Winding device and winding method for reinforcing fiber bundles

Abstract

A kind of winding device of reinforcing fiber bundle, it has: unwinding part, it has bobbin or reel, to the reinforcing fiber bundle wound on bobbin or reel to apply tensile stress to supply reinforcing fiber bundle;Multiple components, which constitute a path for transporting reinforcing fiber bundle;And winding part, it has core material and supports core material and makes the mechanism of core material rotates around its axis to wind reinforcing fiber bundle on outer periphery, when the path is set as wire channel, the multiple components are set as wire channel constituting equipment part, the component in wire channel constituting equipment part, on wire channel, the component in the position closest to core material is roller, when the roller is set as F roller, F roller is connected with rotating resistance applying unit, and the distance on wire channel from F roller to core material is 10 mm or less.A kind of winding device and winding method can supply reinforcing fiber bundle pre-wound on bobbin or reel and wind reinforcing fiber bundle on core material in the state that higher process tension is applied to reinforcing fiber bundle.

Description

Technical Field

[0001] The present invention relates to a winding apparatus for winding a reinforcing fiber bundle onto a core material while a process tension is applied to the reinforcing fiber bundle, and a winding method using the apparatus. Background Technology

[0002] In recent years, in order to improve motor performance, higher motor speeds have been required. For this type of motor, examples include the SPM (Surface Permanent Magnet) type, which has permanent magnets arranged on the outer periphery of the rotor, and the IPM (Internal Permanent Magnet) type, which has permanent magnets embedded in the rotor. However, when the motor rotates at high speed, there is a possibility that the permanent magnets arranged on the outer periphery may fall off the rotor due to centrifugal force, or the rotor itself may be damaged.

[0003] In order to suppress deformation and / or breakage associated with the high-speed rotation of the motor, Patent Document 1 discloses a method in which tension is applied in advance when the outer periphery of the rotor of the rotating machine (equivalent to the motor in this disclosure) is tightly wound with reinforcing wire.

[0004] Furthermore, Patent Document 2 discloses an apparatus in which, during the conveying of a tow prepreg (a bundle of reinforcing fibers containing resin), when unwinding from a bobbin on which the tow prepreg is wound, the tension applied to the tow prepreg in the process is controlled to gradually increase from the upstream side to the downstream side in order to suppress the interlocking of reinforcing fibers overlapping in the thickness direction in the tow prepreg wound on the bobbin. Specifically, an example is shown where the tension applied to the tow prepreg at the downstream conveying roller is 5 times the tension applied to the tow prepreg at the upstream conveying roller, and 1.5 kgf (approximately 15 N) is shown as the maximum tension.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 60-102850

[0008] Patent Document 2: Japanese Patent Application Publication No. 2021-151770 Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] However, the invention described in Patent Document 1 does not mention the specific tension value or method for pre-applying tension when tightly winding the carbon fiber around the outer circumference of the rotor. Therefore, even referring to this document, it is impossible to achieve the required tension setting, and as a result, the problem of limited motor speed cannot be solved.

[0011] Furthermore, in the invention described in Patent Document 2, if the suppression of deformation and / or breakage of the motor associated with high-speed rotation is taken into account, the tension applied to the material is still insufficient, and the problem of the motor speed being limited cannot be solved.

[0012] In view of this situation, the issues addressed in this disclosure are as follows.

[0013] That is, an apparatus and method are provided that can supply reinforcing fiber bundles pre-wound to a bobbin or reel and wind the reinforcing fiber bundles to a core material while applying a high process tension to the reinforcing fiber bundles.

[0014] Methods for solving problems

[0015] This disclosure can be implemented in the following ways.

[0016] (1) According to one aspect of the present disclosure, a winding apparatus is provided, comprising: an unwinding section having a bobbin or spool for supplying a reinforcing fiber bundle by applying tensile stress to a reinforcing fiber bundle wound on the bobbin or spool; a plurality of components (hereinafter referred to as a filament path forming device section) forming a path (hereinafter referred to as a filament path) for conveying the reinforcing fiber bundle; and a winding section having a core material and a mechanism for supporting the core material and rotating the core material about its axis to wind the reinforcing fiber bundle around its outer periphery.

[0017] The component in the yarn path forming equipment that is closest to the core material on the yarn path is a roller (hereinafter referred to as F roller). The F roller is connected to the rotational resistance application unit, and the distance from the F roller to the core material on the yarn path is 10 mm or less.

[0018] In this disclosure, it is assumed that the core material and the F-roll have the same or substantially the same axial direction.

[0019] In this design, the conveying tension applied to the reinforcing fiber bundle during winding around the core material can be significantly increased compared to the tensile stress applied to the reinforcing fiber bundle at the unwinding section. Furthermore, by connecting the F-roller to the rotational resistance application unit and ensuring that the distance from the F-roller to the core material on the yarn path is less than 10 mm, the length of the reinforcing fiber bundle existing between the F-roller and the core material can be shortened. As a result, the core material can be wound under a stable, high tension.

[0020] (2) In the winding device of the above manner, it can be configured such that the F roller and the core material are close to each other and can be moved to a positional relationship where they are pressed together by the traveling reinforcing fiber bundles.

[0021] (3) In the winding device of the manner described in (2) above, it is possible to provide a contact force adjustment mechanism that adjusts the force (contact force) by which the F roller and the core material press against each other through the reinforcing fiber bundle.

[0022] By designing the system in this way, the contact force between the F-rollers and the core material can be maintained at a desired value regardless of their weight or the outer diameter of the core material. Furthermore, the out-of-plane load generated by the reinforcing fiber bundles in the area where the F-rollers and the core material press against each other can be maintained and adjusted to a desired value. As a result, excessive compressive stress on the reinforcing fiber bundles in this area can be suppressed, thus preventing fiber breakage and allowing the reinforcing fiber bundles to be wound around the core material under high conveying tension.

[0023] (4) In the winding device of the manner described in (2) or (3) above, the following configuration can be provided: the yarn path forming equipment section includes rollers other than the F roller, the roller located immediately upstream of the F roller on the path of the reinforcing fiber bundle is designated as the sF roller, when the core material is viewed from the cross-sectional direction, the line segment A that geometrically connects the axis of the core material with the axis of the F roller is orthogonal to the line segment B on the yarn path from the sF roller to the F roller, and the configuration is such that the length of the area in the yarn path where the F roller contacts the reinforcing fiber bundle is within 1 / 2 of the outer perimeter of the F roller and within 5% above and below.

[0024] Here, there are typically no components constituting the yarn path forming device between the SF roller and the F roller. By designing it this way, it is possible to ensure the contact area between the F roller and the reinforcing fiber bundle while ensuring that the direction of the force exerted on the F roller due to the conveying tension of the reinforcing fiber bundle is orthogonal to the direction of the force exerted by the F roller and the core material pressing against each other. As a result, even if the conveying tension of the reinforcing fiber bundle changes, the force exerted by the F roller and the core material pressing against each other is not affected; that is, the load in the fiber bundle thickness direction generated by the reinforcing fiber bundle in the area where the F roller and the core material press against each other can be controlled more easily.

[0025] (5) In any of the winding devices described in (1) to (4) above, the following configuration can be provided: the winding section has a mechanism for reciprocating the core material in the axial direction, and the F roller reciprocates in parallel with the reciprocating motion of the core material.

[0026] By adopting such a scheme, the relative speed between the core material and the F-roller can be suppressed. As a result, even when the core material is wound around the entire periphery of the reinforcing fiber bundle with the purpose of reciprocating along the rotation axis, the so-called reciprocating traverse motion of the core material is performed with the aim of winding the reinforcing fiber bundle around the entire periphery of the core material which is larger in the rotation axis direction than in the width direction, forces other than tensile stress in the reinforcing fiber bundle can be suppressed, and fiber breakage can be suppressed and / or the travel path of the reinforcing fiber bundle can be stabilized.

