CN115369542B

CN115369542B - Threaded woven fiber reinforced rib and weaving method

Info

Publication number: CN115369542B
Application number: CN202211041236.0A
Authority: CN
Inventors: 李昕; 李锡放; 何慧珊; 彭琪帜
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-05-23
Anticipated expiration: 2042-08-29
Also published as: CN115369542A

Abstract

The invention discloses a threaded woven fiber reinforced rib and a weaving method, and relates to the technical field of fiber reinforced rib materials, wherein the threaded woven fiber reinforced rib comprises a reinforced rib body, the reinforced rib body comprises an inner core part, the inner core part comprises a plurality of core tows, and the trend of the core tows is consistent with the axial direction of the reinforced rib body; the warp part comprises a plurality of warp tows, the warp tows are uniformly and densely distributed on the periphery of the inner core part, and the trend of the warp tows is consistent with the axial direction of the reinforcing rib body; and the weft yarn part comprises at least one weft yarn silk bundle, the weft yarn silk bundles are spirally distributed along the peripheral circumference of the inner core part, and the weft yarn silk bundles are interwoven with the warp yarn silk bundles to form a tightly woven interweaved structure, and the tightly woven interweaved structure forms a spiral thread convex part and a spiral thread concave part. The invention makes the screw thread beneficial to anchoring, and improves the transverse strength and the shear strength of the reinforcing rib body.

Description

Threaded woven fiber reinforced rib and weaving method

Technical Field

The invention relates to the technical field of fiber reinforced rib materials, in particular to a threaded woven fiber reinforced rib and a weaving method of the threaded woven fiber reinforced rib.

Background

The fiber reinforced rib, also called FRP rib, has the advantages of light weight, high tensile strength, corrosion resistance, no metal fatigue and the like, and can be used for replacing reinforcing steel bars in constructional engineering. The existing FRP ribs are all pultruded ribs, the reinforced fibers of the FRP ribs are axially distributed, the tensile strength is good, but the transverse extrusion resistance and the shear strength are poor. In addition, the surfaces of the pull agent ribs are smooth and have no protrusions, and the combination bearing capacity with grouting materials in the building is poor; the screw thread is not available, and the anchoring in the pre-stress is inconvenient.

The chinese patent document (application No. 200780052722.X, entitled fiber reinforced bar) well analyzed the importance of the bar and indicated the drawbacks of the two threads of the prior art: (1) Machining screw thread to cut reinforcing fiber and to obtain strength difference; (2) Molded plastic threads, as well as poor strength. The solution of this patent is to bundle the middle longitudinal fibers with two bundles of helically cross-wound fibers such that "a portion of the longitudinal fibers is squeezed and outwardly convex between each wound fiber strip".

It is known that such bulging effect is produced after binding for bulked elastic cotton, wool-like fiber bundles; for reinforcing fibers such as carbon fibers, glass fibers, basalt fibers, no protrusion is generated at all, particularly in a state where the longitudinal fibers are stretched. In addition, the above-mentioned patent specification also states that "normally, the wound fibers can be spaced apart by about 1 to 3 inches in each direction", this dimension being obviously relatively large as the pitch of the threads, and in view of this, this patent proposes a solution which does not solve the technical problem "there is a need in the mining, construction and other industries for a composite rod and nut fastening system having complete thread characteristics without the drawbacks of types (1) and (2) described in the above paragraph.

Disclosure of Invention

The present invention aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the embodiment of the invention provides the threaded woven fiber reinforced rib which is beneficial to anchoring and can improve the transverse strength and the shear strength.

The embodiment of the invention also provides a weaving method of the threaded woven fiber reinforced bar.

According to an embodiment of the first aspect of the present invention, there is provided a threaded woven fibrous reinforcement comprising a reinforcement body comprising an inner core portion comprising a plurality of core tows, the core tows having a trend consistent with the axial direction of the reinforcement body; the warp yarn part comprises a plurality of warp yarn bundles, the warp yarn bundles are uniformly and densely arranged on the periphery of the inner core part, and the trend of the warp yarn bundles is consistent with the axial direction of the reinforcing rib body; and a weft yarn portion including at least one weft yarn tow spirally distributed along a peripheral circumferential direction of the inner core portion, the weft yarn tow being interwoven with the warp yarn tow to form a tightly woven interwoven structure forming spiral thread protrusions and thread recesses.

