Pneumatic filament suction device for carbon fiber tows

Abstract

The invention provides a pneumatic yarn suction device for carbon fiber tows, and relates to the field of carbon fiber manufacturing, the pneumatic yarn suction device comprises a control assembly, the control assembly comprises an adjusting mechanism and a flow guide mechanism, the use angle of the flow guide mechanism can be adjusted through the adjusting mechanism, and the use angle of the flow guide mechanism is the airflow angle when airflow is blown into a yarn suction channel; the airflow acting direction is dynamically controllable, so that the device can adapt to manufacturing and using of carbon fiber tows of different specifications, meanwhile, by reducing the angle of the airflow blown into the yarn suction channel, turbulent flow can be reduced, normal yarn suction, traction, conveying and other operations can be guaranteed, the device can be assembled and used on different types of carbon fiber tow production lines, and the production efficiency is improved. The problems that the blowing-in direction and angle of air flow in an existing pneumatic filament suction structure are fixed, the existing pneumatic filament suction structure cannot be suitable for processing and using of carbon fiber tows of different specifications, stable traction is difficult, the tows are prone to deviation and breakage, and the quality of the tows is affected are solved.

Description

Technical Field

[0001] This invention relates to the field of carbon fiber manufacturing technology, and in particular to a pneumatic fiber suction device for carbon fiber bundles. Background Technology

[0002] Carbon fiber tow is composed of thousands of carbon fiber monofilaments with a diameter of several micrometers bundled together. It is the core raw material for preparing high-performance carbon fiber composite materials. In its manufacturing process, the pneumatic fiber suction structure uses negative air pressure to stably pull and guide the fiber tow, avoid fiber deviation and entanglement, assist in fiber sorting and arrangement, ensure the uniformity and continuity of the fiber tow, and realize an efficient and high-quality carbon fiber tow production process. For example, the patent application number CN201310104399.3 discloses a pneumatic fiber suction device for carbon fiber production, which consists of an air inlet pipe, a fiber suction port, a fiber outlet pipe and a jacket. The lower end of the fiber suction port extends outward with a first support platform. The upper opening of the fiber outlet pipe corresponds to the fiber suction port, and there is a gap between the fiber outlet pipe and the fiber suction port. The jacket is fitted outside the fiber outlet pipe and has a sealed annular chamber between it and the fiber outlet pipe. The upper end of the jacket has a second support platform extending outward. The second support platform is fixedly connected to the first support platform. One end of the air inlet pipe is connected to compressed air, and the other end is connected to the jacket and communicates with the annular chamber. In use, compressed air enters the annular chamber through the inlet pipe, then enters the outlet tube through the gap between the outlet tube and the suction port, forming a downward jet that moves the carbon fiber bundle downwards. The device of this invention is simple to operate, reduces labor intensity, and improves production efficiency.

[0003] As with the existing pneumatic suction structures used in carbon fiber tow manufacturing, the direction and angle of the internal airflow are fixed, making it unsuitable for processing carbon fiber tows of different specifications. This results in unstable traction, easily leading to tow deviation and breakage. Furthermore, the airflow entering the outlet channel is nearly perpendicular to the outlet channel, easily generating turbulence, affecting the normal traction of the tow. Turbulence causes unstable airflow pressure, resulting in fluctuating suction force on the tow, easily causing tow deviation, shaking, or even breakage. Simultaneously, turbulent airflow reduces the tow splitting effect, affecting tow quality. This design also lacks flexibility and practicality. Summary of the Invention

[0004] This invention relates to a pneumatic fiber suction device for carbon fiber tow, which has a control component. The operating angle of the flow guiding mechanism can be adjusted by an adjustment mechanism. The operating angle of the flow guiding mechanism is the angle of the airflow when it blows into the fiber suction channel. The direction of airflow is dynamically controllable, thereby adapting to the manufacturing and use of carbon fiber tows of different specifications. At the same time, by reducing the angle of the airflow blowing into the fiber suction channel, the occurrence of turbulence can be reduced, ensuring normal fiber suction, traction and conveying operations. It can be installed and used on different types of carbon fiber tow production lines, reducing the cost of production line transformation for enterprises. It has extremely high flexibility, adaptability and practicality.

