A fiber bundle opening machine

Abstract

The application provides a fiber bundle unwinding machine, which comprises a supporting part and an impregnation part, an air jet part and a dispersion part arranged in sequence along the conveying direction of the fiber bundle. The impregnation part comprises an impregnation tank and a vibrating roller, the impregnation tank is arranged on the supporting part and used for containing a preset solution, the bottom of the vibrating roller is immersed in the preset solution, and the vibration direction of the vibrating roller is perpendicular to the conveying direction of the fiber bundle and the height direction of the supporting part. The air jet part is arranged on the supporting part, and the top of the air jet part is provided with a plurality of air outlets. The dispersion part comprises a dispersion roller, the dispersion roller is rotationally arranged on the supporting part, and the top surface height of the dispersion roller gradually decreases along the vibration direction of the vibrating roller. The fiber bundle unwinding machine provided by the application can provide three different ways of unwinding for the fiber bundle through the impregnation part, the air jet part and the dispersion part, the unwinding effect is good, and the single fiber can be unwound.

Description

Technical Field

[0001] This application relates to the field of fiber and composite material manufacturing technology, and in particular to a fiber bundle spreading machine. Background Technology

[0002] Polyacrylonitrile-based carbon fiber is a high-performance new material with advantages such as high specific strength, high specific modulus, low coefficient of thermal expansion, and good corrosion resistance. It is widely used in aerospace, automotive, sports, and medical fields. In the manufacture of composite materials, the degree of fiber bundle spread is an important factor affecting the performance of prepregs. A large fiber bundle spread width and uniform and stable fiber dispersion help to achieve better resin impregnation of the fibers during the prepreg preparation process.

[0003] Currently, existing filament spreading machines have a single filament spreading method and poor filament spreading effect. Summary of the Invention

[0004] To overcome the problems existing in the related technologies, this application provides a fiber bundle spreading machine.

[0005] According to an embodiment of this disclosure, a fiber bundle spreading machine is provided, including a support part, and an impregnation part, an air jetting part, and a dispersing part arranged sequentially along the fiber bundle conveying direction;

[0006] The impregnation section includes an impregnation tank and a vibrating roller. The impregnation tank is disposed on the support section to contain a preset solution. The vibrating roller is disposed on the support section via a vibration mechanism. The bottom of the vibrating roller is immersed in the preset solution. The vibration direction of the vibrating roller is perpendicular to both the conveying direction of the fiber bundle and the height direction of the support section.

[0007] The jet unit is disposed on the support unit, and the top of the jet unit has multiple air outlets;

[0008] The dispersing section includes a dispersing roller, which is rotatably mounted on the support section. Along the vibration direction of the vibrating roller, the height of the top surface of the dispersing roller gradually decreases.

[0009] In the direction of fiber bundle transport, the fiber bundle contacts the bottom surface of the vibrating roller, the top surface of the air jet section, and the top surface of the dispersing roller in sequence.

[0010] In some embodiments, the axial cross-section of the dispersing roller gradually decreases along the axial direction; and / or,

[0011] The axial direction of the dispersing roller has a preset angle with the vibration direction of the vibrating roller.

[0012] In some embodiments, a first seat is provided on the support portion, and both ends of the dispersing roller are rotatably mounted on the first seat.

[0013] The dispersing section further includes a first drive motor, which is disposed on the support section. The output end of the drive motor is connected to the dispersing roller, and the first drive motor is used to drive the dispersing roller to rotate.

[0014] At least one guide rib is provided on the outer peripheral surface of the dispersing roller, and at least one guide rib is spirally wound around the side wall of the dispersing roller.

[0015] In some embodiments, a second seat is further provided on the support portion, the jet section includes a jet roller and an air source device, both ends of the jet roller are disposed on the support portion through the second seat, the axis of the jet roller is parallel to the axis of the vibrating roller, and the air outlet is located at the top of the jet roller;

[0016] The gas source device is connected to the jet roller and is used to supply gas to the jet roller.

[0017] In some embodiments, the jet section further includes two support rollers, which are located on opposite sides above the jet roller.

[0018] In some embodiments, the vibration mechanism includes a second drive motor, an eccentric member, a connecting member, and a third seat.

[0019] The second drive motor is mounted on the support, and the output end of the second drive motor is connected to the first end of the connector through the eccentric member. The second end of the connector is hinged to the third base.

[0020] The third seat is slidably mounted on the support, and the end of the vibrating roller is mounted on the third seat.

