Winding device and carbon fiber production system

Abstract

The invention discloses a winding device and a carbon fiber production system, and belongs to the technical field of carbon fiber manufacturing equipment. The carbon fiber production system comprises a winding device used for winding the carbon fibers which are sequentially subjected to wire drawing, pre-oxidation, carbonization and graphitization. A winding shaft and a rotating shaft are arranged in the winding device, the rotating shaft and the winding shaft are oppositely arranged in a spaced mode, a spiral sliding groove extending in the axial direction of the rotating shaft is formed in a shaft body of the rotating shaft, the rotating shaft is sleeved with a sleeve, a strip-shaped hole extending in the axial direction is formed in the sleeve, and a sliding piece is slidably connected into the spiral sliding groove. One end of the sliding piece penetrates out of the strip-shaped hole to be connected with the godet wheel assembly. When the rotating shaft rotates, the sliding piece can drive the godet wheel assembly to move in the axial direction of the winding shaft, then the carbon fibers are wound at different positions in the axial direction of the winding shaft, and the winding uniformity of the carbon fibers is improved.

Description

Technical Field

[0001] This application relates to the technical field of carbon fiber manufacturing equipment, and more particularly, to a winding device and a carbon fiber production system. Background Art

[0002] During the production process of carbon fiber, winding is a key link to ensure fiber quality and subsequent processing efficiency. After the carbon fiber precursor undergoes processes such as pre-oxidation and carbonization to form high-strength carbon fiber bundles, a winding device is required to wind them evenly and stably onto the winding shaft to form regular coils.

[0003] Traditional winding devices usually adopt a fixed-path method to wind the fibers at a single axial position along the winding shaft. If the carbon fiber is always wound at a certain fixed axial position on the winding shaft, it will cause excessive accumulation in a local area of the coil, while there will be depressions in adjacent areas due to excessive gaps between the fiber bundles. This uneven winding structure will lead to an imbalance in the interlayer pressure distribution, and it is easy to cause fiber breakage or coil deformation due to stress concentration during subsequent unwinding or transportation. Moreover, the high density in the accumulation area may compress the fiber surface, while the gap area cannot effectively utilize the shaft space, reducing the overall winding efficiency. At the edge of the coil, due to frequent overlap or misalignment of the fiber bundles, it is easy to generate fuzz, broken filaments or surface wrinkles, affecting the quality of carbon fiber products. Summary of the Invention

[0004] Based on the above deficiencies, this application provides a winding device and a carbon fiber production system to improve the problem of uneven carbon fiber winding in related technologies.

[0005] This application is implemented as follows:

[0006] In a first aspect, an example of this application provides a winding device, including a frame, a winding shaft rotatably connected to the frame, a winding limit assembly detachably connected to the frame, and a wire guiding wheel assembly fixed to the winding limit assembly. Among them, the winding limit assembly includes a sleeve, a sliding member, and a rotating shaft rotatably connected to the frame. The rotating shaft and the winding shaft are relatively spaced apart. The sleeve is sleeved outside the rotating shaft and can remain fixed when the rotating shaft rotates. A spiral chute extending along the axial direction is provided on the outer wall of the rotating shaft, and a strip-shaped hole corresponding to the spiral chute is opened on the barrel wall of the sleeve. The sliding member is slidably connected to the spiral chute, and one end of the sliding member passes through the strip-shaped hole and is connected to the wire guiding wheel assembly. The wire guiding wheel assembly is used to wind the carbon fiber at different positions along the axial direction of the winding shaft.

[0007] In the above implementation process, since one end of the sliding member is slidably connected to the spiral chute of the rotating shaft, and a sleeve that can remain fixed when the rotating shaft rotates is sleeved outside the rotating shaft, and the sleeve is provided with a strip-shaped hole extending along the axial direction of the rotating shaft, and the other end of the sliding member passes through the strip-shaped hole and is connected to the wire guiding wheel assembly outside the sleeve. Therefore, when the rotating shaft rotates, under the restrictive action of the strip-shaped hole of the sleeve, the sliding member will not move along the extending direction of the strip-shaped hole as the rotating shaft rotates, and thus will drive the wire guiding wheel assembly to move along the extending direction of the strip-shaped hole. Since the extending direction of the strip-shaped hole is consistent with the axial direction of the rotating shaft, and the rotating shaft and the winding shaft are oppositely arranged, the wire guiding wheel assembly can be driven by the slider to move along the axial direction of the winding shaft, and thus the carbon fiber at the wire guiding wheel assembly can be gradually wound to different positions along the axial direction of the winding shaft, so that the number of winding turns of the carbon fiber at different positions along the axial direction of the winding shaft is more uniform, the force on the carbon fiber at different positions along the axial direction of the winding shaft is more uniform, and the winding utilization rate of the winding shaft can also be improved.

[0008] Combined with the first aspect, in an optional implementation manner, the sliding member includes a slider and a connecting plate connected to the slider. The slider is slidably connected to the spiral chute, and the connecting plate is located outside the sleeve. The first plate wall on the side of the connecting plate facing away from the sleeve has a first region corresponding to the strip-shaped hole and a second region located outside the first region, and the second region is connected to the wire guiding wheel assembly. The winding limit assembly further includes a dust-proof sheet, one end of the dust-proof sheet is fixed to one end of the sleeve corresponding to the strip-shaped hole, and the other end of the dust-proof sheet crosses the first region and is fixed to the other end of the sleeve corresponding to the strip-shaped hole to block the strip-shaped hole.