[0005] This invention provides a pneumatic fiber suction device for carbon fiber tow, specifically including: a suction base and a control component; the carbon fiber tow extends from the top of the suction base into the interior of the suction base, and the control component includes an adjustment mechanism and a flow guiding mechanism; The adjustment mechanism includes an adjustment knob, a positioning block, and a control column. The adjustment knob is rotatably connected to the top of the suction seat, and the positioning block is inserted into the top of the suction seat. The control column is fixedly installed at the bottom of the positioning block and is inserted into the interior of the suction seat. The flow guiding mechanism includes a flow guiding ball seat and a linkage rod. The flow guiding ball seat is rotatably connected to the interior of the suction seat, and the linkage rod is rotatably connected to the interior of the suction seat.

[0006] Furthermore, the suction seat has a suction channel inside, and the top of the suction channel is trumpet-shaped. The suction seat also has an airflow channel on the outside, and the airflow channel and the suction channel are connected by a flow guiding mechanism.

[0007] Furthermore, the airflow channel consists of an air intake channel, an air distribution channel, and a flow divider channel. The air intake channel is fixedly installed on the side of the wire suction seat and is connected to the air compression equipment through a pipe. The air distribution channel is an annular channel, and the bottom end of the flow divider channel is connected to the air distribution channel. The flow guide mechanism is set on the side of the top of the flow divider channel.

[0008] Furthermore, the diversion channel, control column, and flow guiding mechanism together form a guiding module, which consists of six groups arranged in a circular array inside the wire suction seat.

[0009] Furthermore, the guide ball seat has a guide channel inside, and the two ends of the guide channel connect the diversion channel and the wire suction channel.

[0010] Furthermore, the positioning block has a threaded block on its side, and the threaded block is screwed into the inside of the adjusting seat by threads.

[0011] Furthermore, the bottom of the control column is provided with a control protrusion, and the outside of the linkage rod is provided with a linkage groove, with the control protrusion inserted into the inside of the linkage groove.

[0012] Furthermore, the bottom of the guide ball seat is provided with a guide gear, and the bottom of the linkage rod is provided with a positioning gear, and the guide gear and the positioning gear mesh to drive each other.

[0013] Furthermore, the exterior of the adjustment knob is provided with anti-slip texture.

[0014] This invention provides a pneumatic fiber suction device for carbon fiber tow, which has the following advantages: 1. The operating angle of the flow guiding mechanism can be adjusted through the adjustment mechanism. The operating angle of the flow guiding mechanism is the angle of the airflow when it blows into the inside of the fiber suction channel. The direction of airflow is dynamically controllable, so it can adapt to the manufacturing and use of carbon fiber tows of different specifications. At the same time, by reducing the angle of the airflow blowing into the fiber suction channel, the occurrence of turbulence can be reduced, ensuring normal fiber suction, traction and conveying operations. It can be installed and used on different types of carbon fiber tow production lines, reducing the cost of production line transformation for enterprises and improving flexibility, adaptability and practicality.

[0015] 2. Multi-angle airflow control is achieved through six sets of ring-shaped arrayed guide modules. The rotation of the adjusting base drives the positioning block and control column to move up and down, which in turn drives the guide ball seat to rotate via the linkage rod, changing the angle of the guide channel to adapt to different specifications of filament bundles. For narrow filament bundles, a small included angle is used to concentrate the airflow and avoid the dispersion of suction force, while for wide filament bundles, a large included angle is used to push away sticky single filaments. This can dynamically compensate for production fluctuations. By adjusting the angle to pull high-speed filament bundles, and adjusting the angle to gently handle areas of abnormal tension, the top design of the trumpet-shaped filament suction channel facilitates the insertion of filament bundles. The ring-shaped air distribution channel ensures that compressed air is evenly distributed to each guide module, forming a stable jet negative pressure, achieving efficient filament suction and traction, avoiding turbulence interference, and significantly improving production flexibility, stability and filament bundle quality.