[0021] In some embodiments, the vibration mechanism further includes an I-shaped slide rail, which is disposed on the support portion, and the length direction of the I-shaped slide rail is the same as the length direction of the vibrating roller;

[0022] The third seat includes an upright plate and a horizontal plate. The upright plate is disposed on the horizontal plate along the thickness direction of the horizontal plate. The end of the vibrating roller is disposed on the upright plate. The second end of the connector is hinged to the horizontal plate. The horizontal plate is provided with a groove corresponding to the I-shaped slide rail. There is a preset gap between the side wall of the groove and the side wall of the I-shaped slide rail.

[0023] In some embodiments, the support portion is provided with a cavity, and the impregnation portion, the jetting portion, and the dispersing portion are all disposed within the cavity;

[0024] The fiber bundle spreading machine also includes a filament collecting section, which includes an exhaust fan, a filter screen, and a mesh cover. The filter screen is disposed at the bottom of the support section and communicates with the cavity. The mesh cover covers the outside of the filter screen, and the exhaust fan is disposed between the mesh cover and the filter screen.

[0025] In some embodiments, the fiber bundle spreading machine further includes a control unit electrically connected to the impregnation unit, the air jet unit, and the dispersion unit, the control unit being used to control the operating state of the impregnation unit, the air jet unit, and the dispersion unit according to the type of the fiber bundle;

[0026] When the fiber bundle is a multi-fiber bundle, the control unit controls the simultaneous activation of the impregnation unit, the air jetting unit, and the dispersing unit;

[0027] When the fiber bundle is a single fiber bundle, the control unit controls the impregnation unit and the air jet unit to start first, and then controls the dispersion unit to start.

[0028] In some embodiments, the control unit is further configured to control the rotational speed of the dispersing roller;

[0029] When the fiber bundle is a multi-fiber bundle, the control unit controls the dispersing roller to rotate at a first preset speed;

[0030] When the fiber bundle is a single fiber filament, the control unit controls the dispersing roller to rotate at a second preset speed; the second preset speed is greater than the first preset speed.

[0031] The technical solutions provided by the embodiments of this application may include the following beneficial effects: In the fiber bundle spreading machine provided by this application, the impregnation section, the air jet section and the dispersion section provide three different ways to spread the fiber bundle, which has a good spreading effect and is conducive to spreading a single bundle of fiber filaments.

[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0034] Figure 1 This is a perspective view of a fiber bundle spreading machine according to an exemplary embodiment.

[0035] Figure 2 This is a partial perspective view of a fiber bundle spreading machine according to an exemplary embodiment.

[0036] Figure 3 This is a partial cross-sectional view of a fiber bundle spreading machine according to an exemplary embodiment.

[0037] Figure 4 yes Figure 1 Enlarged diagram of point A in the middle.

[0038] Figure 5 yes Figure 2 Enlarged diagram of point B in the middle.

[0039] Figure 6 yes Figure 2 Enlarged diagram of point C in the middle.

[0040] Figure label:

[0041] 1. Support unit; 11. First base; 12. Second base; 13. Frame; 14. Cover; 15. Support leg; 16. Adjusting component;

[0042] 2. Impregnation section; 21. Impregnation tank; 22. Vibrating roller;

[0043] 3. Jet jet section; 31. Jet jet roller; 311. Air outlet; 32. Support roller;

[0044] 4. Dispersion section; 41. Dispersion roller; 411. Guide rib; 42. First drive motor; 43. First pulley; 44. Second pulley; 45. Belt.

[0045] 5. Vibration mechanism; 51. Second drive motor; 52. Eccentric component; 53. Connecting component; 54. Third base; 541. Horizontal plate; 542. Vertical plate; 55. I-beam slide rail;

[0046] 6. Wool collection section; 61. Filter screen; 62. Exhaust fan; 63. Mesh cover. Detailed Implementation

[0047] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0048] Polyacrylonitrile-based carbon fiber is a high-performance new material with advantages such as high specific strength, high specific modulus, low coefficient of thermal expansion, and good corrosion resistance. It is widely used in aerospace, automotive, sports, and medical fields. In the manufacture of composite materials, the degree of fiber bundle spreading is an important factor affecting the performance of prepregs. A large degree of fiber bundle spreading and uniform and stable fiber dispersion help to achieve better resin impregnation of fibers during the prepreg preparation process.

[0049] Fiber bundles are classified into 6K, 12K, 24K, and 48K according to their specifications. A 6K fiber bundle means that it contains 6,000 fibers, a 12K fiber bundle means that it contains 12,000 fibers, and so on. These numbers reflect the number of fibers in the fiber bundle. Unfolding a fiber bundle involves spreading out the multiple fibers in the bundle evenly.

[0050] Currently, the existing fiber spreading machines mainly use mechanical spreading, ultrasonic spreading, and electrostatic spreading. However, mechanical spreading causes severe wear on the fiber surface and results in a smaller spreading width; ultrasonic spreading is unstable and has poor dispersion uniformity; while electrostatic spreading not only causes greater damage to the fiber but is also more difficult to operate and poses significant safety hazards during operation.

