CN106346635B - A kind of preparation method of high density rotary type needle thorn preform - Google Patents
A kind of preparation method of high density rotary type needle thorn preform Download PDFInfo
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- CN106346635B CN106346635B CN201610708249.7A CN201610708249A CN106346635B CN 106346635 B CN106346635 B CN 106346635B CN 201610708249 A CN201610708249 A CN 201610708249A CN 106346635 B CN106346635 B CN 106346635B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/14—Making preforms characterised by structure or composition
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H18/00—Needling machines
- D04H18/02—Needling machines with needles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Manufacturing & Machinery (AREA)
- Nonwoven Fabrics (AREA)
Abstract
A kind of preparation method of high density rotary type needle thorn preform, including the following steps: (1) wrap up in insulation blanket (30) outside core model (20)；(2) according to the elementary layer (80) for core model (20) the expanded view preparation respective shapes that do not bind and bind；(3) elementary layer (80) is rolled in pierce by the needle tartar (50) of 3 needles with eedle outside insulation blanket (30) and fix；(4) do not bind three row's prickers (90) of rotary type preform (40) horizontal needing machine along generatrix direction integral pin pierce, rotate a step pitch again needle pierce；The rotary type preform (40) that binds is then elementary layer (89) to be cut into fan-shaped and padmasana, it is alternately superimposed centered on top, first pierced with the needle tartar (50) of 3 needles from top to bottom from coil to coil needle, the needle tartar (50) of 7 needles or even 18 needles is changed after reaching certain thickness, until reaching thickness requirement.It is big, complex-shaped using rotary type needle prepared by the present invention thorn preform (40) density height, interlayer bonding strength, it can be applied to high temperature filtration, heat-resistant composite material.
Description
Technical field
The present invention relates to a kind of preparation methods of rotary type needle thorn preform, especially do not bind or bind, high density
Needle pierces the preparation method of preform, belongs to fiber assembly technical field.
Background technique
The special-shaped preform such as cone shaped, semicircle, pyramid, concave waist pyramid is high temperature is anti-, heat-insulated composite wood at present
Using relatively broad, special-shaped preform plays key effect as composite material reinforcement body, to its performance boost in material field.
The preparation process of the enhancing preform now used is divided into two major classes: net tire and cloth needle pierce forming technology, and staple fibre is woven into
Shape technique.Cloth needling process is added to solve quick, low cost manufacturing using net tire, but its bulk density and interlayer bonding strength are inclined
It is low, as can satisfy requirement on the not high component of the mechanical property requirements such as high temperature insulating composite material, but for high temperature
Heat-resistant composite material, it is desirable that the component of bulk density and interlayer high mechanical properties, prior art are unable to satisfy requirement；Using fixed length
The preform of fibrage forming is able to satisfy making for high temperature heat-resistant composite material in bulk density and interlayer mechanical property
With requiring, but its manufacturing cycle is long, at high cost, is unable to satisfy large batch of application demand, and to realize its quickly, low cost system
It is standby, since the forming technology braiding path length, process are more, between process are discontinuous operation, realize the difficulty of mechanization, automation
It is very big, therefore realize that the preparation of its fast and low-cost is substantially infeasible in a short time.
Chinese patent notification number CN1255600C, the day for announcing are on Mays 10th, 2006, and entitled ' one kind can acupuncture nonwoven
Fabric and quasi three-dimensional prefab ' in disclose it is a kind of by the fine base carbon fibre prefabricated sheets adhesive-bonded fabric of polypropylene and woven cloth, with
And through multi-turn lamination needling shape at quasi three-dimensional prefab, overcome and have using the fine base of strip carbon fiber precursor polypropylene
Preoxidized fiber (OPF) be main lamination needle pierce prefabricated component defect, the invention focus on directly with carbon fiber prepare needle thorn it is prefabricated
Part, reduce also needs to be carbonized again after preparing Nomex with the fine base preoxidized fiber (OPF) of carbon fiber precursor polypropylene, make its density and
Performance is not easy the problems such as guaranteeing, substantially reduces the total manufacturing cost of Nomex and period, but to high density Nomex and not
The preparation of the rotary type needle that binds and bind thorn preform is not directed to.