[0009] In the above implementation process, the slider of the slider is arranged in the sleeve and slidably connected with the spiral slide groove of the rotating shaft, and the connecting plate connected to the slider is arranged outside the sleeve strip hole, so that the connecting plate can rotate axially when the winding shaft rotates. The connecting plate arranged outside the sleeve strip hole has a first area corresponding to the strip hole and a second area outside the first area. The second area of ​​the connecting plate is connected to the wire guide wheel assembly, which can drive the wire guide wheel assembly to move axially to reel the carbon fiber at the wire guide wheel assembly to different axial positions of the winding shaft. In the process of the winding device provided in the embodiment of the present application winding carbon fiber, the carbon fiber is easily rubbed to form carbon chips. If these carbon chips enter the spiral slide groove of the winding shaft from the strip hole, it is easy to cause the slider to not slide smoothly. The non-smooth sliding of the slider will produce uneven tension on the carbon fiber, which is easy to cause uneven winding of the carbon fiber or even breakage, affecting the winding quality of the carbon fiber. Therefore, in the winding device provided in the embodiment of the present application, a dust shield is also provided at the winding limit assembly. One end of the dust shield is fixed to one end of the sleeve corresponding to the strip hole, and the other end of the dust shield crosses the first area of ​​the connecting plate and is fixed to the other end of the sleeve corresponding to the strip hole, so that the dust shield can cover the strip hole without affecting the connection between the connecting plate and the guide wheel assembly, thereby reducing the probability of carbon chips or other dust entering the spiral chute. During the winding process, with the transmission of the rotating shaft, the connecting plate will slide relative to the dust shield.

[0010] In combination with the first aspect, in an optional embodiment, the first area of ​​the connecting plate has two first through holes arranged at intervals along the axial direction, and the dust block plate is passed through the two first through holes. The two ends of the dust block plate are respectively connected to the inner walls of the sleeve at the two ends of the strip hole, and the dust block plate spans the first area between the two first through holes.

[0011] Optionally, the first area between the two first through holes is an arched surface, and the arched surface protrudes toward a side away from the sleeve.

[0012] Optionally, compared with the second area, the first area between the two first through holes is closer to the sleeve.

[0013] In the above implementation process, two first through holes are set in the first area of ​​the connecting plate and are spaced apart along the axial direction of the rotating shaft. When installing the dust shield, the two ends of the dust shield can be passed through the two first through holes respectively, and the two ends of the dust shield are respectively extended into the strip holes and connected with the inner walls of the sleeve corresponding to the two ends of the strip holes, so that the dust shield can fit more closely to the inner wall of the sleeve, further reducing the probability of dust such as carbon chips entering the strip holes, further improving the sliding smoothness of the sliding part, and improving the winding quality.

[0014] In addition, the first area between the two first through holes is set as an arched surface. When the connecting plate slides relative to the dust shield, the arched surface of the connecting plate slides in contact with the dust shield, which can reduce the sliding friction between the connecting plate and the dust shield, further improve the sliding smoothness of the sliding part, and increase the service life of the connecting plate and the dust shield.

[0015] In addition, compared to the second area, the first area between the two first through holes is closer to the sleeve. When the dust shield crosses the first area between the two first through holes, the dust shield will not protrude beyond the second area, which can reduce the probability of the dust shield contacting the guide wheel assembly connected to the second area, and can further improve the sliding smoothness of the sliding part.

[0016] In combination with the first aspect, in an optional embodiment, the connecting plate has a second plate wall away from the first plate wall, and a connecting sleeve is provided at the second plate wall. The sliding block is T-shaped, and includes a sliding column and a connecting rod provided in the middle of the sliding column. The two ends of the sliding column are slidably abutted against the two side walls of the spiral sliding groove, and the connecting rod passes through the strip hole and is connected to the connecting sleeve.

[0017] In the above implementation process, the sliding block is set as a T-shaped piece, and the two ends of the sliding column in the T-shaped piece are slidably abutted against the two side walls of the spiral slide groove. The connecting rod in the T-shaped piece passes through the strip hole and is connected to the connecting sleeve at the second plate wall of the connecting plate. When the rotating shaft rotates, the limiting action between the connecting rod and the strip hole enables the sliding column to slide relative to the spiral slide groove instead of rotating with the rotating shaft, thereby enabling the connecting plate to move by utilizing the cooperation of the connecting rod and the connecting sleeve.

[0018] In combination with the first aspect, in an optional embodiment, the winding limit assembly further includes a limit sleeve sleeved on the outside of the rotating shaft, and the limit sleeve is located inside the sleeve. A second through hole is provided on the circumferential outer wall of the limit sleeve, the aperture of the second through hole is smaller than the length of the sliding column, and the connecting rod passes through the second through hole and the strip hole in sequence to connect with the connecting sleeve.

[0019] In the above implementation process, a stop sleeve is sleeved on the outer side of the rotating shaft, and a second through hole is provided at the stop sleeve, and the connecting rod can pass through the second through hole to connect with the connecting plate. In addition, since the diameter of the second through hole is smaller than the length of the sliding column, the sliding column will not pass through the second through hole and leave the spiral sliding groove, thereby improving the connection stability between the sliding column and the spiral sliding groove.

[0020] In combination with the first aspect, in an optional implementation, a protrusion is provided at the second plate wall, and the connecting sleeve passes through the outside of the protrusion; the protrusion extends into the strip hole and is connected with the limiting sleeve.

[0021] Optionally, the bump is provided with a first threaded hole, the connecting plate is provided with a second threaded hole communicating with the first threaded hole, the limiting sleeve is provided with a third threaded hole, and the screw sequentially passes through the second threaded hole, the first threaded hole and the third threaded hole to connect the bump with the limiting sleeve.

