CN114248463B - Fabric, jig and manufacturing method thereof - Google Patents

Fabric, jig and manufacturing method thereof Download PDF

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Publication number
CN114248463B
CN114248463B CN202010997527.1A CN202010997527A CN114248463B CN 114248463 B CN114248463 B CN 114248463B CN 202010997527 A CN202010997527 A CN 202010997527A CN 114248463 B CN114248463 B CN 114248463B
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China
Prior art keywords
fiber
axial
grooves
jig
fabric
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CN202010997527.1A
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Chinese (zh)
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CN114248463A (en
Inventor
李小明
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Jiangsu Goldwind Science and Technology Co Ltd
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Jiangsu Goldwind Science and Technology Co Ltd
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Priority to CN202010997527.1A priority Critical patent/CN114248463B/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
    • B29C70/202—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres arranged in parallel planes or structures of fibres crossing at substantial angles, e.g. cross-moulding compound [XMC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
    • B29C70/205—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres the structure being shaped to form a three-dimensional configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/541—Positioning reinforcements in a mould, e.g. using clamping means for the reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/082—Blades, e.g. for helicopters
    • B29L2031/085—Wind turbine blades

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)

Abstract

The present disclosure provides a fiber fabric, a jig and a manufacturing method thereof, the fiber fabric including a fiber layer including: a plurality of axial fiber bundles arranged at intervals from each other in the width direction of the fiber web, the axial orientation of the plurality of axial fiber bundles being arcuate. The fiber fabric according to the embodiment of the disclosure comprises fiber bundles which are arc-shaped at least in the length direction, and can be matched with the shape of the curved structural member when being used for the curved structural member, so that the fiber fabric is higher in fit and better in structural performance of a product.