Chinese patent notification number CN103668779A, the day for announcing are on March 26th, 2014, and entitled ' a kind of silicon carbide is fine
Dimension Nomex and preparation method thereof ' in disclose a kind of silicon carbide fiber needle felt and preparation method thereof, using single layer needle thorn and
Lamination needling process, while Z-direction mechanical property greatly improves, X-Y to mechanical property and thermophysical property also more non-needle
Thorn felt significantly improves, and the patent is just for silicon carbide fiber needle felt, and the fundamental technology or felt and cloth used, in this technique
On the basis of innovated, and promotion is realized on fibrous material, with silicon carbide fibre instead of carbon fiber, using the invention
The silicon carbide Nomex X-Y of preparation to mechanical property and thermophysical property significantly improve, but its bulk density is relatively low, is only applicable in
In on the composite material component that high temperature filtration, heat-insulated etc. need low-density, for high density Nomex and does not bind and bind
The invention for preparing of rotary type needle thorn preform is not directed to.
The present invention is innovated using two approach of structure and technique, replaces net tire to provide Z-direction with woven roving in structure
Fiber is connected, the pore size of woven roving can be according to Connection Density and Intensity Design；Base fabric type is more, existing unidirectional cloth, two
Wei Bu (plain weave, twill, satin weave and its variation tissue), 2.5 dimensions (shallowly hand over curved, shallowly hand over direct connection, deep connection and its variant structure), just
Hand over three-dimensional and 3 D multi-directional etc., can according to product density and interlayer performance index, preferably base fabric structure and surface density and determination with
The composite structure pattern of woven roving；With the needle stichopus japonicus number of design (needle pierces breadth, density, depth etc.) preparation unit layer, through etc. it is quiet
It presses accurate control unit thickness degree and eliminates internal stress, set respectively using horizontal and vertical Nomex further according to different product shape
Standby and its matching tooling completes the preparation of high density rotary type needle thorn preform.Using the achievable base fabric of the present invention and woven roving
Combination can design, product density and interlayer switching performance can design, shape (bind and do not bind) and thickness can design,
Provide it is a kind of quickly, low cost preparation do not bind or bind the method for rotary type needle thorn preform, can be in high temperature filtration, anti-
It is applied on hot composite material component.
Summary of the invention
The technical problem to be solved in the present invention is to the Nomex density that net tire in the prior art adds cloth needling process to prepare
It is relatively low with interlayer switching performance；Though long fibre integral weaving technique is able to satisfy density and interlayer switching performance requirement, it is prepared
Period length, the problems such as being unable to satisfy typical products in mass production demand at high cost propose that a kind of high density rotary type needle pierces preform
Preparation method.
