A device for removing hairiness from a precursor and a carbon fiber precursor manufacturing apparatus

Abstract

This application relates to the field of carbon fiber tow production technology, and in particular to a raw fiber defuzzing device and carbon fiber raw fiber preparation equipment. The raw fiber defuzzing device includes a duct and an air inlet assembly. The two ends of the duct are connected, and the duct is positioned along the path of the fiber bundle released from the yarn release frame during the raw fiber unwinding process, allowing the fiber bundle to pass through the interior of the duct. An air inlet assembly is provided on the side wall of the duct, which supplies air into the duct and creates a cyclone airflow inside. Therefore, when the fiber bundle passes through the duct, the fuzz floating on the surface of the fiber bundle can be wrapped around the surface of the fiber bundle under the action of the cyclone inside the duct, thereby reducing the amount of floating fuzz and lowering the probability of tangling and adhesion between adjacent fiber bundles in subsequent processing steps. Simultaneously, after the fuzz is wrapped around the surface of the fiber bundle, it can also suppress broken filaments within the fiber bundle from floating on the surface and forming fuzz to a certain extent.

Description

Technical Field

[0001] This application relates to the field of carbon fiber tow production technology, and in particular to a device for removing fuzz from precursor fibers and equipment for preparing carbon fiber precursor fibers. Background Technology

[0002] Carbon fiber, as a high-performance material, boasts excellent physicochemical properties such as high strength, high modulus, light weight, and corrosion resistance, leading to its widespread application in wind power, hydrogen storage, aerospace, transportation, and sports. However, during carbon fiber production, the finished product often exhibits varying degrees of fiber breakage due to the influence of raw material purity, precursor fiber preparation process, and carbon fiber filament preparation process. Especially during the precursor fiber preparation stage, broken fibers can easily become entangled on the roller surface during subsequent processing, not only affecting the normal operation of equipment but also potentially causing safety accidents. Furthermore, the fuzz on the final fiber bundle surface can lead to instability in the processing of carbon fiber composite materials, further impacting their performance.

[0003] Currently, existing technologies mainly reduce fiber breakage and fuzz problems by improving raw material purity, refining the raw fiber production process, or adding fuzz removal devices. However, the raw fiber preparation process is complex and cannot completely avoid the generation of air pockets in the raw fiber, leaving potential risks for subsequent fiber breakage. In addition, while installing fuzz removal devices on the roller surface can reduce the probability of equipment failure caused by fuzz entanglement on the roller, it cannot solve the problem of fuzz causing entanglement and bundle formation between fiber bundles during fiber bundle operation, and may even exacerbate fuzz formation. Utility Model Content

[0004] The purpose of this invention is to provide a filament removal device and a carbon fiber filament preparation equipment to reduce the amount of filaments on the surface of the filament bundle to a certain extent and avoid the phenomenon of filaments between the filament bundles tangling and sticking together.

[0005] This utility model provides a raw silk lint removal device, including a blower and an air inlet assembly;

[0006] The two ends of the air duct are open, and the air duct is used for the filament bundles released during the unwinding process of the raw filament to pass through;

[0007] The air intake assembly is connected to the air duct and is used to connect with an external air supply device to deliver air into the air duct and create a cyclone airflow inside the air duct.

[0008] Furthermore, the air intake assembly includes an air intake pipe, one end of which is connected to the side wall of the air duct and communicates with the interior of the air duct, and the other end of which is used to communicate with the external air supply equipment.

[0009] Within the radial plane of the air duct, there is a first predetermined angle between the axial projection of the air inlet pipe and the radial direction of the air duct at its location, the first predetermined angle being greater than 0 and less than or equal to 90°.

[0010] Furthermore, the axis of the air inlet pipe and the axis of the air duct have a second predetermined angle that is acute.

[0011] Furthermore, one end of the air duct is the inlet end for the filament bundle to enter, and the connection between the air inlet pipe and the air duct is located on the side wall of the air duct facing the inlet end;

[0012] The air inlet pipe is connected to the air duct at one end, which is the first end, and the other end is the second end. The second end of the air inlet pipe points towards the first end of the air inlet pipe along the threading direction of the air duct.

[0013] Furthermore, the first predetermined angle is between 15° and 60°.

[0014] Furthermore, the second predetermined angle is 30° to 55°.

[0015] Furthermore, the air inlet pipe is equipped with a wind speed control valve.

[0016] Furthermore, the air duct is provided with a plurality of air inlet components at intervals along its circumference.

[0017] Furthermore, the air duct is provided with multiple air inlet components at intervals along its length.

