CN106799798A - A kind of split mould of hyperboloid revolving solid composite material product - Google Patents
A kind of split mould of hyperboloid revolving solid composite material product Download PDFInfo
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- CN106799798A CN106799798A CN201710076151.9A CN201710076151A CN106799798A CN 106799798 A CN106799798 A CN 106799798A CN 201710076151 A CN201710076151 A CN 201710076151A CN 106799798 A CN106799798 A CN 106799798A
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
- B29C33/301—Modular mould systems [MMS], i.e. moulds built up by stacking mould elements, e.g. plates, blocks, rods
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/48—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention relates to fiber-reinforced resin matrix compound material manufacture field, specifically a kind of split mould of hyperboloid revolving solid composite material product.Including chassis, external mold and the internal model being set in external mold, the external mold and internal model are truncated cone-shaped, one end that external mold and internal model are relatively large in diameter is detachably secured on the chassis respectively, the less one end of diameter is mutually detachably fixed connection, and the closed annular die cavity for making hyperboloid revolving body is constituted between chassis, external mold and internal model；The external mold and internal model are split type, and external mold is made up of outer point of mould of multiple arcs, and radian of any one outer point of mould is respectively less than equal to 90 °, and internal model is made up of a point mould in multiple arcs, and radian of point mould is respectively less than 90 ° in any one.When being put into preform after mould of the invention assembling, preform will not produce extruding gauffer, and the product line style of shaping is accurate, and the problems such as there is not cavity runner, and Split mold is easily assembled and dismounting is conducive to the demoulding.
Description
Technical field
The present invention relates to fiber-reinforced resin matrix compound material manufacture field, specifically a kind of hyperboloid revolving body is answered
The split mould of laminate article.
Background technology
Fiber-reinforced resin matrix compound material has high-strength light weight, the diamagnetic, vibration insulation and noise reduction of insulation, corrosion-resistant etc. many excellent
Point, is widely used in many engineering fields such as Aeronautics and Astronautics, ship, the energy.In the prior art, generally using vacuum aided
Resin transfer molding (RTM) process is VARTM manufactures.VARTM is developed on RTM Process ba- sis, and cardinal principle is in die cavity
The preform of the fiber-reinforced resin matrix compound material designed by performance and structural requirement is laid, then using vavuum pump to closing
Matched moulds chamber vacuumizes, then infuses resin into closed mould cavity with injection device, or the external and internal pressure difference note for only being caused by die cavity vacuum
Enter resin, solidify finished product.Compared with conventional RTM techniques, closed mould cavity vacuumizes the mobility for improving resin in die cavity
And wetability, and be conducive to draining bubble, this is possible to reduce the injection pressure of die cavity, improves VARTM composite products
Fiber content, reduces the microscopic voids of VARTM composite products, makes the mechanical property of VARTM composite products more preferable.
Fig. 4 is a kind of stereochemical structure simplified schematic diagram of hyperboloid revolving solid composite material product, the composite product
Structure design size is given and is made up of metal framework 10, bottom surface 11, lateral surface 12 and medial surface 13, wherein bottom surface 11, outside
Face 12 and medial surface 13 be integral one-step molding and meet design size, meets VARTM technological requirements.Fig. 5 is the longitudinal section of Fig. 4
Schematic diagram, as seen from the figure, the composite product profile is streamlined, the change of its cross sectional dimensions is greatly, bottom is thick, upper end is thin,
Reinforcing material content is high, causes preform that the phenomenons such as extruding gauffer, boss, staggered floor, slip are produced when being put into mould, makes it thick
Heterogeneity is spent, cavity runner is also easy to produce, hickie and defect area is occurred.In addition after composite solidifies, the curved surface of large area
The problems such as interface cohesive force can cause the composite product cannot to be separated with mould.Returned for the hyperboloid for meeting VARTM techniques
Swivel composite product, corresponding split mould method for designing yet there are no relevant report.
