Large-tow carbon fiber precursor winding device

Abstract

The utility model relates to the technical field of carbon fiber precursor production devices, in particular to a large-tow carbon fiber precursor winding device which comprises a precursor yarn guide wheel assembly and a compression roller constant thrust control assembly, as the winding radius of a spindle is continuously increased, the spindle pushes a compression roller yarn guide head support leftwards, at the moment, a distance measuring sensor measures the leftward moving distance L of the support, and the distance measuring sensor measures the leftward moving distance L; and the control system controls a wall plate on the protofilament tension control part to synchronously move leftwards for L, so that the compression roller yarn guide head bracket and the protofilament tension control part are relatively static, and the included angle between the protofilament and the yarn guide head is kept constant, such as 59 degrees, thereby ensuring that the pressure of the protofilament on the yarn guide head is constant; therefore, the precursor cannot be twisted in the winding process, yarns are orderly wound, and the production quality and the production efficiency of the carbon fiber precursor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber precursor production devices, in particular to a large-tow carbon fiber precursor winding device. Background Art

[0002] In the production process of composite materials, yarns need to be processed and reproduced. When processing and producing carbon fiber, glass fiber and other yarns, the wound raw materials need to be unwound, guided, spread, collected and then processed.

[0003] The precursor winding device consists of a precursor winding shaft and a winding paper drum, a yarn tension control component, a pressure roller and other components. The twisting of small-tow carbon fiber precursor (such as 6K, 12K) has little effect on its subsequent carbonization process, while the twisting of 50K large-tow carbon fiber precursor has a great influence on its subsequent carbonization process. Therefore, the twisting of 50K large-tow carbon fiber precursor is not allowed, and the large-tow carbon fiber precursor is twist-free through the yarn guide head.

[0004] As the winding radius of the spindle continues to increase, the angle between the precursor and the yarn guide head changes, causing the pressure of the precursor on the yarn guide head to change, resulting in twisting and causing yarn chaos, which in turn affects the normal production of carbon fiber precursor and reduces the production efficiency of carbon fiber precursor.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0006] The utility model provides a large-tow carbon fiber precursor winding device, thereby effectively solving the problems in the background technology.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a large-tow carbon fiber precursor winding device, comprising:

[0008] A raw yarn guide wheel assembly, comprising a positioning wheel, a tension control component, a guide wheel, a wall panel, a first guide rail and a control system, wherein the positioning wheel, the tension control component and the guide wheel are arranged on the wall panel, the raw yarn is output to the winding component after passing through the positioning wheel, the tension control component and the guide wheel to be wound into a spindle, the wall panel is arranged on the first guide rail, the first guide rail is connected to the control system, and the control system is used to control the distance that the wall panel moves on the first guide rail;

[0009] The pressure roller constant thrust control component includes a pressure roller yarn guide head bracket, a distance measuring sensor and a second guide rail. The pressure roller yarn guide head bracket is arranged on the second guide rail and moves along the second guide rail. The distance measuring sensor is used to measure the distance moved by the pressure roller yarn guide head bracket and transmit it to the control system to control the synchronous movement of the wall panel so that the angle between the raw yarn and the yarn guide head remains constant.

[0010] Furthermore, the raw yarn guide wheel assembly also includes a motor and a screw rod, and the screw rod is parallel to the first guide rail and is arranged in the wall panel.

[0011] Furthermore, the tension control component includes a tension wheel, a tension rod, a counterweight, a first rotating shaft and a first cylinder, the first rotating shaft passes through the wall panel, one end of the first rotating shaft is connected to the tension rod, and the other end is provided with a first cylinder, one end of the tension rod is connected to the tension wheel, and the other end is connected to the counterweight.

[0012] Furthermore, a tension arm is provided on one side of the first rotating shaft close to the first cylinder, and an angle is formed between the tension arm and the tension rod. A second rotating shaft is provided on the other end of the tension arm, a positioning rotating shaft is provided at one end of the first cylinder, and an output end of the first cylinder is connected to the second rotating shaft.

