CN101476205B - Production process of multi-shaft warp knitting reinforced composite material - Google Patents
Production process of multi-shaft warp knitting reinforced composite material Download PDFInfo
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- CN101476205B CN101476205B CN2009100281714A CN200910028171A CN101476205B CN 101476205 B CN101476205 B CN 101476205B CN 2009100281714 A CN2009100281714 A CN 2009100281714A CN 200910028171 A CN200910028171 A CN 200910028171A CN 101476205 B CN101476205 B CN 101476205B
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Abstract
The invention relates to a processing technique for processing multi-axial warp knitting enhancing composite material which includes working procedures as follows: raw material purchase, inspecting, warping, inspecting, warp knitting, inspecting and storing ready product. Raw material enters warp knitting procedure after passes inspection, firstly gaiting binder yarn, warp yarn, filling yarn, 0 degree yarn and 90 degree yarn, and also selecting binder yarn and yarn of needed yarn layer for gaiting according with design requirement, secondly dividing yarn, threading, filling yarn and 90 degree yarn also pass through a tension sheet and a constant tension control device besides normal passing through various porcelain eye, dividing yarn board and transfer roll in the threading procedure, various yarn flat loading after threading, processing knitting after passing inspection, moving distance of placing filling yarn device of a placing filling yarn dolly is less than width of filling yarn of placing filling yarn device of the placing filling yarn dolly. The multi-axial warp knitting enhancing material processed by the processing technique provided by the invention has advantages of filling yarn with even tension, stable texture angle performance, more even filling yarn placing and reducing clearance between cloth covers.
Description
Technical field
The present invention relates to the production method of textiles, especially a kind of production technology of multi-shaft warp knitting reinforced composite material
Background technology
Multi-axial Warp Knitted Fabric for Composites is widely used in makes glass fiber reinforced plastics product etc.; And the performance of goods depends mainly on through compiling performance of composites; Multi-axial Warp Knitted Fabric for Composites ubiquity in the market is inhomogeneous through weft tension, the uneven phenomenon of fabric angle stability difference and yarn gap, and these defectives have directly influenced the physical property of product; Intensity is on the low side, and inevitablely by the finished product of this material also be that intensity is low, easy fracture, service life be short.
Summary of the invention
The object of the invention addresses the aforementioned drawbacks exactly, and provides a kind of production even through weft tension, and the fabric angular properties is stable, and yarn is laid more even, has reduced the production technology of the multi-shaft warp knitting reinforced composite material in the gap between cloth cover.
For the technical scheme that realizes the object of the invention is a kind of production technology of multi-shaft warp knitting reinforced composite material; Comprise materials procurement, check, warping, check, through braiding make, check, finished product warehouse-in; Raw material get into through braiding after the assay was approved through warping and make operation; Its innovative point is: it at first is axle on the bundled yarn, dividing sinker that operation is made in the warp braiding, entry, go up axle can go up warp thread, weft yarn simultaneously as requested; Also can go up warp thread or weft yarn separately; 0 ° of yarn and 90 ° of yarns also are to select for use according to designing requirement; Warp thread is entried each road porcelain eye of process, dividing sinker plate, transition roller, dividing sinker plate, laying-in sheet to pulling roll, and weft yarn is entried and harrowed through each road porcelain eye, tension piece, transition roller constant tension control device, Weft laying trolley, dividing sinker porcelain eye, dividing sinker needle plate to weft yarn, and 0 ° of yarn is entried through yarn creel, each road porcelain eye, transition roller, dividing sinker plate to pulling roll; 90 ° of yarns are entried and are harrowed through yarn creel, each road porcelain eye, tension piece, transition roller, constant tension control device, Weft laying trolley, dividing sinker porcelain eye, dividing sinker needle plate to weft yarn; Bundled yarn, warp thread, weft yarn, yarn are all put on the back flatcar, and flat good car carries out next step driving after be up to the standards, and weaves; Make in the process through braiding, the displacement of Weft laying trolley upper berth latitude device is worn the width of parallel less than Weft laying trolley upper berth latitude device.
Every weft yarn all had an independent tension piece control during said weft yarn was entried.
Many weft yarns can penetrate a constant tension control device during said weft yarn was entried.
