CN102505336A - Preparation method of performing body with extendable cross section dimension - Google Patents
Preparation method of performing body with extendable cross section dimension Download PDFInfo
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- CN102505336A CN102505336A CN2011103411844A CN201110341184A CN102505336A CN 102505336 A CN102505336 A CN 102505336A CN 2011103411844 A CN2011103411844 A CN 2011103411844A CN 201110341184 A CN201110341184 A CN 201110341184A CN 102505336 A CN102505336 A CN 102505336A
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Abstract
The invention relates to a preparation method of a performing body with extendable cross section dimension. According to the method, a three-dimensional multidirectional structure is adopted, and the performing body with the extendable cross section dimension is prepared through fiber beam throwing-out and planting, so the problem that the dimension of the vertical center line is limited by the equipment volume in the existing three-dimensional weaving performing body preparation method is solved. The preparation method has the advantages that on the premise of not increasing the weaving equipment volume, the dimension of the direction vertical to the weaving axis is approximately and exponentially widened, the application of a three-dimensional weaving structure to a large-dimension component becomes possible, yarns in the prepared integrally connected performing body are complete and continuous, the mechanical property of the yarns is favorably and fully exerted, and the yarns can be applied to structural compound materials with higher mechanical property requirements. The reparation method can be used for preparing the performing body with the extendable cross section dimension, and the application of the three-dimensional weaving performing body onto the larger-area structure component is widened.
Description
Technical field
The present invention relates to the extendible preform preparation method of a kind of sectional dimension, belong to fortifying fibre and knitting skill field.
Background technology
The 3 D weaving equipment structural designs of taking the motion of yarn device determinant that adopt, shaped fibers provides by taking the yarn device more.The 3 D weaving place capacity is promptly taken yarn device quantity and is taken yarn device size restrictions, can only limit within the specific limits, and this just makes the three dimensional knitted product size be restricted, and has hindered application.
Though woven 2.5D can the relatively large product of preparation size (particularly width), its structure is that adjacent layer links to each other in twos, and the interlayer mechanical property is excellent not as 3 D weaving, therefore, uses in the structural composite material field and to be very limited.
In order to improve the three dimensional knitted product size, expand of the application of 3 D weaving technology at structural composite material, invented this preparation method.
Summary of the invention
The technical problem that the present invention will solve is exactly the problem that the size of vertical center line direction among the existing 3 D weaving preform preparation method receives the place capacity restriction; Propose a kind of employing 3 D multi-directional structure, prepare the method that sectional dimension can be expanded preform through " throwing away-implant " fibre bundle.
Sectional dimension of the present invention is extendible preform preparation method comprise the steps:
1) square machine (6-1,6-2,6-3,6-4,6-5,6-6) is distributed by square circular symmetric;
2) knit planar I by 3 D multi-directional square plate weaving for establishment and do following the preparation:
Prepare the parent yarn (1) of respective sets number by the ranks number of design, the two ends of every group of parent yarn are respectively fixed to taking on the yarn device of symmetrically arranged side's machine (6-1), (6-2);
Total group of number of aforementioned parent yarn=take yarn device line number * columns;
Every group of parent yarn is folded yarn, and being pooled capital naturally by the n thigh kind single-stranded fiber identical with fineness forms aforementioned n >=2; The side of being separately fixed at, parent yarn two ends machine (6-1), identical the taking on the yarn device of (6-2) ranks sequence number;
3) be starting point with the long mid point of parent yarn yarn; Press the first half of first direction (5) preparation planar I; Take machine cycles of the every motion of yarn device; The fibre bundle (7-1) of taking two pairs of entrained parent yarns difference " throwing away " identical number of share of stocks of yarn device corresponding in square machine (6-1) limit, left and right sides outer most edge (3) zone with two side positions (2) of corresponding preform planar I; Aforementioned parent yarn (1) outside, prepare in addition the new yarn of respective sets number, times get wherein two groups (8-1,8-2), with the end " implantation " of first group (8-1) behind aforementioned " throwing away " fibre bundle in the remaining parent yarn (7-2); And be fixed to fixing the taking on the yarn device of former parent yarn (1) after pooling capital naturally with it; The other end wouldn't be fixed, again with second group of new yarn (8-2) from the long mid point of its yarn (4) doubling, the fibre bundle (7-1) that unroll along " throwing away " position of aforementioned parent yarn (1) fixing back one end and this parent yarn (1) " throw away " is plied to one group of yarn naturally; The other end and first group of new yarn (8-1) a loose end temporarily are plied to another group yarn naturally; According to the yarn of " position nearby, weaving direction consistent " with regard to method for position, the taking on the yarn device of the yarn side of the being fixed to machine (6-3) that the planar I left side forms through " throwing away-implants " fibre bundle after, participation is woven by the square circular device that square machine (6-1,6-2,6-3) is combined into; Taking on the yarn device of the yarn side of the being fixed to machine (6-4) that the planar I right side forms behind " throwing away-implant " fibre bundle is as the initial yarn (1) of follow-up braiding extent plane V reservation;
The fibre bundle number of share of stock of " throwing away " and " implantation " equates on aforementioned every group of parent yarn;
An aforementioned machine cycles is meant that taking the yarn device accomplishes complete four a walkings row motion, forms the preform of a stitch length on weaving direction;