[0022] In the above implementation process, since the connection between the connecting plate and the sliding column is realized by inserting the connecting rod into the connecting sleeve at the second plate wall of the connecting plate, although the insertion of the connecting rod and the connecting sleeve can have a good limiting effect in the radial direction of the connecting rod, if a pulling force is applied to the connecting plate in the direction away from the connecting rod along the axial direction of the connecting rod, it is easy to pull the connecting plate out of the connecting rod, resulting in the separation of the slider and the connecting plate. Therefore, in order to improve the bonding strength between the slider and the connecting plate, in the embodiment of the present application, a bump is provided at the second plate wall of the connecting plate, the connecting sleeve passes out of the bump and is connected to the connecting rod, and the bump extends into the strip-shaped hole and is connected to the limiting sleeve. By using the limiting effect between the sliding column and the limiting sleeve, and the limiting effect between the limiting sleeve and the sleeve, the connection stability between the slider and the connecting plate can be enhanced.

[0023] Further, in order to facilitate the connection between the bump and the limiting sleeve, corresponding threaded holes can be provided at the connecting plate, the bump and the limiting sleeve, and the connecting plate, the bump and the limiting sleeve can be detachably connected together by sequentially passing the screw through the respective threaded holes.

[0024] Combined with the first aspect, in an optional implementation manner, the wire guiding wheel assembly includes a first mounting bracket and a second mounting bracket connected to the second region. The first mounting bracket extends toward the winding shaft and is located outside the circumferential direction of the winding shaft. At least two first wire guiding wheels are provided on the first mounting bracket at intervals, and the axial direction of the first wire guiding wheel is the same as the axial direction of the winding shaft; the second mounting bracket extends in a direction away from the winding shaft to outside the sleeve, and at least two second wire guiding wheels are arranged on the second mounting bracket at intervals, and the second wire guiding wheels are perpendicular to the sleeve. The carbon fiber can sequentially pass through each second wire guiding wheel and the first wire guiding wheel and be wound on the winding shaft.

[0025] Optionally, the second mounting bracket is further provided with at least two third wire guiding wheels with intervals, and the included angle between the axial direction of the third wire guiding wheel and the axial direction of the sleeve is 30° to 60°; the carbon fiber can sequentially pass through each second wire guiding wheel, the third wire guiding wheel and the first wire guiding wheel and be wound on the winding shaft.

[0026] In the above implementation process, a first mounting bracket facing the winding shaft and a second mounting bracket facing away from the winding shaft are connected at the second area of the connecting plate, and at least two wire guide wheels are provided at each mounting bracket. The carbon fiber can be transferred from the second wire guide wheel at the second mounting bracket to the wire guide wheel at the first mounting bracket, and then wound onto the winding shaft from the first wire guide wheel of the first mounting bracket. Moreover, a set of third wire guide wheels arranged staggeredly with the second wire guide wheels is provided at the second mounting bracket, which can adjust the direction of the carbon fiber.

[0027] Combined with the first aspect, in an optional implementation manner, the winding limit assembly includes multiple rotating shafts. The projected lengths of the spiral chutes of the multiple rotating shafts along the axial direction are different. Optionally, one of the rotating shafts is installed on the frame and connected to the sliding member and the sleeve to adjust the winding stroke of the carbon fiber wound on the winding shaft along the axial direction.

[0028] Optionally, in one of the rotating shafts, the projected length of the spiral chute is 0.4 to 0.8 times the length of the rotating shaft.

[0029] Optionally, the winding limit assembly includes at least one rotating shaft with a projected length of the spiral chute of 10 to 25 cm.

[0030] In the above implementation process, the projected length of the spiral chute of the rotating shaft along the axial direction determines the sliding stroke of the sliding member, and thus determines the winding stroke of the carbon fiber at the axial position of the winding shaft. By providing multiple rotating shafts with different projected lengths of the spiral chute in the winding limit assembly, the operator can, according to the need of the carbon fiber winding stroke, replace with different winding shafts, install the target winding shaft on the frame, and then install the sliding member and the sleeve at the winding shaft. For example, install a rotating shaft with a projected length of the spiral chute of 10 to 25 cm on the frame, and slidably connect the sliding member to the spiral chute of the rotating shaft. Then, sleeved the sleeve outside the rotating shaft, pass one end of the sliding member through the strip hole of the sleeve, and then fix the sleeve at the frame. Then, connect the end of the sliding member outside the strip hole to the wire guide wheel assembly, and thus a carbon fiber roll with a length of 10 to 25 cm can be obtained at the winding shaft.

[0031] Combined with the first aspect, in an optional implementation manner, the spiral chute includes a left-handed chute and a right-handed chute connected end to end, and the ends of the left-handed chute and the right-handed chute are smoothly transitioned so that the sliding member can reciprocally slide in the left-handed chute and the right-handed chute.

[0032] Optionally, a spiral groove for filling lubricant is provided at the bottom of the spiral chute.

[0033] Optionally, a joint is provided at one end of the rotating shaft. The joint includes a connecting bearing and a U-shaped member connected to the connecting bearing. Threaded holes and key grooves are provided on the circumferential outer wall of the connecting bearing for detachably connecting with the driving member.

[0034] In the above implementation process, the spiral chute is set as a left-handed chute and a right-handed chute that are smoothly connected at the head and tail. When the sliding member slides along a certain direction to the head or tail of the spiral chute, as the rotating shaft continues to rotate, the sliding member can continue to slide in the opposite direction, and thus the reciprocating movement of the sliding member along the axial direction can be realized without changing the rotation direction of the rotating shaft.

[0035] In a second aspect, an example of the present application provides a carbon fiber production system, including a wire drawing device, a pre-oxidation device, a carbonization and graphitization device, and a winding device provided in the first aspect, which are arranged in sequence.

