CN101503838B - Method for knitting 2.5-dimension integral knit multiple-pass fabric - Google Patents
Method for knitting 2.5-dimension integral knit multiple-pass fabric Download PDFInfo
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- CN101503838B CN101503838B CN 200810236210 CN200810236210A CN101503838B CN 101503838 B CN101503838 B CN 101503838B CN 200810236210 CN200810236210 CN 200810236210 CN 200810236210 A CN200810236210 A CN 200810236210A CN 101503838 B CN101503838 B CN 101503838B
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Abstract
The invention relates to a weave method of 2.5-dimensional overall braided multi-through pipe fabric. The weave method is characterized in that (1) the structure of the fabric adopts a 2.5-dimensional shallow-cross bended-connection structure; (2) the overall weaving of the fabric adopts core imitation-shaped weaving to ensure the internal molded surface dimension of the fabric; (3) the fabric is divided into two parts, namely a connecting body part and a through pipe part, wherein the connecting body is a part connected with the through pipes, while the through pipes are connected through the same connecting body; (4) the lower section of each through pipe is provided with warp yarns of the part in advance; (5) weft yarns between through pipes in the same plane are lined between the warp yarns layer by layer through adopting a weft insertion process; (6) when the horizontal section of the connecting body increases, warp yarns are increased through adopting a shift yarn adding method, and the method can effectively improve the hole phenomenon in yarn-adding points; and (7) when the horizontal section of the connecting body decreases, warp yarns are reduced through adopting a shift yarn reduction method. The 2.5-dimensional multi-through pipe fabric woven by the weave method has the advantages of better overall property, controllable shaping, high damage tolerance, excellent performances of impact resistance, delamination resistance, fatigue resistance, and the like.
Description
Technical field
The present invention relates to a kind of weaving of special-shaped fabric, particularly a kind of integral weaving technology of many siphunculus shape fabric belongs to the three dimensional garment knitting technical field.
Background technology
The integral weaving moulding of many siphunculus fabric is a key problem in technology of the present invention.At present more urgent to the demand of this kind fabric at home, its potential Application Areas is also wider.The globality of many siphunculus fabric, size accuracy, density uniformity and batch uniformity are that the performance of each junction, position of crucial controlling index, especially fabric of the present invention designs and control key especially.
Important application direction of this kind fabric is the structural metallic materials of using on the instead of satellites engine support is, to realize reducing satellite structure weight, increases the satellite payload, thereby improves the target of satellite overall performance.This kind fabric of weaving forming can adopt from fabric construction three-dimensional structure and 2.5 dimension structures.Because 2.5 dimension structures are unique textures that a kind of adjacent layer connects, machined, punching are very little to its performance impact, and its profiling performance is good, can realize the profiling braiding and the high accuracy size Control of complex space type surface.Though three-dimensional structure is tieed up the characteristics that structures also have good integrity with respect to 2.5, has following several respects shortcoming: machined and punching are bigger to its performance impact, can cause intensity decreases about 40%; Though can satisfy the requirement of accurate profiling, precision is not as 2.5 dimension structures; The plus-minus yarn is bigger to its density uniformity influence in three-dimensional braided structure, can cause the penetrability hole.In view of the foregoing, the present invention has adopted the curved structure that connects of the shallow friendship of 2.5 dimensions.
The fabric construction that a kind of multidirectional three-dimension integrally braiding thing that patent documentation " a kind of three-dimension integrally braiding method of multi-directional preform " is introduced in (CN1827887A) adopts be the three-dimensional four-way of four step rule, five to or five to above three-dimensional structure.And the employing of the fabric of this patent introduction is the curved structure that connects of the shallow friendship of 2.5 dimensions.
What present satellite engine support adopted is structural metallic materials, and still belongs to the first with the composite alternative metals material of the stereo fabric of global formation.The fabric that the present invention developed adopts the curved structure that connects of the shallow friendship of 2.5 dimensions.The normal structure that adopts has in stereo fabric 2.5 dimension structures: curved connection of shallow friendship and shallow friendship direct connection, deep friendship connection.