4) repeating step 3) until the length dimension that reaches the planar I first half, accomplish the braiding of planar I first half;
5) according to step 2) latter half of to the identical prepared planar I of step 4); Difference is that the fixing square machine of yarn changes; Yarn among the preparation technology of aforementioned planar I first half on the side's of being fixed to machine (6-1) all changes on the side's of being fixed to machine (6-2); Its ranks fixed position and square machine (6-1) are minute surface symmetrical distribution (the initial weaving thread with the planar I first half is an axis); The side's of being fixed to machine (6-3) among the preparation technology of aforementioned planar I first half, the both sides yarn that (6-4) is adjacent with square machine (6-1) with regard to method for position, change the side's of being fixed to machine (6-3), (6-4) and the adjacent both sides of square machine (6-2) according to the yarn of " position nearby, weaving direction consistent " into; All the other are all with step 2) to step 4), reach the braiding of promptly accomplishing planar I behind the length dimension of planar I;
6) carry out integral weaving to square machine (6-1,6-2, the 6-3) side's of being combined into circular device; Take the yarn device by four step rule side's annular regular movement; All take the yarn device machine cycles of having moved; Take the method identical with step 3) " to throw away-implant " fibre bundle at square machine (6-1), (6-2) with the non-conterminous dual-side of square machine (6-3), repetitive cycling is until the braiding of accomplishing planar I I, III, IV, and two vertical seamed edge (a of formation cube A
1a
1', a
2a
2'), reserve yarn (1 simultaneously for weaving extent plane VI and VII thereafter
YL) (this yarn has two groups of yarns integrated: first group of yarn is the end (7-1) that " throws away " of parent yarn (1) and the formation afterwards of pool capital naturally of an end of new yarn (8-2); Second group of yarn is end and the other end of new yarn (8-2) of " implantation " formation afterwards of pool capital naturally of new yarn (8-1)), so far accomplished the braiding of cube A;
7) serve as the braiding starting point with planar I and planar I I, III, the non-conterminous side of IV again; By second direction (11) woven flat V; Take machine cycles of the every motion of yarn device; The fibre bundle (7-1 ') of taking entrained two pairs of parent yarns (1 ') difference " throwing away " the identical number of share of stock of yarn device corresponding in square machine (6-4) limit, left and right sides outer most edge (3 ') zone with two side positions (2 ') of preform planar I; Outside aforementioned parent yarn (1 '), prepare the new yarn of respective sets number in addition; Appoint and to get wherein two groups (8-1 '), (8-2 '), the end " implantations " of first group (8-1 ') behind aforementioned " throwing away " fibre bundle in the remaining parent yarn (7-2 '), and is fixed to taking on the yarn device that former parent yarn (1 ') fixes after pooling capital naturally with it; The other end wouldn't be fixed; Again second group of new yarn (8-2 ') located doubling at the long mid point (4 ') of its yarn, the fibre bundle (7-1 ') that unroll along " throwing away " position of aforementioned parent yarn (1 ') fixing back one end and this parent yarn (1 ') " throw away " is plied to one group of yarn naturally, and the other end and first group of new yarn (8-1 ') a loose end temporarily are plied to another group yarn naturally; According to the yarn of " position nearby, weaving direction consistent " with regard to method for position, the taking on the yarn device of the yarn side of the being fixed to machine (6-5) that V left side in plane forms behind " throwing away-implant " fibre bundle; Taking on the yarn device of the yarn side of the being fixed to machine (6-6) that V right side, plane forms behind " throwing away-implant " fibre bundle;
The aforementioned new yarn of preparing in addition (8-1,8-2) and (8-1 ', 8-2 '), it always organizes number is respectively parent yarn (1) and (1 ') 2 times before " throwing away " fibre bundle, fineness is half of parent yarn (1);
8) carry out integral weaving to square machine (6-4,6-5, the 6-6) side's of being combined into circular device, take the yarn device, all take the yarn device machine cycles of having moved, just two vertical seamed edges in the step 6) by four step rule side's annular weaving regular movement
(a
1a
1', a
2a
2') the last yarn of reserving (1
YL), by its erect-position sequencing from high to low, inweave successively in the current braiding yarn, promptly the current reservation yarn (1 that will inweave
YL) the pairing motion motion of taking the yarn device side of being put into machine (6-5,6-6) takes the yarn device and introduce district (13), makes its motion of participating in next machine cycles, circulate successively up to two vertical seamed edge (a
1a
1', a
2a
2') the last yarn of reserving (1
YL) all inweave, accomplish the braiding of plane VI, VII, and form two vertical seamed edge (b of cube B
1b
1', b
2b
2'), simultaneously from two vertical seamed edge (b of cube B
1b
1', b
2b
2') in shift out and aforementioned reservation yarn (1
YL) the identical yarn of group number, yarn (1 ") that this part yarn cuts off at last or the next cube of conduct expansion is reserved.
An aforementioned machine cycles is meant takes the four steps motion that the yarn device is accomplished the ranks direction, on weaving direction, forms the preform of a mother to stitch length.
Total group of number of aforementioned parent yarn=take yarn device line number * columns;
Every group of parent yarn is folded yarn, and being pooled capital naturally by the n thigh kind single-stranded fiber identical with fineness forms (n >=2); The side of being separately fixed at, parent yarn two ends machine 6-1, identical the taking on the yarn device of 6-2 ranks sequence number;
Aforementioned mother to stitch length unit is: mm/10 flower joint.
Above-mentioned " throwing away " fibre bundle technology is only to 3 D weaving technology; Being fixed on the parent yarn of taking on the yarn device is folded yarn (number of share of stock >=2); Take machine cycles of the every motion of yarn device; From the parent yarn, select the fibre bundle (confirming) of certain number of share of stock according to design, let it break away from former parent yarn fixing take the yarn device, this technical process is referred to as " throwing away ".
