CN108688195A - Carbon fiber composite material trapezoidal framework structure and forming method thereof - Google Patents
Carbon fiber composite material trapezoidal framework structure and forming method thereof Download PDFInfo
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- CN108688195A CN108688195A CN201810609725.9A CN201810609725A CN108688195A CN 108688195 A CN108688195 A CN 108688195A CN 201810609725 A CN201810609725 A CN 201810609725A CN 108688195 A CN108688195 A CN 108688195A
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- rib
- axle beam
- back rest
- paving
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 229920000049 Carbon (fiber) Polymers 0.000 title abstract description 5
- 239000004917 carbon fiber Substances 0.000 title abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 20
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 21
- 239000000835 fiber Substances 0.000 claims description 21
- 239000004744 fabric Substances 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 230000002787 reinforcement Effects 0.000 claims description 12
- 239000002023 wood Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract description 2
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 150000001721 carbon Chemical class 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
- F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles
- F16S3/06—Assemblies of elongated members
- F16S3/08—Assemblies of elongated members forming frameworks, e.g. gratings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- General Engineering & Computer Science (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Reinforced Plastic Materials (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a carbon fiber composite material trapezoid skeleton structure and a forming method thereof, wherein a form of 'paving and pasting in blocks, combining and curing' is adopted, a front beam front part, a front beam rear part, a rear beam front part, a rear beam rear part and 4 rib boxes are paved and pasted respectively, then a die is combined, and the carbon fiber composite material trapezoid skeleton structure enters an autoclave for curing. The forming dies in front of the front beam and behind the rear beam are combined, so that smooth demolding of the trapezoidal framework is guaranteed; the tool design form of fastening the positioning stop block and the bolt is adopted, so that the positioning accuracy of the 4 rib boxes is ensured. The pressurizing modes of the front beam back, the rear beam front and the rib box adopt a silicon rubber flexible membrane pressurizing method, so that the uniformity of the pressure of the internal complex structure and the quality of the inner surface are ensured. The co-curing molding process for the carbon fiber composite material trapezoid skeleton greatly reduces the number of fasteners and the gluing process, realizes the integrated molding from the structural design to the manufacturing of the composite material, further reduces the weight of the trapezoid skeleton, and improves the production efficiency.
Description
Technical field
The present invention relates to Carbon Fiber Technology fields, specifically, be a kind of trapezoidal skeleton structure of carbon fibre composite and
Its forming method.
Background technology
Carbon fibre composite have that specific strength and specific modulus are high, designability is strong and can the advantages such as global formation,
Aerospace, rail traffic and field of wind power generation have extensive use.Currently, there are many forming technique of composite material, by
It is few in product its defect for being prepared using prepreg-autoclave forming process, technology stability is good, so the moulding process exists
Aviation field is most widely used.
Composite material global formation forming technique includes co-curing and total splicing.Co-curing refers to two or more
Part by one-step solidification shape and the process of a manufactured integral piece.Be glued altogether refers to that handle is one or more
Cured forming and another or multiple not yet cured parts are cured by adhesive (generally glued membrane) in one-step solidification
And it is glued the process at an entirety.
Certain composite material components need to use integrally curing forming to meet intensity and lightweight requirements, according to total glue
It connects, second bonding or MACHINERY JOINT, is extremely difficult to the requirement of both intensity and strong quantization satisfaction simultaneously.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of trapezoidal skeleton structures of carbon fibre composite
And its forming method.
The purpose of the present invention is achieved through the following technical solutions:
A kind of trapezoidal skeleton structure of carbon fibre composite includes mainly front-axle beam and the back rest;Before " C " type front-axle beam and " C "
Be formed by connecting front-axle beam after type front-axle beam, and be formed by connecting the back rest before " C " type back rest and after " C " type back rest;The first rib of rib box, the second rib
Be attached simultaneously with after " C " type front-axle beam and before " C " type back rest with the short side of third rib, the 4th rib of rib box and meanwhile with front-axle beam
The web surface of taper end head and the back rest is attached.
The first rib of rib box, the second rib, third rib and the 4th rib are equipped with reinforcement cloth at link position simultaneously, for adding
By force.