Summary of the invention
The technical problem to be solved in the present invention is exactly that 2.5 many siphunculus of dimension fabrics integral body profiling braiding difficulty are big, the uniformity and the difficult control of uniformity of fabric, the place's mechanical property weakness that interweaves of fabric interface, problems such as difficult quality guarantee provide a kind of braid method of 2.5 dimension integral knit multiple-pass fabrics.
For solving the problems of the technologies described above, the present invention adopts following technical scheme
(1) fabric construction adopts the curved structure that connects of the shallow friendship of 2.5 dimensions;
(2) integral weaving of this fabric is with core profiling braiding, to guarantee the interior molding surface size of fabric;
(3) fabric is divided into two parts: connector part and siphunculus part.Connector is meant the part that connects siphunculus, and shape can have diversity (as spheroid, cuboid, cube or the like); The siphunculus shape can have that diversity (as cylindrical, square column type or the like) can size differs, variable cross-section, flanged etc.; Siphunculus can have a plurality of, connects by same connector;
(4) siphunculus hypomere (following 1/4 arc surface of column type or the lower plane of square column type) need preset the warp thread of this part;
(5) weft yarn adopts inlaid thread technology weft yarn successively to serve as a contrast between thread layer between conplane siphunculus;
Can adopt displacement to add the yarn method when (6) the connector horizontal cross-section increases increases warp thread, and displacement adds the yarn method and can reach the hole phenomenon that effective improvement adds yarn point;
Can adopt displacement to subtract the yarn method when (7) the connector horizontal cross-section reduces and reduce warp thread, displacement subtracts the yarn method and can reach the hole phenomenon that effective improvement subtracts yarn point.
Above-mentioned connector is a spheroid, is divided into arc section and lower semisphere part three parts between episphere part, siphunculus;
The episphere of connector adds the increase that yarn is realized warp thread by displacement, and the warp thread that is about to the warp thread of former warp thread even level and upper and lower surface moves to and adds accordingly on the yarn position, fastens yarn again on the warp thread position that lacks, and realizes the yarn that adds of warp thread;
The lower semisphere of connector subtracts the minimizing that yarn is realized warp thread by displacement, and the warp thread that is about to subtract even level in the yarn row is wiped out, and more remaining warp thread is moved on the corresponding vacant position, realizes the yarn that subtracts of warp thread.
The number of plies of fabric warp thread of the present invention is more than 4 layers.
The increase of warp thread quantity when the present invention adds the yarn method and realizes that the connector horizontal cross-section increases by displacement, and solved by displacement and to add the defective that yarn is prone to hole; Realize that by the lining yarn process warp thread of wearing latitude and siphunculus between the siphunculus distributes; The minimizing of warp thread quantity when subtracting yarn method and filling density control device and realize that the connector horizontal cross-section reduces, solved and subtracted the shortcoming that yarn is prone to hole by displacement.
The present invention adds yarn method, inlaid thread technology and displacement with displacement and subtracts in the braiding process that the yarn method is applied to 2.5 dimension many siphunculus fabrics, satisfied the warp thread increase and decrease requirement of connector variable cross-section, solve the hole defect that the plus-minus yarn occurs, guaranteed the global density uniformity of fabric.2.5 many siphunculus of dimension fabrics that the present invention weaves out have premium properties such as globality, controllable shaping, high damage tolerance, shock-resistant, anti-layering and antifatigue preferably, and can be widely used in the integral weaving method with the special-shaped fabric that becomes size, many types of combination.
Description of drawings
Fig. 1 is 2.5 many siphunculus of dimension fabric schematic diagrames.A is a siphunculus, and B is a connector, and C is the episphere of connector, and D is an arc section between siphunculus, and E is the lower semisphere of connector.
Fig. 2 (Fig. 2-1 is to Fig. 2-4) is that displacement adds the yarn schematic diagram." → " is the warp thread moving direction, ● be former warp thread, zero for there not being the position (need add the yarn place) of warp thread, and a is high row warp thread, b is low row warp thread, and 1～8 is the warp thread number of plies, and 9 is former warp thread, and 10 for needing the warp thread of increase, 11 fasten yarn for vacant position, and H is high row, and L is low row.