The content of the invention
The present invention is intended to provide one kind can be eliminated when preform is put into mould produces fold, variable thickness and product
The split mould of the hyperboloid revolving solid composite material product of the problems such as separating is difficult to after solidification with mould.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of hyperboloid revolving solid composite material
The split mould of product, including chassis, external mold and the internal model that is set in external mold, the external mold and internal model are round platform
Shape, and both big ends, towards being unanimously configured, the big end of external mold and internal model is detachably secured on the chassis respectively, small end
Connection is mutually detachably fixed, the closed ring for making hyperboloid revolving body is constituted between chassis, external mold and internal model
Shape die cavity；The external mold and internal model are split type, and external mold is made up of outer point of mould of multiple arcs, any one outer point of arc of mould
Degree is respectively less than and is equal to 90 °, and internal model is made up of a point mould in multiple arcs, and the radian of point mould is respectively less than 90 ° in any one.
Preferably, the chassis is annular, and the limited step that annular is provided between external mold and internal model, institute are located on chassis
State outer point of mould and the interior point of bottom of mould is fixed on chassis respectively against the both sides of limited step.
Preferably, positioned at first sealing for being respectively provided on two sides with built-in sealing joint strip of limited step on the chassis
Groove；The external mold is fixedly connected with the upper end of internal model by radial bolts, at the position that the upper end of external mold and internal model is connected with each other
It is respectively provided with the second seal groove for placing sealing joint strip.
Preferably, the split mould also includes taking over a business for annular, outer point of mould and the interior point of top of mould
It is separately fixed on this takes over a business.
Preferably, the outer point of mould and interior point of mould be respectively arranged at two ends with it is opposite in the flange section of annular die cavity, flange section
On be interval with screwed hole, the chassis and take over a business it is upper offer corresponding bolt hole respectively, chassis and take over a business by bolt point
The two ends of mould and interior point of mould Gu Ding not be outside divided.
Preferably, it is provided with crisscross adding in the exterior side wall and the interior point of internal side wall of mould of the outer point of mould
Strong gusset.
Preferably, two pieces of outer point of adjacent cohesive positions of mould are by opposite to each other in the outer plate and bolt of the annular die cavity
It is detachably fixed, two pieces of interior point of adjacent cohesive positions of mould are by opposite removable in the clip plate and bolt of the annular die cavity
Unload fixation.
Preferably, two pieces of a pieces divided outward in mould that the outer plate is connected with by the outer plate are formed in one；Institute
One piece in two pieces that clip plate is connected with by the clip plate in point mould is stated to be formed in one.
Preferably, two pieces of outer point of adjacent moulds are vertically provided with outer stationary plates along cohesive position respectively, and two pieces of outer stationary plates lead to
Bolt is crossed to be fixedly connected；Two pieces of interior point of adjacent moulds are vertically provided with internal fixation plate along cohesive position respectively, and two pieces of internal fixation plates lead to
Bolt is crossed to be fixedly connected.
Preferably, the external mold includes point moulds outside four pieces of identicals, the internal model include that three block structures are identical and radian compared with
Big interior point of mould and three block structures be identical and radian it is less in point mould.
Beneficial effect
A kind of split mould of hyperboloid revolving solid composite material product of the invention, chassis is divided into by mould, and external mold is interior
Several components such as mould, wherein external mold are made up of a point mould outside polylith, and internal model is made up of a point mould in polylith, outward, inner mold pass through chassis
And it is inside and outside between corresponding bolt hole be fixedly connected.When being put into preform after mould assembling, preform will not be produced
Extruding gauffer, the product line style of shaping is accurate, and the problems such as there is not cavity runner, and Split mold is easily assembled and dismantle favorably
In the demoulding.