The front-axle beam is I-shaped structure.
The back rest is I-shaped structure.
Specifically it is refined as:It connects to form front-axle beam by curing with after " C " type front-axle beam before " C " type front-axle beam, " C " type back rest
It is preceding to connect to form the back rest by curing with after " C " type back rest;
The short side of the first rib of rib box, the second rib and third rib simultaneously with after " C " type front-axle beam and before " C " type back rest by consolidating
Change method is attached, and the 4th rib of rib box is connected with the taper end head of front-axle beam and the web surface of the back rest by curing simultaneously
It connects,
A kind of trapezoidal skeleton co-curing moulding process of carbon fibre composite, this technique is using " piecemeal paving, combination are solid
The form of change ", specifically includes following steps:
The first step carries out surface cleaning to all molds used, then de- on metal die surface and combinatorial surface erasing
Mould agent, in wood moulding die surface paving polytetrafluoroethylene (PTFE) release cloth.After the completion, it will be used after die assembly;
Second step, the paving on metal die respectively after beam before and after front-axle beam, respectively in wood moulding mould after front-axle beam and before the back rest
After the completion of paving, repairing type is carried out according to mold groove to precast body and the 4th rib contact area for paving on tool;
Third walks, and first paving is taken out in fact, then again by precast body on former wood moulding mold for first rib, the second rib and third rib
It takes out, the reinforcement cloth paving cut is inserted on precast body on silicon rubber formpiston together.The 4th direct paving of rib is in formpiston
On;
4th step combines before front-axle beam and after front-axle beam, and before and after the back rest after beam, specific method is, will be before front-axle beam and after front-axle beam
The alignment of mold groove, left and right edges alignment, pre-compacted uses spill item made of unidirectional prepreg tape at the angles R after combination
Fill it is smooth, then, using prepreg by combinatorial surface sealing label.Combined method before and after the back rest after beam is same as above;
5th step is taken out the wood moulding mold of front-axle beam and the back rest, by the metal die of front-axle beam and the back rest and bottom plate set of molds
It closes;
First rib, the second rib, third rib and the 4th rib male mold are placed individually into position by the 6th step;It is tight using bolt
Fixed bit block and 4 rib box male molds are extremely bonded;
7th step, the vertical Angle Position that the reinforcement cloth paving cut is contacted in 4 rib boxes with forward and backward beam.
Silicon rubber aluminium core soft mode pressurizing mold after front-axle beam and before the back rest is in place, closes upper cover template die by the 8th step
Tool.
9th step seals overall vacuum bag processed, is molded into solidification of hot-press tank.
It is an advantage of the invention that:The trapezoidal skeleton co-curing moulding process of this carbon fibre composite is easy to operate, repeats
Property is good, while effectively ensuring the accurate of rib box position;And reduces the quantity of fastener and be glued process, realize multiple
Condensation material structure design further mitigates the weight of trapezoidal skeleton, improves production efficiency to manufacture integrated molding.
Description of the drawings
The trapezoidal skeleton structure schematic diagram of 1 carbon fibre composite of attached drawing;
2 silicon rubber aluminium core soft mode structural schematic diagram of attached drawing;
Attached drawing 3-1 reinforcement cloth pavings schematic diagram one;
Attached drawing 3-2 reinforcement cloth pavings schematic diagram two.
Label in attached drawing be:1- front-axle beams;Before 2- front-axle beams;After 3- front-axle beams;The 4- back rest;Before the 5- back rest;After the 6- back rest;7-
One rib;The second ribs of 8-;9- third ribs;The 4th ribs of 10-;11- silicon rubber mantles;12- aluminium cores;13- reinforcement cloth.
Specific implementation mode
The present invention is described in further details below.This carbon fibre composite part ribs box and forward and backward beam co-curing
Moulding process solves splicing circle that traditional secondary is glued between molding middle rib box and forward and backward beam using co-curing global formation
Face effect alleviates the weight of trapezoidal skeleton, improves product quality.
