A carbon fiber unwinding machine's filament separating device and carbon fiber unwinding machine

Abstract

The utility model provides a kind of carbon fiber yarn feeder's silk separating device and carbon fiber yarn feeder, silk separating device is arranged between silk roll and tension controller, including, silk separating comb, it includes the multiple guide wire posts of interval arrangement along the axial direction of silk roll, for wire drawing between adjacent two guide wire posts;Guide wheel, along the wire direction, it is arranged in the downstream of silk separating comb, its outer periphery is equipped with multiple first guide wire grooves along its axial direction arrangement, each first guide wire groove and the clearance between each adjacent two guide wire posts correspond.The utility model can divide the original silk bundle into multiple groups of output by silk separating comb and guide wheel, the setting of silk separating comb can ensure that each group of original silk bundle is stably fallen into each first guide wire groove of guide wheel, ensure the positioning effect to each group of original silk bundle, so that, when the yarn feeder is uncoiled to multiple original silk bundles, avoid the situation of parallel silk, improve the uniformity and stability of each group of original silk bundle state in the process of yarn feeding, improve the quality of carbon fiber.

Description

Technical Field

[0001] This utility model belongs to the technical field of carbon fiber production equipment, specifically relating to a fiber splitting device for a carbon fiber feeding machine, and also to a carbon fiber feeding machine equipped with the fiber splitting device. Background Technology

[0002] In recent years, carbon fiber has occupied an increasingly important position in the reinforcement of advanced composite materials due to its excellent properties such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, creep resistance, erosion resistance, as well as electrical and thermal conductivity.

[0003] The unwinding machine is the primary equipment in carbon fiber production. It is used to release the wound precursor fibers at a uniform and stable speed, and to control the release speed and tension of the precursor fibers to meet the requirements of subsequent processing. For example, Chinese invention patent application number CN201010597423.8 discloses an unwinding machine for producing continuous carbon fibers.

[0004] Existing unwinding machines can only unwind single filament bundles, resulting in low production efficiency. To increase output without altering the production site, some equipment uses double-groove guide wheels to unwind two filament bundles, separating the raw filament bundles on the spool into two groups for subsequent processing. However, in practical applications, this method is prone to the problem of the two groups of raw filament bundles merging, thus affecting subsequent processes in carbon fiber production and ultimately reducing the overall performance of the carbon fiber.

[0005] Therefore, designing a fiber splitting device for a carbon fiber unwinding machine that can avoid the problem of two sets of raw fiber bundles merging has become a technical problem that urgently needs to be solved by those skilled in the art.

[0006] In view of this, this utility model is hereby proposed. Utility Model Content

[0007] This utility model provides a fiber splitting device for a carbon fiber unwinding machine. By sequentially setting a fiber splitting comb and a guide wheel between the fiber roll and the tension controller, the raw fiber bundle is split into multiple groups for output. The setting of the fiber splitting comb can ensure that each group of raw fiber bundles falls stably into the first guide groove of the guide wheel, thus solving the problem of fiber tangling that easily occurs when multiple raw fiber bundles are unwound in existing unwinding machines.

[0008] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: A fiber splitting device for a carbon fiber unwinding machine, disposed between the fiber roll and a tension controller, includes, A filament comb includes multiple guide posts spaced apart along the axial direction of the filament roll, with the space between adjacent guide posts used for filament feeding. The guide roller is located downstream of the filament separating comb along the filament feeding direction. It has multiple first guide grooves arranged along its axial direction on its outer periphery, and the gap between each first guide groove and each of the two adjacent guide columns corresponds to the gap between them.

[0009] Furthermore, at least the width of the opening of the first guide wire groove is greater than or equal to the gap width between the two adjacent guide wire posts.

[0010] Furthermore, the width of the first guide wire groove gradually decreases from the groove opening to the bottom of the groove; Preferably, the bottom of the first guide wire groove is set as a smoothly transitioning arc shape.

[0011] Furthermore, a swing arm is provided on one side of the silk roll, and its length direction is set at an angle to the axis of the silk roll; one end of the swing arm is mounted on a rotating shaft perpendicular to the axis of the silk roll, which is a hinged end, and the other end is a movable end. The filament comb is installed at the movable end, and the guide wheel is installed at the hinged end.

