A fiber unspinning device

Abstract

This application provides a fiber filament unwinding device, belonging to the field of carbon fiber manufacturing technology. The fiber filament unwinding device includes a support, a guide roller, and an unwinding roller. At least one end of the guide roller is rotatably connected to the support for receiving fiber filaments and conveying them downstream. A PVC pipe is detachably fitted onto the unwinding roller. In the fiber filament conveying direction, the unwinding roller is located upstream of the guide roller and distributed side-by-side with it. One end of the unwinding roller is rotatably connected to the support to unwind the fiber filaments wound on the PVC pipe located on the unwinding roller by rotation. The unwinding roller is configured to reciprocate along its axial direction. This fiber filament unwinding device solves the problem of difficulty in unwinding caused by the inability to completely fit the PVC pipe onto the unwinding roller.

Description

Technical Field

[0001] This application relates to the field of carbon fiber manufacturing technology, and more specifically, to a fiber filament unwinding device. Background Technology

[0002] Carbon fiber is a new type of material with excellent mechanical properties, derived from organic fibers through a series of heat treatment processes. Its carbon content exceeds 90%. Carbonization is a crucial step in carbon fiber production. The first step in carbonization involves using a de-firing device to remove the fiber filaments wound on a PVC pipe. However, PVC pipes are prone to deformation in the central area during long-term use, making it difficult to completely fit the PVC pipe with the fiber filaments onto the de-firing roller (i.e., the PVC pipe with the fiber filaments is difficult to align with the guiding area of ​​the downstream guide roller), thus hindering the de-firing of the fiber filaments. Utility Model Content

[0003] The purpose of this application is to provide a fiber filament unwinding device that can solve the problem that it is difficult to unwind PVC pipes because they are difficult to completely cover the unwinding roller.

[0004] The embodiments of this application are implemented as follows: In a first aspect, embodiments of this application provide a fiber filament unwinding device, including a support, a guide roller, and an unwinding roller. At least one end of the guide roller is rotatably connected to the support for receiving fiber filaments and conveying them downstream; a PVC pipe is detachably sleeved on the unwinding roller. In the fiber filament conveying direction, the unwinding roller is located upstream of the guide roller and distributed side by side with the guide roller. One end of the unwinding roller is rotatably connected to the support to unwind the fiber filaments wound on the PVC pipe located on the unwinding roller by rotation, and the unwinding roller is configured to reciprocate along the axial direction of the unwinding roller.

[0005] In the above technical solution, the unwinding roller is located upstream of the guide roller and is distributed side by side with the guide roller. The unwinding roller is configured to reciprocate along the axial direction of the unwinding roller. When the middle area of ​​the PVC pipe is slightly deformed, the undeformed end area of ​​the PVC pipe can be fitted onto the unwinding roller. At the same time, the inner wall of the deformed area of ​​the PVC pipe can be engaged with the outer wall of the unwinding roller, so that the PVC pipe is stably fitted onto the unwinding roller. Then, by moving the unwinding roller along the axial direction, the fiber filaments wound on the PVC pipe located on the unwinding roller can fall into the guiding area of ​​the downstream guide roller, thereby solving the problem that the PVC pipe is difficult to be completely fitted onto the unwinding roller, which makes it difficult to unwind.

[0006] In some alternative embodiments, the unwinding roller includes a base and a roller shaft, the roller shaft being detachably fitted with a PVC pipe, one end of the roller shaft being rotatably connected to the base, the base being connected to a support and configured to reciprocate along the axial direction of the roller shaft.

[0007] In the above technical solution, the unwinding roller is configured to have a base and a roller shaft that cooperate. Specifically, one end of the roller shaft is rotatably connected to the base, and the base is connected to the support and configured to reciprocate along the axial direction of the roller shaft. This type of unwinding roller has the advantages of a relatively simple structure and easy assembly.

