Fiber bundle twisting device
By using a flat roller group and a tapered roller group with a preset angle in the fiber bundle twisting device, problems such as splitting, flashing, and partial stacking during the fiber bundle twisting process are solved, and the production quality of the fiber bundle is improved.
Patent Information
- Application Number
- CN202422298566.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-20
AI Technical Summary
In the existing fiber bundle winding process, fiber bundles are prone to problems such as splitting, flashing, and partial stacking during the twisting process, which affects the production quality of the fiber bundles.
A fiber bundle twisting device including a twisting interval, a plurality of flat roller groups and a tapered roller group is adopted. By setting a preset angle flat roller group and a tapered roller group, the fiber bundle maintains a good expansion shape during twisting, and avoids problems such as splitting, flashing, and partial stacking.
It effectively improves the quality of the fiber bundle, avoids problems such as splitting, flashing, and partial stacking, and improves the production quality of the fiber bundle.
Smart Images
Figure CN223161201U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of winding devices, and particularly relates to a fiber bundle twisting device. Background Art
[0002] By embedding fiber filaments as reinforcement into a resin matrix, high-performance continuous fiber composites can be made, which have the advantages of light weight, low modulus, strong mechanical properties, corrosion resistance, etc. At present, continuous fiber composites are widely used not only in the fields of aerospace, automobile manufacturing and military industry, but also show unique advantages in many fields such as sports equipment and electronic products. In the production process of continuous fiber composites, the fiber filaments go through processes such as pre-oxidation, carbonization, and surface treatment, and can form a strip-shaped fiber bundle with parallel fiber filaments and a certain width. The fiber bundle is usually wound into a shaft for subsequent production use. However, in the existing fiber bundle winding process, the fiber bundle usually needs to be twisted multiple times before being wound onto the shaft. In this process, various problems such as splitting, flashing, and local stacking are likely to occur, seriously reducing the production quality of the fiber bundle, and thus affecting the application of continuous fiber composites. Summary of the Utility Model
[0003] To overcome the problems existing in the related art, the utility model provides a fiber bundle twisting device.
[0004] The fiber bundle twisting device provided by the utility model includes:
[0005] A twisting section, in which the fiber bundle can twist a preset angle around a preset rotating shaft, and the axial direction of the preset rotating shaft is parallel to the conveying direction of the fiber bundle;
[0006] A plurality of flat roller groups, in the conveying direction, the plurality of flat roller groups are respectively connected to the front end and the rear end of each twisting section, and the included angle between the projections of the axes of the plurality of flat roller groups located at the front end and the rear end of the same twisting section on a preset plane is equal to the preset angle;
[0007] At least one conical roller group, arranged in the twisting section, the conical roller group includes at least one first conical roller, and in the circumferential direction of the preset rotating shaft, the at least one first conical roller evenly divides the preset angle into multiple parts.
[0008] In some embodiments, the conical roller group includes one first conical roller, and in the circumferential direction of the preset rotating shaft, the first conical roller evenly divides the preset angle into two parts.
[0009] In some embodiments, in the conveying direction, the at least one first conical roller evenly divides the twisting section into multiple parts.
[0010] In some embodiments, the conical roller set further includes a second conical roller. In the conveying direction, the second conical roller is arranged at the end of the conical roller set, and the axial direction of the second conical roller is parallel to the axial direction of the flat roller set connected to the end of the corresponding twisting interval.
[0011] In some embodiments, the conical roller set further includes a conical roller set bracket, and the conical roller set bracket includes a linear track, and the first conical roller is slidably connected to the linear track.
[0012] In some embodiments, the fiber bundle twisting device includes a plurality of the twisting intervals, and the axial directions of the flat roller sets between two adjacent twisting intervals are parallel to each other.
[0013] In some embodiments, the flat roller set includes at least one first flat roller set, the first flat roller set corresponds to the twisting interval one by one and is connected to the front end of the corresponding twisting interval, and the first flat roller set includes at least one first flat roller, and the first flat roller is used to change the conveying direction of the fiber bundle.
[0014] In some embodiments, the flat roller set includes a second flat roller set, the second flat roller set is arranged at the outermost end of the fiber bundle twisting device, the second flat roller set includes a second flat roller, and the second flat roller is used to wind up the fiber bundle.
[0015] In some embodiments, the flat roller set includes at least one third flat roller set, and a third flat roller set is arranged between the outermost twisting interval in the fiber bundle twisting device and the second flat roller set. The third flat roller set includes a plurality of third flat rollers, and the third flat rollers are used to broaden the fiber bundle, and at least one of the third flat rollers can vibrate.