[0012] Furthermore, the side of the guide roller away from the splitting comb corresponds to the pivot of the oscillating arm, and the raw filament bundle is wound around the guide roller from the side of the guide roller away from the splitting comb.

[0013] Furthermore, the movable end of the swing arm swings along with the raw yarn bundle under the tension of the raw yarn bundle, and the swing angle of the swing arm is less than or equal to 45°. Preferably, the angle between the winding direction of the raw filament bundle on the spool and the axial direction of the spool is greater than 0° and less than 90°, and the bundle is arranged along the axial direction of the spool; during the unwinding process of the raw filament bundle, the movable end swings with the raw filament bundle under the tension of the raw filament bundle.

[0014] Furthermore, the oscillating arm extends horizontally, and the sizing comb and guide wheel are installed on the side of the oscillating arm facing the yarn roll; Preferably, the movable end of the swing arm extends directly above or below the yarn roll, and the range of motion of the movable end along the axial direction of the yarn roll is greater than or equal to the axial length of the yarn roll.

[0015] Furthermore, a guide roller is installed on the movable end of the swivel arm. The guide roller is installed on the side of the swivel comb away from the filament roll, and its axis is parallel to the axis of the guide wheel. The guide roller is positioned close to the filament splitter, and the guide roller covers at least the gap between each two adjacent guide rollers in the axial direction. Preferably, the end of the filament comb extends to the outside of the side of the guide roller on which the filament is wound.

[0016] Furthermore, the tension wheel of the tension controller is provided with a second guide wire groove, and the second guide wire groove is provided with multiple grooves that correspond one-to-one with each of the first guide wire grooves.

[0017] This utility model also provides a carbon fiber unwinding machine, which is equipped with the fiber splitting device of the above-mentioned carbon fiber unwinding machine; the filament bundle is wound on the filament roll, and the filament bundle is divided into at least two groups by the fiber splitting device. Preferably, the fiber splitting device divides the raw fiber bundle into equal parts.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: 1. This utility model, by sequentially setting a filament-splitting comb and a guide wheel between the filament roll and the tension controller, divides the raw filament bundle into multiple output groups through the filament-splitting comb and the guide wheel. The setting of the filament-splitting comb can ensure that each group of raw filament bundles falls stably into the first guide groove of each guide wheel, ensuring the positioning effect of each group of raw filament bundles. Thus, when multiple raw filament bundles are unwound in the unwinding machine, the situation of filament tangling is avoided, improving the uniformity and stability of the state of each group of raw filament bundles during the unwinding process, and improving the quality of carbon fiber.

[0019] 2. By setting up a swaying arm, the movable end of the swaying arm can drive the slitting comb to swing with the original filament bundle during the unwinding process, which can reduce the friction between the original filament bundle and the guide post of the slitting comb. At the same time, the guide wheel swings synchronously with the slitting comb, which can ensure that the original filament bundle falls smoothly into the first guide groove of the guide wheel and avoid filament tangling.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the carbon fiber feeding machine in an embodiment of the present invention; Figure 2 This is a schematic diagram of the filament comb in an embodiment of the present invention.

[0022] Description of main components in the diagram: 1. Raw yarn bundle; 2. Yarn roll; 3. Yarn separating comb; 4. Guide roller; 41. Support column; 42. Guide column; 5. Yarn swing arm; 6. Guide wheel; 7. Tension wheel; 8. Adjusting arm; 9. Control box.

[0023] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0027] like Figure 1 and Figure 2 As shown in the embodiment of this utility model, a fiber splitting device for a carbon fiber feeding machine is introduced.

[0028] The carbon fiber unwinding machine includes a frame, an unwinding roller mounted on the frame, and a tension controller mounted on the frame. The filament roll 2 is fixed on the unwinding roller. When the traction device pulls the raw filament bundle 1 on the unwinding roller, the filament roll 2 rotates with the unwinding roller.