Said 0 ° and 90 ° of yarns are 1～2 inch 1, every layer of grammes per square metre 2 gram, and layer position, shop is between ± 45 ° of yarns.
The distance that said Weft laying trolley upper berth latitude device moves at every turn is shop latitude device the half the of width of entrying, and makes yarn shop latitude overlapping.
Raw material selection low elastic polyester filament (polyester fiber) is as bundled yarn, and glass fibre is as warp thread, weft yarn.
The multi-shaft warp knitting reinforced composite material that adopts production technology of the present invention to produce; Because warp thread and weft yarn all pass through tension adjustment and control in entrying, make that in weaving process warp thread and weft yarn are in even tension all the time; Stable status, thus the physical property of fabric guaranteed.The shop layer operation that the position increases by 0 ° and 90 ° yarn between ° weft yarn shop layer of our right in the braiding process ± 45 in addition just played the effect of rock-steady structure, well guaranteed the stable of each layer of fabric angle and fabric width and then guaranteed each item performance and the presentation quality of fabric.In the braiding process, adopting shop latitude device displacement is the half this technology of wearing the parallel width simultaneously, and making each the moving of shop latitude device all is the overlapping of yarn; Do like this and make the laying of yarn yarn more even; The braiding style is finer and smoother, and cloth cover is more smooth, and the gap between cloth cover is littler.
The specific embodiment
Be described in further detail below in conjunction with the production technology of specific embodiment multi-shaft warp knitting reinforced composite material of the present invention.
Embodiment 1: produce the E-DB400-5 composite.
One, materials procurement
Raw material selection low elastic polyester filament (polyester fiber) is as bundled yarn, and glass fibre is as warp thread, weft yarn
Low elastic polyester filament (polyester fiber) specification is that 8.3 Tekes and fibre glass roving specification are that 200 Tekes, yarn are 68 Tekes, through being up to the standards into raw material silo.
Two, warping
Qualified low elastic polyester filament is carried out warping; The order of entrying gets into through braiding through after the assay was approved and makes operation for tension pulley, porcelain eye, tension force porcelain knob, transmission arm porcelain circle, holder yarn rod porcelain eye, broken yarn self-stop, contact chip eye, collection filament plate porcelain eye, separating needle, tension roller, hair appearance, separating needle, storage yarn separating needle, lubricator, herringbone reed separating needle, coiled hair are wound into 125 umbers and 30000 meters long coiled hairs.
Three, make through braiding
A, warp braiding are made operation and at first are axle on the bundled yarn, dividing sinker, entry; Last axle is gone up warp thread, weft yarn simultaneously; Warp thread is entried through each road porcelain eye, dividing sinker plate, transition roller, dividing sinker plate, laying-in sheet to pulling roll; Weft yarn is entried and is harrowed through each road porcelain eye, tension piece, transition roller, constant tension control device, Weft laying trolley, dividing sinker porcelain eye, dividing sinker needle plate to weft yarn; 0 ° of yarn is entried process yarn creel, each road porcelain eye, transition roller, dividing sinker plate to pulling roll, and 90 ° of yarns are entried and harrowed through yarn creel, each road porcelain eye, tension piece, transition roller, constant tension control device, Weft laying trolley, dividing sinker porcelain eye, dividing sinker needle plate to weft yarn, and bundled yarn, warp thread, weft yarn, yarn are all put on the back flatcar; Flat good car carries out next step driving after be up to the standards, and weaves;
B, make in the process through braiding, the displacement of Weft laying trolley upper berth latitude device is worn the width of parallel less than Weft laying trolley upper berth latitude device, makes yarn shop latitude overlapping.