[0016] In some embodiments, the fiber bundle twisting device includes two third flat roller sets, and the two third flat roller sets are respectively connected to the front end and the end of the outermost twisting interval in the fiber bundle twisting device.
[0017] The beneficial effects of the present utility model are as follows:
[0018] In the fiber bundle twisting device provided by the present utility model, the roller surface of the first conical roller can provide a guiding and tension balancing effect for the fiber bundle, so that the fiber bundle can still maintain a good unfolded shape during twisting, avoiding problems such as splitting, flashing, and local stacking, and improving the quality of the produced fiber bundle. Description of the Drawings
[0019] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.
[0020] Figure 1 Schematic diagram of a fiber bundle twisting device shown according to an exemplary embodiment;
[0021] Figure 2 is Figure 1 Schematic diagram of the projection of the middle flat roller group and the conical roller group in the conveying direction;
[0022] Figure 3 Schematic diagram of a fiber bundle twisting device shown according to an exemplary embodiment;
[0023] Figure 4 is Figure 3 Schematic diagram of the projection of the first third flat roller group one, the first third flat roller group two and the second conical roller group in the conveying direction.
[0024] Figure 5 Schematic cross-sectional view of a first conical roller shown according to an exemplary embodiment.
[0025] In the figure: 10 - twisting interval; 10a - twisting interval one; 10b - twisting interval two; 1 - conical roller group; 1a - conical roller group one; 1b - conical roller group two; 11 - first conical roller; 11a - first conical roller one; 11b - first conical roller two; 111 - bearing; 12 - second conical roller; 13 - conical roller group bracket; 2a - first flat roller group; 2b - second flat roller group; 3a - first first flat roller group; 3b - first first flat roller group; 31 - first flat roller; 41 - second flat roller; 5a - first third flat roller group; 5b - second third flat roller group; 51 - third flat roller; 6 - fiber bundle. Detailed implementation manners
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
[0027] The filaments used to form a fiber bundle are basic untwisted long chemical fiber filaments assembled from thousands of single filaments. Since the filaments are usually relatively soft and the single filaments they contain are basically assembled without twist, various problems are likely to occur during the twisting process, affecting the production quality of the fiber bundle. First, it is easy to cause the resin matrix adhesion between the filaments to break, resulting in the destruction of the bundling property of the fiber bundle, and causing problems such as splitting and flashing of the fiber bundle. Second, when the fiber bundle is twisted, local filament stacking is likely to form on the contact surface with the guide roller, resulting in uneven stress on the filaments in the fiber bundle, and causing problems such as edge overlapping, twisting, "skirt edge" of wire withdrawal, and false twisting of wire withdrawal. Third, it is easy to cause single filament breakage and form hairiness due to increased local tension, resulting in a decrease in the quality of the fiber bundle.
[0028] To solve the problems existing in the related art, a fiber bundle twisting device is provided in this application, including a twisting section, a plurality of flat roller groups, and at least one conical roller group. In the conveying direction, the plurality of flat roller groups are respectively connected to the front end and the end of each twisting section, and the angle between the projections of the axes of the plurality of flat roller groups located at the front end and the end of the same twisting section on a preset plane is equal to a preset angle, causing the fiber bundle to twist. The fiber bundle can twist a preset angle around a preset rotating shaft in the twisting section, where the axis direction of the preset rotating shaft is parallel to the conveying direction of the fiber bundle. The conical roller group is arranged in the twisting section and includes at least one first conical roller. In the circumferential direction of the preset rotating shaft, at least one first conical roller evenly divides the preset angle into multiple parts, so that the axial directions of the first conical rollers are sequentially matched with the width direction of the fiber bundle. The roller surface of the first conical roller can provide guidance for the fiber bundle and effectively balance the tension on the fiber bundle, enabling the fiber bundle to maintain a good unfolded shape in its own width direction during twisting, avoiding problems such as splitting, flashing, and local stacking, and improving the quality of the produced fiber bundle.
