Fiber winding device

Abstract

A fiber winding device according to an embodiment can include a bobbin assembly in which a plurality of bobbins are disposed around a spiral wire in a circumferential direction to form a bobbin surface, a guide ring disposed in front of the center of the bobbin assembly obliquely to the bobbin surface, and a wire transfer unit that transfers the spiral wire to pass through the guide ring, the spiral wire being disposed to pass through the center of the guide ring at a right angle, the bobbin assembly being disposed obliquely on the spiral wire, fibers being wound from the plurality of bobbins along the guide ring to the spiral wire, and a plurality of the fiber winding devices being sequentially arranged along the spiral wire to sequentially and continuously wind a plurality of layers of fibers on one spiral wire.

Description

Technical Field

[0001] This invention discloses a fiber winding device. Background Technology

[0002] As research into lightweighting and optimization of parts becomes increasingly important, many industrial sectors are actively conducting research on replacing commonly used traditional steel parts with lightweight new materials.

[0003] Generally, steel coil springs are used in the landing gear of small aircraft or the suspension systems of automobiles. To reduce the weight of steel springs, technologies are being continuously developed to manufacture composite structures for coil springs using carbon fiber or glass fiber composites.

[0004] As mentioned above, when using lightweight materials to form composite structures, it is necessary to improve the structural performance more effectively and stably during the process of winding fiber bundles onto a cylindrical frame or inserting them into a mold.

[0005] In this regard, Korean Patent Publication No. 2021-0030330 discloses an apparatus and method for producing fiber webs, fibril aggregates or nonwoven fabrics, and the fiber webs, fibril aggregates or nonwoven fabrics produced therefrom.

[0006] The above background technology is content that the inventors have mastered or learned in the process of developing this invention, and should not be construed as necessarily being general known technology disclosed before applying for this invention. Summary of the Invention

[0007] Technical problems to be solved One embodiment aims to provide a fiber winding device for winding composite fibers around a helical wire.

[0008] One embodiment aims to provide a fiber winding device for improving the structural performance of spring composite material structures in terms of stiffness / strength.

[0009] One embodiment aims to provide a fiber winding device that is arranged in an inclined direction on a helical wire to further reduce space constraints.

[0010] Technical methods for solving problems According to one embodiment, a fiber winding apparatus may include: a winding bobbin assembly, wherein a plurality of bobbins are arranged circumferentially around a helical wire to form a winding bobbin surface; a guide ring disposed at the center of the winding bobbin assembly; and a wire conveying unit for conveying the helical wire through the guide ring, the helical wire being arranged to pass through the center of the guide ring at a right angle, the winding bobbin surface of the winding bobbin assembly being inclinedly disposed on the helical wire, and fibers being wound from the plurality of bobbins along the guide ring onto the helical wire.

[0011] According to one aspect, all of the plurality of spools move in one direction to wind fibers in one direction, or some of the spools move in the opposite direction to wind fibers in a weaving manner.

[0012] According to one aspect, the fiber winding apparatus according to one embodiment further includes a bobbin holder to which a tension adjusting unit for adjusting fiber tension is attached.

[0013] According to one aspect, multiple wire conveying units are arranged along the spiral wire.

[0014] According to one aspect, the wire conveying unit may include a first roller that provides conveying force to the spiral wire and a second roller that prevents the spiral wire from detaching, wherein the first roller is disposed on both sides of the spiral wire and the second roller is disposed on at least one of the inner or outer side of the spiral wire.

[0015] According to one aspect, the first roller may be conical, and the wider portion of the conical first roller is positioned toward the outside of the spiral wire.

[0016] According to one aspect, the fiber winding apparatus according to one embodiment may further include a wire conveying speed measuring unit; and a roller motor speed regulating unit for regulating the motor speed of the roller driving the wire conveying unit.

[0017] According to one aspect, the fiber winding apparatus according to one embodiment may further include a wire conveying speed measuring unit and a spool speed adjusting unit for adjusting the spool speed.

[0018] Composite material structures can be prepared using the fiber winding apparatus according to one embodiment described above.

[0019] Invention Effects According to one embodiment, the fiber winding apparatus can wind composite fiber onto a spiral wire in one direction or in a weaving direction.

[0020] According to one embodiment, the fiber winding device can maximize the structural performance of spring composite material structures in terms of stiffness / strength.

[0021] According to one embodiment, the fiber winding device can be arranged on the spiral wire in an inclined direction to further reduce space constraints.

[0022] The effects of the fiber winding device according to one embodiment are not limited to the effects described above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description. Attached Figure Description

[0023] Figure 1 This is a top view of a fiber winding apparatus according to an embodiment.