[0016] 3. The top of the fiber suction channel adopts a trumpet-shaped design, which greatly reduces the difficulty of alignment when the carbon fiber tow is inserted. Even in high-speed production, the tow can enter the channel quickly and smoothly, reducing jamming or fiber breakage caused by initial positioning deviation. The airflow channel on the outside of the fiber suction seat consists of an air inlet channel, an air distribution channel, and a flow distribution channel, forming a complete airflow transmission and distribution system. The air inlet channel is connected to the air compression equipment to ensure a stable air source input. The air distribution channel adopts a ring structure, which can evenly distribute compressed air to six groups of guide modules arranged in a ring array. This avoids the local suction fluctuations caused by uneven pressure in traditional single channels, and ensures that the airflow pressure and flow rate output by each flow distribution channel are consistent, providing a stable air source foundation for subsequent precise control.

[0017] 4. The angle of the guide channel inside the guide ball seat can be changed as the guide ball seat rotates, realizing precise control of the angle between the airflow and the channel when compressed air is blown into the yarn suction channel. The adjustable angle can also dynamically compensate for fluctuations in production. When the yarn traction speed increases, increasing the angle can enhance the "pulling force" of the airflow on the yarn and counteract the deviation caused by inertia. When the yarn has excessive local tension, decreasing the angle can allow the airflow to "gently push away" the stress concentration area, reduce yarn breakage caused by excessive local force, and significantly reduce the production scrap rate.

[0018] 5. The circular array of six guide modules, combined with the adjustable angle of the guide ball seat, can create a uniform airflow around the filament bundle within the suction channel from multiple directions, effectively avoiding the turbulence problems that are prone to occur with traditional fixed airflow paths. Eliminating turbulence not only reduces the irregular impact of airflow on the filament bundle but also ensures the stability of the negative pressure at the bottom of the suction channel, making the filament bundle experience uniform force throughout the traction process, further reducing the probability of defects such as broken filaments and fuzzy fibers. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0020] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0021] In the attached diagram: Figure 1 A schematic diagram of the structure of the present invention is shown.

[0022] Figure 2 A schematic diagram of the internal structure of the present invention is shown.

[0023] Figure 3 The present invention is shown. Figure 2 Enlarged structural diagram of part A in the middle.

[0024] Figure 4 The present invention is shown. Figure 2 Enlarged structural diagram of part B in the middle.

[0025] Figure 5 A schematic diagram of the internal structure of the wire suction holder of the present invention is shown.

[0026] Figure 6 A schematic diagram of the disassembled adjustment mechanism of the present invention is shown.

[0027] Figure 7 A schematic diagram showing the result after disassembly of the flow guiding mechanism of the present invention is shown.

[0028] Figure 8 This invention has been modified. Figure 2 A schematic diagram of the internal structure of the central guide ball seat after it has been used at an angle.

[0029] Figure 9 The present invention is shown. Figure 8 Enlarged structural diagram of part C in the middle.

[0030] Figure 10 The present invention is shown. Figure 8 Enlarged structural diagram of part D in the middle.

[0031] List of reference numerals 1. Wire suction seat; 101. Wire suction channel; 102. Airflow channel; 1021. Air inlet channel; 1022. Gas distribution channel; 1023. Flow divider channel; 2. Adjustment mechanism; 201. Adjustment knob; 202. Positioning block; 2021. Threaded block; 203. Control column; 2031. Control protrusion; 3. Flow guiding mechanism; 301. Flow guiding ball seat; 3011. Guide channel; 3012. Flow guiding gear; 302. Linkage rod; 3021. Linkage groove; 3022. Positioning gear.