For solving through the even problem of weft tension.Warp thread is before entrying, and warp tension is adjusted through 2 parallel thin stainless steel tubes, and plane and horizontal plane that two parallel stainless steel tubes form form angle; Because a warp thread creel has 4～5 layers, a general equipment will be joined 10～14 row's creels could satisfy a door width of cloth requirement, layer with layer, between row and row warp tension is all variant; Yarn is the S shape during through 2 parallel thin stainless steel tubes to be passed through, and the tension force size is adjusted with the angle of horizontal plane formation in the plane that utilizes adjustment two parallel stainless steel tubes to form, and entrys after making uniform tension in order again; Weft tension control: every weft yarn all has an independent tension piece control, can all adjust to identical tension force to every one thread like this, during the latitude of weft yarn shop; Because tricot is radially to weave, radially clot is so broadwise can only back and forth be laid yarn back and forth with certain width; General laying width is 6 inches or 8 inches, lays the Weft laying trolley of yarn and is controlled by servomotor, and Weft laying trolley moves back and forth at certain width internal speed-changing; And the variation of yarn speed also can cause yarn tension to change; We have increased the constant tension control device that can control many weft yarns for this reason, and this device benefit is that fast its motion of Weft laying trolley motion is slow; Slow its motion of Weft laying trolley motion is fast; Make yarn be at the uniform velocity state all the time, well kept the even, stable of yarn tension, thereby guaranteed the physical property of fabric.
For the laying that makes yarn more even; Weft yarn is laid 8 inches of width, and shop latitude device threading is for wear 1 sky 1,4 inches of the distances that Weft laying trolley upper berth latitude device moves at every turn; The distance that Weft laying trolley upper berth latitude device moves at every turn is Weft laying trolley upper berth latitude device the half the of width of entrying, and makes yarn shop latitude overlapping.
Said 0 ° and 90 ° of yarns are 1～2 inch 1, every layer of grammes per square metre 2 gram, and layer position, shop is between ± 45 ° of yarns.
Become the characteristics of fabric stability poor (product particularly ± 45 ° is not with the product of warp thread or 90 ° of weft yarns) to each angle yarns, we are through increasing yarns to stablize its structure at 0 ° and 90 °.Yarn is generally 1～2 inch 1, and every layer of grammes per square metre is about 2 grams, and layer position, shop is between ± 45 ° of yarns, so can't impact fabric property and grammes per square metre.Such as ± 45 ° product, lay yarns through weave after at 0 ° with 90 ° of directions by certain interval, yarn just is fixed on ° two-layer centre, fabric ± 45; Clot just has certain tractive force by 0 ° of direction clot in 0 ° of direction, if there is not the yarn of 0 ° and 90 ° direction; Fabric just has certain extension in 0 ° of direction when clot, can cause 0 ° of direction elongated, and 90 ° of directions narrow down; Make the angle (± 45 °) that lays in advance change; Generally can may become ± 40 °, so just can not reach in advance designing requirement fully product less than ± 45 °.After 0 ° and 90 ° of directions increase yarn; When clot, the power overwhelming majority of 0 ° of direction clot is born by yarn, and 90 ° of direction yarns are through after weaving; Well guaranteed the stability of fabric width; The yarn of ± 45 ° of directions does not stress basically, has so well guaranteed ± angle stability of 45 ° of yarns, thereby has guaranteed each item performance and the presentation quality of fabric.
For the weft yarn clearance issues; It is the key issue that multi-shaft warp knitting reinforced composite material is difficult to solution in process of production; Particularly for the low weight fabric of grammes per square metre; The weft yarn clearance issues is particularly serious, and the weft yarn gap acquires a certain degree and not only influences appearance of fabrics and the more important thing is and influenced each item of fabric performance.We are through constantly groping research; General conventional production method is that shop latitude device is worn how wide yarn shop latitude device and how widely just moved, and shop latitude device is generally all worn the weft yarn of 6 inches or 8 inches, generally moves 6 inches or 8 inches so spread the latitude device; Shop latitude device moves about and will have the gap between the twice yarn or overlap like this; General gap all has more than 5 millimeters, and the frequency of occurrences is very high, and every meter fabric has 3～5.Wear 1 sky 1 when we take to entry, wear 8 inches, but shop latitude device moves 4 inches of time shifts; Making has 4 inches yarn overlapping, is to wear 1 sky 1 owing to entry, so fabric weight is constant; 8 inches shop latitude technologies of moving 4 inches are worn in employing, and each the moving of shop latitude device all is the overlapping of yarn, and the laying of the yarn that is like this is more even; Style is finer and smoother during braiding, and cloth cover is more smooth, and the gap between cloth cover is littler; And the frequency frequency that the gap occurs reduces greatly, is generally 5～8 meters and just has an interspace, and the general gap that produces is all less than 3 millimeters.