[0036] When producing carbon fiber by using the carbon fiber production system provided in the embodiment of the present application, the carbon fiber filaments produced by the wire drawing device can be conveyed to the pre-oxidation device for pre-oxidation, and then conveyed to the carbonization and graphitization device for carbonization and graphitization, and then wound on the winding device provided in the first aspect of the present application through a wire guiding wheel assembly. Since the winding device provided in the embodiment of the present application is provided with a winding limit assembly and a wire guiding wheel assembly, the sliding member in the winding limit assembly can drive the wire guiding wheel assembly to move along the axial direction of the winding shaft under the combined action of the rotating shaft provided with a spiral chute and the sleeve arranged in the strip-shaped hole, and then wind the carbon fiber evenly at different positions along the axial direction of the winding shaft, so that the carbon fiber in the carbon fiber coil is more evenly stressed and the winding quality is improved. Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art.

[0038] Figure 1 A plan view of the winding device provided in the embodiment of the present application;

[0039] Figure 2 A partial cross-sectional view of the winding limit assembly provided in the embodiment of the present application;

[0040] Figure 3 A structural diagram of the rotating shaft provided in the embodiment of the present application;

[0041] Figure 4 A structural diagram of the sleeve provided in the embodiment of the present application;

[0042] Figure 5 A structural diagram of the connecting plate provided in the embodiment of the present application;

[0043] Figure 6 A structural diagram of the limit sleeve provided in the embodiment of the present application.

[0044] Icon: 1 - Rewinding device; 10 - Frame; 20 - Rewinding shaft; 30 - Rewinding limit assembly; 31 - Rotating shaft; 311 - Spiral chute; 312 - Spiral groove; 313 - Connector; 32 - Sliding member; 321 - Slide block; 3211 - Slide post; 3212 - Connecting rod; 322 - Connecting plate; 3221 - First area; 3222 - Second area; 3223 - First through hole; 323 - Connecting sleeve; 324 - Protrusion; 33 - Sleeve; 331 - Slot; 34 - Limiting sleeve; 341 - Second through hole; 35 - Dust-proof sheet; 40 - Wire guiding wheel assembly; 41 - First mounting bracket; 42 - Second mounting bracket; 43 - First wire guiding wheel; 44 - Second wire guiding wheel; 45 - Third wire guiding wheel; 2 - Carbon fiber; D1 - Axial direction. Detailed implementation manners

[0045] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and the above drawings of this application are intended to cover non-exclusive inclusion.

[0047] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality" means more than two, unless otherwise specifically defined.

[0048] Referring to "embodiments" herein means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0049] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "middle", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "bottom", "inner", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0050] Please refer to Figure 1 , the embodiment of the present application provides a winding device 1, including a frame 10, a winding shaft 20 rotatably connected to the frame, a winding limiting component 30 detachably connected to the frame, and a wire guiding wheel component 40 fixed to the winding limiting component 30.

[0051] Among them, please combine Figure 1 and Figure 2 , the winding limiting component 30 includes a sleeve 33, a sliding member 32, and a rotating shaft 31 rotatably connected to the frame. The rotating shaft 31 and the winding shaft 20 are arranged at a relatively spaced interval. The sleeve 33 is sleeved outside the rotating shaft 31 and can remain fixed when the rotating shaft 31 rotates.

[0052] Among them, please combine Figure 1 , Figure 2 and Figure 3 , a spiral chute 311 extending along its axial direction D1 is provided on the outer wall of the rotating shaft 31, and a strip-shaped hole 331 corresponding to the spiral chute 311 is provided on the barrel wall of the sleeve 33. The sliding member 32 is slidably connected to the spiral chute 311, and one end of the sliding member 32 passes through the strip-shaped hole 331 and is connected to the wire guiding wheel component 40. The wire guiding wheel component 40 is used to wind the carbon fiber 2 at different positions along the axial direction D1 of the winding shaft 20.

[0053] When using the winding device 1 provided by the embodiment of the present application to wind the carbon fiber 2, the rotating shaft 31 in the winding limiting component 30 will rotate. Since one end of the sliding member 32 is slidably connected to the spiral chute 311 of the rotating shaft 31, and the other end of the sliding member 32 passes through the strip-shaped hole 331, therefore, under the limiting action of the strip-shaped hole 331, the sliding member 32 will move along the extending direction of the strip-shaped hole 331 instead of rotating with the rotating shaft 31. Since the sliding member 32 is connected to the wire guiding wheel component 40, the wire guiding wheel component 40 can move along the axial direction D1 with the sliding member 32, and then wind the carbon fiber at the wire guiding wheel component 40 to different positions along the axial direction D1 of the winding shaft 20.

[0054] The following further describes in detail the frame 10, the winding shaft 20, the winding limiting component 30, and the wire guiding wheel component 40 in the winding device 1 provided by the embodiments of the present application in combination with the embodiments.

[0055] The frame 10 is used to mount the winding shaft 20 and the winding limit assembly 30, so that the wire guiding wheel assembly 40 connected to the winding limit assembly 30 can stably convey the carbon fiber to the winding shaft 20 for winding.

[0056] The present application does not limit the specific structure of the frame 10. In some embodiments, the frame 10 has a vertically arranged mounting wall, and two mounting positions are arranged up and down on the mounting wall. One mounting position is used to mount the winding shaft 20, and the other mounting position is used to mount the rotating shaft 31 and the sleeve 33, so that the sleeve 33, the rotating shaft 31 and the winding shaft 20 are parallel to each other.

[0057] Exemplarily, the frame 10 includes a cabinet body. Inside the cabinet body, there is a first driving member for driving the winding shaft 20 to rotate, and a second driving member for driving the rotating shaft 31 to rotate. Through holes are provided in the body wall of the cabinet body corresponding to the first driving member and the second driving member, so that the winding shaft 20 and the rotating shaft 31 can extend into the through holes to be connected to the corresponding driving members. Exemplarily, the first driving member and the second driving member are motors.