[0032] It should be noted that, Figure 2 The solid black arrows indicate the airflow direction, while the hollow black arrows indicate the direction of the carbon fiber bundle's suction and traction. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please refer to Figures 1 to 10 Example 1: The present invention proposes a pneumatic fiber suction device for carbon fiber bundles, comprising: a fiber suction base 1 and a control component; the carbon fiber bundle extends from the top of the fiber suction base 1 into the interior of the fiber suction base 1, and the control component includes an adjustment mechanism 2 and a flow guiding mechanism 3. The adjustment mechanism 2 includes an adjustment knob 201, a positioning block 202, and a control column 203. The adjustment knob 201 is rotatably connected to the top of the suction seat 1, and the positioning block 202 is inserted into the top of the suction seat 1. The control column 203 is fixedly installed at the bottom of the positioning block 202 and is inserted into the interior of the suction seat 1. The flow guiding mechanism 3 includes a flow guiding ball seat 301 and a linkage rod 302. The flow guiding ball seat 301 is rotatably connected to the interior of the suction seat 1, and the linkage rod 302 is rotatably connected to the interior of the suction seat 1.

[0035] The suction seat 1 has a suction channel 101 inside, and the top of the suction channel 101 is trumpet-shaped. An airflow channel 102 is also provided on the outside of the suction seat 1, and the airflow channel 102 and the suction channel 101 are connected by a guide mechanism 3. The airflow channel 102 consists of an inlet channel 1021, a distribution channel 1022, and a diversion channel 1023. The inlet channel 1021 is fixedly installed on the side of the suction seat 1 and is connected to an air compressor via a pipe. The distribution channel 1022 is an annular channel, and the bottom end of the diversion channel 1023 is connected to the distribution channel 1022. The guide mechanism 3 is located on the side of the top of the diversion channel 1023. In use, the suction seat 1, in conjunction with the control components, can achieve the desired carbon fiber filament production. In the fiber filament processing, operations such as fiber suction and traction are performed. The carbon fiber filament can extend into the fiber suction channel 101 through the top of the fiber suction seat 1. The top of the fiber suction channel 101 is trumpet-shaped, which facilitates the insertion of the carbon fiber filament. The air compression device can pump compressed air into the air distribution channel 1022 through the air inlet channel 1021. Thus, the air distribution channel 1022 can distribute the compressed air to all guide modules for fiber suction and traction operations. After the compressed air enters the distribution channel 1023, it can be blown into the fiber suction channel 101 through the guide channel 3011 to form a jet. A negative pressure is formed at the bottom of the fiber suction channel 101, and the carbon fiber filament inside the suction device moves, thereby realizing the function of fiber suction and traction of the carbon fiber filament. It is convenient and flexible to use.

[0036] The diversion channel 1023, control column 203, and guide mechanism 3 together form a guide module. Six guide modules are arranged in a circular array inside the suction seat 1. The guide ball seat 301 has a guide channel 3011 inside, and the two ends of the guide channel 3011 connect the diversion channel 1023 and the suction channel 101. During use, the operating angle of the guide ball seat 301 can be adjusted by the adjustment mechanism 2. When the operating angle of the guide ball seat 301 changes, the operating angle of the guide channel 3011 also changes. This change in the angle of the guide channel 3011 alters the angle between the airflow and the suction channel 101 when compressed air is blown into it, thus enabling the appropriate... While being used in the production and manufacturing of carbon fiber tows of different specifications, it can also avoid the occurrence of turbulence. When drawing and pulling narrow carbon fiber tows, the angle between the airflow and the suction channel 101 can be reduced. This can prevent the airflow from being dispersed and causing insufficient suction, thus ensuring stable drawing and pulling. When drawing and pulling wide carbon fiber tows, the angle between the airflow and the suction channel 101 can be increased. This can use the airflow to push away the sticky single filaments and improve the filament separation effect. At the same time, when the filament is pulled too fast, the angle can be increased to make the airflow "hold" the filament and prevent it from shifting due to inertia. When the tension is abnormal (such as local overtightness), the angle can be decreased to make the airflow "gently push away" the stress concentration area and reduce the risk of filament breakage. It can be adjusted and used as needed, with extremely high flexibility and adaptability.