[0027] (6) In addition, according to other aspects of the present disclosure, a method for winding a reinforcing fiber bundle is provided, wherein a tensile stress is applied to the reinforcing fiber bundle stored in a bobbin or spool to pull out the reinforcing fiber bundle, the reinforcing fiber bundle is conveyed along the filament path by a filament path forming device and then wound on a core material, thereby increasing the tensile stress generated in the reinforcing fiber bundle by applying rotational resistance to the F roller, and making the distance from the F roller to the core material on the filament path less than 10 mm.

[0028] (7) In the above-mentioned method of winding the reinforcing fiber bundle, the following scheme can be adopted: when the core material is viewed from the cross-sectional direction, the reinforcing fiber bundle passes through the line segment A that geometrically connects the axis of the core material and the axis of the F roller, and the F roller and the core material press against each other through the traveling reinforcing fiber bundle.

[0029] (8) In the winding method of reinforcing fiber bundle in the manner described in (7) above, it is possible to set the following configuration: the direction of the force generated by the F roller due to the tensile stress Tf and / or Tf1 generated in the reinforcing fiber bundle is orthogonal to the direction of the force generated by the F roller due to the mutual pressing of the F roller and the core material through the traveling reinforcing fiber bundle.

[0030] (9) In the winding method of reinforcing fiber bundle in the manner of (7) or (8) above, it is possible to set the core material to rotate about its axis and to make the core material and F roller reciprocate in a manner that does not produce a relative speed in the direction of the rotation axis of the core material.

[0031] (10) In any of the winding devices described in (1) to (6) above, the following configuration can be provided: the end members are provided on the outer peripheral surface of the core material or at both ends in the direction of the rotation axis, the end members protrude radially beyond the outer radial side of the core material and are supported independently in a manner that is not linked to the rotation of the core material, the end members have a shape with a portion missing from the outer peripheral surface, the missing portion does not protrude radially beyond the outer radial side of the core material, and does not overlap with the F roller when viewed from the axial direction of the core material.

[0032] (11) In the winding device of the manner described in (10) above, it is possible to set the winding section to have a mechanism for reciprocating the core material relative to the F roller along its rotation axis direction, and the end member is supported in a manner that is linked to the reciprocating motion in the rotation axis direction of the core material.

[0033] (12) In the winding device of the manner described in (10) or (11) above, it is possible to configure the end member to have a mechanism for fastening it to the core material.

[0034] (13) In any of the winding devices described in (10) to (12) above, the following configuration can be provided: a completion member is provided to complete the missing portion of the end member and can be attached and detached relative to the core material or the end member. The completion member protrudes radially beyond the outer radial side of the core material and covers the entire outer periphery of the core material to complete the portion of the missing portion of the end member that does not protrude radially beyond the outer radial side of the core material.

[0035] (14) In the winding method of reinforcing fiber bundle in the manner described in (7) to (9) above, the following scheme can be adopted: end members are respectively provided at both ends of the area where the reinforcing fiber bundle is wound into the core material. The end members protrude radially beyond the outer radial side of the core material and are supported independently in a manner that is not linked to the rotation of the core material. The end members have a shape with a part missing from the outer peripheral surface. At the missing part, they do not protrude radially beyond the outer radial side of the core material and do not overlap with the F roller when viewed from the axial direction of the core material.

[0036] (15) In the winding method of (14) above, the following scheme can be set: the winding part reciprocates in the direction of the rotation axis of the core material, and the end member reciprocates in conjunction with the core material.

[0037] (16) In addition, a method for strengthening the core material is provided, wherein after performing the winding method of the manner described in (15) above, the end member described in (14) above is fastened to the core material.

[0038] (17) In the core material strengthening method of the above (16) method, the following scheme can be adopted: after implementing the winding method of the above (15), a supplementary member for the missing part of the end member is installed on the core material or the end member, and the supplementary member is used to supplement the part of the missing part of the end member that does not protrude radially beyond the outer side of the core material throughout the entire outer periphery of the core material.

[0039] (18) In the winding method of reinforcing fiber bundles in the manner described in (7) to (9) above, the following scheme can be adopted: the core material is rotated about its axis, and the core material and the F roller reciprocate at a relative speed in the direction of the rotation axis of the core material, and on the outer peripheral surface of the core material, a region where the reinforcing fiber bundle is not wound is provided on both sides of the region where the reinforcing fiber bundle is wound, and the width of the surface of the F roller that contacts the reinforcing fiber bundle is larger than the width of the reinforcing fiber bundle and less than 1.5 times it.

[0040] Invention Effects

[0041] According to the present invention, an apparatus and method are provided that can supply reinforcing fiber bundles pre-wound to a bobbin or spool and wind the reinforcing fiber bundles to a core material while applying a high process tension to the reinforcing fiber bundles. Attached Figure Description

[0042] Figure 1 This is the winding device 100 in this embodiment.

[0043] Figure 2 This is a schematic diagram showing the state of conveying the reinforcing fiber bundle 01 between guide roller 71 and guide roller 72.

[0044] Figure 3 The winding device 101 is a different embodiment from the winding device 100.

[0045] Figure 4 The winding device 102 is a different embodiment from the winding devices 100 and 101.

[0046] Figure 5 It is the yarn path near the F roller 54 in the winding device 102.

[0047] Figure 6 The winding device 103 is a different embodiment from the winding devices 100, 101 and 102.

[0048] Figure 7 It is the shape of the cross section of core material 03 that is orthogonal to the axis of rotation.

[0049] Figure 8 This is a flowchart illustrating a method for manufacturing fiber composite materials.

[0050] Figure 9 The winding device 104 is a different embodiment from the winding devices 100, 101, 102 and 103.

[0051] Figure 10 This is a schematic diagram of the core material 03 and its surrounding components when viewed from the direction of the rotation axis.

[0052] Figure 11 It is a winding device 105 that is different from winding devices 100, 101, 102, 103 and 104.

[0053] Figure 12 This is a view of the winding section 6 and F roller 54 in the winding device 105 from the top surface. Detailed Implementation

[0054] Hereinafter, for ease of understanding, the present invention will be described with reference to the accompanying drawings, but the present invention is in no way limited by these drawings. Furthermore, the description of the specific embodiments shown in the drawings can also be understood as a description of the present invention as a broader concept.

[0055] A1. Composition and function of the winding device:

[0056] Figure 1 This refers to the winding device 100 in this embodiment. Furthermore, the figures accompanying this specification do not accurately reflect the dimensions of the winding device or the reinforcing fiber bundle. The winding device 100 is an apparatus that pulls the reinforcing fiber bundle 01 from a bobbin 02 on which it is wound, conveys it, and then winds the reinforcing fiber bundle 01 onto the core material 03.

[0057] In this specification, the reinforcing fiber bundle 01 is a fiber bundle containing reinforcing fibers that are substantially continuous along their length. Here, "substantially continuous" means that when observing a reinforcing fiber bundle of a certain length, the average length of each reinforcing fiber filament constituting the reinforcing fiber bundle is more than 90% of the length of the reinforcing fiber bundle. The reinforcing fiber bundle may also have a so-called "broken filament defect" in which some reinforcing fiber filaments are shorter than the length of the reinforcing fiber bundle, and may also have a so-called "loose filament defect" in which some reinforcing fiber filaments are longer than the length of the reinforcing fiber bundle.

[0058] The winding device 100 includes, in sequence along the travel path of the reinforcing fiber bundle 01 in the device, an unwinding section 4, a fiber path forming device 5, a winding section 6, and a control device (not shown).