[0051] To address the aforementioned technical problems, this application provides a fiber bundle spreading machine, comprising a support section and an impregnation section, an air jet section, and a dispersion section arranged sequentially along the fiber bundle conveying direction. The impregnation section includes an impregnation tank and a vibrating roller. The impregnation tank is mounted on the support section to contain a pre-set solution. The bottom of the vibrating roller is immersed in the pre-set solution, and the vibration direction of the vibrating roller is perpendicular to both the fiber bundle conveying direction and the height direction of the support section. The air jet section is mounted on the support section and has multiple air outlets at its top. The dispersion section includes a dispersion roller, which is rotatably mounted on the support section. Along the vibration direction of the vibrating roller, the height of the top surface of the dispersion roller gradually decreases. In the fiber bundle conveying direction, the fiber bundle sequentially contacts the bottom of the vibrating roller, the top surface of the air jet section, and the top surface of the dispersion roller to achieve fiber spreading. This application describes a three-step fiber bundle unfolding process. First, a vibrating roller, in conjunction with a pre-set solution, initially unfolds the fiber bundle while preventing surface abrasion. Second, the air outlet of the jet unit further unfolds the fiber bundle. As the airflow passes through the fiber bundle, it creates tiny gaps between the fibers, separating any adhered filaments and improving the uniformity of the unfolding. The addition of a dispersing roller further ensures more uniform fiber bundle unfolding and increases the parallelism of the filaments, enhancing the overall unfolding effect.

[0052] According to an exemplary embodiment of this application, such as Figure 1As shown, this embodiment provides a fiber bundle spreading machine, which includes a support part 1, and an impregnation part 2, an air jetting part 3, and a dispersing part 4 arranged sequentially along the fiber bundle conveying direction. The impregnation part 2 and the dispersing part 4 are located at opposite ends of the support part 1, and the air jetting part 3 is located in the middle of the impregnation part 2 and the dispersing part 4. The support part 1 is provided to support the impregnation part 2, the air jetting part 3, and the dispersing part 4.

[0053] like Figure 1 As shown, support 1 is used to provide mounting and support for other structures of the fiber bundle spreading machine. See one example. Figure 1 The support unit includes a frame 13, a cover 14, and four support legs 15. The four support legs 15 are located at the four corners of the bottom of the frame 13 to support it. Each support leg 15 has an adjusting member 16 threaded into its bottom, allowing adjustment of the leg's height by rotating the adjusting member 16 to ensure the frame is level. The frame 13 defines a cavity with an open top. The cross-section of the cavity gradually decreases from top to bottom, forming an inverted frustum shape to facilitate the collection of impurities that fall during fiber spreading. The cover 14 is located on top of the frame 13, and one side of the cover 14 is hinged to the frame 13. The circumferential direction of the hinge axis is perpendicular to the... Figure 1 The x-direction is parallel or perpendicular. In one example, one side of the cover 14 is detachably connected to the frame 13, and the detachment method can be fastener connection or magnetic connection, etc. Figure 1 and Figure 2 As shown, the impregnation section 2, the air jet section 3, and the dispersion section 4 are all located on the frame 13, and when the cover 14 is closed, it encloses the impregnation section 2, the air jet section 3, and the dispersion section 4 within the cavity. When the cover 14 is closed, an inlet channel and an outlet channel are provided between the cover 14 and the frame 13, both of which communicate with the cavity. The fiber bundle enters the fiber spreader through the inlet channel and exits through the outlet channel. The cover design prevents impurities generated during the fiber spreading process from entering the atmosphere and damaging the environment.

[0054] like Figure 2 and Figure 6 As shown, the impregnation section 2 includes an impregnation tank 21 and a vibrating roller 22. The impregnation tank 21 is mounted on the frame 13 and located at the end of the frame 13 (feeding end). The impregnation tank 21 is elongated, and its length direction is parallel to the direction of the roller. Figure 2 The vibration direction of the vibrating roller 22 is perpendicular to both the fiber bundle conveying direction and the height direction of the support 1. The bottom of the vibrating roller 22 is immersed in the pre-set solution, and the fiber bundle passes through it, ensuring complete immersion in the solution and guaranteeing effective fiber spreading. Figure 1 and Figure 2In the y-direction, the vibrating roller 22 drives the fiber bundle to vibrate in the preset solution, enhancing the dispersion effect of the fiber bundle. The preset solution itself can prevent fiber agglomeration by changing the surface properties of the fiber filaments. However, in a static state, the fiber filaments may still have local aggregation. The vibration of the fiber bundle driven by the vibrating roller 22 can break the weak connections between the fiber filaments, increase the frequency of contact between the fiber filaments and the preset solution, and make the fiber filaments better and more evenly wrapped by the preset solution, thereby enhancing the fiber spreading effect. In addition, the vibration of the fiber bundle in the preset solution helps to remove impurities attached to the surface of the fiber filaments, and has a certain cleaning effect on the surface of the fiber filaments.