[0008] In some alternative embodiments, the roller includes a support shaft, a support sleeve, and an air-expanding sleeve. One end of the support shaft is rotatably connected to the base. The support sleeve and the air-expanding sleeve are arranged sequentially along a first direction, with the air-expanding sleeve located on the side closer to the base. Both the support sleeve and the air-expanding sleeve are fitted onto and fixed to the support shaft. Both the support sleeve and the air-expanding sleeve are used for detachably fitting PVC pipes.

[0009] In the above technical solution, the roller is configured as a combination of a support shaft, a support sleeve, and an air-expanding sleeve. Specifically, one end of the support shaft is rotatably connected to the base. Both the support sleeve and the air-expanding sleeve are fitted onto and fixed to the support shaft, with the air-expanding sleeve located closer to the base. When the PVC pipe is fitted onto the outer wall of the support sleeve and the air-expanding sleeve, the support sleeve mainly serves to bear weight and support the PVC pipe. At the same time, by inflating the air-expanding sleeve to increase its volume, the PVC pipe can be more securely fixed to the support shaft. This effectively improves the problem that the PVC pipe is easily detached from the guide roller's guide range during the unwinding process due to the action of the fiber filaments (the fiber filaments usually have a certain tilt angle when wound on the PVC pipe, making it easy for the PVC pipe to move along the axial direction of the support shaft during the unwinding process). It also helps to improve the unwinding stability and smoothness of the unwinding device.

[0010] In some alternative implementations, in the first direction, the end faces of the support bushing and the air-expanding bushing abut against each other.

[0011] In the above technical solution, the end faces of the support bushing and the air expansion bushing approach each other in the first direction, which helps to improve the stability of the overall structure of the roller. At the same time, the end face contact between the two also makes it easier to fit the entire PVC pipe onto the roller (if there is a large gap between the end faces of the support bushing and the air expansion bushing, when fitting the PVC pipe, the end of the PVC pipe may contact the end of the air expansion bushing located at the gap, which will make it inconvenient to fit the PVC pipe).

[0012] In some alternative embodiments, the air-expanding bushing includes a first equal-thickness section and a first tapered section connected together. The first tapered section is located on the side away from the base. Along a first direction, the thickness of the first tapered section gradually decreases from the side close to the first equal-thickness section to the side away from the first equal-thickness section, and the end face of the first tapered section abuts against the end face of the support bushing.

[0013] In the above technical solution, the air expansion bushing is configured to have a first equal-thickness section and a first gradual-thickness section that cooperate with each other. Specifically, along the first direction, the thickness of the first gradual-thickness section gradually decreases and the end face of the first gradual-thickness section abuts against the end face of the support bushing. When air is injected into the air expansion bushing, this configuration can provide a certain deformation space for the air expansion bushing, which helps to reduce the risk of the air expansion bushing breaking due to the pressure of the end face of the support bushing during the expansion process.

[0014] In some alternative embodiments, the support bushing includes a connected second equal-thickness section and a second tapered section, the second tapered section being located on the side away from the base, and the thickness of the second tapered section gradually decreasing from the side closer to the second equal-thickness section to the side away from the second equal-thickness section along a first direction.

[0015] In the above technical solution, the support bushing is configured to have a second equal-thickness section and a second gradual section that cooperate with each other. Specifically, along the first direction, the second gradual section is located on the side away from the base and its thickness gradually decreases. This configuration makes the end size of the free end of the support bushing smaller, which makes it easier to put the PVC pipe onto the support bushing.

[0016] In some alternative implementations, in the first direction, the size ratio of the support bushing to the air bushing is (3~5):1.

[0017] In the above technical solution, the dimensional ratio of the support bushing and the air expansion bushing in the first direction is limited to the above range, so that the structural division of the support bushing is more reasonable, thereby better taking into account both the supporting role of the support bushing and the fixing role of the air expansion bushing.

[0018] In some alternative implementations, the support shaft is rotatably connected to the base via bearings.

