Silicon carbide fiber yarn spreading device

Abstract

The utility model relates to the technical field of carbon fiber production, in particular to a silicon carbide fiber yarn spreading device which comprises an airflow pre-spreading mechanism, an ultrasonic yarn spreading mechanism and a hot-pressing shaping mechanism. The air flow pre-expansion mechanism comprises an air guide barrel arranged in the axis direction of the silicon carbide fibers, the two ends of the air guide barrel are through, the silicon carbide fibers penetrate through the air guide barrel, and a plurality of air outlets facing the silicon carbide fibers are formed in the inner side wall of the air guide barrel and used for generating transverse air flow; the ultrasonic yarn spreading mechanism comprises a liquid collecting tank and a plurality of ultrasonic transducers, the interior of the liquid collecting tank is hollow, yarn spreading liquid is contained in the liquid collecting tank, and the ultrasonic transducers are evenly distributed at the tank bottom of the liquid collecting tank; the hot-pressing shaping mechanism comprises a hot-pressing frame, a hot-pressing roller and a shaping roller, the hot-pressing roller and the shaping roller are rotatably arranged on the hot-pressing frame and are parallel to each other, and the silicon carbide fibers after yarn spreading are located between the hot-pressing roller and the shaping roller. The performance of silicon carbide fiber yarn spreading products is achieved, the continuity of the yarn spreading process is guaranteed, and the yarn spreading efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber production technology, and in particular to a silicon carbide fiber spreading device. Background Technology

[0002] Silicon carbide fiber is a high-performance ceramic material with carbon and silicon as its main components. It has advantages such as high temperature oxidation resistance, high hardness, high strength, high thermal stability, corrosion resistance and low density. It is mainly used as a high temperature resistant material and reinforcing material, such as heat shielding materials, high temperature resistant conveyor belts, and filter cloths for filtering high temperature gases or molten metals.

[0003] During the production process, the raw yarn needs to be spread out to achieve the preset area and weight requirements. In related technologies, spreading rollers are usually used for mechanical spreading. However, due to the high strength and hardness of silicon carbide fibers, friction and contact during mechanical spreading can easily cause the silicon carbide fibers to break. In addition, the number of individual filaments in each silicon carbide raw yarn is relatively small, which makes it difficult for the fiber bundle to spread out evenly during the spreading process to form a wide fabric structure. This affects the mechanical properties and structural integrity of the final product and makes it difficult to ensure the continuity of production.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background technology of this utility model, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a silicon carbide fiber spreading device to realize the performance of silicon carbide fiber spreading products, ensure the continuity of the spreading process, and improve spreading efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a silicon carbide fiber spreading device, comprising: an airflow pre-spreading mechanism, an ultrasonic spreading mechanism, and a hot pressing and shaping mechanism arranged sequentially along the silicon carbide fiber conveying direction;

[0007] The airflow pre-expansion mechanism includes an air guide duct arranged along the axis of the silicon carbide fiber. The air guide duct is through-hole at both ends for the silicon carbide fiber to pass through. The inner side wall of the air guide duct is provided with a plurality of air outlets facing the silicon carbide fiber. The plurality of air outlets are used to generate transverse airflow.

[0008] The ultrasonic yarn spreading mechanism includes a liquid collection tank and several ultrasonic transducers. The liquid collection tank is hollow inside and holds the yarn spreading liquid. The several ultrasonic transducers are evenly distributed at the bottom of the liquid collection tank.

[0009] The hot pressing and shaping mechanism includes a hot pressing frame and a hot pressing roller and a shaping roller rotatably mounted on the hot pressing frame. The hot pressing roller and the shaping roller are arranged parallel to each other, and the silicon carbide fiber after being unrolled is located between the hot pressing roller and the shaping roller.

[0010] Furthermore, the airflow pre-expansion mechanism also includes two bases, which are fixedly installed on the ground along the axial direction of the air guide tube. The top surface of the base has a receiving groove that fits against the outer wall of the air guide tube, and the air guide tube is inserted into the receiving groove.

[0011] Furthermore, a control component is provided on the top of the air guide duct. The control component is tilted toward one side of the air guide duct and includes a control panel and a display screen built into the control panel. The control panel is provided with multiple adjustment buttons for adjusting the speed, direction and temperature parameters of the transverse airflow. The display screen is used to display the current working status of the air guide duct in real time.

