CN101058914A - Structure construction and spinning and manufacturing method for honeycomb three-dimensional integral hollow woven fabric - Google Patents

Abstract

The present invention discloses a three-dimensional woven fabric and the weaving method, in particular a structure constructing and weaving method of integral hollow woven fabric which constructing lateral section is three-dimensional honeycomb. The woven fabric in the invention is combined by the intersecting three-dimensional woven structure in the integral hollow three-dimensional hollow woven fabric; the three-dimensional woven fabric structure is combined and connected by a hexagon and a trapezium up and down saw from the angle of vertical section, so a pairs of hollow structure is formed; the woven method is shaping completely in one time, designing radial sectional drawing and dividing the structure recirculation into I, II, III, IV; then ensuring the warp and filling yarn arrangement mode and the filling insertion order in the structure of four areas of I, II, III, IV; last compiling into computer chain draft for weaving. The advantage of the present invention is it improves the enhancement performance greatly when used in composite materials. The present invention can be used in various sports, aviation and other high quality materials occasions widely.

Description

The structure construction of honeycomb type tri-dimensional stereo hollow woven thing and weaving method

Technical field

The present invention relates generally to 3 D stereo woven fabric and weaving method thereof, refers in particular to a kind of knot and builds structure construction and the weaving method that cross section is the honeycomb type tri-dimensional stereo hollow woven thing.

Background technology

At present, common cellular hollow core structures composite generally adopts non-textiles such as metal, plastics as honeycomb core, and panels such as this class comb core material and fabric reinforced composite is bonding and form the hollow core structures composite.This class composite when being subjected to impacting, disengagement easily between panel and the laminboard layer, slabbing and destroy.Also have in addition with the plain weave is that the multilayer hollow fabric that the basis forms forms the hollow core structures composite as core, because of being formed by the individual layer plain weave construction in the structure, so strengthening the property of its each layer is affected, and this class formation is bonding toward contact demand side flaggy fabric construction when making composite, and this structure easily breaks away from, causes integrally-built anti-delamination failure ability relatively poor between woven fabric structure core and panel layer when being hit.

Summary of the invention

The present invention is directed to deficiency of the prior art, proposed a kind of have superperformance and weaving method easy and simple to handle.

The present invention is achieved by following technical proposals:

The structure construction of honeycomb type tri-dimensional stereo hollow woven thing, the honeycomb type structure that forms with a hexagon and trapezoidal vertical access node is a warp cross section structure circulation, rely on hypotenuse to share mutual access node together between each loop structure, it is characterized in that: each limit constitutes by crossing three-dimensional woven institutional framework in the whole honeycomb type 3 D stereo hollow woven thing structure; From vertical cross section, this three-dimensional woven fabric structure is formed by a hexagon and a trapezoidal access node up and down, constitutes a pair of honeycomb; From warp cross section, this three-dimensional woven fabric structure is shared along the warp-wise extension by hypotenuse separately by a pair of right honeycomb and is formed; Two pairs of honeycombs constitute a structure circulation, and a structure circulation comprises four parts, is respectively access node section A, panel B, hypotenuse C and access node section D.

The structure construction of above-mentioned honeycomb type tri-dimensional stereo hollow woven thing, described access node section A is along vertical linking hexagon and trapezoidal limit; Panel B is the trapezoidal base that is presented on body structure surface; Hypotenuse C is hexagon or trapezoidal hypotenuse; Access node section D is the hexagonal base that is presented on body structure surface.

The structure construction of above-mentioned honeycomb type tri-dimensional stereo hollow woven thing, described hypotenuse C converges mode in the place to be had: wide-angle is converged, low-angle converges.

The structure construction of above-mentioned honeycomb type tri-dimensional stereo hollow woven thing, the access node mode has in described access node section D place, the accurate quadrature access node of two vertical yarns, the single accurate quadrature access node of yarn, quadrature access node of hanging down.