A kind of preparation method of high density rotary type needle thorn preform of the present invention includes the following steps:
(1) horizontal acupuncture apparatus is used, insulation blanket (30) are cut according to the size of product, make its length and perimeter and core model
(20) identical, thickness is greater than depth of needling 2mm, and the interior omnipotent gluing of brush is rolled in core model (20) outer surface；
(2) central axis (70) for adjusting fixed core model (20), makes it be equal to core model (20) semi-cone angle with horizontal line angle, protects
It is parallel with needle bed (60) plane to hold core model (20) bus；
(3) needle stichopus japonicus number is adjusted, is the corresponding rotation angle of 3cm the rotation step distance adjustment of core model (20) central axis (70),
The needle tartar (50) for first installing 3 needles, prepares the needle tartar (50) of 7 and 18 needles；
(4) rectangle is prepared according to core model (20) expanded view that do not bind or elementary layer (80) that fan-shaped size is cut；
(5) elementary layer (80) is wrapped in insulation blanket (30) surface, is clamped with flexible frock, smooths compacting elementary layer
(80), elementary layer (80) is made to be tightly attached to insulation blanket (30) surface, it is solid being pierced at its overlapping the slot with needle tartar (50) needle of 3 needles
It is fixed, it is implanted into three row's prickers (90) on needle bed (60), adjusts needle stichopus japonicus number, pierces the corresponding center primary rotation 3cm by every needle
Angle step pitch is pierced along generatrix direction integral pin；
(6) every to have pierced one layer of height that reduce a core model central axis (70), decreasing value is on current core model (20)
Increased elementary layer (80) thickness；High density can be prepared by needle stichopus japonicus number and elementary layer (80) number of plies of setting not binding revolution
Type needle pierces preform；
(7) it uses vertical acupuncture apparatus instead, is the corresponding rotation angle of 3cm the step distance adjustment of rotary table (10), enters
First unit layer (80) needle thorn prepares the elementary layer (80) that fan-shaped size is cut, Jiang Qibao according to the core model that binds (20) expanded view
Be rolled in insulation blanket (30) surface, with the needle tartar (50) of 3 needles at elementary layer (80) overlapping the slot and other arbitrary surfaces take it is more
Click through the hand-manipulating of needle thorn, be fixed as it with insulation blanket (30) excellent, then with flexible frock smooth compacting elementary layer (80), make its be close to every
From felt (30) surface；With the needle tartar (50) of 3 needles, needle stichopus japonicus number is adjusted, pierces the corresponding center primary rotation 3cm by every needle
Along the circumferential direction needle pierces angle step pitch, then by sequence from coil to coil needle thorn from top to bottom, until core model (20) bottom is finished up, and marks
Note；
(8) second unit layer needle pierces, and prepares the elementary layer that padmasana size is cut according to the core model that binds (20) expanded view
(80), will bind tip alignment first unit layer (80) top center, and its padmasana petal is made to be tightly attached to first unit
Layer (80) outer surface；With the needle tartar (50) of 3 needles, needle thorn is carried out using with first unit layer (80) same needle stichopus japonicus number, and
Label is made at the ending of core model (20) bottom；
(9) interval repeats first unit layer (80) and second unit layer (80) needle-punching run, and makes the ending of each needle thorn
Position is progressive to be staggered, and needle pierces certain thickness and changes the needle tartar (50) of 7 needles or 18 needles until high density envelope is completed in preparation
It pushes up rotary type needle and pierces preform；
(10) in abovementioned steps (4), elementary layer (80) is pierced by base fabric (100) and woven roving (110) stacking needle, base
Cloth (100) and woven roving (110) specification, overlapped way or even elementary layer (80) density are adjustable；
(11) in abovementioned steps (4), the rotary type needle thorn preform that bus is straight line and parallel center axis thereof is prepared
(40) elementary layer (80) must be cut it is rectangular, bus be straight line and with center axis thereof oblique must use sector element layer (80),
Bus is that needle pierces after space curve must be then fastened with strip-form elementary layer (80) from small end to big end；
(12) in abovementioned steps (5), flexible clamping tool refers to the shrinkable former of multi-petal shape, needle thorn use core model (20) as
Formpiston, the two match certifiable needle thorn preform (40) thickness；
(13) in abovementioned steps (8), the tip of padmasana elementary layer (80) is seamless, totally-enclosed, and padmasana list up and down
The tip diameter of first layer (80) is in progressive law, increment value=(product tip diameter-start unit layer tip diameter)/(top
Thickness/elementary layer thickness)；
(14) in abovementioned steps (9), the use scope of the needle tartar (50) of 3 needles, 7 needles and 18 needles is elementary layer (80) lamination
For thickness with the needle tartar (50) of 3 needles within 5mm, 5mm~10mm uses the needle tartar (50) of 7 needles, and 10mm or more is with 18
The needle tartar (50) of root needle；
(15) in abovementioned steps (9), elementary layer (80) every time needle thorn ending position progressive value=× product bottom outer diameter/
(product bottom thickness/elementary layer thickness)；
(16) aforementioned needle stichopus japonicus number includes needle thorn pricker (90), needle thorn breadth, density and depth；
(17) aforementioned needle thorn preform (40) includes: not bind or bind, solid or hollow, and cross-section size or change are cut
Face size；
(18) material of fibrous material used in aforementioned needle thorn preform (40) is carbon fiber, quartz fibre, basalt fibre
Dimension, high silica fiber, glass fibre etc..