[0059] More specifically, the winding device 100 includes: a bobbin 02 on which a reinforcing fiber bundle 01 is wound; an unwinding section 4 having a bobbin holder 41 for supporting the bobbin 02, a tension control mechanism 42 connected to the bobbin holder 41 and controlling the conveying tension when the reinforcing fiber bundle 01 is pulled out of the bobbin 02, and a plurality of guide rollers 421 supported for rotational movement; a yarn path forming device section 5 having a plurality of tension applying rollers 51, a plurality of rotational resistance applying units 52 respectively connected to the tension applying rollers 51, an F-roller 54, and a rotational resistance applying unit 53 connected to the F-roller 54; a cylindrical core material 03; and a winding section 6 having a support mechanism 61 supporting the core material 03 and a rotational drive mechanism 62 connected to one end of the support mechanism 61. Furthermore, the F-roller 54 can also be considered a type of tension applying roller 51.

[0060] Furthermore, in this specification, the reference numerals in the drawings indicating the constituent elements, where each digit is a multi-digit designation, indicate that the lower digit is an element constituting the device, mechanism, device section, or device group represented by the upper digit. For example, the support mechanism 61, the rotary drive mechanism 62, and the translation drive mechanism 63 are both elements constituting the take-up section 6, which is designated by its tens digit. Similarly, the translation motor 631 and the linear motion guide 632 are elements constituting the take-up section 6, which is designated by its hundreds digit, and are also elements constituting the translation drive mechanism 63, which is designated by both hundreds and tens digits. In other words, the take-up section 6 is a device group composed of multiple elements designated by 6 as the uppermost digit, and the unwind section 4 and the feeder forming device section 5 are understood in the same way.

[0061] The unwinding unit 4, with the bobbin 02 on which the reinforcing fiber bundle 01 is wound, supported by the bobbin holder 41 and with a certain conveying tension applied to the reinforcing fiber bundle 01 by the tension control mechanism 42, pulls the reinforcing fiber bundle 01 toward the winding unit 6. More specifically, the bobbin holder 41 is a rod-shaped member having a support portion that supports the bobbin 02 from the inner diameter side of the hole provided in the bobbin 02 and fixes the axial position of the bobbin 02. An unwinding motor (not shown) is connected to one end of the bobbin holder 41. The unwinding motor receives signals from the tension control mechanism 42 and a control unit (not shown) to rotate the bobbin holder 41 in the direction in which the reinforcing fiber bundle 01 is pulled out of the bobbin 02. The tension control mechanism 42 has a unit that measures the conveying tension of the reinforcing fiber bundle 01 pulled out of the bobbin 02 and controls the rotational speed of the unwinding motor via the control unit. More specifically, the tension control mechanism 42 has two guide rollers 421 that are supported and can rotate freely. A freely rotating and freely lifting floating roller 422 is arranged on the yarn path. The floating roller 422 is connected to a counterweight (not shown) and a lifting amount measuring sensor. The reinforcing fiber bundle 01, after passing through the tension control mechanism 42, is conveyed with tension regulated by the counterweight connected to the floating roller 422. When the conveying tension of the reinforcing fiber bundle 01 changes, the floating roller 422 lifts or lowers, the lifting amount measuring sensor detects the amount of lifting or lowering, and the control unit increases or decreases the rotational speed of the unwinding motor of the bobbin holder 41, thereby eliminating the change in conveying tension.

[0062] In the yarn feeding device 5, as the reinforcing fiber bundle 01 passes through multiple tension applying rollers 51 and an F-roller 54 located near the winding unit 6, the conveying tension of the reinforcing fiber bundle 01 is increased by utilizing the rotational resistance applied to each roller. More specifically, the tension applying roller 51 has a splicing portion that contacts the reinforcing fiber bundle 01 and a connecting portion that connects to the rotational resistance applying unit 52, transmitting the rotational resistance torque applied from the rotational resistance applying unit 52 from the splicing portion to the reinforcing fiber bundle 01. The rotational resistance applying unit 52 is a braking mechanism consisting of an electric motor, which receives a signal from a control unit (not shown) and generates torque resistance in the electric motor, thereby generating rotational resistance in the opposite direction to the rotation of the tension applying roller 51. The F-roller 54 is connected to the rotational resistance applying unit 53 with the same configuration as the connection between the tension applying roller 51 and the rotational resistance applying unit 52, and is located very close to the core material 03 mounted on the winding unit 6.

[0063] In the winding section 6, the core material 03 is supported by a support mechanism 61, and the core material 03 is rotated by a rotary drive mechanism 62 connected to one of the support mechanisms 61, thereby winding the reinforcing fiber bundle 01 around the core material 03. More specifically, the support mechanism 61 is a cylindrical member with a flange near one end, and the flange has a hole for connecting with the core material 03, connecting the core material 03 and the support mechanism 61 coaxially. In addition, the other end of the support mechanism 61 has a keyway and a parallel key (not shown) for connecting with the rotary drive mechanism 62, forming a structure that can transmit the rotation generated by the rotary drive mechanism 62 to the core material 03. The rotary drive mechanism 62 consists of a winding motor 621 and a connecting mechanism 622, which connects the winding motor 621 to one end of the support mechanism 61. In the rotary drive mechanism 62, the take-up motor 621 rotates at a target speed input by a control unit not shown, and the core material 03 rotates around its axis at a desired rotational speed via the connecting mechanism 622 and the support mechanism 61.

[0064] Furthermore, in this specification, the path for conveying the reinforcing fiber bundle when it is wound around the core material 03 via the winding device along a predetermined path through each roller is referred to as the filament path in the winding device. Here, the filament path of the winding device 100 is referred to as filament path 100a, and the same applies to winding devices in other embodiments thereafter. Due to the lateral movement when the reinforcing fiber bundle 01 is pulled out of the bobbin 02 and / or the rising and falling of the floating roller 422 associated with changes in conveying tension, the path for conveying the reinforcing fiber bundle 01 undergoes slight changes during operation, but the path within the range of these changes is designated as filament path 100a. Additionally, as... Figure 2As shown, for any adjacent constituent element in the winding apparatus 100 on the guide rail 100a, taking two imaginary guide rollers 71 and 72 as examples, the distance on the guide rail 100a from guide roller 71 to guide roller 72 is called the span 71-72 of guide rollers 71 and 72. For constituent elements of the apparatus other than guide rollers, the reference numerals of the constituent element that is the starting point of the guide rail at this distance and the reference numerals of the constituent element that is the ending point are also used to represent it. In the case where it is difficult to determine the guide rail 100a, the span 71-72 can be regarded as the shortest tangent segment among the tangent segments common to guide rollers 71 and 72 when viewed in a direction orthogonal to the rotation axis of guide rollers 71 and 72 at any instant during the operation of the winding apparatus 100. Here, when the core material 03 is approximately cylindrical, the span 54-03 is defined as the shortest tangent segment between the smallest diameter circumcircle in the direction orthogonal to the rotation axis of the core material 03 and the tangent segment of the F roller 54. However, as will be described later, when the F roller 54 and the core material 03 are pressed against each other by the reinforcing fiber bundle, and the distance in the yarn path from passing through the F roller 54 to contacting the core material 03 is 0 mm, the span 54-03 is not limited to this and is defined as the actual yarn path distance, i.e., 0 mm.

[0065] Here, in the winding apparatus 100, the span 54-03 between the F roller 54 and the core material 03 is less than 10 mm and the F roller 54 is connected to the rotational resistance application unit 53, which is important for winding the reinforcing fiber bundle 01 to the core material 03 under a state in which a high tensile stress is applied to the reinforcing fiber bundle 01.

[0066] This is because by keeping the span 54-03 short, the reduction in tensile strength of the reinforcing fiber bundle 01 can be suppressed. Therefore, in the winding device 100, by connecting the rotational resistance application unit 53 to the F roller 54, the part where the final conveying tension is applied becomes the F roller 54 closest to the core material 03 on the yarn path 100a, and the various components are arranged such that the span 54-03 between the F roller 54 and the core material 03 is less than 10 mm.