[0019] In the above technical solution, bearings are used as a rotatable connection structure, which has advantages such as simple structure and small space occupation.

[0020] In some alternative embodiments, along the first direction, the air nozzle of the air sleeve is opened on the end face of the air sleeve near the base, and the air nozzle is connected to the air source of the external device via a rotary joint located at the corresponding end of the air sleeve and the fixing part of the bearing.

[0021] In the above technical solution, the air nozzle on the air expansion bushing is connected to the air source of the external device through the above-mentioned arrangement, which has the advantages of relatively simple structure and relatively compact overall structure of the unwinding shaft.

[0022] In some alternative implementations, the base and the support are slidably connected along the axial direction of the guide roller.

[0023] The above technical solution uses a sliding connection to realize the reciprocating motion of the base in the axial direction, which has the advantages of relatively simple structure and high stability during movement. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a fiber filament unwinding device provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a desiccant roller provided in an embodiment of this application; Figure 3 This is a schematic diagram of another unwinding roller provided in an embodiment of this application; Figure 4 A schematic diagram illustrating a combination of a support bushing and an air-expanding bushing provided in an embodiment of this application; Figure 5 This is a schematic diagram of a support bushing provided in an embodiment of this application; Figure 6 This is a schematic diagram of the air nozzle area of ​​an air expansion bushing provided in an embodiment of this application.

[0026] Icons: 10-Fiber filament unwinding device; 100-Support; 110-Bearing plate; 200-Guide roller; 300-Unwinding roller; 310-Base; 320-Roller shaft; 321-Support shaft; 322-Support bushing; 3221-Second equal thickness section; 3222-Second gradient section; 323-Air expansion bushing; 3231-First equal thickness section; 3232-First gradient section; 3233-Air nozzle; 400-Bearing; 410-Outer ring; 420-Inner ring; 500-Rotary joint; 510-Annular fixing part; 520-Annular rotating part. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this application, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] The following is a detailed description of a fiber filament unwinding device provided in the embodiments of this application.

[0033] See Figure 1In a first aspect, embodiments of this application provide a fiber filament unwinding device 10, including a support 100, a guide roller 200, and an unwinding roller 300. At least one end of the guide roller 200 is rotatably connected to the support 100 for receiving fiber filaments and conveying them downstream; the unwinding roller 300 is detachably fitted with a PVC pipe. In the fiber filament conveying direction, the unwinding roller 300 is located upstream of the guide roller 200 and is distributed side by side with the guide roller 200. One end of the unwinding roller 300 is rotatably connected to the support 100 to unwind the fiber filaments wound on the PVC pipe located on the unwinding roller 300 by rotation, and the unwinding roller 300 is configured to reciprocate along the axial direction of the unwinding roller 300.

[0034] In this application, the unwinding roller 300 is located upstream of the guide roller 200 and is distributed side by side with the guide roller 200. The unwinding roller 300 is configured to reciprocate along the axial direction of the unwinding roller 300. When the middle area of ​​the PVC pipe is slightly deformed, the undeformed end area of ​​the PVC pipe can be sleeved on the unwinding roller 300. At the same time, the inner wall of the deformed area of ​​the PVC pipe can be engaged with the outer wall of the unwinding roller 300, so that the PVC pipe is stably sleeved on the unwinding roller 300. Then, by moving the unwinding roller 300 along the axial direction of the unwinding roller 300, the fiber filaments wound on the PVC pipe located on the unwinding roller 300 can fall into the guiding area of ​​the downstream guide roller 200, thereby solving the problem that the PVC pipe is difficult to completely sleeve on the unwinding roller 300, which makes it difficult to unwind.

[0035] It should be noted that the form of the bracket 100 is not limited, as long as it can provide installation positions for the guide roller 200 and the unwinding roller 300. For example, the bracket 100 can be a split type, that is, installation components are set for the guide roller 200 and the unwinding roller 300 respectively.

