ends of the outer support tube (1) are symmetrically provided with a bearing placement groove (101), a spring placement groove (102), and a friction tension mechanism connection groove (103) which are sequentially arranged along the axial direction of the outer support tube (1) from the inside to the outside. The maintenance-free bearing (3) is arranged in the bearing placement groove (101), the outer ring of the maintenance-free bearing (3) is fixedly connected to the inner wall of the bearing placement groove (101), and the inner ring of the maintenance-free bearing (3) is fixedly connected to the outer wall of the inner core shaft (2); The spring (601) is arranged in the spring placement groove (102), and two ends of the spring (601) respectively contact the maintenance-free bearing (3) and the friction tension mechanism (4); The friction tension mechanism (4) is sleeved on the inner core shaft (2), and the friction tension mechanism (4) includes a movable part (401) and a fixed part (402); The fixing member (402) is configured as a ring-shaped structure, and an inner wall of one end of the fixing member (402) facing the movable member (401) is provided with an inclined surface (4021); The movable member (401) comprises a limiting plate (4011) and an inclined boss (4012) arranged at one end of the limiting plate (4011); a circular groove (4013) is provided in the middle of the limiting plate (4011) and the inclined boss (4012); and the inclined boss (4012) is arranged toward one side of the fixed member (402); The outer wall of the fixing member (402) is fixedly connected to the inner wall of the friction tension mechanism connection groove (103); The inclination of the inclined surface (4021) is smaller than the inclination angle of the side surface of the inclined boss (4012), and the diameter of the opening in the middle of the fixing member (402) is larger than the diameter of the end of the inclined boss (4012); Symmetrical limiting grooves (4014) are provided on the inner wall of the circular groove (4013), and limiting strips (201) are provided at both ends of the inner core shaft (2) corresponding to the limiting grooves (4014); The limiting strip (201) is slidably matched with the limiting groove (4014); The threaded sleeve (501) is arranged outside the limiting plate (4011) of the movable part (401), and the threaded sleeve (501) is connected to the outer wall of the inner core shaft (2) via a thread; One end of the inner core shaft (2) is hinged to the yarn frame (8) via an angle adjustment mechanism (7), and the other end passes through the interior of the outer support tube (1); The angle adjustment mechanism (7) comprises a fixed rod (710) fixed on the yarn rack (8), a hinged disc 1 (701) arranged at the end of the fixed rod (710), a hinged disc 2 (702) rotatably connected to the hinged disc 1 (701), and one end of the inner core shaft (2) is fixedly connected to the hinged disc 2 (702); The fixing rod (710) is fixed on the yarn rack (8) at an angle, and one end of the fixing rod (710) is fixedly connected to the hinged disc 1 (701). The hinged disc 1 (701) is provided with a groove 1 (703). The middle part of the inner wall of the groove 1 (703) is provided with an annular limiting ring (704). The hinged disc 2 (702) is provided with a connecting rod (705) matching the groove 1 (703) at one end thereof facing the hinged disc 1 (701), and an annular limiting groove 1 (706) is provided on the outer wall of the connecting rod (705), and the limiting groove 1 (706) is slidably matched with the limiting ring (704); The hinged disc 1 (701), the hinged disc 2 (702) and the connecting rod (705) are provided with threaded holes extending therethrough in the middle thereof, and the hinged disc 1 (701), the hinged disc 2 (702) and the connecting rod (705) are fixedly connected by bolts (707); The fixing rod (710) is arranged obliquely to the creel (8).

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