Present invention can apply to high temperature filtrations, heat-resistant composite material field, can also open up to solar heat protection, wave-penetrating composite material field
Exhibition.
Detailed description of the invention
Fig. 1 is the horizontal acupuncture apparatus signal for the preparation method that a kind of high density rotary type needle of the present invention pierces preform
Figure；
20 be core model in diagram, and 30 be insulation blanket, and 40 is do not bind, high density rotary type needle pierces preform, and 60 be needle
Bed, 70 pierce the pricker used for the fixed rotation central axis of core model, 90 for needle, and four-headed arrow is that needle pierces reciprocating motion side in figure
To.
Fig. 2 is the vertical acupuncture apparatus signal for the preparation method that a kind of high density rotary type needle of the present invention pierces preform
Figure；
10 be rotary table in diagram, and 20 be core model, and 30 be insulation blanket, and 40 is bind, high density rotary type needle thorn is pre-
Formed body, 50 be needle tartar, and four-headed arrow is that needle pierces vibration-direction in figure.
Fig. 3-1 is needle tartar's structure of 3 needles of preparation method that a kind of high density rotary type needle of the present invention pierces preform
Schematic diagram；
Fig. 3-2 is needle tartar's structure of 7 needles of preparation method that a kind of high density rotary type needle of the present invention pierces preform
Schematic diagram；
Fig. 3-3 is needle tartar's structure of 18 needles of preparation method that a kind of high density rotary type needle of the present invention pierces preform
Schematic diagram；
Fig. 4-1 is the preparation method beam shapes schematic diagram that a kind of high density rotary type needle of the present invention pierces preform；
80 be elementary layer in diagram.
Fig. 4-2 is the preparation method fan out schematic diagram that a kind of high density rotary type needle of the present invention pierces preform；
80 be elementary layer in diagram.
Fig. 4-3 is the preparation method padmasana expanded schematic diagram that a kind of high density rotary type needle of the present invention pierces preform；
80 be elementary layer in diagram.
Fig. 5 is the elementary layer composed structure signal for the preparation method that a kind of high density rotary type needle of the present invention pierces preform
Figure；
100 be woven roving in diagram, and 110 be base fabric.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:
Embodiment 1
Prepare high density quartz fiber, the cone shaped needle that do not bind thorn preform: big end outer diameter Φ 320, big end internal diameter
Φ 300, small end outer diameter Φ 220, small end inner diameter Φ 200, height H300mm, with a thickness of compressed；Fiber volume percentage composition
It is 40% ± 1%., it is known that the thickness of quartzy grid cloth and quartzy plain cloth is respectively 0.18mm, 0.22mm, quartzy plain cloth and stone
The surface density of English grid cloth is respectively 198 g/m2With 100 g/m2.Preparation step is as follows:
(1) obtaining the volume of cone shaped needle thorn preform according to the cubature formula for the Taper Pipe that do not bind is 2451cm3, by fiber
Volume content 40% calculate Taper Pipe density be 0.88g/cm3, Taper Pipe weight is 2156g, Taper Pipe is unfolded along longitudinal section cutting,
It is calculated value 0.258m that it, which fans table top product,2(area value is the outermost surface area of Taper Pipe product), according to quartzy plain cloth
Surface density with quartzy grid cloth is respectively 198 g/m2With 100 g/m2, acquiring unit layer weight is 129g, then Taper Pipe elementary layer
The total number of plies=total weight/unit layer weight=2156/129=16 layer.