Fig. 3 (Fig. 3-1 is to Fig. 3-3) is a weft yarn lining yarn process schematic diagram between siphunculus.F is the molded part of fabric, and 18 is last quarter turn, and 19 is right quarter turn, and 20 are following quarter turn, and 21 be left quarter turn, and 22 be weft yarn lining yarn for the first time, and 23 be weft yarn lining yarn for the second time, and 24 for serving as a contrast the weft yarn of going into, and 25 is to serve as a contrast the warp thread that weft yarn is used for siphunculus
Fig. 4 (Fig. 4-1 is to Fig. 4-4) is that displacement subtracts the yarn schematic diagram." → " is the warp thread moving direction, ● for keeping warp thread, zero for to subtract the position of vacating behind the yarn, and a is high row warp thread, and b is low row warp thread, and 1～8 is the warp thread number of plies, and 9 is former warp thread, and 10 is the warp thread that need reduce, and 11 for subtracting the yarn position, and H is high row, and L hangs down row.
The specific embodiment
By embodiment details of the present invention is described below in conjunction with accompanying drawing.
Embodiment: fabric adopts the curved structure that connects of the shallow friendship of 2.5 dimensions
With reference to Fig. 1, be example with 2.5 dimension four-way pipes below, specifically tell about the process implementing method.As Fig. 1 we with the fabric separated into two parts: connector B and siphunculus A; Again spheroid partly is divided into three parts (as C, D, E among Fig. 1) according to weaving: arc section and lower semisphere part between episphere part, siphunculus.The braiding order shows as Fig. 1: 12 → 13 → 14 → 15 → 16 → 17.
Below the invention will be further described.
The episphere of fabric adds the increase that yarn is realized warp thread by displacement, and we suppose that the fabric warp thread number of plies is 8 layers, and its concrete operations are as follows:
(1) referring to Fig. 2,2.5 curved connection of the shallow friendship of dimensional fabric claims in the structure that adjacent two row warp thread are a pair of, the row at that stock-traders' know-how yarn place that can see fabric exterior are defined as high row (expression H place among the figure), then classify low row (expression L place among the figure) as with its paired another, and high row exceed two positions than hanging down to be listed as.All adopt to add yarn in pairs promptly high row 1 row, low row 1 row when adding yarn.
(2) referring to Fig. 2, the low row warp thread 1,3,5 of former warp thread that will add left side, yarn position moves to and adds on the high row of yarn 3,5,7 positions, the low row warp thread 8 of former warp thread is moved to add low column position 8 places of yarn, the lower row warp thread 7 of former warp thread is displaced downwardly to low row 8 places of former warp thread.Displacement back result: 1,3,5,7 positions were vacated during the former warp thread that adds left side, yarn position hanged down and is listed as, and added the high row 2,4,6,8 of yarn and vacated.
The high row warp thread 4,6,8 of former warp thread that will add right side, yarn position moves to and adds on low row 2,4,6 positions of yarn, the high row warp thread 1 of former warp thread is moved to add the high column position of yarn 1 place, will move to the high row of former warp thread 1 place on the high row warp thread 2 of former warp thread again.Displacement back result: add in the high row of former warp thread on right side, yarn position 2,4,6,8 positions and vacate, add the low row 1,3,5,7 of yarn and vacate.
(3) get 4 one threads, fasten every one thread two ends at the low row 1 of former warp thread respectively and add on the high row 2 of yarn, the low row 3 of former warp thread and add on the high row 4 of yarn, the low row 5 of former warp thread and add on the high row 6 of yarn, low row 7 of former warp thread and adding on the high row 8 of yarn.
Other gets 4 one threads, every one thread two ends is fastened respectively adding on low row 1 of yarn and the high row 2 of former warp thread, add on low row 3 of yarn and the high row 4 of former warp thread, add on low row 5 of yarn and the high row 6 of former warp thread, adding on low row 7 of yarn and the high row 8 of former warp thread.
Weft yarn adopts inlaid thread technology between the fabric siphunculus, and we are with reference to Fig. 3, with siphunculus circumference quadrisection, about 1/4 warp thread need adopt inlaid thread technology to realize.Is example (two siphunculus angles are operated equally more than or equal to the circular arcs of 90 degree) with two siphunculus angles less than 90 circular arcs of spending, and supposes that the fabric warp thread number of plies is 8 layers, illustrates that its concrete operations are as follows:
(1) referring to Fig. 3, (a) lining of mark 22 is gone into weft yarn technology referring to figure (b) among the figure.By the fabric inner surface to outer surface with warp thread opening successively, get single fiber and serve as a contrast into opening part, and carry out the urgent operation of filling density as weft yarn.
