A braided multi-angle carbon fiber tube for unmanned aerial vehicles and its production line and preparation process

Abstract

The present invention provides a braided multi-angle carbon fiber tube for unmanned aerial vehicles and a production line and a preparation process thereof, which are used to solve the problem in the prior art that it is impossible to ensure production efficiency while making the braiding angle of carbon fiber meet the application of carbon fiber tubes in the field of unmanned aerial vehicles. In order to achieve the above purpose and other related purposes, the present invention provides a production line for braiding multi-angle carbon fiber tubes for unmanned aerial vehicles, the production line includes a first angle braiding unit and a second angle braiding unit, the second angle braiding unit can weave the fiber yarn on the surface of the core mold at 0°, and the first angle braiding unit can weave the fiber yarn to the surface of the core mold, so that the production line can use the pultrusion process to ensure production efficiency while ensuring that the physical properties of the fiber yarn layer can meet product requirements, thereby solving the problem that it is impossible to ensure production efficiency while making the braiding angle of carbon fiber meet the application of carbon fiber tubes in the field of unmanned aerial vehicles.

Description

Technical Field

[0001] The present invention belongs to the field of carbon fiber tube production, and in particular relates to a braided multi-angle carbon fiber tube for a UAV and a production line and a preparation process thereof. Background Art

[0002] On drones, drone tubes are used in different parts of the drone body, and drone tubes made of carbon fiber can not only reduce the drone's own weight and increase its endurance, but also increase the drone's service life.

[0003] When preparing carbon fiber drone tubes, winding, tube rolling, molding, pultrusion and other processes are usually used. When preparing carbon fiber drone tubes by winding process, although the winding rules can be designed according to the stress conditions of carbon fiber drone tubes, the winding molding adaptability of this process is small, and the axial performance of carbon fiber drone tubes cannot be improved, and carbon fiber drone tubes have higher requirements for axial performance; when preparing carbon fiber drone tubes by tube rolling process, although a variety of fiber angle designs can be achieved according to the stress conditions of carbon fiber drone tubes, which is more selective than winding process, its product molding efficiency is low and the cost is high; when preparing carbon fiber drone tubes by molding process, there are many manual operations, the process is cumbersome, and it is difficult to achieve automated production; when preparing carbon fiber drone tubes by pultrusion process, this process can easily achieve the continuity of carbon fiber, has a high degree of automation, and its production efficiency is also very high, but the carbon fiber drone tubes produced in this way are difficult to meet the strength requirements of carbon fiber drone tubes in terms of anti-bending and anti-tensile properties due to the number of fiber layers and angle restrictions.

[0004] In summary, the shortcomings of the existing production line of carbon fiber tubes for drones are that they cannot meet the requirements of high automation to produce carbon fiber drone tubes that meet the requirements of bending resistance and tensile resistance. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a braided multi-angle carbon fiber tube for drones and its production line and preparation process, which are used to solve the problem in the prior art that it is impossible to ensure the production efficiency while making the braiding angle of the carbon fiber meet the application of carbon fiber tubes in the field of drones.

[0006] The present invention provides a production line for braiding carbon fiber tubes for multi-angle drones, the production line comprising:

[0007] forward operating platform;

[0008] A core mold, the core mold is pulled by the advancing operating table and advances along the axis direction of the core mold;

[0009] A plurality of first-angle braiding units, wherein the fiber yarns braided by the first-angle braiding units are first fiber yarns, and the plurality of first-angle braiding units each include a rotating disk and a first yarn tube, wherein the rotating disk is penetrated by a first through hole, and the first through hole is used to prevent the core mold from extending from the axial position of the rotating disk, and the rotating disk is capable of spinning, and the rotation axis of the rotating disk is parallel to the axis of the core mold. A plurality of first yarn tubes are provided on an end surface of the rotating disk, and the first fiber yarns are wound on the first yarn tubes. The rotating disk spins and winds the first fiber yarn on the core mold at a°, 0°<a°≤90°, and the fiber layer woven on the core mold by any first-angle braiding unit is a first fiber yarn layer;

[0010] A plurality of second-angle weaving units, wherein the fiber yarns weaved by the second-angle weaving units are second fiber yarns, and the plurality of second-angle weaving units all include a guide ring, wherein the axis of the guide ring coincides with the axis of the core mold, and the core mold extends from the axial position of the guide ring, and the guide ring is provided with a plurality of guide holes, wherein the guide holes pass through two opposite end faces of the guide ring, and the axial direction of the guide holes is parallel to the moving direction of the core mold, and the second fiber yarns pass through the guide holes and are laid on the core mold, and the second fiber yarns passing through the guide holes are laid on the surface of the core mold at 0°, and the fiber layers woven on the core mold by the second-angle weaving units are all 0° fiber yarn layers;

[0011] Several first fiber yarn layers and several 0° fiber yarn layers are all wound on the surface of the core mold to form a carbon fiber layer, and the outermost fiber yarn layer of the carbon fiber layer is a fiber yarn braided layer, which is not a 0° fiber yarn layer, so as to facilitate tightening the several first fiber yarn layers and several 0° fiber yarn layers that have been wound on the core mold.