(2) length and a perimeter woven roving and two plain clothes more bigger than core model are cut to obtain, woven roving topmost,
Its one elementary layer of lower composition is laminated in two plain clothes, and plain cloth bottom surface serves as a contrast plastic film, adjusts the stripping felt plate and support of needing machine
Felt plate spacing is 3mm, by 25 needles of needling density/cm2, depth of needling 9mm carries out elementary layer needle thorn, finally by 16 lists obtained
First layer is placed in equal static pressure tank and goes de-stress, and accurately controls each unit thickness degree.
(3) the mandrel surface brush all-purpose adhesive that will have been had been prepared for, using 20mm thickness insulation blanket, insulation blanket is cut into strips,
It successively winds from mold small end toward big end, until package mandrel surface is completely covered, core model is fixed in horizontal needing machine
On central axis；By the elementary layer package of step (2) preparation, it is laid in insulation blanket surface, is indulged with the needle tartar of 3 needles by fan platform shape
Start to pierce every 3cm needle to opening and once be fixed, takes to pierce from small end to big end circumferential direction multiple spot needle and fix, needle is matched when piercing
It closes and uses flexible frock clamping unit layer, it is made to be tightly attached to insulation blanket surface, remaining 15 elementary layers are each by than the 1st elementary layer
The surplus of the bigger 1cm in side is cut, to guarantee that elementary layer has remained to during the preparation process as preforming volume constantly becomes larger
All standing Taper Pipe surface.
(4) setting needle pierces data, and needling density is 40 needles/cm2, depth of needling 18mm is implanted into three row's needles on needle bed,
Zone length is 350mm, and the tilt angle for adjusting central axis is equal to Taper Pipe semi-cone angle, so that core model bus is parallel with needle bed,
Pricker is pierced into elementary layer along Taper Pipe normal direction, and needle pierces one layer unit layer core model overall height of every increase and declines the 0.62mm(data
For elementary layer theoretic throat), while the elementary layer opening that is staggered, continue circumferential needle thorn, reach setting thickness 10mm and stop needle thorn,
Cut lower sample, high density obtained does not bind cone shaped needle thorn preform, density 0.88g/cm2, fiber volume fraction is
40%。
Embodiment 2
Prepare high density quartz fiber bind hollow-cone body acupuncture thorn preform: big end outer diameter Φ 520, big end internal diameter Φ
500, height H500's, with a thickness of compressed；Fiber volume fraction is 40% ± 1%, it is known that quartzy grid cloth and quartzy plain weave
The thickness of cloth is respectively 0.18mm, 0.22mm, and the surface density of quartzy plain cloth and quartzy grid cloth is respectively 198 g/m2With 100
g/m2.Preparation step is as follows:
(1) obtaining cone volume according to the hollow cone cubature formula that binds is 2671cm3, is calculated by fiber volume fraction 40%
Obtaining cone density is 0.88g/cm3, cone weight is 2350g, and cone is unfolded along longitudinal section cutting, and sectorial area is to count
Calculation value is 0.295m2(area value is the outermost surface area of cone product), according to quartzy plain cloth and quartzy grid cloth
Surface density is respectively 198 g/m2With 100 g/m2, acquiring unit layer weight is 146.8g, then the total number of plies=gross weight of conical element layer
Amount/unit layer weight=2350/146.8=16 layer.
(2) woven roving and two plain clothes of mold will be completely covered, with woven roving above, two plain clothes exist
Following form stacking one elementary layer of composition, bottom surface serves as a contrast plastic film.Adjustment stripping felt plate and the spacing for holding in the palm felt plate are 3mm, are adjusted
Whole needling density is 25 needles/cm2, and depth of needling is that 9mm carries out elementary layer pre-needling, first two elementary layers of pre- thorn.
(3) the mandrel surface brush coating that will have been had been prepared for, using the insulation blanket with a thickness of 20mm, insulation blanket is cut into item
Shape is successively wound down by core mold tip, until package mandrel surface is completely covered, core model is fixed on vertical rotating work
On platform, elementary layer prepared by early period is cut into sector and is wrapped in insulation blanket surface, another cuts into pintongs lotus flower shape, in
The heart is continual full circle, cuts remaining 14 elementary layers by this, fan-shaped and pintongs lotus flower shape each 7 spare.