[0058] The winding shaft 20 is used for winding the carbon fiber. The present application does not limit the specific type of the winding shaft 20, and relevant personnel can select according to the conventional winding shafts in the art. For example, the winding shaft 20 can be an air shaft.

[0059] The winding limit assembly 30 is used to drive the wire guiding wheel assembly 40 to move along the axial direction D1 of the winding shaft 20, so that the wire guiding wheel assembly 40 can wind the carbon fiber at different positions along the axial direction D1 of the winding shaft 20.

[0060] In the winding limit assembly 30 provided by the embodiment of the present application, please refer to Figure 2 、 Figure 3 and Figure 4 , a spiral chute 311 is provided on the outer circumferential wall of the rotating shaft 31, and a sleeve 33 is sleeved outside the rotating shaft 31. The sleeve is provided with a strip-shaped hole 331 extending along the axial direction D1. One end of the sliding member 32 is slidably connected to the spiral chute 311 of the rotating shaft 31, and the other end of the sliding member 32 passes out of the strip-shaped hole 331. Therefore, when the rotating shaft 31 is driven to rotate by the driving member, the sliding member 32 will move along the extending direction of the strip-shaped hole 331 under the limiting action of the hole wall of the strip-shaped hole 331.

[0061] In some embodiments, in order to facilitate driving the wire guiding wheel assembly 40 to reciprocate along the axial direction D1 by means of the slider 32, a motor capable of rotating forward and backward can be used to drive the rotating shaft 31 to rotate. For example, after the motor rotates clockwise by a certain number of turns, the slider 32 gradually slides to the end of the spiral chute 311. Then, the motor rotates counterclockwise by a certain number of turns, and the slider 32 gradually slides in the opposite direction to the other end of the spiral chute 311. By repeating this cycle, the wire guiding wheel assembly 40 is driven to reciprocate.

[0062] Alternatively, in some other embodiments, please continue to refer to Figure 2 , the spiral chute 311 can be arranged as a left-handed chute and a right-handed chute connected end to end, with a smooth transition at the connection between the left-handed chute and the right-handed chute. When the rotating shaft 31 keeps the rotation direction unchanged, the slider 32 can smoothly slide from the left-handed chute to the right-handed chute, thereby driving the wire guiding wheel assembly 40 to reciprocate.

[0063] Since the slider 32 slides along the spiral chute 311, the projected length of the spiral chute 311 along the axial direction D1 will directly affect the moving stroke of the wire guiding wheel assembly 40, and further affect the winding stroke of the carbon fiber on the winding shaft 20.

[0064] In the actual production process, carbon fiber rolls with different winding strokes are often wound according to customer needs. Therefore, in some possible embodiments, multiple rotating shafts 31 with different projected lengths of the spiral chute 311 can be provided in the winding limiting assembly 30 to meet the winding of carbon fiber rolls with different strokes.

[0065] When a large-stroke carbon fiber roll needs to be wound, the rotating shaft 31 with a larger projected length of the spiral chute 311 can be installed on the frame 10, the slider 32 is slidably connected to the spiral chute 311 of the rotating shaft 31, the sleeve 33 is sleeved outside the rotating shaft 31, the other end of the slider 32 passes through the strip-shaped hole 331 of the sleeve 33, and the sleeve 33 is fixed to the frame 10.

[0066] Similarly, when a small-stroke carbon fiber roll needs to be wound, the rotating shaft 31 with a smaller projected length of the spiral chute 311 can be installed on the frame 10, the slider 32 is slidably connected to the spiral chute 311 of the rotating shaft 31, the sleeve 33 is sleeved outside the rotating shaft 31, the other end of the slider 32 passes through the strip-shaped hole 331 of the sleeve 33, and the sleeve 33 is fixed to the frame 10. Moreover, using the rotating shaft 31 with a smaller projected length of the spiral chute 311 for small-stroke winding can also relieve the mutual friction of the carbon fiber during the winding process and further improve the winding quality of the carbon fiber roll.

[0067] As an example, multiple rotating shafts 31 are provided in the winding limit assembly 30. In at least one rotating shaft 31, the projected length of the spiral chute 311 is 0.4 to 0.8 times the length of the rotating shaft 31. In at least one rotating shaft 31, the projected length of the spiral chute 311 is the same as the length of the rotating shaft 31.

[0068] Exemplarily, the projected length of the spiral chute 311 can be one of 0.4 times, 0.5 times, 0.6 times, 0.7 times, or 0.8 times the length of the rotating shaft 31, or within the range between any two of them.

[0069] Exemplarily, the winding limit assembly 30 includes at least one rotating shaft 31 with the projected length of the spiral chute 311 being 10 to 25 cm. For example, in the rotating shaft 31, the projected length of the spiral chute 311 can be 18 cm.

[0070] Furthermore, the present application does not limit how the sliding member 32 is specifically connected to the spiral chute 311 and the wire guiding wheel assembly 40 at the same time. In some possible embodiments, please continue to refer to Figure 2 and Figure 3 . The sliding member 32 includes a slider 321 and a connecting plate 322 connected to the slider 321. The slider 321 is slidably connected to the spiral chute 311, and the connecting plate 322 is located outside the sleeve 33 to facilitate the connection of the connecting plate 322 to the wire guiding wheel assembly 40 outside the sleeve 33.