[0012] Furthermore, a support assembly is provided outside the liquid collection tank. The support assembly includes a support base and a support frame. The support base is located at the bottom of the liquid collection tank, and the support frame surrounds the outside of the liquid collection tank. The bottom of the support frame is fixedly connected to the support base, and the top surface of the support frame is higher than the top surface of the liquid collection tank.

[0013] Furthermore, a pair of guide rollers are provided on the inner sidewall of the support frame, and the two guide rollers are respectively located at both ends of the support frame along the conveying direction of the silicon carbide fiber.

[0014] Furthermore, the two ends of the guide roller are fixedly connected to the inner sidewall of the support frame via brackets, and the height and tilt angle of the brackets are adjustable.

[0015] Furthermore, circulation pipes are provided on both sides of the support frame in the width direction. The axis of each circulation pipe is set along the conveying direction of silicon carbide fiber, and at least one circulation port is opened on the outer side wall of the circulation pipe. The circulation port is inclined toward the middle of the liquid collection tank.

[0016] Furthermore, the bottom of the collection tank is through-connected to form a discharge outlet. A filter screen and a plug are provided at the discharge outlet. The filter screen is located at the end of the discharge outlet facing the inside of the collection tank, and the plug is engaged in the discharge outlet.

[0017] Furthermore, a drive assembly is provided on the outside of the hot press frame. The drive assembly includes a drive component, a reduction gearbox, and a transmission component. One end of the shaping roller is connected to one end of the reduction gearbox via the transmission component, and the drive component is connected to the other end of the reduction gearbox.

[0018] Furthermore, each of the two ends of the top of the hot press frame is provided with a set of adjustment components. Each set of adjustment components includes an adjustment element, a guide block and a positioning plate. The guide block is sleeved on the end of the hot press roller. The positioning plate is fixedly set on the end face of the hot press frame and the guide block is slidably connected to the positioning plate. The adjustment element is fixedly set on the top of the hot press frame and the output end is fixedly connected to the top surface of the guide block.

[0019] The beneficial effects of this utility model are as follows: By setting up an airflow pre-spreading mechanism and an ultrasonic yarn spreading mechanism, this utility model adopts a non-contact yarn spreading method, which effectively reduces the damage of mechanical friction to silicon carbide fibers and avoids fiber breakage caused by contact. Through the vibration of the ultrasonic transducer, the fibers can be spread more evenly to form a fabric structure with a larger width. The silicon carbide fibers after yarn spreading are hot-pressed and shaped by the hot-pressing and shaping mechanism, thereby ensuring the mechanical properties and structural integrity of the final product and effectively improving the efficiency of silicon carbide fiber yarn spreading. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the silicon carbide fiber spreading device in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram illustrating the working process of the silicon carbide fiber spreading device in this embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the airflow pre-expansion mechanism in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the ultrasonic yarn spreading mechanism in an embodiment of the present invention;

[0025] Figure 5 This is a top view of the ultrasonic yarn spreading mechanism in an embodiment of this utility model;

[0026] Figure 6 for Figure 5 Sectional view at point AA;

[0027] Figure 7 This is a schematic diagram of the hot pressing and shaping mechanism in an embodiment of the present invention.

[0028] Reference numerals: 1. Silicon carbide fiber; 10. Airflow pre-expansion mechanism; 11. Air guide tube; 11a. Air outlet; 12. Base; 12a. Receiving groove; 13. Control component; 13a. Control panel; 13b. Display screen; 13c. Adjustment button; 20. Ultrasonic yarn spreading mechanism; 21. Liquid collection tank; 21a. Discharge port; 21b. Filter screen; 21c. Plug; 22. Ultrasonic transducer; 23. Support component; 23a. Support base; 23b. Support frame; 24. Guide roller; 25. Bracket; 26. Circulation pipe; 26a. Circulation port; 30. Hot pressing and shaping mechanism; 31. Hot pressing frame; 32. Hot pressing roller; 33. Shaping roller; 34. Drive component; 34a. Drive component; 34b. Gearbox; 34c. Transmission component; 35. Adjustment component; 35a. Adjustment component; 35b. Guide block; 35c. Positioning plate. Detailed Implementation

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

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] like Figures 1 to 7 The silicon carbide fiber spreading device shown includes: an airflow pre-spreading mechanism 10, an ultrasonic spreading mechanism 20, and a hot pressing and shaping mechanism 30 arranged sequentially along the conveying direction of the silicon carbide fiber 1.