[0013] Furthermore, a contactless magnetic encoder is provided at the tail of the first rotating shaft for measuring the rotation angle of the tension wheel or the tension rod.

[0014] Furthermore, a tension wheel proportional regulating valve is also provided on the first cylinder for accurately regulating the air pressure of the first cylinder.

[0015] Furthermore, the tension control component also includes a limit rod, and the limit rod is arranged on a side of the wall panel close to the tension rod.

[0016] Furthermore, the pressure roller constant thrust control assembly also includes a second cylinder, which is arranged on a side of the pressure roller yarn guide head bracket away from the spindle and is arranged parallel to the second guide rail.

[0017] Furthermore, a pressure roller proportional pressure regulating valve is provided on the second cylinder for adjusting the air pressure of the second cylinder.

[0018] Furthermore, the side of the pressure roller yarn guide head bracket close to the spindle includes a yarn guide head and a pressure roller arranged up and down.

[0019] The beneficial effects of the utility model are as follows: the utility model sets a precursor yarn guide wheel assembly and a pressure roller constant thrust control assembly. As the winding radius of the spindle increases continuously, the spindle pushes the pressure roller guide head bracket to the left. At this time, the distance measuring sensor measures the left movement distance L of the bracket and transmits it to the control system. The control system controls the wall panel on the precursor tension control component to move left synchronously by L. It can be seen that the pressure roller guide head bracket and the precursor tension control component are relatively stationary, so that the angle between the precursor and the guide head remains constant, such as 59°, thereby ensuring that the pressure of the precursor on the guide head is constant, so that the precursor will not be twisted during the winding process, so that the yarn is carried out in an orderly manner, thereby improving the production quality and production efficiency of the carbon fiber precursor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a large-tow carbon fiber precursor winding device;

[0022] Figure 2 It is a schematic diagram of the structure of the large-tow carbon fiber precursor winding device (the spindle radius increases and the pressure roller yarn guide head bracket is pushed to the left);

[0023] Figure 3 It is a structural schematic diagram of the raw yarn guide wheel assembly;

[0024] Figure 4 It is a structural schematic diagram of the constant thrust control assembly of the pressure roller;

[0025] Figure 5 is a side view of a tension control component;

[0026] Figure 6 The figure shows the rear view of the tension control component.

[0027] Figure numerals: 1, raw yarn guide wheel assembly; 11, positioning wheel; 12, tension control component; 121, tension wheel; 122, tension rod; 122a, limit rod; 123, counterweight; 124, first rotating shaft; 125, first cylinder; 125a, tension wheel proportional regulating valve; 126, tension arm; 127, second rotating shaft; 128, positioning rotating shaft; 129, magnetic encoder; 13, guide wheel; 14, wall panel; 15, first guide rail; 16, motor; 17, screw rod; 2, pressure roller constant thrust control assembly; 21, pressure roller guide head bracket; 22, distance sensor; 23, second guide rail; 24, guide head; 25, pressure roller; 26, second cylinder; 261, pressure roller proportional pressure regulating valve;

[0028] 01. Raw silk; 02. Winding component; 03. Spindle. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figures 1 to 6 As shown: A large-tow carbon fiber precursor winding device, comprising:

[0033] The raw yarn guide wheel assembly 1 comprises a positioning wheel 11, a tension control component 12, a guide wheel 13, a wall panel 14, a first guide rail 15 and a control system. The positioning wheel 11, the tension control component 12 and the guide wheel 13 are arranged on the wall panel 14. The raw yarn 01 is output to the winding component 02 after passing through the positioning wheel 11, the tension control component 12 and the guide wheel 13 and is wound into a spindle 03. The wall panel 14 is arranged on the first guide rail 15. The first guide rail 15 is connected to the control system. The control system is used to control the distance that the wall panel 14 moves on the first guide rail 15.

[0034] The pressure roller constant thrust control assembly 2 comprises a pressure roller yarn guide head bracket 21, a distance sensor 22 and a second guide rail 23. The pressure roller yarn guide head bracket 21 is arranged on the second guide rail 23 and moves along the second guide rail 23. The distance sensor 22 is used to measure the moving distance of the pressure roller yarn guide head bracket 21 and transmit it to the control system to control the synchronous movement of the wall panel 14, so that the angle between the original yarn 01 and the yarn guide head 24 remains constant.