[0036] It should be noted that the guide roller 200 may be rotatably connected to the support 100 at one end and / or both ends in the axial direction, as long as it can rotate relative to the support 100 to achieve the purpose of conveying the fiber filament. In the embodiments of this application, the form in which both ends of the guide roller 200 are rotatably connected to the support 100 in the axial direction is taken as an example.

[0037] It should be noted that the way the guide roller 200 and the bracket 100 are rotatably connected is not limited. In this embodiment, a rotatable connection via bearings is taken as an example.

[0038] It should be noted that "the unwinding roller 300 and the guide roller 200 are arranged side by side" means that their axes are the same. Only by moving the unwinding roller 300 can the fiber filaments wound on the PVC pipe located on the unwinding roller 300 fall into the guide area of ​​the downstream guide roller 200.

[0039] It should be noted that the unwinding roller 300 is rotatably connected to the bracket 100 at only one end because the end not connected to the bracket 100 needs to be a free end, through which the PVC tube with the fiber filaments wound around it can be sleeved onto the unwinding roller 300.

[0040] See Figure 2 As an example, the unwinding roller 300 includes a base 310 and a roller 320. The roller 320 is used to detachably mount a PVC pipe. One end of the roller 320 is rotatably connected to the base 310. The base 310 is connected to the bracket 100 and is configured to reciprocate along the axial direction of the roller 320.

[0041] In this embodiment, the unwinding roller 300 is configured such that the base 310 and the roller shaft 320 cooperate. Specifically, one end of the roller shaft 320 is rotatably connected to the base 310. The base 310 is connected to the bracket 100 and is configured to reciprocate along the axial direction of the roller shaft 320. This type of unwinding roller 300 has the advantages of simple structure and easy assembly.

[0042] It should be noted that the axial direction of roller 320 is the same as that of unwinding roller 300, and it is the same as that of guide roller 200.

[0043] It should be noted that the form of the roller 320 is not limited. For example, it can be an integrated air expansion shaft or an integrated metal support shaft. The specific form can be adapted to meet actual needs.

[0044] It should be noted that when the base 310 and the bracket 100 are connected, the method by which the base 310 can reciprocate along the axial direction of the unwinding roller 300 is not limited. For example, it can be a combination of a slider and a guide rail, a cylinder-driven method, or a screw and nut-driven method.

[0045] As an example, the base 310 and the support 100 are slidably connected along the axial direction of the guide roller 200 (i.e., the slider and the guide rail are engaged).

[0046] In this embodiment, a sliding connection is used to realize the reciprocating motion of the base 310 in the axial direction, which has the advantages of relatively simple structure and high stability during movement.

[0047] It should be noted that the positions of the slider and guide rail are not limited. For example, the slider can be set on the base 310 and the guide rail can be set on the bracket 100, or the guide rail can be set on the base 310 and the guide rail can be set on the bracket 100. The specific selection can be made according to actual needs.

[0048] See Figure 2As an example, the support 100 is provided with a support plate 110 in the area corresponding to the base 310. The top of the support plate 110 is provided with a guide rail extending along the axial direction of the guide roller 200. The bottom of the base 310 is provided with a slider corresponding to the guide rail. The base 310 is slidably connected to the support plate 110 through the slider and the guide rail.

[0049] It should also be noted that, since the fiber filaments are usually wound at a certain angle on the PVC pipe to ensure that they are laid flat and evenly on the PVC pipe, the fiber filaments will exert a certain force on the PVC pipe during the unwinding process using the unwinding device. This makes the PVC pipe more likely to move along the axial direction of the support shaft 321 during the unwinding process, which in turn makes it easier for the fiber filaments wound on the PVC pipe on the unwinding roller 300 to detach from the guide area of ​​the guide roller 200.