[0067] Figure 3This refers to a winding device 101, which is a different embodiment from the winding device 100. The winding device 101, based on the configuration of the winding device 100, includes an F-roller 54 and a rotational resistance application unit 53 mounted on a sliding mechanism 55. The sliding mechanism 55 consists of a linear guide mechanism capable of operating in one direction and a flat plate-shaped member for mounting the member, allowing the F-roller 54 and the rotational resistance application unit 53 to translate along an imaginary line segment connecting the axis of the F-roller 54 and the axis of the core material 03. The F-roller 54 and the core material 03 are preferably close together, in a position where they can be moved to contact using the sliding mechanism 55. Thus, during the operation of the winding device 101, a yarn path 101a can be constructed where the F-roller 54 and the core material 03 press against each other via the reinforcing fiber bundle 01. In the yarn path 101a, the reinforcing fiber bundle 01 contacts the core material 03 while passing through the F-roller 54, i.e., it is wound around the core material with the span 54-03 length being 0.

[0068] Figure 4 This refers to a winding device 102, which is a different embodiment from winding devices 100 and 101. In winding device 102, based on the configuration of winding device 101, a contact force adjustment mechanism 56 is connected to a sliding mechanism 55. Additionally, an sF roller 57, which is supported and rotatable, is provided upstream of the F roller 54. The contact force adjustment mechanism 56 consists of a pressure member 561, a block 562 supporting the pressure member 561, and a receiving member 563. By applying a force to the receiving member 563 mounted on the sliding mechanism 55 along the direction connecting the axis of the F roller 54 and the axis of the core material 03, supported by the pressure member 561, the force by which the F roller 54 and the core material 03 press against each other via the reinforcing fiber bundle 01 can be adjusted. Therefore, the force of the reinforcing fiber bundle 01 wound around the core material 03 being pressed against the axis of the core material 03 can be adjusted, and the force of the F roller 54 and the core material 03 pressing against each other through the reinforcing fiber bundle 01 can be minimized, thereby suppressing the generation of stress other than that generated in the longitudinal direction of the reinforcing fiber bundle 01.

[0069] Here, as Figure 5As shown, in the winding path 102a of the winding apparatus 102, considering the positional relationship of the F roller 54, the core material 03, and the sF roller 57 located immediately upstream of the F roller 54, when the core material is viewed from the cross-sectional direction, the imaginary line segment A that geometrically connects the axis of the F roller 54 and the axis of the core material 03 is orthogonal to the line segment B on the winding path 102a leading from the sF roller 57 to the F roller 54. Furthermore, the length of the reinforcing fiber bundle along the F roller 54 in the winding path 102a is within half the circumference of the F roller 54 plus or minus 5% above and below it. For example, assuming the circumference of the F roller 54 is 100 mm, then half the circumference is 50 mm, and 5% is 5 mm; therefore, the length of the aforementioned region is 45 to 55 mm. Moreover, when the core material is viewed from the direction orthogonal to the rotation axis, i.e., from the cross-sectional direction, the reinforcing fiber bundle crosses line segment A.

[0070] With this configuration, when the winding device 102 is used with the reinforcing fiber bundle 01 suspended based on the guide 102a, the direction of the force generated on the F roller 54 due to the tensile stress generated in the reinforcing fiber bundle 01 is ( Figure 5 The direction of the force generated on the F roller due to the mutual pressing of the F roller 54 and the core material 03 via the traveling reinforcing fiber bundle 01 (in the Y-axis direction), and the direction of the force generated on the F roller (in the Y-axis direction). Figure 5 The X-axis direction is orthogonal to the X-axis direction, and both can be adjusted independently.

[0071] Figure 6 This refers to a winding device 103, which is a different embodiment from winding devices 100, 101, and 102. Based on the configuration of winding device 102, the winding device 103 has a translation drive mechanism 63 on which the support mechanism 61 of the take-up section 6 and the rotation drive mechanism 62 are disposed. Additionally, the F-roller 54 is disposed on the sliding mechanism 55 in a state where it is disposed on the translation sliding mechanism 59. Furthermore, the translation drive mechanism 63 and the translation sliding mechanism 59 are mechanically connected by a translation drive transmission mechanism 64 (not shown). More specifically, the translation drive mechanism 63 consists of a translation motor 631, a linear movement mechanism 632, and a linear movement guide 633. The translation motor 631 is configured to be able to be linked with a take-up motor 621 (not shown) via a control unit (not shown). The translation motor 631 is configured to rotate in a direction parallel to the rotation axis of the core material 03 (or can rotate spontaneously by drive), and rotates in coordination with the rotational speed of the take-up motor 621. The rotation of the translation motor 631 is converted into linear motion parallel to the rotation axis of the core material 03 via the linear motion mechanism 632. This motion is transmitted to the support mechanism 61 supported by the linear motion guide 633 and the rotation drive mechanism 62, so that the core material 03 translates along its own rotation axis while rotating.

[0072] Furthermore, the translation motor 631 can reverse its rotation direction at a desired timing based on instructions from the control unit. That is, the core material 03 can perform reciprocating translational movement along its own rotation axis direction, also known as "reciprocating lateral movement," by reversing the translation direction after a desired timing and / or a desired amount of translation. Additionally, the translation sliding mechanism 59 is a mechanism that supports the F-roller 54 so that it can translate freely in the rotation axis direction of the core material 03. The translation sliding mechanism 59 transmits the force in the translation direction generated by the translation drive mechanism 63 via the translation drive transmission mechanism 64, enabling the F-roller 54 to reciprocate laterally in sync with the reciprocating lateral movement of the core material 03 without generating a relative velocity in the axial direction of the core material.

[0073] By configuring it in this way, even when the dimension of the core material 03 in the rotation axis direction is larger than the width dimension of the reinforcing fiber bundle 01, the position of the reinforcing fiber bundle 01 wound around the core material 03 can be changed successively by translating the core material 03. Therefore, the reinforcing fiber bundle 01 can be wound around the core material 03 in a desired area with an arbitrary length in the rotation axis direction. Moreover, by making the F roller 54 reciprocate in sync with the reciprocating traverse motion of the core material 03, the relative velocity between the outer peripheral surface of the F roller 54 and the outer peripheral surface of the core material 03 in the rotation axis direction can be suppressed in the area where the reinforcing fiber bundle 01 generates the maximum tensile stress. Therefore, the reinforcing fiber bundle 01 can be wound around the core material 03 in a state where the reinforcing fiber bundle 01 does not generate tensile stress other than tensile stress in the length direction.

[0074] A2. Preferred specifications for each component of the winding device:

[0075] Preferred embodiments of each component of the winding devices 100, 101, 102 and 103 are shown below.

[0076] (1) Reinforcing fiber bundles

[0077] As described above, the reinforcing fiber bundle 01 is a fiber bundle containing reinforcing fibers that are generally continuous along its length. In addition to the reinforcing fibers, it may also contain thermosetting and / or thermoplastic resins impregnated or coated on the reinforcing fiber bundle. Furthermore, these resins may be liquid, solid, or a mixture of liquid and solid at room temperature.

[0078] Furthermore, the material of the reinforcing fiber is not particularly limited. Besides carbon fiber and glass fiber, it can be freely selected and combined from aramid fibers, metal fibers, natural fibers, etc. However, considering the purpose of this disclosure—strengthening the motor rotor—it is preferable to select a material with high tensile strength. Specifically, a tensile strength of 2000 MPa or more is preferred. Generally, reinforcing fibers with a tensile strength of 6000 MPa or less are used. In addition, the preferred characteristics of the reinforcing fiber include the tensile modulus of elasticity and elongation at break in the fiber direction. The tensile modulus of elasticity calculated using the JIS R7606:2000B method is preferably 200 GPa or more, more preferably 280 GPa or more. There is no particular upper limit to this preferred tensile modulus of elasticity, but reinforcing fibers with a tensile modulus of elasticity of 350 GPa or less are generally used. Furthermore, the elongation at break of the reinforcing fiber calculated using the JIS R7606:2000B method is preferably 1.5% or more, more preferably 2.0% or more. There is no particular upper limit to the preferred elongation at break, but reinforcing fibers with an elongation at break of less than 2.5% are generally used.