Brief description of the drawings
Fig. 1 is interior point of mould and the outer dimensional structure diagram for dividing mould to be connected using presser type in the present invention；
Fig. 2 is Fig. 1 not exploded perspective views comprising outer plate；
For interior point of mould in the present invention and outward, point mould is connected and fixation gasket mounted dimensional structure diagram Fig. 3 using presser type；
Fig. 4 is the dimensional structure diagram by hyperboloid revolving solid composite material product obtained in the present invention；
Fig. 5 is the longitudinal sectional drawing of Fig. 4；
Marked in figure：1st, chassis, 2, external mold, 201, divide mould outward, 202, outer plate, 203, outer stationary plates, 3, internal model, 301, interior point
Mould, 302, clip plate, 303, internal fixation plate, 4, limited step, 5, seal groove, the 6, second seal groove, 7, take over a business, 8, flange section,
9th, gusset is strengthened, 10, metal framework, 11, bottom surface, 12, lateral surface, 13, medial surface.
Specific embodiment
As described in Fig. 1 to Fig. 3, a kind of split mould of hyperboloid revolving solid composite material product of the invention, bag
The internal model 3 for include chassis 1, taking over a business 7, external mold 2 and being set in external mold 2.Chassis 1 and take over a business 7 and be annular, wherein on chassis 1
It is provided with the limited step 4 of annular.External mold 2 and internal model 3 are truncated cone-shaped, and one end that external mold 2 and internal model 3 are relatively large in diameter respectively can
Dismounting is fixed on the chassis 1 against the both sides of limited step 4, and external mold 2 and the less one end of the diameter of internal model 3 are mutually detachable
It is fixed on after being fixedly connected on 7 bottom surface.Constituted between chassis 1, external mold 2 and internal model 3 closed double for making
The annular die cavity of revolution solid of curved surface.Due to needing to bear larger pressure in product manufacturing process, in annular die cavity, it is desirable to single
Individual part stabilization is unlikely to deform, and is tightly fastened between all parts, and easy to disassemble, so in the present embodiment, the outside of internal model 3
Crisscross reinforcement gusset 9 is equipped with the inwall side wall of side wall and internal model 3.On external mold 2 and the top and bottom of internal model 3
Flange is respectively equipped with, internal thread hole is offered on flange respectively, chassis 1 and taking over a business to be provided with multiple bolts hole on 7 accordingly, and
The big end of external mold 2 and internal model 3 is fixedly linked with chassis by bolt, the small end of external mold 2 and internal model 3 is mutual by radial bolts
After fixation, then by bolt respectively with take over a business 7 and be connected.In order to be further ensured that the sealing of annular die cavity, in the limiting stand
First seal groove 5 for being respectively provided on two sides with built-in sealing joint strip of rank 4, built-in sealing is provided with the connecting portion of external mold 2 and internal model 3
Second seal groove 6 of adhesive tape.
Fold is produced when preform is put into mould in order to eliminate, it is difficult with mould after variable thickness and product solidification
The problems such as to separate, external mold of the invention 2 and internal model 3 be it is split type, external mold 2 by multiple arcs outer point of mould 201 pass through group
Into the radian of any one outer point of mould 201 is respectively less than equal to 90 ° and top and bottom are provided with corresponding flange section 8.Internal model 3 by
Interior point of mould 301 of multiple arcs is constituted, and the radian of point mould 301 is respectively less than 90 ° and top and bottom are provided with accordingly in any one
Flange section 8.Corresponding flange section 8 collectively forms it with chassis 1 and takes over a business 7 and is connected respectively on point mould 201 and interior point of mould 301 outward
Flange.The side of being fixedly connected in the present invention between two pieces of outer point of adjacent moulds 201 and between two pieces of interior point of adjacent moulds 301
Formula is not unique, two pieces of outer point of adjacent cohesive positions of mould 201 can by opposite to each other in the annular die cavity outer plate 202 and
Bolt is detachably fixed, and two pieces of interior point of adjacent cohesive positions of mould 301 can be by opposite to each other in the clip plate of the annular die cavity
302 and bolt be detachably fixed.Outer plate 202 or clip plate 302 can divide mould 201 or interior point of mould 301 outward with adjacent two pieces
It is being kept completely separate, or be only integrally formed with one of outer plate 202 or clip plate 302.In another connected mode
In, two pieces of outer point of adjacent moulds 201 are vertically provided with outer stationary plates 203 along cohesive position respectively, and two pieces of outer stationary plates 203 pass through spiral shell
Bolt is fixedly connected two pieces of interior point of adjacent moulds 301 and is vertically provided with internal fixation plate 303, two pieces of internal fixation plates along cohesive position respectively
303 are bolted to connection, it is preferred that the outer stationary plates 203 and internal fixation plate 303 divide mould 201 and interior point with outer respectively
Mould 301 is integrally formed.Mould when above-mentioned presser type connection and the board-like connection of fixation ensure that circular die cavity pressure is larger
Has overall stability, two kinds are fixedly connected mode and can be used alone, and can also be used in mixed way.