[0029] The filament splitting device is positioned between the filament roll 2 and the tension controller. The raw filament bundles 1 on the filament roll 2 are divided into several groups by the filament splitting device, thereby enabling the unwinding of multiple raw filament bundles 1. By positioning the filament splitting device between the filament roll 2 and the tension controller, the tension of the tension controller can be used to divide the raw filament bundles 1 into multiple groups.

[0030] In this embodiment, the filament separating device includes a filament separating comb 3 and a filament guiding wheel 6. The filament separating comb 3 and the filament guiding wheel 6 are arranged sequentially along the direction of the original filament bundle 1. That is, the filament guiding wheel 6 is arranged downstream of the filament separating comb 3 along the direction of the filament bundle 1. The original filament bundle 1 passes through the filament separating comb 3 and is sequentially wound around the filament guiding wheel 6 and the tension wheel 7 of the tension controller.

[0031] The fiber separating comb 3 includes multiple guide posts 42 arranged at intervals along the axial direction of the filament roll 2. Adjacent guide posts 42 are used for fiber feeding, meaning that each group of raw filament bundles 1 passes through the gap between adjacent guide posts 42. Thus, the fiber separating comb 3 divides the raw filament bundles 1 into multiple groups, preventing filament tangling. The surface of the guide posts 42 is smooth to avoid snagging.

[0032] The outer circumference of the guide wheel 6 is provided with a plurality of first guide grooves arranged along its axial direction. Each first guide groove corresponds to the gap between each pair of adjacent guide posts 42. After each set of raw filament bundles 1 passes through the gap on the splitting comb 3, they are respectively wound in the corresponding first guide groove. Preferably, the axial direction of the guide wheel 6 is parallel to the arrangement direction of the guide posts 42.

[0033] In some specific embodiments, the splitting comb 3 includes a support post 41 extending axially along the filament roll 2, and guide posts 42 are disposed on the support post 41, extending in a direction perpendicular to the support post 41, and spaced apart along the length direction of the support post 41. Preferably, the guide posts 42 are parallel to each other, thereby forming a gap between adjacent guide posts 42, and each gap is used for each group of raw filament bundles 1 to pass through.

[0034] Preferably, in this embodiment, the extending direction of the support column 41 is parallel to the axial direction of the guide wheel.

[0035] In this embodiment, at least the width of the opening of the first guide groove is greater than or equal to the gap width between the two adjacent guide posts 42. This ensures that the raw filament bundle 1 extending from the splitting comb 3 can be wound within each of the first guide grooves, preventing the raw filament bundle 1 from detaching from the first guide groove and causing filament tangling during the unwinding process.

[0036] The width of the first guide groove gradually decreases from the opening to the bottom of the groove. That is, the first guide groove is set to a structure with a "V" or "U" shaped cross section, so that each group of raw filament bundles 1 converges to the bottom of the first guide groove, which can shape the raw filament bundles 1 and ensure the compactness of the raw filament bundles 1.

[0037] Preferably, the bottom of the first guide wire groove is set as a smoothly transitioning arc shape.

[0038] In this embodiment, the angle between the winding direction of the raw filament bundle 1 on the filament roll 2 and the axial direction of the filament roll 2 is greater than 0° and less than 90°, and the bundle is arranged along the axial direction of the filament roll 2. That is, the raw filament bundle 1 is spirally wound on the filament roll 2, and is wound back and forth between the two ends of the filament roll 2.

[0039] Because there is a large difference in size between the width of the filament comb 3 and the axial length of the filament roll 2, and the filament roll 2 is axially limited relative to the unwinding roller, the angle between the raw filament bundle 1 and the guide post 42 of the filament comb 3 is constantly changing during the unwinding process of the raw filament bundle 1.

[0040] During the unwinding process, as the traction device pulls the raw filament bundle 1 to rotate the filament roll 2, when the winding point of the raw filament bundle 1 on the filament roll 2 moves towards the position directly opposite the filament comb 3, the angle between the raw filament bundle 1 and the guide post 42 gradually decreases. When the winding point of the raw filament bundle 1 on the filament roll 2 moves away from the position directly opposite the filament comb 3, the angle between the raw filament bundle 1 and the guide post 42 gradually increases.