(2) referring to Fig. 3, (a) lining of mark 23 is gone into the weft yarn operation referring to figure (b) among the figure.After finishing the operation of (1), equipment is carried out the motion of height row, carry out the weft yarn lining yarn operation of mark 23 among the figure (a) again according to the curved characteristics of motion that connects structure of shallow friendship.Equally by the fabric inner surface to outer surface with warp thread opening successively, get single fiber and serve as a contrast into opening part, and carry out the urgent operation of filling density as weft yarn.
(3) as follows method is carried out equipment moving earlier, successively serves as a contrast weft yarn more from inside to outside.
(4) two siphunculus angles are operated by (1)～(3) equally greater than the circular arc of 90 degree.
Referring to Fig. 3 (a) with fabric siphunculus circumference quadrisection, the warp thread of last 1/4 part transits to 1/4 part on the siphunculus naturally by the warp thread of spheroid, after 1/4 weft yarn serves as a contrast yarn about finishing, 1/4 fasten yarn down, fasten and knit siphunculus around weft knitting after yarn finishes, at siphunculus during, need to 1/4 adding yarn about siphunculus, so that reach the requirement of fabric warp count for the first time around latitude.
The lower semisphere of fabric subtracts the minimizing that yarn is realized warp thread by displacement, and we suppose that the fabric warp thread number of plies is 8 layers, and its concrete operations are as follows:
(1) referring to Fig. 4,2.5 curved connection of the shallow friendship of dimensional fabric claims in the structure that adjacent two row warp thread are a pair of, the row at that stock-traders' know-how yarn place that can see fabric exterior are defined as high row (expression H place among the figure), then classify low row (expression L place among the figure) as with its paired another, and high row exceed two positions than hanging down to be listed as.All adopt to subtract yarn in pairs promptly high row 1 row, low row 1 row when subtracting yarn.
(2), will subtract yarn position left side and keep the warp thread 1 in the low row of warp thread and subtract the high row 2 of yarn, keep the warp thread 3 in the low row of warp thread and subtract the high row 4 of yarn, keep the warp thread 5 in the low row of warp thread and subtract the high row 6 of yarn, keep the warp thread 7 in the low row of warp thread and subtract the high row 8 locational warp thread of yarn and wipe out referring to Fig. 4.Subtract the knot fruit: subtract the low row 1,3,5,7 of left side, yarn position reservation warp thread and vacate, subtract the high row 2,4,6,8 of yarn.
To subtract the warp thread 1 in the low row of yarn and subtract right side, yarn position and keep the high row 2 of warp thread, subtract the warp thread 3 in the low row of yarn and subtract right side, yarn position and keep the high row 4 of warp thread, subtract the warp thread 5 in the low row of yarn and subtract right side, yarn position and keep the high row 6 of warp thread, subtract the warp thread 7 in the low row of yarn and subtract right side, yarn position and keep the high row 8 of warp thread.Subtract the knot fruit: subtract the low row 1,3,5,7 of yarn and vacate, subtract right side, the yarn position low row 2,4,6,8 of reservation warp thread and vacate.
(3) will subtract the low row warp thread 2,4,6 in yarn position moves to and subtracts left side, yarn position and keep on low row 4,6,8 positions of warp thread, to subtract right side, yarn position and keep the high row warp thread 1 of warp thread and be displaced downwardly to and keep low row 2 places of warp thread, will subtract the high row warp thread 1 of yarn again and move to and subtract high column position 1 place, left side, yarn position.
The hypothesis warp thread number of plies is 8 layers among the embodiment, can implement with method for the above-mentioned three kinds of manufacturing technologies of the different fabric of the warp thread number of plies.