[0029] As shown in Figure 1 , an embodiment of this application provides a fiber bundle twisting device, including a twisting section 10, a plurality of flat roller groups (refer to the flat roller group one 2a and the flat roller group two 2b shown in Figure 1 ), and at least one conical roller group 1. In the conveying direction of the fiber bundle 6 ( Figure 1 shown as the +x direction), the plurality of flat roller groups are respectively connected to the front end and the end of each twisting section 10, and the angle between the projections of the axes of the plurality of flat roller groups located at the front end and the end of the same twisting section 10 on a preset plane is equal to a preset angle. As an example, referring to Figure 1 , in the conveying direction, the front end and the end of the twisting section 10 are respectively connected to the flat roller group one 2a and the flat roller group two 2b. Referring to Figure 2 , in the projection on a preset plane (a plane perpendicular to the conveying direction), the axis of the flat roller group one 2a is as shown in Figure 2 in the +m direction, and the axis of the flat roller group two 2b is as shown in Figure 2The +n direction is shown. An included angle with a preset angle α is formed between the +m direction and the +n direction. During the process of the fiber bundle 6 being conveyed from the first flat roller group 2a to the second flat roller group 2b, the fiber bundle 6 is twisted by the preset angle α in its own width direction.
[0030] Continue to refer to Figure 1 , during the process of the fiber bundle 6 being conveyed from the first flat roller group 2a to the second flat roller group 2b, the fiber bundle 6 passes through the twisting interval 10 and twists by the preset angle α around the preset rotation axis in the twisting interval 10. The twisting interval 10 is the space for twisting the fiber bundle 6. The axial direction of the preset rotation axis is parallel to the conveying direction of the fiber bundle 6 ( Figure 1 the +x direction shown), and the conveying direction of the fiber bundle 6 remains unchanged in the twisting interval 10.
[0031] The set number of the twisting intervals 10 and the magnitude of the preset angle α corresponding to each twisting interval 10 can be set according to the twisting requirement of the fiber bundle 6, so that the sum of the preset angles α corresponding to each twisting interval 10 is equal to the twisting requirement angle of the fiber bundle 6. When the twisting requirement angle of the fiber bundle 6 is relatively large, the number of the twisting intervals 10 can be increased, or the magnitude of the preset angle α can be increased. In one twisting interval 10, the suitable range of the preset angle α is generally 0 - 180°, and more preferably 0 - 90°. For example, refer to Figure 3 , when the twisting requirement angle of the fiber bundle 6 is 180°, two twisting intervals can be set (refer to Figure 3 the first twisting interval 10a and the second twisting interval 10b shown), and the fiber bundle 6 is twisted twice. The preset angles corresponding to the two twisting intervals are both 90°. Or, for example, three twisting intervals can also be set, and the preset angles corresponding to the three twisting intervals are 50°, 60° and 70° respectively.
[0032] As Figure 1 shown, a conical roller group 1 is arranged in the twisting interval 10. The conical roller group 1 includes at least one first conical roller 11, which can support and guide the fiber bundle 6 in the twisting interval 10, and effectively balance the tension on the fiber bundle 6 at the same time, so that the fiber bundle 6 can still maintain its good unfolded form in its own width direction during twisting, and avoid problems such as splitting, flashing, and local stacking.
[0033] As Figure 2 shown, in the circumferential direction of the preset rotation axis, the first conical roller 11 evenly divides the preset angle α into multiple parts. In one example, refer to Figure 2 , the first conical roller 11 divides the preset angle α into a first sub-preset angle α1 and a second sub-preset angle α2, and the first sub-preset angle α1 is equal to the second sub-preset angle α2. In another example, refer to Figure 4, the first conical roller 11a and the second conical roller 11b divide the preset angle α into a third sub-preset angle α3, a fourth sub-preset angle α4, and a fifth sub-preset angle α5, and the third sub-preset angle α3, the fourth sub-preset angle α4, and the fifth sub-preset angle α5 are all equal. With such a setting, the axial direction of the conical rollers in the conical roller group can better fit the twist change of the fiber bundle in the twist interval, improving the effect of the conical roller group, effectively releasing the stacking caused by the twisting of the fiber bundle, avoiding problems such as flipping, twisting, and edge overlapping of the fiber bundle at high winding line speeds, and at the same time reducing the phenomenon of false twisting of the fiber bundle after winding in the subsequent wire unwinding process.