[0055] The preset solution is a fiber dispersant, a chemical substance that enables fiber bundles to be uniformly dispersed in a liquid medium. Its main principle is to prevent fiber agglomeration by adsorbing onto the surface of the fiber filaments and altering the surface charge or steric hindrance. In some embodiments, the fiber dispersant can be carboxymethyl cellulose or methyl cellulose. Carboxymethyl cellulose or methyl cellulose adsorbs onto the surface of the fiber filaments, giving the surface a negative charge. Based on the principle of like charges repelling each other, the fibers repel each other, thus achieving dispersion.

[0056] like Figure 2 and Figure 5 As shown, the jet unit 3 is mounted on the frame 13, and the top of the jet unit 3 has multiple air outlets 311. Along... Figure 2 In the x-direction, the jetting unit 3 is positioned in the middle of the frame 13. After the fiber bundle exits from the impregnation unit 2, it passes through the top of the jetting unit 3. The air outlet 311 at the top of the jetting unit 3 faces the fiber bundle and jets air, causing a high-speed airflow to be sprayed onto the fiber bundle. The airflow generates shear force between the fibers, which overcomes the friction and cohesion between the fibers, causing them to separate and thus achieving fiber spreading. Furthermore, the airflow from the jetting unit 3 can gradually stretch some bent fibers, providing both stretching and combing effects. The jetting unit 3 primarily uses the force of the airflow to spread the fiber bundle, preventing mechanical damage to the fiber bundle.

[0057] like Figure 2 As shown, the dispersing section 4 includes a dispersing roller 41, which is rotatably mounted on the frame 13. The dispersing roller 41 and the impregnation tank 21 are respectively located at... Figure 2 The two ends of the middle frame 13 in the x-direction. Along the vibration direction of the vibrating roller 22, that is, along... Figure 2In the y-direction, the top surface height of the dispersing roller 41 gradually decreases. After exiting the jet section 3, the fiber bundle enters the dispersing section 4, passing through the top of the dispersing roller 41. Due to the varying top surface height of the dispersing roller 41, the fiber bundle experiences different tensile forces at different positions on the top of the roller 41. The tensile force is relatively small at the lower end of the roller 41, gradually increasing as the fiber bundle moves towards the higher end. This gradually changing tensile force allows the fiber bundle to unfold gradually. Unfolding the fiber bundle through gradual changes in tensile force, rather than sudden, forceful stretching, reduces the risk of fiber breakage and surface damage, further unfolding the fiber bundle while protecting it from damage.

[0058] In the fiber bundle conveying direction, the fiber bundle sequentially contacts the bottom surface of the vibrating roller 22, the top surface of the air jet section 3, and the top surface of the dispersing roller 41. The impregnation section 2, the air jet section 3, and the dispersing section 4 constitute a progressive fiber spreading process. From the initial loosening in the impregnation section 2, to the deep spreading and straightening in the air jet section 3, and then to the uniform dispersion in the dispersing roller 41, each step addresses different states of the fiber bundle, and their coordinated action results in a more ideal fiber spreading effect. Furthermore, during this process, the fiber bundle is not only fully spread, but its straightness and uniformity of dispersion are also improved, allowing the fiber bundle to better perform its properties in subsequent processing.

[0059] In some embodiments, in order to move the fiber bundle stably along the fiber spreader, a traction structure and a tensioning structure can be provided. The traction structure is used to traction the fiber bundle to move, and the tensioning structure is used to adjust the tension of the fiber bundle in the fiber spreader. The traction mechanism and the tensioning structure are existing technologies and will not be described in detail here.

[0060] In this embodiment, the fiber spreading machine of this application spreads the fiber bundle. The cooperation of the vibrating roller and the preset solution performs initial spreading of the fiber bundle and avoids wear on the surface of the fiber bundle. The air outlet of the jet section further spreads the fiber bundle. When the airflow passes through the fiber bundle, it creates tiny gaps between the fibers, causing the mutually adhered fibers to separate and helping to improve the uniformity of fiber bundle spreading. The setting of the dispersing roller makes the fiber bundle spread more evenly and increases the parallelism of the yarn, improving the fiber bundle spreading effect. From the initial loosening of the impregnation section to the deep spreading and straightening of the jet section, and then to the uniform dispersion of the dispersing roller, their cooperation makes the fiber bundle spreading effect more ideal. Moreover, in this process, the fiber bundle is not only fully spread, but the straightness and dispersion uniformity of the fiber bundle are also improved, allowing the fiber bundle to better exert its performance in subsequent processing.