Description

Fabric, jig and manufacturing method thereof
Technical Field
The disclosure relates to the technical field of materials, and in particular relates to a fiber fabric, a jig for the fiber fabric and a manufacturing method of the fiber fabric.
Background
Reinforcing materials such as glass fibers and carbon fibers are commonly used for structural composite material products to provide mechanical strength and rigidity required by structural members, and when the reinforcing materials are generally used as structural member fabrics, the reinforcing materials are woven in unidirectional, biaxial, triaxial, tetraxial and other directions at an angle, which is called as a predetermined-direction fabric, and the reinforcing materials are commonly linear in fibers so that the direction of the fabric is consistent with the direction of bearing capacity, and the optimal effect is achieved. As shown in fig. 1, the conventional monoaxial fabric may include a plurality of yarn bundles 1 arranged parallel to each other, each yarn bundle 1 extending straight in a 0-degree direction, and the plurality of yarn bundles 1 may be bound and fixed by binder yarns 2. However, for large curved irregular composite structural members, the linear fiber fabric does not match the shape of the target article and the laying operation is difficult.
Disclosure of Invention
It is an object of the present disclosure to provide a fibrous web having an arc that matches the shape of the target article.
According to an aspect of the present disclosure, there is provided a fibrous fabric comprising a fibrous layer comprising: a plurality of axial fiber bundles arranged at intervals from each other in the width direction of the fiber web, the axial orientation of the plurality of axial fiber bundles being arcuate.
Alternatively, the radians of the axial orientations of the plurality of axial fiber bundles may be different.
Alternatively, the axial tows may be curved in the height direction of the fibrous web.
Alternatively, the width direction of the fiber web may have an arc.
Alternatively, the fibrous web may comprise a plurality of fibrous layers stacked upon one another.
Alternatively, the axial orientation of the axial tows within adjacent two of the plurality of fiber layers may be different.
Optionally, the fiber layer may further comprise a binding wire binding the plurality of axial fiber bundles together.
Another aspect of the present disclosure provides a curved structural member having a fabric as described above as a skeleton, the fabric having an arc matching the curved structural member.
Alternatively, the curved structural member may be a blade of a wind turbine.
Yet another aspect of the present disclosure provides a jig for a fiber fabric, the jig may include: a main body; and a guide mechanism including: and a plurality of grooves formed on the body at intervals from each other, each of the plurality of grooves being curved in a length direction to form a curved groove.
Alternatively, the curvature of the plurality of grooves in the length direction may be different.
Alternatively, the groove depth of the groove may be different in the length direction.
Alternatively, the groove depths of the plurality of grooves are different on the same cross section perpendicular to the length direction of the grooves, so that the plurality of grooves are arranged in an arc shape.
Alternatively, the jig may include a plurality of guide mechanisms, and the length direction of the grooves in the plurality of guide mechanisms may be different.
Optionally, the jig may further include: the binding holes or binding grooves are arranged along a direction perpendicular to the length direction of the groove.
Yet another aspect of the present disclosure provides a method of manufacturing a fibrous web, using the jig as described above to manufacture the fibrous web as described above, the method of manufacturing comprising: respectively placing a plurality of axial fiber bundles in a plurality of grooves of a guide mechanism, and applying tension to enable the axial fiber bundles to be in arc fit with the grooves; a plurality of axial fiber bundles are bound together with binding wires to form a fiber layer.
The fiber fabric according to the embodiment of the disclosure comprises fiber bundles which are arc-shaped at least in the length direction, and can be matched with the shape of the curved structural member when being used for the curved structural member, so that the fiber fabric is higher in fit and better in structural performance of a product.
Drawings
The foregoing and/or other objects and advantages of the disclosure will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of a conventional fiber fabric.
Fig. 2 is a top view of a fibrous layer of a fibrous web according to an exemplary embodiment of the present disclosure.
Fig. 3 is a schematic view of a jig for manufacturing a fiber fabric according to an exemplary embodiment of the present disclosure.
Fig. 4 is a left side view of a jig for manufacturing a fiber fabric according to another exemplary embodiment of the present disclosure.
FIG. 5 is a schematic view of a blade according to an exemplary embodiment of the present disclosure.
Reference numerals illustrate:
1: a yarn bundle; 2: binding yarn; 100: a fibrous layer; 101: an axial fiber bundle; 102: binding wires; 200: a jig; 201: a main body; 202: a groove; 203: a binding groove; 300: a blade; 301: a trailing edge; 302: the blade tip is swept back.
Detailed Description
Hereinafter, a fiber fabric according to an exemplary embodiment of the present disclosure, a jig thereof, and a method of manufacturing the same will be described in detail with reference to the accompanying drawings. Like numbers refer to like elements throughout.
It will be appreciated that the use of the terms first, second, etc. may not indicate a sequence or importance, but rather the terms first, second, etc. may be used to distinguish one element from another.