Above-mentioned " implantation " fibre bundle technology is the inverse process of " throwing away "; After " throwing away the fibre bundle of certain number of share of stock "; Outside former parent yarn, fill the new yarn with " throwing away " fibre bundle equivalent again, to reach the fineness balance, this technical process is referred to as " implantation ".
Aforementioned every group of parent yarn " throws away " number of share of stock of fibre bundle first, by confirming original the composition with the convenience of " throwing away-implant " technological operation of parent yarn fibers bundle; The number of share of stock of every group of each " throwing away " fibre bundle of parent yarn can be set at n-1 (n >=2), and the number of share of stock of each " implantation " fibre bundle also can be set at n-1 (n >=2).
The aforementioned new yarn 8-1 for preparing in addition, 8-2 (or 8-1 ', 8-2 '), it always organizes number is 2 times of parent yarn 1 (or 1 ') before " throwing away " fibre bundle, fineness then is the half the of its.
The preform of the present invention's preparation is solid or the hollow cubic body of liner core.
Adopting the present invention to carry out the preform braiding uses yarn to be carbon fiber, glass fibre, quartz fibre, high silica fiber, polyethylene fiber, aramid fiber or metal fibre.
It is square that aforementioned side's machine is meant that the chassis of 3 D weaving equipment is shaped as, and is prior art, and what this side's machine was taken the yarn device is designed with row-column configuration and two kinds of patterns of horn ring structure, and what the present invention adopted is the square machine of row-column configuration.
The preform of aforementioned preparation is three-dimensional four-way or the above structure of four-way; Only use motion to take the yarn device for three-dimensional four-way structure; Need to use simultaneously motion to take yarn device and the axial motionless yarn device of taking for the above structure of three-dimensional four-way; And axially the motionless ranks number of taking the yarn device is respectively (line number-2) and (columns-2) that the yarn device is taken in motion; The fineness of axial motionless parent yarn and motion parent yarn can be identical or different, and above-mentioned preform structural design criterion, yarn is arranged and take the yarn device characteristics of motion is prior art;
Aforementioned square plate, side's annular, solid cubical 3 D multi-directional weaving are the known main braid method of 3 D weaving technical field, are a braiding circulation with four steps all.
Compared with prior art, the invention has the beneficial effects as follows:
1. under the prerequisite that does not increase the braiding apparatus capacity, can closely widen and weave the size of axis vertical direction exponentially, three-dimensional braided structure is used on large-size components becomes possibility.
2. yarn is complete, continuous in the whole connection preform, helps giving full play to the mechanical property of yarn, may be used in the higher structural composite material of mechanical property requirements.
The present invention can be used for the extendible preform preparation of sectional dimension; Expanding the 3 D weaving preform uses on the bigger structure member of area; Improve 3 D weaving Study on Technology and application level, form the technology with independent intellectual property right, meaning is important.
Description of drawings
Fig. 1-1 takes yarn device characteristics of motion sketch map for three-dimensional four-way structure four step rule square plate braiding among the present invention;
Fig. 1-2 takes yarn device characteristics of motion sketch map for three-dimensional five among the present invention to reaching above structure four step rule square plate braiding;
Fig. 1-3 takes yarn device characteristics of motion sketch map for three-dimensional four-way structure four step rule side annular weaving among the present invention;
Fig. 1-4 takes yarn device characteristics of motion sketch map for three-dimensional five among the present invention to reaching above structure four step rule side annular weaving;
Fig. 2-1 is the process schematic representation of the composition planar I of preparation hollow cubic shape preform A among the present invention, II, III, IV;
Fig. 2-2 is the process schematic representation of the composition plane V of preparation expansion hollow cubic shape preform B among the present invention, VI, VII;
Fig. 2-3 is the extendible hollow cubic shape of the sectional dimension preform A+B appearance and size sketch map of the present invention's preparation;
Fig. 2-4 is the profile sketch map of the solid cube preform A of the present invention's preparation;
Fig. 2-5 is the profile sketch map of the expanding solid cube preform A+B of the present invention's preparation;
Technology and the fixed position of yarn in each side's machine that Fig. 3-1 can expand the planar I of hollow cubic shape preform for preparation sectional dimension among the present invention concern sketch map;
Technology and the fixed position of yarn in each side's machine that Fig. 3-2 can expand the extent plane V of hollow cubic shape preform for preparation sectional dimension among the present invention concern sketch map;
" throwing away-implant " fibre bundle technology and each yarn combination that Fig. 4-1 adopts for the hollow or solid cube preform of the present invention A preparation concern sketch map;
Fig. 4-2 concerns sketch map for " throwing away-implant " fibre bundle technology and each yarn combination that the present invention adopts in the hollow or solid cube preform B of preparation expansion;
Fig. 5-1 is three-dimensional five process schematic representations to solid cube preform A of preparation among the extendible preform preparation method of sectional dimension of the present invention;
Fig. 5-2 is for preparing the process schematic representation of the three-dimensional five of expansion to solid cube preform B among the extendible preform preparation method of sectional dimension of the present invention.
Among Fig. 1-1, the 1-3, the yarn device is taken in " zero " expression motion, and next step the direction of motion of yarn device is taken in " → ", " ← ", " ↑ ", " ↓ " expression motion.
Among Fig. 1-2, the 1-4, the yarn device is taken in " zero " expression motion, and " * " expression is not axially moved and taken the yarn device, and next step the direction of motion of yarn device is taken in " → ", " ← ", " ↑ ", " ↓ " expression motion.