[0012] As an optional solution, the first angle braiding unit further includes a yarn column;

[0013] The first yarn tube is sleeved on the yarn column, and the yarn column is arranged on one end surface of the rotating disk. The axis of the yarn column coincides with the axis of the first yarn tube, and the axis of the yarn column and the axis of the core mold are located in the same plane;

[0014] The angle between the length direction of the yarn column and the length direction of the core mold is b, and the angle between the length direction of the fiber yarn segment between the core mold and the yarn column and the length direction of the yarn column is c, a°+b°+c°=180°.

[0015] As an optional solution, the first angle weaving unit further includes a first yarn spreading ring;

[0016] The first yarn spreading ring is slidably mounted on the rotating disk, the sliding direction of the first yarn spreading ring is parallel to the axial direction of the core mold, and the first yarn spreading ring and the first yarn tube are located on the same side;

[0017] The fiber yarn segment between the core mold and the first yarn tube is the first yarn segment;

[0018] The first yarn spreading ring is displaced along the axis of the core mold and adjusts the angle between the first yarn segment and the axis of the core mold.

[0019] As an optional solution, the second angle braiding unit further includes a second yarn tube and a creel;

[0020] The creel upper array is provided with a second yarn tube;

[0021] The second fiber yarn on the second yarn tube passes through the guide hole and is laid on the core mold. The second fiber yarn on the second yarn tube is woven at 0° on the surface of the core mold.

[0022] As an optional solution, the plurality of guide holes are arranged in a circular array at equal angles to the axis of the guide ring;

[0023] Or the guide holes are arranged in a circular array with non-equiangular angles along the axis of the guide ring.

[0024] As an optional solution, the production line further includes a three-dimensional braiding machine;

[0025] The three-dimensional braiding machine braids the fiber yarns on the surface of the core mold, and the fiber yarn layer braided by the three-dimensional braiding machine is the second fiber yarn layer.

[0026] As an optional solution, the three-dimensional braiding machine braids the fiber yarns on the surface of the core mold at d°, where 15°≤d°≤85°.

[0027] As an optional solution, the number of the first angle braiding units and the second angle braiding units are both two, and the number of the three-dimensional braiding machine is one;

[0028] The first first-angle braiding unit, the first second-angle braiding unit, the second first-angle braiding unit, the second second-angle braiding unit and the three-dimensional braiding machine are sequentially arranged along the advancing direction of the core mold.

[0029] The present invention also provides a preparation process for braiding a carbon fiber tube for a multi-angle UAV, using the above-mentioned production line for braiding a carbon fiber tube for a multi-angle UAV, and the preparation process includes:

[0030] Core mold pulling step: the forward operating platform is started, and the forward operating platform drives the core mold to move forward along the axis direction of the core mold;

[0031] Laying the first 0° fiber yarn layer: when the core mold advances, the second yarn tube on the creel of the first second-angle weaving unit rotates and unwinds the second fiber yarn thereon, and the second fiber yarn on the first second-angle weaving unit passes through the guide hole and contacts the surface of the core mold;

[0032] Weaving the first fiber yarn layer: the mandrel advances under the pull of the advancing operating table, starting the rotation of the rotating disk of the first first-angle braiding unit, driving the first yarn tube thereon to rotate, thereby winding the first fiber yarn on the first yarn tube of the first first-angle braiding unit around the first 0° fiber yarn layer at an angle a, and binding the first 0° fiber yarn layer to the mandrel;

[0033] Laying the second 0° fiber yarn layer: when the core mold advances, the second yarn tube on the creel of the second second-angle weaving unit rotates and unwinds the second fiber yarn thereon, and the second fiber yarn on the second second-angle weaving unit passes through the guide hole and contacts the first first fiber yarn layer;

[0034] Weaving the second layer of the first fiber yarn: the mandrel advances under the pull of the forward operating table, starting the rotation of the rotating disk of the second first-angle braiding unit, driving the first yarn tube on it to rotate, thereby winding the first fiber yarn on the first yarn tube of the second first-angle braiding unit at an angle a around the second layer of 0° fiber yarn, and the second layer of 0° fiber yarn is also bound to the mandrel;

[0035] Weaving the second fiber yarn layer: the core mold moves forward under the pull of the forward operating table, and the three-dimensional weaving machine is started. The three-dimensional weaving machine weaves the fiber yarn on it onto the second layer of the first fiber yarn layer, and the second fiber yarn layer binds the second layer of the first fiber yarn layer to the core mold.

[0036] The present invention also provides a carbon fiber tube for a multi-angle UAV, which is prepared using the above-mentioned preparation process for a braided carbon fiber tube for a multi-angle UAV.

[0037] As described above, the production line for braiding multi-angle carbon fiber tubes for drones of the present invention has at least the following beneficial effects:

[0038] 1. The present application is provided with a first angle weaving unit for weaving the fiber yarn on the surface of the core mold at a first angle, and a second angle weaving unit for weaving the fiber yarn on the surface of the core mold at 0°. When the core mold is pulled by the forward operating table, the first angle weaving unit and the second angle weaving unit work together. The first fiber yarn layer woven by the first angle weaving unit can be fixed while being woven onto the surface of the core mold, and the 0° fiber yarn layer previously woven on the surface of the core mold can be arranged in any combination, so that the production line can use the pultrusion process to ensure production efficiency while ensuring that the physical properties of the fiber yarn layer can meet product requirements, thereby solving the problem of not being able to meet the high-automatic production requirements of carbon fiber drone tubes that meet the bending resistance and tensile resistance requirements.