[0033] The airflow pre-expansion mechanism 10 includes an air guide duct 11 arranged along the axis of the silicon carbide fiber 1. The air guide duct 11 is open at both ends for the silicon carbide fiber 1 to pass through. The inner side wall of the air guide duct 11 is provided with a plurality of air outlets 11a facing the silicon carbide fiber 1. The plurality of air outlets 11a are used to generate transverse airflow. The transverse airflow is used to pre-expand the fiber, avoiding mechanical contact and reducing damage to the silicon carbide fiber 1.

[0034] The ultrasonic yarn spreading mechanism 20 includes a liquid collection tank 21 and several ultrasonic transducers 22. The liquid collection tank 21 is hollow inside and holds the yarn spreading liquid. The several ultrasonic transducers 22 are evenly distributed at the bottom of the liquid collection tank 21. The vibration generated by the ultrasonic transducers 22 is indirectly transmitted to the silicon carbide fiber 1 through the yarn spreading liquid, thereby dispersing the fiber. The indirect vibration yarn spreading further reduces the damage to the silicon carbide fiber 1.

[0035] The hot pressing and shaping mechanism 30 includes a hot pressing frame 31 and a hot pressing roller 32 and a shaping roller 33 rotatably mounted on the hot pressing frame 31. The hot pressing roller 32 and the shaping roller 33 are arranged parallel to each other, and the unrolled silicon carbide fiber 1 is located between the hot pressing roller 32 and the shaping roller 33. Through the hot pressing action of the hot pressing roller 32 and the shaping roller 33, the unrolled silicon carbide fiber 1 can be effectively shaped to ensure the stability and consistency of its structure.

[0036] This invention employs a non-contact yarn spreading method by setting up an airflow pre-spreading mechanism 10 and an ultrasonic yarn spreading mechanism 20. This effectively reduces mechanical friction damage to silicon carbide fibers 1 and avoids fiber breakage caused by contact. Through the vibration of the ultrasonic transducer 22, the fibers can be spread more evenly to form a fabric structure with a larger width. The hot-pressing and shaping mechanism 30 hot-presses and shapes the spread silicon carbide fibers 1, thereby ensuring the mechanical properties and structural integrity of the final product and effectively improving the efficiency of spreading silicon carbide fibers 1.

[0037] Based on the above embodiments, the airflow pre-expansion mechanism 10 also includes two bases 12. The two bases 12 are fixedly set on the ground along the axial direction of the air guide tube 11, and the top surface of the base 12 has a receiving groove 12a that fits against the outer wall of the air guide tube 11. The air guide tube 11 is locked in the receiving groove 12a. The bases 12 form a fixed support for the air guide tube 11, which can ensure the stability of the airflow pre-expansion mechanism 10 during operation, reduce displacement caused by equipment vibration or external impact, and thus ensure the continuity and uniformity of the yarn unfolding process.

[0038] Based on the above embodiments, a control component 13 is provided on the top of the air guide duct 11. The control component 13 is tilted towards one side of the air guide duct 11, making the operator more comfortable and reducing fatigue during operation. It includes a control panel 13a and a display screen 13b built into the control panel 13a. The control panel 13a is provided with multiple adjustment buttons 13c for adjusting the speed, direction and temperature parameters of the transverse airflow. The display screen 13b is used to display the current working status of the air guide duct 11 in real time. This allows the operator to easily adjust the airflow parameters and monitor the working status, improving the convenience and efficiency of operation, and also helping to identify and solve problems in a timely manner.

[0039] Based on the above embodiments, a support assembly 23 is provided outside the liquid collection tank 21. The support assembly 23 includes a support base 23a and a support frame 23b. The support base 23a is located at the bottom of the liquid collection tank 21, and the support frame 23b surrounds the outside of the liquid collection tank 21. The bottom of the support frame 23b is fixedly connected to the support base 23a, and the top surface of the support frame 23b is higher than the top surface of the liquid collection tank 21. This enhances the structural stability of the overall ultrasonic yarn spreading mechanism 20, prevents shaking during operation, and improves yarn spreading accuracy. Furthermore, the support frame 23b can serve as a protective structure to prevent operators from directly contacting the edge of the liquid collection tank 21, reducing safety risks.