Among Fig. 2-1, the yarn that "＜" expression forms after " throwing away-implant " fibre bundle technological operation; Core is used in " XM " expression braiding.
Among Fig. 2-2, " " yarn that through the technological operation of " shifting out " fibre bundle after, forms of expression, cut off at last or as the yarn of the next cube reservation of expansion.
Among Fig. 2-3, the yarn that "＜" expression forms after " throwing away-implant " fibre bundle technological operation is the yarn that next cube braiding is reserved.
Among Fig. 2-4, the yarn that "＜" expression forms after " throwing away-implant " fibre bundle technological operation is the yarn that next cube braiding is reserved.
Among Fig. 3-1, the 3-2, the yarn that "＜" expression forms after " throwing away-implant " fibre bundle technological operation.
Among Fig. 4-1,4-2, the 4-3, the yarn that "
" expression is pooled capital and formed naturally behind " throwing away-implant " fibre bundle.
Among Fig. 5-1, the yarn that "＜" expression forms after " throwing away-implant " fibre bundle technological operation; The anchor clamps of " JJ " expression weaving forming; Machine left side, " L " expression side, machine right side, " R " expression side.
Among Fig. 5-2, the yarn that through " throwing away-implants " fibre bundle technological operation after, forms of "＜" expression, " " yarn that through the technological operation of " shifting out " fibre bundle after, forms of expression, cut off at last or the yarn of next cube reservation is expanded in conduct; The anchor clamps of " JJ " expression weaving forming; Machine left side, " L " expression side, machine right side, " R " expression side.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail.
Embodiment 1:
With two strands of plying of T300 carbon fiber 3K, adopt cube preform that three-dimensional four-way, liner core hollow base are not sealed of method preparation of sectional dimension expansion.Preform appearance and size: 217 * 72 * 155mm
3(a * b * c), wall thickness δ is 5mm, fiber volume fraction V
fBe 50%, the size of liner core: 106 * 62 * 150mm
3Its braid method is following:
(1) weaving parameter designing: according to the appearance and size and the fiber volume fraction design weaving parameter of preform, the technology that this knows for these those skilled in the art, the total columns of parent yarn that design is confirmed is 324 row (a among the corresponding diagram 2-3
ABe 102 row, b is 60 row), line number is 9 row, and female is 42.8mm/10 flower joint (mean value) to stitch length, and circumferentially stitch length is a 20.7mm/10 flower joint (mean value).This embodiment is to three-dimensional four-way structure preform, and the parent yarn all is fixed on motion and takes on the yarn device, axially takes unfixing any yarn on the yarn device.
(2) preparation planar I: by three-dimensional four-way square plate cloth yarn (102 row * 9 row), referring to Fig. 1-1, Fig. 3-1, the mid point long with parent yarn yarn is starting point; Press the braiding of square plate four step rule technology, elder generation is with the first half of first direction 5 woven flat I, referring to Fig. 2-1; Machine cycles of the every motion of yarn device (promptly weaving a stitch length) is taken in motion, takes two pairs of entrained parent yarns of yarn device (two side positions 2 of corresponding preform planar I) fibre bundle 7-1 of " throwing away " identical number of share of stock respectively to the motion in limit, square machine 6-1 left and right sides outer most edge 3 zones, and fineness is 3K; Make it wouldn't participate in braiding; Outside aforementioned parent yarn 1, prepare the new yarn of respective sets number in addition, totally 18 groups, every group of new fineness of yarn is 3K; Appoint and to get wherein two groups of 8-1,8-2; The end " implantation " of first group of new yarn 8-1 (fineness is 3K) behind aforementioned " throwing away " fibre bundle among the remaining parent yarn 7-2, and is pooled capital naturally with it and to be taken on the yarn device for 6K is fixed to former parent yarn 1 fixing motion, and the other end wouldn't be fixed; Again with second group of new yarn 8-2 (fineness is 3K) from long mid point 4 doublings of its yarn; The fibre bundle 7-1 that an end and this parent yarn 1 " throw away " after unrolling and fix in " throwing away " position of the aforementioned parent yarn 1 in edge is plied to one group of yarn naturally, and fineness is 6K, and the other end and first group of temporary loose end of new yarn 8-1 are plied to another group yarn naturally; Fineness is 6K; With regard to method for position, the motion of the yarn side of the being fixed to machine 6-3 that the planar I left side forms through " throwing away-implant " fibre bundle after is taken on the yarn device according to the yarn of " position nearby, weaving direction consistent ", and the square circular device that participant machine (6-1,6-2,6-3) is combined into weaves; The motion of the yarn side of the being fixed to machine 6-4 that the planar I right side forms behind " throwing away-implant " fibre bundle is taken on the yarn device; Initial parent yarn 1 for follow-up braiding extent plane V reservation; Repeating step 2) until meeting the requirements of length dimension 36mm, promptly accomplishes the braiding of planar I first half;
According to step 2) identical prepared planar I latter half of; Difference is that the fixing square machine of yarn changes; Referring to Fig. 3-1, the yarn among the preparation technology of aforementioned planar I first half on the side's of being fixed to machine 6-1 all changes on the side of the being fixed to machine 6-2, and ranks fixed position and square machine 6-1 are minute surface symmetrical distribution (the initial weaving thread with the planar I first half is an axis); The yarn of the side's of being fixed to machine 6-3,6-4 and the adjacent both sides of square machine 6-1 among the preparation technology of aforementioned planar I first half; With regard to method for position, change the side of being fixed to machine 6-3,6-4 and the adjacent both sides of square machine 6-2 into, the equal isoplanar of all the other steps I first half according to the yarn of " position nearby, weaving direction consistent "; Prepared planar I in view of the above, its appearance and size is: 111 * 72 * 5mm