[0079] (2) Cylindrical tube

[0080] The bobbin 02 is an object obtained by winding the reinforcing fiber bundle 01 around a cylindrical component. By applying a relative velocity to the end of the reinforcing fiber bundle 01 on the outer circumference and the bobbin 02 or by applying a force to the end of the reinforcing fiber bundle 01, the wound reinforcing fiber bundle 01 can be pulled out.

[0081] Furthermore, the bobbin in this disclosure refers to a so-called transverse winding member in which the winding position of the reinforcing fiber bundle changes continuously and reciprocally relative to the axial direction of the cylindrical member. However, in this disclosure, such transverse winding is not necessary, and a so-called "spool" obtained by winding the reinforcing fiber bundle with the longitudinal position of the cylindrical member fixed can be used as a substitute for the bobbin 02.

[0082] (3) Core material

[0083] The core material 03 is a cylindrical or substantially cylindrical object used for winding and coiling the reinforcing fiber bundle 01. Here, its cross-sectional shape orthogonal to the longitudinal direction does not necessarily need to be the same, and the outer diameter of the area where the reinforcing fiber bundle 01 is coiled (hereinafter referred to as the coiling region) can also be different from the outer diameter of other parts. For example, by making the outer diameter of the region located further outward than the coiling region in the direction of rotation larger than the outer diameter of the coiling region, the defect of so-called "coiling collapse," where the reinforcing fiber bundle 01 protrudes outward from the coiling region after coiling, can be suppressed when the reinforcing fiber bundle 01 is coiled while performing a reciprocating lateral motion. Furthermore, when the core material 03 is cylindrical, the shape of the cross-section orthogonal to the rotation axis on its outer circumferential surface does not necessarily need to be a perfect circle. In the coiling region, the ratio of the actual circumference of this cross-section to the smallest diameter circumcircle of the cross-section orthogonal to the rotation axis only needs to be in the range of 0.75 to 1.25, preferably in the range of 0.9 to 1.1.

[0084] As an example of a section of core material 03 orthogonal to the axis of rotation, such as Figure 7 As shown, a circular cross-section 03A can be cited as an example. On the other hand, as an example of the above cross-section when the core material 03 is approximately cylindrical, a generally circular cross-section such as a composite shape 03B formed by combining a planar portion and a curved portion, and a shape 03C with a groove having discontinuous recesses formed in its circumference can be cited.

[0085] In addition, the material of the core material 03 is not particularly limited as long as it can withstand the compressive force generated when the reinforcing fiber bundle 01 is tightly wound. It can be metal, ceramic, magnetic mineral, or a composite of these materials, adhesives and / or resins.

[0086] (4) Free rollers, floating rollers and guide rollers

[0087] The free roller 421, floating roller 422, and SF roller 57 are supported for free rotation and are used to define the travel path of the reinforcing fiber bundle 01. Their structure and materials are not specifically mentioned, but the material of the splicing part in contact with the reinforcing fiber bundle 01 can be metal, ceramic, rubber, or resin, or a composite product. However, it is preferred to select a high-strength material to avoid plastic deformation and / or breakage due to the reaction force generated when supporting the conveying tension of the reinforcing fiber bundle 01. Furthermore, if the reinforcing fiber bundle 01 contains liquid resin, it is more preferable to have a surface property with excellent release properties, or to have undergone a surface treatment to impart release properties, so as to prevent the liquid resin from adhering to the splicing part and contaminating the process.

[0088] Furthermore, the floating roller 422 is supported by a guide mechanism (not shown) for free lifting and lowering, and is adjusted to a desired weight by a counterweight (not shown), thereby enabling the conveying tension applied to the reinforcing fiber bundle 01 to be specified to a desired value. Alternatively, cylinder-based pressing, hydraulic cylinder-based pressing, or magnetic force-based pulling can also be used as alternatives to the counterweight.

[0089] Furthermore, from the viewpoint of reducing surface pressure during contact to avoid damaging the conveyed reinforcing fiber bundle, the outer diameter of the splicing portion of these free rollers, floating rollers, and guide rollers is preferably larger. On the other hand, when considering the case where the conveying speed of the reinforcing fiber bundle varies, the larger the diameter of the splicing portion of the roller, the less responsive the roller rotation speed is to the conveying speed of the reinforcing fiber bundle. Therefore, the outer diameter of the splicing portion of the roller is preferably limited to a certain value. In view of the above, the outer diameter of the splicing portion of these rollers that contacts the reinforcing fiber bundle is preferably in the range of φ25~150mm, more preferably in the range of φ50~105mm.

[0090] (5) Unwinding section

[0091] The unwinding section 4 supports the bobbin 02 and pulls out the reinforcing fiber bundle 01 while applying a certain conveying tension to it. The method for determining the conveying tension is not limited to the speed feedback control achieved by adjusting the displacement of the floating roller and the rotational speed of the unwinding motor as described above. It can also be a torque feedback control method that measures the conveying tension by installing a tension meter of the load sensor type in the yarn path and feeds it back to the rotational torque of the unwinding motor. Alternatively, it can be a method that replaces the unwinding motor with a magnetic powder brake or a hysteresis brake to provide feedback control of the braking force.

[0092] (6) Silk Road Construction Equipment Department

[0093] The yarn path forming equipment section 5 specifies a yarn path for conveying the reinforcing fiber bundle 01 supplied from the unwinding section 4 and feeding the reinforcing fiber bundle 01 to the winding section 6. As long as the component closest to the core material 03 on the yarn path is the F-roller 54 and the F-roller 54 is connected to the rotational resistance application unit 53, there are no particular limitations on other components of the yarn path forming equipment section 5. Components can be freely selected and configured considering the material of the reinforcing fiber bundle 01, the applied conveying tension, etc. Here, as components constituting the yarn path forming equipment section 5, any component that contacts the reinforcing fiber bundle 01 to apply support or force for forming the yarn path is acceptable. Besides components that directly contact the reinforcing fiber bundle 01, such as rollers or fixed rods, components that indirectly contact the reinforcing fiber bundle 01 via internal or internal liquid or gas are also acceptable. On the other hand, components that neither directly support the reinforcing fiber bundle 01 nor indirectly support the reinforcing fiber bundle 01 do not conform to the components of the filament conveying equipment. For example, components such as a camera used to measure the position of the reinforcing fiber bundle 01 or a sensor used to measure the temperature of the reinforcing fiber bundle 01 do not conform to the components of the filament conveying equipment.

[0094] For example, to apply higher conveying tension, a tension-applying unit may be provided upstream of the F-roller 54, or a configuration may be formed by arranging multiple tension-applying rollers 51 connected to the rotational resistance application unit 52. Alternatively, a configuration may be provided in which a fixed rod is pressed against the reinforcing fiber bundle 01 to apply tension through friction, or a configuration may be provided in which the reinforcing fiber bundle travels through liquid resin stored in a liquid tank and tension is applied through the viscous resistance of the reinforcing fiber bundle as it passes through the liquid resin.

[0095] However, in the components of the yarn conveying equipment, from the viewpoint of achieving higher conveying tension, it is preferable to apply tension in a manner that does not generate excessive load beyond the tension on the reinforcing fiber bundle 01. In principle, compared to the rod method that generates scraping on the reinforcing fiber bundle and the liquid tank method that generates out-of-plane force when moving in the liquid resin in the liquid tank and leaving, the roller method that does not have a relative velocity with the reinforcing fiber bundle 01 and can apply tension using its own rotational resistance is more preferable.

