The molding machine of large-size carbon fibre pipe beam entiretyTechnical field
The present invention relates to carbon fibre composite field, especially with regard to a kind of large-size carbon fibre pipe beam it is whole atType device.
Background technique
The excellent performance such as high specific strength, high specific stiffness, the low weight of carbon fibre composite, so that carbon fiber compositeMaterial is applied on a large scale in every field, especially unmanned plane field, occur a large amount of full carbon fibre composite withoutIt is man-machine.According to composite Materials Design principle and theory, according to the loading conditions of aircraft and interface position relationship etc., full carbon fiber is multipleCondensation material unmanned plane is standing in respect of main force support structure part.Spectators of the carbon fiber pipe beam as full carbon fibre composite unmanned planeIt builds, carries the weight of whole airplane.As the requirement that carries to unmanned plane is continuously improved, wing, empennage of unmanned plane etc. byStep becomes wing and becomes larger, or even occurs more than hundred meters of wing, wing Guan Liang also with increase, it is thicker.
The moulding process of carbon fiber pipe beam is mainly winding process, dematron technique, interior plavini and autoclave process.WindingThe molding product of technique institute, machine direction is single, and higher unidirectional can be unable to satisfy carbon fiber pipe beam as important PartsPerformance requirement；The product of dematron technological forming substantially meets carbon fiber pipe beam although performance is excellent compared with the molding product of winding processPerformance requirement, but at present market dematron equipment size it is limited, length can not be formed in the carbon fiber pipe beam of 7m or more.AndCarbon fiber pipe beam avoids carrying out segment processing, while segment processing as far as possible as important Parts, and the weight for linking metal joint can be bigThe big weight for increasing whole airplane, is that designer is unwilling to receive.Requirement of the interior plavini to mantle is high, product quality withoutMethod, which is stablized, to be guaranteed, the autoclave process technique more mature as composite material aircraft field, molding carbon fiber pipe beam has demouldingDifficult problem.
In view of the above problems, integrally formed carbon fiber pipe beam is very urgent in the development of full composite material unmanned plane and closesKey is the important Parts concerning a whole set of products quality.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answeringWhen being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of molding machine of large-size carbon fibre pipe beam entirety, the molding products of instituteSurface and internal soundness are reliable, and quality is stablized, and completely solve the process difficulties of large-size carbon fibre pipe beam.
To achieve the above object, the present invention provides a kind of molding machines of large-size carbon fibre pipe beam entirety, in conjunction with heatTank is pressed to use, the molding machine of large-size carbon fibre pipe beam entirety includes: main body lower die and core model.Preimpregnation is affixed on core modelMaterial, core model is placed in main body lower die, and core model includes: metal core die, isolated material and mantle.Metal core die surface is coated withLubriation material；Isolated material is coated on the surface of metal core die；And mantle is sheathed on isolated material and metal core die；Wherein,The both ends of metal core die have the first end socket and the second end socket, and the first end socket can be freely disassembled, and the second end socket and metalCore model is fixedly connected；Wherein, close to the second end socket metal core die one end be equipped with air inlet, and external air source can by intoPort enters the inside of metal core die, provides solidifying pressure for prepreg；Wherein, the surface of prepreg is successively affixed with demouldingCloth, isolation film, airfelt and vacuum bag film, and vacuum bag film is to be sealed prepreg.
In a preferred embodiment, the surface of metal core die offers multiple gas ports, and multiple gas ports toSo that the pressure of external air source is transferred to mantle, is re-applied on prepreg.
In a preferred embodiment, metal core die with mantle is fixed by clip.
In a preferred embodiment, multiple gas ports take the formal distribution being staggered in the surface of metal core die.
In a preferred embodiment, the both ends and two sides of main body lower die have been evenly arranged vacuum quick coupling, and trueEmpty quick coupling with vacuum bag film to be connected.
In a preferred embodiment, the surrounding of main body lower die is pasted with a circle sealing joint strip, and vacuum bag film and trueIt is pasted on sealing joint strip after empty quick coupling connection, to form vacuum system.