[0018] This utility model also provides a carbon fiber precursor preparation equipment, including the precursor fiber defuzzing device described in any of the above-mentioned claims.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The fiber de-fuzzing device provided by this utility model includes a duct and an air inlet assembly. In the carbon fiber production process, after the raw fiber is prepared, it needs to be unwound from the raw fiber bobbin using a yarn unwinding frame. This involves unwinding the raw fiber from the bobbin and guiding the unwound fiber bundle so that it can smoothly enter subsequent processing steps. The two ends of the duct are open, and the duct is positioned along the path of the fiber bundle released from the yarn unwinding frame during the fiber unwinding process, allowing the fiber bundle to pass through the interior of the duct, for example, through the central area inside the duct. An air inlet assembly is provided on the side wall of the duct, connected to the interior of the duct, and also capable of connecting to an external air supply device to deliver air into the duct and create a cyclone-like airflow within it.

[0021] Therefore, when the filaments pass through the air duct, the fuzz floating on the surface of the filaments can be wrapped around the surface of the filaments under the action of the vortex inside the air duct, thereby reducing the amount of fuzz floating and reducing the probability of fuzz entanglement and adhesion between adjacent filaments in subsequent processing steps; at the same time, after the fuzz is wrapped around the surface of the filaments, it can also suppress the broken filaments in the filaments from floating on the surface of the filaments and forming fuzz to a certain extent.

[0022] This utility model also provides a carbon fiber precursor preparation equipment, including the precursor fiber defuzzing device, so the carbon fiber precursor preparation equipment also has the beneficial effects of the precursor fiber defuzzing device. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A schematic diagram showing the positions of the raw silk depilatory device and the silk bundle provided in this embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the raw silk depilation device provided in an embodiment of this utility model from a first-view perspective;

[0026] Figure 3 This is a structural schematic diagram of the raw silk depilatory device provided in an embodiment of the present invention from a second perspective.

[0027] Figure label:

[0028] 1-Air duct, 2-Air inlet pipe, 3-Wind speed control valve, 4-Wire bundle. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0030] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0031] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following reference Figures 1 to 3 This application describes a raw fiber depilation device and a carbon fiber raw fiber preparation equipment according to some embodiments.

[0035] This application provides a device for removing lint from raw silk, such as... Figures 1 to 3 As shown, the raw silk filament removal device includes a blower 1 and an air inlet assembly.

[0036] In the carbon fiber production process, after the precursor yarn is prepared, it needs to be unwound from the precursor yarn bobbin using a yarn unwinding frame. This involves unwinding the precursor yarn from the bobbin and guiding the unwound yarn bundle 4 so that it can smoothly enter subsequent processing steps. The two ends of the air duct 1 are open, and the air duct 1 is positioned along the path of the yarn bundle 4 released from the yarn unwinding frame during the precursor yarn unwinding process, allowing the yarn bundle 4 to pass through the interior of the air duct 1, for example, through the central area inside the air duct 1. An air inlet assembly is provided on the side wall of the air duct 1, which is connected to the interior of the air duct 1 and can also be connected to an external air supply device to deliver air into the air duct 1, creating a cyclone-like airflow inside.

[0037] Therefore, when the filament bundle 4 passes through the air duct 1, the filaments floating on the surface of the filament bundle 4 can be wrapped around the surface of the filament bundle 4 under the action of the cyclone inside the air duct 1, thereby reducing the amount of filaments floating and reducing the probability of filaments entangled and stuck together between adjacent filament bundles 4 in subsequent processing steps; at the same time, after the filaments are wrapped around the surface of the filament bundle 4, they can also suppress the broken filaments in the filament bundle 4 from floating on the surface of the filament bundle 4 and forming filaments to a certain extent.

[0038] In one embodiment of this application, preferably, the air intake assembly includes an air intake pipe 2, one end of which is connected to the side wall of the air duct 1 and communicates with the interior of the air duct 1, and the other end of which is used to communicate with an external air supply device, so that the external air supply device can deliver airflow into the air duct 1 through the air intake pipe 2.

[0039] The air inlet duct 2 is offset from the radial direction of the air duct 1 at its location by a first predetermined angle. Specifically, in the radial plane of the air duct 1, that is, in the plane perpendicular to the axis of the air duct 1, there is a first predetermined angle A between the projection of the axis of the air inlet duct 2 and the radial direction of the air duct 1 at its location (i.e., the radial direction of the air duct 1 where the axis of the air inlet duct 2 intersects with the side wall of the air duct 1). The first predetermined angle A is greater than 0 and less than or equal to 90°. Therefore, the airflow delivered into the air duct 1 through the air inlet duct 2 will not blow directly onto the filament bundle 4 passing through the central region of the air duct 1, but will form a vortex along the duct wall, thereby preventing the broken filaments inside the filament bundle 4 from being blown out of the filament bundle 4 and forming fuzz; at the same time, it also allows the fuzz on the surface of the filament bundle 4 to be wrapped around the surface of the filament bundle 4 under the action of the vortex.

[0040] Preferably, the first predetermined angle A is 15° to 60°, such as 20°, 30°, or 45°. This ensures that the cyclone formed inside the air duct 1 has a suitable swirling angle, so as to avoid blowing out the broken filaments inside the filament bundle 4 and to allow the fuzz on the surface of the filament bundle 4 to be wrapped around the surface of the filament bundle 4 under the action of the cyclone.