The woven fiber reinforced rib has at least the following beneficial effects: the surface of the reinforcing rib body is provided with a tightly woven interweaved structure of interweaving warp yarn tows and weft yarn tows, and the tightly woven interweaved structure forms a spiral thread convex part and a spiral thread concave part, so that the combination bearing force with grouting materials can be effectively improved. The reinforced rib body is formed by interweaving continuous reinforced fibers which are tightly combined with the reinforced rib body fibers, can bear great tensile force, can be used for prestress anchoring of the reinforced rib body, and improves transverse strength and shear strength of the reinforced rib body due to circumferential winding fiber distribution.

According to an embodiment of the first aspect of the present invention, the core tows, the warp tows and the weft tows are high-performance composite material fibers, and the high-performance composite material fibers are one or more of carbon fibers, glass fibers, basalt fibers, aramid fibers, ultra-high molecular weight polyethylene fibers, quartz fibers, ceramic fibers and metal fibers.

According to an embodiment of the first aspect of the present invention, the core tows, the warp tows and the weft tows are high-performance composite fibers, and the high-performance composite fibers are one or more of factory filaments, weaving tows and knitting tows.

According to an embodiment of the first aspect of the present invention, the tight woven interweaving weave is one or more of plain weave, twill weave, satin weave, and other desired weaving weaves may be used.

According to one embodiment of the first aspect of the present invention, the weft yarn tows are one, the weft yarn tows are first weft yarn tows, the first weft yarn tows are interwoven with the warp yarn tows to form the tightly woven interwoven structure, the first weft yarn tows and the interwoven warp yarn tows form the thread protruding portions together, and the warp yarn tows between two adjacent thread protruding portions form the thread recessed portions. Further, the warp yarn tows adopt tows with flat cross sections, and the first weft yarn tows adopt tows with circular cross sections.

According to another embodiment of the first aspect of the present invention, the number of the weft yarn tows is two, and the two weft yarn tows are a first weft yarn tow and a second weft yarn tow, respectively, and the first weft yarn tows and the second weft yarn tows are staggered and spirally distributed along the peripheral circumferential direction of the inner core part so as to form the tightly woven interweaved structure; the first weft yarn tows are interwoven with the warp yarn tows to form the threaded bosses; the second weft yarn tows are interwoven with the warp yarn tows to form the threaded concave portions, further, the warp yarn tows adopt tows with flat cross sections, the first weft yarn tows adopt tows with circular cross sections, and the second weft yarn tows adopt tows with flat cross sections.

According to an embodiment of the second aspect of the present invention, there is provided a method for weaving a threaded woven fiber reinforced bar according to the embodiment of the first aspect of the present invention, comprising the steps of:

s1, loading: the yarn is supplied to the core yarn bundles and the warp yarn bundles by adopting a yarn frame with tension control, the yarn frames are uniformly distributed along the circumference, the core yarn bundles are directly introduced into a fabric traction device for fixation, and the warp yarn bundles pass through heald eyes of healds controlled by an electronic jacquard opening device and are introduced into the fabric traction device for fixation; more than two electronic jacquard opening devices which can be independently driven are uniformly distributed along the circumference, so that more than two subarea openings can be realized; the first weft yarn filament bundle is wound on a cop tube and put into a shuttle, the shuttle is a shuttle car capable of moving on a shuttle channel, and the shuttle is put on the zoned edge of the shuttle channel;

s2, starting: the loom realizes the zoned opening-weft insertion-closing-beating-traction in sequence; from the top view of the loom, the shuttle moves counterclockwise to weave the positive thread or moves clockwise to weave the negative thread;

s3, the fabric traction device is matched with the movement of the shuttle: the shuttle completes a circle, and the fabric traction device completes the traction amount of a thread pitch d;

s4, executing the step S2 in a circulating way.