In a preferred embodiment, air inlet is located at the outside of vacuum bag film.
In a preferred embodiment, the two sides of main body lower die are disposed at least twice pumping access, and vacuum is quickConnector is respectively arranged at least twice pumping access.
Compared with prior art, the molding machine of large-size carbon fibre pipe beam entirety according to the present invention, institute are moldingProduct surface and internal soundness are reliable, and quality is stablized, and completely solve the process difficulties of large-size carbon fibre pipe beam.
Detailed description of the invention
Fig. 1 is the structural representation of the molding machine of large-size carbon fibre pipe beam entirety according to an embodiment of the present inventionFigure.
Fig. 2 is the structure of the molding machine core mould of large-size carbon fibre pipe beam entirety according to an embodiment of the present inventionSchematic diagram.
Fig. 3 is metal core die in the molding machine of large-size carbon fibre pipe beam entirety according to an embodiment of the present inventionStructural schematic diagram.
Main appended drawing reference explanation:
1- main body lower die, 2- sealing joint strip, 3- core model, 4- prepreg, 5- release cloth, 6- isolation film, 7- airfelt, 8- are trueEmpty bag film, 9- vacuum quick coupling, 10- metal core die, 11- mantle, 12- air inlet, the first end socket of 13-, 14- isolated material,The second end socket of 15-, 16- clip, 17- gas port.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the inventionShield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its changeChanging such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other membersPart or other component parts.
As shown in Figure 1 to Figure 3, Fig. 1 is the molding of large-size carbon fibre pipe beam entirety according to an embodiment of the present inventionThe structural schematic diagram of device；Fig. 2 is in the molding machine of large-size carbon fibre pipe beam entirety according to an embodiment of the present inventionThe structural schematic diagram of core model；Fig. 3 is in the molding machine of large-size carbon fibre pipe beam entirety according to an embodiment of the present inventionThe structural schematic diagram of metal core die.
The molding machine of a kind of large-size carbon fibre pipe beam entirety according to the preferred embodiment of the present invention, in conjunction with autoclaveIt uses, the molding machine of large-size carbon fibre pipe beam entirety includes: main body lower die 1 and core model 3.Preimpregnation is affixed on core model 3Material 4, core model 3 is placed in main body lower die 1, and core model 3 includes: metal core die 10, isolated material 14 and mantle 11.Metal core die10 surfaces are coated with lubriation material；Isolated material 14 is coated on the surface of metal core die 10；And mantle 11 is sheathed on isolated material14 and metal core die 10 on；Wherein, the both ends of metal core die 10 have the first end socket 13 and the second end socket 15, and the first end socket 13It can be freely disassembled, and the second end socket 15 is fixedly connected with metal core die 10；Wherein, close to the metal core die 10 of the second end socket 15One end be equipped with air inlet 12, and external air source can enter the inside of metal core die 10 by air inlet 12, mention for prepreg 4For solidifying pressure；Wherein, the surface of prepreg 4 is successively affixed with release cloth 5, isolation film 6, airfelt 7 and vacuum bag film 8, andVacuum bag film 8 is to be sealed prepreg 4.Equal diameter, non-equal diameter, the large-size carbon fibre pipe beam of variable cross-section are wholeMolding machine is within the scope of the claims of the present invention.
In a preferred embodiment, the surface of metal core die 10 offers multiple gas ports 17, and multiple gas ports17, to enable the pressure of external air source to be transferred to mantle 11, are re-applied on prepreg 4；Metal core die 10 is with mantle 11It is fixed by clip 16.
In a preferred embodiment, multiple gas ports 17 take the formal distribution being staggered in the table of metal core die 10Face；The both ends and two sides of main body lower die 1 have been evenly arranged vacuum quick coupling 9, and vacuum quick coupling 9 to vacuum bag film8 are connected.
In a preferred embodiment, the surrounding of main body lower die 1 is pasted with a circle sealing joint strip 2, and vacuum bag film 8 withVacuum quick coupling 9 is pasted on sealing joint strip 2 after connecting, to form vacuum system；Air inlet 12 is located at vacuum bag film 8Outside；The two sides of main body lower die 1 are disposed at least twice pumping access, and vacuum quick coupling 9 is respectively arranged at least twiceIt is evacuated on access.