[0035] like Figure 1 , 2 As shown, by setting the raw yarn guide wheel assembly 1 and the pressure roller constant thrust control assembly 2, as the winding radius of the spindle 03 continues to increase, the spindle 03 pushes the pressure roller guide head bracket 21 to the left. At this time, the distance sensor 22 measures the left movement distance L of the bracket and transmits it to the control system. The control system controls the wall panel 14 on the raw yarn 01 tension control component 12 to move L to the left synchronously. It can be seen that the pressure roller guide head bracket 21 and the raw yarn 01 tension control component 12 are relatively stationary, so that the angle between the raw yarn 01 and the guide head 24 remains constant, such as 59°, thereby ensuring that the pressure of the raw yarn 01 on the guide head 24 is constant, so that the raw yarn 01 will not twist during the winding process, so that the yarn is carried out in an orderly manner, thereby improving the production quality and production efficiency of the carbon fiber raw yarn 01.

[0036] The device realizes precise movement of the wall panel 14 through the control system so that the angle between the raw yarn 01 and the yarn guide head 24 remains constant, which helps to ensure that during the winding process of the spindle 03, the pressure of the raw yarn 01 on the yarn guide head 24 is always maintained at a constant level to prevent the occurrence of problems such as twisting. Since the angle remains constant, it helps to maintain a stable pressure of the raw yarn 01 on the yarn guide head 24, so that the yarn can proceed in an orderly manner during the winding process, which helps to improve the production quality of the carbon fiber raw yarn 01.

[0037] The control system can automatically adjust the position of the wall panel 14 according to the feedback of the distance sensor 22, so that it moves synchronously with the pressure roller guide head bracket 21. The automatic adjustment ensures the consistency under different winding radii, and improves the applicability and production efficiency of the device.

[0038] As a preferred embodiment of the above-mentioned embodiment, the raw yarn guide wheel assembly 1 also includes a motor 16 and a screw rod 17. The screw rod 17 is parallel to the first guide rail 15 and is arranged in the wall panel 14. In this embodiment, the motor 16 adopts a servo motor. The servo motor is a precision control motor whose output can be precisely controlled and adjusted. The use of a servo motor can provide more accurate and reliable motion control. Under the drive of the servo motor 16, the screw rod 17 drives the wall panel 14 to move along the first guide rail 15. The combination of the servo motor 16 and the screw rod 17 can achieve precise control of the movement of the wall panel 14, which is crucial to ensure that a constant angle between the raw yarn 01 and the yarn guide head 24 is maintained during the winding process. By introducing the motor 16 and the screw rod 17, this device can achieve a higher degree of automation and precision control, thereby further improving the production quality and efficiency of the carbon fiber raw yarn 01.

[0039] Since the spindles 03 are divided into different grades, the tension control component 12 applies corresponding controllable tension to the raw yarn 01 to increase the adaptability of the device.

[0040] In this embodiment, if Figure 5 As shown, the tension control component 12 includes a tension wheel 121, a tension rod 122, a counterweight 123, a first rotating shaft 124 and a first cylinder 125. The first rotating shaft 124 passes through the wall panel 14. One end of the first rotating shaft 124 is connected to the tension rod 122, and the other end is provided with a first cylinder 125. One end of the tension rod 122 is connected to the tension wheel 121, and the other end is connected to the counterweight 123. The function of the counterweight 123 is to provide additional mass. By hanging on one end of the tension rod 122, it can balance the gravity of the opposite tension wheel 121, so that the balance state of the tension rod 122 can be adjusted, thereby adjusting the tension of the tension wheel 121 on the carbon fiber precursor 01. By adjusting the mass of the counterweight 123, the tension level of the precursor 01 can be more accurately controlled.