[0024] Figure 2 This is a front view of a fiber winding apparatus according to an embodiment.

[0025] Figure 3 This is a top view of the wire conveying unit of a fiber winding apparatus according to an embodiment.

[0026] Figure 4 This is a front view of the wire conveying unit of a fiber winding apparatus according to an embodiment.

[0027] Figure 5 The roller structure of the wire conveying unit of a fiber winding apparatus according to one embodiment is shown.

[0028] Figure 6 This is an embodiment of a fiber winding apparatus further equipped with a wire conveying speed measuring unit and a roller motor speed adjustment unit.

[0029] Figure 7 This is an embodiment of a fiber winding apparatus further comprising a wire conveying speed measuring unit and a spool speed adjusting unit.

[0030] Figure 8 This is an embodiment that includes multiple fiber winding devices according to one embodiment.

[0031] Explanation of reference numerals in the attached figures 10: Fiber winding device 100: Winding shaft assembly 110: Bollard 120: Winding axis surface 200: Guide ring 300: Wire conveying unit 310: First roller 320: Second roller 400: Wire conveying speed measurement unit 500: Roller motor speed regulation unit 600: Bollard speed adjustment unit W: Spiral wire F: Fiber Detailed Implementation The embodiments will now be described in detail with reference to the accompanying drawings. It should be understood that various modifications can be made to the embodiments, and the scope of this application is not limited to the embodiments described below. All modifications to the embodiments, their equivalents, and even their substitutes are within the scope of this invention.

[0032] The terminology used in the embodiments is for illustrative purposes only and is not intended to limit the scope. Unless otherwise specified in the content, a single modifier may have multiple meanings. In this specification, terms such as "comprising" or "having" are used to express the presence of the features, numbers, steps, operations, constituent elements, accessories, or combinations thereof described in the specification, and do not exclude the possibility of the presence or additional addition of one or more other features, numbers, steps, operations, constituent elements, accessories, or combinations thereof.

[0033] Unless otherwise defined, all terms used herein, including technical or scientific terms, shall have their ordinary meanings as understood by one of ordinary skill in the art. Terms commonly used, such as those defined in dictionaries, shall be understood as having their meanings in the relevant technical context and shall not be interpreted as idealized or overly formalized meanings unless explicitly defined in this specification.

[0034] Furthermore, in the description with reference to the accompanying drawings, the same reference numerals are used for the same constituent elements regardless of the drawing numbers, and repeated descriptions are omitted. In describing the embodiments, detailed descriptions of relevant well-known technologies are omitted when it is determined that such detailed descriptions would unnecessarily obscure the embodiments.

[0035] Furthermore, when describing the constituent elements of the embodiments, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish one constituent element from other constituent elements and are not used to limit the nature or order of the corresponding constituent elements. For example, a first constituent element may be referred to as a second constituent element, and similarly, a second constituent element may be referred to as a first constituent element. In addition, it should be understood that when the specification describes a constituent element as "connected," "joined," or "contacting" another constituent element, a third constituent element may be "connected," "joined," or "contacting" between the first and second constituent elements, even though the first constituent element may be directly connected, joined, or contacting the second constituent element.

[0036] When a constituent element has a common function with a constituent element of a certain embodiment, the same name is used in other embodiments for description. Unless otherwise stated, the description of one embodiment is applicable to other embodiments, and detailed descriptions of repeated content may be omitted.

[0037] In this invention, a "bobbin" is a cylindrical object with fibers wound around it. The "spool surface" refers to the surface formed by the bobbin.

[0038] Figure 1 This is a top view of a fiber winding apparatus 10 according to one embodiment. Figure 2 According to one embodiment, the fiber winding device 10 is along Figure 1The front view in the AA direction.

[0039] A fiber winding apparatus 10 according to one embodiment includes a winding spool assembly 100 and a guide ring 200 disposed at the center of the winding spool assembly 100. The winding spool assembly 100 has a plurality of spools 110 arranged circumferentially around the helical wire W to form a spool plane 120. Additionally, a fiber winding apparatus 10 according to another embodiment may include a wire conveying unit 300 for conveying the helical wire W through the guide ring 200. For this, refer to... Figure 3 and Figure 4 Detailed explanation.

[0040] In a typical fiber winding device, i.e. a braiding device, the guide ring is parallel to the winding shaft surface, while the object to be wound, the wire, etc., is arranged at a right angle to the guide ring and the winding shaft surface. In this state, the fiber extends outward, i.e., in a right-angle direction, according to the fiber winding speed.