Embodiment 1
A kind of trapezoidal skeleton structure of carbon fibre composite includes mainly front-axle beam 1 and the back rest 4;2 Hes before " C " type front-axle beam
3 are formed by connecting front-axle beam after " C " type front-axle beam, before " C " type back rest 5 and " C " type back rest after 6 be formed by connecting the back rest;The first rib of rib box
7, the short side of the second rib 8 and third rib 9 is attached with after " C " type front-axle beam and before " C " type back rest simultaneously, the 4th rib 10 of rib box
It is attached simultaneously with the taper end head of front-axle beam and the web surface of the back rest.
The first rib of rib box, the second rib, third rib and the 4th rib are equipped with reinforcement cloth at link position simultaneously, for adding
By force.
The trapezoidal skeleton co-curing moulding process of carbon fibre composite, includes the following steps:
The first step carries out surface cleaning to all molds for using, then after the forward and backward beam of front-axle beam, first rib formpiston, the
Two rib formpistons, third rib formpiston, the 4th rib formpiston and 12 metal die surface of silicon rubber aluminium core and combinatorial surface rub at least 2 times and take off
Mould agent, after front-axle beam, before the back rest, first rib former, the second rib former and third rib female mold surface paving polytetrafluoroethylene (PTFE)
Release cloth.After the completion, it will be used after metal die combination after beam before and after front-axle beam;
Second step, respectively 3-4 layers of paving carbon fibre fabric prepreg, same time-division on metal die after beam before and after front-axle beam
3-4 layers of paving carbon fibre fabric prepreg on wood moulding mold, compacting is vacuumized after the completion of paving not after front-axle beam and before the back rest, according to
Repairing type is carried out to precast body and the 4th rib contact area according to mold groove;
Third walks, first 4 layers of the paving carbon fibre fabric prepreg on first rib, the second rib and third rib former wood moulding mold
Compacting is vacuumized, then again takes out precast body, the 40mm*40mm reinforcement cloth pavings cut are inserted in together on precast body
On silicon rubber formpiston.Directly 4 layers of paving carbon fibre fabric prepreg vacuumizes compacting on the 4th rib silicon rubber aluminium core formpiston;
4th step combines before front-axle beam and after front-axle beam, and before and after the back rest after beam, specific method is, will be before front-axle beam and after front-axle beam
Mold groove alignment, left and right edges alignment, vacuumize compacting, at the angles R after combination, twisted using made of unidirectional prepreg tape
The filling of sub- item is smooth, then, using 1 layer of carbon fibre fabric prepreg by combinatorial surface sealing label.Combination side before and after the back rest after beam
Method is same as above;
5th step is taken out the wood moulding mold of front-axle beam and the back rest, by the metal die of front-axle beam and the back rest and bottom plate set of molds
It closes;
First rib, the second rib, third rib and the 4th rib male mold are placed individually into position by the 6th step;It is tight using bolt
Fixed bit block and 4 rib box male molds are extremely bonded;
7th step, the vertical Angle Position that the 40mm*40mm reinforcement cloth pavings cut are contacted in 4 rib boxes with forward and backward beam.
11 pressurizing mold of silicon rubber aluminium core soft mode after front-axle beam and before the back rest is in place, closes upper cover plate by the 8th step
Mold.
9th step seals overall vacuum bag processed, establishes vacuum system, and check vacuum degree, vacuum degree need to reach -85KPa with
Under, vacuum leak is no more than 17KPa in 5min, enters solidification of hot-press tank immediately and is molded.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make several improvements and modifications, these improvements and modifications also should be regarded as
In protection scope of the present invention.
Claims (5)
1. a kind of trapezoidal skeleton structure of carbon fibre composite, which is characterized in that it includes mainly front-axle beam and the back rest;Before " C " type
Be formed by connecting front-axle beam before beam and after " C " type front-axle beam, and be formed by connecting the back rest before " C " type back rest and after " C " type back rest;The first of rib box
The short side of rib, the second rib and third rib is attached with after " C " type front-axle beam and before " C " type back rest simultaneously, and the 4th rib of rib box is same
When and the taper end head of front-axle beam and the web surface of the back rest be attached.
2. a kind of trapezoidal skeleton structure of carbon fibre composite as described in claim 1, which is characterized in that the first of rib box
Rib, the second rib, third rib and the 4th rib are equipped with reinforcement cloth at link position simultaneously.