[0041] On the one hand, through the tension control component 12, the device can apply controllable tension to the raw yarn 01, which is crucial for spindles 03 of different grades, because spindles 03 of different grades require different tensions to ensure the stability and consistency of the yarn; on the other hand, the tension control component 12 increases the adaptability of the device. Different grades of spindles 03 require different tension levels. Through adjustable tension control, the device can adapt to spindles 03 of different grades, ensuring that stable yarn quality can be maintained when producing raw yarns 01 of different specifications.

[0042] A tension arm 126 is provided on one side of the first rotating shaft 124 close to the first cylinder 125, and an angle is formed between the tension arm 126 and the tension rod 122. A second rotating shaft 127 is provided on the other end of the tension arm 126. A positioning rotating shaft 128 is provided on one end of the first cylinder 125, and the output end of the first cylinder 125 is connected to the second rotating shaft 127. Specifically, Figure 6 As shown, behind the wall panel 14, it can be seen that a tension arm 126 is also fixed on the first shaft 124, which forms an angle of about 30° with the tension rod 122. The tension arm 126 is connected to the telescopic rod of the first cylinder 125 through the second shaft 127. The other end cylinder seat of the first cylinder 125 is connected to the positioning shaft 128. The position of the positioning shaft 128 is fixed, but the first cylinder 125 can rotate moderately. The design of the tension arm 126 and the second shaft 127 provides more control options, so that the device can more flexibly adjust the tension of the original wire 01. The existence of the angle allows adjustable tension transmission between the tension rod 122 and the tension arm 126, which helps to more finely adjust the tension level; the positioning shaft 128 helps to maintain the relative position of the first cylinder 125, ensuring the overall stability of the system when adjusting the tension, which can reduce the instability of the device during operation and improve the reliability of production.

[0043] As a preferred embodiment of the above, continue to refer to Figure 5 , a contactless magnetic encoder 129 is provided at the tail of the first rotating shaft 124, which is used to measure the rotation angle of the tension wheel 121 or the tension rod 122. On the one hand, because the contactless magnetic encoder 129 can sense the rotation of the rotating shaft without physical contact, it provides accuracy for the rotation position of the tension wheel 121 or the tension rod 122, which helps to ensure precise tension control; on the other hand, because it is a contactless measuring device, the magnetic encoder 129 will not introduce additional friction or resistance, so it will not interfere with the tension of the original silk 01, which helps to maintain the efficient operation of the system while avoiding adverse effects on the production process; in addition, the magnetic encoder 129 provides real-time rotation angle information, so that the system can quickly and accurately adjust the position of the tension wheel 121 or the tension rod 122. This is crucial for timely response to production changes or troubleshooting.

[0044] In this embodiment, continue to refer to Figure 6 The first cylinder 125 is also provided with a tension wheel 121 proportional regulating valve for accurately adjusting the air pressure of the first cylinder 125. Different air pressures of the first cylinder 125 produce corresponding constant tension on the tension wheel 121. The so-called constant tension means that the tension has nothing to do with the length of the rod of the first cylinder 125 or the position of the tension arm 126. The first cylinder 125 is commonly known as a gas spring. The tension wheel 121 proportional pressure regulating valve is controlled by a 4-20mA current loop signal generated by the electronic control system, so that the electronic control system can control the tension of the original silk 01 in a hierarchical manner. For example, the tension of the original silk 01 will drop from 2500cN to 250cN from a small level to a large level.

[0045] The proportional regulating valve of the tension wheel 121 allows precise adjustment of the air pressure of the first cylinder 125. The current signal generated by the electronic control system can achieve fine control of the air pressure, thereby ensuring that the required constant tension level can be maintained at different production stages.

[0046] According to the program setting, during the winding process, the electronic control systems at different levels control the original silk 01 to produce corresponding constant tension, that is, the first cylinder 125 gives the tension wheel 121 a controllable constant tension f, and the corresponding tension f can be set at different levels.

[0047] Among them, continue to refer to Figure 6 The tension control component 12 also includes a limit rod 122a, which is arranged on one side of the wall panel 14 close to the tension rod 122. When the original wire 01 is not working, the tension rod 122 is limited at a fixed angle by the limit rod 122a, such as Figure 6 The limit rod 122a can prevent the tension rod 122 from moving or swinging freely in the absence of the original wire 01, thereby reducing wear and damage to the equipment, helping to extend the service life of the equipment and reducing maintenance costs.