It is preferable to carry out according to the several of specification of target hyperboloid revolving solid composite material product the following is the present invention
Example：
Embodiment one：Make hyperboloid revolving solid composite material product：Length 1200mm, tip diameter Φ 2500m, bottom external diameter
Φ 3400mm, composite 2~20mm of molding thickness, as shown in Figures 4 and 5.
According to product size, split mould is as shown in Figures 1 and 2：Including chassis 1, mould 201, interior point of mould are divided outward
301, outer plate 202 and takes over a business 7 at clip plate 302.Wherein chassis 1 and take over a business 7 each one piece, mould 201 totally four pieces, structure are divided outward
Identical and radian is 90 °；Interior point of totally six pieces of mould 301, wherein the block structure of piecemeal three is identical and radian is larger, in addition three block structures
Identical and radian is smaller, the radian of point mould 301 is respectively less than 90 ° in any one piece；202 4 pieces of outer plate and clip plate 302 6
Block, takes over a business 7 one pieces.
In the preparation process of hyperboloid revolving solid composite material product, the prefabricated of glass fiber reinforcing fabrics is laid first
Body is placed on the limited step 4 on chassis 1, and sealing joint strip is put into first seal groove 5 on chassis 1；Four pieces divide outward mould 201 according to
Sequence counter-clockwise is placed on chassis 1 one by one, will outward divide mould 201 to be connected with chassis 1 by bolt, will be put in the second seal groove 6
Enter sealing joint strip.A point mould 301 is arranged according to small one and large one mode intersected in six pieces, first by point mould in larger three pieces of radian
301 are spaced apart on chassis 1, reserve radian it is less in point mould 301 room, by bolt by radian it is larger in point mould
301 are connected with chassis 1, at the same will outward point mould 201 it is larger with radian in a point mould 301 be connected by bolt；It is again that radian is smaller
Three pieces in a point mould 301 be placed on one by one on chassis 1, by bolt will in point mould 301 respectively with chassis 1 and divide the phase of mould 201 outward
Even；All an outer point mould 201 is connected with interior point of mould 301 and be connected afterwards in place mould piecemeal gap less than 1mm；Then by four pieces of outer plates
Four pieces are divided outward mould 201 to be fixedly connected two-by-two by 202 by bolt, and six pieces of clip plates 302 will divide the fixed company two-by-two of moulds 301 in six pieces
Connect, will finally take over a business 7 and be respectively fixedly connected with the flange section 8 on outer point of mould 201 and interior point of mould 301 by bolt.
After completing product molding, remove 7 first, secondly remove outer plate 202 and clip plate 302, then dismantle outer
Point mould 201, then dismantle point mould 301 in less three pieces of radian, finally dismantles point mould 301 in larger three pieces of radian, you can will
Take out hyperboloid revolving solid composite material product.