The weaving method of the structure construction of honeycomb type tri-dimensional stereo hollow woven thing is characterized in that being undertaken by following step:

(1) the warp cross section figure design with the honeycomb type tri-dimensional stereo hollow woven thing obtains, and gets a structure circulation and carry out subregion I, II, III, IV;

(2) warp thread in I, II, III, four districts of IV trend is determined that arrangement mode and wefting insertion order through weft yarn in the structure are determined according to different demands;

(3) be the thaumatropy in above-mentioned I, II, III, four districts of IV last machine pegging plan;

(4) weave to finish and get final product.

The length on each limit and thickness can be determined as required in the structure of the present invention, by used fineness of yarn and density thickness are changed into the weft yarn number of plies of counterpart, length are changed into the individual layer weft yarn radical of counterpart.For forming stable desired structure shape, a coordinate design relation should be arranged between the length of each several part, between the thickness.

Each limit of hexagon and panel layer all adopts the orthogonal stereo machine-knitted structure to constitute in the alveolate texture of the present invention, and the connected mode on the interior hexagon of structure and each limit of panel layer has been carried out special structure to satisfy different application requirements.

The structure chart that structure is finished has designed the introducing order of parallel, and changes into the required pegging plan of looming weaving according to this special wefting insertion order, and successfully weaves on Rapier looms.

Honeycomb type tri-dimensional stereo hollow woven thing structure, the honeycomb type structure that forms with a hexagon and trapezoidal vertical access node is a warp cross section structure circulation, rely on hypotenuse to share mutual access node together between each loop structure, overall structure can a weaving on loom.

This structure is from vertical cross section, and it is vertically formed this three-dimensional woven fabric structure by a hexagon and a trapezoidal access node up and down, is called a pair of honeycomb; From warp cross section, this three-dimensional woven fabric structure is shared along the warp-wise extension by hypotenuse separately by a pair of right honeycomb and is formed.Two pairs of honeycombs constitute a structure circulation, and a structure circulation comprises four parts, is respectively access node section A, panel B, hypotenuse C and access node section D.Access node section A is meant along vertical linking hexagon and trapezoidal limit; Panel B is the trapezoidal base that is presented on body structure surface; Hypotenuse C general reference hexagon or trapezoidal hypotenuse; Access node section D is the hexagonal base that is presented on body structure surface.

In the three-dimensional integral woven fabric structure, the access node mode of weft yarn and vertical yarn has orthohormbic structure, accurate orthohormbic structure and angle interlock.Adopt the construction unit of quadrature access node tissue to have effect preferably among the present invention.

Constructed three-dimensional integral woven fabric hexagon sandwich structure is made up of access node section A, panel B, four parts of hypotenuse C, access node section D, and the length of various piece, thickness and collocation each other all will influence the shape of the final sandwich structure that forms.The several structural parameters that relate generally to are described as follows:

1) access node section A

The length of access node section A is called access node length A section individual layer weft yarn radical (root) R _ARepresent that the thickness of access node section A is called access node thickness, with this section weft yarn number of plies (layer) L _ARepresent.

2) panel B

The length of panel B, thickness are respectively with the panel B individual layer weft yarn radical R of place _B, weft yarn number of plies L _BRepresent.The length of panel B and directly influence the tightness of fabric face with the collocation of A, C length, plate thickness is 2 layers in the structure that designs among the present invention.

3) hypotenuse C

The length of hypotenuse C, thickness are respectively with the hypotenuse C individual layer weft yarn radical R of place _C, weft yarn number of plies L _CRepresent.Hypotenuse thickness is 2 layers in the structure that designs among the present invention.

Two hypotenuses converge and intert mutually access node and become an integral body at the access node place, hypotenuse C converges mode in the place to be had: wide-angle is converged; Low-angle converges, and under the identical prerequisite of other parameters, when adopting low-angle to converge mode, sandwich structure access node place is more firm, is because be subjected to the fixation of the vertical yarn of two groups.

4) access node section D

The length of access node section D, thickness are used access node section D individual layer weft yarn radical R respectively _D, weft yarn number of plies L _DRepresent.Its vertical yarn of 11 kinds of three-dimensional sandwich structures of this paper design all with the mutual access node of multilayer weft yarn, the access node mode also will have influence on the sandwich structure of final formation, D place access node mode can be divided into: the accurate quadrature access node of two vertical yarns; Single accurate quadrature access node of yarn that hangs down; The quadrature access node.