[0096] Here, in the tension applying roller 51 equipped with the rotational resistance applying unit 52, the manner in which the rotational resistance applying unit applies to the roller is not particularly limited. Besides the torque resistance based on an electric motor, as exemplified by the rotational resistance applying unit 52 described above, the tension applying roller 51 may have a brake disc for connection to a mechanical braking mechanism, and the rotational resistance may be generated by applying frictional resistance to the brake disc through the mechanical braking mechanism. Alternatively, it may be based on a magnetic powder brake or a hysteresis brake. However, considering the stability of the rotational resistance and durability during continuous operation, the torque resistance method using an electric motor, which allows for the application of rotational resistance in a non-contact manner, is preferred.

[0097] (7) F roller

[0098] The F-roller 54 is a roller connected to the rotational resistance application unit 53 to maximize the tensile stress of the reinforcing fiber bundle 01 that is about to be wound onto the core material 03. The material of the F-roller 54 is not particularly limited in terms of its composition or material, as long as it has the strength to withstand the load transmitted from the reinforcing fiber bundle 01 and the rotational resistance application unit 53 and has a coefficient of friction at the splice portion that prevents slippage between it and the reinforcing fiber bundle 01. On the other hand, when the F-roller 54 and the core material 03 are pressed against each other via the reinforcing fiber bundle 01, in order to limit the load generated in the out-of-plane direction of the reinforcing fiber bundle 01 in the winding devices 101, 102, and 103, the surface material of the splice portion of the F-roller 54 is preferably soft. Considering the strength-related requirements mentioned above, a composite structure with a soft rubber layer formed on the outer periphery of a hard material such as metal or ceramic is preferred. Furthermore, when using the F-roller 54 with this structure and the reinforcing fiber bundle 01 contains a liquid resin component, it is preferable to form a release film on the surface of the rubber layer to prevent the liquid resin component seeping from the reinforcing fiber bundle 01 from adhering to and accumulating on the surface of the F-roller 54.

[0099] A3. Manufacturing method of fiber composite materials:

[0100] Figure 8 This is a flowchart illustrating a method for manufacturing fiber composite materials. After... Figure 8 The flowchart shown illustrates the steps involved in manufacturing a fiber composite material. The manufactured fiber composite material comprises fiber bundles and resin impregnated within the fiber bundles. In this embodiment, the resin impregnated within the fiber bundles is a thermosetting resin.

[0101] In step S100, the reinforcing fiber bundle 01 is continuously pulled out from the bobbin 02 containing the reinforcing fiber bundle 01 under a tensile stress T0 applied to the reinforcing fiber bundle 01 along its fiber length direction. In the process of step S100, any one of the winding devices 100, 101, 102, and 103 of this disclosure (see reference 103) can be used. Figure 1 , Figure 3 , 4 and Figure 6 ).

[0102] In step S200, the reinforcing fiber bundle 01 passes through the yarn forming device 5 and is conveyed to the F roller 54 in a state in which the tensile stress of the reinforcing fiber bundle 01 increases from T0 to Tf1.

[0103] In step S300, the reinforcing fiber bundle 01 passes through the F roller 54 and is conveyed to the core material 03 under the condition that the tensile stress applied to the reinforcing fiber bundle 01 increases from Tf1 to Tf.

[0104] In step S300, the F roller 54 and the core material 03 are in a state where they are pressed against each other by the reinforcing fiber bundles. Figure 5 In the embodiment shown, the distance from passing through the F roller 54 to contacting the core material 03 in the filament path of the reinforcing fiber bundle 01 is approximately 0 mm.

[0105] In step S400, the reinforcing fiber bundle 01 is wound around the core material 03 under a tensile stress Tf.

[0106] Furthermore, the tensile stress along the fiber length of the reinforcing fiber bundle 01 at the time points when steps S100 to S400 are completed is T0 in step S100, Tf1 in step S200, and Tf in steps S300 and S400. For a specific example, when the winding device 102 is operated, T0 is 35 MPa, Tf1 is 1050 MPa, and Tf is 2300 MPa.

[0107] Here, the tensile stress along the fiber length of the reinforcing fiber bundle 01 is a value calculated by dividing the conveying tension applied to the reinforcing fiber bundle 01 by the sum of the cross-sectional areas of the included reinforcing fibers. That is, even when conveying a material containing resin in addition to fibers, the cross-sectional area of ​​the resin component is not used in the calculation of tensile stress. Furthermore, even when the reinforcing fiber bundle 01 contains reinforcing fibers with the aforementioned "broken fiber defects" or "loose fiber defects," the tensile stress is calculated based on the assumption that all reinforcing fibers bear the stress equally.

[0108] Furthermore, regarding the tensile stresses mentioned above, in order to prevent unwinding of the reinforcing fiber bundle from the bobbin unscrambled, T0 is preferably small enough to not apply a load to the bobbin; specifically, it is preferably kept below 100 MPa. On the other hand, the larger Tf is, the better the effect of tight winding; therefore, it is preferably, specifically, above 2000 MPa and below 90% of the tensile strength of the reinforcing fiber bundle. In addition, Tf1 is determined based on the tensile stress increased by the F roller and Tf. In order to suppress fiber breakage during conveying, it is preferably stopped at a low value, preferably more than 1 / 10 and less than 1 / 2 of Tf, and more preferably more than 1 / 5 and less than 1 / 3 of Tf.

[0109] By performing the processes shown in the flowchart, the reinforcing fiber bundle 01 accumulated in the bobbin 02 can be tightly wound onto the core material 03 without breaking during the process, under high tension—that is, under high tensile stress. As a result, even after the core material 03 with the reinforcing fiber bundle 01 wound on it has been cured and formed, when it is applied to the rotor of the motor and the motor is rotated at high speed, the shedding of the permanent magnet and / or damage to the rotor caused by centrifugal force can be suppressed, resulting in a motor with excellent performance.

[0110] Furthermore, as will be readily understood by those skilled in the art, the present invention is not limited to these embodiments. For example, it should be understood that the components and structures described in each embodiment can be appropriately modified in combination, appropriately replaced with known technologies, or applied with components and structures that can be readily conceived by those skilled in the art based on known technologies. Additionally, the upper and lower limits of the numerical ranges described above can be arbitrarily combined. Moreover, the method for manufacturing fiber composite materials using the winding apparatus of the present invention should also be understood as an aspect of the present invention.

[0111] A4. Other embodiments of the winding device:

[0112] Figure 9 This refers to winding device 104, which is an embodiment different from winding devices 100, 101, 102, and 103. Winding device 104 has two end members 65 in the take-up section 6. Each end member 65 has a missing shape obtained by cutting off a portion of the outer peripheral surface of a disc shape. It is fixed to support mechanism 651 such that the center of the disc shape coincides with the rotation axis of the core material 03 when viewed from a direction orthogonal to the rotation axis of the core material. The outer diameter of the disc shape is larger than the outer diameter of the core material 03, and it protrudes outwards. Here, as... Figure 10As shown in the schematic diagram viewed from the rotation axis direction of the core material 03, the end member 65 does not overlap with the F roller when viewed from the axial direction of the core material. That is, in the cut-off portion, i.e., the missing portion, the end member 65 does not protrude radially beyond the outer radial direction of the core material, and the end member 65 does not interfere with the rotation of the F roller 54. Furthermore, the end member 65 mentioned here does not include the supplementary member not shown in the following description. Moreover, the end member 65 rotates independently without being linked to the rotation of the core material 03, and is not fastened to the core material 03, the support member 61, or the rotation drive mechanism 62. Instead, it is fastened to other support mechanisms 651 constituting the take-up section 6, and fixed adjacent to both ends of the core material 03 in the axial direction.