In the present embodiment, after Split mold and precast body matched moulds, 12~48h removes mould, and precast body surface does not find
Extruding gauffer, fibre-glide, does not find that expression lobes occur in the positions such as matched moulds seam, and vertical direction does not find the influences such as extruding depression
The defect of technique.During product molding, mould inside vacuum is less than -0.07MPa, bears injection pressure more than 0.5MPa.Solidification
Afterwards, Split mold departs from easy with product, and product and mould are not caused to damage, and product line style deviation is less than 1mm.
Embodiment two
The present embodiment is hyperboloid revolving solid composite material product with the difference of embodiment one：Length 600mm, tip is straight
Footpath Φ 1283mm, bottom external diameter Φ 1712mm, internal diameter Φ 1546mm, thickness of composite material are 8~16mm.Split mould is
1 one pieces of chassis, divides outward 201 4 pieces of mould, interior point of 301 6 pieces of mould, 202 4 pieces of outer plate, 302 6 pieces of clip plate to be not provided with
7, other steps are identical with embodiment one.
Embodiment three
The present embodiment is hyperboloid revolving solid composite material product with the difference of embodiment one：Length 1900mm, tip
Diameter of phi 3900mm, bottom external diameter Φ 5000mm, 2~20mm of composite molding thickness.Split mould is chassis 1 one
Block, divides outward 201 8 pieces of mould, interior point of 3,010 two pieces of mould, 202 8 pieces of outer plate, 3,020 two pieces of clip plate to take over a business 7 one pieces, other
Step is identical with embodiment one.
Example IV
The present embodiment is as shown in figure 3, be hyperboloid revolving solid composite material product with the difference of embodiment one：Length
1200mm, tip diameter Φ 2000mm, bottom external diameter Φ 2400mm.Composite 2~20mm of molding thickness, split mould
Be designed as 1 one pieces of chassis, divide 201 6 pieces of mould outward, interior point of 301 6 pieces of mould, six pieces divide outward between mould 201 by with point mould outward
201 integrally formed outer stationary plates 203 are fixedly connected with bolt, have between powder in six pieces four link positions by with interior point
The integrally formed internal fixation plate 303 of mould 301 is fixedly connected with bolt, and remaining two link positions are by with interior point of mould 301 integrally
The clip plate 302 of shaping is fixedly connected with bolt, does not design 7, and other steps are identical with embodiment one outward.
The method of the present invention is equally applicable to the design of other nonmetallic materials moulds, for the open present invention at this
The embodiment selected in text, is presently considered to be suitable, it should be appreciated that：It is contemplated that belonging to this design including all
With all changes in the scope of the invention and improvement.
Claims (10)
1. a kind of split mould of hyperboloid revolving solid composite material product, it is characterised in that：Including chassis（1）, external mold
（2）And it is set in external mold（2）In internal model（3）, the external mold（2）And internal model（3）It is truncated cone-shaped, and both big end directions
Unanimously it is configured, external mold（2）And internal model（3）Big end be detachably secured to the chassis respectively（1）On, small end is mutually removable
Unload and be fixedly connected, on chassis（1）, external mold（2）And internal model（3）Between constitute the closed ring for making hyperboloid revolving body
Shape die cavity；The external mold（2）And internal model（3）It is split type, external mold（2）By outer point of mould of multiple arcs（201）Composition, arbitrarily
One is divided outward mould（201）Radian be respectively less than equal to 90 °, internal model（3）By in multiple arcs points of moulds（301）Composition, it is any one
Point mould in individual（301）Radian be respectively less than 90 °.
2. a kind of split mould of hyperboloid revolving solid composite material product according to claim 1, its feature exists
In：The chassis（1）It is annular, on chassis（1）It is upper to be located at external mold（2）And internal model（3）Between be provided with annular limited step
（4）, the outer point of mould（201）With interior point of mould（301）Bottom respectively against limited step（4）Both sides be fixed on chassis（1）
On.
3. a kind of split mould of hyperboloid revolving solid composite material product according to claim 2, its feature exists
In：On the chassis（1）It is upper to be located at limited step（4）The first seal groove for being respectively provided on two sides with built-in sealing joint strip（5）；Institute
State external mold（2）And internal model（3）Upper end be fixedly connected by radial bolts, in external mold（2）And internal model（3）Upper end be connected with each other
Position be respectively provided with place sealing joint strip the second seal groove（6）.