[0050] Based on this, in order to solve the problem that the unwinding device is unable to effectively unwind due to the above reasons, the inventors further optimized the structure of the roller 320, and the specific solution is as follows: See Figure 3 As an example, the roller 320 includes a support shaft 321, a support sleeve 322, and an air-expanding sleeve 323. One end of the support shaft 321 is rotatably connected to the base 310. The support sleeve 322 and the air-expanding sleeve 323 are arranged sequentially along a first direction, and the air-expanding sleeve 323 is located on the side closer to the base 310. Both the support sleeve 322 and the air-expanding sleeve 323 are sleeved and fixed on the support shaft 321. The outside of the support sleeve 322 and the outside of the air-expanding sleeve 323 are used for detachably sleeved PVC pipes.

[0051] It should be noted that the first direction is the same as the axial direction of the guide roller 200 and the axial direction of the support shaft 321.

[0052] It should be noted that both the support bushing 322 and the air-expanding bushing 323 are sleeved and fixed on the support shaft 321 so that they can rotate synchronously with the support shaft 321; the sleeve and support shaft 321 are conventional technical means in the field and will not be described in detail in this embodiment.

[0053] In this embodiment, the roller 320 is configured as a combination of a support shaft 321, a support sleeve 322, and an air-expanding sleeve 323. Specifically, one end of the support shaft 321 is rotatably connected to the base 310. The support sleeve 322 and the air-expanding sleeve 323 are both sleeved and fixed on the support shaft 321, with the air-expanding sleeve 323 located on the side closer to the base 310. When the PVC pipe is sleeved on the outer wall of the support sleeve 322 and the air-expanding sleeve 323, the support sleeve 322 mainly plays the role of bearing weight and supporting the PVC pipe. At the same time, by inflating the air-expanding sleeve 323 to increase its volume, the PVC pipe can be more securely fixed on the support shaft 321. This effectively improves the problem that the PVC pipe is easily detached from the guide roller 200 under the action of the fiber filament during the unwinding process, and also helps to improve the unwinding stability and smoothness of the unwinding device.

[0054] It should be noted that the material of the support bushing 322 is not limited. For example, it can be stainless steel, alloy steel or aluminum alloy. The specific material can be adjusted according to actual needs.

[0055] It should be noted that the relative positional relationship between the support bushing 322 and the air expansion bushing 323 on the support shaft 321 is not limited. For example, the end faces of the two that are close to each other can be in abutting form or in a spaced-out form (i.e., there is a gap between the end faces of the two). The specific arrangement can be adapted according to actual needs.

[0056] See Figure 3 As an example, in the first direction, the end faces of the support bushing 322 and the air-expanding bushing 323 abut against each other.

[0057] In this embodiment, the end faces of the support bushing 322 and the air expansion bushing 323 approaching each other in the first direction abut against each other, which helps to improve the stability of the overall structure of the roller 320. At the same time, the abutment of their end faces also makes it easier to fit the entire PVC pipe onto the roller 320 (if there is a gap between the end faces of the support bushing 322 and the air expansion bushing 323, when fitting the PVC pipe, the end of the PVC pipe may abut against the end of the air expansion bushing 323 located at the gap, which may cause inconvenience in fitting the PVC pipe).

[0058] See Figure 4 As an example, the air-expanding bushing 323 includes a first equal-thickness section 3231 and a first gradient section 3232 connected together. The first gradient section 3232 is located on the side away from the base 310. Along the first direction, the thickness of the first gradient section 3232 gradually decreases from the side close to the first equal-thickness section 3231 to the side away from the first equal-thickness section 3231, and the end face of the first gradient section 3232 abuts against the end face of the support bushing 322.

[0059] In this embodiment, the air-expanding bushing 323 is configured to have a first uniform thickness section 3231 and a first gradual thickness section 3232 that cooperate with each other. Specifically, along the first direction, the thickness of the first gradual thickness section 3232 gradually decreases and the end face of the first gradual thickness section 3232 abuts against the end face of the support bushing 322. When air is inflated into the air-expanding bushing 323, this configuration can provide a certain deformation space for the air-expanding bushing 323, which helps to reduce the risk of the air-expanding bushing 323 breaking due to the pressure of the end face of the support bushing 322 during the expansion process.