[0061] In one exemplary embodiment, such as Figure 1 and Figure 2As shown, this embodiment provides a fiber bundle spreading machine, which includes a support part 1 and an impregnation part 2, an air jetting part 3, and a dispersing part 4 arranged sequentially along the fiber bundle conveying direction. The impregnation part 2 includes an impregnation tank 21 and a vibrating roller 22. The impregnation tank 21 is disposed on the support part 1, and the vibrating roller 22 is disposed on the support part 1 via a vibration mechanism 5. The bottom of the vibrating roller 22 is immersed in a preset solution, and the vibration direction of the vibrating roller 22 is perpendicular to both the fiber bundle conveying direction and the height direction of the support part 1. The air jetting part 3 is disposed on the support part 1, and the top of the air jetting part 3 has multiple air outlets 311. The dispersing part 4 includes a dispersing roller 41, which is rotatably disposed on the support part 1. Along the vibration direction of the vibrating roller 22, the height of the top surface of the dispersing roller 41 gradually decreases. In the fiber bundle conveying direction, the fiber bundle contacts the bottom surface of the vibrating roller 22, the top surface of the air jetting part 3, and the top surface of the dispersing roller 41 in sequence.

[0062] In some embodiments, such as Figure 2 and Figure 4 As shown, the axial section of the dispersing roller 41 gradually decreases along the axial direction, that is, along the axial direction, the section of the dispersing roller 41 parallel to the bottom surface gradually decreases. The dispersing roller 41 has a conical shape. The axis of the dispersing roller 41 is parallel to the bottom surface. Figure 2 With the y-direction aligned, meaning the axis of the dispersing roller 41 is horizontal, it facilitates mounting the dispersing roller 41 onto the support 1. When inspecting the wear on the surface of the dispersing roller 41 or cleaning fibers entangled on it, the horizontal orientation of the dispersing roller 41 makes it easier for operators to work. In one example, the cross-sectional areas at both ends of the dispersing roller 41 are D1 and D2, respectively, with the area of ​​D1 being approximately three times that of D2.

[0063] In other embodiments, the axial direction of the dispersing roller 41 has a preset angle with the vibration direction of the vibrating roller 22, that is, the dispersing roller 41 has a cylindrical appearance, and the axis of the dispersing roller 41 is set at 15 degrees to 45 degrees with the horizontal plane. The cylindrical roller has universality, making it easier to process and produce.

[0064] In some embodiments, the axial cross-section of the dispersing roller 41 gradually decreases along the axial direction; that is, along the axial direction, the cross-section of the dispersing roller 41 parallel to the bottom surface gradually decreases, and there is a preset angle between the axial direction of the dispersing roller 41 and the vibration direction of the vibrating roller 22. This allows for better adaptation to different production processes and fiber bundle raw materials, reduces equipment adjustment and changeover time, and improves fiber spreading efficiency. In one example, the cross-sectional areas at both ends of the dispersing roller 41 are D1 and D2, respectively, with the area of ​​D1 being approximately three times that of D2.

[0065] In some embodiments, such as Figure 1 , Figure 2 and Figure 4The support part 1 is provided with a first seat 11, and the two ends of the dispersing roller 41 are rotatably mounted on the first seat 11. The first seat 11 can be a bearing seat, and two bearing seats are provided along the [path]. Figure 2 In the y-direction, two bearing seats are respectively set at both ends of the frame 13, and both ends of the dispersing roller 41 are respectively set on the bearing seats. The bearing seats can provide stable support for the dispersing roller 41.

[0066] like Figure 4 As shown, the dispersing section 4 also includes a first drive motor 42, which is mounted on the support section 1. Specifically, the first drive motor 42 is mounted on the outer side wall of the frame 13. The output end of the first drive motor 42 is connected to the dispersing roller 41. Specifically, the output end of the first drive motor 42 is provided with a first pulley 43. One end of the dispersing roller 41 extends out of the bearing seat and is connected to a second pulley 44. The first pulley 43 and the second pulley 44 are connected by a belt 45, so that the first drive motor 42 drives the first pulley 43 to rotate. Under the action of the belt 45, the first pulley 43 drives the second pulley 44 to rotate, thereby driving the dispersing roller 41 to rotate.