Claims (6)
1. the braid method of a dimension integral knit multiple-pass fabric is characterized in that:
(1) fabric construction adopts the curved structure that connects of the shallow friendship of 2.5 dimensions;
(2) integral weaving of this fabric is with core profiling braiding, to guarantee the interior molding surface size of fabric;
(3) fabric is divided into two parts: connector part and siphunculus part; Connector is meant the part that connects siphunculus, and siphunculus is more than one, connects by same connector;
(4) the siphunculus hypomere need preset the warp thread of this part;
(5) weft yarn between conplane siphunculus adopts inlaid thread technology successively to serve as a contrast weft yarn between thread layer;
Adopting displacement to add the yarn method when (6) the connector horizontal cross-section becomes big increases warp thread, and displacement adds the yarn method and can effectively improve the hole phenomenon that adds yarn point;
Adopt displacement to subtract the yarn method when (7) the connector horizontal cross-section diminishes and reduce warp thread, displacement subtracts the yarn method and can effectively improve the hole phenomenon that subtracts yarn point.
2. the braid method of 2.5 dimension integral knit multiple-pass fabrics according to claim 1, it is spheroid, cuboid, cube or other geometry that the shape that it is characterized in that connector has diversity.
3. as the braid method of 2.5 dimension integral knit multiple-pass fabrics as described in the claim 2, it is characterized in that connector is a spheroid, be divided into arc section and lower semisphere part three parts between episphere part, siphunculus;
The episphere of connector adds the increase that yarn is realized warp thread by displacement, and the warp thread that is about to the warp thread of former warp thread even level and upper and lower surface moves to and adds accordingly on the yarn position, fastens yarn again on the warp thread position that lacks, and realizes the yarn that adds of warp thread;
The lower semisphere of connector subtracts the minimizing that yarn is realized warp thread by displacement, and the warp thread that is about to subtract even level in the yarn row is wiped out, and more remaining warp thread is moved on the corresponding vacant position, realizes the yarn that subtracts of warp thread;
Connector siphunculus arc section adopts the conventional method braiding.
4. the braid method of 2.5 dimension integral knit multiple-pass fabrics according to claim 1, the number of plies that it is characterized in that warp thread is more than 4 layers.
5. the braid method of 2.5 dimension integral knit multiple-pass fabrics according to claim 1, when it is characterized in that siphunculus is cylindrical, its down 1/4 arc surface need preset the part warp thread; When siphunculus was square column type, the lower plane of square column type need preset the part warp thread.
6. as the braid method of 2.5 dimension integral knit multiple-pass fabrics as described in the claim 3, it is characterized in that specifically comprising the steps:
A. the braiding of the episphere of fabric connector is adopted displacement to add yarn and is realized that warp thread increases, and the warp thread number of plies is 8 layers:
(1) be a pair of with adjacent two row warp thread, the row at that stock-traders' know-how yarn place that can see fabric connector outer surface are defined as high row, then classify low row as with its paired another, and high row exceed two positions than low row; All adopt to add yarn in pairs promptly high row 1 row, low row 1 row when adding yarn;
(2) the low row warp thread 1,3,5 of former warp thread that will add yarn position left side moves to and adds on the high row of yarn 3,5,7 positions, the low row warp thread 8 of former warp thread is moved to add low column position 8 places of yarn, the lower row warp thread 7 of former warp thread is displaced downwardly to low row 8 places of former warp thread; Displacement back result: 1,3,5,7 positions were vacated during the former warp thread that adds left side, yarn position hanged down and is listed as, and added the high row 2,4,6,8 of yarn and vacated;
The high row warp thread 4,6,8 of former warp thread that will add right side, yarn position moves to and adds on low row 2,4,6 positions of yarn, the high row warp thread 1 of former warp thread is moved to add the high column position of yarn 1 place, will move to the high row of former warp thread 1 place on the high row warp thread 2 of former warp thread again; Displacement back result: add in the high row of former warp thread on right side, yarn position 2,4,6,8 positions and vacate, add the low row 1,3,5,7 of yarn and vacate;