[0041] The point where the raw silk bundle 1 is wound on the silk roll 2 is the point where the silk roll 2 outputs the raw silk bundle 1, that is, the point where the raw silk bundle 1 is unwound.

[0042] Another objective of this invention is to provide a swing arm 5 to reduce the range of variation of the angle between the raw filament bundle 1 and the guide post 42 of the splitting comb 3, thereby reducing the friction between the raw filament bundle 1 and the splitting comb 3 and improving the control accuracy of the tension of the raw filament bundle 1.

[0043] In this embodiment, the wire splitting device further includes a sway arm 5, which is mounted on the frame via a rotating shaft. Specifically, one end of the sway arm 5 is mounted on a rotating shaft perpendicular to the axis of the wire roll 2 and is a hinged end, while the other end is a movable end.

[0044] The oscillating arm 5 is located on one side of the yarn roll 2, and its length direction is angled to the axis of the yarn roll 2. The yarn separating comb 3 is installed at the movable end of the oscillating arm 5, and the guide wheel 6 is installed at the hinged end of the oscillating arm 5. Thus, during the unwinding process of the raw yarn bundle 1, the movable end swings with the raw yarn bundle 1 under the tension of the raw yarn bundle 1. This ensures that the distance between the yarn separating comb 3 and the yarn roll 2 is relatively close, while keeping the angle between the raw yarn bundle 1 and the guide post 42 of the yarn separating comb 3 within a small range of variation. This reduces the influence of the yarn separating comb 3 on the tension of the raw yarn bundle 1, reduces the friction between the raw yarn bundle 1 and the guide post 42, and also helps to reduce the size of the carbon fiber unwinding machine.

[0045] Preferably, in this embodiment, the oscillating arm 5 extends horizontally, and the sizing comb 3 and the guide wheel 6 are installed on the side of the oscillating arm 5 facing the spool 2. This ensures that the movable end of the oscillating arm 5 swings with the original spool 1 under the tension of the original spool 1, eliminating the influence of gravity on the swing of the oscillating arm 5.

[0046] Preferably, in this embodiment, the swing angle of the swing arm 5 is less than or equal to 45°. Specifically, the swing angle of the swing arm 5 can be adjusted by setting the length of the swing arm 5, the vertical distance between the swing arm 5 and the wire roll 2, and the relative position between the hinge end of the swing arm 5 and the wire roll 2.

[0047] The wire feeding machine can be adapted to its placement site by adjusting the length of the oscillating arm 5, and / or the vertical distance between the oscillating arm 5 and the wire roll 2, and / or the relative position between the hinge end of the oscillating arm 5 and the wire roll 2.

[0048] In this embodiment, the swing angle of the swing arm 5 is inversely proportional to the length of the swing arm 5, and / or inversely proportional to the vertical distance between the swing arm 5 and the wire roll 2, and / or inversely proportional to the horizontal distance between the hinge end of the swing arm 5 and the wire roll 2.

[0049] Preferably, in this embodiment, the movable end of the oscillating arm 5 extends directly above or below the silk roll 2, and the range of motion of the movable end along the axial direction of the silk roll 2 is greater than or equal to the axial length of the silk roll 2.

[0050] In some specific embodiments, during the filament splitting process, the sway arm swings slowly and with a small amplitude under the drive of the original filament bundle, thereby preventing the sway arm from affecting the filament splitting accuracy due to the inertia of the swing and ensuring the working stability of the filament feeding machine.

[0051] In this embodiment, the vertical distance H between the axis of the guide roller 4 and the axis of the feed roller is 50cm to 70cm. The horizontal distance L between the axis of the guide roller 4 and the axis of the rotating shaft of the oscillating arm is 50cm to 70cm.

[0052] In this embodiment, the fiber feeding speed of the carbon fiber feeding machine is 4-11 meters per minute.

[0053] In this embodiment, the time for the oscillating arm to complete one cycle is 40 to 60 seconds. That is, the time for the oscillating arm to swing from above one end of the yarn roll to above the other end of the yarn roll is 20 to 30 seconds.

[0054] In this embodiment, those skilled in the art can select specific design dimensions.