[0041] In this invention, the winding shaft surface 120 of the fiber winding apparatus 10 according to one embodiment can be arranged in a direction inclined relative to the helical wire W with the guide ring 200 as the center. With the winding shaft surface 120 arranged on the helical wire W, the helical wire W can pass through the center of the guide ring 200 at a right angle. The plurality of spools 110 of the winding shaft assembly 100 can be arranged on the winding shaft surface 120 along the circumferential direction of the guide ring 200 with the guide ring 200 as the center. Since the winding shaft surface 120 of the fiber winding apparatus 10 according to one embodiment is arranged in an inclined direction on the helical wire W, the space restriction caused by adjacent wires can be avoided.

[0042] Reference Figure 2 As the fibers unwind from the plurality of spools 110 of the winding assembly 100, they can be wound along the guide ring 200 onto the helical wire W. The plurality of spools 110 can all move in one direction on the winding surface to wind the fibers in that direction, or some of the spools 110 can move in the opposite direction to wind the fibers in a braided manner. Figure 2 The diagram simply illustrates the number and rotation direction of the spools 110 wound with fibers, but the number of spools 110 in this invention is not limited, and may include a device for winding fibers in one direction or a device for twisting the spools 110 in different directions to braid the fibers into the object.

[0043] According to one embodiment, the fiber winding device 10 may further include a spool (not shown) to which a tension adjusting unit for adjusting fiber tension is attached.

[0044] In the bobbin assembly 100 of the fiber winding apparatus 10 according to one embodiment, since the bobbin surface 120 and the guide ring 200 are not parallel, the distance between the bobbin 110 and the wire changes periodically as the bobbin 110 rotates on the circumference of the bobbin surface 120. Therefore, a tension adjusting unit needs to be installed on the bobbin 110. That is, when a large amount of fiber is unwound from the bobbin 110 and then a small amount is unwound again, it may be necessary to install an elastic device such as a spring to pull the fiber toward the bobbin 110 to maintain a predetermined tension. For this purpose, a bobbin holder with a tension adjusting unit for adjusting fiber tension attached can be provided on the bobbin 110 side of the bobbin surface 120.

[0045] Figure 3 This is a top view of the wire conveying unit 300 of the fiber winding apparatus 10 according to one embodiment. Figure 4 This is a front view of the wire conveying unit 300 of a fiber winding apparatus according to an embodiment.

[0046] In order to spirally transport the spiral wire W, the fiber winding device 10 according to one embodiment may be provided with a separate wire transport unit 300 for transporting the spiral wire W through the guide ring 200.

[0047] Specifically, when fiber F is wound around helical wire W in one direction, a torque will act on helical wire W due to the tension between the spool 110 and fiber F. Therefore, in order to counteract this torque and spirally transmit helical wire W while maintaining the diameter of the circular coil, as follows: Figure 3 As shown, multiple wire conveying units 300 are required.

[0048] Figure 4 An embodiment is shown that uses four wire conveying units 300 to achieve the conveying function of the spiral wire W. Furthermore, when fibers are repeatedly wound around the wire, such as... Figure 3 As shown, multiple wire conveying units 300 need to be installed sequentially. At this time, Figure 4 The two wire conveying units 300 in the lower middle section can be used in combination with the wire conveying units 300 in the adjacent group.

[0049] The wire conveying unit 300 needs to be fixed in a suitable position in space so as not to restrict the rotation of the winding spool surface 120 and the fiber, as well as the helical movement of the helical wire W.

[0050] The wire conveying unit 300 must convey the wire by driving the first roller 310 and the second roller 320, and Figure 5 An embodiment of the roller structure of the wire conveying unit 300 of the fiber winding apparatus 10 according to one embodiment is shown.

[0051] exist Figure 5In (a), the wire conveying unit 300 includes a first roller 310 that provides conveying force to the spiral wire W and a second roller 320 that prevents the spiral wire W from detaching. Considering the circular shape of the coiled spiral wire W, the first roller 310 can be formed as a cone with a diameter that gradually increases towards the outer edge of the coil radius. That is, the wide diameter portion of the conical first roller 310 can face outwards from the spiral wire W. The first rollers 310 can be arranged on both sides of the spiral wire W with their rotation axes parallel to each other. The second roller 320 can be arranged inside the coiled spiral wire W.