[0039] 2. This application uses a yarn collecting ring to lay the fiber yarn on the surface of the core mold at 0°, and then uses a winding machine to wind the fiber yarn on the surface of the core mold at a certain angle while preventing the 0° fiber yarn layer from sliding. This simplifies the production equipment while allowing the weaving units for weaving 0° and the weaving units for weaving a° to be cyclically configured.

[0040] 3. In the present application, the fiber yarn is wound on the surface of the core mold by rotating the first yarn tube on the rotating disk. When the length direction of the first yarn tube is parallel to the length direction of the core mold, the first angle weaving unit can wind the fiber yarn on the surface of the core mold at 90°. The 90° fiber yarn layer can provide a circumferential extrusion layer for the woven carbon fiber tube for drones, which can share the extrusion force on the tube body while keeping the tube body from collapsing. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Shown is an overall schematic diagram of the present invention;

[0042] Figure 2 Shown is the second angle braiding unit of the present invention;

[0043] Figure 3 The second angle braiding unit of the present invention is shown in FIG. Figure 2 A partial enlarged view of point A in the middle;

[0044] Figure 4 Shown is the first angle braiding unit of the present invention;

[0045] Figure 5 The first angle braiding unit of the present invention is shown in FIG. Figure 4 A partial enlarged view of point B in the middle;

[0046] Figure 6 Shown is a schematic diagram of the yarn column braiding angle of the carbon fiber winding machine of the present invention;

[0047] Figure 7Schematic diagram showing the braiding angle of the first yarn spreading ring of the carbon fiber winding machine of the present invention;

[0048] Figure 8 Shown is a diagram illustrating a three-dimensional braiding machine according to the present invention;

[0049] Figure 9 Shown is the fiber layer of the carbon fiber tube woven according to the present invention;

[0050] Figure 10 Shown is the fiber layer of the carbon fiber tube woven in another angle arrangement according to the present invention.

[0051] In the picture:

[0052] 11. Core mold; 12. Advance operation table; 13. First fiber yarn; 14. Second fiber yarn;

[0053] 21. First angle braiding unit; 22. First yarn tube; 23. Yarn column; 24. Rotating disk; 25. Load-bearing bracket; 26. First yarn spreading ring;

[0054] 31. Guide ring; 32. Second yarn tube; 33. Creel; 34. Guide hole;

[0055] 41. Three-dimensional braiding machine; 42. Third fiber yarn;

[0056] 51. First fiber yarn layer; 52. 0° fiber yarn layer; 53. Second fiber yarn layer. DETAILED DESCRIPTION

[0057] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0058] See also Figures 1 to 10 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0059] The following embodiments are for illustration only and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0060] See also Figures 1 to 10 The present invention provides a production line for braiding carbon fiber tubes for multi-angle drones, the production line comprising:

[0061] A forward operating platform 12, the forward operating platform 12 includes a support frame and two grippers, the two grippers move back and forth on the support frame;

[0062] The core mold 11 is pulled by the forward operating table 12 and moves along the product manufacturing direction of the production line. The core mold 11 is driven to move by the two grippers. The two grippers are a first gripper and a second gripper along the forward direction of the core mold 11. The first gripper and the second gripper take turns gripping the core mold 11.

[0063] When the first gripper grips the core mold 11 and drives the core mold 11 forward, the second gripper releases the core mold 11 and moves in the opposite direction of the core mold 11's forward movement. When the second gripper grips the core mold 11 and drives the core mold 11 forward, the first gripper releases the core mold 11 and moves in the opposite direction of the core mold 11's forward movement. The first gripper and the second gripper continuously move back and forth to ensure the continuous advancement of the core mold 11.

[0064] The shape of the core mold 11 is not limited here and can be circular, elliptical, rectangular, square, etc.

[0065] In another embodiment of the forward operation platform 12 (not shown in the drawings of the specification), the forward operation platform 12 includes a support frame and two manipulators. The manipulators clamp one end of the core mold 11 and reciprocately drive the core mold 11 forward. The two manipulators are a first manipulator and a second manipulator along the forward direction of the core mold 11. The first manipulator and the second manipulator take turns clamping the core mold 11 and moving it forward.

[0066] A first angle braiding unit 21, wherein the fiber yarn braided by the first angle braiding unit 21 is the first fiber yarn 13, and the first angle braiding unit 21 comprises a rotating disk 24 and a first yarn tube 22, and the first angle braiding unit 21 is located in the forward direction of the core mold 11;

[0067] The rotating disk 24 is penetrated by a first through hole, and the first through hole is used to prevent the core mold 11 from extending from the axis position of the rotating disk 24;

[0068] The rotating disk 24 is capable of spinning, and the rotation axis of the rotating disk 24 is parallel to the axis of the core mold 11. A plurality of first yarn tubes 22 are provided on one end surface of the rotating disk 24. The rotating disk 24 is rotatably mounted on a load-bearing bracket 25.