The weaving method of the threaded woven fiber reinforced bar has at least the following beneficial effects: by single-shuttle weaving of one weft yarn, a woven fiber reinforced rib with weft yarn interweaving threads can be woven, and interweaving of weft yarn tows and warp yarn tows not only forms spiral thread convex parts and thread concave parts, but also improves transverse strength and shear strength of the rib due to the existence of circumferential fiber distribution.

According to an embodiment of the third aspect of the present invention, there is provided a method for weaving a threaded woven fiber reinforced bar according to the embodiment of the first aspect of the present invention, comprising the steps of:

s1, loading: the yarn is supplied to the core yarn bundles and the warp yarn bundles by adopting a yarn frame with tension control, the yarn frames are uniformly distributed along the circumference, the core yarn bundles are directly introduced into a fabric traction device for fixation, and the warp yarn bundles pass through heald eyes of healds controlled by an electronic jacquard opening device and are introduced into the fabric traction device for fixation; the four or more even-numbered electronic jacquard opening devices which can be independently driven are uniformly distributed along the circumference, so that four or more even-numbered partition openings can be realized; winding the first weft yarn filament bundle on a first cop tube and placing a first shuttle which is a shuttle car capable of moving on a shuttle channel; winding the second weft yarn bundle on the second cop tube and placing a second shuttle which is a shuttle car capable of moving on the shuttle race; the first shuttle and the second shuttle are respectively placed on two opposite partition edges on the shuttle race, and the partition circumference of the partition where the first shuttle is placed and the partition circumference of the partition where the second shuttle is placed are 180 degrees out of phase;

s2, starting: the loom realizes the zoned opening-weft insertion-closing-beating-traction in sequence; from a top view of the loom, the first shuttle and the second shuttle move counterclockwise to weave positive threads or clockwise to weave negative threads;

s3, the fabric traction device is matched with the movement of the first shuttle and the second shuttle: the first shuttle or the second shuttle completes a circle, and the fabric traction device completes the traction amount of a thread pitch d;

s4, executing the step S2 in a circulating way.

The weaving method of the threaded woven fiber reinforced bar has at least the following beneficial effects: by carrying out double-shuttle weaving on two weft yarn tows, the two weft yarn tows need to run simultaneously by the first shuttle and the second shuttle, and the phase difference of the double shuttles is 180 degrees, so that the woven fiber reinforced rib with the interweaved threads of the two weft yarn tows can be woven, the interweaved weft yarn tows and the warp yarn tows not only form spiral thread convex parts and thread concave parts, but also improve the transverse strength and the shear strength of the rib due to the existence of circumferential fiber distribution.

Drawings

The invention is further described below with reference to the drawings and examples;

FIG. 1 is a perspective view of a first construction of a threaded woven fiber reinforcement according to an embodiment of the invention;

FIG. 2 is a schematic illustration of a single-shuttle weaving process for a circular loom;

FIG. 3 is a timing diagram of a single shuttle operation four partition opening;

FIG. 4 is a perspective view of a second construction of a threaded woven fiber reinforcement according to an embodiment of the invention;

FIG. 5 is a schematic diagram of a double-shuttle weaving process for a circular loom;

FIG. 6 is a timing diagram of a two-shuttle run octal opening.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 4, a threaded woven fiber reinforcement is shown comprising a reinforcement body including an inner core portion, a warp portion, and a weft portion.

The inner core portion includes a plurality of core tows 111, the core tows 111 having a trend consistent with the axial direction of the reinforcement body.

The warp yarn part comprises a plurality of warp yarn tows 121, the warp yarn tows 121 are uniformly and densely arranged on the periphery circumference of the inner core part, and the trend of the warp yarn tows 121 is consistent with the axial direction of the reinforcing rib body.

The weft portion includes at least one weft yarn strand spirally distributed along the outer circumference of the inner core portion, the weft yarn strands being interwoven with the warp yarn strands 121 to form a tightly woven interwoven structure forming spiral threaded protrusions 141 and threaded recesses 142.