[0060] See Figure 5 As an example, the support bushing 322 includes a second equal-thickness section 3221 and a second gradient section 3222 connected together. The second gradient section 3222 is located on the side away from the base 310. Along a first direction, the thickness of the second gradient section 3222 gradually decreases from the side close to the second equal-thickness section 3221 to the side away from the second equal-thickness section 3221.

[0061] In this embodiment, the support bushing 322 is configured to have a second equal-thickness section 3221 and a second gradual section 3222 cooperating with each other. Specifically, along the first direction, the second gradual section 3222 is located on the side away from the base 310 and its thickness gradually decreases. This configuration makes the end size of the free end of the support bushing 322 smaller, thereby facilitating the fitting of the PVC pipe onto the support bushing 322.

[0062] It should be noted that the relative dimensions of the support bushing 322 and the air expansion bushing 323 in the first direction are not limited. For example, the support bushing 322 and the air expansion bushing 323 can be the same length, or the support bushing 322 can be longer than the air expansion bushing 323, or the support bushing 322 can be shorter than the air expansion bushing 323. The specific dimensions can be adjusted according to actual needs.

[0063] As an example, in the first direction, the size ratio of the support bushing 322 and the air bushing 323 is (3~5):1, for example, but not limited to any one of the size ratios of 3:1, 3.5:1, 4:1, 4.5:1 and 5:1 or any range between the two.

[0064] In this embodiment, the dimensional ratio of the support bushing 322 and the air expansion bushing 323 in the first direction is limited to the above-mentioned range, so that the structural division of the support bushing 322 is more reasonable, thereby better balancing the supporting function of the support bushing 322 and the fixing function of the air expansion bushing 323.

[0065] As an example, the support shaft 321 and the base 310 are rotatably connected via a bearing 400.

[0066] In this embodiment, bearing 400 is used as a rotatable connection structure, which has the advantages of simple structure and small space occupation.

[0067] It should be noted that the airflow path connection method of the air expansion bushing 323 is not limited and can be set according to the conventional selection in this field.

[0068] See Figure 6 As an example, along the first direction, the air nozzle 3233 of the air sleeve 323 is opened on the end face of the air sleeve 323 near the base 310, and the air nozzle 3233 is connected to the air source of the external device via the rotary joint 500 located at the corresponding end of the air sleeve 323 and the fixing part of the bearing 400.

[0069] In this embodiment, the air nozzle 3233 on the air expansion bushing 323 is connected to the air source of the external device through the above-mentioned arrangement, which has the advantages of relatively simple structure and relatively compact overall structure of the unwinding shaft.

[0070] To better understand the technical solution, a specific configuration of a bearing 400 is provided here for further explanation.

[0071] See Figure 6 As an example, the bearing 400 is embedded in the base 310 and the outer ring 410 of the bearing 400 is fixedly connected to the base 310. The inner ring 420 of the bearing 400 is drivenly connected to the support shaft 321 so that the support shaft 321 can rotate synchronously with the inner ring 420 of the bearing 400. The rotary joint 500 is located between the corresponding end faces of the outer ring 410 of the bearing 400 and the air-expanded bushing 323. The rotary joint 500 includes a rotatable and sealed annular fixed part 510 and an annular rotating part. 520, wherein the annular fixed part 510 is fixedly connected to the outer ring 410 of the bearing 400 and the two are internally connected (so that airflow can pass through), the annular rotating part 520 is connected to one end of the air expansion sleeve 323 where the air nozzle 3233 is provided, and the sealed chamber formed by the annular rotating part 520 is connected to the air nozzle 3233, so that the air nozzle 3233 can be connected to the external air source pipeline after passing through the annular rotating part 520, the annular fixed part 510, and the outer ring 410 of the bearing 400 in sequence.