[0069] The rotating motor is fixedly mounted on the load-bearing bracket 25. A gear is fixedly connected to the left end surface of the rotating disk 24. The gear is provided with a second through hole, which is coaxial with the first through hole. The gear is engaged with the rotating end of the rotating motor through a gear set. When the rotating motor is started, it drives the rotating disk 24 to rotate.

[0070] There are at least two first yarn tubes 22;

[0071] A plurality of the first yarn tubes 22 are arranged in a circular array along the axis of the first through hole;

[0072] The first yarn tube 22 follows the rotating disk 24 to make a circular motion when the rotating disk 24 rotates. The fiber yarn wound on the first yarn tube 22 is the first fiber yarn 13.

[0073] When the rotating disk 24 spins, the first yarn tube 22 rotates around the axis of the core mold 11. At this time, the first fiber yarn 13 will be wound around the outside of the core mold 11. The rotating disk 24 spins and winds the first fiber yarn 13 on the core mold 11 at a°.

[0074] 0°<a°≤90°, any fiber layer woven by the first angle weaving unit 21 on the core mold 11 is the first fiber yarn layer 51;

[0075] Taking a°=90° as an example, the length direction of the first yarn tube 22 is parallel to the length direction of the core mold 11, and the first angle weaving unit 21 winds the first fiber yarn 13 on the surface of the core mold 11 in a manner perpendicular to the surface of the core mold 11. Each time the rotating disk 24 rotates one circle, a layer of 90° fiber yarn can be weaved;

[0076] Since the moving speed of the gripper can be adjusted, the moving speed of the core mold 11 can also be adjusted;

[0077] The first fiber yarn layer 51 adjusts the size of a° by adjusting the rotation speed of the rotating disk 24 and the forward speed of the core mold 11;

[0078] The angle a° is the angle between the first fiber yarn 13 and the core mold 11, which is the angle away from the moving direction of the core mold 11.

[0079] When the forward speed of the core mold 11 remains unchanged, the faster the rotation speed of the rotating disk 24 is, the closer a° is to 90°, and the slower the rotation speed of the rotating disk 24 is, the closer a° is to 0°;

[0080] When the rotation speed of the rotating disk 24 remains unchanged, the faster the forward speed of the core mold 11 is, the closer a° is to 0°, and the slower the forward speed of the core mold 11 is, the closer a° is to 90°;

[0081] a second angle braiding unit, wherein the fiber yarn braided by the second angle braiding unit is the second fiber yarn 14, and the plurality of second angle braiding units each include a guide ring 31, wherein the center line of the guide ring 31 coincides with the axis of the core mold 11, and the core mold 11 extends from the axis position of the guide ring 31, and the guide ring 31 is provided with a plurality of guide holes 34, wherein the guide holes 34 pass through two opposite end surfaces of the guide ring 31, and the axial direction of the guide holes 34 is parallel to the moving direction of the core mold 11, and the plurality of guide holes 34 are arranged in a circular array on the guide ring 31 with the axis of the core mold 11 as the center;

[0082] The second fiber yarn 14 passes through the guide hole 34 and is laid on the core mold 11. The second fiber yarn 14 passing through the guide hole 34 is woven at 0° on the surface of the core mold 11. The fiber yarn layers woven on the core mold 11 by the second angle weaving unit are all 0° fiber yarn layers 52.

[0083] The guide holes 34 may be a circular array with equal angles to the axis of the guide ring 31. The guide holes 34 are evenly distributed on the guide ring 31. In this case, the thickness of the 0° fiber yarn layer 52 laid out by the guide ring 31 is uniform, and the bending resistance of the carbon fiber tube is the same at all locations.

[0084] Alternatively, the guide holes 34 are arranged in a circular array with non-uniform angles relative to the axis of the guide ring 31 , and the guide holes 34 are unevenly distributed on the guide ring 31 . In this case, when the guide holes 34 are densely arranged in a certain area, the local bending resistance of the area can be increased;

[0085] The shape of the inner wall of the guide ring 31 follows the shape of the core mold 11, the center line of the guide ring 31 coincides with the axis of the core mold 11, and the gap between the inner wall of the guide ring 31 and the outer wall of the core mold 11 is uniform;

[0086] The fiber yarn segment after the second fiber yarn 14 passes through the guide ring 31 is a ply yarn segment. When the core mold 11 moves forward, the ply yarn segment is laid on the surface of the core mold 11. The axis of the ply yarn segment and the axis of the core mold 11 are located in the same plane. At this time, the second fiber yarn 14 is laid on the surface of the core mold 11 at 0° by the second angle braiding unit, thereby completing the weaving of the 0° fiber yarn layer 52.

[0087] When the plurality of second fiber yarns 14 are parallel to the core mold 11, the second fiber yarns 14 cannot be well maintained on the surface of the core mold 11 at 0°. Therefore, a first angle weaving unit 21 can be provided after the second angle weaving unit. While the first fiber yarns 13 are wound on the surface of the core mold 11 at a°, the 0° fiber yarn layer 52 is fixed.

[0088] A plurality of first fiber yarn layers 51 and a plurality of 0° fiber yarn layers 52 are all wound on the surface of the mandrel 11 to form a carbon fiber layer, and the outermost fiber yarn layer of the carbon fiber layer is a fiber yarn braided layer. The fiber yarn braided layer is the outermost layer of all fiber layers. After the fiber yarns of this layer are woven on the surface of the mandrel 11, they can wrap all the fiber layers woven on the surface of the mandrel 11, thereby completing the weaving of the carbon fiber layer on the mandrel 11.