As shown in fig. 2, the fiber fabric of the exemplary embodiment of the present disclosure may include a fiber layer 100, the fiber layer 100 including: a plurality of axial fiber bundles 101 arranged at intervals from each other in a first direction (y direction in fig. 2), and axial orientations of the plurality of axial fiber bundles 101 (i.e., length direction of the fiber web, x direction in fig. 2) are arc-shaped.
In comparison with the conventional fiber fabric including the yarn bundle 1 in a straight line shape, the fiber bundle 101 according to the exemplary embodiment of the present disclosure is curved at least in the length direction to be more fitted to a curved structural member when used for the curved structural member, thereby facilitating the laying.
According to the fiber fabric of the present disclosure, the axial fiber bundles 101 may also be referred to as yarn bundles, each yarn bundle 101 may be bound together by one or more yarns, the material of which may typically be glass fibers or carbon fibers, or the like.
The plurality of axial tows 101 may be coaxially aligned, i.e., the plurality of axial tows in the fiber layer may be equally oriented and curved. However, the present disclosure is not limited thereto and the radians of the axial orientations of the plurality of axial fiber bundles may also be different.
In addition, the axial fiber bundle 101 may have an arc shape in the second direction, which is the height direction (z direction in fig. 3) of the fiber fabric, so that the axial fiber bundle 101 has an arc shape in both the length direction and the height direction, and the axial fiber bundle 101 has a three-dimensional curve structure.
Further, the first direction may be a non-linear/non-linear direction. That is, the first direction has an arc such that the plurality of axial fiber bundles are spaced apart from each other along the first direction having a certain arc. Therefore, the whole fiber fabric is three-dimensional arc-shaped, and has radians in the length direction, the height direction and the width direction of the fiber fabric.
According to an embodiment of the present disclosure, the fiber web is curved to match the shape of the curved structural member by arranging the axial fiber bundles such that the fiber web is curved in at least one of the length direction, the width direction, and the height direction of the fiber web.
The fibrous web may include a plurality of fibrous layers 100 that are stacked upon one another to form a preformed fibrous web. Wherein the axial orientation of the axial tows 101 within adjacent two of the plurality of fiber layers 100 may be the same, i.e., forming a uniaxial fiber web. The present disclosure is not limited thereto and the axial orientation of the axial tows 101 in adjacent two of the plurality of fiber layers 100 may also be different so that a bi-axial, tri-axial, tetra-axial, etc. different directional axial fiber web may be formed. For example, in another embodiment, the fibrous web may comprise at least three fibrous layers 100, wherein the axial direction of the axial tows 101 in one of the fibrous layers is oriented at 0 degrees, the axial direction of the axial tows in one of the fibrous layers stacked above it is oriented at +45 degrees, and the axial direction of the axial tows 101 in the other fibrous layer stacked below it is oriented at-45 degrees. Wherein, the yarn bundles 101 in at least 0 degree direction may be arranged in an arc shape along the axial direction thereof, and the radian of each yarn bundle 101 may be different from each other.
The fiber fabric according to the present disclosure may further comprise a backing yarn (not shown) which may be arranged in a direction substantially perpendicular to the axial fiber bundle 101 for weaving with the yarn bundles into a mesh structure and for securing the yarn bundle spacing action.
The fiber fabric according to the present disclosure may further include a binding thread 102 binding the plurality of axial fiber bundles 101 together with the backing yarn, the binding thread 102 may connect the plurality of axial fiber bundles 101 together in a direction substantially perpendicular to the axial fiber bundles 101, and the binding thread 102 may employ various common weaving patterns. For example, a short diagonal binding wire 1 as shown in fig. 1.
Another aspect of the present disclosure provides a jig for assisting in manufacturing a fiber fabric as described above, as shown in fig. 3, in an embodiment, the jig 200 may include a main body 201 and a guide mechanism, which may include: a plurality of grooves 202 are formed on the main body 201 at intervals from each other, each groove 202 of the plurality of grooves 202 being curved in a length direction (x direction of fig. 3) to form a curved groove.
The jig 200 may further include binding grooves 203 arranged along a direction (y direction of fig. 3) perpendicular to the length direction of the grooves 202. However, the present disclosure is not limited thereto, and the binding groove 203 having an opening may not be formed, but a closed binding hole (not shown) may be formed as long as the binding wire 102 can be arranged.
When the jig 200 is used to manufacture the fiber fabrics, the grooves 202 on the jig 200 can be used to control and realize the arc arrangement of the axial fiber bundles 101. Specifically, a plurality of axial fiber bundles 101 may be placed in a plurality of grooves 202 of a guide mechanism, respectively, and tension is applied so that the axial fiber bundles 101 take an arc shape to fit the bottoms of the grooves 202; then, the plurality of axial fiber bundles 101 are bound together with the binding wire 102 to form the fiber layer 100. Of course, the above operations may also be repeated to form the multi-layer fibrous layer 100. After the weaving of the fiber fabric is completed, the fiber fabric is taken out from the jig 200, and is wound and packaged.
According to the present disclosure, the jig 200 may be made of a hard material, and when the axial fiber bundle 101 is under tension, the jig 200 is not deformed, thereby ensuring the guiding function thereof.