[0034] In actual production, to improve the utilization efficiency of the production space and at the same time reduce the volume of the production equipment, the length of the twist interval 10 can be controlled. On the basis of ensuring a certain twist effect, the length of the twist interval 10 is shortened as much as possible, and at the same time the number of the first conical rollers 11 arranged in the twist interval 10 is reduced. In one embodiment, as Figure 1 and Figure 2 shown, the conical roller group 1 includes a first conical roller 11. In the circumferential direction of the preset rotating shaft, the first conical roller 11 evenly divides the preset angle α into two parts. In one example, referring to Figure 2 , there is a preset angle α between the first flat roller group 2a and the second flat roller group 2b, and the preset angle α is 90°. There is a first sub-preset angle α1 between the first conical roller 11 and the first flat roller group 2a, and there is a second sub-preset angle α2 between the first conical roller 11 and the second flat roller group 2b. The first sub-preset angle α1 and the second sub-preset angle α2 are equal and both are 45°. Thus, it can not only ensure the twist effect and prevent problems such as stacking of the fiber bundle, but also reduce the volume of the equipment at the same time, realizing the simplification of the production system.
[0035] In one embodiment, as Figure 1 shown, in the conveying direction ( Figure 1 shown +x direction), at least one first conical roller 11 evenly divides the twist interval 10 into multiple parts, so as to provide guidance and support for the fiber bundle 6 as evenly as possible in the twist interval 10. For example, referring to Figure 1 , the conical roller group 1 includes a first conical roller 11. In the conveying direction, the first conical roller 11 evenly divides the twist interval 10 into two parts, that is, the first conical roller 11 is arranged at the middle position of the twist interval 10, and the distances between the first conical roller 11 and the first flat roller group 2a and the second flat roller group 2b are equal. Another example, referring to Figure 3, the second conical roller set 1b includes two first conical rollers, namely the first conical roller 11a and the first conical roller 11b. In the conveying direction, the first conical roller 11a and the first conical roller 11b evenly divide the twisting interval 10b into three parts, that is, the first conical roller 11a and the first conical roller 11b are respectively arranged at the 1 / 3 and 2 / 3 positions of the twisting interval 10b.
[0036] In one embodiment, as Figure 3 shown, the conical roller set (refer to the conical roller set 1a and the conical roller set 1b shown in Figure 3 ) further includes a second conical roller 12. In the conveying direction ( Figure 3 the +x direction shown), the second conical roller 12 is arranged at the end of the conical roller set. The axial direction of the second conical roller 12 is parallel to the axis direction of the flat roller set connected to the end of the corresponding twisting interval 10. As an example, refer to Figure 3 , taking the conical roller set 1a as an example, the second conical roller 12 is arranged at the end of the conical roller set 1a in the conveying direction. The fiber bundle 6 leaves the twisting interval 10a through the second conical roller 12 and is continuously conveyed to the flat roller set connected to the end of the twisting interval 10a (refer to the second first flat roller set 3b shown in Figure 3 ). The axial direction of the second conical roller 12 ( Figure 3 the z direction shown) is parallel to the axis direction of the second first flat roller set 3b, and can be used as a transition roller between the first conical roller 11 and the second first flat roller set 3b, which is used to assist in widening the fiber bundle 6 after the fiber bundle 6 is twisted by the first conical roller 11, and can further reduce the phenomena such as overlapping edges and twisting generated after the fiber bundle 6 is twisted.
[0037] In one embodiment, as Figure 3 shown, the conical roller set further includes a conical roller set bracket 13. The conical roller set bracket 13 includes a linear track, and the first conical roller 11 is slidably connected to the linear track. As described above, the first conical roller 11 evenly divides the twisting interval 10 in the conveying direction. Through the linear track, the positions of the first conical rollers 11 in the conical roller set can be conveniently adjusted. In addition, the first conical roller 11 can also be detachably connected to the linear track, so as to facilitate adjusting the number of the first conical rollers 11 in the twisting interval 10 and improve the flexibility of the device. The linear track can be in various forms such as a guide rail, a linear groove, etc., which are not limited here.
[0038] In one embodiment, as Figure 3As shown, the first tapered roller 11 and the second tapered roller 12 are connected to the tapered roller group bracket 13 through a connecting piece, and the connecting piece is slidingly connected to the linear track of the tapered roller group bracket 13, thereby driving the first tapered roller 11 to move. At the same time, the connecting piece can also be rotatably connected to the first tapered roller 11 and the second tapered roller 12, and is used to adjust the axial direction of the first tapered roller 11 and the second tapered roller 12, thereby further improving the flexibility of the device.