5) honeycomb type tri-dimensional stereo hollow woven thing structural parameters determines

Honeycomb type tri-dimensional stereo hollow woven thing hexagon sandwich structure is with the hole shape geometry, through weft yarn fineness and relevant through factors such as weft yarn filling densities, the relation of theory analysis description architecture parameter and hole shape effect.

Suppose that the filling density of honeycomb type tri-dimensional stereo hollow woven thing is a ρ (root/cm); A, B, each limit length of side of C, D are l _A, l _B, l _C, l _DAnd establish l (cm), _A=l _DHaving established each limit individual layer weft yarn radical is R _A, R _B, R _C, R _D(root); Each boundary layer number is L _A, L _B, L _C, L _D(layer); Each limit individual layer filling density is ρ _A, ρ _B, ρ _C, ρ _D(root/cm).In the warp-wise structure as shown in Figure 5, be divided into totally four sections of I, II, III, IV according to weaving order, total filling density of weaving each section is respectively ρ ₁, ρ ₂, ρ ₃, ρ ₄Root/cm).

ρ ₁＝L _Dρ _D+L _Aρ _A+L _Bρ _B；

${\mathrm{\&rho;}}_2=2L_B{\mathrm{\&rho;}}_B+3L_C\&CenterDot;\frac{R_C}{\frac{l_B-{\mathrm{<figure-callout\; id="2"\; label="l\; A"\; filenames="A20071006859100092.png,A20071006859100101.png"\; state="\{\{state\}\}">l</figure-callout>}}_A}{2}}=2L_B{\mathrm{\&rho;}}_B+\frac{6L_C{\&CenterDot;\mathrm{\&rho;}}_C\&CenterDot;l_C}{l_B-l_A};$

ρ ₃＝ρ ₁；

ρ ₄＝ρ ₂；

The mean value that four sections filling densities are got in the average filling density of fabric is promptly:

$\mathrm{\&rho;}=\frac{{\mathrm{\&rho;}}_1+{\mathrm{\&rho;}}_2+{\mathrm{\&rho;}}_3+{\mathrm{\&rho;}}_4}{4}=\frac{{\mathrm{\&rho;}}_1+{\mathrm{\&rho;}}_2}{2}=\frac{L_A{\mathrm{\&rho;}}_A+3L_B{\mathrm{\&rho;}}_B+L_D{\mathrm{\&rho;}}_{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A20071006859100092.png,A20071006859100101.png"\; state="\{\{state\}\}">D</figure-callout>}}}{2}+\frac{3L_C{\&CenterDot;\mathrm{\&rho;}}_C\&CenterDot;l_C}{l_B-l_A}$

The final hole shape effect that forms of three-dimensional sandwich fabric is mainly by length of side l _A, l _B, l _CDecision, as can be seen from the above equation, filling density ρ, each boundary layer of the length of side and fabric are counted L _A, L _B, L _C, L _DAnd each limit filling density ρ _A, ρ _B, ρ _C, ρ _DForm the relation of coordinating mutually.

Beneficial effect: the present invention is a fundamental construction honeycomb type tri-dimensional stereo hollow woven thing with the three-dimensional institutional framework of three-dimensional orthogonal, each layer is made up of two layers of three-dimensional orthogonal stereochemical structure of forming at least, improved its strengthening the property in composite greatly.Be an integral body because of strengthening structure simultaneously, significantly improved the ability that strengthens structure shock resistance delamination failure in composite.

Description of drawings

The cellular three-dimension integrally hollow woven of Fig. 1 thing structural representation

The construction unit of Fig. 23 D stereo quadrature access node tissue

Fig. 3 structure place converges that mode a wide-angle is converged, the b low-angle converges

The two accurate quadrature access nodes of vertical yarn of Fig. 4 access node section D access node mode a of place, the single accurate quadrature access node of yarn, the c quadrature access node of hanging down of b

Fig. 5 honeycomb type tri-dimensional stereo hollow sandwich structure warp cross section figure and subregion thereof, warp thread trend

Fig. 6 honeycomb type tri-dimensional stereo hollow woven thing pegging plan

Fig. 7 honeycomb type tri-dimensional stereo hollow woven thing full pattern

The specific embodiment

Below in conjunction with accompanying drawing, enforcement of the present invention is specified:

According to weaving order, the hexagon sandwich structure can be divided into four sections to be weaved, and weaves by the order of I, II, III, IV among Fig. 5.Simultaneously each root warp thread and weft yarn are marked by arrangement or wefting insertion order at loom, as Fig. 5.