The jig 200 shown in fig. 3 includes four grooves 202 and three binding grooves 203, the grooves 202 and the binding grooves 203 are arc-shaped grooves, the bottoms of which are arc-shaped, for example, approximately semicircular, and the number of the grooves 202 is the same as the number of the axial fiber bundles 101 to be manufactured, but the present disclosure is not limited thereto, and the number of the grooves 202 and the binding grooves 203 may be selected as needed. In addition, in fig. 3, only grooves 202 extending in the x-direction in the longitudinal direction are shown, and the jig 200 may be used to manufacture a monoaxial fabric. However, the present disclosure is not limited thereto, and as described above, in order to manufacture the axial fiber fabric in different directions, the jig 200 may further include a plurality of guide mechanisms, in which the lengths of the grooves are different, for example, grooves opened in other directions (for example, +45 degrees, -45 degrees, etc. with respect to the x-direction) may be included in addition to the grooves 202 opened in the 0-degree direction in fig. 2. The above-described binding groove 203 may also be used as a groove in which the axial fiber bundle 101 is arranged, according to an embodiment of the present disclosure.
Fig. 2 can be regarded as a plan view of the axial fiber bundles 101 and the binding wires 102 arranged in the jig 200 in fig. 3, the axial fiber bundles 101 being aligned with the grooves 202 and having an arc shape in the length direction of the grooves 202. The plurality of grooves 202 shown in fig. 2 have uniform radians in the length direction, but the present disclosure is not limited thereto, and the plurality of grooves 202 may have different radians in the length direction.
In addition, the groove depth of the groove 202 may be the same in the length direction of the groove 202. However, the present disclosure is not limited thereto, and alternatively, the groove depth of the groove 202 may be different in the length direction of the groove 202, so that the axial fiber bundle 101 disposed in the groove 202 has a certain arc in both the length direction and the height direction, in a three-dimensional curve structure.
In another embodiment, the groove depths of the plurality of grooves 202 may also be different on the same cross section perpendicular to the length direction of the grooves 202, so that the plurality of grooves 202 are also arranged in an arc shape in the width direction. For example, fig. 4 may be regarded as a left side view of fig. 3 (i.e., viewed along the extending direction of the grooves 202), as shown in fig. 4, the groove depths of 8 grooves 202 are different on the same cross section perpendicular to the length direction of the grooves 202, so that after 8 axial fiber bundles 101 are arranged in the 8 grooves 202, they are arranged at intervals along the direction of the broken line having a certain curvature.
For curved structural members, the material directions of parts thereof need to be arranged in a three-dimensional curve direction, for example, as shown in fig. 5, the blade 300 of the wind generating set has a fish-web shape at the blade trailing edge 301 near the maximum chord length thereof, and when laying a monoaxial cloth there, it is necessary to bend (bend) there, and a conventional monoaxial cloth has a linear shape due to included fibers, and there is a problem that the laying operation is difficult where the bending is required, and in addition, there is a problem that the laying of the monoaxial cloth is necessary for the back-swept blade tip and the pre-twisted back-swept blade tip. Here, the swept wing refers to a wing in which both the leading edge and the trailing edge of the blade are swept rearward.
A curved structural member according to an exemplary embodiment of a further aspect of the present disclosure includes a fibrous web as described above, e.g., the curved structural member may have a fibrous web as described above as a skeleton, the fibrous web having an arc matching the curved structural member.
In an embodiment, the curved structural member may be a blade 300 of a wind generating set, where the blade 300 is curved at the trailing edge 301 and the tip sweep 302, that is, where the trailing edge 301 and the tip sweep 302 of the blade 300 form a curved portion, so that the components at the trailing edge 301 and the tip sweep 302 may be made of the fiber fabric as described above, that is, the fiber fabric with the radian structure as described above is laid. When the method is specifically applied to the blade, the fiber fabric can be manufactured by weaving a section of arc fiber fabric and then splicing/transitional to a common unidirectional fabric. According to the present disclosure, the blade is manufactured by adopting the arc-oriented fiber fabric, and has the advantages that: the novel fiber reinforced plastic composite material is convenient to lay, the quality problems of layer folding, inconsistent yarn direction and design, suspended layer, clearance between the surface of the novel fiber reinforced plastic composite material and the surface of a die and the like are not easy to cause, and therefore the structural performance of a product is ensured, and the laying time is shortened.
The fiber fabric according to the embodiments of the present disclosure includes fiber bundles 101 that are curved in at least one direction (e.g., the length direction) and that are capable of three-dimensional follow-up curved laying, when used in curved structural members, to conform more closely to the curved structural members.
The fiber fabric according to the embodiment of the disclosure can be at least applied to the blade of the wind generating set, provides the mechanical strength and rigidity required by the blade, can be matched with the shape of the curved surface part of the blade, has high lamination fit, is free of gaps and is suspended, and the structural performance of the blade is ensured.
The foregoing is merely a preferred embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions (e.g., the features in the different embodiments of the present disclosure may be combined) that are easily conceivable by those skilled in the art within the technical scope of the present disclosure are intended to be included in the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (11)