Those skilled in the art will appreciate that conventional methods of making woven fiber reinforcement generally include "fiber preform making" and "impregnating, filling, curing of the base material", and that the present embodiment is directed primarily to improvements in the "fiber preform making" section. The "soaking, filling and curing of base material" part is that the woven fiber reinforced rib is obtained by soaking, filling and curing of the base material, wherein the base material is one or a mixture of a plurality of polymer materials, metal materials and ceramic materials.

In some embodiments, the tightly woven weave is one or a mixture of plain weave, twill weave, satin weave, although other desired weaves may be used.

Wherein the core tows, the warp tows and the weft tows adopt high-performance composite material fibers, and the high-performance composite material fibers are one or a mixture of a plurality of carbon fibers, glass fibers, basalt fibers, aramid fibers, ultra-high molecular weight polyethylene fibers, quartz fibers, ceramic fibers and metal fibers.

It will be appreciated that in applications where high performance composite fibers such as carbon fibers, glass fibers, basalt fibers, etc. are used, although they have high strength characteristics, it is difficult to machine threads and combine them with grouting materials. In the embodiment of the invention, the surface of the reinforcing rib body is provided with the tightly woven interweaved structure of interweaving the warp yarn tows 121 and the weft yarn tows, and the tightly woven interweaved structure forms the spiral thread convex part and the spiral thread concave part, so that the combination bearing force with the grouting material can be effectively improved. The reinforced rib body is formed by interweaving continuous reinforced fibers which are tightly combined with the reinforced rib body fibers, can bear great tensile force, can be used for prestress anchoring of the reinforced rib body, and improves transverse strength and shear strength of the reinforced rib body due to circumferential winding fiber distribution.

The core tows, the warp tows and the weft tows adopt high-performance composite material fibers, and the high-performance composite material fibers are one or a mixture of more of delivery raw filaments, weaving processing tows and knitting processing tows.

Referring to fig. 1, a first construction of a threaded woven fiber reinforcement is shown.

Specifically, the weft yarn tows are one, the weft yarn tows are first weft yarn tows 131, and the first weft yarn tows 131 are interwoven with the warp yarn tows 121 to form a tightly woven interweaving structure.

The tightly woven weave pattern shown in fig. 1 is a plain weave pattern, specifically, formed by warp yarn bundles 121 interweaving with first weft yarn bundles 131 one above the other; the interweaving of warp yarn strands 121 with first weft yarn strands 131 collectively forms a threaded protrusion 141, and warp yarn strands 121 between adjacent two threaded protrusions 141 form a threaded recess 142. One skilled in the art can design the particular manner of interweaving warp yarn strands 121 with first weft yarn strands 131 in specifically designing the first construction of the threaded woven fiber reinforcement.

Warp yarn strands 121 are flat-cross-section strands, first weft yarn strands 131 are circular-cross-section strands, and the shapes of warp yarn strands 121 and first weft yarn strands 131 are selected to enhance the relief effect of a tightly woven weave pattern.

In actual weaving, because warp yarn bundles 121 are woven with a large tension, fibers tend to be more spread out in the portions of warp yarn bundles 121 that are formed on threaded protrusions 141.

In fig. 1, the left end of the first weft yarn strand 131 is the starting end, and it can be seen that the weft insertion path rotates counterclockwise along the circumference, and the traction device moves axially while inserting weft, and the traction displacement amount of one circle of weft insertion is a thread pitch d, so that the positive thread is woven. Conversely, if the weft insertion path is rotated clockwise, the reverse thread may be woven.

Fig. 2 is a schematic drawing of a single-shuttle weaving process of a circular loom, which is a top view of the loom. In the figure, four electronic jacquard shedding devices 210 are circumferentially distributed, the number sequence is anticlockwise, and the four electronic jacquard shedding devices 210 are respectively a No. 1 electronic jacquard shedding device 211, a No. 2 electronic jacquard shedding device 212, a No. 3 electronic jacquard shedding device 213 and a No. 4 electronic jacquard shedding device 214. The circumference angle partition line 251 is divided, the whole ring is divided into four opening partitions, the partition numbers of the four opening partitions correspond to the electronic jacquard opening devices, namely, the number 1 electronic jacquard opening device 211 corresponds to the 1 partition, and the rest are analogized.