[0037] The positioning block 202 has a threaded block 2021 on its side, which is screwed into the inside of the adjusting seat 201. During use, the angle of the guide ball seat 301 can be adjusted by rotating the adjusting seat 201, making adjustment convenient and quick. When the adjusting seat 201 is rotated, it drives the positioning block 202 to move up and down on the top of the wire suction seat 1 via the threaded block 2021. As the positioning block 202 moves, it drives the control column 203 to move synchronously. The bottom of the control column 203 has a control protrusion 2031, and the outside of the linkage rod 302 has a linkage groove 3021. The control protrusion 2031 is inserted into the linkage groove 3021. When the control column 203 moves, the control protrusion 2031 can drive the linkage rod 302 to rotate through the linkage groove 3021. The bottom of the guide ball seat 301 is provided with a guide gear 3012, and the bottom of the linkage rod 302 is provided with a positioning gear 3022. The gear teeth of the guide gear 3012 and the positioning gear 3022 mesh and drive each other. When the linkage rod 302 rotates, the positioning gear 3022 can drive the guide ball seat 301 to rotate through the guide gear 3012, thereby changing the use angle of the guide channel 3011 inside the guide ball seat 301, which is convenient and flexible for adjustment.

[0038] The adjustment knob 201 has anti-slip texture on its exterior, which enhances the friction between the adjustment knob 201 and the hand, making it convenient for manual adjustment.

[0039] The specific usage and function of this embodiment: In this invention, the usage angle of the guide ball seat 301 is adjusted according to actual usage needs. The usage angle of the guide ball seat 301 can be adjusted by the adjustment mechanism 2. When the usage angle of the guide ball seat 301 changes, the usage angle of the guide channel 3011 also changes. The change in the angle of the guide channel 3011 changes the angle between the airflow and the suction channel 101 when compressed air is blown into the suction channel 101. This allows it to be used in the production and manufacturing of carbon fiber tows of different specifications while avoiding turbulence. When suctioning and pulling thin carbon fiber tows, the angle between the airflow and the suction channel 101 can be reduced. This avoids insufficient suction due to airflow dispersion, ensuring stable fiber filament traction. For wide-width carbon fiber bundles, the angle between the airflow and the suction channel 101 can be increased. This allows the airflow to push away adhered monofilaments, improving the filament separation effect. Simultaneously, when the bundle is pulled too quickly, the angle can be increased to allow the airflow to "hold" the bundle, preventing inertial deviation. When tension is abnormal (e.g., localized excessive tightness), the angle can be decreased to allow the airflow to "gently push away" stress concentration areas, reducing the risk of fiber breakage. It can be adjusted as needed. The operating angle of the guide ball seat 301 can be adjusted by rotating the adjusting knob 201. Specifically, this can be achieved by rotating the adjusting knob 201. When rotating the adjusting knob 201, the adjusting knob 201... The threaded block 2021 can drive the positioning block 202 to move up and down on the top of the fiber suction seat 1. When the positioning block 202 moves, it can drive the control column 203 to move synchronously. When the control column 203 moves, the control protrusion 2031 can drive the linkage rod 302 to rotate through the linkage groove 3021. When the linkage rod 302 rotates, the positioning gear 3022 can drive the guide ball seat 301 to rotate through the guide gear 3012, thereby changing the operating angle of the guide channel 3011 inside the guide ball seat 301. After the adjustment is completed, the fiber suction and traction operation of the carbon fiber bundle can begin. The cooperation between the fiber suction seat 1 and the control component can realize the fiber suction and traction operations in the carbon fiber bundle processing process. The carbon fiber bundle can extend into the suction channel 101 through the top of the suction seat 1. The top of the suction channel 101 is trumpet-shaped, which facilitates the insertion of the carbon fiber bundle. The air compression device can pump compressed air into the air distribution channel 1022 through the air inlet channel 1021. Thus, the air distribution channel 1022 can distribute the compressed air to all guide modules for suction and traction operations. After the compressed air enters the distribution channel 1023, it can be blown into the suction channel 101 through the guide channel 3011 to form a jet. A negative pressure is formed at the bottom of the suction channel 101, and the carbon fiber bundle inside the suction device moves, thereby realizing the function of suction and traction of the carbon fiber bundle.