3(a
A* b * δ);
(3) carry out integral weaving to square machine (6-1,6-2, the 6-3) side's of being combined into circular device; Motion is taken the yarn device by the annular four step rule braiding pattern motion in side; Referring to Fig. 1-3, machine cycles of yarn device mass motion is taken in motion, takes and step 2) identical method " throws away-implant " fibre bundle at square machine 6-1,6-2 and the non-conterminous dual-side of square machine 6-3; Repetitive cycling is until the braiding of accomplishing planar I I, III, IV, and two vertical seamed edge a of formation cube A
1a
1', a
2a
2', reserve yarn 1 simultaneously for weaving extent plane VI and VII thereafter
YLFineness is 6K; (this yarn is made up of two groups of yarns: first group of yarn is that an end 7-1 that parent yarn 1 " throws away " pools capital naturally with the end of new yarn 8-2 and then forms referring to Fig. 2-1; Fineness is 6K, and second group of yarn is end and the other end of new yarn 8-2 of " implantation " formation afterwards of pool capital naturally of new yarn 8-1, and fineness is 6K)); Circulation step 3) preparation (cube A is made up of planar I, II, III, IV) of completion cube A, the appearance and size of cube A is: 111 * 72 * 155mm
3(a
A* b * c);
(4) serve as the braiding starting point with planar I and planar I I, III, the non-conterminous side of IV again; By second direction 11 woven flat V, referring to Fig. 3-1, machine cycles of the every motion of yarn device is taken in motion; Take two pairs of entrained parent yarns 1 of yarn device ' (two side positions 2 of corresponding preform plane V ') the fibre bundle 7-1 ' of " throwing away " identical number of share of stock respectively to the motion in limit, square machine 6-4 left and right sides outer most edge 3 ' zone; Fineness is 3K, in addition in step 2) said parent yarn 1 ' outside prepare the new yarn of respective sets number, appoint and get wherein two groups of 8-1 ', 8-2 '; Fineness is respectively 3K; The end " implantation " of first group of 8-1 ' behind aforementioned " throwing away " fibre bundle among the remaining parent yarn 7-2 ', and is fixed to former parent yarn 1 ' fixing motion after pooling capital naturally with it and takes on the yarn device, and fineness is 6K; The other end wouldn't be fixed; Again with second group of new yarn 8-2 ' from the long mid point 4 ' doubling of its yarn, along aforementioned parent yarn 1 ' the unroll fibre bundle 7-1 ' of fixing back one end and this parent yarn 1 ' " throwing away " of " throwing away " position be plied to one group of yarn naturally, fineness is 6K; The other end and first group of temporary loose end of new yarn 8-1 ' are plied to another group yarn naturally; Fineness is 6K, and with regard to method for position, the motion of the yarn side of the being fixed to machine 6-5 that V left side in plane forms behind " throwing away-implant " fibre bundle is taken on the yarn device according to the yarn of " position nearby, weaving direction consistent "; The motion of the yarn side of the being fixed to machine 6-6 that V right side, plane forms behind " throwing away-implant " fibre bundle is taken on the yarn device, referring to Fig. 3-2;
(5) carry out integral weaving to square machine (6-4,6-5, the 6-6) side's of being combined into circular device; Motion is taken the yarn device by four step rule side's annular weaving regular movement; Machine cycles of every braiding, promptly female the shaping one to every braiding spent the height that saves, just two vertical seamed edge a in the step 3)
1a
1', a
2a
2' last the yarn of reserving 1
YL,, inweave successively in the current braiding yarn, promptly the current reservation yarn 1 that will inweave by its erect-position (refer to the residing height and position of current yarn, be this field known technology term) sequencing from high to low
YLThe motion that the yarn device side of being put into machine 6-5,6-6 are taken in pairing motion is taken the yarn device and is introduced district 13, makes its motion of participating in next machine cycles, circulates successively up to two vertical seamed edge a
1a
1', a
2a
2' last the yarn of reserving 1
YLAll inweave, accomplish the braiding of plane VI, VII, and form two vertical seamed edge b of cube B
1b
1', b
2b
2', simultaneously from two vertical seamed edge b of cube B
1b
1', b
2b
2' in shift out and aforementioned reservation yarn 1
YLGroup number identical yarn, fineness is 3K, promptly current to shift out yarn be put into the draw-out area 14 that the yarn device is taken in motion; Make it break away from the motion of next machine cycles; Circulate according to this until having woven cube B, cut off the residual yarn that shifts out at last, referring to Fig. 2-2;
(6) so far, on the basis of preparation cube A, prepared cube B through the method for cross section expansion again, the appearance and size of cube B is: 106 * 72 * 155mm
3, referring to Fig. 2-3, and the yarn among cube A and the cube B runs through each other and forms an integral body, and the preform that final preparation is accomplished is A+B, and its appearance and size is: 217 * 72 * 155mm
3(a * b * c).
Embodiment 2:
With two strands of plying of epoxy type quartz yarn 190Tex, adopt the extendible preform preparation method of sectional dimension to prepare a three-dimensional five to, solid cube preform, shown in Fig. 2-4.Preform size: 600mm * 15mm * 300mm (a * b * c), fiber volume fraction V
fBe 50%.Its preparation method is following:
(1) embodiment 1 is to three-dimensional four-way structure preform, and its parent yarn all is fixed on motion and takes on the yarn device, and the operation of " throwing away-implant " fibre bundle is only taken on the yarn device in motion and carried out; For three-dimensional five to and above structure preform; Except that the step 2 of yarn device by embodiment 1 taken in motion) carry out the operation of " throwing away-implant " fibre bundle; Also to add axially motionless " throwing away-implant " fibre bundle operation of taking the yarn device; This just constitutes complete " throwing away-an implant " fibre bundle process cycles, axially motionlessly takes the method for operating that the yarn device " throws away-implant " fibre bundle and sees the step 2 among the embodiment 2 for details).