[0067] like Figure 2 and Figure 4 As shown, at least one guide rib 411 is provided on the outer periphery of the dispersing roller 41. The guide rib 411 spirally wraps around the sidewall of the dispersing roller 41. When at least two guide ribs 411 are provided, they are evenly distributed circumferentially around the sidewall of the dispersing roller 41. During the rotation of the dispersing roller 41, the guide ribs 411 cause the fiber bundle to tend to distribute along a spiral line, preventing local accumulation of fibers. The spiral winding arrangement of the guide ribs 411 increases the contact area and friction between the fiber bundle and the dispersing roller 41. Greater friction allows the fiber bundle to be better dispersed as the dispersing roller 41 rotates, improving the efficiency of fiber spreading. Furthermore, during the rotation of the dispersing roller 41, the guide ribs 411 cause the fibers to mix at different positions and layers. The fibers continuously move along the spiral path of the guide ribs 411, resulting in more uniform fiber spreading.

[0068] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, a second seat 12 is also provided on the support part 1. The jetting part 3 includes a jetting roller 31 and an air source device. Both ends of the jetting roller 31 are mounted on the support part 1 via the second seat 12. The axis of the jetting roller 31 is parallel to the axis of the vibrating roller 22, and the air outlet 311 is located at the top of the jetting roller 31. The second seat 12 can be a support block or a bearing seat. There are two second seats 12, and the two second seats 12 are arranged along... Figure 2The air jet rollers 31 are positioned at both ends of the support 1 along the y-direction, and both ends of the air jet rollers 31 are positioned on the second base 12. An air source device, such as an air compressor or air pump, supplies air to the air jet rollers 31. The air is ejected from the air outlets 311 of the air jet rollers 31 and directed towards the fiber bundles above for unwinding. The size of the air outlets 311 corresponds to the specifications of the fiber bundles and is proportional to the number of fiber bundles. The size of the air outlets 311 can be 0.2-0.8 cm. In one example, when the fiber bundle specification is 48K, an air outlet 311 with a size of 0.8 cm can be selected. In another example, when the fiber bundle specification is 6K, an air outlet 311 with a size of 0.2 cm can be selected.

[0069] In some embodiments, such as Figure 2 and Figure 5 As shown, the jet section 3 also includes two support rollers 32, which are located on both sides above the jet roller 31, that is, both support rollers 32 are located above the jet roller 31 and along... Figure 2 In the x-direction, two support rollers 32 are located on both sides of the air jet roller 31. The arrangement of the two support rollers 32 avoids the fiber bundle from contacting the air jet roller 31, thereby reducing damage to the fiber bundle.

[0070] In some embodiments, such as Figure 1 , Figure 2 and Figure 6 As shown, the vibration mechanism 5 includes a second drive motor 51, an eccentric member 52, a connecting member 53, and a third seat 54. The second drive motor 51 is mounted on the side wall of the support portion 1. The output end of the second drive motor 51 is hinged to the first end of the connecting member 53 via the eccentric member 52, and the second end of the connecting member 53 is hinged to the third seat 54. The eccentric member 52 can be an eccentric bearing or an eccentric sleeve. The output end of the second drive motor 51 drives the connecting member 53 to rotate. The first connecting member 53 is hinged to the first seat 11, resulting in the first connecting member 53 driving the third seat 54 to vibrate.

[0071] like Figure 6As shown, the vibration mechanism 5 also includes an I-shaped slide rail 55. The third seat 54 and the I-shaped slide rail 55 are referred to as a vibration group. There are two vibration groups, which are respectively set at both ends of the vibrating roller 22. The I-shaped slide rail 55 is located outside the impregnation tank 21, and the length direction of the I-shaped slide rail 55 is the same as the axial direction of the vibrating roller 22. The third seat 54 includes a vertical plate 542 and a horizontal plate 541. The vertical plate 542 is set on the horizontal plate 541 along the thickness direction. The end of the vibrating roller 22 is set on the vertical plate 542. The second end of the connecting piece 53 is hinged to the horizontal plate 541. The bottom of the horizontal plate 541 is provided with a groove corresponding to the I-shaped slide rail 55. There is a preset gap between the side wall of the groove and the side wall of the I-shaped slide rail 55. The preset gap is set to allow the horizontal plate 541 to vibrate, thereby driving the vertical plate 542 and the vibrating roller 22 to vibrate. The vibrating roller 22 vibrates not only along its axial direction but also slightly along the direction of fiber bundle movement, thus strengthening the loose fiber bundle.

[0072] In some embodiments, such as Figure 1 and Figure 3 As shown, the fiber bundle spreading machine also includes a filament collection unit 6, which includes an exhaust fan 62, a filter screen 61, and a mesh cover 63. The filter screen 61 is located at the bottom of the support unit 1 and communicates with the cavity. The mesh cover 63 covers the outside of the filter screen 61, and the exhaust fan 62 is located between the mesh cover 63 and the filter screen 61. The exhaust fan 62 is used to exhaust the air in the cavity through the filter screen 61 and the mesh cover 63. At the same time, the filaments generated by the fiber bundle are suspended in the cavity and moved to the filter screen 61 by the airflow, thus collecting the airborne filaments on the filter screen 61. This facilitates the collection of filaments, reduces environmental pollution, and lowers the fire hazard. The mesh cover 63 also prevents external impurities from entering the cavity and contaminating the fiber bundle.