[0055] In some specific embodiments, during actual use testing, the length of the yarn roll was 50cm, with L selected as 65cm and H as 70cm. At a yarn feeding speed of 8 meters per minute, the oscillation speed of the yarn swing arm was approximately π / 100 radians per second, and no yarn bundling occurred.

[0056] In some specific embodiments, the axis of the unwinding roller extends horizontally, and the yarn roll 2 is coaxially sleeved on the unwinding roller. The oscillating arm 5 is positioned above the yarn roll 2, and the pivot of the oscillating arm 5 is located on one side of the axis of the yarn roll 2, perpendicular to the axis of the unwinding roller. The raw yarn bundle 1 is unwound from the side of the yarn roll 2 away from the pivot of the oscillating arm 5; that is, during the unwinding process of the raw yarn bundle 1, the top of the yarn roll 2 rotates toward the side where the pivot of the oscillating arm 5 is located.

[0057] The filament separating comb 3 is positioned above the unwinding side of the filament roll 2. The length of the guide post 42 of the filament separating comb 3 is sufficient to ensure that the raw filament bundle 1 does not detach from the filament separating comb 3 during the swinging process of the swing arm 5.

[0058] The raw yarn bundle 1 is wound around the guide roller 6 from the side of the guide roller 4 away from the splitting comb 3. The side of the guide roller 6 away from the splitting comb 3 corresponds to the rotation axis of the swing arm 5. Thus, during the swing of the swing arm 5, the raw yarn bundle 1 downstream of the guide roller 6 in the yarn feeding direction can only be twisted, and will not be affected by the swing arm 5 to produce circumferential displacement around the rotation axis of the swing arm 5. This prevents the raw yarn bundle 1 from detaching from the tension wheel 7 of the tension controller and avoids yarn bundling.

[0059] Preferably, in this embodiment, when the sway arm 5 rotates to be perpendicular to the axis of the filament roll 2, the filament comb 3 corresponds vertically to the side of the filament roll 2 away from the axis of rotation of the sway arm 5.

[0060] Preferably, in this embodiment, a guide roller 4 is installed on the movable end of the sway arm 5. The guide roller 4 is installed on the side of the slitting comb 3 away from the spool 2, and its axis is parallel to the axis of the guide wheel 6.

[0061] In this embodiment, the guide roller 4 is installed at the movable end of the oscillating arm 5 and swings with the oscillating arm 5. The guide roller 4 is located close to the splitting comb 3. The guide roller 4 covers at least the gap between each two adjacent guide posts 42 in the axial direction. That is, after the raw yarn bundle 1 passes through the gap on the splitting comb 3, it is wrapped around the guide roller 4 and will not detach from the end of the guide roller 4 due to the swing of the oscillating arm 5.

[0062] Preferably, in this embodiment, the support column 41 of the splitting comb 3 is located directly below the guide roller 4, and the guide column 42 extends in a direction away from the hinge end of the swing arm 5. The guide roller 4 is located close to the splitting comb 3, and the end of the splitting comb 3 extends to the outside of the side of the guide roller 4 where the yarn is wound. That is, the end of the guide column 42 of the splitting comb 3 extends to the outside of the side of the guide roller 4 away from the hinge end of the swing arm 5. This ensures that during the swing of the swing arm 5, the raw yarn bundle 1 is always within the gap between two adjacent guide columns 42 and will not detach from the end of the splitting comb 3. In addition, the arrangement of the guide roller 4 can further reduce the friction between the raw yarn bundle 1 and the splitting comb 3.

[0063] In some specific embodiments, the movable end of the sway arm 5 is provided with a first extension that extends downward, the guide roller 4 and the filament comb 3 are respectively provided at the end of the first extension, and the filament comb 3 is provided below the guide roller 4.

[0064] The oscillating arm 5 is provided with a downwardly extending second extension near its hinge end. The second extension extends downward and away from the movable end, and the guide wheel 6 is mounted on the second extension.

[0065] Preferably, in this embodiment, the top of the guide roller 4 is at the same height as the top of the bottom of the first guide groove of the guide roller 4.