[0048] The working process is: when the winding device is operating normally, the tension of the original silk 01 pulls up the tension wheel 121. When the rotation angle α of the tension wheel 121 or the tension rod 122 exceeds the set angle Ao, the magnetic encoder 129 sends the measured angle α to the control system to make the winding motor 16 rotate slower, and vice versa. It can be seen that the magnetic encoder 129 is used to adjust the winding speed so that the winding device can synchronously follow the production speed of the original silk 01 production equipment. Specifically, Figure 3 As shown, the user can set Ao, such as Ao=45°.

[0049] In order to make the spindle 03 wind more tightly, the pressure roller 25 needs to give a thrust to the spindle 03. As the winding radius of the spindle 03 increases, the thrust of the pressure roller 25 on the spindle 03 will decrease in different levels, but the thrust is required to be constant in the same level, specifically including the following:

[0050] As a preferred embodiment of the above, Figure 4As shown, the pressure roller constant thrust control assembly 2 also includes a second cylinder 26, which is arranged on the side of the pressure roller yarn guide head bracket 21 away from the spindle 03 and is arranged parallel to the second guide rail 23; on the one hand, the existence of the second cylinder 26 can maintain the constant thrust of the pressure roller 25 on the spindle 03 when the winding radius of the spindle 03 increases. As the radius of the spindle 03 increases, the conventional pressure roller 25 system will cause uneven thrust due to the change in radius around the spindle 03. The design of the second cylinder 26 helps to maintain a constant thrust at the same level, ensuring that the spindle 03 is wound more tightly; on the other hand, by ensuring that a constant thrust is applied at the same level, the uneven tension of the yarn during the winding process can be reduced, thereby reducing yarn damage and breakage, which helps to improve production efficiency and maintain product quality.

[0051] In this embodiment, continue to refer to Figure 4 The second cylinder 26 is provided with a pressure roller 25 proportional pressure regulating valve for adjusting the air pressure of the second cylinder 26. Different air pressures of the second cylinder 26 generate corresponding constant thrusts on the pressure roller 25. The so-called constant thrust means that the thrust has nothing to do with the length of the cylinder rod. The second cylinder 26 is commonly known as a gas spring. The pressure roller 25 proportional pressure regulating valve is controlled by a 4-20mA current loop signal generated by an electronic control system. In this way, the thrust of the pressure roller 25 is controlled by the electronic control system. For example, the thrust will drop from 12000cN to 4000cN from a small level to a large level.

[0052] According to the program settings of different levels, the electronic control system controls the pressure roller 25 to generate a corresponding constant thrust during the winding process. Different thrusts can be set at different levels. Before starting winding, the pressure roller 25 presses on the bobbin of the spindle 03.

[0053] On the one hand, the presence of the proportional pressure regulating valve of the pressure roller 25 allows precise adjustment of the air pressure of the second cylinder 26. By adjusting the air pressure, the thrust applied by the second cylinder 26 to the pressure roller 25 can be accurately controlled, which is very important for ensuring that a constant thrust can be maintained at different winding radii of the spindle 03. On the other hand, the processing of the carbon fiber precursor 01 will face different working conditions and requirements, such as different types of yarns or spindles 03 of different diameters. By adjusting the proportional pressure regulating valve of the pressure roller 25, it can adapt to different working conditions and ensure that the system can provide the required thrust under different conditions.

[0054] The introduction of the proportional pressure regulating valve of the pressure roller 25 enables the air pressure of the second cylinder 26 to be more accurately controlled, thereby bringing better production efficiency, adaptability and product quality in the large-tow carbon fiber precursor 01 winding device.