[0073] In some embodiments, the fiber bundle spreading machine further includes a control unit, which is electrically connected to the impregnation unit 2, the air jet unit 3 and the dispersion unit 4. The control unit is used to control the working state of the impregnation unit 2, the air jet unit 3 and the dispersion unit 4 according to the type of fiber bundle.

[0074] When the fiber bundle consists of multiple fiber filaments, the control unit simultaneously activates the impregnation unit 2, the air jet unit 3, and the dispersion unit 4. This control method is applicable when there is only one fiber bundle with a specification greater than 12K, or when there are two or more fiber bundles. Processing multiple fiber bundles involves a larger volume; simultaneously activating these components allows for the processing of more fiber bundles per unit time, significantly improving the efficiency of the fiber spreader.

[0075] When the fiber bundle is a single bundle of fibers, the control unit first activates the impregnation unit 2 and the air jet unit 3. Then, when the width of the unfolded fiber bundle is half of the preset width, the dispersion unit 4 is activated. Specifically, when there is only one fiber bundle and its specification is less than or equal to 12K, the single-bundle fiber control method is used. For a single bundle of fibers, the impregnation unit 2 and the air jet unit 3 are activated first, and the dispersion unit 4 is activated after the fiber bundle has initially unfolded. This allows the fiber bundle to unfold under relatively gentle conditions, preventing fiber breakage due to excessive tension from the dispersion roller 41. This reduces the risk of fiber bundle damage and effectively prevents the fiber bundle from being damaged by excessive physical forces in the initial stage.

[0076] In some embodiments, the control unit controls the rotation of the dispersing roller 41. When the fiber bundle consists of multiple fiber bundles, the control unit controls the dispersing roller 41 to rotate at a first preset speed, which is 5-20 r / min. When the fiber bundle consists of a single fiber bundle, the control unit controls the dispersing roller 41 to rotate at a second preset speed, which is 20-60 r / min. The second preset speed is greater than the first preset speed. When the fiber bundle consists of multiple fiber bundles, its overall structure is relatively complex, and the fibers are more likely to intertwine. Rotating the dispersing roller 41 at the first preset speed allows for gentler processing of the fiber bundle. The relatively low first preset speed avoids problems such as excessive stretching, breakage, or entanglement of the fiber bundle due to excessive rotation speed. When the fiber bundle consists of a single fiber bundle, its structure is relatively simple, and its strength and toughness are relatively high. In this case, controlling the dispersing roller 41 to rotate at the second preset speed, which is greater than the first preset speed, allows for more effective and rapid dispersion of the single fiber bundle. Since single-bundle fiber filaments do not have the complex situation of multiple fiber bundles entangled with each other, increasing the rotation speed can speed up the processing, improve production efficiency, and at the same time ensure that the single-bundle fiber filaments achieve the required uniformity and dispersion effect during the dispersion process.

[0077] Example 1: Using a fiber bundle spreading machine for spreading multiple fiber bundles.

[0078] Open the machine cover 14, and the end of the traction fiber bundle passes sequentially from below the vibrating roller 22, above the air jet roller 31, and above the dispersing roller 41, maintaining the fiber bundle in a taut state. When the fiber bundle passes below the coarse roller, it is immersed in the preset solution in the impregnation tank 21. Close the machine cover 14, and simultaneously turn on the first drive motor 42, the second drive motor 51, and the exhaust fan 62. The first drive motor 42 drives the connector 53 to rotate, the connector 53 drives the third seat 54 to vibrate, and the third seat 54 drives the vibrating roller 22 to vibrate in the preset solution in the impregnation tank 21, so that the fiber bundle is fully wrapped in the preset solution and undergoes preliminary fiber spreading. When the fiber bundle passes through the air jet roller 31, the airflow further spreads the fiber bundle. When the fiber bundle passes through the dispersing roller 41, the dispersing roller 41 performs the final fiber spreading on the fiber bundle until the fiber bundle meets the conditions. The time the fiber bundle spends on the fiber spreading machine is controlled according to the degree of fiber spreading. If a greater degree of fiber spreading is required, the fiber bundle stays on the fiber spreading machine for a longer time. If a smaller degree of fiber spreading is required, the fiber bundle stays on the fiber spreading machine for a shorter time.

[0079] Example 2: Using a fiber bundle spreading machine for spreading single bundles of fibers.