[0066] In some preferred embodiments, the axis of the rotating shaft corresponds to the bottom of the first guide groove of the guide wheel 6 on the side away from the splitting comb 3.

[0067] Specifically, in this embodiment, the hinge end of the oscillating arm 5 is provided with a bushing, which is sleeved on the rotating shaft and axially limited to the rotating shaft.

[0068] In some possible embodiments, a damping structure is provided between the hinge end and the pivot.

[0069] In this embodiment, the tension controller includes a control box 9, an adjusting arm 8, and a tension wheel 7. The adjusting arm 8 is mounted on the control box 9, and the tension wheel 7 is mounted on the end of the adjusting arm 8. The raw yarn bundle 1 passes around the guide wheel 6, winds around the tension wheel 7, and is then connected to the traction device. The tension controller is used to control the tension of the raw yarn bundle 1.

[0070] Specifically, in this embodiment, the tension controller adopts counterweight control, and the tension is provided by the gravity of the tension wheel.

[0071] like Figure 1As shown, the first end of the adjusting arm 8 is mounted on the control box 9 via the first rotating shaft, and the tension wheel is mounted on the second end of the adjusting arm 8 via the second rotating shaft. The first rotating shaft and the second rotating shaft extend horizontally and are parallel to each other.

[0072] Specifically, the adjusting arm 8 is a mechanical arm that can swing around the first rotating axis. When the tension changes, the tension wheel will rise or fall, thereby driving the adjusting arm 8 to swing up and down around the first rotating axis.

[0073] An angle sensor is installed between the control box 9 and the adjusting arm 8. The angle sensor is used to convert the swing angle of the adjusting arm 8 into a voltage signal.

[0074] The feeding roller is driven by a variable frequency motor, which is communicatively connected to an angle sensor.

[0075] A frequency converter is installed between the angle sensor and the variable frequency motor. The frequency converter adjusts the speed of the variable frequency motor according to the voltage signal of the angle sensor.

[0076] The control logic of the tension controller is as follows: Initially, the diameter of the yarn roll is at its maximum, and the unwinding roller operates at a relatively low speed, so the tension of the raw yarn bundle is balanced; that is, the adjusting arm is maintained at a certain rotation angle, and the tension of the raw yarn bundle reaches the preset balance value. As unwinding proceeds, the diameter of the yarn roll gradually decreases. At the same unwinding roller speed, the output speed of the raw yarn bundle decreases. At the same time, the driving speed of the traction device on the raw yarn bundle remains unchanged. That is, at least two groups of yarn bundles after being separated by the yarn splitting device enter the subsequent process at the same uniform speed under the drive of the traction device. Therefore, as the diameter of the yarn roll gradually decreases, the tension of the raw yarn bundle between the yarn roll and the traction device will gradually increase. As the tension of the raw yarn bundle increases, the tension wheel is pulled upward by the raw yarn bundle, changing the voltage signal output by the angle sensor. The frequency converter changes the output frequency according to the voltage signal from the angle sensor, thereby adjusting the speed of the unwinding roller.

[0077] Specifically, as the diameter of the yarn roll gradually decreases, the actual tension of the raw yarn bundle is greater than the preset balance value, which will cause the tension wheel to swing upward around the first axis. As the tension wheel is pulled upward, the output voltage of the angle sensor increases, the output frequency of the frequency converter increases, and the speed of the frequency converter motor increases. As a result, the speed of the unwinding roller increases, the output speed of the raw yarn bundle increases, and the tension of the raw yarn bundle is restored to balance. That is, the actual tension of the raw yarn bundle is restored to the preset balance value, and the adjusting arm 8 swings back.

[0078] In this embodiment, the above settings enable feedback adjustment of the tension of the raw filament bundle.

[0079] In some specific embodiments, the output voltage of the angle sensor is 0 to 10V, corresponding to the output frequency of the strain gauge is 0 to 50Hz.

[0080] During the testing phase, those skilled in the art can calibrate the voltage range of the angle sensor to ensure that 0 to 10V corresponds to an effective swing angle. They can also adjust the linear relationship between voltage and frequency according to the specific control precision required.