[0052] Figure 5 (b) is a conceptual diagram of another example of the roller structure of the wire conveying unit 300. In this example, the second roller 320 may be disposed on the outside of the coiled helical wire W, and the first roller 310 is disposed on both sides of the helical wire W in a direction that opens outward toward the radius of the helical wire W. Figure 5 Unlike (a), the rotation axes of the first rollers 310 on both sides are not parallel, so the manufacturing process is more complicated, but it has the advantage of avoiding the installation space inside the coil radius being too narrow.

[0053] According to one embodiment, the fiber winding device 10 may further include a motor for driving the rollers, which may be disposed on the side of the first roller 310 or the second roller 320.

[0054] Figure 6 According to one embodiment, the fiber winding apparatus 10 is further provided with a roller motor speed adjustment unit 500, which is used to adjust the motor speed of the first roller 310 and the second roller 320 driving the wire conveying speed measuring unit 400 and the wire conveying unit 300.

[0055] Since the wire conveying unit 300 conveys the spiral wire W through the friction between the first roller 310 and the second roller 320 and the spiral wire W, unlike conveying methods using gears or chains, the conveying speed of the spiral wire W will be affected by the increase or decrease of friction. Therefore, in order to accurately maintain the conveying speed of the spiral wire W, a separate wire conveying speed measuring unit 400 is required. Furthermore, a separate roller motor speed regulating unit 500 can be provided to increase or decrease the rotational speed of the first roller 310 and the second roller 320 based on the measurement values ​​from this wire conveying speed measuring unit 400.

[0056] In order to wind fibers onto the spiral thread W at a precise angle using the thread conveying speed measuring unit 400 and the roller motor speed adjustment unit 500, a precise proportional relationship needs to be maintained between the rotational speed of the spool 110 and the conveying speed of the spiral thread W. When the rotational speed of the spool 110 remains constant, the conveying speed of the spiral thread W can be controlled by using the value calculated from the rotational speed of the spool 110, thus allowing the fibers to be wound onto the spiral thread W at a precise angle.

[0057] Figure 7 This is an embodiment of a fiber winding apparatus further provided with a spool speed adjustment unit 600, wherein the spool speed adjustment unit 600 is used to adjust the speed of the wire conveying speed measuring unit 400 and the spool 110.

[0058] Figure 7 Another method for winding fibers onto a helical wire W at a precise angle is shown. Specifically, a method for measuring the conveying speed of the helical wire W and adjusting the rotational speed of the spool 110 accordingly is shown. Even if the conveying speed of the helical wire W deviates from the desired value, the spool rotational speed adjustment unit 600 can adjust the rotational speed of the spool 110 based on the conveying speed of the helical wire W measured by the wire conveying speed measuring unit 400, thereby enabling the fibers to be wound onto the helical wire W at a precise angle.

[0059] Not limited to the above embodiments, the wire conveying speed measuring unit 400, the roller motor speed regulating unit 500, and the spool speed regulating unit 600 can be used simultaneously. In this case, the speed at which the fiber is wound onto the spiral wire W can be adjusted while ensuring the fiber is wound onto the spiral wire W at a precise angle. That is, when it is desirable to maximize the fiber winding speed while maintaining the desired quality such as the accuracy of the fiber winding angle, the optimal production speed can be determined by simultaneously utilizing the wire conveying speed measuring unit 400, the roller motor speed regulating unit 500, and the spool speed regulating unit 600, by confirming the relationship between work efficiency and quality.

[0060] Figure 8 An embodiment is shown with multiple fiber winding devices according to one embodiment installed. Specifically, a top view is shown of an embodiment in which multiple layers of fibers are sequentially and continuously wound on a helical wire W by installing multiple fiber winding devices 10 according to one embodiment.

[0061] The components of a fiber winding apparatus 10 according to one embodiment will be described in detail below, and a method of operation for manufacturing a helical spring composite material structure by winding fibers on a helical wire W will be described in detail below.

[0062] According to one embodiment, the fiber winding device 10 can be disposed on the spiral wire W for winding the fiber F, and the winding shaft assembly 100 can be disposed obliquely on the spiral wire W in a diagonal direction. At this time, the guide ring 200 is disposed at the center of the winding shaft assembly 100, and the spiral wire W can pass through the guide ring 200 at a right angle.

[0063] Fibers can be unwound from a plurality of spools 110 arranged circumferentially on a winding surface 120 around a guide ring 200 and wound onto a helical wire W via the guide ring 200. At this time, all of the plurality of spools 110 on the winding surface 120 can move in one direction to wind the fiber in one direction, or the spools 110 can move in opposite directions to wind the fiber in a braided manner.

[0064] The wire conveying unit 300 can provide conveying force to the spiral wire W through the first rollers 310 disposed on both sides of the spiral wire W, and prevent the spiral wire W from detaching through the second rollers 320 disposed on the inner or outer side of the spiral wire W.