[0071] As an example, the slider 321 is T-shaped and includes a sliding column 3211 and a connecting rod 3212 provided in the middle of the sliding column 3211. Both ends of the sliding column 3211 are slidably abutted against the two side walls of the spiral chute 311, and the connecting rod 3212 passes through the strip-shaped hole 331 to be connected to the connecting plate 322.

[0072] Furthermore, in order to improve the smoothness of the sliding of the sliding column 3211 in the spiral chute 311 and reduce the sliding friction, in some possible embodiments, lubricant can be introduced into the spiral chute 311.

[0073] Furthermore, in order to further improve the lubricity, in some possible embodiments, please continue to refer to Figure 2 . A spiral groove 312 for filling lubricant can be provided at the bottom of the spiral chute 311.

[0074] The present application does not limit the specific dimensions of the spiral chute 311 and the spiral groove 312. In some embodiments, the width of the spiral chute 311 can be 1 cm, and the width of the spiral groove 312 can be 0.4 cm.

[0075] Furthermore, in order to facilitate the connection of the rotating shaft 31 to a driving member such as a motor, in some possible embodiments, please continue to refer to Figure 3A joint 313 is provided at one end of the rotating shaft 31. The joint 313 includes a connecting bearing and a U-shaped member connected to the connecting bearing. The circumferential outer wall of the connecting bearing is provided with a threaded hole and a keyway for detachably connecting with the driving member.

[0076] The present application does not limit how the connecting plate 322 located outside the sleeve 33 is connected to the connecting rod 3212. In some embodiments, please continue to refer to Figure 1 and Figure 2 The connecting plate 322 has a second plate wall facing the sleeve 33 and a first plate wall arranged opposite to the second plate wall. A connecting sleeve 323 can be arranged at the second plate wall, and the connecting rod 3212 is extended into the connecting sleeve 323. The first plate wall is connected to the guide wheel assembly 40.

[0077] In order to further improve the connection stability between the slider 321 and the spiral slide groove 311, in some embodiments, please continue to refer to Figure 2 and Figure 6 The winding limit assembly 30 also includes a limit sleeve 34. The limit sleeve 34 is sleeved on the outer side of the rotating shaft 31, and the limit sleeve 34 is located inside the sleeve 33. A second through hole 341 is provided on the circumferential outer wall of the limit sleeve 34, and the connecting rod 3212 passes through the second through hole 341 and is connected to the connecting sleeve 323. In addition, the aperture of the second through hole 341 is smaller than the length of the sliding column 3211, so that the sliding column 3211 located in the spiral chute 311 cannot pass through the second through hole 341, thereby radially limiting the slider 321. It can be understood that the inner diameter of the limit sleeve 34 is consistent with the outer diameter of the rotating shaft 31, so that the limit sleeve 34 can be sleeved outside the rotating shaft 31, and can prevent the sliding column 3211 from escaping from the spiral chute 311.

[0078] Further, in order to improve the connection stability between the slider 321 and the connecting plate 322, in some embodiments, please continue to refer to Figure 2 A protrusion 324 can be provided at the second plate wall of the connecting plate 322 , the connecting sleeve 323 is passed through the protrusion 324 , and the protrusion 324 is extended into the strip hole 331 to be detachably connected with the limiting sleeve 34 .

[0079] As an example, a first threaded hole can be set at the protrusion 324, a second threaded hole connected to the first threaded hole can be set at the connecting plate 322, and a third threaded hole can be set at the limiting sleeve 34. The screw passes through the second threaded hole, the first threaded hole and the third threaded hole in sequence to connect the protrusion 324 with the limiting sleeve 34.

[0080] The sliding smoothness of the sliding column 3211 in the spiral chute 311 directly affects the movement smoothness of the wire guiding wheel assembly 40, and further affects the winding quality of the carbon fiber at the winding shaft 20. If dust accumulates in the spiral chute 311, when the sliding column 3211 slides to the accumulated dust, the sliding column 3211 will get stuck. Since the winding shaft 20 continues to rotate, more turns of carbon fiber will be wound at the position of the sliding column 3211 corresponding to the winding shaft 20, resulting in uneven winding. Moreover, when the sliding column 3211 gets stuck when encountering the accumulated dust, as the rotating shaft 31 continues to rotate, a large force will be generated on the sliding column 3211, causing the sliding column 3211 to slide violently over the accumulation, resulting in a sudden increase in the moving speed of the wire guiding wheel assembly 40. The moving speed of the wire guiding wheel assembly 40 is erratic, which not only easily causes the tension of the carbon fiber to be erratic, resulting in different degrees of wear and even breakage, but also affects the winding uniformity.

[0081] Therefore, in order to further improve the winding uniformity of the winding device 1, in some possible embodiments, a dust blocking piece 35 can be provided at the winding limit assembly 30. Along the width direction of the strip-shaped hole 331, the first plate wall of the connecting plate 322 has a first region 3221 and a second region 3222 located outside the first region 3221, and the second region 3222 is connected to the wire guiding wheel assembly 40. One end of the dust blocking piece 35 is fixed to one end of the sleeve 33 corresponding to the strip-shaped hole 331, and the other end of the dust blocking piece 35 crosses the first region 3221 and is fixed to the other end of the sleeve 33 corresponding to the strip-shaped hole 331 to block the strip-shaped hole 331.

[0082] During the movement of the slider 321 driving the connecting plate 322, the connecting plate 322 slides relative to the dust blocking piece 35 located at the first region 3221 of the connecting plate 322. Since the dust blocking piece 35 is located at the first region 3221 of the connecting plate 322, the dust blocking piece 35 does not hinder the connection between the second region 3222 located outside the first region 3221 and the wire guiding wheel assembly 40. By using the dust blocking piece 35 to block the strip-shaped hole 331, the probability of carbon chips and other dust entering the spiral chute 311 from the strip-shaped hole 331 can be reduced.