[0040] In another embodiment, the adjusting seat 201 can be driven by a motor, and the control circuit of the motor can be connected to the control system. Its specific structure and working principle are existing mature technologies and will not be described in detail here. When processing carbon fiber bundles of different specifications, the motor can drive the adjusting seat 201 to rotate and automatically adjust the guide ball seat 301 to a suitable angle for use. The degree of automation is high, and it can also automatically switch in the working state to adapt to the suction and traction requirements of different carbon fiber bundles, simplifying the operation process and improving work efficiency.

Claims

1. A pneumatic fiber suction device for carbon fiber tow, characterized in that, include: A fiber suction holder (1) and a control assembly; the carbon fiber bundle extends from the top of the fiber suction holder (1) into the interior of the fiber suction holder (1), and the control assembly includes an adjustment mechanism (2) and a flow guiding mechanism (3). The adjustment mechanism (2) includes an adjustment knob (201), a positioning block (202), and a control column (203). The adjustment knob (201) is rotatably connected to the top of the suction seat (1), and the positioning block (202) is inserted into the top of the suction seat (1). The control column (203) is fixedly installed at the bottom of the positioning block (202) and is inserted into the inside of the suction seat (1). The flow guiding mechanism (3) includes a flow guiding ball seat (301) and a linkage rod (302). The flow guiding ball seat (301) is rotatably connected to the inside of the suction seat (1), and the linkage rod (302) is rotatably connected to the inside of the suction seat (1).

2. The pneumatic fiber suction device for carbon fiber tow according to claim 1, characterized in that, The suction seat (1) has a suction channel (101) inside, and the top of the suction channel (101) is trumpet-shaped. The suction seat (1) also has an airflow channel (102) on the outside, and the airflow channel (102) and the suction channel (101) are connected by a flow guide mechanism (3).

3. The pneumatic fiber suction device for carbon fiber tow according to claim 2, characterized in that, The airflow channel (102) consists of an air inlet channel (1021), an air distribution channel (1022), and a flow divider channel (1023). The air inlet channel (1021) is fixedly installed on the side of the wire suction seat (1) and is connected to the air compression equipment through a pipe. The air distribution channel (1022) is an annular channel, and the bottom end of the flow divider channel (1023) is connected to the air distribution channel (1022). The flow guide mechanism (3) is set on the side of the top of the flow divider channel (1023).

4. The pneumatic fiber suction device for carbon fiber tow according to claim 3, characterized in that, The diversion channel (1023), control column (203) and guide mechanism (3) together form a guide module. The guide module has six groups, which are arranged in a ring array inside the wire suction seat (1).

5. The pneumatic fiber suction device for carbon fiber tow according to claim 4, characterized in that, The guide ball seat (301) has a guide channel (3011) inside, and the two ends of the guide channel (3011) connect the diversion channel (1023) and the suction channel (101).

6. The pneumatic fiber suction device for carbon fiber tow according to claim 5, characterized in that, The positioning block (202) has a threaded block (2021) on its side, and the threaded block (2021) is screwed into the interior of the adjusting seat (201) by threads.

7. The pneumatic fiber suction device for carbon fiber tow according to claim 6, characterized in that, The bottom of the control column (203) is provided with a control protrusion (2031), and the outside of the linkage rod (302) is provided with a linkage groove (3021), and the control protrusion (2031) is inserted into the inside of the linkage groove (3021).

8. The pneumatic fiber suction device for carbon fiber tow according to claim 7, characterized in that, The bottom of the guide ball seat (301) is provided with a guide gear (3012), and the bottom of the linkage rod (302) is provided with a positioning gear (3022). The guide gear (3012) and the positioning gear (3022) mesh and drive each other.

9. The pneumatic fiber suction device for carbon fiber tow according to claim 8, characterized in that, The adjustment knob (201) has anti-slip texture on its exterior.

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