4. a kind of split mould of hyperboloid revolving solid composite material product according to claim 1, its feature exists
In：The split mould also includes taking over a business for annular（7）, the outer point of mould（201）With interior point of mould（301）Top
This is separately fixed to take over a business（7）On.
5. a kind of split mould of hyperboloid revolving solid composite material product according to claim 4, its feature exists
In：The outer point of mould（201）With interior point of mould（301）Be respectively arranged at two ends with it is opposite in the flange section of annular die cavity（8）, flange section
（8）On be interval with screwed hole, the chassis（1）With take over a business（7）It is upper to offer corresponding bolt hole, chassis respectively（1）And top
Disk（7）Outer point of mould is separately fixed at by bolt（201）With interior point of mould（301）Two ends.
6. a kind of split mould of hyperboloid revolving solid composite material product according to claim 1, its feature exists
In：The outer point of mould（201）Exterior side wall and interior point of mould（301）Internal side wall on be provided with crisscross reinforcement
Gusset（9）.
7. a kind of split mould of hyperboloid revolving solid composite material product according to claim 1, its feature exists
In：Two pieces of outer point of adjacent moulds（201）Cohesive position by opposite in the outer plate of the annular die cavity（202）And bolt can
Dismounting is fixed, two pieces of interior point of adjacent moulds（301）Cohesive position by opposite in the clip plate of the annular die cavity（302）And
Bolt is detachably fixed.
8. a kind of split mould of hyperboloid revolving solid composite material product according to claim 7, its feature exists
In：The outer plate（202）With by the outer plate（202）Two pieces of connection divide outward mould（201）In one piece be formed in one；
The clip plate（302）With by the clip plate（302）Point mould in two pieces of connection（301）In one piece be formed in one.
9. a kind of split mould of hyperboloid revolving solid composite material product according to claim 1, its feature exists
In：Two pieces of outer point of adjacent moulds（201）Respectively outer stationary plates are vertically provided with along cohesive position（203）, two pieces of outer stationary plates（203）
It is bolted to connection；Two pieces of interior point of adjacent moulds（301）Respectively internal fixation plate is vertically provided with along cohesive position（303）, two
Block internal fixation plate（303）It is bolted to connection.
10. a kind of split mould of hyperboloid revolving solid composite material product according to claim 1, its feature exists
In：The external mold（2）Including outside four pieces of identicals points of moulds（201）, the internal model（3）It is identical including three block structures and radian is larger
Interior point of mould（301）And three the identical and radian of block structure it is less in point mould（301）.
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| CN113459349A (en) * | 2021-06-01 | 2021-10-01 | 武汉海威船舶与海洋工程科技有限公司 | VARI (vacuum alternating current) -process-based sealing method for male die forming die of composite material component with curvature |
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| CN112454757A (en) * | 2020-10-27 | 2021-03-09 | 中国运载火箭技术研究院 | Mold and shell |
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| CN112476874B (en) * | 2020-11-04 | 2022-06-21 | 西安鑫垚陶瓷复合材料有限公司 | S-shaped structural member mold and method for preparing S-shaped structural member by using same |
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| CN113459349A (en) * | 2021-06-01 | 2021-10-01 | 武汉海威船舶与海洋工程科技有限公司 | VARI (vacuum alternating current) -process-based sealing method for male die forming die of composite material component with curvature |
| CN113459349B (en) * | 2021-06-01 | 2022-05-06 | 武汉海威船舶与海洋工程科技有限公司 | VARI (vacuum alternating current) -process-based sealing method for male die forming die of composite material component with curvature |
| CN114012875A (en) * | 2021-11-24 | 2022-02-08 | 西北工业大学 | Preform shaping mold of ceramic matrix composite mixer and use method |
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