[0083] The dust blocking piece 35 can be a stainless steel thin sheet, which has a certain flexibility and can cross the connecting plate 322 to fix its two ends to the sleeve 33.

[0084] In order to further improve the dust blocking effect of the dust blocking piece 35 on the strip-shaped hole 331, in some embodiments, please continue to combine Figure 2 and Figure 4Two first through holes 3223 spaced apart along the axial direction D1 can be set in the first area 3221 of the connecting plate 322, and the dust block sheet 35 is passed through the two first through holes 3223. The two ends of the dust block sheet 35 are respectively connected to the inner wall of the sleeve 33 at the two ends of the strip hole 331, and the dust block sheet 35 spans the first area 3221 between the two first through holes 3223.

[0085] Both ends of the dust shield 35 are located inside the sleeve 33, and the dust shield 35 can cover the strip hole 331 from the inside. In addition, part of the dust shield 35 will extend out of the strip hole 331 and pass through the two first through holes 3223 of the connecting plate 322, and the connecting plate 322 will press the dust shield 35 tightly, which can reduce the gap between the dust shield 35 and the strip hole 331, further improving the dust blocking effect.

[0086] Further, in order to reduce the sliding friction between the connecting plate 322 and the dust shield 35 and improve the moving smoothness of the connecting plate 322, in some embodiments, please continue to refer to Figure 5 The first area 3221 between the two first through holes 3223 can be set as an arched surface, and the arched surface protrudes toward the side away from the sleeve 33, and the dust shield 35 slides relatively along the arched surface.

[0087] As an example, the arched surface may be a curved surface. Alternatively, the arched surface includes two inclined slopes.

[0088] Further, in order to prevent the dust shield 35 located between the two first through holes 3223 from protruding out of the second area 3222 and contacting the guide wheel assembly 40, in some embodiments, please continue to combine Figure 2 and Figure 5 Compared with the second area 3222, the first area 3221 between the two first through holes 3223 is closer to the sleeve 33. That is, the first area 3221 between the two first through holes 3223 is recessed to a certain depth toward the sleeve 33, and when the dust shield 35 crosses the first area 3221, the outer surface of the dust shield 35 will not protrude outside the recess.

[0089] The godet assembly 40 is used to pull the carbon fiber, and driven by the sliding member 32 , winds the carbon fiber at different axial positions of the winding shaft 20 along the axial direction D1 of the rotating shaft 31 .

[0090] The present application does not limit the specific structure of the guide wheel assembly 40. In some implementations, please continue to refer to Figure 1, the wire guiding wheel assembly 40 includes a first mounting bracket 41 and a second mounting bracket 42 connected to the second region 3222. The first mounting bracket 41 extends towards the winding shaft 20 and is located on the circumferential outer side of the winding shaft 20. At least two first wire guiding wheels 43 are arranged at intervals on the first mounting bracket 41, and the axial direction of the first wire guiding wheels 43 is consistent with the axial direction of the winding shaft 20. The second mounting bracket 42 extends in a direction away from the winding shaft 20 to outside the sleeve 33, and at least two second wire guiding wheels 44 are arranged on the second mounting bracket 42 at intervals, and the second wire guiding wheels 44 are perpendicular to the sleeve 33. The carbon fiber 2 can pass through each of the second wire guiding wheels 44 and the first wire guiding wheels 43 in sequence and be wound on the winding shaft 20.

[0091] This application does not limit how the first mounting bracket 41 and the second mounting bracket 42 are connected to the second region 3222. In some embodiments, a detachable mounting plate can be installed at the second region 3222 of the connecting plate 322, and the first mounting bracket 41 and the second mounting bracket 42 can be fixedly connected to the mounting plate.

[0092] Furthermore, at least two third wire guiding wheels 45 are also arranged on the second mounting bracket 42 at intervals, and the included angle between the axial direction of the third wire guiding wheels 45 and the axial direction of the sleeve 33 is 30° to 60°. The carbon fiber 2 can pass through each of the second wire guiding wheels 44, the third wire guiding wheels 45 and the first wire guiding wheels 43 in sequence and be wound on the winding shaft 20.

[0093] As an example, please continue to refer to Figure 1 , the wire guiding wheel assembly 40 includes two second wire guiding wheels 44, two third wire guiding wheels 45 and three first wire guiding wheels 43. The diameter of the second wire guiding wheels 44 is larger than that of the third wire guiding wheels 45. During winding, the carbon fiber 2 can pass through between the two second wire guiding wheels 44, and then pass into between the two third wire guiding wheels 45, and then pass through the three first wire guiding wheels 43 in an S-shaped path in sequence and be wound on the winding shaft 20.

[0094] Furthermore, the embodiment of the present application also provides a carbon fiber production system (not shown in the figure), including a wire drawing device, a pre-oxidation device, a carbonization and graphitization device and the winding device 1 provided by the embodiment of the present application arranged in sequence.

[0095] The wire drawing device is used to draw the polymer raw material into fiber filaments, and then convey the fiber filaments to the pre-oxidation device for pre-oxidation. The pre-oxidized fiber filaments will be conveyed to the carbonization and graphitization device for carbonization and graphitization to obtain carbon fiber. The carbon fiber will be conveyed to the wire guiding wheel assembly 40 of the winding device 1 and then wound onto the winding shaft 20. The wire drawing device, the pre-oxidation device and the carbonization and graphitization device in the embodiment of the present application can be selected from the conventional production systems in the art, and this application does not make any restrictions.