[0039] In one embodiment, if Figure 5 As shown, the first conical roller 11 is a hollow structure, and at least one bearing 111 is provided inside the first conical roller 11 for enabling the first conical roller 11 to rotate synchronously with the delivery of the fiber bundle, thereby reducing the friction between the roller surface and the fiber bundle. Figure 5 , a plurality of bearings 111 are provided inside the first tapered roller 11, and the axial direction of each bearing 111 is aligned with the axial direction of the first tapered roller 11 ( Figure 5 The first tapered roller 11 is overlapped with the first tapered roller 11 in the z direction shown in the figure, which can effectively prevent the first tapered roller 11 from shaking greatly when the fiber bundle 6 is transported quickly, thereby affecting the torsion effect. Figure 5 -z direction as shown), the diameter of each bearing 111 increases successively, which has stronger structural stability.
[0040] In one embodiment (not shown in the drawings), the taper of the first conical roller can also be optimized based on factors such as the length of the torsional interval, the number of first conical rollers in the torsional interval, and the width of the fiber bundle, so that on the projection plane parallel to the conveying direction, the projection lengths of each monofilament in the fiber bundle between two adjacent first conical rollers, or between adjacent first conical rollers and the flat roller group, can tend to be consistent, so as to balance the tension of the fiber bundle in its own width direction and avoid the situation where one side of the fiber bundle is subjected to greater stretching, resulting in excessive tension, and is stacked and wound toward the other side with smaller tension.
[0041] In one embodiment, if Figure 3 As shown, the fiber bundle twisting device includes multiple twisting sections (refer to Figure 3 As shown in the torsional interval 10a and the torsional interval 2 10b), each flat roller group between two adjacent torsional intervals (reference Figure 3 The axis directions of the first flat roller group 2 3b and the third flat roller group 2 5b are parallel to each other. When the fiber bundle 6 is transported between the torsional zone 1 10a and the torsional zone 2 10b, the axis directions of the first flat roller group 2 3b and the third flat roller group 2 5b are parallel to each other (both parallel to Figure 3 Such an arrangement effectively prevents the fiber bundle 6 from twisting in the area where the tapered roller set 1 is not provided, thereby causing problems such as stacking and flashing, which may affect the quality of the fiber bundle.
[0042] In actual production, in addition to being twisted, the fiber bundle 6 often needs to change its conveying direction. Therefore, a mechanism for changing the conveying direction can be provided in the fiber bundle twisting device. In one embodiment, as Figure 3 shown, the flat roller group includes at least one first flat roller group (refer to the first flat roller group 3a and the second flat roller group 3b shown in Figure 3 ). The first flat roller group corresponds to the twisting section 10 one by one and is connected to the front end of the corresponding twisting section 10. The first flat roller group includes at least one first flat roller 31, and the first flat roller 31 is used to change the conveying direction of the fiber bundle 6. As an example, referring to Figure 3 , the first flat roller group 3a is arranged at the front end of the first twisting section 10a, and can change the conveying direction of the fiber bundle 6 from the Figure 3 shown -z direction to the +x direction before the fiber bundle 6 enters the first twisting section 10a. The second flat roller group 3b is arranged at the front end of the second twisting section 10b, and can translate the conveying direction of the fiber bundle 6 along the Figure 3 shown +y direction before the fiber bundle 6 enters the second twisting section 10b.
[0043] In one embodiment, as Figure 3 shown, the flat roller group includes a second flat roller group, and the second flat roller group is arranged at the outermost end of the fiber bundle twisting device (the Figure 3 shown +x direction end). The second flat roller group includes a second flat roller 41, and the second flat roller 41 is used to wind up the fiber bundle 6. The fiber bundle 6 is wound up to form a wound fiber spool, which can be uniformly transported and stored for subsequent process use.
[0044] Before the fiber bundle is wound up, the fiber bundle can be fully widened so that the fiber bundle is well unfolded along its own width direction to be tiled and wound around the second flat roller 41 to obtain a wound fiber spool with uniform winding and good quality. Therefore, a mechanism for fully widening the fiber bundle can be provided at the front end of the second flat roller group. In one embodiment, as Figure 3 shown, the flat roller group includes at least one third flat roller group (refer to the first third flat roller group 5a and the second third flat roller group 5b). A third flat roller group (refer to the first third flat roller group 5a) is arranged between the outermost twisting section (refer to the second twisting section 10b) in the fiber bundle twisting device and the second flat roller group (refer to the position of the second flat roller 41). The third flat roller group includes a plurality of third flat rollers 51. For example, the first third flat roller group 5a includes three third flat rollers 51, and the third flat rollers 51 are used to widen the fiber bundle 6, and at least one third flat roller 51 can vibrate to improve the widening effect through vibration.