[0080] The difference between this and Embodiment 1 is that when the fiber bundle passes through the fiber spreader, the fiber bundle is close to the end of the disperser roller 41 with a higher height. The control unit first starts the second drive motor 51 and the exhaust fan 62 at the same time. That is, the impregnation unit 2 and the air jet unit 3 first spread the fiber bundle. When the fiber bundle is spread to half of the preset width, the first drive motor 42 is then started, that is, the disperser 4 is started again.

[0081] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0082] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A fiber bundle spreading machine, characterized in that, It includes a support section, and an impregnation section, an air-jet section, and a dispersion section arranged sequentially along the fiber bundle conveying direction; The impregnation section includes an impregnation tank and a vibrating roller. The impregnation tank is disposed on the support section to contain a preset solution. The vibrating roller is disposed on the support section via a vibration mechanism. The bottom of the vibrating roller is immersed in the preset solution. The vibration direction of the vibrating roller is perpendicular to both the conveying direction of the fiber bundle and the height direction of the support section. The jet unit is disposed on the support unit, and the top of the jet unit has multiple air outlets; The dispersing section includes a dispersing roller, which is rotatably mounted on the support section. Along the vibration direction of the vibrating roller, the height of the top surface of the dispersing roller gradually decreases. In the direction of fiber bundle delivery, the fiber bundle contacts the bottom surface of the vibrating roller, the top surface of the air jet section, and the top surface of the dispersing roller in sequence. The axial cross-section of the dispersing roller gradually decreases along the axial direction; and / or, The axial direction of the dispersing roller and the vibration direction of the vibrating roller have a preset angle; The support is provided with a first seat, and the two ends of the dispersing roller are rotatably mounted on the first seat; The dispersing section further includes a first drive motor, which is disposed on the support section. The output end of the drive motor is connected to the dispersing roller, and the first drive motor is used to drive the dispersing roller to rotate. At least one guide rib is provided on the outer peripheral surface of the dispersing roller, and at least one guide rib is spirally wound around the side wall of the dispersing roller. The vibration mechanism includes a second drive motor, an eccentric component, a connecting component, and a third base. The second drive motor is mounted on the support, and the output end of the second drive motor is connected to the first end of the connector through the eccentric member. The second end of the connector is hinged to the third base. The third seat is slidably mounted on the support, and the end of the vibrating roller is mounted on the third seat. The fiber bundle spreading machine also includes a control unit, which is electrically connected to the impregnation unit, the air jetting unit, and the dispersing unit. The control unit is used to control the working status of the impregnation unit, the air jetting unit, and the dispersing unit according to the type of the fiber bundle. When the fiber bundle is a multi-fiber bundle, the control unit controls the simultaneous activation of the impregnation unit, the air jetting unit, and the dispersing unit; When the fiber bundle is a single fiber bundle, the control unit controls the impregnation unit and the air jet unit to start first, and then controls the dispersion unit to start.

2. The fiber bundle spreading machine according to claim 1, characterized in that, The support is also provided with a second seat. The jet part includes a jet roller and an air source device. The two ends of the jet roller are mounted on the support through the second seat. The axis of the jet roller is parallel to the axis of the vibrating roller. The air outlet is located at the top of the jet roller. The gas source device is connected to the jet roller and is used to supply gas to the jet roller.

3. The fiber bundle spreading machine according to claim 2, characterized in that, The jet section also includes two support rollers, which are located on both sides above the jet roller.

4. The fiber bundle spreading machine according to claim 3, characterized in that, The vibration mechanism also includes an I-shaped slide rail, which is disposed on the support portion, and the length direction of the I-shaped slide rail is the same as the length direction of the vibration roller; The third seat includes an upright plate and a horizontal plate. The upright plate is disposed on the horizontal plate along the thickness direction of the horizontal plate. The end of the vibrating roller is disposed on the upright plate. The second end of the connector is hinged to the horizontal plate. The horizontal plate is provided with a groove corresponding to the I-shaped slide rail. There is a preset gap between the side wall of the groove and the side wall of the I-shaped slide rail.

5. The fiber bundle spreading machine according to claim 1, characterized in that, The support portion is provided with a cavity, and the impregnation portion, the jetting portion and the dispersing portion are all disposed within the cavity; The fiber bundle spreading machine also includes a filament collecting section, which includes an exhaust fan, a filter screen, and a mesh cover. The filter screen is disposed at the bottom of the support section and communicates with the cavity. The mesh cover covers the outside of the filter screen, and the exhaust fan is disposed between the mesh cover and the filter screen.

6. The fiber bundle spreading machine according to claim 1, characterized in that, The control unit is also used to control the rotational speed of the dispersing roller; When the fiber bundle consists of multiple fiber filaments, the control unit controls the dispersing roller to rotate at a first preset speed; When the fiber bundle is a single fiber filament, the control unit controls the dispersing roller to rotate at a second preset speed; The second preset speed is greater than the first preset speed.

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