[0065] According to one embodiment, the fiber winding apparatus 10 can measure the conveying speed of the spiral thread W using a thread conveying speed measuring unit 400; and can wind the fiber F onto the spiral thread W at a precise angle using a roller motor speed regulating unit 500 or a spool speed regulating unit 600. The roller motor speed regulating unit 500 can adjust the motor speed driving the first roller 310 and the second roller 320 based on the measured conveying speed of the spiral thread W, and the spool speed regulating unit 600 can wind the fiber onto the spiral thread W at a precise angle by adjusting the speed of the spool 110.

[0066] According to one embodiment, the fiber winding device 10 can provide a helical spring composite material structure made by winding carbon fiber, composite fiber, etc., onto a helical wire W.

[0067] According to one embodiment, the winding shaft surface and guide ring 200 of the fiber winding device 10 are not parallel and are arranged at an angle on the spiral wire W, thereby avoiding space constraints caused by adjacent wires.

[0068] According to one embodiment, the fiber winding device 10 can pull the object to the outside according to the speed of the fiber winding object.

[0069] According to one embodiment, the fiber winding device 10 can prevent the fiber direction from being twisted or the fibers from being formed in a bent state instead of unfolded normally during the process of winding the twisted fiber bundles to the cylindrical frame or inserting them into the mold in the conventional composite material helical spring manufacturing method, which would result in the structural performance of the composite material structure after molding being lower than the design value, such as stiffness or strength.

[0070] According to one embodiment, the fiber winding apparatus 10, when manufacturing a composite material helical spring, directly winds fibers onto a helical wire corresponding to the inner core when viewed from the cross-section of the spring, i.e., a wire, and then directly immerses the spring in resin for molding. This ensures that the fiber orientation remains the same after molding as when the fiber was initially wound onto the wire. Furthermore, it prevents the fibers from bending during molding, and the resulting spring achieves the designed structural properties such as stiffness and strength.

[0071] While this disclosure includes specific examples, it will be apparent to those skilled in the art that various changes in form and detail may be made in these examples without departing from the spirit and scope of the claims and their equivalents. Suitable results may also be obtained if the described techniques are performed in a different order, and / or if the constituent elements of the described system, architecture, apparatus, or circuit are combined or arranged in different forms, or substituted by other constituent elements or equivalents.

[0072] Therefore, the scope of this invention is not defined by the specific contents of the specification, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be interpreted as included in this disclosure.

Claims

1. A fiber winding device, characterized in that, include: A bobbin assembly in which multiple bobbins are arranged circumferentially around a spiral wire to form a bobbin surface; A guide ring, inclined to the surface of the winding shaft, is disposed at the center of the winding shaft assembly; and The wire conveying unit conveys the spiral wire through the guide ring. The spiral wire is arranged to pass through the center of the guide ring at a right angle, and the winding shaft surface of the winding shaft assembly is inclined on the spiral wire. Fibers are wound from the plurality of spools along the guide ring onto the spiral wire.

2. The fiber winding device according to claim 1, characterized in that, The plurality of spools may all move in one direction to wind the fibers in one direction, or some of the spools may move in the opposite direction to wind the fibers in a weaving manner.

3. The fiber winding device according to claim 1, characterized in that, It also includes a bobbin holder, to which a tension adjustment unit for adjusting fiber tension is attached.

4. The fiber winding device according to claim 1, characterized in that, Multiple wire conveying units are arranged along the spiral wire.

5. The fiber winding device according to claim 1, characterized in that, The wire conveying unit includes a first roller that provides conveying force to the spiral wire and a second roller that prevents the spiral wire from detaching. The first roller is disposed on both sides of the spiral wire, and the second roller is disposed on at least one of the inner or outer sides of the spiral wire.

6. The fiber winding device according to claim 5, characterized in that, The first roller is conical, and the wider portion of the conical first roller is oriented toward the outside of the spiral wire.

7. The fiber winding device according to claim 1, characterized in that, Also includes: Wire conveying speed measurement unit; as well as The roller motor speed adjustment unit adjusts the motor speed of the roller that drives the wire conveying unit.

8. The fiber winding device according to claim 1, characterized in that, Also includes: Wire conveying speed measurement unit; as well as The spool speed adjustment unit adjusts the spool speed.

9. A fiber winding system, characterized in that, Includes the fiber winding device according to any one of claims 1 to 8, Multiple fiber winding devices are provided and arranged sequentially along the spiral wire.

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