[0089] Since the length directions of the second fiber yarns 14 constituting the 0° fiber yarn layer 52 are parallel to the length direction of the core mold 11, it is difficult to play a fastening role. Therefore, the fiber yarn braided layer cannot be the 0° fiber yarn layer 52;

[0090] The arrangement of the plurality of first fiber yarn layers 51 and the plurality of 0° fiber yarn layers 52 is not limited herein, and from the inside to the outside, it can be the first fiber yarn layer 51, the 0° fiber yarn layer 52, the first fiber yarn layer 51, the 0° fiber yarn layer 52, the first fiber yarn layer 51, the 0° fiber yarn layer 52, ... the first fiber yarn layer 51;

[0091] Since the first fiber yarn layer 51 is woven by the first angle weaving unit 21, the 0° fiber yarn layer 52 is woven by the second angle weaving unit;

[0092] Here, the arrangement of the plurality of first angle braiding units 21 and the plurality of second angle braiding units along the axis direction of the core mold 11 can be first angle braiding unit 21, second angle braiding unit, second angle braiding unit, first angle braiding unit 21, second angle braiding unit, ... first angle braiding unit 21;

[0093] Or it is the second angle braiding unit, the first angle braiding unit 21, the second angle braiding unit, the first angle braiding unit 21...the first angle braiding unit 21;

[0094] It can also be the second angle braiding unit, the first angle braiding unit 21, the second angle braiding unit, the first angle braiding unit 21, the second angle braiding unit, ... the first angle braiding unit 21, etc.;

[0095] The angle of the fiber yarn woven by any of the first angle weaving units 21 may be different from the angle of the fiber yarn woven by other first angle weaving units 21;

[0096] The core mold 11 moves forward under the clamping of the forward operating table 12, and several first fiber yarns 13 on the first angle weaving unit 21 are wound on the surface of the core mold 11 to form a first fiber yarn layer 51, and the second fiber yarn 14 on the second angle weaving unit forms a 0° fiber yarn layer 52 on the surface of the core mold 11. Several of the first fiber yarn layers 51 and several 0° fiber yarn layers 52 are woven on the outside of the core mold 11 to form a carbon fiber layer. The carbon fiber tube with this carbon fiber layer effectively meets the demand for bending resistance in the field of drones, and solves the problem of not being able to produce carbon fiber drone tubes that meet the requirements of bending resistance and tensile resistance at the same time with high automation.

[0097] In this embodiment, please refer to Figures 1 to 10 , the first angle braiding unit 21 further includes a first yarn column 23;

[0098] The first yarn tube 22 is sleeved on the first yarn column 23, the axis of the first yarn column 23 coincides with the axis of the first yarn tube 22, and the axis of the first yarn column 23 and the axis of the core mold 11 are located in the same plane;

[0099] The number of the first yarn posts 23 matches the number of the first yarn tubes 22, and the first yarn posts 23 are parallel to the axis of the first yarn tubes 22;

[0100] The axis of the first yarn column 23 and the axis of the core mold 11 are located in the same plane;

[0101] The rotating disk 24 has a rotating groove formed thereon, and the rotating groove passes through one end surface of the rotating disk 24 ;

[0102] The first yarn column 23 is connected to the rotating groove through a rotating rod and is arranged on one end surface of the rotating disk 24. The first yarn column 23 is fixedly connected to the rotating rod. When the rotating rod rotates, the first yarn column 23 is driven to rotate.

[0103] The rotation axis of the first yarn column 23 is in the same straight line as the axis of the rotating rod, the rotation axis of the first yarn column 23 is perpendicular to the axis of the core mold 11, and the rotation axis of the first yarn column 23 and the axis of the core mold 11 are not in the same plane;

[0104] The rotational power of the first yarn column 23 can be provided by an auxiliary rotation motor, which is fixedly mounted on the rotating disk 24, and the power output end of the auxiliary rotation motor is fixedly connected to the rotating rod;

[0105] The included angle between the length direction of the first yarn column 23 and the length direction of the core mold 11 is b, and the included angle between the length direction of the fiber yarn segment between the core mold 11 and the first yarn column 23 and the length direction of the first yarn column 23 is c, where a°+b°+c°=180°;

[0106] When the first angle braiding unit 21 includes a plurality of first yarn columns 23, the plurality of first yarn columns 23 are arranged in a circular array with equal angles on the rotating disk 24 with the axis of the core mold 11 as the center;

[0107] Driven by the rotating disk 24 , the first yarn column 23 rotates around the core mold 11 with the axis of the core mold 11 as the center, thereby winding the first fiber yarn 13 on the core mold 11 at a°.

[0108] In this embodiment, please refer to Figures 1 to 10 , the second angle braiding unit also includes a first yarn spreading ring 26;

[0109] The first yarn spreading ring 26 is slidably mounted on the rotating disk 24. The sliding direction of the first yarn spreading ring 26 is parallel to the axial direction of the core mold 11. The first yarn spreading ring 26 and the first yarn column 23 are located on the same side.