[0040] Based on the above embodiment, a pair of guide rollers 24 are provided on the inner wall of the support frame 23b. The two guide rollers 24 are respectively placed at both ends of the support frame 23b along the conveying direction of silicon carbide fiber 1. The guide rollers 24 can effectively guide the silicon carbide fiber 1 into or out of the liquid collection tank 21 along the predetermined conveying direction, ensuring the smoothness of the fiber spreading process and reducing the friction and damage of the fiber during the spreading process. Moreover, setting the guide rollers 24 on the inner wall of the support frame 23b can make full use of space, making the entire spreading device compact and reducing the overall size of the equipment.

[0041] Based on the above embodiments, the two ends of the guide roller 24 are fixedly connected to the inner wall of the support frame 23b through the bracket 25, and the height and tilt angle of the bracket 25 can be adjusted. The fixed connection between the bracket 25 and the inner wall of the support frame 23b ensures the stability of the guide roller 24 during the yarn spreading process and reduces the displacement of the guide roller 24 caused by equipment vibration. In addition, the adjustable bracket 25 enables the guide roller 24 to adapt to silicon carbide fibers 1 of different widths and properties, thereby improving the versatility and flexibility of the yarn spreading device.

[0042] Based on the above embodiment, circulation pipes 26 are provided on both sides of the support frame 23b in the width direction. The axis of each circulation pipe 26 is arranged along the conveying direction of silicon carbide fiber 1, and at least one circulation port 26a is opened on the outer side wall of the circulation pipe 26. The circulation port 26a is inclined towards the middle of the liquid collection tank 21. This realizes the automatic filling of the yarn spreading liquid in the liquid collection tank 21 and avoids the yarn spreading liquid directly impacting the silicon carbide fiber 1.

[0043] Based on the above embodiment, the bottom of the liquid collection tank 21 is through-connected to form a discharge port 21a. A filter screen 21b and a plug 21c are provided at the discharge port 21a. The filter screen 21b is located at the end of the discharge port 21a facing the inside of the liquid collection tank 21, and the plug 21c is locked in the discharge port 21a. The discharge port 21a allows the liquid in the liquid collection tank 21 to be discharged easily, facilitating the cleaning of the liquid collection tank 21 and the replacement of the yarn spreading liquid. The filter screen 21b can trap silicon carbide fibers 1, preventing the silicon carbide fibers 1 generated by ultrasonic vibration yarn spreading from mixing into the yarn spreading liquid. The plug 21c can quickly seal the discharge port 21a, ensuring the sealing of the discharge port 21a during ultrasonic yarn spreading and preventing the yarn spreading liquid from leaking.

[0044] Based on the above embodiments, a drive assembly 34 is also provided on the outside of the hot press frame 31. The drive assembly 34 includes a drive component 34a, a reduction gearbox 34b, and a transmission component 34c. One end of the shaping roller 33 is connected to one end of the reduction gearbox 34b via the transmission component 34c, and the other end of the drive component 34a is connected to the reduction gearbox 34b. The transmission component 34c connects the shaping roller 33 and the reduction gearbox 34b to ensure stable power transmission. The drive component 34a serves as the power source for the entire drive assembly 34 and can be a motor or other power equipment to provide the necessary power to the hot press frame 31. The reduction gearbox 34b is used to reduce the high-speed rotation of the drive component 34a to adapt to the lower speed required by the shaping roller 33 and ensure the smooth operation of the hot pressing and shaping process.

[0045] Based on the above embodiments, a set of adjustment components 35 are provided at both ends of the top of the hot press frame 31. Each set of adjustment components 35 includes an adjustment element 35a, a guide block 35b, and a positioning plate 35c. The guide block 35b is sleeved on the end of the hot press roller 32, and the positioning plate 35c is fixedly set on the end face of the hot press frame 31. The guide block 35b and the positioning plate 35c are slidably connected. The adjustment element 35a is fixedly set on the top of the hot press frame 31, and its output end is fixedly connected to the top surface of the guide block 35b. The slidable connection between the guide block 35b and the positioning plate 35c allows the hot press roller 32 to move precisely when adjusting the pressure, thereby precisely adjusting the pressure of the hot press roller 32 on the silicon carbide fiber 1 and ensuring the hot pressing and shaping effect.