1. A jig for manufacturing a fiber fabric, characterized in that the jig (200) comprises:
a main body (201); and
A guide mechanism, the guide mechanism comprising: a plurality of grooves (202) formed on the main body (201) at intervals from each other, each of the plurality of grooves (202) being curved in a length direction to form a curved groove, the grooves (202) being different in groove depth in the length direction, the grooves (202) being curved in a width direction of the jig,
The jig (200) further includes: a binding hole or binding groove (203) arranged along a direction perpendicular to a length direction of the groove (202);
the fiber fabric is used for forming a blade of a wind generating set and comprises a fiber layer (100), wherein the fiber layer (100) is composed of a plurality of axial fiber bundles (101) which are arranged at intervals along the width direction of the fiber layer and binding wires (102) which bind the axial fiber bundles (101) together, the axial orientation of the axial fiber bundles (101) is arc-shaped to form the fiber fabric with a three-dimensional arc shape, the fiber fabric with the three-dimensional arc shape can be matched with the blade, and the axial fiber bundles are carbon fiber bundles or glass fiber bundles.
2. The jig according to claim 1, wherein the plurality of grooves (202) differ in radian in the length direction.
3. The jig according to claim 1, characterized in that the groove depths of the plurality of grooves (202) are different on the same cross section perpendicular to the length direction of the grooves (202) so that the plurality of grooves (202) are arranged in an arc shape.
4. The jig according to claim 1, wherein the jig (200) comprises a plurality of guide mechanisms, the grooves (202) of the plurality of guide mechanisms being different in length direction.
5. A method of manufacturing a fiber fabric, characterized in that the jig (200) according to any one of claims 1 to 4 is employed for manufacturing a fiber fabric, the manufacturing method comprising:
placing a plurality of axial fiber bundles (101) in a plurality of grooves (202) of the guide mechanism respectively, and applying tension to enable the axial fiber bundles (101) to be in arc shape and fit with the grooves (202);
The plurality of axial fiber bundles (101) are bound together with binding wires (102) to form the fiber layer (100).
6. A fiber fabric for forming a blade of a wind turbine generator, characterized in that the fiber fabric is manufactured by the manufacturing method of the fiber fabric according to claim 5 using the jig according to any one of claims 1 to 4.
7. The fiber fabric of claim 6, wherein the plurality of axial fiber bundles (101) differ in radian of axial orientation.
8. A fibre fabric according to claim 6, characterized in that the axial fibre bundles (101) are curved in the height direction of the fibre fabric.
9. The fibrous web according to claim 6, characterized in that it comprises a plurality of said fibrous layers (100) superimposed on each other.
10. The fiber fabric according to claim 9, wherein the axial orientation of the axial fiber bundles (101) within adjacent two fiber layers (100) of the plurality of fiber layers (100) is different.
11. A blade for a wind power plant, characterized in that the blade comprises a fibre fabric according to any of claims 6-10.
CN202010997527.1A 2020-09-21 2020-09-21 Fabric, jig and manufacturing method thereof Active CN114248463B (en)

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