[0110] A sliding groove is formed on the end surface of the rotating disk 24 close to the first yarn spreading ring 26;

[0111] A sliding rod is fixedly provided on the end surface of the first yarn spreading ring 26 close to the rotating disk 24. The sliding rod is slidably connected to the sliding groove. When the sliding rod slides, it drives the first yarn spreading ring 26 to move closer to or away from the rotating disk 24. The sliding power of the first yarn spreading ring 26 is provided by the telescopic rod.

[0112] The fiber yarn segment between the core mold 11 and the first yarn column 23 is the first yarn segment;

[0113] The first yarn spreading ring 26 moves forward along the axis of the core mold 11 and adjusts the angle between the first yarn segment and the axis of the core mold 11. When the first yarn spreading ring 26 moves forward along the axis of the core mold 11, the outer contour of the first yarn spreading ring 26 can drive the first fiber yarn 13 and the contact position between the first fiber yarn 13 and the first yarn spreading ring 26 to move together. Since the position where the first fiber yarn 13 is wound on the core mold 11 is relatively stationary with respect to the core mold 11, when the first yarn spreading ring 26 moves, the angle between the first fiber yarn 13 and the core mold 11 will change.

[0114] The point where the first fiber yarn 13 is wound around the core mold 11 driven by the rotating disk 24 is the first winding point;

[0115] When the first yarn spreading ring 26 is located between the first winding point and the rotating disk 24, under the condition that the forward speed of the core mold 11 and the rotation speed of the rotating disk 24 remain unchanged, the farther the first yarn spreading ring 26 is from the rotating disk 24, the closer a° is to 90°;

[0116] The present application adjusts the angle at which the first fiber yarn 13 is woven onto the core mold 11 by adjusting the distance between the first yarn spreading ring 26 and the rotating disk 24 , thereby enabling the present application to adjust the angle at which the first fiber yarn layer 51 is woven onto the core mold 11 in a variety of ways.

[0117] In this embodiment, please refer to Figures 1 to 10 , the second angle braiding unit includes a second yarn tube 32 and a creel 33;

[0118] The creel 33 is sleeved with a second yarn tube 32 , and the second fiber yarn 14 is wound around the second yarn tube 32 ;

[0119] The second fiber yarn 14 on the second yarn tube 32 passes through the guide hole 34 and is laid on the core mold 11. The second fiber yarn 14 on the second yarn tube 32 is woven on the surface of the core mold 11 at 0°.

[0120] One end of the second fiber yarn 14 is wound around the second yarn tube 32 , and the other end of the second fiber yarn 14 passes through the guide hole 34 and is laid on the core mold 11 .

[0121] In this embodiment, please refer to Figures 1 to 10 , the production line also includes a three-dimensional braiding machine 41;

[0122] The fiber yarn woven by the three-dimensional braiding machine 41 is the third fiber yarn 42;

[0123] The number of the three-dimensional braiding machines 41 can be two, one located at the head position of the core mold 11, and the other located at the tail position of the core mold 11;

[0124] The three-dimensional braiding machine 41 braids the third fiber yarn 42 on the surface of the core mold 11. The fiber yarn layer braided by the three-dimensional braiding machine 41 is the second fiber yarn layer 53.

[0125] When the second fiber yarn layer 53 is used as a yarn braided layer, it can also fasten a plurality of first fiber yarn layers 51 and a plurality of 0° fiber yarn layers 52 , thereby enhancing the stability of the carbon fiber tube.

[0126] In this embodiment, please refer to Figures 1 to 10 The three-dimensional braiding machine 41 weaves the fiber yarn on the three-dimensional braiding machine 41 on the surface of the core mold 11 at d°, where d is a second angle, 15°≤d°≤85°; the third fiber yarn 42 is weaved on the surface of the core mold 11 by the three-dimensional braiding machine 41.

[0127] In this embodiment, please refer to Figures 1 to 10 , the number of the first angle braiding units 21 and the second angle braiding units are both two, and the number of the three-dimensional braiding machine 41 is one;

[0128] The first first-angle braiding unit 21, the first second-angle braiding unit, the second first-angle braiding unit 21, the second second-angle braiding unit and the three-dimensional braiding machine 41 are sequentially arranged along the forward direction of the core mold 11;

[0129] In this embodiment, the arrangement of the two first-angle weaving units 21, the two second-angle weaving units, and the three-dimensional weaving machine 41 can also be that the first second-angle weaving unit, the first first-angle weaving unit 21, the second second-angle weaving unit, the second first-angle weaving unit 21, and the three-dimensional weaving machine 41 are arranged in sequence along the forward direction of the core mold 11;

[0130] No further restrictions are imposed on the arrangement of the first angle weaving unit 21, the second angle weaving unit and the three-dimensional weaving machine 41, as long as the two second angle weaving units are not arranged adjacent to each other and are not located at the end of the production line.