By the extendible preform preparation method of sectional dimension, can through expansion once, secondary or above method prepare the preform of given size.This example only provides expansion preparation method once, and expansion secondary or above preparation method are identical with it, just increases the number of times of repetitive cycling.
Present embodiment is to take sectional dimension expansion method once to prepare width dimensions to increase twice solid cube preform.At first prepare preform A, its appearance and size: 300mm * 15mm * 300mm (a
A* b * c), again through sectional dimension expansion method once, preparation preform (A+B), the appearance and size of final preform: 600mm * 15mm * 300mm (a * b * c).
At first, appearance and size and the fiber volume fraction according to preform A designs the weaving parameter: the parent yarn is by motion parent yarn 1 and axial motionless parent yarn 1
CXForm, wherein the ranks number of motion parent yarn 1: 16 row * 398 row, axial motionless parent yarn 1
CXThe ranks number: 14 the row * 396 row; The mother of preform is to stitch length: 40mm/10 flower joint (mean value), and circumferentially stitch length: 15mm/10 flower saves (mean value).
(2) the solid cube A of preparation: referring to Fig. 1-2, by above-mentioned motion parent yarn 1 and axial motionless parent yarn 1
CXRanks count the cloth yarn, motion parent yarn 1 and axial motionless parent yarn 1
CXBe separately fixed at motion and take yarn device and axial motionless taking on the yarn device; Adopt three-dimensional five to the vertical weaving of square plate; Vertical weaving is one of process that 3 D weaving is studied and the Application Areas technical staff knows, referring to Fig. 5-1, by direction 12 preparation cube A; Motion is taken machine cycles of the every motion of yarn device (though this moment, the axial motionless yarn device of taking did not move its yarn 1
CXTaking the parent yarn 1 that the yarn device carries with motion takes place once to interweave; The motion cycle of taking the yarn device is sign so machine cycles has been moved, and this is the known method of this area), take the entrained parent yarn of yarn device (the right flank VIII of corresponding cube A) " throwing away " one fibre bundle 7-1 to the motion in 3 zones, square machine 6-7 right side; Fineness is 190Tex; The fibre bundle 7-1 that " throws away " wouldn't participate in braiding, this routine parent yarn 1 outside, prepares in addition new yarn, always organizes number and is parent yarn that above-mentioned the confession " throw away " fibre bundle and always organize 2 times of number and be 16; The fineness of every group of new yarn is 190Tex; Appoint and to get wherein two groups of 8-1,8-2, the end " implantations " of first group of new yarn 8-1 (190Tex fibre bundle) behind aforementioned " throwing away " fibre bundle among the remaining parent yarn 7-2, is plied to the motion that 190Tex * 2 are fixed to the square machine 6-1 that former parent yarn 1 fixes naturally with it and takes on the yarn device; The other end wouldn't be fixed; Again with second group of new yarn 8-2 (190Tex fibre bundle) from long mid point 4 doublings of its yarn, fixing back one end that unrolls along " throwing away " position of aforementioned parent yarn 1 extensively throws away with this parent yarn " fibre bundle 7-1 be plied to one group of yarn naturally, fineness is 190Tex * 2; other end and first group of new yarn 8-1 a loose end temporarily are plied to another group yarn naturally; fineness is 190Tex * 2, operation successively, until accomplish 3 regional in total movement take the entrained motion parent yarn 1 of yarn device and " throw away-implant " fibre bundle and operate.
Carry out the axially motionless entrained axial motionless parent yarn 1 of yarn device of taking thereafter
CX" throw away-implant " the fibre bundle operation, referring to Fig. 4-3, the at first axial motionless entrained parent yarn 1 of yarn device of taking
CX" throw away " fibre bundle 9-1, fineness is 190Tex, at the axial motionless parent yarn 1 of this example
CXWith the new yarn 10-1 of motion parent yarn 1 outer preparation, it always organizes number and the axial motionless parent yarn 1 of row
CXEquate promptly 14, fineness is 190Tex, an end and this axial motionless parent yarn 1 after the doubling
CXThe fibre bundle 9-1 that " throws away " is plied to one group of yarn naturally, and fineness is 190Tex * 2, the other end and axial motionless parent yarn 1
CXThe leftover yarn 9-2 that " throws away " behind the fibre bundle is plied to another group yarn naturally, and fineness is 190Tex * 2, operation successively, all axial motionless entrained axial motionless parent yarns 1 of yarn device of taking in accomplishing 3 zones
CX" throw away-implant " the fibre bundle operation.
Repetitive cycling is until the braiding of accomplishing cube A, and the side VIII of formation cube A, reserves the yarn 1 of the cube of braiding expansion thereafter B simultaneously
YL, it is by motion parent yarn 1 and axial motionless parent yarn 1
CXThe yarn of two systems, the yarn after the operation of " throwing away-implant " fibre bundle is formed, and fineness is 190Tex * 2, when subsequent preparation expansion cube B, inweaves successively by its erect-position height order from top to bottom.