[0113] By providing the end member 65, when the reinforcing fiber bundle 01 is wound onto the core material 03 using the winding device 104, the overlapping reinforcing fiber bundles 01 are tightened due to their own tension, preventing them from collapsing in a manner that expands towards the rotation axis of the core material 03 (hereinafter referred to as "winding collapse"). Therefore, the applied tension can be reliably maintained for transfer to the next process. Furthermore, since the end member 65 is fixed in a manner that does not involve rotational linkage with the core material 03, the position of the missing portion is fixed, and the end member 65 and the F roller 54 can always be kept in a state where they do not interfere with each other. Moreover, since the end member 65 is fixed to the take-up section 6, when using… Figure 9 When the translation mechanism (not shown) causes the take-up section 6 to translate relative to the F roller 54 in the direction of the rotation axis of the core material 03, the end member 65 can also translate together with the core material 03 relative to the F roller 54.

[0114] Here, the two end members 65 do not necessarily need to be fixed at both ends in the axial direction of the core material 03; they can also be fixed at overlapping positions on the outer peripheral surface of the core material 03. By adopting such an arrangement, the winding of the reinforcing fiber bundle 01 is not limited to the entire area of ​​the outer peripheral surface of the core material 03, i.e., the width of the outer peripheral surface of the core material 03 in the axial direction is the same as the width of the winding area. Even when the width of the outer peripheral surface of the core material 03 is longer than the width of the winding area, the aforementioned effect of preventing winding collapse can still be obtained, that is, winding collapse can be prevented within a predetermined range of the winding area.

[0115] Furthermore, when the winding device 104 has a translation drive mechanism 63 and the position of the reinforcing fiber bundle 01 wound on the core material 03 changes successively through reciprocating lateral movement, the following configuration can be adopted: the support mechanism 651 of the end member 65 is fixed to the member that moves by the translation drive mechanism 63. Thus, the end member 65 is not linked to the rotation of the core material, but rather to the reciprocating lateral movement of the core material. Therefore, it has no effect on the positional variation in the rotation axis direction of the core material, and the two ends of the winding area of ​​the core material can always be controlled to prevent winding collapse.

[0116] Furthermore, the end member 65 can be configured to have a mechanism for fastening it to the core material 03. Therefore, after the winding process is completed, the end member 65 is fastened to the core material 3 and removed from the winding apparatus 104. For example, when the reinforcing fiber bundle 01 is impregnated with thermosetting resin, and during subsequent processes such as the resin heating and curing process, the position of the end member 65 relative to the winding area of ​​the core material 03 can be maintained. Thus, when the wound reinforcing fiber bundle 01 is impregnated with resin, winding collapse can be prevented until the resin bonds or fixes itself to the core material 03 with sufficient strength.

[0117] Furthermore, the fastening connection between the end member 65 and the core material 03 in the above-described scheme can be either a structure in which the core material 03 has a threaded portion for fastening connection and the end member 65 is fixed using the threaded portion, or a structure in which the core material 03 is held by clamping the two end members 65, or the distance between the two end members 65 is fixed by using a support column, etc. There is no particular limitation as long as the structure is a structure that fixes the relative position between the core material 03 and each end member 65.

[0118] Furthermore, the configuration can be configured such that a supplementary member (not shown) completes the missing portion of the end member 65, and the end member 65 protrudes outward from the outer periphery of the core material 03 throughout the entire outer circumference of the core material 03, and can be attached and detached relative to the core material 03 or the end member 65. The supplementary member (not shown) can be installed on the core material after the winding process. The supplementary member (not shown) completes the portion of the missing portion of the end member 65 that does not protrude outward from the outer radial direction of the core material, so the winding area on the core material 03 is protected throughout the entire circumference by the end member 65 and the supplementary member (not shown). Therefore, in the event of resin flow, such as when the resin component contained in the reinforcing fiber bundle 01 wound to the core material 03 is subjected to heat treatment in a subsequent process, it is possible to prevent the reinforcing fiber bundle 01 from the missing portion of the end member 65 from unwinding.

[0119] A5. Other embodiments of the method for winding reinforced fiber bundles:

[0120] Figure 11 A schematic diagram showing a winding device 105, which is different from winding devices 100, 101, 102, 103, and 104. Figure 12 This diagram shows the winding section 6 and F roller 54 in the winding device 105 as viewed from the top surface.

[0121] In the winding apparatus 105, the take-up section 6 includes a translation motor 631, a linear motion mechanism 632, and a linear motion guide 633, allowing the core material 03 to reciprocate laterally in its own rotational axis direction. Furthermore, the core material 03 has outer peripheral surfaces 03D at both ends of the winding area with a diameter larger than the outer diameter of the winding area, and the outer peripheral surface of the F roller 54 that contacts the reinforcing fiber bundle 01 has a width 1.1 times the width of the reinforcing fiber bundle 01. When the reinforcing fiber bundle 01 is wound onto the core material 03 using the winding apparatus 105, the width of the reinforcing fiber bundle 01 is smaller than the width of the winding area of ​​the core material 03. To utilize the reinforcing fiber bundle 01 to cover the winding area, the core material 03 rotates while reciprocating laterally in its own rotational axis direction, successively changing the position of the wound reinforcing fiber bundle 01. Here, the range of reciprocating traverse motion required to cover the entire winding area using the reinforcing fiber bundle 01 is a value obtained by subtracting the width of the reinforcing fiber bundle 01 from the width of the winding area. Correspondingly, during winding, the F-roller 54 and the core material 03 press against each other via the reinforcing fiber bundle 01. Regarding the range of the aforementioned reciprocating traverse motion, to avoid interference between the F-roller 54 and the large-diameter outer circumferential surface 03D of the core material, the maximum range is also a value obtained by subtracting the width of the F-roller 54 from the width of the winding area. Therefore, at the end of the winding operation, the entire winding area of ​​the core material 03 cannot be covered using the reinforcing fiber bundle 01; only the difference between the width of the F-roller 54 and the width of the reinforcing fiber bundle 01 remains.

[0122] However, when heat treatment is performed after the winding operation, winding collapse occurs in the wound reinforcing fiber bundle 01, and the reinforcing fiber bundle 01 expands in the direction of the rotation axis of the core material 03, thereby eventually covering the entire winding area with the reinforcing fiber bundle 01. At this time, in order to suppress the decrease in tension applied to the reinforcing fiber bundle 01 as winding collapse occurs, it is important to minimize the amount of winding collapse.

[0123] Therefore, when using the winding device 105, from the viewpoint of covering the entire winding area with the reinforcing fiber bundle 01 in a manner that does not cause winding collapse, it is most preferable that the width of the reinforcing fiber bundle 01 is the same as the width of the F roller 54. However, in actual winding operations, considering the tolerance range of the width of the reinforcing fiber bundle 01 and the accuracy of the travel position of the reinforcing fiber bundle 01, it is practically preferable that the width of the surface of the F roller 54 in contact with the reinforcing fiber bundle is larger than the width of the reinforcing fiber bundle 01. Specifically, it is preferable that it is 1.5 times or less relative to the width of the reinforcing fiber bundle 01.

[0124] Furthermore, the width of the aforementioned reinforcing fiber bundle 01 is set as the average value obtained by measuring lengths orthogonal to the fiber direction at 1 mm intervals in the fiber direction of the reinforcing fiber bundle 01, taking the reinforcing fiber bundle 01 used in the winding operation as the whole object.