The electronic jacquard opening devices are all opening devices with independent electric drive, and can realize independent partition openings; although it is theoretically possible to achieve alternate continuous weaving with two partitions (i.e., an open area and a closed area), it takes time for the electronic jacquard opening device to move from the open state to the closed state, and four partitions are better in engineering, i.e., a transition area is provided between the open area and the closed area; the partition openings are beneficial to continuous movement of the shuttle car on the circular shed, and can also support multi-shuttle weaving; for zoned openings and multi-shuttle weaving, see chinese patent application No. 201710225077.2, entitled wave pattern opening device for a large weaving system.

The axial yarns of the fabric are provided by adopting creels with tension control, the creels are circumferentially distributed at the periphery of the loom (the creels are not drawn in the figure), the axial yarns of the fabric comprise core tows 111 and warp tows 121, the core tows do not participate in interweaving, and are directly introduced into the fabric traction device 241 for fixation, and the warp tows 121 are introduced into the fabric traction device 241 for fixation through heald eyes of jacquard healds.

The shed 231 may be a reed type circular shed, and the shuttle 220 moves over the shed 231, the shuttle 220 being indicated by S in fig. 2, and the shuttle 220 typically being a powered shuttle car. Circumferentially distributed axial yarns, comprising core tows 111 and warp tows 121, are all gathered in and fixed and pulled by a fabric pulling device 241, since the creel responsible for supplying the yarns is provided with tension control, the tension of the axial yarns is constituted between the creel and the fabric pulling device 241. In order to weave high density fiber strands, a higher tension should be used. The shuttle 220 is moved circumferentially along the endless shed 231 so that the weft yarn tows form a wrap bind for the axial yarn tows, also requiring a greater weft tension to be maintained to increase the fiber density of the ribs.

FIG. 3 is a timing diagram of a single shuttle operation four-partition opening, four partitions being sequentially arranged from left to right, with partition labels below; the high horizontal line represents the open area, the low horizontal line represents the closed area, and the middle horizontal line represents the transition area; the left side is an angular zone, e.g., 0-90 zone, zone 1 is an open zone, and shuttle 220 is zone 1; and so on. The weaving process for one revolution of the shuttle can be seen from the timing diagram.

Referring to fig. 2 and 3, in this embodiment, a method for weaving a threaded woven fiber reinforced rib for weaving the threaded woven fiber reinforced rib of the single weft yarn filament bundle is also shown, comprising the steps of:

s1, loading: the core tows 111 and the warp tows 121 are fed by adopting a creel with tension control, the creels are uniformly distributed along the circumference, the core tows 111 are directly introduced into a fabric traction device 241 for fixation, and the warp tows 121 penetrate through heald eyes of healds controlled by an electronic jacquard shedding device for fixation;

more than two electronic jacquard opening devices 210 which can be independently driven are uniformly distributed along the circumference, so that more than two subarea openings can be realized;

the first weft yarn bundle 131 is wound around the cop tube inserting shuttle 220, the shuttle 220 is a shuttle car movable on the shed 231, and the shuttle 220 is placed on the partition edge of the shed 231;

s2, starting: the loom realizes the zoned opening-weft insertion-closing-beating-traction in sequence; from a top view of the loom, the shuttle 220 moves counterclockwise to weave a positive thread or clockwise to weave a negative thread;

s3, the fabric traction device 241 cooperates with the movement of the shuttle 220: shuttle 220 completes a circle and fabric pulling device 241 completes the amount of pull of one pitch d;

s4, executing the step S2 in a circulating way.

Referring to fig. 4, a second construction of a threaded woven fiber reinforcement is shown.

Specifically, two weft yarn tows are respectively a first weft yarn tow 131 and a second weft yarn tow 132, and the two weft yarn tows are staggered and spirally distributed along the peripheral circumferential direction of the inner core part so as to form a tightly woven interweaved structure.