Fig. 5 is that the warp thread of an institutional framework circulation moves towards figure, and the figure middle polyline is represented warp thread, and circle is represented weft yarn.The warp thread circulation of this tri-dimensional stereo hollow woven fabric texture is 15, and the weft yarn circulation is 188, needs 15 heald frames at least and weaves.From top to bottom overlook this structure, shown in arrow among the figure.Warp thread forms one through interlacing point when being positioned at the weft yarn top, otherwise warp thread forms a latitude interlacing point when being positioned at the weft yarn below.Obtain corresponding pegging plan by that analogy as shown in Figure 6, and can on Rapier looms, successfully weave with machine on this.

Because the weave shrinkage difference of each warp thread in the tissue is so warp thread need divide into groups to control its tension force and warp run-in in weaving.Need consider according to concrete structure in working control.Structure shown in Figure 5 can be divided into warp thread two groups in weaving, warp thread 1,2,3 and 12,13,15 is first group, warp thread 4,5,6,7,8,9,10,11,14 is second group, and the warp run-in of two groups of warp thread and tension force need to adjust according to the actual situation of weaving.

Fibrous raw material can adopt continuous glass fibre fiber, carbon fiber, aramid fiber, polyster fibre, nylon fibre etc., and the fineness scope is 10tex-2000tex.

Claims (5)

1, the structure construction of honeycomb type tri-dimensional stereo hollow woven thing, the honeycomb type structure that forms with a hexagon and trapezoidal vertical access node is a warp cross section structure circulation, rely on hypotenuse to share mutual access node together between each loop structure, it is characterized in that: each limit constitutes by crossing three-dimensional woven institutional framework in the whole honeycomb type 3 D stereo hollow woven thing structure; From vertical cross section, this three-dimensional woven fabric structure is formed by a hexagon and a trapezoidal access node up and down, constitutes a pair of honeycomb; From warp cross section, this three-dimensional woven fabric structure is shared along the warp-wise extension by hypotenuse separately by a pair of right honeycomb and is formed; Two pairs of honeycombs constitute a structure circulation, and a structure circulation comprises four parts, is respectively access node section A, panel B, hypotenuse C and access node section D.

2, the structure construction of honeycomb type tri-dimensional stereo hollow woven thing according to claim 1 is characterized in that described access node section A is along vertical linking hexagon and trapezoidal limit; Panel B is the trapezoidal base that is presented on body structure surface; Hypotenuse C is hexagon or trapezoidal hypotenuse; Access node section D is the hexagonal base that is presented on body structure surface.

3, the structure construction of honeycomb type tri-dimensional stereo hollow woven thing according to claim 1, it is characterized in that described hypotenuse C place converges mode and has: wide-angle is converged, low-angle converges.

4, the structure construction of honeycomb type tri-dimensional stereo hollow woven thing according to claim 1 is characterized in that described access node section D place access node mode has, the accurate quadrature access node of two vertical yarns, the single accurate quadrature access node of yarn, quadrature access node of hanging down.

5, the weaving method of the structure construction of honeycomb type tri-dimensional stereo hollow woven thing is characterized in that being undertaken by following step:

(1) the warp cross section figure design with the honeycomb type tri-dimensional stereo hollow woven thing obtains, and gets a structure circulation and carry out subregion I, II, III, IV;

(2) warp thread in I, II, III, four districts of IV trend is determined that arrangement mode and wefting insertion order through weft yarn in the structure are determined according to different demands;

(3) be the thaumatropy in above-mentioned I, II, III, four districts of IV last machine pegging plan;

(4) weave to finish and get final product.

Images