[0055] Among them, continue to refer to Figure 4The side of the pressure roller yarn guide head bracket 21 close to the spindle 03 includes a yarn guide head 24 and a pressure roller 25 arranged upper and lower. Specifically, the pressure roller 25, the yarn guide head 24, the reciprocating screw and the screw drive motor 16 are installed on the pressure roller yarn guide head bracket 21. Driven by the screw motor 16, the yarn guide head 24 is reciprocated and wound into the spindle 03 according to a certain winding ratio, and the reciprocating movement is about 750㎜.

[0056] The yarn guide head 24 helps to guide the raw yarn 01 into the spindle 03 along a specific path. The design of the yarn guide head 24 can ensure that the raw yarn 01 is accurately guided to the spindle 03, thereby helping to form an orderly and neat yarn structure; the presence of the pressure roller 25 can ensure that a moderate pressure is maintained between the raw yarn 01 and the yarn guide head 24, which helps to form a stable yarn. Appropriate pressure can prevent the yarn from breaking, shaking or other quality problems.

[0057] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A large-tow carbon fiber precursor winding device, characterized in that: include: A raw yarn guide wheel assembly, comprising a positioning wheel, a tension control component, a guide wheel, a wall panel, a first guide rail and a control system, wherein the positioning wheel, the tension control component and the guide wheel are arranged on the wall panel, the raw yarn is output to the winding component after passing through the positioning wheel, the tension control component and the guide wheel to be wound into a spindle, the wall panel is arranged on the first guide rail, the first guide rail is connected to the control system, and the control system is used to control the distance that the wall panel moves on the first guide rail; The pressure roller constant thrust control component includes a pressure roller yarn guide head bracket, a distance measuring sensor and a second guide rail. The pressure roller yarn guide head bracket is arranged on the second guide rail and moves along the second guide rail. The distance measuring sensor is used to measure the distance moved by the pressure roller yarn guide head bracket and transmit it to the control system to control the synchronous movement of the wall panel so that the angle between the raw yarn and the yarn guide head remains constant.

2. The large-tow carbon fiber precursor winding device according to claim 1, characterized in that: The raw yarn guide wheel assembly also includes a motor and a screw rod, and the screw rod is parallel to the first guide rail and is arranged in the wall panel.

3. The large-tow carbon fiber precursor winding device according to claim 1, characterized in that: The tension control component includes a tension wheel, a tension rod, a counterweight, a first rotating shaft and a first cylinder. The first rotating shaft passes through the wall panel. One end of the first rotating shaft is connected to the tension rod, and the other end is provided with a first cylinder. One end of the tension rod is connected to the tension wheel, and the other end is connected to the counterweight.

4. The large-tow carbon fiber precursor winding device according to claim 3 is characterized in that: A tension arm is also provided on one side of the first rotating shaft close to the first cylinder, and an angle is formed between the tension arm and the tension rod. A second rotating shaft is provided at the other end of the tension arm. A positioning rotating shaft is provided at one end of the first cylinder, and the output end of the first cylinder is connected to the second rotating shaft.

5. The large-tow carbon fiber precursor winding device according to claim 3, characterized in that: A contactless magnetic encoder is provided at the tail of the first rotating shaft for measuring the rotation angle of the tension wheel or the tension rod.

6. The large-tow carbon fiber precursor winding device according to claim 3, characterized in that: The first cylinder is also provided with a tension wheel proportional regulating valve for accurately regulating the air pressure of the first cylinder.

7. The large-tow carbon fiber precursor winding device according to claim 3, characterized in that: The tension control component further comprises a limit rod, and the limit rod is arranged on a side of the wall panel close to the tension rod.

8. The large-tow carbon fiber precursor winding device according to claim 1, characterized in that: The pressure roller constant thrust control assembly also includes a second cylinder, which is arranged on a side of the pressure roller yarn guide head bracket away from the spindle and is arranged parallel to the second guide rail.

9. The large-tow carbon fiber precursor winding device according to claim 8, characterized in that: The second cylinder is provided with a pressure roller proportional pressure regulating valve for adjusting the air pressure of the second cylinder.

10. The large-tow carbon fiber precursor winding device according to any one of claims 1 to 9, characterized in that: The side of the pressure roller yarn guide head bracket close to the spindle comprises a yarn guide head and a pressure roller arranged up and down.

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