3. a kind of trapezoidal skeleton structure of carbon fibre composite as described in claim 1, which is characterized in that before " C " type front-axle beam
It connects to form front-axle beam by curing after " C " type front-axle beam, be connected before " C " type back rest and by curing after " C " type back rest
It connects to form the back rest.
4. a kind of trapezoidal skeleton structure of carbon fibre composite as described in claim 1, which is characterized in that the first of rib box
The short side of rib, the second rib and third rib is attached with after " C " type front-axle beam and before " C " type back rest by curing simultaneously, rib
4th rib of box is attached with the taper end head of front-axle beam and the web surface of the back rest by curing simultaneously.
5. a kind of trapezoidal skeleton co-curing forming method of carbon fibre composite, which is characterized in that using " piecemeal paving, combination
The form of solidification ", specifically includes following steps:
The first step carries out surface cleaning to all molds used, then rubs releasing agent on metal die surface and combinatorial surface,
In wood moulding die surface paving polytetrafluoroethylene (PTFE) release cloth;After the completion, it will be used after die assembly;
Second step, the paving on metal die respectively after beam before and after front-axle beam, after front-axle beam and before the back rest respectively on wood moulding mold
After the completion of paving, repairing type is carried out according to mold groove to precast body and the 4th rib contact area for paving;
Third walks, and first paving is taken out in fact on former wood moulding mold for first rib, the second rib and third rib, then again takes precast body
Go out, the reinforcement cloth paving cut is inserted on precast body on silicon rubber formpiston together;The 4th direct paving of rib is on formpiston;
4th step combines before front-axle beam and after front-axle beam, and before and after the back rest after beam, specific method is, by the mould before front-axle beam and after front-axle beam
Have groove alignment, left and right edges alignment, pre-compacted is filled at the angles R after combination using spill item made of unidirectional prepreg tape
It is smooth, then, using prepreg by combinatorial surface sealing label;Combined method before and after the back rest after beam is same as above;
5th step is taken out the wood moulding mold of front-axle beam and the back rest, by the metal die of front-axle beam and the back rest and bottom plate die assembly;
First rib, the second rib, third rib and the 4th rib male mold are placed individually into position by the 6th step;It is fastened using bolt
Position block and 4 rib box male molds are extremely bonded;
7th step, the vertical Angle Position that the reinforcement cloth paving cut is contacted in 4 rib boxes with forward and backward beam.
Silicon rubber aluminium core soft mode pressurizing mold after front-axle beam and before the back rest is in place, closes upper cover board mold by the 8th step;
9th step seals overall vacuum bag processed, is molded into solidification of hot-press tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810609725.9A CN108688195B (en) | 2018-06-13 | 2018-06-13 | Trapezoidal skeleton structure of carbon fiber composite material and forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810609725.9A CN108688195B (en) | 2018-06-13 | 2018-06-13 | Trapezoidal skeleton structure of carbon fiber composite material and forming method thereof |
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| CN108688195A true CN108688195A (en) | 2018-10-23 |
| CN108688195B CN108688195B (en) | 2024-04-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216901A (en) * | 2019-07-11 | 2019-09-10 | 沈阳西子航空产业有限公司 | The combined closing chamber part solidifying and molding device of composite wood magazine pipe and forming method |
| CN114919210A (en) * | 2022-04-22 | 2022-08-19 | 南京聚隆复合材料技术有限公司 | Forming method of composite material wing framework |
| CN115042453A (en) * | 2022-06-22 | 2022-09-13 | 沈阳飞机工业（集团）有限公司 | Thin-wall tool for manufacturing H-shaped variable cross-section honeycomb sandwich structure composite material product |
| CN115320128A (en) * | 2022-09-19 | 2022-11-11 | 株洲电力机车广缘科技有限责任公司 | Method for integrally forming bracket arm and longitudinal beam of continuous carbon fiber reinforced composite suspension frame |
| CN117162539A (en) * | 2023-11-02 | 2023-12-05 | 成都泰格尔航天航空科技股份有限公司 | Compacting device and production process thereof |
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