(3) the solid cube B of preparation:, be close to solid cube A and carry out the second substandard cloth yarn, the ranks number of motion parent yarn 1: 16 row * 398 row, axial motionless parent yarn 1 referring to Fig. 5-2
CXThe ranks number: 14 row * 396 row, still adopt vertical braid method, by direction 12 preparation cube B, machine cycles of the every motion of yarn device is taken in motion, and is promptly female to the be shaped height of a flower joint of every braiding, just step 2) in the reservation yarn 1 of cube A side VIII
YL,, inweave successively in the current braiding yarn, promptly the current reservation yarn 1 that will inweave by its erect-position sequencing from high to low
YLYarn device and the axial motionless yarn device of taking are taken in pairing motion; Take the axially motionless order of taking the yarn device of yarn device, back by motion earlier; Introduce district 13 to the yarn device of taking of its side of being put into machine 6-5,6-6, make its motion of participating in next machine cycles, according to cocycle until the reservation yarn 1 on the VIII of side
YLAll inweave, the side IX from cube B shifts out and aforementioned reservation yarn 1 simultaneously
YLThe identical yarn of group number; Fineness is 190Tex * 2, referring to Fig. 2-5, promptly is put into motion to the current yarn that will shift out and takes yarn device draw-out area 14; Make it break away from the motion of next machine cycles; Repetitive cycling cuts off the residual yarn that shifts out on the side IX of cube B, referring to Fig. 5-2 until having woven cube B at last;
(4) so far; Solid cube A prepares on the basis in completion; Prepared cube B through sectional dimension expansion method once again; And it is as a whole that cube A and yarn among the cube B run through into each other, and the solid preform of finally preparing is cube A+ cube B, and its appearance and size: 600mm * 15mm * 300mm (a * b * c).
Annotate:
1. the parent yarn is meant the yarn of arranging by the ranks of the initial braiding of design; With the group is unit; One group of individual taking on the yarn device of parent yarn stuck-at-; Every group of parent yarn is made up of n thigh fibre bundle, and per share fibre bundle is made up of n root fibre single thread again, and the composing quantity of monofilament and the twist are customized when fiber dispatches from the factory.
2. convenient in order to measure fibre fineness, quartz fibre is used Tekes (Tex), carbon fiber use K number (single fiber that 1K promptly has 1000 monofilament to constitute) carry out fineness ratio with metering.
In the specification in the summary of the invention the total columns of parent yarn described in step 8) and embodiment 1 and 2 be meant the columns sum of main body yarn and border additional yarn, the total line number of parent yarn also is the line number sum of main body yarn and border annex yarn.
Claims (6)
1. the extendible preform preparation method of sectional dimension is characterized in that comprising the following steps:
1) square machine (6-1,6-2,6-3,6-4,6-5,6-6) is distributed by square circular symmetric;
2) knit planar I by 3 D multi-directional square plate weaving for establishment and do following the preparation:
Prepare the parent yarn (1) of respective sets number by the ranks number of design, the two ends of every group of parent yarn are respectively fixed to taking on the yarn device of symmetrically arranged side's machine (6-1), (6-2);
Total group of number of aforementioned parent yarn=take yarn device line number * columns;
Every group of parent yarn is folded yarn, and being pooled capital naturally by the n thigh kind single-stranded fiber identical with fineness forms aforementioned n >=2; The side of being separately fixed at, parent yarn two ends machine (6-1), identical the taking on the yarn device of (6-2) ranks sequence number;
3) be starting point with the long mid point of parent yarn yarn; Press the first half of first direction (5) woven flat I; Take machine cycles of the every motion of yarn device; The fibre bundle (7-1) of taking two pairs of entrained parent yarns difference " throwing away " identical number of share of stocks of yarn device corresponding in square machine (6-1) limit, left and right sides outer most edge (3) zone with two side positions (2) of corresponding preform planar I; Aforementioned parent yarn (1) outside, prepare in addition the new yarn of respective sets number, times get wherein two groups (8-1,8-2), with the end " implantation " of first group (8-1) behind aforementioned " throwing away " fibre bundle in the remaining parent yarn (7-2); And be fixed to fixing the taking on the yarn device of former parent yarn (1) after pooling capital naturally with it; The other end wouldn't be fixed, again with second group of new yarn (8-2) from the long mid point of its yarn (4) doubling, the fibre bundle (7-1) that unroll along " throwing away " position of aforementioned parent yarn (1) fixing back one end and this parent yarn (1) " throw away " is plied to one group of yarn naturally; The other end and first group of new yarn (8-1) a loose end temporarily are plied to another group yarn naturally; According to the yarn of " position nearby, weaving direction consistent " with regard to method for position, the taking on the yarn device of the yarn side of the being fixed to machine (6-3) that the planar I left side forms through " throwing away-implants " fibre bundle after, participation is woven by the square circular device that square machine (6-1,6-2,6-3) is combined into; Taking on the yarn device of the yarn side of the being fixed to machine (6-4) that the planar I right side forms behind " throwing away-implant " fibre bundle is as the initial yarn (1) of follow-up braiding extent plane V reservation;
The fibre bundle number of share of stock of " throwing away " and " implantation " equates on aforementioned every group of parent yarn;
An aforementioned machine cycles is meant that taking the yarn device accomplishes complete four a walkings row motion, forms the preform of a stitch length on weaving direction;
4) repeating step 3) until the length dimension that reaches the planar I first half, accomplish the braiding of planar I first half;