(4) first layer needle pierces: one layer of sector element layer being wrapped in mandrel surface, using the needle tartar of 3 needles by sector
Start to pierce every 3cm needle at longitudinal opening and once it is fixed, takes solid from tip to cone base circumferential direction multiple spot needle thorn
It is fixed, it is used cooperatively flexible frock clamping unit layer when needle pierces, it is made to be tightly attached to insulation blanket surface；Needle stichopus japonicus number is arranged: needle thorn is close
40 needles/cm2, depth of needling 18mm are spent, is pierced with the needle tartar of 3 needles by the downward from coil to coil needle in core model tip, needle marks after piercing
Ending position.
(5) second layer needle pierces: one layer of padmasana elementary layer being wrapped in mandrel surface, makes weight at the top of its tip and core model
It closes, is pierced and fixed with needle tartar's needle of 3 needles；Pintongs petal is clamped with flexible frock, is smoothed downwards, padmasana elementary layer is close to
In sector element layer surface, and is pierced and fixed with needle tartar's needle of 3 needles；Adjust needle stichopus japonicus number: needling density is 40 needles/cm2, needle
Thorn depth is 18mm, with the needle tartar of 3 needles by from coil to coil needle thorn, needle mark ending, first layer after piercing downwards at the top of core model
The ending position of needle thorn and second layer needle thorn must be staggered.
(6) first layer and second layer acupuncture manipulation step are repeated, pays attention to each layer needle thorn ending position that is staggered, while protecting always
Holding depth of needling is 18mm；When needle pierces 5mm thickness, it is changed to the needle tartar of 7 needles, 18 needles of replacement when reaching 10mm thickness
Needle tartar, it is therefore an objective to increase needle thorn face, improve needle and pierce production efficiency, until reaching product requirement thickness, quasi-full is completed
Product size, high density obtained bind hollow-cone body acupuncture thorn preform, density 0.88g/cm2, fiber volume fraction is
40%。
Claims (8)
1. a kind of preparation method of high density rotary type needle thorn preform, it is characterized in that the needle thorn preform includes:
It does not bind or binds, solid or hollow, cross-section size or variable cross-section size, prepared by the needle thorn preform that do not bind includes
The following steps:
1. using horizontal acupuncture apparatus, insulation blanket (30) are cut according to the size of product, make its length and perimeter and core model (20)
Identical, thickness is greater than depth of needling 2mm, and the interior omnipotent gluing of brush is rolled in core model (20) outer surface；
2. adjusting the central axis (70) of fixed core model (20), it is made to be equal to core model (20) semi-cone angle with horizontal line angle α, kept
Core model (20) bus is parallel with needle bed (60) plane；
It is the corresponding rotation angle of 3cm the rotation step distance adjustment of core model (20) central axis (70) 3. adjusting needle stichopus japonicus number；
The elementary layer (80) that core model (20) expanded view prepares rectangle 4. basis does not bind or fan-shaped size is cut, elementary layer (80)
It is to be pierced by base fabric (100) and woven roving (110) stacking needle, base fabric and woven roving specification, overlapped way or even elementary layer
(80) density is adjustable, and for two base fabrics (100) under, woven roving (110) is stacked an elementary layer on upper layer, and bottom surface lining plastic material is thin
Film；
5. elementary layer (80) is wrapped in insulation blanket (30) surface, clamped with flexible frock, smooths compacting elementary layer (80), make list
First layer (80) is tightly attached to insulation blanket (30) surface, fixes being pierced at its overlapping the slot with needle tartar (50) needle of 3 needles, in needle bed
(60) it is implanted into three row's prickers (90) on, adjusts needle stichopus japonicus number, pierces primary rotation 3cm corresponding central angle step pitch edge by every needle
Generatrix direction integral pin thorn；
6. every pierced one layer of height that must reduce a core model central axis (70), decreasing value is increased on current core model (20)
Elementary layer (80) thickness；By needle stichopus japonicus number and elementary layer (80) number of plies of setting can prepare high density do not bind rotary type needle thorn