In practical applications, in conjunction with interior plavini and autoclave forming process, by 4 paving of prepreg on core model 3, thenThe core model 3 for having spread prepreg 4 is placed in main body lower die 1, in 3 upper surface bag making of core model, forms overall vacuum closed system,4 inner surface of prepreg is realized from mantle 11 to external pressurized, outer surface is pressurizeed by hot pressing pressure tank ecto-entad, and core model 3 guaranteesThe size of product, finally realizes integral solidifying.
Wherein, core model 3 is by metal core die 10, mantle 11 and isolated material for isolating metal core model 10 and mantle 1114 compositions, mantle 11 are fixed on metal core die 10 by clip 16；Metal end is provided with the first end socket 13, the second end socket 15With air inlet 12, wherein the first end socket of one end 13 is movable end socket, is linked on metal core die 10 convenient for mantle 11, air inlet 12Second end socket 15 of side is fixed end socket, guarantees air-tightness；10 surface of metal core die is provided with multiple gas ports 17, guaranteesWhen solidification, the air pressure of external air source acts on mantle 11 by multiple gas ports 17, to realize the pressurization to prepreg 4.
According to the requirement of autoclave process specification, successively laying release cloth 5, isolation film 6, airfelt 7 and vacuum bag film 8 etc.Vacuum sealing system is made in prepreg 4 and core model 3 by auxiliary material.When bag making, the air inlet 12 of 10 end of metal core die is placed inOutside vacuum bag film 8, guarantee external air source by realizing the pressurization to prepreg 4 inside metal core die 10.
Specifically, by after the removing surface to cleaning of metal core die 10, lubriation material is coated, successfully convenient for mantle 11Fitting is to the surface of metal core die 10；Isolated material 14 is wrapped in the surface of metal core die 10, convenient for mantle 11 smoothly fromThe abjection of 10 surface of metal core die.
After core model 3 is ready, the first end socket 13 is connect with metal core die 10, is integrally placed at rotation paving toolingOn.According to the ply stacking-sequence of design by 4 paving of prepreg on the surface of core model 3, after 4 paving of prepreg is completed, by 3 turns of core modelIt moves on in main body lower die 1, mantle 11 is fixed on metal core die 10 using clip 16, air inlet 12 is fixed on metal coreOn mould 10.The surrounding of main body lower die 1 is cleared up to cleaning, and pastes a circle sealing joint strip 2, the upper surface of prepreg 4 successivelyRelease cloth 5, isolation film 6 and airfelt 7 are placed, is respectively arranged three pumping accesses in the two sides of main body lower die 1, and place vacuumQuick coupling 9 is later sealed prepreg 4 using vacuum bag film 8, forms airtight vacuum system, vacuum bag film 8 and sealingAdhesive tape 2 is connected.In vacuum sealing procedure, air inlet 12 need to be placed in the outside of vacuum bag film 8.Main body lower die 1 and core model 3 are shiftedInto autoclave, heating, pressurization and solidification.
In short, the molding machine of large-size carbon fibre pipe beam entirety of the invention, metal core die play a supportive role, guarantee carbonThe internal diameter and shape of fibre pipe beam, mantle guarantee that core model being capable of the successfully abjection inside carbon fiber pipe beam.In metal coreThere are multiple gas ports, ends to have air inlet for mould surface, and autoclave internal pressure is entered inside metal core die by air inlet, leads toThe gas port for crossing the surface of metal core die acts on mantle, solidifies the pressure provided from inside to outside, while autoclave for prepregPressure acts on prepreg upper surface, is formed in double vacuum environments, is carried out by mantle and vacuum bag film so that prepreg be made to be inSolidification, the molding product surface of institute and internal soundness are reliable, and quality is stablized, and completely solve the work of large-size carbon fibre pipe beamSkill problem.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptionsIt is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changedAnd variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answeringWith so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention andVarious chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.