[0041] In this embodiment, preferably, the axis of the air inlet pipe 2 and the axis of the air duct 1 form a second predetermined angle B at an acute angle, so that the airflow delivered into the air duct 1 through the air inlet pipe 2 tends to blow from one end of the air duct 1 to the other end, so that the wool fibers can spirally wind around the surface of the fiber bundle 4. Preferably, the second predetermined angle B is 30° to 55°, such as 40°, 45°, or 50°.

[0042] In this embodiment, preferably, the end of the air duct 1 used to supply the yarn bundle 4 is the yarn inlet end of the air duct 1, and the connection point between the air inlet pipe 2 and the air duct 1 is located on the side wall of the air duct 1 near the yarn inlet end; simultaneously, the end of the air inlet pipe 2 connected to the air duct 1 is the first end of the air inlet pipe 2, and the other end of the air inlet pipe 2 is the second end, with the second end of the air inlet pipe 2 pointing towards the first end of the air inlet pipe 2 along the yarn passing direction of the air duct 1. Specifically, taking a vertically arranged air duct 1 as an example, the lower end of the air duct 1 is the yarn inlet end, the upper end of the air duct 1 is the yarn outlet end, and the yarn passing direction of the air duct 1 is a vertical direction from bottom to top. The air inlet pipe 2 is arranged below the air duct 1, and the first end of the air inlet pipe 2 is located above its second end, so that the air inlet pipe 2 blows airflow into the air duct 1 from bottom to top.

[0043] In this embodiment, preferably, the air inlet pipe 2 is provided with a wind speed control valve 3, so as to control the opening and closing of the air inlet pipe 2 and the flow rate of the airflow in the air inlet pipe 2, thereby adjusting the wind speed in the air duct 1, so as to control the state of the filaments on the filament bundle 4.

[0044] In this embodiment, preferably, a plurality of air inlet components are provided at intervals along the circumference of the air duct 1, so that a stable cyclone airflow is formed inside the air duct 1 through the cooperation of the plurality of circumferentially arranged air inlet components.

[0045] In this embodiment, preferably, a plurality of air inlet components are provided at intervals along the length of the air duct 1, so that a stable cyclone airflow is formed inside the air duct 1 through the cooperation of the plurality of axially arranged air inlet components.

[0046] Of course, multiple rings of air intake components can also be arranged on the air duct 1 along the length of the air duct 1, and each ring of air intake components includes multiple air intake components distributed at intervals along the circumference of the air duct 1.

[0047] This application also provides a carbon fiber precursor preparation device, including the precursor fiber defuzzing device of any of the above embodiments.

[0048] In this embodiment, the carbon fiber precursor preparation equipment includes a precursor fiber defuzzing device, and therefore the carbon fiber precursor preparation equipment has all the beneficial effects of the precursor fiber defuzzing device, which will not be described in detail here.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for removing lint from raw silk, characterized in that, Includes the air duct and air intake assembly; The two ends of the air duct are open, and the air duct is used for the filament bundles released during the unwinding process of the raw filament to pass through; The air intake assembly is connected to the air duct and is used to connect with an external air supply device to deliver air into the air duct and create a cyclone airflow inside the air duct.

2. The raw silk depilatory device according to claim 1, characterized in that, The air intake assembly includes an air intake pipe, one end of which is connected to the side wall of the air duct and communicates with the interior of the air duct, and the other end of which is used to communicate with the external air supply equipment. In the radial plane of the air duct, there is a first predetermined angle between the axial projection of the air inlet pipe and the radial direction of the air duct at its location, the first predetermined angle being greater than 0 and less than or equal to 90°.

3. The raw silk depilatory device according to claim 2, characterized in that, The axis of the air inlet pipe and the axis of the air duct have a second predetermined angle that is acute.

4. The raw silk depilatory device according to claim 3, characterized in that, One end of the air duct is the inlet end for the filament bundle to enter, and the connection between the air inlet pipe and the air duct is located on the side wall of the air duct facing the inlet end. The air inlet pipe is connected to the air duct at one end, which is the first end, and the other end is the second end. The second end of the air inlet pipe points towards the first end of the air inlet pipe along the threading direction of the air duct.

5. The raw silk depilatory device according to claim 2, characterized in that, The first predetermined angle is between 15° and 60°.

6. The raw silk depilatory device according to claim 3, characterized in that, The second predetermined angle is 30° to 55°.

7. The raw silk depilatory device according to claim 2, characterized in that, The air inlet pipe is equipped with a wind speed control valve.

8. The raw silk depilatory device according to claim 1, characterized in that, The air duct is provided with a plurality of air inlet components at intervals along its circumference.

9. The raw silk depilatory device according to claim 1, characterized in that, The air duct is provided with multiple air inlet components at intervals along its length.

10. A carbon fiber precursor preparation device, characterized in that, The device for removing lint from raw silk, as described in any one of claims 1 to 9.

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