The first weft yarn strands 131 are interwoven with the warp yarn strands to form the threaded bosses 141. As shown in fig. 4, the warp yarn bundles 121 are interwoven with the first weft yarn bundles 131 in a top-bottom four manner, and the two yarn bundles together form a thread protrusion 141; in other embodiments, warp yarn bundles 121 may be interwoven with first weft yarn bundles 131 to form threaded protrusions 141 in a five-over-one, six-over-one, etc. manner. Warp yarn bundles 121 are flat-shaped in cross section, and first weft yarn bundles 131 are circular-shaped in cross section, so that the protruding effect of thread protrusions 141 of the tightly woven and interwoven structure can be further enhanced. Of course, warp yarn strands 121 and first weft yarn strands 131 may take other cross-sectional strands, for example first weft yarn strands 131 may take oval cross-sectional strands.

The second weft strands 132 interweave with the warp strands to form threaded recesses 142. As shown in fig. 4, warp yarn bundles 121 interweave with second weft yarn bundles 132 in a four next-to-one fashion, both together forming thread recesses 142; in other embodiments, warp yarn bundles 121 may be woven with the second weft yarn bundles 132 to form threaded recesses 142 in a five next up, six next up, etc. Warp yarn bundles 121 are flat-cross-section bundles, and second weft yarn bundles 132 are flat-cross-section bundles, which further enhances the sinking effect of thread recesses 142 of the tightly woven weave pattern.

The threaded woven fiber reinforced ribs of the two structures are compared as follows:

in the threaded woven fiber reinforced rib of the double weft yarn tows, the purpose of arranging the two weft yarn tows is as follows: in the threaded recess, winding with the second weft yarn filament bundle can create a force pressing the warp yarn filament bundle downward (i.e., toward the inside), which is a holding force, and a flat recess can be obtained.

In the threaded woven fiber reinforced rib of one weft yarn strand, the threaded concave portions are formed by intersecting the inclined warp yarn strands, and when the warp yarn strands are axially tensioned, the inclined warp yarn strands have upward (i.e., outward) force, which is a separating force, which is not good. The ratio of the concave-convex of the thread is not large, because the higher the convex of the thread is, the more the warp yarn bundles at the concave position of the thread are inclined, and the rise is also followed.

By adopting the weaving scheme of two weft yarn tows, the weaving thread has better external force bearing property, but has higher requirements on weaving equipment and weaving process, preferably eight electronic jacquard opening devices which are independently driven are used for realizing circumferential octant opening, so that the continuous operation of two shuttles can be simultaneously accommodated, and the weaving thread of the two weft yarn tows is woven.

Specifically, as shown in fig. 4, the left ends of the first weft yarn filament bundle 131 and the second weft yarn filament bundle 132 are the starting ends, and it can be seen that the weft insertion path rotates counterclockwise along the circumference, and the traction device axially displaces while weft is inserted, and the traction displacement amount of one circle of weft insertion is a thread pitch d, so that the positive thread is woven. Conversely, if the weft insertion path is rotated clockwise, the reverse thread may be woven. The second weft yarn strand 132 is spaced from the first weft yarn strand 131 by a half pitch, which is 180 degrees out of circumferential phase for a circular motion shuttle, so that the two shuttles always run on opposite side zones (180 degrees out of phase) during weaving.

Fig. 5 is a schematic drawing of a double-shuttle weaving of a circular loom, which is a top view of the loom. In the figure, eight electronic jacquard shedding devices 210 are circumferentially distributed, the number sequence is anticlockwise, and the eight electronic jacquard shedding devices 210 are respectively an electronic jacquard shedding device No. 1 211, an electronic jacquard shedding device No. 2, an electronic jacquard shedding device No. 3, an electronic jacquard shedding device No. 213, an electronic jacquard shedding device No. 4, an electronic jacquard shedding device No. 5, an electronic jacquard shedding device No. 215, an electronic jacquard shedding device No. 6, an electronic jacquard shedding device No. 216, an electronic jacquard shedding device No. 7, an electronic jacquard shedding device No. 217 and an electronic jacquard shedding device No. 8 218. The circumference angle partition line 251 is divided, the whole circular ring is divided into eight opening partitions, the partition numbers of the eight opening partitions correspond to the electronic jacquard opening devices, namely, the number 1 electronic jacquard opening device 211 corresponds to the 1 partition, and the rest are analogized.