[0096] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A winding device, characterized in that, It includes a frame, a winding shaft rotatably connected to the frame, a winding limit assembly detachably connected to the frame, and a guide wire wheel assembly fixed to the winding limit assembly; The winding limit assembly includes a sleeve, a sliding member and a rotating shaft rotatably connected to the frame, and the rotating shaft and the winding shaft are arranged relatively spaced apart; the sleeve is sleeved on the outer side of the rotating shaft and can be kept fixed when the rotating shaft rotates; The outer wall of the rotating shaft is provided with a spiral groove extending along its axial direction, and the cylinder wall of the sleeve is provided with a strip hole corresponding to the spiral groove; the sliding member is slidably connected to the spiral groove, and one end of the sliding member passes through the strip hole and is connected to the guide wheel assembly, and the guide wheel assembly is used to wind the carbon fiber at different positions of the winding shaft along the axial direction.

2. The rewinding device according to claim 1, wherein, The sliding member comprises a slider and a connecting plate connected to the slider, the slider is slidably connected to the spiral slide groove, and the connecting plate is located outside the sleeve; along the width direction of the strip hole, the first plate wall of the connecting plate on the side away from the sleeve has a first area and a second area outside the first area, and the second area is connected to the guide wheel assembly; The winding limit assembly also includes a dust block, one end of which is fixed to one end of the sleeve corresponding to the strip hole, and the other end of the dust block crosses the first area and is fixed to the other end of the sleeve corresponding to the strip hole to cover the strip hole.

3. The coiling device according to claim 2, wherein, The first region of the connecting plate has two first through holes spaced apart along the axial direction, the dust shield is passed through the two first through holes, two ends of the dust shield are respectively connected to the inner walls of the sleeve at two ends of the strip hole, and the dust shield spans the first region between the two first through holes; Optionally, the first region between the two first through holes is an arched surface, and the arched surface protrudes toward a side away from the sleeve; Optionally, compared to the second area, the first area between two first through holes is closer to the sleeve.

4. The coiling device according to claim 3, characterized in that, The connecting plate has a second plate wall facing away from the first plate wall, and a connecting sleeve is arranged at the second plate wall; The sliding block is T-shaped and includes a sliding column and a connecting rod arranged in the middle of the sliding column; the two ends of the sliding column are slidably abutted against the two side walls of the spiral sliding groove, and the connecting rod passes through the strip hole and is connected to the connecting sleeve.

5. The rewinding device according to claim 4, wherein, The winding limit assembly also includes a limit sleeve which is sleeved on the outside of the rotating shaft, and the limit sleeve is located inside the sleeve; a second through hole is provided on the circumferential outer wall of the limit sleeve, and the aperture of the second through hole is smaller than the length of the sliding column, and the connecting rod passes through the second through hole and the strip hole in sequence to be connected with the connecting sleeve.

6. The rewinding device according to claim 5, characterized in that, The second plate wall is provided with a protrusion, and the connecting sleeve passes through the protrusion; the protrusion extends into the strip hole and is connected with the limiting sleeve; Optionally, the bump is provided with a first threaded hole, the connecting plate is provided with a second threaded hole communicating with the first threaded hole, and the limiting sleeve is provided with a third threaded hole. A screw sequentially passes through the second threaded hole, the first threaded hole, and the third threaded hole to connect the bump to the limiting sleeve.

7. The coiling device according to claim 2, characterized in that, The wire guiding wheel assembly includes a first mounting bracket and a second mounting bracket connected to the second region. The first mounting bracket extends towards the winding shaft and is located on the circumferential outer side of the winding shaft. At least two first wire guiding wheels are arranged at intervals on the first mounting bracket, and the axial directions of the first wire guiding wheels are all the same as the axial direction of the winding shaft; the second mounting bracket extends away from the winding shaft to the outside of the sleeve, and the second mounting bracket is provided with at least two second wire guiding wheels arranged at intervals, and the second wire guiding wheels are perpendicular to the sleeve; the carbon fiber can sequentially pass through each of the second wire guiding wheels and the first wire guiding wheels and be wound on the winding shaft; Optionally, the second mounting bracket is further provided with at least two third wire guiding wheels arranged at intervals. The included angle between the axial direction of the third wire guiding wheels and the axial direction of the sleeve is 30° to 60°; the carbon fiber can sequentially pass through each of the second wire guiding wheels, the third wire guiding wheels, and the first wire guiding wheels and be wound on the winding shaft.

8. The coiling device according to any one of claims 1 to 7, characterized in that, The winding limiting assembly includes a plurality of the rotating shafts. The projected lengths of the spiral chutes of the plurality of rotating shafts along the axial direction are different. Optionally, one of the rotating shafts is installed on the frame and connected to the sliding member and the sleeve to adjust the winding stroke of the carbon fiber wound on the winding shaft along the axial direction; Optionally, in one of the rotating shafts, the projected length of the spiral chute is 0.4 to 0.8 times the length of the rotating shaft; Optionally, the winding limiting assembly includes at least one rotating shaft with the projected length of the spiral chute being 10 to 25 cm.

9. The coiling device according to claim 8, wherein The spiral chute includes a left-handed chute and a right-handed chute connected end to end, and the ends of the left-handed chute and the right-handed chute are smoothly transitioned so that the sliding member can reciprocally slide in the left-handed chute and the right-handed chute; Optionally, the bottom of the spiral chute is provided with a spiral groove for filling lubricant; Optionally, one end of the rotating shaft is provided with a joint. The joint includes a connecting bearing and a U-shaped member connected to the connecting bearing. The circumferential outer wall of the connecting bearing is provided with a threaded hole and a keyway for detachably connecting to a driving member.

10. A carbon fiber production system, characterized in that, It includes a wire drawing device, a pre-oxidation device, a carbonization and graphitization device, and the winding device according to any one of claims 1 to 9 arranged in sequence.

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