[0072] It should be noted that the annular fixed part 510 and the annular rotating part 520 are configured to be rotatable and sealed together in order to allow external airflow to pass through sequentially during rotation. Figure 6 The air passage (i.e., the pipe without a cross-section) delivers the air to the air nozzle 3233.

[0073] It should be noted that the sealing connection between the annular fixed part 510 and the annular rotating part 520 is not limited. For example, the annular fixed part 510 and the annular rotating part 520 can achieve sealing during rotation by rotating the sealing ring.

[0074] In this embodiment, the above-described configuration can effectively achieve airflow delivery and also effectively solve the problem of the air delivery pipeline becoming tangled during the rotation of the air expansion sleeve 323.

[0075] It should be noted that structural or functional units in the unwinding device that are not specifically described or limited can be set according to conventional choices in the field.

[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fiber strand disentangling device characterized by, include: support; A guide roller, at least one end of which is rotatably connected to the support, is used to receive fiber filaments and transport them downstream; A fiber stripping roller is provided, which is used to detachably mount a PVC pipe. In the fiber filament conveying direction, the fiber stripping roller is located upstream of the guide roller and is distributed side by side with the guide roller. One end of the fiber stripping roller is rotatably connected to the bracket so as to strip the fiber filaments wound on the PVC pipe located on the fiber stripping roller by rotation. The fiber stripping roller is configured to reciprocate along the axial direction of the fiber stripping roller.

2. The fiber unspinning device according to claim 1, characterized in that, The unwinding roller includes a base and a roller shaft. A PVC pipe is detachably sleeved on the outside of the roller shaft. One end of the roller shaft is rotatably connected to the base. The base is connected to the bracket and is configured to reciprocate along the axial direction of the roller shaft.

3. The fiber unspinning device according to claim 2, characterized in that, The roller includes a support shaft, a support sleeve, and an air-expanding sleeve. One end of the support shaft is rotatably connected to the base. The support sleeve and the air-expanding sleeve are arranged sequentially along a first direction, and the air-expanding sleeve is located on the side closer to the base. Both the support sleeve and the air-expanding sleeve are sleeved and fixed on the support shaft. Both the support sleeve and the air-expanding sleeve are used for detachably sleeved PVC pipes.

4. The fiber unspinning device according to claim 3, characterized in that, In the first direction, the end faces of the support bushing and the air-expanding bushing abut against each other.

5. The fiber unspinning device according to claim 4, characterized in that, The air-expanding bushing includes a first equal-thickness section and a first gradient section connected together. The first gradient section is located on the side away from the base. Along the first direction, the thickness of the first gradient section gradually decreases from the side close to the first equal-thickness section to the side away from the first equal-thickness section, and the end face of the first gradient section abuts against the end face of the support bushing.

6. The fiber unspinning device according to claim 3, characterized in that, The support bushing includes a second equal-thickness section and a second gradient section connected together. The second gradient section is located on the side away from the base. Along the first direction, the thickness of the second gradient section gradually decreases from the side closer to the second equal-thickness section to the side away from the second equal-thickness section.

7. The fiber unspinning device according to claim 3, characterized in that, In the first direction, the size ratio of the support bushing to the air-expanding bushing is (3~5):

1.

8. The fiber unspinning device according to claim 3, characterized in that, The support shaft and the base are rotatably connected via bearings.

9. The fiber unspinning device according to claim 8, characterized in that, Along the first direction, the air nozzle of the air-expanding bushing is opened on the end face of the air-expanding bushing near the base, and the air nozzle is connected to the air source of the external device via a rotary joint located at the corresponding end of the air-expanding bushing and the fixing part of the bearing.

10. The fiber unspinning device according to claim 2, characterized in that, The base and the bracket are slidably connected along the axial direction of the guide roller.

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