[0081] For example, initially, the traction device is not working, the tension wheel is in a natural downward state, the output voltage of the angle sensor is 0V, the output frequency of the strain gauge is 0, and the variable frequency motor is not working. When the traction device starts working, the tension of the raw filament bundle gradually increases, causing the tension wheel to oscillate counterclockwise around the first axis. When the tension of the raw filament bundle reaches a preset equilibrium value, the tension of the raw filament bundle and the gravity of the tension wheel reach equilibrium. At this time, the output voltage of the angle sensor is n (V), corresponding to the output frequency of the strain gauge is m (Hz). Here, n is greater than 0 and less than 10, and m is greater than 0 and less than 50.

[0082] When the diameter of the yarn roll decreases, the tension of the raw yarn bundle increases. The raw yarn bundle drives the tension wheel to swing counterclockwise around the first axis, which increases the output voltage of the angle sensor, corresponding to an increase in the output frequency of the strain gauge, and an increase in the speed of the variable frequency motor, thus restoring the tension of the raw yarn bundle to the preset equilibrium value. In this way, the tension of the raw yarn bundle is always in dynamic equilibrium.

[0083] The tension wheel 7 of the tension controller is provided with a second guide wire groove, and the second guide wire groove is provided with a plurality of corresponding to each of the first guide wire grooves.

[0084] Specifically, in this embodiment, the raw filament bundle 1 passes through the splitting comb 3 and is sequentially wound around the guide roller 4, the guide wheel 6 and the tension wheel 7. The tension wheel 7 is located below the guide wheel 6 and on the side of the guide wheel 6 away from the splitting comb 3. The second guide groove is a flat-bottomed groove extending along the length direction of the tension wheel 7 to provide a margin for the torsion generated by the raw filament bundle 1 when the swing arm 5 rotates. Example

[0085] In this embodiment, a carbon fiber feeding machine is also provided, on which the fiber splitting device described in Embodiment 1 is installed.

[0086] The carbon fiber unwinding machine has a raw filament bundle 1 wound on the filament roll 2, and the raw filament bundle 1 is divided into at least two groups by a filament splitting device.

[0087] Preferably, the fiber splitting device divides the raw fiber bundle into 1 equal parts.

[0088] In this embodiment, the raw silk bundle 1 is composed of several fiber filaments.

[0089] By sequentially setting a filament splitting comb 3 and a guide wheel 6 between the filament roll 2 and the tension controller, the raw filament bundle 1 is divided into multiple output groups by the filament splitting comb 3 and the guide wheel 6. The setting of the filament splitting comb 3 can ensure that each group of raw filament bundle 1 falls stably into each of the first guide grooves of the guide wheel 6, ensuring the positioning effect of each group of raw filament bundle 1. Thus, when the unwinding machine unwinds multiple raw filament bundles 1, the situation of filament tangling is avoided, improving the uniformity and stability of the state of each group of raw filament bundles 1 during the unwinding process, and improving the quality of carbon fiber.

[0090] In some possible embodiments, the traction device can be a drive roller, on which the raw filament bundle output from the carbon fiber unwinding machine is wound, and the drive roller drives the raw filament bundle into the subsequent process.

[0091] The subsequent processes include oxidation, carbonization, sizing, and yarn winding.

[0092] In some possible embodiments, to avoid filament bundling, a filament separating comb can be added between the tension wheel and the traction device, i.e., the drive roller. Furthermore, a dedicated person can be stationed at the filament separating comb to manually separate the filament bundles when filament bundling occurs.

[0093] In some specific embodiments, drive rollers are provided before carbonization and / or before sizing and / or before take-up.

[0094] In some specific embodiments, during the winding process, each group of filaments is wound around a winding end spool, each winding end spool is set on a winding roller, and each winding roller is driven to rotate by a variable frequency motor.

[0095] The filament bundle is wound around the take-up end of the filament roll and passes through a tension sensor. Each tension sensor corresponds to a variable frequency motor that drives the take-up roller. The tension sensor is communicatively connected to the variable frequency motor, converting the real-time tension signal into an electrical signal (e.g., 0-10V) and transmitting it to the control system. Under the control of the control system, the variable frequency motor adjusts its speed to achieve overall tension balance, preventing any single filament bundle from being too tight or too loose.