More than work and accomplish after quality inspection is tested and qualifiedly just can normally driven to weave.
Four, finished product warehouse-in
Weave the product warp of producing well and go into warehouse for finished product after the assay was approved.
Embodiment 2: produce the E-DB800-5 composite
One, materials procurement
Raw material selection low elastic polyester filament (polyester fiber) is as bundled yarn, and glass fibre is as weft yarn.
Low elastic polyester filament (polyester fiber) specification is that 8.3 Tekes and glass fibre specification are that 600 Tekes, yarn are 68 Tekes, through being up to the standards into raw material silo.
Two, warping
With embodiment 1.
Three, make through braiding
This products does not have thread layer, has only weft yarn and thread layers.
A, make operation and at first be axle on the bundled yarn, dividing sinker, entry, the entrying of weft yarn, 0 ° and 90 ° thread layers with embodiment 1. through braiding
B, weft yarn are laid 8 inches of width; Shop latitude device threading is 1 empty 1 for wearing, 4 inches of the distances that Weft laying trolley upper berth latitude device moves at every turn, and weft yarn is laid and spread the latitude angle for ground floor is 45 °; Second layer shop latitude angle is-45 °, and 0 ° and 90 ° of thread layers are between ± 45 ° of weft layers.
Other operation is identical with embodiment 1.
Claims (6)
1. the production technology of a multi-shaft warp knitting reinforced composite material, comprise materials procurement, check, warping, check, through braiding make, check, finished product warehouse-in, raw material get into through braiding after the assay was approved through warping and make operation, it is characterized in that:
A, warp braiding are made operation and at first are axle on the bundled yarn, dividing sinker, entry; Last axle can be gone up warp thread, weft yarn simultaneously as requested; Also can go up warp thread or weft yarn separately; 0 ° of yarn and 90 ° of yarns also are to select for use according to designing requirement; Warp thread is entried each road porcelain eye of process, dividing sinker plate, transition roller, dividing sinker plate, laying-in sheet to pulling roll, and weft yarn is entried and harrowed through each road porcelain eye, tension piece, transition roller, constant tension control device, Weft laying trolley, dividing sinker porcelain eye, dividing sinker needle plate to weft yarn, and 0 ° of yarn is entried through yarn creel, each road porcelain eye, transition roller, dividing sinker plate to pulling roll; 90 ° of yarns are entried and are harrowed through yarn creel, each road porcelain eye, tension piece, transition roller, constant tension control device, Weft laying trolley, dividing sinker porcelain eye, dividing sinker needle plate to weft yarn; Yarn is all put on the back flatcar, and flat good car carries out next step driving after be up to the standards, and weaves;
B, warp braiding are made in the process, and the displacement of Weft laying trolley upper berth latitude device is worn the width of parallel less than Weft laying trolley upper berth latitude device.
2. the production technology of multi-shaft warp knitting reinforced composite material according to claim 1 is characterized in that: every weft yarn all had an independent tension piece control during said weft yarn was entried.
3. the production technology of multi-shaft warp knitting reinforced composite material according to claim 1 and 2, it is characterized in that: many weft yarns penetrated a constant tension control device during said weft yarn was entried.
4. the production technology of multi-shaft warp knitting reinforced composite material according to claim 1, it is characterized in that: said 0 ° of yarn and 90 ° of yarns are 1～2 inch 1, and every layer of grammes per square metre is less than 2 grams, and layer position, shop is between ± 45 ° of yarns.
5. the production technology of multi-shaft warp knitting reinforced composite material according to claim 1 is characterized in that: the distance that said Weft laying trolley upper berth latitude device moves at every turn is Weft laying trolley upper berth latitude device the half the of width of entrying.
6. the production technology of multi-shaft warp knitting reinforced composite material according to claim 1, it is characterized in that: the raw material selection low elastic polyester filament is as bundled yarn, and glass fibre is as warp thread, weft yarn.
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| CN103161021A (en) * | 2013-04-02 | 2013-06-19 | 浙江联洋复合材料有限公司 | Multi-axial warp knitting fabric and manufacturing method thereof |
| WO2013177731A1 (en) * | 2012-05-30 | 2013-12-05 | 常州市润源经编机械有限公司 | Forming machine for warp and weft superimposed non-woven composite fabric |
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