5) according to step 2) latter half of to the identical technology woven flat I of step 4); Difference is that the fixing square machine of yarn changes; Yarn in the weaving of aforementioned planar I first half on the side's of being fixed to machine (6-1) all changes on the side's of being fixed to machine (6-2); Its ranks fixed position and square machine (6-1) are minute surface and are symmetrically distributed; The side's of being fixed to machine (6-3) in the weaving of aforementioned planar I first half, the both sides yarn that (6-4) is adjacent with square machine (6-1) with regard to method for position, change the side's of being fixed to machine (6-3), (6-4) and the adjacent both sides of square machine (6-2) according to the yarn of " position nearby, weaving direction consistent " into; All the other are all with step 2) to step 4), reach the braiding of promptly accomplishing planar I behind the length dimension of planar I;
6) carry out integral weaving to square machine (6-1,6-2, the 6-3) side's of being combined into circular device; Take the yarn device by four step rule side's annular regular movement; All take the yarn device machine cycles of having moved; Take the method identical with step 3) " to throw away-implant " fibre bundle at square machine (6-1), (6-2) with the non-conterminous dual-side of square machine (6-3), repetitive cycling is until the braiding of accomplishing planar I I, III, IV, and two vertical seamed edge (a of formation cube A
1a
1', a
2a
2'), reserve yarn (1 simultaneously for weaving extent plane VI and VII thereafter
YL); This yarn has two groups of yarns integrated: first group of yarn is the end (7-1) that " throws away " of parent yarn (1) and an end of new yarn (8-2) back of pool capital naturally forms, and second group of yarn is an end and formation after newly the other end of yarn (8-2) is not pooled capital naturally of " implantations " of new yarn (8-1); So far accomplished the braiding of cube A;
7) serve as the braiding starting point with planar I and planar I I, III, the non-conterminous side of IV again; By second direction (11) woven flat V; Take machine cycles of the every motion of yarn device; The fibre bundle (7-1 ') of taking entrained two pairs of parent yarns (1 ') difference " throwing away " the identical number of share of stock of yarn device corresponding in square machine (6-4) limit, left and right sides outer most edge (3 ') zone with two side positions (2 ') of preform planar I; Outside aforementioned parent yarn (1 '), prepare the new yarn of respective sets number in addition; Appoint and to get wherein two groups (8-1 '), (8-2 '), the end " implantations " of first group (8-1 ') behind aforementioned " throwing away " fibre bundle in the remaining parent yarn (7-2 '), and is fixed to taking on the yarn device that former parent yarn (1 ') fixes after pooling capital naturally with it; The other end wouldn't be fixed; Again second group of new yarn (8-2 ') located doubling at the long mid point (4 ') of its yarn, the fibre bundle (7-1 ') that unroll along " throwing away " position of aforementioned parent yarn (1 ') fixing back one end and this parent yarn (1 ') " throw away " is plied to one group of yarn naturally, and the other end and first group of new yarn (8-1 ') a loose end temporarily are plied to another group yarn naturally; According to the yarn of " position nearby, weaving direction consistent " with regard to method for position, the taking on the yarn device of the yarn side of the being fixed to machine (6-5) that V left side in plane forms behind " throwing away-implant " fibre bundle; Taking on the yarn device of the yarn side of the being fixed to machine (6-6) that V right side, plane forms behind " throwing away-implant " fibre bundle;
The aforementioned new yarn of preparing in addition (8-1,8-2) and (8-1 ', 8-2 '), it always organizes number is respectively parent yarn (1) and (1 ') 2 times before " throwing away " fibre bundle, fineness is half of parent yarn (1);
8) carry out integral weaving to square machine (6-4,6-5, the 6-6) side's of being combined into circular device, take the yarn device, all take the yarn device machine cycles of having moved, just two vertical seamed edge (a in the step 6) by four step rule side's annular weaving regular movement
1a
1', a
2a
2') the last yarn of reserving (1
YL), by its erect-position sequencing from high to low, inweave successively in the current braiding yarn, promptly the current reservation yarn (1 that will inweave
YL) the pairing motion motion of taking the yarn device side of being put into machine (6-5,6-6) takes the yarn device and introduce district (13), makes its motion of participating in next machine cycles, circulate successively up to two vertical seamed edge (a
1a
1', a
2a
2') the last yarn of reserving (1
YL) all inweave, accomplish the braiding of plane VI, VII, and form two vertical seamed edge (b of cube B
1b
1', b
2b
2'), simultaneously from two vertical seamed edge (b of cube B
1b
1', b
2b
2') in shift out and aforementioned reservation yarn (1
YL) the identical yarn of group number, yarn (1 ") that this part yarn cuts off at last or the next cube of conduct expansion is reserved.
2. method according to claim 1 is characterized in that the yarn device of taking on said side's machine refers to that motion takes yarn device and/or the axial motionless yarn device of taking.
3. method according to claim 1; The fibre bundle number of share of stock that it is characterized in that described " throwing away " technology each " throwing away " is n-1, n >=2, and " implantation " is the converse process of " throwing away "; Identical with the operating procedure of " throwing away "; Operating result to fibre bundle is just in time opposite, and the number of share of stock of each " implantation " fibre bundle is n-1, n >=2.
4. according to claim 1 or 2 or 3 described methods, it is characterized in that described preform is complete three-dimensional four-way or the above structure of four-way; Adopt four step rule solid squares or hollow side annular or solid side's annular weaving technology to weave.
5. according to claim 1 or 2 or 3 or 4 described methods, it is characterized in that described preform is the cube of solid or hollow liner core.
6. method according to claim 1 is characterized in that weaving and uses yarn to be carbon fiber, glass fibre, quartz fibre, high silica fiber, polyethylene fiber, aramid fiber or metal fibre.
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