[0125] Explanation of reference numerals in the attached figures

[0126] 01…Reinforcing fiber bundles

[0127] 02…Bollard

[0128] 03…core material

[0129] The shape of the cross-section of the core material orthogonal to the axis of rotation, 03A, 03B, 03C…

[0130] 03D...Large diameter outer surface

[0131] 4… Unwinding section

[0132] 41…Boll tube retainer

[0133] 42…Tension control mechanism

[0134] 421…Guide roller

[0135] 422… Floating Roller

[0136] 5…Silk Road Construction Equipment Department

[0137] 51…Tension Application Roller

[0138] 52… Rotational resistance application unit

[0139] 53… Rotational resistance application unit

[0140] 54…F roll

[0141] 55… Sliding Mechanism

[0142] 56…Contact Force Adjustment Mechanism

[0143] 561…Pressure-pressurized components

[0144] 562… blocks

[0145] 563… Components

[0146] 57…sF roll

[0147] 59… Translation and sliding mechanism

[0148] 6… Rolling section

[0149] 61… Support mechanism

[0150] 62… Rotary drive mechanism

[0151] 621… Winding Motor

[0152] 622…Connecting Mechanism

[0153] 63… Translation drive mechanism

[0154] 631… Translation motor

[0155] 632… Linear Movement Mechanism

[0156] 633… Linear movement guide

[0157] 64… Translation drive transmission mechanism

[0158] Guide rollers

[0159] 72…Guide rollers

[0160] 100… Winding device

[0161] 100a… The winding path of the winding device 100

[0162] 101… Winding device

[0163] 101a…The winding path of the winding device 101

[0164] 102… Winding device

[0165] 102a…The wire path of the winding device 102

[0166] 103… Winding device

[0167] 103a…The winding path of the winding device 103

[0168] 104… Winding device

[0169] 105… Winding device

[0170] A…an imaginary line segment connecting the axis of F roller 54 to the axis of core material 03.

[0171] B…the line segment on the guide 102a from sF roller 57 to F roller 54.

[0172] C…span 71-72

[0173] D…Direction of process execution

[0174] E…reciprocating lateral motion direction

Claims

1. A winding apparatus for reinforcing fiber bundles, comprising: an unwinding section having a bobbin or spool for supplying reinforcing fiber bundles by applying tensile stress to the reinforcing fiber bundles wound on the bobbin or spool; a plurality of components forming a path for conveying the reinforcing fiber bundles; and a winding section having a core material and a mechanism for supporting the core material and rotating the core material about its axis to wind the reinforcing fiber bundles around its outer periphery. When the path is designated as the guideway and the multiple components are designated as the guideway assembly, the component in the guideway assembly that is closest to the core material on the guideway is the roller. When the roller is set as an F roller, the F roller is connected to the rotational resistance application unit, and the distance from the F roller to the core material on the yarn path is less than 10 mm.

2. The winding device for reinforcing fiber bundles according to claim 1, The configuration is such that the F-roller and the core material are close to each other and can move to a positional relationship where they are pressed together by the traveling reinforcing fiber bundles.

3. The winding device for reinforcing fiber bundles according to claim 2, The winding device for the reinforcing fiber bundle has a contact force adjustment mechanism that adjusts the force of the F roller and the core material pressing against each other through the reinforcing fiber bundle.

4. The winding device according to claim 2 or 3, The configuration is such that the yarn path forming equipment includes rollers other than the F roller, and the roller located immediately upstream of the F roller on the path of the reinforcing fiber bundle is designated as the sF roller. When the core material is viewed from a direction orthogonal to the rotation axis of the core material, the line segment A that geometrically connects the axis of the core material to the axis of the F roller, and the line segment B on the yarn path from the sF roller to the F roller are orthogonal. Furthermore, the configuration is such that, in the yarn path, the length of the area where the F roller contacts the reinforcing fiber bundle is within 1 / 2 of the outer circumference of the F roller and within 5% above and below it.

5. The winding device according to claim 4, The winding section has a mechanism that causes the core material to reciprocate in the axial direction, and the F roller reciprocates in parallel with the reciprocating motion of the core material.

6. A method for winding a reinforcing fiber bundle, comprising applying tensile stress to a reinforcing fiber bundle stored in a bobbin or spool to pull out the reinforcing fiber bundle, conveying the reinforcing fiber bundle along a filament path using a plurality of components constituting a path for conveying the reinforcing fiber bundle, and then winding the reinforcing fiber bundle into a core material. When the path is set as a filament path and the multiple components are set as a filament path forming equipment, the component in the filament path forming equipment that is closest to the core material on the filament path is a roller. When this roller is set as an F roller, by applying rotational resistance to the F roller, the tensile stress generated in the reinforcing fiber bundle is increased, and the distance from the F roller to the core material on the filament path is less than 10 mm.

7. The method for winding the reinforcing fiber bundle according to claim 6, When the core material is viewed from a direction orthogonal to the rotation axis of the core material, the reinforcing fiber bundles traverse line segment A, which geometrically connects the axis of the core material to the axis of the F roller. The F roller and the core material are pressed against each other by the traveling reinforcing fiber bundles.

8. The method for winding the reinforcing fiber bundle according to claim 7, The direction of the force generated by the tensile stress in the reinforcing fiber bundles on the F roller is orthogonal to the direction of the force generated by the F roller and the core material pressing against each other through the traveling reinforcing fiber bundles.

9. The method for winding the reinforcing fiber bundle according to claim 8, The core material is rotated about its axis, and the core material and F roller reciprocate in a manner that does not produce a relative velocity in the direction of the core material's rotation axis.

10. The winding apparatus according to claim 2 or 3, The core material has end members on its outer circumferential surface or at both ends in the direction of the rotation axis. These end members protrude radially beyond the outer radial direction of the core material and are supported independently without being linked to the rotation of the core material. The end member has a shape with a portion of its outer peripheral surface missing, at which the missing portion does not protrude radially beyond the outer radial side of the core material and does not overlap with the F roll when viewed from the axial direction of the core material.

11. The winding apparatus according to claim 10, The winding section has a mechanism that causes the core material to reciprocate relative to the F roller along its rotation axis, and the end member is supported in a manner that is linked to the reciprocating motion in the rotation axis direction of the core material.

12. The winding apparatus according to claim 11, The end member has a mechanism for fastening it to the core material.

13. The winding apparatus according to claim 12, The winding device has a completion member that completes the missing portion of the end member and can be loaded and unloaded relative to the core material or the end member. The finishing member protrudes radially beyond the outer radial side of the core material and extends across the entire outer periphery of the core material. The missing portion of the end member is located at the part that does not protrude radially beyond the outer radial side of the core material.

14. The method for winding the reinforcing fiber bundle according to claim 7 or 8, End members are respectively provided at both ends of the area where the reinforcing fiber bundle is wound into the core material. The end members protrude radially beyond the outer radial side of the core material and are supported independently without being linked to the rotation of the core material. The end members have a shape with a portion of the outer peripheral surface missing. At the missing portion, they do not protrude radially beyond the outer radial side of the core material and do not overlap with the F roller when viewed from the axial direction of the core material.

15. The method for winding the reinforcing fiber bundle according to claim 14, The winding section reciprocates along the rotation axis of the core material, and the end members reciprocate in conjunction with the core material.

16. A method for strengthening a core material, After implementing the method of winding the reinforcing fiber bundle according to claim 15, the end member according to claim 14 is fastened relative to the core material.

17. The method for strengthening the core material according to claim 16, After implementing the method of winding the reinforcing fiber bundle according to claim 15, a completion member for completing the missing portion of the end member is installed on the core material or the end member. The completion member is used to complete the portion of the missing portion of the end member that does not protrude radially beyond the outer side of the core material throughout the entire outer periphery of the core material.

18. The method for winding the reinforcing fiber bundle according to claim 8, The core material is rotated about its axis, and the core material and the F roller reciprocate at a relative speed in the direction of the core material's rotation axis. Furthermore, on the outer circumferential surface of the core material, areas where the reinforcing fiber bundles are not wound are provided on both sides of the area where the reinforcing fiber bundles are wound, so that the width of the surface of the F roller that contacts the reinforcing fiber bundles is larger than the width of the reinforcing fiber bundles but less than 1.5 times it.

Images