[0046] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A silicon carbide fiber spreading device, characterized in that, include: An airflow pre-spreading mechanism, an ultrasonic yarn spreading mechanism, and a hot pressing and shaping mechanism are arranged sequentially along the silicon carbide fiber conveying direction; The airflow pre-expansion mechanism includes an air guide duct arranged along the axis of the silicon carbide fiber. The air guide duct is through-hole at both ends for the silicon carbide fiber to pass through. The inner side wall of the air guide duct is provided with a plurality of air outlets facing the silicon carbide fiber. The plurality of air outlets are used to generate transverse airflow. The ultrasonic yarn spreading mechanism includes a liquid collection tank and several ultrasonic transducers. The liquid collection tank is hollow inside and holds the yarn spreading liquid. The several ultrasonic transducers are evenly distributed at the bottom of the liquid collection tank. The hot pressing and shaping mechanism includes a hot pressing frame and a hot pressing roller and a shaping roller rotatably mounted on the hot pressing frame. The hot pressing roller and the shaping roller are arranged parallel to each other, and the silicon carbide fiber after being unrolled is located between the hot pressing roller and the shaping roller.

2. The silicon carbide fiber spreading device according to claim 1, characterized in that, The airflow pre-expansion mechanism also includes two bases, which are fixedly installed on the ground along the axial direction of the air guide tube. The top surface of the base has a receiving groove that fits against the outer wall of the air guide tube, and the air guide tube is inserted into the receiving groove.

3. The silicon carbide fiber spreading device according to claim 2, characterized in that, A control component is provided on the top of the air guide duct. The control component is tilted toward one side of the air guide duct and includes a control panel and a display screen built into the control panel. The control panel is provided with multiple adjustment buttons for adjusting the speed, direction and temperature parameters of the horizontal airflow. The display screen is used to display the current working status of the air guide duct in real time.

4. The silicon carbide fiber spreading device according to claim 1, characterized in that, A support assembly is provided on the outside of the liquid collection tank. The support assembly includes a support base and a support frame. The support base is located at the bottom of the liquid collection tank, and the support frame surrounds the outside of the liquid collection tank. The bottom of the support frame is fixedly connected to the support base, and the top surface of the support frame is higher than the top surface of the liquid collection tank.

5. The silicon carbide fiber spreading device according to claim 4, characterized in that, A pair of guide rollers are provided on the inner sidewall of the support frame, and the two guide rollers are respectively located at both ends of the support frame along the conveying direction of the silicon carbide fiber.

6. The silicon carbide fiber spreading device according to claim 5, characterized in that, The two ends of the guide roller are fixedly connected to the inner sidewall of the support frame through brackets, and the height and tilt angle of the brackets can be adjusted.

7. The silicon carbide fiber spreading device according to claim 4, characterized in that, Both sides of the support frame in the width direction are provided with circulation pipes. The axis of each circulation pipe is set along the conveying direction of silicon carbide fiber, and at least one circulation port is opened on the outer side wall of the circulation pipe. The circulation port is inclined towards the middle of the liquid collection tank.

8. The silicon carbide fiber spreading device according to claim 7, characterized in that, The bottom of the liquid collection tank is through-hole to form a discharge port. A filter screen and a plug are provided at the discharge port. The filter screen is located at the end of the discharge port facing the inside of the liquid collection tank, and the plug is locked in the discharge port.

9. The silicon carbide fiber spreading device according to claim 1, characterized in that, A drive assembly is also provided on the outside of the hot press frame. The drive assembly includes a drive component, a reduction gearbox, and a transmission component. One end of the shaping roller is connected to one end of the reduction gearbox via the transmission component, and the drive component is connected to the other end of the reduction gearbox.

10. The silicon carbide fiber spreading device according to claim 9, characterized in that, Each of the two ends of the top of the hot press frame is provided with a set of adjustment components. Each set of adjustment components includes an adjustment component, a guide block and a positioning plate. The guide block is sleeved on the end of the hot press roller. The positioning plate is fixedly set on the end face of the hot press frame and the guide block is slidably connected to the positioning plate. The adjustment component is fixedly set on the top of the hot press frame and the output end is fixedly connected to the top surface of the guide block.

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