The electronic jacquard opening devices are all opening devices with independent electric drive, and can realize independent partition openings; the axial yarns of the fabric are provided by using yarn frames with tension control, the yarn frames are circumferentially distributed on the periphery of the loom (not shown in the figure), the axial yarns of the fabric comprise core tows 111 and warp tows 121, the core tows do not participate in interweaving, and are directly introduced into the fabric traction device 241 for fixation, and the warp tows 121 are introduced into the fabric traction device 241 for fixation through heald eyes of jacquard healds.

The shed 231 may be a reed type circular shed, on which shed 231 the first 221 and second 222 shuttles, indicated by S1 in fig. 5 as first 221 and S2 as second 222, the first 221 and second 222 shuttles being powered shuttles, respectively. In fig. 5, the first shuttle 221 is at a 1-zone edge, the second shuttle 222 is at a 5-zone edge, the first shuttle 221 is split on opposite sides of the second shuttle 222, 180 degrees out of phase. As shown in FIG. 5, the electronic jacquard shedding device 211 corresponds to the 1 partition, and the electronic jacquard shedding device 215 corresponds to the 5 partition.

Circumferentially distributed axial yarns, comprising core tows 111 and warp tows 121, are all gathered in and fixed and pulled by a fabric pulling device 241, since the creel responsible for supplying the yarns is provided with tension control, the tension of the axial yarns is constituted between the creel and the fabric pulling device 241. In order to weave high density fiber strands, a higher tension should be used. The first shuttle 221 and the second shuttle 222 are moved circumferentially along the endless shed 231.

FIG. 6 is a schematic diagram of an eight-partition opening for a double-shuttle operation, eight partitions being sequentially arranged from left to right, with partition numbers below; the high horizontal line represents the open area, the low horizontal line represents the closed area, and the middle horizontal line represents the transition area; the left side is an angular zone, e.g., 0-45 ° zone,

zones

1 and 5 are open zones, the first shuttle 221 is in zone 1, the second shuttle 222 is in zone 5; and so on. The weaving process of one double-shuttle motion can be seen from the timing diagram.

Referring to fig. 5 and 6, in this embodiment, a method for weaving a threaded woven fiber reinforced bar for weaving the threaded woven fiber reinforced bar of the double weft yarn bundles is also shown, comprising the steps of:

s1, loading: the core tows 111 and the warp tows 121 are fed by adopting a creel with tension control, the creels are uniformly distributed along the circumference, the core tows 111 are directly introduced into a fabric traction device 241 for fixation, and the warp tows 121 penetrate through heald eyes of healds controlled by an electronic jacquard shedding device for fixation; four or more even-numbered electronic jacquard opening devices 210 which can be independently driven are uniformly distributed along the circumference, and four or more even-numbered partition openings can be realized; the first weft yarn bundle 131 is wound around the first pirn tube and is put into the first shuttle 221, and the first shuttle 221 is a shuttle car movable on the shed; the second weft yarn bundle 132 is wound around the second quill and placed into the second shuttle 222, the second shuttle 222 being a shuttle car movable over the shed 231; the first shuttle 221 and the second shuttle 222 are respectively placed at two opposite partition edges on the shed, the partition circumference of the partition where the first shuttle is placed and the partition circumference of the partition where the second shuttle is placed are 180 degrees out of phase, and referring to fig. 5 and 6, the first shuttle 221 is placed at the 1 partition edge and the second shuttle 222 is placed at the 5 partition edge;

s2, starting: the loom realizes the zoned opening-weft insertion-closing-beating-traction in sequence; from a top view of the loom, the first shuttle 221 and the second shuttle 222 move counterclockwise to weave a positive thread or move clockwise to weave a negative thread;

s3, the fabric traction device 241 cooperates with the movements of the first shuttle 221 and the second shuttle 222: the first shuttle 221 and the second shuttle 222 complete a circumference, and the fabric pulling device 241 completes the pulling amount of one thread pitch d;

s4, executing the step S2 in a circulating way.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims

1. A threaded woven fiber reinforcement, characterized by: comprises a reinforcing rib body, wherein the reinforcing rib body comprises

An inner core portion comprising a plurality of core tows, the core tows having a trend consistent with the axial direction of the reinforcement body;

the warp yarn part comprises a plurality of warp yarn bundles, the warp yarn bundles are uniformly and densely arranged on the periphery of the inner core part, and the trend of the warp yarn bundles is consistent with the axial direction of the reinforcing rib body; and

and the weft yarn part comprises at least one weft yarn silk bundle, the weft yarn silk bundles are spirally distributed along the peripheral circumference of the inner core part, the weft yarn silk bundles are interwoven with the warp yarn silk bundles to form a tightly woven interweaved structure, and the tightly woven interweaved structure forms spiral thread convex parts and thread concave parts.

2. The threaded woven fiber reinforcement of claim 1, wherein: the core tows, the warp tows and the weft tows adopt high-performance composite material fibers, and the high-performance composite material fibers are one or a mixture of more of carbon fibers, glass fibers, basalt fibers, aramid fibers, ultra-high molecular weight polyethylene fibers, quartz fibers, ceramic fibers and metal fibers.

3. The threaded woven fiber reinforcement of claim 1, wherein: the core tows, the warp tows and the weft tows adopt high-performance composite material fibers, and the high-performance composite material fibers are one or a mixture of more of delivery raw filaments, weaving processing tows and knitting processing tows.

4. The threaded woven fiber reinforcement of claim 1, wherein: the tight woven interweaving weave is one or more of plain weave, twill weave and satin weave.

5. A threaded woven fibre reinforced bar according to any one of claims 1 to 4, wherein: the weft yarn tows are one, the weft yarn tows are first weft yarn tows, the first weft yarn tows are interwoven with the warp yarn tows to form the tightly woven interweaved structure, the first weft yarn tows and the interweaved warp yarn tows form the thread convex parts together, and the warp yarn tows between two adjacent thread convex parts form the thread concave parts.

6. The threaded woven fiber reinforcement of claim 5, wherein: the warp yarn tows adopt tows with flat cross sections, and the first weft yarn tows adopt tows with circular cross sections.

7. A threaded woven fibre reinforced bar according to any one of claims 1 to 4, wherein: the number of the weft yarn tows is two, the two weft yarn tows are respectively a first weft yarn tow and a second weft yarn tow, and the first weft yarn tows and the second weft yarn tows are staggered and spirally distributed along the peripheral circumference of the inner core part so as to form the tightly woven interweaved tissue;

the first weft yarn tows are interwoven with the warp yarn tows to form the threaded bosses;

the second weft yarn tows are interwoven with the warp yarn tows to form the threaded recess.

8. The threaded woven fiber reinforcement of claim 7, wherein: the warp yarn tows adopt tows with flat cross sections, the first weft yarn tows adopt tows with circular cross sections, and the second weft yarn tows adopt tows with flat cross sections.

9. A method of weaving a threaded woven fiber reinforced bar as claimed in claim 5 or 6, comprising the steps of:

s1, loading: the yarn is supplied to the core yarn bundles and the warp yarn bundles by adopting a yarn frame with tension control, the yarn frames are uniformly distributed along the circumference, the core yarn bundles are directly introduced into a fabric traction device for fixation, and the warp yarn bundles pass through heald eyes of healds controlled by an electronic jacquard opening device and are introduced into the fabric traction device for fixation;

more than two electronic jacquard opening devices which can be independently driven are uniformly distributed along the circumference, so that more than two subarea openings can be realized;

the first weft yarn filament bundle is wound on a cop tube and put into a shuttle, the shuttle is a shuttle car capable of moving on a shuttle channel, and the shuttle is put on the zoned edge of the shuttle channel;

s4, executing the step S2 in a circulating way.

10. A method of weaving a threaded woven fiber reinforced bar as claimed in claim 7 or 8, comprising the steps of:

s4, executing the step S2 in a circulating way.