[0045] Continue to refer to Figure 3, the vibrating third flat roller 51 can drive the fiber bundle 6 to oscillate, and thus affect the winding stability of the fiber bundle 6 on the second flat roller 41. Therefore, the third flat roller 51 located at the end of the third flat roller group can be set as a fixed roller to reduce the influence of vibration on the winding of the fiber bundle.
[0046] In one embodiment, as Figure 3 shown, two third flat roller groups (refer to the first third flat roller group 5a and the second third flat roller group 5b) can be provided in the fiber bundle twisting device. The two third flat roller groups are respectively connected to the front end and the end of the last twisting section (refer to the second twisting section 10b) in the fiber bundle twisting device, that is, the fiber bundle 6 is subjected to vibration-assisted broadening before and after the last twisting section, so as to further improve the broadening effect.
[0047] In one embodiment, the roller surfaces of the conical rollers and the flat rollers in the fiber bundle twisting device can be ground and polished and have a coating, such as a Ni-P-Al2O3 composite electroplating layer, to ensure that the roller surfaces have extremely high wear resistance and surface finish, reduce the friction between the roller surfaces and the fiber bundle, avoid damaging the fiber bundle, and prevent problems such as an increase in fiber bundle fuzz and finger wheel wire entanglement.
[0048] The content described in the embodiments of this specification is only a list of the implementation forms of the utility model concept. The protection scope of the utility model should not be regarded as limited to the specific forms stated in the embodiments. The protection scope of the utility model also includes equivalent technical means that those skilled in the art can think of according to the utility model concept.
Claims
1. A fiber bundle twisting device, characterized in that Comprising: A twisting interval, in which the fiber bundle can twist by a preset angle around a preset rotating shaft, and the axial direction of the preset rotating shaft is parallel to the conveying direction of the fiber bundle; A plurality of flat roller groups, in the conveying direction, the plurality of flat roller groups are respectively connected to the front end and the end of each twisting interval, and the included angle between the projections of the axes of the plurality of flat roller groups located at the front end and the end of the same twisting interval on a preset plane is equal to the preset angle; At least one conical roller group, arranged in the twisting interval, the conical roller group includes at least one first conical roller, and in the circumferential direction of the preset rotating shaft, the at least one first conical roller evenly divides the preset angle into multiple parts.
2. The fiber bundle twisting device according to claim 1, characterized in that, The conical roller group includes one first conical roller, and in the circumferential direction of the preset rotating shaft, the first conical roller evenly divides the preset angle into two parts.
3. The fiber bundle twisting device according to claim 1, characterized in that In the conveying direction, the at least one first conical roller evenly divides the twisting interval into multiple parts.
4. The fiber bundle twisting device according to claim 1, characterized in that, The conical roller group further includes a second conical roller, in the conveying direction, the second conical roller is arranged at the end of the conical roller group, and the axial direction of the second conical roller is parallel to the axis direction of the flat roller group connected to the end of the corresponding twisting interval.
5. The fiber bundle twisting device according to claim 1, wherein, The conical roller group further includes a conical roller group bracket, the conical roller group bracket includes a linear track, and the first conical roller is slidably connected to the linear track.
6. The fiber bundle twisting device according to claim 1, characterized in that, The fiber bundle twisting device includes a plurality of the twisting intervals, and the axis directions of the flat roller groups between adjacent two twisting intervals are parallel to each other.
7. The fiber bundle twisting device according to claim 1, characterized in that, The flat roller group includes at least one first flat roller group, the first flat roller group corresponds to the twisting interval one by one and is connected to the front end of the corresponding twisting interval, the first flat roller group includes at least one first flat roller, and the first flat roller is used to change the conveying direction of the fiber bundle.
8. The fiber bundle twisting device according to claim 1, characterized in that, The flat roller group includes a second flat roller group, the second flat roller group is arranged at the outermost end of the fiber bundle twisting device, the second flat roller group includes a second flat roller, and the second flat roller is used to wind up the fiber bundle.
9. The fiber bundle twisting device according to claim 8, characterized in that, The flat roller group includes at least one third flat roller group, a third flat roller group is arranged between the outermost twisting interval in the fiber bundle twisting device and the second flat roller group, the third flat roller group includes a plurality of third flat rollers, the third flat rollers are used to widen the fiber bundle, and at least one of the third flat rollers can vibrate.
10. The fiber bundle twisting device according to claim 9, characterized in that, The fiber bundle twisting device includes two third flat roller groups, and the two third flat roller groups are respectively connected to the front end and the end of the outermost twisting interval in the fiber bundle twisting device.