(3) get 4 one threads, fasten every one thread two ends at the low row 1 of former warp thread respectively and add on the high row 2 of yarn, the low row 3 of former warp thread and add on the high row 4 of yarn, the low row 5 of former warp thread and add on the high row 6 of yarn, low row 7 of former warp thread and adding on the high row 8 of yarn;
Other gets 4 one threads, every one thread two ends is fastened respectively adding on low row 1 of yarn and the high row 2 of former warp thread, add on low row 3 of yarn and the high row 4 of former warp thread, add on low row 5 of yarn and the high row 6 of former warp thread, adding on low row 7 of yarn and the high row 8 of former warp thread;
B. the braiding of fabric siphunculus, the warp thread number of plies are 8 layers, and weft yarn adopts inlaid thread technology between the fabric siphunculus, with siphunculus circumference quadrisection, about 1/4 warp thread need adopt inlaid thread technology, the warp thread of last 1/4 part transits to 1/4 part on the siphunculus naturally by the warp thread of spheroid, about finishing behind 1/4 the weft yarn lining yarn, 1/4 fasten yarn down, fasten the yarn back that finishes and knit siphunculus, at siphunculus during, need 1/4 adding yarn about siphunculus for the first time around latitude around weft knitting, so that reach the requirement of fabric warp count, concrete operations are as follows:
(1) by the fabric inner surface to outer surface with warp thread opening successively, get single fiber and serve as a contrast into opening part, and carry out the urgent operation of filling density as weft yarn;
(2) finish aforesaid operations after, according to the curved characteristics of motion that connects structure of shallow friendship equipment is carried out the motion of height row, carry out the operation of weft yarn lining yarn again.Equally by the fabric inner surface to outer surface with warp thread opening successively, get single fiber and serve as a contrast into opening part, and carry out the urgent operation of filling density as weft yarn;
Repeat successively, successively lining is gone into weft yarn from inside to outside;
C. the braiding of the lower semisphere of fabric, the warp thread number of plies are 8 layers, subtract the minimizing that yarn is realized warp thread by displacement, and its concrete operations are as follows:
(1) will the shallow friendship of 2.5 dimensional fabrics curved the connection claims in the structure that adjacent two row warp thread are a pair of, and the row at that stock-traders' know-how yarn place that can see fabric exterior are defined as high row, then classifies low row as with its paired another, and high row exceed two positions than low row; All adopt to subtract yarn in pairs promptly high row 1 row, low row 1 row when subtracting yarn;
(2) will subtract yarn position left side keeps the warp thread 1 in the low row of warp thread and subtracts the high row 2 of yarn, keeps the warp thread 3 in the low row of warp thread and subtract the high row 4 of yarn, keeps the warp thread 5 in the low row of warp thread and subtract the high row 6 of yarn, keeps the warp thread 7 in the low row of warp thread and subtract the high row 8 locational warp thread of yarn and wipe out; Subtract the knot fruit: subtract the low row 1,3,5,7 of left side, yarn position reservation warp thread and vacate, subtract the high row 2,4,6,8 of yarn;
To subtract the warp thread 1 in the low row of yarn and subtract right side, yarn position and keep the high row 2 of warp thread, subtract the warp thread 3 in the low row of yarn and subtract right side, yarn position and keep the high row 4 of warp thread, subtract the warp thread 5 in the low row of yarn and subtract right side, yarn position and keep the high row 6 of warp thread, subtract the warp thread 7 in the low row of yarn and subtract right side, yarn position and keep the high row 8 of warp thread; Subtract the knot fruit: subtract the low row 1,3,5,7 of yarn and vacate, subtract right side, the yarn position low row 2,4,6,8 of reservation warp thread and vacate;
(3) will subtract the low row warp thread 2,4,6 in yarn position moves to and subtracts left side, yarn position and keep on low row 4,6,8 positions of warp thread, to subtract right side, yarn position and keep the high row warp thread 1 of warp thread and be displaced downwardly to and keep low row 2 places of warp thread, will subtract the high row warp thread 1 of yarn again and move to and subtract high column position 1 place, left side, yarn position.
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|---|---|---|---|---|
| CN102134786A (en) * | 2011-04-20 | 2011-07-27 | 中材科技股份有限公司 | Method for preparing corner preforming body by changing number of participating spindles |
| CN102134786B (en) * | 2011-04-20 | 2012-11-14 | 中材科技股份有限公司 | Method for preparing corner preforming body by changing number of participating spindles |
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| CN101503838A (en) | 2009-08-12 |
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