Preform；
The needle thorn preform preparation of binding includes the following steps:
It is the corresponding rotation angle of 3cm the step distance adjustment of rotary table (10), into first 1. using vertical acupuncture apparatus instead
Elementary layer (80) needle thorn prepares the elementary layer (80) that fan-shaped size is cut according to the core model that binds (20) expanded view, is wrapped in
Insulation blanket (30) surface, with the needle tartar (50) of 3 needles at elementary layer (80) overlapping the slot and other arbitrary surfaces take multiple spot
Needle thorn is carried out, keeps it fixed with insulation blanket (30), then smooth compacting elementary layer (80) with flexible frock, it is made to be close to insulation blanket
(30) surface；With the needle tartar (50) of 3 needles, needle stichopus japonicus number is adjusted, pierces the corresponding center primary rotation 3cm by every needle
Along the circumferential direction needle pierces angle step pitch, then by sequence from coil to coil needle thorn from top to bottom, until core model (20) bottom is finished up, and marks
Note；
2. second unit layer needle pierces, the elementary layer (80) that padmasana size is cut is prepared according to the core model that binds (20) expanded view, it will
Bind tip alignment first unit layer (80) top center, and its padmasana petal is made to be tightly attached to first unit layer (80) outside
Surface；With the needle tartar (50) of 3 needles, needle thorn is carried out using with first unit layer (80) same needle stichopus japonicus number, and in core model
(20) label is made at the ending of bottom；
3. interval repeats first unit layer (80) and second unit layer (80) needle-punching run, and passs the ending position of each needle thorn
It is staggered into formula, needle pierces the needle tartar (50) that elementary layer (80) laminated thickness uses 7 needles in 5mm~10mm, elementary layer
(80) laminated thickness binds rotary type needle in 10mm or more with the needle tartar (50) of 18 needles until high density is completed in preparation
Pierce preform.
2. the method according to claim 1, it is characterized in that step 4. in prepare bus be straight line and parallel central shaft
Line rotary type needle thorn preform (40) elementary layer (80) must be cut it is rectangular, bus be straight line and and center axis thereof
Oblique must use sector element layer (80), and bus is that space curve must then be wound admittedly with strip-form elementary layer (80) from small end to big end
Needle thorn after fixed.
3. the method according to claim 1, it is characterized in that 5. middle flexible clamping tool refers to that multi-petal shape is shrinkable to step
Former, needle thorn use core model (20) as formpiston, and the two matches certifiable needle thorn preform (40) thickness.
4. the method according to claim 1, it is characterized in that step is 2. in the needle thorn preform preparation step that binds
The tip of middle padmasana elementary layer (80) is seamless, totally-enclosed, and the tip diameter of padmasana elementary layer (80) is in be incremented by up and down
Rule, increment value=(product tip diameter-start unit layer tip diameter)/(top thickness/elementary layer thickness).
5. the method according to claim 1, it is characterized in that step is 3. in the needle thorn preform preparation step that binds
In 3 needles, 7 needles and 18 needles needle tartar (50) use scope be elementary layer (80) laminated thickness used within 5mm
The needle tartar (50) of 3 needles, elementary layer (80) laminated thickness uses the needle tartar (50) of 7 needles in 5mm~10mm, single
First layer (80) laminated thickness is in 10mm or more with the needle tartar (50) of 18 needles.
6. the method according to claim 1, it is characterized in that step is 3. in the needle thorn preform preparation step that binds
Progressive value=π × product bottom outer diameter/(product bottom thickness/unit thickness of each needle thorn ending position of middle elementary layer (80)
Degree).
7. the method according to claim 1, it is characterized in that the needle stichopus japonicus number includes needle thorn pricker (90), needle thorn
Breadth, density and depth.
8. the method according to claim 1, it is characterized in that fibrous material used in needle thorn preform (40)
Material is carbon fiber, quartz fibre, basalt fibre, high silica fiber, glass fibre etc..
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