[0096] Specifically, if the tension of a certain filament bundle is higher than the set value, the control system reduces the speed of the variable frequency motor corresponding to that filament bundle, slows down the winding speed, and reduces the tension; if the tension is lower than the set value, the speed of the variable frequency motor is increased to speed up the winding and increase the tension.

[0097] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A filament separating device of a carbon fiber fiberizing machine, which is provided between a fiber roll (2) and a tension controller, characterized in that, include, The filament comb (3) includes multiple guide posts (42) spaced apart along the axial direction of the filament roll (2), with the space between two adjacent guide posts (42) used for filament feeding. The guide wheel (6) is located downstream of the wire splitting comb (3) along the wire feeding direction. It has multiple first guide grooves arranged along its axial direction on its outer periphery. The gap between each first guide groove and each adjacent two guide posts (42) corresponds to the gap between them.

2. The fiber splitting device of the carbon fiber feeding machine according to claim 1, characterized in that, At least the width at the opening of the first guide wire groove is greater than or equal to the gap width between the two adjacent guide wire posts (42).

3. The fiber separating device of the carbon fiber spinning machine according to claim 2, wherein The width of the first guide wire groove gradually decreases from the groove opening to the bottom of the groove; The bottom of the first guide wire groove is designed as a smoothly transitioning arc.

4. The fiber splitting device of the carbon fiber feeding machine according to any one of claims 1 to 3, characterized in that, A swing arm (5) is provided on one side of the silk roll (2), and its length direction is set at an angle to the axis of the silk roll (2); one end of the swing arm (5) is installed on a rotating shaft perpendicular to the axis of the silk roll (2), which is a hinge end, and the other end is a movable end. The splitting comb (3) is installed at the movable end, and the guide wheel (6) is installed at the hinge end.

5. The fiber splitting device of the carbon fiber feeding machine according to claim 4, characterized in that, The side of the guide roller (6) away from the splitting comb (3) corresponds to the axis of rotation of the oscillating arm (5), and the raw yarn bundle (1) is wound around the guide roller (6) from the side of the guide roller (4) away from the splitting comb (3).

6. The fiber splitting device of the carbon fiber feeding machine according to claim 5, characterized in that, The movable end of the swing arm (5) swings with the original silk bundle (1) under the tension of the original silk bundle (1), and the swing angle of the swing arm (5) is less than or equal to 45°.

7. The fiber separating device of a carbon fiber spinning machine according to claim 6, wherein The sway arm (5) extends horizontally, and the sway comb (3) and the guide wheel (6) are installed on the side of the sway arm (5) facing the spool (2); The movable end of the swing arm (5) extends directly above or below the silk roll (2), and the range of motion of the movable end along the axial direction of the silk roll (2) is greater than or equal to the axial length of the silk roll (2).

8. The fiber splitting device of the carbon fiber feeding machine according to claim 7, characterized in that, A guide roller (4) is installed on the movable end of the swivel arm (5). The guide roller (4) is installed on the side of the swivel comb (3) away from the spool (2), and its axis is parallel to the axis of the guide wheel (6). The guide roller (4) is positioned close to the splitting comb (3), and the guide roller (4) covers at least the gap between each two adjacent guide columns (42) in the axial direction; The end of the splitting comb (3) extends to the outside of the side of the guide roller (4) on which the wire is wound.

9. The fiber splitting device of the carbon fiber feeding machine according to any one of claims 1 to 3, characterized in that, The tension wheel (7) of the tension controller is provided with a second guide wire groove, and the second guide wire groove is provided with multiple grooves that correspond one-to-one with each of the first guide wire grooves.

10. A carbon fiber spinning machine characterized by comprising: A fiber splitting device is installed on the carbon fiber unwinding machine according to any one of claims 1 to 9; a raw filament bundle (1) is wound on the filament roll (2), and the raw filament bundle (1) is divided into at least two groups by the fiber splitting device; The fiber splitting device divides the raw filament bundle (1) into equal parts.

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