[0131] See also Figures 1 to 10 The present invention provides a preparation process for a braided carbon fiber tube for a multi-angle UAV, the preparation process comprising:

[0132] The core mold 11 pulling step: the forward operating platform 12 is started, and the forward operating platform 12 drives the core mold 11 to move forward along the axis direction of the core mold 11;

[0133] The first 0° fiber yarn layer 52 is laid: when the core mold 11 moves forward, the second yarn tube 32 on the creel 33 of the first second-angle weaving unit rotates and unwinds the second fiber yarn 14 thereon, and the second fiber yarn 14 on the first second-angle weaving unit passes through the guide hole 34 and contacts the surface of the core mold 11;

[0134] Weaving the first fiber yarn layer 51: The core mold 11 moves forward under the pull of the advancing operating table 12, starting the rotation of the rotating disk 24 of the first first-angle weaving unit 21, driving the first yarn tube 22 thereon to rotate, thereby winding the first fiber yarn 13 on the first yarn tube 22 of the first first-angle weaving unit 21 around the first 0° fiber yarn layer 52 at an angle a, and binding the first 0° fiber yarn layer 52 to the core mold 11;

[0135] The second 0° fiber yarn layer 52 is laid: when the core mold 11 moves forward, the second yarn tube 32 on the creel 33 of the second second-angle weaving unit rotates and unwinds the second fiber yarn 14 thereon, and the second fiber yarn 14 on the second second-angle weaving unit passes through the guide hole 34 and contacts the first first fiber yarn layer 51;

[0136] The second layer of the first fiber yarn layer 51 is braided: the core mold 11 is pulled forward by the forward operation table 12, and the rotating disk 24 of the second first-angle braiding unit 21 is started to spin, driving the first yarn tube 22 thereon to rotate, thereby winding the first fiber yarn 13 on the first yarn tube 22 of the second first-angle braiding unit 21 at an angle a around the second layer of 0° fiber yarn layer 52, and the second layer of 0° fiber yarn layer 52 is also bound to the core mold 11;

[0137] The second fiber yarn layer 53 is weaved: the core mold 11 moves forward under the pull of the forward operating table 12, and the three-dimensional weaving machine 41 is started. The three-dimensional weaving machine 41 weaves the third fiber yarn 42 on it onto the second layer of the first fiber yarn layer 51, and the second fiber yarn layer 53 binds the second layer of the first fiber yarn layer 51 to the core mold 11.

[0138] See also Figures 1 to 10 The present invention provides a multi-angle carbon fiber tube for UAVs, which is prepared by the above-mentioned preparation process of a braided multi-angle carbon fiber tube for UAVs. The carbon fiber tube prepared by this process adopts an alternating arrangement of 0° fiber yarn layers 52 and 90° fiber yarn layers. It has the characteristics of tensile resistance and can also withstand the resistance encountered by the UAV during flight, thus meeting the performance requirements of the carbon fiber tube when used in the UAV field.

[0139] In summary, in the present invention, when a production line for braiding multi-angle carbon fiber tubes for drones is needed, the forward operating table 12 drives the core mold 11 forward through the clamping hand, and the first angle braiding unit 21 in the first angle braiding unit 21 winds the fiber yarn on the surface of the core mold 11 through the rotating disk 24 and the first yarn tube 22, and the fiber yarn in the second angle braiding unit passes through the guide hole 34 on the guide ring 31 in the second angle braiding unit and is laid on the surface of the core mold 11 at 0°, and the first angle braiding unit 21 located behind any second angle braiding unit While winding the fiber yarn onto the surface of the core mold 11, the 0° fiber yarn can be further fixed to prevent it from sliding. At the end of the production line, the second fiber yarn layer 53 woven by the three-dimensional braiding machine 41 can wrap the first fiber yarn layer 51 and the 0° fiber yarn layer 52 inside to make the carbon fiber layer covering the surface of the core mold 11 more stable, avoiding the limitation of the braiding angle of the carbon fiber tube by the equipment on the production line in the pultrusion process, thereby solving the problem of not being able to ensure the production efficiency while making the braiding angle of the carbon fiber meet the application of the carbon fiber tube in the field of drones.

[0140] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A production line for braiding carbon fiber tubes for multi-angle drones, characterized in that: The production line includes: forward operating table; A core mold, the core mold is pulled by the advancing operation table and advances along the axis direction of the core mold; A plurality of first angle weaving units, wherein the fiber yarns weaved by the first angle weaving units are first fiber yarns, and the plurality of first angle weaving units all comprise a rotating disk and a first yarn tube, wherein the rotating disk is penetrated with a first through hole, wherein the first through hole is used to prevent the core mold from extending from the axis position of the rotating disk, and the rotating disk is capable of self-spinning, wherein the axis of rotation of the rotating disk is parallel to the axis of the core mold, and a plurality of first yarn tubes are arranged on an end surface of one end of the rotating disk, wherein the first yarn tubes are wound with first fiber yarns, and the rotating disk self-spins and winds the first fiber yarns on the core mold at a°, wherein 0°<a°≤90°, and the fiber layers woven on the core mold by any of the first angle weaving units are all first fiber yarn layers; A plurality of second angle weaving units, wherein the fiber yarns weaved by the second angle weaving units are second fiber yarns, and the plurality of second angle weaving units all comprise a guide ring, wherein the axis of the guide ring coincides with the axis of the core mold, and the core mold extends from the axis position of the guide ring, and the guide ring is provided with a plurality of guide holes, wherein the guide holes penetrate through two opposite end faces of the guide ring, and the axis direction of the guide holes is parallel to the moving direction of the core mold, and the second fiber yarns pass through the guide holes and are laid on the core mold, and the second fiber yarns passing through the guide holes are laid on the surface of the core mold at 0°, and the fiber layers woven by the second angle weaving units on the core mold are all 0° fiber yarn layers; A plurality of first fiber yarn layers and a plurality of 0° fiber yarn layers are all wound on the surface of the core mold to form a carbon fiber layer, and the outermost fiber yarn layer of the carbon fiber layer is a fiber yarn braided layer, and the fiber yarn braided layer is not a 0° fiber yarn layer, so as to facilitate fastening of the plurality of first fiber yarn layers and the plurality of 0° fiber yarn layers that have been wound on the core mold; The first angle braiding unit further includes a first yarn spreading ring; The first yarn spreading ring is slidably mounted on the rotating disk, the sliding direction of the first yarn spreading ring is parallel to the axial direction of the core mold, and the first yarn spreading ring and the first yarn tube are located on the same side; The fiber yarn segment between the core mold and the first yarn tube is a first yarn segment; The first yarn spreading ring is displaced along the axis direction of the core mold and adjusts the angle between the first yarn segment and the axis of the core mold; The plurality of guide holes are arranged in a non-equiangular circular array along the axis of the guide ring.

2. The production line for braiding carbon fiber tubes for multi-angle drones according to claim 1 is characterized in that: The first angle braiding unit also includes a yarn column; The yarn column is sleeved with the first yarn tube, the yarn column is arranged on one end surface of the rotating disk, the axis of the yarn column coincides with the axis of the first yarn tube, and the axis of the yarn column and the axis of the core mold are located in the same plane; The angle between the length direction of the yarn column and the length direction of the core mold is b, the angle between the length direction of the fiber yarn segment between the core mold and the yarn column and the length direction of the yarn column is c, a°+b°+c°=180°.

3. The production line for braiding carbon fiber tubes for multi-angle drones according to claim 1 is characterized in that: The second angle braiding unit also includes a second yarn tube and a creel; The creel upper array is sleeved with a second yarn tube; The second fiber yarn on the second yarn tube passes through the guide hole and is laid on the core mold, and the second fiber yarn on the second yarn tube is woven on the surface of the core mold at 0°.

4. The production line for braiding multi-angle carbon fiber tubes for drones according to claim 3 is characterized in that: The production line also includes a three-dimensional braiding machine; The three-dimensional braiding machine braids the fiber yarns on the surface of the core mold, and the fiber yarn layer braided by the three-dimensional braiding machine is the second fiber yarn layer.

5. The production line for braiding multi-angle carbon fiber tubes for drones according to claim 4, characterized in that: The three-dimensional braiding machine braids the fiber yarns on the three-dimensional braiding machine on the surface of the core mold at d°, 15°≤d°≤85°.

6. The production line for braiding multi-angle carbon fiber tubes for UAVs according to claim 4, characterized in that: The number of the first angle braiding units and the number of the second angle braiding units are both two, and the number of the three-dimensional braiding machine is one; A first first-angle braiding unit, a first second-angle braiding unit, a second first-angle braiding unit, a second second-angle braiding unit and the three-dimensional braiding machine are arranged in sequence along the advancing direction of the core mold.

7. A preparation process for a braided carbon fiber tube for a multi-angle UAV, using the production line for a braided carbon fiber tube for a multi-angle UAV according to claim 6, the preparation process comprising: The core mold pulling step: the forward operation platform is started, and the forward operation platform drives the core mold to move forward along the axis direction of the core mold; Laying the first 0° fiber yarn layer: when the core mold moves forward, the second yarn tube on the first second angle weaving unit creel rotates and unwinds the second fiber yarn thereon, and the second fiber yarn on the first second angle weaving unit passes through the guide hole and contacts the surface of the core mold; Weaving the first fiber yarn layer: the core mold moves forward under the pull of the advancing operation table, and the rotating disk of the first first angle weaving unit is started to spin, driving the first yarn tube thereon to rotate, so that the first fiber yarn on the first yarn tube of the first first angle weaving unit is wound around the first 0° fiber yarn layer at an angle a, and the first 0° fiber yarn layer is bound to the core mold; Laying the second 0° fiber yarn layer: when the core mold moves forward, the second yarn tube on the second second angle weaving unit creel rotates and unwinds the second fiber yarn thereon, and the second fiber yarn on the second second angle weaving unit passes through the guide hole and contacts the first first fiber yarn layer; Weaving the second first fiber yarn layer: the mandrel advances under the pull of the advancing operation table, starts the rotation of the rotating disk of the second first angle weaving unit, drives the first yarn tube thereon to rotate, thereby winding the first fiber yarn on the first yarn tube of the second first angle weaving unit at an angle a around the second 0° fiber yarn layer, and the second 0° fiber yarn layer is also bound to the mandrel; Weaving of the second fiber yarn layer: the core mold moves forward under the pull of the forward operating table, and the three-dimensional weaving machine is started. The three-dimensional weaving machine weaves the fiber yarn on it onto the second first fiber yarn layer, and the second fiber yarn layer binds the second first fiber yarn layer to the core mold.

8. A carbon fiber tube for multi-angle drone, characterized in that: The carbon fiber tube for a braided multi-angle drone is prepared by the preparation process of claim 7.

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